Automobile sheet metal stamping die

Abstract

The present invention relates to the field of stamping dies, and specifically to an automobile sheet metal stamping die, comprising a processing table, an air pump telescopic rod, a male die and a female die, wherein the air pump telescopic rod is symmetrically fixedly installed on the upper surface of the inner wall of the processing table, the male die is fixedly installed between the telescopic ends of the two air pump telescopic rods, and the female die is fixedly installed on the upper surface of the bottom inner wall of the processing table. The outer side of the female die is provided with a plurality of groups of transmission mechanisms arranged in a circular array, each group of the transmission mechanisms is provided with a resistance mechanism, and the transmission mechanisms are provided with a limiting mechanism. The resistance mechanism is driven by the transmission mechanism to resist and fix heat dissipation holes of different sizes at the same time, thereby avoiding the situation in which the traditional method requires the disassembly and assembly of replacement positioning blocks of different sizes, avoiding the need to consume a lot of time when replacing the positioning blocks, and improving the work efficiency of hub cover stamping and punching.

Description

Technical Field

[0001] The present invention relates to the field of stamping dies, and in particular to an automobile sheet metal stamping die. Background Art

[0002] Automotive sheet metal stamping dies are tools used to manufacture automotive sheet metal parts. They are key equipment in the stamping process, and can be used to transform metal sheets into the desired part shape. Stamping processes include bending, drawing, flanging, and punching.

[0003] Among them, the wheel hub cover is a kind of automobile sheet metal part. The wheel hub cover is made of a metal disc through multiple stamping processes. First, a plurality of heat dissipation holes of special shapes are punched out on the surface of the metal disc, and then a plurality of mounting holes are punched out in the middle of the metal disc with multiple heat dissipation holes.

[0004] During the process of punching the mounting holes, a metal disc with heat dissipation holes will be placed on the lower die. The lower die is mainly composed of a frustum in the middle and positioning blocks on both sides that are adapted to the shape of the heat dissipation holes. Two of the heat dissipation holes of the metal disc are respectively mounted on the outside of the two positioning blocks. The middle part of the lower end of the metal disc will contact the frustum, and then the upper die is driven downward by the existing lifting device. The bottom of the upper die has multiple stamping columns that are adapted to the hole grooves on the surface of the frustum of the lower die. The stamping columns can be inserted into the hole grooves to complete the stamping of the mounting holes.

[0005] However, the metal disc is relatively thin. When it is under pressure, it only relies on two positioning blocks to limit the metal disc with multiple heat dissipation holes. The force is not evenly dispersed, and the metal disc is prone to slight deformation, affecting the quality. At the same time, when stamping hub covers of different sizes, the heat dissipation holes on their surfaces are also of different sizes, and the fixed-size positioning blocks cannot change their shape to adapt to the corresponding size of the heat dissipation holes. It is often necessary to disassemble and replace the corresponding positioning blocks, which is a cumbersome operation. To this end, we propose an automotive sheet metal stamping die. Summary of the invention

[0006] The purpose of the present invention is to provide an automobile sheet metal stamping die to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: An automobile sheet metal stamping die, comprising a processing table, an air pump telescopic rod, a male die and a female die, the air pump telescopic rod being symmetrically fixedly installed on the upper surface of the inner wall of the processing table, the male die being fixedly installed between the two telescopic ends of the air pump telescopic rod, the female die being fixedly installed on the upper surface of the bottom inner wall of the processing table, a plurality of transmission mechanisms being arranged in a circular array on the outer side of the female die, a resistance mechanism being arranged inside each transmission mechanism, a limiting mechanism being arranged inside the transmission mechanism, a plurality of limiting grooves being arranged in a circular array on the bottom inner wall of the processing table, and a hub cover being attached to the upper surface of the female die.

[0008] Preferably, the transmission mechanism includes a first fixed plate, which is fixedly connected to the bottom inner wall of the processing table, a first electric telescopic rod is fixedly installed on the side of the first fixed plate close to the concave mold, an end of the first electric telescopic rod away from the first fixed plate is fixedly connected to a T-shaped slide, and the bottom end of the T-shaped slide is slidably connected to the inside of a limiting slide groove, the top of the T-shaped slide is fixedly connected to a fourth fixed plate, the upper surface of the fourth fixed plate is fixedly connected to a first resistance plate, the upper surface of the fourth fixed plate is cross-symmetrically provided with rectangular slide grooves, and the upper surface of the fourth fixed plate is fixedly connected to a second resistance plate on the side away from the first resistance plate.

[0009] Preferably, the size of the top end of the T-shaped slide plate is matched with the size of the limiting slide groove.

[0010] Preferably, the resistance mechanism includes a bracket plate, the bracket plate is fixedly connected to the upper surface of the fourth fixed plate, the top of the bracket plate is fixedly installed with a motor, the lower surface of the motor is rotatably installed with a diagonal rod, and the bottom end of the diagonal rod is rotatably connected to the middle upper surface of the fourth fixed plate, the outer sliding sleeve of the diagonal rod is provided with a cylindrical groove plate, the inner part of the cylindrical groove plate is cross-symmetrically fixed with a sliding block, the outer wall of the cylindrical groove plate is symmetrically fixedly connected with a clamping block, the inner part of the clamping block is rotatably connected with a guide plate, the inner part of the rectangular slide groove is slidably connected with a first slide plate, the upper surface of the first slide plate is fixedly connected with a rectangular groove plate, the side of the rectangular groove plate close to the cylindrical groove plate is symmetrically fixedly connected with a second fixed plate, the top inner wall of the rectangular groove plate is rotatably connected with a first torsion spring rod, and the middle part of the first torsion spring rod is fixedly connected with a baffle.

[0011] Preferably, the size of the first slide plate is adapted to the size of the rectangular slide groove, the size of the slider is adapted to the size of the twill set on the twill rod, the guide plate is rotatably connected to the second fixed plate, and the lower surface of the hub cover and the upper surface of the second contact plate are in the same horizontal plane.

[0012] Preferably, the limiting mechanism includes a ratchet, which is fixedly connected to the top outer wall of the first torsion spring rod, a second electric telescopic rod is fixedly installed on the upper surface of the rectangular groove plate, a third fixed plate is fixedly connected to the side of the second electric telescopic rod close to the ratchet, the upper surface of the third fixed plate is rotatably connected to the second torsion spring rod, and a block plate is fixedly connected to the top end of the second torsion spring rod.

[0013] Preferably, the size of the block plate close to the ratchet is matched with the size between two ratchet teeth arranged on the outer wall of the ratchet.

[0014] Preferably, a side of the block plate close to the ratchet is provided with an arc surface, and the arc surface abuts against an outer wall of the ratchet teeth of the ratchet.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The transmission mechanism drives the interference mechanism to simultaneously interfere and fix the heat dissipation holes of different sizes, avoiding the need to disassemble and replace positioning blocks of different sizes in the traditional way, avoiding the need to consume a lot of time when replacing the positioning blocks, and improving the work efficiency of hub cover stamping and punching.

[0017] The baffle is driven by the first torsion spring rod to fit and contact the inner wall of the heat dissipation hole, thereby preventing the traditional positioning block from being unable to automatically adjust according to the size of the heat dissipation hole and contacting therewith, and preventing the positioning block from slightly deforming after contacting the heat dissipation hole, thereby improving the product quality of the wheel hub cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the position relationship between the processing table and the hub cover of the present invention;

[0020] Figure 3 It is a schematic diagram of the position relationship between the fourth fixing plate and the first electric telescopic rod of the present invention;

[0021] Figure 4 It is a schematic diagram of the positional relationship between the T-shaped slide plate and the columnar slot plate of the present invention;

[0022] Figure 5 It is a schematic diagram of the position relationship between the clamping block and the rectangular groove plate of the present invention;

[0023] Figure 6 It is a schematic diagram of the position relationship between the slider and the cylindrical slot plate of the present invention;

[0024] Figure 7 It is a schematic diagram of the positional relationship between the rectangular groove plate and the second fixing plate of the present invention;

[0025] Figure 8 It is a schematic diagram of the position relationship between the ratchet and the baffle of the present invention;

[0026] Fig. 9 It is a schematic diagram of the position relationship between the second electric telescopic rod and the clamping plate of the present invention.

[0027] In the accompanying drawings, the list of components represented by each reference numeral is as follows: 1. Processing table; 2. Air pump telescopic rod; 3. Male mold; 4. Female mold; 5. First contact plate; 6. First fixed plate; 7. First electric telescopic rod; 8. Limiting slide groove; 9. T-shaped slide plate; 10. Fourth fixed plate; 11. Rectangular slide groove; 12. Second contact plate; 13. Hub cover; 14. Bracket plate; 15. Motor; 16. Twill rod; 17. Columnar groove plate; 18. Slider; 19. Card block; 20. Guide plate; 21. Rectangular groove plate; 22. First slide plate; 23. First torsion spring rod; 24. Baffle; 25. Second fixed plate; 26. Ratchet; 27. Second electric telescopic rod; 28. Third fixed plate; 29. ​​Second torsion spring rod; 30. Card block plate. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Example 1: Please refer to Figure 1 - Fig. 9 In the figure, an automobile sheet metal stamping die comprises a processing table 1, an air pump telescopic rod 2, a male die 3 and a female die 4. The air pump telescopic rod 2 is symmetrically fixedly installed on the upper surface of the inner wall of the processing table 1, the male die 3 is fixedly installed between the telescopic ends of the two air pump telescopic rods 2, and the female die 4 is fixedly installed on the upper surface of the bottom inner wall of the processing table 1. A plurality of transmission mechanisms are arranged in a circular array on the outer side of the female die 4, and a resistance mechanism is arranged inside each transmission mechanism, and a limiting mechanism is arranged inside the transmission mechanism. A plurality of limiting slide grooves 8 are arranged in a circular array on the bottom inner wall of the processing table 1, and a hub cover 13 is attached to the upper surface of the female die 4.

[0030] The top size of the T-shaped slide plate 9 is matched with the size of the limiting slide groove 8 .

[0031] The transmission mechanism includes a first fixed plate 6, which is fixedly connected to the bottom inner wall of the processing table 1, and a first electric telescopic rod 7 is fixedly installed on the side of the first fixed plate 6 close to the concave mold 4, and an end of the first electric telescopic rod 7 away from the first fixed plate 6 is fixedly connected to a T-shaped slide 9, and the bottom end of the T-shaped slide 9 is slidably connected to the inside of the limiting slide groove 8, and the top of the T-shaped slide 9 is fixedly connected to a fourth fixed plate 10, and the upper surface of the fourth fixed plate 10 is fixedly connected to the first contact plate 5, and the upper surface of the fourth fixed plate 10 is cross-symmetrically provided with rectangular slide grooves 11, and the upper surface of the fourth fixed plate 10 is fixedly connected to the side away from the first contact plate 5 with a second contact plate 12.

[0032] The resistance mechanism includes a bracket plate 14, which is fixedly connected to the upper surface of the fourth fixed plate 10, a motor 15 is fixedly installed on the top of the bracket plate 14, a diagonal rod 16 is rotatably installed on the lower surface of the motor 15, and the bottom end of the diagonal rod 16 is rotatably connected to the middle upper surface of the fourth fixed plate 10, a cylindrical groove plate 17 is slidably sleeved on the outer side of the diagonal rod 16, a slider 18 is cross-symmetrically fixedly connected inside the cylindrical groove plate 17, a clamping block 19 is symmetrically fixedly connected on the outer wall of the cylindrical groove plate 17, a guide plate 20 is rotatably connected inside the clamping block 19, a first slide plate 22 is slidably connected inside the rectangular slide groove 11, a rectangular groove plate 21 is fixedly connected on the upper surface of the first slide plate 22, a second fixed plate 25 is symmetrically fixedly connected on one side of the rectangular groove plate 21 close to the cylindrical groove plate 17, a first torsion spring rod 23 is rotatably connected on the top inner wall of the rectangular groove plate 21, and a baffle 24 is fixedly connected to the middle part of the first torsion spring rod 23.

[0033] The size of the first slide plate 22 is adapted to the size of the rectangular slide groove 11, the size of the slider 18 is adapted to the size of the diagonal lines set on the diagonal line rod 16, the guide plate 20 is rotatably connected to the second fixed plate 25, and the lower surface of the hub cover 13 and the upper surface of the second contact plate 12 are in the same horizontal plane.

[0034] In this embodiment, at the beginning of the work, the operator places the hub cover 13 on the upper surface of the concave mold 4, and aligns the center of the hub cover 13 with the center position of the concave mold 4, and at the same time aligns the groove opened inside the hub cover 13 with the corresponding mechanism, and then the operator controls the first electric telescopic rod 7 to move toward the side close to the concave mold 4, so that the first electric telescopic rod 7 drives the T-shaped slide plate 9 to slide synchronously inside the limiting slide groove 8 toward the side close to the concave mold 4, so that the T-shaped slide plate 9 drives the first contact plate 5 and the second contact plate 12 to move synchronously toward the side close to the concave mold 4, when the first contact plate 5 moves away from the side of the fourth fixed plate 10 to contact the inner wall of the groove of the hub cover 13, the operator controls the twill rod 16 to start rotating through the motor 15, and the bottom end of the twill rod 16 rotates on the upper surface of the fourth fixed plate 10.

[0035] During the rotation of the diagonal rod 16, the fine grooves arranged on the outer side of the diagonal rod 16 resist the sliding block 18 to move toward the side close to the fourth fixed plate 10, so that the sliding block 18 drives the cylindrical groove plate 17 to move downward synchronously. During the movement of the cylindrical groove plate 17, the clamping block 19 is driven to move synchronously, so that the clamping block 19 drives the guide plate 20 rotatably connected thereto to move downward synchronously. At the same time, the guide plate 20 drives the second fixed plate 25 rotatably connected to its bottom end to move toward the side away from the diagonal rod 16, so that the second fixed plate 25 drives the first slide plate 22 to slide inside the rectangular groove 11 toward the outer side of the fourth fixed plate 10, and the first slide plate 22 drives the rectangular groove 11 to move downward. The groove plate 21 moves toward the side away from the diagonal rod 16. In the process of the rectangular groove plate 21 moving toward the side away from the diagonal rod 16, the rectangular groove plate 21 drives the baffle plate 24 to move synchronously through the first torsion spring rod 23 rotatably connected thereto. When the baffle plate 24 contacts the inner wall of the heat dissipation hole provided in the hub cover 13, the baffle plate 24 drives the baffle plate 24 to rotate with the first torsion spring rod 23 as the axis under the interference with the inner wall of the heat dissipation hole of the hub cover 13, until the wall surface of the baffle plate 24 away from the diagonal rod 16 completely conflicts with the inner wall of the heat dissipation hole of the hub cover 13, at which time the baffle plate 24 no longer rotates, and the wall surface of the baffle plate 24 away from the diagonal rod 16 completely fits with the inner wall of the heat dissipation hole of the hub cover 13. The transmission mechanism drives the interference mechanism to simultaneously interfere and fix the heat dissipation holes of different sizes, avoiding the situation that the traditional method needs to disassemble and replace the positioning blocks of different sizes, avoiding the need to consume a lot of time when replacing the positioning blocks, and improving the work efficiency of punching holes of the hub cover 13.

[0036] Example 2: Please refer to Figure 7 - Fig. 9 The present embodiment further explains the first embodiment. The limiting mechanism in the figure includes a ratchet 26, which is fixedly connected to the top outer wall of the first torsion spring rod 23. A second electric telescopic rod 27 is fixedly installed on the upper surface of the rectangular groove plate 21. A third fixed plate 28 is fixedly connected to the side of the second electric telescopic rod 27 close to the ratchet 26. The upper surface of the third fixed plate 28 is rotatably connected to the second torsion spring rod 29, and a block plate 30 is fixedly connected to the top of the second torsion spring rod 29.

[0037] The size of the block plate 30 close to the ratchet 26 matches the size between two ratchet teeth arranged on the outer wall of the ratchet 26 .

[0038] A side of the block plate 30 close to the ratchet 26 is provided with an arc surface, and the arc surface abuts against the outer wall of the ratchet teeth of the ratchet 26 .

[0039] In the present embodiment, during the process that the baffle plate 24 contacts the inner wall of the heat dissipation hole provided on the hub cover 13 and drives the first torsion spring rod 23 to rotate, the first torsion spring rod 23 drives the ratchet 26 to rotate synchronously, and the ratchet teeth provided on the ratchet 26 contact the block plate 30 close to the arc surface provided on the ratchet 26, so that the block plate 30 rotates around the second torsion spring rod 29 as the axis and drives the second torsion spring rod 29 to rotate synchronously, until the block plate 30 is separated from the arc surface provided on the ratchet 26, at this time, the block plate 30 contacts the outer wall of the second ratchet teeth on the ratchet 26 again under the action of the elastic force generated by the rotation of the second torsion spring rod 29, and at the same time, the block plate 3 0 One end close to the ratchet 26 and away from the arc surface thereof conflicts with the ratchet teeth, so that the ratchet 26 can only move in one direction. After the punching of the hub cover 13 is completed, after the operator takes out the hub cover 13, the operator controls the second electric telescopic rod 27 to retract to the side away from the ratchet 26, so that the second electric telescopic rod 27 drives the third fixing plate 28 and the second torsion spring rod 29 to move synchronously, so that the second torsion spring rod 29 drives the block plate 30 to disengage from the ratchet 26, and then the ratchet 26 rotates in the opposite direction under the elastic force generated by the rotation of the first torsion spring rod 23, so that the baffle 24 moves to the initial position, and the work is finished at this time.

[0040] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automobile sheet metal stamping die, comprising a processing table (1), an air pump telescopic rod (2), a male die (3) and a female die (4), wherein the air pump telescopic rod (2) is symmetrically fixedly mounted on the upper surface of the inner wall of the processing table (1), the male die (3) is fixedly mounted between the telescopic ends of the two air pump telescopic rods (2), and the female die (4) is fixedly mounted on the upper surface of the bottom of the inner wall of the processing table (1), characterized in that: The outer side of the female mold (4) is provided with a plurality of transmission mechanisms arranged in a circular array, each transmission mechanism is provided with a resistance mechanism inside, and each transmission mechanism is provided with a limiting mechanism inside. The bottom of the inner wall of the processing table (1) is provided with a plurality of limit sliding grooves (8) arranged in a circular array, and the upper surface of the female mold (4) is fitted with a hub cover (13); The transmission mechanism comprises a first fixed plate (6), the first fixed plate (6) being fixedly connected to the bottom inner wall of the processing table (1), a first electric telescopic rod (7) being fixedly installed on a side of the first fixed plate (6) close to the concave mold (4), a T-shaped slide plate (9) being fixedly connected to an end of the first electric telescopic rod (7) away from the first fixed plate (6), and the bottom end of the T-shaped slide plate (9) being slidably connected to the inside of a limiting slide groove (8), a fourth fixed plate (10) being fixedly connected to the top of the T-shaped slide plate (9), a first contact plate (5) being fixedly connected to the upper surface of the fourth fixed plate (10), a rectangular slide groove (11) being cross-symmetrically provided on the upper surface of the fourth fixed plate (10), and a second contact plate (12) being fixedly connected to the side of the upper surface of the fourth fixed plate (10) away from the first contact plate (5); The abutment mechanism comprises a support plate (14), the support plate (14) being fixedly connected to the upper surface of the fourth fixed plate (10), a motor (15) being fixedly mounted on the top of the support plate (14), a diagonal rod (16) being rotatably mounted on the lower surface of the motor (15), and the bottom end of the diagonal rod (16) being rotatably connected to the middle upper surface of the fourth fixed plate (10), a cylindrical groove plate (17) being provided on the outer sliding sleeve of the diagonal rod (16), a slider (18) being cross-symmetrically fixedly connected to the inner part of the cylindrical groove plate (17), and a slider (18) being provided on the outer wall of the cylindrical groove plate (17). A clamping block (19) is symmetrically fixedly connected, a guide plate (20) is rotatably connected to the inside of the clamping block (19), a first slide plate (22) is slidably connected to the inside of the rectangular slide groove (11), a rectangular groove plate (21) is fixedly connected to the upper surface of the first slide plate (22), a second fixed plate (25) is symmetrically fixedly connected to one side of the rectangular groove plate (21) close to the columnar groove plate (17), a first torsion spring rod (23) is rotatably connected to the top inner wall of the rectangular groove plate (21), and a baffle plate (24) is fixedly connected to the middle of the first torsion spring rod (23); The limiting mechanism comprises a ratchet (26), the ratchet (26) being fixedly connected to the top outer wall of the first torsion spring rod (23), a second electric telescopic rod (27) being fixedly mounted on the upper surface of the rectangular groove plate (21), a third fixed plate (28) being fixedly connected to a side of the second electric telescopic rod (27) close to the ratchet (26), a second torsion spring rod (29) being rotatably connected to the upper surface of the third fixed plate (28), and a block plate (30) being fixedly connected to the top end of the second torsion spring rod (29).

2. The automotive sheet metal stamping die according to claim 1, characterized in that: The size of the top end of the T-shaped slide plate (9) matches the size of the limiting slide groove (8).

3. The automobile sheet metal stamping die according to claim 1, characterized in that: The size of the first slide plate (22) matches the size of the rectangular slide groove (11), the size of the slider (18) matches the size of the diagonal lines set on the diagonal line rod (16), the guide plate (20) is rotatably connected to the second fixing plate (25), and the lower surface of the hub cover (13) and the upper surface of the second contact plate (12) are in the same horizontal plane.

4. The automotive sheet metal stamping die according to claim 1, characterized in that: The size of the clamping plate (30) close to the ratchet (26) matches the size between two ratchet teeth arranged on the outer wall of the ratchet (26).

5. The automobile sheet metal stamping die according to claim 1, characterized in that: A curved surface is provided on one side of the block plate (30) close to the ratchet (26), and the curved surface abuts against the outer wall of the ratchet teeth of the ratchet (26).

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