JPH0222239Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention is mainly intended for long film-like materials for packaging or bag making, and is used in the field of cutting such materials into required lengths, and in the field of lap splicing. It is used in the field of

That is, the present invention relates to means for facilitating the handling of the material during cutting or splicing.

[Conventional technology]

When cutting a long film-like material to a required length, it is desirable to capture the vicinity along the planned cutting line.

As a first prior art example of such a capturing means, a film splicer is known which consists of a suitable table for supporting a film-like material and a bar or roll-like presser. However, in this conventional example, the area near the planned cutting line of the material is spread out on the table and then pressed down with a presser, or the area near the planned cutting line is sandwiched between the presser and the table and then placed on the table. It has to be expanded. Therefore, the capturing operation prior to cutting to the required length is surprisingly time consuming.

Further, as a second conventional example regarding the capturing means,
A film splicer is known that uses a table with a large number of small holes drilled in rows along its length, and each of these small holes is connected to a source of negative air pressure. Therefore, according to this conventional example, the vicinity of the planned cutting line of the film-like material can be attracted onto the table by the negative air pressure applied to the outside from the small hole row of the table, which is different from the first conventional example. This makes the task of capturing it easier than in the previous example.

However, in all of these conventional examples, the material to be cut can only be captured on one side of the planned cutting line. Therefore, as the material is cut, one of the cut ends on both sides of the cutting line is released and becomes unstable, making not only the cutting operation but also the subsequent handling of the material troublesome. There are some inconveniences.

On the other hand, when splicing film-like materials, the ends of the two materials to be spliced must first be trimmed parallel to each other prior to splicing. In such trimming work, it is desirable to capture the vicinity of the edge of the material so that it does not move. Such a capturing operation can also be performed using the above-described first and second conventional examples as they are, and the second conventional example is easier. However, in these conventional methods, as described above, the material to be cut can only be caught on one side of the planned cutting line, and the same operation must be repeated for each end of both materials to be spliced. This makes the trimming work troublesome,
Of course, when stacking the trimmed edges together,
Since it is possible to capture only one side, it is important to correctly overlap both ends with the same overlap width.
It is quite difficult.

[Problem that the invention attempts to solve]

Therefore, the present invention attempts to solve the problems seen in the first and second conventional examples as described above.

That is, the first object of the present invention is to provide a method that, when cutting a long film-like material to a required length, allows the material to be cut along the planned cutting line while catching the material on both sides of the planned cutting line. It is in the point of doing.

A second object of the present invention is to make it possible to overlap film materials while simultaneously capturing the trimmed ends of the two materials to be spliced together.

[Means for solving problems]

The technical means of the present invention for realizing such an object is configured as follows.

First, two internally hollow suction pipes are prepared. Each of these pipes is provided with at least one flat surface along its length. These flat surfaces form adsorption surfaces for each pipe, and a large number of small holes are bored in rows along the length of the pipe. These suction pipes are held parallel to each other with their respective suction surfaces located in the same plane, and a gap as a slit is formed between the two pipes, penetrating from the suction surface side to the back. forced to remain. Both suction pipes are also closed at one end and connected at the other end to a source of negative air pressure.

[Effect]

Cutting a long film-like material into a required length using the technical means of the present invention as described above is realized as follows.

First, while aligning the planned cutting line of the long material with the slit between both suction pipes, stack the material on each suction surface of both pipes, and remove the negative force applied to the outside from the row of small holes on each surface. It is adsorbed to each surface using air pressure. The material is then captured individually and simultaneously by the suction surfaces of each pipe on both sides of the planned cutting line. Therefore, while inserting the tip of the cutting edge of a suitable cutter into the slit,
The cutter is moved along the slit. Then, the above-mentioned film-like material is caught on both sides of the planned cutting line and is cut along the planned cutting line. Note that the cut ends of the cut material on both sides of the cutting line continue to be captured as they are thereafter.

On the other hand, splicing of film-like materials is accomplished as follows.

First, the end of one of the film-like materials to be spliced was suctioned so as to straddle the suction surfaces of both pipes, and cut along the slit using an appropriate cutter in the same manner as when cutting above. After that, the cut ends are removed, and the end portion of the cut material still adsorbed is once removed from the suction pipe. Next, cut the end of the other film-like material in the same way and remove the scraps, then leave the end of the cut material adsorbed on one suction pipe.
The end portion of the former cut first is superimposed on the end portion of the latter, and is adsorbed again to the other suction pipe. Then, each end of the two materials to be spliced is captured individually, so that they can be kept correctly overlapping with the same width of overlap, and therefore can be spliced using a suitable adhesive tape. Make it happen easily.

In addition, each end of both film-like materials to be spliced is passed through the slit between both suction pipes to the back, and one end is passed through the suction surface of one suction pipe, and the other end is passed through the slit between the two suction pipes. When the two materials are stacked on the suction surface of the other suction pipe and adsorbed to each suction surface, the end portions of both materials are captured together and individually. Then, cut the end of each material that is pulled out from the slit to the rear using an appropriate cutter along the suction pipe.
If the sheets are cut at the same time, the ends of both materials will be trimmed correctly and parallel to each other. After that, each end of both materials is pulled out to the front side of the slit again, and while still being captured, one end is first rolled up close to the row of holes, and the other end is pulled under that part. By submerging the sections and then overlapping the ends of the former over the ends of the latter, the ends of the material will be overlapped with a more exact overlap than in the previous case. become.

[Effect of idea]

In the present invention as described above, the following effects can be expected.

First, when cutting a long film-like material to the required length, it is possible to capture both sides of the planned cutting line of the material at the same time and cut along the planned cutting line. Acquisition can be continued. Therefore, according to the present invention, it is possible to easily cut a long film-like material to a required length, and it is also possible to easily handle each cut end after cutting.

Also, when splicing film-like materials, while capturing each end of the two materials to be spliced,
They can be trimmed individually or simultaneously, and the trimmed edges can be overlapped while remaining individually captured. Therefore, according to the present invention, it is possible to correctly and easily perform overlapping splicing of film-like materials with an overlapping margin of the same width.

〔Example〕

Next, specific embodiments of the present invention will be described with reference to the drawings.

Two horizontal pipes 10 in Figures 1-4,
20 is a suction pipe whose cross section perpendicular to the length direction is rectangular, and the surface corresponding to one long side in the cross-sectional shape is the suction surface 11, 21, respectively.
In the center of each suction surface, a large number of small holes 12 to 22 are formed in a row along the length of the pipe. Each of these adsorption pipes 10, 20 is
The respective suction surfaces 11 and 21 are positioned in the same vertical plane and are held vertically parallel, leaving a horizontal slit 30 penetrating from the front to the rear on the suction surface side between both pipes. ing. In order to create such a slit 30, each of the illustrated suction pipes 10, 20 has brackets 1 at both ends.
3, 14 and 23, 24, insert machine screws 15, 16 or 2 into the left and right mounting boards 31, 32.
It is fixed at 5,26. Further, the left ends of both the suction pipes 10 and 20 in the illustrated example are closed by the brackets 13 and 23, and the right ends are also closed by the brackets 14 and 24, while at the same time an intake pipe passes through each of the brackets. 17, 27
They are each connected to a negative air pressure source 43 via control valves 41 and 42 that can also be opened to the atmosphere.

In addition, each adsorption pipe 10 in this example,
20 has a rectangular cross section as described above, but if it has one flat surface that can be used as the suction surfaces 11 and 21, the pipe 110 has a square cross section as shown in FIGS. 5a to 5c. , 120, the pipes 210, 220 having a triangular cross section, or the pipes 310, 320 having a semicircular cross section. however,
Considering the fact that each suction surface 111, 121, 211, 221 or 311, 321 is wide, the dimension perpendicular to the surface is small, and it is easy to support in parallel, the suction pipe 10 with a rectangular cross section, 2
0 is the best.

In the embodiment of FIGS. 1 to 4 constructed as described above, the long film-like material is cut to the required length as shown in FIG. 6.

First, while aligning the planned cutting line of the long material 50 with the slit 30 between both suction pipes 10 and 20, the material is stacked on each suction surface 11 and 21 of both pipes, and a small hole is formed on each surface. Negative air pressure is applied to the outside from each row of rows 12 and 22 to attract them to both of those surfaces. Then, the material 50 is captured individually and simultaneously by the suction surfaces 11 and 21 of each pipe on both sides of the planned cutting line.

Therefore, while inserting the cutting edge of a suitable cutter 60 into the slit 30, the cutter is moved along the slit. Then, the cutter-shaped material 50 is caught on both sides of the planned cutting line and cut along the planned cutting line, and each cut end 51, 5 on both sides of the cutting line is cut.
2 is still attached to the suction surfaces 11 and 2 even after cutting.
1 continues to be captured.

On the other hand, the overlapping splicing of film-like materials is performed using the first method shown in FIGS.
The second method shown in c.

In the first method, as shown in FIG. 7a, the end portion 71 of one of the film materials 70 to be spliced is suctioned so as to straddle the suction surfaces 11 and 21 of the suction pipes 10 and 20. Meanwhile, cut along the slit 30 with a cutter 60 to obtain a cut piece 72.
, and the remaining end portion 71 as shown in FIG.
Temporarily separate it from the suction surface 11. Next, the end portion 81 of the other film-like material 80 is suctioned so as to straddle the suction surfaces 11 and 21 of the suction pipes 10 and 20, and then cut along the slit 30 with the cutter 60, as shown in FIG. Cut and scrap 8
After removing the film material 2, the end portion 71 of the film-like material cut earlier is overlapped with the end portion 81, as shown in FIG. , to be sucked onto the suction surface 11 again. Then, the ends 71, 81 of both materials are overlapped with the overlap margin of the same width while being individually captured on the suction surfaces 11, 21, so that an appropriate adhesive tape 90 is applied to the ends 71, 81 of both materials. Paste them together to complete the overlapping joint of both materials.

The second method is possible only when the distance from each row of small holes 12, 22 in each suction pipe 10, 20 to the slit 30 is set larger than the short side length w of the rectangular cross section. .

First, as shown in FIG. 8a, each end portion 71, 81 of both materials 70, 80 to be spliced
are passed through the slit 30 between the suction pipes 10 and 20 from the front to the rear, and the parts near the ends of each material are stacked and suctioned onto the suction surfaces 11 and 21, respectively, and captured individually. Next, as shown in Figure b, the ends 71 and 81 of each material pulled out from the slit 30 to the rear are cut simultaneously along the back surface of each suction pipe 10 and 20 with an appropriate cutter 60 while keeping them overlapped with each other. , both ends of the material will be trimmed correctly and parallel to each other. Therefore, as shown in FIG.
1 from the slit 30 again, and while keeping each of them captured by the suction surfaces 11 and 21, first roll up one end 71 to near the row of small holes 12, and insert the other end under the said end. The end 81 is submerged so as to be aligned with the suction surface 11, and then the end 71 is placed on top of the end 81. Then each end 71, 81 of both materials
are still individually captured on the suction surfaces 11 and 21, and more accurately than in the first method,
Since they are overlapped with the same width overlap margin, by applying appropriate adhesive tapes 90 to the ends 71 and 81 of these two materials in the same manner as shown in FIG. 7c, the overlapping splicing of these two materials is completed.

Note that the width of the slit 30 in the embodiment may be fixedly set in advance in consideration of the thickness of the film-like materials 50 to 70, 80 and the blade thickness of the cutter 60. However, as shown in Figures 1 and 3,
Bracket 23 in one suction pipe 20,
24 is replaced with a long hole 28 as shown in the figure.
29, the width of the slit 30 can be changed at any time by moving the suction pipe 20 up and down within the length range of this elongated hole. Saya cutter 6
It can be made even more suitable for a blade thickness of 0.

In addition, each adsorption pipe 10, 2 in this embodiment
0 is held with the suction surfaces 11 and 21 located in the same vertical plane, but it is also possible to hold the suction surfaces 11 and 21 with the suction surfaces 11 and 21 facing upward in the same horizontal plane. good.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view showing an embodiment of the present invention, Fig. 2 is a plan view thereof, and Fig. 3 is the same as Fig. 1.
4 is a sectional view taken along the - line in FIG. 1, FIGS. FIGS. 7a to 7c are perspective views illustrating the process of cutting a long film-like material to the required length; FIGS. Figures 8a to 8c are perspective views sequentially illustrating the splicing operation according to the second method. 10,20...Rectangular pipe, 11,21...Adsorption surface, 12,22...Small hole, 13,14,23,
24... Bracket, 15, 16, 25, 26...
...Machine screw, 17, 27...Intake pipe, 28, 29...
... Long hole, 30 ... Slit, 31, 32 ... Mounting board, 41, 42 ... Control valve, 43 ... Negative air pressure source, 50 ... Long film-like material, 51,
52...Cut end of long film-like material, 60...
...Cutter, 70, 80...Film material to be next joined, 71, 81...End of film material to be next joined, 90...Adhesive tape.

Claims (1)

[Claims for Utility Model Registration] (1) Two internally hollow suction pipes, each of which is provided with at least one flat surface along its length as a suction surface; In each of these suction surfaces, a large number of small holes are bored in a row along the pipe length direction, and both of these suction pipes are arranged so that their respective suction surfaces are located in the same plane. A slit is left between the two pipes that penetrates from the suction surface side to the rear, and each suction pipe is closed at one end and closed at the other end. A film splicer characterized in that it is connected to a pneumatic source. (2) The film splicer according to claim 1 of the utility model registration, characterized in that the width of the slit between both suction pipes is variable. (3) Each of the two suction pipes is a rectangular pipe with a rectangular cross-sectional shape perpendicular to the length, and a flat surface corresponding to one long side of each cross-sectional shape is the suction surface of each, The film splicer according to claim 1, wherein the film splicer is opposed to each other through a slit at respective surfaces corresponding to the short sides adjacent to the long sides thereof. (4) In a suction pipe with a rectangular cross section, the suction surface is a flat surface corresponding to one long side of the cross section.
Utility model registration claims 1 and 3, characterized in that the distance from the small hole array to the slit on the suction surface is greater than the length of the short side facing the slit in the cross-sectional shape. Film splicer as described in section.