Punching die for automobile sheet metal parts

Abstract

The punching die for the automobile sheet metal part comprises a lower die base and an upper die base, a limiting groove is formed in the middle of the lower die base, and a male die is arranged at the bottom of the limiting groove; a positioning plate is arranged in the limiting groove, and a limiting hole matched with the male die is formed in the positioning plate; a female die is arranged at the lower end of the upper die base, a stamping head is arranged on the female die, and a stamping hole matched with the stamping head is formed in the male die. A movable hole is formed in one side of the lower die base, and a waste recycling drawer is arranged in the movable hole. The limiting groove and the positioning plate movably connected with the limiting groove are arranged on the lower die base, and the limiting hole matched with the male die is formed in the positioning plate, so that accurate positioning of a sheet metal part in the punching process is ensured, punching deviation is effectively avoided, and the yield of products is improved; the waste recovery drawer is arranged on one side of the lower die base, so that waste generated by punching can directly fall into the waste recovery drawer, the production process is simplified, and the production efficiency is remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile sheet metal part machining, especially relates to a punching die for automobile sheet metal part. BACKGROUND

[0002] With the vigorous development of global economy, the automobile industry has ushered in an unprecedented popular wave, and sheet metal parts, as an indispensable key element in automobile manufacturing, are widely and variously applied. Due to the diversity and complexity of automobile design, sheet metal parts often need to be shaped into various curved surfaces and need to be accurately punched to meet functional and aesthetic requirements. Punching operation, as an important part of stamping process, is to apply accurate pressure to sheet metal parts through a die, so as to accurately form the required through hole on the material.

[0003] However, in the current punching operation practice, the existing punching die often fails to achieve high precision when positioning the sheet metal part, which easily leads to deviation of the punching position, thereby affecting the yield of the product. In addition, after the punching operation is completed, the generated waste often becomes another problem to be solved. The traditional method is to introduce a separate device to clean up the waste after the punching process is completed. This step not only is cumbersome, time-consuming and laborious, but also seriously restricts the improvement of overall production efficiency. SUMMARY

[0004] The utility model aims at providing a punching die for automobile sheet metal part to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a punching die for automobile sheet metal part, comprising a lower die seat, wherein an upper die seat matched with the lower die seat is arranged above the lower die seat, and the upper die seat is movably connected with the lower die seat; a limiting groove is arranged in the middle of the lower die seat, wherein a male die is arranged at the bottom of the limiting groove; a positioning plate is arranged in the limiting groove, wherein the lower end of the positioning plate is movably connected with the limiting groove, and the upper end surface of the positioning plate is arranged above the groove opening of the limiting groove; a limiting hole matched with the male die is arranged on the positioning plate, wherein the upper end of the male die penetrates through the limiting hole and extends upward; a female die is arranged at the lower end of the upper die seat, wherein a stamping head is arranged on the female die; a stamping hole matched with the stamping head is arranged on the male die; a movable hole is arranged on one side of the lower die seat, wherein a waste recycling drawer is arranged in the movable hole; the stamping hole penetrates through the male die and extends downward, wherein the lower end of the stamping hole is in communication with the upper end opening of the waste recycling drawer.

[0006] Preferably, a plurality of extrusion blocks are arranged at the lower end of the upper die seat, wherein the upper ends of the extrusion blocks are fixedly connected with the upper die seat, and the lower ends of the extrusion blocks abut against the upper end surface of the positioning plate.

[0007] Preferably, a plurality of nitrogen springs are arranged between the positioning plate and the limiting groove, wherein the lower end of the nitrogen spring is fixedly connected with the bottom of the limiting groove, and the upper end of the nitrogen spring is in abutment with the positioning plate.

[0008] Preferably, the four corners of the lower die seat are respectively provided with first guide columns, wherein the four corners of the upper die seat are provided with first sliding sleeves matched with the first guide columns, and the first guide columns are arranged in the first sliding sleeves.

[0009] Preferably, a limiting sleeve is arranged side by side on one side of the first guide column, wherein the lower end of the upper die seat is provided with a limiting column matched with the limiting sleeve.

[0010] Preferably, the upper end of the lower die seat is provided with a plurality of buffer blocks, wherein the lower end of the buffer block is fixedly connected with the lower die seat, and the upper end of the buffer block is in abutment with the upper die seat.

[0011] Preferably, the four corners of the positioning plate are respectively provided with second sliding sleeves, wherein the bottom of the limiting groove is provided with second guide columns matched with the second sliding sleeves, and the second guide columns are arranged in the second sliding sleeves.

[0012] Preferably, an auxiliary positioning rod is arranged side by side on one side of the second guide column, wherein a positioning hole matched with the auxiliary positioning rod is formed in the positioning plate.

[0013] Compared with the prior art, the utility model has the advantages that: the utility model discloses a limiting groove and a positioning plate movably connected with the limiting groove are arranged on the lower die seat, and a limiting hole matched with the punch is formed in the positioning plate, so that the accurate positioning of the sheet metal part during the punching process is ensured, the punching deviation is effectively avoided, and the yield of the product is improved;The movable hole is formed in one side of the lower die seat, and the waste recovery drawer is arranged, so that the waste produced during the punching process can directly fall into the waste recovery drawer, without the need of an additional waste separation step, the production process is simplified, the production efficiency is significantly improved, and the working environment is kept clean;The combination of the first guide column and the first sliding sleeve, the limiting sleeve and the limiting column, and the buffer block arranged between the upper die seat and the lower die seat not only enhances the stability of the die during the stamping process, but also reduces the wear of the die and prolongs the service life;The stable movement and quick reset of the positioning plate are realized through the cooperation of the second sliding sleeve and the second guide column, the auxiliary positioning rod and the positioning hole, and the support of the nitrogen spring, the adjustment and operation process of the die is simplified, and the working efficiency is improved;The overall design comprehensively considers the punching accuracy, waste treatment, die stability and operation convenience, realizes the comprehensive performance improvement of the automobile sheet metal part punching operation, and provides strong support for the automatic and efficient production of the automobile manufacturing industry. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the overall structure schematic diagram of the utility model;

[0015] Figure 2 is the split structure schematic view of the upper die holder and the lower die holder of the utility model;

[0016] Figure 3 is the structure schematic view of the upper die holder of the utility model;

[0017] Figure 4 is the structure schematic view of the lower die holder of the utility model;

[0018] Figure 5 is the structure schematic view of the positioning plate of the utility model;

[0019] Figure 6 is the structure schematic view of the bottom of the positioning plate of the utility model.

[0020] Wherein: 1, lower die holder, 2, upper die holder, 3, limit slot, 4, male die, 5, positioning plate, 6, limit hole, 7, female die, 8, stamping head, 9, stamping hole, 10, movable hole, 11, waste recycling drawer, 12, extrusion block, 13, nitrogen spring, 14, first guide column, 15, first sliding sleeve, 16, limit sleeve, 17, limit column, 18, buffer block, 19, second sliding sleeve, 20, second guide column, 21, auxiliary positioning rod, 22, positioning hole. DETAILED DESCRIPTION

[0021] The utility model will be further explained in detail in combination with the drawings.

[0022] Please refer to Figures 1 to 6 , in order to realize the above object, the utility model provides the following technical scheme:

[0023] A punching die for automobile sheet metal parts, including lower die holder 1, wherein lower die holder 1 top is equipped with the upper die holder 2 with its adaptation, and upper die holder 2 with lower die holder 1 movable connection;Lower die holder 1 middle is equipped with limit slot 3, wherein limit slot 3 bottom is equipped with male die 4;Limit slot 3 is equipped with positioning plate 5, wherein positioning plate 5 lower end with limit slot 3 movable connection, and positioning plate 5 upper end face is set in the upper side of the slot of limit slot 3;Positioning plate 5 top is equipped with the limit hole 6 with male die 4 adaptation, wherein male die 4 upper end penetrates limit hole 6 and extends upwards;Upper die holder 2 lower end is equipped with female die 7, wherein female die 7 is equipped with stamping head 8;Male die 4 top is equipped with stamping hole 9, wherein stamping hole 9 with stamping head 8 adaptation;Lower die holder 1 one side is equipped with movable hole 10, wherein movable hole 10 is equipped with waste recycling drawer 11;Stamping hole 9 penetrates male die 4 and extends downwards, wherein stamping hole 9 lower end with waste recycling drawer 11 upper end opening intercommunication.

[0024] By placing the sheet metal part to be punched on the positioning plate 5, the sheet metal part is ensured to be closely attached to the positioning plate 5; the design of the positioning plate 5 allows it to move up and down in the limiting groove 3, but is limited by the limiting groove 3, ensuring that the sheet metal part will not displace during the punching process; when the upper die holder 2 moves downward under the drive of the punching machine, the concave die 7 and the punching head 8 thereon will also descend; the punching head 8 is matched with the punching hole 9 on the convex die 4, when the punching head 8 contacts the sheet metal part, it will exert enough pressure on the sheet metal part, so that it penetrates the limiting hole 6 and forms the required through hole on the sheet metal part; the punching hole 9 on the convex die 4 is designed to have sufficient depth to ensure that the punching head 8 can completely penetrate the sheet metal part, and at the same time the punching hole 9 extends downward and communicates with the upper end opening of the waste recycling drawer 11; during the punching process, the waste punched down will directly fall into the punching hole 9 of the convex die 4, and as the punching operation is completed, the waste will fall down along the punching hole 9 into the waste recycling drawer 11, which is designed to facilitate removal and cleaning, ensuring the cleanliness and efficiency of the production environment; the upper die holder 2 moves upward under the drive of the punching machine and returns to the initial position; the positioning plate 5 returns to the initial position under the action of the nitrogen gas spring 13, ready for the next punching operation, repeating the above steps until the punching operation of all sheet metal parts is completed; the punching die can efficiently and accurately complete the punching operation of the automobile sheet metal part, and at the same time realizes the automatic collection and treatment of waste, improves the production efficiency and product quality.

[0025] Please refer to Figure 3 As an embodiment of the utility model, the upper end of the extrusion block 12 is fixedly connected with the upper die holder 2, and the lower end of the extrusion block 12 abuts against the upper end face of the positioning plate 5.

[0026] In the above scheme, the extrusion blocks 12 are firmly fixed to the lower end surface of the upper die holder 2, ensuring that they do not loosen or fall off during the stamping process; the lower end surface of the extrusion blocks 12 is designed to be in close contact with the upper end surface of the positioning plate 5, but without applying pressure, to avoid unnecessary damage to the sheet metal part when the mold is not activated; when the upper die holder 2 begins to move downward, approaching the positioning plate 5, the extrusion blocks 12 first come into contact with the positioning plate 5; the design of the extrusion blocks 12 allows them to apply a uniform pre-pressure to the positioning plate 5 during the continued descent of the upper die holder 2, which helps to stabilize the positioning plate 5 and prevent it from moving or deforming during the stamping process, thereby ensuring accurate positioning of the sheet metal part; as the upper die holder 2 continues to descend, the punch head 8 begins to come into contact with the punch 4 and applies the main stamping force to the sheet metal part; in this process, the extrusion blocks 12 continue to apply pressure to the positioning plate 5, serving as auxiliary support and stabilization, and this dual support structure (i.e., the punch head 8 and the extrusion blocks 12) ensures the accuracy and stability of the punching operation; the presence of the extrusion blocks 12 not only improves the stability of the mold during the stamping process, but also reduces the direct friction between the positioning plate 5 and the upper die holder 2, thereby prolonging the service life of the mold; in addition, the uniform distribution and reasonable design of the extrusion blocks 12 help to disperse the impact force during the stamping process, reducing the risk of mold damage and improving the safety of the operation.

[0027] Please refer to Figure 4 As an embodiment of the present application, a plurality of nitrogen gas springs 13 are provided between the positioning plate 5 and the limiting groove 3, wherein the lower end of the nitrogen gas spring 13 is fixedly connected to the bottom of the limiting groove 3, and the upper end of the nitrogen gas spring 13 abuts against the positioning plate 5.

[0028] In the above scheme, the nitrogen gas spring 13 is firmly installed at the bottom of the limiting groove 3, and the upper end thereof abuts against the positioning plate 5. The nitrogen gas spring 13 is pre-charged to a certain pressure value to provide sufficient elastic force to ensure that it can be quickly and stably reset during the operation of the mold. When the upper mold base 2 starts to move downward, although the punch head 8 has not yet contacted the protruding die 4 at this time, the positioning plate 5 has already been subjected to slight pressure from the upper mold base 2. At this stage, the nitrogen gas spring 13 starts to work, and it absorbs and disperses this part of the pre-tightening force to prevent the positioning plate 5 from being unnecessarily moved or deformed before the stamping starts. With the further downward movement of the upper mold base 2, the punch head 8 starts to exert pressure on the protruding die 4, and then penetrates the metal plate to form a through hole. In this process, the nitrogen gas spring 13 continues to provide stable support force for the positioning plate 5 to ensure that it remains stable in position during the stamping process and prevents displacement or deformation caused by the stamping force. When the stamping is completed, the upper mold base 2 starts to rise, and the nitrogen gas spring 13 uses its stored elastic force to quickly push the positioning plate 5 back to its original position, ready for the next punching operation. In this embodiment, the use of the nitrogen gas spring 13 reduces the direct friction between the positioning plate 5 and the limiting groove 3, reduces wear, and thus prolongs the service life of the mold. At the same time, the quick resetting capability of the nitrogen gas spring 13 ensures the efficiency of the mold in continuous operation, reduces the waiting time, and improves the production efficiency.

[0029] Please refer to Figure 3 , Figure 4 , as an embodiment of the utility model, the lower mold base 1 is provided with first guide columns 14 at four corner positions, wherein the upper mold base 2 is provided with first sliding sleeves 15 matched with the first guide columns 14 at four corner positions, and the first guide columns 14 are arranged in the first sliding sleeves 15; the first guide columns 14 are provided with limiting sleeves 16 side by side, and the lower end of the upper mold base 2 is provided with limiting columns 17 matched with the limiting sleeves 16.

[0030] The first guide column 14 is precisely installed at the four corners of the lower die seat 1, and the four corners of the upper die seat 2 are equipped with first sliding sleeves 15 matched with the first guide column 14; when the upper die seat 2 and the lower die seat 1 are closed, the first guide column 14 will be smoothly inserted into the first sliding sleeve 15, ensuring the precise alignment between the upper die seat 2 and the lower die seat 1 in the vertical direction; at the same time, the limiting sleeve on one side of the first guide column 14 is also precisely installed on the lower die seat 1, and the lower end of the upper die seat 2 is provided with a limiting column 17 matched with the limiting sleeve; the cooperation of the limiting column 17 and the limiting sleeve further limits the movement of the upper die seat 2 in the horizontal direction, ensuring that the mold will not be deflected or tilted during operation; when the upper die seat 2 starts to move downward for stamping operation, the cooperation of the first guide column 14 and the first sliding sleeve 15 plays an accurate guiding role; the first guide column 14 smoothly slides along the inner wall of the first sliding sleeve 15, ensuring the smooth movement of the upper die seat 2 in the vertical direction; at the same time, the close cooperation of the limiting column 17 and the limiting sleeve prevents any movement or deflection of the upper die seat 2 in the horizontal direction, thereby ensuring the accuracy and stability of the stamping operation.

[0031] Please refer to Figure 3 , Figure 4 , as an embodiment of the utility model, the upper end of the lower die seat 1 is provided with a plurality of buffer blocks 18, wherein the lower end of the buffer block 18 is fixedly connected with the lower die seat 1, and the upper end of the buffer block 18 abuts against the upper die seat 2.

[0032] In the above-mentioned scheme, the buffer block 18 is firmly installed on the upper end face of the lower die seat 1, and its lower end is fixedly connected with the lower die seat 1, ensuring that it will not loosen or fall off during mold operation; the upper end face of the buffer block 18 is designed to be in contact with the bottom surface of the upper die seat 2, but no pressure is applied when the mold is not started, so as to avoid unnecessary compression or deformation of the mold; when the upper die seat 2 starts to move downward and prepares for stamping operation, the buffer block 18 starts to work; at this time, the upper end face of the buffer block 18 gradually comes into contact with the bottom surface of the upper die seat 2 and starts to absorb and disperse the impact force from the upper die seat 2; during the stamping process, the upper die seat 2 moves downward at a relatively fast speed, and the stamping head 8 exerts a huge pressure on the punch 4, thereby penetrating the metal plate to form a through hole; in this process, the buffer block 18 plays a key role in buffering and damping, and it absorbs and disperses the huge impact force from the upper die seat 2, preventing the lower die seat 1 and the punch 4 from being damaged due to direct impact; at the same time, the buffer block 18 also reduces the vibration and noise generated during the stamping process of the mold, improving the stability and comfort of the operation; in addition, the buffer block 18 also improves the reliability and stability of the mold, ensuring the accuracy and consistency of the stamping operation.

[0033] Please refer to Figure 3 , Figure 4 and Figure 5, as an embodiment of the utility model, four corners position of positioning plate 5 respectively install second sliding sleeve 19, wherein the bottom of limiting groove 3 is equipped with the second guide column 20 that second sliding sleeve 19 is adapted to, and second guide column 20 is arranged in second sliding sleeve 19, and second guide column 20 side is equipped with the auxiliary positioning rod 21 in parallel, wherein the positioning hole 22 that is equipped with with auxiliary positioning rod 21 is adapted to be opened in positioning plate 5.

[0034] In the above-mentioned scheme, the second sliding sleeve 19 is accurately installed at the four corner positions of the positioning plate 5, and the bottom of the limiting groove 3 of the lower die seat 1 is equipped with the second guide column 20 that is adapted to the second sliding sleeve 19. When the positioning plate 5 is placed in the limiting groove 3, the second guide column 20 will be smoothly inserted into the second sliding sleeve 19, ensuring the accurate positioning of the positioning plate 5 in the horizontal direction. At the same time, the auxiliary positioning rod 21 is installed on one side of the limiting groove 3 and is adapted to the positioning hole 22 opened on the positioning plate 5. This design further restricts the movement of the positioning plate 5 in the horizontal direction, enhancing the stability of the mold. During the stamping process, the upper die seat 2 moves downward, and the stamping head 8 applies pressure to the punch 4, thereby forming a through hole in the sheet metal part. At this time, the cooperation of the second guide column 20 and the second sliding sleeve 19 plays an accurate guiding role, ensuring the position stability of the positioning plate 5 during the stamping process. The close cooperation of the auxiliary positioning rod 21 and the positioning hole 22 further enhances the stability of the mold, preventing the positioning plate 5 from deflecting or tilting during the stamping process. The cooperation of the second guide column 20 and the second sliding sleeve 19, as well as the auxiliary positioning rod 21 and the positioning hole 22, not only improves the stability of the mold during operation, but also reduces the friction and wear between the mold components. This design reduces the risk of damage to the mold due to long-term operation, prolonging the service life of the mold.

[0035] Although the specific embodiments of the utility model are described above, those skilled in the art should understand that these are only illustrative, and the protection scope of the utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the utility model, but these changes and modifications all fall within the protection scope of the utility model.

Claims

1. A punching die for an automobile sheet metal part, comprising a lower die seat (1), wherein an upper die seat (2) is arranged above the lower die seat (1) and is matched with the lower die seat (1), and the upper die seat (2) is movably connected with the lower die seat (1); characterized in that, The lower die seat (1) is provided with a limiting slot (3) in the middle, wherein the bottom of the limiting slot (3) is provided with a male die (4); the limiting slot (3) is provided with a positioning plate (5), wherein the lower end of the positioning plate (5) is movably connected with the limiting slot (3), and the upper end surface of the positioning plate (5) is arranged above the slot opening of the limiting slot (3); the positioning plate (5) is provided with a limiting hole (6) matched with the male die (4), wherein the upper end of the male die (4) penetrates through the limiting hole (6) and extends upward; the lower end of the upper die seat (2) is provided with a female die (7), wherein the female die (7) is provided with a punching head (8); the male die (4) is provided with a punching hole (9), wherein the punching hole (9) is matched with the punching head (8); one side of the lower die seat (1) is provided with a movable hole (10), wherein the movable hole (10) is provided with a waste recycling drawer (11); the punching hole (9) penetrates through the male die (4) and extends downward, wherein the lower end of the punching hole (9) is in communication with the upper end opening of the waste recycling drawer (11).

2. The piercing die for an automobile sheet metal member according to claim 1, wherein The lower end of the upper die seat (2) is provided with a plurality of extrusion blocks (12), wherein the upper end of the extrusion block (12) is fixedly connected with the upper die seat (2), and the lower end of the extrusion block (12) abuts against the upper end surface of the positioning plate (5).

3. The piercing die for an automobile sheet metal member according to claim 1, wherein A plurality of nitrogen gas springs (13) are arranged between the positioning plate (5) and the limiting slot (3), wherein the lower end of the nitrogen gas spring (13) is fixedly connected with the bottom of the limiting slot (3), and the upper end of the nitrogen gas spring (13) abuts against the positioning plate (5).

4. The piercing die for an automobile sheet metal member according to claim 1, wherein The lower die seat (1) is provided with a first guide column (14) at the position of each corner, wherein the upper die seat (2) is provided with a first sliding sleeve (15) matched with the first guide column (14), and the first guide column (14) is arranged in the first sliding sleeve (15).

5. The piercing die for an automobile sheet metal member according to claim 4, wherein The first guide column (14) is provided with a limiting sleeve (16) side by side, wherein the lower end of the upper die seat (2) is provided with a limiting column (17) matched with the limiting sleeve (16).

6. The piercing die for an automobile sheet metal member according to claim 1, wherein The upper end of the lower die seat (1) is provided with a plurality of buffer blocks (18), wherein the lower end of the buffer block (18) is fixedly connected with the lower die seat (1), and the upper end of the buffer block (18) abuts against the upper die seat (2).

7. The piercing die for an automobile sheet metal member according to claim 1, wherein The positioning plate (5) is provided with a second sliding sleeve (19) at the position of each corner, wherein the bottom of the limiting slot (3) is provided with a second guide column (20) matched with the second sliding sleeve (19), and the second guide column (20) is arranged in the second sliding sleeve (19).

8. The piercing die for an automobile sheet metal member according to claim 7, wherein The second guide column (20) is provided with an auxiliary positioning rod (21) side by side, wherein the positioning plate (5) is provided with a positioning hole (22) matched with the auxiliary positioning rod (21).

Images