JPH04113915U - Film expanding device in sheet cutter - Google Patents

Abstract

(57) [Summary] [Purpose] To expand the folded part of the film provided on the SMC sheet. [Configuration] Located upstream of the pinch roll 12, the SMC
An air blowing device 19 is provided that blows out compressed air toward the left and right ends of the seat 1S.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a film expanding device for a sheet cutter.

0002

[Conventional technology]

Traditionally, it has been used as a molding material for manufacturing reinforced plastic products such as bathtubs. SMC (sheet molding compound) is widely used. This SM C is a liquid unsaturated polyester resin with reinforcing materials such as chopped strands and filling. It is made into a sheet by adding filler and thickener to lose its fluidity and reduce tackiness. have. Therefore, as shown in FIGS. 3 and 4, the SMC1 usually A film 2 made of polyethylene or the like having a width larger than the width of the SMC 1 on the front and bottom surfaces. 2, and fold the left and right ends of the films 2, 2 inward to form the folded part 2a. , 2a is formed on the SMC sheet 1S, and further this SMC sheet 1S is It is wound around the core tube 3 to form an SMC roll body 1R. As a result, SMC1 Make sure that the top and bottom surfaces of the container do not stick to each other, and that they do not leak out from both ends. protected.

0003 On the other hand, when manufacturing reinforced plastics, the SMC roll body 1R is made rotatable. Support and feed out the SMC sheet 1S, and peel off the films 2, 2 of the SMC sheet 1S. After releasing, cut SMC1 to the set length, and cut this cut SMC1a. A feeding sheet cutter 10 is used.

0004 First, to explain this sheet cutter 10, the sheet cutter 10 is as follows. As shown in FIG. 5, a cradle 1 rotatably supports the core tube 3 of the SMC roll body 1R. 1 and the SMC sheet 1S supported by this holder 11 and pulled out from above and below. A pair of pinch rolls 12, 12 that are inserted into the body and sent out downstream, and this pinch roll A winding roll 1 that winds up the peeled films 2, 2 on the feeding side of 12, 12 3, 13, and a cut to cut SMC1 in the left and right width direction (direction perpendicular to the paper surface of Fig. 5). It is composed of a cutting blade 14.

[0005] Moreover, between the above-mentioned pedestal 11 and the pinch rolls 12, 12, an SMC sheet 1S A guide roll 17 is provided that guides the connection table 16 onto the connection table 16.

[0006] A drive motor (not shown) is connected to the lower pinch roll 12. , a gear transmission mechanism (not shown) is disposed between the upper and lower pinch rolls 12, 12. As a result, the SMC sheet 1S is pinched by the upper and lower pinch rolls 12, 12. At the same time, they are rotated in opposite directions so that they are carried downstream. be taken out.

[0007] On the other hand, the cutting blade 14 is fixed to a holder 14a. To run along a guide beam (not shown) provided in the width direction of SMC1 Therefore, SMC1 can be cut to any length.

[0008] Note that 18 has a conveyance surface that is continuous with the connection table 16 of the sheet cutter 10. This is a sheet cutter conveyor provided so that the sheet cutter 10 cuts the sheet cutter 10. The cut SMC 1a cut by the blade 14 is conveyed to a predetermined position. So The sheet cutter conveyor 18 is connected to the pinch roll of the sheet cutter 10. The pinch roll operates in synchronization with the feeding of the SMC sheet 1S by 12 and 12. Convey the same distance as the amount of SMC sheet 1S fed out by 12 and 12. Rotation is controlled.

[0009]

[Problem that the idea aims to solve]

By the way, as mentioned above, the SMC sheet 1S has folded films 2 and 2. Because parts 2a and 2a are formed, peel off the films 2 and 2 as they are. Then, the folded parts 2a, 2a may get tangled and cannot be peeled off smoothly. In some cases, trouble may occur where SMC1 gets caught together with film 2. There was a problem.

0010 This invention was created in view of these problems, and it is a method that allows the film to be peeled off smoothly. Therefore, the folded part of the film provided on the SMC sheet can be expanded. The present invention provides a film expanding device for a sheet cutter that can be used in a sheet cutter.

[0011]

[Means to solve the problem]

This invention uses a pair of pinch rolls that sandwich and feed out the SMC sheet from above and below. at least the sheet cutter provided with the sheet cutter, located upstream of the pinch roll; An air blowing device is installed at the By blowing compressed air from an air blowing device towards the left and right ends of the SMC sheet. and simultaneously lift the folded part of the film on the SMC sheet and push it outward. It is characterized by being configured to expand and expand.

0012

[Effect]

When the SMC sheet is sandwiched between a pair of pinch rolls and fed out, the pinch rolls Towards the left and right ends of the SMC sheet before the SMC sheet is fed out by the roll. Compressed air is being blown out from the air blowing device.

[0013] As a result, the compressed air lifts the folded part of the film in the SMC sheet. At the same time, the lifted folded portion is pushed outward and expanded.

[0014]

【Example】

Embodiments of the present invention will be described below with reference to the drawings.

[0015] For convenience of explanation, the same reference numerals are given to the same members as those of the conventional example shown in FIG. , and detailed explanations thereof will be omitted as they are redundant.

[0016] In the sheet cutter 10A of the present invention, the An air blowing device 19 is arranged. This air blowing device 19 is formed into a bifurcated shape. The air nozzle 20 is equipped with ejection holes 20a, 20a, and the air nozzle 20 is It consists of a connected air pipe 21, and the air pipe 21 is equipped with a blower (not shown), etc. Air source is connected. Then, the air nozzle 20 ejects air from its ejection hole 20a. The released compressed air flows along the surface of the SMC sheet 1S toward its left and right ends. It is supported as appropriate.

[0017] With this configuration, the SMC pulled out from the SMC roll body 1R The sheet 1S is guided by a pair of pinch rolls 12, 12, and the sheet 1S is guided by the rotational drive of the pinch rolls 12, 12. The MC sheet 1S is fed out toward the downstream side.

[0018] At this time, prior to feeding the SMC sheet 1S to the downstream side, the air blowing device 1 When compressed air is supplied to the air nozzle 9, the SMC Compressed air is ejected along the surface of the sheet 1S toward its left and right ends. this As a result, both sides of the films 2, 2 are lifted up and outwards at the same time. By pushing it apart, the folded portion 2a of the film 2 can be expanded.

[0019]

[Effect of the idea]

As described above, according to the present invention, the SMC sheet can be fed out by pinch rolls. First, compressed air is ejected toward the left and right ends of the SMC sheet. By doing this, the folded part of the film in the SMC sheet can be reliably expanded. This makes it possible to perform the film peeling operation smoothly.

[Brief explanation of drawings]

FIG. 1 is a schematic side view showing an SMC sheet cutter of the present invention.

FIG. 2 is a perspective view showing a state in which a film is expanded by the air blowing device of the present invention.

FIG. 3 is a perspective view of an SMC roll body.

FIG. 4 is an enlarged view of part B in FIG. 3;

FIG. 5 is a schematic side view showing a conventional SMC sheet cutter.

[Explanation of symbols]

1 SMC 2 Film 1S SMC sheet 10A sheet cutter 12 Pinch roll 19 Air blowing device

──────────────────────────────────────────────── ─── Continuation of front page (72) Creator Masaru Shinohara Tsukishima Kikai 2-17-15 Tsukuda, Chuo-ku, Tokyo Inside the corporation (72) Creator Masashi Kojima Tsukishima Kikai 2-17-15 Tsukuda, Chuo-ku, Tokyo Inside the corporation

Claims (1)

[Scope of utility model registration request] 1. A sheet cutter comprising at least a pair of pinch rolls that pinch and feed out an SMC sheet from above and below, wherein an air blowing device is provided upstream of the pinch rolls, and prior to feeding out the SMC sheet by the pinch rolls. By blowing compressed air from the air blowing device towards the left and right ends of the SMC sheet,
1. A film expanding device for a sheet cutter, characterized in that the folded portion of the film in the sheet is lifted and simultaneously pushed outward and expanded.