JPS58173021A - Coining roll device for continuous extruding machine - Google Patents

Abstract

PURPOSE:To lengthen the life of the shaft and its bearing and to enable easy increase of extruding speed by providing a through hole in the shaft that supports a coining roll and forcibly supplying air continuously through the hole. CONSTITUTION:For instance, a bearing which is so far fixed to the coining roll side is inserted into the U-shaped part of a supporting arm 10 from outside and fixed 18. The coining roll 6 itself is fixed to a hollow shaft 21 with a key, and the shaft 21 is supported by the bearing 18. Air or air mixed with automized lubricating oil is sent in forcibly through the shaft 21 from a proper air source to generate air cooling effect. In this instance, a dust guard cover 20 is provided for the bearing, and a through hole 22 is provided not to hinder the air current.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to continuous extruders for long lengths, and more particularly to coining rolls used in such extruders.

It consists of a movable wheel having an endless groove on its circumferential surface, and a fixed/knee block that engages with a part of the circumferential surface of this wheel to form an elongated transport path for material between it and the groove. An extruder is well known in which material is extruded from a die at a predetermined extrusion pressure by contact frictional resistance with a groove generated by rotation of a wheel.

In such extruders, coining rolls are used to force the material into a predetermined path. Conventional coining rolls have the problem of damage to the bearing part due to heat during extrusion, for example.

Therefore, it has the disadvantage of a relatively short lifespan. Furthermore, interest tends to accumulate in this coining roll,
In practice, it has major drawbacks, such as the inability to provide a stable supply of interest.

It is an object of the present invention to provide a coining roll for an extruder that can solve the problems of the conventional coining roll and can easily increase extrusion speed and maintain product quality.

According to the VC of the present invention, the problem of damage to parts of coining roll bearings is solved by air-cooling the parts, and the bearing parts are lubricated by spraying lubricant to solve the problem of material accumulation. .

The present invention will be explained in detail below with reference to embodiments shown in the drawings.

FIG. 1 is a schematic diagram of an extruder equipped with coining rolls and used to coat wire rods by extrusion.

In this extruder, movable wheels 4 are provided symmetrically with respect to the path of the wire rod 1 to be coated, and each movable roll 4
A coining roll 6 is provided against the movable roll 40 and the material 5 to be extruded, such as aluminum, is fed to the peripheral end surface of the movable roll 40, and due to the frictional resistance between the coining roll 6 and the peripheral end surface, the coining roll 6 is installed on the entire peripheral end surface of the coining roll 5, the coining roll 2 and the die 3. and extrude it from the die 3 so as to cover the wire moon 1 to provide the coating 7.

FIG. 2 is a plan view of a conventional coining roll assembly used in the extruder shown in FIG. , a support arm 10 that can move back and forth along the support block 9 to the handle 12.
The coining roll 6 is supported by a bearing 13 fixed to the roll side with respect to a solid shaft 14 provided at the U-shaped tip of the support arm 10.

In such a configuration, the bearing portion of the coining roll 6 will be damaged due to the frictional heat conducted throughout the material.

According to the present invention, in order to solve the drawbacks of the conventional coining roll assembly, this bearing section is forcedly air cooled.

FIG. 3 shows an embodiment of the present invention. In FIG. 3, the bearing that was conventionally fixed to the coining roll side is replaced with a bearing 18 that is fixed to the U-shaped portion of the support arm 10 from the outside. The coining roll 6 itself is keyed to a hollow shaft 21, and the hollow shaft 21 is supported by a bearing 18. Through this hollow shaft 21, the mist bearing forcibly sends air mixed with lubricant from an appropriate air source (not shown) to produce an air cooling effect. In addition, in this embodiment, a cover 20 is provided for the bearing part in order to obtain a dustproof effect.
The through holes 22 are provided so as not to obstruct the air flow.

FIG. 4 shows another embodiment of the invention.

In the actual case shown in FIG. 4, a radial through hole 23 is further provided in the center of the hollow/yaft 31 similar to that shown in FIG.

This hollow shaft 31 is fixed to a support arm 10 and supported by a bearing 13 fixed to the coining roll 6, as in the conventional device shown in FIG. In this embodiment, air flow containing lubricant is forcibly supplied to both sides of the U-shaped support arm 10 and blown out through the entire center hole 23 of the hollow shaft 31 to obtain a cooling and lubricating effect (14). There is.

According to the present invention, when the extruder is operated continuously, the life of the bearing of the conventional coining roll shown in Fig. 2 is about 1 to 2 days, but it is about 1 to 2 months, which is extremely significant. Effects can be obtained.

Therefore, the life of the coining roll assembly becomes extremely long, the extruder can be operated efficiently, and productivity is improved. Furthermore, stable supply of coating machines is possible, and product quality is stabilized.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of a conventional 1) outboard, FIG. 2 is a plan view of the coining roll device shown in FIG. 1, and FIGS. 3 and 4 are plan views of the coining roll according to the present invention. 1... Wire rod 2... Fixed cable 3
・Die 4...Roll 5...Coating material 6.16...Coining roll
7... Covered composite wire 8... Support stand 9... Support block 10...
...Support arm 11.12, Position adjustment device 13.18, Bearing 14, 21, 31, Shaft 20, Cover 22, Through hole 23,...
...Radial hole

Claims (1)

[Claims] 1. A through hole is provided in the shaft that pivotally supports the coining roll of a continuous extruder, and all air is forcedly and continuously supplied through the through hole, and the shaft and the shaft are pivotally supported by the VC. A coining roll device for a continuous extruder that features forced air cooling of the bearing. 2. The coining roll device according to claim 1, wherein atomized lubricant is mixed with the forcibly and continuously supplied air.