CN213052744U

CN213052744U - MIM thin wall part forming device

Info

Publication number: CN213052744U
Application number: CN202021741244.2U
Authority: CN
Inventors: 岳葆林; 黄小龙
Original assignee: Suzhou Zhuomi Intelligent Manufacturing Technology Co ltd
Current assignee: Suzhou Zhuomi Intelligent Manufacturing Technology Co ltd
Priority date: 2020-08-19
Filing date: 2020-08-19
Publication date: 2021-04-27
Anticipated expiration: 2030-08-19

Abstract

The utility model discloses a MIM thin wall part forming device belongs to thin wall part shaping technical field, including bottom plate, an upper fixed plate, the fixed surface of bottom plate has the fixed module, the internally mounted of fixed module has the die, sprue and supplementary runner have been seted up to the inside of bottom plate and die, the bottom of an upper fixed plate is fixed with movable mould piece, movable mould piece is U type structure, movable mould piece's bottom is fixed with the clamp plate, the welding has the stand between clamp plate and the movable mould piece, the drift fixed plate is installed to the outer wall of stand, the surface mounting of drift fixed plate has the drift. This device passes through the cylinder and drives the drift fixed plate decline, drives the drift decline through the drift fixed plate, carries out die-cut through the drift to the product, and die-cut time is short, tool simple structure, need not to take out die-cut again with the product after the die sinking, has improved the precision of product size, has improved production efficiency simultaneously.

Description

MIM thin wall part forming device

Technical Field

The utility model relates to a thin wall part shaping technical field specifically is a MIM thin wall part forming device.

Background

The Metal Powder Injection Molding technology (MIM) is a novel Powder metallurgy near-net-shape forming technology formed by introducing the modern plastic Injection Molding technology into the Powder metallurgy field, and the basic process flow of the technology is as follows: firstly, uniformly mixing solid powder and an organic binder, granulating, injecting the mixture into a die cavity by using an injection molding machine in a heating and plasticizing state for curing and molding, removing the binder in a molded blank by using a chemical or thermal decomposition method, and finally sintering and densifying to obtain a final product;

however, the MIM part is poor in raw material fluidity and not easy to fill during molding, so that the minimum wall thickness of a product is generally 0.5mm, and when the minimum wall thickness of the product is smaller than the minimum wall thickness, the molding is easy to lack of materials, the raw material is difficult to reach a cavity with the wall thickness smaller than 0.5mm, and the whole cavity cannot be filled, so that the quality of the product is reduced, and the product is required to be taken out and then punched, so that time and labor are wasted, and the production efficiency of the product is reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a MIM thin wall part forming device carries out the injection of plastify raw and other materials to the die cavity simultaneously through sprue and supplementary runner for the packing of die cavity is fuller, and density is even, has reduced the incidence of scarce material phenomenon, with the problem of proposing in solving above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a MIM thin-walled part forming device comprises a lower fixing plate and an upper fixing plate, wherein a fixed module is fixed on the surface of the lower fixing plate, a female die is installed inside the fixed module, and a main runner and an auxiliary runner are arranged inside the lower fixing plate and the female die;

the bottom of the upper fixing plate is fixedly provided with a movable module, the movable module is of a U-shaped structure, the bottom of the movable module is fixedly provided with a pressing plate, an upright post is welded between the pressing plate and the movable module, the outer wall of the upright post is provided with a punch fixing plate, the surface of the punch fixing plate is provided with a punch, the punch penetrates through the surface of the pressing plate, the top of the upper fixing plate is fixedly connected with an air cylinder through a screw, the output end of the air cylinder penetrates through the surface of the upper fixing plate, and the output end of the air cylinder is fixed at the top of the;

the surface of clamp plate and die is seted up the die cavity, sprue and auxiliary flow channel communicate in the inside of die cavity, the drift contacts in the surface of die cavity.

Preferably, the punch heads are provided with at least eight groups, and the punch heads of the at least eight groups are equidistantly distributed in the same circumference.

Preferably, a sleeve penetrates through the surface of the punch fixing plate and is sleeved on the outer wall of the upright post.

Preferably, the punch is fixedly connected to the surface of the punch fixing plate through screws, and the die is fixedly connected to the inside of the fixed die block through screws.

Preferably, the auxiliary flow channels are arranged in two groups, and the two groups of auxiliary flow channels are symmetrically distributed on two sides of the main flow channel.

Preferably, a sliding sleeve is sleeved at the interface of the output end of the air cylinder and the upper fixing plate.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the device simultaneously injects the plasticized raw materials into the cavity through the main runner and the auxiliary runner, so that the cavity is filled more fully and has uniform density, the occurrence rate of the phenomenon of material shortage is reduced, and the quality of products is improved;

2. this device passes through the cylinder and drives the drift fixed plate decline, drives the drift decline through the drift fixed plate, carries out die-cut through the drift to the product, and die-cut time is short, tool simple structure, need not to take out die-cut again with the product after the die sinking, has improved the precision of product size, has improved production efficiency simultaneously.

Drawings

FIG. 1 is a schematic sectional view of the present invention;

fig. 2 is a schematic view of the main structure of the punch fixing plate of the present invention.

In the figure: 1. a lower fixing plate; 2. determining a module; 3. a female die; 4. pressing a plate; 5. a punch; 6. a punch fixing plate; 7. a cylinder; 8. an upper fixing plate; 9. a sleeve; 10. a movable module; 11. a cavity; 12. an auxiliary flow passage; 13. a main flow passage.

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. 1-2, the present invention provides a technical solution: a MIM thin-walled part forming device comprises a lower fixing plate 1 and an upper fixing plate 8;

the surface of the lower fixing plate 1 is fixed with a fixed mold block 2, a female mold 3 is installed in the fixed mold block 2, a main runner 13 and two auxiliary runners 12 are arranged in the lower fixing plate 1 and the female mold 3, the two groups of auxiliary runners 12 are symmetrically distributed on two sides of the main runner 13, and the two groups of auxiliary runners 12 are arranged, so that the inner filling ground of the cavity 11 is fuller, and the phenomenon of material shortage is prevented;

the bottom of the upper fixing plate 8 is fixed with a movable module 10, the movable module 10 is of a U-shaped structure, the bottom of the movable module 10 is fixed with a pressing plate 4, a stand column is welded between the pressing plate 4 and the movable module 10, a punch fixing plate 6 is installed on the outer wall of the stand column, a sleeve 9 penetrates through the surface of the punch fixing plate 6, the sleeve 9 is sleeved on the outer wall of the stand column, the sleeve 9 is made of metal, the inner wall and the outer wall are processed into smooth surfaces through a polishing process, the friction force between the sleeve 9 and the stand column is reduced, the load of the air cylinder 7 is reduced, a punch 5 is installed on the surface of the punch fixing plate 6, the punch 5 is fixedly connected to the surface of the punch fixing plate 6 through screws, the female die 3 is fixedly connected to the inside of the, the appearance and the size of a product can be changed by replacing the punch 5 and the female die 3, so that the die changing cost is reduced;

the punch 5 penetrates through the surface of the pressing plate 4, the punch 5 is provided with at least eight groups, the punch 5 with at least eight groups are equidistantly distributed in the same circumference, the number of products produced by a single time can be increased by the punch 5 with multiple groups, the production efficiency is improved, the top of the upper fixing plate 8 is fixedly connected with the air cylinder 7 through screws, the output end of the air cylinder 7 penetrates through the surface of the upper fixing plate 8, the output end of the air cylinder 7 is fixed at the top of the punch fixing plate 6, a sliding sleeve is sleeved at the interface of the output end of the air cylinder 7 and the upper fixing plate 8 and is made of metal, the aim is to reduce the friction force between the output end of the air cylinder 7 and the upper fixing plate 8, the air cylinder 7 drives, a punch 5 arranged on the surface of a punch fixing plate 6 penetrates through the pressing plate 4 and extends out of the top of the cavity 11 to punch a product;

the surfaces of the pressing plate 4 and the female die 3 are provided with a cavity 11, the main flow channel 13 and the auxiliary flow channel 12 are communicated with the inside of the cavity 11, the punch 5 is contacted with the surface of the cavity 11, and the auxiliary flow channel 12 is matched with the main flow channel 13 to simultaneously inject plasticized raw materials into the cavity 11, so that the raw materials can be filled in the whole cavity 11, and the defective rate is reduced.

The working principle is as follows: during the use, raw and other materials after the injection plastify in to die cavity 11 through sprue 13 and auxiliary runner 12, sprue 13 and auxiliary runner 12 are simultaneously to the inside injection of die cavity 11, make filling of product more full, after with the product shaping through die cavity 11, open the switch of cylinder 7, cylinder 7 drives drift fixed plate 6 and passes through sleeve 9 at the outer wall straight line decline of stand, make drift 5 of 6 surface mounting of drift fixed plate run through clamp plate 4, stretch out from the top of die cavity 11, die-cut the product, control drift 5 through cylinder 7 after the die-cut completion and reset, need not to take out the product and then die-cut, improved production efficiency when having guaranteed product size precision.

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

1. An MIM thin wall part forming device, includes bottom plate (1), an upper fixed plate (8), its characterized in that: a fixed module (2) is fixed on the surface of the lower fixing plate (1), a female die (3) is installed inside the fixed module (2), and a main runner (13) and an auxiliary runner (12) are arranged inside the lower fixing plate (1) and the female die (3);

a movable module (10) is fixed at the bottom of the upper fixing plate (8), the movable module (10) is of a U-shaped structure, a pressing plate (4) is fixed at the bottom of the movable module (10), an upright post is welded between the pressing plate (4) and the movable module (10), a punch fixing plate (6) is installed on the outer wall of the upright post, a punch (5) is installed on the surface of the punch fixing plate (6), the punch (5) penetrates through the surface of the pressing plate (4), an air cylinder (7) is fixedly connected to the top of the upper fixing plate (8) through a screw, the output end of the air cylinder (7) penetrates through the surface of the upper fixing plate (8), and the output end of the air cylinder (7) is fixed to the top of the punch fixing plate (6);

the punching die is characterized in that cavities (11) are formed in the surfaces of the pressing plate (4) and the female die (3), the main flow channel (13) and the auxiliary flow channel (12) are communicated with the inside of the cavities (11), and the punching head (5) is in contact with the surface of the cavities (11).

2. The MIM thin-walled feature formation apparatus of claim 1, wherein: the punch heads (5) are provided with at least eight groups, and the punch heads (5) in the eight groups are equidistantly distributed in the same circumference.

3. The MIM thin-walled feature formation apparatus of claim 1, wherein: the surface of the punch fixing plate (6) penetrates through a sleeve (9), and the sleeve (9) is sleeved on the outer wall of the upright post.

4. The MIM thin-walled feature formation apparatus of claim 1, wherein: the punch (5) is fixedly connected to the surface of the punch fixing plate (6) through screws, and the female die (3) is fixedly connected to the inside of the fixed die block (2) through screws.

5. The MIM thin-walled feature formation apparatus of claim 1, wherein: the auxiliary flow channels (12) are arranged in two groups, and the two groups of auxiliary flow channels (12) are symmetrically distributed on two sides of the main flow channel (13).

6. The MIM thin-walled feature formation apparatus of claim 1, wherein: and a sliding sleeve is sleeved at the interface of the output end of the air cylinder (7) and the upper fixing plate (8).