JPS624164A - Sheet connecting method - Google Patents

Abstract

PURPOSE:To make an adhesive unnecessary in a method connecting sheet-like materials having some rigidity such as paper, unwoven fabric by boring U-shaped notches on the overlap section of two sheets and protruding one tongue piece through the other notch. CONSTITUTION:Edges of continuous sheets 1, 2 are overlapped each other to form an overlap section 3, and multiple U-shaped notches 4 penetrating the sheets 1, 2 are bored in the width direction of the sheets 1, 2 to form tongue pieces 5. Next, after the tongue piece 52 of the sheet 2 is protruded through the notch 41 of the sheet 1, the sheets 1, 2 are displaced to couple the tongue piece 52 with the notch 41. Then, the sheets 1, 2 reliably prevent the drift in the arrows 6-13 direction, particularly the drift in the arrows 6, 7 direction, and the paper is connected. According to this sheet connecting method, sheets can be connected simply and efficiently without using materials such as paste and adhesive tape, and the work can be done even by one person.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for interconnecting sheet-like materials having a certain degree of rigidity, such as paper or nonwoven fabric.

[Conventional technology]

To explain the conventional sheet connection method when connecting webs, in unwinding systems such as wine goo and super calendar, each time a web is processed, the next new web is connected to the previous surrounding web. However, this paper joining method includes methods such as gluing the sheets together or connecting them via double-sided adhesive tape.

[Problem that the invention seeks to solve]

However, at least two workers are required to carry out Gitsugi work efficiently using this method, and materials such as glue or adhesive tape must always be kept on hand, resulting in high labor and material costs. This was a problem as it would cost a considerable amount of money.

The present invention aims to solve the above-mentioned problems, and aims to provide a sheet joining method that allows sheets to be joined extremely easily without using adhesives such as glue or adhesive tape. It is.

[Means for solving problems]

The present invention, as a means for solving the above-mentioned problems,
The parts of the two sheets to be connected are overlapped, and a U-shaped notch is made in common in both sheets in the overlapping part to form a tongue piece, and the tongue piece of one sheet is connected to the cut of the other sheet. It is an object of the present invention to provide a sheet connecting method characterized in that, after the sheets are projected from the recess, both sheets are relatively shifted to engage the tongue piece of one sheet with the notch of the other sheet.

[For production]

By having the above-described structure, the sheets are mechanically connected by the tongue piece of one sheet and the notch of the other sheet, so that the sheets can be easily connected without using glue or other adhesives. can be connected to.

For example, when joining pieces of paper, by performing the method of the present invention with the edges as the intended connection parts, the joining can be done accurately.

〔Example〕

Embodiments of the present invention will be described using the drawings.

First, as shown in FIG. 1, the edges of the sheets 1.2 to be connected are overlapped to form an overlapping part 3, and the sheets 1.2 are communicated and penetrated through the overlapping part 3. A plurality of U-shaped notches 4 are made in the width direction of the sheet 1.2 to form a tongue piece 5.
As shown in FIG.
After projecting from the notch 41 of the sheet 1, as shown in FIG. 3, the sheet 1.2 is relatively shifted to engage the tongue piece 52 and the notch 41.

Then, the sheets 1 and 2 are accurately prevented from shifting in the directions of arrows 6 to 13, especially in the direction of arrows 6 and 7, and the papers are connected. Moreover, the deviation in the direction of arrows 14 and 15 is also slightly prevented by friction.

Note that the step of protruding the tongue piece 52 is preferably performed by the operation of the step of making the notch 4.

As described above, in the overlapping part 3, the tongue piece 5 is placed with the sheet 2 facing up.
Although the explanation was given using a method in which the sheet 1.2 is made to protrude downward, if the direction of the U-shaped notch 4 is taken into account, the sheet 1.2 can be reversed,
The tongue piece 52 can be made to protrude upward.

Next, an example of a punching device that performs a punching process in which the process of making the notch 4 and the process of protruding the tongue piece 52 will be described in the fourth to
This will be explained using Figure 6.

In FIG. 4, the die connecting the two support stands 21 and 22 has a fixed light-blade die 23 at its lower part and a movable punching-blade die 24 at its upper part.

The receiver blade die 23 is provided with a plurality of receiver blades 25. In the upper punching blade die 24, the receiver has the blade 2.
A punching blade 26 is provided corresponding to 5.

5 and 6 show specific examples of the receiving blade 25 and punching blade 26. A sheet presser 27 is attached to the punching blade die 24, and a spring 2 is attached to the sheet presser 27, which urges the sheet presser surface in a direction protruding from the punching blade 26.
8 and slidably arranged on the blade support 29 .

Therefore, in order to connect the sheets with this punching device, the receiver should be connected between the blade die 23 and the punching blade die 24. In 2), both ends of each sheet are inserted in an overlapping manner, and the overlapping portion 3 is punched by lowering the upper punching blade die 24 toward the receiving blade die 25'C.

To explain the punching process at this time in more detail, as the punching blade 26 descends, the overlapping portion 3 of the sheets 1.2 begins to be punched out gradually from the tip a of the punching blade 26. Then, when the punching progresses and reaches the base of the blade, the punching blade 26 stops descending any further. (This stopping mechanism is a system in which the descent of the punching blade die 24 itself can be controlled, and the receiver has a bottomed structure inside the blade 25 to prevent the punching blade 26 from descending more than necessary. (2) When the punching blade 26 stops descending, the tongue piece 5 is formed in the overlapped sheet, leaving an uncut portion at a portion corresponding to the root portion of the punching blade 26. In addition, the tongue piece 52 is bent somewhat with the uncut portion as a boundary, and the tip side of the tongue piece 52 is in a state where the receiver is pushed out toward the blade side, that is, a state where it protrudes from the notch 41. A plurality of such tongue pieces 5 are formed across the width direction of the paper.

The above specific example is a punching device in which the blade die 23 is installed in the lower part of the receiver and the punching blade die 24 is installed in the upper part. Of course, it is also possible to do this, and in relation to the position where the uncut portion of the tongue piece is provided, the blade die 23 of the receiver is fixed at the lower part, and the upper punching blade die 24 is made removable. It is also possible to switch the left and right sides as necessary. In this case, the uncut portion of the tongue will of course be formed on the opposite side from the front, so the paper sheets must be stacked so that the tongues engage.

〔Effect of the invention〕

According to the present invention, sheets can be connected easily and efficiently without using materials such as glue or adhesive tape, and the work can be easily performed by one person, resulting in significant savings in labor and material costs. There is an effect that it can be done.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a plan view with a cut made in the overlapping portion, Fig. 2 is a longitudinal sectional view with the tongue protruding, and Fig. 3 is a plan view of the sheet with the tongue protruding. FIG. 4 is a vertical sectional view of the connected state, FIG. 4 is a perspective view of an example of the punching device used to carry out the method of the present invention, and FIGS. 5 and 6 are side views of a part of the punching device, respectively. be. 1.2... Sheet, 3... Overlapping portion, 4... Notch, 5... Tongue piece, 6-15... Arrow, 21.22.
...Support stand, 23...Blade die, 24...
Punching blade die, 25... Receiving blade, 26... Punching blade, 27... Sheet holder, 28... Spring, 29...
Blade support.

Claims (1)

[Claims] 1. Overlap the parts of the two sheets that are scheduled to be connected, make a U-shaped cut in both sheets in the overlapped part to form a tongue piece, and connect the tongue piece of one sheet to the other sheet. A method for connecting sheets, comprising: protruding from a notch in the sheet, and then relatively shifting both sheets to engage a tongue piece in one sheet with a notch in the other sheet.