CN219324678U

CN219324678U - Stamping die

Info

Publication number: CN219324678U
Application number: CN202320372557.2U
Authority: CN
Inventors: 涂慕炘
Original assignee: Xiamen Ruiji Industry & Trade Co ltd
Current assignee: Ruiji (Xiamen) Electromechanical Industry Co.,Ltd.
Priority date: 2023-03-03
Filing date: 2023-03-03
Publication date: 2023-07-11
Anticipated expiration: 2033-03-03

Abstract

The utility model discloses a stamping die, which comprises an upper die set and a lower die set, wherein the upper die set is provided with a stamping body, a hexagonal die core and a stripper ring, and the stamping body is provided with an upper die groove; the hexagonal die core is fixed in the upper die groove, the stripping ring is movably arranged in the upper die groove, and the hexagonal die core passes through the stripping ring; the lower die set is provided with a punching seat and a lower die core, and the punching seat is provided with a lower die groove; the lower die core is assembled on the stamping seat and is positioned in the lower die groove; the lower die core is provided with an annular forming boss, and an inner hole of the forming boss is a product positioning hole; and the hexagonal die core is punched towards the product positioning hole, and the stripping ring is abutted against the forming boss. The utility model realizes one-time processing and forming of the product by utilizing the matching of the upper mold core and the lower mold core, thereby improving the processing efficiency of the product, reducing the processing cost of the product, improving the processing precision and solving the technical problems existing in the prior art.

Description

Stamping die

Technical Field

The utility model relates to the field of dies, in particular to a special stamping die.

Background

As shown in fig. 1 and 2, the product a has an annular groove A1, and the bottom surface of the annular groove A1 is a spiral surface A2, and the product a needs to be machined and molded.

The existing processed product A needs two procedures, namely: the first pass: stamping and forming, namely stamping the raw materials into a T-shaped structure by using a stamping die, wherein the top of the T-shaped structure is provided with an inner hexagonal hole; after the first procedure is completed, the annular groove A1 and the spiral surface A2 are required to be milled and formed by a milling machine, obviously, the product A is processed by two groups of equipment, the precision of the product is directly reduced due to the conversion of the processing equipment, the error is increased, the product percent of pass is low, the processing efficiency is low and the cost is high.

How to perform one-time press forming processing on the product a, reducing cost, improving efficiency and improving processing precision of the product a is one of technical problems to be solved by those skilled in the art.

Disclosure of Invention

In order to solve the technical problems in the prior art, the utility model aims to provide a special stamping die

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

the utility model provides a stamping die, its includes module and lower module, wherein:

the upper die set is provided with a punching body, a hexagonal die core and a stripper ring, wherein the punching body is provided with an upper die groove; the hexagonal die core is fixed in the upper die groove, the stripping ring is movably arranged in the upper die groove, and the hexagonal die core passes through the stripping ring;

the lower die set is provided with a punching seat and a lower die core, and the punching seat is provided with a lower die groove; the lower die core is assembled on the stamping seat and is positioned in the lower die groove;

the lower die core is provided with an annular forming boss, and an inner hole of the forming boss is a product positioning hole;

and the hexagonal die core is punched towards the product positioning hole, and the stripping ring is abutted against the forming boss.

Further preferred is: the lower die core is in a round table shape, and the outer diameter of the lower die core is gradually increased along the stamping direction;

the lower die core is positioned through the compression ring.

Further preferred is: the diameter of the inner hole of the compression ring is gradually increased along the stamping direction;

the compression ring is sleeved outside the lower die core and driven by the punching body to extrude and position the lower die core.

Further preferred is: the side wall of the lower die groove is provided with a convex eave for limiting the displacement of the compression ring.

Further preferred is: the stamping body is provided with an upper template;

one end of the upper die plate is arranged in a protruding mode along the stamping direction and is inserted into the lower die groove to press the compression ring.

Further preferred is: the forming boss is circular, and the top surface of the forming boss is a spiral surface.

Further preferred is: the stamping seat comprises a lower die plate and a lower die seat, wherein:

the lower die plate is annular and is fixed on the lower die holder;

the lower die holder is provided with a relief hole which is communicated with the product positioning hole, and a thimble is arranged in the relief hole in a penetrating way;

the lower die holder is provided with an inner groove, the inner groove and the yielding holes are coaxially distributed, and one end of the lower die core is sunk into the inner groove.

Further preferred is: the stripper ring is driven by a stripper rod to displace in the upper die cavity.

Further preferred is: the stripping rod is a straight rod and penetrates through the punching body to be connected with the stripping ring.

Further preferred is: the hexagonal die core is a regular hexagonal prism, and one end of the hexagonal die core, which is close to the lower die set, is a forming end;

and stamping the forming end towards the product positioning hole.

After the technical scheme is adopted, compared with the background technology, the utility model has the following advantages:

the utility model realizes one-time processing and forming of the product A by utilizing the matching of the upper mold core and the lower mold core, thereby improving the processing efficiency of the product, reducing the processing cost of the product, improving the processing precision and solving the technical problems existing in the prior art.

Drawings

FIG. 1 is a schematic perspective view of the structure of product A;

FIG. 2 is a partial structural cross-sectional view of product A;

FIG. 3 is a schematic view of a stamping die according to an embodiment of the present utility model;

FIG. 4 is a schematic perspective view of a lower mold insert according to an embodiment of the present utility model;

fig. 5 is a schematic structural diagram of a second stamping die according to an embodiment of the present utility model;

fig. 6 is a schematic structural diagram of the lower module assembly positioning ring and the positioning fixture according to the embodiment of the utility model.

The reference numerals in the above description are as follows:

A. a product; a1, an annular groove; a2, spiral surface;

1. a positioning ring; 2. positioning jig;

110. an upper die holder; 120. an upper template; 130. an upper die sleeve; 140. an upper mold core; 141. a stripping ring; 142. a hexagonal mold core; 143. a stripping rod;

210. a lower die holder; 220. a lower template; 230. a lower mold core; 231. a clamp ring; 232. a lower die core; 233. forming a boss; 234. molding surface; 240. and (5) a thimble.

Detailed Description

The existing processing of the product A needs to be subjected to two groups of equipment to realize the processing of the product A, the conversion of the processing equipment directly leads to the reduction of the precision of the product, the increase of errors, and the low product qualification rate, the low processing efficiency and the high cost.

The inventor aims at the technical problems, and through analyzing reasons, the inventor finds a stamping die which comprises an upper die set and a lower die set, wherein:

In the technical scheme, the relatively movable hexagonal die core is matched with the stripping ring, the movable stripping ring is abutted against the pressing die core and matched with the lower die core to punch the annular groove and the spiral surface of the product A, and the fixed hexagonal die core is matched with the product positioning hole of the lower die core to punch to obtain the inner hexagonal hole required by the product A, so that the one-time punch forming of the product A is realized, the technical problem in the prior art is solved, and the efficient and low-cost product A processing forming is realized.

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

It should be noted that, in the present utility model, terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are all based on the orientation or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element of the present utility model must have a specific orientation, and thus should not be construed as limiting the present utility model.

Examples

As shown in fig. 1 and 2, a stamping die is used for stamping a product a, and can form an inner hexagonal structure and a spiral surface A2 on the bottom surface of an annular groove A1 in a one-step stamping manner in the stamping process, so that the processing efficiency is greatly improved, and the processing cost is reduced.

As shown in fig. 3, the stamping die comprises a lower die set and an upper die set, and the upper die set performs stamping operation towards the lower die set, so as to achieve the purpose of one-time stamping and forming of the product a.

Referring to fig. 2 to 6, the lower die set includes a stamping seat, a lower die core 230 and a thimble 240, the stamping seat includes a lower die base 210 and a lower die plate 220, the lower die plate 220 is fixed on the lower die base 210, a lower die cavity is formed in the stamping seat, the lower die core 230 is mounted in the lower die cavity, a yielding hole is formed in the bottom of the lower die cavity, and one end of the thimble 240 is inserted into the yielding hole.

As shown in fig. 2 to 6, the lower die holder 210 is a cylindrical block, an inner groove is formed at the center of the lower die holder, a through hole is formed at the bottom surface of the inner groove, the through hole is a through hole formed along the axial direction of the lower die holder 210, and the through hole is used for positioning the relief hole; the inner groove is a circular groove, the inner groove and the through hole are coaxially distributed and communicated, and the inner diameter of the inner groove is larger than the diameter of the through hole; the outer side wall of the lower die holder 210 has a protruding edge, which is an annular protrusion extending from the lower die holder 210 radially outward, and the protruding edge protrudes from the outer side wall of the lower die holder 210.

Referring to fig. 2 to fig. 6, the lower die plate 220 is locked on the lower die base 210 by a screw, the lower die plate 220 is a circular block, and the lower die plate 220 and the lower die base 210 are coaxially arranged and stacked on the lower die base 210; the through hole in the center of the lower die plate 220 is communicated with the inner groove and the through hole of the lower die holder 210, and the inner diameter of the through hole in the center of the lower die plate 220 is larger than the inner diameter of the inner groove; because the lower die plate 220 is fixed on the lower die plate 210, the bottom surface and the inner side surface of the inner groove and the top surface of the lower die plate 210 form a stepped positioning structure, and the top surface of the lower die plate 210 is the side surface contacting with the lower die plate 220. It should be noted that: the lower die plate 220 is provided with a protruding eave, the protruding eave is formed by extending the inner side surface of the lower die plate 220 along the radial direction thereof and towards the center direction of the lower die plate 220, the protruding eave is in a ring shape, and the inner diameter of a hole formed in the lower die plate 220 by the protruding eave is smaller than the through hole in the center of the lower die plate 220.

The through hole in the center of the lower die plate 220 and the lower die holder 210 enclose the lower die slot. The lower mold core 230 is assembled in the lower mold cavity; the bottom surface of the lower die groove is the bottom surface of the inner groove, and the abdication hole of the lower die groove is the through hole.

Referring to fig. 2 to 6, the lower mold core 230 includes a lower mold core 232 and a compression ring 231, the lower mold core 232 is a torus, an inner hole of the lower mold core 232 is a through product positioning hole, the compression ring 231 is sleeved on the outer side of the lower mold core, the compression ring 231 is limited to displace in the lower mold cavity by a protruding eave, and one end of the lower mold core 232 is inserted into the inner groove.

Referring to fig. 2 to 6, the lower die core 232 is in a shape of a circular table, the outer side wall of the lower die core is a cylindrical pressing outer wall, and the outer diameter of the pressing outer wall gradually increases along the stamping direction, that is: the lower mold core 232 has an outer side surface with an outer diameter gradually increasing; the compression ring 231 is disposed at the inner hole in the center of the lower die holder 210, and the axial displacement of the compression ring 231 is limited by the ledge, so that the compression ring 231 can only axially displace between the ledge and the top surface of the lower die holder 210, the inner side wall of the compression ring 231 is a compression inner wall, and the compression inner wall is an inner side surface adapted to the compression outer wall (i.e., the inner diameter of the compression ring 231 gradually increases along the axial direction thereof); the pressing inner wall of the pressing ring 231 abuts against the pressing outer wall of the lower die core 232, so that the pressing force is applied to the lower die core 232, the lower die core 232 is ensured to be stably positioned in the inner groove in the punching process, shaking and dislocation phenomena are avoided, and the processing precision is ensured.

It should be noted that: as shown in fig. 3, the lower die plate 220 encloses an annular counter bore on the top surface of the flange and the clamp ring 231, and the counter bore is a part of the lower die cavity.

Referring to fig. 2 to 6, the lower mold core 232 has a molding boss 233, the molding boss 233 is in a ring shape and is disposed near the upper mold module, the top surface of the molding boss 233 is a molding surface 234, the molding surface 234 is a spiral surface, and the thickness of the molding boss 233 is adapted to the width of the corresponding ring groove of the product a. It should be noted that: the shaped boss 233 is located within the counterbore. The specific method is as follows: the molding boss 233 is an annular boss structure obtained by extending the lower die insert 232 along the axial direction thereof toward the die opening direction, and the top surface of the upper die set facing the upper die set is the molding surface 234.

Referring to fig. 2 to 6, the ejector pin 240 has a cylindrical ejection end, and the ejection end is inserted into the through hole (i.e., the relief hole) and ejects the molded product a along the mold opening direction. The ejection end of the ejector pin 240 is matched with the hole of the lower die core 232, that is, when the product a is not ejected, the product a is inserted into the hole of the lower die core 232, and the ejection end of the ejector pin 240 is used for ejecting and demolding. Preferably: the ejector 240 is a barrel ejector 240.

Referring to fig. 2 to 6, the upper die set includes a punching body and an upper die core 140, where the punching body includes an upper die base 110, an upper die sleeve 130, and an upper die plate 120. The upper die holder 110 is installed in the upper die sleeve 130, the upper die holder 110 is connected with the upper die plate 120 and also installed in the upper die sleeve 130, and the upper die core 140 is assembled in an upper die groove formed in the upper die plate 120.

Referring to fig. 2 to fig. 6, the upper die holder 110 is cylindrical, and is provided with a mounting hole and a relief through hole, wherein the mounting hole is a through hole, and is disposed at the center of the upper die holder 110, and the relief through hole is located beside the mounting hole. The minimum inner diameter of the mounting hole is larger than the inner diameter of the abdication through hole. The plurality of abdication through holes are distributed in an annular array.

Referring to fig. 2 to 6, the upper die plate 120 is a circular block, which is stacked on and fixedly connected with the upper die holder 110, the upper die plate 120 is circular, one end of a central hole of the upper die plate is closed by a side surface of the upper die holder 110 to form the upper die cavity, and an axial section of the upper die cavity is in a T shape. The specific method is as follows: the axial section of the central hole is T-shaped, and the large diameter end thereof is disposed close to the upper die holder 110. In addition, a limiting convex ring is disposed on a side of the upper die plate 120, which is close to the upper die base 110, and the limiting convex ring is obtained by extending the upper die plate 120 along a radial direction thereof. The lower die plate 220 protrudes from the upper die sleeve 130, and the protruding portion of the lower die plate 220 can be inserted into the lower die groove, specifically: the protruding portion of the lower die plate 220 can be inserted into the counter bore, and then the compression ring is driven to compress and position the lower die core, and the upper die sleeve 130 is pressed against the upper die plate 120.

Referring to fig. 2 to 6, the upper die sleeve 130 is a torus, the upper die holder 110 and the upper die plate 120 which are fixedly connected are inserted into the upper die sleeve 130, and the limiting edge of the upper die plate 120 abuts against the limiting edge of the inner side wall of the upper die sleeve 130, so as to limit the upper die plate 120 along the stamping direction. It should be noted that: the upper die plate 120, the upper die holder 110 and the upper die sleeve 130 which are fixedly connected are relatively movable, namely: the upper die plate 120 is fixedly connected with the upper die holder 110 into a whole, and the whole is movably connected with the upper die sleeve 130, namely: the whole is displaced in the upper die sleeve along the stamping direction, and the whole is limited by the fact that the limiting convex edge of the upper die plate 120 is propped against the limiting edge of the inner side wall of the upper die sleeve 130, so that the whole cannot slide in the die opening process.

Referring to fig. 2 to 6, the upper mold core 140 includes a hexagonal mold core 142 and a stripper ring 141, wherein the hexagonal mold core 142 is a regular hexagonal prism, one end of the hexagonal mold core is inserted into the mounting hole and fixedly connected with the upper mold base 110 by a screw, and the other end is a forming end, and the forming end is pressed against the pre-punched raw material. The axial section of the stripper ring 141 is T-shaped, which is disposed in the lower cavity and sleeved outside the hexagonal mold core 142, a stripper rod 143 is further disposed on the stripper ring 141, and the stripper rod 143 passes through the relief through hole, extends into the upper cavity, and is pressed against the stripper ring 141. The specific method is as follows: the stripper ring 141 is a movable member and is movably displaced in the stamping direction in the upper die cavity, and the hexagonal die core 142 is a fixed member and is locked on the lower die holder 210. The hexagonal mold core 142 and the stripper ring 141 are in contact with the punched raw material in the process of the punch forming operation, and are pressed by the raw material to move along the reverse direction of the punching and approach to the upper mold, the stripper ring 141 moves towards the upper mold base 110 and simultaneously removes the forming end of the hexagonal mold core 142, and then the forming end of the hexagonal mold core 142 is arranged at the center of the raw material blank by using the punching force to punch a hole of an inner hexagon of the punching position; when the upper die set completes the stamping operation and moves away from the die in the opposite direction, the stripper ring 141 is driven by the stripper rod 143 to press against the product, at this time, the forming end of the hexagonal die core 142 is pulled out from the formed product, and the stripper ring 141 that continues the die opening displacement is also far away from the lower die set, so that the die opening is completed.

As shown in fig. 2 to 6, the process of punching the raw material using the above-mentioned punching die to obtain the product a is as follows:

and (3) raw material assembly: the raw materials to be punched and formed are filled into the product positioning holes of the lower die core.

And (3) stamping and forming:

the upper die holder and the upper die plate are driven to punch, at this time, the upper die plate 120 is inserted into the lower die groove and abuts against the compression ring 231, the compression ring 231 is driven by the lower die plate 220, the lower die core 232 is extruded and positioned, and the upper die core 140 is punched towards the raw materials;

the stripper ring 141 that continues to press and displace is pressed against the raw material to be limited and displaced, the hexagonal mold core 142 continues to press and operate, at this time, the forming end of the hexagonal mold core 142 is exposed, and the forming end of the hexagonal mold core 142 forms an inner hexagonal hole towards the center of the raw material;

meanwhile, the stripping ring driven by continuous stamping is matched with the lower die core, and the annular groove and the spiral surface of the groove bottom of the product A are stamped and formed, so that the stamping and forming of the product A are completed.

And (5) die sinking:

the upper die holder 110 is withdrawn from the lower die cavity, the stripper ring 141 is separated from the product a, and the hexagonal die core 142 is withdrawn from the inner hexagonal hole of the product a.

Demolding:

the ejector pins 240 eject the product A from the lower die core 232 to finish the demolding of the product A.

In order to ensure the accuracy of the lower die set in the processing, the accuracy of the assembly of the lower die set needs to be ensured, and the positioning ring 1 and the positioning jig 2 are assembled in the lower die set under the condition that the lower die set is not needed to be used, wherein the positioning ring 1 is a circular ring and is assembled in the counter bore, and the positioning ring 1 is protruded out of the lower die plate 220 for facilitating the disassembly of the positioning ring 1; the positioning jig 2 is a T-shaped column and is inserted into the lower mold core 232, and the positioning jig 2 is located in the positioning ring 1.

The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. Stamping die, its characterized in that: it includes module and lower module, wherein:

2. The stamping die of claim 1, wherein: the lower die core is in a round table shape, and the outer diameter of the lower die core is gradually increased along the stamping direction;

the lower die core is positioned through the compression ring.

3. The stamping die of claim 2, wherein: the diameter of the inner hole of the compression ring is gradually increased along the stamping direction;

4. A stamping die as in claim 3, wherein: the side wall of the lower die groove is provided with a convex eave for limiting the displacement of the compression ring.

5. A stamping die as in claim 3, wherein: the stamping body is provided with an upper template;

6. The stamping die of claim 1, wherein: the forming boss is circular, and the top surface of the forming boss is a spiral surface.

7. The stamping die of claim 1, wherein: the stamping seat comprises a lower die plate and a lower die seat, wherein:

the lower die plate is annular and is fixed on the lower die holder;

8. The stamping die of claim 1, wherein: the stripper ring is driven by a stripper rod to displace in the upper die cavity.

9. The stamping die of claim 8, wherein: the stripping rod is a straight rod and penetrates through the punching body to be connected with the stripping ring.

10. The stamping die of claim 1, wherein: the hexagonal die core is a regular hexagonal prism, and one end of the hexagonal die core, which is close to the lower die set, is a forming end;

and stamping the forming end towards the product positioning hole.