A deep drawing die for automobile parts

By designing a car accessories drawing forming mold including a movable upper mold device and a lower mold device, multiple mold clamping and opening are achieved using an unlockable locking mechanism, and automatic flipping is achieved in conjunction with the material turning device, the existing molds are solved, and the problems of inconvenient operation, low efficiency and high cost are achieved, and efficient and low-cost drawing forming is achieved.

CN118577689BActive Publication Date: 2025-03-18GUANGZHOU YOUDEJIA MOULD TECH CO LTD
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Patent Information

Application Number
CN202410581139.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-05-11
Publication Date
2025-03-18
Estimated Expiration
2044-05-11

AI Technical Summary

Technical Problem

The existing automotive parts deep drawing molds have problems such as inconvenient operation, low production efficiency and high production costs. Especially for parts with relatively large depth drawing, they cannot be stamped and drawn in one go, and multiple stamping processes and multiple sets of molds are required.

Method used

A deep-drawing mold of automobile accessories including a base, a feeding device, a linkage plate, an upper mold device and a lower mold device are designed. The upper mold device and the lower mold device are arranged in a movable structure, including a second mould and a second concave die that can be unlocked, respectively, and the mold is closed and opened by a locking mechanism, and the sheet is automatically flipped with the material turning device.

Benefits of technology

It realizes stamping and drawing deep-out accessories products in the same set of molds, without the need for multiple sets of molds and multiple processes, improves the efficiency of drawing and forming, reduces production costs, and makes the depth-drawing operation more convenient.

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Abstract

The invention discloses a deep drawing forming die for automobile parts, comprising a base, with turning devices and linkage plates on both sides of the base, and an upper die device and a lower die device being lifted and lowered in the base; the two ends of the upper die device are respectively hinged to one end of the corresponding linkage plate, and the two ends of the lower die device are respectively hinged to the other end of the corresponding linkage plate; the upper die device comprises a first punch and a second punch movably arranged in the first punch, and a first locking mechanism for unlockably locking the second punch is arranged between the first punch and the second punch; the lower die device comprises a first die and a second die movably arranged in the first die, and a second locking mechanism for unlockably locking the second die is arranged between the first die and the second die; thereby, the accessory product can be stamped and drawn in the same set of dies, without the need for multiple sets of dies and multiple processes to cooperate, thereby improving the deep drawing forming efficiency, reducing the production cost, and facilitating the deep drawing operation.
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Description

Technical Field

[0001] The invention relates to the technical field of molds, in particular to a deep drawing mold for automobile parts. Background Art

[0002] Due to the variable-section deep-cavity parts in automotive accessories, the drawing ratio of stamping production is large, the shape is relatively complex, and the production is difficult; the existing drawing die cavities are mostly fixed structures, and parts with relatively large drawing depths cannot be stamped and drawn in one time. Multiple stamping processes and multiple sets of drawing dies are required to complete the deep drawing of the parts.

[0003] As a result, the existing drawing dies have problems such as inconvenient operation, low production efficiency and high production cost. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned shortcomings and provide a deep drawing mold for automobile accessories, so that the accessory products can be stamped and drawn in the same set of molds, without the need for multiple sets of molds and multiple processes, thereby improving the deep drawing efficiency, reducing production costs, and facilitating the deep drawing operation.

[0005] To achieve the above object, the specific scheme of the present invention is as follows:

[0006] A deep drawing die for automobile parts, comprising a base, with turning devices and linkage plates on both sides of the base, and an upper die device and a lower die device arranged in the base for lifting and lowering; the two ends of the upper die device are respectively hinged to one end of the corresponding linkage plate, and the two ends of the lower die device are respectively hinged to the other end of the corresponding linkage plate;

[0007] The upper die device comprises a first punch and a second punch movably arranged in the first punch, and a first locking mechanism for unlockably locking the second punch is arranged between the first punch and the second punch;

[0008] The lower die device comprises a first die and a second die movably arranged in the first die, and a second locking mechanism for unlockably locking the second die is arranged between the first die and the second die.

[0009] Optionally, the upper mold device further comprises an upper mold plate, the first punch is fixedly arranged on the upper mold plate, the first punch is provided with an accommodating cavity, a first spring is arranged in the accommodating cavity, and the second punch is arranged in the accommodating cavity and abuts against the first spring;

[0010] The first locking mechanism comprises a first locking hole provided in the first punch and a first plug rod cylinder provided in the second punch. When the plug rod of the first plug rod cylinder extends into the first locking hole, the second punch keeps protruding out of the accommodating cavity.

[0011] Optionally, the lower die device further comprises a lower die plate, the first die is fixedly arranged on the lower die plate, a second spring is arranged in the first die, and the second die abuts against the second spring;

[0012] The second locking mechanism comprises a second locking hole arranged in the first die and a second plug rod cylinder arranged in the second die. When the plug rod of the second plug rod cylinder extends into the second locking hole, the second die remains extended to be flush with the first die.

[0013] Optionally, guide sleeves are provided at the four corner positions of the upper template, and guide rods are provided at the four corner positions of the lower template, and the upper ends of the guide rods movably penetrate the guide sleeves.

[0014] Optionally, the upper die device also includes a pressing mechanism for pressing the sheet material to be drawn.

[0015] Optionally, the pressing mechanism includes a pressing ring, and guide columns are arranged at the four corner positions of the pressing ring. The upper ends of the guide columns movably pass through the upper template. The outer wall of each guide column is sleeved with a third spring, and the two ends of the third spring are respectively abutted against the pressing ring and the upper template.

[0016] Optionally, the material turning device includes a rotating sleeve with a T-shaped structure, the longitudinal arm of the rotating sleeve is rotatably arranged on the side wall of the base, the rotating sleeve is coaxially arranged with the linkage plate, the longitudinal arm of the rotating sleeve is sleeved with a one-way ratchet structure, the longitudinal arm of the rotating sleeve is also provided with a bearing platform, and a permanent magnet is arranged on the bearing platform;

[0017] The upper mold device also includes two racks arranged on both sides of the first punch. When the upper mold device moves up and down, the racks can drive the corresponding one-way ratchet structure to rotate.

[0018] Optionally, the material turning device also includes an oriented ring with an elliptical structure, an oriented rod is movably inserted into the cross arm of the rotating sleeve, a fourth spring is provided in the cross arm of the rotating sleeve, and the outer end of the oriented rod is movably abutted against the inner wall of the oriented ring under the elastic force of the fourth spring.

[0019] Optionally, a bayonet is convexly provided on the peripheral wall of the directional rod, and a strip hole is provided on the horizontal arm of the rotating sleeve, and the bayonet is movably embedded in the strip hole.

[0020] Optionally, the bearing platform has a profile shaft, the longitudinal arm of the rotating sleeve is provided with a profile hole, and the profile shaft is slidably inserted into the profile hole.

[0021] The beneficial effects of the present invention are as follows: the present invention arranges the lower die device and the upper die device as movable structures, the second die and the second punch are movably arranged inside the lower die device and the upper die device respectively, a first locking mechanism that can unlockably lock the second punch is arranged between the first punch and the second punch, a second locking mechanism that can unlockably lock the second die is arranged between the first die and the second die, and a turning device for turning the sheet material is arranged on the base; thereby, accessory products can be stamped and drawn in the same set of dies, without the need for multiple sets of dies and multiple processes, thereby improving the drawing efficiency, reducing the production cost, and facilitating the drawing operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a cross-sectional schematic diagram of the present invention;

[0023] Figure 2 It is a cross-sectional schematic diagram of the upper die device and the lower die device of the present invention during the first deep drawing forming;

[0024] Figure 3 It is a cross-sectional schematic diagram of the upper die device and the lower die device of the present invention during the second deep drawing forming;

[0025] Figure 4 It is a structural schematic diagram of the material turning device and the linkage plate of the present invention installed on the base;

[0026] Figure 5 It is a cross-sectional schematic diagram of the upper mold device of the present invention;

[0027] Figure 6 It is a cross-sectional schematic diagram of the lower mold device of the present invention;

[0028] Figure 7 It is a schematic structural diagram of the turning device of the present invention;

[0029] Figure 8 is a schematic structural diagram of the flip device of the present invention from another viewing angle;

[0030] Explanation of the accompanying drawings: 1. base; 21. rotating sleeve; 211. strip hole; 22. one-way ratchet structure; 23. bearing platform; 231. profile axis; 24. permanent magnet; 25. orientation ring; 26. orientation rod; 261. bayonet; 27. fourth spring; 3. linkage plate; 41. first punch; 42. second punch; 431. first locking hole; 432. first plug rod cylinder; 44. upper template; 441. guide sleeve; 45. first spring; 461. press ring; 4611. guide column; 462. third spring; 47. rack; 48. first connecting rod; 51. first die; 52. second die; 531. second locking hole; 532. second plug rod cylinder; 54. lower template; 541. guide rod; 55. second spring; 56. second connecting rod. DETAILED DESCRIPTION

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the implementation scope of the present invention is not limited thereto.

[0032] like Figures 1 to 8 As shown, a deep drawing die for automobile parts described in this embodiment includes a base 1, a material turning device and a linkage plate 3 are provided on both sides of the base 1, and an upper die device and a lower die device are provided in the base 1 for lifting and lowering; the two ends of the upper die device are respectively hinged to one end of the corresponding linkage plate 3, and the two ends of the lower die device are respectively hinged to the other end of the corresponding linkage plate 3;

[0033] The upper mold device includes a first punch 41 and a second punch 42 movably arranged in the first punch 41, the first punch 41 is provided with a first molding surface, and the second punch 42 is provided with a second molding surface; a first locking mechanism for unlockably locking the second punch 42 is arranged between the first punch 41 and the second punch 42; the lower mold device includes a first die 51 and a second die 52 movably arranged in the first die 51, the first die 51 is provided with a first molding cavity, and the second die 52 is provided with a second molding cavity; a second locking mechanism for unlockably locking the second die 52 is arranged between the first die 51 and the second die 52.

[0034] Specifically, in the actual application of the automotive parts drawing and forming die described in this embodiment, the upper die device is fixed on the slide of the external press, the base 1 is fixed on the workbench of the external press, and the upper die device and the lower die device realize synchronous reverse movement through the linkage plate 3; the slide of the external press is provided with a first drawing stroke and a second drawing stroke, and the first drawing stroke is smaller than the second drawing stroke, and the slide of the external press needs to realize the first drawing stroke and the second drawing stroke in sequence to complete the drawing and forming of a sheet material;

[0035] During stamping and drawing, the slide of the external press performs the first drawing stroke movement, and the two ends of the sheet to be drawn are respectively fixed on the turning devices on both sides of the base 1, the first locking mechanism locks the second punch 42, and the second locking mechanism locks the second die 52. The slide of the external press drives the lower die device to move downward, and the lower die device moves upward synchronously through the linkage of the linkage plate 3, so that the lower die device and the upper die device are molded for the first time, and the second molding surface of the second punch 42 presses the sheet to be drawn into the second cavity, and the sheet is drawn for the first time. Figure 2 As shown, the slide table of the external press drives the lower die device and the upper die device to open the mold, and the turning device drives the sheet metal to turn 180 degrees after the first deep drawing.

[0036] When the first deep drawing is completed, the first locking mechanism releases the lock on the second punch 42, and the second locking mechanism releases the lock on the second die 52. The slide of the external press performs the second drawing stroke movement, so that the mold device and the lower mold device are molded, and the displacement of the relative movement of the upper mold device and the lower mold device increases, that is, the drawing depth increases, and the second die 52 is squeezed and retracted by the sheet material. The first punch 41 and the second punch 42 produce relative movement, so that the first molding surface of the first punch 41 presses the sheet material into the first cavity, and the second die 52 is squeezed and retracted relative to the first die 51, thereby performing the second deep drawing on the sheet material. Figure 3 As shown, until the second die 52 moves down to the lowest position, the first molding surface and the first molding cavity are matched to form a complete molding cavity, so that the sheet material is punched and drawn into an accessory product;

[0037] After completion, the slide of the external press drives the lower die device and the upper die device to open the mold, and the flipping device drives the accessory product after the second deep drawing to flip 180 degrees, and then the accessory product is removed from the flipping device.

[0038] In this embodiment, the lower die device and the upper die device are set as movable structures, and the second die 52 and the second punch 42 are movably arranged inside the lower die device and the upper die device, respectively, a first locking mechanism for unlockably locking the second punch 42 is arranged between the first punch 41 and the second punch 42, a second locking mechanism for unlockably locking the second die 52 is arranged between the first die 51 and the second die 52, and a turning device for turning the sheet material is arranged on the base 1;

[0039] Therefore, by adjusting the working stroke of the slide of the external press, the locking mechanism is used to lock the second punch 42 and the second die 52 during the first mold closing, and the sheet to be drawn is subjected to the first deep drawing forming; then the locking mechanism releases the lock on the second punch 42 and the second die 52, and the working stroke of the slide of the external press is increased to perform the second mold closing, so that the second punch 42 and the first punch 41, and the first die 51 and the second die 52 respectively move relative to each other under extrusion, and the sheet after the first deep drawing forming is subjected to the second deep drawing forming, thereby stamping and drawing the accessory products in the same set of molds, without the need for multiple sets of molds and multiple processes, thereby improving the deep drawing forming efficiency, reducing the production cost, and facilitating the deep drawing operation.

[0040] like Figures 1 to 3 , Figure 5As shown, in the present embodiment, a deep drawing mold for automobile parts is described. In some embodiments, the upper mold device also includes an upper mold plate 44, a first punch 41 is fixedly arranged on the upper mold plate 44, the first punch 41 is provided with an accommodating cavity, a first spring 45 is arranged in the accommodating cavity, and the second punch 42 is arranged in the accommodating cavity and abuts against the first spring 45; the first locking mechanism includes a first locking hole 431 arranged on the first punch 41 and a first plug rod cylinder 432 arranged on the second punch 42, when the plug rod of the first plug rod cylinder 432 extends into the first locking hole 431, the second punch 42 keeps protruding out of the accommodating cavity.

[0041] Specifically, both ends of the upper template 44 are hinged to one end of the linkage plate 3 through the first connecting rod 48, as shown in FIG. Figure 2 As shown, during the first deep drawing, the first spring 45 makes the second punch 42 protrude out of the cavity, and at the same time, the plug rod of the first plug rod cylinder 432 extends into the first locking hole 431 to lock the second punch 42, so that a rigid connection is formed between the first punch 41 and the second punch 42, so that when moving downward, the second molding surface of the second punch 42 can first contact the sheet material to be drawn, so as to perform the first deep drawing on the sheet material to be drawn;

[0042] like Figure 3 As shown, during the second deep drawing, the plug rod of the first plug rod cylinder 432 moves out from the first locking hole 431, thereby releasing the lock on the second punch 42. After the second punch 42 contacts the sheet, the second punch 42 retracts inward into the accommodating cavity, and the first spring 45 is compressed until the first molding surface of the first punch 41 presses the sheet into the first molding cavity, thereby performing the second deep drawing on the sheet to be drawn.

[0043] like Figures 1 to 3 , Figure 6 As shown, in the present embodiment, a deep drawing die for automobile parts, in some embodiments, the lower die device further comprises a lower die plate 54, the first die 51 is fixedly arranged on the lower die plate 54, a second spring 55 is arranged inside the first die 51, and the second die 52 abuts against the second spring 55;

[0044] The second locking mechanism includes a second locking hole 531 provided in the first die 51 and a second plug rod cylinder 532 provided in the second die 52. When the plug rod of the second plug rod cylinder 532 extends into the second locking hole 531, the second die 52 remains extended to be flush with the first die 51.

[0045] Specifically, the two ends of the lower mold plate 54 are respectively hinged to the linkage plate 3 through the second connecting rod 56, as shown in Figure 2. During the first deep drawing, the second spring 55 extends the second die 52, so that the second die 52 extends to the opening position of the first cavity to be flush with the first die 51. The plug rod of the second plug rod cylinder 532 extends into the second locking hole 531 to lock the second die 52, so that a rigid connection is formed between the first die 51 and the second die 52. Therefore, when the upper mold device and the lower mold device are molded together, the second mold surface of the second punch 42 cooperates with the second cavity of the second die 52 to perform the first deep drawing of the sheet material to be drawn.

[0046] like Figure 3 As shown, during the second deep drawing, the plug rod of the second plug rod cylinder 532 moves out from the second locking hole 531, thereby releasing the lock on the second die 52. When the first molding surface of the first punch 41 presses the sheet to be drawn into the first cavity, the second die 52 is squeezed, the second spring 55 is compressed, and the second die 52 moves relative to the first die 51, thereby performing the second deep drawing on the sheet to be drawn.

[0047] In the deep drawing die of an automobile part described in this embodiment, in some embodiments, guide sleeves 441 are provided at the four corners of the upper die plate 44, and guide rods 541 are provided at the four corners of the lower die plate 54, and the upper ends of the guide rods 541 movably penetrate the guide sleeves 441. In this embodiment, the guide sleeves 441 cooperate with the guide rods 541 to provide guide limits for the upper die device and the lower die device, so that the upper die device and the lower die device can reliably and stably perform mold closing and mold opening actions to ensure the accuracy of deep drawing.

[0048] like Figures 1 to 3 , Figure 5 As shown, in the deep drawing die of an automobile part described in this embodiment, in some embodiments, the upper die device further includes a material pressing mechanism for pressing the sheet material to be drawn. In this embodiment, by providing the material pressing mechanism, when the upper die device and the lower die device are closed, the material pressing mechanism is used to press the sheet material to be drawn, so as to ensure reliable deep drawing of the sheet material to be drawn.

[0049] The present embodiment describes a deep drawing die for automobile parts, specifically, a pressing mechanism includes a pressing ring 461, and guide columns 4611 are provided at the four corner positions of the pressing ring 461. The upper ends of the guide columns 4611 movably penetrate the upper template 44, and the outer wall of each guide column 4611 is sleeved with a third spring 462, and the two ends of the third spring 462 are respectively abutted against the pressing ring 461 and the upper template 44.

[0050] Specifically, when the upper mold device and the lower mold device are closed, the pressure ring 461 contacts the sheet to be drawn, and under the elastic force of the third spring 462, a clamping force is applied to the sheet to be drawn, so that the second punch 42 and the second die 52 are closed for the first drawing and the first punch 41 and the first die 51 are closed for the second drawing.

[0051] like Figure 1 , Figure 4 , Figure 7 and Figure 8 As shown, the present embodiment describes a deep drawing mold for automobile parts. In some embodiments, the turning device includes a rotating sleeve 21 with a T-shaped structure, and the longitudinal arm of the rotating sleeve 21 is rotatably arranged on the side wall of the base 1. The rotating sleeve 21 is coaxially arranged with the linkage plate 3. The longitudinal arm of the rotating sleeve 21 is sleeved with a one-way ratchet structure 22. The longitudinal arm of the rotating sleeve 21 is also provided with a bearing platform 23, and a permanent magnet 24 is arranged on the bearing platform 23; the upper mold device also includes two racks 47 arranged on both sides of the first punch 41. When the upper mold device moves up and down, the racks 47 can drive the corresponding one-way ratchet structure 22 to rotate.

[0052] Specifically, the one-way ratchet structure 22 adopts the existing one-way ratchet mechanism, and two racks 47 are fixed at the two ends of the upper mold plate 44. The two ends of the sheet to be drawn are fixed on the supporting platforms 23 of the flipping device on both sides. The permanent magnet 24 on the supporting platform 23 magnetically fixes the sheet to be drawn. When the upper mold device and the lower mold device are closed, the upper mold device moves downward, and the rack 47 drives the one-way ratchet structure 22 to idle, that is, the one-way ratchet structure 22 will not drive the rotating sleeve 21 to rotate. When the upper mold device and the lower mold device are opened, the upper mold device moves upward, and the rack 47 drives the one-way ratchet structure 22 to drive the rotating sleeve 21 to rotate, and the rotating sleeve 21 drives the supporting platform 23 to rotate, and the supporting platform 23 drives the sheet to flip 180 degrees, thereby realizing automatic flipping of the sheet.

[0053] Preferably, if Figure 4 As shown, the supporting platforms 23 on both sides are centrally symmetrically arranged, that is, when the permanent magnet 24 on one side faces downward, the permanent magnet 24 on the other side faces upward, so that the magnetic attraction force on one side is upward and the other side provides supporting force, thereby providing reliable support for the sheet to be drawn.

[0054] like Figure 7 and Figure 8 As shown, in the present embodiment, a deep drawing mold for automobile parts is described. In some embodiments, the turning device also includes an oriented ring 25 with an elliptical structure, and an oriented rod 26 is movably provided in the cross arm of the rotating sleeve 21. A fourth spring 27 is provided in the cross arm of the rotating sleeve 21, and the outer end of the oriented rod 26 is movably abutted against the inner wall of the oriented ring 25 under the elastic force of the fourth spring 27.

[0055] Specifically, when the upper mold device and the lower mold device are opening, the rack 47 drives the one-way ratchet structure 22 to drive the rotating sleeve 21 to rotate, and the rotating sleeve 21 drives the directional rod 26 to rotate. During the rotation, the directional rod 26 compresses the fourth spring 27. Since the directional ring 25 is an elliptical structure, the directional rod 26 always maintains a trend toward the long axis direction of the directional ring 25 under the elastic force of the fourth spring 27. In this way, the sheet material can be automatically leveled to ensure that the sheet material to be drawn remains in a horizontal state, avoiding deviations during the drawing process and causing defects in the accessory product.

[0056] like Figure 7 and Figure 8 As shown, in the embodiment of the deep drawing die for automobile parts, in some embodiments, the peripheral wall of the directional rod 26 is provided with a bayonet 261, and the horizontal arm of the rotating sleeve 21 is provided with a strip hole 211, and the bayonet 261 is movably embedded in the strip hole 211. In this embodiment, by providing the bayonet 261 to cooperate with the strip hole 211, relative rotation between the directional rod 26 and the rotating sleeve 21 can be prevented, thereby ensuring the automatic leveling effect of the flip device.

[0057] like Figure 1 and Figure 7 As shown, in the deep drawing die of an automobile part described in this embodiment, in some embodiments, the bearing platform 23 has a profile shaft 231, and the longitudinal arm of the rotating sleeve 21 is provided with a profile hole, and the profile shaft 231 is slidably inserted into the profile hole. In this embodiment, by setting the profile shaft 231 to cooperate with the profile hole, the bearing platform 23 can rotate with the rotating sleeve 21 and can also slide relative to the rotating sleeve 21, thereby adjusting the distance between the two bearing platforms 23 to adapt to the deep drawing of sheets of different lengths, and the structure has a wider range of application.

[0058] The above is only a preferred embodiment of the present invention. Therefore, any equivalent changes or modifications made according to the structure, characteristics and principles described in the scope of the patent application of the present invention are included in the protection scope of the patent application of the present invention.

Claims

1. A deep drawing die for automobile parts, characterized in that: It includes a base, and both sides of the base are provided with a material turning device and a linkage plate. An upper mold device and a lower mold device are provided in the base for lifting and lowering; the two ends of the upper mold device are respectively hinged to one end of the corresponding linkage plate, and the two ends of the lower mold device are respectively hinged to the other end of the corresponding linkage plate; The upper die device comprises a first punch and a second punch movably arranged in the first punch, and a first locking mechanism for unlockably locking the second punch is arranged between the first punch and the second punch; The lower die device comprises a first die and a second die movably arranged in the first die, and a second locking mechanism for unlockably locking the second die is arranged between the first die and the second die; The material turning device comprises a rotating sleeve with a T-shaped structure, the longitudinal arm of the rotating sleeve is rotatably arranged on the side wall of the base, the rotating sleeve is coaxially arranged with the linkage plate, the longitudinal arm of the rotating sleeve is sleeved with a one-way ratchet structure, the longitudinal arm of the rotating sleeve is also provided with a bearing platform, and a permanent magnet is arranged on the bearing platform; The upper mold device also includes two racks arranged on both sides of the first punch. When the upper mold device moves up and down, the racks can drive the corresponding one-way ratchet structure to rotate.

2. The deep drawing die for automobile parts according to claim 1, characterized in that: The upper mold device also includes an upper mold plate, a first punch is fixedly arranged on the upper mold plate, the first punch is provided with an accommodating cavity, a first spring is arranged in the accommodating cavity, and a second punch is arranged in the accommodating cavity and abuts against the first spring; The first locking mechanism comprises a first locking hole provided in the first punch and a first plug rod cylinder provided in the second punch. When the plug rod of the first plug rod cylinder extends into the first locking hole, the second punch keeps protruding out of the accommodating cavity.

3. The deep drawing die for automobile parts according to claim 2, characterized in that: The lower die device also includes a lower die plate, the first die is fixedly arranged on the lower die plate, a second spring is arranged in the first die, and the second die abuts against the second spring; The second locking mechanism comprises a second locking hole arranged in the first die and a second plug rod cylinder arranged in the second die. When the plug rod of the second plug rod cylinder extends into the second locking hole, the second die remains extended to be flush with the first die.

4. The deep drawing die for automobile parts according to claim 3, characterized in that: The four corner positions of the upper template are provided with guide sleeves, the four corner positions of the lower template are provided with guide rods, and the upper ends of the guide rods movably penetrate the guide sleeves.

5. The deep drawing die for automobile parts according to claim 2, characterized in that: The upper die device also includes a pressing mechanism for pressing the sheet material to be drawn.

6. The deep drawing die for automobile parts according to claim 5, characterized in that: The pressing mechanism includes a pressing ring, and guide columns are arranged at the four corner positions of the pressing ring. The upper ends of the guide columns movably penetrate the upper template. The outer wall of each guide column is sleeved with a third spring, and the two ends of the third spring are respectively in contact with the pressing ring and the upper template.

7. The automotive parts drawing die according to claim 1, characterized in that: The material turning device also includes an elliptical directional ring, a directional rod is movably inserted in the horizontal arm of the rotating sleeve, a fourth spring is arranged in the horizontal arm of the rotating sleeve, and the outer end of the directional rod is movably abutted against the inner wall of the directional ring under the elastic force of the fourth spring.

8. The deep drawing die for automobile parts according to claim 7, characterized in that: A bayonet is convexly arranged on the peripheral wall of the directional rod, a strip hole is arranged on the horizontal arm of the rotating sleeve, and the bayonet is movably embedded in the strip hole.

9. The deep drawing die for automobile parts according to claim 1, characterized in that: The bearing platform is provided with a profile shaft, the longitudinal arm of the rotating sleeve is provided with a profile hole, and the profile shaft is slidably inserted into the profile hole.

Citation Information

Patent Citations

  • Metal sheet multi-concave-convex curved surface in-die sequential pulsating drawing forming die and method

    CN111531037A