CN213997790U - Die sleeve for powder forming die - Google Patents
Die sleeve for powder forming die Download PDFInfo
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- CN213997790U CN213997790U CN202022966591.1U CN202022966591U CN213997790U CN 213997790 U CN213997790 U CN 213997790U CN 202022966591 U CN202022966591 U CN 202022966591U CN 213997790 U CN213997790 U CN 213997790U
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- fixing part
- die
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- mold core
- reducing structure
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Abstract
The utility model discloses a die sleeve for a powder forming die, which comprises a die sleeve body and a fixed part; the die sleeve body comprises a first body and a second body, one end of the first body is arranged at one end of the second body, and the first body and the second body are integrally formed; the fixing part is arranged around the peripheral wall of the second body and integrally formed with the second body, and the fixing part is provided with a force reducing structure. The force reducing structure weakens the tightening force of the fixing part, so that the tightening force of the hole wall formed by the fixing part and the second body is weakened, the difference between the tightening force of the hole wall formed by the fixing part and the second body to the mold core and the tightening force of the first body to the mold core is reduced, the uneven stress of the mold core is reduced, the mold core is prevented from cracking, and the service life of the mold core is prolonged.
Description
Technical Field
The utility model relates to a powder forming die field particularly, relates to a die sleeve for powder forming die.
Background
The powder forming die is used for making blanks through powder metallurgy, and is provided with a female die, the female die comprises a die sleeve and a die core, the die sleeve is provided with an inner hole matched with the die core, the die core is sleeved in the inner hole, and the die core and the die sleeve are in interference fit. When powder is pressed, the female die needs to move under the drive of the press.
In the prior art, in order to fix the female die to the press, as shown in fig. 1, one end of the die sleeve is designed to be step-shaped, specifically, the die sleeve includes a die sleeve body 1 and a fixing portion 2, the die sleeve body 1 includes a first body 11 and a second body 12, one end of the first body 11 is disposed at one end of the second body 12, the fixing portion 2 is annularly disposed at the outer side of the second body 12, and the fixing portion is clamped to the press. Thus, the thickness of the second body 12 and the fixing portion 2 is large, and the thickness of the first body 11 is small.
Because the mold core and the mold sleeve are in interference fit, the mold sleeve applies a clamping force to the mold core, the part with the large wall thickness has the large clamping force to the mold core, and the part with the small wall thickness has the small clamping force to the mold core, so that the stress of the mold core is seriously uneven, cracks are easy to appear on the mold core, and the service life of the mold core is shortened.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides a die sleeve for a powder forming die, which comprises a die sleeve body and a fixed part; the die sleeve body comprises a first body and a second body, one end of the first body is arranged at one end of the second body, and the first body and the second body are integrally formed; the fixing part is arranged around the peripheral wall of the second body and integrally formed with the second body, and the fixing part is provided with a force reducing structure.
Preferably, the force reducing structure is a hole.
Preferably, the force reducing structures are through holes, the force reducing structures penetrate through the upper surface and the lower surface of the fixing portion, and the force reducing structures are uniformly distributed on the fixing portion.
Preferably, the force reducing structures are blind holes, and the force reducing structures are uniformly distributed on the upper surface, the lower surface and/or the side wall of the fixing part.
Preferably, the force reducing structure is a groove.
Preferably, the force reducing structure is an annular groove, and the force reducing structure is arranged on the upper surface, the lower surface and/or the side wall of the fixing part.
Preferably, the force reducing structure is a notch.
Preferably, the force reducing structures penetrate through the upper surface and the lower surface of the fixing part, and the force reducing structures are uniformly wound on the fixing part.
Preferably, the force reducing structure is arranged on the upper surface or the lower surface of the fixing part, and the force reducing structure is uniformly wound on the fixing part.
Compared with the prior art, the force reducing structure weakens the tightening force of the fixed part, thereby weakening the tightening force of the hole wall formed by the fixed part and the second body, reducing the difference between the tightening force of the hole wall formed by the fixed part and the second body to the mold core and the tightening force of the first body to the mold core, reducing the uneven stress of the mold core, avoiding the occurrence of cracks on the mold core and prolonging the service life of the mold core.
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 diagram of a prior art structure;
FIG. 2 is a schematic structural view of a die case according to embodiments 1 and 2;
FIG. 3 is a schematic view showing the structure of a die case according to example 3;
FIG. 4 is a second schematic view of the structure of the die case in example 3;
FIG. 5 is a schematic view showing the structure of a die case according to example 4;
FIG. 6 is a schematic view showing the structure of a master model in example 5.
Reference numerals: 1, a die sleeve body; 11 a first body; 12 a second body; 2, a fixed part; 21 force reducing structure.
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.
The description of the present invention as to "first", "second", etc. is for descriptive purposes only and not for purposes of particular reference to an order or sequence, nor for purposes of limitation, and is intended to distinguish between components or operations described in the same technical language and is not intended to indicate or imply relative importance or imply 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.
For further understanding of the contents, features and effects of the present invention, the following embodiments are exemplified in conjunction with the accompanying drawings as follows:
example 1:
referring to fig. 2, fig. 2 is a schematic structural diagram of the mold chase in embodiments 1 and 2. The surface close to the first body 11 is defined as an upper surface, and the surface far from the first body 11 is defined as a lower surface. The embodiment provides a die sleeve for a powder forming die, which comprises a die sleeve body 1 and a fixing part 2, wherein the fixing part 2 is fixedly connected with the peripheral wall of the die sleeve body 1.
The die sleeve body 1 comprises a first body 11 and a second body 12, one end of the first body 11 is arranged at one end of the second body 12, and the first body 11 and the second body 12 are integrally formed. The fixing portion 2 is disposed around the outer peripheral wall of the second body 12, and the fixing portion 2 and the second body 12 are integrally formed. The anchoring portion 2 is provided with force-reducing structures 21, which force-reducing structures 21 serve to weaken the tightening force of the anchoring portion 2. Preferably, the material of the die sleeve body 1 is the same as that of the fixing portion 2, and the die sleeve body 1 and the fixing portion 2 are integrally formed.
Furthermore, the force reducing structure 21 is a through hole, the through hole penetrates through the upper surface and the lower surface of the fixing part 2, and the through hole is uniformly and annularly arranged on the fixing part 2.
The through holes weaken the tightening force of the fixing part, so that the hole wall tightening force formed by the fixing part and the second body is weakened, and the difference between the tightening force of the hole wall formed by the fixing part and the second body to the mold core and the tightening force of the first body to the mold core is reduced.
In conclusion, the material reducing structure reduces the stress unevenness of the mold core, avoids the mold core from cracking and prolongs the service life of the mold core.
Example 2:
referring to fig. 2, a surface close to the first body 11 is defined as an upper surface, and a surface far from the first body 11 is defined as a lower surface. The embodiment provides a die sleeve for a powder forming die, which comprises a die sleeve body 1 and a fixing part 2, wherein the fixing part 2 is fixedly connected with the peripheral wall of the die sleeve body 1.
The die sleeve body 1 comprises a first body 11 and a second body 12, one end of the first body 11 is arranged at one end of the second body 12, and the first body 11 and the second body 12 are integrally formed. The fixing portion 2 is disposed around the outer peripheral wall of the second body 12, and the fixing portion 2 and the second body 12 are integrally formed. The anchoring portion 2 is provided with force-reducing structures 21, which force-reducing structures 21 serve to weaken the tightening force of the anchoring portion 2. Preferably, the material of the die sleeve body 1 is the same as that of the fixing portion 2, and the die sleeve body 1 and the fixing portion 2 are integrally formed.
Further, the force reducing structure 21 is a blind hole, and the blind hole is uniformly distributed on at least one of the upper surface, the lower surface and the side wall of the fixing portion 2.
The blind hole weakens the tightening force of the fixing part, thereby weakening the hole wall tightening force formed by the fixing part and the second body, and reducing the difference between the tightening force of the hole wall formed by the fixing part and the second body to the mold core and the tightening force of the first body to the mold core.
In conclusion, the material reducing structure reduces the stress unevenness of the mold core, avoids the mold core from cracking and prolongs the service life of the mold core.
Example 3:
referring to fig. 3, fig. 3 is a first schematic structural view of a mold sleeve in embodiment 3, and fig. 4 is a second schematic structural view of the mold sleeve in embodiment 3. The surface close to the first body 11 is defined as an upper surface, and the surface far from the first body 11 is defined as a lower surface. The embodiment provides a die sleeve for a powder forming die, which comprises a die sleeve body 1 and a fixing part 2. The fixed part 2 is fixedly connected with the peripheral wall of the die sleeve body 1.
The die sleeve body 1 comprises a first body 11 and a second body 12, one end of the first body 11 is arranged at one end of the second body 12, and the first body 11 and the second body 12 are integrally formed. The fixing portion 2 is disposed around the outer peripheral wall of the second body 12, and the fixing portion 2 and the second body 12 are integrally formed. The anchoring portion 2 is provided with force-reducing structures 21, which force-reducing structures 21 serve to weaken the tightening force of the anchoring portion 2. Preferably, the material of the die sleeve body 1 is the same as that of the fixing portion 2, and the die sleeve body 1 and the fixing portion 2 are integrally formed.
Further, a direction parallel to the axial direction of the die case is defined as a longitudinal direction. The force reducing structure 21 is a groove, and the groove is disposed on at least one of the upper surface, the lower surface and the sidewall of the fixing portion, for example, the groove is disposed on the upper surface and the sidewall of the fixing portion. Preferably, the groove is an annular groove. The shape of the longitudinal section of the annular groove can be circular arc, V-shaped, trapezoid or T-shaped, and preferably, the shape of the longitudinal section of the annular groove is circular arc.
The groove weakens the tightening force of the fixing part, so that the hole wall tightening force formed by the fixing part and the second body is weakened, and the difference between the tightening force of the hole wall formed by the fixing part and the second body to the mold core and the tightening force of the first body to the mold core is reduced.
In conclusion, the material reducing structure reduces the stress unevenness of the mold core, avoids the mold core from cracking and prolongs the service life of the mold core.
Example 4:
referring to fig. 5, fig. 5 is a schematic structural view of a die sleeve in embodiment 4. The surface close to the first body 11 is defined as an upper surface, and the surface far from the first body 11 is defined as a lower surface. The embodiment provides a die sleeve for a powder forming die, which comprises a die sleeve body 1 and a fixing part 2. The fixed part 2 is fixedly connected with the peripheral wall of the die sleeve body 1.
The die sleeve body 1 comprises a first body 11 and a second body 12, one end of the first body 11 is arranged at one end of the second body 12, and the first body 11 and the second body 12 are integrally formed. The fixing portion 2 is disposed around the outer peripheral wall of the second body 12, and the fixing portion 2 and the second body 12 are integrally formed. The anchoring portion 2 is provided with force-reducing structures 21, which force-reducing structures 21 serve to weaken the tightening force of the anchoring portion 2. Preferably, the material of the die sleeve body 1 is the same as that of the fixing portion 2, and the die sleeve body 1 and the fixing portion 2 are integrally formed.
Furthermore, the force reducing structure 21 is a notch, the notch penetrates through the upper and lower surfaces of the fixing portion 2, and the notch is uniformly wound on the fixing portion 2.
The gap weakens the tightening force of the fixing part, thereby weakening the hole wall tightening force formed by the fixing part and the second body, and reducing the difference between the tightening force of the hole wall formed by the fixing part and the second body to the mold core and the tightening force of the first body to the mold core.
In conclusion, the material reducing structure reduces the stress unevenness of the mold core, avoids the mold core from cracking and prolongs the service life of the mold core.
Example 5:
referring to fig. 6, fig. 6 is a schematic structural view of a master mold in embodiment 5. The surface close to the first body 11 is defined as an upper surface, and the surface far from the first body 11 is defined as a lower surface. The embodiment provides a die sleeve for a powder forming die, which comprises a die sleeve body 1 and a fixing part 2. The fixed part 2 is fixedly connected with the peripheral wall of the die sleeve body 1.
The die sleeve body 1 comprises a first body 11 and a second body 12, one end of the first body 11 is arranged at one end of the second body 12, and the first body 11 and the second body 12 are integrally formed. The fixing portion 2 is disposed around the outer peripheral wall of the second body 12, and the fixing portion 2 and the second body 12 are integrally formed. The anchoring portion 2 is provided with force-reducing structures 21, which force-reducing structures 21 serve to weaken the tightening force of the anchoring portion 2. Preferably, the material of the die sleeve body 1 is the same as that of the fixing portion 2, and the die sleeve body 1 and the fixing portion 2 are integrally formed.
Further, the force reducing structure 21 is a notch, the notch is provided with an upper surface or a lower surface of the fixing portion 2, and the notch is uniformly wound on the fixing portion 2.
The gap weakens the tightening force of the fixing part, thereby weakening the hole wall tightening force formed by the fixing part and the second body, and reducing the difference between the tightening force of the hole wall formed by the fixing part and the second body to the mold core and the tightening force of the first body to the mold core.
In conclusion, the material reducing structure reduces the stress unevenness of the mold core, avoids the mold core from cracking and prolongs the service life of the mold core.
The above description 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 (9)
1. A die sleeve for a powder forming die is characterized by comprising
The die sleeve comprises a die sleeve body (1), wherein the die sleeve body (1) comprises a first body (11) and a second body (12), one end of the first body (11) is arranged at one end of the second body (12), and the first body (11) and the second body (12) are integrally formed; and
the fixing part (2) is arranged around the peripheral wall of the second body (12), the fixing part (2) and the second body (12) are integrally formed, and the fixing part (2) is provided with a force reducing structure (21).
2. The die case for a powder molding die according to claim 1, characterized in that: the force reducing structure (21) is a hole.
3. The die case for a powder molding die according to claim 2, characterized in that: the force reducing structure (21) is a through hole, the force reducing structure (21) penetrates through the upper surface and the lower surface of the fixing part (2), and the force reducing structure (21) is uniformly distributed on the fixing part (2).
4. The die case for a powder molding die according to claim 2, characterized in that: the force reducing structures (21) are blind holes, and the force reducing structures (21) are uniformly distributed on the upper surface, the lower surface and/or the side wall of the fixing part (2).
5. The die case for a powder molding die according to claim 1, characterized in that: the force reducing structure (21) is a groove.
6. The die case for a powder molding die according to claim 5, characterized in that: the force reducing structure (21) is an annular groove, and the force reducing structure (21) is arranged on the upper surface, the lower surface and/or the side wall of the fixing part (2).
7. The die case for a powder molding die according to claim 1, characterized in that: the force reducing structure (21) is a notch.
8. The die case for a powder molding die according to claim 7, characterized in that: the force reducing structure (21) penetrates through the upper surface and the lower surface of the fixing part (2), and the force reducing structure (21) is uniformly wound on the fixing part (2).
9. The die case for a powder molding die according to claim 7, characterized in that: the force reducing structure (21) is arranged on the upper surface or the lower surface of the fixing part (2), and the force reducing structure (21) is uniformly wound on the fixing part (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022966591.1U CN213997790U (en) | 2020-12-10 | 2020-12-10 | Die sleeve for powder forming die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022966591.1U CN213997790U (en) | 2020-12-10 | 2020-12-10 | Die sleeve for powder forming die |
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| Publication Number | Publication Date |
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| CN213997790U true CN213997790U (en) | 2021-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022966591.1U Active CN213997790U (en) | 2020-12-10 | 2020-12-10 | Die sleeve for powder forming die |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112536438A (en) * | 2020-12-10 | 2021-03-23 | 博罗县何氏模具制造有限公司 | Die sleeve for powder forming die |
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2020
- 2020-12-10 CN CN202022966591.1U patent/CN213997790U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112536438A (en) * | 2020-12-10 | 2021-03-23 | 博罗县何氏模具制造有限公司 | Die sleeve for powder forming die |
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