JP4058962B2 - Method and apparatus for bending edge of separate sheet - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a method and an apparatus for bending an edge portion of a separate sheet used for pallet packaging.
[0002]
[Prior art]
Containers such as cans and plastic bottles are stacked on a pallet via separate sheets, which are cardboard partition plates, and the top frame is placed on the top and banded, and the whole is shrink-wrapped to form a pallet package. Configured and shipped. In order to prevent the container located at the edge of each step from falling, a ruled line is put on the edge of the separate sheet and bent upward to form a locking part, and this locking part forms the edge of the container. The thing which suppressed and prevented falling is known.
[0003]
【Task】
This separate sheet is obtained by folding and storing the finished flat edges of the flat plate material, picking up one sheet each time it is used, and supplying it on the pallet stage or flat plate shape The material is stacked and stored, and the method of bending the material immediately before it is supplied to the pallet stage is adopted. However, the method of storing the completed separate sheet in advance makes the storage bulky. In addition, there is a problem that the bent portion is deformed during storage. Also, the method of bending the latter just before being supplied onto the pallet stage requires that the plate-like separate sheet material be transferred to the processing port, which increases the transfer distance of the separate sheet and increases the efficiency of packaging. It becomes an obstacle when working.
[0004]
For this reason, it is desired to develop a separation sheet processing technique that can bend the edge portion of the separate sheet correctly and improve the efficiency of the packing operation.
[0005]
The present invention has been made in view of the circumstances as described above, and the storage of the separate sheet is not bulky, the bent state of the edge portion is correctly maintained, and the separation sheet is transported by reducing the transfer distance. It is an object of the present invention to provide a separate sheet processing technique capable of improving the efficiency of the sheet.
[0007]
[Solution]
Corresponding to this object, the method of bending the edge portion of the separate sheet according to the present invention includes a step of picking up and holding a rectangular separate sheet, and an upper and lower side where the edge portion of the picked up separate sheet is linearly displaced relative to the separate sheet A step of forming the bent portion of the separate sheet including the step of forming the bent portion along the edge portion by passing it while sandwiching between the pair of bending forming rolls. A first bent portion forming step of forming a bent portion along one edge portion of at least one pair of adjacent two edge portions of the shape separate sheet, and a first forming of the bent portion along the other edge portion. It is characterized by comprising two folding forming steps.
[0008]
Further, the bending apparatus for the edge portion of the separate sheet of the present invention includes a means for picking up and holding a rectangular separate sheet, a means for transferring the picked-up separate sheet, and an edge portion of the picked-up separate sheet as the separate sheet. A separate edge bending apparatus for a separate sheet, comprising a bending portion forming means for forming a bent portion along the edge portion while passing between the pair of bending forming rolls that are vertically displaced relative to each other. The bending forming roll of the bending forming means for forming the bending portion includes a first bending portion that forms a bending portion along one edge portion of at least one pair of adjacent two edge portions of the rectangular separate sheet. Forming means and a second bent portion forming a bent portion along the other side It is characterized by comprising a means.
[0010]
Embodiment
The details of the present invention will be described below with reference to the drawings showing an embodiment.
First, the pallet package of this invention is demonstrated. As shown in FIG. 1, the pallet package 101 has a plurality of stacked packages 103 such as empty cans stacked on a pallet 102, and a separate sheet 1 is placed in a partition between upper and lower adjacent stages. The plate-shaped top frame 104 is placed on the uppermost package body, and the package body 103 is placed between the pallet 102 and the top frame 104. In a state of being sandwiched, the band 105 is bundled, and the whole is shrink-wrapped with a film 106 to complete.
[0011]
As shown in FIGS. 2, 3, and 4, the separate sheet 1 has a rectangular shape that can cover each step and is made of cardboard. The separate sheet 1 has a central portion 2 and surrounding four edge portions 3 (upper edge portion 3a, right edge portion 3b, lower edge portion 3c, and left edge portion 3d). At least a pair of adjacent edge portions 3a and 3b, edge portions 3b and 3c, edge portions 3c and 3d, edge portions 3d and 3a, or all edge portions 3a, 3b, 3c and 3d have bent portions 4. Is formed.
[0012]
Triangular corner cuts 9 are formed at the four corners of the separate sheet 1 so as to cover the edge 3 adjacent in the vertical direction.
[0013]
The bent portion 4 is formed by bending the base material of the separate sheet 1, and is formed in a straight line along the edge portion 3 of the separate sheet 1.
[0014]
As shown in FIG. 4, the bent portion 4 is in contact with the upper edge portion 5 and the lower edge portion 6 of the packaged body 103 and restrains the packaged body 103 in the periphery of each stage. May be provided on all the edge portions 3, but among the combinations of two edge portions of at least four edge portions 3, edge portions 3a and 3b, 3c and 3d, or 3a and 3b, 3b and 3c Thus, it is necessary to provide a set of two edge portions positioned adjacent to each other in the orthogonal direction on one edge portion of the two pairs facing the diagonal direction of the separate sheet 1. In the embodiment shown in FIGS. 2 and 3, the bent portions 4 are provided on all the edge portions 3. In the case where the bent portions are provided only at two edge portions adjacent to each other in the orthogonal direction, it is necessary to use the pallet package 101 with the phase shifted by 180 ° for each step.
[0015]
It is advantageous for the separate sheet 1 to have both a function of restraining the lower package body 103 and a function of restraining the upper package body. Therefore, the folding sheet 4 formed on the separate sheet 1 is a separate sheet. A lower projecting portion 7 projecting downward from the surface of the first base material and contacting the lower packaged body, and an upper projecting projecting upward from the surface of the base material of the separate sheet 1 and contacting the upper package body It is desirable to have both parts with part 8. Either the lower projecting portion 7 or the upper projecting portion 8 may be on the inner side (closer to the center portion 2) or the outer projecting portion 8 may be on the outer side, but in this embodiment, the cross-sectional shape in a virtual plane perpendicular to the edge portion 3 As shown in FIG. 4, it comprises a lower projecting portion 7 bent downward near the center portion 2 and an upper projecting portion 8 inclined outward and bent outwardly. However, the lower projecting portion 7 and the upper projecting portion 8 may be provided adjacent to each other, or a connecting portion having an appropriate cross-sectional shape may be provided between them. In addition, it is good to provide the bending part which consists of both upper and lower protrusion parts in at least 2 edge part of a rectangular-shaped separate sheet | seat. In this case, it is preferable to provide an upward or downward bent portion on the remaining edge portion, but the bent portion may not be provided.
[0016]
Next, a method of bending the edge portion of the separate sheet configured as described above and an apparatus used in carrying out the method will be described.
[0017]
5 to 10, reference numeral 11 denotes a bending apparatus. As shown in FIG. 5, the bending device 11 includes a palletizing device 107 that stacks the packages to be packed to form the pallet package 101 and a separate sheet stocker 108 that stores a separate sheet base material supplied to the palletizing device 107. It is installed between. The bending device 11 includes a vertical direction forming device 12 and a horizontal direction forming device 13. The vertical forming device 12 is a device for forming the folding portion 4 in the vertical direction on the separator sheet 1, and a pair of bending forming roll assemblies 15 described later is disposed between the palletizing device 107 and the separate sheet stocker 108. ing. On the other hand, the horizontal direction forming device 13 is a device for forming the bent portion 4 in the transverse direction perpendicular to the vertical direction on the separate sheet 1, and a pair of bending forming roll assemblies 17 to be described later is located above the palletizing device 107. Is arranged.
[0018]
As shown in FIGS. 6 and 7, the vertical direction forming apparatus 12 includes a pair of folding forming roll assemblies 15 facing each other at a distance of W1 on a base frame 21, and each bending forming roll assembly 15 is linear. An upper and lower roll support device having a moving body 24 movable on a guide rail 23 by a motor, a support column 25 erected on the moving table 24, and vertically positioned along the guide groove 26 on the support column 25. 27 and 28 are fitted, and from the upper roll support device 27, a shaft 29 extends and an upper forming roll 31 is rotatably supported. Further, from the lower roll support device 28, the shaft 30 extends and the lower forming roll 32 is rotatably supported. The upper and lower molding rolls 31 and 32 are arranged in the same vertical plane, the upper molding roll 31 has a convex molding portion 33 on its circumferential surface, and the lower molding roll 32 has its circumference. It has a concave shaped part 34 on the surface, and the concave and convex shaped parts 33 and 34 can be bent to form the bent part 4 by bending the edge part 3 of the separate sheet 1 sandwiched between the gaps therebetween. It is. The shape of the uneven portions 33 and 34 is selected in accordance with the cross-sectional shape of the bent portion 4 of the separate sheet 1 to be processed.
[0019]
Since the position of the edge portion 3 is different depending on the size of the separate sheet 1 to be processed, the position of the folding forming roll assembly 15 is adjusted by moving the moving table 24 along the guide rail 23 within the range of W2.
[0020]
The longitudinal direction molding device 12 configured in this way is in the middle of the base material of the separate sheet 1 being sent from the separate sheet stocker 108 to the palletizing device 107, and the edge 3 is between the upper and lower molding rolls 31, 32. By passing, the bent portions 4 are formed by being processed by the upper and lower forming rolls 31 and 32. In this embodiment, since the two vertical molding devices 12 are arranged facing each other, the parallel edge portions 3 of the separate sheet 1 are bent. Of the parallel edge portions 3, In the case of processing only one of them, only one of the left and right bending forming roll assemblies 15 and 16 of the vertical direction forming device 12 may be provided. In this embodiment, the folding forming roll assemblies 15 and 16 of the longitudinal forming device 12 are in a fixed position and the separate sheet 1 to be processed moves linearly, but the folding of the separate sheet 1 and the longitudinal forming device 12 is performed. Since the forming roll assemblies 15 and 16 need only be moved relatively linearly, the folding forming roll assemblies 15 and 16 of the longitudinal forming apparatus 12 are configured to linearly move with respect to the stopped separate sheet 1. Also good.
[0021]
Next, as shown in FIGS. 8, 9, and 10, the lateral direction forming device 13 includes a pair of folding forming roll assemblies 42 a and 42 b facing the base frame 41. However, the bending roll assembly 42a and the folding roll assembly 42b are upside down. Each of the bending roll assemblies 42a and 42b is moved by a linear motor along the guide rail 43, and the upper and lower forming roll support devices 45 and 46 supported by the movable carriage 44 and positioned in the vertical direction. The shaft 47 extends from the upper forming roll support device 45, and the upper forming roll 48 is rotatably supported. A shaft 51 extends from the lower forming roll support device 46, and the lower forming roll 52 is rotatably supported.
[0022]
The upper and lower molding rolls 48 and 52 are disposed in the same vertical plane, the upper molding roll 48 has a convex molding portion 53 on its circumferential surface, and the lower molding roll 52 has its circumferential surface. A concave molding portion 54 is provided on the top. In any folding forming roll assembly 42a, 42b, the upper and lower forming rolls 48, 52 are arranged in the vertical direction with the upper forming roll 48 on the upper side and the lower forming roll 52 on the lower side. The pedestal 44 is on the top for the folding roll assembly 42a and on the bottom for the folding roll assembly 42b. The convex and concave molding portions 53 and 54 can cooperate to bend the edge portion 3 of the separate sheet 1 sandwiched between the gaps therebetween.
[0023]
The shapes of the forming portions 53 and 54 are selected corresponding to the cross-sectional shape of the bent portion 4 of the separate sheet 1 to be processed. Further, since the position of the edge portion 3 varies depending on the size of the separate sheet 1 to be processed, the separate sheet 1 is positioned by a stopper (not shown) and the folding roll with respect to the base frame 41 using the long hole 55 is used. The position of the upper and lower forming rolls 48 and 52 is adjusted by adjusting the position of the aggregate 42a. The height of the bending roll assembly 42b with respect to the bending roll assembly 42a is adjusted using the long hole 56.
[0024]
The transverse molding device 13 configured as described above is performed above the palletizing device 107 when the base material of the separate sheet 1 is fed from the longitudinal molding device 12 and reaches the palletizing device 107. In addition to being picked up and gripped by the pickup 57, the separate sheet 1 is sucked and held by the fixing suction device 58 and fixed in a stationary state, and the movable table 44 of the bending forming roll assembly 42a and the bending forming roll assembly 42b. The movable table 44 is linearly moved along the edge 3 of the separate sheet 1 from the opposite direction, and is bent while the edge 3 of the separate sheet 1 is sandwiched between the upper and lower forming rolls 48 and 52 to form the bent portion 4. To do. When the bending is completed, the pickup 57 and the fixing suction device 58 are deenergized to release the separate sheet 1, and the separate sheet 1 is dropped and placed on the stage of the package body 103 of the pallet package body 101. . In this embodiment, since the pair of folding forming roll assemblies 42a and 42b are arranged facing each other in the lateral direction forming apparatus 13, the parallel front and rear edges of the separate sheet 1 are bent, but in parallel. When only one of the two edge portions is processed, only one of the bending roll assemblies 42a and 42b may be provided. In this embodiment, the folding and forming roll assemblies 42a and 42b move and the separation sheet 1 to be processed is in a fixed position. However, the separating sheet 1 and the bending and forming roll assemblies 42a and 42b are moved relative to each other by a straight line. Therefore, the folding forming roll assemblies 42a and 42b of the lateral forming apparatus 13 located at a fixed position with respect to the moving separate sheet 1 may be processed.
[0025]
The method for bending the edge portion of the separate sheet of the present invention using the bending device 11 configured as described above is performed as follows.
[0026]
The base material of the separate sheet 1 is stacked in a separate sheet stocker 108, and the base material of the uppermost separate sheet 1 is picked up and picked up by the pickup 57, and is directly transferred to a transfer device such as a chain (not shown). ) In the transfer path 61 (see FIG. 5) toward the palletizing device 107. On the way, the vertical molding device 12 is passed, and the bent portions 4 are formed on the left and right edge portions 3 which are parallel by the upper and lower molding rolls 31 and 32. The separation sheet 1 that has passed through the vertical molding device 12 reaches the palletizing device 107, is stopped and positioned by a stopper (not shown), and is then suction-fixed by the fixing suction device 58 in addition to the pickup 57, and is stationary. The upper and lower forming rolls 48 and 52 of the lateral direction forming device 13 are advanced with respect to the separate sheet 1 in this state, and the bent portions 4 are formed on the parallel front and rear edge portions 3 of the separate sheet 1. Thereafter, the pickup 57 and the fixing suction device 58 are deenergized to open the separate sheet 1, and the separate sheet 1 is dropped and placed on the stage of the package body 103 of the pallet package body 101.
[0027]
【The invention's effect】
In this invention, each time the separate sheet 1 is supplied to the separate sheet stocker 108, the bent portion 4 is formed in the separate sheet. Therefore, a place for storing a large number of completed separate sheets 1 is not necessary, and molding is performed during storage. Since the bent portion 4 is not deformed, a smooth palletizing operation is realized. Originally, the separate sheet 1 must always be transferred from the separate sheet stocker 108 to the palletizing device 107. In this invention, the movement of the separate sheet 1 is used as a material feed in the folding device 11, so that the separation sheet 1 No additional movement is required for movement. As is apparent from the above description, according to the present invention, the storage of the separate sheet is not bulky, the bent state of the edge portion is correctly maintained, and the separation distance of the separate sheet is reduced to improve the efficiency of the packing work. The processing technology of the separate sheet which can be made can be obtained.
[0028]
[Brief description of the drawings]
FIG. 1 is a front view of a pallet packing body. FIG. 2 is a plan view of a separate sheet. FIG. 3 is a cross-sectional view of a separate sheet. FIG. 4 is a partially enlarged view of a section of a separate sheet. FIG. 6 is an explanatory view showing the arrangement of the bending apparatus. FIG. 6 is a side explanatory view of the vertical forming apparatus. FIG. 7 is a front explanatory view of the vertical forming apparatus. Side view of the folding roll assembly [FIG. 10] Front enlarged explanatory view of the folding roll assembly [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Separate sheet 2 Center part 3 Edge part 4 Bending part 5 Upper edge part 6 Lower edge part 7 Lower protrusion part 8 Upper protrusion part 9 Corner cutting 11 Bending apparatus 12 Longitudinal forming apparatus 13 Lateral forming apparatus 15 Bending forming roll assembly 17 Folding roll assembly 21 Base frame 23 Guide rail 24 Moving body 25 Support column 26 Guide groove 27 Upper roll support device 28 Lower roll support device 29 Shaft 30 Shaft 31 Upper molding roll 32 Lower molding roll 33 Convex molding section 34 Recessed forming portion 41 Base frames 42a, 42b Bending forming roll assembly 43 Guide rail 44 Moving base 45 Upper forming roll support device 46 Lower forming roll support device 47 Shaft 48 Upper forming roll 51 Shaft 52 Lower forming roll 53 Convex shape Molding part 54 Recessed molding part 55 Slot 56 Slot 56 Pickup 58 Fixing suction device 6 DESCRIPTION OF SYMBOLS 1 Transfer path 101 Pallet package 102 Pallet 103 Package body 104 Top frame 105 Band 106 Film 107 Palletizing device 108 Separate stocker

Claims (8)

A process of picking up and holding a rectangular separate sheet, and passing the edge portion of the picked-up separate sheet while sandwiching it between a pair of folding forming rolls that are linearly displaced up and down relative to the separate sheet, to the edge portion In the method for bending the edge portion of the separate sheet, including a step of forming a bent portion along the
The step of forming the bent portion includes a first bent portion forming step of forming a bent portion along one edge portion of at least one set of two adjacent edge portions of the rectangular separate sheet, and the other A method for bending a side edge of a separate sheet, comprising: a second bent portion forming step of forming a bent portion along the edge.   2. The method for bending an edge portion of a separate sheet according to claim 1, wherein the first and / or second bent portion forming step is performed during transfer of the separate sheet.   The said 1st and / or 2nd bending part formation process is performed by fixing a separate sheet | seat and moving a pair of said bending forming roll along the edge part of a separate sheet | seat. Method for bending edge of separate sheet according to claim   4. The method for bending an edge portion of a separate sheet according to claim 1, wherein the step of bending the edge portion of the separate sheet is performed immediately before the separation sheet is placed on a pallet.   A means for picking up and holding a rectangular separate sheet, a means for transferring the picked-up separate sheet, and an edge of the picked-up separate sheet are sandwiched between a pair of folding forming rolls that are linearly displaced relative to the separate sheet. A folding portion forming means for forming a bent portion along the edge portion, and a folding portion forming means for forming the bent portion. A first bent portion forming means for forming a bent portion along one edge portion of at least one pair of adjacent two edge portions of the rectangular separate sheet; and a bent portion along the other edge portion. The edge of the separate sheet comprising the second bent portion forming means to be formed Folding molding apparatus.   The first and / or second bent portion forming means passes the edge portion of the separating sheet being transferred while being sandwiched between the pair of bending forming rolls to form the bent portion along the edge portion. 6. The apparatus for bending an edge portion of a separate sheet according to claim 5, wherein the apparatus is a folding forming roll.   The first and / or second bent portion forming means passes the edge portion of the separated sheet picked up and held stationary while being sandwiched between the pair of rolls to form the bent portion along the edge portion. 6. The apparatus for bending an edge portion of a separate sheet according to claim 5, further comprising: a folding forming roll to be moved; and means for moving the bending forming roll along the edge portion of the separate sheet.     One of the first and second folding portion forming means has a folding forming roll installed in a fixed position in the middle of the separation sheet transfer path, and the other is a folding forming roll that moves along the edge of the separating sheet. 6. The apparatus for bending an edge portion of a separate sheet according to claim 5, further comprising means for moving the bending forming roll along the edge portion of the separate sheet.

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