End socket forge piece forming device and demolding method

Abstract

The invention discloses an end socket forge piece forming device and a demolding method, belongs to the technical field of end socket manufacturing, and solves the problem that an existing end socket forge piece is difficult to demold. The end socket forge piece forming device comprises a punch, a punch connecting frame and a transition connecting plate. The punch comprises a punch connecting part and a punch punching part fixedly arranged on the lower surface of the punch connecting part; the punch connecting frame is connected with the press movable cross beam, the upper end of the transition connecting plate is connected with the punch connecting frame, and the lower end of the transition connecting plate is connected with the punch connecting part; a second vertical pin hole is formed in the punch connecting part and located above the end socket forge piece. During punching, the movable cross beam of the press drives the punch connecting frame and further drives the punch to press down; and after punching is finished, the transition connecting plate is detached, the position of the second vertical pin moves downwards, the second vertical pin makes contact with the two ends of the end socket forge piece, pressure acts on the end socket forge piece, and demolding of the end socket forge piece and the punch is achieved. When the device is used for demolding, the demolding efficiency is high, and the demolding effect is good.

Description

Technical Field

[0001] The invention relates to the technical field of end cap manufacturing, and in particular to an end cap forging forming device and a demoulding method. Background Art

[0002] At present, large nuclear capacitor head forgings are mostly formed by blank punching. However, due to the cold shrinkage of the forging and the increased friction resistance of the contact surface after plastic deformation, it is often difficult for the forging to be separated from the punch. In actual production, the formed billet and the punch need to be left to stand until the temperature difference is small, waiting for the billet to be automatically demolded by gravity or demolded by means of collision. This not only seriously delays the production cycle, but also has an adverse effect on the quality of the product forgings due to the failure to dissipate heat in time in the long-term static process. Especially for ball heads or heads with straight sections, the contact area with the punch is larger, and the die holding is more serious. The formed forgings and punches need to be returned to the furnace for heating together to utilize the difference in thermal expansion coefficients between the forgings and the punches for demolding. This not only increases production costs, but also gradually reduces the accuracy of the punches. Summary of the invention

[0003] In view of the above situation, the present invention aims to provide a head forging forming device and a demolding method, which are used to solve the following technical problems: the existing head forgings are difficult to demold.

[0004] The purpose of the present invention is mainly achieved through the following technical solutions:

[0005] A head forging forming device, the head forging forming device comprises a punch, a punch connecting frame and a transition connecting plate; the punch comprises a punch connecting part and a punch stamping part fixedly arranged on the lower surface of the punch connecting part; the punch connecting frame is connected to the movable crossbeam of the press, the transition connecting plate and the punch connecting frame are connected by a first vertical pin, a first horizontal pin and a second horizontal pin, and the transition connecting plate and the punch connecting part are connected by a second vertical pin, a third horizontal pin and a fourth horizontal pin; a second vertical pin hole is provided on the punch connecting part, and the second vertical pin hole is located above the two ends of the head forging; when punching, the movable crossbeam of the press drives the punch connecting frame, the punch connecting frame drives the transition connecting plate, and the transition connecting plate drives the punch to be pressed down; after the punching is completed, the transition connecting plate is removed, so that the positions of the punch connecting frame and the second vertical pin are moved downward as a whole, the punch connecting frame is directly in contact with the punch connecting part, the second vertical pin is in contact with the upper end of the head forging, and pressure is applied to the head forging to realize the demoulding of the head forging and the punch.

[0006] Furthermore, the punch connection part is plate-shaped, and the side length of the punch connection part is greater than the outer diameter of the head forging.

[0007] Furthermore, the shape of the punching portion of the punch matches the shape of the inner cavity of the head forging.

[0008] Furthermore, a second through hole is provided on the transition connecting plate, and a second vertical pin hole is provided on the punch connecting portion.

[0009] Furthermore, the second vertical pin hole is in a "T" shape, the aperture d2 of the upper portion of the second vertical pin hole is the same as the aperture d1 of the second through hole, and the aperture d3 of the lower portion of the second vertical pin hole is smaller than d2.

[0010] Furthermore, the second vertical pin includes a second vertical pin cap and a second vertical pin body, and the diameter d4 of the second vertical pin cap and the diameter d5 of the second vertical pin body meet the following relationship: d3<d4<d1, d5<d3.

[0011] Furthermore, the length of the second vertical pin body is greater than the thickness of the punch connecting portion.

[0012] Furthermore, the second vertical pin is provided with a third transverse pin hole and a fourth transverse pin hole.

[0013] Furthermore, the head forging forming device also includes a lower die, a bracket and a support block.

[0014] The present invention also provides a method for demolding a head forging, which uses the above-mentioned head forging forming device. The method for demolding a head forging includes: after the punching is completed, the transition connecting plate is removed, the position of the second vertical pin is moved downward, the second vertical pin contacts the two ends of the head forging, and pressure is applied to the head forging to achieve demolding of the head forging and the punch.

[0015] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0016] The head forging forming device of the present invention is provided with a transition connecting plate and a second vertical pin. After the punching is completed, the transition connecting plate is removed, the position of the second vertical pin is moved downward, and the second vertical pin contacts the two ends of the head forging, and the pressure is applied to the head forging to realize the demoulding of the head forging and the punch. The demoulding device is used for demoulding, and the demoulding efficiency is high and the demoulding effect is good, and the performance of the head forging will not be adversely affected.

[0017] In the demoulding method for head forgings of the present invention, the demoulding process is simple, and the operation is fast and efficient. By adopting the demoulding method of mechanical pressure, not only the traditional demoulding method that only relies on the thermal expansion coefficient is abandoned, the success rate is high, and the demoulding efficiency is significantly improved. Not only the production cycle is greatly shortened, but also energy saving is achieved. In addition, the forging can be cooled quickly after demoulding, and there is no need to demould by secondary heating, which ensures the quality of the product.

[0018] Other features and advantages of the present invention will be described in the following description, and part of them will become obvious from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the contents particularly pointed out in the written description and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings are only for the purpose of illustrating particular embodiments and are not to be considered limiting of the present invention. Like reference symbols denote like components throughout the drawings.

[0020] Figure 1 It is a cross-sectional view of the head forging forming device of the present invention;

[0021] Figure 2 A partial cross-sectional view of a punch connection portion of the present invention;

[0022] Figure 3 is a schematic diagram of the distribution of the second through holes of the present invention;

[0023] Figure 4 It is one of the process diagrams of the demoulding method of the present invention;

[0024] Figure 5 This is the second process diagram of the demoulding method of the present invention;

[0025] Figure 6 It is the third process diagram of the demoulding method of the present invention.

[0026] Reference numerals

[0027] 101-punch connecting part, 102-punch stamping part, 2-punch connecting frame, 3-transition connecting plate, 4-first vertical pin, 5-first transverse pin, 6-second transverse pin, 7-second vertical pin, 8-third transverse pin, 9-fourth transverse pin, 10-lower die, 11-bracket, 12-head forging, 13-second through hole, 14-second vertical pin hole, 15-support block. DETAILED DESCRIPTION

[0028] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used to explain the principles of the present invention together with the embodiments of the present invention.

[0029] It should be noted that, in the present invention, the descriptions indicating the orientation or position relationship, such as "upper, lower, left, right, front, rear, inside, outside, vertical, perpendicular, horizontal, top, bottom, middle, etc., are only used to facilitate the description and understanding of the present invention, and do not indicate or imply that the device or element must have a specific orientation, be constructed or operate in a specific orientation. In particular, when describing that a certain component or device is "fixed to" or "connected to" another device or element, the device or element may be directly fixed or connected to another element, or may be indirectly fixed or connected to another element. Therefore, it cannot be understood as a limitation of the present invention. Similarly, the terms "first, second" and the like are only used to distinguish similar elements with the same configuration and function, and cannot be understood as indicating or implying relative importance.

[0030] The present invention provides a head forging forming device, such as Figure 1 As shown, the head forging forming device includes a punch, a punch connecting frame 2 and a transition connecting plate 3; the punch includes a punch connecting portion 101 and a punch stamping portion 102 fixedly arranged on the lower surface of the punch connecting portion 101; wherein the punch connecting frame 2 is connected to the movable crossbeam of the press, the transition connecting plate 3 is connected to the punch connecting frame 2 through a first vertical pin 4, a first transverse pin 5, and a second transverse pin 6, and the transition connecting plate 3 is connected to the punch connecting portion 101 through a second vertical pin 7, a third transverse pin 8, and a fourth transverse pin 9; the punch connecting portion 101 is provided with a second vertical pin hole 14 During punching, the second vertical pin hole 14 is located above the two ends of the head forging 12; during punching, the movable crossbeam of the press drives the punch connecting frame 2, the punch connecting frame 2 drives the transition connecting plate 3, and the transition connecting plate 3 drives the punch to be pressed down; after the punching is completed, the transition connecting plate 3 is removed, so that the position of the punch connecting frame 2 and the second vertical pin 7 moves downward as a whole, the punch connecting frame 2 directly contacts the punch connecting part 101, and the lower end of the second vertical pin 7 contacts the upper end of the head forging 12, so that pressure is applied to the head forging 12 to realize the demoulding of the head forging 12 and the punch.

[0031] Specifically, the punch connecting portion 101 may be plate-shaped, and the side length of the punch connecting portion 101 is greater than the outer diameter of the head forging 12 .

[0032] Specifically, the shape of the punch stamping portion 102 matches the inner shape of the head forging 12 .

[0033] Specifically, the transition connecting plate 3 is provided with a second through hole 13 , the punch connecting portion 101 is provided with a second vertical pin hole 14 , and the second vertical pin 7 connects the transition connecting plate 3 with the punch through the second through hole 13 and the second vertical pin hole 14 .

[0034] Specifically, Figure 2 The figure shows a partial cross-sectional view of the punch connection portion. The second vertical pin hole 14 is in a "T" shape. The aperture d2 of the upper portion of the second vertical pin hole 14 is the same as the aperture d1 of the second through hole 13, and the aperture d3 of the lower portion of the second vertical pin hole 14 is smaller than d2.

[0035] Specifically, the second vertical pin 7 includes a second vertical pin cap and a second vertical pin body, and the diameter d4 of the second vertical pin cap and the diameter d5 of the second vertical pin body meet the following relationship:

[0036] d3<d4<d1, d5<d3.

[0037] Specifically, the length of the second vertical pin body is greater than the thickness of the punch connecting portion 101 to ensure that the second vertical pin 7 can contact the head forging 12 and apply pressure to the head forging 12 to achieve demoulding of the head forging 12 and the punch.

[0038] Specifically, in order to ensure that the second vertical pins 7 exert pressure evenly on the head forging 12, the number of the second vertical pins 7 is plural, and preferably, the number of the second vertical pins 7 is 4. Correspondingly, the number of the second vertical pin holes 14 is also plural.

[0039] Specifically, the distance between the two second vertical pin holes 14 on the same cutting plane of the punch connection part 101 (calculated according to the inner wall) is greater than the maximum outer diameter of the punch stamping part 102. In particular, the distance between the two second vertical pin holes 14 on the same cutting plane is adapted to the shape of the head forging 12 after punching. For the head forging with a larger flared edge after punching, the distance between the two second vertical pin holes 14 on the same cutting plane should be appropriately increased to ensure that the second vertical pin 7 can act on the head forging.

[0040] Specifically, the second vertical pin 7 is provided with a third transverse pin hole and a fourth transverse pin hole, and the third transverse pin 8 and the fourth transverse pin 9 are connected to the second vertical pin 7 through the third transverse pin hole and the fourth transverse pin hole, respectively.

[0041] Specifically, the vertical positions of the third transverse pin hole and the fourth transverse pin hole determine the axial position of the second vertical pin 7. The second vertical pin 7 should be prevented from being subjected to force during the punching process. The forming force generated by the press during the punching process should act on the transition connecting plate 3 and be transmitted to the punch. Therefore, after the third transverse pin 8 and the fourth transverse pin 9 are inserted into the transverse pin holes of the second vertical pin 7, it is ensured that the upper end surface of the second vertical pin 7 will not exceed the upper end surface of the transition connecting plate 3.

[0042] Specifically, the transition connecting plate 3, the punch connecting frame 2 and the punch connecting part 101 are all provided with a first through hole, and the first vertical pin 4 connects the transition connecting plate 3 and the punch connecting frame 2 through the first through hole. After the punching is completed, the transition connecting plate 3 is removed, so that the positions of the punch connecting frame 2 and the second vertical pin 7 are moved downward as a whole, the punch connecting frame 2 directly contacts the punch connecting part 101, the second vertical pin 7 passes through the second vertical pin hole 14, the lower end of the second vertical pin 7 contacts the two ends of the head forging 12, and the first vertical pin 4 is inserted into the first through hole on the punch connecting part 101.

[0043] Specifically, the length of the portion of the first vertical pin 4 inserted into the first through hole on the punch connecting portion 101 is not greater than the thickness of the punch connecting portion 101 .

[0044] Specifically, the first vertical pin 4 is provided with a first transverse pin hole and a second transverse pin hole, and the first transverse pin 5 and the second transverse pin 6 are connected to the first vertical pin 4 through the first transverse pin hole and the second transverse pin hole respectively.

[0045] Specifically, the punch connecting portion 101 is also provided with a first through hole.

[0046] Specifically, the number of the first vertical pins 4, the first transverse pins 5, and the second transverse pins 6 is plural. Preferably, the number of the first vertical pins 4, the first transverse pins 5, and the second transverse pins 6 is 4.

[0047] Specifically, as above Figure 3 The diagram shows the distribution of the second through holes. The circumferential distribution of the first through holes and the second through holes 13 on the transition connecting plate 3 is different. The number of the second through holes 13 can be 4, and the positions of the second through holes 13 are evenly distributed on the circumference, with an interval of 90°, and the four second through holes 13 are at the same distance from the side of the transition connecting plate 3.

[0048] There are multiple first through holes, and the first through holes and the second through holes 13 do not interfere with each other.

[0049] Specifically, the punch connecting frame 2 is connected to the movable crossbeam of the press by bolts.

[0050] Specifically, the head forging forming device further comprises a lower die 10, a bracket 11 and a support block 15, and the lower die 10 is placed on the platform through the bracket 11. The lower die 10 is used to form the head forging 12.

[0051] The present invention also provides a method for demolding a head forging, which uses the above-mentioned head forging forming device. The method for demolding a head forging includes: after the punching is completed, the transition connecting plate 3 is removed, the position of the second vertical pin 7 is moved downward, and the second vertical pin 7 contacts the two ends of the head forging 12, and pressure is applied to the head forging 12 to realize the demolding of the head forging 12 and the punch.

[0052] Specifically, the above-mentioned head forging demoulding method comprises the following steps:

[0053] Step 1: After the punching is completed, lift the movable crossbeam of the press, move the platform, lift the lower die 10, and place the support block 15 on the bracket 11. Figure 4 As shown in a) and b);

[0054] Step 2: The movable crossbeam of the press moves downward, and the punch connection portion 101 contacts the support block 15. Figure 4 As shown in c);

[0055] Step 3, remove the first transverse pin 5, the second transverse pin 6, the third transverse pin 8 and the fourth transverse pin 9; separate the transition connecting plate 3, the punch connecting frame 2 and the punch, lift the transition connecting plate 3, and expose the second vertical pin 7 on the upper end surface of the punch connecting portion 101; Figure 5 As shown;

[0056] Step 4: The movable crossbeam of the press is pressed down, and the force acts on the second vertical pin 7 through the punch connecting frame 2 and is transmitted to the head forging 12. The head forging 12 is subjected to a force perpendicular to the ground, so that the head forging 12 is separated from the punch; Figure 6shown.

[0057] Specifically, in the above step 1, when the movable crossbeam of the press is lifted, the punch connecting frame 2, the transition connecting plate 3, the punch and the head forging 12 are lifted together.

[0058] Specifically, in the above step 1, because the inner diameter of the lower die is relatively small, it is not conducive to the subsequent demolding operation. Therefore, replacing it with a support block can increase the gap between the inner wall of the support block and the head forging, which is conducive to the demolding of the head forging.

[0059] Specifically, in the above step 1, the number of the support blocks 15 is 2, and the distance between the two support blocks 15 is greater than the maximum outer diameter of the head forging.

[0060] Specifically, in the above step 2, the center of the punch is aligned with the center of the movable crossbeam of the press to facilitate uniform application of pressure.

[0061] Specifically, the movable distance H1 of the second vertical pin 7 in the second through hole 13 and the second vertical pin hole 14 is greater than the distance H2 between the lower end surface of the second vertical pin 7 and the upper edge of the head forging during punching.

[0062] Compared with the prior art, the head forging forming device of the present invention is provided with a transition connecting plate and a second vertical pin. After the punching is completed, the transition connecting plate is removed, the position of the second vertical pin is moved down, and the second vertical pin contacts the two ends of the head forging, and the pressure is applied to the head forging to realize the demoulding of the head forging and the punch. The demoulding effect is high and good when the device is used for demoulding, and the performance of the head forging will not be adversely affected.

[0063] The demoulding method for head forgings of the present invention has a simple demoulding process and is quick and efficient to operate. By adopting mechanical pressure to demould, not only the traditional demoulding method that only relies on the thermal expansion coefficient is abandoned, the success rate is high, and the demoulding efficiency is significantly improved. Not only the production cycle is greatly shortened, but also energy saving is achieved. In addition, the forging can be quickly cooled after demoulding, and demoulding by secondary heating is not necessary, which ensures the quality of the product.

[0064] Example 1

[0065] This embodiment provides a head forging forming device, such as Figure 1As shown, the head forging forming device includes a punch, a punch connecting frame 2 and a transition connecting plate 3; the punch includes a punch connecting part 101 and a punch stamping part 102 fixed to the lower surface of the punch connecting part 101; wherein, the punch connecting frame 2 is connected to the movable crossbeam of the press by bolts, the transition connecting plate 3 is connected to the punch connecting frame 2 by a first vertical pin 4, a first transverse pin 5, and a second transverse pin 6, and the transition connecting plate 3 is connected to the punch connecting part 101 by a second vertical pin 7, a third transverse pin 8, and a fourth transverse pin 9; a second vertical pin hole 14 is provided on the punch connecting part 101, and when punching, the second vertical pin hole 14 is located above the two ends of the head forging 12. During punching, the movable crossbeam of the press drives the punch connecting frame 2, the punch connecting frame 2 drives the transition connecting plate 3, and the transition connecting plate 3 drives the punch to be pressed down; after the punching is completed, the transition connecting plate 3 is removed, so that the position of the punch connecting frame 2 and the second vertical pin 7 moves downward as a whole, the punch connecting frame 2 directly contacts the punch connecting part 101, and the lower end of the second vertical pin 7 contacts the upper end of the head forging 12, so that pressure is applied to the head forging 12 to realize the demolding of the head forging 12 and the punch.

[0066] Specifically, the punch connecting portion 101 is plate-shaped, and the side length of the punch connecting portion 101 is greater than the outer diameter of the head forging 12 .

[0067] Specifically, the shape of the punch stamping portion 102 matches the inner shape of the head forging 12 .

[0068] Specifically, the transition connecting plate 3 is provided with a second through hole 13 , the punch connecting portion 101 is provided with a second vertical pin hole 14 , and the second vertical pin 7 connects the transition connecting plate 3 with the punch through the second through hole 13 and the second vertical pin hole 14 .

[0069] Specifically, the second vertical pin hole 14 is in a T-shape, the diameter d2 of the upper portion of the second vertical pin hole 14 is the same as the diameter d1 of the second through hole 13 , and the diameter d3 of the lower portion of the second vertical pin hole 14 is smaller than d2 .

[0070] Specifically, the second vertical pin 7 includes a second vertical pin cap and a second vertical pin body, and the diameter d4 of the second vertical pin cap and the diameter d5 of the second vertical pin body meet the following relationship:

[0071] d3<d4<d1, d5<d3.

[0072] Specifically, the length of the second vertical pin body is greater than the thickness of the punch connecting portion 101 .

[0073] Specifically, the number of the second vertical pins 7 is 4. The number of the second vertical pin holes 14 is also 4.

[0074] Specifically, the distance between the two second vertical pin holes 14 on the same cut surface of the punch connecting portion 101 (calculated based on the inner wall) is greater than the maximum outer diameter of the punch stamping portion 102 .

[0075] Specifically, the second vertical pin 7 is provided with a third transverse pin hole and a fourth transverse pin hole, and the third transverse pin 8 and the fourth transverse pin 9 are respectively connected to the second vertical pin 7 through the third transverse pin hole and the fourth transverse pin hole. After the third transverse pin 8 and the fourth transverse pin 9 are inserted into the transverse pin holes of the second vertical pin 7, it is ensured that the upper end surface of the second vertical pin 7 does not exceed the upper end surface of the transition connecting plate 3.

[0076] Specifically, the transition connecting plate 3, the punch connecting frame 2 and the punch connecting part 101 are all provided with a first through hole, and the first vertical pin 4 connects the transition connecting plate 3 and the punch connecting frame 2 through the first through hole. After the punching is completed, the transition connecting plate 3 is removed, so that the positions of the punch connecting frame 2 and the second vertical pin 7 are moved downward as a whole, the punch connecting frame 2 directly contacts the punch connecting part 101, the second vertical pin 7 passes through the second vertical pin hole 14, the lower end of the second vertical pin 7 contacts the two ends of the head forging 12, and the first vertical pin 4 is inserted into the first through hole on the punch connecting part 101.

[0077] Specifically, the first vertical pin 4 is provided with a first transverse pin hole and a second transverse pin hole, and the first transverse pin 5 and the second transverse pin 6 are connected to the first vertical pin 4 through the first transverse pin hole and the second transverse pin hole respectively.

[0078] Specifically, the circumferential distribution of the first through holes and the second through holes 13 on the transition connecting plate 3 is different. The number of the second through holes 13 can be 4, and the positions of the second through holes 13 are evenly distributed on the circumference, with an interval of 90°, and the four second through holes 13 are at the same distance from the side of the transition connecting plate 3.

[0079] There are multiple first through holes, and the first through holes and the second through holes 13 do not interfere with each other.

[0080] Specifically, the number of the first vertical pins 4 , the first transverse pins 5 , and the second transverse pins 6 are all four.

[0081] Specifically, the head forging forming device further includes a lower die 10 , a bracket 11 and a support block 15 , and the lower die 10 is placed on the walkway through the bracket 11 .

[0082] Example 2

[0083] This embodiment provides a method for demoulding a head forging, using the above-mentioned head forging forming device, and the method for demoulding a head forging includes the following steps:

[0084] Step 1: After punching is completed, lift the movable crossbeam of the press, move the platform, lift the lower die 10, and place the support block 15 on the bracket 11;

[0085] Step 2: The movable crossbeam of the press moves downward, and the punch contacts the support block 15;

[0086] Step 3, remove the first transverse pin 5, the second transverse pin 6, the third transverse pin 8 and the fourth transverse pin 9; separate the transition connecting plate 3, the punch connecting frame 2 and the punch, lift the transition connecting plate 3, and expose the second vertical pin 7 on the upper end surface of the punch connecting portion 101; Figure 4 As shown;

[0087] Step 4: The movable crossbeam of the press is pressed down, and the force acts on the second vertical pin 7 through the punch connecting frame 2 and is transmitted to the head forging 12. The head forging 12 is subjected to a force perpendicular to the ground, so that the head forging 12 is separated from the punch; Figure 5 shown.

[0088] Specifically, in the above step 1, when the movable crossbeam of the press is lifted, the punch connecting frame 2, the transition connecting plate 3, the punch and the head forging 12 are lifted together.

[0089] Specifically, in the above step 1, the number of the support blocks 15 is 2, and the distance between the two support blocks 15 is greater than the maximum outer diameter of the head forging.

[0090] Specifically, in the above step 2, the center of the punch is aligned with the center of the movable crossbeam of the press to facilitate uniform application of pressure.

[0091] Specifically, the movable distance H1 of the second vertical pin 7 in the second through hole 13 and the second vertical pin hole 14 is greater than the distance H2 between the lower end surface of the second vertical pin 7 and the upper edge of the head forging during punching.

[0092] The demoulding method for head forgings described in this embodiment is simple in demoulding process and quick and efficient in operation. By adopting mechanical pressure to demould, not only the traditional demoulding method that only relies on the thermal expansion coefficient is abandoned, the success rate is high, and the demoulding efficiency is significantly improved. Not only the production cycle is greatly shortened, but also energy saving is achieved. In addition, the forging can be cooled quickly after demoulding, and there is no need to demould by secondary heating, which ensures the quality of the product.

[0093] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A head forging forming device, characterized in that: The head forging forming device comprises a punch, a punch connecting frame (2) and a transition connecting plate (3); the punch comprises a punch connecting portion (101) and a punch stamping portion (102) fixedly arranged on the lower surface of the punch connecting portion (101); the punch connecting frame (2) is connected to a movable crossbeam of a press machine, the transition connecting plate (3) is connected to the punch connecting frame (2) via a first vertical pin (4), a first cross pin (5) and a second cross pin (6), and the transition connecting plate (3) is connected to the punch connecting portion (101) via a second vertical pin (7), a third cross pin (8) and a fourth cross pin (9); a punch connecting portion (101) is provided with a A second vertical pin hole (14) is provided, and the second vertical pin hole (14) is located above the two ends of the head forging (12); during punching, the movable crossbeam of the press drives the punch connecting frame (2), the punch connecting frame (2) drives the transition connecting plate (3), and the transition connecting plate (3) drives the punch to press down; after the punching is completed, the transition connecting plate (3) is removed, so that the positions of the punch connecting frame (2) and the second vertical pin (7) are moved downward as a whole, the punch connecting frame (7) directly contacts the punch connecting part (101), and the second vertical pin (7) contacts the upper end of the head forging (12), so that pressure is applied to the head forging (12), thereby realizing demoulding of the head forging (12) and the punch.

2. The head forging forming device according to claim 1, characterized in that: The punch connecting portion (101) is plate-shaped, and the side length of the punch connecting portion (101) is greater than the outer diameter of the head forging (12).

3. The head forging forming device according to claim 1, characterized in that: The shape of the punch stamping portion (102) matches the shape of the inner cavity of the head forging (12).

4. The head forging forming device according to claim 1, characterized in that: The transition connecting plate (3) is provided with a second through hole (13), and the punch connecting portion (101) is provided with a second vertical pin hole (14).

5. The head forging forming device according to claim 4, characterized in that: The second vertical pin hole (14) is in a T-shape, the aperture d2 of the upper portion of the second vertical pin hole (14) is the same as the aperture d1 of the second through hole (13), and the aperture d3 of the lower portion of the second vertical pin hole (14) is smaller than d2.

6. The head forging forming device according to claim 5, characterized in that: The second vertical pin (7) comprises a second vertical pin cap and a second vertical pin body, and the diameter d4 of the second vertical pin cap and the diameter d5 of the second vertical pin body meet the following relationship: d3<d4<d1, d5<d3.

7. The head forging forming device according to claim 6, characterized in that: The length of the second vertical pin body is greater than the thickness of the punch connecting portion (101).

8. The head forging forming device according to claim 6, characterized in that: The second vertical pin (7) is provided with a third transverse pin hole and a fourth transverse pin hole.

9. The head forging forming device according to any one of claims 1 to 8, characterized in that: The head forging forming device also includes a lower die (10), a bracket (11) and a support block (15).

10. A method for demoulding a head forging, characterized in that: The head forging forming device according to any one of claims 1 to 9 is used, and the head forging demolding method includes: after the punching is completed, the transition connecting plate (3) is removed, the position of the second vertical pin (7) is moved downward, and the second vertical pin (7) contacts the two ends of the head forging (12), and pressure is applied to the head forging (12) to realize the demolding of the head forging (12) and the punch.

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