Automobile panel stamping die

Abstract

The present invention relates to the technical field of sheet metal stamping, and discloses a stamping die for automobile sheet metal parts, including a seat plate, a lower half mold arranged on the upper end of the seat plate, a plurality of guide posts arranged on the lower half mold, an upper half mold arranged on the plurality of guide posts, and an alignment unit arranged on the lower half mold, wherein the alignment unit includes an alignment component and a fixing component arranged on the lower half mold; the alignment component includes two short slides arranged on the lower half mold, sliding grooves provided on the short slides and the long slides, and a plurality of sliding plates slidingly arranged on the corresponding sliding grooves. By setting the alignment component, after placing the metal sheet in the stamping cavity, the metal sheet is automatically adjusted to the center of the stamping cavity, the operation is simple and fast, and the positioning can be performed accurately. By using the fixing component, when the metal sheet is adjusted to the center, the clamping plate can clamp and fix the four sides of the metal sheet, effectively preventing the warping of the metal sheet during stamping and affecting the stamping quality.

Description

Technical Field

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

[0002] Automotive sheet metal stamping dies are tools used to produce automotive sheet metal parts. They stamp the metal sheets into the required shape and size by applying pressure on the metal sheets. These dies play a vital role in automobile manufacturing. Automotive sheet metal stamping dies usually consist of an upper die and a lower die. The space between the upper and lower dies is called a stamping cavity, which is used to place the metal sheet to be stamped. The shape and size of the upper and lower dies match the required shape and size of the parts.

[0003] When stamping the center of a metal sheet, the staff must first place the metal sheet in the stamping cavity by manual loading or mechanical feeding, and then place the metal sheet in the center of the stamping cavity by using a machine vision system or manual operation combined with auxiliary tools to ensure the accuracy and efficiency of the stamping process. However, the machine vision system is expensive, and the sensor and feedback system require a large cost to maintain. At the same time, it may take a lot of time and expertise to establish and adjust the machine vision system. Setting technical parameters such as light source, camera angle, and image processing algorithm requires experienced engineers to complete, which greatly increases the production cost and difficulty. If manual operation is used, the metal sheet needs to be adjusted manually through auxiliary tools. Manual adjustment may cause errors due to eye observation, manual operation or inaccurate judgment, thereby affecting the accuracy and quality of sheet metal stamping. Therefore, it is necessary to design a stamping die for automobile sheet parts, so that the die can automatically adjust the metal sheet to the center of the stamping cavity before stamping the metal sheet, and at the same time, the four sides of the metal sheet can be clamped and fixed after the adjustment is completed to prevent warping during the stamping process, which affects the production quality and efficiency of the stamped parts. Summary of the invention

[0004] In view of the problems in the prior art of positioning the metal sheet in the center of the stamping cavity, that the mechanical vision system is expensive and difficult to maintain, and that the manual operation has large errors and is prone to safety accidents, a stamping die for automobile sheet parts is proposed.

[0005] The present application provides a stamping die for automobile panels, the purpose of which is to: by setting an alignment component, after the metal sheet is placed in the stamping cavity, automatically adjust the metal sheet to the center of the stamping cavity, the operation is simple and quick, and the positioning can be accurate. Through the fixing component, when the metal sheet is adjusted to the center, the clamping plate can clamp and fix the four sides of the metal sheet, effectively preventing the warping of the metal sheet during stamping, which affects the stamping quality.

[0006] The technical solution of the present invention is: an automobile panel stamping die, comprising a seat plate, a lower half die arranged on the upper end of the seat plate, a plurality of guide posts arranged on the lower half die, an upper half die arranged on the plurality of guide posts, and also comprising an alignment unit arranged on the lower half die, the alignment unit comprising an alignment component and a fixing component arranged on the lower half die;

[0007] The alignment component includes two short slides and two long slides arranged on the lower half mold, sliding grooves provided on the short slides and the long slides, a plurality of sliding plates slidably provided on the corresponding sliding grooves, two round holes provided on each sliding plate, a plurality of bearings provided in the plurality of round holes, a plurality of threaded sleeves provided on the inner rings of the plurality of bearings, a threaded rod threadedly provided on the plurality of threaded sleeves, an alignment plate provided on one end of the two corresponding threaded rods, a servo motor provided in the seat plate, a driving rod provided at the driving end of the servo motor, a threaded groove 1 provided on the driving rod, a hinge block threadedly installed on the driving rod, and a driving assembly provided between the plurality of sliding plates and the driving rod;

[0008] The plurality of sliding plates are all slidably installed in the corresponding sliding grooves, the lower end faces of the plurality of sliding plates are all T-shaped, the threaded sleeve is cylindrical, and the inner ring is provided with a spiral groove matching the threaded rod, the end of the alignment plate away from the corresponding sliding plate is set as a chamfer, the interior of the lower half mold is set as a cavity, the driving rod and the hinge block are located in the cavity, and a cavity is set in the sliding plate.

[0009] Furthermore, the driving assembly includes two transmission rods arranged on the seat plate, two threaded grooves provided on the two transmission rods, a lifting block threadedly installed on the two transmission rods, an axle rod one arranged at both ends of the hinge block and one side of the two lifting blocks, an axle rod two arranged at the lower end of each sliding plate, a short rod is commonly arranged between the axle rod two at the lower ends of the two sliding plates located on the two short slides and the two corresponding axle rods one on the hinge block, a long rod is commonly arranged between the axle rod two at the lower ends of the two sliding plates located on the two long slides and the corresponding axle rod one on the lifting block, a transmission gear is arranged on the driving rod and the two transmission rods, the driving rod is located in the middle of the two transmission rods, the transmission gears on the two transmission rods are meshed with the transmission gears on the driving rod, and the two transmission rods, the hinge block and the lifting block are all located in the cavity of the lower half mold.

[0010] Furthermore, the fixing component includes two screw rods arranged on both sides of multiple sliding plates, ball nuts arranged at the upper and lower ends of each screw rod, and a clamping plate arranged between the two corresponding ball nuts. The thread directions at the upper and lower ends of each screw rod are opposite, and a transmission assembly is arranged between the screw rod and the corresponding threaded rod.

[0011] Furthermore, the transmission assembly includes a bevel gear 1 arranged on the threaded sleeve, a mounting shaft arranged inside the sliding plate, a bevel gear 2 arranged at the upper end of the mounting shaft, a driving gear arranged on the mounting shaft, and a controlled gear arranged on the screw rod, the bevel gear 1 is meshed with the bevel gear 2, the driving gear is meshed with the controlled gear, the transmission assembly is arranged in the cavity of the sliding plate, and a reset element is installed on the seat plate.

[0012] Furthermore, the reset element includes multiple reset plates arranged on the seat plate, two push rods arranged on the multiple reset plates, and a push plate arranged at one end of the multiple push rods away from the corresponding reset plates. Each of the sliding plates is provided with a square groove that matches the corresponding push plate.

[0013] Furthermore, the seat plate is provided with a plurality of mounting holes, each of the plurality of mounting holes is threadedly installed with a screw rod, and a pentagonal nut for fixing is threadedly installed on the screw rod.

[0014] Furthermore, a plurality of quarter-spherical grooves are provided on one side of each of the clamping plates, and a ball is slidably installed in each of the spherical grooves.

[0015] Furthermore, the length ratio between the driving rod and the two transmission rods is equal to the pitch ratio between the first thread groove and the second thread groove.

[0016] Beneficial effects of the present invention:

[0017] By setting the alignment components, the position of the metal sheet in the stamping cavity can be adjusted by multiple alignment plates before the metal sheet is stamped and formed, so that the solid metal sheet can be accurately positioned in the center of the stamping cavity. The operation is simple and quick, and the metal sheet can be quickly and accurately positioned in the center of the stamping cavity without affecting the stamping production efficiency.

[0018] By setting up the fixing components, after multiple alignment plates align and position the four sides of the metal sheet, the alignment plates move to both sides under the action of the thrust, and in the process of movement, the clamping plates at the upper and lower ends are driven to clamp and fix the four sides of the metal sheet in the vertical direction, effectively avoiding the warping of the edges when stamping the metal sheet, and improving the stamping production quality.

[0019] By setting a reset element, when the stamping of the metal sheet is completed, the multiple alignment plates are reset to the outside by reversing the servo motor. Since a plurality of ball bearings are provided on the side of the clamping plate that contacts the metal sheet, the clamping plate can slide on the surface of the metal sheet, and the push plate will contact the alignment plate and generate a reverse thrust while the alignment plate is reset, so that the two threaded rods on the alignment plate move in the thrust direction and the two clamping plates are reset, which makes it easy for the staff to take out the stamped metal sheet, thereby improving the stamping production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure from a first viewing angle of the present invention;

[0021] Figure 2 For the present invention Figure 1 Schematic diagram of the structure after removing the upper half mold;

[0022] Figure 3 For the present invention Figure 2 Schematic diagram of the structure after removing the lower half mold;

[0023] Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0024] Figure 5 It is a schematic diagram of the structure of the driving assembly of the present invention;

[0025] Figure 6 It is a schematic diagram of the installation structure of the reset element of the present invention;

[0026] Figure 7 It is a schematic diagram of the structure of the fixing component of the present invention;

[0027] Figure 8 For the present invention Figure 7 The plane diagram after removing the alignment plate;

[0028] Fig. 9 For the present invention Figure 7 Schematic diagram of the structure after removing the sliding block;

[0029] Fig.10 For the present invention Fig. 9 Enlarged structural diagram at B in the middle.

[0030] In the figure:

[0031] 1. Base plate; 2. Lower mold; 3. Guide column; 4. Upper mold; 5. Short slide plate; 6. Long slide plate; 7. Sliding groove; 8. Sliding plate; 9. Threaded sleeve; 10. Threaded rod; 11. Alignment plate; 12. Servo motor; 13. Drive rod; 14. Articulated block; 15. Transmission rod; 16. Lifting block; 17. Shaft rod one; 18. Shaft rod two; 19. Short rod; 20. Long rod; 21. Transmission gear; 22. Screw rod; 23. Ball nut; 24. Clamp; 25. Bevel gear one; 26. Mounting shaft; 27. Bevel gear two; 28. Drive gear; 29. ​​Controlled gear; 30. Reset plate; 31. Push rod; 32. Push plate; 33. Square groove; 34. Screw rod; 35. Pentagonal nut. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0033] Example 1, reference Figure 1-Figure 3 , which is the first embodiment of the present invention, provides a stamping die for automobile panels, including a base plate 1, a lower half mold 2 fixedly mounted on the upper end of the base plate 1, a plurality of guide posts 3 fixedly mounted on the lower half mold 2, an upper half mold 4 fixedly mounted on the plurality of guide posts 3, and an alignment unit mounted on the lower half mold 2, the alignment unit including an alignment component and a fixing component mounted on the lower half mold 2; the alignment component including two short slides 5 and two long slides 6 fixedly mounted on the lower half mold 2, sliding grooves 7 provided on the short slides 5 and the long slides 6, a plurality of sliding plates 8 slidably mounted on the corresponding sliding grooves 7, two circular holes provided on each sliding plate 8, a plurality of bearings (not shown) fixedly mounted in the plurality of circular holes, a plurality of threaded sleeves 9 fixedly mounted on the inner rings of a plurality of bearings, and a plurality of threaded sleeves 9 threadedly mounted on the plurality of A threaded rod 10 on the threaded sleeve 9, an alignment plate 11 fixedly mounted at one end of the two corresponding threaded rods 10, a servo motor 12 fixedly mounted in the base plate 1, a drive rod 13 fixedly mounted at the drive end of the servo motor 12, a threaded groove 1 provided on the drive rod 13, a hinge block 14 threadedly mounted on the drive rod 13, and a drive assembly installed between multiple sliding plates 8 and the drive rod 13; multiple sliding plates 8 are all slidably mounted in the corresponding sliding grooves 7, the lower end faces of the multiple sliding plates 8 are all T-shaped, the threaded sleeve 9 is cylindrical, and the inner ring is provided with a spiral groove matching the threaded rod 10, the end of the alignment plate 11 away from the corresponding sliding plate 8 is set to a chamfer, the interior of the lower half mold 2 is set to a cavity, the drive rod 13 and the hinge block 14 are located in the cavity, and a cavity is set in the sliding plate 8.

[0034] Reference Figure 3 and Figure 5The driving assembly includes two transmission rods 15 rotatably mounted on the seat plate 1, threaded grooves 2 are provided on the two transmission rods 15, lifting blocks 16 threadedly mounted on the two transmission rods 15, shaft rods 17 fixedly mounted at both ends of the hinge block 14 and on one side of the two lifting blocks 16, shaft rods 2 18 fixedly mounted at the lower end of each sliding plate 8, short rods 19 are rotatably mounted between the shaft rods 2 18 at the lower ends of the two sliding plates 8 on the two short slides 5 and the corresponding two shaft rods 17 on the hinge block 14, and shaft rods 18 at the lower ends of the two sliding plates 8 on the two long slides 6 are respectively rotated between the shaft rods 17 on the corresponding lifting blocks 16. A long rod 20 is installed for rotation, and a transmission gear 21 is fixedly installed on the driving rod 13 and the two transmission rods 15. The driving rod 13 is located in the middle of the two transmission rods 15. The transmission gears 21 on the two transmission rods 15 are meshed with the transmission gear 21 on the driving rod 13. The two transmission rods 15, the hinge block 14 and the lifting block 16 are all located in the cavity of the lower half mold 2. A plurality of mounting holes are opened on the seat plate 1. Screws 34 are threadedly installed in the plurality of mounting holes. A pentagonal nut 35 for fixing is threadedly installed on the screw 34. The length ratio between the driving rod 13 and the two transmission rods 15 is equal to the pitch ratio between the thread groove one and the thread groove two.

[0035] Specifically, the upper die 4 is located above the lower die 2, and it has a boss shape, which is used to apply pressure to the metal sheet and stamp it into a desired shape. The lower die 2 has a groove matching the upper die 4, which is used to support the metal sheet and shape it. The guide column 3 is located above the lower die 2 and the upper die 4, and its function is to ensure the precise positioning and movement between the upper die 4 and the lower die 2 to avoid offset and damage during the stamping process. The automobile sheet stamping die is mainly used for stamping rectangular metal sheets. The length of the two short slides 5 is less than the length of the two long slides 6, and sliding plates 8 are slidably installed on the corresponding sliding grooves 7. Alignment plates 11 are provided on the sliding plates 8. The alignment plates 11 correspond to the four sides of the metal sheet to be stamped respectively, and when multiple alignment plates 11 move the same distance at the same time, the multiple alignment plates 11 will cooperate with each other to push the metal sheet to the center position in the stamping cavity (the stamping cavity is the area between the upper die 4 and the lower die 2), and place it upright. The function of the driving component is: through the start of the servo motor 12, Each sliding plate 8 moves in the horizontal direction under the action of the corresponding short rod 19 and the long rod 20. When the sliding plate 8 moves to the maximum distance, the distance between the alignment plates 11 on the sliding plate 8 in the two long slides 6 is equal to the width of the metal plate, and the distance between the alignment plates 11 on the sliding plate 8 in the two short slides 5 is equal to the length of the metal plate. After the four alignment plates 11 move to the maximum position, the shape formed is equal to the shape of the metal plate, so that the metal plate is just between the four alignment plates 11. Because the corresponding two alignment plates 11 move the same distance, the metal plate is finally in the final position of the stamping cavity after being pushed by the alignment plates 11. Because the lengths of the sliding grooves 7 on the short slide 5 and the long slide 6 are different, the sliding distance of the sliding plate 8 on the short slide 5 should be smaller than the sliding distance of the sliding plate 8 on the long slide 6. Therefore, it is necessary to control the lifting block 16 to move a distance greater than the distance the hinge block 14 moves in the vertical direction, thereby achieving the sliding distances of different sliding plates 8 in the horizontal direction. The seat plate 1 is detachably mounted on the workbench, and the seat plate 1 can be quickly mounted and disassembled by means of the screw rod 34 and the pentagonal nut 35 .

[0036] During use, the metal sheet to be stamped is placed in the stamping chamber through mechanical transportation, and the servo motor 12 is turned on, so that the servo motor 12 rotates and drives the driving rod 13 to rotate through the driving end. The driving rod 13 rotates and the transmission gear 21 at its upper end drives the transmission gears 21 on both sides to rotate, thereby driving the transmission rods 15 on both sides to rotate synchronously. When the two transmission rods 15 and the driving rod 13 rotate, the two lifting blocks 16 move in the vertical direction on the transmission rod 15, and the hinge block 14 moves in the vertical direction on the driving rod 13. Because there is a gap between the driving rod 13 and the two transmission rods 15, The length ratio is equal to the pitch ratio between thread groove one and thread groove two, so that the hinge block 14 and the two lifting blocks 16 rise to the top at the same time, and the movement distance of the lifting block 16 is greater than the distance of the hinge block 14. When the lifting block 16 and the hinge block 14 move downward, the multiple sliding plates 8 move inward in the horizontal direction under the pulling force of the corresponding long rod 20 and the short rod 19, so that the multiple sliding plates 8 drive the alignment plates 11 at their upper ends to move synchronously. The multiple alignment plates 11 generate thrust on the four sides of the metal sheet, and cooperate with each other to place the metal sheet flatly in the center of the stamping cavity.

[0037] Example 2, reference Figure 6-Figure 10 , which is the second embodiment of the present invention, and this embodiment is different from the first embodiment in that: the fixed component includes two screw rods 22 rotatably mounted on both sides of a plurality of sliding plates 8, ball nuts 23 threadedly mounted on the upper and lower ends of each screw rod 22, and a clamping plate 24 fixedly mounted between the two corresponding ball nuts 23. The thread directions of the upper and lower ends of each screw rod 22 are opposite, and a transmission assembly is arranged between the screw rod 22 and the corresponding threaded rod 10. The transmission assembly includes a bevel gear 1 25 fixedly mounted on the threaded sleeve 9, a mounting shaft 26 rotatably mounted inside the sliding plate 8, a bevel gear 2 27 fixedly mounted on the upper end of the mounting shaft 26, a driving gear 28 fixedly mounted on the mounting shaft 26, and a controlled gear 29 fixedly mounted on the screw rod 22. The bevel gear 1 25 meshes with the bevel gear 2 27, and the driving gear 28 meshes with the controlled gear 29. The transmission assembly is arranged in the cavity of the sliding plate 8, and a reset element is installed on the seat plate 1. A plurality of quarter spherical grooves are opened on one side of each clamping plate 24, and a ball (not shown in the figure) is slidably mounted in each spherical groove.

[0038] Specifically, the function of the fixing component is: when the alignment component places the metal sheet flatly in the center of the stamping cavity, the multiple sliding plates 8 will continue to slide. At this time, the pressure between the multiple alignment plates 11 and the four sides of the metal sheet gradually increases. When the alignment plate 11 is subjected to a large reverse thrust, the fixing component will be triggered, so that the fixing component clamps and fixes the four sides of the metal sheet in the vertical direction to prevent the edge from warping when the metal sheet is stamped, thereby affecting the stamping quality. The function of the transmission component is: converting the reverse thrust received by the alignment plate 11 into a driving force, so that the clamping plate 24 moves in the vertical direction to clamp the four sides of the metal sheet. A ball bearing is embedded on the surface of each clamping plate 24 that contacts the metal sheet, so that when the clamping plate 24 is on the surface of the clamped metal sheet, it can still be reset, and the sliding plate 8 can still slide to the initial position.

[0039] During use, when the multiple alignment plates 11 adjust the metal sheet to the center of the stamping cavity, the multiple sliding plates 8 move, so that the reverse thrust on the alignment plate 11 gradually increases. Under the action of the reverse thrust, the alignment plate 11 drives the corresponding threaded rod 10 to slide in the threaded sleeve 9 in the sliding plate 8, so that the threaded sleeve 9 rotates. When the threaded sleeve 9 rotates, it drives the bevel gear 1 25 at its upper end to rotate. The rotation of the bevel gear 1 25 drives the installation shaft 26 to rotate through the bevel gear 27. The rotation of the installation shaft 26 drives the controlled gear 29 to rotate through the driving gear 28. The screw rod 22 rotates, thereby driving the corresponding screw rod 22 to rotate. The rotation of the screw rod 22 causes the ball nut 23 threadedly installed on its upper end to rotate and move in the vertical direction. Since the threads at the upper and lower ends of the screw rod 22 are in opposite directions, the ball nuts 23 at both ends of the screw rod 22 move in opposite directions. Then the ball nuts 23 at both ends drive the corresponding clamping plates 24 to approach each other, and clamp and fix the four sides of the metal sheet. When the alignment plate 11 moves to be in close contact with the sliding plate 8, the clamping plate 24 just fits tightly against the surface of the metal sheet, completing the clamping and fixation of the four sides of the metal sheet.

[0040] The remaining structures are the same as those of Example 1.

[0041] Example 3, reference Figure 6 as well as Fig. 9 , which is the third embodiment of the present invention. This embodiment is different from the second embodiment in that: the reset element includes a plurality of reset plates 30 fixedly mounted on the seat plate 1, two push rods 31 fixedly mounted on the plurality of reset plates 30, and a push plate 32 fixedly mounted on one end of the plurality of push rods 31 away from the corresponding reset plate 30, and each sliding plate 8 is provided with a square groove 33 that matches the corresponding push plate 32.

[0042] Specifically, in the initial state, the push plate 32 passes through the corresponding square slot 33 and is closely attached to one side of the corresponding alignment plate 11. The function of the reset element is: when the multiple sliding plates 8 are reset, the clamping plate 24 at the upper end can also be reset for the next use. When the sliding plate 8 is reset, the push plate 32 on the push rod 31 passes through the square slot 33 and contacts the alignment plate 11. When the alignment plate 11 continues to reset, the push plate 32 and the push rod 31 generate thrust with the alignment plate 11, so that the alignment plate 11 drives the corresponding threaded rod 10 to move along the thrust direction, thereby driving the threaded sleeve 9 to reverse, and driving the clamping plate 24 on the sliding plate 8 to slide in the vertical direction for reset, which is convenient for the next use of the mold. And there is no need for manual participation in the whole process, which effectively improves the stamping production efficiency and quality.

[0043] During use, when the stamping of the metal sheet is completed, the servo motor 12 is reversed. The servo motor 12 drives the driving rod 13 and the transmission rod 15 to reverse through the driving end, and then drives the hinge block 14 and the lifting block 16 to move upward, and in the process of upward movement, the short rod 19 and the long rod 20 will drive multiple sliding plates 8 to slide to the initial position. During the resetting of the sliding plate 8, the corresponding push plate 32 passes through the square groove 33 and contacts the alignment plate 11 and generates thrust. Under the action of the thrust, the alignment plate 11 drives the threaded rod 10 to move in the threaded sleeve 9 and drives the threaded sleeve 9 to reverse. The reversal of the threaded sleeve 9 drives the clamping plate 24 to reset on the screw rod 22 along the vertical direction. When the alignment plate 11 moves to the initial position, the clamping plate 24 moves to the initial position synchronously, completing the resetting of the mold, and at the same time contacting the clamping and fixing of the metal sheet, and moving the stamped metal sheet out of the mold, and stamping the next metal sheet.

[0044] The remaining structure is the same as that of Example 2.

[0045] Based on Examples 1-3, the working principle of the present invention is as follows:

[0046] The metal sheet to be stamped is placed into the stamping cavity through mechanical transportation, and the servo motor 12 is turned on, so that the servo motor 12 rotates and drives the driving rod 13 to rotate through the driving end. The driving rod 13 rotates and the transmission gear 21 at its upper end drives the transmission gears 21 on both sides to rotate, thereby driving the transmission rods 15 on both sides to rotate synchronously. When the two transmission rods 15 and the driving rod 13 rotate, the two lifting blocks 16 move in the vertical direction on the transmission rod 15, and the hinge block 14 moves in the vertical direction on the driving rod 13. Due to the length between the driving rod 13 and the two transmission rods 15, The ratio is equal to the pitch ratio between thread groove one and thread groove two, so that the hinge block 14 and the two lifting blocks 16 rise to the top at the same time, and the movement distance of the lifting block 16 is greater than the distance of the hinge block 14. When the lifting block 16 and the hinge block 14 move downward, the multiple sliding plates 8 move inward in the horizontal direction under the pulling force of the corresponding long rod 20 and the short rod 19, so that the multiple sliding plates 8 drive the alignment plates 11 at their upper ends to move synchronously. The multiple alignment plates 11 generate thrust on the four sides of the metal plate, and cooperate with each other to place the metal plate flatly in the center of the stamping cavity.

[0047] When the multiple alignment plates 11 adjust the metal sheet to the center of the punching cavity, the multiple sliding plates 8 move, so that the reverse thrust on the alignment plate 11 gradually increases. Under the action of the reverse thrust, the alignment plate 11 drives the corresponding threaded rod 10 to slide in the threaded sleeve 9 in the sliding plate 8, so that the threaded sleeve 9 rotates. When the threaded sleeve 9 rotates, it drives the bevel gear 1 25 at its upper end to rotate. The rotation of the bevel gear 1 25 drives the installation shaft 26 to rotate through the bevel gear 27. The rotation of the installation shaft 26 drives the controlled gear 29 to rotate through the driving gear 28, and the rotation of the driven gear 28 drives the controlled gear 29 to rotate. The corresponding screw rod 22 is driven to rotate, and the rotation of the screw rod 22 will cause the ball nut 23 installed with a thread on its upper end to rotate and move in the vertical direction. Since the threads at the upper and lower ends of the screw rod 22 are in opposite directions, the ball nuts 23 at both ends of the screw rod 22 move in opposite directions. Then the ball nuts 23 at both ends drive the corresponding clamping plates 24 to approach each other and clamp and fix the four sides of the metal plate. When the alignment plate 11 moves to be in close contact with the sliding plate 8, the clamping plate 24 just fits tightly against the surface of the metal plate, completing the clamping and fixation of the four sides of the metal plate.

[0048] When the stamping of the metal sheet is completed, the servo motor 12 is reversed. The servo motor 12 drives the driving rod 13 and the transmission rod 15 to reverse through the driving end, and then drives the hinge block 14 and the lifting block 16 to move upward. In the process of upward movement, the short rod 19 and the long rod 20 will drive multiple sliding plates 8 to slide to the initial position. During the resetting of the sliding plate 8, the corresponding push plate 32 passes through the square groove 33 and contacts the alignment plate 11 and generates thrust. Under the action of the thrust, the alignment plate 11 drives the threaded rod 10 to move in the threaded sleeve 9 and drives the threaded sleeve 9 to reverse. The reversal of the threaded sleeve 9 drives the clamping plate 24 to reset on the screw rod 22 along the vertical direction. When the alignment plate 11 moves to the initial position, the clamping plate 24 moves to the initial position synchronously, completing the resetting of the mold, and at the same time contacting the clamping and fixing of the metal sheet, and moving the stamped metal sheet out of the mold, and stamping the next metal sheet.

[0049] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A stamping die for an automobile panel, comprising a seat plate (1), a lower die (2) arranged at the upper end of the seat plate (1), a plurality of guide posts (3) arranged on the lower die (2), and an upper die (4) arranged on the plurality of guide posts (3), characterized in that: It also comprises an alignment unit arranged on the lower half mold (2), the alignment unit comprising an alignment component and a fixing component arranged on the lower half mold (2); The alignment component comprises two short slides (5) and two long slides (6) arranged on the lower half mold (2), sliding grooves (7) provided on the short slides (5) and the long slides (6), a plurality of sliding plates (8) slidably arranged on the corresponding sliding grooves (7), two round holes provided on each sliding plate (8), a plurality of bearings provided in the plurality of round holes, a plurality of threaded sleeves (9) provided on the inner rings of the plurality of bearings, a threaded rod (10) threadedly provided on the plurality of threaded sleeves (9), an alignment plate (11) provided at one end of the two corresponding threaded rods (10), a servo motor (12) provided in the base plate (1), a driving rod (13) provided at the driving end of the servo motor (12), a threaded groove 1 provided on the driving rod (13), a hinge block (14) threadedly installed on the driving rod (13), and a driving component provided between the plurality of sliding plates (8) and the driving rod (13); The plurality of sliding plates (8) are all slidably mounted in the corresponding sliding grooves (7), the lower end surfaces of the plurality of sliding plates (8) are all T-shaped, the threaded sleeve (9) is cylindrical, and the inner ring is provided with a spiral groove matching the threaded rod (10), the end of the alignment plate (11) away from the corresponding sliding plate (8) is arranged to be chamfered, the interior of the lower half mold (2) is arranged to be a cavity, the driving rod (13) and the hinge block (14) are located in the cavity, and a cavity is arranged in the sliding plate (8); The driving assembly comprises two transmission rods (15) arranged on the seat plate (1), two threaded grooves provided on the two transmission rods (15), a lifting block (16) threadedly mounted on the two transmission rods (15), a shaft rod (17) arranged at both ends of the hinge block (14) and one side of the two lifting blocks (16), a shaft rod (18) arranged at the lower end of each sliding plate (8), a short rod (19) arranged between the shaft rods (18) at the lower ends of the two sliding plates (8) on the two short sliding plates (5) and the two corresponding shaft rods (17) on the hinge block (14), and a shaft rod (19) arranged at the lower ends of the two sliding plates (8) on the two long sliding plates (14). 6), a long rod (20) is provided between the shaft rods (18) at the lower ends of the two sliding plates (8) on the corresponding lifting blocks (16), and a transmission gear (21) is provided on the driving rod (13) and the two transmission rods (15), the driving rod (13) is located in the middle of the two transmission rods (15), the transmission gears (21) on the two transmission rods (15) are meshed with the transmission gears (21) on the driving rod (13), and the two transmission rods (15), the hinge block (14) and the lifting block (16) are all located in the cavity of the lower half mold (2); The fixing component comprises two screw rods (22) arranged on both sides of the plurality of sliding plates (8), ball nuts (23) arranged at the upper and lower ends of each screw rod (22), and a clamping plate (24) arranged between the two corresponding ball nuts (23), the upper and lower ends of each screw rod (22) having threads in opposite directions, and a transmission assembly is arranged between the screw rod (22) and the corresponding threaded rod (10); The transmission assembly comprises a bevel gear 1 (25) arranged on the threaded sleeve (9), a mounting shaft (26) arranged inside the sliding plate (8), a bevel gear 2 (27) arranged at the upper end of the mounting shaft (26), a driving gear (28) arranged on the mounting shaft (26), and a controlled gear (29) arranged on the screw rod (22); the bevel gear 1 (25) meshes with the bevel gear 2 (27), and the driving gear (28) meshes with the controlled gear (29); the transmission assembly is arranged in a cavity of the sliding plate (8), and a reset element is installed on the base plate (1); The reset element comprises a plurality of reset plates (30) arranged on the seat plate (1), two push rods (31) arranged on the plurality of reset plates (30), and a push plate (32) arranged at one end of the plurality of push rods (31) away from the corresponding reset plate (30), and each of the sliding plates (8) is provided with a square groove (33) matching with the corresponding push plate (32); The length ratio between the driving rod (13) and the two transmission rods (15) is equal to the pitch ratio between the first thread groove and the second thread groove.

2. The automobile panel stamping die according to claim 1, characterized in that: The seat plate (1) is provided with a plurality of mounting holes, each of which has a screw rod (34) threadedly mounted therein, and a pentagonal nut (35) for fixing the screw rod (34) threadedly mounted thereon.

3. The automobile panel stamping die according to claim 2, characterized in that: A plurality of quarter-spherical grooves are formed on one side of each clamping plate (24), and a ball is slidably mounted in each spherical groove.

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