Automobile part stamping die

Abstract

The invention relates to the technical field of stamping equipment, and provides an automobile part stamping die which comprises an upper die body and a lower die body which are matched with each other, at least one side wall of the upper die body is provided with an edge folding groove, a bottom plate is arranged at the bottom of an inner cavity of the lower die body, and a rotatable edge folding block is arranged on the side, corresponding to the edge folding groove, of the inner cavity of the lower die body. According to the die, the defects in the prior art are overcome, the design is reasonable, the structure is compact, when the die is closed, the edge folding block rotates, the bending plate at the position is bent, the whole bending process can be completed only through one-time punching, the punching efficiency is high, the production speed is high, and when the die is split, the production efficiency is high. The stamping part can be separated from the lower die along with the upper die, manual die unloading is not needed, and the die unloading effect is greatly improved. When the die is closed, the bending part is slotted, the slotting operation of the bending part and the bending part can be completed through one-time punching, the subsequent slotting operation is not needed, the machining steps are greatly reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of stamping equipment, and in particular to a stamping die for automobile parts. Background Art

[0002] The stamping die for automobile parts is a special tool that uses a die installed on a press to apply a deformation force to the sheet material in the die, causing the sheet material to deform or separate in the die, thereby obtaining automobile parts with a certain shape, size and precision.

[0003] Since automobile accessories are usually irregular in shape, some accessories have a bent portion on the upper edge, and the current stamping die cannot complete the bending process of the upper edge of the accessory in one stamping, and requires subsequent secondary bending or other processing, which not only increases the production cost, but also significantly reduces the production efficiency. For this reason, we propose a stamping die for automobile accessories. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies of the prior art, the present invention provides an automobile accessory stamping die, which overcomes the deficiencies of the prior art, has a reasonable design and a compact structure, and solves the problem that the existing stamping die cannot complete the bending process of the upper edge of the accessory in one stamping.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical scheme: a stamping die for automobile parts, comprising an upper die and a lower die that cooperate with each other, at least one side wall of the upper die is provided with a folding groove, the bottom of the inner cavity of the lower die is provided with a bottom plate, and a rotatable folding block is provided on the side of the inner cavity of the lower die corresponding to the folding groove, so that the folding block moves into the folding groove when the mold is closed, so that the stamping plate on this side moves into the folding groove to form a bent portion.

[0008] Preferably, the bottom plate can be raised and lowered in the inner cavity of the lower mold, and the bottom of the folding block extends to the bottom of the bottom plate so that the folding block rotates when the bottom plate moves downward. The folding block rotates inside the lower mold through the rotating rod in the middle, and the two sides of the folding block are connected to the inside of the lower mold through torsion springs. The top of the folding block is provided with a folding head that matches the folding groove to complete the bending of one side of the stamping plate.

[0009] Preferably, a slide groove which passes through from top to bottom is provided inside the folding head, and a cutting plate is slidably connected inside the slide groove. The top of the cutting plate is an inclined slope, and a cutting mechanism is provided at the bottom. The top of the folding groove includes two mutually connected beveled edges, and a protrusion which matches the inclined surface of the top of the cutting plate is formed at the connection of the two beveled edges, so that when the mold is closed, the protrusion squeezes the cutting plate so that the cutting mechanism completes the grooving of the bending part downward.

[0010] Preferably, outer grooves are provided on both sides of the slide groove, a second spring is provided in the outer groove, and extension blocks are provided on both sides of the cutting plate corresponding to the outer grooves. The extension blocks slide in the outer grooves and are connected to the second spring so that the cutting plate is located in the slide groove when not subjected to external force.

[0011] Preferably, the cutting mechanism is a cutting knife or a conical cutting column.

[0012] Preferably, a receiving groove for cooperating with the cutting mechanism is provided at the bottom of the folding groove, a plurality of first springs are provided inside the receiving groove, and a support plate sliding inside the receiving groove is connected to the top of the first spring.

[0013] Preferably, the bottom of the upper mold is rounded, and a trapezoidal groove with a smaller top and a larger bottom is provided at the bottom, and there are disconnected gaps between the four sides of the bottom. A trapezoidal plate that can move up and down is slidably connected in the trapezoidal groove, and the bottom of the trapezoidal plate extends out of the bottom of the upper mold, so that the trapezoidal plate moves downward in the trapezoidal groove when the mold is closed, causing the four sides of the bottom of the upper mold to expand outward.

[0014] Preferably, there is a gap between the bottom plate and the bottom of the lower mold inner cavity, and the bottom of the lower mold is provided with a plurality of third springs for supporting the bottom plate, and the bottom of the bottom plate is provided with a plurality of guide rods penetrating the bottom of the lower mold.

[0015] Preferably, a plurality of unloading columns are provided in the inner cavity of the lower die, and the unloading columns penetrate the lower die and the bottom plate, and the bottom of the unloading columns extends to the bottom of the lower die and is connected to a unloading plate, and a plurality of fourth springs connected to the bottom of the lower die are provided on the top of the unloading plate, so that the unloading columns move upward to push the stamping parts when the mold is split.

[0016] Preferably, a base is provided at the bottom of the lower mold, the base includes an upper plate and a lower plate, a plurality of support columns are provided between the upper plate and the lower plate, and the lower mold is arranged above the upper plate.

[0017] (III) Beneficial effects

[0018] The embodiment of the present invention provides a stamping die for automobile parts, which has the following beneficial effects:

[0019] 1. When the mold is closed, the folding block rotates and extends into the folding groove, so that the bending plate at this location is squeezed and closely approaches the bottom of the folding groove. At this time, the bending of the upper edge of the stamping plate is completed. Only one stamping is required to complete the entire bending process. The stamping efficiency is high and the production speed is fast. When the mold is separated, the stamping parts will follow the upper mold to separate from the lower mold, and there is no need for manual demolding, which greatly improves the demolding effect.

[0020] 2. When the mold is closed, the bottom plate moves downward and causes the folding block to rotate, thereby completing the bending of the upper edge of the stamping plate. This not only has a high degree of automation, but also does not require external force to drive the folding block, greatly reducing the production cost of the equipment.

[0021] 3. When the mold is closed, the convexity squeezes the cutting plate, so that the cutting mechanism cuts the bending part downward. At this time, the bending part is slotted. The bending part and the slotting operation of the bending part can be completed in one stamping, and no subsequent slotting operation is required, which greatly reduces the processing steps and improves production efficiency.

[0022] 4. During stamping, the four sides of the bottom of the upper die expand outward, so that the corners of the stamping plate are subjected to the outward expansion force of the four sides of the bottom of the upper die, which can avoid the rebound phenomenon of the stamping plate after stamping and effectively improve the stamping quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic cross-sectional plan view of the overall structure of the present invention;

[0025] Figure 3 It is a three-dimensional schematic diagram of the upper mold structure of the present invention;

[0026] Figure 4 It is a three-dimensional schematic diagram of the bottom plate structure of the present invention;

[0027] Figure 5 It is a top perspective schematic diagram of the hemming block structure of the present invention;

[0028] Figure 6 It is a bottom-up stereoscopic schematic diagram of the hemming block structure of the present invention;

[0029] Figure 7 It is a top perspective schematic diagram of the slideway structure of the present invention;

[0030] Figure 8 It is a three-dimensional schematic diagram of two cutting plate structures of the present invention.

[0031] In the figure: 1. upper die; 11. folding groove; 12. protrusion; 13. receiving groove; 14. first spring; 15. support plate; 16. trapezoidal groove; 17. trapezoidal plate; 2. lower die; 21. bottom plate; 211. guide rod; 212. third spring; 22. folding block; 221. rotating rod; 222. torsion spring; 223. folding head; 224. slide groove; 225. outer groove; 226. second spring; 227. cutting plate; 228. extension block; 23. unloading column; 24. unloading plate; 25. fourth spring; 3. base. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0033] See attached Figure 1-8 A stamping die for automobile parts comprises an upper die 1 and a lower die 2 which cooperate with each other, and a base 3 for supporting the lower die 2. To reduce damage to the stamped parts, the bottom periphery of the upper die 1 is rounded, and at least one of its side walls is provided with a folding groove 11. The bottom of the inner cavity of the lower die 2 is provided with a bottom plate 21, and the size of the bottom plate 21 is adapted to the inner cavity of the lower die 2. A rotatable folding block 22 is provided on the side of the inner cavity of the lower die 2 corresponding to the folding groove 11, so that the folding block 22 moves into the folding groove 11 when the mold is closed, so that the stamping plate on this side moves into the folding groove 11 to form a bending portion. When the upper die 1 moves downward to the inner cavity of the lower die 2 to form the mold closing action, the upper die 1 is provided with a folding block 22. During operation, the outer edge of the stamping plate will bend upward and be located between the outer wall of the upper die 1 and the inner cavity of the lower die 2. Then the folding block 22 will rotate and extend toward the inside of the folding groove 11. At this time, the bent plate at the edge will be squeezed by the folding block 22 and tightly closed to the bottom of the inside of the folding groove 11. At this time, the bending of the upper edge of the stamping plate is completed. Only one stamping is required to complete the entire bending process. The stamping efficiency is high and the production speed is fast. When the mold is closed, the bent part of the stamping part is attached to the folding groove 11. When the upper mold 1 and the lower mold 2 are separated, the stamping part will follow the upper mold 1 to separate from the lower mold 2. There is no need for manual demolding, which greatly improves the demolding effect.

[0034] The bottom plate 21 can be raised and lowered and arranged in the inner cavity of the lower mold 2. The bottom of the folding block 22 extends to the bottom of the bottom plate 21, so that the folding block 22 rotates when the bottom plate 21 moves downward. The folding block 22 rotates inside the lower mold 2 through the rotating rod 221 in the middle, and the two sides of the folding block 22 are connected to the inside of the lower mold 2 through the torsion spring 222, so that when the folding block 22 is not subjected to force, it is stored in the inside of the lower mold 2. The top of the folding block 22 is provided with a folding head 223 that matches the folding groove 11 to complete When the paired stamping plates are bent on one side and the mold is closed by stamping, the bottom plate 21 moves downward due to the force of the lower mold 2. At this time, the bottom of the folding block 22 is subjected to force to rotate around the axis of the rotating rod 221. At this time, the folding head 223 rotates downward and pushes the stamping plate on this side to move into the folding groove 11, so that the stamping plate at this location fits the bottom of the folding groove 11 and forms a bending portion. Not only is the degree of automation high, but there is no need for external force to drive the folding block 22, which greatly reduces the production cost of the equipment.

[0035] The inside of the hemming head 223 is provided with a slide groove 224 which passes through from top to bottom. The width of the slide groove 224 is smaller than the width of the hemming head 223. A cutting plate 227 is slidably connected to the inside of the slide groove 224. The top of the cutting plate 227 is an inclined slope, and a cutting mechanism is provided at the bottom. The top of the inside of the hemming groove 11 includes two mutually connected beveled edges, and a protrusion 12 which matches the top bevel of the cutting plate 227 is formed at the connection of the two beveled edges, so that when the mold is closed, the protrusion 12 squeezes the cutting plate 227 so that the cutting mechanism completes the grooving of the bending part downward. When the mold is closed, the hemming head 223 moves into the hemming groove 11. During the movement, the protrusion 12 will squeeze the cutting plate 227, so that the cutting plate 227 drives the cutting mechanism to move downward. At this time, the cutting mechanism cuts the bending part downward, so that the bending part is grooved. The grooving operation of the bending part and the bending part can be completed by one stamping, and no subsequent grooving operation is required, which greatly reduces the processing steps and improves the production efficiency.

[0036] Outer grooves 225 are provided on both sides of the slide groove 224, and second springs 226 are provided in the outer grooves 225. Extension blocks 228 are provided on both sides of the cutting plate 227 corresponding to the outer grooves 225. The extension blocks 228 slide in the outer grooves 225 and are connected to the second springs 226, so that the cutting plate 227 is located in the slide groove 224 when not subject to external force. When the top of the cutting plate 227 is subjected to force, it will move downward along the slide groove 224. At this time, the extension block 228 will also move along the outer groove 225. When the cutting plate 227 is not subjected to force, the extension block 228 drives the cutting plate 227 to reset under the action of the second spring 226 to prepare for the next work.

[0037] The cutting mechanism is a cutting knife or a conical cutting column, which is convenient for making strip grooves or opening holes.

[0038] A receiving groove 13 for cooperating with the cutting mechanism is provided at the bottom of the folding groove 11, and a plurality of first springs 14 are provided inside the receiving groove 13. The top of the first spring 14 is connected to a support plate 15 that slides inside the receiving groove 13. When cutting the groove, the cutting mechanism will squeeze the stamping plate above the support plate 15 and make the support plate 15 move into the receiving groove 13, so that a gap is left above the receiving groove 13 for the cut plate. After demolding, the support plate 15 is reset upward under the action of the first spring 14, and the cut plate is pushed out without manual cleaning.

[0039] A trapezoidal groove 16 with a smaller top and a larger bottom is provided at the bottom of the upper die 1, and there are disconnected gaps between the four sides of the bottom, so that the four sides can expand outward, and the bottom is made of elastic spring steel material, so that it has resilience, and a trapezoidal plate 17 that can move up and down is slidably connected in the trapezoidal groove 16, and the bottom of the trapezoidal plate 17 extends out of the bottom of the upper die 1, so that when the mold is closed, the trapezoidal plate 17 moves downward in the trapezoidal groove 16, so that the four sides of the bottom of the upper die 1 expand outward, and during stamping, the trapezoidal plate 17 contacts the stamping plate and is subjected to its reverse force. At this time, the trapezoidal plate 17 moves upward in the trapezoidal groove 16, so that the four sides of the bottom of the upper die 1 expand outward, and the corners of the stamping plate are subjected to the outward expansion force of the four sides of the bottom of the upper die 1, which can avoid the rebound phenomenon of the stamping plate after stamping, and effectively improve the stamping quality.

[0040] There is a gap between the bottom plate 21 and the bottom of the inner cavity of the lower mold 2, and the bottom of the lower mold 2 is provided with a plurality of third springs 212 for supporting the bottom plate 21 to ensure that the bottom plate 21 can rebound to its initial position when not subjected to force, and the bottom of the bottom plate 21 is provided with a plurality of guide rods 211 penetrating the bottom of the lower mold 2 to ensure the stability of the bottom plate 21 during the lifting process.

[0041] A plurality of unloading columns 23 are provided in the inner cavity of the lower mold 2. The unloading columns 23 penetrate the lower mold 2 and the bottom plate 21. The bottom of the unloading columns 23 extends to the bottom of the lower mold 2 and is connected to a unloading plate 24. When the mold is closed, the unloading columns 23 are squeezed by the upper mold 1 and move downward. A plurality of fourth springs 25 connected to the bottom of the lower mold 2 are provided on the top of the unloading plate 24, so that when the mold is opened, under the action of the fourth springs 25, the unloading plate 24 drives the plurality of unloading columns 23 to move upward and push the stamping parts, so that the stamping parts can be smoothly pushed out of the lower mold 2.

[0042] The base 3 includes an upper plate and a lower plate, a plurality of support columns are arranged between the upper plate and the lower plate, a plurality of holes for installation and fixation are opened at the bottom of the lower plate, and the lower mold 2 is arranged above the upper plate so that there is space for the unloading column 23 and the unloading plate 24 to move under the upper plate.

[0043] 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. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0044] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A stamping die for automobile parts, comprising an upper die (1) and a lower die (2) that cooperate with each other, characterized in that: At least one side wall of the upper mold (1) is provided with a folding groove (11), the bottom of the inner cavity of the lower mold (2) is provided with a bottom plate (21), and a rotatable folding block (22) is provided on the side of the inner cavity of the lower mold (2) corresponding to the folding groove (11), so that when the molds are closed, the folding block (22) moves into the folding groove (11), so that the stamping plate on this side moves into the folding groove (11) to form a bent portion.

2. The automotive parts stamping die according to claim 1, characterized in that: The bottom plate (21) can be raised and lowered and arranged in the inner cavity of the lower mold (2); the bottom of the folding block (22) extends to the bottom of the bottom plate (21) so that the folding block (22) rotates when the bottom plate (21) moves downward; the folding block (22) rotates inside the lower mold (2) through a rotating rod (221) in the middle, and both sides of the folding block (22) are connected to the inside of the lower mold (2) through a torsion spring (222); the top of the folding block (22) is provided with a folding head (223) that matches the folding groove (11) to complete the bending of one side of the stamping plate.

3. The automotive parts stamping die according to claim 2, characterized in that: The inside of the folding head (223) is provided with a slide groove (224) which passes through from top to bottom, and the inside of the slide groove (224) is slidably connected with a cutting plate (227), the top of the cutting plate (227) is an inclined slope, and the bottom is provided with a cutting mechanism, the top of the inside of the folding groove (11) includes two mutually connected bevels, and the connection between the two bevels is formed with a protrusion (12) that matches the top bevel of the cutting plate (227), so that when the mold is closed, the protrusion (12) presses the cutting plate (227) so that the cutting mechanism completes the grooving of the bending part downward.

4. The automotive parts stamping die according to claim 3, characterized in that: The slide groove (224) is provided with outer grooves (225) on both sides, and a second spring (226) is provided inside the outer groove (225). The cutting plate (227) is provided with extension blocks (228) on both sides corresponding to the outer grooves (225). The extension blocks (228) slide in the outer grooves (225) and are connected to the second spring (226) so that the cutting plate (227) is located in the slide groove (224) when no external force is applied.

5. The automotive parts stamping die according to claim 3, characterized in that: The cutting mechanism is a cutting knife or a conical cutting column.

6. The automotive parts stamping die according to claim 5, characterized in that: The bottom of the folding groove (11) is provided with a receiving groove (13) for cooperating with the cutting mechanism, a plurality of first springs (14) are arranged inside the receiving groove (13), and the top of the first spring (14) is connected with a supporting plate (15) which slides inside the receiving groove (13).

7. An automobile parts stamping die according to any one of claims 1 to 4, characterized in that: The bottom of the upper mold (1) is rounded, and a trapezoidal groove (16) with a smaller top and a larger bottom is provided at the bottom, and there are disconnected gaps between the four sides of the bottom. A trapezoidal plate (17) that can move up and down is slidably connected in the trapezoidal groove (16), and the bottom of the trapezoidal plate (17) extends out of the bottom of the upper mold (1), so that when the mold is closed, the trapezoidal plate (17) moves downward in the trapezoidal groove (16), so that the four sides of the bottom of the upper mold (1) expand outward.

8. The automotive parts stamping die according to claim 1, characterized in that: There is a gap between the bottom plate (21) and the bottom of the inner cavity of the lower mold (2), and the bottom of the lower mold (2) is provided with a plurality of third springs (212) for supporting the bottom plate (21), and the bottom of the bottom plate (21) is provided with a plurality of guide rods (211) penetrating the bottom of the lower mold (2).

9. The automotive parts stamping die according to claim 1, characterized in that: A plurality of discharge columns (23) are arranged in the inner cavity of the lower die (2). The discharge columns (23) penetrate the lower die (2) and the bottom plate (21). The bottom of the discharge columns (23) extends to the bottom of the lower die (2) and is connected to a discharge plate (24). The top of the discharge plate (24) is provided with a plurality of fourth springs (25) connected to the bottom of the lower die (2), so that the discharge columns (23) move upward to push the stamping parts when the die is split.

10. The automobile parts stamping die according to claim 1, characterized in that: A base (3) is provided at the bottom of the lower mold (2), and the base (3) comprises an upper plate and a lower plate, a plurality of support columns are provided between the upper plate and the lower plate, and the lower mold (2) is arranged above the upper plate.

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