Automobile stamping die facilitating cleaning of inner cavity and operation method thereof

Abstract

The application discloses to related to the technical field of automobile stamping die, and concretely is a kind of automobile stamping die and its operating method facilitating the cleaning of inner cavity, including support table, the upper end of support table is equipped with rotary groove, the side surface of rotary groove is sequentially equipped with first annular limit groove and second annular limit groove from top to bottom, the bottom of rotary groove is fixedly connected with hopper, the bottom of rotary groove is equipped with through groove, the bottom of rotary groove inner cavity is fixedly connected with annular seat and stamping backing plate, including the following operating steps: step one: the upper end of support table is divided into four regions, four regions are arranged clockwise and are stamping area, blanking area, cleaning area and feeding area respectively, the beneficial effects of the application are: the upper end of support table is divided into four regions, four regions are arranged clockwise and are stamping area, blanking area, cleaning area and feeding area respectively, the lower part of concave frame is stamping area, the upper part of hopper is blanking area, four regions can be carried out simultaneously.

Description

Technical Field

[0001] This invention relates to the field of automotive stamping die technology, specifically to an automotive stamping die and its operating method that facilitates cleaning of the internal cavity. Background Technology

[0002] Stamping dies are special process equipment used in cold stamping to process materials (metal or non-metal) into parts or semi-finished products. They are called cold stamping dies. Stamping dies have a wide range of applications and play a crucial role in industry, manufacturing, and production, enabling the rapid manufacture of complex-shaped parts. Most automotive parts require stamping dies. After stamping, some automotive parts may have debris remaining in the inner cavity of the die. If this debris is not cleaned, it can cause misalignment or surface damage to the automotive parts during subsequent stamping, thus affecting their quality. Therefore, cleaning the inner cavity of the die is necessary during the stamping process of automotive parts. However, the cleaning process for existing automotive stamping dies is time-consuming and labor-intensive, often requiring the entire die to be disassembled, making the operation cumbersome and inefficient. Some automotive stamping die cleaning methods involve flipping the entire die over to clean the debris inside the die cavity. However, during normal use, the die remains suspended in the air, which results in poor load-bearing capacity during the stamping process. This not only easily damages the die but also causes it to shake during the stamping process, affecting the stamping accuracy of automotive parts. Summary of the Invention

[0003] The purpose of this invention is to provide an automotive stamping die and its operation method that facilitates cleaning of the internal cavity, so as to solve the problems mentioned above.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an automotive stamping die that facilitates cleaning of its inner cavity, comprising a support platform, a rotating groove at the upper end of the support platform, a first annular limiting groove and a second annular limiting groove sequentially formed on the side of the rotating groove from top to bottom, a hopper fixedly connected to the bottom of the rotating groove, a through groove formed at the bottom of the rotating groove, an annular seat and a stamping pad fixedly connected to the bottom of the inner cavity of the rotating groove, a shrinkage groove formed on the side of the support platform, and a concave frame fixedly connected to the upper end of the support platform;

[0005] An intermittent rotation mechanism is installed in the rotating groove. Four flipping transmission mechanisms are installed in a circular array on the intermittent rotation mechanism. A flipping joint is symmetrically rotatably connected to the side of the first annular limiting groove. The flipping joint is rotatably connected to the support platform through the output shaft of the servo motor. A stamping mechanism is installed on the concave frame. A positioning mechanism is installed in the shrinking groove. A cleaning mechanism is installed in the rotating groove.

[0006] Preferably, the intermittent rotation mechanism includes a rotating seat installed in a rotating groove, a rotating column disposed at the lower end of the rotating seat, and a plurality of fan-shaped toothed plates arranged in a circumferential array on the side of the rotating seat. The fan-shaped toothed plates are slidably connected to the second annular limiting groove. The upper end of the rotating seat has four rectangular grooves arranged in a circumferential array. The lower end of the rotating seat is in rotatable contact with the upper end of the annular seat. The rotating column is rotatably connected to the annular seat and the support platform respectively. The lower end of the rotating column is fixedly connected to the drive shaft of the stepper motor.

[0007] Preferably, the flipping transmission mechanism includes a concave flipping seat, which is rotatably installed in a rectangular groove. A lower mold base is installed on the inner side of the concave flipping seat, and rotating shafts are symmetrically welded to the sides of the concave flipping seat. One end of one of the rotating shafts is fixedly connected to a connector, and both the rotating shaft and the connector are rotatably connected to the rotating seat.

[0008] Preferably, the connector is a circular plate with a rectangular block protruding from its side, and the flip connector is a cylinder with a slot through one end. The rectangular block engages with the slot, and the rectangular block on the side of the connector is rotatably connected to the first annular limiting groove.

[0009] Preferably, the stamping mechanism includes a stamping telescopic cylinder mounted on a concave frame, an upper die base disposed at the lower end of the stamping telescopic cylinder, and an L-shaped extrusion plate disposed on the side of the upper die base. The lower end of the L-shaped extrusion plate is movably inserted into the support platform and extends into the shrinkage groove.

[0010] Preferably, the positioning mechanism includes a positioning toothed plate installed in the shrinkage groove, an extrusion block disposed on one side of the positioning toothed plate, a slider disposed on both sides of the positioning toothed plate, and a return spring disposed on the side of the slider. The positioning toothed plate is provided with grooves in sequence, the extrusion block is fixedly installed in the groove, and the second annular limiting groove is connected to the shrinkage groove.

[0011] Preferably, the cleaning mechanism includes two guide crossbars installed in the rotating groove, a disc disposed at the bottom of the rotating groove, a U-shaped frame and a T-shaped transmission plate sleeved on the guide crossbars, the U-shaped frame and the T-shaped transmission plate being fixedly connected, a plurality of cleaning brushes being fixedly connected at equal intervals at the upper end of the U-shaped frame, the lower end of the disc being rotatably connected to the support platform through a motor shaft, and a transmission rod being fixedly connected to the upper end of the disc, the upper part of the transmission rod being movably inserted into the T-shaped transmission plate.

[0012] Preferably, the U-shaped frame and the T-shaped transmission plate are slidably connected to the guide crossbar, and the upper end of the T-shaped transmission plate is provided with a transmission groove running from top to bottom, and the transmission rod is slidably connected to the transmission groove.

[0013] A method for operating automotive stamping dies that facilitates cleaning of their internal cavities includes the following steps:

[0014] Step 1: The upper part of the support platform is divided into four areas, which are arranged clockwise as the stamping area, unloading area, cleaning area and loading area. First, place the material plate on the lower die base in the loading area. The rotating seat in the intermittent rotating mechanism rotates 90 degrees, and the rotating seat drives the four lower die bases to rotate, so that the lower die base with the material plate is rotated to the bottom of the stamping mechanism.

[0015] Step 2: The inner rod of the stamping telescopic cylinder extends downward, driving the upper die base to move downward. Through the cooperation of the upper and lower die bases, the material plate is stamped. As the upper die base moves downward, it also drives the L-shaped extrusion plate downward. When the lower end of the L-shaped extrusion plate contacts the extrusion block, the L-shaped extrusion plate pushes the extrusion block to move. The extrusion block drives the positioning tooth plate to slide along the shrinkage groove. The positioning tooth plate drives the slider to squeeze the return spring, so that the positioning tooth plate and the fan-shaped tooth plate are engaged, thereby fixing the rotating seat and preventing the lower die base from shaking during the stamping of automotive stamped parts, ensuring the stamping accuracy. After stamping is completed, the stamping telescopic cylinder drives the upper die base to move upward. The upper die base drives the L-shaped extrusion plate to move upward, so that the lower end of the L-shaped extrusion plate separates from the extrusion block. Under the action of the return spring, the positioning tooth plate separates from the fan-shaped tooth plate. At this time, the rotating seat can rotate along the rotating groove.

[0016] Step 3: Rotate the rotating seat in the intermittent rotating mechanism by 90 degrees. At this time, the output shaft of the servo motor in the unloading area drives the flipping joint to rotate 180 degrees, the flipping joint drives the mating joint to rotate 180 degrees, the mating joint drives the concave flipping seat to rotate 180 degrees through the rotating shaft, and the concave flipping seat drives the lower die base to rotate 180 degrees, so that the automotive stamping parts on the lower die base slide down along the unloading hopper.

[0017] Step 4: Next, rotate the rotating seat in the intermittent rotating mechanism 90 degrees, so that the lower die seat after unloading can rotate to the top of the cleaning mechanism. The cleaning brush of the cleaning mechanism vibrates back and forth to clean the debris and other impurities on the lower die seat. Then, rotate the rotating seat in the intermittent rotating mechanism 90 degrees, so that the cleaned lower die seat can rotate to the loading area. Then, the output shaft of the servo motor in the loading area drives the flipping joint to rotate 180 degrees. The flipping joint drives the mating joint to rotate 180 degrees. The mating joint drives the concave flipping seat to rotate 180 degrees through the rotating shaft. The concave flipping seat drives the lower die seat to rotate 180 degrees, so that the cleaned lower die seat can be flipped over, and then the lower die seat can be loaded. All four areas can be operated simultaneously. When stamping a sheet of material, the previously stamped automotive stamping part can be unloaded, and debris on a lower die seat can be cleaned at the same time. At the same time, a lower die seat on the rotating seat can be loaded, so that the stamping mechanism can continue to stamp.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. The support platform is divided into four areas arranged clockwise: stamping area, unloading area, cleaning area, and loading area. The stamping area is below the concave frame, and the unloading area is above the unloading hopper. All four areas can operate simultaneously. While stamping a sheet metal, the previously stamped automotive stamping part can be unloaded. At the same time, debris on a lower die holder can be cleaned, and a lower die holder in the loading area can be loaded. This allows the stamping mechanism to continue stamping, saving time on loading, unloading, and debris cleaning, and greatly improving work efficiency.

[0020] 2. The intermittent rotation mechanism drives four flipping transmission mechanisms to rotate intermittently. Each time, the rotating seat drives the four flipping transmission mechanisms to rotate 90 degrees. The output shaft of the servo motor drives the flipping joint to rotate 180 degrees. The flipping joint drives the mating joint to rotate 180 degrees. The mating joint drives the concave flipping seat to rotate 180 degrees through the rotating shaft. The concave flipping seat drives the lower mold base to rotate 180 degrees, thereby causing the lower mold base to flip downward or upward, enabling material feeding or unloading.

[0021] 3. The intermittent rotation mechanism drives the downward-flipping lower mold base to rotate, so that the downward-flipping lower mold base rotates to the top of the cleaning mechanism. The cleaning brush of the cleaning mechanism vibrates back and forth to clean the debris and other impurities on the lower mold base. The debris cleaned by the cleaning brush falls down along the through groove for collection. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the automotive stamping die structure for easy cleaning of the internal cavity according to the present invention;

[0023] Figure 2 This is a front sectional view of the automotive stamping die structure for easy cleaning of the internal cavity according to the present invention;

[0024] Figure 3 This is a side sectional view of the automotive stamping die structure for easy cleaning of the internal cavity according to the present invention;

[0025] Figure 4 This is a first cross-sectional view of the support platform structure of the present invention;

[0026] Figure 5 This is a second cross-sectional view of the support platform structure of the present invention;

[0027] Figure 6 This is an exploded view of the automotive stamping die structure for easy cleaning of the internal cavity according to the present invention;

[0028] Figure 7 This is an exploded view of the rotating mechanism and concave flipping seat structure of the present invention;

[0029] Figure 8 This is an exploded view of the cleaning mechanism structure of the present invention.

[0030] In the diagram: 1. Support platform; 11. Rotating groove; 12. First annular limiting groove; 13. Second annular limiting groove; 14. Feed hopper; 15. Through groove; 16. Shrinkage groove; 17. Annular seat; 18. Stamping pad; 19. Concave frame; 2. Rotating seat; 21. Rectangular groove; 22. Rotating column; 23. Fan-shaped toothed plate; 3. Concave flipping seat; 31. Lower die seat; 32. Butt joint; 4. Flipping joint; 5. Stamping telescopic cylinder; 51. Upper die seat; 52. L-shaped extrusion plate; 6. Positioning toothed plate; 61. Extrusion block; 62. Slider; 63. Return spring; 7. Guide crossbar; 8. Return frame; 81. Cleaning brush; 82. T-shaped transmission plate; 9. Disc; 91. Transmission rod. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figures 1 to 8 The present invention provides a technical solution: an automotive stamping die that facilitates cleaning of the inner cavity, including a support platform 1, a rotating groove 11 is provided at the upper end of the support platform 1, a first annular limiting groove 12 and a second annular limiting groove 13 are provided on the side of the rotating groove 11 from top to bottom, a feeding hopper 14 is fixedly connected to the bottom of the rotating groove 11, a through groove 15 is provided at the bottom of the rotating groove 11, an annular seat 17 and a stamping pad 18 are fixedly connected to the bottom of the inner cavity of the rotating groove 11, a shrinkage groove 16 is provided on the side of the support platform 1, and a concave frame 19 is fixedly connected to the upper end of the support platform 1;

[0033] An intermittent rotation mechanism is installed in the rotating groove 11. Four flipping transmission mechanisms are installed in a circular array on the intermittent rotation mechanism. A flipping joint 4 is symmetrically rotatably connected to the side of the first annular limiting groove 12. The flipping joint 4 is rotatably connected to the support platform 1 through the output shaft of the servo motor. A stamping mechanism is installed on the concave frame 19. A positioning mechanism is installed in the shrinking groove 16. A cleaning mechanism is installed in the rotating groove 11.

[0034] The support platform 1 is divided into four areas arranged clockwise: a stamping area, a blanking area, a cleaning area, and a loading area. The stamping area is located below the concave frame 19, where a stamping mechanism is installed. The blanking area is located above the blanking hopper 14, and a cleaning mechanism is installed in the cleaning area. All four areas can operate simultaneously. While stamping a sheet metal, the previously stamped automotive stamping part can be blanked, and debris on a lower die holder 31 can be cleaned. At the same time, a lower die holder 31 in the loading area can be loaded, allowing the stamping mechanism to continue stamping. This saves time on loading, blanking, and debris cleaning, greatly improving work efficiency.

[0035] The intermittent rotation mechanism includes a rotating seat 2 installed in a rotating groove 11, a rotating column 22 disposed at the lower end of the rotating seat 2, and multiple fan-shaped toothed plates 23 arranged in a circumferential array on the side of the rotating seat 2. The fan-shaped toothed plates 23 are slidably connected to the second annular limiting groove 13. The rotating seat 2 is rotatably connected to the rotating groove 11. The upper end of the rotating column 22 is fixedly connected to the rotating seat 2. The fan-shaped toothed plates 23 are fixedly connected to the side of the rotating seat 2. The upper end of the rotating seat 2 is provided with four rectangular grooves 21 arranged in a circumferential array. The lower end of the rotating seat 2 is rotatably in contact with the upper end of the annular seat 17. The rotating column 22 is rotatably connected to the annular seat 17 and the support platform 1, respectively. The lower end of the rotating column 22 is fixedly connected to the drive shaft of a stepper motor. The drive shaft of the stepper motor drives the rotating column 22 to rotate intermittently. Each time the rotating column 22 rotates 90 degrees, it stops for a period of time and then continues to rotate 90 degrees. This process is repeated, and the rotating column 22 drives the rotating seat 2 to rotate intermittently along the rotating groove 11.

[0036] The flipping transmission mechanism includes a concave flipping seat 3, which is rotatably installed in a rectangular groove 21. A lower die seat 31 is detachably installed on the inner side of the concave flipping seat 3, allowing the lower die seat 31 to be replaced as needed to perform stamping operations on different automotive stamping parts. It has a wide range of applications. The sides of the concave flipping seat 3 are symmetrically welded with rotating shafts, one end of which is fixedly connected to a connector 32. Both the rotating shaft and the connector 32 are rotatably connected to the rotating seat 2. When the connector 32 rotates, it drives the rotating shaft to rotate, which drives the concave flipping seat 3 to flip along the rectangular groove 21. The concave flipping seat 3 drives the lower die seat 31 to flip, thereby enabling the automotive stamping parts on the lower die seat 31 to be unloaded. The automotive stamping parts slide down along the unloading hopper 14, and some debris also falls off automatically.

[0037] The connector 32 is a circular plate with a rectangular block protruding from its side. The flip connector 4 is a cylinder with a slot through one end. The rectangular block engages with the slot. The rectangular block on the side of the connector 32 is rotatably connected to the first annular limiting groove 12. The intermittent rotation mechanism drives the flip transmission mechanism to rotate intermittently, causing the connector 32 to rotate intermittently. This causes the four connectors 32 on the side of the rotating seat 2 to be sequentially engaged into the flip connector 4. The output shaft of the servo motor is fixedly connected to the flip connector 4 and rotatably connected to the support platform 1. The output shaft of the servo motor drives the flip connector 4 to rotate 180 degrees, and the flip connector 4 drives the connector 32 to rotate 180 degrees.

[0038] The stamping mechanism includes a stamping telescopic cylinder 5 mounted on a concave frame 19, an upper die base 51 located at the lower end of the stamping telescopic cylinder 5, and an L-shaped extrusion plate 52 located on the side of the upper die base 51. The lower end of the L-shaped extrusion plate 52 is movably inserted into the support platform 1 and extends into the shrinkage groove 16. The stamping telescopic cylinder 5 is fixedly connected to the concave frame 19, and the lower end of the stamping telescopic cylinder 5 is fixedly connected to the upper die base 51. The L-shaped extrusion plate 52 is fixedly connected to one end of the upper die base 51. The stamping pad 18 is located directly below the upper die base 51 and extends downward through the stamping telescopic cylinder 5. The stamping telescopic cylinder 5 drives the upper die base 51 to move downward, thereby stamping the material plate.

[0039] The positioning mechanism includes a positioning toothed plate 6 installed in the shrinkage groove 16, an extrusion block 61 disposed on one side of the positioning toothed plate 6, sliders 62 disposed on both sides of the positioning toothed plate 6, and a return spring 63 disposed on the side of the slider 62. The positioning toothed plate 6 has grooves in sequence, and the extrusion block 61 is fixedly installed in the grooves. The second annular limiting groove 13 is connected to the shrinkage groove 16. When the upper die base 51 of the stamping mechanism moves downward, the upper die base 51 drives the L-shaped extrusion plate 52 to move downward. When the lower end of the L-shaped extrusion plate 52 contacts the extrusion block 61, the L-shaped extrusion plate 52 pushes the extrusion block 61 to move, and the extrusion block 61 drives the fixed plate 62 to move downward. Positioning tooth plate 6 slides along shrinkage groove 16. Positioning tooth plate 6 drives slider 62 to squeeze return spring 63, so that positioning tooth plate 6 engages with sector tooth plate 23, thereby fixing rotating seat 2 and preventing lower die base 31 from shaking during the stamping of automotive stamping parts, ensuring stamping accuracy. When upper die base 51 of stamping mechanism moves upward, upper die base 51 drives L-shaped extrusion plate 52 to move upward, so that the lower end of L-shaped extrusion plate 52 separates from extrusion block 61. Under the action of return spring 63, positioning tooth plate 6 separates from sector tooth plate 23. At this time, rotating seat 2 can rotate as needed.

[0040] The cleaning mechanism includes two guide bars 7 installed in the rotating groove 11, a disc 9 set at the bottom of the rotating groove 11, a U-shaped frame 8 and a T-shaped transmission plate 82 sleeved on the guide bars 7, the U-shaped frame 8 and the T-shaped transmission plate 82 are fixedly connected, a plurality of cleaning brushes 81 are fixedly connected at equal intervals at the upper end of the U-shaped frame 8, the lower end of the disc 9 is rotatably connected to the support platform 1 through the motor shaft, the upper end of the disc 9 is fixedly connected to the transmission rod 91, the upper part of the transmission rod 91 is movably inserted into the T-shaped transmission plate 82, the cleaning brushes 81 are set directly above the through groove 15, the debris cleaned by the cleaning brushes 81 falls down along the through groove 15 for collection, the lower end of the disc 9 is fixedly connected to the motor shaft, and the disc 9 is in rotatable contact with the bottom of the rotating groove 11.

[0041] The U-shaped frame 8 and the T-shaped transmission plate 82 are slidably connected to the guide crossbar 7. The upper end of the T-shaped transmission plate 82 has a transmission groove running from top to bottom. The transmission rod 91 is slidably connected to the transmission groove. The sides of both the U-shaped frame 8 and the T-shaped transmission plate 82 have symmetrical guide grooves. The guide crossbar 7 runs through the guide groove and is slidably connected to the guide groove. The motor shaft drives the disc 9 to rotate, which in turn drives the transmission rod 91 to rotate. The transmission rod 91 slides along the transmission groove of the T-shaped transmission plate 82. At the same time, the transmission rod 91 drives the T-shaped transmission plate 82 to slide back and forth along the guide crossbar 7. The T-shaped transmission plate 82 drives the U-shaped frame 8 to slide back and forth along the guide crossbar 7. The U-shaped frame 8 drives the cleaning brush 81 to move back and forth, causing the cleaning brush 81 to slide back and forth along the lower mold base 31, thereby cleaning debris, dust, and other impurities on the lower mold base 31.

[0042] A method for operating automotive stamping dies that facilitates cleaning of their internal cavities includes the following steps:

[0043] Step 1: The upper part of the support platform 1 is divided into four areas, which are arranged clockwise as the stamping area, unloading area, cleaning area and loading area. First, place the material plate on the lower die base 31 in the loading area. Then, rotate the rotating seat 2 in the intermittent rotating mechanism by 90 degrees. The rotating seat 2 drives the four lower die bases 31 to rotate, so that the lower die base 31 with the material plate is rotated to the bottom of the stamping mechanism.

[0044] Step Two: The inner rod of the stamping telescopic cylinder 5 extends downward, driving the upper die base 51 to move downward. Through the cooperation of the upper die base 51 and the lower die base 31, the material plate is stamped. Simultaneously, the downward movement of the upper die base 51 drives the L-shaped extrusion plate 52 downward. When the lower end of the L-shaped extrusion plate 52 contacts the extrusion block 61, the L-shaped extrusion plate 52 pushes the extrusion block 61 to move. The extrusion block 61 drives the positioning toothed plate 6 to slide along the shrinkage groove 16. The positioning toothed plate 6 drives the slider 62 to compress the return spring 63, thus stabilizing the positioning... The toothed plate 6 engages with the sector toothed plate 23 to fix the rotating seat 2, preventing the lower die base 31 from shaking during the stamping of automotive stamping parts and ensuring stamping accuracy. After stamping, the upper die base 51 is moved upward by the stamping telescopic cylinder 5, and the upper die base 51 moves the L-shaped extrusion plate 52 upward, so that the lower end of the L-shaped extrusion plate 52 is separated from the extrusion block 61. Under the action of the return spring 63, the positioning toothed plate 6 is separated from the sector toothed plate 23. At this time, the rotating seat 2 can rotate along the rotating groove 11.

[0045] Step 3: Rotate the rotating seat 2 in the intermittent rotating mechanism by 90 degrees. At this time, the output shaft of the servo motor in the unloading area drives the flipping joint 4 to rotate 180 degrees. The flipping joint 4 drives the mating joint 32 to rotate 180 degrees. The mating joint 32 drives the concave flipping seat 3 to rotate 180 degrees through the rotating shaft. The concave flipping seat 3 drives the lower die seat 31 to rotate 180 degrees, so that the automotive stamping parts on the lower die seat 31 slide down along the unloading hopper 14.

[0046] Step 4: Rotate the rotating seat 2 in the intermittent rotation mechanism by 90 degrees, so that the lower die seat 31 after unloading rotates to the top of the cleaning mechanism. The cleaning brush 81 of the cleaning mechanism reciprocates to clean debris and other impurities from the lower die seat 31. Then, rotate the rotating seat 2 in the intermittent rotation mechanism by 90 degrees, so that the cleaned lower die seat 31 rotates to the loading area. The output shaft of the servo motor in the loading area then drives the flipping joint 4 to rotate 180 degrees. The flipping joint 4 drives the mating joint 32 to rotate 180 degrees. The concave flipping seat 3 is rotated 180 degrees by the rotating shaft, and the concave flipping seat 3 drives the lower die seat 31 to rotate 180 degrees, thereby flipping the cleaned lower die seat 31 over, so that the lower die seat 31 can be loaded. The four areas can be operated at the same time. When stamping a sheet metal, the previously stamped automotive stamping part can be unloaded, and at the same time, the debris on a lower die seat 31 can be cleaned. At the same time, a lower die seat 31 on the rotating seat 2 can be loaded, so that the stamping mechanism can continue to stamp.

[0047] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automotive stamping die that facilitates cleaning of its internal cavity, comprising a support platform (1), characterized in that: The upper end of the support platform (1) is provided with a rotating groove (11). The side of the rotating groove (11) is provided with a first annular limiting groove (12) and a second annular limiting groove (13) from top to bottom. The bottom of the rotating groove (11) is fixedly connected with a feeding hopper (14). The bottom of the rotating groove (11) is provided with a through groove (15). The bottom of the inner cavity of the rotating groove (11) is fixedly connected with an annular seat (17) and a stamping pad (18). The side of the support platform (1) is provided with a shrinkage groove (16). The upper end of the support platform (1) is fixedly connected with a concave frame (19). An intermittent rotation mechanism is installed in the rotating groove (11). Four flipping transmission mechanisms are installed in a circular array on the intermittent rotation mechanism. A flipping joint (4) is symmetrically rotated on the side of the first annular limiting groove (12). The flipping joint (4) is rotatably connected to the support platform (1) through the output shaft of the servo motor. A stamping mechanism is installed on the concave frame (19). A positioning mechanism is installed in the shrinking groove (16). A cleaning mechanism is installed in the rotating groove (11). The positioning mechanism includes a positioning tooth plate (6) installed in the shrinkage groove (16), an extrusion block (61) disposed on one side of the positioning tooth plate (6), a slider (62) disposed on both sides of the positioning tooth plate (6), and a return spring (63) disposed on the side of the slider (62). The positioning tooth plate (6) is provided with grooves in sequence, and the extrusion block (61) is fixedly installed in the groove. The second annular limiting groove (13) is connected to the shrinkage groove (16). The cleaning mechanism includes two guide crossbars (7) installed in the rotating groove (11) and a disc (9) set at the bottom of the rotating groove (11). A loop frame (8) and a T-shaped transmission plate (82) are sleeved on the guide crossbars (7). The loop frame (8) is fixedly connected to the T-shaped transmission plate (82). Multiple cleaning brushes (81) are fixedly connected at equal intervals at the upper end of the loop frame (8). The lower end of the disc (9) is rotatably connected to the support platform (1) through a motor shaft. A transmission rod (91) is fixedly connected to the upper end of the disc (9). The upper part of the transmission rod (91) is movably inserted into the T-shaped transmission plate (82).

2. The automotive stamping die for easy cleaning of the internal cavity according to claim 1, characterized in that: The intermittent rotation mechanism includes a rotating seat (2) installed in a rotating groove (11), a rotating column (22) set at the lower end of the rotating seat (2), and a plurality of fan-shaped toothed plates (23) arranged in a circumferential array on the side of the rotating seat (2). The fan-shaped toothed plates (23) are slidably connected to the second annular limiting groove (13). The upper end of the rotating seat (2) is provided with four rectangular grooves (21) arranged in a circumferential array. The lower end of the rotating seat (2) is in rotatable contact with the upper end of the annular seat (17). The rotating column (22) is rotatably connected to the annular seat (17) and the support platform (1) respectively. The lower end of the rotating column (22) is fixedly connected to the drive shaft of the stepper motor.

3. The automotive stamping die for easy cleaning of the internal cavity according to claim 2, characterized in that: The flipping transmission mechanism includes a concave flipping seat (3), which is rotatably installed in a rectangular groove (21). A lower mold seat (31) is installed on the inner side of the concave flipping seat (3). Rotary shafts are symmetrically welded on the side of the concave flipping seat (3). One end of one of the rotating shafts is fixedly connected to a connector (32). Both the rotating shaft and the connector (32) are rotatably connected to the rotating seat (2).

4. The automotive stamping die for easy cleaning of the internal cavity according to claim 3, characterized in that: The connector (32) is a circular plate with a rectangular block protruding from its side. The flip connector (4) is a cylinder with a slot through one end. The rectangular block is engaged with the slot. The rectangular block on the side of the connector (32) is rotatably connected to the first annular limiting groove (12).

5. The automotive stamping die for easy cleaning of the internal cavity according to claim 4, characterized in that: The stamping mechanism includes a stamping telescopic cylinder (5) mounted on a concave frame (19), an upper die base (51) located at the lower end of the stamping telescopic cylinder (5), and an L-shaped extrusion plate (52) located on the side of the upper die base (51). The lower end of the L-shaped extrusion plate (52) is movably inserted into the support platform (1) and extends into the shrinkage groove (16).

6. The automotive stamping die for easy cleaning of the internal cavity according to claim 5, characterized in that: The U-shaped frame (8) and the T-shaped transmission plate (82) are slidably connected to the guide crossbar (7). The upper end of the T-shaped transmission plate (82) is provided with a transmission groove running from top to bottom. The transmission rod (91) is slidably connected to the transmission groove.

7. A method for operating an automotive stamping die that facilitates cleaning of its internal cavity, based on claim 6, characterized in that: The following steps are included: Step 1: The upper part of the support platform (1) is divided into four areas, which are arranged clockwise as stamping area, unloading area, cleaning area and loading area. First, place the material plate on the lower die base (31) in the loading area. Rotate the rotating seat (2) in the intermittent rotating mechanism by 90 degrees. The rotating seat (2) drives the four lower die bases (31) to rotate, so that the lower die base (31) with the material plate is rotated to the bottom of the stamping mechanism. Step 2: The inner rod of the stamping telescopic cylinder (5) extends downward, driving the upper die holder (51) to move downward. Through the cooperation of the upper die holder (51) and the lower die holder (31), the material plate is stamped. As the upper die holder (51) moves downward, it drives the L-shaped extrusion plate (52) to move downward. When the lower end of the L-shaped extrusion plate (52) contacts the extrusion block (61), the L-shaped extrusion plate (52) pushes the extrusion block (61) to move. The extrusion block (61) drives the positioning tooth plate (6) to slide along the shrinkage groove (16). The positioning tooth plate (6) drives the slider (62) to squeeze the return spring (63), so that... The positioning tooth plate (6) engages with the fan-shaped tooth plate (23) to fix the rotating seat (2), preventing the lower die base (31) from shaking during the stamping of automotive stamping parts, thus ensuring the stamping accuracy. After stamping, the upper die base (51) is moved upward by the stamping telescopic cylinder (5), and the upper die base (51) moves the L-shaped extrusion plate (52) upward, so that the lower end of the L-shaped extrusion plate (52) is separated from the extrusion block (61). Under the action of the return spring (63), the positioning tooth plate (6) is separated from the fan-shaped tooth plate (23), and at this time the rotating seat (2) can rotate along the rotating groove (11). Step 3: Rotate the rotating seat (2) in the intermittent rotating mechanism by 90 degrees. At this time, the output shaft of the servo motor in the unloading area drives the flip joint (4) to rotate 180 degrees. The flip joint (4) drives the mating joint (32) to rotate 180 degrees. The mating joint (32) drives the concave flip seat (3) to rotate 180 degrees through the rotating shaft. The concave flip seat (3) drives the lower die seat (31) to rotate 180 degrees, so that the automotive stamping parts on the lower die seat (31) slide down along the unloading hopper (14). Step 4: Rotate the rotating seat (2) in the intermittent rotating mechanism by 90 degrees, so that the lower die seat (31) after unloading rotates to the top of the cleaning mechanism. The cleaning brush (81) of the cleaning mechanism vibrates back and forth to clean the debris on the lower die seat (31). Then rotate the rotating seat (2) in the intermittent rotating mechanism by 90 degrees, so that the cleaned lower die seat (31) rotates to the loading area. Then, the output shaft of the servo motor in the loading area drives the flip joint (4) to rotate 180 degrees. The flip joint (4) drives the mating joint (32) to rotate 180 degrees. The mating joint (32) rotates 180 degrees. The concave flipping seat (3) is rotated 180 degrees by the rotating shaft, and the concave flipping seat (3) drives the lower die seat (31) to rotate 180 degrees, thereby flipping the cleaned lower die seat (31) over, so that the lower die seat (31) can be loaded. The four areas can be carried out at the same time. When stamping a sheet, the previous stamped automotive stamping part can be unloaded, and the debris on a lower die seat (31) can be cleaned. At the same time, a lower die seat (31) on the rotating seat (2) can be loaded, so that the stamping mechanism can continue to stamp.

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