A partial shape forging die

Abstract

The utility model provides a kind of local forming forging die, comprising: lower die and upper die, the end face of upper die towards lower die is provided with forming groove, and forming surface and guide surface are sequentially arranged in forming groove along the direction from top to bottom;The end of upper die away from lower die is provided with stripping hole, stripping hole is provided with stripping assembly, and the output part of stripping assembly reciprocates in stripping position and hidden position, when the output part of stripping assembly is located in stripping position, the output part of stripping assembly is inserted into forming groove, when the output part of stripping assembly is located in hidden position, the output part of stripping assembly is located outside forming groove, the beneficial effects brought by the technical scheme in the utility model at least include: upper die is provided with guide surface and forming surface, can right the blank, play the role of stable positioning, realize stable deformation in forming blank process, and stripping hole and stripping assembly are further provided in upper die, stripping assembly can discharge forming piece from forming groove, and stripping is facilitated.

Description

Technical Field

[0001] This application relates to the field of forging die technology, specifically to a partial forming forging die. Background Technology

[0002] Forging refers to the process of shaping raw metal bars into specific shapes using a forming die, based on the plastic deformation characteristics of metal under external force, before die forging production. This process can be categorized into various methods such as extrusion, drawing, and roll forming. In subsequent forging, this shaped part can be directly forged to achieve the final forging shape.

[0003] If the blank is made so that a part of it remains unchanged or slightly deformed, while the rest of the blank is plastically deformed, it is called partial forming. Because the upper part of the blank goes deep into the upper cavity during partial forming and the upper cavity has a small slope, it is difficult to demold. If it cannot be demolded in time, the blank will be carried to a high place and fall with the movement of the upper mold, which can easily cause accidents such as being hit, burned, or deformed and damaged blank. Utility Model Content

[0004] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a partial forming forging die to solve the problem that in the prior art, the upper part of the billet extends into the upper cavity and the upper cavity has a small slope, which leads to poor demolding. If demolding cannot be completed in time, the billet will be carried to a high place and fall with the movement of the upper die, which can easily cause accidents such as being hit, burned, or deformed and damaged billet.

[0005] To achieve the above and other related objectives, this utility model provides a partial forming forging die, comprising:

[0006] Lower mold;

[0007] An upper mold is located above the lower mold. The end face of the upper mold facing the lower mold is provided with a forming groove for local forming. A forming surface and a guide surface are arranged sequentially in the forming groove from top to bottom.

[0008] The upper mold has a demolding hole at the end away from the lower mold. A demolding component is provided in the demolding hole. The output part of the demolding component reciprocates between the demolding position and the hidden position. When the output part of the demolding component is in the demolding position, the output part of the demolding component extends into the forming groove. When the output part of the demolding component is in the hidden position, the output part of the demolding component is outside the forming groove.

[0009] Optionally, the demolding assembly includes a demolding member and a demolding spring. When the demolding assembly is in the hidden position, both the demolding member and the demolding spring are located inside the demolding hole. The demolding member includes a spring guide, a flange, and the output part. One end of the demolding spring is sleeved on the spring guide and abuts against the flange, and the other end of the demolding spring abuts against the inner wall of the demolding hole.

[0010] A first limiting step is formed between the output section and the flange.

[0011] Optionally, a guide hole is further provided between the demolding hole and the molding groove, the demolding hole and the molding groove are connected through the guide hole, the diameter of the guide hole is smaller than the diameter of the demolding hole, and the output part is movably disposed in the guide hole;

[0012] A second limiting step is formed between the guide hole and the demolding hole.

[0013] Optionally, the forming surface and the guide surface are smoothly connected by a transition surface.

[0014] Optionally, the forming surface is inclined at 3 to 5 degrees away from the center of the forming groove from top to bottom;

[0015] The guide surface is inclined at 20 to 30 degrees away from the center of the forming groove from top to bottom.

[0016] Optionally, the lower mold has an arc-shaped concave surface on its end face facing the upper mold.

[0017] Optionally, the lower mold has an installation groove that extends through the upper and lower ends of the lower mold. A shaping component is detachably installed in the installation groove. The top of the shaping component is flush with the arc-shaped concave surface; or the top of the shaping component extends beyond the arc-shaped concave surface, or the top of the shaping component is lower than the arc-shaped concave surface.

[0018] Optionally, the bottom of the lower mold is further provided with an adjustment groove, and a buffer recovery element is provided in the adjustment groove.

[0019] Optionally, a third limiting step is provided in the mounting groove, and a fourth limiting step is provided on the shaping component, with the third limiting step and the fourth limiting step cooperating with each other.

[0020] Optionally, the end face of the upper mold facing the lower mold is provided with a first demolding surface, the first demolding surface is smoothly connected to the guide surface, the first demolding surface is an arc surface, and the first demolding surface is gradually inclined outward along the direction from top to bottom;

[0021] The lower mold has a second demolding surface on its end face facing the upper mold. The second demolding surface is smoothly connected to the arc-shaped concave surface. The second demolding surface is an arc surface, and the two demolding surfaces are gradually inclined outward from bottom to top.

[0022] As described above, the beneficial effects of the technical solution in this utility model include at least the following: the upper mold is provided with a guide surface and a forming surface, which can straighten the blank and play a role in stable positioning, so as to achieve stable deformation during the forming process; the upper mold is also provided with a demolding hole and a demolding component, which can discharge the molded part from the forming groove, making demolding easier and avoiding unsuccessful demolding. Attached Figure Description

[0023] Figure 1 The diagram shown is a first structural schematic diagram of an exemplary embodiment of the present invention.

[0024] Figure 2 The diagram shown is a second structural schematic of an exemplary embodiment of the present invention.

[0025] Part Number Explanation

[0026] 1. Lower mold; 101. Arc-shaped concave surface; 102. Mounting groove; 103. Shaping component; 104. Adjustment groove; 105. Buffer recovery component; 106. Second demolding surface; 2. Upper mold; 201. Demolding hole; 202. Guide hole; 3. First assembly seat; 4. Second assembly seat; 5. Forming groove; 501. Forming surface; 502. Guide surface; 503. Transition surface; 504. First demolding surface; 6. Demolding assembly; 601. Demolding component; 602. Demolding spring. Detailed Implementation

[0027] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0028] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the illustrations only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0029] Numerous details are explored in the following description to provide a more thorough explanation of embodiments of the present disclosure. However, it will be apparent to those skilled in the art that embodiments of the present disclosure may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the present disclosure.

[0030] Please see Figure 1 This utility model provides a partial forming forging die, including: a lower die 1 and an upper die 2. The upper die 2 is located above the lower die 1. The top of the upper die 2 is fixedly connected to a first mounting base 3, and the bottom of the lower die 1 is fixedly connected to a second mounting base 4. The end face of the upper die 2 facing the lower die 1 is provided with a forming groove 5 for blank forming. The opening of the forming groove 5 faces downward. The width of the vertical cross-section of the forming groove 5 gradually increases from top to bottom. The width of the forming groove 5 from top to bottom increases. A forming surface 501 and a guide surface 502 are sequentially arranged. In this embodiment, both the forming surface 501 and the guide surface 502 are closed annular surfaces. Both the forming surface 501 and the guide surface 502 serve to forge and shape the blank. During partial forming and blanking, the blank is corrected and positioned by the guide surface 502. A demolding hole 201 is provided at the end of the upper mold 2 away from the lower mold 1. The upper part of the demolding hole 201 abuts against the first mounting base 3. A demolding assembly 6 is provided inside the demolding hole 201. The top of part 6 is pressed and limited by the first mounting seat 3. The output part of the demolding component 6 reciprocates between the demolding position and the hidden position. When the output part of the demolding component 6 is in the demolding position, the output part of the demolding component 6 extends into the forming groove 5. When the output part of the demolding component 6 is in the hidden position, the output part of the demolding component 6 is outside the forming groove 5. When the blank is placed into the forming groove 5 for partial forming, the demolding component 6 is subjected to the pressure of the upper mold 2 and the lower mold 1. The pressure of material deformation causes the output part of the demolding component 6 to retract into the hidden position. After the blank is formed, the upper mold 2 and the lower mold 1 separate. The demolding component 6 applies a downward force to the blank, causing the blank to leave the forming groove 5. The output end of the demolding component 6 extends into the top of the forming groove 5, providing output force for the blank to be demolded, making it easier for the blank to be demolded and avoiding the situation where the blank gets stuck in the forming groove 5. This achieves stable deformation during the blank forming process, so that the length-to-diameter ratio (length L / diameter D) of the blank can reach 4 during local forming.

[0031] Specifically, in one embodiment of this application, the top of the molding groove 5 is provided with a rounded corner, and the rounded corner is smoothly connected to the molding surface 501.

[0032] Specifically, in one embodiment of this application, the demolding assembly 6 includes a demolding member 601 and a demolding spring 602. When the demolding assembly 6 is located in the hidden position, both the demolding member 601 and the demolding spring 602 are located within the demolding hole 201. The demolding member 601 includes a spring guide, a flange, and an output portion. The spring guide, flange, and output portion are arranged sequentially from top to bottom and are integrally formed. The diameter of the flange is larger than the diameter of the spring guide and the output portion, which allows for demolding... The mold spring 602 serves as a limit, and the flange also prevents the demolding component 601 from sliding from the demolding hole 201 into the molding groove 5. One end of the demolding spring 602 is sleeved on the spring guide and abuts against the flange, and the other end of the demolding spring 602 abuts against the first mounting base 3. A first limiting step is formed between the output part and the flange for limiting. When the output part of the demolding component 6 is in the hidden position, the demolding spring 602 is in the compressed state, and when the output part of the demolding component 6 is in the demolding position, the demolding spring 602 is in the unfolded state.

[0033] Specifically, in one embodiment of this application, a guide hole 202 is further provided between the demolding hole 201 and the molding groove 5. The demolding hole 201 and the molding groove 5 are connected through the guide hole 202. The upper end of the guide hole 202 is connected to the demolding hole 201, and the lower end of the guide hole 202 is connected to the molding groove 5. The diameter of the guide hole 202 is smaller than the diameter of the demolding hole 201. The output part is movably disposed in the guide hole 202. A second limiting step is formed between the demolding hole 201 and the guide hole 202. The first limiting step and the second limiting step cooperate to limit the demolding component 6 and prevent the demolding component 6 from sliding out of the demolding hole 201.

[0034] Specifically, in one embodiment of this application, the molding surface 501 and the guide surface 502 are smoothly connected by a transition surface 503. The molding surface 501 is set at an inclination of 3 to 5 degrees away from the center of the molding groove 5 from top to bottom. The guide surface 502 is set at an inclination of 20 to 30 degrees away from the center of the molding groove 5 from top to bottom. The transition surface 503 is an arc surface facing away from the molding groove 5.

[0035] Specifically, in one embodiment of this application, the lower mold 1 is provided with an arc-shaped concave surface 101 on its end face facing the upper mold 2. The arc-shaped concave surface 101 can make the bottom of the blank smooth during forming, solving the problem of dead corners with steps after the bottom of the blank is formed. Furthermore, since the lower mold 1 has an arc-shaped concave surface 101, when the guide surface 502 guides and corrects the blank, the bottom of the blank slides over the smooth arc surface of the arc-shaped concave surface 101, and the resistance is small. Moreover, the middle part of the arc-shaped concave surface 101 is the lowest point, and the blank is subjected to gravity. The arc-shaped concave surface 101 can also play a guiding role for the blank.

[0036] Please see Figure 2 Specifically, in one embodiment of this application, the lower mold 1 is provided with an installation groove 102, which is a circular or rectangular groove. The installation groove 102 extends through the upper and lower ends of the lower mold 1. A shaping component 103 is detachably installed in the installation groove 102. The shaping component 103 has a movable section, which has the same structure as the installation groove 102. The movable section is slidably installed in the installation groove 102. The top of the shaping component 103 is flush with the arc-shaped concave surface 101; or the top of the shaping component 103 extends beyond the arc-shaped concave surface 101, or the top of the shaping component 103 is lower than the arc-shaped concave surface 101. Based on the needs of forging, the shaping component 103 can be replaced to adapt to the partial forming of various shaped products.

[0037] Specifically, in one embodiment of this application, the bottom of the lower mold 1 is further provided with an adjustment groove 104, and a buffer recovery element 105 is provided in the adjustment groove 104. In this embodiment, the buffer recovery element 105 is a return spring, and the adjustment groove 104 is an annular groove located on the outer ring of the mounting groove 102. Multiple buffer recovery elements 105 are provided, and the multiple buffer recovery elements 105 are evenly arranged in the adjustment groove 104; or multiple adjustment grooves 104 are provided, and the multiple adjustment grooves 104 are evenly distributed around the outer ring of the mounting groove 102, and the buffer recovery elements 105 and the adjustment groove 104 are evenly distributed. The number of buffer restoration components 105 is consistent, and each buffer restoration component 105 is set in the corresponding adjustment groove 104. The upper end of the buffer restoration component 105 abuts against the top of the adjustment groove 104, and the lower end of the buffer restoration component 105 abuts against the second assembly seat 4. When the upper mold 2 is pressed down, the lower mold 1 moves down with the upper mold 2, and the buffer restoration component 105 can play a buffering role. The buffer restoration component 105 is in a compressed state. When the upper mold 2 moves upward, the buffer restoration component 105 recovers under the action of elastic force, and the lower mold 1 moves upward under the action of the buffer restoration component 105, so that the blank is automatically demolded.

[0038] Specifically, in one embodiment of this application, a third limiting step is provided in the mounting groove 102, and a fourth limiting step is provided on the shaping component 103. The third limiting step and the fourth limiting step cooperate with each other to prevent the lower mold 1 from moving upward under the elastic force of the buffer recovery component 105, which would cause the lower mold 1 to detach.

[0039] Specifically, in one embodiment of this application, the upper mold 2 is provided with a first demolding surface 504 on its end face facing the lower mold 1. The first demolding surface 504 is smoothly connected to the guide surface 502. The first demolding surface 504 is an arc surface and is gradually inclined outward from top to bottom. The lower mold 1 is provided with a second demolding surface 106 on its end face facing the upper mold 2. The second demolding surface 106 is smoothly connected to the arc-shaped concave surface 101. The second demolding surface 106 is an arc surface and is gradually inclined outward from bottom to top. The upper mold 2 and the lower mold 1 are respectively provided with a first demolding surface 504 and a second demolding surface 106 with large rounded corners, making demolding faster and more convenient.

[0040] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A partial forming forging die, characterized in that, include: Lower mold; An upper mold is located above the lower mold. The end face of the upper mold facing the lower mold is provided with a forming groove for local forming. A forming surface and a guide surface are arranged sequentially in the forming groove from top to bottom. The upper mold has a demolding hole at the end away from the lower mold. A demolding component is provided in the demolding hole. The output part of the demolding component reciprocates between the demolding position and the hidden position. When the output part of the demolding component is in the demolding position, the output part of the demolding component extends into the forming groove. When the output part of the demolding component is in the hidden position, the output part of the demolding component is outside the forming groove.

2. The partial forming forging die according to claim 1, characterized in that: The demolding assembly includes a demolding component and a demolding spring. When the demolding assembly is in the hidden position, both the demolding component and the demolding spring are located inside the demolding hole. The demolding component includes a spring guide, a flange, and the output part. One end of the demolding spring is sleeved on the spring guide and abuts against the flange, while the other end of the demolding spring abuts against the inner wall of the demolding hole. A first limiting step is formed between the output section and the flange.

3. The partial forming forging die according to claim 2, characterized in that: A guide hole is also provided between the demolding hole and the forming groove. The demolding hole and the forming groove are connected through the guide hole. The diameter of the guide hole is smaller than the diameter of the demolding hole. The output part is movably disposed in the guide hole. A second limiting step is formed between the guide hole and the demolding hole.

4. The partial forming forging die according to claim 1, characterized in that: The forming surface and the guiding surface are smoothly connected by a transition surface.

5. The partial forming forging die according to claim 1, characterized in that: The forming surface is inclined at 3 to 5 degrees away from the center of the forming groove from top to bottom. The guide surface is inclined at 20 to 30 degrees away from the center of the forming groove from top to bottom.

6. The partial forming forging die according to claim 1, characterized in that: The lower mold has an arc-shaped concave surface on its end face facing the upper mold.

7. A partial forming forging die according to claim 6, characterized in that: The lower mold has an installation groove that extends through the upper and lower ends of the lower mold. A shaping component is detachably installed in the installation groove. The top of the shaping component is flush with the arc-shaped concave surface; or the top of the shaping component extends beyond the arc-shaped concave surface; or the top of the shaping component is lower than the arc-shaped concave surface.

8. A partial forming forging die according to claim 1, characterized in that: The bottom of the lower mold is also provided with an adjustment groove, and a buffer recovery component is provided in the adjustment groove.

9. A partial forming forging die according to claim 7, characterized in that: A third limiting step is provided in the mounting groove, and a fourth limiting step is provided on the shaping component. The third limiting step and the fourth limiting step cooperate with each other.

10. A partial forming forging die according to claim 6, characterized in that: The upper mold has a first demolding surface on its end face facing the lower mold. The first demolding surface is smoothly connected to the guide surface. The first demolding surface is an arc surface and is gradually inclined outward from top to bottom. The lower mold has a second demolding surface on its end face facing the upper mold. The second demolding surface is smoothly connected to the arc-shaped concave surface. The second demolding surface is an arc surface, and the two demolding surfaces are gradually inclined outward from bottom to top.

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