JPH02241612A - Metallic chips removing method of rotary wheel type extruder - Google Patents

Abstract

PURPOSE:To realize personal safety and lavor saving by revolving a rotary cutting edge provided in contact with the surface of a rotary wheel centered at the parallel axis to the rotary shaft. CONSTITUTION:The rotary wheel 1 in which an endless grooved 2 is grooved and a fixing block 3 in which the choking wall 4 of the groove 2 is projected at the rear in sliding contact with the peripheral face of a part of that wheel are provided on a rotary wheel type extruder. And a extruding chamber for introducing an extruding wire rod (a) between the groove 2 and the block 3 is formed. Then, the rotary cutting edge 9 provided in contact with the surface of the rotary wheel 1 is revolved centered at the parallel axis of the rotary shaft of the rotary wheel 1. Metallic chips adhered on the face of the rotary wheel are scraped off by the rotary cutting edge with plural blades. Thus, this method can contribute to the efficient recovery of wastes.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention is directed to the surface of a rotating wheel of a so-called conform extruder, which is a rotating wheel type extruder used for profile extrusion, vibrator extrusion, and composite wire extrusion of metal materials. This invention relates to an improved method for removing metal debris.

(Prior Art) FIGS. 7 and 8 show a concrete example of a method for removing metal scraps and a processing apparatus therefor in an example of pipe extrusion using a conventional rotary wheel type extruder.

A is an extrusion wire rod made of, for example, Al rough wire.

1 has one or more endless grooves 2 (hereinafter referred to as
3 is a fixed block having a blocking wall 4 of the groove 2 protruding from the rear thereof.

The fixed block 3 is in sliding contact with the groove 2 of the rotating wheel 1,
An introduction path for the extrusion wire a is formed between the groove 2 and the groove 2.

A coining roll 6 presses the extrusion wire material a into the groove 2 of the rotary wheel 1, and is fixed to the frame via a spring or the like, for example.

A die 5 for extruding the extrusion wire a is attached to the fixed block 3, and the extrusion wire a is extruded from the die 5 by a mandrel 7.

However, when such wire rods are extruded, metal debris is usually generated between the fixed block surface with a protruding block wall in the groove on the outer periphery of the rotating wheel and the rotating wheel surface, and metal debris is generated on the rotating wheel surface. There is a tendency for metal debris to adhere, and conventionally considered removal methods and devices for removing this metal debris are as shown in FIGS. 7 and 8.

That is, FIG. 8 shows a perspective view of the removed metal scraps, and FIG. 9 shows a cross-sectional view of the adhesion of the metal scraps d to the surface of the rotating wheel 1.

8 is a fixed blade provided as a metal scrap removal device;
b shows metal debris removed by this fixed blade.

(Problem B to be Solved by the Invention) Conventionally, as described above, since the fixed blade is used to remove metal debris attached to the surface of the rotating wheel, the removed metal debris is as shown in Fig. 8. Then, it becomes an amorphous, stick-like mass, and it is difficult to process it with a machine, so it has to be done manually.

However, this metal scrap has a high temperature of 500°C or more, is mainly rod-shaped, and is hard and requires a large amount of force, which poses a safety problem for workers.

Furthermore, since this metal scrap comes out in an irregular shape, it sometimes gets entangled with peripheral equipment or the conforming machine itself, causing damage to the main machine, and so on.

(Means for Solving the Problem) The present inventor has solved the problems of the conventional technology by providing a rotary cutting blade having a plurality of blades in place of the conventional fixed blade in a rotary wheel type extruder. It is possible to reliably remove metal debris generated on the rotating wheel surface, and
The present invention has been completed, which can save labor and improve safety.

That is, the present invention provides; (1) a rotating wheel having one or more endless grooves on its outer circumferential surface; a fixed block having a blocking wall for the grooves protruding from a rear part of the rotating wheel that makes sliding contact with a portion of the outer circumferential surface; In a rotating wheel type extruder consisting essentially of a groove and an extrusion chamber into which an extruded wire is introduced between the bronc, the rotating cutting blade provided in contact with the surface of the rotating wheel,
Provided is a metal scrap removal device, characterized in that the device has a contour that matches the surface of a rotating wheel and the shape of a groove, and is rotated about an axis parallel to the axis of rotation of the rotating wheel, and (1) The distance between the rotating wheel and the blade can be adjusted.
1. A rotating wheel type extruder according to claim (1), wherein the fixed block has a closing wall protruding into one or more endless grooves provided on the outer periphery of the rotating wheel. A rotary cutting blade having a plurality of blades is driven to remove metal debris that comes out from between the surface and the driving rotating wheel surface and adheres to the rotating wheel surface.
This is a method for removing metal debris, which is characterized by rotating the wheel and scraping it off as small pieces from the surface of the rotating wheel.

The present invention will be specifically explained based on FIGS. 1 to 8.

That is, in FIG. 1, the extrusion wire a is pressed against the groove 2 of the rotary wheel 1 rotating by the coining roll 6, and is pushed into the introduction line and further into the fixed block 3 by the frictional force between it and the groove 2. It is extruded as a wire rod.

In the present invention, instead of the fixed blade 8 in the conventional metal scrap removal device shown in FIGS. 7 and 8, a rotary cutting blade 9 having a plurality of blades 10 is rotated as shown in FIG. 2
As shown in the figure, the metal scraps d adhering to the surface of the rotating wheel 1 are cut into thin pieces such as metal pieces 11.

In this way, the metal id attached to the surface of the rotating wheel 1 is easily and continuously scraped off by the rotating cutting blade 9 into metal pieces 11.

Furthermore, the metal scrap removal device of the present invention will be explained based on the drawings.

FIG. 1 shows the removal of metal debris in a single-wheel conform extruder, and FIG. 2 shows the removal of metal debris in a multiple, especially two-wheel conform extruder.

Here, the cutting edge 10 of the rotary cutting blade 9 is rotated about an axis parallel to the rotation axis of the rotary wheel 1, and so as to be in sliding contact with the surface of the rotary wheel 1 and the shape of the groove 2. It is configured.

As shown in FIG. 3, a plurality of cutting edges 10 may be provided regularly, but the invention is not limited thereto, and depending on the adhesion status of metal scraps d on the surface of the rotating wheel 1, the cutting edges 10 may be disposed regularly. They may be installed irregularly by adjusting the intervals as appropriate.

Further, the shape of the cutting edge is not limited as long as it can remove metal debris d adhering to the surface of the rotating wheel 1, but generally a flat blade can be used as shown in FIG. 6. In particular, as shown in Figures 4 and 5, if the shape of the groove 2 is matched, the groove 2 generated at the start of operation of the conform extruder
It is possible to remove metal debris adhering to the inside of the machine, and it becomes possible to reliably supply the extruded wire rod a at the start of operation, thereby making it possible to start up the machine in a short time.

In addition, in this metal scrap removal device, by adding a configuration for appropriately adjusting the distance between the surface of the rotating wheel 1 and the cutting edge 10, the thickness of the metal layer remaining on the surface of the rotating wheel 1 can be changed. When operating the conform extruder, a minimum amount of metal scrap is obtained, with no contact between the surface of the rotating wheel 1 and the fixed block 3, allowing economical operation of the conform.

The metal debris removal device and removal method of the present invention is not limited to a single rotation wheel (Fig. 1) as a conform, but can also be suitably applied to a multi-rotation wheel of 2 rotation wheels (Fig. 2) or more. .

In addition, in the metal scrap removal device and removal method of the present invention, even if the number of grooves 2 provided on the rotating wheel is one or more, it is sufficient to match the shape of the cutting edge 10. The number can be arbitrarily determined depending on the operating situation.

(Effects of the Invention) As explained above, the metal debris removal device and method of the present invention can improve human safety and save labor.

Furthermore, since the metal pieces are scraped off in the form of small pieces, it becomes easy to automate the collection of metal scraps, and the metal pieces can be easily compressed, contributing to improved efficiency in scrap collection.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the removal of metal debris in a single wheel conform. FIG. 2 is a cross-sectional diagram illustrating the removal of metal debris in a plurality of, particularly two-wheel, conforms; FIG. 3 is a schematic diagram illustrating the structure of a rotary cutting blade used in the apparatus and method of the present invention. 4-5 show a partial cross-sectional view and a perspective view of a rotary cutting blade adapted to the surface of a rotary wheel and the shape of a groove. FIG. 6 shows a perspective view of a rotary cutting blade having a flat cutting edge. FIGS. 7 and 8 are schematic diagrams showing a specific example of a method for removing metal scraps and a processing apparatus therefor in an example of vibrator extrusion using a conventional rotary wheel type extruder. Fig. 9 is a cross-sectional view showing the adhesion state of metal chips.Rotating wheel 2: Endless groove 3: Fixed bronch 4: Closing wall 5: Die 6: Coining roll 7: Mandrel 8: Fixed blade 9: Rotating cutting blade 10: Cutting edge 11: Metal piece a: Wire rod for extrusion b: Removed metal scraps C: Element wire d: Adhering metal scraps Figure 4 Figure 5 Figure 6 Figure 2 Figure 7 Figure 8

Claims (4)

[Claims] (1) A rotary wheel having one or more endless grooves on its outer circumferential surface, a fixed block having a closing wall of the groove protruding from the rear part of the rotary wheel that makes sliding contact with a portion of the outer circumferential surface, and the groove and the block. and an extrusion chamber into which an extruded wire is introduced, the rotary cutting blade provided in contact with the surface of the rotary wheel has an axis parallel to the rotation axis of the rotary wheel. A metal scrap removal device characterized by being rotated around a center. (2) Claim (1) characterized in that the rotary cutting blade has a contour that matches the shape of the rotary wheel surface and the groove.
) The metal scrap removal device described in ). (3) The metal scrap removing device according to claim (1), wherein the distance between the rotary wheel and the blade is adjustable. (4) In the rotary wheel type extruder according to claim (1), the rotary wheel is driven by a fixed block surface having a closing wall protruding into one or more endless grooves provided on the outer periphery of the rotary wheel. A rotary cutting blade having a plurality of blades is driven and rotated to scrape off metal debris that comes out from between the surfaces and adheres to the surface of the rotary wheel as small pieces from the surface of the rotary wheel. How to remove debris.