CN212857756U

CN212857756U - Powder metallurgy die capable of improving machining precision

Info

Publication number: CN212857756U
Application number: CN202021241369.9U
Authority: CN
Inventors: 李玉银
Original assignee: JINDUICHENG MOLYBDENUM MINING GUANGMING (SHANDONG) CO Ltd
Current assignee: JINDUICHENG MOLYBDENUM MINING GUANGMING (SHANDONG) CO Ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-04-02
Anticipated expiration: 2030-06-30

Abstract

The utility model belongs to the technical field of powder metallurgy, especially, can improve powder metallurgy die of machining precision, do not have demoulding structure to current powder metallurgy die, the drawing of patterns mode is complicated, cause the material to warp easily, influence the machining precision, the impact force is stronger during the punching press, do not have the buffering effect, influence the problem of punching press effect, the scheme is provided now, it includes the die holder, the top fixed mounting of die holder has four guide posts, slidable mounting has same last mould on four guide posts, the bottom fixedly connected with mold core of going up the mould, the top fixedly connected with lower mould of die holder, the top fixed mounting of four guide posts has same roof, it has telescopic cylinder to embed on the roof, be connected with buffer structure between telescopic cylinder's output shaft and the last mould, the top of die holder is seted up flutedly. The utility model discloses the convenience avoids the material drawing of patterns to warp to the material drawing of patterns, can play the buffering effect at the punching press.

Description

Powder metallurgy die capable of improving machining precision

Technical Field

The utility model relates to a powder metallurgy technical field especially relates to a can improve powder metallurgy die of machining precision.

Background

Powder metallurgy is the process technology of preparing metal powder or using metal powder as a raw material, manufacturing materials, composite materials and various types of products through forming and sintering, therefore, during manufacturing, the material powder is firstly filled between dies, then compaction and heating are carried out through the dies, and finally finished products are obtained.

The existing powder metallurgy die does not have a demolding structure, is complex in demolding mode, easily causes material deformation, influences processing precision, is strong in impact force during stamping, does not have a buffering effect, and influences a stamping effect.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving current powder metallurgy die and not having demoulding structure, demoulding mode is complicated, causes the material to warp easily, influences the machining precision, and the impact force during punching press is stronger, does not have the buffering effect, influences the shortcoming of punching press effect, and the powder metallurgy die that can improve the machining precision that proposes.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a can improve powder metallurgy mould of machining precision, includes the die holder, and the top fixed mounting of die holder has four guide posts, and slidable mounting has same last mould on four guide posts, goes up the bottom fixedly connected with mold core of mould, and the top fixedly connected with lower mould of die holder, the top fixed mounting of four guide posts has same roof, and it has telescopic cylinder to embed on the roof, be connected with buffer structure between telescopic cylinder's the output shaft and the last mould, the top of die holder is seted up flutedly, is provided with thrust structure on the bottom inner wall of recess, and the die cavity has been seted up at the top of lower mould, and sliding connection has the stripper in the die cavity, four connecting rods of bottom fixedly connected with of stripper, four connecting rods all with demoulding structure looks adaptations.

Preferably, the demolding structure comprises a push rod motor, an extrusion plate and four guide rods, the four guide rods are fixedly mounted on the inner wall of the bottom of the groove, the push rod motor is fixedly connected to the inner wall of the bottom of the groove, an output shaft of the push rod motor is fixedly connected with the bottom of the extrusion plate, and the extrusion plate is connected with the four guide rods in a sliding mode.

Preferably, four intercommunicating pores have been seted up to the bottom of lower mould, four connecting rods respectively with four intercommunicating pores sliding connection, the spacing groove has all been seted up to one side of four connecting rods, four equal slidable mounting in the spacing groove have a stopper, four stoppers respectively with the inner wall fixed mounting of four intercommunicating pores, fixed mounting has same spring between stopper and the spacing groove.

Preferably, buffer structure includes four bracing pieces, a plurality of buffering spring and elastic plate, and four equal fixed mounting of bracing piece are at the top of last mould, and elastic plate slidable mounting is on four bracing pieces, and the equal fixed mounting of a plurality of buffering springs is between elastic plate and last mould.

Preferably, two connecting blocks are fixedly mounted on two sides of the lower die, and the four connecting blocks and the lower die base are connected with fixing screws.

Compared with the prior art, the utility model has the advantages of:

(1) according to the scheme, the upper die pushes the die core to enter the die groove to extrude the metal powder, and the die core is subjected to resistance to transfer acting force to the plurality of buffer springs, so that the buffer effect can be achieved, and the impact force of the die core on the metal powder is reduced;

(2) the push rod motor pushes the extrusion plate to move upwards, the extrusion plate pushes the four connecting rods to move upwards, and the four connecting rods push the stripper plate to move upwards to push the material out of the die groove, so that the stripping can be conveniently carried out, and the phenomenon that the material is deformed due to uneven stress and the processing quality is influenced is avoided;

(3) the push rod motor is reversely started, the extrusion plate moves downwards, under the action of the elastic force of the spring, the four connecting rods push the stripper plate to move downwards to reset, the stripper plate can be continuously used, and the lower die can be detached and replaced by detaching the connecting block.

The utility model discloses the convenience avoids the material drawing of patterns to warp to the material drawing of patterns, can play the buffering effect at the punching press.

Drawings

Fig. 1 is a schematic structural diagram of a powder metallurgy die capable of improving the processing precision provided by the utility model;

fig. 2 is a schematic structural diagram of a part a of a powder metallurgy die capable of improving the processing precision according to the present invention;

fig. 3 is the utility model provides a can improve the spatial structure sketch map of lower mould, connecting block and connecting rod of powder metallurgy die of machining precision.

In the figure: 1 lower die holder, 2 guide posts, 3 top plates, 4 telescopic cylinders, 5 elastic plates, 6 buffer springs, 7 support rods, 8 upper dies, 9 die cores, 10 lower dies, 11 die grooves, 12 stripper plates, 13 connecting blocks, 14 grooves, 15 guide rods, 16 push rod motors, 17 extrusion plates, 18 connecting rods, 19 limiting grooves, 20 springs, 21 communicating holes and 22 limiting blocks.

Detailed Description

The technical solutions in the embodiments will be described clearly and completely with reference to the drawings in the embodiments, and it is obvious that the described embodiments are only a part of the embodiments, but not all embodiments.

Example one

Referring to fig. 1-3, a powder metallurgy die capable of improving machining precision, including die holder 1, the top fixed mounting of die holder 1 has four guide posts 2, slidable mounting has same last mould 8 on four guide posts 2, the bottom fixedly connected with mold core 9 of last mould 8, the top fixedly connected with lower mould 10 of die holder 1, the top fixed mounting of four guide posts 2 has same roof 3, it has telescopic cylinder 4 to inlay on the roof 3, be connected with buffer structure between telescopic cylinder 4's the output shaft and the last mould 8, recess 14 is seted up at the top of die holder 1, be provided with thrust structure on the bottom inner wall of recess 14, mould groove 11 has been seted up at the top of lower mould 10, sliding connection has stripper 12 in mould groove 11, stripper 12 and the seamless sliding connection in mould groove 11, four connecting rods 18 of the bottom fixedly connected with of stripper 12, four connecting rods 18 all with demoulding structure looks adaptation.

In this embodiment, demoulding structure includes push rod motor 16, stripper plate 17 and four guide arms 15, and four guide arms 15 are all fixed mounting on the bottom inner wall of recess 14, and push rod motor 16 fixed connection is on the bottom inner wall of recess 14, and push rod motor 16's output shaft and stripper plate 17's bottom fixed connection, stripper plate 17 and four guide arms 15 sliding connection, and four guide arms 15 can play the supporting role to stripper plate 17.

In this embodiment, four intercommunicating pores 21 have been seted up to the bottom of lower mould 10, four connecting rods 18 respectively with four intercommunicating pores 21 sliding connection, spacing groove 19 has all been seted up to one side of four connecting rods 18, equal slidable mounting has stopper 22 in four spacing grooves 19, four stopper 22 respectively with four intercommunicating pores 21's inner wall fixed mounting, fixed mounting has same spring 20 between stopper 22 and the spacing groove 19, spring 20 provides decurrent elasticity for connecting rod 16.

In this embodiment, buffer structure includes four bracing pieces 7, a plurality of buffering springs 6 and elastic plate 5, and four equal fixed mounting of bracing piece 7 are at the top of last mould 8, and elastic plate 5 slidable mounting is on four bracing pieces 7, and a plurality of equal fixed mounting of buffering springs 6 are between elastic plate 5 and last mould 8, and buffering springs 6 can play the cushioning effect to last mould 8, reduce the impact force of mold core 9.

In this embodiment, the equal fixed mounting in both sides of lower mould 10 has two connecting blocks 13, and four connecting blocks 13 all are connected with the fixed screw with die holder 1, and the fixed screw can be dismantled, can dismantle connecting block 13.

Example two

Referring to fig. 1-3, a powder metallurgy die capable of improving processing precision comprises a lower die holder 1, four guide posts 2 are fixedly installed at the top of the lower die holder 1 through welding, the same upper die 8 is slidably installed on the four guide posts 2, a die core 9 is fixedly connected at the bottom of the upper die 8 through screws, a lower die 10 is fixedly connected at the top of the lower die holder 1 through screws, the same top plate 3 is fixedly installed at the top of the four guide posts 2 through welding, a telescopic cylinder 4 is embedded in the top plate 3, a buffer structure is connected between an output shaft of the telescopic cylinder 4 and the upper die 8, a groove 14 is formed at the top of the lower die holder 1, a thrust structure is arranged on the inner wall of the bottom of the groove 14, a die groove 11 is formed at the top of the lower die 10, a stripper plate 12 is slidably connected in the die groove 11, the stripper plate 12 is in seamless sliding connection with, the four connecting rods 18 are all adapted to the demoulding structure.

In this embodiment, demoulding structure includes push rod motor 16, stripper plate 17 and four guide arms 15, and four guide arms 15 are all through welded fastening on the bottom inner wall of recess 14, and push rod motor 16 passes through screw fixed connection on the bottom inner wall of recess 14, and screw fixed connection is passed through with stripper plate 17's bottom to push rod motor 16's output shaft, and stripper plate 17 and four guide arms 15 sliding connection, and four guide arms 15 can play the supporting role to stripper plate 17.

In this embodiment, four intercommunicating pores 21 have been seted up to the bottom of lower mould 10, four connecting rods 18 respectively with four intercommunicating pores 21 sliding connection, spacing groove 19 has all been seted up to one side of four connecting rods 18, equal slidable mounting has stopper 22 in four spacing grooves 19, four stopper 22 pass through welded fastening with the inner wall of four intercommunicating pores 21 respectively and install, there is same spring 20 through welded fastening between stopper 22 and the spacing groove 19, spring 20 provides decurrent elasticity for connecting rod 16.

In this embodiment, buffer structure includes four bracing pieces 7, a plurality of buffering springs 6 and elastic plate 5, and four bracing pieces 7 all install at the top of last mould 8 through welded fastening, and elastic plate 5 slidable mounting is on four bracing pieces 7, and a plurality of buffering springs 6 all install between elastic plate 5 and last mould 8 through welded fastening, and buffering springs 6 can play the cushioning effect to last mould 8, reduces the impact force of mould core 9.

In this embodiment, two connecting blocks 13 are all installed through welded fastening in the both sides of lower mould 10, and four connecting blocks 13 all are connected with fixed screw with die holder 1, and fixed screw can dismantle, can dismantle connecting block 13.

In the embodiment, when the metal powder injection mold is used, metal powder is added into the mold groove 11, the telescopic cylinder 4 is started, the telescopic cylinder 4 pushes the upper mold 8 to move downwards, the upper mold 8 pushes the mold core 9 to enter the mold groove 11 to extrude the metal powder, the mold core 9 receives resistance to transmit acting force to the plurality of buffer springs 6, the buffer effect can be achieved, the impact force of the mold core 9 on the metal powder is reduced, after the processing is completed, the telescopic cylinder 4 is reversely started, the mold core 9 is enabled to leave the mold groove 11, the push rod motor 16 pushes the extrusion plate 17 to move upwards, the extrusion plate 17 pushes the four connecting rods 18 to move upwards, the four connecting rods 18 push the stripper plate 12 to move upwards to push materials to leave the mold groove 11, demolding can be convenient, the push rod motor 16 is reversely started, the extrusion plate 17 moves downwards, under the elastic force of the springs 20, the four connecting rods 18 push the stripper plate 12, can dismantle the change with lower mould 10 through dismantling connecting block 13, all structures in this application can all carry out the selection of material and length according to the in-service use condition, and the drawing is schematic structure chart, and suitable adjustment can be made to specific actual size.

The above descriptions are only preferred embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the scope of the present invention, and the technical solutions and the utility model concepts of the present invention are equivalent to, replaced or changed.

Claims

1. The powder metallurgy die capable of improving the processing precision comprises a lower die holder (1), wherein four guide posts (2) are fixedly mounted at the top of the lower die holder (1), the same upper die (8) is slidably mounted on the four guide posts (2), a die core (9) is fixedly connected at the bottom of the upper die (8), a lower die (10) is fixedly connected at the top of the lower die holder (1), the same top plate (3) is fixedly mounted at the top of the four guide posts (2), a telescopic cylinder (4) is embedded in the top plate (3), the powder metallurgy die is characterized in that a buffer structure is connected between an output shaft of the telescopic cylinder (4) and the upper die (8), a groove (14) is formed at the top of the lower die holder (1), a thrust structure is arranged on the inner wall of the bottom of the groove (14), a die groove (11) is formed at the top of the lower die (10), and a stripper, the bottom of the demoulding plate (12) is fixedly connected with four connecting rods (18), and the four connecting rods (18) are all matched with a demoulding structure.

2. The powder metallurgy die capable of improving the processing precision according to claim 1, wherein the demolding structure comprises a push rod motor (16), an extrusion plate (17) and four guide rods (15), the four guide rods (15) are all fixedly installed on the inner wall of the bottom of the groove (14), the push rod motor (16) is fixedly connected to the inner wall of the bottom of the groove (14), an output shaft of the push rod motor (16) is fixedly connected with the bottom of the extrusion plate (17), and the extrusion plate (17) is slidably connected with the four guide rods (15).

3. The powder metallurgy die capable of improving the processing precision according to claim 1, wherein the bottom of the lower die (10) is provided with four communication holes (21), the four connecting rods (18) are respectively connected with the four communication holes (21) in a sliding manner, one sides of the four connecting rods (18) are respectively provided with a limiting groove (19), limiting blocks (22) are respectively installed in the four limiting grooves (19) in a sliding manner, the four limiting blocks (22) are respectively fixedly installed on the inner walls of the four communication holes (21), and the same spring (20) is fixedly installed between the limiting blocks (22) and the limiting grooves (19).

4. The powder metallurgy die capable of improving the processing precision according to claim 1, wherein the buffering structure comprises four support rods (7), a plurality of buffering springs (6) and an elastic plate (5), the four support rods (7) are all fixedly mounted on the top of the upper die (8), the elastic plate (5) is slidably mounted on the four support rods (7), and the plurality of buffering springs (6) are all fixedly mounted between the elastic plate (5) and the upper die (8).

5. The powder metallurgy die capable of improving the processing precision according to claim 1, wherein two connecting blocks (13) are fixedly mounted on two sides of the lower die (10), and the four connecting blocks (13) and the lower die holder (1) are connected with fixing screws.