JPS6327851Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a scraper cooling device for a rotating wheel type continuous metal extrusion device.

In general, a rotating wheel type continuous metal extrusion device moves a rod-shaped metal material, such as an aluminum rod, into an extrusion chamber consisting of a wheel having a circumferential groove, a die segment and an abutment that cover a part of the circumferential groove of the wheel. The product is continuously fed using the frictional force of the circumferential groove and extruded from the die hole provided in the die segment, and when manufacturing products continuously, it is used as a fixed tool in conjunction with the wheel circumferential groove. A metal fitting (aluminum) corresponding to the gap overflows from the gap with the abutment, adheres to the wheel circumferential groove, and is discharged.

Generally, in this type of extrusion equipment, in order to maintain product quality, the raw metal (aluminum) adhering to the wheel is scraped off with a scraper and discharged, but at this time, the aluminum raw metal comes out in a type of extrusion process, so it is at a high temperature. During scraping, the tip of the scraper and the scraped metal on the scraper adhere to the sliding surface, making it extremely difficult to remove.

The present invention was developed in view of the above, and prevents aluminum metal material from adhering to the scraper during scraping by effectively cooling the tip of the scraper and the sliding surface of the material metal to be scraped on the scraper. , the purpose is to ensure good discharge.

First, the outline of the scraper in the conventional rotary wheel type continuous metal extrusion apparatus shown in FIGS. 1 and 2 will be described, and then the present invention will be explained.

In the figure, reference numeral 2 denotes a base fixed to the main body frame 1 facing each other at a predetermined interval, and has a sliding surface formed in a U-shape in cross section. They are connected to each other. Reference numeral 4 denotes a slide that comes into sliding contact with both sliding surfaces of the base 2, and a feed screw 5 screwed into the presser plate 3 is attached to one end of the slide, and a feed screw 5 is installed at one end using known technical means, such as the thrust bearing 6 shown in the figure.
The other side is formed into a fork shape, and a tool rest 8 is rotatably attached to the inside thereof via a shaft 7 installed horizontally at right angles to the direction of movement of the slide 4. has been done.

A scraper 9 for the outer circumferential surface of the wheel and scrapers 10 for the outer circumferential surface of the wheel circumferential groove and both sides of the circumferential groove are attached to the upper and lower surfaces of the tool rest 8 parallel to the slide 4. 9a and 10a are sliding surfaces on which the scraped raw metal slides, and 9b and 10b are the back surfaces of the cutting edges of the scrapers 9 and 10. Further, in order to set these scrapers 9 and 10 in a fixed position, a slide key 12 which can be slid between it and a key press plate 11 attached to the slide 4 is provided. 13 is a handle for operating the feed screw 5; 14
is a wheel with a circumferential groove. In the scraper having such a configuration, the present invention is as shown in FIG.
As shown in FIG. 4, a hole a is drilled in the scraper 10 at approximately the center of its cross section from the back surface 10b of the cutting edge portion toward the blade base side, and the hole a is a conductive hole formed in the tool rest 8 and the shaft 7. It is connected to an air source 16 via a flexible hose 15 connected to the shaft 7 through b and c, and during operation, the cooling air supplied from the air source 16 is supplied to the outside through a hole a made in the back surface 10b of the blade edge of the scraper 10. The cutting edge of the scraper, the sliding surface of the scraped raw metal of the scraper, and the scraped raw metal are forcibly cooled to improve the cutting discharge of the high-temperature aluminum material attached to the wheel circumferential groove by the scraper. This is how it was done.

When the scraper is rotated and set in the cutting position as in this embodiment, the conductive holes b and c formed in the shaft 7 and the tool post 8 are communicated with each other by a well-known fluid joint with a ring groove. Further, a seal 17 is provided in the gap between the loose fitting parts (see FIG. 3).

However, if two types of scrapers are individually provided in a slide-propelled type,
As shown in the figure, a hole a made approximately in the center in the longitudinal direction of the scraper is connected with a hole a' perpendicular to this hole.
a' may be directly connected to an air source via the flexible hose 15.

With this configuration, when the extrusion device is in operation, the vicinity of the scraper cutting edge is effectively cooled by the cooling air supplied from the air source 16, and the high temperature adhering to the bottom and peripheral surface of the wheel circumferential groove is effectively cooled. This prevents aluminum material from adhering to or staying on the scraper when scraping.
The material metal can be discharged smoothly, and together with extending the life of the scraper, it is extremely effective in improving the productivity of rotating wheel type continuous metal extrusion equipment.

In particular, a hole is drilled from the back side of the scraper's blade edge toward the base of the scraper, and a cooling air source is connected to the base of the hole, so that almost the entire scraper is cooled by the cooling air and scraped away. The scraped raw metal can be prevented from adhering not only to the blade edge of the scraper but also to the sliding surface of the raw metal scraped by the scraper.

In addition, the cooling air jetted from the back of the scraper's cutting edge can cool not only the cutting edge but also the raw metal being scraped off, which cools the raw metal and eliminates its viscosity, making it easier to scrape off with the scraper. .

Furthermore, since the cooling air injection hole is provided on the back side of the scraper's cutting edge, the hole will not be blocked by the scraped metal material, allowing for stable operation.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a conventional device, Fig. 2 is a sectional view from ~' of Fig. 1, Fig. 3 is a plan view of main parts showing an embodiment of the present invention, Fig. 4 is a side view of main parts, and Fig. 4 is a side view of main parts. FIG. 5 is a plan view showing a modified embodiment, and FIG. 6 is a side view of FIG. 5. In the figure, 1...Body frame, 2...Base, 3...Press plate, 4...Slide, 5...Feed screw, 6...Slide bearing, 7...Shaft, 8...Turret, 9, 10...Scraper, 9a, 10a...
... Sliding surface (of the scraper), 9b, 10b ... Back side of the cutting edge, 11 ... Key holding plate, 12 ... Slide key, 13 ... Handle, 14 ... Wheel,
15...Flexible hose, 16...Air source,
17...Seal.

Claims (1)

[Scope of utility model registration request] In a scraper for scraping and discharging raw metal adhering to the wheel circumferential groove and the outer circumferential surface of both sides of the circumferential groove of a rotating wheel type continuous extrusion device, a hole is drilled from the back of the blade edge of the scraper toward the base of the scraper. A scraper cooling device for a rotating wheel type continuous metal extrusion device, characterized in that the blade end side of the hole is connected to a cooling air source.