Totally-enclosed automatic clamping clamp

Abstract

The invention relates to the technical field of numerical control turret punch press equipment machining, and discloses a totally-enclosed automatic clamping clamp which comprises a plate clamping mechanism and an automatic clamp locking mechanism, the plate clamping mechanism comprises an upper clamping plate, a clamp bottom plate and a piston, the upper clamping plate is connected to the piston through a piston rod, the piston is located in a self-made cylinder body, and the clamp bottom plate is connected to the piston through a piston rod. The front end of the upper clamping plate is provided with a toothed nail, the lower portion of the upper clamping plate is matched with a toothed nail plate, the clamp automatic locking mechanism comprises a rear piston, a pull rod, a precise wedge block, a wedge pull block and a locking spring, and when an upper cavity of the rear piston exhausts, the locking spring pushes the precise wedge block to be matched with the wedge pull block through the pull rod. The clamp bottom plate and the clamp seat body can automatically adjust the height of the clamp in a floating mode according to the working condition of an external working table, and the clamp is protected against faults caused by external impact. The whole clamp adopts a totally-closed design, no cable or pipeline is exposed outside, the clamp is prevented from being scratched by the section of the metal plate, and the service life is greatly prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical processing of numerically controlled turret punch press equipment, in particular to a fully enclosed automatic clamping pliers. Background Art

[0002] CNC turret punch press is a very important equipment in the field of sheet metal forming. It has the functions of punching and metal stretching. After years of technological development, it has been widely used in many industries such as electric power, aerospace, home appliances, curtain wall, etc. The clamp is one of the core components in the combined structure of the CNC turret punch press. Each device contains three clamps, whose main function is to clamp the plate and quickly move it into position. During the process, the relative position will be adjusted according to the size of the plate. The current conventional structure is to manually move the position and then manually lock it. It is very troublesome to adjust the position of the clamp during the processing of complex workpieces. In addition, the gas circuits and lines of traditional clamp components are mostly exposed designs, and the metal waste chips from stamping in the sheet metal industry splashing onto the work surface can easily scratch the pipeline and cause failures. Summary of the invention

[0003] In view of the deficiencies of the prior art, an object of the present invention is to provide a fully enclosed automatic clamping pliers to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fully enclosed automatic clamping pliers, comprising a plate clamping mechanism and a clamp automatic locking mechanism, wherein the plate clamping mechanism comprises an upper clamping plate, a clamp bottom plate and a piston, and the upper clamping plate is connected to the piston through a piston rod, the piston is located in a self-made cylinder body, a toothed nail is installed at the front end of the upper clamping plate, and the lower part cooperates with the toothed nail plate, when the plate pushes the positioning pin and the positioning block, after the sensor confirms that the position is in place, high-pressure gas enters the lower chamber of the piston, so that the piston rod moves upward to drive the upper clamping plate downward to clamp the plate; The clamp base plate is connected to the clamp seat through a guide rod, and the guide rod passes through a linear bearing to achieve up and down floating; The automatic locking mechanism of the clamp includes a rear piston, a pull rod, a precision wedge block, a wedge pull block and a locking spring. When the upper chamber of the rear piston is exhausted, the locking spring pushes the precision wedge block through the pull rod to cooperate with the wedge pull block to achieve horizontal compression of the guide rail, thereby locking the position of the clamp body on the X-axis slide; by controlling the ventilation of the upper chamber of the rear piston, the piston overcomes the resistance of the locking spring to press the pull rod and the wedge pull block downward to achieve separation of the clamp and the guide rail, and the positioning pin cooperates with the cylinder to move the pin into the positioning hole at the bottom of the clamp seat, and then the X-axis slide is moved to adjust the position of the clamp.

[0005] Furthermore, the sensor installed inside the clamp base plate is connected to the sensor cable. The sensor cable, air pipe and related joints are built into the clamp structure, hidden by internal wire troughs and customized hollow extension screws, and finally come out from the top front cylinder body and merge with the air pipeline. All joints and lines are sealed and protected by the top cover.

[0006] Furthermore, a tooth nail made of alloy hardened material is installed at the front end of the upper clamping plate, and the tooth nail plate is made of composite wear-resistant material.

[0007] Furthermore, the clamp seat is designed as a split structure, and the clamp seat includes a bottom fixing seat and a detachable upper cover. The bottom fixing seat is fastened to the X-axis slide, and the detachable upper cover is connected to the bottom fixing seat by bolts or buckles.

[0008] Furthermore, an elastic buffer pad is provided between the tooth nail plate and the clamp seat to absorb the impact between the plate and the clamp during the clamping process and protect the surface of the plate from damage.

[0009] Furthermore, the contact surfaces of the upper clamping plate and the tooth nail plate are treated with a wear-resistant coating to improve the hardness and wear resistance of the clamping surface, reduce the wear caused by long-term clamping, and ensure the long-term stable operation of the clamp. The opening and closing actions of the upper clamping plate are controlled by a precise transmission mechanism to ensure that the clamping force can be accurately adjusted.

[0010] Furthermore, the clamp base plate is connected to two guide rods on the front side of the clamp, and the guide rods float up and down through two linear guide bearings built into the left and right sides of the clamp seat, ensuring that when the plate encounters uneven obstacles during movement, the clamp base plate can drive the plate as a whole to float up and down through the guide rods to avoid them.

[0011] Furthermore, the rear piston is an overall cylindrical structure, with a head diameter slightly larger than the tail diameter, the head diameter is between 40-50mm, and the tail diameter is between 35-45mm. The piston head is provided with a plurality of sealing ring grooves, the number of which is 3-5, the depth is between 2-3mm, the width is between 3-5mm, and the spacing between adjacent sealing ring grooves is between 4-6mm. High-performance sealing rings are installed in the sealing ring grooves, and the sealing rings are made of fluororubber material. A pull rod connecting hole is provided in the middle of the piston, and the diameter of the connecting hole is within the matching tolerance of the outer diameter of the pull rod to ensure a firm connection between the pull rod and the piston; a plane in contact with the bottom of the cylinder body is provided at the tail of the piston, and the cylinder body where the rear piston is located is made of high-strength aluminum alloy material with a wall thickness between 5-8mm. A cooling channel is provided inside the cylinder body, and the cooling channel diameter is between 3-5mm and is spirally distributed in the cylinder body wall.

[0012] Furthermore, the precision wedge block is a trapezoidal structure, with a long side length of 30-40 mm and a short side length of 15-25 mm, the long side contacts the guide rail, and the short side contacts the wedge pull block; the wedge pull block is also a trapezoidal structure, with a long side length of 25-35 mm and a short side length of 10-20 mm, the long side contacts the precision wedge block, and the short side is connected to the pull rod; the contact surface of the two is an inclined surface, and the inclined surface angle is between 35°-45°, and a wear-resistant coating is provided on the contact surface of the precision wedge block and the wedge pull block, and the coating thickness is The diameter of the wedge block and the pull rod is between 0.02-0.05mm, and it is made of ceramic material. A pin hole is provided at the connection between the wedge block and the pull rod, and the pin is firmly connected to the wedge block and the pull rod. A protective device is arranged around the precision wedge block and the wedge pull block. The protective device is a combination of a metal protective plate and a rubber buffer pad. The metal protective plate is made of stainless steel with a thickness of 2-3mm. The rubber buffer pad is made of high-elastic rubber material with a thickness of 1-2mm. It is arranged between the metal protective plate and the precision wedge block and the wedge pull block.

[0013] Compared with the prior art, the present invention provides a fully enclosed automatic clamping clamp, and the beneficial effects of the present invention are as follows: the plate is placed in the clamp jaws for positioning, the plate pushes the front positioning block to push the internal push rod backwards, the built-in sensor on the front side of the clamp confirms the push rod position in place signal, and after all three clamps are in place, a locking command is initiated, the lower chamber of the piston rod on the front side of the clamp passes high-pressure gas to move upward, the lower side of the piston rod is connected to the clamp upper clamp plate, the front end of the upper clamp plate moves downward to clamp the plate, the front end of the upper clamp plate is installed with alloy hardened material tooth nails, and the lower part is installed with a composite wear-resistant material tooth nail plate, and after the upper and lower clamps are clamped, the clamping stability of the plate under high-speed movement is ensured; The clamp bottom plate is connected to the two guide rods on the front side of the clamp. The guide rods move up and down through two linear guide bearings built into the left and right sides of the clamp seat to ensure that when the plate encounters uneven obstacles during movement, the clamp bottom plate as a whole drives the plate to float up and down through the guide rods to avoid them, thus protecting the clamp body. The upper chambers of the two pistons at the rear side of the clamp are exhausted, and the disc spring pushes the piston upward through the pull rod. The wedge pull block connected to the pull rod below moves upward along the plane bearing, and a horizontal component force is simultaneously applied to the wedge block to press the guide rail, thereby locking and positioning the clamp body on the X-axis slide.

[0014] Clamp position movement: The X-axis slide drives the clamp to move to the specified position, and the upper chambers of the two pistons on the rear side of the clamp are ventilated. Under the action of air pressure, the piston overcomes the resistance of the disc spring and pushes the pull rod and the wedge block downward. The wedge block loosens in the absence of horizontal lateral force, eliminating the friction locking force between the clamp body and the guide rail. After the clamp and the guide rail are loosened, the cylinder of the lower positioning device is actuated, and the pin is inserted into the positioning hole at the bottom of the clamp seat, and then the X-axis slide is moved to realize the relative position adjustment between the clamps.

[0015] The clamp mainly consists of sensor cables, air pipes and related connectors. The sensor cables are built into the base plate of the clamp and sealed and protected by the induction bracket. The cables are introduced into the customized hollow extension screws through the internal wire grooves, and finally come out from the top front cylinder to merge with the air pipeline. The internal air pipeline connectors are all hidden and protected by the top cover. Finally, the overall appearance of the clamp is complete without exposed wires, ensuring a maintenance-free service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention on a slide; Figure 2 This is a schematic diagram of the action of the clamping plate of the present invention; Figure 3 This is a schematic diagram of the up and down floating and rear side locking principle of the clamp of the present invention; Figure 4 This is a schematic diagram of the lead-out line of the clamp of the present invention; Figure 5 The figure is a diagram of the clamping pliers of the present invention.

[0017] In the figure: 1. slide; 2. guide plate; 3. positioning pin; 4. cylinder; 5. cylinder body; 6. clamp seat; 7. upper clamp plate; 8. sheet; 9. tooth nail plate; 10. rectangular spring; 11. piston; 12. piston rod; 13. hollow screw; 14. guide rod; 15. linear bearing; 16. sensor pressure plate; 17. clamp bottom plate; 18. sensor; 19. rear piston; 20. locking spring; 21. pull rod; 22. precision wedge block; 23. wedge pull block; 24. pin shaft; 25. sensor cable; 26. air pipe joint; 27. rotating shaft; 28. tooth nail; 29. ​​positioning pin; 30. positioning block; 31. spring; 32. plane bearing; 33. top cover plate. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-5 The present invention relates to a fully enclosed automatic clamping pliers, which is mainly used in the field of mechanical processing of CNC turret punch press equipment, and is used to clamp plates and realize rapid movement and positioning; the clamping pliers includes two major parts: a plate clamping mechanism and a clamping automatic locking mechanism; The plate clamping mechanism is composed of an upper clamping plate 7, a clamping base plate 17 and a piston 11; the upper clamping plate 7 is connected to the piston 11 through a piston rod 12, and the piston 11 is located in a self-made cylinder 5; a tooth nail 28 made of alloy hardened material is installed at the front end of the upper clamping plate 7, and the lower part cooperates with the tooth nail plate 9; the clamping base plate 17 is connected to the clamping seat 6 through a guide rod 14, and the guide rod 14 passes through a linear bearing 15 to achieve up and down floating; When the plate 8 is placed at the jaw position of the clamp, the plate pushes the front positioning pin 29 and the positioning block 30, overcomes the resistance of the spring 31, and is positioned close to the positioning block 30; the built-in sensor 18 on the front side of the clamp confirms the push rod position signal, and initiates a locking command after all three clamps are in place; at this time, high-pressure gas enters the lower chamber of the piston 11, causing the piston rod 12 to move upward and drive the upper clamp 7 downward; the tooth nail 28 at the front end of the upper clamp 7 penetrates the plate 8, and at the same time cooperates with the tooth nail plate 9 to clamp the plate 8 up and down, ensuring the clamping stability of the plate under high-speed movement; The automatic locking mechanism of the clamp includes a rear piston 19, a pull rod 21, a precision wedge block 22, a wedge pull block 23 and a locking spring 20; the rear piston 19 is a cylindrical structure as a whole, and its head diameter is slightly larger than the tail diameter, the head diameter is between 40-50mm, and the tail diameter is between 35-45mm; the piston head is provided with a plurality of sealing ring grooves, the number of sealing ring grooves is 3-5, the depth is between 2-3mm, the width is between 3-5mm, the spacing between adjacent sealing ring grooves is between 4-6mm, and the sealing ring grooves are installed High-performance sealing ring, the sealing ring is made of fluororubber material; a connecting hole for the pull rod 21 is provided in the middle of the piston, and the matching tolerance of the connecting hole diameter and the outer diameter of the pull rod 21 ensures a firm connection between the pull rod 21 and the piston; a plane in contact with the bottom of the cylinder body is provided at the tail of the piston, and the cylinder body where the rear piston 19 is located is made of high-strength aluminum alloy material, and its wall thickness is between 5-8mm. A cooling channel is provided inside the cylinder body, and the cooling channel diameter is between 3-5mm, and is spirally distributed in the cylinder body wall; the precision wedge block 22 is a trapezoidal structure, and the long side length is between 30- 40mm, the short side length is between 15-25mm, the long side contacts the guide rail 2, and the short side contacts the wedge pull block 23; the wedge pull block 23 is also a trapezoidal structure, the long side length is between 25-35mm, the short side strength is between 10-20mm, the long side contacts the precision wedge block 22, and the short side is connected to the pull rod 21; the contact surface of the two is an inclined surface, the inclined surface angle is between 35°-45°, and a wear-resistant coating is provided on the contact surface of the precision wedge block 22 and the wedge pull block 23, the coating thickness is between 0-0.05mm, and the precision wedge block 22 and the wedge pull block 23 are respectively provided with a wear-resistant coating, and the coating thickness is between 0-0.05mm. It is made of ceramic material, and a pin hole is provided at the connection part between the wedge block 23 and the pull rod 21, and the pin is firmly connected with the wedge block 23 and the pull rod 21; a protective device is provided around the precision wedge block 22 and the wedge block 23, and the protective device adopts a combination of a metal protective plate and a rubber buffer pad. The metal protective plate is made of stainless steel material with a thickness of 2-3mm, and the rubber buffer pad is made of high elastic rubber material with a thickness of 1-2mm, and is provided between the metal protective plate and the precision wedge block 22 and the wedge block 23; When it is necessary to lock the position of the clamp body on the X-axis slide 1, the upper chamber of the rear piston 19 is exhausted, and the locking spring 20 pushes the precision wedge block 22 to cooperate with the wedge pull block 23 through the pull rod 21; due to the inclined surface structure of the precision wedge block 22 and the wedge pull block 23 and the wear-resistant coating on the contact surface of the two, the force can be effectively transmitted, and the precision wedge block 22 presses the guide rail 2 horizontally, thereby achieving locking; when it is necessary to move the clamp position, the upper chamber of the rear piston 19 is controlled to be ventilated, and the piston 11 overcomes the resistance of the locking spring 20 to press the pull rod 21 and the wedge pull block 23 downward, so that the wedge block is loosened without horizontal lateral force, thereby eliminating the friction locking force between the clamp body and the guide rail; after the clamp is loosened from the guide rail, the lower positioning device cylinder 4 is actuated, and the pin is inserted into the bottom positioning hole of the clamp seat 6, and then the X-axis slide 1 is moved to adjust the clamp position; A sensor 18 is installed inside the clamp base plate 17, and the sensor is connected to the sensor cable 25; the clamp base plate 17 is connected to the two guide rods 14 on the front side of the clamp, and the guide rods 14 float up and down through two linear bearings 15 built into the left and right sides of the clamp seat 6; the guide rods 14 are made of high-strength alloy steel, and their diameter is between 10-15mm and their length is between 100-150mm; threaded structures are provided at both ends of the guide rods 14, and the thread length is between 10-15mm, which is used to connect with the clamp base plate 17 and the clamp seat 6; the pitch of the thread is between 1.5-2mm, and standard thread specifications are adopted for easy installation and disassembly; a lubrication channel is provided in the middle of the guide rod 14, and the diameter of the lubrication channel is between 2-3mm; the lubrication channel runs through the entire length of the guide rod 14, and can provide lubrication for the contact between the guide rod 14 and the linear bearing 15; sealing plugs are provided at both ends of the lubrication channel, and the sealing plugs are made of rubber material to prevent lubricating oil leakage; an anti-loosening device is provided at the connection between the guide rod 14 and the clamp base plate 17 and the clamp seat 6, and the anti-loosening device adopts a combination of a spring washer and a nut, the thickness of the spring washer is between 1-2mm, and the nut adopts a high-strength nut, which can prevent the guide rod 14 from loosening during operation; During the movement of the plate, if it encounters an uneven obstacle, the clamp base plate 17 can drive the plate 8 as a whole to float up and down through the guide rod 14 to avoid it; when the sensor 18 detects the position change of the plate 8, the signal is transmitted through the sensor cable 25; at the same time, the guide rod 14 floats up and down in the linear bearing 15, and the lubricating oil in its lubrication channel can reduce the friction between the guide rod 14 and the linear bearing 15, ensuring the smooth floating process; the anti-loosening device ensures the stability of the connection between the guide rod 14, the clamp base plate 17 and the clamp seat 6; The clamp seat 6 is designed as a split structure, including a bottom fixed seat and a detachable upper cover; the bottom fixed seat is tightly connected to the X-axis slide 1, and adopts a high-precision positioning key and positioning pin combination; the number of positioning keys is two, distributed longitudinally along the bottom of the clamp seat 6, and the cross-sectional shape is rectangular, with a length of 20-30mm and a width of 5-8mm; the number of positioning pins is three, distributed in a triangular shape at the bottom of the clamp seat 6, and the diameter of the positioning pins is between 8-12mm; the detachable upper cover is connected to the bottom fixed seat by bolts or buckles; at the bottom A slot and a buckle structure are provided at the connecting edge of the fixed seat and the detachable upper cover, the depth of the slot is between 3-5mm, the width is between 4-6mm, the thickness of the buckle is between 2-3mm, and the length is between 10-15mm; a sealing rubber strip is provided on the contact surface of the slot and the buckle, and the thickness of the sealing rubber strip is between 1-2mm; a reinforcing rib structure is provided inside the clamp seat 6, and the reinforcing rib is made of high-strength aluminum alloy material, and the thickness is between 3-5mm and the height is between 10-15mm; the distribution of the reinforcing ribs is in a grid shape; The split structure of the clamp seat 6 facilitates the maintenance and replacement of the internal parts of the clamp; when the inside of the clamp needs to be inspected or repaired, only the detachable upper cover needs to be removed; the high-precision connection between the bottom fixed seat and the X-axis slide 1 ensures that the installation position of the clamp seat 6 on the X-axis slide 1 is accurate, and the installation position error is within ±0.05mm; the slot and buckle structure and the sealing rubber strip can prevent dust and impurities from entering the inside of the clamp; the reinforcing rib structure improves the overall strength and rigidity of the clamp seat 6 and prevents the clamp seat 6 from deformation during operation; The tooth nail plate 9 is made of composite wear-resistant material, and its structure is flat, with a thickness of 6-10mm; the upper surface of the tooth nail plate 9 is provided with tooth grooves corresponding to the tooth nails 28, the depth of the tooth groove is between 2-3mm, the width is between 3-5mm, and the spacing between adjacent tooth grooves is between 5-8mm; the lower surface of the tooth nail plate 9 is provided with a groove for installing the elastic buffer pad 31, and the depth of the groove is 1-2mm. Usually, when the plate 8 is placed in the jaw position of the clamp, the plate will push the positioning pin 29 and the positioning block 30 on the front side, so that the internal push rod on the front side of the clamp moves backward; the built-in sensor 18 on the front side of the clamp will detect the position change of the push rod, and when the position is confirmed to be in place, a signal will be sent; when all three clamps are confirmed to be in place, the system will Initiate a locking command; at this time, high-pressure gas enters the lower chamber of the piston 11, pushing the piston rod 12 to move upward; the piston rod 12 is connected to the upper clamping plate 7, and the upper clamping plate 7 will move downward under the drive of the piston rod 12, and the tooth nails 28 at the front end thereof will penetrate the plate 8, and cooperate with the tooth nail plate 9 to achieve clamping of the plate 8; since the tooth nails 28 at the front end of the upper clamping plate 7 are made of alloy hardened material, they have good hardness and penetration ability, and the tooth nail plate 9 is made of composite wear-resistant material and has a corresponding tooth groove structure with the tooth nails 28, which can ensure the stability of clamping; and an elastic buffer pad 31 is provided between the tooth nail plate 9 and the clamp seat 6, which can absorb the impact between the plate 8 and the clamp during the clamping process and protect the surface of the plate 8 from damage; The sensor 18 installed inside the clamp bottom plate 17 is connected to the sensor cable 25, and the sensor cable 25, the air pipe and related joints are built into the clamp structure; the sensor cable 25 is introduced into the customized hollow lengthened screw 13 through the internal wire groove, and finally comes out from the top front cylinder and merges with the air pipeline; all joints and lines are sealed and protected by the top cover plate 33; the design and layout of the air pipe and related joints should ensure that the gas can smoothly enter and discharge various required parts, and at the same time avoid gas leakage; The signal detected by the sensor 18 is transmitted through the sensor cable 25 so that the system can make corresponding decisions based on the signal, such as initiating a locking command, etc.; the air pipe and related joints are responsible for the delivery of gas. When the piston 11 and other components need to be driven by gas, the gas can accurately reach the corresponding parts through the air pipe and related joints to achieve corresponding actions, such as the up and down movement of the piston 11, etc.; the sealing protection function of the top cover plate 33 can prevent dust, impurities, etc. from entering the interior of the clamp, protect the sensor cable 25 and the air pipe and related joints from damage, and ensure the normal operation of the clamp; During the processing of the CNC turret punch press, the clamp can automatically adjust its position and clamp the plate according to the size of the plate and the processing requirements; when processing sheet metal parts of different sizes, the clamp can be controlled by system programming, intelligently move to the appropriate position, and then clamp the plate for processing; during the processing, if the plate needs to be moved to a different processing position, the clamp can move with the plate while ensuring clamping, and the clamping force can be adjusted as needed; The clamp base plate and the clamp seat body can automatically float and adjust the clamp height according to the working conditions of the external work surface, protecting the clamp from external impact and causing failure; at the same time, the elastic buffer pad between the tooth nail plate and the clamp seat can absorb the impact between the plate and the clamp, protecting the plate surface from damage; The clamp adopts a fully enclosed design as a whole, with no exposed cables and pipes on the outside, which avoids scratches by the cross-section of the metal plate and greatly improves the service life. At the same time, each component inside the clamp adopts a reasonable structural design and material selection, such as high-performance sealing rings to prevent gas leakage, and wear-resistant coatings to improve the hardness and wear resistance of the clamping surface, further extending the service life of the clamp.

[0020] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fully enclosed automatic clamping pliers, comprising a plate clamping mechanism and a clamp automatic locking mechanism, characterized in that: The plate clamping mechanism comprises an upper clamping plate (7), a clamping base plate (17) and a piston (11), and the upper clamping plate (7) is connected to the piston (11) via a piston rod (12), the piston (11) is located in a self-made cylinder body (5), a tooth nail (28) is installed at the front end of the upper clamping plate (7), and the lower part cooperates with the tooth nail plate (9), when the plate (8) pushes the positioning pin (29) and the positioning block (30), after the sensor (18) confirms that the position is in place, high-pressure gas enters the lower chamber of the piston (11), so that the piston rod (12) moves upward and drives the upper clamping plate (7) downward to clamp the plate (8); The clamp base plate (17) is connected to the clamp seat (6) via a guide rod (14), and the guide rod (14) passes through a linear bearing (15) to achieve up and down floating; The automatic locking mechanism of the clamp comprises a rear piston (19), a pull rod (21), a precision wedge block (22), a wedge pull block (23) and a locking spring (20). When the upper chamber of the rear piston (19) is exhausted, the locking spring (20) pushes the precision wedge block (22) to cooperate with the wedge pull block (23) through the pull rod (21) to achieve horizontal compression of the guide rail (2), thereby locking the position of the clamp body on the X-axis slide (1); by controlling the ventilation of the upper chamber of the rear piston (19), the piston (11) overcomes the resistance of the locking spring (20) and presses the pull rod (21) and the wedge pull block (23) downward to achieve separation of the clamp from the guide rail (2), and the positioning pin (3) cooperates with the cylinder (4) to move, and the pin is inserted into the positioning hole at the bottom of the clamp seat (6), and then the X-axis slide (1) is moved to achieve clamp position adjustment.

2. The fully enclosed automatic clamping pliers according to claim 1, characterized in that: The sensor (18) installed inside the clamp base plate (17) is connected to the sensor cable (25). The sensor cable (25) and the air pipe and related joints are built into the clamp structure, hidden by the internal wire groove and the customized hollow extension screw (13), and finally come out from the top front cylinder body and merge with the air pipeline. All joints and lines are sealed and protected by the top cover plate (33).

3. The fully enclosed automatic clamping pliers according to claim 1, characterized in that: A tooth nail (28) made of a hardened alloy material is installed at the front end of the upper clamping plate (7), and the tooth nail plate (9) is made of a composite wear-resistant material.

4. The fully enclosed automatic clamping pliers according to claim 1, characterized in that: The clamp seat (6) is designed as a split structure, and the clamp seat (6) comprises a bottom fixing seat and a detachable upper cover, the bottom fixing seat is fastened to the X-axis slide (1), and the detachable upper cover is connected to the bottom fixing seat by bolts or buckles.

5. The fully enclosed automatic clamping pliers according to claim 1, characterized in that: An elastic buffer pad (31) is provided between the tooth nail plate (9) and the clamp seat (6) for absorbing the impact between the plate (8) and the clamp during the clamping process, thereby protecting the surface of the plate (8) from damage.

6. The fully enclosed automatic clamping pliers according to claim 1, characterized in that: The contact surfaces of the upper clamping plate (7) and the tooth nail plate (9) are treated with a wear-resistant coating to improve the hardness and wear resistance of the clamping surface, reduce the wear caused by long-term clamping, and ensure the long-term stable operation of the clamp. The opening and closing actions of the upper clamping plate (7) are controlled by a precise transmission mechanism to ensure that the clamping force can be accurately adjusted.

7. The fully enclosed automatic clamping pliers according to claim 1, characterized in that: The clamp base plate (17) is connected to two guide rods (14) on the front side of the clamp, and the guide rods (14) are floated up and down through two linear guide bearings (15) built into the left and right sides of the clamp seat (6), so as to ensure that when the plate (8) encounters an uneven obstacle during movement, the clamp base plate (17) can drive the plate (8) to float up and down through the guide rods (14) as a whole to avoid it.

8. The fully enclosed automatic clamping pliers according to claim 1, characterized in that: The rear piston (19) is in an overall cylindrical structure, with a head diameter slightly larger than a tail diameter, the head diameter being between 40 and 50 mm, and the tail diameter being between 35 and 45 mm. The piston head is provided with a plurality of sealing ring grooves, the number of which is 3 to 5, the depth being between 2 to 3 mm, the width being between 3 to 5 mm, and the spacing between adjacent sealing ring grooves being between 4 to 6 mm. A high-performance sealing ring is installed in the sealing ring groove, the sealing ring being made of fluororubber material. A connecting hole for a pull rod (21) is provided in the middle of the piston, the diameter of the connecting hole being within the matching tolerance of the outer diameter of the pull rod (21), thereby ensuring a firm connection between the pull rod (21) and the piston. A flat surface in contact with the bottom of the cylinder body is provided at the tail of the piston. The cylinder body where the rear piston (19) is located is made of a high-strength aluminum alloy material, the wall thickness of which is between 5 and 8 mm. A cooling channel is provided inside the cylinder body, the diameter of the cooling channel being between 3 and 5 mm, and being distributed in a spiral shape in the cylinder body wall.

9. The fully enclosed automatic clamping pliers according to claim 1, characterized in that: The precision wedge block (22) is a trapezoidal structure, with a long side length of 30-40 mm and a short side length of 15-25 mm. The long side contacts the guide rail (2) and the short side contacts the wedge pull block (23). The wedge pull block (23) is also a trapezoidal structure, with a long side length of 25-35 mm and a short side length of 10-20 mm. The long side contacts the precision wedge block (22) and the short side is connected to the pull rod (21). The contact surfaces of the two are inclined surfaces, with an angle of the inclined surface of 35°-45°. A wear-resistant coating is provided on the contact surfaces of the precision wedge block (22) and the wedge pull block (23), and the coating thickness is 0. The precision wedge block (22) and the wedge block (23) are provided with a protective device around them. The protective device is a combination of a metal protective plate and a rubber buffer pad. The metal protective plate is made of stainless steel with a thickness of 2-3 mm. The rubber buffer pad is made of a highly elastic rubber material with a thickness of 1-2 mm. The protective device is provided between the metal protective plate and the precision wedge block (22) and the wedge block (23).

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