A pneumatic gripper structure

Abstract

The present application belongs to the technical field of processing auxiliary equipment, and particularly relates to a pneumatic clamping jaw structure, which comprises a shell, a first clamping jaw, a second clamping jaw, a first special-shaped wedge block, a second special-shaped wedge block, a wedge block push-pull rod, a push-pull rod piston and a locking structure, the first clamping jaw is connected with the first special-shaped wedge block, the second clamping jaw is connected with the second special-shaped wedge block, the first special-shaped wedge block and the second special-shaped wedge block are both slidably arranged in the shell, one end of the wedge block push-pull rod is connected with the push-pull rod piston after penetrating through the shell, and the other end of the wedge block push-pull rod is arranged between the first special-shaped wedge block and the second special-shaped wedge block; the first special-shaped wedge block and the second special-shaped wedge block are both connected with the locking structure. Through the ingenious structural design, the push-pull rod piston is pushed by gas to move the wedge block push-pull rod, so as to drive the first special-shaped wedge block and the second special-shaped wedge block to move to close or open to a specified position, then the locking piston is pushed by gas to insert the wedge-shaped pin into the locking area, so as to realize locking and increase clamping force.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of processing auxiliary equipment, and particularly relates to a pneumatic clamping jaw structure. BACKGROUND

[0002] In the automatic assembly process, the pneumatic clamping jaw structure is widely used in the clamping and transferring of various workpieces. The clamping jaw structure of the prior art adopts the lever principle for clamping. The clamping force of the pneumatic clamping jaw is consistent from the loosening to the clamping state, and the clamping jaw cannot be locked in the final clamping state. The clamping force is limited. In the case of external force, the clamping jaw is easy to loosen, resulting in unstable clamping. Moreover, the pneumatic clamping jaw of the prior art cannot meet the requirements in load, rigidity and strength.

[0003] Therefore, the present application aims to provide a pneumatic clamping jaw structure which has a clever structure design, high load, high rigidity and high strength, and locking function, so as to further improve the clamping force. According to the test, the clamping force of the present application can reach 1 ton, and the thrust can reach 5 tons. SUMMARY

[0004] The present application aims to provide a pneumatic clamping jaw structure which has a clever structure design, high load, high rigidity and high strength, and locking function, so as to further improve the clamping force. According to the test, the clamping force of the present application can reach 1 ton, and the thrust can reach 5 tons.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0006] A pneumatic clamping jaw structure, comprising a shell, a first clamping jaw, a second clamping jaw, a first special-shaped wedge block, a second special-shaped wedge block, a wedge block push-pull rod, a push-pull rod piston and a locking structure, the first clamping jaw is connected with the first special-shaped wedge block, the second clamping jaw is connected with the second special-shaped wedge block, the first special-shaped wedge block and the second special-shaped wedge block are slidably arranged in the shell, one end of the wedge block push-pull rod passes through the shell and is connected with the push-pull rod piston, the other end of the wedge block push-pull rod is arranged between the first special-shaped wedge block and the second special-shaped wedge block, and the upward and downward movement of the wedge block push-pull rod can realize the closing or separation of the first clamping jaw and the second clamping jaw.

[0007] The first special-shaped wedge block and the second special-shaped wedge block are connected with the locking structure.

[0008] As an improvement of the pneumatic clamping jaw structure, when the wedge block push-pull rod moves downward, the first special-shaped wedge block and the second special-shaped wedge block move towards each other and realize the closing of the first clamping jaw and the second clamping jaw.

[0009] When the wedge-shaped push-pull rod moves upward, the first and second special-shaped wedge blocks move away from each other and achieve separation of the first and second clamping jaws.

[0010] As an improvement of the pneumatic clamping jaw structure, the locking structure comprises a locking cylinder, a locking piston, a first wedge-shaped pin and a second wedge-shaped pin, one end of the first wedge-shaped pin is connected with the locking piston, and the side of the first special-shaped wedge block is provided with a first locking area matched with the wedge-shaped part of the first wedge-shaped pin; one end of the second wedge-shaped pin is connected with the locking piston, and the side of the second special-shaped wedge block is provided with a second locking area matched with the wedge-shaped part of the second wedge-shaped pin; and the locking piston is arranged in the locking cylinder. When locking is needed, air is supplied from above the locking piston, the locking piston pushes the first and second wedge-shaped pins to move toward the first and second special-shaped wedge blocks respectively, and enters the first and second locking areas, thereby achieving the locking function.

[0011] When unlocking is needed, air is supplied to the locking piston, the locking piston pulls the first and second wedge-shaped pins to move away from the first and second locking areas respectively, thereby achieving the unlocking function.

[0012] As an improvement of the pneumatic clamping jaw structure, a magnetic switch is connected to the locking cylinder.

[0013] As an improvement of the pneumatic clamping jaw structure, the first and second clamping jaws form a containing space when they are clamped together.

[0014] As an improvement of the pneumatic clamping jaw structure, the wedge block push-pull rod comprises a rod body and a push-pull part connected with one end of the rod body, the push-pull part comprises a main body part, end block parts arranged at both ends of the main body part, and a center block part arranged at the central region of the main body part, and a groove is formed between the end block parts and the center block part.

[0015] As an improvement of the pneumatic clamping jaw structure, cavities are arranged on the first and second special-shaped wedge blocks for upward and downward movement of the wedge block push-pull rod.

[0016] As an improvement of the pneumatic clamping jaw structure, the cavities are provided with protrusions matched with the grooves, and the cavities comprise moving cavities for upward and downward movement of the end block parts. As an improvement of the pneumatic clamping jaw structure, a sliding groove is formed on the shell, and the side parts of the first and second special-shaped wedge blocks are outwardly protruding and formed with sliding block parts matched with the sliding groove.

[0017] As an improvement of the pneumatic clamping jaw structure of the present application, the first and second special-shaped wedge blocks are connected with induction adjusting blocks and proximity switches.

[0018] When the workpiece needs to be clamped, gas is supplied above the push-pull rod piston to act on the push-pull rod piston, which in turn drives the wedge push-pull rod to move downward. At this time, the wedge push-pull rod acts on the first and second special-shaped wedge blocks, causing them to move towards each other, thereby achieving closure and making the first and second clamping jaws hold together to clamp the workpiece. At the same time, the locking structure locks the first and second special-shaped wedge blocks, thereby further improving the clamping force. According to tests, the clamping force of the present application can reach 1 ton, and the thrust can reach 5 tons.

[0019] The specific locking action is that gas is supplied above the locking piston, which drives the wedge-shaped pin to move towards the first and second special-shaped wedge blocks and enter the first and second locking areas, thereby achieving the effect of locking and applying force to the first and second special-shaped wedge blocks by the wedge-shaped pin.

[0020] When the workpiece needs to be released, first, gas is supplied to the locking piston to drive it to move away from the first and second special-shaped wedge blocks, thereby pulling the wedge-shaped pin out of the first and second locking areas. Then, gas is supplied below the push-pull rod piston to drive the wedge push-pull rod to move upward, causing the first and second special-shaped wedge blocks to move to the sides and achieve release.

[0021] In summary, through ingenious structural design, the present application uses gas to drive the push-pull rod piston to move the wedge push-pull rod, thereby driving the first and second special-shaped wedge blocks to move for closure or opening to the specified position. Then, gas drives the locking piston to insert the wedge-shaped pin into the first and second locking areas, thereby achieving locking, increasing clamping force, or opening force. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is one of the perspective structural schematic diagrams of the present application.

[0023] Figure 2 is another perspective structural schematic diagram of the present application.

[0024] Figure 3 is a third perspective structural schematic diagram of the present application.

[0025] Figure 4 is a top view structural schematic diagram of the present application.

[0026] Figure 5 is Figure 4 a sectional view of section A-A.

[0027] Figure 6is the front view structural schematic diagram of the present application.

[0028] Figure 7 is Figure 6 is the section view of B-B plane in the present application.

[0029] Figure 8 is one of the exploded structural schematic diagrams of the present application.

[0030] Figure 9 is the second exploded structural schematic diagram of the present application.

[0031] Figure 10 is one of the three-dimensional structural schematic diagrams of the wedge push-pull rod in the present application.

[0032] Figure 11 is the second three-dimensional structural schematic diagram of the wedge push-pull rod in the present application.

[0033] Figure 12 is one of the structural schematic diagrams of the first special-shaped wedge in the present application (the combination of the second special-shaped wedge is the same).

[0034] Figure 13 is the second structural schematic diagram of the first special-shaped wedge in the present application (the combination of the second special-shaped wedge is the same). DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0036] It should be noted that all the directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific attitude (as shown in the drawings), and if the specific attitude changes, the directionality indications also change accordingly.

[0037] In addition, the descriptions of "first", "second" and the like in the present application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of those skilled in the art, and when the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

[0038] like Figures 1 to 13 As shown, this invention provides a pneumatic gripper structure, including a housing 1, a first gripper 2, a second gripper 3, a first irregularly shaped wedge 4, a second irregularly shaped wedge 5, a wedge push-pull rod 6, a push-pull rod piston 7, and a locking structure 8. The first gripper 2 is fixedly connected to the first irregularly shaped wedge 4, and the second gripper 3 is fixedly connected to the second irregularly shaped wedge 5. Thus, the movement of the first irregularly shaped wedge 4 can drive the movement of the first gripper 2, and the movement of the second irregularly shaped wedge 5 can drive the movement of the second gripper 3. Both the first irregularly shaped wedge 4 and the second irregularly shaped wedge 5 are slidably disposed within the housing 1, allowing them to slide within the housing 1, thereby achieving opposite or opposite movements, and thus reducing or increasing the distance between the first gripper 2 and the second gripper 3, achieving clamping or releasing. One end of the wedge push-pull rod 6 passes through the housing 1 and is connected to the push-pull rod piston 7. The push-pull rod piston 7 can drive the wedge push-pull rod 6 to move up and down. The other end of the wedge push-pull rod 6 is located between the first irregular wedge 4 and the second irregular wedge 5. The up and down movement of the wedge push-pull rod 6 can realize the closing or separation of the first gripper 2 and the second gripper 3. When the first gripper 2 and the second gripper 3 are engaged, they form an accommodating space.

[0039] Specifically, when the wedge push rod 6 moves downward, the first irregular wedge 4 and the second irregular wedge 5 move towards each other and realize the closure of the first gripper 2 and the second gripper 3, thereby holding the workpiece 20.

[0040] When the wedge-shaped push-pull rod 6 moves upward, the first irregular wedge block 4 and the second irregular wedge block 5 move in opposite directions and separate the first gripper 2 and the second gripper 3, thereby causing the gripper to leave the workpiece 20.

[0041] Both the first irregular wedge 4 and the second irregular wedge 5 are connected to the locking structure 8, thereby achieving locking, increasing clamping force or opening force.

[0042] The locking structure 8 includes a locking cylinder 81, a locking piston 82, a first wedge pin 83, and a second wedge pin 84. One end of the first wedge pin 83 is connected to the locking piston 82. A first locking region 41 matching the other end (wedge portion) of the first wedge block 4 is provided on its side. One end of the second wedge pin 84 is connected to the locking piston 82. A second locking region 51 matching the other end (wedge portion) of the second wedge block 5 is provided on its side. The locking piston 82 is disposed inside the locking cylinder 81. The wedge portion is a recessed portion provided on both sides of the end of the wedge pin.

[0043] A magnetic switch 9 is connected to the locking cylinder 81, which is mainly used to determine whether the first wedge pin 83 and the second wedge pin 84 are in a locked state or an open state with the first locking area 41 and the second locking area 51.

[0044] The wedge push-pull rod 6 comprises a rod body 61 and a push-pull part 62 connected to one end of the rod body 61, the push-pull part 62 comprises a main body part 621, end block parts 622 arranged at both ends of the main body part 621, and a central block part 623 arranged at the central region of the main body part 621, a groove 624 is formed between the end block parts 622 and the central block part 623, the other end of the rod body 61 passes through the shell 1 and is connected with the push-pull rod piston 7, in the embodiment, the side surface of the central block part 623 is triangular, and the side surface of the end block part 622 is rhombic.

[0045] The first and second special-shaped wedge blocks 4 and 5 are both provided with a cavity part 10 for the up-down movement of the wedge push-pull rod 6. The cavity part 10 is provided with a protrusion part 101 matched with the groove 624, and further comprises a moving cavity 102 for the up-down movement of the end block part 622. When the wedge push-pull rod 6 moves downward, the whole push-pull part 62 moves downward obliquely under the matching and guiding of the groove 624 and the protrusion part 101, thereby pulling the first and second special-shaped wedge blocks 4 and 5 to move towards each other. Conversely, when the wedge push-pull rod 6 moves upward, the whole push-pull part 62 moves upward obliquely under the matching and guiding of the groove 624 and the protrusion part 101, thereby pushing the first and second special-shaped wedge blocks 4 and 5 to move away from each other.

[0046] The shell 1 is formed with a sliding groove 11, and the side parts of the first and second special-shaped wedge blocks 4 and 5 are outwardly protruded and formed with sliding block parts 42 and 52 matched with the sliding groove 11, thereby realizing the left-right sliding of the first and second special-shaped wedge blocks 4 and 5 in the shell 1.

[0047] The first and second special-shaped wedge blocks 4 and 5 are both connected with an induction adjusting block 12 and a proximity switch 13, when the air cylinder connected with the push-pull rod piston 7 is opened or closed, the induction adjusting block 12 on the special-shaped wedge block is matched with the position of the proximity switch 13, thereby detecting whether the air cylinder is in the opened state or the closed state.

[0048] The working principle of the present application is as follows: when the workpiece 20 needs to be gripped, air is supplied above the push-pull rod piston 7 and acts on the push-pull rod piston 7, the push-pull rod piston 7 in turn drives the wedge push-pull rod 6 to move downward, at this time, the whole push-pull part 62 moves downward obliquely under the matching and guiding of the groove 624 and the protrusion part 101, thereby pulling the first and second special-shaped wedge blocks 4 and 5 to move towards each other, so that the first and second clamping jaws 2 and 3 are gripped together and hold the workpiece, at the same time, the locking structure 8 locks the first and second special-shaped wedge blocks 4 and 5, thereby further improving the clamping force, according to the test, the clamping force of the present application can reach 1 ton, and the thrust can reach 5 tons.

[0049] Specific locking action is: from the locking piston 82 above to give gas, locking piston 82 push wedge pin to the first and second special wedge block 4 5 movement, and into the first locking area 41 and the second locking area 51, realize the wedge pin will first and second special wedge block 4 5 locking and force effect.

[0050] When the need to release the workpiece 20, first, the gas to the locking piston 82 on the locking piston 82 to the direction away from the first and second special wedge block 4 5 movement, so as to pull the wedge pin out of the first and second locking area 41 51, then the gas to the push-pull rod piston 7 below, push wedge push-pull rod 6 upward movement, the whole push-pull part 62 in the groove 624 and the matching, guiding the convex part 101 under the oblique upward movement, so as to push the first and second special wedge block 4 5 make it back to the movement, so that the first jaw 2 and the second jaw 3 loose, open workpiece 20.

[0051] According to the above disclosure and teaching, those skilled in the art of the present application can also change and modify the above-mentioned embodiments. Therefore, the present application is not limited to the specific embodiments disclosed and described above, and some modifications and changes of the present application should fall within the scope of the claims of the present application. In addition, although some specific terms are used in the specification, these terms are only for convenience of explanation and do not constitute any limitation on the present application.

Claims

1. A pneumatic gripper structure, characterized in that: The device includes a housing, a first gripper, a second gripper, a first shaped wedge, a second shaped wedge, a wedge push-pull rod, a push-pull rod piston, and a locking structure. The first gripper is connected to the first shaped wedge, and the second gripper is connected to the second shaped wedge. Both the first and second shaped wedges are slidably disposed within the housing. One end of the wedge push-pull rod passes through the housing and is connected to the push-pull rod piston. The other end of the wedge push-pull rod is disposed between the first and second shaped wedges. The up-and-down movement of the wedge push-pull rod can close or separate the first and second grippers. When the first and second grippers are engaged, they form a space for accommodating the workpiece. Both the first irregular wedge and the second irregular wedge are connected to the locking structure; The locking structure includes a locking piston, a first wedge pin, and a second wedge pin. One end of the first wedge pin is connected to the locking piston, and the side of the first irregular wedge block is provided with a first locking area that matches the wedge-shaped portion of the first wedge pin. One end of the second wedge pin is connected to the locking piston, and the side of the second irregular wedge block is provided with a second locking area that matches the wedge-shaped portion of the second wedge pin. When locking is required, air is supplied from above the locking piston, and the locking piston pushes the first wedge pin and the second wedge pin toward the first irregular wedge block and the second irregular wedge block respectively, and enters the first locking area and the second locking area to realize the locking function; When unlocking is required, air is supplied to the locking piston, which pulls the first wedge pin and the second wedge pin away from the first locking area and the second locking area respectively, thereby realizing the unlocking function.

2. The pneumatic gripper structure according to claim 1, characterized in that: When the wedge push rod moves downward, the first irregular wedge and the second irregular wedge move towards each other and close the first gripper and the second gripper. When the wedge push rod moves upward, the first irregular wedge and the second irregular wedge move in opposite directions and separate the first gripper and the second gripper.

3. The pneumatic gripper structure according to claim 1, characterized in that: The locking structure also includes a locking cylinder, and the locking piston is disposed within the locking cylinder.

4. The pneumatic gripper structure according to claim 3, characterized in that: A magnetic switch is connected to the locking cylinder.

5. The pneumatic gripper structure according to claim 1, characterized in that: The wedge push-pull rod includes a rod body and a push-pull portion connected to one end of the rod body. The push-pull portion includes a main body, end protrusions disposed at both ends of the main body, and a central protrusion disposed in the central region of the main body. A groove is formed between the end protrusions and the central protrusion.

6. The pneumatic gripper structure according to claim 5, characterized in that: Both the first and second irregularly shaped wedges are provided with cavities that allow the wedge push rod to move up and down.

7. The pneumatic gripper structure according to claim 6, characterized in that: The cavity portion is provided with a protrusion that matches the groove, and the cavity portion includes a movable cavity that allows the end protrusion portion to move up and down.

8. The pneumatic gripper structure according to claim 1, characterized in that: The housing has a groove, and the sides of the first and second irregular wedges protrude outward to form slider portions that match the groove.

9. The pneumatic gripper structure according to claim 1, characterized in that: Both the first irregular wedge and the second irregular wedge are connected to a sensing adjustment block and a proximity switch.

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