Laminated sheet take-out and supply device

Abstract

To provide a laminated-sheet take-out / supply device that can pick up a sheet from laminated sheets and satisfactorily supply it to a sheet hopper of a box-packing machine.SOLUTION: A laminated sheet take-out / supply device includes: misalignment detecting means 18 for detecting misalignment in a horizontal plane of the uppermost sheet 10 of laminated sheets 11; right-left moving means 20 and a front-back moving means 21 of sucking means 19 for sucking and picking up the sheet 10; a lifter 23 for lifting the laminated sheet 11 so as to maintain an upper position of the laminated sheet 11. The sucking means 19 is moved and aligned to a sheet suction position determined for each type of the sheet 10 by the front-back moving means 21 and the right-left moving means 20 according to a sheet position detected by the misalignment detecting means 18, and then the sheet 10 is picked up by the sucking means 19, and the sucking means 19 is moved by the right-left moving means 20 to above the sheet hopper 12 to release the suction.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a laminated sheet take-up and supply device that picks up stacked sheets such as cardboard sheets and supplies them to a boxing machine such as a cardboard caser. [Background technology]

[0002] As disclosed in Patent Documents 1 and 2, there is known a device that picks up stacked sheets, such as cardboard sheets stacked on a pallet, in units of multiple sheets and supplies them as a sheet bundle to a boxing machine such as a caser or cartoner. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 5918157 [Patent Document 2] Japanese Patent Application Publication No. 8-11835 Summary of the Invention [Problem to be solved by the invention]

[0004] In the devices disclosed in Patent Documents 1 and 2, when stacks are transferred onto a pallet using, for example, a lift, misalignment may occur in the stacked state of the sheets. Once misalignment occurs, it is extremely difficult to correct the misalignment, and the sheets must be handled in a way that prevents misalignment in the stack. Furthermore, if a sheet is picked up from the misaligned stack of sheets and transferred to a sheet supply section of a boxing machine, there is a risk of sheet transport problems in the boxing machine.

[0005] SUMMARY OF THE INVENTION An object of the present invention is to provide a stacked sheet take-up and supply device that can efficiently pick up sheets from a stack of sheets and efficiently supply sheets to a sheet hopper of a boxing machine. [Means for solving the problem]

[0006] The laminated sheet take-out and supply device of the invention according to claim 1 of the present application comprises: A stacked sheet take-out and supply device that picks up the topmost sheet (10) of a stacked sheet (11) placed on a table (24) one by one by a suction means (19) and supplies the topmost sheet (10) to a sheet hopper (12) of an adjacent boxing machine, positional deviation detection means (16, 17, 18) for detecting a positional deviation of the uppermost sheet (10) in a horizontal plane; a first moving means (20) for moving the suction means (19) that has picked up the sheet (10) back and forth in a first direction in which the suction means (19) moves laterally toward the sheet hopper (12), and a second moving means (21) for moving the suction means (19) back and forth in a second direction intersecting the first direction; a sheet detection means (22) for detecting the amount of stacking of the laminated sheet (11); a lifter (23) for varying the support height of the table (24) so ​​as to adjust the height of the upper surface of the stacked sheets (11) to a predetermined height based on the amount of stacked sheets (10) detected by the sheet detection means (22); Each time the uppermost sheet (10) is picked up, the suction means (19) is moved by the first moving means (20) and the second moving means (21) to a sheet suction position (G) determined for each type of sheet (10) in accordance with the sheet position detected by the position deviation detection means (16, 17, 18), and the sheet (10) is sucked and picked up, and the sheet (10) is transported to a predetermined position above the sheet hopper (12). In the invention of claim 1, when picking up a sheet one by one from the stack of sheets, the positional deviation of the sheet is detected each time and the suction means is moved to a sheet suction position determined for each type of sheet to adsorb the sheet, so that even if the sheet is misaligned, the sheet can be picked up properly. Also, even if there is a misalignment of the sheets stacked on a mounting table such as a pallet, the suction means corrects its position so that the sheet is adsorbed and picked up at the correct position. Therefore, even if there is a misalignment of the stack of sheets or a misalignment of the stack of sheets relative to the mounting table, the sheet can be properly picked up and delivered to the sheet hopper of the box packing machine.

[0007] The invention according to claim 2 is characterized in that the positional deviation detection means (18) for detecting either the front or rear end of the sheet (10) in the first direction is provided on the moving section (34) which moves together with the suction means (19) by the first moving means (20). According to the invention of claim 2, since the positional deviation detection means is provided in the moving section that moves together with the suction means by the first moving means, the positional relationship between the suction means and the positional deviation detection means is always constant, and the suction means can be accurately positioned at the sheet suction position. Furthermore, the positional deviation detection means can detect one edge of the sheet during the return process after the first moving means has transported the sheet to the sheet hopper, thereby determining the positional deviation of the sheet. This allows for good deviation detection without changing the position of the positional deviation detection means even when sheets of different sizes are used interchangeably. Furthermore, the positional deviation detection means for only one of the forward and backward movement directions in the first direction can effectively detect the positional deviation of sheets that are symmetrical in the forward and backward directions in the first direction.

[0008] In the invention of claim 3, the adsorption means (19) is provided with adsorption bodies (19a, 19b) spaced apart from each other in the front and rear of the second direction, and is provided with the second moving means (21) that can move the adsorption bodies (19a, 19b) independently back and forth, and is characterized in that the positional deviation detection means (16, 17) that detects the front and rear ends of the sheet (10) that are front and rear in the second direction are provided on a moving section (30) that is moved by the second moving means (21) together with each adsorption body (19a, 19b). According to the invention of claim 3, a positional deviation detection means is provided on each moving section that moves together with the adsorbent by the second moving means that moves each adsorbent independently in the second direction. Therefore, even for sheets in which the center of the mounting table does not coincide with the center of the stacked sheets in the second direction, the positional deviation of each sheet can be detected in response to the placement deviation, and each adsorbent that moves apart in the second direction can be positioned in the appropriate position in response to the deviation, thereby allowing the sheets to be successfully removed one by one.

[0009] The invention according to claim 4 is characterized in that it comprises lifting means (29a, 29b) that independently lift and lower the attracting bodies (19a, 19b) that are spaced apart in the second direction, and the lifting means (29a, 29b) start lifting the attracting bodies (19a, 19b) at different times to pick up the sheet (10). According to the invention of claim 4, the timing at which the adsorption bodies moving away from each other in the second direction start to rise is varied to pick up the sheet at an angle, thereby preventing poor lifting such as negative pressure being generated between the sheet being picked up and the sheet below, causing the sheet to overlap with the lower sheet and be lifted up, and the top sheet can be separated well from the sheets below, allowing only one sheet to be picked up.

[0010] The invention according to claim 5 is characterized in that a receiving portion (43) capable of supporting the sheet (10) dropped and supplied from the suction means (19) is provided above the sheet hopper (12), and an alignment means (44) for positioning the front and rear side edges of the sheet (10) supported by the receiving portion (43) in the first and second directions. According to the invention of claim 5, the sheet supplied from the suction means is received by the receiving section above the sheet hopper, and the front and rear edges of the sheet in the first and second directions are positioned by the alignment means. Therefore, even if the position of the sheet changes when it is received by the receiving section from the suction means, the sheet can be supplied to the sheet hopper with its center aligned.

[0011] In the invention according to claim 6, the receiving portion (43) is configured by a gate (45) capable of closing a passageway for the sheets to fall onto the upper part of the stack of sheets in the sheet hopper (12). According to the invention of claim 6, the sheet transported to the top of the sheet hopper by the suction means is first received and aligned by a receiving section that blocks the falling passage, and then the gate is opened to allow the sheet to fall to the top of the stack of sheets in the sheet hopper.This shortens the falling distance, suppresses changes in the sheet's posture up to the sheet hopper, and prevents poor delivery.

[0012] In the invention of claim 7, the alignment means (44) is characterized by including edge alignment guides (48, 49a, 49b) that press the outsides of the front and rear side edges of the sheet (10) in the first and second directions, respectively, and drive means (51, 53) that operate the edge alignment guides (48, 49a, 49b). According to the seventh aspect of the present invention, the position of the sheet can be corrected to coincide with the center of placement on the sheet hopper, and the sheet can be dropped and supplied to the sheet hopper in a state where it is positioned at an appropriate position. [Effects of the Invention]

[0013] According to the present invention, when picking up sheets one by one, the positional deviation of the sheet is detected and the suction means is moved to a sheet suction position determined for the sheet according to the amount of deviation, thereby preventing picking up errors and enabling sheets to be supplied smoothly to the sheet hopper of the boxing machine. [Brief explanation of the drawings]

[0014] [Figure 1] FIG. 2 is a schematic front view showing the take-out supply device. [Figure 2] FIG. 2 is a schematic plan view showing the take-out supply device. [Figure 3] FIG. 2 is a schematic side view showing a take-out feeding device. [Figure 4] 10A and 10B are explanatory diagrams showing the relationship between a positional deviation detection unit, a reference placement position, and a sheet adsorption position; DETAILED DESCRIPTION OF THE INVENTION

[0015] Next, a preferred embodiment of a laminated sheet take-out and supply device according to the present invention will be described below with reference to the accompanying drawings. [Example]

[0016] As shown in Fig. 1, the take-out / feeding device of this embodiment picks up sheets 10 one by one from the top of a stack 11 of sheets 10, such as unfolded cardboard sheets, and supplies them to a sheet hopper 12 of a boxing machine. The sheets 10 are unfolded sheets before being made into a box by the boxing machine. As shown in Fig. 2, the direction in which the four panels, bottom panel 13, side panels 14, 14, and top panel 15, which form the body of the box when assembled, are arranged is referred to as the front-to-rear direction (second direction), and the direction in which flaps 13a, 14a, 14a, 15a connected to each panel 13, 14, 14, 15 extend perpendicular to the front-to-rear direction is referred to as the left-to-right direction (first direction). A glued flap 15b is connected to the top panel 15 on the side opposite to the side to which the side panel 14 is connected. Furthermore, fold lines K are formed at the connecting portions of the panels 13, 14, 15 and the flaps 13a, 14a, 15a, 15b, and slits are formed between the flaps 13a, 14a, 14a, 15a adjacent in the front-rear direction.

[0017] As shown in Figures 1 to 3, the take-out and supply device is equipped with positional deviation detection means 16, 17, 18 that detect positional deviation in the horizontal plane of the top sheet 10 of the stacked sheets 11 that has been sent to the pallet station P and placed on a pallet (loading table) 24, a left-right moving means (first moving means) 20 that moves the suction means 19 that adsorbs and picks up the top sheet 10 back and forth (horizontally, back and forth in the first direction, which is the sheet supply direction) between the pallet station P and the adjacent sheet hopper 12, and front-back moving means (second moving means) 21, 21 that moves in a direction perpendicular to the left-right moving means 20 (second direction), and a lifter 23 that changes the support height of the pallet 24 so as to maintain the top end position (top surface height) of the stacked sheets 11 at a predetermined height due to reduction in the stacked sheets 11 based on detection by a sheet detection means 22, such as a photoelectric sensor, that detects the top end position of the sheets 10 in the stacked sheets 11. The take-out and supply device is configured to move and align the suction means 19 using the left-right movement means 20 and the front-back movement means 21, 21 to position the suction means 19 at a sheet suction position G determined to correspond to different types of sheets 10, such as differences in the size of the flaps and panels of the sheets 10, the thickness of the sheets, their positional relationship with the flaps and fold lines, and other differences in box sizes, depending on the sheet position detected by the positional deviation detection means 16, 17, 18, and then pick up the top sheet 10 with the suction means 19, position the suction means 19 using the left-right movement means 20 above the sheet hopper 12 so that the left-right center of the sheet 10 is aligned with the left-right center of the sheet hopper 12, and release the suction of the sheet 10 by the suction means 19, thereby supplying the sheet 10 to the sheet hopper 12.

[0018] 2 and 3, the lifter 23 includes a pair of lifting members 25, 25 that support from below the front and rear edges of the pallet 24 on which the stacked sheets 11 are placed, and a pair of linear slide mechanisms 27, 27 that are driven by a servo motor 26 to raise and lower each of the lifting members 25. The lifter 23 is configured so that the sheet detection means 22 detects the amount of stacked sheets 10 and changes (varies) the support height of the pallet 24, thereby adjusting the height level (upper position, top surface height) of the uppermost sheet 10 of the stacked sheets 11 to a predetermined position.

[0019] As shown in Figures 1 and 3, a sheet transfer device 28 is provided above a pallet 24 supported by a lifter 23 in the pallet station P. The sheet transfer device 28 includes an adsorption means 19 having two pairs of adsorption bodies 19a, 19b spaced apart in the front-rear direction. The sheet transfer device 28 includes a front-rear movement means 21 that moves the front adsorption body 19a and the rear adsorption body 19b independently in the front-rear direction, and a left-right movement means 20 that moves the front adsorption body 19a and the rear adsorption body 19b together in the left-right direction. The front-rear movement means 21 includes a front-rear slide mechanism 32 that is driven by a servo motor 31 and that moves a holder (movement unit) 30 that includes elevating means 29a, 29b, such as an air cylinder, that elevates and lowers the adsorption means 19. Each of the front-rear slide mechanisms 32 includes the front adsorption body 19a and the rear adsorption body 19b that are arranged on a support member 33 and spaced apart in the left-right direction. The front and rear lifting means 29a, 29b are configured to pick up the sheet 10 by varying the timing at which either the front attraction body 19a or the rear attraction body 19b that has attracted the sheet 10 starts to rise. The front-rear movement means 21, 21 are arranged on a slide member (moving section) 34 at a distance from each other in the front-rear direction, and the front-rear movement means 21, 21 are configured to move integrally in the left-right direction by moving the slide member 34 by the left-right movement means 20. The left-right movement means 20 includes a left-right slide mechanism 36 that supports the slide member 34 so that it can move in the left-right direction and is driven by a servo motor 35.

[0020] 3, positional deviation detection means 16, 17 such as a photoelectric sensor capable of detecting the front edge (front end) or rear edge (rear end) of the uppermost sheet 10 in the laminated sheets 11 are integrally disposed on each of the holders 30 moved by the front-rear movement means 21, 21. In addition, positional deviation detection means 18 such as a photoelectric sensor capable of detecting one side edge in the left-right direction of the uppermost sheet 10 in the laminated sheets 11 (the right edge (right end) in the illustrated example)) is integrally disposed on the slide member 34 moved by the left-right movement means 20. The three positional deviation detection means 16, 17, 18 will be distinguished by referring to the positional deviation detection means disposed on holder 30 of front front-rear movement means 21 as front positional deviation detection means 16, the positional deviation detection means disposed on holder 30 of rear front-rear movement means 21 as rear positional deviation detection means 17, and the positional deviation detection means disposed on slide member 34 of left-right movement means 20 as left-right positional deviation detection means 18. In the take-out supply device, detection signals from the three positional deviation detection means 16, 17, 18 are input to a control unit not shown. The left-right position deviation detection means 18 consists of two sensors 18a, 18a arranged at a distance in the front-to-rear direction from the attachment member 37, which is arranged on the slide member 34 and extends in the front-to-rear direction, and the control unit determines the position of the right edge of the sheet 10 by using the sensors 18a, 18a, which are moved by the left-to-right movement means 20, to detect the right edge of the sheet 10 with one sensor 18a, and then immediately detect the right edge of the sheet 10 with the other sensor 18a, which is spaced apart in the front-to-rear direction.

[0021] 4, a preferred sheet suction position G at which the sheet 10 is suctioned by the suction means 19 is input and set as numerical data relating to the distances from the right edge, front edge, and rear edge of the sheet 10. The sheet suction position G is a position at which the flaps 13a, 14a, 15a, 15b and the panels 13, 14, 15 that do not face the fold line K are suctioned, and is set for each type of sheet 10. Then, in accordance with the position of the right edge of the sheet 10 (sheet position) detected by the left-right position deviation detection means 18, the left-right movement means 20 is controlled to move the suction bodies 19a, 19b by a distance based on the set data, and position the suction bodies 19a, 19b in the left-right direction in accordance with the sheet suction position G. Furthermore, the operation of the front-rear moving means 21, 21 is controlled in accordance with the positions (sheet position) of the front and rear edges of the sheet 10 detected by the front positional deviation detecting means 16 and the rear positional deviation detecting means 17, to move the front and rear attractors 19a, 19b by a distance based on set data and align the front-rear position with the sheet attraction position G. The attraction means 19, which has been aligned in the front-rear and left-right directions, is then lowered, whereby the sheet 10 is attracted to the sheet attraction position G by the attraction means 19. The attraction means 19, whose left-right position is aligned with the sheet attraction position G, is moved by the left-right moving means 20 to a position where the left-right center of the attracted sheet 10 is aligned with the left-right center of the sheet hopper 12. It is more preferable that the attraction means 19 is moved by the front-rear moving means 21, 21 to correct the position of the front-rear center of the sheet 10 to a position where it is aligned with the front-rear center of the sheet hopper 12 before the attraction means 19 transfers the sheet 10 to a predetermined position in the sheet hopper 12.

[0022] When changing the suction position of the sheet 10 to correspond to different sheet sizes or other types during product type setting, the data is input and set as data regarding the distance from the positions of the right edge, front edge, and rear edge of the sheet 10, as determined during product type setting, to the sheet suction position G determined for the sheet 10.

[0023] 1 and 2, a sheet hopper 12 of the box packing machine is disposed adjacent to one side of the lifter 23. The sheet hopper 12 extends upward from a support member 38 that supports the sheets 10 from below, and is formed so as to open upward from front-rear regulating members 39, 39 (only one of which is shown) that are arranged opposite and spaced apart in the front-rear direction, and left-right regulating members 40, 40 that are arranged opposite and spaced apart in the left-right direction. The front-rear and left-right regulating members 39, 39, 40, 40 regulate the positions of corresponding edges of the sheets 10, thereby aligning the front-rear and left-right centers of the sheets 10 with the front-rear and left-right centers of the sheet hopper 12. The front-rear and left-right regulating members 39, 39 and the left-right regulating members 40, 40 are configured so that their positions can be adjusted by corresponding front-rear adjustment means 41 and left-right adjustment means 42 according to the size of the sheets 10.

[0024] 1 and 2, above the sheet hopper 12, there are provided a receiving section 43 that temporarily supports the sheets 10 transferred by the sheet transfer device 28, and an alignment means 44 that positions the front, rear, left, and right side edges of the sheets 10 so that the center of the sheets 10 supported by the receiving section 43 is aligned with the center of the sheet hopper 12. The receiving section 43 has gates 45, 45 consisting of a pair of horizontally movable bars that are spaced apart in the left-right direction, which is the short direction of the sheets 10, to close the path through which the sheets 10 fall to the top of the stack in the sheet hopper 12. The gates 45, 45 are moved by an opening / closing mechanism 47 driven by a servo motor 46 between a support position where they approach each other to support the sheets 10 from below and an open position where they are spaced apart to allow the sheets 10 to fall. The alignment means 44 has front and rear guides (edge ​​alignment guides) 48, 48 that face each other in the front-rear direction, and left and right guides (edge ​​alignment guides) 49a, 49b that face each other in the left-right direction. The front-rear guides 48, 48 facing each other in the front-rear direction are configured to be able to push both front and rear edge portions of the sheet 10 from an outer position of the sheet 10 supported by the gates 45, 45 by a front-rear movement mechanism (drive means) 51 driven by a servo motor 50, thereby aligning the sheet 10 with the front-rear center of the sheet hopper 12. Furthermore, the left-right guides 49a, 49b facing each other in the left-right direction include a pair of guide plates spaced apart in the front-rear direction corresponding to the longitudinal direction of the sheet 10, and each pair of the left-right guides 49a, 49b is moved by a left-right movement mechanism (drive means) 53 driven by a servo motor 52 from an outer position of the sheet 10 supported by the gates 45, 45, thereby pushing both outer edge portions in the short direction of the sheet 10 and aligning the sheet 10 with the center of the sheet hopper 12 in the left-rear direction.

[0025] Next, the operation of the stacked sheet take-out and supply device according to the embodiment will be described. In Fig. 4, a virtual sheet 10a whose center is aligned with the reference placement position X of the pallet 24 is represented by a two-dot chain line, and the sheet adsorption position G defined for the virtual sheet 10a is represented by a white circle. A sheet 10 whose center is not aligned with the reference placement position X of the pallet 24 is represented by a solid line, and the sheet adsorption position G defined for the sheet 10 is represented by a black circle.

[0026] When the top sheet 10 (solid line in Figure 4) is picked up from the stacked sheets 11 placed on the pallet 24, the movement of the left-right moving means 20 moves the left-right position shift detection means 18 from an area outside the right edge of the stacked sheets 11 toward the inside, and the left-right position shift detection means 18 detects the right edge of the sheet 10, so that the suction position of the two suction bodies 19a, 19b in the suction means 19 is positioned at a distance from the right edge of the sheet 10 that is preset as data corresponding to the middle position of the sheet 10 in the left-right direction, and the left-right moving means 20 moves the suction means 19 to a predetermined target position and stops it using the detection position as a base point. Then, after the suction means 19 is moved to the target position by the left-right moving means 20, the front and rear forward / backward moving means 21 move the front position deviation detection means 16 and the rear position deviation detection means 17 from the outer area of ​​the front edge and rear edge of the laminated sheet 11 toward the inside, and when the front edge and rear edge of the sheet 10 are detected by the front position deviation detection means 16 and the rear position deviation detection means 17, the front and rear forward / backward moving means 21 move the suction bodies 19a, 19b to the predetermined target positions using the detected position as the base point so that they are positioned at distances from the front edge and rear edge of the sheet 10 that are preset as data as the distances from the front edge and rear edge of the sheet 10, and stop them. That is, the suction means 19 is moved by the left-right movement means 20 and the front-rear movement means 21 based on the detection signals from the three positional deviation detection means 16, 17, 18, and the attraction members 19a, 19b of the suction means 19 are positioned at the sheet suction position G indicated by a black circle, which is a preset suction position corresponding to the type of the sheet 10. In this way, every time the topmost sheet 10 of the stack of sheets 11 is taken out, the attraction members 19a, 19b of the suction means 19 can be positioned at the preset desired positions for the sheet 10 in response to the positional deviation of each sheet.

[0027] Then, the front and rear attractors 19a, 19b, which are aligned at the sheet attraction position G, are lowered by the lifting means 29a, 29b to attract the sheet 10, and then the front and rear attractors 19a, 19b are operated so that the timing at which they start rising is different, thereby lifting the sheet 10 at an angle in the front-to-rear direction. The attraction means 19 that has picked up the sheet 10 is moved by the left-to-right movement means 20 to above the sheet hopper 12 of the packing machine, which is adjacent to the pallet station P. When the attraction means 19 reaches above the sheet hopper 12, the left-to-right movement means 20 moves and stops the attraction means 19 a distance such that the left-to-right center of the sheet 10 being attracted and transported by the attraction means 19 is aligned with the center of the sheet hopper 12. Thereafter, by releasing the attraction by the attraction means 19, the sheet 10 is delivered to the gates 45, 45 positioned at the support position, with its left-to-right center aligned with the left-to-right center of the sheet hopper 12. Furthermore, when the sheet detection means 22 detects that the stacked height of the stacked sheets 11 has decreased as a sheet 10 is removed from the stacked sheets 11, the pallet 24 is raised and lifted by the lifter 23, and the height level of the stacked sheets 11 placed on the pallet 24 is maintained.

[0028] 2, the front and rear guides 48, 48 and left and right guides 49a, 49b of the alignment means 44 are moved by the corresponding movement mechanisms 51, 53 from retracted positions outside the sheet 10 to a central alignment position, and the front, rear, left, and right edges of the sheet 10 are pressed against the guides 48, 48, 49a, 49b to match the size of the sheet 10, correcting any misalignment of the sheet 10, including any tilt of the sheet 10 in the horizontal plane, and aligning the center of the sheet hopper with the center of the sheet. After the sheet 10 is aligned by the alignment operation of the front, rear, left, and right guides 48, 48, 49a, 49b, the gates 45, 45 are moved away from each other to their open positions, thereby releasing support for the sheet 10, and the sheet 10 falls, guided by the front, rear, and left and right regulating members 39, 39, 40, 40, and is transferred to the top of a predetermined amount of sheets 10 stacked on the support members 38 of the sheet hopper 12. In this way, the sheets 10 are repeatedly supplied to the sheet hopper 12, and even if the number of sheets in the sheet hopper 12 decreases due to use in the boxing machine, the sheets 10 are smoothly replenished one by one in the sheet hopper 12.

[0029] In the take-out / feeding device of the embodiment, when sheets 10 are picked up one by one from the stack of sheets 11, the device detects the positional deviation of each sheet and aligns the suction means 19 to the desired sheet suction position G to absorb the sheet 10, taking into account various conditions, such as differences in the size of the flaps and panels of the sheets 10, the sheet thickness, the positional relationship between the flaps and fold lines, and other differences in box sizes. Therefore, even if the center of a sheet is misaligned with the reference placement position X, the sheet 10 can be picked up properly. In other words, even if some sheets 10 in the stack of sheets 11 stacked on the pallet 24 are misaligned, the device can accommodate the misalignment and successfully remove each sheet 10. The removed sheets can then be successfully delivered one by one to their destination. Furthermore, because the sheet detection means 22 maintains the top position of the stack of sheets 11, the pick-up position of the sheet 10 by the suction means 19 does not change, allowing the suction means 19 to successfully absorb the topmost sheet 10. Furthermore, since the positional deviation detection means 16, 17, and 18 are configured to move integrally with the adsorption means 19, the positional relationship between the adsorption means 19 and the positional deviation detection means 16, 17, and 18 is always constant, and the adsorption means 19 can be accurately positioned at the sheet adsorption position G. Furthermore, since the adsorption bodies 19a and 19b at the front and rear of the adsorption means 19 are configured to move independently by the front-rear movement means 21, even if the distance from the front edge of the front sheet adsorption position G to the distance from the rear edge of the rear sheet adsorption position G are set to different positions due to differences in the front and rear shapes of the sheet 10, the adsorption bodies 19a and 19b can be appropriately positioned at the sheet adsorption position G for the corresponding sheet 10. In addition, the control unit determines that the edge of the sheet 10 has been detected by detecting the right edge of the sheet 10 when the two sensors 18a, 18a, which are spaced apart in the front-to-rear direction, move in one direction of the left-to-right position shift detection means 18.Therefore, it is possible to prevent malfunction when the detection position of one of the sensors 18a is at the position of the slit between the flaps 13a, 14a, 15a of the sheet 10.

[0030] In the take-out supply device of the embodiment, the front and rear attractors 19a, 19b are configured to start rising at different times so as to pick up the sheets 10 at an angle, thereby preventing the uppermost sheet 10 from being lifted up along with the lower sheets due to a vacuum created when separating it from the lower sheets 10, and allowing the sheets to be picked up one by one in an appropriate manner. Also, the sheets 10 picked up by the attractor 19 are temporarily supplied to the receiver 43 provided above the sheet hopper 12, and the center of the sheet 10 on the receiver 43 is aligned with the center of the sheet hopper 12 by the aligning means 44. This makes it possible to correct any misalignment or tilt in the horizontal plane when the sheets are dropped from the attractor 19, and supply the sheets 10 to the sheet hopper 12 in the correct orientation. Because receiving section 43 is composed of gates 45, 45 made up of bars that open and close, there is little contact resistance with sheets 10 when the gates 45, 45 are opened, and tilting of sheets 10 supported on the gates is suppressed when the gates 45, 45 are opened, allowing sheets 10 to be dropped and supplied smoothly into sheet hopper 12. In addition, alignment means 44 aligns the front-rear and left-right positions of sheets 10 by pushing sheets 10 from the outside with front-rear guides 48, 48 and left-right guides 49a, 49b that are moved by movement mechanisms 51, 53, so that sheets 10 can be positioned in the appropriate position in sheet hopper 12 with their posture corrected.

[0031] In the take-out supply device of the embodiment, in the return process in which the sheet 10 picked up by the suction means 19 is transferred to the sheet hopper 12 by the left-right moving means 20, the left-right position deviation detection means 18 detects one end (left edge) of the sheet 10 in the left-right direction, and the position deviation (sheet position) of the sheet 10 can be known, and even when sheets of different sizes are used together, deviation detection can be performed satisfactorily without changing the position of the left-right position deviation detection means 18. Moreover, position deviation detection means 18 for only one of the left and right directions can satisfactorily detect position deviation of the sheet 10 that is symmetrical in the front and rear in the left-right direction.

[0032] (Example of change) The present invention is not limited to the configurations of the examples, and can be modified as follows, for example: Furthermore, the configurations described in the examples are not limited to the following modifications, and various embodiments can be adopted within the scope of the gist of the present invention. (1) The detection points of the misalignment detection means 16, 17, 18 may be the front edge, rear edge, and left edge of the sheet 10. Also, the misalignment detection means 16, 17, 18 may employ image sensors such as cameras instead of the photoelectric sensors used in the embodiments. (2) Instead of the positional deviation detecting means 16, 17, 18 being configured to move integrally with the suction means 19, a configuration can be adopted in which the positional deviation of the sheet 10 is detected by being disposed at a fixed position. (3) The means 20, 21 for moving the suction means 19 back and forth and left and right are not limited to the slide mechanisms 32, 36 driven by the servo motors 31, 35, but may be various other types of moving means, such as linear actuators that can be controlled in position, such as servo cylinders. (4) The receiving portion 43 and the aligning means 44 provided above the sheet hopper 12 of the packing machine may have various configurations, not limited to those described in the embodiment. The receiving portion 43 and the aligning means 44 may be provided as needed. (5) In the embodiment, the two sets of adsorption bodies 19a, 19b are configured to start rising at different times to pick up the sheet 10. However, the configuration of differentiating the timing at which the adsorption bodies 19a, 19b start rising may be adopted as needed. For example, the adsorption bodies 19a, 19b may be rotated to lift up the sheet to pick it up. (6) The number of adsorption bodies 19a, 19b in the adsorption means 19 may be determined according to the shape of the adsorption bodies 19a, 19b, other adsorption conditions, and sheet size, or a suction box may be used. (7) In the embodiment, the laminated sheet 11 is placed on the pallet 24 that is sent to the pallet station P, but the placing table may be another type of placing table, such as a transport cart on which the laminated sheet 11 is placed, instead of the pallet 12. [Explanation of symbols]

[0033] 10 sheet, 11 stacked sheet, 12 sheet hopper 16 Front position deviation detection means (position deviation detection means) 17 Rear position deviation detection means (position deviation detection means) 18 Left-right position deviation detection means (position deviation detection means), 19 Adsorption means 20 Left and right movement means (first movement means), 21 Back and forth movement means (second movement means) 22 sheet detection means, 23 lifter, 24 pallet (mounting table) 29a, 29b lifting means, 30 holder (moving part), 34 slide member (moving part) 43 receiving portion, 44 alignment means, 45 gate, 48 front and rear guide (edge ​​alignment guide) 49a, 49b left and right guides (edge ​​alignment guides), 51 front and rear movement mechanism (driving means) 53 Left and right movement mechanism (drive means), G sheet suction position

Claims

1. A stacked sheet take-out and supply device that picks up the topmost sheet of a stacked sheet placed on a loading table one by one by a suction means and supplies the sheet to a sheet hopper of an adjacent boxing machine, a positional deviation detection means for detecting a positional deviation of the uppermost sheet in a horizontal plane; a first moving means for moving the suction means that has picked up the sheet back and forth in a first direction in which the suction means moves laterally toward the sheet hopper, and a second moving means for moving the suction means back and forth in a second direction that intersects with the first direction; a sheet detecting means for detecting the stacking amount of the laminated sheets; a lifter that changes the support height of the table so as to adjust the height of the top surface of the stacked sheets to a predetermined height based on the amount of stacked sheets detected by the sheet detection means, Each time the uppermost sheet is picked up, the first moving means and the second moving means move the suction means to a sheet suction position determined for each type of sheet in accordance with the sheet position detected by the positional deviation detecting means, and the sheet is sucked and picked up, and then the sheet is transported to a predetermined position above the sheet hopper.

1. A laminated sheet take-out and supply device comprising:

2. 2. The laminated sheet take-out and supply device according to claim 1, characterized in that the positional deviation detection means for detecting either the front or rear end of the sheet in the first direction is provided in the moving section that moves together with the suction means by the first moving means.

3. The laminated sheet take-out and supply device described in claim 1, characterized in that the suction means has suction bodies spaced apart at the front and back of the second direction, and the second moving means is capable of moving the suction bodies independently back and forth, and the positional deviation detection means for detecting the front and rear ends of the sheets, which are front and rear in the second direction, is provided in a moving section moved by the second moving means together with each suction body.

4. 4. The laminated sheet take-out and supply device according to claim 3, further comprising a lifting means for independently lifting and lowering the adsorption bodies spaced apart in the second direction, and wherein the lifting means starts lifting the adsorption bodies at different times to pick up the sheets.

5. A laminated sheet take-out and supply device as described in any one of claims 1 to 4, characterized in that above the sheet hopper there is provided a receiving section capable of supporting the sheet dropped and supplied from the suction means, and an alignment means for positioning the front and rear side edges of the sheet supported by the receiving section in the first and second directions.

6. 6. The stacked sheet take-out and supply device according to claim 5, wherein the receiving portion is configured by a gate capable of closing a passageway for dropping the stacked sheets to the upper portion of the sheet hopper.

7. 6. The laminated sheet take-out and supply device according to claim 5, wherein the aligning means comprises edge alignment guides that press the outsides of the front and rear side edges of the sheets in the first and second directions, and drive means that actuates the edge alignment guides.

Images