JPH0430332B2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a device used when inserting a large number of sheet-like items such as bags, book covers, and wrapping cloths made of synthetic resin film into an outer bag or outer tube made of synthetic resin film. be.

As a conventionally known device, a device is known in which a large number of stacked bags are held in a flat state by comb-shaped plates from above and below, and the bags are inserted into an outer bag.
However, in this type of device, the stacked bags are held horizontally from above and below with clamping tools and inserted into the bags, so the corners of the bags may turn over during insertion, and the clamping tools themselves may Because it is quite thick, it cannot be packaged unless there is a considerable amount of space in the outer bag.
The inner bag is easily disorganized after packaging, and until now, this type of packaging has hardly been practical.

Therefore, the applicant of this application first applied for
No. 76272, we developed an innovative method and device for packaging this type of sheet-like material.

That is, the pair of receiving plates 11 extending in the stroke direction and supported at one end by a cantilever on the movable frame 10 that reciprocates in a straight line with a set size stroke reciprocates from a horizontal state to an upright state around their respective inner edges. This pair of cradle 1
A pair of presser plates 13 that can be opened and closed from a state substantially perpendicular to the outer edge of the plate 1 to a parallel state are provided on the outer edge of the presser plate 1.
move from a horizontal state to an upright state while remaining parallel to each other, and move forward as the movable frame 10 advances, and in the forward position, the pair of receiving plates 11 and press plate 13 become horizontal, and the movable frame retreat with
Using the device in which the presser plate 13 is in the open state, the stacked sheet material B is bent into a V-shape or U-shape, inserted into the exterior tube band T, and spread horizontally therein.
We have developed a device that pulls out the entire device from the exterior tube band T. Through private experiments with this device, it was confirmed that the desired excellent effects could be obtained. However, depending on the thickness, material, and number of sheets stacked, there is a risk that wrinkles may form in the center when folded, and these wrinkles may remain until the outer bag is inserted, making it difficult to seal the outer bag. It has been found that there is a risk of making the bag incomplete or damaging the bag inside.

Therefore, the purpose of this invention is to improve such drawbacks of the device of the prior invention, and is aimed at preventing wrinkles from forming in the center when folding a group of stacked bags. .

This invention is based on the device of the prior invention as described above, in which a pair of receiving plates extending in the stroke direction and supported at one end by a cantilever on a movable frame that reciprocates in a straight line with a set size and stroke are each It is provided around the inner edge so that it can be rotated back and forth from a horizontal state to an upright state, and on the outer edge of this pair of receiving plates, there is a pair of presser plates that can be opened and closed from a state that is substantially perpendicular to the plate to a state that is parallel to it. are provided, the pair of receiving plates and the pair of presser plates change from a horizontal state to an upright state while remaining parallel to each other, and move forward as the moving frame advances, and in the forward position, the pair of In a device in which the receiving plate and the holding plate are in a horizontal state, retreating together with the moving frame, and the holding plate returns to the open state, there is a free end position of the pair of holding plates parallel to the stroke direction of the moving frame. Sub-holding members that are long along the edges are pivotally connected to the holding plate or a supporting member integral therewith by axes parallel to the respective free edges, and each of the sub-holding members extends inwardly. This stacked sheet folding device is characterized in that the device is connected to a drive mechanism that rotates the presser plate by 180° prior to the closing operation and returns the presser plate after the opening operation.

The present invention will now be described based on representative embodiments shown in the drawings.

The movable frame 10 is provided so as to be able to reciprocate over a set length stroke on a horizontal guide rail 15 fixed to the machine frame 14. Frame 1
0, and are each pivotally connected to the moving frame 10 by pivot shafts 16 parallel to the guide rail, so that the pair of receiving plates 11 reciprocate from a horizontal position to a vertical, substantially parallel state. It is provided so as to be rotatable, and these drives are normally performed by pneumatic pressure, that is, by a first air cylinder device 17. Both outer edges 12 of the pair of receiving plates 11 stand up slightly (a dimension slightly larger than the thickness of the sub-pressing member described later),
A second parallel to the guide rail 15 is provided on the upper edge thereof.
A second air cylinder device 19 is attached to the second air cylinder device 19 so that the presser plates 13 are opened and closed from a position perpendicular to the receiving plate 11 to a position parallel thereto. It is provided so that it can be rotated back and forth depending on the direction of the movement.

In this invention, in addition to the above configuration, sub-pressing members 20 are further provided as follows.
That is, the presser plate 13 parallel to the guide rail 15
The sub-pressing members 20 parallel to the free end edges 21 are each provided so as to be able to rotate approximately 180° around an axis 22 parallel to the free end edges 21 provided on the support portion of the holding plate 13, In the illustrated embodiment, the third air cylinder device 2 provided on the axis 22
The linear reciprocating motion of 3 is directly transmitted to the circular cam 24, and by means of the pin 25 that engages with the cam 24, the auxiliary holding member 20 is moved from the position of the free edge 21 (see FIG. 5) to the holding plate 13. It is provided so that it can be rotated in a semicircular arc until it reaches a position near the base (see Fig. 6).

In the illustrated embodiment, the sub-pressing member 20 is rod-shaped, and is pivoted only at one end of the base.
Even if the other end portions are pivotally connected to the presser plate 13, and even if they are not rod-shaped but elongated plate-shaped, there is no difference in the present invention. Further, the drive mechanism for rotating the sub-pressing member 20 may be a pneumatic mechanism as described above or an electromagnetic mechanism, and the present invention will not change in any way. In short, as shown in FIG. 6, it is not limited to the above example as long as it can be turned in a semicircular arc shape.

In the present invention configured as described above, in order to fold the stacked sheet materials B, the sheet materials B are transferred onto the receiving plate 11 into individual sheets by another conveying means (not shown). Place the items in an orderly stack. The sheets B placed in this manner generally have a considerable amount of air interposed between the individual sheets, and the apparent total thickness of the stacked sheets B is the same as that of the actual sheets. It is considerably bulkier than the sum of its thicknesses (see Figure 5).

Next, a pair of third air cylinder devices 23 are used to turn the pair of sub presser members 20, and while pulling the stacked sheet material B to both sides, the pair of sub presser members Member 20
It is pressed against the receiving plate 11 by the screws.

Next, by the second air cylinder device 19, the pair of press plates 13 in the vertical state rotate around the second pivot 18 and fall inward to press the stacked sheet material B on the receiving plate 11 (seventh reference).

Next, the pair of receiving plates 11 are rotated around the pivot shaft 16 by the first air cylinder device 17, and the pair of receiving plates 11 and the presser plate 13 are both erected, and the stacked sheet material B is shaped like a V-shape. Fold it into a U shape.

During these operations, the tip of the flat exterior tube band T is opened using another device outside the device of the present invention, and the support frame 10 is guided to the guide rail 15 into the opening. Move the catch plate 1
1 and holding plate 13, and inserting sheet group B folded into a V-shape or U-shape. in a horizontal state, press the sheet group B from the outside of the exterior tube band T, return the movable frame 10 to its original position, and move the entire device of the present invention to the exterior tube band T.
After more complete removal, the presser plate 13 is returned to its original position using the second air cylinder device 19, and then the sub-presser member 20 is returned to its original position using the third air cylinder device 23.

The above operation is repeated every time a new stacked sheet material B is supplied onto the receiving plate 11.

As described above, the apparatus of the present invention can reliably bend stacked sheets into a V-shape or U-shape, and can easily be inserted into the exterior tube band T, especially when individual sheet-like objects can be folded into a V-shape or U-shape. is extremely thin
Even when the sheet size is 20 μm or less, or when the sheets are bulky due to air intervening between them, the stacked sheets on the receiving plate 11 can be held down by the sub-pressing member 20, which operates as described above. In order to hold a shaped object while pulling its both edges to both sides,
Due to the presser plate 13, the folded parts of the stacked sheet materials B are hardly wrinkled when they are pressed against the receiving plate 11 or when they are bent, and after being inserted into the exterior tube band T in the subsequent process. There is no risk of wrinkles remaining on the sheet group B.

[Brief explanation of drawings]

The figures relate to this invention, and are shown in Figures 1 to 3.
The figure is a schematic perspective view showing the process of inserting the sheet-like material into the exterior tube band, FIG. 4 is a perspective view of the folding device of the present invention, and FIGS. 5 to 8 are schematic views showing the folding process. , FIG. 9 is a schematic diagram of the drive mechanism of the sub-pressing member. Code, 10...Movement frame, 11...Socket plate, 12...
...both side edges, 13...pressing plate, 14...machine frame, 15
...Guide rail, 16...Axis, 17...1st
Air cylinder device, 18... Second axis, 19...
Second air cylinder device, 20... Sub-pressing member, 2
DESCRIPTION OF SYMBOLS 1... Free edge, 22... Axis line, 23... Third air cylinder device, 24... Circular cam, 25... Pin, B... Stacked sheet-like material, T... Exterior tube band.

Claims (1)

[Scope of Claims] 1. A pair of receiving plates extending in the stroke direction and supported at one end by a cantilever on a moving frame that reciprocates in a straight line with a set dimension stroke reciprocates around the respective inner edges from a horizontal state to an upright state. A pair of holding plates are provided on the outer edges of the pair of receiving plates and can be opened and closed from a state substantially perpendicular to the holding plates to a position parallel to the holding plates. The plates change from a horizontal state to an upright state while remaining parallel to each other, and move forward as the moving frame advances.At the forward position, the pair of receiving plates and presser plates become horizontal, and move backward together with the moving frame. In the device in which the presser plates return to the open state, a long sub-presser member is provided along the free edges of the pair of presser plates at free edge positions parallel to the stroke direction of the moving frame of the pair of presser plates. The sub-pressing members are pivoted to the holding plate or a support member integral therewith by an axis parallel to the edge, and each of the sub-holding members is rotated inwardly by approximately 180° prior to the closing movement of the holding plate. 1. A device for folding stacked sheet-like materials, characterized in that the device is connected to a drive mechanism that causes the holding plate to return after the opening operation. 2. The laminated sheet folding device according to claim 1, wherein the sub-pressing member is one of a rod and a plate. 3. The stacked sheet folding device according to claim 1, wherein the drive mechanism for the sub-pressing member is one of a pneumatic mechanism and an electromagnetic mechanism.