Clamping mechanism

Abstract

The clamping mechanism comprises a clamp main body, an elastic piece, a cam and a driving device, the clamp main body comprises a left clamping arm and a right clamping arm which can be opened and closed, the elastic piece is used for driving the clamping sections of the left clamping arm and the right clamping arm to be relatively closed, and the rotating axis of the cam is parallel to the hinged axis of the left clamping arm; the cam acts between the inner walls of the two clamping sections of the left clamping arm and the right clamping arm, the driving device is used for driving the cam to rotate till the two clamping sections are in a closed state or an open state, the top edge of the cam leaves the inner walls of the clamping sections of the left clamping arm and the right clamping arm, and the two clamping sections of the left clamping arm and the right clamping arm recover to be closed. The top edge of the cam extrudes the inner walls of the clamping sections of the left clamping arm and the right clamping arm, so that the two clamping sections of the left clamping arm and the right clamping arm are oppositely opened, the cam and the driving device can move along the hinge axis of the clamp body to be separated from the clamp body, the clamp body can move independently, the operation burden of workers is reduced, and the production efficiency of components is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to a clamping mechanism. Background Art

[0002] The production process of components (such as diodes) is inseparable from the clamping mechanism. Since most components are small in size, in order to ensure production efficiency, the clamping mechanism often needs to clamp multiple components for processing at the same time. Common clamping mechanisms mainly include hard clamping mechanisms and elastic clamping mechanisms. In order to avoid damaging components, elastic clamping mechanisms with milder forces are usually used.

[0003] However, most existing elastic clamping mechanisms (such as spring clamps) usually require manual control of the opening and closing of the clamps, which not only increases the operating burden of workers, but also easily affects production efficiency. Utility Model Content

[0004] In view of this, the utility model provides a clamping mechanism for solving the problem that the elastic clamping mechanism in the prior art usually requires manual control of the opening and closing of the clamp, which not only increases the operating burden of the workers but also easily affects the production efficiency.

[0005] In order to achieve one or part or all of the above-mentioned purposes or other purposes, the utility model proposes a clamping mechanism, including a clamp body, an elastic member, a cam and a driving device, the clamp body including a left clamp arm and a right clamp arm that can be opened and closed, the elastic member is used to drive the clamping sections of the left clamp arm and the right clamp arm to be relatively closed, the rotation axis of the cam is parallel to the hinge axis of the left clamp arm, the cam acts between the inner walls of the two clamping sections of the left clamp arm and the right clamp arm, the driving device is used to drive the cam to rotate until the two clamping sections are in a closed state or an open state, the top edge of the cam leaves the inner walls of the clamping sections of the left clamp arm and the right clamp arm, the two clamping sections of the left clamp arm and the right clamp arm resume closure, the top edge of the cam squeezes the inner walls of the clamping sections of the left clamp arm and the right clamp arm, so that the two clamping sections of the left clamp arm and the right clamp arm are relatively opened.

[0006] Preferably, the opposite inner sides of the two clamping sections of the left clamping arm and the right clamping arm are respectively provided with notches, and the avoidance hole enclosed by the two notches is used to accommodate the cam. The bottom walls of the two notches constitute the inner wall for the top edge of the cam to be squeezed. The end of the cam facing away from the clamp body is coaxially fixed with a rotating shaft, and the driving device is used to drive the rotating shaft to drive the cam to rotate.

[0007] Preferably, the clamping mechanism further comprises an upper telescopic member and a moving member, the moving member is fixedly arranged on the telescopic end of the upper telescopic member, the rotating shaft is rotatably connected to the moving member in the same direction as the upper telescopic member, and the driving device is arranged on the moving member and is drivingly connected to the rotating shaft.

[0008] Preferably, the movable part includes a front plate and a rear plate, the front plate is fixedly arranged on the telescopic end of the upper telescopic part, the rear plate is located behind the upper telescopic part and is fixedly connected to the front plate, the rotating shaft is rotatably mounted on the front plate, the rear end of the rotating shaft is rotatably connected to the rear plate, and the driving device is arranged on the rear plate and is drivingly connected to the rotating shaft.

[0009] Preferably, the clamping mechanism further comprises a guide member, which is arranged on one side of the upper telescopic member and is used to limit the rotation of the telescopic end of the upper telescopic member.

[0010] Preferably, the guide member is a sliding sleeve, which is arranged in the same direction on one side of the upper telescopic member, and a sliding rod is connected between the front plate and the rear plate, and the sliding rod is slidably sleeved on the inner side of the sliding sleeve.

[0011] Preferably, two of the sliding sleeves and two of the sliding rods are provided, and the sliding sleeves are respectively arranged on both sides of the upper telescopic member, and the sliding rods and the sliding sleeves are arranged in a one-to-one correspondence.

[0012] Preferably, the movable part also includes a bottom plate, which is vertically arranged below the rear plate, and the top end of the bottom plate is fixedly connected to the rear plate. The driving device includes a lower telescopic part and a connecting rod, and the lower telescopic part is arranged upward on one side of the bottom plate, and the bottom end of the lower telescopic part is hinged to the side wall of the bottom plate, one end of the connecting rod is hinged to the telescopic end of the lower telescopic part, and the other end of the connecting rod is fixedly connected to the side wall of the rotating shaft.

[0013] Preferably, the upper telescopic member and the lower telescopic member are both cylinders.

[0014] Preferably, the hinge end axes of the left clamp arm and the right clamp arm are spaced apart from each other, a left gear is coaxially provided on the inner side of the left clamp arm and the hinge axis, and a right gear is coaxially provided on the inner side of the right clamp arm and the hinge axis, and the left gear is meshed with the right gear.

[0015] Implementing the embodiments of the present utility model will have the following beneficial effects:

[0016] After adopting the above clamping mechanism, under normal conditions, the elastic member will drive the clamping section of the left clamping arm and the clamping section of the right clamping arm to swing and close. When it is necessary to clamp components, the driving device can drive the cam to rotate so that the long axis of the cam is perpendicular to the long axis of the avoidance hole, and the top edges on both sides of the cam are used to squeeze the inner side of the clamping section of the left clamping arm and the inner side of the clamping section of the right clamping arm respectively, thereby driving the clamping section of the left clamping arm and the clamping section of the right clamping arm to swing and open around the corresponding hinged end. At this time, the elastic member is squeezed by the left clamping arm and the right clamping arm to become The cam is shaped to store energy, and the operator can insert the pins of the components between the clamping sections of the left clamping arm and the right clamping arm. Then the driving device will drive the cam to reverse and reset, and release the squeezing of the top edge of the cam on the inner walls of the left clamping arm and the right clamping arm. At this time, the elastic part releases energy and resets, and drives the left clamping arm and the right clamping arm to swing and reset, so that the clamping sections of the left clamping arm and the right clamping arm gather together to clamp the pins of the components, thereby avoiding manual control of the opening and closing of the clamps, reducing the operating burden of workers, and ensuring the production efficiency of components. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] in:

[0019] Figure 1 It is a three-dimensional diagram of the utility model;

[0020] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0021] Figure 3 It is an exploded view of the utility model.

[0022] In the figure: 1. fixed seat; 2. left clamping arm; 21. notch; 22. avoidance hole; 23. rubber strip; 24. left gear; 3. right clamping arm; 31. right gear; 4. elastic member; 5. upper telescopic member; 6. moving member; 61. front plate; 62. rear plate; 63. bottom plate; 64. sliding rod; 7. rotating shaft; 71. cam; 72. arc surface structure; 73. chamfer; 8. driving device; 81. lower telescopic member; 82. connecting rod; 9. guide member; a. components. DETAILED DESCRIPTION

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of the present invention; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of the present invention or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0024] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0025] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0026] like Figure 1-3 As shown, a clamping mechanism includes a clamp body, an elastic member 4, a cam 71 and a driving device 8, the clamp body includes a left clamp arm 2 and a right clamp arm 3 that can be opened and closed, the elastic member 4 is used to drive the clamping sections of the left clamp arm 2 and the right clamp arm 3 to be relatively closed, the rotation axis of the cam 71 is parallel to the hinge axis of the left clamp arm 2, the cam 71 acts between the inner walls of the two clamping sections of the left clamp arm 2 and the right clamp arm 3, the driving device 8 is used to drive the cam 71 to rotate until the two clamping sections are in a closed state or an open state, the top edge of the cam 71 leaves the inner walls of the clamping sections of the left clamp arm 2 and the right clamp arm 3, the two clamping sections of the left clamp arm 2 and the right clamp arm 3 are closed again, the top edge of the cam 71 squeezes the inner walls of the clamping sections of the left clamp arm 2 and the right clamp arm 3, so that the two clamping sections of the left clamp arm 2 and the right clamp arm 3 are relatively opened.

[0027] Specifically, the top edge of the cam 71 refers to the side that intersects with the long axis of the cam 71; the inner side of the left clamping arm 2 refers to the side where the left clamping arm 2 is adjacent to the right clamping arm 3, and the same applies to the inner side of the right clamping arm 3; the left clamping arm 2 is divided into a front section and a rear section with the hinge as the boundary, and the clamping section of the left clamping arm 2 refers to the front section used to clamp component a, and the clamping section of the right clamping arm 3 is the same; the elastic member 4 is a spring, and the spring is arranged between the rear section of the left clamping arm 2 and the rear section of the right clamping arm 3, one end of the spring is fixedly connected to the inner wall of the left clamping arm 2, and the other end of the spring is fixedly connected to the inner wall of the right clamping arm 3. Of course, according to actual production or use needs, the spring can also be arranged between the clamping section of the left clamping arm 2 and the clamping section of the right clamping arm 3.

[0028] In one embodiment, under normal conditions, the cam 71 is inserted between the clamping sections of the clamping arm 2 and the right clamping arm 3. The driving device 8 can drive the cam 71 to rotate 90 degrees, so that the top edge of the cam 71 squeezes the inner walls of the two sides of the avoidance hole 22, thereby driving the clamping sections of the left clamping arm 2 and the right clamping arm 3 to swing open around the corresponding hinged ends. After that, it is only necessary to drive the cam 71 to rotate and reset to release the squeezing of the clamping sections of the left clamping arm 2 and the right clamping arm 3, so that the two can be closed again under the drive of the elastic member 4, thereby achieving the purpose of controlling the opening and closing of the clamping sections of the left clamping arm 2 and the right clamping arm 3.

[0029] Furthermore, notches 21 are respectively provided on the opposite inner sides of the two clamping sections of the left clamping arm 2 and the right clamping arm 3. The avoidance hole 22 enclosed by the two notches 21 is used to accommodate the cam 71. The bottom walls of the two notches 21 constitute the inner wall for the top edge of the cam 71 to be squeezed. The end of the cam 71 facing away from the clamp body is coaxially fixed with a rotating shaft 7. The driving device 8 is used to drive the rotating shaft 7 to drive the cam 71 to rotate.

[0030] Furthermore, the clamping mechanism also includes an upper telescopic member 5 and a movable member 6, the movable member 6 is fixedly arranged on the telescopic end of the upper telescopic member 5, the rotating shaft 7 is connected to the movable member 6 in the same direction as the upper telescopic member 5, and the driving device 8 is arranged on the movable member 6 and is drivingly connected to the rotating shaft 7.

[0031] Specifically, the clamp body further includes a fixing base 1 , a left clamp arm 2 is hinged on the left side of the fixing base 1 , and a right clamp arm 2 is hinged on the right side of the fixing base 1 .

[0032] In this embodiment, when in use, the fixing seat 1 and the upper telescopic member 5 need to be fixedly installed on the platform, and the cam 71 is directed toward the avoidance hole 22. Under normal circumstances, the elastic member 4 will drive the clamping section of the left clamping arm 2 and the clamping section of the right clamping arm 3 to swing and close. When it is necessary to clamp the component a, the upper telescopic member 5 will drive the moving member 6 to move toward the avoidance hole 22, thereby driving the cam 71 to extend into the avoidance hole 22. Subsequently, the driving device 8 drives the rotating shaft 7 to rotate, driving the cam 71 to rotate, so that the long axis of the cam 71 is perpendicular to the long axis of the avoidance hole 22, and the top edges on both sides of the cam 71 are used to squeeze the inner sides of the clamping sections of the left clamping arm 2 and the inner sides of the clamping sections of the right clamping arm 3, respectively, thereby driving the clamping section of the left clamping arm 2 The clamping section of the right clamping arm 3 swings open around the corresponding hinged end. At this time, the elastic member 4 is squeezed by the left clamping arm 2 and the right clamping arm 3 to deform and store energy. The operator can insert the pin of component a between the clamping section of the left clamping arm 2 and the clamping section of the right clamping arm 3. Then the driving device 8 drives the rotating shaft 7 to reverse and reset, and releases the squeezing of the top edge of the cam 71 on the inner wall of the left clamping arm 2 and the inner wall of the right clamping arm 3. At this time, the elastic member 4 releases energy and resets, and drives the left clamping arm 2 and the right clamping arm 3 to swing and reset, so that the clamping section of the left clamping arm 2 and the clamping section of the right clamping arm 3 gather together to clamp the pin of component a, thereby avoiding manual control of the opening and closing of the clamp, reducing the operating burden of workers, and ensuring the production efficiency of component a.

[0033] In one embodiment, the driving device 8 can be a servo motor, and the output shaft of the servo motor is coaxially connected to the rotating shaft 7. When the rotating shaft 7 of the servo motor rotates, it can drive the rotating shaft 7 to rotate synchronously (not shown in the drawings).

[0034] Furthermore, the movable member 6 includes a front plate 61 and a rear plate 62, the front plate 61 is fixedly arranged on the telescopic end of the upper telescopic member 5, the rear plate 62 is located behind the upper telescopic member 5 and is fixedly connected to the front plate 61, the rotating shaft 7 is rotatably mounted on the front plate 61, the rear end of the rotating shaft 7 is rotatably connected to the rear plate 62, the driving device 8 is arranged on the rear plate 62 and is drivingly connected to the rotating shaft 7, and when the telescopic end of the upper telescopic member 5 is extended, the front plate 61, the rear plate 62, the rotating shaft 7 and the driving device 8 can be synchronously driven to move.

[0035] Specifically, the rear of the upper telescopic member 5 refers to the direction to which the end of the upper telescopic member 5 away from its telescopic end is directed; during installation, the upper telescopic member 5 can be set at the edge of the platform, and the end of the upper telescopic member 5 away from its telescopic end is directed toward the outside of the platform to prevent the drive device 8 from colliding with other tooling on the platform when the rear plate 62 moves with the front plate 61, thereby avoiding mutual interference.

[0036] Furthermore, the clamping mechanism further includes a guide member 9 , which is disposed on one side of the upper telescopic member 5 , and is used to limit the rotation of the telescopic end of the upper telescopic member 5 .

[0037] In one embodiment, the guide member 9 is a guide rod, which is fixedly arranged on one side of the upper telescopic member 5. The guide rod is in the same direction as the upper telescopic member 5. One end of the guide rod passes through the front plate 61 and is slidably connected to the front plate 61, so as to provide additional support for the front plate 61 through the guide rod, and at the same time limit the front plate 61 to drive the telescopic end of the upper telescopic member 5 to rotate, thereby improving the displacement accuracy of the cam 71 and ensuring that the cam 71 can accurately extend into the avoidance hole 22 (not shown in the drawings).

[0038] Furthermore, the guide member 9 is a sliding sleeve, which is arranged in the same direction on one side of the upper telescopic member 5. A sliding rod 64 is connected between the front plate 61 and the rear plate 62, and the sliding rod 64 can be slidably sleeved on the inner side of the sliding sleeve. When the telescopic end of the upper telescopic member 5 drives the front plate 61 to move, the sliding rod 64 will slide along the sliding sleeve and drive the rear plate 62 to move, thereby achieving the effect of driving the front plate 61, the sliding rod 64, the rear plate 62, the rotating shaft 7 and the driving device 8 to move synchronously. At the same time, the sliding rod 64 will provide additional supporting force for the front plate 61 and the rear plate 62, and cooperate with the telescopic end of the upper telescopic member 5 to limit the swing of the front plate 61, thereby improving the movement accuracy of the front plate 61, the rear plate 62 and the rotating shaft 7, so that the cam 71 is aligned with the avoidance hole 22.

[0039] Furthermore, two sliding sleeves and two sliding rods 64 are provided, and the sliding sleeves are respectively arranged on both sides of the upper telescopic member 5, and the sliding rods 64 are arranged one by one with the sliding sleeves, so as to improve the connection strength between the front plate 61 and the rear plate 62 through the two sliding rods 64, improve the structural stability of the rear plate 62, and make the movement of the rotating shaft 7 more stable.

[0040] Furthermore, the movable member 6 also includes a bottom plate 63, which is vertically arranged below the rear plate 62, and the top of the bottom plate 63 is fixedly connected to the rear plate 62. The driving device 8 includes a lower telescopic member 81 and a connecting rod 82. The lower telescopic member 81 is arranged upward on one side of the bottom plate 63, and the bottom end of the lower telescopic member 81 is hinged to the side wall of the bottom plate 63. One end of the connecting rod 82 is hinged to the telescopic end of the lower telescopic member 81, and the other end of the connecting rod 82 is fixedly connected to the side wall of the rotating shaft 7. When the cam 71 is facing the avoidance hole 22, the telescopic end of the lower telescopic member 81 is in a retracted state; when the cam 71 extends into the avoidance hole 22, the telescopic end of the lower telescopic member 81 can be extended, and the rotating shaft 7 is driven to rotate through the connecting rod 82. The cam 71 is used to squeeze the inner wall of the avoidance hole 22, so that the clamping section of the left clamping arm 2 is separated from the clamping section of the right clamping arm 3. At the same time, the lower telescopic member 81 itself will swing adaptively around the hinged end at its bottom. When the pin of component a is inserted between the clamping section of the left clamping arm 2 and the clamping section of the right clamping arm 3, the telescopic end of the lower telescopic member 81 will retract, and the rotating shaft 7 will be driven to rotate through the connecting rod 82 to release the squeezing of the inner wall of the avoidance hole 22 by the cam 71. At this time, the elastic member 4 releases energy to reset and drives the clamping section of the left clamping arm 2 and the clamping section of the right clamping arm 3 to swing to clamp the pin of component a. Finally, the upper telescopic member 5 retracts to drive the lever to withdraw from the avoidance hole 22. At this point, the clamping operation is completed.

[0041] Furthermore, the upper telescopic member 5 and the lower telescopic member 81 are both cylinders.

[0042] In one embodiment, the upper telescopic member 5 and the lower telescopic member 81 may also be electric cylinders or drive brakes that can be moved.

[0043] Furthermore, the axes of the hinged ends of the left clamp arm 2 and the right clamp arm 3 are spaced from each other, a left gear 24 is provided on the inner side of the left clamp arm 2 coaxially with the hinge axis, and a right gear 31 is provided on the inner side of the right clamp arm 3 coaxially with the hinge axis. The left gear 24 is meshed with the right gear 31. The left clamp arm 2 and the right clamp arm 3 are linked through the left gear 24 and the right gear 31 so that the left clamp arm 2 and the right clamp arm 3 can be flipped in opposite directions synchronously, ensuring the swing consistency of the two and improving the accuracy of the clamping action.

[0044] In this embodiment, both side walls where the cam 71 and its long axis intersect are convex arc structures 72. When the cam 71 rotates so that its long axis is perpendicular to the long axis of the avoidance hole 22, the arc structures 72 on both sides of the cam 71 can slide relative to the corresponding inner walls of the avoidance hole 22, so that the movement process of the cam 71 squeezing the inner walls of the left clamping arm 2 and the inner walls of the right clamping arm 3 is smoother, and a chamfer 73 is provided on one side of the long side of the end of the cam 71 away from the rotating shaft 7. In actual application, since the cross-section of the cam 71 is similar to the cross-section of the avoidance hole 22, when the cam 71 is extended into the avoidance hole 22, the long side edges of the end of the cam 71 are easy to collide with the open end of the avoidance hole 22, interfering with the extension of the cam 71. Providing chamfered surfaces 73 on both sides of the end of the cam 71 can reduce interference and facilitate the cam 71 to extend into the avoidance hole 22.

[0045] In this embodiment, rubber strips 23 are embedded on the inner sides of the clamping sections of the left clamping arm 2 and the right clamping arm 3. The rubber strips 23 are arranged along the hinge axis direction of the left clamping arm 2. The clamping sections of the left clamping arm 2 and the right clamping arm 3 can be abutted against the pins of component a through the corresponding rubber strips 23, so that the elastic clamping of the pins can be achieved through the deformation of the rubber strips 23, thereby avoiding damage to the pins of component a due to hard clamping.

[0046] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. A clamping mechanism, characterized in that: include: A clip body, an elastic member (4), a cam (71) and a driving device (8); The clamp body comprises a left clamp arm (2) and a right clamp arm (3) which can be opened and closed; The elastic member (4) is used to drive the clamping sections of the left clamping arm (2) and the right clamping arm (3) to be relatively closed; The rotation axis of the cam (71) is parallel to the hinge axis of the left clamping arm (2), and the cam (71) acts between the inner walls of the two clamping sections of the left clamping arm (2) and the right clamping arm (3); The driving device (8) is used to drive the cam (71) to rotate until the two clamping sections are in a closed state or an open state; The top edge of the cam (71) leaves the inner wall of the clamping section of the left clamping arm (2) and the right clamping arm (3), and the two clamping sections of the left clamping arm (2) and the right clamping arm (3) resume closing; The top edge of the cam (71) presses the inner walls of the clamping sections of the left clamping arm (2) and the right clamping arm (3), so that the two clamping sections of the left clamping arm (2) and the right clamping arm (3) are relatively opened.

2. A clamping mechanism according to claim 1, characterized in that: The opposite inner sides of the two clamping sections of the left clamping arm (2) and the right clamping arm (3) are respectively provided with notches (21), and the avoidance hole (22) enclosed by the two notches (21) is used to accommodate the cam (71); The bottom walls of the two notches (21) form inner walls for the top edge of the cam (71) to press against; The end of the cam (71) facing away from the clamp body is coaxially fixed with a rotating shaft (7), and the driving device (8) is used to drive the rotating shaft (7) to drive the cam (71) to rotate.

3. A clamping mechanism according to claim 2, characterized in that: The clamping mechanism further comprises an upper telescopic member (5) and a moving member (6), wherein the moving member (6) is fixedly arranged on the telescopic end of the upper telescopic member (5), the rotating shaft (7) is connected to the moving member (6) so as to rotate in the same direction as the upper telescopic member (5), and the driving device (8) is arranged on the moving member (6) and is drivingly connected to the rotating shaft (7).

4. A clamping mechanism according to claim 3, characterized in that: The moving member (6) comprises a front plate (61) and a rear plate (62); The front plate (61) is fixedly arranged on the telescopic end of the upper telescopic member (5); the rear plate (62) is located behind the upper telescopic member (5) and is connected and fixed to the front plate (61); the rotating shaft (7) is rotatably sleeved on the front plate (61); and the rear end of the rotating shaft (7) is rotatably connected to the rear plate (62); The driving device (8) is arranged on the rear plate (62) and is drivingly connected to the rotating shaft (7).

5. A clamping mechanism according to claim 4, characterized in that: The clamping mechanism further comprises a guide member (9), wherein the guide member (9) is arranged on one side of the upper telescopic member (5), and the guide member (9) is used to limit the rotation of the telescopic end of the upper telescopic member (5).

6. A clamping mechanism according to claim 5, characterized in that: The guide member (9) is a sliding sleeve, which is arranged in the same direction on one side of the upper telescopic member (5). A sliding rod (64) is connected between the front plate (61) and the rear plate (62), and the sliding rod (64) can be slidably sleeved on the inner side of the sliding sleeve.

7. A clamping mechanism according to claim 6, characterized in that: Two of each of the sliding sleeves and the sliding rod (64) are provided. The sliding sleeves are respectively arranged on both sides of the upper telescopic member (5), and the sliding rod (64) and the sliding sleeves are arranged in a one-to-one correspondence.

8. A clamping mechanism according to claim 4, characterized in that: The moving member (6) further comprises a bottom plate (63), wherein the bottom plate (63) is vertically arranged below the rear plate (62), and the top end of the bottom plate (63) is fixedly connected to the rear plate (62); The driving device (8) comprises a lower telescopic member (81) and a connecting rod (82); the lower telescopic member (81) is arranged upward on one side of the bottom plate (63); the bottom end of the lower telescopic member (81) is hinged to the side wall of the bottom plate (63); one end of the connecting rod (82) is hinged to the telescopic end of the lower telescopic member (81); and the other end of the connecting rod (82) is fixedly connected to the side wall of the rotating shaft (7).

9. A clamping mechanism according to claim 8, characterized in that: The upper telescopic member (5) and the lower telescopic member (81) are both cylinders.

10. The clamping mechanism according to claim 1, characterized in that: The axes of the hinged ends of the left clamp arm (2) and the right clamp arm (3) are spaced apart from each other. A left gear (24) is coaxially arranged on the inner side of the left clamp arm (2) and the hinged axis, and a right gear (31) is coaxially arranged on the inner side of the right clamp arm (3) and the hinged axis. The left gear (24) is meshed with the right gear (31).

Images