CN213496482U

CN213496482U - Powder metallurgy die

Info

Publication number: CN213496482U
Application number: CN202022177650.7U
Authority: CN
Inventors: 何邦成; 何考贤
Original assignee: Boluo Heshi Die Manufacturing Co ltd
Current assignee: Boluo Heshi Die Manufacturing Co ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2021-06-22
Anticipated expiration: 2030-09-29

Abstract

The utility model discloses a powder metallurgy die, including female type, cope match-up portion and type down, female type is equipped with into die cavity and suppression chamber, and cope match-up portion includes relative activity's cope match-up subassembly and cope match-up cover, and the cope match-up subassembly acts on the suppression chamber with the type down jointly, and the cope match-up cover acts on into the die cavity. In the pressing process of the powder metallurgy die, one part of powder is in a forming cavity, and the other part of powder is in a pressing cavity; the powder in molding chamber is suppressed with the female type by last type cover jointly, and the powder in pressing chamber is suppressed by last type subassembly and lower type jointly, because the powder in pressing chamber receives bigger pressure than the powder in molding chamber, consequently, the powder density in pressing chamber is bigger for the powder density in molding chamber, after the powder in pressing chamber and the powder in molding chamber are integrated through the diffusion, make interior tight product of pine outward, promote performance such as product toughness, improve the holistic intensity of product, and then reduce the spoilage in the product use, reduce the change number of times, enterprise's manufacturing cost has been practiced thrift greatly.

Description

Powder metallurgy die

Technical Field

The utility model relates to a powder forming technology field specifically, relates to powder metallurgy die.

Background

Powder metallurgy is a technique for preparing metal materials, composite materials and various types of products by using metal powder or a mixture of metal powder and nonmetal powder as a raw material. The powder metallurgy technology has a series of advantages of remarkable energy saving, material saving, excellent performance, high product precision, good stability and the like, and is suitable for mass production.

In the field of powder metallurgy, the density of each part of a product prepared by most dies is similar at present, so that the maximum value of the pressure born by each part is also similar, and the stress of each part of the product is uneven in the actual use process; because the overall density of the product is similar, the overall rigidity and hardness of the product are high, but the product is insufficient, the toughness is low and the brittleness is high, the strength is insufficient comprehensively, when the product is locally stressed, the phenomenon of fracture is easy to occur, the product needs to be frequently replaced, the labor cost and the material cost are consumed, and the production input cost of an enterprise is increased.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a powder metallurgy die.

The utility model discloses a powder metallurgy die, which comprises a female die, an upper die part and a lower die, wherein both the upper die part and the lower die are movably arranged on the female die; the female mold is provided with a molding cavity and a pressing cavity, the molding cavity is communicated with the pressing cavity, and the cross section of the molding cavity is larger than that of the pressing cavity; the upper molding part comprises an upper molding assembly and an upper molding sleeve which are relatively movable, the upper molding assembly and the lower molding act on the pressing cavity together, and the upper molding sleeve acts on the molding cavity.

According to the utility model discloses an embodiment, the upper die portion still includes the elastic component, and the upper die assembly is connected in elastic component one side butt, and the die sleeve is connected in its opposite side butt.

According to the utility model discloses an embodiment, the type lantern ring is equipped with first boss, and first boss activity is in type subassembly, and type subassembly is gone up in first boss butt.

According to the utility model discloses an embodiment, the type of going up subassembly includes type of going up and type of going up gland, and the type of going up can dismantle to be connected in type of going up gland, and the type of going up runs through the type cover, and the type of going up acts on the suppression chamber with type down jointly, and the type of going up cover is located to the type of going up cover, and type of going up gland and type of going up cover relative activity.

According to the utility model discloses an embodiment, the upper shaping piece includes upper shaping lid and upper shaping post, and upper shaping lid can be dismantled and connect in upper shaping gland, and the upper shaping post sets up in the upper shaping lid, and the upper shaping post runs through the upper shaping cover, and the activity of upper shaping post sets up in the suppression chamber.

According to the utility model discloses an embodiment, the upper die cover is equipped with movable chamber, and the activity of upper die cover sets up in movable chamber.

According to the utility model discloses an embodiment, the lower type is including lower type lid and lower type post, and lower type lid sets up in lower type post, and lower type post and last type subassembly act on the suppression chamber jointly.

The utility model discloses beneficial effect does:

in the pressing process of the powder metallurgy die, one part of powder is in a forming cavity, and the other part of powder is in a pressing cavity; the powder in molding chamber is suppressed with the female type by last type cover jointly, and the powder in pressing chamber is suppressed by last type subassembly and lower type jointly, because the powder in pressing chamber receives bigger pressure than the powder in molding chamber, consequently, the powder density in pressing chamber is bigger for the powder density in molding chamber, after the powder in pressing chamber and the powder in molding chamber are integrated through the diffusion, make interior tight product of pine outward, promote performance such as product toughness, improve the holistic intensity of product, and then reduce the spoilage in the product use, reduce the change number of times, enterprise's manufacturing cost has been practiced thrift greatly.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic view showing the working state of a powder metallurgy die in an embodiment;

FIG. 2 is a sectional view of the upper part of the embodiment;

FIG. 3 is a sectional view of the upper cover in the embodiment;

FIG. 4 is a sectional view of the upper core in the embodiment.

Description of reference numerals:

1. female type; 11. a molding cavity; 12. a pressing cavity; 2. a cope portion; 21. a cope assembly; 211. an upper profile; 2111. an upper mold cover; 2112. molding a column; 212. an upper-type gland; 2121. a movable cavity; 21211. a landing; 22. a molding sleeve is arranged; 221. a first boss; 222. a through hole; 23. an elastic member; 3. molding; 31 a lower cover; 32. a lower molding column; 4. and (3) powder lot.

Detailed Description

In the following description, numerous implementation details are set forth in order to provide a more thorough understanding of the present invention. It should be understood, however, that these implementation details should not be used to limit the invention. That is, in some embodiments of the invention, details of these implementations are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for description purposes, not specifically referring to the order or sequence, and are not intended to limit the present invention, but only to distinguish the components or operations described in the same technical terms, and are not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1, fig. 1 is a schematic diagram illustrating a working state of a powder metallurgy die in an embodiment. As shown in the figure, the powder metallurgy die comprises a female die 1, an upper die part 2 and a lower die 3, wherein the upper die part 2 and the lower die 3 are movably arranged on the female die 1; the female die 1 is provided with a forming cavity 11 and a pressing cavity 12, the forming cavity 11 is used for forming one part of powder 4, the pressing cavity 12 is used for forming the other part of powder 4, the forming cavity 11 is communicated with the pressing cavity 12, and the cross section of the forming cavity 11 is larger than that of the pressing cavity 12; the upper mould part 2 comprises an upper mould component 21 and an upper mould sleeve 22, the upper mould component 21 and the upper mould sleeve 22 are movably arranged, the upper mould component 21 and the lower mould 3 jointly act on the pressing cavity 12, and the upper mould sleeve 22 acts on the forming cavity 11.

In the product pressing process, powder 4 is respectively placed into a forming cavity 11 and a pressing cavity 12, an upper mold assembly 21 drives an upper mold sleeve 22 to move towards the direction close to the forming cavity 11, the upper mold sleeve 22 is abutted against the forming cavity 11 to press the powder 4 of the forming cavity 11, the upper mold assembly 21 continues to move to the pressing cavity 12, the powder 4 of the pressing cavity 12 is acted on and formed by the upper mold assembly 21 and a lower mold 3 together, then the upper mold assembly 21 moves towards the initial position, the lower mold 3 moves towards the direction of the movement of the upper mold assembly 21, the powder 4 formed by the pressing cavity 12 is pushed to the forming cavity 11, and the powder 4 of the forming cavity 11 is in close contact with the powder 4 of the pressing cavity 12; the powder 4 of the forming chamber 11 is subjected to a lower pressure, while the powder 4 of the pressing chamber 12 is subjected to a higher pressure, so that the powder 4 of the pressing chamber 12 has a higher density with respect to the powder 4 of the forming chamber 11; after the powder 4 of the two parts are spliced together, the powder 4 formed in the pressing cavity 12 diffuses towards the powder 4 formed in the forming cavity 11 due to the density difference of the two parts, and then the two parts are integrated into a whole, so that the formed product has the characteristic of tight inside and loose outside. Specifically, in the product with the tight inside and the loose outside, the middle part of the product has higher rigidity relative to the outside of the product, the outside of the product has higher toughness relative to the middle part of the product, the high-rigidity part of the product bears higher pressure, the high-toughness part of the product bears higher deformation, and the overall strength of the product is improved through the matching of the high rigidity and the high toughness.

In particular, the forming cavity 11 is arranged in the center of one side of the female die 1, and the pressing cavity 12 is arranged in the center of the other side of the female die 1. The distance from the center to the edge is consistent, even if the female die 1 rotates, the position of the center cannot be changed, the upper die part 2 and the lower die part 3 can accurately press the forming cavity 11 and the pressing cavity 12, in the pressing process, the upper die part 2 and the lower die part 3 act on the center of the female die 1, the stress positions are corresponding, the acting force takes the circle center as the center, the circumference is uniformly diffused, and the acting force applied to the parts symmetrical to the circle center is the same, so that the female die 1 can be stably kept at the corresponding positions; during pressing, the upper die sleeve 22 on the forming cavity 11 and the upper die assembly 21 and the lower die 3 in the pressing cavity 12 vibrate, and if the distance from the center of the forming cavity 11 to the periphery of the female die 1 is not equal, i.e. the forming cavity 11 is not located at the center of the female die 1, the side of the forming cavity 11, which is short in distance from the periphery of the female die 1, can bear smaller pressure, is easy to damage, so that the female die 1 is damaged, and the service life of the female die 1 is influenced; similarly, the pressing cavity 12, if not arranged at the center of the female mold 1, will also affect the service life of the female mold 1.

Referring to fig. 2 and 3, fig. 2 is a top cross-sectional structural view of an embodiment; FIG. 3 is a sectional view of the upper cover in the embodiment; FIG. 4 is a sectional view of the upper core in the embodiment. Referring to fig. 1 again, as shown in the figure, the upper mold assembly 21 includes an upper mold 211 and an upper mold press cover 212, the upper mold 211 is connected with the upper mold press cover 212 by bolts, the upper mold 211 penetrates through the upper mold sleeve 22, the upper mold 211 can move in the pressing cavity 12, the upper mold press cover 212 is sleeved on the upper mold sleeve 22, the upper mold press cover 212 and the upper mold sleeve 22 can move relatively, and the upper mold 211 and the lower mold 3 jointly act on the powder 4 in the pressing cavity 12. The upper part 211 comprises an upper cover 2111 and an upper post 2112, the upper cover 2111 is connected with the upper gland 212 by bolts, one end of the upper post 2112 is connected with the upper cover 2111, and the other end and the lower post 3 jointly act on the powder 4 in the pressing cavity 12. The upper mold press cover 212 is provided with a movable cavity 2121, one end of the upper mold sleeve 22 is movably arranged in the movable cavity 2121, the other end of the upper mold sleeve passes through the upper mold press cover 212, and the upper mold column 2112 passes through the upper mold sleeve 22. Specifically, the center of the upper molding sleeve 22 is provided with a through hole 222, and the upper molding post 2112 is movable in the through hole 222.

The upper molding sleeve 22 is provided with a first boss 221, preferably, a step 21211 is provided in the movable cavity 2121, the first boss 221 can move in the movable cavity 2121, and the first boss 221 abuts against the step 21211, so that the first boss 221 cannot penetrate through the movable cavity 2121 during the movement process through the abutting arrangement of the first boss 221 and the step 21211, and the upper molding sleeve 22 is prevented from falling off from the movable cavity 2121.

Preferably, the cope portion 2 further includes an elastic member 23, and one side of the elastic member 23 abuts against the cope 2111 and the other side thereof abuts against the first boss 221. The upper mold cover 2111 compresses the elastic component 23, the elastic component 23 acts on the first boss 221, the first boss 221 drives the upper mold sleeve 22 to act on the powder 4 in the molding cavity 11, and when the elastic component 23 is compressed, the upper mold column 2112 gradually penetrates through the upper mold sleeve 22 and acts on the powder 4 in the pressing cavity 12. Preferably, the elastic member 23 is a spring.

Referring to fig. 1 again, as shown in the figure, the lower mold 3 includes a lower mold cover 31 and a lower mold column 32, the lower mold cover 31 is disposed on the lower mold column 32, and the lower mold column 32 and the upper mold column 2112 jointly act on the powder 4 in the pressing chamber 12. Preferably, the lower mold pillar 32 can penetrate through the pressing cavity 12 and the molding cavity 11 at the same time, and after the product is manufactured, the lower mold pillar 32 can eject the product out of the molding cavity 11, so that the blanking is facilitated.

In the product pressing process, powder 4 is respectively placed into the forming cavity 11 and the pressing cavity 12, the upper mold cover 2111 moves towards the direction close to the pressing cavity 12, and the upper mold sleeve 22 is abutted against the powder 4 in the forming cavity 11; then, the upper mold cover 2111 starts to compress the elastic member 23, the elastic member 23 acts on the first boss 221, the first boss 221 acts on the upper mold sleeve 22, and the upper mold sleeve 22 presses the powder 4 in the molding cavity 11; while the upper mold cover 2111 compresses the elastic member 23, the upper mold assembly 21 continues to move towards the pressing cavity 12, the step 21211 starts to move away from the first boss 221, the upper mold post 2112 gradually penetrates through the through hole 222, the upper mold post 2112 continues to move towards the pressing cavity 12, and the upper mold post 2112 and the lower mold post 32 jointly act on the powder 4 in the pressing cavity 12 to form the powder; then, the upper molding column 2112 moves a certain distance towards the direction of the initial position, the lower molding 32 moves a certain distance towards the direction of the movement of the upper molding column 2112, the powder 4 formed in the pressing cavity 12 is pushed to the forming cavity 11, and the powder 4 in the forming cavity 11 and the powder 4 in the pressing cavity 12 are diffused and fused into a whole to form a product with tight inside and loose outside; the upper post 2112 moves toward the initial position, the landing 21211 begins to move closer to the first boss 221 until contacting the first boss 221, the landing 21211 then abuts the first boss 221 and moves toward the initial position, the lower post 32 continues to move toward the upper post 2112, and the lower post 32 ejects the product out of the molding cavity 11.

In conclusion, in the pressing process of the powder metallurgy die, one part of powder is in the forming cavity, and the other part of powder is in the pressing cavity; the powder in molding chamber is suppressed with the female type by last type cover jointly, and the powder in pressing chamber is suppressed by last type subassembly and lower type jointly, because the powder in pressing chamber receives bigger pressure than the powder in molding chamber, consequently, the powder density in pressing chamber is bigger for the powder density in molding chamber, after the powder in pressing chamber and the powder in molding chamber are integrated through the diffusion, make interior tight product of pine outward, promote performance such as product toughness, improve the holistic intensity of product, and then reduce the spoilage in the product use, reduce the change number of times, enterprise's manufacturing cost has been practiced thrift greatly.

The above is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A powder metallurgy die, comprising: the female mould comprises a female mould (1), an upper mould part (2) and a lower mould (3), wherein the upper mould part (2) and the lower mould (3) are movably arranged on the female mould (1); the female die (1) is provided with a forming cavity (11) and a pressing cavity (12), the forming cavity (11) is communicated with the pressing cavity (12), and the cross section of the forming cavity (11) is larger than that of the pressing cavity (12); the upper mould part (2) comprises an upper mould component (21) and an upper mould sleeve (22) which are relatively movable, the upper mould component (21) and the lower mould (3) jointly act on the pressing cavity (12), and the upper mould sleeve (22) acts on the forming cavity (11).

2. Powder metallurgy die according to claim 1, characterized in that the cope (2) further comprises an elastic member (23), the elastic member (23) abutting the cope assembly (21) on one side and the cope (22) on the other side.

3. Powder metallurgy die according to claim 1, wherein the upper die sleeve (22) is provided with a first boss (221) around it, the first boss (221) being movable with respect to the upper die assembly (21), and the first boss (221) abutting the upper die assembly (21).

4. The powder metallurgy die according to claim 1, wherein the upper die assembly (21) comprises an upper die (211) and an upper die cover (212), the upper die (211) is detachably connected to the upper die cover (212), the upper die (211) penetrates through the upper die sleeve (22), the upper die (211) and the lower die (3) jointly act on the pressing cavity (12), the upper die cover (212) is sleeved on the upper die sleeve (22), and the upper die cover (212) and the upper die sleeve (22) are relatively movable.

5. The powder metallurgy die according to claim 4, wherein the upper shaping member (211) comprises an upper shaping cover (2111) and upper shaping columns (2112), the upper shaping cover (2111) is detachably connected to the upper shaping cover (212), the upper shaping columns (2112) are arranged on the upper shaping cover (2111), the upper shaping columns (2112) penetrate through the upper shaping sleeve (22), and the upper shaping columns (2112) are movably arranged in the pressing cavity (12).

6. Powder metallurgy die according to claim 4, characterized in that the upper gland (212) is provided with a movable cavity (2121), the upper jacket (22) being movably arranged in the movable cavity (2121).

7. Powder metallurgy die according to any one of claims 1 to 6, wherein the drag (3) comprises a drag cover (31) and a drag column (32), the drag cover (31) being arranged on the drag column (32), the drag column (32) acting together with the cope assembly (21) on the pressing chamber (12).