JPS5856795A - Method of cutting laminated sheet made of plastic film - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for cutting a laminated sheet made of plastic film. It exhibits a better effect when cutting in a certain state.

Conventionally, as a laminated sheet made of plastic film used as a cushioning material, two laminated sheets 1 made of plastic film each having a large number of air chambers each consisting of independent projections 1a as shown in FIG. When stacking several sheets and cutting them to a predetermined length, use the method shown in Figure 2.

Using a reel 6 having a holding arm 2 on a diagonal part of a polygon,
The laminated sheet 1 was continuously wound around the reel 3 a predetermined number of times and cut at the A position, for example.

However, since each laminated sheet 1 has a thickness of about 5 to 1.degree., the layer obtained by stacking several laminated sheets 1 becomes quite thick. Therefore, if the layer 4 of the laminated sheet 1 which has been wound around the reel 3 in multiple layers and cut is opened into a flat plate, the result will be as shown in FIG.

The lengths of the top and bottom are quite different. This is because the laminated sheet 1 wound around the reel 6 is thick and there is a considerable difference in diameter between the outer layer and the inner layer. therefore,
The laminated sheet 1 cut in this manner has a drawback that its length is not constant and there is a considerable amount of waste. Also,
Since the length of the cut laminated sheet layer 4 is determined according to the diameter of the reel 3, it is not possible to arbitrarily change the cut length of the laminated sheet layer 4 in one cutting. Of course, if you expand and contract the holding arm 2 of the reel slot to change the diameter of the reel slot, or replace the reel 6 itself with a reel 3 of a different diameter,
Although it is possible to change the cutting length of the laminated sheet 1, these operations are extremely troublesome. Furthermore, when cutting the cylindrical laminated sheet layer as shown in FIG. 2 into a flat plate shape as shown in FIG. In addition, some of the inner or outer laminated sheets 1 may be irregularly wavy or wrinkled, which is different from the adjacent laminated sheets 1, and this also increases the slip resistance between the laminated sheets 1. Therefore, extra effort and time were required to properly stretch each laminated sheet 1. At that time, the laminated sheet 1 that was located at the tip of the holding arm 2 of reel B
to the part.

A crease 1b as shown in FIG. 3 may be formed,
This may obstruct the flattening of the laminated sheet layer 4, and in some cases may result in products such as cushioning materials being defective.

The present invention aims to eliminate these drawbacks.

Several laminated plastic film sheets are overlapped and cut to allow for precise and efficient cutting into desired dimensions.

In the method for cutting a plastic film laminate sheet of the present invention, each plastic film laminate sheet is pulled out from a roll of plastic film laminate sheets arranged in several rows.

With the unwound parts overlapped, place the holding stand and receiver on the stand consisting of a stand, and position the cutting blade in the operating position. The layers of the laminated sheet made of plastic film are held down before and after the cutting blade operating position, and the cutting blade cuts the layers of the laminated sheet at once. After cutting the layers of the laminated sheet, the thickness of the laminated sheet layer to be cut is The holder was moved vertically relative to the moss by an amount corresponding to the height of the moss.

In addition, in the cutting device for plastic film laminated sheets of the present invention, a roll holding table is provided which rotatably holds rolls wound with plastic film laminated sheets arranged in several rows, and two plastic film laminated sheets are stacked one on top of the other. A holding stand and a receiving stand on which the layer is placed are provided so as to be movable relative to each other in the vertical direction at the operating position of the cutting blade.
The holding stand and the receiver were constructed so that a holding member was provided on the stand to hold down the plastic film laminated sheet layer during cutting.

Next, one embodiment of the present invention will be explained in detail with reference to one embodiment shown in two drawings.

In Figures 4 to 7, 5 is a roll in which a laminated sheet 1 made of plastic film having a large number of air chambers consisting of independent protrusions 1a as shown in Figure 1 is wound many times, and 6 is a roll shaft. , 7 is a roll holding stand, and 8 is a groove for roll bearings provided on each pillar 9 on both sides of the roll holding stand 7.

The pillars 9 are arranged in parallel, for example, in five rows in the left and right direction in FIG. A groove 8 is provided, and one set of pillars 9 is used to hold two upper and lower rolls 5.
Hold it so that it can rotate freely.

For example, a total of 10 rolls 5 can be held in two stages. The reason why several grooves 8 are provided above and below each column 9 is to enable rolls 5 of different diameters to be held as desired. Then, the laminated sheet 1 made of plastic film is pulled out from each roll 5, and the unrolled portions are overlapped with each other, and the holding table 10 and the receiver are placed on the table 11.
It was placed on a table consisting of In addition, when there are five rolls 5 in the upper and lower rows, each roll 5
There are 10 sheets unwound on the holding table 10, 5 sheets each on the top and bottom between the holding table 10 and the leftmost roll 5 in FIG. 4, and 4 sheets each on the top and bottom between the 9th roll 5. One by one.

After that, the number of sheets decreases one by one.

The rolls 5 can all be held horizontally, but they can also all be tilted in the same direction at a slight angle θ, for example, 1 to 2 degrees, as shown in FIG. can. If you tilt it slightly like this, the roll 5 will be on one of the pillars. Since the end faces of the laminated sheet 1 and the laminated sheet layer 4 unwound from the respective rolls 5 can be reliably and easily aligned. In this case, in order to prevent the end surface of the roll 5 from coming into direct contact with the pillar 9 and damaging the end surface, a disk-shaped side plate 12 fixed to the roll shaft 6 is installed at the portion where the end surface of the roll 5 is located. It is also possible to set The side plate 12 is made of a material 9 with good slipperiness.
For example, a synthetic resin plate made of Teflon, high density polyethylene treated with silicone, etc. is used.

Note that when the laminated sheet 1 is made of polyethylene or the like which is likely to accumulate electricity, static electricity may be generated between each roll 51'd1 or the roll 5 and the unwound laminated sheet 1. In that case, install a static electricity removal brush made of grounded wire in the space between each roll 5 to prevent the generation of static electricity, or install an air jet pipe as appropriate to blow out the air. It is preferable to prevent entanglement of the laminated sheet 1 by the action of air.

When the laminated sheets 1 are unwound from each roll 5 and pulled out in the direction of the holding table 10, the two laminated sheets 1 do not partially sag or wrinkle, and all the laminated sheets 1 are stacked correctly. It is preferable to apply a relatively light brake to each roll shaft 6 so that the roll shaft 6 can be rotated.

In FIG. 4 and FIGS. 6 and 7, reference numeral 10 denotes a horizontal plate-shaped holder on which the laminated sheet layer 4 is placed.

The holding table 10 is attached to the guide column 16 vertically by an upper sliding tube 1 fixed to a part of the holding table 10 and a lower sliding tube 15 attached to the sliding tube 16 via a rack 14. It was installed so that it could slide freely in the direction. A shaft 18 is rotatably attached to the guide column 16 located between the upper and lower sliding tubes 13 and 15 by a bearing 17, and a pinion 19 and a handle 20 are fixedly attached to the shaft 18. The pinion 19 is engaged with a rack 14 that is vertically fixed to the holding base 10, and by turning the nozzle 20, the rack 14 that is engaged with the pinion 19 is moved up and down.

The holding table 10 can be moved up and down. One end of a rope 21 or a wire is attached to a part of the holding table 10, the rope 21, etc. is wound around a pulley 22 attached to a part of the roll holding table 7 or the ceiling, and a balance weight is attached to the other end of the rope 21, etc. 23 to make it easier to move the holding table 10 up and down smoothly.

It can be lifted with relatively light force. 24 is a rectangular tube-shaped enclosure for safety that surrounds the balance weight 23. In addition, sliding tube 13.15. Rack 14. Binion 1
9. The nozzles 20 and the like were arranged symmetrically on both sides of the holding table 100. The reason why the knobs 20 are provided on both sides is so that they can be operated arbitrarily from either side.

As shown in FIG. 6, the distal end of the holding base 10 has a base extending in a direction perpendicular to the traveling direction of the laminated sheet layer 4.

A relatively thin elongated hole 25 penetrating in the vertical direction is provided, a cutting blade (not shown) is inserted into this elongated hole 25, and
It was moved so that the laminated sheet layer 4 could be cut.

As the cutting blade, a large knife that cuts manually, a movable knife that cuts automatically, a rotary saw blade, a band saw blade, etc. can be arbitrarily used.

A bracket 26 is attached to a part of both sides of the holding base 10, and the bracket 26 has a holding member 28 having a relatively short arm 27 and a holding member 3 having a relatively long arm 29.
0 were attached rotatably. The pressing member 28 is 2
Usually, as shown in FIGS. 4 and 6.7, it is located on the upper surface of the tip of the holding base 10 and on the rear side of the elongated hole 25.

The laminated sheet layer 4 to be cut can be held on a holding table 10. On the other hand, when the laminated sorting layer 4 is not cut, the presser member 30 is lifted upward and removed from the sliding tube 13 as shown by the solid line in FIG. 4 and as shown in FIGS.
It is leaning against the wall.

When cutting the laminated sheet layer 4, the receiver was designed to hold the laminated sheet layer 4 on the stand 11, as shown by the two-dot chain line in FIG. However, when using a manual knife as a cutting blade, this presser member 0 is fine, but if an electric cutting blade is installed in advance at the operating position of the cutting blade, it can be rotated to the holding base 10 side. The freely attached presser member 30 may interfere with the cutting blade or the cutting blade holding member when it rotates, so in that case, the receiver is a presser member for holding down the laminated sheet layer 4 on the table 1.1. For 60 only, the receiver is 1
A holding table 1 is provided at the end of the wound. In this case, the holding member is not limited to the rotating arm type shown in FIG. 2, but may be of a type that moves up and down in the vertical direction, or of other types. Note that the rod-shaped press members 28 and 30 that press the laminated sheet layer 4 in a state in which it is traversed may be fixed to the arms 27 and 29.

It may be mounted rotatably. The filter 1 is a roller provided substantially flush with the upper surface of the holding table 10, and the roller 31 is rotatably attached to the sliding tube 13 by a bearing 32. 33 is bearing slot 4
This is a roller attached to the upper roll 5 side of the sliding tube 13, and the laminated sheet layer 4 unwound from the upper roll 5.
It is useless to guide you. The roller 31 is provided to facilitate the movement of the laminated sheet layer 4 on the holding table 10.

The support stand 11 provided adjacent to the holding stand 10 in the front direction is for placing the leading end side of the laminated sheet layer 4 when cutting the laminated sheet layer 4. If the holding stand 10 is provided to be movable up and down, there is no need to move the support stand 11 up and down, so it is possible to use one that does not move up and down, but vice versa.

When the holding stand 10 is fixed, it is preferable that the receiver allows the stand 11 to move in the vertical direction. The upper surface of the receiver stand 11 is constituted by a belt 35 that is slightly wider than the laminated sheet layer 4, so that the cut laminated sheet layer 4 can be easily moved.

When cutting several laminated sheets made of plastic film in a stacked state, first, as shown in FIG. Then, the end portions of the laminated sheets 1 are pulled out from each of these rolls 5, and the fully stacked laminated sheet layers 4 are brought onto the holder 10 and the receiver 11. in this case.

If, for example, five rolls 5 are arranged in the front and rear direction.

A laminated sheet layer 4 in which ten laminated sheets 1 are stacked is placed on the holding table 10 and the receiving table 11.

It should be noted that since each roll 5 is slightly inclined toward the front, each laminated sheet 1 is brought to the front side, and the laminated sheet layer 4 is neatly aligned on the front side.

After pulling the tip of the laminated sheet layer 4 and positioning the tip of the laminated sheet layer 4 at a predetermined position on the holder 11 according to the desired cutting length, the holding member 28 is used to hold the holder 10.
Hold the laminated sheet layer 4 in front of the operating position of the upper cutting blade using the holding member 30.

The support on the opposite side of the cutting blade operating position presses the laminated sheet layer 4 on the table 11 to prevent the laminated sheet layer 4 from moving.

In this state, a cutting blade (not shown) is inserted into the elongated hole 25 and pulled in a direction perpendicular to the laminated sheet layer 4 to cut one laminated sheet layer 4 at a time. Once the cutting is complete.

Only the presser member 30 or both presser members 28130 are raised, and the cut laminated sheet layer 4 is completely moved onto the tray 11.

Next, the handle 20 is turned to raise the holding base 10 by an amount corresponding to the thickness of the cut laminated tape layer 4.

In this state, the receiver pulls out the next section of the laminated sheet layer 4 on the holding table 10 to be cut to a predetermined position on the table 11.
First, the receiver is easily cut and stacked on the laminated sheet layer 4 on the table 11. In this state, the presser member 28. ``1'' holds the laminated sheet layer 4 before and after the cutting blade operating position, and the laminated sheet layer 4 is cut by the cutting blade.

Thereafter, the above-mentioned 4 operations were repeated and kneaded. The holding table 10 is lifted up by an amount corresponding to the thickness of the cut laminated sheet layer 4, and cutting is performed several times.

2. For example, if cutting is repeated five times and 50 cut laminated sheet layers 4 are assembled on the table 11, the receiver will carry them away as is to a predetermined location.

Alternatively, this receiver can hold 50 of these cut thick laminated sheet layers 4 at a time on the other end side of the table 11.

Cut again to desired smaller size. When cutting the thick laminated sheet layer 4, use the receiver at the other end side of the table 11.

The cutting is done by the vertically moving band-shaped saw blades of a rotary band saw in a fixed position.

The support stand 11 shown in FIG. 4 can be moved in a direction perpendicular to the plane of FIG. 4. Ro6 is the wheel.

37 is a rail.

In addition, when unwinding and cutting the laminated sheet 1 from each roll 5 one after another, if the unwinding of the laminated sheet 1 from each roll 5 is completed at the same time, all the rolls 5 may be changed to a new roll 5 at the same time. However, if the laminated sheet 1 still remains on the other rolls 5 and the laminated sheet 1 runs out on only some rolls 5, only the roll 5 from which the laminated sheet 1 has been unwound is replaced with a new roll. 5. Change your smile.

The rear end of the unrolled laminated sheet 1 and the leading end of the laminated sheet 1 of the new roll 5 are glued together with cellophane tape or the like to form a continuous state, and in this state, unwinding and cutting of the laminated sheet 1 is continued. .

Of course, the parts above will be defective.

The laminated sheet 1 including that part is not used as a product.

In this way, in one aspect of the present invention, a relatively thick laminated sheet made of a relatively thick plastic film is unwound from each roll and is directly stacked in a large number of layers and then cut. This allows you to easily and efficiently cut everything to exact dimensions. In particular, it has many air chambers consisting of independent protrusions,
When cutting multiple layers of plastic film laminated sheets with a thickness of 5 to 10 mm, this method is now used to cut several layers on a reel, which was not a problem when cutting thin sheets like paper. In comparison, all the lengths of the cut laminated sheets can be cut to the same length, or they can be arbitrarily cut to a desired and appropriate length. Since the inside of the laminated sheet layer does not become partially undulated or wrinkled, there is no need to worry about stretching and aligning the cut laminated sheet layer properly. Also.

After stacking several sheets and cutting them, the holding table is sequentially moved upwards relative to the receiving table, and the pulling out and cutting of the laminated sheet layers is repeated, making it possible to perform the cutting operation quickly. In addition, since the receiver allows several dozen cut laminated sheets to be stacked on the table, subsequent cutting and transportation can be carried out efficiently, which is extremely useful in practice.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an example of a plastic film laminated sheet cut by the present invention, Fig. 2 is a front view showing an example of a conventional cutting device, and Fig. 6 is the cutting device shown in Fig. 2. 4 is a front view showing an embodiment of the apparatus for carrying out the method of the present invention, and FIG. −■
Figure 6 is a sectional view taken along the line ■-■ in Figure 4, Figure 7
The figure is a view taken from the line ■-■ in FIG. 4. 1... Laminated sheet made of plastic film. 4... Laminated sheet layer, 5... Roll, 7... Roll holding stand, 10... Holding stand, 11... Receiving stand. 13.15...Sliding tube, 14...Rack, 16...
・Guide pillar, 19...pinion, 20...handle. 25... Long hole, 28.30... Holding member, 35...
・Belt patent applicant Fukuda Co., Ltd. Same as above Ube Industries Co., Ltd. No. 15! Q 1a 2nd r! J Figure 3 Figure 5 (!I) Figure 6 0 2018291021 7rII

Claims (2)

[Claims] (1) Each plastic film laminate sheet is pulled out from a roll of plastic film laminate sheets arranged in several rows, and the 9 unwound parts are stacked on top of each other. The cutting blade is positioned at the operating position, and the layer of the laminated sheet made of plastic film is held down before and after the operating position of the cutting blade, and the layers of this laminated sheet are cut at once with the cutting blade. A method for cutting a laminated sheet made of plastic film, in which a holding table is moved vertically relative to a support by an amount corresponding to the thickness of the laminated sheet layer to be cut. (2) A roll holding stand is provided to hold rolls wrapped with laminated sheets made of glass film in several rows, allowing each roll to rotate freely, and a holding stand and a receiver are provided on which two stacked layers of laminated sheets made of plastic film are placed. is provided so as to be movable in the vertical direction relative to the operating position of the cutting blade, and the holding stand and the receiver are made of a plastic film laminated sheet with a presser member on the stand that holds down the plastic film laminated sheet layer during cutting. cutting equipment.