Stamping die capable of automatically removing burrs

Abstract

The invention relates to the technical field of stamping dies, in particular to an automatic deburring stamping die. Comprising an upper die; the lower die is arranged under the upper die; the mounting frame is connected into the lower die; the first sliding frame is slidably connected into the mounting frame; and the second sliding frame is slidably connected to the interior of the mounting frame, the second sliding frame is in sliding contact with the first sliding frame, and cavities and sliding grooves are symmetrically formed in the second sliding frame and the first sliding frame. The crankshaft is driven by the first driving motor, the first sliding frame and the second sliding frame can be driven to do reciprocating motion, so that the grinding plate connected to the first sliding frame and the second sliding frame can automatically grind and deburr the side face of a punched and formed workpiece, and meanwhile, the chamfering assembly can grind and deburr the edge of a round hole in the workpiece; in this way, the deburring work can be automatically completed in the discharging process of the workpieces, manual or special equipment does not need to be additionally arranged, the whole production period is shortened, and the overall production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of stamping dies, in particular to an automatic deburring stamping die. Background Art

[0002] In modern manufacturing, stamping technology, as an efficient and precise processing method, is widely used in many fields such as automobiles, electronics, and home appliances. Through the stamping process, metal sheets can be quickly processed into the required shape and size to meet the needs of different industries for parts.

[0003] However, in the actual production process, after the stamping die stamps the workpiece, burrs often appear on the shear surface of the workpiece. These burrs not only affect the appearance quality of the product, but more importantly, they may reduce the functionality and safety of the parts, especially in application scenarios with high precision requirements. At present, there are usually two ways to deal with the burrs generated on the workpiece after stamping: manual removal and the use of special deburring equipment. Although manual burr removal is flexible and can be adjusted for different burr situations, this method is inefficient and highly dependent on the operator's experience and technical level, and is prone to introducing errors. While the use of special deburring equipment can improve efficiency to a certain extent and reduce errors caused by human factors, it requires additional investment costs and increases the complexity of the production line. In addition, whether it is manual or special equipment to remove burrs, it will inevitably extend the entire production cycle and reduce work efficiency. Summary of the Invention

[0004] In view of this, the present invention provides a stamping die with automatic deburring, which can overcome the shortcomings of existing stamping dies that burrs will be generated on the shear surface of the workpiece during use, and additional manpower or special equipment is required to remove the burrs, thereby extending the entire production cycle and reducing work efficiency.

[0005] The technical implementation scheme of the present invention is: a stamping die for automatic deburring, comprising: an upper die; a lower die, arranged directly below the upper die; a mounting frame, connected to the lower die; a first sliding frame, slidably connected to the inside of the mounting frame; a second sliding frame, slidably connected to the inside of the mounting frame, the second sliding frame slidingly contacts the first sliding frame, and the second sliding frame and the first sliding frame are symmetrically provided with cavities and sliding grooves; a sliding plate, slidably connected to the cavity; a return spring, arranged in the cavity, and the two ends of the return spring are respectively connected to the side surface of the sliding plate and the inner wall of the cavity; a grinding plate, connected to the side of the sliding plate away from the return spring; a driving assembly, arranged in the lower die, for driving the second sliding frame and the first sliding frame to move; a fitting assembly, arranged in the lower die, for driving the grinding plate to move to fit with the outer side of the workpiece; a discharging assembly, arranged in the lower die, for discharging the stamped workpiece.

[0006] Optionally, the driving assembly includes: a first driving motor, symmetrically installed in the lower mold; a crankshaft, connected to the output shaft of the first driving motor, and the crankshaft passes through the sliding grooves on the first sliding frame and the second sliding frame in sequence.

[0007] Optionally, the fitting assembly includes: a first electric push rod, installed in the lower mold; a fixed cylinder, connected in the lower mold, and the fixed cylinder is located directly above the first electric push rod; a diversion hose, connected to the top of the fixed cylinder and kept connected, and the ends of the diversion hose are respectively connected to the first sliding frame and the second sliding frame, and kept connected with each cavity; a piston, slidably connected in the fixed cylinder, and the bottom of the piston is connected to the telescopic rod of the first electric push rod.

[0008] Optionally, the discharge assembly includes: a second electric push rod installed in the upper mold; a sliding frame slidably connected in the upper mold, and the sliding frame is connected to the telescopic rod of the second electric push rod; a lifting frame slidably connected in the lower mold; a connecting spring, the two ends of which are respectively connected to the lifting frame and the lower mold; a discharge frame connected in the lower mold; a first control switch installed in the lower mold; a pushing mechanism arranged in the lower mold, for pushing the workpiece on the lifting frame into the discharge frame for discharge.

[0009] Optionally, the pushing mechanism includes: a second control switch installed in the lower mold; a third electric push rod installed in the lower mold; a push frame slidably connected to the lower mold, and the push frame is connected to the telescopic rod of the third electric push rod.

[0010] Optionally, a chamfering assembly is also included, which includes: a second drive motor installed in the sliding frame; a connecting rod, rotatably connected in the sliding frame, and the upper end of the connecting rod is connected to the output shaft of the second drive motor; a first grinding head, connected to the lower end of the connecting rod; a square rod, connected to the bottom of the first grinding head; a circular plate, slidably connected in the lifting frame; a first spring, the two ends of which are respectively connected to the circular plate and the lifting frame; a second grinding head, rotatably connected to the top of the circular plate, and a square hole matching the square rod is opened on the top of the second grinding head.

[0011] Optionally, it further includes: an elastic membrane connecting the polishing plate and the mounting frame.

[0012] Optionally, it also includes: a guide rod, symmetrically slidably connected to the bottom of the upper mold; a push plate, connected to the bottom of the guide rod; a second spring, wound around the outside of the guide rod, and the two ends of the second spring are respectively connected to the push plate and the upper mold.

[0013] The present invention has the following advantages: 1. The present invention drives the crankshaft through the first drive motor, which can drive the first sliding frame and the second sliding frame to move back and forth, so that the grinding plate connected thereto can automatically grind and remove burrs on the side of the workpiece after stamping. At the same time, the chamfering component can be used to grind and remove burrs on the edge of the circular hole on the workpiece. In this way, the deburring work can be automatically completed during the discharge process of the workpiece without the need for additional manpower or special equipment, thereby shortening the entire production cycle and improving overall production efficiency.

[0014] 2 The present invention can automatically discharge the workpiece after stamping and deburring through the function of the discharge assembly, simplifying the operation process and ensuring that each workpiece can accurately complete the entire process from processing to discharge, reducing labor costs and the possibility of operational errors. At the same time, the elastic membrane can prevent debris generated during deburring of the workpiece from entering the installation frame, and the push plate can prevent the raw material from being stuck on the upper die, ensuring that the upper die can be smoothly separated from the raw material after the stamping work is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0016] Figure 2 This is a schematic diagram of the installation of the first sliding frame and the second sliding frame of the present invention.

[0017] Figure 3 This is a schematic diagram of the separation structure of the first sliding frame and the second sliding frame of the present invention.

[0018] Figure 4 This is a schematic diagram of the installation of the sliding plate, return spring and polishing plate of the present invention.

[0019] Figure 5 It is a schematic diagram of the cooperation between the crankshaft and the slide groove of the present invention.

[0020] Figure 6 Schematic diagram of the installation of the bonding component of the present invention.

[0021] Figure 7 Schematic diagram of the specific structure of the bonding component of the present invention.

[0022] Figure 8 Schematic diagram of the installation of the discharge assembly of the present invention.

[0023] Figure 9 This is a schematic diagram of the installation of the pushing mechanism of the present invention.

[0024] Figure 10 Schematic diagram of the installation of the chamfering assembly of the present invention.

[0025] Figure 11 Schematic diagram of the installation of the elastic membrane of the present invention.

[0026] Figure 12 This is a schematic diagram of the installation of the guide rod, push plate and second spring of the present invention.

[0027] Figure 13 Schematic diagram of the raw materials and workpieces of the present invention.

[0028] The meaning of the reference numerals in the figure: 001-raw material, 002-workpiece, 003-circular hole, 1-upper die, 2-lower die, 3-mounting frame, 4-first sliding frame, 5-second sliding frame, 6-cavity, 7-slide groove, 8-slide plate, 9-return spring, 10-grinding plate, 11-first drive motor, 12-crankshaft, 13-first electric push rod, 14-fixed cylinder, 15-diverter hose, 16-piston, 17-second electric push rod, 18-slide Moving frame, 19-lifting frame, 20-connecting spring, 21-discharging frame, 22-first control switch, 23-second control switch, 24-third electric push rod, 25-push frame, 26-second drive motor, 27-connecting rod, 28-first grinding head, 29-square rod, 30-round plate, 3001-first spring, 31-second grinding head, 3101-square hole, 32-elastic membrane, 33-guide rod, 34-push plate, 35-second spring. DETAILED DESCRIPTION

[0029] Example: A stamping die for automatic deburring, the stamping die is equipped with a control box for controlling the operation of various electrical components on the stamping die, such as Figure 13 As shown, when the stamping die is in use, it can stamp out a square workpiece 002 on the raw material 001, and a round hole 003 is opened in the middle of the workpiece 002; Figures 1-9As shown, it includes an upper mold 1, a lower mold 2, a mounting frame 3, a first sliding frame 4, a second sliding frame 5, a sliding plate 8, a return spring 9, a grinding plate 10, a driving assembly, a fitting assembly and a discharging assembly. The lower mold 2 is arranged just below the upper mold 1, and the mounting frame 3 is connected to the upper inner side of the lower mold 2. The first sliding frame 4 and the second sliding frame 5 are slidably connected inside the mounting frame 3. The sliding directions of the first sliding frame 4 and the second sliding frame 5 are perpendicular to each other, and the second sliding frame 5 is in sliding contact with the first sliding frame 4. The first sliding frame 4 is symmetrically provided with cavities 6 in front and back, and the second sliding frame 5 is symmetrically provided with cavities 6 in left and right. The number of cavities 6 is four, and the first The sliding frame 4 and the second sliding frame 5 are both symmetrically provided with sliding grooves 7, and there are four sliding grooves 7. A sliding plate 8 is slidably connected in each cavity 6. A return spring 9 is provided in each cavity 6, and the two ends of the return spring 9 are respectively connected to the side of the sliding plate 8 and the inner wall of the cavity 6. The sides of the four sliding plates 8 away from the return spring 9 are connected to a grinding plate 10. A driving component for driving the second sliding frame 5 and the first sliding frame 4 to move is provided in the lower mold 2. A fitting component for driving the grinding plate 10 to move to fit with the outer side of the workpiece 002 is provided in the lower mold 2. A discharging component for discharging the stamped workpiece 002 is also provided in the lower mold 2.

[0030] like Figure 1 and Figure 5 As shown, the drive assembly includes a first drive motor 11 and a crankshaft 12. The first drive motor 11 is symmetrically installed on the left and right sides of the upper front side of the lower mold 2. The output shafts of the two first drive motors 11 are connected to the crankshafts 12, and the two crankshafts 12 pass through the slide grooves 7 on the left and right sides respectively.

[0031] like Figure 6 and Figure 7 As shown, the fitting assembly includes a first electric push rod 13, a fixed cylinder 14, a diverter hose 15 and a piston 16. The first electric push rod 13 is installed on the lower right rear side of the lower mold 2, and the lower right rear side of the lower mold 2 is connected to the fixed cylinder 14, and the fixed cylinder 14 is located directly above the first electric push rod 13. The top of the fixed cylinder 14 is connected to the diverter hose 15 and remains connected. The other four ends of the diverter hose 15 are respectively connected to the four cavities 6 and remain connected. A piston 16 is slidably connected in the fixed cylinder 14, and the bottom of the piston 16 is connected to the telescopic rod of the first electric push rod 13.

[0032] like Figure 8 and Figure 9As shown, the discharging assembly includes a second electric push rod 17, a sliding frame 18, a lifting frame 19, a connecting spring 20, a discharging frame 21, a first control switch 22 and a pushing mechanism. The second electric push rod 17 is installed on the upper side of the upper mold 1, and the sliding frame 18 is slidably connected to the lower side of the upper mold 1, and the top of the sliding frame 18 is connected to the telescopic rod of the second electric push rod 17. The lower mold 2 is slidably connected to the lifting frame 19, and the lifting frame 19 is located directly below the sliding frame 18. Two connecting springs 20 are connected between the lifting frame 19 and the lower mold 2. The lower front side of the lower mold 2 is connected to the discharging frame 21. The inner bottom of the discharging frame 21 is an inverted "V" shape, that is, the left and right sides of the inner bottom of the discharging frame 21 are both inclined surfaces, and the discharging frame 21 The left and right sides are both open in design. A first control switch 22 is installed on the right side of the inner wall of the lower mold 2. When the lifting frame 19 moves downward, the right side of the lifting frame 19 will press the first control switch 22. A pushing mechanism is provided in the lower mold 2 for pushing the workpiece 002 on the lifting frame 19 into the discharge frame 21 for discharge; the pushing mechanism includes a second control switch 23, a third electric push rod 24 and a pushing frame 25. A second control switch 23 is installed in the middle of the bottom of the lower mold 2. When the lifting frame 19 moves downward, the bottom of the lifting frame 19 will press the first control switch 22. A third electric push rod 24 is installed on the lower side of the interior of the lower mold 2. The rear side of the lower mold 2 is slidably connected to the pushing frame 25, and the pushing frame 25 is connected to the telescopic rod of the third electric push rod 24.

[0033] like Figure 10 As shown, it also includes a chamfering assembly, which includes a second drive motor 26, a connecting rod 27, a first grinding head 28, a square rod 29, a circular plate 30, a first spring 3001 and a second grinding head 31. The second drive motor 26 is installed on the upper side of the sliding frame 18, and the connecting rod 27 is rotatably connected to the upper side of the sliding frame 18. The upper end of the connecting rod 27 is connected to the output shaft of the second drive motor 26, the lower end of the connecting rod 27 is connected to the first grinding head 28, and the bottom of the first grinding head 28 is connected to the square rod 29. The circular plate 30 is slidably connected to the upper side of the lifting frame 19, and the first spring 3001 is connected between the bottom of the circular plate 30 and the lifting frame 19. The top of the circular plate 30 is rotatably connected to the second grinding head 31. The second grinding head 31 is located directly below the first grinding head 28, and the top of the second grinding head 31 is provided with a square hole 3101 that matches the square rod 29.

[0034] like Figure 11 As shown, an elastic membrane 32 is also included. The elastic membrane 32 is connected between the outer side of each grinding plate 10 and the mounting frame 3. The elastic membrane 32 is used to block the gap between the grinding plate 10 and the mounting frame 3.

[0035] like Figure 12As shown, it also includes a guide rod 33, a push plate 34 and a second spring 35. Four guide rods 33 are symmetrically and slidingly connected to the bottom of the upper mold 1. Push plates 34 are connected between the bottoms of the four guide rods 33. The outer sides of the four guide rods 33 are all wound with a second spring 35. The two ends of the second spring 35 are respectively connected to the top of the push plate 34 and the upper mold 1.

[0036] Initially, a certain amount of hydraulic oil is filled in the fixed cylinder 14; first, the crankshaft 12 is driven to rotate by the first drive motor 11, and the crankshaft 12 cooperates with the slide groove 7 to drive the first sliding frame 4 to reciprocate left and right, and also to drive the second sliding frame 5 to reciprocate back and forth. The first sliding frame 4 and the second sliding frame 5 can respectively drive the four grinding plates 10 to reciprocate, and the elastic membrane 32 will adaptively deform so that the elastic membrane 32 can always block the gap between the grinding plate 10 and the mounting frame 3. Then, the raw material 001 is placed on the top of the lower mold 2, and the second grinding head 31 just contacts the lower edge of the circular hole 003. Then, the upper mold 1 is controlled to move downward, and the upper mold 1 drives the connecting rod 27, the first grinding head 28, the square rod 29, the guide rod 33 and The push plate 34 moves downward, and when the bottom of the push plate 34 contacts the top of the raw material 001, the push plate 34 stops moving downward, and the upper mold 1 will continue to drive the connecting rod 27, the first grinding head 28 and the square rod 29 to move downward, and the second spring 35 is compressed. At this time, the square rod 29 will pass through the circular hole 003 and insert into the square hole 3101. When the bottom of the upper mold 1 contacts the top of the raw material 001, the upper mold 1 and the lower mold 2 can cooperate to stamp the raw material 001 to form the workpiece 002, and the workpiece 002 is placed on the top of the lifting frame 19. At the same time, the first grinding head 28 will contact the upper edge of the circular hole 003; then the second drive motor 26 is controlled to drive the connecting rod 27 to rotate, and the connecting rod 27 drives the first grinding head 28 to rotate, and the first grinding head 28 is rotated. Through the cooperation of the square rod 29 and the square hole 3101, the second grinding head 31 can be driven to rotate, so that the first grinding head 28 and the second grinding head 31 can respectively grind and chamfer the upper and lower edges of the circular hole 003 to remove burrs at the upper and lower edges of the circular hole 003. At the same time, the second electric push rod 17 can be controlled to drive the sliding frame 18 to move downward. The sliding frame 18 will push the stamped workpiece 002 to move downward, and the workpiece 002 will squeeze the lifting frame 19 to move downward. The connecting spring 20 is stretched. At the same time, the sliding frame 18 and the lifting frame 19 can drive the first grinding head 28 and the second grinding head 31 to move downward synchronously, so that the grinding and chamfering work of the first grinding head 28 and the second grinding head 31 can continue. When the workpiece 002 drops to the same level as the grinding plate 10, the second grinding head 31 can continue to grind and chamfer. When the load is high, the lifting frame 19 just contacts the first control switch 22, and the first control switch 22 sends a signal. After receiving the signal, the control box controls the first electric push rod 13 to drive the piston 16 to move upward. The piston 16 pushes the hydraulic oil in the fixed cylinder 14 into the diverter hose 15 and flows into the four cavities 6 through the diverter hose 15. The hydraulic oil in the cavity 6 pushes the sliding plate 8 to move toward the lifting frame 19. The return spring 9 is stretched, and the sliding plate 8 can drive the grinding plate 10 to move toward the lifting frame 19, so that the four grinding plates 10 can contact the front, back, left and right sides of the workpiece 002 respectively, and the reciprocating motion of the grinding plate 10 can grind the side of the workpiece 002 to remove burrs on the side of the workpiece 002.The elastic membrane 32 can prevent the debris generated by grinding from falling into the mounting frame 3. When the lifting frame 19 is disengaged from the first control switch 22, the first control switch 22 sends a signal. After receiving the signal, the control box will control the first electric push rod 13 to drive the piston 16 to move downward and reset, so that the hydraulic oil in the cavity 6 can be pumped back into the fixed cylinder 14 through the diverter hose 15. The reset spring 9 returns to its original state, which can drive the sliding plate 8 and the grinding plate 10 to move away from the lifting frame 19 and reset, preventing the grinding plate 10 from being in contact with the surface of the lifting frame 19 for a long time and causing wear. Then the bottom of the lifting frame 19 will contact the second control switch 23. The second control switch 23 sends a signal, and the control box receives the signal. Then the third electric push rod 24 will be controlled to drive the push frame 25 to move forward, so that the lower part of the push frame 25 can be inserted into the lower part of the lifting frame 19 to limit the lifting frame 19, and then the control box will control the second drive motor 26 to stop working, so that the first grinding head 28 and the second grinding head 31 stop rotating. At the same time, the control box will control the second electric push rod 17 to drive the sliding frame 18 to move upward and reset. The sliding frame 18 drives the first grinding head 28 and the square rod 29 to move upward, so that the first grinding head 28 and the square rod 29 are both separated from the circular hole 003. Then the upper part of the push frame 25 will contact the workpiece 002 placed on the top of the lifting frame 19, thereby pushing the workpiece 002 forward, and the circular hole 003 on the workpiece 002 will be cut. 03 will squeeze the second grinding head 31 to move downward, and the second grinding head 31 will drive the circular plate 30 to move downward, and the first spring 3001 will be compressed. When the workpiece 002 is separated from the second grinding head 31, the first spring 3001 will return to its original shape, driving the circular plate 30 and the second grinding head 31 to move upward and reset, until the workpiece 002 is pushed into the discharge frame 21, so that the workpiece 002 can slide along the inclined surface at the bottom of the discharge frame 21 for discharge, and then the control box will control the third electric push rod 24 to drive the push frame 25 to move backward and reset. When the push frame 25 is separated from the lifting frame 19, the connecting spring 20 will return to its original shape, driving the lifting frame 19 to move upward and reset, and finally control the upper mold 1 to move upward After separating from the lower die 2, the upper die 1 drives the connecting rod 27, the first grinding head 28, and the square rod 29 to move upward and reset. Under the elastic force of the second spring 35, the push plate 34 will always press on the top of the raw material 001, preventing the raw material 001 from getting stuck on the upper die 1, ensuring that the upper die 1 can completely separate from the raw material 001. At the same time, the second spring 35 will gradually return to its original state. When the second spring 35 is completely restored to its original state, the upper die 1 can drive the guide rod 33 and the push plate 34 upward through the second spring 35, so that the push plate 34 is separated from the raw material 001. In this way, the four sides of the workpiece 002 and the edge of the circular hole 003 can be automatically polished to remove burrs during the discharge process of the workpiece 002, thereby improving work efficiency.

Claims

1. A stamping die for automatic deburring, comprising: an upper die (1); a lower die (2), arranged directly below the upper die (1); characterized in that, The invention also includes: a mounting frame (3) connected to the lower mold (2); a first sliding frame (4) slidably connected to the inside of the mounting frame (3); a second sliding frame (5) slidably connected to the inside of the mounting frame (3), the second sliding frame (5) and the first sliding frame (4) are in sliding contact, and the second sliding frame (5) and the first sliding frame (4) are symmetrically provided with a cavity (6) and a slide groove (7); a sliding plate (8) slidably connected to the cavity (6); a reset spring (9) arranged in the cavity (6), and the reset spring (9 ) are respectively connected to the side of the sliding plate (8) and the inner wall of the cavity (6); the grinding plate (10) is connected to the side of the sliding plate (8) away from the return spring (9); the driving component is arranged in the lower mold (2) and is used to drive the second sliding frame (5) and the first sliding frame (4) to move; the fitting component is arranged in the lower mold (2) and is used to drive the grinding plate (10) to move to fit with the outer side of the workpiece (002); the discharging component is arranged in the lower mold (2) and is used to discharge the punched workpiece (002).

2. The automatic deburring stamping die according to claim 1, characterized in that: The driving assembly comprises: a first driving motor (11) symmetrically mounted in the lower mold (2); a crankshaft (12) connected to the output shaft of the first driving motor (11), and the crankshaft (12) sequentially passes through the slide grooves (7) on the first sliding frame (4) and the second sliding frame (5).

3. The automatic deburring stamping die according to claim 1, characterized in that: The laminating assembly includes: a first electric push rod (13), which is installed in the lower mold (2); a fixed cylinder (14), which is connected to the lower mold (2), and the fixed cylinder (14) is located directly above the first electric push rod (13); A diverter hose (15) is connected to the top of the fixed cylinder (14) and maintained in communication, and the ends of the diverter hose (15) are respectively connected to the first sliding frame (4) and the second sliding frame (5), and maintained in communication with each cavity (6); a piston (16) is slidably connected in the fixed cylinder (14), and the bottom of the piston (16) is connected to the telescopic rod of the first electric push rod (13).

4. The automatic deburring stamping die according to claim 1, characterized in that: The discharge assembly includes: a second electric push rod (17), installed in the upper mold (1); a sliding frame (18), slidably connected to the upper mold (1), and the sliding frame (18) is connected to the telescopic rod of the second electric push rod (17); a lifting frame (19), slidably connected to the lower mold (2); a connecting spring (20), the two ends of which are respectively connected to the lifting frame (19) and the lower mold (2); a discharge frame (21), connected to the lower mold (2); a first control switch (22), installed in the lower mold (2); and a pushing mechanism, arranged in the lower mold (2), for pushing the workpiece (002) on the lifting frame (19) into the discharge frame (21) for discharge.

5. The automatic deburring stamping die according to claim 4, characterized in that: The pushing mechanism includes: a second control switch (23) installed in the lower mold (2); a third electric push rod (24) installed in the lower mold (2); a push frame (25) slidably connected in the lower mold (2), and the push frame (25) is connected to the telescopic rod of the third electric push rod (24).

6. The automatic deburring stamping die according to claim 4, characterized in that: The invention also includes a chamfering assembly, which includes: a second drive motor (26) installed in the sliding frame (18); a connecting rod (27) rotatably connected in the sliding frame (18), and the upper end of the connecting rod (27) is connected to the output shaft of the second drive motor (26); a first grinding head (28) connected to the lower end of the connecting rod (27); a square rod (29) connected to the bottom of the first grinding head (28); a circular plate (30) slidably connected in the lifting frame (19); a first spring (3001) with two ends respectively connected to the circular plate (30) and the lifting frame (19); a second grinding head (31) rotatably connected to the top of the circular plate (30), and a square hole (3101) adapted to the square rod (29) is opened on the top of the second grinding head (31).

7. The automatic deburring stamping die according to claim 1, characterized in that: It also includes: an elastic membrane (32) connected to the polishing plate (10) and the mounting frame (3).

8. The automatic deburring stamping die according to claim 1, characterized in that: The present invention also includes: a guide rod (33) symmetrically slidably connected to the bottom of the upper mold (1); a push plate (34) connected to the bottom of the guide rod (33); a second spring (35) wound around the outside of the guide rod (33), and the two ends of the second spring (35) are respectively connected to the push plate (34) and the upper mold (1).

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