Pendulum shear die capable of automatically adjusting cutter gap

Abstract

A pendulum shear die capable of automatically adjusting cutter gaps comprises a lower base and an upper base, a movable lower cutter holder is installed on the lower base, a lower cutter is arranged on the lower cutter holder, an upper cutter holder is fixedly installed at the bottom of the upper base, and an upper cutter is arranged on the upper cutter holder. The position of the inclined iron is adjusted by the small servo motor mounted on the cutting die through the screw pair, and an elastic return device for pulling the inclined iron to return is additionally arranged, so that the adjustment action of the cutter gap on the cutting die of the pendulum shearing machine is realized. The transverse movement driving mechanisms for pulling the inclined iron are all arranged on the cutting die, normal tool changing operation cannot be affected, and the cutting die can be conveniently and rapidly pulled out of the swing shearing machine to be replaced. The whole process is simple, time and labor are saved, the labor intensity of operators is effectively reduced, the efficiency and precision of cutter gap adjustment operation are greatly improved, in addition, the cutter gap adjusting device has the advantages of being simple and compact in structure, high in adjusting precision, easy and convenient to operate and high in practicability, and the cutter gap adjusting device can be further popularized in the technical field of cutter gap adjustment of the pendulum shearing machine.

Description

Technical Field

[0001] The utility model relates to the technical field of rapid replacement of swing shear dies for swing shear machines, in particular to a swing shear die capable of automatically adjusting knife gaps for replaceable knife dies for swing shear machines. Background Art

[0002] The swing shear is used in the swing shear line to unwind, swing shear and stack metal coils of different widths into rectangular, trapezoidal, parallelogram or even arc-shaped cuts (arc blades are required) plates of the required length. It is suitable for processing cold-rolled and stainless steel and various metal materials after surface coating. As the key host of the swing shear line, the swing shear has the shearing part modularized as a whole, that is, the swing shear die, also known as the knife die.

[0003] The cutter die can be quickly pulled out of the swing shear body when the machine is stopped, and quickly returned to its original position after the cutter die is replaced, so as to realize the rapid replacement of the same worn cutter or cutter with different cut shapes, greatly improving production efficiency. However, for plates of different thickness, strength and material, it is necessary to adjust the different shear gaps of the upper and lower knives in the cutter die. At present, there are generally two ways to adjust the gap: one is manual bevel iron adjustment, which manually adjusts the position of the bevel iron and measures the gap until it is suitable when the machine is stopped. It takes a long time and the error of individual measurement is also relatively large, which affects the production efficiency and product accuracy of the overall unit; the other is automatic adjustment. When the machine is stopped, the bevel iron can be directly controlled by the operating table to adjust the motor, and the position feedback of the adjusted blade of the displacement sensor can be added to achieve accurate adjustment of the gap.

[0004] However, in the replaceable die-cutting swing shearing machine, due to the quick-change function of the die-cutting machine, the die-cutting machine must be able to be easily and quickly pulled out of the swing shearing machine for replacement. This requires the large wall panels on both sides of the swing shearing machine and the crank connecting rod to reserve space for pulling out the die-cutting machine, which will inevitably lead to the limitation of the die-cutting machine space and the connection problem of the motor transmission: the space occupied by the die-cutting machine cannot be too wide, otherwise it will cause the overall structure of the swing shearing machine to be too large and the rigidity of the crank connecting rod to be greatly reduced; in addition, if the motor is installed on the die-cutting machine, it will increase the space occupied by the die-cutting machine. If it is installed on the main body of the swing shearing machine, it will involve the inability to reset the transmission chain. After all, the transmission execution unit is on the die-cutting machine, and the die-cutting machine has a swinging motion during operation. Therefore, how to solve the above two problems has become a difficult problem in the field of automatic adjustment of the knife gap function of the replaceable die-cutting swing shearing machine. Utility Model Content

[0005] The utility model aims to provide an automatic knife gap adjustment swing shear die, which adjusts the knife gap on the knife die of the swing shear machine by adjusting the position of the inclined iron through a small servo motor installed on the knife die. The purpose can be achieved accurately and without error only through the operation of the operating table, thereby effectively improving the production efficiency of the entire unit and reducing the product precision out-of-tolerance phenomenon caused by human adjustment errors, thereby solving the problems in the prior art.

[0006] The technical solution adopted by the utility model to solve its technical problems is: an automatic knife gap adjustment swing shearing die, comprising a lower base and an upper base, a movable lower knife seat is installed on the lower base, a lower cutting knife is arranged on the lower knife seat, the upper knife seat is fixedly installed on the bottom of the upper base, an upper cutting knife is arranged on the upper knife seat, guide columns are provided at the four corners of the upper base, and guide sleeves matching with the guide columns are installed on the lower base. When the upper base is vertically lifted relative to the lower base, the upper cutting knife can cooperate with the lower cutting knife to achieve shearing. A plurality of T-blocks are installed on the front side of the lower base, a knife gap adjustment groove matching with the T-block is opened on the lower knife seat, the length of the knife gap adjustment groove is greater than the length of the T-block, an inclined iron is installed between the rear side of the lower knife seat and the lower base, a transverse driving mechanism is installed on the inclined iron, the transverse driving mechanism can drive the inclined iron to push the lower knife seat to move and adjust relative to the T-block, and a plurality of elastic return devices are installed between the lower knife seat and the lower base, each elastic return device The devices all have a tendency to press the lower knife seat against the inclined iron, wherein the transverse driving mechanism includes a servo motor, a reducer is installed on the output shaft of the servo motor, a bearing seat is installed on the lower base, a first screw connected to the reducer shaft is installed in the bearing seat, a nut is installed on the first screw, the nut is fixedly connected to the inclined iron through a shift fork, a first avoidance groove matched with the shift fork is provided on the lower base, each elastic return device includes a second screw arranged on the lower knife seat, a second avoidance groove matched with the second screw is provided on the inclined iron, a through hole matched with the second screw is provided on the lower base, a baffle cover is installed on the end of the second screw passing through the side surface of the lower base, a first spring is installed on the outer periphery of the second screw between the baffle cover and the lower base, the first spring always has a tendency to pull the lower knife seat to move closer to the inclined iron, and the servo motor can drive the inclined iron to overcome the elastic force of the first spring to push the lower knife seat to move and adjust. Several groups of wear-resistant plates are installed on the upper base, and T-slot plates are arranged between the wear-resistant plates. Several groups of locking blocks are arranged on both sides of the length direction of the lower base, and locking screws are installed in the locking blocks. The lower end of the locking screw passing through the locking block is installed with a disc spring, and convex edges matching the locking blocks are arranged on both sides of the length direction of the lower base. Several groups of elastic pressing mechanisms are installed between the upper base and the lower knife seat, and each group of elastic pressing mechanisms includes a third screw rod, and a limit plate is installed at one end of the third screw rod passing through the upper base upward, and a pressing plate is installed at one end of the third screw rod passing through the upper base downward, and a rubber pad is arranged at the bottom of the pressing plate, and the rubber pad is located on the lower knife seat. A second spring is sleeved on the outer periphery of the third screw rod between the pressing plate and the upper base, and the second spring always has a tendency to press the rubber pad against the lower knife seat. A wear-resistant sleeve is arranged in the guide sleeve, and a pressure cover and a buffer pad are installed on the top of the guide sleeve, and a hook is installed between the two guide sleeves at the same end position. The lower base is provided with a guide support, which is located on the upper side of the inclined iron, and a plurality of connecting blocks are arranged in the length direction of the guide support, and a connecting plate is installed on the top of the connecting blocks. The lower base is provided with a mechanical positioning stud, and the lower knife seat is provided with a limit groove matched with the mechanical positioning stud, and a displacement sensor is also installed on the lower base.

[0007] The positive effect of the utility model is that the automatic knife gap adjustment swing shear die described in the utility model adjusts the knife gap on the swing shear die by adjusting the position of the bevel iron via a screw pair through a small servo motor installed on the knife die, and an elastic return device that pulls the bevel iron back to its position is added to achieve the adjustment action of the knife gap on the swing shear die. The transverse drive mechanism that pulls the bevel iron is all set on the knife die, which will not affect the normal knife changing operation. The knife die can be easily and quickly pulled out of the swing shear for replacement. The whole process is simple, time-saving and labor-saving, effectively reducing the labor intensity of the operator, and greatly improving the efficiency and accuracy of the knife gap adjustment operation. In addition, the utility model also has the advantages of simple and compact structure, high adjustment accuracy, simple operation and strong practicality, which is conducive to further promotion in the field of knife gap adjustment technology of swing shears. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is an axonometric view of the utility model;

[0009] Figure 2 It is the front view of the utility model;

[0010] Figure 3 yes Figure 2 Middle AA phase cross-sectional view;

[0011] Figure 4 yes Figure 2 An enlarged view of the BB section view;

[0012] Figure 5 yes Figure 3 A partial enlarged view of middle I;

[0013] Figure 6 yes Figure 4 A partial enlarged view of middle II;

[0014] Figure 7 yes Figure 2 A partial enlarged view of middle III;

[0015] Figure 8 yes Figure 3 An enlarged view of the CC section view;

[0016] Fig. 9 It is a structural schematic diagram of an automatic knife gap adjustment swing shearing die installed on a swing shearing machine. DETAILED DESCRIPTION

[0017] The utility model discloses an automatic knife gap adjustment swing shear die, such as Figure 1-4As shown, it includes a lower base 1 and an upper base 2, and the swing shear die is detachably mounted on the swing shear through the lower base 1 and the upper base 2. A movable lower knife seat 3 is mounted on the lower base 1, and a lower cutter 4 is arranged on the lower knife seat 3. An upper knife seat 5 is fixedly mounted on the bottom of the upper base 2, and an upper cutter 6 is arranged on the upper knife seat 5. The upper cutter 6 and the lower cutter 4 are arranged in coordination, and the shearing of the material is achieved through relative vertical movement, and the lower knife seat 3 can also be moved to adjust the gap between the two knives.

[0018] Guide posts 7 are provided at the four corners of the upper base 2, and guide sleeves 8 are installed on the lower base 1 to match the guide posts 7. When the upper base 2 is vertically raised or lowered relative to the lower base 1, the upper cutter 6 can cooperate with the lower cutter 4 to achieve shearing. The setting of the guide posts 7 and the guide sleeves 8 plays a role in connecting and guiding the lower base 1 and the upper base 2.

[0019] In order to realize the movement and adjustment of the lower knife seat 3, a plurality of T-blocks 9 are installed on the front side of the lower base 1, and a knife gap adjustment groove 10 matching with the T-block 9 is provided on the lower knife seat 3, and the length of the knife gap adjustment groove 10 is greater than the length of the T-block 9. The T-block 9 can be fixed on the lower base 1 by bolts, and the matching knife gap adjustment groove 10 can guide and limit the movement of the lower base 1.

[0020] An inclined iron 11 is installed between the rear side of the lower knife seat 3 and the lower base 1, and a transverse driving mechanism is installed on the inclined iron 11. The transverse driving mechanism can drive the inclined iron 11 to push the lower knife seat 3 to move and adjust relative to the T-block 9. Several elastic return devices are installed between the lower knife seat 3 and the lower base 1, and each elastic return device has a tendency to press the lower knife seat 3 against the inclined iron 11. The inclined iron 11 is used to move and adjust the lower knife seat 3 through the cooperation of the transverse driving mechanism and the elastic return device, and then the gap between the cutters is adjusted as needed.

[0021] The lateral drive mechanism can be an existing drive cylinder or telescopic motor, in order to facilitate the overall disassembly and assembly of the knife die, and to play a more precise driving role on the inclined iron 11, such as Figure 5 As shown, the lateral drive mechanism includes a servo motor 12, and a reducer 13 is installed on the output shaft of the servo motor 12. A bearing seat 14 is installed on the lower base 1, and a first screw 15 connected to the rotating shaft of the reducer 13 is installed in the bearing seat 14, and a nut 16 is installed on the first screw 15, and the nut 16 is fixedly connected to the inclined iron 11 through a fork 17. A first avoidance groove 18 matched with the fork 17 is provided on the lower base 1. When the servo motor 12 is started, it can drive the inclined iron 11 to move horizontally in the length direction, thereby pushing the lower knife seat 3 to move and adjust the front and rear positions.

[0022] In order to adjust and reset the inclined iron 11, each elastic return device includes a second screw 19 arranged on the lower knife seat 3, a second avoidance groove 20 matched with the second screw 19 is provided on the inclined iron 11, a through hole matched with the second screw 19 is provided on the lower base 1, a blocking cover 21 is installed at one end of the second screw 19 passing through the side of the lower base 1, and a first spring 22 is installed on the outer periphery of the second screw 19 between the blocking cover 21 and the lower base 1, and the first spring 22 always has a tendency to pull the lower knife seat 3 to move closer to the inclined iron 11. The servo motor 12 can drive the inclined iron 11 to overcome the elastic force of the first spring 22 to push the lower knife seat 3 to move and adjust.

[0023] The second screw 19 is fixedly connected to the lower knife seat 3, and will only move forward and backward relative to the lower base 1 under the action of the through hole. The setting of the second avoidance groove 20 will not affect the normal lateral adjustment of the inclined iron 11. Due to the inclination of the surface of the inclined iron 11 and the elastic return device, the surface of the inclined iron 11 is always in contact with the lower knife seat 3. When the inclined iron 11 moves horizontally, it will drive the lower knife seat 3 to move forward and backward to adjust the cutting knife gap.

[0024] When the knife gap needs to be reduced, the servo motor 12 rotates, drives the first screw 15 to rotate through the reducer 13 and the coupling, and then drives the fork 17 to move through the nut 16, and then acts on the inclined iron 11 to move it toward the small end, thereby pushing the lower knife seat 3 along the positioning guide of the T-block 9 to approach the upper knife seat 5, and finally reducing the gap between the lower cutter 4 and the upper cutter 6. Conversely, when a large knife gap is required, the servo motor 12 rotates in the opposite direction, and the fork 17 drives the inclined iron 11 to move toward the large end, and a gap will appear between the inclined iron 11 and the lower knife seat 3. At this time, the elastic return device installed on the lower knife seat 3 takes effect, pulling the lower knife seat 3 along the positioning guide of the T-block 9 away from the upper knife seat 5, and finally increasing the gap between the lower cutter 4 and the upper cutter 6.

[0025] Furthermore, several groups of wear-resistant plates 23 are installed on the upper base 2, and T-slot plates 24 are arranged between the wear-resistant plates 23. The wear-resistant plates 23 can effectively prevent the upper base 2 and the upper knife seat 5 from bending and deforming, and the function of the T-slot plates 24 is to drive the upper base 2 to rise and fall vertically. The T-slot plates 24 are completely penetrated on one side. When the cutting die is pulled into the swing shearing machine, the locking cylinder head of the swing shearing machine lifting slider can smoothly enter the T-slot in the plate through the notch on this side. After the cutting die is fully in place, the cylinder lifts the T-slot plates 24 upwards, so that it is firmly locked with the rotating cylinder located on the lifting slider. The wear-resistant plates 23 located above the upper knife seat 5 are lifted at the same time, and a gap of 0.1-0.2mm is maintained with the lower bottom surface of the swing shearing machine lifting slider, ensuring that when the cutting die swings, no excessive resistance is generated, and when shearing the plate, the upper knife seat 5 will not produce a deformation greater than this gap due to the reaction force of the plate.

[0026] A plurality of locking blocks 25 are provided on both sides of the length direction of the lower base 1, and locking screws 26 are installed in the locking blocks 25. The lower end of the locking screws 26 passing through the locking blocks 25 is installed with disc springs 27. Both sides of the length direction of the lower base 1 are provided with convex edges 28 that match the locking blocks 25. When the cutter die is installed in place, the locking screws 26 can be rotated to make the locking blocks 25 press against the lower base 1, thereby firmly fixing the position of the cutter die. When the cutter die needs to be pulled out for replacement, the locking screws 26 are loosened, and the disc springs 27 lift up the locking blocks 25, so that the cutter die can be pulled out of the swing shear body by external power.

[0027] When the plate material is sheared, the material is fed into the feeding side position between the lower knife seat 3 and the upper knife seat 5. When the plate is sheared later, positive pressure will be generated on the material, causing the plate to move. In order to prevent the above situation and improve the shearing accuracy, several groups of elastic pressing mechanisms are installed between the upper base 2 and the lower knife seat 3. Figure 6 As shown, each group of elastic pressing mechanisms includes a third screw 29, and a limit plate 30 is installed at one end of the third screw 29 that passes through the upper base 2 upwards, and a pressing plate 31 is installed at one end of the third screw 29 that passes through the upper base 2 downwards, and a rubber pad 32 is arranged at the bottom of the pressing plate 31. The rubber pad 32 is located on the lower knife seat 3, and a second spring 33 is sleeved on the outer periphery of the third screw 29 between the pressing plate 31 and the upper base 2, and the second spring 33 always has a tendency to press the rubber pad 32 against the lower knife seat 3. The above-mentioned elastic pressing mechanism can realize elastic compression of the plate when shearing the material, and is suitable for plate materials of different thicknesses.

[0028] Furthermore, if Figure 7 As shown, the guide sleeve 8 is provided with a wear-resistant sleeve 34, and a pressure cover 35 and a buffer pad 36 are installed on the top of the guide sleeve 8. The guide sleeves 8 are welded at the four corners of the lower base 1, and the connection and guidance are realized through the wear-resistant sleeves 34 and the guide pillars 7. The shear force generated when shearing the steel plate is offset by the lower base 1 and the upper base 2, which becomes the internal force of the entire cutter die, thereby avoiding affecting the installation and positioning of the cutter die and the structural stability of the swing shear machine. The setting of the buffer pad 36 can play an effective shock-absorbing role.

[0029] A hook 37 is installed between the two guide sleeves 8 at the same end position. The setting of the hook 37 is convenient for using a lifting tool to disassemble and install the integral knife die.

[0030] Furthermore, in order to realize the vertical limit when the inclined iron 11 is moved and adjusted, a guide support 38 is installed on the lower base 1, and the guide support 38 is located on the upper side of the inclined iron 11. A plurality of connecting blocks 39 are arranged in the length direction of the guide support 38, and a connecting plate 40 is installed on the top of the connecting block 39, wherein the connecting block 39 and the guide support 38 can be the same integrally formed part. The guide support 38 can press the upper plane of the inclined iron 11, and maintain a certain gap, which will not increase the resistance of the inclined iron 11 to move, and can prevent the inclined iron 11 from tilting during the movement process, thereby affecting the accuracy of the blade gap. The connection plate 40 is set to connect all the connection blocks 39 and provide a placement plane for the feeding of the material to be sheared. There is a gap between adjacent connection blocks 39, which can reserve sufficient avoidance space for the bolts on the lower knife seat 3, and the bolts on it will not interfere with the connection block 39 when the lower knife seat 3 is adjusted forward and backward.

[0031] Furthermore, a mechanical positioning stud 41 is installed on the lower base 1, and a limit groove 42 that cooperates with the mechanical positioning stud 41 is opened on the lower tool seat 3. A displacement sensor 43 is also installed on the lower base 1, wherein the mechanical positioning stud 41 can form a fixed limit for the forward and backward movement adjustment of the lower tool seat 3. The servo motor 12 has an absolute value encoder, which can be compared with the value of the displacement sensor 43 that directly measures the final position of the adjusted tool to ensure the accuracy of the tool gap and avoid tool gap errors caused by the inability of the tool to return to its original position due to dust and debris.

[0032] In order to ensure the accuracy of the blade gap adjustment, the utility model adopts a double detection and comparison method of the active end and the final execution end. First, the servo motor 12 is equipped with an absolute value encoder. After the system calculates the motor rotation amount corresponding to the blade gap adjustment amount, the goal can be achieved accurately. Secondly, the displacement sensor 43 can be used to directly detect the movement of the blade during the entire adjustment process, and at the same time compare it with the value measured by the absolute value encoder of the servo motor 12 in the system. When the error is greater than the set value, the system alarms to prompt the operator that the adjustment is inaccurate. Finally, a mechanical positioning stud 41 is also installed to prevent the blade gap from being less than 0mm, causing the knife biting phenomenon and thus damaging the shear blade. Combining the above three points, the entire adjustment mechanism can prevent dust, iron filings and other debris from affecting the accuracy of the adjustment mechanism, and avoids the knife biting phenomenon, thereby increasing protection for the shear blade.

[0033] After the knife gap is adjusted into place, in order to ensure the stability of the knife gap during the entire shearing process, the servo motor 12 may be provided with a brake function. In addition, the first screw 15 adopts a fine-pitch and small-helix angle, and has a very good self-locking performance, thereby ensuring that the knife gap value will not change during continuous shearing work.

[0034] The technical solution of the present invention is not limited to the scope of the embodiments described in the present invention. The technical contents not described in detail in the present invention are all known technologies.

Claims

1. An automatic knife gap adjustment swing shearing die, comprising a lower base (1) and an upper base (2), wherein a movable lower knife seat (3) is mounted on the lower base (1), a lower cutter (4) is arranged on the lower knife seat (3), an upper knife seat (5) is fixedly mounted on the bottom of the upper base (2), an upper cutter (6) is arranged on the upper knife seat (5), guide posts (7) are arranged at the four corners of the upper base (2), a guide sleeve (8) matched with the guide post (7) is mounted on the lower base (1), and when the upper base (2) is vertically raised or lowered relative to the lower base (1), the upper cutter (6) can cooperate with the lower cutter (4) to achieve shearing, characterized in that: A plurality of T-shaped blocks (9) are mounted on the front side of the lower base (1); a knife gap adjustment groove (10) matching with the T-shaped block (9) is formed on the lower knife seat (3); the length of the knife gap adjustment groove (10) is greater than the length of the T-shaped block (9); an inclined iron (11) is mounted between the rear side of the lower knife seat (3) and the lower base (1); a transverse driving mechanism is mounted on the inclined iron (11); the transverse driving mechanism can drive the inclined iron (11) to push the lower knife seat (3) to move relative to the T-shaped block (9) for adjustment. A plurality of elastic return devices are installed between the lower knife seat (3) and the lower base (1), and each elastic return device has a tendency to make the lower knife seat (3) pressed against the inclined iron (11), wherein the transverse driving mechanism includes a servo motor (12), a reducer (13) is installed on the output shaft of the servo motor (12), a bearing seat (14) is installed on the lower base (1), and a first screw (15) connected to the rotating shaft of the reducer (13) is installed in the bearing seat (14), and a first screw (15) connected to the rotating shaft of the reducer (13) is installed in the bearing seat (14). A nut (16) is mounted on a screw rod (15), the nut (16) is fixedly connected to the inclined iron (11) via a shift fork (17), a first avoidance groove (18) matching with the shift fork (17) is provided on the lower base (1), each elastic return device comprises a second screw rod (19) arranged on the lower knife seat (3), a second avoidance groove (20) matching with the second screw rod (19) is provided on the inclined iron (11), and a first avoidance groove (20) matching with the second screw rod (19) is provided on the lower base (1). (19) is provided with a through hole matching the lower base (1), and a baffle (21) is installed at one end of the second screw rod (19) passing through the side of the lower base (1). A first spring (22) is installed on the outer periphery of the second screw rod (19) between the baffle (21) and the lower base (1). The first spring (22) always has a tendency to pull the lower knife seat (3) to move closer to the inclined iron (11), and the servo motor (12) can drive the inclined iron (11) to overcome the elastic force of the first spring (22) and push the lower knife seat (3) to move and adjust.

2. The automatic knife gap adjustment shearing die according to claim 1, characterized in that: A plurality of groups of wear-resistant plates (23) are mounted on the upper base (2), and T-shaped groove plates (24) are arranged between the wear-resistant plates (23). A plurality of groups of locking blocks (25) are arranged on both sides of the length direction of the lower base (1), and locking screws (26) are installed in the locking blocks (25). The lower ends of the locking screws (26) passing through the locking blocks (25) are installed with disc springs (27). Both sides of the length direction of the lower base (1) are provided with convex edges (28) that cooperate with the locking blocks (25).

3. The automatic knife gap adjustment shearing die according to claim 1, characterized in that: A plurality of groups of elastic pressing mechanisms are installed between the upper base (2) and the lower knife seat (3), each group of elastic pressing mechanisms comprises a third screw rod (29), one end of the third screw rod (29) passing upward through the upper base (2) is installed with a limiting plate (30), one end of the third screw rod (29) passing downward through the upper base (2) is installed with a pressing plate (31), a rubber pad (32) is arranged at the bottom of the pressing plate (31), the rubber pad (32) is located on the lower knife seat (3), and a second spring (33) is sleeved on the outer periphery of the third screw rod (29) between the pressing plate (31) and the upper base (2), the second spring (33) always has a tendency to press the rubber pad (32) against the lower knife seat (3).

4. The automatic knife gap adjustment shearing die according to claim 1, characterized in that: A wear-resistant sleeve (34) is provided in the guide sleeve (8), a pressure cover (35) and a buffer pad (36) are installed on the top of the guide sleeve (8), and a hook (37) is installed between two guide sleeves (8) at the same end position.

5. The automatic knife gap adjustment shearing die according to claim 1, characterized in that: A guide support (38) is mounted on the lower base (1), the guide support (38) is located on the upper side of the inclined iron (11), a plurality of connecting blocks (39) are arranged in the length direction of the guide support (38), and a connecting plate (40) is mounted on the top ends of the connecting blocks (39).

6. The automatic knife gap adjustment shearing die according to claim 1, characterized in that: A mechanical positioning stud (41) is installed on the lower base (1), a limiting groove (42) matching with the mechanical positioning stud (41) is provided on the lower knife seat (3), and a displacement sensor (43) is also installed on the lower base (1).

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