JP4433349B2 - Band binding method and apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a band bundling device for bundling a small sheet-like workpiece with a bundling band.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a technique is known in which a plurality of sheet-like works such as banknotes, various cards, envelopes, and the like are overlapped and bundled with a binding band. As a conventional method, a method in which a heat-welding binding band is wound around a work and then an end portion of the binding band is heat-welded (for example, Japanese Patent Laid-Open Nos. 6-329109 and JP-A-Hei). No. 10-53210 and JP-A-11-292011).
[0003]
[Problems to be solved by the invention]
However, in the case of heat welding, it is necessary to press the heater against the welding portion of the binding band, but in the conventional method, the heat of the heater is directly transmitted to the workpiece. This causes a problem that in the case of a workpiece that is easily deformed by heat, or in the case of a workpiece that is easily deteriorated by heat, the workpiece is deformed or damaged by band bundling operation, or is deteriorated and becomes unusable.
Therefore, an object of the present invention is to provide a band binding method and a band binding device in which heat at the time of heat welding is not transmitted to the workpiece and the workpiece is not deformed or altered.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, a band bundling method according to the present invention is a method of bundling a plurality of stacked sheet-like works with a heat-welding band, and supplying the work onto a work holding plate. Holding the band between the workpiece and the band / work holding table, and supplying the band between the workpiece and the band / work holding table below the workpiece and the band / work holding table. A step of raising the lower folding member along both side edge portions of the workpiece to bend the band substantially vertically along both side edge portions of the workpiece; and a step of folding the upper folding member in both sides of the workpiece. It is characterized by comprising a step of bending the vertical portion of the band inward and overlapping the end portion on the work pressing plate and a step of thermally welding the overlapped portion. .
[0005]
In this case, when the lower folding member is raised along the both side edge portions of the workpiece, the end portion of the workpiece can be lifted and bent to the extent that it returns to the original flat state after the band binding is completed. .
[0006]
The band bundling device according to the present invention is a band bundling device for bundling a plurality of stacked sheet-like works with a heat-welding band, and is a work presser attached to the outer peripheral edge of a rotatable index table. A work holding plate that is arranged so as to be movable up and down below the attachment end of the work pressing plate, and clamps one end of the work between the work holding plate and the tip side of the work pressing plate A band work that is arranged below the side so as to be movable up and down and clamps the other end of the work and the band supplied between the other end of the work and the work holding plate. The band is raised substantially along the side edge portions of the workpiece by raising it along the both side edge portions of the workpiece sandwiched between the holding table, the workpiece pressing plate and the band workpiece holding table. The side plate to be bent Bend the folded part, the vertical part of the band inward, the upper folding member that overlaps the end part on the work pressing plate, and press the overlapped part of the band And a heat sealing jig for heat welding.
[0007]
In this case, it is possible to employ a configuration in which a band chuck is provided that presses the band end portion superimposed on the workpiece pressing plate onto the workpiece pressing plate.
Moreover, it can be set as the structure which provided the step part which lifts the both-sides edge part of the said workpiece | work inside the side plate of the said downward folding member.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the band bundling method and apparatus according to the present invention will be described in detail with reference to the accompanying drawings.
1 and 2 are process diagrams showing an embodiment of a band binding method according to the present invention, FIG. 3 is a schematic plan view showing an embodiment of a band binding apparatus according to the present invention, and FIG. Fig. 5 is a cross-sectional view taken along line III-III, Fig. 5 is a plan view seen from the direction V in Fig. 4, and Fig. 6 is a perspective view of a workpiece clamping portion.
[0009]
As shown in FIGS. 3 and 4, a disk-shaped index table 1 is provided on the machine body 2 so as to be rotatable about a shaft 3.
In FIG. 4, the index table 1 is fixed to a disk 5 rotatably attached to a shaft 3 on the machine body 2, and intermittently rotates about the shaft 3. The base of the work pressing plate 10 is fixed to the outer periphery of the index table 1. The work pressing plate 10 has a strip shape in which the base side is a thick portion 10a and the tip side is a thin portion 10b.
A workpiece holding plate 11 is provided below the workpiece pressing plate 10. The work holding plate 11 is fixed to a slider 13 slidably mounted on a vertical shaft 12 that penetrates the index table 1. The slider 13 is urged upward by a spring 14 provided at a lower portion thereof. The workpiece holding plate 11 is located on the attachment side of the workpiece pressing plate 10, that is, below the end on the index table 1 side.
[0010]
The slider 13 is provided with a cam follower 13 a that protrudes above the index table 1, and a disk cam 17 that rotates about a shaft 18 is in contact with the cam follower 13 a. The cam follower 13a is pushed by the rotation of the disk cam 17 so that the slider 13 moves up and down, and the work holding plate 11 moves up and down accordingly. Work guide members 16 having a tapered surface 15 at the tip are provided on both sides of the work holding plate 11 (see FIG. 5).
As shown in FIGS. 4 and 6, a pair of band chucks 20 are provided above the work pressing plate 10. The band chuck 20 is rotatably supported by a frame 21 (see FIG. 4) attached to the index table 1 via a shaft 22 and is mounted on the work holding plate 10 by a spring 23 provided on the shaft 22. The lower edge 24 is biased so as to be pressed. A band chuck opening / closing mechanism 9 for separating the band chuck 20 from the work pressing plate 10 is provided on the upper rear side of the band chuck 20.
[0011]
The band chuck opening / closing mechanism 9 is attached to the upper portion of the shaft 12 via a slider 26, rotates around the shaft 18 with an opening / closing member 28 that contacts the roller 27 of the band chuck 20, and contacts the opening / closing member 28. And a disc cam 29 that moves up and down and a spring 30 that biases the slider 26 upward. The opening / closing member 28 is pushed by the rotation of the disk cam 29 and the slider 13 moves downward against the spring 30. As a result, the band chuck 20 rotates counterclockwise about the shaft 22 and is shown in FIG. Is opened to the position indicated by. When the slider 26 is raised by the rotation of the disk cam 29, the pressing of the opening / closing member 28 against the roller 27 is released, so that the spring 23 returns to the position indicated by the solid line in FIG.
[0012]
Next, the workpiece supply operation in the workpiece supply stage (A) shown in FIG. 3 will be described based on the above configuration.
The work holding plate 11 is pushed downward by the disk cam 17 against the spring 14 and is pushed down slightly from the standard position shown in FIG. The workpiece 4 is guided by the taper surface 15 of the workpiece guide member 16 and supplied between the workpiece holding plate 11 and the workpiece holding plate 10, and the tip is positioned in contact with the outer periphery of the index table 1. It is placed on the work holding plate 11. Next, the disk cam 17 rotates to release the pressing to the cam follower 13a, whereby the work holding plate 11 is raised, and the work holding plate 10 and the work holding plate 11 are connected to one end of the work 4 (index table). 1 side). FIG. 1A shows a state in which the workpiece 4 is clamped by the above workpiece supply operation. FIG. 1 shows a case where the workpiece 4 is a tablet package.
[0013]
As shown in FIG. 3, the band bundling stage (B) is a position where the index table 1 is rotated 90 degrees around the axis 3 from the workpiece supply stage (A).
FIG. 7 is a cross-sectional view of the main part of the band binding stage, and FIG. 8 is a perspective view of the main part of the band binding stage.
As shown in FIGS. 7 and 8, the band bundling stage (B) is provided with a band work holding base 40, a lower folding member 33, and an upper folding member 50.
The band / work holder 40 is attached to the upper ends of the two shafts 31, and the lower ends of the shafts 31 are fixed to the mounting plate 32. A downward folding member 33 is slidably attached to the shaft 31. The lower folding member 33 has a channel shape having side plates 35 on both sides. A step portion 34 is formed inside the side plate 35. A spring 39 is mounted between the band / work holding base 40 and the downward folding member 33, and both are biased in directions away from each other.
[0014]
The lower folding member 33 is attached to a slider 37 that extends downward. The slider 37 is connected to driving means (not shown) via a link 36, and moves up and down. As the slider 37 rises, the band / work holding base 40 also rises at the same time and comes into contact with the work 4. The band 44 and the work 4 are held between the work holding plate 10 and the band / work holding base 40 at this position. Stops moving.
Upper folding members 50 are provided on both sides of the lower folding member 33. The upper folding member 50 has a tapered surface 53 formed at the tip of a horizontal plate 52 rising from the base 51 and a stepped portion 54 formed on the lower surface. The base 51 is fixed to a slider 56 slidable on a guide 55. Has been. A link 58 is attached to the base 51 via a shaft 57, and a swing arm 59 is connected to the link 58. The swing arm 59 is supported by the shaft 61 and is urged toward the workpiece 4 by the spring 60. A roller 62 that comes into contact with a cam (not shown) is provided at the lower end of the swing arm 59. The roller 62 swings about the shaft 61 by the rotation of the cam, and reciprocates the upper folding member 50 via the link 58.
[0015]
Next, the operation in the band binding stage (B) will be described. In a state where the workpiece holding plate 10 and the workpiece holding plate 11 hold the workpiece 4 in the workpiece supply stage (A), the index table 1 rotates 90 degrees and proceeds to the band binding stage (B). It is transferred to above the band work holder 40 on the stage (B). The workpiece 4 at this time is in a state of being sandwiched between the workpiece pressing plate 10 and the workpiece holding plate 11. As shown in FIG. 8, the band / work holding base 40 is positioned below the work pressing plate 10, but is positioned closer to the tip of the work pressing plate 10 than the work holding plate 11.
[0016]
When the work 4 is transferred, the band / work holding base 40 and the lower folding member 33 are disposed below the work 4 and the work holding plate 11 (see FIGS. 7 and 8). At this time, a band 44 for binding the workpieces 4 is supplied from a band supply reel (not shown) onto the band / work holding table 40, cut to a predetermined length, and placed on the band / work holding table 40. It is in a placed state. When the workpiece 4 is disposed above the band / work holding table 40, the lower folding member 33 starts to rise by the drive of the slider 37, and the band folding work 33 is powered from the lower folding member 33 via the spring 30. The band work holder 40 starts to rise at the same time.
When the band / work holding base 40 comes into contact with the work 4 together with the band 44, the movement of the band / work holding base 40 stops, so that the work 4 and the band 44 are moved between the work pressing plate 10 and the band / work holding base 40. (See FIG. 1, B-1). Although the movement of the band / work holding base 40 stops, the driving force is still applied to the lower folding member 33, so that the spring 30 is further raised while compressing, and the side plates 35 of the lower folding member 33 are edge portions on both sides of the workpiece 4. Move along. As a result, the binding band 44 is bent substantially vertically along both side edges of the workpiece 4. At this time, the stepped portion 34 of the side plate 35 hits both side edge portions of the workpiece 4, and both side edge portions are lifted slightly upward (see FIG. 1, B-2).
[0017]
Next, the upper folding member 50 is moved from both sides by driving the arm 59. Then, the vertical portion of the binding band 44 is bent inward while being pressed by the tapered surface 53 of the horizontal plate 52, and the end portions are overlapped on the work pressing plate 10. In this way, when the binding band 44 has been circulated around the work 4, the band chuck 20 is rotated from the position of the chain line in FIG. 4 to the position of the solid line, and the overlapping portion 44 a of the binding band 44 is pressed against the work. It presses on the board 10 (refer FIG. 1, B-3).
[0018]
Next, as shown in FIG. 3, the index table 1 is further rotated 90 degrees while being sandwiched between the band / work holding base 40, the work pressing plate 10 and the band chuck 20. Move. As shown in FIG. 2, C-1, in this band welding stage (C), the heat seal jig 46 is lowered from above in a state where the work 4 is held between the band work holding base 40 and the work holding plate 10. Then, the overlapping binding band 44 is heat-welded. Since the work pressing plate 10 is interposed between the heat sealing jig 46 and the work 4, the heat from the heat sealing jig 46 is not transmitted to the work 4.
[0019]
When the heat welding is completed, the heat sealing jig 46, the band / work holder 40 and the work pressing plate 10 are detached from the work 4. As a result, the state in which the end portion of the workpiece 4 is bent and lifted returns to the original flat state. Then, the space of the part in which the work pressing plate 10 is stored disappears, and a band-bound product M in which the work 4 is bound without loosening can be obtained (see FIG. 2, C-2).
The band binding to the work 4 is performed as described above, and the completed band binding product M is discharged in the direction of arrow 65 in FIG.
[0020]
【The invention's effect】
As described above, according to the band binding method and apparatus according to the present invention, when a plurality of stacked sheet-like workpieces are bound with a heat-welding band, the bands are superimposed on the workpiece pressing plate. The heat generated during heat welding is not transmitted to the workpiece, and even if the workpiece is subject to thermal deformation or thermal alteration, the workpiece can be deformed, damaged or altered by the band binding operation. Therefore, a highly reliable band-bundled product can be obtained.
[0021]
Further, according to the band binding device of the present invention, the work holding plate is attached to the index table, and the work holding plate, the band / work holding base, and the lower folding member are provided below the work holding plate. Bundling and heat welding can be arranged compactly around the index table, and the work supply stage, band bundling stage and band welding stage can be performed in parallel at different positions, making efficient band bundling possible. A device is obtained.
[Brief description of the drawings]
FIG. 1 is a process diagram (part 1) showing an embodiment of a band binding method according to the present invention, wherein a left side is a front view and a right side is a side view.
FIG. 2 is a process diagram (part 2) illustrating an embodiment of a band binding method according to the present invention.
FIG. 3 is a schematic plan view showing an embodiment of a band binding device according to the present invention.
4 is a cross-sectional view taken along line III-III in FIG.
FIG. 5 is a plan view seen from the direction V in FIG. 4;
FIG. 6 is a perspective view of a main part in a workpiece supply stage.
FIG. 7 is a cross-sectional view of a main part in a band binding stage.
FIG. 8 is a perspective view of a main part of a band binding stage.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Index table 2 Machine body 3 Axis 4 Work 5 Disk 9 Band chuck opening / closing mechanism 10 Work holding plate 10a Thick part 10b Thin part 11 Work holding plate 12 Shaft 13 Slider 13a Cam follower 14 Spring 15 Tapered surface 16 Work guide member 17 Disc Cam 18 Shaft 20 Band chuck 21 Frame 22 Shaft 23 Spring 24 Lower edge 26 Slider 27 Roller 28 Opening / closing member 29 Disk cam 30 Spring 31 Shaft 32 Mounting plate 33 Lower folding member 34 Step portion 35 Side plate 36 Link 37 Slider 39 Spring 40 Band Work holding base 44 Band 46 Heat seal jig 50 Upper folding member 51 Base 52 Horizontal plate 53 Tapered surface 54 Step 55 Guide 56 Slider 57 Shaft 58 Link 59 Swing arm 60 Spring 61 Shaft 62 Roller 65 Work discharging direction M Band binding Product

Claims (5)

  A band bundling method for bundling a plurality of laminated sheet-like workpieces with a heat-welding band, the step of supplying the workpiece onto a workpiece holding plate and sandwiching it between a workpiece pressing plate, and the workpiece The band between the workpiece and the band / work holding table, and sandwiching the band between the workpiece and the band / work holding table; And a step of bending the band substantially vertically along both side edge portions of the workpiece by moving the upper folding member from both sides of the workpiece so that the vertical portion of the band is inward. A band bundling method comprising: a step of bending an end portion on the workpiece pressing plate and a step of thermally welding the overlapped portion. 2. The band according to claim 1, further comprising a step of lifting and bending the end portion of the work so as to return to the original flat state after the band binding is finished when the lower folding member is lifted along both side edge portions of the work. Bonding method. A band bundling device for bundling a plurality of stacked sheet-like workpieces with a heat-weldable band, a workpiece holding plate attached to the outer peripheral edge of a rotatable index table, and an attachment end of the workpiece holding plate A workpiece holding plate that is disposed below the side so as to be movable up and down and clamps one end of the workpiece between the workpiece pressing plate and a workpiece holding plate that is disposed below the tip side of the workpiece pressing plate so as to be movable up and down. The other end portion of the workpiece , and the band workpiece holding base for clamping the band supplied between the other end portion of the workpiece and the workpiece holding plate, the workpiece holding plate and the band A lower folding member comprising a side plate that rises along both side edge portions of the workpiece sandwiched between the workpiece holding base and bends the band substantially vertically along both side edge portions of the workpiece; Band vertical An upper folding member that bends the formed portion inward and overlaps the end portion on the work pressing plate, and a heat seal jig that presses and heat-welds the overlapped portion of the band. A band bundling device characterized by.   The band bundling device according to claim 3, wherein a band chuck is provided for pressing a band end overlapped on the work pressing plate onto the work pressing plate.   5. The band binding device according to claim 3, wherein stepped portions for lifting both side edge portions of the workpiece are provided inside the side plate of the lower folding member.

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