The present invention relates to an automatic machine for covering books.
Machines for covering the covers of books by means of specific sheets of flexible plastic material, which are supplied in single piece or unwindable from a continuous roll are known.
Some of said machines are of the portable type and are provided with a lower base, which defines a resting surface for the sheet (single or unwindable from a roll) used for the covering the cover of the book, and an upper part movable towards said base starting from a rest position.
The upper part consists of two sides connected by a crosspiece. A space defined between the base and the upper part allows to introduce plastic sheet ends to be welded while the article is positioned against the front of crosspiece.
The crosspiece carries a welding blade which collaborates with a fixed counter-blade restrained to the base and can be warmed by means of an electric resistance fed through the electric circuitry.
A machine for continuously making the covering cover of books is described in patent EP 2532526 and comprises means for cutting a film unwound from a coil to make film sheets, devices for folding the ends of the film sheet, a device adapted to control the folding devices and the cutting devices as a function of the dimensions of the covers; the folding devices comprise rolls arranged so as to make a scheduled passage and a folding blade configured to force the film sheet in the scheduled passage to fold the first end of the film sheet.
However, covering the book covers is rather laborious and complex in said machine.
It is the object of the present invention to provide an automatic machine for covering books which is simpler and more effective than the known automatic machines.
According to the present invention, such an object is achieved by an automatic machine for covering the covers of a book of different dimensions starting from a film sheet, said machine comprising a work plane on which said film sheet is placed, said machine comprising welding and cutting means of the film sheet, first and second folding means for folding the ends of the film sheet and a control unit adapted to control the welding and cutting means and said first and second folding means as a function of the book dimensions for the covering operation of the book covers, characterized in that it comprises reception and gripping means configured to receive said book with the open covers at the input position and adapted to grip the book body outside the work plane and transport the book to the working position over the film sheet for the covering operation of the book covers, said control unit being adapted to control said reception and gripping means, said control unit being configured to control said first and second folding means to fold the ends of the film sheet on the book covers.
The features and advantages of the present invention will become apparent from the following detailed description of a practical embodiment thereof, shown by way of non-limiting example in the accompanying drawings, in which:
Book 1 to be inserted into the machine is arranged as in
The machine comprises means 10 configured to receive a book 1 with the covers 2, 3 in open position substantially at ninety degrees with respect to body 4 of the book and with back 111 of book 1 facing downwards at the input position A. Said means comprise a tray 11 normally arranged on a horizontal plane, and an element 12 provided with a pair of walls 13, 14 perpendicular to tray 11; book 1 is inserted by a user so that the book covers 2, 3 rest on tray 11 and body 4 of the book is inserted inside the walls 13, 14 of element 12, as shown in
Element 12 belongs even to the means 20 for gripping the book, in addition to allowing the arrangement of the body 4 of book 1 inside the walls 13, 14. The gripping means 20 comprise a sensor 21 accommodated in a rear wall 22 arranged perpendicular to the walls 13, 14 and to tray 11, as shown in
Element 12 is carried by a carriage 24 sliding on an upper crosspiece 25 of frame 6 of the machine; the carriage is moved by an electric motor 26 and a belt 27 engaged with the electric motor 26 and with element 12. The gripping means 20 also comprise motors 28 adapted to allow to close the walls 13, 14 on the body 4 of book 1 to grip the book.
Once the operation of covering the covers 2, 3 of book 1 with the film sheet 5 has been completed, element 12 is adapted to transport book 1 outside the work plane 23 to unload it. Preferably, the rear wall 22 is moved by an electric motor 29 which causes the opening thereof to unload or eject book 1 once the operation of covering the book has been completed.
Preferably, the film sheet 5, preferably a clear film sheet or of the colored and clear type, preferably a plastic film, derives from a film coil 51 and the machine comprises means 50 adapted to produce film sheets 5 and means 60 adapted to arrange the film sheet 5 on the work plane 23, as better seen in
Element 12 carries book 1 inside the machine up to the work position A1 in which it places book 1 onto the film sheet 5 arranged on the work plane 23.
The machine also comprises a movable gate 40 adapted to be raised with respect to the horizontal plane A of tray 11 to prevent the input of another book to be covered during the operation of covering book 1.
Devices 70 for measuring the length Lu of book 1 are activated when transporting book 1 towards position A1; said measure devices preferably comprise two sensors 71, in particular two photo-electric cells, arranged on the work plane 23 and adapted to measure the length Lu of the book. Once book 1 has reached position A1, the devices 75 for measuring the width La of the book are activated; said measure devices are two photo-electric cells 76 adapted to measure the width La of the book.
The machine comprises means 80 for welding and cutting the film sheet 5, which comprise a device 81 and a device 82. The welding and cutting means 80 are adapted to cut and weld the sheet of the film sheet 5 already folded by the first 91 and the second 92 folding means, both on the upper and the lower side of the book. Device 81 is arranged close to position A1 on the work plane, while device 82 is arranged outside the work plane 23 and close to the input position A of book 1. Device 82 is configured to translate towards and away from the work plane 23 along axis X; device 82 is configured to translate towards the work plane 23 along axis X as a function of the length Lu of book 1 measured by the measure devices 70. Device 82 comprises a tray 84 and a cutting and welding blade 83 which is configured to rotate from a rest position T1 to an intermediate rest position T2, up to a work position T3 for laterally welding and cutting the film sheet 5, where position T3 rests on the horizontal plane coplanar to the work plane 23, preferably, position T1 is below the horizontal plane coplanar to the work plane 23, for example in a position in which the cutting and welding blade should perform a rotation by an angle of 200° to reach position T3, and preferably position T2 is over the horizontal plane coplanar to the work plane 23, for example in a position in which the cutting and welding blade should perform a rotation by an angle of 90° with respect to position T3. Device 81 comprises a cutting and welding blade 85 which is configured to rotate from a rest position T4 to an intermediate position T6, up to a work position T5 on the work plane 23 for laterally welding and cutting the film sheet 5, where position T5 rests on the horizontal plane coplanar to the work plane 23, preferably, position T4 always lies below the horizontal plane coplanar to the work plane 23, but in a position in which the cutting and welding blade 85 should perform a rotation by an angle of 180° to reach position T5, and preferably position T6 is over the horizontal plane coplanar to the work plane 23, for example in a position in which the cutting and welding blade 85 should perform a rotation by an angle of 90° with respect to position 15.
The machine comprises first 91 and second 92 means for folding the respective ends 7, 8 of the film sheet 5 on the book covers 2, 3. The first 91 and second 92 folding means are adapted to carry the side ends 7, 8 of the film sheet 5 on the internal part of the covers 2, 3 of book 1. The first 91 and second 92 folding means each comprise a flap 93 moved by an electric motor 94; each flap 93 is capable of shifting on the work plane 23 along an axis Y, perpendicular to axis X but coplanar thereto, to fit the width of book 1 and is capable of rotating by 180° to fold the ends 7, 8 of the film sheet 5 on the covers 2, 3. The flaps 93 are arranged on the work plane 23 when they shift or are in rest position; the flaps 93 preferably comprise the two photo-electric cells 76 adapted to measure the width La of the book.
The machine comprises a control unit 100 adapted to control said welding and cutting means 80 and said first 91 and second 92 folding means as a function of the dimensions of the book; said control unit 100 controls the first 91 and the second 92 folding means to carry the side ends 7, 8 of the film sheet 5 on the internal part of the covers 2, 3 of book 1 and then the welding and cutting means 80 to cut and weld the sheet of the film sheet 5 already folded by the first 91 and second 92 folding means, both on the upper and the lower side of the book. The control unit 100 controls the means 50, the means 60, the reception means 10 and the gripping means 20, and the various measure means for measuring the length Lu, the width La and the bordure D of book 1, and calculates the length Lu, the width La and the bordure D of book 1.
The machine comprises means 110 for measuring the bordure of the book, that is thickness D created between covers 2,3 and edge 111 of the book when the book is made and due to the gluing of the book pages with the material of edge 111 of the book.
The measure means 110 comprise sensors 112 arranged in the walls 13, 14 of element 12; when the book is at the position A1, the walls 13, 14 are lowered onto book 1 so as to allow the measurement of bordure D.
As described above, the film sheet 5 preferably derives from a film coil 51 and the machine comprises means 50 adapted to produce film sheets 5 and means 60 adapted to arrange the film sheet 5 on the work plane 23, as better seen in
The machine works in the following manner. All the various work steps of the machine according to the invention are coordinated by the control unit 100.
Initially in step F1, book 1 is arranged on tray 11 with the covers 2, 3 in open position, that is substantially rotated by 90° with respect to the body 4 of book 1 and with back 111 facing downwards. Device 82 is stopped and the cutting and welding blade 83 is in position T3, the cutting and welding blade 85 of device 81 is in position T4 and the flaps 93 of the first and second folding means are coplanar to the work plane 23; the film sheet 5 is arranged over the work plane 23.
Then in step F2, the body 4 of book 1 is inserted into the reception element 12 between the walls 13, 14 up to touching sensor 21 arranged on wall 21.
The contact of body 4 with sensor 21 is detected by the control device 100 which controls the motors 28 to close the walls 13, 14 on the body 4 of book 1 to grip book 1. The control device 100 controls the heating of the electric resistors of the devices 81 and 82 up to reaching a given temperature (for example 130° C.) for the successive welding operation.
Then (step F3), once book 1 has been taken by the gripping means 20, the control device 100 controls the gripping means 20 to raise the book itself and transport it to position A1 by translating along axis X; the transport of the book 1 occurs like a dragging operation of book 1 since the covers 3, 4 are always kept in open position substantially at 90°, in the transporting operation, and the covers rest on tray 84 which is configured to translate to then reach the work plane 23. The arrival at the position A1 is indicated by specific means, for example an encoder mounted on the motor.
In the translation, book 1 passes over device 82 thus activating the sensors 71 for measuring the length Lu of book 1; when the book reaches position A1, the control device 100 controls raising gate 40 and the arrangement of the cutting and welding blade 93 of device 82 from position T1 to position T2 over the work plane 23, and of the cutting and welding blade 85 of device 81 in position T6.
Then (step F4), the control device 100 controls element 12 to partly release book 1 onto the film sheet 5 already arranged on the work plane 23 and controls lowering the walls 13, 14 onto the covers 2, 3 of book 1 so the sensors 112 measure bordure D of the book.
Then, there is the operation (F5-F8) of covering the covers 2, 3 of book 1 with the film sheet 5.
In step F5, the control device 100 controls the flaps 93 to shift along axis Y, perpendicular to axis X, so as to move away from the area where edge 111 of the book is arranged; the flaps 93 carry the sensors 76 adapted to measure the width La of book 1.
Once the width La of the book has been measured, the control device 100 controls the rotation of the flaps 93 on the book covers 2, 3 (for example by 180°) so as to carry the side ends 7, 8 of the film sheet 5 on the internal part of the covers 2, 3, that is in an adjacent manner to the internal part of the covers 2, 3 (step F6).
Then (step F7), the control device 100 controls the shifting of the flaps 93 so that both move away from the edge 111 of book 1 to compensate for bordure D of the book. Thereby the total width of the book is given by the width La+2×D.
Then (step F8), the control device 100 controls the translation of device 82 as a function of the length Lu of book 1 and controls the welding and cutting blades 83, 85 to go to the respective positions T3 and T5 to weld the film sheet 5, that is the folded film sheet 5, both on the upper and lower side of book 1, along axes parallel to axis Y, and cut the film sheet 5, again both on the upper and lower side of book 1, along axes parallel to axis Y, so as to eliminate the remaining part of the film sheet 5. During the welding, the flaps 93 return to the starting position, that is the control device 100 controls the flaps to be arranged in a coplanar manner to the work plane 23 or to a plane parallel thereto.
The successive step F9 provides for the control device 100 to control the devices 81 and 82 to return to the rest positions T4, T2 and element 12 to grip the body 4 of book 1 to transport it outside the work plane 23 on the side of the machine which is opposite to the input part of book 1. In the ejection step of book 1, the rear wall 22 rotates so as to open and allow the ejection or discharge of the book.
In the successive step F10, element 12 is controlled by device 100 to return to the starting position by means of a sliding carriage 24 on the upper crosspiece 25 to receive a new book 1 to be covered; device 82 is controlled by device 100 to return to the initial position with the cutting and welding blade 83 which returns to position T1 to allow the lowering of gate 45.
Preferably, the film sheet 5 comes from a film coil 51; in an initial step D1, the control device 100 controls the moving means 52 to unwind the coil up to the predetermined measurement measured by the measure means 54. The film of the coil preferably comprises measure notches and the means 54 are configured to detect said notches.
Alternatively, in step D1, the control device 100 controls the moving means 52 to unwind the coil up to a predetermined measurement as a function of the width La of the book measured by the further devices adapted to measure the width La of the book which are arranged close to tray 11, preferably at the input position A of the book.
In the successive step D2, the film sheet 5 is cut by means of blade 55 controlled by device 100, and in the successive step D3, the film sheet 5 is carried by the belt element 61 (for example a buffer), again controlled by device 100, up to end 62 of the work plane 23; a pressure unit 58 preferably holds the film sheet unwound from coil 51 stationary only during cutting.
In a successive step D4 again, a gripper 63, again controlled by device 100, takes and drags the film sheet 5 to arrange it on the work plane 23.
Preferably, to speed up the operation of covering the book, the steps D1 and D2 for making a new film sheet 5 are carried out during the steps F6-F8 of covering book 1, step D3 is carried out during step F9 and step D4 is carried out after step F10.
The machine according to the invention is compact and provided with wheels 300 for the easy movement thereof.
According to a variant of the embodiment of the present invention, in addition to the elements of the embodiment of the present invention, the automatic machine for covering books comprises fins 165 provided with springs in the opening 161 of the reception means 10, as shown in
According to another variant of the embodiment of the present invention, in addition to the elements of the embodiment of the present invention or of the variant, the automatic machine for covering books comprises means 600 for rotating the upper crosspiece 25 of frame 6 of the machine about a vertical axis, an axis Z perpendicular to the axes X and Y, as shown in
According to a further variant of the embodiment of the present invention, in addition to the elements of the embodiment of the present invention or of the variant of the other variant, the automatic machine for covering books comprises a motorized roller 701 moved by suitable means and parallel to the cutting and welding blade 83, as shown in
Number | Date | Country | Kind |
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102017000007352 | Jan 2017 | IT | national |
Filing Document | Filing Date | Country | Kind |
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PCT/IB2018/050405 | 1/23/2018 | WO | 00 |
Publishing Document | Publishing Date | Country | Kind |
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WO2018/138636 | 8/2/2018 | WO | A |
Number | Name | Date | Kind |
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3326578 | Fener | Jun 1967 | A |
Number | Date | Country |
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0 908 328 | Apr 1999 | EP |
2 532 526 | Dec 2012 | EP |
2010-137557 | Jun 2010 | JP |
Entry |
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International Search Report, dated Apr. 30, 2018 (10 pages). |
Number | Date | Country | |
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20190344599 A1 | Nov 2019 | US |