CN212371176U - Powder metallurgy die stopper - Google Patents

Abstract

The utility model discloses a powder metallurgy die stopper, which comprises an upper die base and an upper die plate, wherein the upper die plate is arranged on the outer wall of the lower end of the upper die base, the lower die plate is arranged on the outer wall of the lower end of the upper die plate, when the upper die base on the die descends, a buffer head firstly collides with the inner wall of the lower end of a buffer hole, and simultaneously compresses through a buffer spring on a buffer rod, so that the descending speed of a positioning column is reduced, when the upper die plate and the lower die plate are combined, the upper die plate can not extrude the lower die plate due to too high speed, the condition of loss occurs, a limit block on the buffer rod can also enter into a limit groove, the limit block moves upwards in a movable groove until the positioning column is blocked, the position of the combined die of the upper die plate and the lower die plate is determined, the die damage caused by the fact that the upper die plate collides, the limiter occupies small space of a die, is convenient to install, and has the functions of positioning and limiting, so that the effect is better.

Description

Powder metallurgy die stopper

Technical Field

The utility model belongs to the technical field of the mould is relevant, concretely relates to powder metallurgy mould stopper.

Background

Powder metallurgy is a process technology for preparing metal powder or using metal powder (or a mixture of metal powder and nonmetal powder) as a raw material to manufacture metal materials, composite materials and various products through forming and sintering, and the powder metallurgy method has similar places with ceramic production and belongs to a powder sintering technology, so a series of new powder metallurgy technologies can also be used for preparing ceramic materials. Because of the advantages of powder metallurgy technology, it has become a key to solve the problem of new materials, playing a very important role in the development of new materials, and because of many powder pressing methods, powder pressing molds are also diversified. According to different pressing methods, the method can be divided into: the basic principle of the design of the powder metallurgy die is as follows: the process characteristics of less powder metallurgy, no cutting processing and approximate forming are fully exerted, and the blank can meet 3 basic requirements of geometric shape, size, precision, surface roughness, density, distribution and the like, no matter the blank is required by a pressing die, a finishing die, a re-pressing die and a forging die.

The existing powder metallurgy die stopper technology has the following problems: in the mould opening and closing process, the process is too big when the mould hits the mould or opens and shuts the mould very easily to cause the condition of damaging the mould, can appear the stopper when mould opening and shutting mould at present and reset improper and lead to the condition that the mould damaged.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a powder metallurgy die stop to propose in solving above-mentioned background art can appear the problem that the stop resets improperly and lead to the mould to damage when the mould opens and shuts at present.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a powder metallurgy die stopper, includes upper die base and cope match-plate pattern, the cope match-plate pattern is installed on upper die base lower extreme outer wall, be provided with the lower bolster on the cope match-plate pattern lower extreme outer wall, be provided with the die holder on the lower bolster lower extreme outer wall, be provided with the reference column on the upper die base lower extreme outer wall, be provided with the locating hole on the die holder of reference column under the side, inside the spacing groove that all is provided with of both ends circumference inner wall about the locating hole, inside the both ends circumference outer wall all is provided with the movable groove about the reference column, the inside stopper that is provided with of movable groove, the inside buffer beam that stretches out downwards that is provided with of reference column lower extreme outer wall, buffer beam and reference column pass through buffer spring fixed connection, be provided with.

Preferably, a lower die cavity is formed in the outer wall of the lower end of the lower die plate, and a lower die cavity is formed in the outer wall of the upper end of the upper die plate.

Preferably, the inner portion of the outer wall of the upper end of the upper die base is provided with a screw hole, and the inner portion of the outer wall of the upper end of the upper die base is also provided with an injection hole.

Preferably, a movable hole is formed in the outer wall of the lower end of the positioning column, and the buffer rod is arranged in the movable hole.

Preferably, the screw hole is formed in the outer wall of the lower end of the buffer rod, and the screw rod is arranged inside the screw hole.

Preferably, the inside buffer hole that is provided with of locating hole lower extreme inner wall, the buffering head sets up the inside at the buffer hole, buffering head and buffering hole are conical structure, buffering head and buffering hole keep closely laminating.

Compared with the prior art of powder metallurgy die stop, the utility model provides a powder metallurgy die stop possesses following beneficial effect:

the utility model discloses a powder metallurgy die stopper passes through the inside increase buffer beam of reference column, and the stopper is added at the both ends of this buffer beam simultaneously, when spacing to the upper die base, can also prevent upper die plate and lower bolster to have stronger impact force through buffer spring, avoid the damage of mould, when carrying out the injection molding, move the upper die base downwards, this upper die base is the movable mould piece, make the reference column enter into the locating hole on the lower bolster, buffer beam and the gentle drift in this reference column inside at this moment insert in the buffer hole, and the buffer head collides the inner wall of buffer hole lower extreme at first, compress through the buffer spring on this buffer beam simultaneously, and then make the speed that the reference column descends slow down to some extent, and also can drive upper die base and upper die plate to reduce the speed that descends, when upper die plate and lower bolster carry out the compound die, the lower die plate can not cause the extrusion to the template because of speed too fast because of, make cope match-plate pattern and lower bolster lossy condition, stopper on this buffer bar also can enter into the spacing groove simultaneously, and the stopper is at the activity groove rebound, until blocking the reference column, make the reference column can not continue the lapse, and then confirm the position of cope match-plate pattern and lower bolster compound die, avoided causing the cope match-plate pattern to dash and hit on the lower bolster and cause the mould damage, this stopper occupation mould space is little, the installation is convenient, have location and spacing function simultaneously, make spacing effect better.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description, do not constitute a limitation of the invention, in which:

fig. 1 is a schematic view of a three-dimensional structure of a powder metallurgy die stopper according to the present invention;

fig. 2 is a schematic view of a three-dimensional structure of a positioning column provided by the present invention;

fig. 3 is a schematic view of a parsing plane structure of the die stopper provided by the present invention;

fig. 4 is a schematic view of a local parsing structure of the die stopper according to the present invention;

in the figure: 1. an upper die holder; 2. a limiting groove; 3. a lower die holder; 4. positioning holes; 5. a positioning column; 6. a lower template; 7. mounting a template; 8. a limiting block; 9. a buffer rod; 10. a movable groove; 11. a buffer head; 12. a screw; 13. a buffer spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a powder metallurgy die limiter comprises an upper die holder 1 and an upper die plate 7, wherein the upper die plate 7 is installed on the outer wall of the lower end of the upper die holder 1, the outer wall of the lower end of the upper die plate 7 is provided with a lower die plate 6, the outer wall of the lower end of the lower die plate 6 is provided with a lower die holder 3, the outer wall of the lower end of the upper die holder 1 is provided with a positioning column 5, the inner wall of the lower end of the positioning hole 4 is internally provided with a buffering hole, a buffering head 11 is arranged inside the buffering hole, the buffering head 11 and a slow punching hole are both in a conical structure and are kept in close fit, so that the buffering head 11 can enter the buffering hole to play a buffering role and can also perform accurate positioning, the positioning hole 4 is arranged on the lower die holder 3 under the positioning column 5, the inner walls of the circumferences of the left end and the right end of the, the inside of activity groove 10 is provided with stopper 8, and reference column 5 lower extreme outer wall is inside to be provided with downwardly extending's buffer beam 9, and buffer beam 9 and reference column 5 pass through buffer spring 13 fixed connection, are provided with buffering head 11 on the 9 lower extreme outer walls of buffer beam, are provided with screw rod 12 on the 11 upper end outer walls of buffering.

A powder metallurgy die limiter comprises an upper die holder 1 and an upper die plate 7, wherein a lower die cavity is arranged inside the outer wall of the lower end of the lower die plate 6, a lower die cavity is arranged inside the outer wall of the upper end of the upper die plate 7, so that molten metal in a molten state can be injected into the upper die cavity and the lower die cavity, a product can be formed after cooling, a screw hole is arranged inside the outer wall of the upper end of the upper die holder 1, a filling hole is also arranged inside the outer wall of the upper end of the upper die holder 1, so that the upper die holder 1 can be installed to be a movable module, demolding is convenient, meanwhile, the molten metal in the molten state is injected into the die cavity through the filling hole, a movable hole is arranged inside the outer wall of the lower end of a positioning column 5, a buffer rod 9 is arranged inside the movable hole, so that the buffer rod 9 can move up and down in the movable hole, the buffer action is realized, screw rod 12 sets up in the inside of screw, conveniently changes buffer head 11 like this, and the mould often opens the mould and the compound die, causes buffer head 11 easily to be lossy, needs to change buffer head 11, avoids influencing the buffering effect.

The utility model discloses a theory of operation and use flow: after the utility model is installed, when the die limiting stopper is installed, firstly the buffer rod 9 is inserted into the movable hole on the positioning post 5, and the buffer rod 9 is fixed in the movable hole through the buffer spring 13, then the two limiting blocks 8 are respectively inserted into the two movable grooves 10, then the limiting blocks 8 are installed on the outer walls of the two ends of the buffer rod 9 through a welding mode, then the buffer head 11 is installed at the lower end of the buffer rod 9 through the screw 12 at the upper end, then the upper ends of the four positioning posts 5 are also installed at the lower end of the upper die base 1 through a welding mode, at this time, the upper die plate 7 and the lower die plate 6 can be installed in the upper die base 1 and the lower die base 3 through nuts, then the upper die base 1 is installed, the upper die base 1 is a movable module, when injection molding is carried out, the upper die base 1 is moved downwards, so that the positioning posts 5 enter the positioning holes 4 on the lower die, at this time, the buffer rod 9 and the buffer punch 11 inside the positioning column 5 are inserted into the buffer hole, and the buffer head 11 firstly collides with the inner wall of the lower end of the buffer hole, and simultaneously is compressed by the buffer spring 13 on the buffer rod 9, so that the descending speed of the positioning column 5 is slowed down, and the upper die holder 1 and the upper die plate 7 are also driven to reduce the descending speed, so that when the upper die plate 7 and the lower die plate 6 are closed, the upper die plate 7 cannot extrude the lower die plate 6 due to too high speed, the upper die plate 7 and the lower die plate 6 are damaged, and the limit block 8 on the buffer rod 9 can enter the limit groove 2, and the limit block 8 moves upwards in the movable groove 10 until the positioning column 5 is blocked, so that the positioning column 5 cannot continue to move downwards, and the closing position of the upper die plate 7 and the lower die plate 6 is determined, thereby avoiding the damage to the die caused by the collision of the upper die plate 7 on the lower die plate 6, and finally, injecting molten metal in a molten state into the upper die cavity and the lower die cavity, and cooling to form a product.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a powder metallurgy die stopper, includes upper die base (1) and cope match-plate pattern (7), its characterized in that: the die comprises an upper die plate (7), a lower die plate (6), a lower die base (3), a positioning column (5), a positioning hole (4), a limiting groove (2), a movable groove (10), a limiting block (8), a buffer rod (9) extending downwards, and a buffer spring (13), wherein the upper die plate (7) is arranged on the outer wall of the lower end of an upper die base (1), the lower die plate (7) is arranged on the outer wall of the lower end of the upper die plate (7), the lower die base (3) is arranged on the outer wall of the lower end of the lower die plate (6), the positioning column (5) is provided with the lower die base (3), the positioning hole (4) is arranged on the inner wall of the circumference of the left end and the right end of the positioning column (5), the movable groove (10) is arranged on the inner wall of the circumference of the left end and the, the buffer rod is characterized in that a buffer head (11) is arranged on the outer wall of the lower end of the buffer rod (9), and a screw rod (12) is arranged on the outer wall of the upper end of the buffer head (11).

2. The powder metallurgy die retainer according to claim 1, wherein: the lower die is characterized in that a lower die cavity is formed in the outer wall of the lower end of the lower die plate (6), and a lower die cavity is formed in the outer wall of the upper end of the upper die plate (7).

3. The powder metallurgy die retainer according to claim 1, wherein: the die is characterized in that a screw hole is formed in the outer wall of the upper end of the upper die base (1), and an injection hole is formed in the outer wall of the upper end of the upper die base (1).

4. The powder metallurgy die retainer according to claim 1, wherein: the inner part of the outer wall of the lower end of the positioning column (5) is provided with a movable hole, and the buffer rod (9) is arranged in the movable hole.

5. The powder metallurgy die retainer according to claim 1, wherein: the buffer rod (9) is characterized in that a screw hole is formed in the outer wall of the lower end of the buffer rod, and the screw rod (12) is arranged in the screw hole.

6. The powder metallurgy die retainer according to claim 1, wherein: the buffer hole is formed in the inner wall of the lower end of the positioning hole (4), the buffer head (11) is arranged inside the buffer hole, the buffer head (11) and the buffer hole are both of conical structures, and the buffer head (11) and the buffer hole are kept to be tightly attached.

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