Cold heading die

Abstract

The utility model relates to the technical field of cold heading dies, in particular to a cold heading die which comprises a base, a reinforcing ring and an auxiliary assembly, the reinforcing ring is connected with the outer circumference of the base, a die core is arranged on the inner wall of the base, a material hole is formed in the surface of the die core, the material hole is communicated with the inner wall of the base, and the auxiliary assembly is arranged on the base. The auxiliary assembly is arranged on the inner wall of the base; the auxiliary assembly comprises a binding unit, the binding unit comprises a cover plate, a sliding groove is formed in the upper surface of the base, the cover plate is slidably connected with the inner wall of the sliding groove, a mounting groove is formed in the position, located on the inner wall of the sliding groove, of the base, the outer circumference of the mold core is connected with a U-shaped block, and the U-shaped block is connected with the inner wall of the mounting groove in an inserted mode. According to the utility model, the auxiliary assembly is arranged, so that the replacement efficiency of the mold core of the mold is improved, the problem of tedious disassembly and assembly processes during installation by virtue of threads is reduced, and the convenience of mold replacement operation is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cold heading dies, and particularly relates to a cold heading die. Background Art

[0002] A cold heading die is a key tool in the cold heading process. It forms parts by plastic deformation of metal materials at room temperature. It has the characteristics of high strength, high wear resistance, high precision and good toughness, and is usually composed of an upper die, a lower die, a die core and a die sleeve, etc. The die core determines the shape of the part, and the die sleeve plays a role in protection and support. It is widely used in industries such as automobiles, machinery, and electronics to produce standard parts and special-shaped parts such as bolts, nuts, and rivets. Its performance directly affects product quality and production efficiency. For example, the production of automotive engine bolts relies on high-quality cold heading dies to ensure quality and output.

[0003] The prior art such as the utility model with the publication number of CN220717678U discloses a cold heading die for a cold heading machine. This patent adopts a main die for stamping forming; a thread groove, which is opened in the upper end of the main die; a shaping die, which is installed in the thread groove by threading; a fixing component, which is installed on the left and right sides at the lower end of the main die, and the fixing component is used to improve the fastening effect when the main die is installed on the cold heading machine. When using the main die to stamp various parts in this utility model, by twisting the screw sleeve and the shaping die to remove, and then twisting another shaping die to install in the thread groove, and then twisting the screw sleeve to install on the main die to socket the shaping die inside, it is convenient to replace the stamping holes on the main die, so that the main die can stamp different parts. And the main die is inserted into the base welded on the cold heading machine through a convex block, solving the problem that the existing cold heading die of the cold heading machine is generally fixed on the cold heading machine for stamping use, but after the cold heading die is installed, the fixing part of the cold heading die shakes due to stamping, making the cold heading die unable to be used stably.

[0004] During the process of processing workpieces with the help of a cold heading die, there is a problem that in the existing cold heading die as described above, in order to replace the die core, the die core is installed in the die base by a threaded installation method so that the staff can replace the die core. Although the threaded installation can be used for replacement operations, in actual disassembly and assembly operations by threads, it often takes a lot of time and effort. Since the disassembly and assembly of the threads need to be manually rotated, the rotation speed of each circle depends on the operation of the staff, and it needs to be repeated many times to completely disassemble or install the die core, making the entire installation and disassembly process of the die core long and cumbersome. Summary of the Utility Model

[0005] The utility model aims to solve the shortcomings in the prior art that the threads need to be rotated manually when being disassembled and assembled, the rotation speed of each circle depends on the operation of the staff, and the core needs to be completely disassembled or installed repeatedly for many times, making the entire installation and disassembly process of the core lengthy and cumbersome, and a cold heading die is proposed.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a cold heading die, comprising a base, a reinforcement ring and an auxiliary component, wherein the reinforcement ring is connected to the outer circumference of the base, a mold core is arranged on the inner wall of the base, a material hole is opened on the surface of the mold core, the material hole is connected to the inner wall of the base, and the auxiliary component is arranged on the inner wall of the base;

[0007] The auxiliary component comprises a restraining unit, the restraining unit comprises a cover plate, the upper surface of the base is provided with a slide groove, the cover plate is slidably connected with the inner wall of the slide groove, the inner wall of the base located at the slide groove is provided with a mounting groove, the outer circumference of the mold core is connected with a U-shaped block, the U-shaped block is plugged with the inner wall of the mounting groove, the upper surface of the U-shaped block is connected with a guide sleeve, the upper surface of the U-shaped block is connected with a return spring, the return spring is located at the inner wall of the guide sleeve, the free end of the return spring is connected with a T-shaped bayonet pin, the T-shaped bayonet pin is slidably connected with the inner wall of the guide sleeve, the lower surface of the cover plate is provided with a slot, the T-shaped bayonet pin is plugged with the inner wall of the slot, and the upper surface of the cover plate is provided with an arc-shaped through hole;

[0008] The auxiliary component also includes a lifting unit, which includes a force-bearing plate. The inner wall of the base located in the installation groove is provided with a storage cavity. The force-bearing plate is connected to the inner wall of the storage cavity. The upper surface of the force-bearing plate is connected to a limiting sleeve. The inner wall of the limiting sleeve is slidably connected to a support column. The upper surface of the support column is connected to a connecting plate, which is in contact with the lower surface of the U-shaped block. The upper surface of the force-bearing plate is connected to a compression spring, which is connected to the lower surface of the connecting plate.

[0009] Preferably, the auxiliary component also includes a pressing unit, which includes a connecting frame, which is arranged on the upper surface of the mold core, and a push pin is connected to the lower surface of the connecting frame, and the push pin is slidably connected to the inner wall of the arc-shaped through hole, and the push pin abuts against the upper surface of the T-shaped pin. The push pin installed under the connecting frame can be inserted into the arc-shaped through hole and contact with the T-shaped pin, so that when the staff pushes the connecting frame, they can cooperate with the connecting frame to press the T-shaped pin downward.

[0010] Preferably, the upper surface of the cover plate is provided with anti-slip grooves. By providing the anti-slip grooves on the surface of the cover plate, the friction between the worker's fingers and the cover plate can be increased when the worker moves the cover plate, thereby improving the stability of the worker when operating the cover plate.

[0011] Preferably, the number of the U-shaped blocks is three. The three U-shaped blocks are arranged in a circumferential array with respect to the die core. The guiding sleeve is located on the inner wall of the mounting groove. The number of the guiding sleeves matches that of the U-shaped blocks. By means of the U-shaped blocks on the outer circumference of the mounting model, with the assistance of the mounting groove, the position of the die core can be preliminarily constrained, thus facilitating the subsequent installation operation.

[0012] Preferably, the inserted end of the T-shaped pin penetrates through the upper surface of the guiding sleeve. By means of the T-shaped pin installed in the guiding sleeve, with the assistance of the return spring, it can be stably inserted into the card slot, thereby restricting the position of the cover plate.

[0013] Preferably, the arc-shaped through hole communicates with the inner wall of the card slot. The card slot is circular. Through the arc-shaped through hole opened above the cover plate, it is available for the staff to place the push pin so that the staff can press the T-shaped pin through the push pin.

[0014] Preferably, the compression spring is sleeved on the surface of the limiting sleeve. By means of the compression spring installed below the connecting plate, when the connecting plate loses pressure, the connecting plate can be pushed to displace upward, thereby jacking up the U-shaped block upward.

[0015] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0016] In the present utility model, by arranging the auxiliary component, during processing, the workpiece is placed into the material hole, and then the stamping structure works to shape the workpiece in cooperation with the die core and the material hole. When the die core needs to be replaced, the connecting frame is taken, and the push pin is aligned with the upper part of the T-shaped pin and inserted into the arc-shaped through hole. The connecting frame is pushed downward. The connecting frame cooperates with the push pin to squeeze the T-shaped pin. The T-shaped pin is forced to squeeze the return spring, and the return spring is squeezed and deformed. At the same time, the T-shaped pin slides out of the card slot without the restraint of the return spring. The cover plate is toggled, and the cover plate displaces along the direction of the sliding groove. When the cover plate is blocked by the push pin, the connecting frame and the push pin are removed, and the cover plate is continuously toggled. When the cover plate moves to the maximum distance, the cover plate leaves above the mounting groove, and the mounting groove is completely opened. At the same time, the T-shaped pin, the guiding sleeve and the U-shaped block lose their restraint and the pressure exerted on the connecting plate. The connecting plate loses the pressure exerted on the compression spring, and the compression spring rebounds without pressure and pushes the connecting plate. The connecting plate is guided by the support column and the limiting sleeve to jack up the U-shaped block upward. The U-shaped block forces the die core to be ejected from the base, and then the die core can be taken off for replacement. By arranging the auxiliary component, the die core replacement efficiency of the die is improved, and then the problem of the long and cumbersome disassembly and assembly operation process during installation by means of threads is reduced, and the convenience of the die replacement operation is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of a cold heading die proposed by the present utility model;

[0018] Figure 2 The present utility model provides a schematic structural view of the pressing state of a cold heading die;

[0019] Figure 3 The present utility model provides a schematic sectional view of the structure of a cold heading die;

[0020] Figure 4 The present utility model provides a schematic view of a partial structure of a cold heading die;

[0021] Figure 5 The present utility model provides a schematic view of the structure of an auxiliary component of a cold heading die;

[0022] Figure 6 The present utility model provides a schematic view of the structure of a pressing unit of a cold heading die.

[0023] Legend:

[0024] 1. Base; 2. Reinforcing ring; 3. Die core; 4. Material hole; 5. Auxiliary component; 51. Restraining unit; 511. Chute; 512. Cover plate; 513. Installation groove; 514. U-shaped block; 515. Guide sleeve; 516. Return spring; 517. T-shaped pin; 518. Card slot; 519. Arc-shaped through hole; 52. Lifting unit; 521. Storage cavity; 522. Load-bearing plate; 523. Limiting sleeve; 524. Support column; 525. Connecting plate; 526. Compression spring; 53. Pressing unit; 531. Connecting frame; 532. Push pin. Detailed implementation mode

[0025] Please refer to Figures 1-6 , the present utility model provides a technical solution: a cold heading die, including a base 1, a reinforcing ring 2 and an auxiliary component 5. The reinforcing ring 2 is connected to the outer circumference of the base 1. A die core 3 is provided on the inner wall of the base 1. A material hole 4 is opened on the surface of the die core 3, and the material hole 4 communicates with the inner wall of the base 1. The auxiliary component 5 is provided on the inner wall of the base 1.

[0026] In this implementation: The auxiliary component 5 includes a binding unit 51. The binding unit 51 includes a cover plate 512. A chute 511 is formed on the upper surface of the base 1. The cover plate 512 is slidably connected to the inner wall of the chute 511. An installation groove 513 is formed in the inner wall of the base 1 at the chute 511. A U-shaped block 514 is connected to the outer circumference of the die core 3. The U-shaped block 514 is inserted into the inner wall of the installation groove 513. A guiding sleeve 515 is connected to the upper surface of the U-shaped block 514. A return spring 516 is connected to the upper surface of the U-shaped block 514. The return spring 516 is located inside the guiding sleeve 515. The free end of the return spring 516 is connected to a T-shaped locking pin 517. The T-shaped locking pin 517 is slidably connected to the inner wall of the guiding sleeve 515. A card slot 518 is formed on the lower surface of the cover plate 512. The T-shaped locking pin 517 is inserted into the inner wall of the card slot 518. An arc-shaped through hole 519 is formed on the upper surface of the cover plate 512;

[0027] The auxiliary component 5 further includes a jacking unit 52. The jacking unit 52 includes a load-bearing plate 522. A storage cavity 521 is formed in the inner wall of the base 1 at the installation groove 513. The load-bearing plate 522 is connected to the inner wall of the storage cavity 521. A limiting sleeve 523 is connected to the upper surface of the load-bearing plate 522. A support column 524 is slidably connected to the inner wall of the limiting sleeve 523. An adapter plate 525 is connected to the upper surface of the support column 524. The adapter plate 525 abuts against the lower surface of the U-shaped block 514. A compression spring 526 is connected to the upper surface of the load-bearing plate 522. The compression spring 526 is connected to the lower surface of the adapter plate 525.

[0028] Specifically, the auxiliary component 5 further includes a pressing unit 53. The pressing unit 53 includes a connecting frame 531. The connecting frame 531 is arranged on the upper surface of the die core 3. A push pin 532 is connected to the lower surface of the connecting frame 531. The push pin 532 is slidably connected to the inner wall of the arc-shaped through hole 519. The push pin 532 abuts against the upper surface of the T-shaped locking pin 517. By means of the push pin 532 installed below the connecting frame 531, it can be inserted into the arc-shaped through hole 519 and contact the T-shaped locking pin 517, so that when the staff pushes the connecting frame 531, it can cooperate with the connecting frame 531 to press the T-shaped locking pin 517 downward.

[0029] Specifically, anti-slip patterns are provided on the upper surface of the cover plate 512.

[0030] In this embodiment: By providing anti-slip patterns on the surface of the cover plate 512, the friction between the staff's fingers and the cover plate 512 can be increased when the staff toggles the cover plate 512, so as to improve the stability of the staff when operating the cover plate 512.

[0031] Specifically, the number of U-shaped blocks 514 is three. The three U-shaped blocks 514 are arranged in a circumferential array with respect to the mold core 3. The guiding sleeve 515 is located on the inner wall of the mounting groove 513. The number of guiding sleeves 515 matches that of the U-shaped blocks 514. By means of the U-shaped blocks 514 on the outer circumference of the mounting mold, with the assistance of the mounting groove 513, the position of the mold core 3 can be preliminarily constrained, thus facilitating the subsequent installation operation.

[0032] In this embodiment: The inserted end of the T-shaped pin 517 penetrates the upper surface of the guiding sleeve 515.

[0033] In this embodiment: By means of the T-shaped pin 517 installed in the guiding sleeve 515, with the assistance of the return spring 516, it can be stably inserted into the clamping groove 518, thereby restricting the position of the cover plate 512.

[0034] Specifically, the arc-shaped through hole 519 is connected to the inner wall of the clamping groove 518. The clamping groove 518 is circular. Through the arc-shaped through hole 519 opened above the cover plate 512, it is available for the staff to place the push pin 532, so that the staff can press the T-shaped pin 517 through the push pin 532.

[0035] Specifically, the compression spring 526 is sleeved on the surface of the limiting sleeve 523.

[0036] In this embodiment: By means of the compression spring 526 installed below the connecting plate 525, when the connecting plate 525 loses pressure, it can push the connecting plate 525 to displace upward, thereby jacking up the U-shaped block 514 upward.

[0037] Working principle: when processing, put the workpiece into the material hole 4, and then the stamping structure works to shape the workpiece in cooperation with the mold core 3 and the material hole 4; when the mold core 3 needs to be replaced, take the connecting frame 531, and align the push pin 532 with the upper side of the T-shaped bayonet 517 and insert it into the arc-shaped through hole 519, push the connecting frame 531 downward, and the connecting frame 531 cooperates with the push pin 532 to squeeze the T-shaped bayonet 517, and the T-shaped bayonet 517 is forced to squeeze the reset spring 516, and the reset spring 516 is squeezed and deformed, and at the same time, the T-shaped bayonet 517 loses the constraint of the reset spring 516 and slides out of the slot 518, and the cover plate 512 is moved, and the cover plate 512 moves along the direction of the slide slot 511, and the cover plate 512 is blocked by the push pin 532. When the cover plate 512 is moved to the maximum spacing, the cover plate 512 leaves the top of the mounting groove 513, and the mounting groove 513 is fully opened. At the same time, the T-shaped latch 517, the guide sleeve 515 and the U-shaped block 514 lose their constraints and lose the pressure applied to the connecting plate 525. The connecting plate 525 loses the pressure applied to the compression spring 526. The compression spring 526 loses the pressure and rebounds and pushes the connecting plate 525. Under the guidance of the support column 524 and the limiting sleeve 523, the connecting plate 525 lifts the U-shaped block 514 upward. The U-shaped block 514 is forced to push the core 3 out of the base 1, and the core 3 can be removed for replacement.

Claims

1. A cold heading die, comprising a base (1), a reinforcing ring (2) and an auxiliary component (5), characterized in that: The reinforcing ring (2) is connected to the outer circumference of the base (1). A mold core (3) is provided on the inner wall of the base (1). A material hole (4) is formed on the surface of the mold core (3), and the material hole (4) communicates with the inner wall of the base (1). The auxiliary component (5) is provided on the inner wall of the base (1). The auxiliary component (5) includes a restraint unit (51). The restraint unit (51) includes a cover plate (512). A chute (511) is formed on the upper surface of the base (1). The cover plate (512) is slidably connected to the inner wall of the chute (511). An installation groove (513) is formed on the inner wall of the base (1) at the chute (511). A U-shaped block (514) is connected to the outer circumference of the mold core (3). The U-shaped block (514) is inserted into the inner wall of the installation groove (513). A guiding sleeve (515) is connected to the upper surface of the U-shaped block (514). A return spring (516) is connected to the upper surface of the U-shaped block (514). The return spring (516) is located inside the guiding sleeve (515). The free end of the return spring (516) is connected to a T-shaped pin (517). The T-shaped pin (517) is slidably connected to the inner wall of the guiding sleeve (515). A clamping groove (518) is formed on the lower surface of the cover plate (512). The T-shaped pin (517) is inserted into the inner wall of the clamping groove (518). An arc-shaped through hole (519) is formed on the upper surface of the cover plate (512). The auxiliary component (5) further includes a jacking unit (52). The jacking unit (52) includes a load-bearing plate (522). A storage cavity (521) is formed on the inner wall of the base (1) at the installation groove (513). The load-bearing plate (522) is connected to the inner wall of the storage cavity (521). A limiting sleeve (523) is connected to the upper surface of the load-bearing plate (522). A support column (524) is slidably connected to the inner wall of the limiting sleeve (523). An adapter plate (525) is connected to the upper surface of the support column (524). The adapter plate (525) abuts against the lower surface of the U-shaped block (514). A compression spring (526) is connected to the upper surface of the load-bearing plate (522). The compression spring (526) is connected to the lower surface of the adapter plate (525).

2. A cold heading die according to claim 1, characterized in that: The auxiliary component (5) further includes a pressing unit (53). The pressing unit (53) includes a connecting frame (531). The connecting frame (531) is provided on the upper surface of the mold core (3). A push pin (532) is connected to the lower surface of the connecting frame (531). The push pin (532) is slidably connected to the inner wall of the arc-shaped through hole (519). The push pin (532) abuts against the upper surface of the T-shaped pin (517).

3. A cold heading die according to claim 1, characterized in that: The upper surface of the cover plate (512) is provided with anti-slip lines.

4. A cold heading die according to claim 1, wherein: The number of the U-shaped blocks (514) is three. The three U-shaped blocks (514) are arranged in a circular array with respect to the mold core (3). The guiding sleeve (515) is located inside the installation groove (513). The number of the guiding sleeves (515) matches that of the U-shaped blocks (514).

5. A cold heading die according to claim 1, characterized in that: The insertion end of the T-shaped pin (517) penetrates through the upper surface of the guiding sleeve (515).

6. A cold heading die according to claim 1, characterized in that: The arc-shaped through hole (519) communicates with the inner wall of the clamping groove (518), and the clamping groove (518) is circular.

7. A cold heading die according to claim 1, characterized in that: The compression spring (526) is sleeved on the surface of the limiting sleeve (523).

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