Cold heading stamping die with high product yield

Abstract

The utility model relates to the technical field of cold heading stamping dies, and discloses a cold heading stamping die with high product yield, which comprises a fixed sleeve shell, an inner die body and an end part fixed ring, the inner die body is in interference fit with the fixed sleeve shell from the inside of the fixed sleeve shell, the end part fixed ring is fixedly connected with the end part of the fixed sleeve shell through threads, and the end part fixed ring is fixedly connected with the end part of the fixed sleeve shell through threads. According to the cold heading stamping die with the high product yield, when metal part products are produced through the cold heading stamping die, for the products with the flat and thin ends, after stamping is completed, the multiple push rods are adopted for evenly applying force, the products can be pushed out and blanked, the product yield is high, and the product yield is high. The risk of deformation of the flat end part of the product can be effectively reduced, so that the yield of the produced stamping product is high; the push rod has two adjusting modes, the distance and the position are changed, adjusting and assembling can be conducted according to production requirements, and the adaptability to different products is high.

Description

Technical Field

[0001] The utility model relates to the technical field of cold heading stamping dies, in particular to a cold heading stamping die with a high product yield. Background Art

[0002] When using cold heading stamping dies to produce metal parts, for products with flat and thin ends, after stamping, the flat part will be firmly embedded in the arc-surface stamping groove under the influence of metal deformation, and it is necessary to use a push rod to push the stamped product in the direction of the arc-surface stamping groove to complete the blanking. For products with flat and thin ends, when a push rod is used to push and blank at a single force point, it will be subject to the friction force at the side wall of the arc-surface stamping groove, and there is a risk of deformation of the flat end of the stamped product, so that the stamped products produced do not meet the good product standards and have a low good product rate.

[0003] The utility model patent with publication number CN215279696U: A cold heading eccentric die, which discloses a technical solution with an ejector mechanism that can be used to eject parts;

[0004] Although the above utility model patent has the effect of facilitating the cutting of parts products, it still cannot solve the technical problem of high risk of deformation during cutting of metal parts products with flat and thin ends. Therefore, people are in urgent need of a cold heading stamping die with high product yield to solve the above problem. Utility Model Content

[0005] The utility model aims to provide a cold heading stamping die with high product yield, so as to solve the above-mentioned shortcomings in the prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cold heading stamping die with a high product yield rate comprises a movable die and a static die, the ends of the movable die and the static die are provided with a stamping groove, and the movable die and the static die are both connected to an external cold heading stamping device by transmission; the cold heading stamping device provides a transmission force to bring the stamping grooves of the movable die and the static die closer to each other, so as to realize effective stamping production of stamped products; the stamping groove of the static die is an arc-surface stamping groove, and the static die also comprises a fixed sleeve, an inner die body, and an end fixed ring, the inner die body is interference-fitted with the fixed sleeve from the inside of the fixed sleeve, the end fixed ring is fixed to the end of the fixed sleeve by a threaded connection, a push rod groove parallel to the axis of the inner die body is provided inside the inner die body, the end of the push rod groove is connected to the arc-surface stamping groove, and a push rod is slidably installed inside the push rod groove; more than three push rod grooves are provided;

[0007] For stamping products with flat ends and end thickness less than 2 mm, after stamping is completed, the flat part will be firmly embedded in the arc-surface stamping groove under the influence of metal deformation. It is necessary to use a push rod to push the stamping product in the direction of the arc-surface stamping groove to complete the blanking. For stamping products with an end thickness of less than 2 mm, when a push rod is used to push out the material at a single force point, it will be subject to the friction force at the side wall of the arc-surface stamping groove, and there is a risk of deformation of the flat end of the stamping product, so that the stamping products produced do not meet the good product standards and have a low good product rate.

[0008] By adopting the above solution, multiple push rods are used to push the stamped products out of the curved stamping groove. There is no need to worry about the deformation of the flat end of the stamped product due to the fast withdrawal speed and high friction during the withdrawal process. Metal parts with fragile structures can also be quickly withdrawn, with high production efficiency and high yield rate.

[0009] The three or more push rod grooves are distributed in a ring array with the axis of the inner mold body as the axis.

[0010] The adoption of the above technical solution can ensure that the stress points of the stamped products are evenly distributed when the stamped products are being withdrawn, which is beneficial to improving the withdrawal efficiency and the yield rate.

[0011] One push rod groove coincides with the axis of the inner mold body; the remaining push rod grooves are distributed in multiple groups of annular arrays with the axis of the inner mold body as the axis;

[0012] By adopting the above technical solution, when the stamped product is returned, the center of the flat end of the stamped product has a force point, which can further ensure that the force points are evenly distributed when the stamped product is returned, which is beneficial to improving the return efficiency and the yield rate.

[0013] All the push rods, at one end away from the arc surface stamping groove, pass through the same transmission connection block, and the transmission connection block is connected to the push rod transmission mechanism of the external cold heading and stamping equipment; the push rod can slide in the direction approaching or away from the arc surface stamping groove in the through hole penetrated by the transmission connection block.

[0014] The through hole is a push rod adjustment groove, and the push rod can move in the push rod adjustment groove in a direction close to or away from the axis of the transmission connection block to adjust the position of the transmission connection block, thereby adjusting the spacing between all push rods, and has strong adaptability to stamping products of different sizes; when it is necessary to replace the production product, the inner mold body in the static mold is replaced with an inner mold body with a shape required for production in the arc surface stamping groove, and the spacing between the push rods is adjusted to make the push force points of the stamping product uneven;

[0015] The push rod is fixed inside the push rod adjustment groove by a fastening component.

[0016] The fastening component includes a thread and a nut. A thread is provided on the side wall of the push rod near the transmission connection block, and nuts connected to the thread are respectively provided on both sides of the transmission connection block. After the push rod is adjusted to the required position, the nuts on both sides of the transmission connection block are screwed to make the two nuts approach each other and close to the transmission connection block, and the static friction between the nut and the transmission connection block is used to complete the fixing effect of the push rod position.

[0017] For stamping products with curved stamping surfaces, different push rods are adjusted to different positions along the axis of the inner mold body so that all push rods are close to one end of the curved stamping groove and can be combined into a distribution shape corresponding to the curved surface of the curved stamping groove, thereby improving the adaptability to pushing and unloading uneven products.

[0018] Beneficial effects: In the above technical scheme, the utility model provides a cold heading stamping die with high product yield, which solves the technical problem of the existing technology that the risk of deformation is high when blanking metal parts with flat and thin ends; when using the cold heading stamping die to produce metal parts, for products with flat and thin ends, after the stamping is completed, a method of uniformly applying force by multiple push rods is adopted to achieve the product's push and blanking, which can effectively reduce the risk of deformation of the flat end of the product, so that the stamping products produced have a high yield;

[0019] Furthermore, the push rod of the utility model has two adjustment modes to achieve changes in spacing and position, can be adjusted and assembled according to production requirements, and has strong adaptability to different products. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] Figure 1 The overall structural diagram provided for the embodiment of the utility model;

[0022] Figure 2 A schematic diagram of the overall structure disassembly provided for an embodiment of the utility model;

[0023] Figure 3 A schematic diagram of the overall structure provided by an embodiment of the utility model;

[0024] Figure 4 A schematic diagram of a right side cross-sectional structure of a transmission connection block provided in an embodiment of the utility model;

[0025] Figure 5 The embodiment of the utility model provides Figure 3 A magnified image of area A.

[0026] Description of reference numerals:

[0027] 101. Fixed housing; 102. Inner mold body; 103. Arc-surface stamping groove; 104. Push rod groove; 105. End fixing ring; 106. Stamping product; 201. Push rod; 202. Transmission connecting block; 203. Push rod adjustment groove; 204. Thread; 205. Nut. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0029] like Figure 1-5 As shown, the cold heading stamping die with high product yield provided by the embodiment of the utility model comprises a movable die and a static die, both ends of the movable die and the static die are provided with a stamping groove, and both the movable die and the static die are connected to the external cold heading stamping equipment by transmission; the cold heading stamping equipment provides a transmission force to bring the stamping grooves of the movable die and the static die closer to each other, so as to realize the effective stamping production of the stamping product 106; the stamping groove of the static die is a curved stamping groove 103, and the static die also includes a fixed shell 101, an inner die The inner mold body 102 and the end fixing ring 105 are interference fit with the fixed shell 101 from the inside of the fixed shell 101, and the end fixing ring 105 is fixed to the end of the fixed shell 101 by threaded connection. A push rod groove 104 parallel to the axis of the inner mold body 102 is opened inside the inner mold body 102, and the end of the push rod groove 104 is connected with the arc surface stamping groove 103. A push rod 201 is slidably installed inside the push rod groove 104;

[0030] For stamping products 106 with flat ends and end thickness less than 2 mm, after stamping is completed, the flat part will be firmly embedded in the arc-surface stamping groove 103 under the influence of metal deformation, and it is necessary to use the push rod 201 to push the stamping product 106 in the direction of the arc-surface stamping groove 103 to complete the blanking; while for stamping products 106 with an end thickness less than 2 mm, when a push rod 201 is used to push out the stamping product 106 at a single force point, the stamping product 106 will be subject to the friction force at the side wall of the arc-surface stamping groove 103, and there is a risk of deformation of the flat end of the stamping product 106, so that the stamping product 106 produced does not meet the good product standard and has a low good product rate;

[0031] By adopting the above scheme, multiple push rods 201 are used to jointly push the stamped product 106 out of the arc-surface stamping groove 103. There is no need to worry about the deformation of the flat end of the stamped product 106 due to the fast withdrawal speed and high friction during the withdrawal process. Metal parts with fragile structures can also be quickly withdrawn, with high production efficiency and high yield rate.

[0032] One push rod groove 104 coincides with the axis of the inner mold body 102; three push rod grooves 104 are distributed in a circular array with the axis of the inner mold body 102 as the axis;

[0033] By adopting the above technical solution, when the stamped product 106 is withdrawn, the center of the flat end of the stamped product 106 has a force point, which can further ensure that the force points of the stamped product 106 are evenly distributed when the stamped product 106 is withdrawn, which is beneficial to improving the withdrawal efficiency and the yield rate.

[0034] All push rods 201, at one end away from the arc surface stamping groove 103, pass through the same transmission connection block 202, and the transmission connection block 202 is connected to the push rod transmission mechanism of the external cold heading stamping equipment; the push rod 201 can slide in the direction close to or away from the arc surface stamping groove 103 in the through hole penetrated by the transmission connection block 202.

[0035] The through hole is a push rod adjustment groove 203, and the push rod 201 can move in the push rod adjustment groove 203 in the direction close to or away from the axis of the transmission connection block 202 to adjust the position of the transmission connection block 202, thereby adjusting the spacing between all push rods 201, and having strong adaptability to stamping products 106 of different sizes; when it is necessary to replace the production product, the inner mold body 102 in the static mold is replaced with an inner mold body 102 with a shape required for production in the arc surface stamping groove 103, and the spacing between the push rods 201 is adjusted to make the push force points of the stamping product 106 uneven;

[0036] The push rod 201 is fixed inside the push rod adjustment groove 203 by means of a fastening component.

[0037] The fastening components include threads 204 and nuts 205. The threads 204 are opened on the side wall of the push rod 201 near the transmission connection block 202, and nuts 205 connected to the threads 204 are respectively arranged on both sides of the transmission connection block 202; after the push rod 201 is adjusted to the required position, the nuts 205 on both sides of the transmission connection block 202 are screwed to make the two nuts 205 approach each other and close to the transmission connection block 202, and the static friction between the nuts 205 and the transmission connection block 202 is used to complete the fixing effect of the position of the push rod 201.

[0038] For the stamping product 106 with a curved stamping surface, different push rods 201 are adjusted to different positions along the axial direction of the inner mold body 102, so that all push rods 201 are close to one end of the curved stamping groove 103 and can be combined into a distribution shape corresponding to the curved surface of the curved stamping groove 103, thereby improving the adaptability of pushing and unloading uneven products.

[0039] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A cold heading stamping die with high product yield, comprising a movable die and a static die, both ends of the movable die and the static die are provided with stamping grooves, and both the movable die and the static die are connected to external cold heading stamping equipment by transmission; characterized in that: The stamping groove of the static mold is a curved surface stamping groove (103). The static mold also includes a fixed shell (101), an inner mold body (102), and an end fixed ring (105). The inner mold body (102) is interference-fitted with the fixed shell (101) from the inside of the fixed shell (101). The end fixed ring (105) is fixed to the end of the fixed shell (101) by threaded connection. A push rod groove (104) parallel to the axis of the inner mold body (102) is opened through the inside of the inner mold body (102). The end of the push rod groove (104) is connected to the curved surface stamping groove (103). A push rod (201) is slidably installed inside the push rod groove (104); more than three push rod grooves (104) are opened.

2. A cold heading stamping die with high product yield according to claim 1, characterized in that: The three or more push rod grooves (104) are distributed in a ring array with the axis of the inner mold body (102) as the axis.

3. A cold heading stamping die with high product yield according to claim 2, characterized in that: One push rod groove (104) coincides with the axis of the inner mold body (102); the remaining push rod grooves (104) are distributed in a plurality of annular arrays with the axis of the inner mold body (102) as the axis.

4. The cold heading stamping die with high product yield according to claim 1, characterized in that: All the push rods (201) are connected to one end away from the arc-surface stamping groove (103) and penetrate the same transmission connection block (202) to form a through hole. The transmission connection block (202) is connected to the push rod transmission mechanism of the external cold heading stamping equipment.

5. A cold heading stamping die with high product yield according to claim 4, characterized in that: The through hole is a push rod adjustment slot (203); The push rod (201) is fixed inside the push rod adjustment groove (203) by means of a fastening component.

6. A cold heading stamping die with high product yield according to claim 5, characterized in that: The fastening component comprises a thread (204) and a nut (205); a thread (204) is provided on the side wall of the push rod (201) near the transmission connection block (202); nuts (205) connected to the thread (204) are respectively provided on both sides of the transmission connection block (202).

Images