JPH03198914A - Container cleaning device for extruding press device - Google Patents

Abstract

PURPOSE:To reduce the changing times of wearied wire-brushes and to improve the working efficiency by setting the cleaning means in freely movable between the billet extruding center position and the position of non-contacting when the container moves back and forth. CONSTITUTION:At the time when the rotary part 5 of the cleaning device is inserted in the inside wall surface of the container 46, by introducing the compressed air from the compressed air introducing pipe 8b for the rotary blade and rotating the rotary shaft 4b of the air grinder part 3, the rotation of wire- brush 4 begins. And at this same time, the proper volume of the compressed air is introduced from the introducing pipe 8a for the compressed air blowing pipe, and the oxidized scale which sticks at the inside wall surface of the container sleeve 46 and is stripped with the wire-brush 4 is blown successively with the compressed air and discharged.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cleaning device for an extrusion press device for removing oxide scale deposited inside a container of an extrusion press device.

[Prior Art] Conventionally, when extrusion pressing is performed using an extrusion press device,
With the container pressed against the die, the billet on the billet loader is loaded into the container by the stem at the tip of the ram. Then, the ram is further advanced and the billet is strongly pressed by the stem, and an extruded product having a predetermined shape is extruded from the billet from the die.

After extruding the billet, the container is slightly retreated by the container cylinder, and the main ram is retreated from the position where the day skirt is removed from the container.Next, the cutting blade of the cutting device is sent between the container and the die. Remaining billet on the front of the die (referred to as the day skirt)
Separate from.

Thereafter, the ram is retracted to remove the stem from the container, the next billet is inserted into the container, and the next cycle of extrusion press operation begins.

As these operations are repeated, oxide scale gradually accumulates on the inner wall of the container sleeve.

[Problems to be Solved by the Invention] However, in the conventional container cleaning device configured as described above, when the billet loaded in the container is pushed out by the stem, the billet is strongly pressed against the container sleeve. The oxide scale that had previously adhered to the inner wall of the container sleeve is peeled off and pushed onto the billet surface, and this oxide scale is further engulfed into the product, reducing product accuracy. The oxide scale was removed using a method. In other words, ■If an operator manually removes oxide scale,
The temperature of the inner wall of the container sleeve is as high as 450°C, which greatly reduces work efficiency.

■Furthermore, if a wire brush is attached to the outer peripheral surface of the rotary holder of an air grinder, the amount of wear is small, so the number of replacements of the wire brush increases.

It had such drawbacks.

[Means for Solving the Problems] In order to solve these problems, a container cleaning device that is located between the container and the stem and removes oxidized scale attached to the inner wall of the container sleeve includes:
A rotating shaft rotated by a rotating means is provided at the tip of the support arm, and a rotating holder is disposed at the tip of the rotating shaft, and the axis of the rotating holder is arranged on a side surface that intersects with and faces the axis of the rotating holder. A cleaning means having a length sufficient to reach the container sleeve when the holder rotates one rotation along the direction is fixed, and a driving source is connected to and disposed at the other end of the support arm, and the cleaning means is used to extrude the billet. It is configured so that it can be moved between the center position and a position where it does not come into contact with the container when it moves forward or backward.

[Operation] The stem is advanced to push the billet into the container loading hole and extrude it from the die to obtain the desired product. Thereafter, when a working fluid is introduced into the cylinder of the container cleaning device, the cleaning section is pushed from the standby state at the backward limit to the forward limit and moved to the center position via the support arm. Thereafter, compressed air is introduced into the rotary vane compressed air introduction pipe to drive the air grinder, rotate the wire brush, and move the container back and forth, thereby removing the oxidized scale attached to the inner wall of the container sleeve. At this time, the exfoliated oxide scale can be blown out and discharged by simultaneously blowing compressed air introduced from the compressed air blowing introduction pipe from the tip of the compressed air blowing pipe toward the inner wall of the container sleeve.

[Example] Figures 1 to 4 show an example of the container cleaning device according to the present invention, where Figure 1 is a sectional view taken along the extrusion direction, and Figure 2 is a cross-sectional view taken along the extrusion direction. 3 is an enlarged view of the main parts of the container cleaning device seen from ■-■ in FIG. 2, and FIG. If not installed, in addition,
FIG. 3(b) shows the state of brushing with a wire brush when compressed air is introduced into the compressed air introduction pipe for the rotating blade.
FIG. 4 shows a plan view of the container cleaning device viewed from IV-IT in FIG. 2, respectively.

This embodiment will be explained in detail using FIGS. 1 to 4.

In FIG. 1, reference numeral 10 indicates a machine base, on which an end platen 12 is fixedly installed, a cylinder mounting block 14 is installed on the other end side, and an extrusion cylinder 16 is fixedly installed on the cylinder mounting block 14. There is. The lower part of the end platen 12 on the side facing the extrusion cylinder 16 protrudes to form a die support part 20, and a guide slide 22 is installed on the die support part 20 so as to be slidable in the width direction of the machine. A die 24 is held on this guide slide 22.

The guide slide 22 is moved in the machine width direction by a cylinder (not shown) provided on the side of the end platen 12. It is possible to reciprocate between an extrusion operation position located on the back surface of the end platen 12 (the surface facing the extrusion cylinder 16) and a die exchange position where the die is removed from the back surface of the end platen 12.

A bracket 26 is fixed to the upper part of the end platen 12 on the side facing the extrusion cylinder 16, and a cutting device 28 is provided on the bracket 26. The cutting device 2
Reference numeral 8 is for cutting the day skirt of the die 24 to be described later and the product part, and includes a cutting blade 32 that is stroked in the vertical direction by a cylinder 30.

The end platen 12 and the cylinder mounting block 14 are connected by a column 34. A container guide (not shown) is provided in a portion of the column 34 on the end platen 12 side, and a container 38 is installed so as to be movable in the extrusion direction along the container guide.

A container cylinder (container moving cylinder) 40 is provided on the end platen 12 to move the container 38 in the extrusion direction or in the opposite direction. The tip of the piston rod 42 of the container cylinder 40 is connected to the container holder 38A, and the container cylinder 4
By moving the piston rod 42 forward and backward, the container holder 38A can be moved in the left-right direction in FIG. Note that the container 38 mounted on the container holder 38A has a billet loading hole 44, and a container sleeve 46 is mounted in the billet loading hole 44.

A billet loader 52 is provided on the extrusion cylinder 16 side of the container 38. The billet loader 52 has a drive unit M
(Illustrated clause) allows the stem to be evacuated from the stem advancement/retraction area.

The extrusion cylinder 16 is equipped with a ram 58.

A stem 60 is attached to the tip of the ram 58 via the head plate 56 and the attachment member 54. An oil reservoir tank 62 is provided above the cylinder 16, and the oil reservoir tank 62 and a hydraulic oil inlet 64 at the rear end of the cylinder 16 are connected through a prefill valve 66. A damper 68 is installed in this prefill valve 66. The introduction port 64 has a
A valve 70 for opening and closing is installed. This valve 70
is opened and closed by a cylinder 72.

On the side of the extrusion cylinder 16 is a side cylinder 78 (first
The piston rods 80 (only one of which is shown in FIG. 1) are fixed to the head plate 56.

Using such extrusion press equipment, the billet is made into stem 6
When the billet is pushed into the container 38 by the pusher 0 and then pushed forward with the stem 60 to forcefully press the billet (referred to as upsetting) and extruded from the die 24 to obtain the desired product, the oxide scale generated on the billet surface is transferred to the container sleeve 46. adheres to the inner surface of the The container cleaning device 211 of the present invention is used to remove this attached oxide scale. The configuration of the container cleaning device ll will be described below.

Container cleaning device 1 shown in FIGS. 1 to 4
The air grinder section 31 rotating section 5. Support arm 6, head section 7. It is composed of a double pipe section 9 and a cylinder 90. Furthermore, the rotating part 5 has a wire brush 4. Consisting of a wire brush holder 4a and a rotating shaft 4b, the air grinder section 3 includes an outer cylinder 3a and a compressed air blowing pipe support plate).
2a and a compressed air blowing pipe 2.

First, inside the outer cylinder 3a of the air grinder section 3.

A rotary shaft 4b is rotatably disposed coaxially with the axis of the outer cylinder 3a, with both ends supported by bearings (not shown). A rotary holder 4a is fixed to one end of the rotary shaft 4b, and a large number of long wire brushes 4 are implanted in both side surfaces of the rotary holder 4a that intersect with and face the axis, and the other end is free, so by rotating the rotating shaft 4b, the free end of the wire brush 4 expands due to centrifugal force as shown in FIGS. The inner wall of the container sleeve 46 is brushed to remove oxidized scale adhering to the inner wall of the container sleeve 46.

In addition, since the other end of the rotary shaft 4b is attached to the rotary vane force ζ (not shown) in the radius direction of the rotary shaft 4b, compressed air is introduced from the rotary vane compressed air introduction pipe 8b and the rotary vane is By spraying the liquid at an appropriate angle, the quadruple rotor 4a indicated by m1 rotates via the rotation shaft 4b.

In addition, the rotary blade compressed air introduction pipe 8b4 is disposed within the IN arm 6, and the compressed air introduced from the compressed air introduction pipe 8a is Air 11. When the outer cylinder 3a of the air grinder section 3 and the double pipe section 9 collide, the compressed air blowing tube support plate 2a is rubbed force<aaL, and furthermore, this compressed air blowing iE The compressed air is blown out toward the inner wall of the container sleeve 46 from the tip of the compressed air blowing pipe 2 which is fixed in a direction substantially perpendicular to the container sleeve 46. In addition, in this example,
The pressure m air blowing djL pipes 2 are spaced apart from the outer cylinder 3a of the air grinder section 3 at equal intervals, and are arranged in parallel to each other. Also.

The length of the wire brush 4 should be such that there is enough room even if the tip of the wire brush 4 comes into contact with the inner wall of the container sleeve 46 during rotation, and it is best to have a sufficient length. To reduce the number of times the wire brush 4 needs to be replaced due to wear.

Furthermore, the above-mentioned near grinding section 39 rotating section 5 and double pipe 9 are constructed by introducing a working fluid such as compressed air or pressure oil into the cylinder 904 as a driving source. It is movable via the support arm 6 from a working position shown by a solid line in FIG. 2 to a standby position shown by a chain line. That is, cylinder 9
A force (tUR) is applied to one end of the piston rod 91 to the piston disposed in engagement with the piston, and the other end of the piston rod 91 is supported by a bracket 92 protruding from and fixed to the middle of the support arm 6. rotatably supported by a shaft 92a;
%ru.

Further, a support arm 95 is disposed adjacent to the cylinder 90, and one end of an intermediate member 96 is fixed to the tip C of the support rod 95, and the other end of the intermediate member 96 and the support arm 6 The end portion of the contech 1 noning device is rotatably supported by a support shaft 93a.The operation of the contech 1 noning device configured as above will be explained.

First, after the extrusion to return the fin is completed, the container cleaning device 1 is operated as follows.

That is, the piston head'(llil
When a working fluid such as pressurized oil or compressed air is introduced, the piston rod 91 moves forward, and the support arm 6 is moved from the backward limit in the standby state shown by the chain line in FIG. 2 to the forward limit state shown by the solid line in FIG. The intervening device 1 moves.

Next, when the container holder 40 is actuated, the container 38 separates from the die 24 and begins to move backward. When the container 38 is pushed back and the rotating part 5 of the cleaning device [1] is forcefully inserted into the inner wall of the container sleeve 46, compressed air is introduced from the compressed air introduction pipe 8b for the rotating blades to the air grinder part. Rotation of the wire brush 4 is started by rotating the rotation shaft 4b of No. 3. At the same time, an appropriate amount of compressed air is also introduced from the compressed air blowing bone introduction pipe 8a, and the wire brush 4 removes the oxidized scale attached to the inner wall of the container sleeve 46 and sequentially blows it with compressed air. Discharge. When the container cleaning device 1 is held in this state of use and the container 38 is further retreated, the rotating section 5 moves toward the container 3B.
reaches the end face on the die 24 side. Furthermore, the container 38 is moved forward again to bring the container 38 and the dice 24 into contact with each other, and the rotating part 5 at the tip of the container cleaning device 1
When the container sleeve 46 is removed from the container 38, the removal work of the oxidized scale attached to the inner wall of the container sleeve 46 is completed. Thereafter, the supply of compressed air to the rotating blade compressed air introduction pipe 8b and the compressed air blowing introduction '18a is stopped. Then, by introducing the working fluid to the piston rod 91 side of the cylinder 90, the cleaning section 100 moves via the support arm 6 to the retracting limit of the standby state shown by the chain line in FIG.

When the removal of the oxide scale adhering to the inner wall of the container sleeve 46 is completed, the swing type billet loader 52 shown by the chain line in FIG. Extrusion work begins.

[Effects of the Invention] As is clear from the above explanation, a short wire brush is attached in the radial direction to the outer periphery of the rotary holder of the cleaning section, as in the past, by rotating it within the container sleeve. Because the oxide scale adhering to the face wall was being removed, the wire brush wore out and had to be replaced many times. However, according to the present invention, 1
Since sufficiently long wire brushes are attached to opposite sides of the rotary holder that intersect with the axial direction, the amount of wear on the wire brush increases, and furthermore, due to changes in the rotational speed of the rotary holder, the free end of the wire brush may be damaged. Since the centrifugal force changes, the spread angle of the tip of the wire brush changes. As a result, the degree of contact between the tip of the wire brush and the inner wall of the container sleeve differs, and by applying this principle, the number of times the wire brush needs to be replaced due to wear is significantly reduced, increasing work efficiency.

[Brief explanation of drawings]

1 to 4 show one embodiment of the container cleaning device according to the present invention, FIG. 1 is a sectional view taken along the extrusion direction, and FIG. 2 is a cross-sectional view taken along the extrusion direction, and FIG. 3 is an enlarged view of the main parts of the container cleaning device seen from ■-■ in FIG. 2, and FIG. 3(a) shows the compressed air introduced into the rotary blade compressed air introduction pipe. If not, in addition,
FIG. 3(b) shows the state of brushing with a wire brush while compressed air is introduced into the compressed air introduction pipe for the rotating blade.
FIG. 4 shows a plan view of the container cleaning device viewed from the V-IT in FIG. 2, respectively. l...Container cleaning device. 3... Air grinder section, 4... Wire brush, 4a... Rotating holder,
5... Rotating part, 6... Support arm. 8a... Compressed air blowing introduction pipe. 8b... Compressed air introduction pipe for rotating blades, 9...
Double pipe section, lO...Machine base, 12.
...End platen, 14...Cylinder mounting block. 16...Extrusion cylinder. 22...Gui slide, 24...Dice, 28...Cutting device. 34... Column, 38... Container, 44... Billet loading hole, 46... Container sleeve, 60... Stem, 90. ...Cylinder, 91 ...Piston rod, 100 ...Cleaning section.

Claims (1)

[Claims] In a container cleaning device that is located between a container and a stem and removes oxidized scale attached to the inner wall of a container sleeve, a rotating shaft that is rotated by a rotating means is provided at the tip of a support arm, and a rotating holder is further provided at the tip of the rotating shaft. and a cleaning means having a length sufficient to reach the container sleeve when the rotary holder is rotated is fixed along the axial direction of the rotary holder to the opposite side surface intersecting the axis of the rotary holder, while , an extrusion press characterized in that a drive source is connected and disposed at the other end of the support arm, and the cleaning means is provided movably between a billet extrusion center position and a position where it does not come into contact with the container when it moves back and forth. equipment container cleaning equipment.