KR20170054607A - Tread extruding die having multi-overlapping block die - Google Patents

Abstract

The present invention relates to an extrusion die for preventing the generation of static electricity in a tire, and more particularly, to an extrusion die for preventing the generation of static electricity in a tire, and more particularly, to a tire extrusion die for producing a tread extrudate for various silica (silica) having carbon black or an electrostatic rubber, The present invention relates to a tread extrusion die having a block die for mounting a multi-static rubber rubber to replace a piece block die having static rubbers of various sizes on a preformer die to produce various types of tread extrudates.
For this purpose, the present invention is characterized in that the rubber supplied through known insert channels is fed to both wing tread rubber channel (3a), cap tread rubber channel (3b) and under tread rubber channel (3c) A tread extrusion die having a die (1), wherein a cap tread block die (2a) for a carbon black rubber or a silica cap tread block die (2) for a center electrostatic rubber is provided in a cap tread mounting groove (4) of the preformer die (2b) or an off-center silica cap tread block die (2c) for electrostatic chopping are alternately mounted.

Description

[0001] Tread extruding die having a multi-static rubber mounting block die [0002]

The present invention relates to an extrusion die for preventing the generation of static electricity in a tire, and more particularly, to an extrusion die for preventing the generation of static electricity in a tire, and more particularly, to a tire extrusion die for producing a tread extrudate for various silica (silica) having carbon black or an electrostatic rubber, The present invention relates to a tread extrusion die having a block die for mounting a multi-static rubber rubber to replace a piece block die having static rubbers of various sizes on a preformer die to produce various types of tread extrudates.

The tread directly contacting with the road surface during tire manufacturing is structured such that the carbon black is reinforced or a large amount of silica is adopted. In this case, the tire reinforced with carbon black, which is electronically provided, Have significantly higher electrical conductivity or more resistance to electrical flow.

The latter tires, which have the advantage of improving the braking performance on the road surface and reducing the rolling resistance characteristic of the low fuel consumption characteristics, can not discharge the static electricity generated from the vehicle to the outside through the ground because silica is a nonconductive material. Because of the disadvantages, the silica-coated tires secure the conductivity by injecting the static rubber for the static discharge.

Thus, conventionally, when a tire tread having carbon black or a tire rubber tread made of silica rubber is extruded in an extrusion process, the tread is extruded by using an extrusion die suitable for each of them. Particularly, a tread extrusion die for extruding silica rubber Since the preformer die, which is a weight extrusion die, is replaced with an extrusion die in accordance with various tread sizes according to the position of the electrostatic rubber, the operation time is naturally increased and a loss time of the work is generated In addition, when replacing the preformer dies of various sizes up to about 100 ° C, there was a possibility that the work load of the operator would be increased and burning due to high temperature might occur.

Korean Patent No. 10-1405064 (2014.06.02.) Korean Patent No. 10-1016691 (Feb. 15, 2011)

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a tread extruded product having a rubber rubber for carbon black or a silica rubber filled with an electrostatic rubber, It is an object of the present invention to provide a tread extrusion die having a block die for mounting a multi-static rubber rubber which can be replaced by various types of static rubber piece blocks or carbon black rubber piece blocks to extrude tread extrudates of various sizes.

The present invention for achieving the above object is achieved by providing a preformer die in which the rubbers supplied through known insert channels are supplied to both wing tread rubber channels, cap tread rubber channels and under tread rubber channels and joined with tread extrudates A tread extrusion die, comprising: a cap tread mounting die for a carbon black tire; a cap tread block die for a carbon black tire; and a silica cap tread block die for an electrostatic chopper or a silica cap tread block die for an off- As shown in FIG.

Such a tread extrusion die having a block die for mounting a multi-static rubber according to the present invention can be used for producing a tread extrudate of a rubber for carbon black or a silica rubber having various static rubber shapes and various tread extrudates , It is possible to shorten the working time, to improve the work efficiency of the worker, and to protect the worker from injury such as an image during the replacement work.

1 is a perspective view of a tire tread extrusion die according to the present invention,
2 (A), 2 (B) and 2 (C) show various cap tread block dies applied to the present invention, wherein (A) is a block die for a carbon black rubber, , (C) are drawings of an off-center static electrostatic silica block die,
3 (D), 3 (D), 3 (E) and 3 (F) are cross-sectional views of various extruded tread extruded using the present invention, Silica-tread extrudates, and (F) are silica-tread extruded drawings for an off-center static electric motor.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited thereto, and various modifications may be made without departing from the technical idea of the present invention.

FIG. 1 is an exploded perspective view of a tread extrusion die according to the present invention. FIG. 1 is a cross-sectional view of a tread extrusion die according to the present invention, in which a carbon block rubber die tread block die 2a having various structures in a preformer die 1 or a silica cap tread block die 2b for a center static electricity rubber, Or off-center electrostatic bracket cap tread block dice 2c, respectively, can be selectively replaced.

The present invention is characterized in that the rubber supplied through known insert channels is fed to both wing tread rubber channel (3a), cap tread rubber channel (3b) and under tread rubber channel (3c) 1, a cap tread block die 2a for a carbon black rubber or a silica cap tread block die 2b for a center static electricity rubber is provided in a cap tread mounting groove 4 of the preformer die 1, ) Or off-center static tester silica cap tread block dies 2c are interchangeably mounted.

As shown in Fig. 2, the outer circumferential shapes of the cap tread block die 2a for the carbon black rubber, the silica block die 2b for the center static electricity rubber, and the silica block die 2c for the off- These are integrally joined or separated through fastening holes 5 by fastening means such as bolts inserted into the cap tread mounting grooves 4 of the preformer die 1, .

As described above, the cap tread mounting grooves 4 of one preformer die 1 are provided with the cap tread block die 2a for the carbon black rubber or the silica cap tread block die 2b for the center static electricity rubber, ) Or an off-center silica cap tread block die (2c) for static blasting can be used in place of the tread extrudate of various specifications to be produced.

Therefore, as shown in Fig. 3 (D), the tread extrudate for carbon black rubber (Fig. 3 (D)) in which the wing tread 7b is attached to both sides of the cap tread 7a and the under tread 7c is disposed below the cap tread 7a 6A, the cap tread block die 2a for the carbon black rubber is mounted on the cap tread mounting groove 4 of the preformer die 1 and the electrostatic rubber 8 (FIG. 3 The silica cap tread block die 2b for the center electrostatic shield is formed as an offset center having the electrostatic rubber 8 biased to one side as shown in Fig. 3 (F) When manufacturing the silica tread extrudate (6c) for static electricity rubber, the silica cap tread block die (2c) for off-center static electricity rubber is respectively replaced, thereby shortening the work time required for replacing the tread extrudate Lightweight, lightweight block By mounting the replacing only is to alleviate the workload of the operator.

1: Preformer die,
2a: Cap tread block die for carbon black rubber,
2b: Silica cap for static static rubber center tread block die,
2c: Off-center Silica cap for static charge rubber Tread block die,
3a: Wing tread rubber channel,
3b: cap tread rubber channel,
3c: under tread rubber channel,
4: Cap tread mounting groove,
5: fastening hole,
6a: Tread extrudate for carbon black rubber,
6b: Silica tread extrudate for center electrostatic rubber,
6c; Off-Center Static Electricity Silica Tread Extrusion for Rubber,
7a: cap tread,
7b: Wing tread,
7c: under-tread,
8: Chimney rubber.

Claims (3)

And a preformer die 1 for supplying the rubber supplied through the insert channels to the wing tread rubber channel 3a, the cap tread rubber channel 3b and the under tread rubber channel 3c, In a tread extrusion die,
A cap tread block die 2a for a carbon black rubber or a silica cap tread block die 2b for a center static electricity rubber or an off-center static electricity gauge 2b is attached to the cap tread mounting groove 4 of the preformer die 1. [ Characterized in that the dental silica cap tread block dies (2c) are alternatively mounted. The method according to claim 1,
The outer circumferential shapes of the cap tread block die 2a for the carbon black rubber and the silica block die 2b for the center static electricity rubber and the silica block die 2c for the off center static electricity rubber are all formed in the same shape Tread extrusion die with block die for electrostatic rubber mounting. The method according to claim 1,
The carbon black rubber tread block die 2a and the center static tester silica block die 2b and the off center static tester silica block dice 2c are connected to the cap tread mounting grooves 4 , Respectively, and are integrally joined or separated through fastening holes (5) using fastening means such as bolts. ≪ Desc / Clms Page number 13 >

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