JPH0593613U - Wire drawing device - Google Patents

Abstract

(57) [Abstract] [Purpose] When the wire rod is cued, the wire rod is disconnected at the chuck section so that the capstan will not be damaged even if the chuck hits the capstan. Improve. [Structure] Pulling out the wire The surface of the chuck is molded with rubber or plastic and enclosed so that when the wire breaks, the chuck will not be scratched or damaged even if the chuck hits the capstan under an extreme load. ..

Description

[Detailed description of the device]

[0001]

[Target of device]

 The present invention relates to a pulling-out device that pulls out a wire in order to pull out the wire.

[0002]

[Prior Art]

 When drawing a wire rod or peeling the surface of the wire rod, the head of the wire rod was pulled out by using a mouth roll to make the tip thin and holding it in a pull-out chuck.

By the way, a thin wire rod having a diameter of about 5 mm or less is made into a seed wire by a dedicated mouthing device and set on a wire drawing machine. Passing 1 through the die 3 set in the die box 2, holding it in the chuck 4 and moving the capstan 5 in small steps, the wire was wound around the capstan to find the head.

The chuck has a structure that can be attached to and detached from the capstan.

Further, the chuck 4 uses an iron-based hardening tool that is harder than the wire material in order to prevent wear.

[0006]

[Problems of conventional technology]

 However, in the above-mentioned first cueing work of the conventional wire rod, since the tip of the wire rod is thin, the portion held in the chuck often loses the drawing stress of the wire drawing and is broken, and the chuck is often broken.

At this time, the chuck is disengaged from the wire rod and rebounds and strongly hits the retraction capstan 5. As mentioned above, the chuck is made of a hard material, and since it is angular, it is the biggest cause of scratching the capstan due to the impact when it hits the take-up capstan.

The capstan is generally made of chrome-plated or sprayed metal, but has a mirror-finished finish, which greatly affects the quality of the wire rod.

If the capstan is scratched, the drawn wire material is also scratched and the quality of the core wire is deteriorated, leading to defective scratches or a wire break accident when a thin wire is drawn. Therefore, it is necessary to polish the capstan and replace it with a spare part.

[0010]

[The purpose of the device]

 An object of the present invention is to prevent the scratch on the capstan even if the chuck is broken at the chuck portion during the indexing work and the chuck hits the capstan, and to improve the quality such as the defect of the wire rod.

[0011]

[Key points of the device]

 In other words, the gist of the present invention is that the surface of the wire drawing chuck is molded with rubber or plastic, and when the wire is broken, even if the chuck hits the capstan with an impact load, the capstan is not scratched or damaged. It has such a structure.

[0012]

[Example of device]

 FIG. 1 shows an embodiment of the structure of the drawer chuck of the present invention. The chuck is composed of a chuck body 6, a claw 7 for applying the wire 1, and a chain 9 for transmitting the force of the capstan. A rubber mold 8 is formed around the outer circumference of the chuck body 6 to form a single piece.

As the rubber, urethane rubber, which is strong against shock and is also excellent in abrasion resistance, is used. If the thickness of the molded urethane rubber is thin, the life is short, and if it is too thick, it is difficult to handle. Therefore, a thickness of about 5 to 6 mm is generally preferable.

Although urethane rubber is used for the chuck body in the above description, a material softer than a capstan, for example, a plastic material may be used instead of rubber. However, it is necessary to use one that will not be damaged by impact load.

The chain connecting the chuck and the capstan may be a wire or a nylon wire, and the metal chain may be made of a material softer than the capstan.

[0016]

[Effect of the device]

 As explained above, by using the drawer chuck according to the present invention, even if the chuck breaks when the head is pulled out, the capstan is not scratched at all, so the core wire blemishes due to the capstan are eliminated and the product quality is greatly improved. I was able to

The frequency of polishing the capstan and exchanging it with a spare part has been extended about 10 times as compared with the conventional one.

It has the above-mentioned effects, and its practical value is great.

[Brief description of drawings]

FIG. 1 is an explanatory view of an embodiment of the structure of the wire drawing chuck of the present invention.

FIG. 2 is a schematic diagram of a general wire drawing facility.

[Explanation of symbols]

 1 Wire Rod 2 Dice Box 3 Die 4 Drawing Chuck 5 Pulling Capstan 6 Chuck Body 7 Chuck Claw 8 Rubber Mold 9 Chain

Claims (1)

[Scope of utility model registration request] 1. A wire or wire drawing work or a work for peeling off the surface of the wire rod is provided with a chain or wire for thinning the tip of the first wire rod and pulling it out to a predetermined size with a die. A wire drawing device, wherein a drawing device (chuck) to be connected is configured by molding rubber or plastic around the outer periphery of the chuck.