JP2601378Y2 - Sheet material clamping device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet material clamping device.

[0002]

2. Description of the Related Art Conventionally, as a clamping device used for cutting a sheet material such as a rubber sheet, as shown in FIG. 8, a plurality of pressing pieces are formed by forming slits at a predetermined pitch in a width direction of a sheet material a. A sheet material a is pressed against a receiving plate portion d by a holding plate c made of a spring steel thin plate formed with portions b... In some cases, the material a was configured to be cut.

[0003]

However, in the sheet material clamping apparatus as described above, the thickness of the sheet material a in the cutting direction and the change in the profile are changed by the pressing piece b of the pressing plate c.
Cannot be completely followed, and in particular, the edges on both sides of the sheet material a are incompletely pressed.

Therefore, when the cutter f starts to cut the material, the edge of the sheet material a is displaced due to the cutting resistance, and as shown in FIG.
Has become zigzag.

In view of the above, the present invention solves the above-mentioned problem, and can fix the sheet material so as not to be displaced in accordance with the profile thereof, and can also cut the sheet material linearly. The purpose is to provide.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, a sheet material clamping apparatus according to the present invention comprises an upper receiving plate, and an upper and lower plate which can be approached and separated from below. And a pressing portion for pressing the vicinity of the cut portion of the sheet material on the receiving plate portion, wherein the pressing portion is made of a cloth-like body curved in a mountain shape toward the sheet material side in a side view. A first pressing member and a second pressing member are provided, and the receiving plate portion is
A first receiving member having a horizontal receiving surface above the first pressing member;
A plate piece and a second receiving surface above the second pressing member
A second receiving plate, and the first receiving plate and the second
And between 2 receiving plate piece and the first pressing member between the second pressing member is obtained by attaching a movably cutter to cut.

[0007]

When the first pressing member and the second pressing member are brought closer to the receiving plate, the sheet material is pressed against the receiving plate. At this time, the first pressing member and the second pressing member press the sheet material with a substantially uniform force in the width direction while elastically deforming in accordance with the change in the thickness and profile of the sheet material.

[0008] Since the cutter is cut into the sheet material between the first pressing member and the second pressing member, both front and rear sides of the cut portion are fixed. For this reason, even if there is a cutting resistance by the cutter, displacement of the sheet material is prevented.

Since the first pressing member and the second pressing member are made of a cloth, the first pressing member and the second pressing member do not adhere to the sheet material. Therefore, when the first pressing member and the second pressing member are separated from the receiving plate portion after cutting, the first pressing member and the second pressing member naturally separate from the sheet material.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing embodiments.

FIG. 3 shows an embodiment of a sheet material clamping apparatus according to the present invention, which is an unvulcanized rubber sheet or a sheet such as a sheet obtained by sticking a rubber cloth on an unvulcanized rubber sheet. This is for cutting the material 2, and the upper receiving plate 1 and the receiving plate 1 can be freely approached to and separated from below, and the receiving plate 1 presses the vicinity of the cut portion of the sheet material 2. And a transport unit 4 for transporting the sheet material 2 as indicated by an arrow D below the receiving plate unit 1.

[0012] conveying means 4 comprises in order from the upstream side in the transport direction of the sheet material 2 to the downstream side, a first conveyor C ₁ and the second conveyor C ₂ and the third conveyor C _3, a. Furthermore, the second conveyor C ₂ between the receiving plate portion 1 and the pressing portion 3 is swingable deployed downward around the upstream roller (see FIG. 4).

The holding portion 3 is supported by the lifting / lowering means (not shown) including a cylinder, a linear guide, and the like so as to approach and separate from the receiving plate portion 1 (see FIGS. 4 and 3).

As shown in FIGS. 1 and 2, the pressing portion 3 is composed of a first pressing member 5 and a second pressing member made of a cloth-like body curved in a mountain shape toward the sheet material 2 in a side view. 6 is provided. Here, the cloth body is a thick general cloth, or
It refers to a rubber sheet for reinforcement with a cloth attached.

[0015] Specifically, the holding portion 3 is formed by an arrow A in FIG.
And a first pressing member 5 and a second pressing member 6 which are detachably attached to the holder member 7 disposed in parallel to the width direction of the sheet material 2 indicated by. The length W _{1 of} the first pressing member 5 and the second pressing member 6 and the length W ₃ of the receiving plate 1 are each set to be larger than the width W ₂ of the sheet material 2.

As shown in FIG. 1, the holder member 7 includes two base members 8 and two sheet members 2 projecting from the base plate 8 on the side of the receiving plate 1 (upper surface side) and parallel to the width direction. Mounting block parts 9a, 9b, and the mounting block parts 9a, 9b
And strip-shaped members 11... Which are detachably attached to the front and rear surfaces of the respective members by screw members 10.

The front and rear end portions of the first pressing member 5 and the second pressing member 6 are located between the front and rear surfaces of the mounting block portions 9a and 9b of the holder member 7 and the strip-shaped members 11. It is mounted in a clamping manner. If the screw members 10 and the strip-shaped members 11 are removed, the first pressing member 5 and the second pressing member 6 can be removed.
Can be easily replaced.

The receiving plate portion 1 includes an L-shaped first receiving plate piece 12 above the first pressing member 5 and an L-shaped second receiving plate piece above the second pressing member 6. 13 and the first of which
The leading edges of the horizontal portions of the receiving plate piece 12 and the second receiving plate piece 13 face each other in parallel to each other via a gap S at a predetermined interval.

That is, the first receiving member 5 is located above the first pressing member 5.
A horizontal receiving surface 18 (the lower surface of the horizontal portion) of the plate piece 12 is provided.
At the same time, the water of the second receiving plate piece 13 is placed above the second pressing member 6.
A flat receiving surface 19 (the lower surface of the horizontal portion) is provided. Soshi
The receiving surfaces 18, 19 of the first and second receiving plate pieces 12, 13 are respectively subjected to a non-adhesive treatment with a fluororesin or the like.

The first receiving plate piece 12 and the second receiving plate piece 13
Between, and between the first pressing member 5 and the second pressing member 6 ,
A cutter 14 is attached movably so as to cut (FIG. 5
And FIG. 6).

Specifically, the cutter 14 is inclined toward the second receiving plate piece 13 in a side view, and cuts from one end in the width direction of the sheet material 2 to the other end. It is attached to a moving means (not shown).

In order to use the sheet material clamping device, first, the sheet material 2 is conveyed below the receiving plate portion 1 by the conveying means 4 (see FIG. 3).

Thereafter, the conveyance of the sheet material 2 is stopped, and the second conveyor C ₂ at the center of the conveying means 4 is swung downward as shown in FIG. The sheet material 2 is pressed against the receiving plate portion 1 by the first pressing member 5 and the second pressing member 6 of the pressing portion 3.

As a result, as shown in FIGS. 5 and 6, the first pressing member 5 and the second pressing member 6 of the pressing portion 3 are formed by the elasticity of the material (cloth) and the thickness of the sheet material 2. It elastically deforms in response to changes in the profile. Therefore, before and after the cutting portion B of the sheet material 2, the first receiving plate piece 12 of the receiving plate portion 1 is moved.
And the first receiving plate piece 13 and the first holding portion 3 below it.
The pressing member 5 and the second pressing member 6 can be fixed (clamped) by pressing with substantially uniform force in the width direction.

Thereafter, the cutter 14 is advanced from one end in the width direction of the sheet material 2 to the other end, and the sheet material 2 is cut in the width direction. At this time, since the sheet material 2 is fixed as described above, the sheet material 2 is not displaced even if there is a cutting resistance by the cutter 14.

Therefore, as shown in FIG. 7, the cut surfaces 15, 15 formed in the sheet material 2 can be made linear when viewed in plan, and accurate cutting can be performed.

In the illustrated example, the sheet material 2 is composed of an inner liner 16 and chafers 17 and 17 provided along both ends of the inner liner 16 (see FIGS. 2 and 6). In addition to this, it is possible to cut linearly even an inner liner whose thickness gradually changes along the width direction as shown in FIG.

After cutting the sheet material 2 as described above, the holding portion 3 is lowered. At the time of this lowering, the pressing portion 3 naturally separates from the sheet material 2. That is, since the first pressing member 5 and the second pressing member 6 of the holding portion 3 are made of a cloth, the sheet material 2 is formed from the structural characteristics of the cloth and the like.
Does not stick to. Therefore, it is possible to prevent a feeding error when the sheet material 2 is subsequently conveyed to the downstream side.

The present invention is not limited to the above-described embodiment, and the design can be freely changed without departing from the gist of the present invention. For example, the cutter 14 is cut into the sheet material 2 obliquely from above. You are free to do so. That is,
In this case, the cutter 14 may have a width dimension larger than the width dimension W ₂ of the sheet material 2 (see FIG. 2) and have a cutting edge at the lower edge.

[0030]

[Effect of the Invention] The present invention is configured as described above.
The following effects are obtained.

The sheet material 2 can be cut straight and accurately without being affected by changes in the thickness or profile of the sheet material 2.

The first pressing member 5 of the holding section 3 and the second pressing member 5
Since the pressing member 6 is made of a cloth, the first pressing member 5 and the second pressing member 6 of the pressing portion 3 can be prevented from sticking to the sheet material 2. Therefore, it is possible to prevent a feeding error when the sheet material 2 is conveyed after cutting.

[Brief description of the drawings]

FIG. 1 is an enlarged side view of a main part of an embodiment of the present invention.

FIG. 2 is a cross-sectional front view of a main part partially omitted.

FIG. 3 is a simplified side view showing a sheet material conveyance state.

FIG. 4 is a simplified side view showing a clamp state.

FIG. 5 is an enlarged side view of a main part illustrating a use state.

FIG. 6 is an enlarged sectional front view of an essential part for explaining a use state.

FIG. 7 is a main part plan view for explaining a cutting state of a sheet material.

FIG. 8 is a perspective view of a conventional example.

FIG. 9 is a plan view of an essential part for explaining a state after cutting in a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Receiving plate part 2 Sheet material 3 Holding part 5 1st pressing member 6 2nd pressing member 14 Cutter B Cutting part

Claims (1)

(57) [Scope of request for utility model registration] And 1. A above the receiving plate portion 1, the lower the receiving receiving plate portion 1
And a pressing portion 3 for pressing near the cut portion B of the sheet material 2 on the receiving plate portion 1, and the pressing portion 3 is closer to the sheet material 2 in a side view. A first pressing member 5 and a second pressing member 6 each formed of a cloth-like body curved in a chevron shape, and the receiving plate portion 1 includes
First receiving plate having a horizontal receiving surface 18 above the pressing member 5
A piece 12 and a second receiving surface 19 above the second pressing member 6 are provided.
A second receiving plate piece 13 which is
Strip 12 and between a and the first pressing member 5 of the second receiving plate piece 13 between the second pressing member 6, the clamping of the sheet material, characterized in movably be annexed cutter 14 to cut apparatus.