Automatic gripping device for valve seat assembly

Abstract

The application relates to the technical field of base grabbing and transporting, and discloses an automatic grabbing device for valve base assembly, which comprises conveying equipment and a grabbing assembly. Grabbing frames are fixedly installed on the front and rear walls of the conveying equipment, an output rod is slidably penetrated through the top of the grabbing frame, and an output plate is fixedly installed at the bottom of the output rod. The grabbing assembly comprises an elastic expansion plate, a limiting frame, a fitting plate, a limiting plate, a protection frame, a protection groove, a base, a fitting groove and a roller. The elastic expansion plate is fixedly installed at the bottom of the output plate, the limiting frame is fixedly penetrated through the upper and lower walls of the output plate, and the fitting plate is slidably installed on the inner wall of the limiting frame. If the base position seriously deviates from the calibration position, the limiting plate moves to the front side, contacts the inner wall of the protection groove and limits and pauses the grabbing operation of the output plate. After the output plate is paused, an operator can correct the base position, so that the transport accidents caused by the wrong-position grabbing and transporting are avoided.

Description

Technical Field

[0001] This invention relates to the field of base gripping and transportation technology, and in particular to an automatic gripping device for assembling valve bases. Background Technology

[0002] The automatic gripping device for valve base assembly is used for assembling special gas valves. The valve is a core control component, and the quality of its base assembly directly determines the sealing and safety of the conveying system. In order to improve the gripping and assembly efficiency, standard parts are usually gripped.

[0003] Patent CN216945186U relates to an automatic gripping device and equipment. The automatic gripping device includes: a main support frame, a translation component mounted on the main support frame, the translation component being movable within a horizontal plane of the main support frame, a vertically movable lifting component connected below the translation component, a rotatable rotating component at the bottom of the lifting component, and a gripper component at the bottom of the rotating component for clamping materials. This patented automatic gripping device integrates translation, lifting, and rotation functions. Furthermore, the gripper component is simple in structure, low in cost, and easy to mass-produce, and is also highly suitable for handling evaporator and condenser components without causing damage to them.

[0004] In the aforementioned patent, the gripper assembly not only meets the requirements of simple structure, low cost, and easy mass production, but is also very suitable for handling evaporator and condenser components without causing damage to them. However, the assembly of special gas valves requires precise docking. If it is difficult to dock precisely during gripping, it will cause scratches or positioning deviations on the base during subsequent assembly operations, which will lead to subsequent leakage of special gases. The existing equipment does not meet the requirements. Therefore, this invention improves an automatic gripping device for valve base assembly to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing an automatic gripping device for assembling valve bases.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An automatic gripping device for assembling valve bases includes a conveying device and a gripping assembly. A gripping frame is fixedly installed on the front and rear walls of the conveying device. An output rod slides through the top of the gripping frame, and an output plate is fixedly installed at the bottom of the output rod. The gripping assembly includes an elastic telescopic plate, a limiting frame, a mating plate, a protective frame, a protective groove, a base, a mating groove, and rollers. The elastic telescopic plate is fixedly installed at the bottom of the output plate. The limiting frame is fixedly installed through the upper and lower walls of the output plate. The mating plate is slidably installed on the inner wall of the limiting frame, and the protective frame is fixedly installed through the upper and lower walls of the gripping frame. The protective groove is located on the rear side of the protective frame. The base is located on the top of the conveying device, and the mating groove is located on the top of the base. The rollers are rotatably installed on the front side of the output plate. The elastic telescopic plate grips the base, and the limiting plate limits the output plate. If the base position deviates significantly from the calibrated position, the limiting plate moves forward to contact the inner wall of the protective groove and limits the output plate, pausing the gripping operation.

[0008] As a preferred embodiment of the present invention, the bottom of the free end of the elastic telescopic plate is set as an inclined surface, and a sealing ring is provided between the limiting frame and the fitting plate. The sealing ring can increase the sealing between the limiting frame and the fitting plate. A sealing strip is provided between the limiting frame and the limiting plate. The sealing strip can increase the sealing between the limiting frame and the limiting plate. The free end of the elastic telescopic plate moves towards the base to reset and grips the base.

[0009] As a preferred embodiment of the present invention, the elastic telescopic plate is filled with liquid, the limiting frame extends through the top of the output plate, the fitting groove is used to position the base, and the fitting plate moves downward and fits into the fitting groove without squeezing the base.

[0010] As a preferred embodiment of the present invention, it further includes an anti-overlapping component and a protective component. The anti-overlapping component is used to prevent the tops of multiple bases from overlapping, and the protective component is used to prevent the conveyor belt of the conveying equipment from wrinkling. The anti-overlapping component includes an elastic telescopic rod, a middle partition, a transition plate, and a transition spring. The anti-overlapping frame can separate the overlapping bases by moving backward using its own arc shape. The elastic telescopic rod is fixedly installed on the top left side of the conveying equipment, the middle partition is fixedly installed on the free end of the elastic telescopic rod, the transition plate slides through the front side of the conveying equipment, and the transition spring is disposed between the conveying equipment and the transition plate, and the transition spring can support the transition plate.

[0011] As a preferred embodiment of the present invention, the anti-overlapping assembly further includes an anti-overlapping frame, an anti-overlapping spring, and an anti-overlapping groove. The anti-overlapping groove is formed on the top of the transition plate, the anti-overlapping frame is slidably installed on the inner wall of the anti-overlapping groove, and the anti-overlapping spring is disposed between the anti-overlapping frame and the transition plate. The anti-overlapping spring can support the anti-overlapping frame. When the transition plate moves backward, it will contact the base and squeeze and correct the base.

[0012] As a preferred embodiment of the present invention, the rear left side of the partition plate is provided as an arc surface. By providing an arc surface to the rear left side of the partition plate, the frictional force when the partition plate contacts the transition plate can be reduced. The rear top side of the transition plate is provided as an arc surface, and the partition plate abuts against the roller.

[0013] As a preferred embodiment of the present invention, the protective assembly includes a rack, a one-way groove, a protective rod, a gear, a one-way plate, and a one-way block. The protective rod rotates and, under its own centrifugal force, throws out foreign objects between the right side of the protective rod and the conveying equipment. The rack is fixedly installed on the front side of the partition plate. The one-way groove is opened on the front side of the conveying equipment. The protective rod rotates and penetrates the front and rear walls of the conveying equipment. The gear is fixedly installed on the circumferential surface of the protective rod. The one-way plate is rotatably installed on the inner wall of the one-way groove. The one-way block is fixedly installed on the inner wall of the one-way groove.

[0014] In a preferred embodiment of the present invention, the rack meshes with the gear, the one-way plate abuts against the one-way block, a torsion spring is provided between the one-way plate and the one-way groove to support the one-way plate, and a spring is provided between the protective rod and the conveying device to support the protective rod. The one-way plate slowly deforms, causing the gear to slowly rotate clockwise, and the slow clockwise rotation of the gear causes the protective rod to slowly rotate.

[0015] The present invention has the following beneficial effects:

[0016] 1. This invention uses an elastic telescopic plate to move its free end towards the base to reset and grip the base. The elastic telescopic plate relies solely on its own elasticity to achieve reset and gripping, which can reduce the probability of scratches on the top of the base. If the base position deviates significantly from the calibrated position, the limiting plate will move forward to contact the inner wall of the protective groove and limit the output plate to pause the gripping operation. If the base is still mistakenly gripped and transported to the assembly station after deviation, it will cause serious misalignment between the base and the valve body or sealing ring. Subsequent assembly will result in forced pressing, which will damage the gas circuit sealing structure and create a potential leakage hazard for subsequent gas transportation. After the output plate stops operating, the operator can readjust the base position, thereby avoiding transportation accidents caused by misaligned gripping and transportation. The contact between the mating plate and the inner wall of the mating groove can prevent the base from shaking during gripping. The contact limit between the mating plate and the mating groove can stably fix the base and prevent it from shaking during transportation, thereby avoiding damage to the base structure.

[0017] 2. In this invention, the transition plate moves backward to contact the base and squeezes and corrects the base. The transition plate can actively correct the base by squeezing backward, thereby adjusting the base to the center gripping position, thus avoiding gripping offset caused by initial position deviation and further improving the efficiency of base gripping operation.

[0018] 3. In this invention, when the transition plate moves to the rear, it will drive the anti-overlapping frame to move to the rear. The anti-overlapping frame can separate the overlapping bases by relying on its own arc shape. The overlapping bases are prone to tipping over due to gripping force. The arc structure of the anti-overlapping frame can smoothly insert into the overlapping gap and separate the stacked bases. This can prevent the overlapping bases on the rear side from moving and tipping over when gripping the previous base.

[0019] 4. This invention uses the rotation of the protective rod to throw out foreign objects between the right side of the protective rod and the conveying equipment under its own centrifugal force. Foreign objects are easy to adhere to the sealing surface of the base or the threaded hole, which will cause the seal to fail during subsequent assembly. The protective rod can continuously intercept foreign objects on the surface of the conveying equipment, and the centrifugal force can avoid the accumulation of foreign objects and secondary contamination of the base.

[0020] 5. This invention uses a gear to slowly rotate clockwise, causing the guard rod to rotate slowly. The gear drives the guard rod to rotate slowly, which can significantly reduce the frictional resistance between the guard rod and the moving conveyor belt. This avoids the conveyor belt from being pulled and wrinkled due to excessive friction, ensuring the smooth operation of the conveyor belt and further improving the stability of the gripping. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure proposed in this invention;

[0022] Figure 2 This is a schematic diagram of the position structure of the gripping frame and output rod proposed in this invention;

[0023] Figure 3 The present invention proposes Figure 2 Enlarged schematic diagram of section A in the middle;

[0024] Figure 4 This is a schematic diagram of the position and structure of the conveying device and transition plate proposed in this invention;

[0025] Figure 5 This is a schematic diagram of the positional structure of the output rod and output plate proposed in this invention;

[0026] Figure 6 This is a schematic diagram of the positional structure of the transition plate and transition spring proposed in this invention;

[0027] Figure 7 This is a schematic diagram of the gear and rack position structure proposed in this invention.

[0028] In the diagram: 1. Conveying equipment; 2. Grabbing frame; 3. Output rod; 4. Output plate; 5. Elastic telescopic plate; 6. Limiting frame; 7. Fitting plate; 8. Limiting plate; 9. Protective frame; 10. Protective groove; 12. Fitting groove; 13. Roller; 141. Elastic telescopic rod; 142. Middle partition plate; 143. Transition plate; 144. Transition spring; 145. Anti-overlapping frame; 146. Anti-overlapping spring; 147. Anti-overlapping groove; 151. Rack; 152. One-way groove; 153. Protective rod; 154. Gear; 155. One-way plate; 156. One-way block. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0030] Reference Figure 1-6 One embodiment of the present invention is: an automatic gripping device for assembling valve bases, including a conveying device 1 and a gripping assembly. A gripping frame 2 is fixedly installed on the front and rear walls of the base conveying device 1. An output rod 3 slides through the top of the base gripping frame 2, and an output plate 4 is fixedly installed at the bottom of the base with the output rod 3. The base gripping assembly includes an elastic telescopic plate 5, a limiting frame 6, a fitting plate 7, a limiting plate 8, a protective frame 9, a protective groove 10, a base, a fitting groove 12, and rollers 13. The elastic telescopic plate 5 is fixedly installed at the bottom of the output plate 4, and the limiting frame 6 is fixedly installed through the upper and lower walls of the output plate 4. The base fitting plate 7 is slidably installed on the inner wall of the limiting frame 6, the base limiting plate 8 is slidably installed on the inner wall of the limiting frame 6, the base protection frame 9 is fixedly installed through the upper and lower walls of the gripping frame 2, the base protection groove 10 is opened on the rear side of the protection frame 9, the base is set on the top of the conveying equipment 1, the base fitting groove 12 is opened on the top of the base, the base roller 13 is rotatably installed on the front side of the output plate 4, the base elastic telescopic plate 5 is used to grip the base, the base limiting plate 8 is used to limit the output plate 4, after the output plate 4 stops working, the operator can readjust the position of the base, thereby avoiding transportation accidents caused by misaligned gripping and transportation.

[0031] The bottom of the free end of the elastic telescopic plate 5 is set as an inclined surface. A sealing ring is provided between the base limiting frame 6 and the mating plate 7. The sealing ring can increase the sealing between the limiting frame 6 and the mating plate 7. A sealing strip is provided between the base limiting frame 6 and the limiting plate 8. The sealing strip can increase the sealing between the limiting frame 6 and the limiting plate 8. The free end of the elastic telescopic plate 5 moves towards the base to reset and grasp the base. The elastic telescopic plate 5 relies solely on its own elasticity to achieve reset and grasp, which can reduce the probability of scratches on the top of the base.

[0032] The base elastic telescopic plate 5 is filled with liquid, the base limiting frame 6 passes through the top of the output plate 4, and the base mating groove 12 is used to position the base. When the mating plate 7 moves downward, it will fit with the mating groove 12 without squeezing the base. The contact limit between the mating plate 7 and the mating groove 12 can stably fix the base and prevent it from sliding during transportation, thereby avoiding damage to the base structure.

[0033] During operation: When the base is transported to the bottom of the output plate 4 by the conveying equipment 1, the conveying equipment 1 stops working. The top of the gripping frame 2 is equipped with a linear motor and the output end of the linear motor is fixedly connected to the output plate 4. The operation of the linear motor drives the output rod 3 to move downward. The downward movement of the output rod 3 drives the output plate 4 to move downward. The downward movement of the output plate 4 drives the elastic telescopic plate 5 to move downward. The downward movement of the elastic telescopic plate 5 causes its free end to contact the base and squeeze the base.

[0034] The free end of the elastic telescopic plate 5 retracts under the reaction force of the pressing base. At the same time, the output rod 3 continues to drive the output plate 4 and the elastic telescopic plate 5 to move downward. The elastic telescopic plate 5 continues to move downward, causing its free end to detach from the contact with the base. After the free end of the elastic telescopic plate 5 detaches from the contact with the base, the free end of the elastic telescopic plate 5 moves towards the base and resets under its own elastic force. The free end of the elastic telescopic plate 5 moves towards the base and resets, and grasps the base. At the same time, the downward movement of the output plate 4 will drive the limit frame 6 to move downward. The downward movement of the limit frame 6 will drive the mating plate 7 to move downward. If the position of the base does not deviate from the calibrated position, the downward movement of the mating plate 7 will engage with the mating groove 12 and will not cause compression to the base. If the position of the base deviates significantly from the calibrated position;

[0035] When the mating plate 7 moves downward, it contacts the top of the base and squeezes the base. The mating plate 7 moves upward due to the reaction force of the squeezed base. The upward movement of the mating plate 7 squeezes the liquid inside the limiting frame 6. The liquid inside the limiting frame 6 moves towards the limiting plate 8 due to the squeeze of the mating plate 7. The liquid inside the limiting frame 6 moves towards the limiting plate 8 and squeezes the limiting plate 8. The limiting plate 8 moves forward due to the squeeze of the liquid inside the limiting frame 6. The limiting plate 8 moves forward and contacts the inner wall of the protective groove 10, limiting and pausing the gripping operation of the output plate 4.

[0036] Reference Figure 1-7Based on the above embodiments, another embodiment of the present invention further includes an anti-overlapping component and a protective component. The base anti-overlapping component is used to prevent the tops of multiple bases from overlapping, and the base protective component is used to prevent the conveyor belt of the conveying device 1 from wrinkling. The base anti-overlapping component includes an elastic telescopic rod 141, a middle partition plate 142, a transition plate 143, and a transition spring 144. The base elastic telescopic rod 141 is fixedly installed on the top left side of the conveying device 1, the base middle partition plate 142 is fixedly installed on the free end of the elastic telescopic rod 141, the base transition plate 143 slides through the front side of the conveying device 1, and the base transition spring 144 is disposed between the conveying device 1 and the transition plate 143. The transition spring 144 can support the transition plate 143, and the transition plate 143 can actively correct its deviation by squeezing backward, adjusting the base to the center gripping position, thereby avoiding gripping offset caused by initial position deviation and further improving the efficiency of base gripping operation.

[0037] The base anti-stacking assembly also includes an anti-stacking frame 145, an anti-stacking spring 146, and an anti-stacking groove 147. The base anti-stacking groove 147 is formed on the top of the transition plate 143. The base anti-stacking frame 145 is slidably installed on the inner wall of the anti-stacking groove 147. The base anti-stacking spring 146 is disposed between the anti-stacking frame 145 and the transition plate 143. The anti-stacking spring 146 can support the anti-stacking frame 145. When the transition plate 143 moves backward, it will contact the base and squeeze and correct the base. The arc-shaped structure of the anti-stacking frame 145 can be smoothly inserted into the overlapping gap to separate the stacked bases. This can prevent the overlapping bases behind from moving and tipping over when the previous base is grabbed.

[0038] The rear left side of the base partition 142 is set as an arc surface. By setting the rear left side of the partition 142 as an arc surface, the friction between the partition 142 and the transition plate 143 can be reduced. The rear top side of the base transition plate 143 is set as an arc surface. The base partition 142 abuts against the roller 13.

[0039] The base protection assembly includes a rack 151, a one-way groove 152, a protective rod 153, a gear 154, a one-way plate 155, and a one-way block 156. The base rack 151 is fixedly installed on the front side of the partition plate 142. The base one-way groove 152 is opened on the front side of the conveying equipment 1. The base protective rod 153 rotates through the front and rear walls of the conveying equipment 1. The base gear 154 is fixedly installed on the circumferential surface of the protective rod 153. The base one-way plate 155 is rotatedly installed on the inner wall of the one-way groove 152. The base one-way block 156 is fixedly installed on the inner wall of the one-way groove 152. The protective rod 153 can continuously intercept foreign objects on the surface of the conveying equipment 1, and the centrifugal force can remove foreign objects to avoid the accumulation of foreign objects and secondary contamination of the base.

[0040] The base rack 151 meshes with the gear 154, the base one-way plate 155 abuts against the one-way block 156, and a torsion spring is provided between the base one-way plate 155 and the one-way groove 152 to support the one-way plate 155. A spring is provided between the base guard rod 153 and the conveyor 1 to support the guard rod 153. The one-way plate 155 slowly deforms, causing the gear 154 to slowly rotate clockwise. The slow clockwise rotation of the gear 154 causes the guard rod 153 to slowly rotate. The gear 154 drives the guard rod 153 to rotate slowly, which can greatly reduce the frictional resistance between the guard rod 153 and the moving conveyor belt, thereby avoiding the formation of wrinkles due to excessive friction pulling the conveyor belt, ensuring the smooth operation of the conveyor belt and further improving the stability of gripping.

[0041] During operation, the output plate 4 moves downward, causing the roller 13 to move downward. The roller 13 moves downward and comes into contact with the middle partition 142, squeezing the middle partition 142. The middle partition 142 moves to the left due to the squeezing of the roller 13. The leftward movement of the middle partition 142 pulls the free end of the elastic telescopic rod 141. The free end of the elastic telescopic rod 141 moves to the left due to the pull of the middle partition 142 and stores force. At the same time, the leftward movement of the middle partition 142 comes into contact with the arc surface of the transition plate 143 and squeezes the transition plate 143. The transition plate 143 moves backward due to the squeezing of the middle partition 142. The backward movement of the transition plate 143 squeezes the transition spring 144.

[0042] The transition spring 144 deforms and stores force under the pressure of the transition plate 143. At the same time, the transition plate 143 moves backward and contacts the base, squeezing and correcting the base. When the transition plate 143 moves backward, it will drive the anti-overlapping frame 145 to move backward. The anti-overlapping frame 145 can separate the overlapping bases by its own arc shape. When the anti-overlapping frame 145 moves backward and contacts the overlapping bases, it will be subjected to the reaction force of squeezing the overlapping bases and move backward. The backward movement of the anti-overlapping frame 145 will pull the anti-overlapping spring 146. The anti-overlapping spring 146 deforms and stores force under the pull of the anti-overlapping frame 145. The deformation of the anti-overlapping spring 146 assists the anti-overlapping frame 145 in squeezing and correcting the base.

[0043] When the partition plate 142 moves to the left, it will cause the rack 151 to move to the left. The rack 151 moving to the left will squeeze the gear 154. The gear 154 will rotate counterclockwise due to the squeezing of the rack 151. The counterclockwise rotation of the gear 154 will drive the guard rod 153 to rotate. The rotation of the guard rod 153, under the action of its own centrifugal force, will throw out the foreign object between the right side of the guard rod 153 and the conveying device 1. When the rack 151 moves to the right and resets;

[0044] Similarly, the gear 154 will be squeezed. The gear 154 will rotate clockwise due to the squeezing of the rack 151. The clockwise rotation of the gear 154 will squeeze the one-way plate 155. At this time, the one-way plate 155 is limited by the one-way block 156 and cannot rotate counterclockwise. The one-way plate 155 cannot rotate counterclockwise, so the gear 154 will continuously squeeze the one-way plate 155 when it rotates clockwise. The one-way plate 155 will slowly deform due to the continuous squeezing of the gear 154. The slow deformation of the one-way plate 155 will cause the gear 154 to slowly rotate clockwise.

[0045] The gear 154 rotates slowly clockwise, causing the guard rod 153 to rotate slowly, thereby preventing excessive friction between the guard rod 153 and the moving conveyor 1, which would cause the conveyor belt of the conveyor 1 to wrinkle.

[0046] The above-described base is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An automatic gripping device for assembling valve seats, comprising a conveying device (1), characterized in that, It also includes a grabbing component, an anti-overlapping component and a protection component, the conveying equipment (1) is fixedly installed with a grabbing frame (2) on the front and back walls, a output rod (3) is slidably penetrated through the top of the grabbing frame (2), and an output plate (4) is fixedly installed at the bottom of the output rod (3); The grabbing component comprises an elastic expansion plate (5), a limiting frame (6), a fitting plate (7), a limiting plate (8), a protection frame (9), a protection groove (10), a fitting groove (12) and a roller (13), the elastic expansion plate (5) is fixedly installed at the bottom of the output plate (4), the limiting frame (6) is fixedly penetrated through the upper and lower walls of the output plate (4), the fitting plate (7) is slidably installed on the inner wall of the limiting frame (6), the limiting plate (8) is slidably installed on the inner wall of the limiting frame (6), the protection frame (9) is fixedly penetrated through the upper and lower walls of the grabbing frame (2), the protection groove (10) is formed in the rear side of the protection frame (9), the conveying equipment (1) is provided with a base on the top, the fitting groove (12) is formed in the top of the base, and the roller (13) is rotatably installed on the front side of the output plate (4); the elastic expansion plate (5) is used for grabbing the base, and the limiting plate (8) is used for limiting the output plate (4); The anti-overlapping component is used for preventing multiple bases from being overlapped on the top, and the protection component is used for preventing the conveying belt of the conveying equipment (1) from being pleated; The anti-overlapping component comprises an elastic expansion rod (141), a partition plate (142), a transition plate (143) and a transition spring (144), the elastic expansion rod (141) is fixedly installed on the left side of the top of the conveying equipment (1), the partition plate (142) is fixedly installed on the free end of the elastic expansion rod (141), the transition plate (143) is slidably penetrated through the front side of the conveying equipment (1), and the transition spring (144) is arranged between the conveying equipment (1) and the transition plate (143); The anti-overlapping component further comprises an anti-overlapping frame (145), an anti-overlapping spring (146) and an anti-overlapping groove (147), the anti-overlapping groove (147) is formed in the top of the transition plate (143), the anti-overlapping frame (145) is slidably installed on the inner wall of the anti-overlapping groove (147), and the anti-overlapping spring (146) is arranged between the anti-overlapping frame (145) and the transition plate (143); The protection component comprises a rack (151), a one-way groove (152), a protection rod (153), a gear (154), a one-way plate (155) and a one-way block (156), the rack (151) is fixedly installed on the front side of the partition plate (142), the one-way groove (152) is formed in the front side of the conveying equipment (1), the protection rod (153) is rotatably penetrated through the front and back walls of the conveying equipment (1), the gear (154) is fixedly installed on the circumferential surface of the protection rod (153), the one-way plate (155) is rotatably installed on the inner wall of the one-way groove (152), and the one-way block (156) is fixedly installed on the inner wall of the one-way groove (152). The rack (151) is engaged with the gear (154), the one-way plate (155) is in contact with the one-way block (156), a torsion spring is arranged between the one-way plate (155) and the one-way groove (152), and a clock spring is arranged between the protection rod (153) and the conveying device (1).

2. The automatic valve seat assembly gripping device according to claim 1, wherein The free end bottom of the elastic expansion plate (5) is provided as an inclined surface, a sealing ring is arranged between the limiting frame (6) and the fitting plate (7), and a sealing strip is arranged between the limiting plate (8) of the limiting frame (6).

3. An automatic valve seat assembly gripping device according to claim 2, wherein The elastic expansion plate (5) is internally provided with liquid, the limiting frame (6) penetrates through the top of the output plate (4), and the fitting groove (12) is used for positioning the base.

4. The automatic valve seat assembly gripping device according to claim 3, wherein The rear part of the left side of the partition plate (142) is provided as an arc surface, the top rear side of the transition plate (143) is provided as an arc surface, and the partition plate (142) is in contact with the roller (13).

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