Cold heading stamping die with replaceable stamping die cavity

Abstract

The utility model relates to the technical field of cold heading stamping dies, and discloses a stamping die cavity replaceable type cold heading stamping die which comprises a connecting ring used for connecting and fixedly connecting a rear die body and a front die body, a push rod cavity is formed in the axis of the rear die body in a penetrating mode, and a stamping cavity is formed in the axis of the front die body in a penetrating mode. According to the cold heading stamping die with the replaceable stamping die cavity, the stamping cavity and the push rod cavity are separated in an assembling mode, the static die is installed on stamping equipment, when the production requirement is changed, only the front die body needs to be replaced, the efficiency of replacing the front die body is high, and the influence on continuous production is small; and the mode of replacing the front mold body is used for replacing the mode of independently producing a corresponding integral mold for each product, so that the cost of the mold is saved. And the integral stability of the mold is guaranteed in a hinging manner without adding an external structure.

Description

Technical Field

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

[0002] The cold heading stamping die has two parts, a moving die and a static die. The die cavities of the moving die and the static die are used to stamp out the metal parts such as nails and bolts to be produced. The forming process of metal parts often includes multiple stamping processes, and the production is completed in a gradual deformation manner. If the cold heading stamping die is installed on a cold heading stamping device that does not have multiple die sets for simultaneous stamping, after completing a stamping process, the die of the next process needs to be replaced to continue stamping. Replacing the die is time-consuming and laborious, and each die needs to have a sufficient size to withstand the stamping stress and have a sufficient size to effectively complete the installation connection with the equipment, resulting in a large demand for raw materials and high costs when producing the die; or when producing different products, different dies still need to be used, and there is also a problem of large demand for raw materials and high costs when producing the die;

[0003] The utility model patent with publication number CN201231299Y: A cold heading roller stamping die, discloses a cold heading stamping die with the advantage of being compact, but cannot solve the problem of large raw material demand and high cost when producing the die. Therefore, technical personnel in this field are in urgent need of a stamping die cavity replaceable cold heading stamping die to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a cold heading stamping die with a replaceable stamping die cavity, so as to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a stamping die cavity replaceable cold heading stamping die, comprising a movable die and a static die, the movable die and the static die are respectively connected to the cold heading stamping equipment by transmission, the static die comprises a rear die body and a front die body, and also comprises a connecting ring for connecting and fixing the rear die body and the front die body, a push rod cavity is opened through the axis of the rear die body, a stamping cavity is opened through the axis of the front die body, and the push rod cavity is connected to the stamping cavity;

[0006] The connecting ring includes a first connecting half ring and a second connecting half ring, the first connecting half ring and the second connecting half ring are combined to form a connecting ring, one end of the first connecting half ring is hinged to the end of the second connecting half ring, and the free end of the first connecting half ring is connected to the free end of the second connecting half ring in a detachable manner.

[0007] A first push rod is slidably installed inside the push rod cavity, and a second push rod is slidably installed inside the stamping cavity near one end of the push rod cavity. The end of the first push rod is connected to the end of the second push rod. The length of the second push rod is smaller than the length of the stamping cavity, so that there is enough space inside the stamping cavity as a stamping groove for component processing.

[0008] A first arc surface ring groove is fixed on the inner wall of the connecting ring, and a first arc surface ring groove corresponding to the shape of the first arc surface convex ring is opened on the outer wall of the front mold body. A second arc surface convex ring is fixed on the inner wall of the connecting ring, and a second arc surface ring groove corresponding to the shape of the second arc surface convex ring is opened on the outer wall of the rear mold body. The first arc surface convex ring and the second arc surface convex ring are respectively embedded in the first arc surface ring groove and the second arc surface ring groove to achieve the connection and fixation between the rear mold body and the front mold body. When there are different product production needs, it is only necessary to open the connecting ring, replace the front mold body corresponding to the product stamping shape, and install the connecting ring again, so that the static mold can be put into production. When replacing the front mold body, there is no need to disassemble the entire static mold from the cold heading stamping equipment, and the mold changing efficiency is high.

[0009] The spacing between the first arc surface convex ring and the second arc surface convex ring is smaller than the spacing between the first arc surface ring groove and the second arc surface ring groove; so that the arc surface of the first arc surface convex ring close to the second arc surface convex ring can be tightly attached to the arc surface of the first arc surface ring groove close to one end of the second arc surface ring groove, and similarly, the arc surface of the second arc surface convex ring close to the first arc surface convex ring can be tightly attached to the arc surface of the second arc surface ring groove close to one end of the first arc surface ring groove, and the greater the locking force of the connecting ring in the axial direction, the greater the lateral extrusion force on the first arc surface ring groove and the second arc surface ring groove, and the more stable the fit between the front mold body and the rear mold body.

[0010] The free end of the first connecting half ring and the free end of the second connecting half ring are connected in a detachable manner by using a fastening assembly.

[0011] The fastening assembly includes a first mounting plate fixedly mounted on the free end of the first connecting half ring, and a second mounting plate fixedly mounted on the free end of the second connecting half ring; the first mounting plate is provided with a first smooth slot, the second mounting plate is provided with a second threaded slot, the first mounting plate and the second mounting plate are parallel to each other, a bolt is installed through the inside of the first smooth slot, and the screw rod of the bolt is threadedly matched with the second threaded slot;

[0012] By adopting the above technical solution, by turning the bolt, the clamping and loosening effects of the first connecting half ring and the second connecting half ring can be achieved, thereby achieving the fixing and adjusting effect between the rear mold body and the front mold body.

[0013] One end of the first connecting half ring and the end of the second connecting half ring are hingedly connected to each other via a hinge groove and a hinge rod; the hinge groove is provided at the end of the second connecting half ring, and the hinge rod and the first connecting half ring are integrally formed, thereby avoiding the addition of a complex hinge structure and affecting the overall impact resistance of the static mold, thereby ensuring a long service life of the static mold.

[0014] The first push rod end is threadedly connected to the second push rod end.

[0015] Beneficial effect: In the above technical scheme, the utility model provides a stamping die cavity replaceable cold heading stamping die, which separates the stamping cavity and the push rod cavity in an assembled manner. The static die is installed on the stamping equipment. When the production demand changes, only the front die body needs to be replaced. The replacement of the front die body is efficient and has little impact on continuous production. Moreover, the method of replacing the front die body replaces the method of producing the corresponding integral die for each product separately, which saves the cost of the die.

[0016] The utility model ensures the stability of the entire mold by a hinged manner without adding an external structure, and enables a stable fit between the front mold body and the rear mold body by a fixed manner of arc surface extrusion fit. Although the static mold as a whole is easy to disassemble, it has high stability and does not affect the production accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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.

[0018] Figure 1 It is a left side oblique view of the overall structure of the embodiment of the utility model;

[0019] Figure 2 It is a right side oblique view of the overall structure of the embodiment of the utility model;

[0020] Figure 3 This is a disassembled diagram of the overall structure of the embodiment of the utility model;

[0021] Figure 4 This is a front cross-sectional view of the first arc surface annular groove area of ​​the embodiment of the utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the embodiment of the utility model when the connecting ring is in a fastened state;

[0023] Figure 6 This is a schematic diagram of the structure of the embodiment of the utility model when the connecting ring is opened;

[0024] Figure 7 For the utility model embodiment Figure 6 A magnified image of area A.

[0025] Description of reference numerals:

[0026] 101, rear mold body; 102, front mold body; 103, connecting ring; 104, push rod cavity; 105, stamping cavity; 201, first push rod; 202, second push rod; 301, first arc surface convex ring; 302, first arc surface annular groove; 303, second arc surface convex ring; 304, second arc surface annular groove; 401, first connecting half ring; 402, second connecting half ring; 403, first mounting plate; 404, first smooth slot hole; 405, second mounting plate; 406, second threaded slot hole; 407, bolt; 501, hinge slot; 502, hinge rod. DETAILED DESCRIPTION

[0027] 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.

[0028] like Figure 1-7 As shown, the stamping die cavity replacement type cold heading stamping die provided by the embodiment of the utility model includes a movable die and a static die, the movable die and the static die are respectively connected to the cold heading stamping equipment by transmission, the static die includes a rear die body 101 and a front die body 102, and also includes a connecting ring 103 for connecting and fixing the rear die body 101 and the front die body 102, a push rod cavity 104 is opened through the axis of the rear die body 101, and a stamping cavity 105 is opened through the axis of the front die body 102, and the push rod cavity 104 and the stamping cavity 105 are connected to each other;

[0029] The connecting ring 103 includes a first connecting half ring 401 and a second connecting half ring 402. The first connecting half ring 401 and the second connecting half ring 402 are combined to form the connecting ring 103. One end of the first connecting half ring 401 is hinged to the end of the second connecting half ring 402. The free end of the first connecting half ring 401 and the free end of the second connecting half ring 402 are connected in a detachable manner using a fastening assembly.

[0030] A first push rod 201 is slidably installed inside the push rod cavity 104, and a second push rod 202 is slidably installed inside the stamping cavity 105 near one end of the push rod cavity 104. The end of the first push rod 201 is connected to the end of the second push rod 202. The length of the second push rod 202 is smaller than the length of the stamping cavity 105, so that there is enough space inside the stamping cavity 105 as a stamping groove for component processing.

[0031] A first arc surface ring groove 302 is fixed on the inner wall of the connecting ring 103, and a first arc surface ring groove 302 corresponding to the shape of the first arc surface convex ring 301 is opened on the outer wall of the front mold body 102, and a second arc surface convex ring 303 is fixed on the inner wall of the connecting ring 103, and a second arc surface convex ring 304 corresponding to the shape of the second arc surface convex ring 303 is opened on the outer wall of the rear mold body 101. The first arc surface convex ring 301 and the second arc surface convex ring 303 are respectively embedded in the first arc surface ring groove 302 and the second arc surface ring groove 304 to achieve the connection and fixation between the rear mold body 101 and the front mold body 102. When there are different product production needs, it is only necessary to open the connecting ring 103, replace the front mold body 102 corresponding to the product stamping shape, and then install the connecting ring 103 again, so that the static mold can be put into production. When replacing the front mold body 102, there is no need to disassemble the entire static mold from the cold heading stamping equipment, and the mold changing efficiency is high.

[0032] The distance between the first arc surface convex ring 301 and the second arc surface convex ring 303 is smaller than the distance between the first arc surface annular groove 302 and the second arc surface annular groove 304; so that the arc surface of the first arc surface convex ring 301 close to the second arc surface convex ring 303 can be tightly attached to the arc surface of the first arc surface annular groove 302 close to one end of the second arc surface annular groove 304, and similarly, the arc surface of the second arc surface convex ring 303 close to the first arc surface convex ring 301 can be tightly attached to the arc surface of the second arc surface annular groove 304 close to one end of the first arc surface annular groove 302, and the greater the locking force of the connecting ring 103 in the axial direction, the greater the lateral extrusion force on the first arc surface annular groove 302 and the second arc surface annular groove 304, and the more stable the fit between the front mold body 102 and the rear mold body 101.

[0033] The fastening assembly includes a first mounting piece 403 fixedly mounted on the free end of the first connecting half ring 401, and a second mounting piece 405 fixedly mounted on the free end of the second connecting half ring 402; the first mounting piece 403 is provided with a first smooth slot hole 404, the second mounting piece 405 is provided with a second threaded slot hole 406, the first mounting piece 403 and the second mounting piece 405 are parallel to each other, a bolt 407 is installed through the inside of the first smooth slot hole 404, and the screw rod of the bolt 407 is threadedly matched with the second threaded slot hole 406;

[0034] By adopting the above technical solution, by tightening the bolt 407 , the clamping and loosening effects of the first connecting half ring 401 and the second connecting half ring 402 can be achieved, thereby achieving the fixing and adjusting effect between the rear mold body 101 and the front mold body 102 .

[0035] One end of the first connecting half ring 401 and the end of the second connecting half ring 402 are hingedly connected by a hinge groove 501 and a hinge rod 502; the hinge groove 501 is opened at the end of the second connecting half ring 402, and the hinge rod 502 and the first connecting half ring 401 are integrally formed, avoiding the addition of a complex hinge structure, which affects the overall impact resistance of the static mold and ensures a long service life of the static mold.

[0036] The end of the first push rod 201 is threadedly connected to the end of the second push rod 202 .

[0037] 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 stamping die cavity replaceable cold heading stamping die, comprising a movable die and a static die, wherein the movable die and the static die are respectively connected to a cold heading stamping device by transmission, and characterized in that: The static mold comprises a rear mold body (101), a front mold body (102), and a connecting ring (103) for connecting and fixing the rear mold body (101) and the front mold body (102); a push rod cavity (104) is provided through the axis of the rear mold body (101); a stamping cavity (105) is provided through the axis of the front mold body (102); the push rod cavity (104) and the stamping cavity (105) are connected to each other; The connecting ring (103) comprises a first connecting half ring (401) and a second connecting half ring (402), wherein the first connecting half ring (401) and the second connecting half ring (402) are combined to form the connecting ring (103), one end of the first connecting half ring (401) is hinged to the end of the second connecting half ring (402), and the free end of the first connecting half ring (401) and the free end of the second connecting half ring (402) are connected in a detachable manner.

2. The cold heading stamping die with replaceable stamping die cavity according to claim 1, characterized in that: A first push rod (201) is slidably installed inside the push rod cavity (104), and a second push rod (202) is slidably installed inside the stamping cavity (105) near one end of the push rod cavity (104). The end of the first push rod (201) is connected to the end of the second push rod (202), and the length of the second push rod (202) is less than the length of the stamping cavity (105).

3. The cold heading stamping die with replaceable stamping die cavity according to claim 1, characterized in that: A first arc surface annular groove (302) is fixed on the inner wall of the connecting ring (103), a first arc surface annular groove (302) corresponding to the shape of the first arc surface convex ring (301) is opened on the outer wall of the front mold body (102), a second arc surface convex ring (303) is fixed on the inner wall of the connecting ring (103), a second arc surface convex ring (304) corresponding to the shape of the second arc surface convex ring (303) is opened on the outer wall of the rear mold body (101), and the first arc surface convex ring (301) and the second arc surface convex ring (303) are respectively embedded in the first arc surface annular groove (302) and the second arc surface annular groove (304).

4. The cold heading stamping die with replaceable stamping die cavity according to claim 3, characterized in that: The distance between the first arc surface convex ring (301) and the second arc surface convex ring (303) is smaller than the distance between the first arc surface annular groove (302) and the second arc surface annular groove (304).

5. The cold heading stamping die with replaceable stamping die cavity according to claim 1, characterized in that: The free end of the first connecting half ring (401) and the free end of the second connecting half ring (402) are connected in a detachable manner by means of a fastening assembly.

6. The cold heading stamping die with replaceable stamping die cavity according to claim 5, characterized in that: The fastening assembly comprises a first mounting plate (403) fixedly mounted on the free end of the first connecting half ring (401), and a second mounting plate (405) fixedly mounted on the free end of the second connecting half ring (402); the first mounting plate (403) is provided with a first smooth slot hole (404), the second mounting plate (405) is provided with a second threaded slot hole (406), the first mounting plate (403) and the second mounting plate (405) are parallel to each other, a bolt (407) is installed through the inside of the first smooth slot hole (404), and the screw rod of the bolt (407) is threadedly matched with the second threaded slot hole (406).

7. The cold heading stamping die with replaceable stamping die cavity according to claim 1, characterized in that: One end of the first connecting half ring (401) and the end of the second connecting half ring (402) are hingedly connected to the hinge rod (502) by means of a hinge groove (501); the hinge groove (501) is provided at the end of the second connecting half ring (402), and the hinge rod (502) and the first connecting half ring (401) are integrally formed.

8. The cold heading stamping die with replaceable stamping die cavity according to claim 2, characterized in that: The end of the first push rod (201) is threadedly connected to the end of the second push rod (202).

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