CN118162531A - Continuous stamping mechanism - Google Patents

Abstract

The application belongs to the field of machining, and particularly relates to a continuous stamping mechanism which comprises a frame, an upper die and a lower die; the lower die comprises a cylindrical lower die body and a plurality of die grooves formed along the circumferential surface of the die body, and the lower die body is rotationally connected with the frame; the upper die comprises an upper die body fixedly connected with the frame and a punch matched with the die cavity, and the punch is movably connected with the upper die body through a driving piece; the frame includes the support body with fixed set up in material loading slide, the unloading slide of support body, the height of material loading slide is along with being close to the lower mould is progressively decreased, the height of unloading slide is along with keeping away from the lower mould is progressively decreased. The full-automatic feeding and discharging machine has the effect of full-automatic feeding and discharging.

Description

Continuous stamping mechanism

Technical Field

The application relates to the field of machining, in particular to a continuous stamping mechanism.

Background

Stamping is a common metal forming process, in which a metal plate or other shaped metal piece is placed in a die by a stamping machine, and is formed into a desired shape by stamping. The processing mode is widely applied to the fields of automobile manufacture, household appliance manufacture and the like, and has the advantages of high efficiency, high precision, low cost and the like.

In the stamping process, common structures include punches, dies, power units, and the like. The punch is responsible for applying the punching force, and the die is a tool which plays a role in shaping in the punching process. When the blank to be processed is placed in the die, the punch applies pressure, and the blank is deformed into a preset workpiece under the action of external pressure.

Along with the continuous improvement of production efficiency, the traditional manual feeding and discharging mode can not meet the production requirement. The manual operation has the problems of high labor intensity, low efficiency, poor stability and the like, is easily influenced by human factors, and reduces the production efficiency and the quality stability. Therefore, a stamping structure capable of automatically realizing loading and unloading is needed, so that the production efficiency is improved, the labor intensity is reduced, and the stability of the product quality is ensured. The automatic stamping structure can be realized by carrying automatic feeding devices, machine vision systems and other technologies.

Disclosure of Invention

In order to solve the problems, the application provides a continuous stamping mechanism for automating the whole stamping process.

The application provides a continuous stamping mechanism which adopts the following technical scheme:

a continuous stamping mechanism comprises a frame, an upper die and a lower die; the lower die comprises a cylindrical lower die body and a plurality of die grooves formed along the circumferential surface of the die body, and the lower die body is rotationally connected with the frame; the upper die comprises an upper die body fixedly connected with the frame and a punch matched with the die cavity, and the punch is movably connected with the upper die body through a driving piece; the frame includes the support body with fixed set up in material loading slide, the unloading slide of support body, the height of material loading slide is along with being close to the lower mould is progressively decreased, the height of unloading slide is along with keeping away from the lower mould is progressively decreased.

Through adopting above-mentioned technical scheme, the former base of waiting to process in the material loading slide is piled up near the lower mould by gravity effect, in the die cavity was filled to former base of forefront, the former base in the die cavity was driven in the rotation of lower die body reached the processing station, simultaneously with the rotatory unloading of work piece that has processed, the drift is gone into in the die cavity under the driving piece effect messenger former base shaping work piece, so the circulation, accomplish the unloading voluntarily in the rotatory in-process of lower die body, the last unloading of continuous stamping process is accomplished voluntarily, need not artifical the participation.

Optionally, the feeding slideway is gradually narrowed at one end close to the lower die so as to guide the blank to be processed to the die cavity, and the inner wall of the die cavity is a part of the revolving body.

By adopting the technical scheme, the raw blank is automatically collected near the die cavity, and the feeding process is more accurate.

Optionally, the continuous stamping mechanism further comprises a first inductance assembly, wherein the first inductance assembly comprises first inductance wires arranged in the circumferential surface of the punch head, and the first inductance wires are used for generating an induction field in the surrounding space of the punch head.

By adopting the technical scheme, after stamping is finished, the first inductance component is started, the workpiece is heated, the residual internal stress of the workpiece is eliminated, and the size rebound and the hot cracking and cold cracking risks after demolding are reduced.

Optionally, the upper die further comprises a demolding blocking sleeve sleeved outside the punch and fixedly connected with the upper die body, the punch is in sliding fit with the demolding blocking sleeve, and the distance between the outer wall of the punch and the inner wall of the demolding blocking sleeve is smaller than the wall thickness of a machined workpiece.

Through adopting above-mentioned technical scheme, after the work piece shaping, the drift is retracted, if the work piece adhesion is on the drift, then the drawing of patterns keeps off the cover and can assist drift and work piece drawing of patterns, guarantees the smoothness of unloading process.

Optionally, an insulating layer is arranged on the inner wall of the demolding blocking sleeve and the inner wall of the mold cavity.

By adopting the technical proposal, the induction field generated by the first inductance component is restrained, thereby greatly reducing the eddy current in the upper die body and the lower die body, avoiding the softening of the upper die body and the lower die body caused by induction annealing,

Optionally, the continuous stamping mechanism further includes a second inductance component, where the second inductance component includes a second resistance wire disposed on one end of the feeding slideway near the lower die, and is configured to generate an induction field in a space above the feeding slideway.

By adopting the technical scheme, the temperature can be quickly increased in the process of blank feeding, and further the processing effect similar to hot forging is realized in a crystal state with a good plastic state.

Optionally, the continuous stamping mechanism further includes a conveying auxiliary assembly, and the conveying auxiliary assembly includes a baffle plate, where the baffle plate is disposed between the feeding slideway and the upper die and covers a part of the surface of the lower die body.

By adopting the technical scheme, the blank is not easy to fall off from the die cavity during the process of being conveyed from the feeding slideway to the processing station.

Optionally, the conveying auxiliary assembly further comprises fins, wherein the fins and the baffle are hollow structures and are mutually communicated, and the communicated accommodating cavity is filled with phase-change cooling liquid.

By adopting the technical scheme, the phase-change cooling liquid absorbs heat from the blank or the lower die, is gasified and rises, releases heat in the fins, is liquefied and falls back, and is circulated back and forth to realize heat export, thereby having the effects of reducing the temperature of the lower die body and prolonging the service life of the mechanism.

Optionally, the frame further includes a material arranging strip, and the material arranging strip is equidistantly arranged on the upper surface of the feeding slideway and is parallel to the rotation axis of the lower die body.

Through adopting above-mentioned technical scheme, to the bar-shaped primitive blank, when the angle deviation of primitive blank presets, the front end of primitive blank can constantly be contradicted with the material arranging strip in the in-process of material loading, until its axis and the parallel position of material arranging strip.

Optionally, the lower mould still includes setting up in every the drawing of patterns jump of die cavity bottom, the drawing of patterns jump include with processing work piece bottom shape matching the roof with set up in between the roof with the die cavity bottom, the elastic limit of spring, the yield strength of former base, the yield strength of drawing of patterns jump increases gradually.

By adopting the technical scheme, after the stamping processing is finished, the workpiece is ejected out by the demoulding jump, so that the demoulding of the workpiece is facilitated.

In summary, the present application includes at least one of the following beneficial technical effects:

1. The feeding of the blank to be processed and the discharging of the finished workpiece are automatically realized along with the rotation of the lower die body, so that the manual participation is not needed, the production efficiency is improved, and the labor intensity is reduced;

2. after the workpiece is molded, the workpiece is heated by the first inductance component, residual internal stress is eliminated by normalizing, and size rebound and hot cracking and cold cracking risks after demolding are reduced;

3. the primary blank is heated by the second inductance component before stamping, so that the primary blank in the stamping process has stronger plasticity, and a larger stamping stretching ratio can be realized.

Drawings

FIG. 1 is an overall construction view of a continuous press mechanism according to embodiment 1 of the present application;

FIG. 2 is a schematic cross-sectional view of a continuous stamping mechanism according to embodiment 1 of the present application;

FIG. 3 is an enlarged partial view of area A of FIG. 2;

FIG. 4 is a schematic view of a structure of a continuous stamping mechanism according to embodiment 2 of the present application after removing a baffle and a part of a frame;

FIG. 5 is an overall construction view of a continuous press mechanism according to embodiment 3 of the present application;

FIG. 6 is a schematic cross-sectional view of a continuous stamping mechanism according to embodiment 3 of the present application;

FIG. 7 is an enlarged partial view of region B of FIG. 6;

FIG. 8 is a schematic view of the workpiece molding of embodiment 3 of the present application;

fig. 9 is a schematic diagram of the formation of a prior art stamped right angle outer wall workpiece.

Reference numerals illustrate: 1. a frame; 11. a frame body; 12. a feeding slideway; 121. a bottom support; 122. a guide plate; 13. a blanking slideway; 14. a monolith strip; 2. a lower die; 21. a lower die body; 22. a die cavity; 23. demolding the jump; 231. a top plate; 232. a spring; 3. an upper die; 31. an upper die body; 32. a punch; 33. demolding the retaining sleeve; 4. a transfer assist assembly; 41. a baffle; 42. fins; 51. a first inductance wire; 61. a second inductance wire; 7. a workpiece; 8. unfilled corners.

Detailed Description

The application is described in further detail below with reference to fig. 1-9.

The stamping processing is a production and manufacturing method for processing workpieces by utilizing the plasticity of metal materials, and the conventional stamping processing technology has the characteristics of high efficiency, high precision, wide applicability, low cost and the like, and has wide application in manufacturing industry.

However, even though the stamping process can process metal materials with various shapes, including thin plates, pipes and the like, the applicability is very wide, in the practical application process, different upper and lower die shapes and different processing procedures are required to be matched for different workpieces, for example, a composite punch can be used for realizing the forming of the workpieces and the removal of waste materials in one stamping process for a thin plate blank; for parts with larger stretching depth, the punches with different sizes are usually replaced to stretch layer by layer so as to avoid surface scratch and even tearing. The feeding and discharging processes need manual operation by workers, and safety accidents caused by various safety measures and system guarantees are still not few each year. Moreover, for a workpiece requiring multiple presses, alignment after each press is also a problem, and even though deviations in alignment can be compensated in appearance by virtue of the plasticity of the metal, residual stresses within the metal can degrade the function of the workpiece.

The embodiment of the application discloses a continuous stamping mechanism.

Example 1

Referring to fig. 1 and 2, the continuous stamping mechanism includes a frame 1, and an upper die 3 and a lower die 2 connected to the frame 1.

The frame 1 comprises a frame body 11, and a feeding slide rail 12 and a discharging slide rail 13 which are fixedly arranged on the frame body 11, wherein the height of the feeding slide rail 12 decreases along with the approach to the lower die 2, and the height of the discharging slide rail 13 decreases along with the distance from the lower die 2. Optionally, the feeding slideway 12 and the discharging slideway 13 in this embodiment aim at the blank which can roll, and for the plate or block which is difficult to roll or slide, the feeding slideway 12 can be adjusted to be a conveyor belt, or a magnetic tractor is additionally arranged below the feeding slideway 12.

The lower die 2 comprises a cylindrical lower die body 21 and a plurality of die grooves 22 formed along the circumferential surface of the lower die body 21, the lower die body 21 is rotationally connected with the frame 1, the rotation axis is horizontal and vertical to the conveying direction of the blank of the workpiece 7, the inner wall of the die groove 22 is a part of a revolving body, the cross section area of the die groove 22 in the direction vertical to the depth direction is constant, or the cross section area of the die groove 22 in the direction vertical to the depth direction is increased along with the approaching of the opening. The lower die body 21 is preferably rotated by a servo motor.

Illustratively, the inner wall of the cavities 22 in this embodiment is a portion of a cylinder, and the axis of each cavity 22 is located in the same plane perpendicular to the axis of the lower die body 21. Correspondingly, the loading slideway 12 comprises a bottom support 121 and guide plates 122 arranged on two sides of the bottom support 121, the bottom support 121 is gradually narrowed at one end of the loading slideway 12 close to the lower die 2, and the distance between the guide plates 122 is gradually reduced for guiding the blank to be processed to the die cavity 22.

Referring to fig. 3, the upper die 3 includes an upper die body 31, a demolding blocking sleeve 33, and a punch 32 matched with the die cavity 22, the upper die body 31 is fixedly connected with the frame 1, the punch 32 is movably connected with the upper die body 31 through a driving member, the driving member is optionally a pneumatic pump, a hydraulic pump, a motor, etc., the demolding blocking sleeve 33 is sleeved outside the punch 32 and is fixedly connected with the upper die body 31, when the punch 32 is driven by the driving member to move up and down, the punch 32 is in sliding fit with the demolding blocking sleeve 33, and the distance between the outer wall of the punch 32 and the inner wall of the demolding blocking sleeve 33 is smaller than the wall thickness of the machined workpiece 7.

Preferably, the lower die 2 further comprises a stripper bar 23 arranged at the bottom of each die cavity 22, the stripper bar 23 comprises a top plate 231 matched with the bottom of the processing workpiece 7 in shape and a spring 232 arranged between the top plate 231 and the bottom of the die cavity 22, and the elastic limit of the spring 232, the yield strength of the blank and the yield strength of the stripper bar 23 are sequentially increased. When the punch 32 is pushed into the die cavity 22 to press the blank, the spring 232 is pressed, and the top plate 231, the inner wall of the die cavity 22 and the punch 32 apply external stress to the blank to form the blank.

Preferably, the continuous stamping mechanism further comprises a conveying auxiliary assembly 4, the conveying auxiliary assembly 4 comprises a baffle 41, the baffle 41 is arranged between the feeding slideway 12 and the upper die 3, part of the surface of the lower die body 21 is covered, the inner side shape of the baffle is preferably a part of a cylindrical surface, and the baffle is used for preventing the blank from accidentally falling off in the process of conveying from the feeding slideway 12 to the upper die 3.

The implementation principle of the embodiment 1 is as follows:

raw blanks to be processed are input into the feeding slide way 12, move towards the lower die 2 along the feeding slide way 12 under the action of gravity, are guided into a row by the guide plate 122 at one end of the feeding slide way 12 close to the lower die 2, enter the die cavity 22 at the forefront, are blocked by the raw blanks in the die cavity 22, and stay in the feeding slide way 12.

The lower die body 21 rotates, the specific rotation angle is the central angle corresponding to the two adjacent die grooves 22, and the blank in the die groove 22 moves upwards until the die groove 22 is aligned with the punch 32; the subsequent blank is pushed against by the lower die body 21 until the next die cavity 22 is exposed, and the foremost blank enters the die cavity 22.

The punch 32 is driven into the die cavity 22 by the driving member, the spring 232 is elastically deformed first, until the compression is limited, the pressure between the upper die 2 and the lower die 2 is continuously increased, the yield limit of the blank is exceeded, and the blank is co-extruded by the inner wall of the die cavity 22, the top plate 231 and the punch 32, and is plastically deformed and formed into the workpiece 7.

The punch 32 is retracted, and the blank is retained in the cavity 22 or is retracted with the punch 32 and then is separated from the punch 32 and falls back into the cavity 22 after being held against by the stripper sleeve 33.

The lower die body 21 rotates and the above steps are repeated, the blanks are punched and formed one by one, and the formed workpieces 7 rotate along with the lower die body 21 in the process of blank feeding, fall to the blanking slideway 13 under the action of gravity and are collected. The setting of the demoulding jump 23 can eject the workpiece 7, so that the thin-wall part is prevented from being detained in the die cavity 22 due to the small gravity.

Example 2

Referring to fig. 4, this embodiment is different from embodiment 1 in that:

The blank to be processed in this embodiment is a cylinder, and the punch 32 and the die cavity 22 are correspondingly matched with each other. In addition, the frame 1 further comprises a material strip 14, wherein the material strips 14 are arranged on the upper surface of the feeding slideway 12 at equal intervals and are parallel to the rotation axis of the lower die body 21.

The implementation principle of the embodiment 2 is as follows:

For cylindrical blanks, when the blank rolls on the feeding slide 12, if an included angle exists between the axis of the blank and the rotation axis of the lower die body 21, that is, one end of the blank is closer to the lower die 2 than the other end, we call the former lower end and the latter upper end. In addition to receiving both supporting force and friction force from the feeding slideway 12 and friction force from the material arranging strip 14, the lower end of the blank continuously collides with the material arranging strip 14 in the process of rolling the blank down the die 2, and although the collision does not stop the rolling of the blank, only the lower end of the blank is collided, and the unbalanced stress state can lead the blank to gradually adjust the posture until the axis of the blank is parallel to the rotation axis of the lower die body 21.

Example 3

Referring to fig. 5 and 6, this embodiment is different from embodiment 1 in that:

The present embodiment further includes a first inductance assembly and a second inductance assembly, and the transfer assist assembly 4 includes a baffle 41 and a fin 42.

Referring to fig. 7, the first inductance assembly includes a first inductance wire 51 disposed in a circumferential surface of the punch 32, for forming an induction field in a space near the punch 32, wherein an insulating layer is disposed on an inner wall of the stripper sleeve 33, an inner wall of the cavity 22, and a top plate 231, and the stripper sleeve 33 is movably connected with the upper mold body 31 through a driving member, and when the stripper sleeve 33 is located at a lower limit position, a lower end of the stripper sleeve 33 abuts against the lower mold body 21.

Preferably, the first inductance wires 51 have even number groups, and are circumferentially arrayed about the axis of the punch 32, and adjacent first inductance wires 51 have opposite polarities at any working time, so that compared with the embodiment in which one first inductance wire 51 is spirally wound around the circumferential surface of the punch 32, the induction fields of the first inductance assembly in the embodiment at the axis of the punch 32 cancel each other, the magnetic induction strength is always zero, and the punch 32 is prevented from being changed in physical properties and distorted in size due to induction heating.

The second inductance assembly is arranged at one end of the feeding slideway 12, which is close to the lower die 2, and comprises second inductance wires 61 arranged at two sides of the feeding slideway 12, and the second inductance wires 61 are used for generating an induction field in the upper space of the feeding slideway 12, and the directions of magnetic induction wires generated in the upper space of the feeding slideway 12 are the same.

The fins 42 are arranged on one side of the baffle 41, which is away from the lower die 2, and the baffle 41 and the fins 42 are hollow and mutually communicated to form a containing cavity, and the containing cavity is filled with phase-change cooling liquid. The baffle 41 and fins 42 are preferably copper.

Preferably, at the end of the baffle 41 near the loading chute 12, the gap between the baffle 41 and the lower die body 21 decreases with distance from the loading chute 12. Specifically, after the blank enters the die cavity 22 via the feed chute 12, the gap between the top plate 231 and the baffle 41 is larger than the height of the blank, and as the gap is gradually narrowed, the spring 232 is compressed, and the blank collides with the baffle 41.

The implementation principle of the embodiment 3 is as follows:

At the end of the feeding channel near the lower die 2, the second inductance assembly is started, and the second inductance wire 61 is fed with high-frequency alternating current to generate vortex in the raw blank and rapidly raise the temperature to the hot forging temperature, and for the iron-carbon alloy with carbon content between 0.77% and 2.11%, the raw blank should be raised to 200 ℃ above the austenite transformation critical temperature.

The heated blank is filled into the mold cavity 22 and then moves towards the upper mold 3, because the gap between the top plate 231 and the lower mold body 21 is gradually narrowed, the upper surface of the blank is abutted against the baffle 41, and because the temperature is far higher than the boiling point of the phase-change cooling liquid, the phase-change cooling liquid absorbs heat rapidly to gasify, and gasified steam enters the fins 42 and falls back into the baffle 41 after being liquefied when meeting cold. The temperature of the upper surface of the blank is rapidly lowered by such circulation, the temperature lowering range can be adjusted by controlling the rotation speed of the lower die body 21 and the specification of the conveying auxiliary assembly 4, the temperature of the upper surface of the blank is lower than the austenite transformation critical temperature of the blank in the embodiment, when the blank reaches the stamping station, part of cementite is precipitated on the upper surface of the blank in a microscopic level, and the inside of the blank is still kept in an austenite phase with better plasticity.

Referring to fig. 8, the punch 32 is pressed down, and because the upper surface of the blank is doped with the second phase, the upper surface of the blank in contact with the punch 32 is strengthened, deformation thereof occurs later than deformation of the lower surface in contact with the top plate 231, the blank is filled into the corner region between the top plate 231 and the inner wall of the die cavity 22, and then the blank is filled between the outer wall of the punch 32 and the inner wall of the die cavity 22.

If there is no previous precipitation strengthening, referring to fig. 9, the part of the blank in contact with the punch 32 reaches the yield limit before the part of the blank in contact with the top plate 231 due to the wear of the inside of the blank and the friction of the blank with the die cavity 22, the blank deforms and overflows between the outer wall of the punch 32 and the inner wall of the die cavity 22, during which the part of the stamping work is converted into heat energy, the case with lower blank temperature is punched out, and the forming front of the workpiece 7 between the outer wall of the punch 32 and the inner wall of the die cavity 22 always has higher temperature and better plasticity; while the part of the blank contacting the top plate 231 is delayed and does not deform, a large amount of deformation energy is accumulated due to the stamping, and the deformation energy is used as a driving force for recrystallization to enable the blank to be locally recrystallized, so that the corner area between the top plate 231 and the inner wall of the die cavity 22 is more difficult to fill, and finally, the unfilled corner 8 of the workpiece 7 is caused, which is one of the reasons that the conventional stamping process is difficult to form the cylindrical appearance surface in a single stroke.

It should be noted that during the pressing of the punch 32, strain strengthening is theoretically present in the portion of the blank in contact with the top plate 231, but is present throughout the blank and is therefore not analyzed until the processing device is destroyed. And, in figures 8 and 9, the dimensional proportions of the punch 32 and die cavity 22 are greatly exaggerated for clarity of illustration, with a much smaller gap therebetween than illustrated in the figures during actual production.

After the stamping is completed, the second inductance assembly is started, the second inductance wire 61 is fed with high-frequency alternating current, and the workpiece 7 is heated to 30-50 ℃ above the austenite transformation critical temperature. The stripper sleeve 33 is pressed down, the punch 32 is retracted, the workpiece 7 is left in the die cavity 22, and the workpiece falls into the blanking slideway 13 along with the rotation of the lower die 2 and is air-cooled.

Preferably, the punch 32 retracts to draw the workpiece 7 and the inner wall of the die cavity 22 to move relatively, and then the demolding stop sleeve 33 is pressed down to retain the workpiece 7 in the die cavity 22, so that demolding of the workpiece 7 can be further facilitated.

In the process that the workpiece 7 is heated by the second inductance component and then air-cooled, distortion caused by deformation of the workpiece 7 can be used as a recrystallization driving force, so that the workpiece 7 is recrystallized, and residual internal stress generated by stamping is recycled and eliminated while normalizing modulation is performed, so that the dimensional accuracy and the service life of the workpiece 7 are improved.

In summary, the stamping device of the present embodiment has better filling capability on one hand, and can fill the corners of the lower die 2 in a single stroke, and on the other hand, the processing mode of heating first and then stamping breaks through the limitation of the stamping stretch ratio in the related art, because the microscopic lattice change of the blank in the deformation process tends to be hot forging rather than cold drawing, the probability of the workpiece 7 being pulled apart is greatly reduced, and even the spherical blank can be directly stamped into the workpiece 7 in one stamping.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims (10)

1. The continuous stamping mechanism is characterized by comprising a frame (1), an upper die (3) and a lower die (2);

The lower die (2) comprises a cylindrical lower die body (21) and a plurality of die grooves (22) formed along the circumferential surface of the die body, and the lower die body (21) is rotationally connected with the frame (1);

the upper die (3) comprises an upper die body (31) fixedly connected with the frame (1) and a punch (32) matched with the die cavity (22), and the punch (32) is movably connected with the upper die body (31) through a driving piece;

the frame (1) comprises a frame body (11) and a feeding slide way (12) and a discharging slide way (13) which are fixedly arranged on the frame body (11), the height of the feeding slide way (12) is decreased progressively along with being close to the lower die (2), and the height of the discharging slide way (13) is decreased progressively along with being far away from the lower die (2).

2. Continuous stamping mechanism according to claim 1, characterized in that the feed slide (12) narrows at one end near the lower die (2) to guide the blank to be processed to the die cavity (22), the inner wall of the die cavity (22) being part of a body of revolution.

3. The continuous stamping mechanism according to claim 2, further comprising a first inductance assembly comprising a first inductance wire (51) arranged in a circumferential plane of the punch (32) for generating an induction field in a surrounding space of the punch (32).

4. A continuous stamping mechanism according to claim 3, characterized in that the upper die (3) further comprises a demoulding stop sleeve (33) sleeved outside the punch (32) and fixedly connected with the upper die body (31), the punch (32) is in sliding fit with the demoulding stop sleeve (33), and the distance between the outer wall of the punch (32) and the inner wall of the demoulding stop sleeve (33) is smaller than the wall thickness of a machined workpiece (7).

5. Continuous stamping mechanism according to claim 4, characterized in that the inner wall of the stripper sleeve (33) and the inner wall of the die cavity (22) are provided with an insulating layer.

6. The continuous stamping mechanism according to claim 1, further comprising a second inductance assembly comprising a second resistance wire arranged at one end of the feed slide (12) near the lower die (2) for generating an induction field in the upper space of the feed slide (12).

7. Continuous stamping mechanism according to claim 1, characterized in that it further comprises a transfer auxiliary assembly (4), the transfer auxiliary assembly (4) comprising a baffle (41), the baffle (41) being arranged between the loading chute (12) and the upper die (3) and covering a part of the surface of the lower die body (21).

8. Continuous stamping mechanism according to claim 7, characterized in that the transfer aid assembly (4) further comprises fins (42), the fins (42) and the baffle (41) being hollow and mutually conductive, the conductive containing cavity being filled with a phase-change cooling liquid.

9. Continuous stamping mechanism according to claim 8, characterized in that the frame (1) further comprises a monolith strip (14), the monolith strips (14) being equally spaced on the upper surface of the feed slide (12) and parallel to the rotation axis of the lower die body (21).

10. Continuous stamping mechanism according to claim 1, characterized in that the lower die (2) further comprises a stripper (23) arranged at the bottom of each die cavity (22), the stripper (23) comprising a top plate (231) matching the shape of the bottom of the work piece (7) to be processed and a spring (232) arranged between the top plate (231) and the bottom of the die cavity (22), the elastic limit of the spring (232), the yield strength of the blank and the yield strength of the stripper (23) increasing in sequence.