CN209986455U

CN209986455U - Claw device

Info

Publication number: CN209986455U
Application number: CN201920634128.1U
Authority: CN
Inventors: 张鹏飞; 张俊; 赖素滢
Original assignee: Auspicious Loose Big Dipper Car Equipment Co Ltd In Guangzhou
Current assignee: Auspicious Loose Big Dipper Car Equipment Co Ltd In Guangzhou
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2020-01-24
Anticipated expiration: 2029-04-30

Abstract

The utility model relates to an automobile manufacturing technical field, and specifically disclose a jack catch device, which comprises a mounting bas, it is provided with jack catch guide rail and drive jack catch guide rail rectilinear movement's driving piece to slide on the mount pad, it sets up first slider and second slider to slide on the jack catch guide rail, be provided with on the first slider and drive actuating cylinder and first jack catch, be provided with the second jack catch on the second slider, the piston rod tip that drives actuating cylinder is connected with second slider or second jack catch, in order to drive first jack catch and second jack catch relative movement in order to realize the chucking work piece, first jack catch has the first joint face of joint work piece, the second jack catch has the second joint face of joint work piece, set up first latch and second latch respectively along vertical direction on first joint face and the second joint face. The utility model discloses a jack catch device, simple structure can press from both sides and get work piece not unidimensional and height, and the commonality is high, and area occupied is little.

Description

Claw device

Technical Field

The utility model relates to a vehicle production technical field especially relates to a gripper device.

Background

Automobile bodies are generally formed by welding a floor assembly, a side panel assembly, a roof assembly and the like. In the process of assembling and welding the automobile body, in order to ensure the product quality, improve the labor productivity and reduce the labor intensity, a plurality of tool fixtures are often used, and are used for clamping and positioning each component of the automobile body so as to complete the assembling and welding work of the automobile body.

With diversified market demands, the whole automobile factory is impacted by increasing automobile types, and one production line often needs to meet the function of mixed production of a plurality of automobile types. At present, in order to overcome the problem of mixed production of a plurality of vehicle types, some manufacturers adopt one vehicle type to arrange one set of tool clamp, so that the cost is increased, and the space of a workshop is occupied.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides an aim at: the clamping claw device is simple in structure, high in universality, low in cost and small in occupied area.

To achieve the purpose, the embodiment of the present invention adopts the following technical solutions:

the first aspect provides a jack catch device, including the mount pad, it is provided with jack catch guide rail and drive to slide on the mount pad jack catch guide rail rectilinear movement's driving piece, it sets up first slider and second slider to slide on the jack catch guide rail, be provided with on the first slider and drive actuating cylinder and first jack catch, be provided with the second jack catch on the second slider, drive actuating cylinder's piston rod tip with the second slider or the second jack catch is connected, in order to drive first jack catch and second jack catch relative movement are in order to realize the chucking work piece, first jack catch has the joint the first joint face of work piece, the second jack catch has the joint the second joint face of work piece, first joint face with set up first latch and second latch respectively along vertical direction on the second joint face.

As a preferable scheme of the jaw device, the first jaw comprises a first connecting arm and a first clamping portion, one end of the first connecting arm is connected with the first slider, and the other end of the first connecting arm is hinged to the first clamping portion through a hinge;

the second jack catch includes second linking arm and second joint portion, the one end of second linking arm with the second slider is connected, the other end of second linking arm pass through the articulated elements with second joint portion is articulated.

As a preferred scheme of jack catch device, first linking arm through first articulated shaft with first joint portion is articulated, first joint portion can be followed the axis of first articulated shaft rotates, the axis of first articulated shaft sets up along vertical direction.

As a preferred scheme of the clamping jaw device, the first clamping portion comprises a first connecting plate and first clamping plates arranged at two ends of the first connecting plate, the first clamping plates are arranged at intervals along the horizontal plane, and one ends of the first clamping plates, far away from the first connecting plate, are provided with the first clamping teeth.

As a preferred scheme of jack catch device, first connecting arm is connected the one end of first joint portion is provided with first articulated seat, set up first through-hole on the first articulated seat, first connecting plate deviates from one side of first joint plate and is located the middle part of first connecting plate sets up the articulated seat of second, set up the second through-hole on the articulated seat of second, first articulated axle passes first through-hole and second through-hole will first articulated seat with the articulated seat of second is connected.

As a preferred scheme of jack catch device, the second linking arm pass through the second articulated shaft with second joint portion is articulated, second joint portion can be followed the axis of second articulated shaft rotates, the axis of second articulated shaft sets up along vertical direction.

As an optimal scheme of the clamping jaw device, the second clamping portion comprises a second connecting plate and second clamping plates arranged at two ends of the second connecting plate, the second clamping plates are arranged at intervals along the horizontal plane, and one ends of the second clamping plates, far away from the second connecting plate, are provided with second clamping teeth.

As a preferred scheme of the clamping jaw device, the second connecting arm is connected one end of the second clamping portion is provided with a third hinge seat, a third through hole is formed in the third hinge seat, the second connecting plate deviates from one side of the second clamping plate and is located the middle of the second connecting plate is provided with a fourth hinge seat, a fourth through hole is formed in the fourth hinge seat, and the second hinge shaft penetrates through the third through hole and the fourth through hole to be connected with the third hinge seat and the fourth hinge seat.

As a preferred scheme of the clamping jaw device, a first clamping groove is formed between every two adjacent first clamping teeth, a second clamping groove is formed between every two adjacent second clamping teeth, and any one of the first clamping grooves and any one of the second clamping grooves form a clamping position for clamping workpieces.

As a preferable scheme of the jaw device, in-place detection assemblies are arranged on the first clamping surface and the second clamping surface, and the in-place detection assemblies, the driving member and the driving cylinder are electrically connected with a controller.

The utility model discloses beneficial effect does: the sliding jaw guide rail is arranged, so that the position of the jaw guide rail can be adjusted to adjust the position of an assembly formed by the first jaw and the second jaw, and the relative position between the first jaw and the second jaw can be adjusted independently, so that the jaws can clamp workpieces with different shapes and sizes at different positions, and the high universality of multiple vehicle types is realized by a simple structure; through setting up the latch of arranging along vertical direction, can utilize the latch to press from both sides and get the work piece of co-usage of co-altitude not, further promote whole device.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Fig. 1 is a schematic perspective view of a jaw device according to an embodiment of the present invention.

Fig. 2 is a schematic view of a state when the first claw catches the first vehicle type.

Fig. 3 is a schematic view of a state when the first claw catches the second vehicle type.

Fig. 4 is a schematic view of a state when the first claw catches the third vehicle type.

Fig. 5 is a schematic front view of a jaw device according to an embodiment of the present invention.

Fig. 6 is a schematic bottom view of a jaw assembly according to an embodiment of the present invention.

In the figure:

1. an in-place detection component; 2. a jaw guide rail; 3. a drive member; 31. a drive motor; 32. a ball screw module; 4. a first slider; 5. a second slider; 6. a driving cylinder; 61. a piston rod; 7. a first jaw; 71. a first latch; 72. a first connecting arm; 721. a first arm; 722. a second arm; 723. a third arm; 73. a first clamping part; 731. a first connecting plate; 732. a first clamping connection plate; 74. a first hinge shaft; 75. a first hinge mount; 76. a second hinge mount; 77. a first card slot; 8. a second jaw; 81. a second latch; 82. a second connecting arm; 821. a fourth arm; 822. a fifth arm; 823. a sixth arm; 83. a second clamping part; 831. a second connecting plate; 832. a second clamping plate; 84. a second hinge shaft; 85. a third hinge mount; 86. a fourth hinge base; 87. a second card slot; 9. a guide rail lock; 10. a first vehicle type; 11. a second vehicle type; 12. and a third vehicle type.

Detailed Description

In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1 to 6, the embodiment of the present invention discloses a clamping jaw device, which comprises a mounting seat (not shown in the figures), the mounting seat is provided with a jaw guide rail 2 and a driving piece 3 for driving the jaw guide rail 2 to move linearly in a sliding way, the jaw guide rail 2 is provided with a first slide block 4 and a second slide block 5 in a sliding way, the first slide block 4 is provided with a driving cylinder 6 and a first jaw 7, a second jaw 8 is arranged on the second sliding block 5, the end part of a piston rod 61 of the driving cylinder 6 is connected with the second sliding block 5 or the second jaw 8, so as to drive the first clamping jaw 7 and the second clamping jaw 8 to move relatively to clamp the workpiece, wherein the first clamping jaw 7 is provided with a first clamping surface for clamping the workpiece, the second clamping jaw 8 is provided with a second clamping surface for clamping the workpiece, and the first clamping surface and the second clamping surface are respectively provided with a first clamping tooth 71 and a second clamping tooth 81 along the vertical direction. By arranging the sliding jaw guide rail 2, the position of the jaw guide rail 2 can be adjusted to adjust the position of an assembly formed by the first jaw 7 and the second jaw 8, and the relative position between the first jaw 7 and the second jaw 8 can be independently adjusted, so that the two jaws can clamp workpieces with different shapes and sizes at different positions, and the height sharing of multiple vehicle types is realized by a simple structure; through setting up the latch of arranging along vertical direction, can utilize the latch clamp to get the work piece of co-altitude not, further promote the commonality of whole device, in addition, the latch structure still breaks away from the jack catch in order effectively to prevent the work piece.

In this embodiment, the driving member 3 includes driving motor 31 and ball screw module 32, driving motor 31 and ball screw module 32 all set up on the mount pad, and ball screw module 32 includes the lead screw, the cover establishes on the lead screw with lead screw complex screw-nut, and screw-nut fixes and deviates from at jack catch guide rail 2 one side of first slider 4 and second slider 5, go back the interval setting on the mount pad and be used for supporting the supporting seat of lead screw, set up the through-hole on the supporting seat, be provided with in the through-hole with lead screw complex bearing, driving motor 31's output axle head is connected with the lead screw for the drive screw rotates, screw-nut then drives jack catch guide rail 2 and removes. The ball screw module 32 drives the jaw guide rail 2 to move more stably and reliably.

Preferably, the length of the jaw guide rail 2 extends along the length direction of the screw rod, and at least two screw rod nuts are arranged on the jaw guide rail 2 at intervals. Two screw-nuts that the interval set up can provide the support for the removal of bar-shaped structure's jack catch guide rail 2, prevent that jack catch guide rail 2 from taking place to warp.

As shown in fig. 5, this figure shows a usage state diagram of the whole claw device, the mounting base is suspended at a designated position (the suspended position is not shown in the figure), the claw guide rail 2 moves left and right along the horizontal direction, and the first slider 4 carries the first claw 7 and the second slider 5 carries the second claw 8 and moves left and right along the horizontal direction.

In one embodiment, the first claw 7 includes a first connecting arm 72 and a first clamping portion 73, one end of the first connecting arm 72 is connected to the first slider 4, and the other end of the first connecting arm 72 is hinged to the first clamping portion 73 through a hinge; the second jack catch 8 includes second linking arm 82 and second joint portion 83, the one end of second linking arm 82 with the second slider 5 is connected, the other end of second linking arm 82 pass through the articulated elements with second joint portion 83 is articulated. Through all setting up to articulated structure with the first joint portion 73 that is equipped with first latch 71 and the second joint portion 83 that is equipped with second latch 81, can make two joint portions can guarantee the tight reliability of two jack catchs clamps according to the appearance automatically regulated clamp of work piece when the butt work piece, also can alleviate two joint portions and work piece surface rigidity collision to a certain extent simultaneously, reduce the damage of work piece.

In one embodiment, the first connecting arm 72 is hinged to the first engaging portion 73 through a first hinge shaft 74, the first engaging portion 73 can rotate along the axis of the first hinge shaft 74, and the axis of the first hinge shaft 74 is disposed along the vertical direction. First articulated shaft 74 sets up along vertical direction for first joint portion 73 only can follow the horizontal direction swing, even the work piece has angle difference on the horizontal plane, and first joint portion 73 also can rotate around first articulated shaft 74 and compensate this difference, makes first joint portion 73 can the chucking work piece. Specifically, as shown in fig. 5, the first catching portion 73 swings in the front-rear direction on a horizontal plane.

In this embodiment, the first engaging portion 73 includes a first connecting plate 731 and first engaging plates 732 disposed at two ends of the first connecting plate 731, the two first engaging plates 732 are disposed at an interval along a horizontal plane, and one end of the first engaging plate 732 away from the first connecting plate 731 is disposed with the first engaging tooth 71. The two first clamping plates 732 are arranged, so that the area of the first clamping jaw 7 for clamping the workpiece can be increased, and the stability of the first clamping jaw 7 for clamping the workpiece is improved.

Further, one end of the first connecting arm 72, which is connected to the first clamping portion 73, is provided with a first hinge seat 75, a first through hole is formed in the first hinge seat 75, one side of the first connecting plate 731, which is away from the first clamping plate 732, is located in the middle of the first connecting plate 731, and a second hinge seat 76 is provided, a second through hole is provided in the second hinge seat 76, and the first hinge shaft 74 penetrates through the first through hole and the second through hole to connect the first hinge seat 75 and the second hinge seat 76. Preferably, first articulated shaft 74 includes the axle body, the one end of axle body sets up spacing shaft shoulder, and the other end is protruding to be equipped with the screw rod structure, and the screw rod is structural to be screwed with the nut, and first articulated shaft 74 is when being connected with first articulated seat 75 and the articulated seat 76 of second, and spacing shaft shoulder and nut are located the outside of first articulated seat 75 and the articulated seat 76 of second respectively, can prevent effectively that first articulated shaft 74 from breaking away from first articulated seat 75 and the articulated seat 76 of second.

In one embodiment, the second connecting arm 82 is hinged to the second clamping portion 83 through a second hinge shaft 84, the second clamping portion 83 can rotate along the axis of the second hinge shaft 84, and the axis of the second hinge shaft 84 is arranged along the vertical direction. Second articulated shaft 84 sets up along vertical direction for second joint portion 83 only can follow the horizontal direction swing, even the work piece has angle difference on the horizontal plane, and second joint portion 83 also can rotate around second articulated shaft 84 and compensate this difference, makes second joint portion 83 can the chucking work piece. Specifically, as shown in fig. 5, the second catching portion 83 swings in the front-rear direction on a horizontal plane.

In this embodiment, the second latch portion 83 includes a second connecting plate 831 and second latch plates 832 disposed at two ends of the second connecting plate 831, the two second latch plates 832 are disposed at intervals along a horizontal plane, and one end of the second latch plate 832 far from the second connecting plate 831 is disposed with the second latch 81. Two second clamping plates 832 are arranged, so that the area of the second clamping jaw 8 for clamping the workpiece can be increased, and the stability of the second clamping jaw 8 for clamping the workpiece is improved.

Specifically, the second connecting arm 82 is connected the one end of second joint portion 83 is provided with third articulated seat 85, set up the third through-hole on the third articulated seat 85, second connecting plate 831 deviates from one side of second joint plate 832 and is located the middle part of second connecting plate 831 sets up the fourth articulated seat 86, set up the fourth through-hole on the fourth articulated seat 86, second articulated shaft 84 passes third through-hole and fourth through-hole will third articulated seat 85 with fourth articulated seat 86 connects. Preferably, the second hinge shaft 84 includes a shaft body, one end of the shaft body is provided with a limit shaft shoulder, the other end is convexly provided with a screw rod structure, the screw rod structure is screwed with a nut, when the second hinge shaft 84 is connected with the third hinge seat 85 and the fourth hinge seat 86, the limit shaft shoulder and the nut are respectively located at the outer sides of the third hinge seat 85 and the fourth hinge seat 86, and the second hinge shaft 84 can be effectively prevented from being separated from the third hinge seat 85 and the fourth hinge seat 86.

In an embodiment, a first clamping groove 77 is formed between two adjacent first clamping teeth 71, a second clamping groove 87 is formed between two adjacent second clamping teeth 81, and any one of the first clamping grooves 77 and any one of the second clamping grooves 87 form a clamping position for clamping a workpiece.

As shown in fig. 2 to 4, the workpiece grabbed by the first claw 7 and the second claw 8 of the present invention is a vehicle type in the production process, and the illustration shows three different vehicle types, and the first claw 7 and the second claw 8 corresponding to the three different vehicle types present different grabbing states, for example, as shown in fig. 2, one end of the first vehicle type 10 is engaged in the sixth first engaging groove 77 of the first claw 7 from top to bottom, and the other end is engaged in the fifth second engaging groove 87 of the second claw 8 from top to bottom; as shown in fig. 3, one end of the second vehicle type 11 is clamped in the ninth first clamping groove 77 of the first clamping jaw 7 from top to bottom, and the other end is clamped in the tenth second clamping groove 87 of the second clamping jaw 8 from top to bottom; as shown in fig. 4, one end of the third type 12 is connected to the eleventh first engaging groove 77 of the first jaw 7 from top to bottom, and the other end is connected to the ninth second engaging groove 87 of the second jaw 8 from top to bottom. Therefore, the first clamping teeth 71 and the second clamping teeth 81 which are arranged at intervals along the vertical direction of the first clamping jaw 7 and the second clamping jaw 8 can be combined differently to meet the grabbing requirements of different vehicle types.

In one embodiment, the in-place detection assembly 1 is disposed on each of the first engaging surface and the second engaging surface, that is, the in-place detection assembly 1 is disposed on each of the first engaging portion 73 and the second engaging portion 83, and the in-place detection assembly 1, the driving member 3 and the driving cylinder 6 are electrically connected to a controller. Through setting up the detection subassembly 1 that targets in place, can detect the state of two jack catchs chucking work pieces in real time, if the detection subassembly 1 that targets in place detects two jack catchs and has pressed from both sides tight work piece, the controller controls immediately and drives actuating cylinder 6 stop motion, prevents effectively that the jack catch from pressing from both sides bad work piece.

In this embodiment, the jaw guide rail 2 is provided with a guide rail lock 9, the guide rail lock 9 is electrically connected with the controller, and when the in-place detection assembly 1 detects that the first jaw 7 and the second jaw 8 clamp the workpiece, the controller simultaneously controls the guide rail lock 9 to be started to lock the first slider 4 and the second slider 5 on the jaw guide rail 2. Through setting up guide rail lock 9, can be when first jack catch 7 and second jack catch 8 move the chucking work piece, can lock first slider 4 and second slider 5, prevent that first jack catch 7 and second jack catch 8 from taking place to remove.

Specifically, as shown in fig. 5, the first connecting arm 72 of the first jaw 7 includes a first arm 721, a second arm 722, and a third arm 723, which are connected in sequence, the first arm 721 is connected to the first slider 4, the second arm 722 is disposed at an angle to the first arm 721, the third arm 723 is disposed at an angle to the second arm 722, the second connecting arm 82 of the second jaw 8 includes a fourth arm 821, a fifth arm 822, and a sixth arm 823, which are connected in sequence, the fourth arm 821 is connected to the second slider 5, the fifth arm 822 is disposed at an angle to the fourth arm 821, the sixth arm 823 is disposed at an angle to the fifth arm 822, one end of the third arm 723, which is far from the second arm 722, is connected to the first clamping portion 73, one end of the sixth arm 823, which is far from the fifth arm 822, is connected to the second clamping portion 83, the first arm 721 is parallel to the fourth arm 821, the second arm is inclined toward a side far from the fifth arm 722, the fifth arm 822 is inclined toward a side far from the second arm 822, the third arm 723 is parallel to the sixth arm 823, and the structure enables a larger accommodating space to be formed between the first jaw 7 and the second jaw 8, so that the width of the jaws capable of clamping a workpiece is increased.

In the description herein, it is to be understood that the terms "upper", "lower", "right", and the like are used in an orientation or positional relationship based on that shown in the drawings for convenience of description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used merely for descriptive purposes and are not intended to have any special meaning.

In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.

The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the present invention.

Claims

1. The utility model provides a gripper device, a serial communication port, including the mount pad, it is provided with jack catch guide rail and drive to slide on the mount pad jack catch guide rail rectilinear movement's driving piece, it sets up first slider and second slider to slide on the jack catch guide rail, be provided with on the first slider and drive actuating cylinder and first jack catch, be provided with the second jack catch on the second slider, drive actuating cylinder's piston rod tip with the second slider or the second jack catch is connected, in order to drive first jack catch and second jack catch relative movement are in order to realize the chucking work piece, first jack catch has the joint the first joint face of work piece, the second jack catch has the joint the second joint face of work piece, first joint face with set up first latch and second latch respectively along vertical direction on the second joint face.

2. The jaw device as claimed in claim 1, wherein the first jaw includes a first connecting arm and a first clamping portion, one end of the first connecting arm is connected with the first slider, and the other end of the first connecting arm is hinged with the first clamping portion through a hinge;

3. The jaw apparatus of claim 2, wherein the first connecting arm is hinged to the first joint portion through a first hinge shaft, the first joint portion is rotatable along an axis of the first hinge shaft, and the axis of the first hinge shaft is disposed in a vertical direction.

4. The clamping jaw device as claimed in claim 3, wherein the first clamping portion comprises a first connecting plate and first clamping plates arranged at two ends of the first connecting plate, the two first clamping plates are arranged at intervals along a horizontal plane, and one ends, far away from the first connecting plate, of the first clamping plates are provided with the first clamping teeth.

5. The clamping jaw device as claimed in claim 4, wherein a first hinge seat is arranged at one end of the first connecting arm, which is connected with the first clamping portion, a first through hole is formed in the first hinge seat, a second hinge seat is arranged at one side, which is far away from the first clamping plate, of the first connecting plate and is positioned in the middle of the first connecting plate, a second through hole is formed in the second hinge seat, and the first hinge shaft penetrates through the first through hole and the second through hole to connect the first hinge seat with the second hinge seat.

6. The jaw apparatus of claim 2, wherein the second connecting arm is hinged to the second clamping portion through a second hinge shaft, the second clamping portion is rotatable along an axis of the second hinge shaft, and the axis of the second hinge shaft is vertically disposed.

7. The clamping jaw device as claimed in claim 6, wherein the second clamping portion comprises a second connecting plate and second clamping plates arranged at two ends of the second connecting plate, the two second clamping plates are arranged at intervals along a horizontal plane, and the second clamping teeth are arranged at one ends, far away from the second connecting plate, of the second clamping plates.

8. The clamping jaw device as claimed in claim 7, wherein a third hinge seat is arranged at one end of the second connecting arm connected with the second clamping portion, a third through hole is formed in the third hinge seat, a fourth hinge seat is arranged on one side, away from the second clamping plate, of the second connecting plate and located in the middle of the second connecting plate, a fourth through hole is formed in the fourth hinge seat, and the second hinge shaft penetrates through the third through hole and the fourth through hole to connect the third hinge seat with the fourth hinge seat.

9. The jaw device of claim 1, wherein a first clamping groove is formed between two adjacent first clamping teeth, a second clamping groove is formed between two adjacent second clamping teeth, and any one of the first clamping grooves and any one of the second clamping grooves form a clamping position for clamping a workpiece.

10. The jaw assembly of any one of claims 1 to 9, wherein the first and second engagement surfaces each have an in-position detection assembly disposed thereon, the in-position detection assembly, the drive member and the drive cylinder each being electrically connected to a controller.