JPH0114145B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a belt-like member folding device for sequentially folding a belt-like member such as a plastic film sheet or a cylindrical member folded in half into predetermined dimensions.

Conventionally, this type of folding device uses, for example, a pair of rolls, and these rolls have a suction effect only at a certain angle to hold the film, and when one roll is suctioning the film, The non-adsorbing surface of the other roll faces the film, and the adsorbed film is pushed down by a presser bar, and as the roll rotates, the adsorbed part of one roll is separated from the part held by the presser bar. The suction part of the other roll faces the film and starts suctioning the film, and when the predetermined width of suction is completed, the film is pushed down by the presser bar on the other roll side, and by repeating this alternately, the film is A device that can be folded sequentially (Utility Model Application Publication No. 49327, 1983) has been proposed.

However, with this configuration, when the presser bar pushes down the film from the suction part of the roll, the film and roll slip, making it extremely difficult to fold the film to a certain length. There is a drawback.

SUMMARY OF THE INVENTION An object of the present invention is to provide a folding device that can reliably fold a continuous strip of plastic film to a predetermined length.

The present invention provides a flat plate-like actuating member having a mechanism for detachably holding a strip member and having working surfaces formed on both sides adjacent to a pedestal, and a holder for the actuating member near the pedestal. A shaft is placed at the end of the stand and serves as a center for inverting the actuating member so that it falls onto the pedestal, and a shaft is provided in the longitudinal direction of the actuating member to allow the actuating member to move freely in the horizontal direction.
A guide means is provided for guiding the actuating member from an inverted position on the pedestal to a retracted initial position, so that the band member can be folded by repeatedly inverting the actuating member and returning to the initial position by horizontal movement. ,
This aims to achieve the above objective.

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 shows a schematic configuration of the first embodiment of the present invention.
FIG. 2 shows a perspective view of its main parts. In these figures, a guide frame 2 formed in the shape of a rectangular frame is embedded in a base 1, and a pedestal 3 is provided within the guide frame 2 so as to be vertically slidable. Furthermore, there is a movement resistance between the surface of the guide shaft 4 protruding from the lower surface of the pedestal 3 and the partition wall 5 provided inside the guide frame 2, which provides a certain degree of resistance to the vertical movement of the pedestal 3. Means 6 are provided. The movement resistance means 6 includes a large number of recesses 7 formed on the surface of the guide shaft 4, a pin 8 that is slidably provided on the partition wall 5 and can be engaged with the recess 7, and a tip of the pin 8. A compression spring 9 urges the recess 7 to engage with the recess 7. At this time, the movement resistance means 6
is provided surrounding the guide shaft 4,
It may also be made of felt, rubber, etc. that provides sliding resistance to the guide shaft 4. Note that reference numeral 10 in the figure is a stopper that restricts the raised position of the pedestal 3.

On one side (left side in FIG. 1) of the base 1 at the periphery of the guide frame 2, a flat plate-shaped actuating member 11 having a substantially rectangular cross section is provided adjacent to the pedestal 3. This actuating member 11 is arranged around a fixed shaft 12 which is near the pedestal 3 in FIG.
The fixed shaft 12 is inserted into a communication hole 13 formed in the actuating member 11 in the width direction of the actuating member 11, and the actuating member is guided by a guide member (not shown). 1
1 is a communicating hole 13 extending in the longitudinal direction of the actuating member 11;
The communicating hole 13 and the guide member constitute a guide means for guiding the horizontal movement of the actuating member 11.

Both surfaces of the actuating member 11 have first and second holes provided with a large number of pores 14 that communicate the inside and outside of the actuating member 11.
15 and 16. Actuation member 1
The interior of the pipe 19 is bifurcated at one end, and is connected to the other end of a pipe 19 which has on-off valves 17 and 18 at the forked portion, respectively. A pressure reducing means 20 such as a pump is connected to a pressurizing means 21 such as a compressor via the on-off valve 18. As a result, the on-off valve 17 is opened, and when the inside of the actuating member 11 is depressurized by the depressurizing means 20 and air is sucked from the pores 14, the rolled raw material 22 is taken up from the roll 23, the loop 24, and the guide. A strip member 27 such as a plastic film supplied via a roll 25 is adsorbed on the working surface of the actuating member 11, while the on-off valve 18 is opened and the inside of the actuating member 11 is pressurized by the pressurizing means 21, so that air is Pore 14
When it is ejected from the belt-like member 27, the adhesion of the belt-shaped member 27 can be released and the belt-like member 27 can be separated.

In addition, a concave groove 28 is formed on both side surfaces of the actuating member 11 over substantially the entire length of the side surface so as to surround the communication hole 13, and the tip of the groove 28 is located on the side of the actuating member 11. and the roller 29
The distal end of a cylinder 30 equipped with a cylinder 30 is fitted therein, and the actuating member 11 is configured to be held between the distal end of the cylinder 30.

This cylinder 30 can be expanded and contracted in the vertical direction, and the upper end 30 is always maintained vertically.
1 is configured to rotate on an imaginary circumference 32 having a radius that is approximately the same length as the length of the actuating member 11 in the longitudinal direction.

Further, at the upper part of one side of the pedestal 3 on which the actuating member 11 is not attached, there is a presser tool having an approximately semicircular cross section and approximately the same length as the width of the strip member 27. 33 is provided so as to be able to rise and fall, and this presser 33 is biased downward by a coil spring 34 so as to appropriately press one end of the band member 27 folded onto the pedestal 3.

Next, the operation of this embodiment will be explained with reference to FIGS. 3 to 6.

As shown in FIG.
If the cylinder 30 is rotated clockwise with the strip member 27 adsorbed to the working surface 15 of
The actuating member 11 is lifted up by the lower end of the cylinder 30 and is attached to the fixed shaft 1 while holding the strip member 27.
Start reversing around 2.

Furthermore, the cylinder 30 is rotated, and the cylinder 3
0 reaches the rightmost end in the figure, the actuating member 11 is placed horizontally upside down on the pedestal 3 (see FIG. 4). At this time, presser 33
is caused by the end of the actuating member 11 in the counter-biasing direction (the fourth
Since the actuating member 11 is rotated in the counterclockwise direction 5) in the figure, the operation of the actuating member 11 is not blocked by the presser 33.

If the cylinder 30 is further rotated from the state shown in FIG. 4, the lowest end of the cylinder 30 will be
Actuating member 1 along within groove 28 via roller 29
1 from the right end to the left end in the drawing, the actuating member 11 itself remains stationary (see FIG. 5).

FIG. 5 shows that when the valves 17 and 18 are switched from the shown state to inject air from the pore 14, the holding of the strip member 27 by the actuating member 11 is released, and from this state, the cylinder 30 is further rotated. , the actuating member 11 slides horizontally toward the left side in the figure and returns to the retracted initial position. On this occasion,
Since the holding by the actuating member 11 is released, the strip member 27 will remain folded on the pedestal 3 (see Fig. 6), but the actuating member 11 is slid as shown in Fig. 7. At this time, presser foot 3
Since the end of the strip member 27 is pressed by 3,
The folded state of the band member 27 will not be disturbed due to being dragged by the slide of the actuating member 11.

In this way, one folding operation is performed, but if the same operation is repeated repeatedly, the strip members 27 can be folded and stacked on the pedestal 3 one after another. becomes. Band-shaped member 27
is stacked on the pedestal 3 to a predetermined height, the pedestal 3
is successively lowered against the movement resistance means 6, and the folding operation is performed smoothly. Also, original fabric 2
2 is made to rotate at all times, and its feeding is continued even in processes in which the strip member 27 is not pulled out much by the actuating member 11, for example, in processes such as those shown in FIGS. 4 and 5. A predetermined amount or more of slack is always formed in the belt-shaped member 27 so that the belt-shaped member 27 can be smoothly pulled out by the actuating member 11.

According to this embodiment as described above, the working surface 1 has both sides capable of attracting and releasing the strip member 27.
5 and 16, the actuating member 11 is inverted while the strip member 27 is in an adsorbed state, and the actuating member 11 is collapsed onto the pedestal 3 side, and the actuating member 11 is placed on the pedestal 3 with the strip member 27 in a released state. Since it is configured to return to the initial position by horizontal movement, the band member 27 such as a plastic film sheet or bag can be reliably folded to a predetermined length. Furthermore, when the strip member 27 is attracted by the action surface 15 or 16 and falls onto the pedestal 3 side, the strip member 27
7 is given an appropriate tension, so that the band member 27 is less likely to wrinkle when folded. Moreover, since a presser tool 33 is provided at the upper part of one side of the pedestal 3, even when the actuating member 11 is slid and pulled out from the folded band member 27 on the pedestal 3, The folded state of the band member 27 will not be disturbed. Further, since the structure and drive mechanism of the actuating member 11 are relatively simple, it can be provided at low cost.

Note that the lowermost end of the cylinder 30 is the actuating member 11.
Although the fixed shaft 12 may be configured to pass through the inside of the actuating member 11 in the same manner as the fixed shaft 12, the fixed shaft 12 may also be configured to hold the actuating member 11 in place. It may be configured to do so.

A second embodiment of the invention is shown in FIG. In this figure, the actuating member 11 has working surfaces 15 and 16 as in the first embodiment, but protrusions 41 are provided on both sides of the actuating member 11 along the longitudinal direction. This protrusion 41 constitutes a guide means for guiding the horizontal movement of the actuating member 11 together with the rail member 42, and the protrusion 41 has a plurality of bearing rolls 43 between the two upper and lower rail members 42.
It is slidably held in between. The rail member 42 has a rotating shaft 44 provided at the center in the longitudinal direction.
It is configured to be able to rotate around the center, and a retainer is provided at the end. The rotating shaft 44 includes a rail member 42, a bearing roll 43, and a protrusion 41.
This serves as the central axis of reversal when the actuating member 11 is reversed via.

The interval between the rail members 42 disposed on both sides of the actuating member 11 in the width direction is larger than the width dimension of the pedestal 3, and when the rail member 42 rotates around the rotating shaft 44, the rail member 42 is connected to the pedestal 3. It's learned not to interfere.

In the second embodiment configured in this way, the rail member 4 of the actuating member 11 by the protruding strip 41 is
2 and rotation about the rotation axis 44 of the rail member 42 itself,
The folding operation of the band member 27 is performed in the same manner as in the first embodiment.

According to the second embodiment as described above, in addition to the same effects as the first embodiment, there is also an effect that a series of operations of the actuating member 11 can be performed more smoothly.

FIG. 9 shows a third embodiment of the present invention. In this embodiment, unlike the second embodiment, the rail member 45 extends along the longitudinal direction of the actuating member 11. A plurality of roll bodies 4 are formed in an oval shape and are provided on the operating member 11 so as to protrude from both sides of the operating member 11 on the rail member 45.
6 is rotatably fitted within the rail member 45. The rail member 45 and a plurality of roll bodies 46 provided in the longitudinal direction of the actuating member 11 constitute a guide means for guiding the horizontal movement of the actuating member 11. According to the third embodiment configured in this way, it operates in the same manner as the second embodiment and can obtain the same effects.

In addition, as the band-shaped member 27 in each of the above-mentioned embodiments, as shown in FIG. 10, the band-shaped member 27
Cut portions 47 extending in the width direction may be provided at predetermined intervals in the longitudinal direction. At this time, as shown in FIG. 11, a protruding member 48 formed in a rod shape or the like is provided on the pedestal 3,
The projecting member 48 may be inserted into the notch 47 of the folded band member 27 to maintain the folded state of the band member 27.
In this case, both active surfaces 15 and 16 of the actuating member 11
is provided with a groove 49 having a predetermined shape so that the protruding member 48 does not interfere with the series of operations of the actuating member 11.

Further, in the above embodiment, the band member 27
The mechanism for removably holding the
However, the present invention is not limited to this. For example, a claw-like member attached to the actuating member 11 so as to be able to move forward and backward from both sides of the band-like member 27 may It may be configured to hold or release as appropriate.

As described above, according to the present invention, it is possible to provide a folding device that can reliably fold a strip member to a predetermined length.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a schematic configuration of a first embodiment of the present invention, FIG. 2 is a perspective view showing main parts of the first embodiment, and FIGS. 3 to 7 are explanatory diagrams of its operation. 8 and 9 are perspective views showing the schematic structure of the main parts of the second and third embodiments, respectively, FIG. 10 is a plan view of a band-shaped member applicable to other embodiments, and FIG. 11 is the above-mentioned FIG. 7 is a sectional view showing a pedestal in another embodiment. 3... pedestal, 11... operating member, 12... fixed shaft, 13... communicating hole, 14... pore, 15, 16
... Working surface, 27 ... Strip member, 28 ... Groove, 3
0...Cylinder, 41...Protrusion, 42, 45...
Rail member, 44... rotating shaft, 46... roll body.

Claims (1)

[Scope of Claims] 1. A flat plate-shaped actuating member that is disposed adjacent to the pedestal and has working surfaces on both sides that have a mechanism for removably holding the band-like member; A shaft is placed at the end of the pedestal side and serves as the center for inverting the actuating member so that it falls onto the pedestal, and a shaft is provided in the longitudinal direction of the actuating member to allow the actuating member to move freely in the horizontal direction. 1. A device for folding a band-like member, comprising a guide means for guiding an actuating member from an upper inverted position to a retracted initial position. 2. Claim 1 is characterized in that the mechanism for removably holding the strip member is formed of a plurality of pores that are provided on the working surface and enable adsorption and release of the strip member. Folding device for strip-shaped members. 3 In claim 1 or 2,
1. A folding device for a band-shaped member, characterized in that a presser for appropriately pressing the band-shaped member is provided on the side of the pedestal opposite to the side on which the operating member is provided.