Patent Application
20240190124
The present description discloses a replacement unit, a printing device, a mounting system, and a control method for a replacement unit.
Conventionally, for example, in printing devices for performing a printing process of printing a viscous fluid on a printing target object such as a board using a screen mask, there has been proposed a printing device in which printing-related members including a screen mask or the like for use in the printing device are automatically replaced (for example, refer to Patent Literature 1 or the like). With this printing device, since the printing-related members can automatically be replaced, the load of an operator can be reduced much. In addition, in mounting systems in which such a printing device is used, there has been proposed a mounting system including a loader for replacing members for use in a mounting device for mounting a component on a processing target object such as a board and configured to specify a work area where an operator performs an operation to thereby cause the loader not to enter this specified work area (for example, refer to Patent Literature 2). With this mounting system, the wasteful operation of the loader can be reduced.
With the printing device described above, however, an accommodation device is placed in front of the printing device, and printing-related members are automatically replaced between the printing device and the accommodation device; however, since the accommodation device is disposed at the front of the printing device, there has been a problem in that the printing device makes it difficult for the operator to perform his or her operation. In addition, as with the mounting device, the printing device is also required to secure the safety of the operator in the work area by detecting an object existing in the work area.
The present disclosure has been made in view of the problems described above, and a main object thereof is to provide a replacement unit, a printing device, a mounting system, and a control method for a replacement unit which can provide more safety in automatically replacing printing-related members for use in the printing device.
A replacement unit, a printing device, a mounting system, and a control method for a replacement unit which are disclosed in the present description adopt the following measures to achieve the main object described above.
A replacement unit according to the present disclosure is a replacement unit for use in a printing device including a printing section configured to perform a printing process of printing a viscous fluid on a processing target object using a screen mask,
With this replacement unit, when the accommodation rack accommodating the printing-related members exists outside the predetermined movement region which lies between the standby position and the replacement position, an object existing in the predetermined first detection region which lies around the circumference of the replacement unit is detected, whereas when the accommodation rack exists inside the movement region, an object existing in the second detection region which is different from the first detection region is detected. With this replacement unit, since the detection regions for objects can be changed appropriately in accordance with the position of the accommodation rack, more safety can be ensured for automatically replacing the printing-related members for use in the printing device.
Hereinafter, an embodiment of the present disclosure will be described by reference to drawings.
Print inspection device 12 constitutes a device for detecting the state of a viscous fluid such as solder paste which is printed on board S by printing device 11. The mounting inspection device constitutes a device for inspecting the state or the like of component P mounted on board S. The reflow deice constitutes a device for reflowing a board on which solder is printed and component P is mounted. Management PC 17 constitutes a device for managing information on the individual constituent devices of mounting system 10. This management PC 17 manages the progress status of each of the devices of the production line which are involved in a mounting process.
Printing device 11 constitutes a device for applying (printing) solder as a viscous fluid on to board S as a processing target object which lies therebelow through a pattern hole formed in screen mask M by forcibly pushing solder on screen mask M into the pattern hole using squeegees 25 as shown in
Printing control section 20 is configured as a microprocessor which mainly includes CPU 21 and controls the whole of printing device 11. Printing control section 20 outputs a signal to management PC 17 as an external device in addition to printing section 22, mask work section 26, board processing section 30, cleaning section 33, fluid supply section 35, operation panel 38, and replacement unit 40. In addition, printing control section 20 receives a signal from management PC 17 as an external device as an input therefrom in addition to printing section 22, mask work section 26, board processing section 30, cleaning section 33, fluid supply section 35, rack detection section 37, operation panel 38, and replacement unit 40. This printing control section 20 has a storage section for storing information on board S on which a printing process is performed, a printing process program for performing a printing process on to board S, a member replacement process program for executing a replacement process of frames 29 by replacement section 27, and the like.
Printing section 22 is disposed at an upper stage of printing device 11, constituting a unit for performing a printing process of printing a viscous fluid on board S using screen mask M. Printing section 22 includes, as shown in
Accommodation rack 80 constitutes an accommodation body for accommodating frames 29 configured to support screen mask M as a printing-related member involved in a printing process performed in printing section 22. Accommodation rack 80 has, as shown in
Supporting and fixing member 85 is a plate-shaped member and is fixed to left and right end portions at a front of a lower surface of rack main body 80a. This supporting and fixing member 85 is a member which is used for connection to replacement unit 40. As shown in
Replacement unit 40 is a unit configured to be used in printing device 11 including printing section 22 for executing a printing process of printing a viscous fluid on a processing target object using screen mask M so as to automatically replace printing-related members for use in printing device 11 between printing device 11 and itself. Replacement unit 40 is configured as a device for receiving accommodation rack 80 which accommodates printing-related members such as screen masks M which are fixed to corresponding frames 29 so as to lift and lower accommodation rack 80. Replacement unit 40 has left unit 41 and right unit 51. Left unit 41 is disposed at a front left-hand side of a housing of printing device 11. Right unit 51 is disposed at a front right-hand side of the housing of printing device 11. As shown in
Left unit 41 includes receiving section 42, rack moving section 43, fixing section 50, region detection section 55, and lower surface detection section 57. Receiving section 42 is configured to receive accommodation rack 80 having multiple shelf sections 81 accommodating frame 29 which can support a printing-related member for use in printing device 11 and supports this accommodation rack 80 from a lower surface side thereof so as to lift and lower this accommodation rack 80. Rack moving section 43 is configured to lift and lower, and move forwards and backwards accommodation rack 80 among the replacement position where printing-related members are replaced, a lifting enabling position which lies further downwards than this replacement position, and the standby position where accommodation rack 80 enters an inside of the housing of printing device 11. In replacement unit 40, a region defined between the replacement position and the standby position excluding the replacement position and the standby position is referred to as a “movement region” of accommodation rack 80. Rack moving section 43 includes, as shown in
Region detection section 55 is a sensor for detecting an object existing on a circumference of left unit 41. This region detection section 55 can use, for example, a laser scanner, an infrared sensor, or the like and can detect an object by switching multiple different detection regions. Region detection section 55 covers a range of 270° around or centered at a sensor thereof excluding a region of the housing of left unit 41, which is referred to as first detection region 91 (refer to
Replacement unit 40 has replacement control section 59. Replacement control section 59 is configured as a microprocessor which mainly includes CPU and controls the whole of replacement unit 40. Replacement control section 59 outputs a signal to printing control section 20 in addition to lifting and lowering drive section 45, and forward-backward drive section 48. In addition, replacement control section 59 receives a signal as an input from printing control section 20 in addition to region detection sections 55, 56 and lower surface detection sections 57, 58. Upon receipt of a signal informing that accommodation rack 80 is received in receiving section 42 from rack detection section 37, this replacement control section 59 performs a process of lifting up hook portion 47 so as to bring this hook portion 47 into engagement with block section 86. In addition, to replace printing-related members, replacement control section 59 performs a process of causing rack moving section 43 to lift up accommodation rack 80 from the standby position to the replacement position via the lifting enabling position. In addition, when the replacement of printing-related members is completed, replacement control section 59 causes rack moving section 43 to move accommodation rack 80 from the replacement position to the standby position via the lifting enabling position.
Mounting device 15 constitutes a device for picking up component P to mount it on board S as a processing target object. This mounting device 15 includes, as shown in
Mounting section 64 constitutes a unit for picking up component P from component supply section 63 to dispose it on board S fixed in board processing section 61. Mounting section 64 includes head moving section 65, mounting head 66, and nozzle 67. Head moving section 65 includes a slider configured to move in XY directions by being guided by a guide rail and a motor for driving the slider. Mounting head 66 is configured to pick up one or more components P and to be moved in the XY directions by head moving section 65. This mounting head 66 is detachably attached to the slider. One or more nozzles 67 are detachably attached to a lower surface of mounting head 66. Nozzle 67 is configured to pick up component P by making use of a negative pressure. Here, a pickup member for picking up component P may adopt a mechanical chuck for mechanically holding component P or the like in addition to nozzle 67. Operation panel 68 constitutes a unit for not only receiving inputs from operator W but also presenting information to operator W. This operation panel 68 includes a display section which is a display and an operation section of a touch panel type having a button.
As shown in
Loader 18 is configured as a mobile work device and constitutes a device configured to move within a moving range existing on a circumference of mounting device 15 on a front surface side of mounting device 15 to automatically attach, detach, collect, and feed mounting-related members such as feeders F for use in mounting device 15. This loader 18 includes, as shown in
In this mounting system 10, printing device 11 and mounting devices 15 are disposed in such a manner that their front surfaces are on the same side, and replacement unit 40 and loader 18 as a moving work device are disposed on the same side. In particular, in mounting system 10, replacement unit 40 and loader 18 are disposed on the front surface sides of printing device 11 and mounting devices 15. In this mounting system 10, storage device 13 is disposed between printing device 11 and mounting device 15 in such a manner that a replacement work position is situated on the same side as the side where replacement unit 40 and loader 18 are disposed. In addition, in this mounting system 10, as shown in
Next, a printing process of printing device 11 configured in the way described heretofore will briefly be described. In execution of a printing process, automatic conveyance vehicle 16 performs an operation of conveying accommodation rack 80 to replacement unit 40 (a topmost diagram in
Subsequently, a process will briefly be described in which mounting device 15 mounts component P on board S. When a mounting process is started, CPU 60a of mounting control section 60 first causes board processing section 61 to load and fix board S. Subsequently, CPU 60a performs a process of reading out the mounting condition information, and causing mounting head 66 to pick up component P from feeder F attached to component supply section 63 and to dispose it on board S based on this mounting condition information. When the disposition of component P on board S is completed, CPU 60a causes board processing section 61 to discharge board S and repeats this process described above. CPU 60a manages the number of components consumed in each feeder F during the mounting process, and when the number of remaining components becomes equal to or smaller than a predetermined warning value, CPU 60a transmits information to that effect to host PC 14. Host PC 14 causes loader 18 to execute a replacement operation based on this information. Loader 18 moves between storage device 13 and mounting device 15 along X-axis rail 19 and executes a replacement process of feeders F in work target mounting device IS. In this way, mounting device 15 repeatedly performs the process of disposing component P on board S while replacing feeders F until the production process of all boards S in the production plan is completed.
Next, a specific process of securing safety in replacing printing-related members by moving accommodation rack 80 in replacement unit 40 will be described. Firstly, here, setting of first detection region 91 and second detection region 92 will be described.
Next, a specific process of replacing printing-related members by moving accommodation rack 80 will be described.
When this routine is executed, CPU of replacement control section 59 not only determines whether an object is detected in the detection region but also determines whether an object is detected in warning region 93 (S200). CPU executes these determinations by obtaining detection signals in first detection region 91 from region detection sections 55, 56 (refer to
After S220, CPU of replacement control section 59 determines whether an object is detected in the detection region based on signals obtained from region detection sections 55, 56 (S230), and when an object is detected in the detection region, CPU suspends the movement of accommodation rack 80 (S240), and executes the processes from S230 onward. Here. CPU may also be configured to determine whether an object is detected in second detection region 92 and suspend the movement of accommodation rack 80, for example, for a predetermined period of time (3 seconds, 5 seconds, 10 seconds, or the like) as a temporary stop. On the other hand, when an object is not detected in the detection region in S230, CPU determines whether an object has been detected in warning region 93 (S250), and when an object is detected in warning region 93, CPU causes accommodation rack 80 to continue moving (S260). An object to be detected in warning region 93 is mainly loader 18, whereby replacement control section 59 can detect an approach of loader 18. Although details will be described later, loader 18 temporarily stops its movement along X-axis rail 19 upon detection of an object in detection region 95. Since there may be a case in which, for example, caster section 84 enters detection region 95 while accommodation rack 80 stays inside the movement region, replacement control section 59 causes accommodation rack 80 to continue moving so that accommodation rack 80 moves out of detection region 95 without any delay.
After S260, or when no object is detected in warning region 93 in S250, CPU of replacement control section 59 determines whether accommodation rack 80 has completed the movement to the replacement position (S270). When accommodation rack 80 has not completed the movement to the replacement position, CPU executes the processes from S220 onward. That is, after accommodation rack 80 has started moving, CPU executes the movement of accommodation rack 80 when no object is detected in second detection region 92, and causes accommodation rack 80 to continue moving even though an object is detected in warning region 93.
On the other hand, when accommodation rack 80 has completed the movement to the replacement position in S270, CPU of replacement control section 59 activates lower surface detection sections 57, 58, causing them to start detection (S280) for execution of a replacement process of screen masks M as printing-related members (S290). For this, the detection region is switched from second detection region 92 to first detection region 91 (refer to
On the other hand, when the replacement process is determined to have been completed in S300, CPU of replacement control section 59 determines whether an object is detected in the detection region, whether an object is detected in warning region 93, and whether an object is detected in lower surface region 94 (S310). CPU executes this determination by obtaining detection signals in first detection region 91 from region detection sections 55, 56, a detection signal in warning region 93 from region detection section 56, and detection signals in lower surface region 94 from lower surface detection sections 57, 58 (refer to
After S330, CPU of replacement control section 59 determines whether an object is detected in either of the detection region and lower surface region 94 (S340). CPU executes this determination based on detection signals in second detection region 92 obtained from region detection sections 55, 56, and detection signals in lower surface region 94 obtained from lower surface detection sections 57, 58. When an object is detected in either of the detection region and lower surface region 94, CPU suspends the movement of accommodation rack 80 (S350), and executes the processes from S340 onward. Here, CPU may be configured to determine whether an object is detected in second detection region 92 and lower surface region 94, and suspend the movement of accommodation rack 80 for, for example, a predetermined period of time (3 seconds, 5 seconds, 10 seconds, or the like) as a temporary stop.
On the other hand, when no object is detected in the detecting region in S340, CPU determines whether an object is detected in warning region 93 (S360), and when an object is detected in waring region 93, CPU causes accommodation rack 80 to continue moving (S370). An object to be detected in warning region 93 is mainly loader 18, whereby replacement control section 59 can detect an approach of loader 18. Loader 18 suspends the movement along X-axis rail 19 when an object is detected in detection region 95. Since there may be a case in which, for example, caster section 84 enters detection region 95 while accommodation rack 80 stays inside the movement region, replacement control section 59 causes accommodation rack 80 to continue moving so that accommodation rack 80 moves out of detection region 95 without any delay.
After S370 or when no object is detected in waring region 93 in S360, CPU of replacement control section 59 determines whether accommodation rack 80 is at a predetermined lower limit height or lower (S380). This lower limit height is set to a height at which a member disposed on accommodation rack 80, for example, caster section 84 does not enter lower surface region 94. When accommodation rack 80 is not at the predetermined lower limit height or lower, CPU executes the processes from S330 onward. That is, after accommodation rack 80 has started to move, CPU executes the movement of accommodation rack 80 when no object is detected in second detection region 92 and lower surface region 94 and causes accommodation rack 80 to continue moving even though an object is detected in warning region 93. On the other hand, when accommodation rack 80 is at the lower limit height or lower in S380, the detection of an object by lower surface detection sections 57, 58 ends, and the determination of an existence of an object in lower surface region 94 also ends (S390). Then, CPU determines whether the movement of accommodation rack 80 to the standby position is completed (S400), and when the movement of accommodation rack 80 to the standby position has not yet been completed, CPU executes the processes from S330 onward. At this time, CPU omits the determination on whether an object exists in lower surface region 94 in S340. On the other hand, when the movement of accommodation rack 80 to the standby position is completed in S400, CPU ends the routine. In this manner, replacement unit 40 executes and restricts the movement of accommodation rack 80 while detecting an object existing on the circumference of replacement unit 40. In particular, after loader 18 has entered waring region 93, replacement unit 40 does not execute the movement of accommodation rack 80 from the replacement position and the standby position, whereby a risk of loader 18 suspending its movement is suppressed more. In addition, with replacement unit 40, a risk of an erroneous detection is suppressed more by switching the detection region between first detection region 91 and second detection region 92 in accordance with the position of accommodation rack 80.
Next, a specific process of securing safety when loader 18 moves to replace mounting-related members will be described.
After S530, CPU 71 determines whether the movement of loader 18 has been completed based on the current position of loader 18 (S540), and executes the processes from S510 onward when the movement of loader 18 has not yet been completed. That is, loader 18 moves to the replacement position while suspending its movement when an object exists in detection region 95. When the movement of loader 18 is completed in S540, CPU 71 executes a replacement process of mounting-related members (S550). In the replacement process, CPU 71 executes loading and unloading operations of feeder F using replacement section 74. After S550, CPU 71 determines whether the replacement process has been completed (S560), and executes the processes from S550 onward when the replacement process has not yet been completed. That is, CPU 71 continues the replacement process. On the other hand, when the replacement process has been completed in S560, or when no replacement process request is made in S500, CPU 71 determines whether all the processes have been completed (S570). CPU 71 determines that all the processes have been completed when all the mounting processes at mounting devices IS have been completed, when the power supply of mounting system 10 is switched off, or the like. When all the processes have not yet been completed, CPU 71 executes the processes from S500 onward, whereas when all the processes have been completed in S570, CUP 71 ends this routine.
In mounting system 10, when loader 18 approaches printing device 11, there may be a case in which the detection region of replacement unit 40 overlaps detection region 95. This tendency is increased particularly in a production line without print inspection device 12 and storage device 13. At this time, when accommodation rack 80 enters detection region 95, and loader 18 enters the detection region, there may be caused a locked state in which both the devices suspend the operation. With this mounting system 10, an approach of loader 18 is detected by detecting an object in warning region 93 by replacement unit 40 to thereby restrict the movement of accommodation rack 80, whereby the occurrence of such a locked state is prevented.
Here, correspondence relationships between the elements of the present embodiment and elements of the present disclosure will be clarified. Printing section 22 of the present embodiment corresponds to a printing section, rack moving section 43 corresponds to a moving section, region detection sections 55, 56 correspond to a region detection section, region detection section 56 corresponds to a device detection section, lower surface detection sections 57, 58 correspond to a lower surface detection section, and replacement control section 59 corresponds to a control section. In addition, first detection region 91 corresponds to a first detection region, second detection region 92 corresponds to a second detection region, warning region 93 corresponds to a warning region, lower surface region 94 corresponds to a lower surface region, and detection region 95 corresponds to a detection region. In addition, replacement unit 40 corresponds to a replacement unit, printing device 11 corresponds to a printing device, print inspection device 12, storage device 13, mounting device 15, and the like correspond to a mounting-related device, and loader 18 corresponds to a moving work device. Here, in the present embodiment, an example of a control method for a replacement unit according to the present disclosure is clarified by describing the operation of replacement unit 40.
In replacement unit 40 of the present embodiment that has been described heretofore, when accommodation rack 80 accommodating printing-related members exists outside the predetermined movement region lying between the standby position and the replacement position of accommodation rack 80, an object existing in predetermined first detection region 91 lying on the circumference of replacement unit 40 is detected, whereas when accommodation rack 80 exists inside the movement region, an object existing in second detection region 92 which is different from first detection region 91 is detected. With this replacement unit 40, since the detection region of an object can be changed appropriately in accordance with the position of accommodation rack 80, more safety can be secured for automatic replacement of printing-related members for use in printing device 11.
In addition, region detection sections 55, 56 define the region which avoids the member (for example, caster section 84) disposed on accommodation rack 80 as second detection region 92 when accommodation rack 80 exists inside the movement region. With this replacement unit 40, an erroneous detection of an object can be prevented more when accommodation rack 80 exists inside the movement region. Further, region detection sections 55, 56 define the region which includes the front surface of replacement unit 40 as first detection region 91 when accommodation rack 80 exists outside the movement region. With this replacement unit 40, a detection of an object can be executed in an appropriate region such as the replacement position, the standby position, and the like which lie outside the movement region. Furthermore, replacement unit 40 restricts the movement of accommodation rack 80 when an object is detected in first detection region 91 and/or second detection region 92. With this replacement unit 40, more safety can be secured by restricting the movement of accommodation rack 80 in accordance with an detection of an object.
In addition, replacement unit 40 includes lower surface detection sections 57, 58 for detecting an object existing in lower surface region 94 lying on the lower surface side of accommodation rack 80. With this replacement unit 40, an object existing below accommodation rack 80 can be detected, whereby more safety can be secured. Further, replacement unit 40 suspends the detection of an object by lower surface detection sections 57, 58 when accommodation rack 80 is in the standby position and at the predetermined height or lower and executes the detection of an object by lower surface detection sections 57, 58 when accommodation rack 80 is above the predetermined height. With this replacement unit 40, an erroneous detection of an object existing below accommodation rack 80 can be prevented more. Furthermore, replacement control section 59 does not execute the lowering of accommodation rack 80 when accommodation rack 80 is above the predetermined height and an object is detected by lower surface detection sections 57, 58. With this replacement unit 40, since a contact of accommodation rack 80 with an object existing therebelow can be prevented by prohibiting the lowering of accommodation rack 80, more safety can be secured.
In addition, replacement unit 40 includes left unit 41 disposed on the left-hand side of the housing of printing device 11 and right unit 51 disposed on the right-hand side of the housing, and has lifting and lowering space 49 defined between left unit 41 and right unit 51 to lift and lower accommodation rack 80, and region detection sections 55, 56 are disposed on each of left unit 41 and right unit 51 to detect an object existing on the circumference of replacement unit 40. With this replacement unit 40, an object existing on the circumference ranging from the left to right of printing device 11 can be detected, whereby more safety can be secured.
Further, replacement unit 40 is used in the mounting system including multiple mounting devices 15 which are involved in the process of mounting component P on the processing target object and loader 18 as the moving work device configured to move on the circumference of mounting device 15 when no object exists inside predetermined detection region 95 to automatically replace mounting-related members for use in mounting device 15. Then, replacement control section 59 causes rack moving section 43 to move accommodation rack 80 between the replacement position and the standby position. In addition, replacement control section 59 does not execute the movement of accommodation rack 80 when region detection section 56 as the device detection section detects an object in warning region 93 when accommodation rack 80 is not moving. There may be a case in which mounting system 10 includes loader 18 for automatically replacing members of mounting device 15 and replacement unit 40 for replacing members for use in printing device 11. Loader 18 is restricted from moving when an object exists in detection region 95 which constitutes a circumference of loader 18, whereas the movement of replacement unit 40 is also limited when an object exists inside the detection region. For example, when loader 18 enters the detection region of replacement unit 40 and accommodation rack 80 enters detection region 95 of loader 18, there may be caused a case in which the movements of both loader 18 and accommodation rack 80 are restricted, whereby the operations thereof are stopped. With this replacement unit 40, when region detection section 56 detects an object in warning region 93, replacement unit 40 determines that loader 18 is approaching, the movement of accommodation rack 80 is not executed, whereby the suspension of operations of both loader 18 and accommodation rack 80 can be prevented. Accordingly, with this replacement unit 40, the interference of the operations of both the devices can be suppressed as much as possible while securing more safety.
In addition, when region detection section 56 detects an existence of an object in warning region 93 while replacement control section 59 of replacement unit 40 is causing accommodation rack 80 to move to the replacement position, replacement control section 59 causes accommodation rack 80 to move to the replacement position and thereafter does not lower accommodation rack 80 from the replacement position while region detection section 56 continues to detect the existence of the object. With this replacement unit 40, accommodation rack 80 is prevented from entering detection region 95 of loader 18 by preventing accommodation rack 80 from being lowered, whereby the interference of the operations of both the devices can be suppressed as much as possible. Further, when region detection section 56 detects an existence of an object in warning region 93 while replacement control section 59 is causing accommodation rack 80 to move to the standby position, replacement control section 59 causes accommodation rack 80 to move to the standby position and thereafter does not execute the movement of accommodation rack 80 while region detection section 56 continues to detect the existence of the object. With this replacement unit 40, accommodation rack 80 is prevented from entering detection region 95 of loader 18 by preventing accommodation rack 80 from moving from the standby position, whereby the interference of the operations of both the devices can be suppressed as much as possible. Furthermore, in replacement unit 40, when accommodation rack 80 is in the replacement position and the standby position, accommodation rack 80 is outside detection region 95, whereas when accommodation rack 80 is in the predetermined movement region lying between the replacement position and the standby position, accommodation rack 80 is inside detection region 95, and when accommodation rack 80 is inside detection region 95, the movement of loader 18 is restricted. With this replacement unit 40, the interference of the operations of both the devices can be suppressed as much as possible in accordance with the position of accommodation rack 80. In addition, with this loader 18, since the movement thereof is limited in association with a detection of an object inside detection region 95, more safety can be secured.
In addition, in replacement unit 40, region detection section 56 defines the regions on the side of replacement unit 40 and the front surface sides of print inspection device 12, storage device 13, and mounting devices 15 which are the mounting-related devices as warning region 93. Further, warning region 93 includes the regions lying outside first detection region 91 and second detection region 92. With this replacement unit 40, loader 18 approaching the side of replacement unit 40 can be detected in advance. Further, in replacement unit 40, rack moving section 43 moves accommodation rack 80 between the lifting enabling position where accommodation rack 80 can be lifted up to the replacement position and the standby position where accommodation rack 80 is caused to enter the interior of the housing of printing device 11. With this replacement unit 40, since the accommodation rack enters the interior of the housing in the standby position, the region occupied by the accommodation rack can be reduced more, and the interference with the operation of another device can be reduced more. Furthermore, rack moving section 43 receives accommodation rack 80 which includes no power for moving printing-related members and on the lower surface side of which caster section 84 is disposed which has the casters able to run on the floor. With this replacement unit 40, accommodation rack 80 can be formed compact, and the interference with the operation of another device can be reduced more. In addition, with this accommodation rack 80, the movement thereof is facilitated by using the casters of caster section 84.
Here, the replacement unit, the printing device, the mounting system, and the control method for a replacement unit according to the present disclosure are not limited at all to the embodiment described heretofore, and it is needless to say that they can be carried out in various aspects without departing from the scope of the present disclosure.
For example, in the embodiment described heretofore, replacement unit 40 includes lower surface detection sections 57, 58 for detecting an object existing on the lower surface side of accommodation rack 80; however the present disclosure is not particularly limited thereto, and these lower surface detection sections 57, 58 may be omitted. However, replacement unit 40 preferably includes lower surface detection sections 57, 58, so as to secure more safety.
In the embodiment described heretofore, replacement unit 40 is formed such that length A along the movement direction of frame 29 is shorter than length B of accommodation rack 80; however, the present disclosure is not particularly limited thereto. Here, since a printing process can be executed with accommodation rack 80 detached, replacement unit 40 with length A being smaller length B can make the device compact and is preferable.
In the embodiment described heretofore, replacement unit 40 includes left unit 41 and right unit 51 and has lifting and lowering space 49 defined therebetween to lift and lower accommodation rack 80; however the present disclosure is not particularly limited thereto, and replacement unit 40 may be formed into an integrated structure as long as the space for accommodating accommodation rack 80 is secured. In addition, replacement unit 40 is disposed on the front surface side of printing device 11; however, the present disclosure is not particularly limited thereto, and replacement unit 40 may be disposed on a rear side or a side surface side of printing device 11.
In the embodiment described heretofore, replacement unit 40 switches the detection region between first detection region 91 and second detection region 92 so as not only to suppress the erroneous detection of accommodation rack 80 but also to detect an approach of loader 18 in warning region 93; however, the present disclosure is not particularly limited thereto, and either of them may be omitted. In replacement unit 40, in the case that the detection region is switched between first detection region 91 and second detection region 92, the erroneous detection can be suppressed more, and in the case that warning region 93 is used, the operation locked state with loader 18 can be prevented.
In the embodiment described heretofore, replacement unit 40 moves accommodation rack 80 between the lifting enabling position where accommodation rack 80 is lifted up to the replacement position and the standby position where accommodation rack 80 is caused to enter the interior of the housing of printing device 11; however, the present disclosure is not particularly limited thereto. For example, with the lifting enabling position referred to as the standby position, replacement unit 40 may be configured to use second detection region 92 which avoids the member disposed on accommodation rack 80 in the standby position. Even with this replacement unit 40, more safety can be secured for automatic replacement of printing-related members for use in printing device 11.
In the embodiment described heretofore, second detection region 92 is defined as the region having the triangular blank region at the front of printing device 11; however, if second detection region 92 is defined as the region different from first detection region 91, the present disclosure is not particularly limited thereto, and for example, as shown in
In the embodiment described heretofore, region detection section 56 is described as doubling as the device detection section of the present disclosure; however, the present disclosure is not particularly limited thereto, and replacement unit 40 may include a device detection section which is different from region detection section 56. In addition, in the embodiment described heretofore, region detection section 56 provided on right unit 51 is referred to as the device detection section; however, the present disclosure is not particularly limited thereto, and region detection section 55 may be referred to as the device detection section depending on the arrangement of the mounting-related devices.
In the embodiment described heretofore, warning region 93 is described as being configured such that the distance from region detection section 56 in the movement direction of loader 18 is determined in such a manner that the rack movement time is shorter than the loader movement time; however, the present disclosure is not particularly limited thereto, if warning region 93 is defined as a region which can detect an approach of the loader so as to avoid a locked state of operations of both the devices. Warning region 93 is preferably set as a region which can detect loader 18 before detection region 95 of loader 18 comes to overlap the movement region of accommodation rack 80.
In the embodiment described heretofore, accommodation rack 80 is described as having no drive section for moving frame 29; however, the present disclosure is not particularly limited thereto, and accommodation rack 80 may be configured as one having a drive section for moving frame 29.
In the embodiment described heretofore, the printing-related member is described as screen mask M; however, the present disclosure is not limited thereto as long as the printing-related member need be replaced, and the printing-related member may be one or more in cartridge 36 accommodating therein a viscous fluid, squeegee 25, cleaning member 34 for use for cleaning screen mask M, support member 32 for supporting board S as a processing target object, and the like, in addition to screen mask M. In addition, the processing target object is described as board S; however, the present disclosure is not particularly limited thereto, and a three-dimensional object or the like may be used if a viscous fluid is printed thereon. In addition, although the viscous fluid is described as the solder paste, conductive paste, an adhesive, or the like may be used.
In the embodiment described heretofore, the present disclosure discloses printing device 11 including replacement unit 40; however, the present disclosure is not particularly limited thereto, and the present disclosure may disclose replacement unit 40. When replacement unit 40 is distributed for connection with printing device 11, a similar advantageous effect provided by the embodiment that has been described heretofore can be provided. In addition, in the embodiment described heretofore, the present disclosure is described as disclosing printing device 11 including replacement unit 40; however, the present disclosure is not particularly limited thereto, and the present disclosure may disclose a control method for replacement unit 40.
The replacement unit, the printing device, the mounting system, the control method for a replacement unit according to the present disclosure may be configured as follows. For example, the replacement unit of the present disclosure is a replacement unit for use in a printing device including a printing section configured to perform a priming process of printing a viscous fluid on a processing target object using a screen mask, the replacement unit including a moving section configured to receive an accommodation rack having multiple shelf sections for accommodating a printing-related member for use in the printing device and to move the accommodation rack between a replacement position where to replace the printing-related member and a standby position which lies further downwards than the replacement position, and a region detection section configured to detect an object existing in a predetermined first detection region lying around a circumference of the replacement unit when the accommodation rack exists outside a predetermined movement region which lies between the standby position and the replacement position, while being configured to detect an object existing in a second detection region which is different from the first detection region when the accommodation rack exists inside the movement region.
With this replacement unit, when the accommodation rack accommodating the printing-related members exists outside the predetermined movement region which lies between the standby position and the replacement position, an object existing in the predetermined first detection region which lies around the circumference of the replacement unit is detected, whereas when the accommodation rack exists inside the movement region, an object existing in the second detection region which is different from the first detection region is detected. With this replacement unit, since the detection regions for objects can be changed appropriately in accordance with the position of the accommodation rack, more safety can be ensured for automatically replacing the printing-related members for use in the printing device.
Alternatively, the replacement unit of the present disclosure may be a replacement unit for use in a printing device used in a mounting system including multiple mounting-related devices involved in a process of mounting a component on a processing target object and a moving work device configured to move between the multiple mounting-related devices for automatic replacement of members for use in the mounting-related devices when no object exists inside a predetermined detection region and including a printing section configured to perform a printing process of printing a viscous fluid on a processing target object using a screen mask, the replacement unit including a moving section configured to receive an accommodation rack having multiple shelf sections for accommodating a printing-related member for use in the printing device and to move the accommodation rack between a replacement position where to replace the printing-related member and a standby position which lies further downwards than the replacement position, a device detection section configured to detect an object existing in a predetermined warning region where the moving work device moves, and a control section configured to cause the moving section to move the accommodation rack between the replacement position and the standby position, wherein the control section does not execute a movement of the accommodation rack when the device detection section detects an object in the warning region while the accommodation rack is not being caused to move.
There may be a case in which the mounting system includes the moving work device configured to automatically replace the members for use in the mounting-related devices and the replacement unit configured to replace the members for use in the printing device. The moving work device is restricted from moving when an object exists in the detection region which constitutes the circumference thereof, whereas the movement of the replacement unit is also limited when an object exists inside the detection region. For example, when the moving work device enters the detection region of the replacement unit and the accommodation rack enters the detection region of the moving work device, the movements of both the devices are limited, whereby there may be caused a case in which the operations of both the devices are suspended. With this replacement unit, when an object is detected in the warning region by the device detection section, the replacement unit determines that the moving work device is approaching, the movement of the accommodation rack is not executed, whereby the suspension of operations of both the devices can be prevented. Accordingly, with this replacement unit, not only more safety can be secured, but also an interference of operations of both the devices can be suppressed as much as possible.
The printing device of the present disclosure is a printing device including a printing section configured to perform a printing process of printing a viscous fluid on a processing target object using a screen mask and the replacement unit according to either of the replacement units described above. With this printing device, since the printing device includes the replacement unit according to either of the replacement units described above, as with the replacement units described above, not only more safety can be secured, but also the interference of operations of both the devices can be suppressed as much as possible. In addition, with this printing device, an advantageous effect according to the aspect of the replacement unit adopted can be obtained.
The mounting system of the present disclosure is a mounting system including the printing device described above, multiple mounting-related devices involved in a process of mounting a component on a processing target object, and a moving work device configured to move between the multiple mounting-related devices for automatic replacement of members for use in the mounting-related devices when no object exists inside a predetermined movement region. With this mounting system, since the mounting system has the printing device including the replacement unit according to either of the replacement units described above, as with the replacement units described above, not only more safety can be secured, but also the interference of operations of both the devices can be suppressed as much as possible. In addition, with this mounting system, an advantageous effect according to the aspect of the replacement unit adopted can be obtained.
The control method for a replacement unit of the present disclosure is a control method for a replacement unit for use in a printing device including a printing section configured to perform a printing process of printing a viscous fluid on a processing target object using a screen mask, the replacement unit including a moving section configured to receive an accommodation rack having multiple shelf sections for accommodating a printing-related member for use in the printing device and to move the accommodation rack between a replacement position where to replace the printing-related member and a standby position which lies further downwards than the replacement position, the control method including:
As with the replacement units described above, with this control method for a replacement unit, since the detection region of an object can appropriately be changed in accordance with the position of the accommodation rack, more safety can be secured for automatic replacement of printing-related members for use in the printing device. Here, in this control method for a replacement unit, the various aspects of replacement units described above may be provided, or various steps that the replacement units execute may be added.
Alternatively, the control method for a replacement unit of the present disclosure is a control method for a replacement unit for use in a printing device used in a mounting system including multiple mounting-related devices involved in a process of mounting a component on a processing target object and a moving work device configured to move between the multiple mounting-related devices for automatic replacement of members for use in the mounting-related devices when no object exists inside a predetermined detection region and including a printing section configured to perform a printing process of printing a viscous fluid on a processing target object using a screen mask, the replacement unit including a moving section configured to receive an accommodation rack having multiple shelf sections for accommodating a printing-related member for use in the printing device and to move the accommodation rack between a replacement position where to replace the printing-related member and a standby position which lies further downwards than the replacement position, the control method including:
As with the replacement units described above, with this control method for a replacement unit, when an object is detected in the warning region by the device detection section, the control method determines that the moving work device is approaching, the movement of the accommodation rack is not executed, thereby making it possible to prevent the suspension of operations of both the devices. Accordingly, with this control method for a replacement unit, not only more safety can be secured, but also the interference of operations of both the devices can be suppressed as much as possible. Here, in this control method for a replacement unit, the various aspects of replacement units described above may be provided, or various steps that the replacement units execute may be added.
The present disclosure is applicable to the technical field of devices for performing a component mounting process.
10 mounting system, 11 printing device, 12 print inspection device, 13 storage device, 14 host PC, 15 mounting device, 16 automatic conveyance vehicle, 17 management PC, 18 loader, 19 X-axis rail, 20 printing control section, 21 CPU, 22 printing section, 23 printing head, 24 print moving section, 25 squeegee, 26 mask work section, 27 replacement section, 28 mask fixing section, 29 frame, 30 board processing section, 31 board conveyance section, 32 support member, 33 cleaning section, 34 cleaning member, 35 supply section, 36 cartridge, 37 rack detection section, 38 operation panel, 40 replacement unit, 41 left unit, 42 receiving section, 43 rack moving section, 44 lifting and lowering section, 44a cam follower, 45 lifting and lowering drive section, 47 hook portion, 48 forward-backward drive section, 49 lifting and lowering space, 50 fixing section, 51 right unit, 52 clamp lever, 53 insertion pin, 55, 56 region detection section, 57, 58 lower surface detection section, 59 replacement control section, 60 mounting control section, 60a CPU, 61 board processing section, 62 support member, 63 component supply section, 63a mounting attachment section, 63b buffer attachment section, 64 mounting section, 65 head moving section, 66 mounting head, 67 nozzle, 68 operation panel, 70 movement control section, 71 CPU, 73 accommodation section, 74 replacement section, 75 moving section, 76 region detection section, 80 accommodation rack, 80a rack main body, 81 shelf section, 82 opening section, 83 handle, 84 caster section, 85 supporting and fixing member, 86 block section, 87 receiving section, 88 locking hole, 89 insertion hole, 91 first detection region, 92, 92B second detection region, 93 warning region, 94 lower surface region, 95 detection region, A, B length, M screen mask, S board, P component, W operator.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/JP2021/016430 | 4/23/2021 | WO |
