KR890003346Y1 - Workpiece separating device of extruding die - Google Patents

Abstract

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Description

EJECT device for extrusion mold

1 to 3 is a partial longitudinal cross-sectional view of the extrusion mold showing the configuration and operation of the device of the present invention,

1 is an explanatory diagram showing a state before a machining template and a punch are operated.

2 is an explanatory diagram showing a state in which the movable template and the punch are lowered and the workpiece is extruded.

3 is an explanatory view showing a state in which a workpiece is separated as the movable template and the punch rise.

* Explanation of symbols for main parts of the drawings

5: Movable plate 5b, 5b ': Number of axes

5a, 5a ': Insertion hole 8: Extrusion die

10,11: eject pin 12: eject plate

15,15 ': Operating lever 15a, 15a': Contact piece

15b, 15b ': Raised protrusion 16,16': Shaft pin

17,17 ': spring 17a, 17a': tanji pin

18,18 ': Guide

The present invention relates to a workpiece separation device of an extruded mold that can easily pull out the pin-shaped workpiece formed by the extrusion hole of the extrusion die, in particular interlocking the ejector mill plate by the lifting operation of the operating lever installed on the movable die The present invention relates to an apparatus for separating a workpiece of an extrusion die, which facilitates separation of a workpiece by pushing the ejection pin with a strong force to push a processing portion of the pin-shaped die tightly formed into an extrusion hole of a molding die.

Extrusion molds which are generally used are provided with a separator for firstly separating a workpiece formed on the extrusion die from the die while the movable die and the extrusion punch are raised. Such a conventional separator is usually used in a die holder. The movable die and the punch are lifted up and compressed at the same time through the return spring having a predetermined elasticity between the ejecting mill plate having several mill pins and eject pins inserted therein and the support plate of the die bed installed under the eject mill plate. It is configured to raise the descending ejector plate only by the restoring elasticity of the spring so that the eject pins installed on the compact plate separate the extruded workpiece from the extrusion die by a certain distance.

Therefore, in the case of forming a pin-shaped workpiece or a machined part on a soft workpiece using an extruded mold having such a conventional separator, the pin-shaped workpiece formed in the extrusion hole of the die is tightly fixed to the inner circumferential surface of the extrusion hole. Therefore, the difficulty of the work that the separation of the workpiece is impossible only by the lift force of the eject pin by the restoring elasticity of the return spring as described above was caused.

The present invention is devised to solve the problems of the conventional separation device, by installing a spring-loaded operation lever on both sides of the movable plate which is elevated in accordance with the operation of the press ram at the bottom of these as the operation lever is lowered The formed locking projection is fixed to the lower end of the eject mill plate, and each operating lever forms a contact piece in contact with the guide piece of the extrusion die so that the operating distance of the operating lever for raising the eject mill plate can be set, thereby raising the movable mold plate. When it is possible to raise the ejector end plate together by a certain distance, and the eject pin receiving the lift force to directly push the processing unit to easily separate the workpiece, which will be described in detail with the accompanying drawings. As follows.

As shown in FIG. 1, the punch 2 is fixedly installed at the center of the punch holder 1 connected to the upper press ram (not shown) and is installed at both sides of the punch holder 1. The lower end of the pressure adjusting rod (3) is connected to the movable die plate (5) having a pressure plate (4) is provided in the center portion, the lower side of the die holder (7) fixed on the lower die bed (6) Spring 14 on which the lower support plate 13 is provided with an ejector mill plate 12 having shaft shafts 9 and ejector pins 10, 11 inserted into the die holder 7 and the extrusion die 8, respectively. In the extrusion mold that is elastically installed in

The upper ends of the actuating levers 15 and 15 'having a predetermined length are respectively inserted into the insertion holes 5a and 5'a drilled on both sides of the movable plate 5, respectively, to the upper portions of the movable plate 5. The shaft pins 16 and 16 'are formed on the shafts 5b and 5'b formed at the periphery of the respective insertion holes 5a and 5'a. In addition to coalescing, the communication holes (5c) (5'c) formed to communicate in the transverse direction to the outside of the insertion hole (5a) (5'a) is burnt by the spring (17) (17 ') Both actuating levers 15 and 15 ', which are inserted into the pins 17a and 17'a and are bonded to the shaft pins 16 and 16' by the elasticity of the respective pins 17a and 17'a, By inwardly touching, the lower end portions of both actuating levers 15 and 15 'can be brought into contact with both sides of the fixed plate 7' under the die holder 7, while each actuating lever 15 thus installed. In the middle and bottom inner portions of the 15 ', the triangular contact pieces 15a, 15'a and the engaging protrusions 15b, 15'b each have a predetermined size. On both sides of the extrusion die 8 which protrudes inwardly and is provided on the upper surface of the die holder 7, triangular guide pieces 18 and 18 'facing the contact pieces 15a and 15'a, respectively. As the outwardly protruding and the lifting and lowering operation of the movable die 5, the contact pieces 15a, 15'a of both of the operating levers 15, 15 'are guided 18, 18' of the extrusion die 8. In addition to being able to come into contact with, the projections 15b and 15'b at the lower end thereof can be selectively caught at both lower ends of the ejector mill 12. The material, M ', is a workpiece molded according to the operation of the mold, an extrusion hole formed in the 8a extrusion die 8, M'a is a pin-shaped portion of the workpiece M' molded by the extrusion hole 8a, 19 is a positioning plate for positioning the workpiece (M), 20 is a cushion spring fitted to the pressure adjusting rod, respectively.

The operation and effect of the present invention configured as described above are as follows.

1 is a view showing a state before the movable die 5 and the punch 2 of the present invention mold is lowered, and at this time, the engaging projections 15b at the lower ends of both operating levers 15 and 15 '( 15'b) is in contact with both sides of the die holder fixing plate 7 ', and the contact pieces 15a and 15'a of the middle portion thereof are positioned at a distance from the top of the extrusion die 8, 8) The lower ejector mill plate 2 is upwardly supported by the elasticity of the spring 14 provided between the mill plate 12 and the support plate 13 so that there is a predetermined interval s between the mill plate 12 and the support plate 13. While the top surface of the plate 12 is in contact with the bottom surface of the die fixing plate 7 ', the tip of the pin 9 and the eject pin 10 fixed to the plate 12 are fixed to the positioning plate 19. ) And another ejected material (M), which is extracted and processed into the upper part of the extrusion die 8, is placed on the upper end of the eject pin 10, and inserted into the extrusion hole 8a in the center thereof. Pin 11 has its leading end is held in the state on the upper surface of the same line of the extrusion die (8) is gwanchul portion forming recess of the upper extrusion hole (8a).

When the press ram is operated in such a state and the punch holder 1, the punch 2, and the movable die 5 are lowered together, both of the operating levers 15 and 15 'adhered to the movable die 5 are As the linkage lowers, the actuating levers 15 and 15 'which are lowered in this way are elastically formed in the respective springs 17 and 17', so that the lower projections 15b and 15'b at the lower end are fixed to the die fixing plate 7 '. ) And the ejecting mill plate 12 is gradually lowered to the body in contact with both sides, as shown in Figure 2, the punch (2) and the movable die (5) is completely lowered, so that the punch (2) eject pin (10) The extrusion mill plate 12 in which the working material M placed on the upper end of the sheet) is extruded and the pressing plate 4 installed on the movable plate 5 is pressed against the bottom surface of the die fixing plate 7 'by pressing the mill pin 9. As the spring 14 is pushed down and the lower end of the contact plate 12 comes into contact with the upper surface of the support plate 13, the same as above, Engagement protrusions 15b and 15'b at the bottom of both operating levers 15 and 15 ', which are lowered along the side, are caught in the lower edges of both sides of the eject plate 12, and both operation levers 15 and 15'. By clamping the eject plate 12,

At this time, the actuating levers 15 and 15 'operated as described above have contact guides 15a and 15'a formed in the middle portion during the lowering operation thereof. 18) 18 ', the lower inclined surfaces of each of the contact pieces 15a and 15'a slide along the upper inclined surfaces of the guide pieces 18 and 18' protruding in an equilateral triangular shape, As shown by the phantom line in FIG. 2, the guide plate 18 passes through the tip of each of the guide pieces 18 and 18 'in an outwardly open state, and the upper inclined surface of each of the contact pieces 15a and 15'a is guided. By moving along the lower inclined surface of the piece 18 (18 '), as described above, the engaging projections 15b and 15'b at the lower end of each of the actuating levers 15 and 15' are formed as follows. In the fixed state at the lower end, the operation of the upper inclined surface of each contact piece 15a (15'a) is adjacent to the lower inclined surface of each guide piece 18 (18 ').

On the other hand, when the movable die 5 and the punch 2 are raised in the above state, both of the operating levers 15 and 15 'rise together, and the locking protrusions 15b and 15'b at the bottom thereof are supported. Since the eject plate 12 in contact with the upper surface of (13) is lifted up, each eject plate 10 and 11 installed in the plate 12 are interlocked with each other, and their front end portions are both sides of the bottom surface of the workpiece M '. And simultaneously push-up the pin-shaped portion M'a press-molded into the extrusion hole 8a so that the workpiece M 'can be easily disadvantaged from the extrusion die 8 as shown in FIG. The two actuating levers 15 and 15 'actuated in this manner are each guide pieces 18 and 18' at the same time as the engaging projections 15b and 15'b at the lower end pull up the eject plate 12. The upper inclined surfaces of the contact pieces 15a and 15'a which were positioned adjacent to the lower side of the contact pieces move upwardly to the body in contact with the lower inclined surfaces of the guide pieces 18 and 18 '. Above As it descends, it gradually opens to the outside, and accordingly, each of the locking protrusions 15b and 15'b at the lower side is gradually deviated in the outward direction from both lower edges of both sides of the eject plate 12 that they are in contact with. The contact plate 15a and 15'a, which are in contact with each other along the lower inclined surface of both guide pieces 18 and 18 ', move out of the inclined surface and reach the tip end thereof. Since each of the engaging projections 15b and 15'b, which were caught on the ejector plate 12 at the moment, is also completely separated from the platen 12, the respective operation levers 15 ( 15 ') is a lower end projection 15b (15'b) is raised to the body in contact with the both side walls of the eject plate 12 and the die fixing plate 7' is restored to the state as shown in FIG. .

As described above, the device of the present invention includes a simple actuating lever (15, 15 ') on the movable die (5) of the mold to directly lift the ejector mill (12) with the lifting force of the movable die (5). Restoring force of the springs 17 and 17 'by allowing the eject pin 11 to forcibly push out the pin portion M'a of the workpiece press-molded into the extrusion hole 8a of the extrusion die 8. Conventional separation apparatus using only can provide the advantage that can easily process separation of the pin-shaped workpiece that was impossible due to the difficulty in the separation operation.

Claims (1)

An ejector mill plate 12, which is elastically installed by a spring 14, is installed on the support plate 13 in the center of the die bed 6, which is installed at the lower part of the movable die plate 5, and the eject pin 10 provided on the mill plate 12. (11) is inserted into the die holder (7) and the extrusion die (8), each of the insertion holes (5a) (5b) (5'b) provided in the movable die (5) The upper ends of the actuating levers 15 and 15 'inserted into the 5'a are attached to the shaft pins 16 and 16' so that the actuating levers 15 and 15 'are connected to the finger pins 17a and 17'a. The inner side of each of the actuating levers 15 and 15 'is provided with triangular guide pieces 18 provided on both sides of the extrusion die 8; A contact piece (15a) (15'a) in contact with the (18 '), and the engaging projection (15b) is supported on the lower end of both sides of the eject plate (12) on the lower end of the actuating lever (15, 15') And a 15 < b >, respectively, formed to protrude inwardly.