JPH0482697A - Manufacture of thin sheet made of rubber or synthetic resin elastomer - Google Patents

Abstract

PURPOSE:To prevent a thin sheet from coiling around a band knife and a knife guide at the time when a rubber- or synthetic resin elastomer is plowed out into a sheet by providing saw tooth-like grooves on the knife guide portion abutting on the thin sheet parallel to the direction of rotation of a knife. CONSTITUTION:Saw tooth-like grooves are provided on the upper face of a knife band 6. Thus. a plowed-out thin sheet 4 does not coil around the upper face part 6A of a knife guide. The difference of elevation between a peak part 6C and a bottom part 6D of the saw tooth-like groove is suitably determined to be 1-5mm, and the spacing between the peak part 6C and the bottom part 6D is 2-6mm. In order to make the feeding and the takeup of the thin sheet 4 more faborable, a device for making to continuously adhere noncohesive powder to the peak parts 6C on the upper face part of the knife band 6 is provided.

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a thin sheet of rubber or synthetic resin elastomer.

[Conventional technology]

Conventionally, rubber or synthetic resin elastomer (100 to 20
0mm) X (1,000" 2,000+am)
A thin sheet of 2 to 10 m +++ thickness was divided using a rotating band knife with upper and lower knife guides on a conveyor.

[Problem that the invention seeks to solve]

When producing thin sheets by splitting rubber or synthetic resin elastomer raw material thinly with a rotating band knife, the thin sheets split by surface adhesion (exothermic melting ml) or static electricity at the time of splitting may be damaged by the band knife and knife guide. I can't wrap around it and split it.

[Means for solving problems]

The present invention was developed as a result of intensive research to solve the difficulty of splitting a rubber or synthetic resin elastomer when it is wrapped around a band knife and knife guide.

That is, in a method of continuously manufacturing thin plates of 2 to ioam using a rotating band knife made of rubber or synthetic resin elastomer, a sawtooth groove is formed in the knife guide portion that comes into contact with the thin plate parallel to the direction of rotation of the knife. This is a method for manufacturing a thin sheet of rubber or synthetic resin elastomer, characterized in that the thin sheet is provided in the direction, and the method further includes adhesion of the split sheets to each other when the split thin sheet is wound up, and feeding of the knife guide with the sheet. Knife guide rubber or synthetic # with serrated grooves for ease of use! The pointed part of the abutting part of the fatty elastomer thin plate is always kept in contact with non-adhesive powder to smooth the resonance of the thin plate cut with a band knife. Furthermore, in order to synchronize the winding of the divided thin sheet with the conveyor and to smoothen the winding of the divided rubber or synthetic resin elastomer thin sheet with the rotating band knife, a pull-out roller is installed on the upper surface of the thin sheet. , a drawer conveyor was installed on the bottom surface.

[Embodiment]

Figure III is a cross-sectional view of a conventional rubber or synthetic IMMI elastomer slotting device. An original fabric 2 of rubber or synthetic resin elastomer is placed on a belt conveyor 1. A press roller 3 is rotated in contact with the original fabric 2 by its own weight before the important starting point of the band knife. Knife guides 6A are attached to the upper and lower surfaces of the band knife 5 that cuts the thin sheet 4.
and 6B are connected in a U-shape, and the knife guide 6A
and 68, a band knife is attached so as not to come into contact with the knife guide.

12 (!I is a cross-sectional view showing one embodiment of the present invention. By providing a sawtooth groove on the upper surface of the conventional knife band 6, the cut thin sheet 4 is prevented from wrapping around the upper surface fJ6A of the knife guide. The height difference between the pointed head 6C and the trough 6D of the sawtooth groove is 1 to 5 mm, and the distance between the pointed head 6C and the trough 6D is suitably 2 to 6 mm.

To further improve the feeding and winding of the thin sheet, a device is provided to continuously apply non-adhesive powder (for example, talc inorganic powder) to the tip H portion 6C of the upper surface of the knife band (not shown). figure).

FIG. 3 is a sectional view showing another embodiment of the invention.

In order to synchronize and smooth the feeding and echoing of the thin sheet with the conveyor speed, a pull-out roller 7 is provided on the upper surface 4A of the thin sheet 4, and a pull-out conveyor 8 is provided in contact with the lower surface 4B of the thin sheet. To solve the problem of thin sheets getting tangled or wrapped around a knife guide part.

[Effect]

When the upper surface of the knife guide of the present invention, which is an improvement on the conventional slotting device, was machined with a saw-shaped groove and slotted,
I was able to drive without getting tangled with the thickness of 4-10. Also, 3mm
Regarding the thickness, smooth operation was possible by attaching talc to the top tip [t1] of the knife guide. With a thickness of 2 mm, when a pull-out roller and a pull-out conveyor were attached, the knife could be echoed without getting tangled with the knife guide.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a conventional slot splitting device, and FIG. 112 and M3rM are sectional views for explaining the present invention. 1. Belt conveyor 2, rubber or synthetic resin elastomer raw fabric 3, raw fabric pressing roller 4, rubber or synthetic resin elastomer thin sheet 4A,
Thin sheet upper surface portion 4B, thin sheet lower surface portion 5, band knife 6, knife guide 6A, knife guide upper surface portion 6B, knife guide lower surface portion 6C, knife guide upper surface portion pointed portion 5D, knife guide upper surface portion trough portion 7, drawer Roller 8, drawer conveyor patent applicant Toyo Rubber Industries, Ltd.

Claims (3)

[Claims] (1) In a method of continuously manufacturing thin sheets of 2 to 10 mm using a band knife that rotates a raw material of rubber or synthetic resin elastomer, a sawtooth groove is formed in the knife guide portion that comes into contact with the thin sheet in the direction of rotation of the knife. 1. A method for producing a thin sheet of rubber or synthetic resin elastomer, characterized in that the sheets are provided in parallel to each other. (2) The pointed part of the abutting part of the rubber or synthetic resin elastomer flake plate of the saw-shaped grooved knife guide is constantly kept in contact with non-adhesive powder to smooth the winding of the thin plate cut with a band knife. A method for producing a thin sheet of rubber or synthetic resin elastomer according to claim 1, characterized in that: (3) In order to smoothen the winding of the rubber or synthetic resin elastomer thin plate cut by a rotating band knife, a pull-out roller is provided on the upper surface of the thin sheet, and a pull-out conveyor is provided on the lower surface of the thin sheet. A method for producing a thin sheet of rubber or synthetic resin elastomer according to claim 1.