Patent Grant
11400482
The present invention relates to a device and method for discharging a liquid material, and more particularly to a liquid material discharge device and method, which are featured in an inner flow passage structure. In the present invention, a rod-shaped member capable of opening and closing a communication bore, which is communicated with a discharge port, with reciprocating movement thereof is called a needle.
In a device for discharging a liquid material, controlling the temperature of the liquid material to be kept constant is one important factor from the viewpoint of controlling the amount and the shape of the discharged liquid material to be kept constant. Various techniques for controlling the temperature of the liquid material have been proposed so far.
Patent Document 1 discloses a viscous material discharge device for containing a viscous material, applying pressure to the inside, and discharging the viscous material from a tip, wherein the discharge device comprises a container containing the viscous material and having an opening through which the viscous material is discharged to the outside, pressure applying means for applying pressure to the inside of the container, opening-closing means for opening and closing the opening of the container through which the viscous material is discharged, adjustment means for finely adjusting the opening-closing operation of the opening-closing means from the outside, discharge means including a pipe-shaped discharge device path disposed, to reduce a useless filling space, in the opening through which the viscous material is discharged, a cap fitted over an outer periphery of the discharge means, and holding means for supporting the container and the cap, and for holding temperature constant.
Patent Document 2 discloses a painting device comprising a main tank storing a paint, painting means for discharging the paint, a first circulation tubing line arranged to circulate the paint between the main tank and the painting means, and a heater for heating the paint passing through the first circulation tubing line to a predetermined temperature, wherein the painting device further comprises a sub-tank storing the paint, a second circulation tubing line allowing the paint in the sub-tank to be stored into the sub-tank again, a resupply tubing line connected to the main tank, and changeover means disposed in the second circulation tubing line and supplying the paint, which flows through the second circulation tubing line, to the resupply tubing line.
Patent Document 3 discloses a temperature stabilization method for a wide head or a nozzle block that is used to develop a heated liquid or a molten material through a discharge port over a wide range downstream of the discharge port, wherein at least one passage for a liquid or a molten material is formed in a lengthwise direction of the wide head or the nozzle block, and a liquid or a molten material being the same as the liquid or the molten material discharged from the discharge port is supplied to pass through the passage.
Patent Document 1: Japanese Patent Laid-Open Publication No. 2000-33306
Patent Document 2: Japanese Patent Laid-Open Publication No. 2001-276716
Patent Document 3: Japanese Patent Laid-Open Publication No. 2002-18348
In the case of arranging a heater and a thermosensor near the discharge port of the discharge device as disclosed in Patent Document 1, problems arise in that a space for setting the heater, etc. is needed, and that the size and the weight of a discharge head is increased.
In the case of arranging the discharge device midway the circulation tubing line as disclosed in Patent Document 2, an accumulator or the like needs to be disposed in order to dynamically reduce pulsation of a pump.
Furthermore, when the liquid passes through a flow passage communicating the discharge port and the circulation tubing line with each other, a problem of reduction of liquid temperature occurs because a heater is not disposed in the relevant flow passage.
In the case of forming, in the nozzle block, the branched flow passage for keeping the temperature as disclosed in Patent Document 3, problems arise in that energy efficiency is poor because the liquid temperature reduces in the branched flow passage as well, and that temperature control is difficult to realize.
Meanwhile, when a discharge device is used for spraying, a nozzle tip is apt to dry in a standby mode, and therefore the nozzle tip is sometimes dipped in a solvent, e.g., a thinner, to prevent drying. In such a case, because the solvent is highly volatile and it cannot be heated to high temperature, the nozzle tip is dipped in the solvent at low temperature. This causes a problem that the nozzle tip and a liquid in the nozzle tip are cooled. In other words, a discharge device capable of minimizing reduction of the liquid temperature in the nozzle is demanded in the above application field as well.
In view of the above-described situations, an object of the present invention is to provide a discharge device and method, which can statically suppress the influence of pump pulsation while temperature reduction of a liquid material is minimized.
The present invention provides a liquid material discharge device comprising a nozzle having a discharge port that is opened downwards, a valve seat having a communication bore in communication with the discharge port, a liquid chamber extending vertically and communicating with the communication bore, a needle that is moved inside the liquid chamber in a reciprocating manner to open and close the communication bore of the valve seat, and a circulation flow passage through which the liquid material is supplied to the liquid chamber, wherein the discharge device further comprises a rod-shaped flow passage formation member provided with an outer flow passage having a top opening formed at an upper end thereof and a bottom opening formed at a lower end thereof, and with an inner flow passage having a bottom opening in communication with the outer flow passage and a top opening formed at an upper end thereof, the flow passage formation member is inserted in the liquid chamber in a state that the bottom opening of the outer flow passage and the bottom opening of the inner flow passage are communicated with the communication bore of the valve seat, and the circulation flow passage is constituted by a first flow passage that extends in a direction different from an extending direction of the needle, and that is communicated with the top opening of the outer flow passage in the flow passage formation member, a second flow passage that extends in a direction different from the extending direction of the needle, and that is communicated with the top opening of the inner flow passage in the flow passage formation member, the outer flow passage in the flow passage formation member, and the inner flow passage in the flow passage formation member.
In the liquid material discharge device described above, preferably, a diameter of the outer flow passage in the flow passage formation member is smaller than a diameter of the first flow passage. More preferably, a cross-sectional area of the outer flow passage in the flow passage formation member is not more than ½ of a cross-sectional area of the first flow passage.
In the liquid material discharge device described above, the outer flow passage in the flow passage formation member may be constituted by a groove recessed in an outer periphery of the flow passage formation member, the inner flow passage in the flow passage formation member may be constituted by a penetration bore penetrating through the flow passage formation member, and an outer diameter of the flow passage formation member may be slightly smaller than an inner diameter of the liquid chamber. Moreover, in the liquid material discharge device described above, preferably, the outer flow passage in the flow passage formation member extends around the flow passage formation member once or more in a region from an inlet to an outlet of the outer flow passage. More preferably, the outer flow passage in the flow passage formation member is spirally formed.
The liquid material discharge device described above may further comprise a needle container having the liquid chamber formed therein, and a liquid contact member having the first flow passage and the second flow passage, wherein the needle container and the liquid contact member may be detachably fixed. Preferably, the first flow passage and the second flow passage are constituted by bore that extends within the liquid contact member in a horizontal direction, and that is separated with the presence of the flow passage formation member.
In the liquid material discharge device described above, a porous member or a waterwheel member may be disposed in the outer flow passage in the flow passage formation member.
The liquid material discharge device described above may comprise a tank for storing the liquid material, a heater for adjusting a temperature of the liquid material, a pump for delivering the liquid material from the tank to the first flow passage or the second flow passage, a circulation tubing line that interconnects the tank, the pump, the first flow passage, and the second flow passage, and a controller, wherein the liquid material kept at the adjusted temperature may be supplied to the liquid chamber in a circulated manner. Moreover, the pump may deliver the liquid material to the first flow passage. Alternatively, the pump may deliver the liquid material to the second flow passage.
The present invention provides a liquid material discharge method of discharging a liquid material, which is kept at an adjusted temperature, from a discharge port with the above-described liquid material discharge device including the pump.
According to the present invention, since the circulation flow passage is formed inside the liquid chamber extending vertically, temperature reduction of the liquid material immediately before being discharged can be minimized. Moreover, pulsation of the pump can be statically reduced through the outer flow passage having relatively high flow resistance.
Embodiment for carrying out the present invention will be described below.
A drive section 2 and a liquid contact section 3, which are main components of the discharge device 1 according to this embodiment, will be described in detail below.
[Drive Section]
The drive section 2 is constituted mainly by the piston 5 to which the needle 4 is fixed, a piston container 6 in which the piston 5 is contained in a movable manner, the spring 7 for biasing the piston 5 and the needle 4 toward the valve seat 31, and tube couplings (8, 9) for connecting tubes through which compressed gas for driving the piston 5 is supplied.
The piston container 6 is a member having an airtight space that is formed therein, and that is partitioned by the piston 5 into an upper piston chamber 11 and a lower piston chamber 12. The spring 7 is disposed in the upper piston chamber 11, and the lower piston chamber 12 serves as a chamber to which the compressed gas for driving the piston 5 is supplied. The upper tube coupling 8 and the lower tube coupling 9 are connected respectively to the piston chambers (11, 12) to supply and exhaust the compressed gas. Gas tubes 10 are connected to the tube couplings (8, 9) on the side opposite to the piston chambers (11, 12).
A sealing member C 15 is disposed around a lateral surface of the piston 5 to keep the inside of the upper piston chamber 11 airtight. A sealing member B 14 is disposed in a needle penetration bore B 13, which is formed in a bottom portion of the lower piston chamber 12, to keep the inside of the lower piston chamber 12 airtight.
A stroke adjustment member 16 for adjusting a movement amount of the piston 5 is fixed to an upper end of the piston container 6 such that a maximally retracted position of the piston 5 can be adjusted by changing an amount through which the stroke adjustment member 16 is projected into the inside of the upper piston chamber 11.
The piston 5 is biased by the spring 7 toward the valve seat 31 (downwards). In a state where the compressed gas is not supplied to the piston chambers (11, 12), the tip of the needle 4 is stopped at a position where the tip is in contact with the valve seat 31.
When the compressed gas is supplied to the lower piston chamber 12, the piston 5 is driven upwards against the force of the spring 7. At that time, gas within the upper piston chamber 11 is exhausted through the upper tube coupling 8. Subsequently, when the supply of the compressed gas to the lower piston chamber 12 is stopped and the compressed gas is supplied to the inside of the upper piston chamber 11, the piston 5 is driven downwards by the force of the spring 7. At that time, the gas within the lower piston chamber 12 is exhausted through the lower tube coupling 9.
The upper tube coupling 8 and the lower tube coupling 9 may be each provided with a speed control valve (speed controller). A driving speed of the piston 5 can be controlled by controlling a speed (flow rate) of the gas supplied to the piston chamber (11, 12) and of the gas exhausted from the piston chamber (11, 12) with the speed controller.
[Liquid Contact Section]
The liquid contact section 3 disposed under the drive section 2 in a continuous relation is constituted mainly by a liquid contact member 17, a needle container 18, a nozzle 19, and a flow passage formation member 34.
The liquid contact member 17 is a block-like member having flow passages and a needle penetration bore A 23 both formed therein. Inside the liquid contact member 17, there are formed a horizontal circulation flow passage 32 extending to penetrate through the liquid contact member 17 in a direction (e.g., horizontal direction) different from a direction in which the needle 4 extends, and an insertion bore 22 that is communicated with the horizontal circulation flow passage 32 sideways, and that extends from the horizontal circulation flow passage 32 to penetrate through the liquid contact member 17 in the same direction (e.g., downwards in a vertical direction) as the extending direction of the needle 4. In a structural example of
In the liquid contact member 17, a needle penetration bore A 23 extending in the vertical direction is formed coaxially with the insertion bore 22. The needle 4 is inserted through the needle penetration bore A 23, and a sealing member A 24 is disposed between the needle 4 and an inner wall of the needle penetration bore A 23 to prevent leakage of the liquid material L toward the drive section 2.
The horizontal circulation flow passage 32 in this embodiment is partitioned by the flow passage formation member 34 into a first flow passage 20 on the right side in the drawing and a second flow passage 21 on the left side in the drawing. A liquid tube 27 is connected to the first flow passage 20 through a first connection coupling 25. Similarly, another liquid tube 27 is connected to the second flow passage 21 through a second connection coupling 26. The liquid tubes 27 connected to the couplings 25 and 26 are connected to a circulation mechanism 50 (described in detail later with reference to
The needle container 18 having a cylindrical shape and provided with a flange at its upper end is detachably fixed under the liquid contact member 17. The flow passage formation member 34 inserted to the needle container 18 can be easily removed by disassembling the liquid contact member 17 and the needle container 18. A columnar liquid chamber 33 extending vertically is formed inside the needle container 18 to communicate the insertion bore 22 and the communication bore 30 with each other. The liquid chamber 33 is coaxial with both the insertion bore 22 and the needle penetration bore A 23. Preferably, a diameter of the liquid chamber 33 is substantially the same as an inner diameter of the insertion bore 22.
The valve seat 31 and the nozzle 19 are fixed to a lower end of the needle container 18 by a fixing member 29 in the form of a cap having a hole. The valve seat 31 is a disk-shaped member in which the communication bore 30 is formed at a center. A large part of an upper surface of the valve seat 31 faces an inner flow passage 35, and it is in a state always heated by the liquid material L in the inner flow passage 35. Thus, the valve seat 31 is preferably made of a metal having good thermal conductivity such that heat from the liquid material L is conducted to the communication bore 30. More preferably, the flow passage formation member 34 is made of a metal and an end surface of the flow passage formation member 34 is contacted with the upper surface of the valve seat 31 such that heat from the flow passage formation member 34 is conducted to the valve seat 31.
The nozzle 19 is a cup-shaped member for receiving the valve seat 31, and a discharge port 28 through which the liquid material L is discharged to the outside is formed at the center of the nozzle 19. One end of the liquid chamber 33, which is defined by a lower end opening of the needle container 18, is communicated with the discharge port 28 through the communication bore 30. When the tip of the needle 4 is moved away from the valve seat 31 by driving of the piston 5, the liquid material L is discharged from the discharge port 28, and when the tip of the needle 4 is contacted with the valve seat 31 by driving of the piston 5, the discharge of the liquid material L from the discharge port 28 is stopped. It is to be noted that the shape of the tip of the needle 4 is not limited to the illustrated one, and that the tip of the needle 4 may have any suitable shape insofar as the communication bore 30 can be closed by the needle tip.
[Flow Passage Formation Member]
The flow passage formation member 34 is a cylindrical member having a length spanning from the sealing member A 24 (i.e., the upper end of the horizontal circulation flow passage 32) to the valve seat 31. An outer diameter of the flow passage formation member 34 is slightly smaller than the diameters of the insertion bore 22 and the liquid chamber 33, and the flow passage formation member 34 is detachably inserted in the insertion bore 22. Here, a difference between the outer diameter of the flow passage formation member 34 and the diameters of the insertion bore 22 and the liquid chamber 33 is minimized within a range not impeding insertion and detachment the flow passage formation member 34, in order to transfer the liquid material through an outer flow passage 36 without loss. In other words, the outer diameter of the flow passage formation member 34 is set such that respective inner walls of the insertion bore 22 and the liquid chamber 33 cooperate with an outer lateral surface of the flow passage formation member 34 to form the outer flow passage 36, which is in the shape of a recessed groove, as a closed flow passage. The flow passage formation member 34 is made of a heat-resistant material. For example, the flow passage formation member 34 is made of a metal such as stainless steel or an aluminum alloy, or a heat-resistant resin material such as PEEK (polyether ether ketone). The discharge device 1 can be constituted by fitting the flow passage formation member 34 to an existing discharge device provided with a columnar liquid chamber. In that case, the flow passage formation member 34 is fabricated in size fit for the shape of the liquid chamber of the existing discharge device. The shape of the flow passage formation member 34 is not limited to the cylindrical shape, and the flow passage formation member 34 may be, e.g., a rod-like tapered member provided with a penetration bore that extends in a lengthwise direction thereof, a rod-like member provided with a step on its lateral surface (i.e., including a large-diameter portion and a small-diameter portion), or a rod-like member having a polygonal cross-section.
The flow passage formation member 34 is a columnar member provided with the outer flow passage 36 having a top opening 40 formed at an upper end thereof and a bottom opening 41 formed at a lower end thereof, and with the inner flow passage 35 having a bottom opening 41 in communication with the outer flow passage 36 and a top opening 37 formed at an upper end thereof. In other words, the flow passage formation member 34 includes the inner flow passage 35 penetrating therethrough in the vertical direction (i.e., a direction along its center axis), and the outer flow passage 36 formed in its outer surface as a recessed groove in a surrounding relation to the inner flow passage 35.
A diameter of the inner flow passage 35 is set to be larger than that of the needle 4. In other words, the inner flow passage 35 is constituted in size providing a gap between an outer peripheral surface of the needle 4 and an inner peripheral surface of the inner flow passage 35 with intent not to impede reciprocating movement of the needle 4.
A needle penetration bore C 37 allowing the needle 4 to be inserted therethrough and communicating with the inner flow passage 35 is formed at an upper end of the inner flow passage 35. An inner diameter of the needle penetration bore C 37 is substantially the same as an outer diameter of the needle 4. The inner-flow-passage top opening 38 opened perpendicularly to a center axis (i.e., horizontally) is formed at a position slightly below the needle penetration bore C 37. The inner flow passage 35 is communicated with the outside of the flow passage formation member 34 through the inner-flow-passage top opening 38. An outflow hole 39 through which the communication bore 30 of the valve seat 31 and the inner flow passage 35 are communicated with each other is formed at a lower end of the inner flow passage 35.
The outer flow passage 36 is a single flow passage interconnecting the upper end and the lower end of the flow passage formation member 34 while extending around the flow passage formation member 34, and it is a recessed groove formed in the outer surface of the flow passage formation member 34.
Furthermore, pump pulsation can be reduced by setting a length of the outer flow passage 36 to be longer than a certain value. The length of the outer flow passage 36 can be increased by forming the outer flow passage 36 in a state extending around the outer periphery of the flow passage formation member 34, e.g., two, three, four, five or more times. Increasing the length of the outer flow passage 36 to be longer than a certain value also contributes to reducing an amount of the material of the flow passage formation member 34. This leads to a technical effect of suppressing temperature reduction of the liquid material L when the flow passage formation member 34 is made of a metal.
The outer flow passage 36 and the inner flow passage 35 are communicated with each other only at the outer-flow-passage bottom opening (or an inner-flow-passage bottom opening) 41, and are not communicated with each other at any other positions. Stated in another way, the outer flow passage 36 and the inner flow passage 35 are separated by an outer peripheral wall of the flow passage formation member 34. The outer-flow-passage top opening 40 in communication with the outside of the flow passage formation member 34 is formed at the upper end of the outer flow passage 36, and the outer-flow-passage bottom opening 41 in communication with the inner flow passage 35 is formed at the lower end of the outer flow passage 36. As illustrated in the A-A sectional view of
On the other hand, the outer-flow-passage bottom opening 41 illustrated in the B-B sectional view of
Sizes of the inner flow passage 35 and the outer flow passage 36 are described below in connection with specific examples.
For example, when the needle container 18 has a size of φ12 [mm]×40 [mm], the outer flow passage 36 is preferably formed in a cross-sectional area in the range of 1 to 6 [mm2] and a length in the range of 20 to 80 [mm]. The diameter of the inner flow passage 35 is preferably formed in the range of 1.5 to 2.5 times the diameter of the needle 4. On the other hand, at least the first flow passage 20 is formed in a diameter of 4 to 6 [mm] (cross-sectional area of 12.6 to 28.3 [mm2]) such that it has preferably a larger cross-sectional area (to be fatter), more preferably twice or more, and even more preferably triple or more than that of the outer flow passage 36. As a result, the outer flow passage 36 functions as resistance when the liquid material L flows through the circulation flow passage, thus making it possible to suppress pulsation of a pump 53 used for the circulation (namely, to prevent the pulsation from being transmitted to the discharge port 28 of the nozzle 19). More preferably, the diameter of the first flow passage 20 and the diameter of the second flow passage 21 are set to be the same. It is to be noted that the above-mentioned values may be adjusted, as required, depending on the physical properties of the liquid material L, the size of the discharge device 1, etc., and that the present invention is not limited to the above-mentioned exemplary numerical values.
[Liquid Material Filling Step]
A step of filling the liquid material L into the flow passages (35, 36) formed in the flow passage formation member 34 will be described below with reference to
As denoted by a reference symbol 42 in
[Circulation Mechanism]
The discharge device 1 of this embodiment is connected to the circulation mechanism 50 for circulating the liquid material L.
The circulation mechanism 50 illustrated in
The tank 51 has a capacity sufficient for the discharge device 1 to perform the operation of applying the liquid material, and the liquid material in the tank is kept at a setting temperature by the heater 52. The tank 51 may include a stirrer for stirring the liquid material in the tank. Connected to the tank 51 are a liquid tubing line 55 through which the liquid material is delivered, and another liquid tubing line 55 through which the liquid material after having passed the discharge device 1 is recovered. The pump 53 is disposed between the former liquid tubing line 55 through which the liquid material is delivered and the discharge device 1. The liquid material L fed under pressure by the pump 53 flows to circulate through the tank 51→the pump 53→the regulator 61→the discharge device 1→the tank 51 successively, as denoted by a reference symbol 58. An amount of the discharged liquid material can be adjusted by regulating pressure of the liquid material L (i.e., discharge pressure) by the regulator 61. In this embodiment, although pulsation is generated due to circulation of the liquid material L by the pump 53, the pulsation is statically reduced through the flow passage formation member 34, and therefore an accumulator is not disposed in a circulation flow path of the circulation mechanism 50 (an accumulator may be disposed, for example, in the case of applying the liquid material with ultra-high precession).
The heater 52 and the pump 53 are connected to the controller 54 via a control wiring line 57, and their operations are controlled by the controller 54. The controller 54 is connected to the discharge device 1 via gas tubing lines 56, and it controls supply and exhaust of the compressed gas, thereby controlling the discharge operation. It is also possible to automatically regulate the pressure of the liquid material L (i.e., the discharge pressure) by employing an electro-pneumatic regulator as the regulator 61, and by connecting the controller 54 to the regulator 61.
For example, when the discharge device 1 is employed in use for coating an insulating moisture-proof agent over a circuit board, the setting temperature is 35 to 40° C. and the viscosity of the liquid material is 40 to 60 [mPa·s].
The discharge device 1 connected to the circulation mechanism 50 is mounted to an XYZ-direction moving apparatus (not illustrated), and an applying operation is performed while the discharge device 1 is moved relatively to a work table on which an application target is placed. The XYZ-direction moving apparatus can be constituted, for example, by a combination of an electric motor and a ball screw, a mechanism using a linear motor, or a mechanism for transmitting motive power through a belt or a chain.
With the circulation mechanism 50 described above, since the discharge port 28 is disposed near the circulation flow passage (20→36→35→21) within the discharge device 1, temperature reduction in the flow passage communicating the circulation flow passage and the discharge port with each other is minimized. Furthermore, since a flow passage structure in which the outer flow passage 36 extends around the inner flow passage 35 is disposed until reaching the lower end of the elongate needle container 18, prevention of temperature change of the liquid material L can be realized with high energy efficiency. Moreover, the pump pulsation can be statically reduced through the outer flow passage 36 having the cross-sectional area smaller than those of the first flow passage 20 and the second flow passage 21. In addition, in maintenance work, since the flow passage formation member 34 can be easily taken out from the insertion bore 22 and the outer flow passage 36 is in the form of a recessed groove opened to the outside, it is easy to remove stains. Accordingly, the discharge device is suitably used to discharge even a liquid material containing filler or a liquid material curing over time such as an adhesive.
The above description is premised on the case where the liquid material L is supplied from the first connection coupling 25 and is taken out from the second connection coupling 26, the effect of the present invention, i.e., the advantages of keeping the liquid material L less apt to cool and enabling the pump pulsation to be reduced, can also be developed even when the liquid material L is supplied from the second connection coupling 26 and is taken out from the first connection coupling 25.
The second to fifth embodiments are different from the first embodiment in the shape of the outer flow passage 36 in the flow passage formation member 34, but the other points are the same as in the first embodiment. Outer flow passages 36 formed in flow passage formation members 34, disclosed in the following embodiments, are each in the form of one continuous groove having a uniform cross-sectional area, and optimum one of the embodiments is selected depending on the physical properties of the liquid material L, the application conditions, etc.
The sixth to ninth embodiments are different from the first to fifth embodiments in the shape of the outer flow passage 36 in the flow passage formation member 34, but the other points are the same as in the first to fifth embodiments. The sixth to ninth embodiments are different from the first to fifth embodiments in that, while the intervals between adjacent parts of the outer flow passage 36 in the axial direction are even in the first to fifth embodiments, the intervals between adjacent parts of the outer flow passage 36 in the axial direction are not even in the sixth to ninth embodiments. The flow passage formation members 34 according to the sixth to ninth embodiments are each cylindrical, and shapes of inner flow passages 35 are each the same as in the first to fifth embodiments. Therefore, description of the inner flow passages 35 is omitted.
As a result, a temperature difference can be given to the liquid material L in the inner flow passage 35 such that the temperature in the region where the interval is narrow is relatively high, and that the temperature in the region where the interval is wide is relatively low. While the sixth to ninth embodiments have been described, by way of example, in connection with the case of the spiral flow passage, it is also of course practicable, in the not-spiral flow passages as in the fourth embodiment (
1: liquid material discharge device, 2: drive section, 3: liquid contact section, 4: needle, 5: piston, 6: piston container, 7: spring, 8: upper tube coupling, 9: lower tube coupling, 10: gas tube, 11: upper piston chamber, 12: lower piston chamber, 13: need penetration bore B, 14: sealing member B, 15: sealing member C, 16: stroke adjustment member, 17: liquid contact member, 18: needle container, 19: nozzle, 20: first flow passage, 21: second flow passage, 22: insertion bore, 23: needle penetration bore A, 24: sealing member A, 25: first connection coupling, 26: second connection coupling, 27: liquid tube, 28: discharge port, 29: fixing member, 30: communication bore, 31: valve seat, 32: horizontal circulation flow passage, 33: liquid chamber, 34: flow passage formation member, 35: inner flow passage, 36: outer flow passage, 37: needle penetration bore C, 38: inner-flow-passage top opening, 39: outflow hole (inner-flow-passage bottom opening), 40: outer-flow-passage top opening, 41: outer-flow- passage bottom opening, 42, 43, 44, 45: flow of liquid material, 50: circulation mechanism, 51: tank, 52: heater, 53: pump, 54: controller, 55: liquid tubing line, 56: gas tubing line, 57: control wiring line, 58: circulation flow, 59: porous member, 60: waterwheel member, 61: regulator, L: liquid material
| Number | Date | Country | Kind |
|---|---|---|---|
| JP2013-230464 | Nov 2013 | JP | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/JP2014/079289 | 11/5/2014 | WO | 00 |
| Publishing Document | Publishing Date | Country | Kind |
|---|---|---|---|
| WO2015/068708 | 5/14/2015 | WO | A |
| Number | Name | Date | Kind |
|---|---|---|---|
| 3743187 | Breunsbach | Jul 1973 | A |
| 4687137 | Boger | Aug 1987 | A |
| 5076236 | Yu | Dec 1991 | A |
| 5336320 | Hogan et al. | Aug 1994 | A |
| 6182908 | Hamilton | Feb 2001 | B1 |
| 6823833 | Ismailov | Nov 2004 | B2 |
| 9074568 | Kang | Jul 2015 | B2 |
| 20150048120 | Ikushima | Feb 2015 | A1 |
| Number | Date | Country |
|---|---|---|
| 60-5251 | Jan 1985 | JP |
| 60-005251 | Nov 1985 | JP |
| 5-111659 | May 1993 | JP |
| 2000-33306 | Feb 2000 | JP |
| 2001-276716 | Oct 2001 | JP |
| 2002-18348 | Jan 2002 | JP |
| 2013-192972 | Sep 2013 | JP |
| Entry |
|---|
| International Search Report dated Feb. 3, 2015, issued in counterpart International Application No. PCT/JP2014/079289. (2 pages). |
| International Preliminary Report on Patentability (Form PCT/IPEA/409) issued in counterpart International Application No. PCT/JP2014/079289 dated Nov. 18, 2015. (7 pages). |
| Number | Date | Country | |
|---|---|---|---|
| 20160279664 A1 | Sep 2016 | US |
