Special-shaped convex hull forming mechanism for stamping part

Abstract

The utility model provides a stamping part special-shaped convex hull forming mechanism which comprises a lower die base, an upper die base, a lower die plate fixed to the upper surface of the lower die base, a concave die base installed in the lower die plate, an upper die frame installed on the lower surface of the upper die base and a hydraulic rod installed on the upper die frame. The stamping part special-shaped convex hull forming mechanism comprises an upper die frame, a female die base arranged on the upper die frame, a hydraulic rod arranged on the female die base, a punching part arranged on the telescopic end of the hydraulic rod and the female die base, a hull punching part arranged on the upper die frame and the female die base, and a reset assembly installed on the upper die frame and the hull punching part and corresponding to the punching part. When a sheet metal part is machined, the operations of punching and convex hull punching are completed through a single die, the machining procedures are reduced, the machining cost is reduced, meanwhile, when convex hull punching is conducted, the arranged heating piece can preheat the machining position of a workpiece, and the convex hull forming quality of the workpiece is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to stamping processing technical field, specifically, relate to a stamping part special-shaped convex molding mechanism. BACKGROUND

[0002] Stamping is a kind of pressure processing method that separates or plastically deforms material by using the die installed on the press to apply pressure to the material at room temperature, so as to obtain the required parts. The quality, production efficiency and production cost of stamping parts are directly related to die design and manufacturing. The level of die design and manufacturing technology is one of important signs to measure the manufacturing level of a country, which determines the quality, benefit and development ability of new products to a great extent.

[0003] Referring to Figure 1 , the sheet metal part 12 will form two hole grooves 13 and a plurality of convexes 14 on it after stamping.

[0004] And the traditional processing process carries out the convex punching and punching on the sheet metal part through two processes, needs to use two sets of dies, not only increases the die development cost, and the debugging die time is long when producing, the process is more, simultaneously, because of processing on two sets of dies, the parts need to be positioned for many times, will lead to the processing error caused by inaccurate positioning, so that the processing precision of finished sheet metal part will be affected, and when the convex punching operation is carried out, the material between the concave die and the punch is prone to fracture due to insufficient tensile force of the sheet metal part, which affects the production quality of the product. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a stamping part special-shaped convex molding mechanism to solve the above problems.

[0006] In order to realize the above purpose, the utility model embodiment provides a stamping part special-shaped convex molding mechanism, which comprises a lower die seat and an upper die seat, a lower die plate fixed on the upper surface of the lower die seat, a concave die seat installed in the lower die plate, an upper die frame installed on the lower surface of the upper die seat, a hydraulic rod installed on the upper die frame, a punching part arranged on the extension end of the hydraulic rod and the concave die seat, a convex punching part arranged on the upper die frame and the concave die seat, a reset assembly installed on the upper die frame and the convex punching part and corresponding to the punching part, a heating part arranged on the upper die frame and corresponding to the convex punching part, and two stable parts arranged between the upper die seat and the lower die seat, wherein

[0007] The punching part is suitable for pushing the reset assembly to move downward and is used for punching hole grooves on the sheet metal part;

[0008] The convex punching part is suitable for cooperating with the concave die seat to stamp convexes on the sheet metal part.

[0009] The reset assembly is adapted to limit the vertical movement of the punching member;

[0010] The heating member is adapted to preheat the punch member;

[0011] The two stabilizing members are adapted to ensure the stability of the downward movement of the upper die holder and improve the stability during the processing of the sheet metal part.

[0012] Optionally, the punch member comprises a plurality of protrusion starting punches movably mounted on the upper die holder in a rectangular array, a control plate fixed on the plurality of protrusion starting punches, a plurality of grooves opened on the upper surface of the die holder and corresponding to the plurality of protrusion starting punches, and a backing plate fixed on the upper surface of the control plate.

[0013] Optionally, the punching member comprises a punching seat fixedly connected to the extension end of the hydraulic rod, two punching heads symmetrically fixed to the bottom of the punching seat and movably arranged on the upper die holder and the control plate, a plurality of slide rods each fixedly connected to the upper die holder at one end and penetrating the punching seat at the other end and fixedly connected to the upper die holder, and two cutting grooves symmetrically opened on the die holder and corresponding to the two punching heads.

[0014] The lower ends of the two cutting grooves are conically arranged.

[0015] Optionally, the reset assembly comprises a plurality of limiting blocks arranged on the control plate in a rectangular array, a plurality of limiting rods each fixedly connected to the upper die holder at one end and penetrating the control plate at the other end and fixedly connected to the plurality of limiting blocks, and a plurality of reset springs each movably sleeved on the outside of the plurality of limiting rods.

[0016] The two ends of the reset spring are fixedly connected to the upper die holder and the control plate, respectively.

[0017] Optionally, the heating member comprises a plurality of assembly grooves opened on the upper die holder and corresponding to the plurality of protrusion starting punches, a plurality of heat preservation sleeves each installed in the plurality of assembly grooves, a plurality of heat conducting rings each installed in the plurality of heat preservation sleeves, and a plurality of heating rings each arranged between the plurality of heat conducting rings and the plurality of heat preservation sleeves.

[0018] The inner diameters of the heat conducting rings and the heat preservation sleeves are adapted to the outer diameters of the protrusion starting punches.

[0019] The plurality of heat conducting rings and the plurality of heat preservation sleeves are each sleeved on the outside of the plurality of protrusion starting punches.

[0020] Optionally, the stabilizing piece comprises two guide rods symmetrically fixed to the lower surface of the upper die holder, two guide grooves symmetrically formed in the lower die holder and corresponding to the two guide rods, and a supporting piece arranged on the lower die plate and the two guide rods.

[0021] The two guide rods are slidably inserted into the two guide grooves.

[0022] Optionally, the supporting piece comprises two movable grooves symmetrically formed in the lower die plate, two positioning rods slidably inserted into the two movable grooves, respectively, a wedge-shaped push block fixedly connected to the two positioning rods, a supporting plate arranged on the upper surface of the lower die plate and fixedly connected to the wedge-shaped push block, a wedge-shaped pressing block fixedly connected to the two guide rods and corresponding to the wedge-shaped push block, two receiving grooves symmetrically formed in the lower die plate, and two supporting springs sleeved on the outer portions of the two positioning rods and arranged in the receiving grooves, respectively.

[0023] The two ends of the supporting spring are fixedly connected to the wedge-shaped push block and the inner wall of the receiving groove, respectively.

[0024] Compared with the prior art, the embodiments of the utility model have the following beneficial effects:

[0025] After the punch-shaped protrusion forming mechanism completes the pressing and stabilizing of the metal sheet to be processed by controlling the lower die holder to move downward, the hydraulic rod pushes the punching part to complete the punching operation on the metal sheet, and then the protrusion forming operation on the metal sheet is completed by the continuous pushing of the hydraulic rod, so that the punching and protrusion forming of the metal sheet are completed at one time, the operation process is simplified, the turnover time and the mold debugging time between processes are saved, the processing efficiency of the metal sheet is effectively improved, and the positioning error of the metal sheet to be processed is prevented, so that the processing precision of the metal sheet is improved.

[0026] When the protrusion forming operation is performed, the heating part can heat the plurality of protrusion forming punches in the punch-shaped protrusion forming part, and when the upper die holder moves downward to press against the metal sheet, the plurality of protrusion forming punches remain in contact with the metal sheet by the resetting assembly, so that the metal sheet can be preheated before the plurality of protrusion forming punches perform the protrusion forming operation, the processing position of the metal sheet is slightly softened when the plurality of protrusion forming punches perform the protrusion forming operation, the deformation resistance is reduced, the processing position of the metal sheet is more easily deformed when the punch-shaped protrusion forming part performs the protrusion forming operation, and the workpiece is less likely to crack and wrinkle during the protrusion forming operation, so that the appearance and precision of the metal sheet are effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0027] The utility model is further illustrated below in combination with the drawings and embodiments.

[0028] Figure 1 The background technical drawing of the utility model is shown;

[0029] Figure 2 The perspective view of the utility model is shown;

[0030] Figure 3 The split perspective view of the utility model is shown;

[0031] Figure 4 The partial cutaway view of the utility model is shown;

[0032] Figure 5 The partial enlarged view of the utility model is shown;

[0033] Figure 6 The partial split perspective view of the utility model is shown;

[0034] Figure 7 The partial cutaway perspective view of the utility model is shown.

[0035] In the drawings

[0036] 1, lower die seat; 2, upper die seat; 3, lower die plate; 4, concave die seat; 5, upper die frame; 6, hydraulic rod; 7, punching part; 8, punch part; 9, reset component; 10, heating part; 11, stabilizing part; 12, sheet metal part; 13, hole and groove; 14, convex package; 15, convex punch; 16, control board; 17, recess; 18, backing plate; 19, punching seat; 20, punching head; 21, sliding rod; 22, cutting groove; 23, limiting block; 24, limiting rod; 25, reset spring; 26, assembly groove; 27, heat preservation sleeve; 28, heat conducting ring; 29, heating ring; 30, guide rod; 31, guide groove; 32, bracing part; 33, movable groove; 34, positioning rod; 35, wedge-shaped push block; 36, wedge-shaped push block; 37, storage groove; 38, jacking spring; 39, bracing plate. DETAILED DESCRIPTION

[0037] The utility model will be further explained in detail in combination with the drawings. These drawings are all simplified schematic views, just schematically show the basic structure of the utility model, therefore it just shows the structure related to the utility model.

[0038] As Figures 1-7The punch part irregular convex molding mechanism is characterized in that a lower die base 1 and an upper die base 2 are provided, a lower die plate 3 is fixed on the upper surface of the lower die base 1, a concave die base 4 is installed in the lower die plate 3, an upper die frame 5 is installed on the lower surface of the upper die base 2, a hydraulic rod 6 is installed on the upper die frame 5, a punching part 7 is arranged on the extension end of the hydraulic rod 6 and the concave die base 4, a punching part 8 is arranged on the upper die frame 5 and the concave die base 4, a reset assembly 9 is installed on the upper die frame 5 and the punching part 8 and corresponds to the punching part 7, a heating part 10 is arranged on the upper die frame 5 and corresponds to the punching part 8, and two stabilizing parts 11 are arranged between the upper die base 2 and the lower die base 1.

[0039] The punching part 7 is suitable for pushing the reset assembly 9 to move downward and punching a hole groove 13 on a sheet metal part 12.

[0040] The punching part 8 is suitable for cooperating with the concave die base 4 to punch a convex part 14 on the sheet metal part 12.

[0041] The reset assembly 9 is suitable for limiting the vertical movement of the punching part 7.

[0042] The heating part 10 is suitable for preheating the punching part 8.

[0043] Two said stable pieces 11 are suitable for ensuring the stability of the downward movement of the upper die holder 2 and improving the stability of the sheet metal part 12 during processing. During use, the workpiece to be processed is loaded onto the lower die plate 3, and then the upper die holder 2 moves downward to drive the upper die frame 5 to move downward and press the workpiece to be processed. At the same time, the two stable pieces 11 can ensure the stability of the upper die holder 2 during movement, effectively improve the pressing stability of the workpiece by the upper die frame 5, and at the same time, the two supporting pieces 32 in the two stable pieces 11 cooperate to clamp the side surface of the workpiece, so that the subsequent processing of the sheet metal part 12 is not prone to deformation, improving the processing quality of the workpiece. When the sheet metal part 12 is pressed and stabilized by the upper die frame 5, the plurality of convex punch heads 15 in the punch pack 8 are in contact with the sheet metal part 12. At this time, the heating piece 10 works to heat the plurality of convex punch heads 15, so that the position to be processed of the sheet metal part 12 is preheated, and then when the punch pack 8 works, the position of the sheet metal part 12 that needs to be bumped 14 is slightly softened, reducing its deformation resistance, so that it is easier to deform during processing. When the bump 14 is formed, the workpiece is not prone to cracking and wrinkling, improving the appearance and precision of the sheet metal part 12. Finally, after the hydraulic rod 6 works to control the punching piece 7 to complete the punching of the sheet metal part 12, the punch pack 8 is driven to work, and the hole and groove 13 and the plurality of bumps 14 on the sheet metal part 12 are completed at one time in a single processing, avoiding the punching and bumping of the sheet metal part 12 being completed by two sets of molds and two processes, simplifying the operation process, saving the turnover time and mold debugging time between processes, effectively improving the processing efficiency of the sheet metal part 12, and preventing the processed sheet metal part 12 from needing to be positioned multiple times and positioning inaccurately to cause processing errors, thereby improving the processing precision of the sheet metal part 12. After punching and bumping are completed, the plurality of convex punch heads 15 in the punch bumping piece are lifted and reset under the control of the reset assembly 9 to avoid affecting the unloading of the finished sheet metal part 12.

[0044] Optionally, the punch pack 8 comprises a plurality of convex punch heads 15 movably mounted in a rectangular array on the upper die frame 5, a control plate 16 fixed on the plurality of convex punch heads 15, a plurality of grooves 17 opened on the upper surface of the concave die holder 4 corresponding to the plurality of convex punch heads 15, and a backing plate 18 fixed on the upper surface of the control plate 16. After the punching piece 7 moves downward to complete the punching, the punching seat 19 continues to move downward to approach and press the control plate 16, which can push the plurality of convex punch heads 15 to move downward and contact the workpiece, and then under the cooperation of the plurality of grooves 17 on the concave die holder 4, a plurality of bumps 14 are formed on the workpiece. The backing plate 18 is provided to play a buffering role to slow down the pressure and avoid deformation and damage of the punching seat 19 and the control plate 16.

[0045] Optionally, the punching member 7 comprises a punching seat 19 fixedly connected to the telescopic end of the hydraulic rod 6, two punching heads 20 symmetrically fixed to the bottom of the punching seat 19 and movably arranged on the upper die frame 5 and the control plate 16, one end of each of the punching heads 20 is fixedly connected to the upper die frame 5, the other end of each of the punching heads 20 penetrates through the punching seat 19 and is fixedly connected to the upper die seat 2, a plurality of slide rods 21 are arranged on the upper die frame 5 and the control plate 16, one end of each of the slide rods 21 is fixedly connected to the upper die frame 5, the other end of each of the slide rods 21 penetrates through the control plate 16 and is fixedly connected to the control plate 16, and two cutting grooves 22 are symmetrically arranged on the lower die seat 4 and correspond to the two punching heads 20;

[0046] The lower ends of the two cutting grooves 22 are conically arranged, when the upper die seat 2 moves downward, the upper die frame 5 presses the workpiece to be processed against the lower die plate 3, the hydraulic rod 6 is arranged to work, the punching seat 19 is stably pushed to move downward under the limitation of the plurality of slide rods 21, and then the two punching heads 20 are pushed to move downward and abut against the workpiece to be processed, the workpiece is punched by cooperating with the two cutting grooves 22, and because the lower ends of the two cutting grooves 22 are conically arranged, the aperture of the cutting groove 22 close to the lower die seat 1 is larger than the aperture of the cutting groove 22 close to the punching head 20, so that the punching waste can be prevented from being stuck in the cutting groove 22, and the punching waste is conveniently discharged.

[0047] Optionally, the reset assembly 9 comprises a plurality of limiting blocks 23 arranged in a rectangular array on the control plate 16, one end of each of the limiting blocks 23 is fixedly connected to the upper die frame 5, the other end of each of the limiting blocks 23 penetrates through the control plate 16 and is fixedly connected to a plurality of limiting rods 24, and a plurality of reset springs 25 are movably sleeved on the plurality of limiting rods 24;

[0048] The two ends of the reset spring 25 are fixedly connected to the upper die frame 5 and the control plate 16, when the punching seat 19 moves downward, the control plate 16 moves downward and is stably pushed to move downward under the guidance and limitation of the plurality of limiting rods 24, the work of forming the convex bump 14 is completed, the plurality of reset springs 25 are deformed by being pressed, with the upward movement of the punching seat 19, the control plate 16 is pushed under the elastic force of the plurality of reset springs 25, is guided and reset under the limitation of the plurality of limiting rods 24, and is prevented from abutting against the sheet metal part 12 after the plurality of convex punching heads 15 move upward and reset on the upper die frame 5, so as to affect the blanking of the sheet metal part 12, at this time, the plurality of limiting blocks 23 limit the upward position of the control plate 16, so as to prevent the plurality of convex punching heads 15 from being separated from the upper die frame 5 and affecting the use of the subsequent convex punching head 15; meanwhile, the upper die frame can make the plurality of convex punching heads 15 keep the sheet metal part 12 under the elastic force of the plurality of reset springs 25 when pressing the sheet metal part 12, so as to facilitate the preheating of the heating part 10 to the sheet metal part 12.

[0049] Optionally, the heating element 10 comprises a plurality of assembly grooves 26 opened on the upper die frame 5 and corresponding to a plurality of the male punch 15, a plurality of heat preservation sleeves 27 respectively installed in a plurality of the assembly grooves 26, a plurality of heat conduction rings 28 respectively installed in a plurality of the heat preservation sleeves 27, and a plurality of heating rings 29 respectively arranged between a plurality of the heat conduction rings 28 and a plurality of the heat preservation sleeves 27;

[0050] The inner diameter of the heat conduction ring 28 and the heat preservation sleeve 27 is matched with the outer diameter of the male punch 15;

[0051] A plurality of the heat conduction rings 28 and a plurality of the heat preservation sleeves 27 are respectively sleeved on the outside of a plurality of the male punch 15. In use, a plurality of the heating rings 29 arranged are heated, and then a plurality of the male punch 15 is heated under the cooperation of a plurality of the heat conduction rings 28. When the upper die frame 5 is clamped with the lower die plate 3 to the workpiece to be processed, a plurality of the male punch 15 is in contact with the workpiece to be processed. Thus, when the punching element 7 punches the workpiece, a plurality of the male punch 15 preheats a plurality of positions of the workpiece. When the coining element 8 coining the workpiece to form the convex 14, the workpiece processing position is slightly softened, the deformation resistance is reduced, the workpiece processing position is more easily deformed, the workpiece is not prone to cracking and wrinkling when the convex 14 is formed, and the appearance and precision of the sheet metal part 12 are improved.

[0052] Optionally, the stabilizing element 11 comprises two guide rods 30 symmetrically fixed to the lower surface of the upper die seat 2, two guide grooves 31 symmetrically opened on the lower die seat 1 and corresponding to the two guide rods 30, and a supporting element 32 arranged on the lower die plate 3 and the two guide rods 30;

[0053] The two guide rods 30 are slidably inserted into the two guide grooves 31. When the upper die seat 2 moves downward, the two guide rods 30 are movably arranged in the two guide grooves 31. Then, under the cooperation of the two stabilizing elements 11, the plurality of guide rods 30 are positioned and guided for the vertical movement of the upper die seat 2, effectively improving the stability of the vertical movement of the upper die seat 2, and ensuring the accuracy of the processing of the sheet metal part 12.

[0054] Optionally, the supporting element 32 comprises two movable grooves 33 symmetrically opened in the lower die plate 3, two positioning rods 34 respectively slidably inserted into the two movable grooves 33, a wedge-shaped push block 35 fixedly connected with the two positioning rods 34, a supporting plate 39 arranged on the upper surface of the lower die plate 3 and fixedly connected with the wedge-shaped push block 35, a wedge-shaped pressing block 36 fixedly connected with the two guide rods 30 and corresponding to the wedge-shaped push block 35, two receiving grooves 37 symmetrically opened on the lower die plate 3, and two supporting springs 38 respectively sleeved on the outside of the two positioning rods 34 and arranged in the receiving grooves 37.

[0055] Two ends of the top supporting spring 38 are fixedly connected with the wedge-shaped pressing block 35 and the inner wall of the receiving groove 37 respectively. When the upper die seat 2 moves downward, the upper die frame 5 moves downward, and the two positioning rods 34 move downward, driving the wedge-shaped pressing block 36 to move downward, and then contact and push the wedge-shaped pressing block 35 to move, and then drive the supporting plate 39 to move on the lower die plate 3, and press the side wall of the workpiece to be processed, so that the two supporting plates 39 cooperate to clamp the workpiece to be processed, effectively improving the stability of the workpiece during processing, reducing the deformation of the workpiece during punching and bulging of the convex part 14, and ensuring the quality of the finished sheet metal part 12. When the wedge-shaped pressing block 35 moves, the two positioning rods 34 move in the two movable grooves 33 respectively, effectively ensuring the stability of the horizontal movement of the wedge-shaped pressing block 35, and the wedge-shaped pressing block 35 will extrude and compress the two top supporting springs 38 into the two receiving grooves 37. After the workpiece is processed, the control of the wedge-shaped pressing block 36 on the wedge-shaped pressing block 35 is released, and then the wedge-shaped pressing block 35 and the supporting plate 39 are reset under the pushing of the two top supporting springs 38, so that the finished sheet metal part 12 is separated from the lower die plate 3.

[0056] The above only describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A stamping part irregular convex bulge forming mechanism, characterized in that, The application relates to a punch part special-shaped convex forming mechanism, which comprises a lower die base (1), an upper die base (2), a lower die plate (3) fixed on the upper surface of the lower die base (1), a concave die base (4) installed in the lower die plate (3), an upper die frame (5) installed on the lower surface of the upper die base (2), a hydraulic rod (6) installed on the upper die frame (5), a punching part (7) arranged on the telescopic end of the hydraulic rod (6) and the concave die base (4), a punch part (8) arranged on the upper die frame (5) and the concave die base (4), a reset assembly (9) installed on the upper die frame (5) and the punch part (8) and corresponding to the punching part (7), a heating part (10) arranged on the upper die frame (5) and corresponding to the punch part (8), and two stabilizing parts (11) arranged between the upper die base (2) and the lower die base (1), wherein the punching part (7) is suitable for pushing the reset assembly (9) to move downwards and punching a hole groove (13) on a sheet metal part (12); the punch part (8) is suitable for cooperating with the concave die base (4) to punch a convex part (14) on the sheet metal part (12); the reset assembly (9) is suitable for limiting the vertical movement of the punching part (7); the heating part (10) is suitable for preheating the punch part (8); the two stabilizing parts (11) are suitable for ensuring the stability of the downward movement of the upper die base (2) and improving the stability during the processing of the sheet metal part (12).

2. The punch part special-shaped convex forming mechanism according to claim 1, wherein the punch part (8) comprises a plurality of convex starting punches (15) movably installed on the upper die frame (5) in a rectangular array, a control plate (16) fixed on the plurality of convex starting punches (15), a plurality of grooves (17) formed on the upper surface of the concave die base (4) and corresponding to the plurality of convex starting punches (15), and a backing plate (18) fixed on the upper surface of the control plate (16).

3. The punch part special-shaped convex forming mechanism according to claim 2, wherein the punching part (7) comprises a punching seat (19) fixedly connected to the telescopic end of the hydraulic rod (6), two punching heads (20) symmetrically fixed on the bottom of the punching seat (19) and movably arranged on the upper die frame (5) and the control plate (16), a plurality of slide rods (21) each fixedly connected to one end of the upper die frame (5) and penetrating through the other end of the punching seat (19) and being fixedly connected to the upper die base (2), and two cutting grooves (22) symmetrically formed on the concave die base (4) and corresponding to the two punching heads (20); the lower ends of the two cutting grooves (22) are conically arranged.

4. The punch part special-shaped convex forming mechanism according to claim 3, wherein ​ The reset assembly (9) comprises a plurality of limiting blocks (23) arranged in a rectangular array on the control plate (16), one end of each of which is fixedly connected with the upper die holder (5), the other end of each of which penetrates the control plate (16), and a plurality of limiting rods (24) respectively fixedly connected with the plurality of limiting blocks (23), and a plurality of reset springs (25) respectively movably sleeved outside the plurality of limiting rods (24); Both ends of the reset spring (25) are fixedly connected with the upper die holder (5) and the control plate (16) respectively.

5. The punch part irregular convex bundle forming mechanism according to claim 4, characterized in that, The heating member (10) comprises a plurality of assembly grooves (26) opened in the upper die holder (5) and corresponding to the plurality of convex starting punches (15), a plurality of heat preservation sleeves (27) respectively installed in the plurality of assembly grooves (26), a plurality of heat conducting rings (28) respectively installed in the plurality of heat preservation sleeves (27), and a plurality of heating rings (29) respectively arranged between the plurality of heat conducting rings (28) and the plurality of heat preservation sleeves (27); The inner diameters of the heat conducting ring (28) and the heat preservation sleeve (27) are matched with the outer diameter of the convex starting punch (15); The plurality of heat conducting rings (28) and the plurality of heat preservation sleeves (27) are respectively sleeved outside the plurality of convex starting punches (15).

6. The punch part irregular convex bundle forming mechanism according to claim 1, characterized in that, The stabilizing member (11) comprises two guide rods (30) symmetrically fixed to the lower surface of the upper die holder (2), two guide grooves (31) symmetrically opened in the lower die holder (1) and corresponding to the two guide rods (30), and a supporting member (32) arranged on the lower die plate (3) and the two guide rods (30); The two guide rods (30) are slidably inserted into the two guide grooves (31).

7. The punch part irregular convex bundle forming mechanism according to claim 6, characterized in that, The supporting member (32) comprises two movable grooves (33) symmetrically opened in the lower die plate (3), two positioning rods (34) respectively slidably inserted into the two movable grooves (33), a wedge-shaped push block (35) fixedly connected with the two positioning rods (34), a supporting plate (39) arranged on the upper surface of the lower die plate (3) and fixedly connected with the wedge-shaped push block (35), a wedge-shaped pressing block (36) fixedly connected with the wedge-shaped push block (35) and corresponding to the two guide rods (30), two receiving grooves (37) symmetrically opened in the lower die plate (3), and two supporting springs (38) respectively sleeved outside the two positioning rods (34) and arranged in the receiving grooves (37); Both ends of the supporting spring (38) are fixedly connected with the wedge-shaped push block (35) and the inner wall of the receiving groove (37) respectively.

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