Clamp

Abstract

The utility model belongs to the technical field of laser processing, and particularly relates to a clamp which comprises a rotation driving assembly, a laser processing assembly and a laser processing assembly. The rotary driving assembly is used for driving the two eccentric clamping assemblies to rotate, the at least two eccentric clamping assemblies are in transmission connection with the rotary driving assembly, and the rotary driving assembly drives the two eccentric clamping assemblies to rotate, so that the distance between the two eccentric clamping assemblies is reduced or increased, and a workpiece is clamped or released. The distance between the two eccentric clamping assemblies is reduced or increased so as to clamp or release the workpiece, the stability of the workpiece is improved, and the clamp is prevented from damaging a conveying device located below the workpiece or an adjacent workpiece.

Description

Technical Field

[0001] The present application belongs to the field of laser processing technology, and more specifically, relates to a clamp. Background Art

[0002] The clamps currently on the market generally use open and close jaws to clamp the workpiece, and the jaws are generally a rigid L-shaped structure. For workpieces in transit, the workpiece may sway when the jaws grasp the workpiece, causing instability and damage to fragile workpieces, and the jaws may wear out the transport device for transporting the workpiece. For stacked workpieces, when the jaws grasp the top workpiece, it is possible to damage the workpieces adjacent to the top workpiece. Utility Model Content

[0003] An embodiment of the present application provides a clamp, which drives two eccentric clamping assemblies to rotate by a rotating driving member, so that the distance between the two eccentric clamping assemblies is reduced or increased to clamp or release the workpiece, improve the stability of the workpiece, and prevent the clamp from damaging the transportation device or adjacent workpiece located below the workpiece.

[0004] The technical solution adopted in the embodiment of the present application is: a clamp, comprising:

[0005] Rotary drive assembly;

[0006] At least two eccentric clamping assemblies are in transmission connection with the rotary drive assembly, and the rotary drive assembly drives the two eccentric clamping assemblies to rotate, so that the distance between the two eccentric clamping assemblies is reduced or increased to clamp or release the workpiece;

[0007] The eccentric clamping assembly includes a rotating shaft and an eccentric abutment. The rotating shaft is transmission-connected to the rotary drive assembly. The eccentric abutment is mounted on the rotating shaft, and a rotation center axis of the eccentric abutment deviates from the rotation center axis of the rotating shaft.

[0008] Optionally, the eccentric clamping assembly also includes a sleeve, the rotating shaft is rotatably inserted in the sleeve, and the eccentric abutment is exposed at the bottom of the sleeve, so that when the workpiece is released, the eccentric abutment does not protrude from the side of the sleeve; when the workpiece is clamped, the eccentric abutment protrudes from the side of the sleeve.

[0009] Optionally, a limiting protrusion is provided at the bottom of the sleeve, and a limiting notch is provided on the side of the eccentric abutment close to the bottom of the sleeve. When the eccentric abutment does not protrude from the side of the sleeve, the limiting protrusion is clamped in the limiting notch to prevent the eccentric abutment from continuing to rotate.

[0010] Optionally, a guide surface is provided at one end of the eccentric abutment member away from the bottom of the sleeve to facilitate the insertion of the eccentric abutment member into the insertion hole of the workpiece.

[0011] Optionally, the rotary drive assembly includes a rotary drive member, a synchronous belt, a driving wheel and a driven wheel, the driving wheel and the driven wheel are respectively connected to an eccentric clamping assembly, the synchronous belt is sleeved on the driving wheel and the driven wheel, and the rotary drive member is transmission-connected to the driving wheel.

[0012] Optionally, the rotating driving member includes a driving part, a first connecting part and an inserting part, the driving part is transmission-connected with the first connecting part to drive the first connecting part to move in a straight line, the first connecting part is provided with a socket matching with the inserting part, the driving wheel is installed on a rotating seat, the rotating seat is provided with a second connecting part, the second connecting part is provided with a waist-shaped hole, the inserting part is inserted in the socket and the waist-shaped hole, and the inserting part can slide along the length direction of the waist-shaped hole with the linear movement of the first connecting part to convert the linear motion into circular motion.

[0013] Optionally, teeth are provided on the side walls of the driving wheel and the driven wheel, a toothed belt is provided on the side of the synchronous belt that is in contact with the driving wheel or the driven wheel, and the teeth are meshed with the toothed belt.

[0014] Optionally, the rotary drive assembly further includes a plurality of guide wheels, and the synchronous belt is sleeved on the guide wheels.

[0015] Optionally, the fixture further includes a moving component and a mounting seat, the eccentric clamping component and the rotary drive component are both mounted on the mounting seat, and the moving component is connected to the mounting seat to move the mounting seat closer to or away from the workpiece.

[0016] Optionally, the moving assembly includes a horizontal moving member and a vertical moving member, the vertical moving member is connected to the mounting seat, and the vertical moving member is connected to the horizontal moving member.

[0017] The beneficial effects of the clamp provided by the embodiment of the present application are: when the clamp of the embodiment of the present application drives the two eccentric clamping assemblies to rotate through the rotary drive assembly, the distance between the eccentric clamping assemblies is reduced, and the eccentric clamping assemblies can abut against the side wall of the workpiece to clamp the workpiece, and the workpiece will not fall during the transportation of the clamp due to the static friction between the eccentric clamping assemblies; when the rotary drive assembly drives the two eccentric clamping assemblies to rotate in the opposite direction, the distance between the eccentric clamping assemblies becomes larger, and the eccentric clamping assemblies do not abut against the side wall of the workpiece to release the workpiece; when the clamp of the embodiment of the present application clamps the workpiece, the eccentric clamping assembly only contacts the side of the workpiece, and does not contact the transportation device or adjacent workpiece located under the workpiece. Compared with the L-shaped opening and closing jaws, the stability of the workpiece is improved, and at the same time, the clamp is prevented from damaging the transportation device or adjacent workpiece located under the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, 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 present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 A schematic diagram of the three-dimensional structure of one embodiment of the clamp provided in the embodiment of the present application;

[0020] Figure 2 A top view of one embodiment of the clamp provided in the embodiment of the present application;

[0021] Figure 3 A bottom view of one embodiment of the clamp provided in the embodiment of the present application;

[0022] Figure 4 for Figure 1 A local enlarged schematic diagram at point A;

[0023] Figure 5 for Figure 3 A local enlarged schematic diagram at B;

[0024] Figure 6 A schematic diagram of the three-dimensional structure of another embodiment of the clamp provided in an embodiment of the present application.

[0025] Among them, the reference numerals in the figure are:

[0026] 1. Rotation drive assembly;

[0027] 11. Rotating drive member; 12. Synchronous belt; 13. Driving wheel; 14. Driven wheel; 15. Guide wheel; 16. Rotating seat;

[0028] 111, driving part; 112, first connecting part; 113, inserting part;

[0029] 131. tooth portion; 161. second connecting portion;

[0030] 2. Eccentric clamping assembly;

[0031] 21. rotating shaft; 22. eccentric abutment member; 23. sleeve;

[0032] 221, limiting notch; 231, limiting convex part;

[0033] 3. Mobile assembly; 4. Mounting base. DETAILED DESCRIPTION

[0034] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0035] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0036] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0038] See also Figure 1 Now, the clamp provided in the embodiment of the present application is described. The clamp provided in the embodiment of the present application includes:

[0039] Rotation drive assembly 1;

[0040] At least two eccentric clamping assemblies 2 are transmission-connected to the rotary drive assembly 1, and the rotary drive assembly 1 drives the two eccentric clamping assemblies 2 to rotate, so that the distance between the two eccentric clamping assemblies 2 is reduced or increased to clamp or release the workpiece.

[0041] When the clamp of the embodiment of the present application drives the two eccentric clamping assemblies 2 to rotate through the rotating drive assembly 1, the distance between the eccentric clamping assemblies 2 is reduced, and the eccentric clamping assemblies 2 can abut against the side wall of the workpiece to clamp the workpiece. The workpiece will not fall during the transportation of the clamp due to the static friction between the eccentric clamping assemblies 2; when the rotating drive assembly 1 drives the two eccentric clamping assemblies 2 to rotate in the opposite direction, the distance between the eccentric clamping assemblies 2 becomes larger, and the eccentric clamping assemblies 2 do not abut against the side wall of the workpiece to release the workpiece; when the clamp of the embodiment of the present application clamps the workpiece, the eccentric clamping assembly 2 only contacts the side of the workpiece and does not contact the transportation device or adjacent workpiece under the workpiece. Compared with the L-shaped opening and closing jaws, the stability of the workpiece is improved, and the clamp is prevented from damaging the transportation device or adjacent workpiece under the workpiece.

[0042] The rotary drive assembly 1 in the embodiment of the present application may include two rotary motors, and the two rotary motors are respectively connected to an eccentric clamping assembly 2 to drive the eccentric clamping assembly 2 to rotate. In addition, the rotary drive assembly 1 may also include two rotary cylinders.

[0043] The eccentric clamping assembly 2 in the embodiment of the present application may be an eccentric wheel, and the rotary drive assembly 1 is transmission-connected with the eccentric wheel to drive the spacing between the eccentric wheels to decrease or increase.

[0044] The number of the eccentric clamping components 2 in the embodiment of the present application can also be adjusted according to the shape and size of the workpiece. When the workpiece is rectangular, four eccentric clamping components 2 can be provided, respectively abutting against the four sides of the rectangular workpiece; when the workpiece is triangular, three eccentric clamping components 2 can be provided, respectively abutting against the three sides of the rectangular workpiece.

[0045] Preferably, see Figure 1 , Figure 3 , Figure 4 , Figure 5 The eccentric clamping assembly 2 includes a rotating shaft 21 and an eccentric abutment 22. The rotating shaft 21 is transmission-connected to the rotating drive assembly 1. The eccentric abutment 22 is mounted on the rotating shaft 21, and the rotation center axis of the eccentric abutment 22 deviates from the rotation center axis of the rotating shaft 21.

[0046] The eccentric abutment member 22 may be an eccentric wheel mounted on one end of the rotating shaft 21, the eccentric wheel being used to abut against the workpiece, and the other end of the rotating shaft 21 is in transmission connection with the rotary drive assembly 1. When the rotary drive assembly 1 drives the rotating shaft 21 to rotate, the eccentric wheel on the rotating shaft 21 may be driven to rotate, thereby changing the spacing between the eccentric wheels of the two eccentric clamping assemblies 2 to clamp or release the workpiece.

[0047] The eccentric clamping assembly 2 also includes a sleeve 23, the rotating shaft 21 is rotatably inserted in the sleeve 23, the central axis of the rotating shaft 21 deviates from the central axis of the sleeve 23, and the eccentric abutment 22 is rotatably arranged at the bottom of the sleeve 23. The eccentric abutment is exposed at the bottom of the sleeve, so that when the workpiece is released, the eccentric abutment does not protrude from the side of the sleeve; when the workpiece is clamped, the eccentric abutment protrudes from the side of the sleeve.

[0048] The sleeve 23 in the embodiment of the present application does not rotate with the rotating shaft 21 when the rotating shaft 21 rotates. The sleeve 23 can prevent the eccentric abutment member 22 from protruding out of the sleeve 23 after releasing the workpiece, so as to prevent the eccentric abutment member 22 from being knocked off when the clamp moves.

[0049] A limiting protrusion 231 is provided at the bottom of the sleeve 23, and a limiting notch 221 is provided at one side of the eccentric abutment 22 close to the bottom of the sleeve 23. When the eccentric abutment does not protrude from the side surface of the sleeve, the limiting protrusion 231 is clamped in the limiting notch 221 to prevent the eccentric abutment 22 from continuing to rotate.

[0050] The limiting protrusion 231 in the embodiment of the present application can be a limiting pin threadedly connected to the bottom of the sleeve 23, and the limiting pin is inserted into the bottom of the sleeve 23. When the clamp releases the workpiece, the rotary drive assembly 1 rotates the rotating shaft 21, and the limiting protrusion 231 can be inserted into the limiting notch 221 to prevent the eccentric abutment 22 from continuing to rotate, thereby preventing the eccentric abutment 22 from protruding out of the sleeve 23 and interfering with the workpiece.

[0051] One end of the eccentric abutment member 22 away from the bottom of the sleeve 23 is provided with a guide surface to facilitate the eccentric abutment member 22 to be inserted into the insertion hole of the workpiece.

[0052] The guide surface in the embodiment of the present application can be an inclined arc surface or plane, and the inclined arc surface or plane forms a tip at one end of the eccentric abutment 22, and the workpiece is provided with a socket at the edge for inserting the eccentric abutment 22. The tip facilitates the eccentric abutment 22 to enter the socket.

[0053] Preferably, see Figure 1 , Figure 2The rotary drive component 1 includes a rotary drive member 11, a synchronous belt 12, a driving wheel 13 and a driven wheel 14. The driving wheel 13 and the driven wheel 14 are respectively connected to an eccentric clamping component 2. The synchronous belt 12 is sleeved on the driving wheel 13 and the driven wheel 14. The rotary drive member 11 is connected to the driving wheel 13 in transmission.

[0054] The rotary drive member 11 in the embodiment of the present application can be a rotary cylinder or a rotary motor, and the driving wheel 13 or the driven wheel 14 is connected to the rotating shaft 21 of the eccentric clamping assembly 2. The rotary drive member 11 is connected to the driving wheel 13 by transmission to drive the driving wheel 13 to rotate, and the driving wheel 13 drives the driven wheel 14 to rotate synchronously through the synchronous belt 12, so that the eccentric abutment members 22 of the two eccentric clamping assemblies 2 can be rotated to change the spacing between the two eccentric abutment members 22, thereby clamping or releasing the workpiece. If it is necessary to add an eccentric clamping assembly 2, it is necessary to add a corresponding number of driven wheels 14. When the driving wheel 13 rotates, a number of driven wheels 14 are driven to rotate through the synchronous belt 12.

[0055] Preferably, the rotating driving member 11 includes a driving part 111, a first connecting part 112 and an inserting part 113. The driving part 111 is transmission-connected with the first connecting part 112 to drive the first connecting part 112 to move in a straight line. The first connecting part 112 is provided with a socket matching the inserting part 113. The driving wheel 13 is installed on a rotating seat 16. The rotating seat 16 is provided with a second connecting part 161. The second connecting part 161 is provided with a waist-shaped hole. The inserting part 113 is inserted into the socket and the waist-shaped hole. The inserting part 113 can slide along the length direction of the waist-shaped hole with the linear movement of the first connecting part 112 to convert the linear motion into circular motion.

[0056] The driving part 111 in the embodiment of the present application can be a cylinder, an electric cylinder or a linear motor. The driving part 111 drives the first connecting part 112 to move in a straight line, so that the inserting part 113 on the first connecting part 112 slides in the waist-shaped hole of the second connecting part 161 on the rotating seat 16. When the inserting part 113 slides in the waist-shaped hole of the second connecting part 161, the inserting part 113 will abut against the inner side wall of the waist-shaped hole to push the second connecting part 161, thereby rotating the rotating seat 16 and rotating the driving wheel 13.

[0057] The rotary drive member 11 in the embodiment of the present application has a lower cost than the rotary cylinder in the prior art.

[0058] The side walls of the driving wheel 13 and the driven wheel 14 are both provided with teeth 131 , and the side of the synchronous belt 12 that is in contact with the driving wheel 13 or the driven wheel 14 is provided with a toothed belt, and the teeth 131 mesh with the toothed belt.

[0059] The engagement of the tooth portion 131 with the toothed belt in the embodiment of the present application can increase the friction between the synchronous belt 12 and the driving wheel 13 and the driven wheel 14, thereby preventing the synchronous belt 12 from being unable to drive the driven wheel 14 and the driving wheel 13 to rotate synchronously due to a decrease in tension, thereby improving the stability of the rotating drive component 11.

[0060] The rotary drive assembly 1 further includes a plurality of guide wheels 15 , and the synchronous belt 12 is sleeved on the guide wheels 15 .

[0061] When the two eccentric clamping assemblies 2 are far apart, and there are other components between the two eccentric clamping assemblies 2 that need to be avoided, the guide wheel 15 can guide the synchronous belt 12 to avoid other components. The side wall of the guide wheel 15 can also be provided with a tooth portion 131 that meshes with the toothed belt of the synchronous belt 12.

[0062] See also Figure 6 The fixture also includes a moving component 3 and a mounting seat 4. The eccentric clamping component 2 and the rotary drive component 1 are both mounted on the mounting seat 4. The moving component 3 is connected to the mounting seat 4 to move the mounting seat 4 closer to or away from the workpiece.

[0063] The moving assembly comprises a horizontal moving member and a vertical moving member, the vertical moving member is connected to the mounting seat, and the vertical moving member is connected to the horizontal moving member.

[0064] The horizontal moving member and the vertical moving member in the embodiment of the present application are used to realize the horizontal and vertical displacement of the fixture respectively. The horizontal moving member and the vertical moving member can be a mobile platform driven by a motor, a cylinder or an electric cylinder.

[0065] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A clamp, characterized in that: include: Rotary drive assembly; At least two eccentric clamping assemblies are in transmission connection with the rotary drive assembly, and the rotary drive assembly drives the two eccentric clamping assemblies to rotate, so that the distance between the two eccentric clamping assemblies is reduced or increased to clamp or release the workpiece; The eccentric clamping assembly includes a rotating shaft and an eccentric abutment. The rotating shaft is transmission-connected to the rotary drive assembly. The eccentric abutment is mounted on the rotating shaft, and a rotation center axis of the eccentric abutment deviates from the rotation center axis of the rotating shaft.

2. The clamp according to claim 1, characterized in that: The eccentric clamping assembly also includes a sleeve, the rotating shaft is rotatably inserted in the sleeve, and the eccentric abutment is exposed at the bottom of the sleeve, so that when the workpiece is released, the eccentric abutment does not protrude from the side of the sleeve; when the workpiece is clamped, the eccentric abutment protrudes from the side of the sleeve.

3. The clamp according to claim 2, characterized in that: A limiting protrusion is provided at the bottom of the sleeve, and a limiting notch is provided on one side of the eccentric abutment close to the bottom of the sleeve. When the eccentric abutment does not protrude from the side surface of the sleeve, the limiting protrusion is clamped in the limiting notch to prevent the eccentric abutment from continuing to rotate.

4. The clamp according to claim 3, characterized in that: One end of the eccentric abutment away from the bottom of the sleeve is provided with a guide surface to facilitate the eccentric abutment to be inserted into the insertion hole of the workpiece.

5. The clamp according to any one of claims 1 to 4, characterized in that: The rotary drive assembly includes a rotary drive member, a synchronous belt, a driving wheel and a driven wheel. The driving wheel and the driven wheel are respectively connected to an eccentric clamping assembly. The synchronous belt is sleeved on the driving wheel and the driven wheel. The rotary drive member is drivingly connected to the driving wheel.

6. The clamp according to claim 5, characterized in that: The rotary drive member includes a driving part, a first connecting part and an inserting part. The driving part is transmission-connected with the first connecting part to drive the first connecting part to move in a straight line. The first connecting part is provided with a socket matched with the inserting part. The driving wheel is installed on a rotating seat. The rotating seat is provided with a second connecting part. The second connecting part is provided with a waist-shaped hole. The inserting part is inserted into the socket and the waist-shaped hole. The inserting part can slide along the length direction of the waist-shaped hole with the linear movement of the first connecting part to convert the linear motion into circular motion.

7. The clamp according to claim 6, characterized in that The side walls of the driving wheel and the driven wheel are both provided with teeth, and a toothed belt is provided on the side of the synchronous belt that is in contact with the driving wheel or the driven wheel, and the teeth are meshed with the toothed belt.

8. The clamp according to claim 6, characterized in that: The rotary drive assembly also includes a plurality of guide wheels, and the synchronous belt is sleeved on the guide wheels.

9. The clamp according to claim 1, characterized in that: It also includes a moving component and a mounting seat, the eccentric clamping component and the rotary drive component are both mounted on the mounting seat, and the moving component is connected to the mounting seat to move the mounting seat closer to or away from the workpiece.

10. The clamp according to claim 9, characterized in that The moving assembly comprises a horizontal moving member and a vertical moving member, the vertical moving member is connected to the mounting seat, and the vertical moving member is connected to the horizontal moving member.

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