Clamping jaw device capable of separating stacked workpieces

Abstract

The utility model provides a clamping jaw device capable of separating stacked workpieces. The clamping jaw device comprises an expansion and contraction driving piece and a plurality of grabbing assemblies. The grabbing assembly comprises clamping arms, a separation driving part, a bearing block and a resisting block; the expansion and contraction driving part is used for synchronously driving each clamping arm to perform expansion or contraction action; the separation driving piece and the stopping block are both arranged on the clamping arm, a bearing part is arranged on the bearing block, and the separation driving piece is used for driving the bearing block to be close to or away from the stopping block. By designing the separation driving pieces, the bearing blocks and the stopping blocks on the clamping arms, workpieces which are adhered and clamped due to stacking can be separated and grabbed, the structural design is ingenious, the grabbing success rate of a single workpiece is increased, and the material circulation efficiency is correspondingly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gripper mechanisms, in particular to a clamping claw device capable of separating and stacking workpieces. Background Art

[0002] After some disc-shaped workpieces are stacked, two adjacent workpieces may stick together or get stuck. In practice, a single workpiece is usually automatically grasped by a manipulator driving a gripper. During the grasping process, if the workpieces stick together, the existing gripper structure cannot separate the stuck workpieces, thus affecting the normal flow of materials. Utility Model Content

[0003] In view of the defects in the prior art, the purpose of the utility model is to provide a clamping jaw device capable of separating stacked workpieces, so as to realize the separation and grasping of adhered workpieces.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a clamping device for separable stacked workpieces, including an expansion and contraction drive member and a plurality of grabbing components; the grabbing components include a clamping arm, a separation drive member, a supporting block and a stop block, and the expansion and contraction drive member is used to synchronously drive each of the clamping arms to expand or contract; the separation drive member and the stop block are both arranged on the clamping arm, a supporting portion is provided on the supporting block, and the separation drive member is used to drive the supporting block to approach or move away from the stop block.

[0005] Preferably, a retaining portion is provided on the retaining block, and the retaining portion and the supporting portion extend in the same direction.

[0006] Preferably, the bottom surface of the supporting portion is provided with a first inclined surface, and the bottom surface of the blocking portion is provided with a second inclined surface.

[0007] Preferably, the top surface of the supporting portion is provided with a third inclined surface, and the top surface of the blocking portion is provided with a fourth inclined surface.

[0008] Preferably, each of the grabbing components is provided with two supporting blocks, and the blocking block is arranged between the two supporting blocks.

[0009] Preferably, a first mounting block is provided on the pushing block of the separation driving member, and the two supporting blocks are respectively provided on the first mounting block.

[0010] Preferably, the first mounting block is provided with a clearance gap, and the clamp arm passes through the clearance gap.

[0011] Preferably, the clamping arm is in an "L"-shaped structure, comprising a first arm body and a second arm body connected to each other, the first arm body being connected to the expansion and contraction driving member, the separation driving member being arranged on the second arm body, and the stop block being arranged at one end of the second arm body away from the first arm body.

[0012] Preferably, a second mounting block is provided on the second arm body, and the separation driving member is provided on the second mounting block.

[0013] Preferably, a mounting seat is provided on the expansion and contraction driving member.

[0014] Beneficial effects of the utility model:

[0015] The utility model discloses a clamping claw device which can separate stacked workpieces. By designing a separation driving member, a supporting block and a resisting block on the clamping arm, the device can separate and grasp the workpieces which are stuck or jammed due to stacking. The ingenious structural design improves the success rate of grasping a single workpiece and correspondingly improves the material flow efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0017] Figure 1 A schematic structural diagram of a clamping device for detachably stacking workpieces provided in one embodiment of the utility model;

[0018] Figure 2 It is a schematic diagram of the structure of the grabbing component;

[0019] Figure 3 is a side view of the grab assembly;

[0020] Figure 4 is a structural schematic diagram of a supporting block;

[0021] Figure 5 It is a schematic diagram of the structure of the separation driving member and the supporting block;

[0022] Figure 6 It is a schematic diagram of the structure of the clamp arm and the stop block;

[0023] Figure 7 A schematic diagram of the structure of the clamp arm passing through the clearance gap;

[0024] Figure 8 It is a structural schematic diagram of the expansion and contraction drive component;

[0025] Fig. 9 It is a structural schematic diagram showing the separation of the supporting block and the resisting block;

[0026] Fig.10 It is a cross-sectional schematic diagram of the supporting portion and the blocking portion extending into the gap between two workpieces;

[0027] Reference numerals:

[0028] 10. expansion and contraction drive member; 11. slider; 20. grab assembly; 21. clamping arm; 211. first arm body; 212. second arm body; 22. separation drive member; 221. push block; 23. supporting block; 231. supporting part; 232. first inclined surface; 233. third inclined surface; 24. blocking block; 241. blocking part; 242. second inclined surface; 243. fourth inclined surface; 25. first mounting block; 251. clearance gap; 26. second mounting block; 27. connecting block; 30. mounting seat. DETAILED DESCRIPTION

[0029] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0030] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.

[0031] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element 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 invention.

[0032] In addition, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present utility model, the meaning of "plurality" is more than two, unless otherwise clearly and specifically limited.

[0033] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0034] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] like Figure 1-10 As shown, in one embodiment of the utility model, a clamping device for separable stacked workpieces is provided, including an expansion and contraction drive member 10 and three grabbing assemblies 20, wherein the grabbing assembly 20 includes a clamping arm 21, a separation drive member 22, a support block 23 and a stop block 24, and the expansion and contraction drive member 10 is used to synchronously drive each clamping arm 21 to expand or contract. The separation drive member 22 and the stop block 24 are both fixedly mounted on the clamping arm 21, and the support block 23 is provided with a support portion 231 for supporting the workpiece, and the separation drive member 22 is used to drive the support block 23 to move closer to or away from the stop block 24. Specifically, the expansion and contraction drive member 10 uses a three-jaw pneumatic chuck structure, and the three clamping arms 21 are respectively fixedly mounted on the three sliders 11 on the expansion and contraction drive member 10, and the separation drive member 22 uses a cylinder. The three-jaw pneumatic chuck and the cylinder are both existing technologies and will not be repeated in this embodiment.

[0036] When it is necessary to grab a workpiece, a moving mechanism (such as a manipulator, not shown in the accompanying drawings) drives the clamping device to move to the workpiece stacking place, and then the expansion and contraction drive member 10 drives the three clamping arms 21 to perform a contraction action, so that each group of supporting blocks 23 and blocking blocks 24 are moved to the gap between two adjacent workpieces. Subsequently, the separation drive member 22 drives the supporting block 23 to move upward, and the supporting portion 231 will gradually contact the topmost workpiece (i.e., the first workpiece, arranged from top to bottom in a stacking manner). If the stacked workpieces are sticky or stuck, the blocking block 24 will block the second workpiece, and in the process of the three supporting portions 231 gradually rising, the workpiece will be separated from the second workpiece, so that the stacked workpieces can be separated and grabbed.

[0037] The present embodiment discloses a clamping device capable of separating stacked workpieces. By designing a separation drive member 22, a supporting block 23 and a stop block 24 on a clamping arm 21, the device is capable of separating and grasping workpieces that are stuck or jammed due to stacking. The ingenious structural design improves the success rate of grasping a single workpiece and correspondingly improves the material flow efficiency.

[0038] In one embodiment, a stopper 241 is provided on the stopper block 24, and the stopper 241 and the supporting portion 231 extend in the same direction. When separating the stacked workpieces, the design of the stopper 241 can increase the contact area between the stopper block 24 and the second workpiece, thereby improving the separation effect of the first workpiece and the second workpiece. Similarly, the design of the supporting portion 231 also correspondingly increases the contact area between the supporting block 23 and the first workpiece, thereby improving the gripping effect of the first workpiece.

[0039] Furthermore, the bottom surface of the supporting portion 231 is provided with a first inclined surface 232, and the bottom surface of the resisting portion 241 is provided with a second inclined surface 242. The top surface of the supporting portion 231 is provided with a third inclined surface 233, and the top surface of the resisting portion 241 is provided with a fourth inclined surface 243. The supporting portion 231 and the resisting portion 241 are both designed as wedge-shaped structures, so that the supporting portion 231 and the resisting portion 241 can be easily extended into the gap between the first workpiece and the second workpiece, thereby ensuring the normal operation of the clamping device.

[0040] In one embodiment, each gripping assembly 20 is provided with two supporting blocks 23, the two supporting blocks 23 are connected by a connecting block 27, and the retaining block 24 is disposed between the two supporting blocks 23. By designing two supporting blocks 23 and arranging the retaining block 24 between the two supporting blocks 23, when the first workpiece and the second workpiece are separated, the supporting portions 231 of the two supporting blocks 23 will simultaneously support the first workpiece, thereby improving the stability of supporting the first workpiece.

[0041] Furthermore, a first mounting block 25 is fixedly mounted on the push block 221 of the separation driving member 22, and the two supporting blocks 23 are respectively fixedly mounted on the first mounting block 25. When the separation driving member 22 drives the push block 221 to perform a lifting action, the first mounting block 25 will synchronously drive the two supporting blocks 23 to move away from or close to the blocking block 24, thereby improving the stability of the installation of the supporting blocks 23.

[0042] Furthermore, the first mounting block 25 has a clearance notch 251, and the clamp arm 21 passes through the clearance notch 251. The design of the clearance notch 251 enables the first mounting block 25 to effectively avoid the clamp arm 21, so that the clamp arm 21 does not interfere with the movement of the first mounting block 25 and the two supporting blocks 23.

[0043] In one embodiment, the clamp arm 21 is in an "L"-shaped structure. The clamp arm 21 includes a first arm body 211 and a second arm body 212 connected to each other. The first arm body 211 is fixedly connected to the slider 11 corresponding to the expansion and contraction driving member 10. The separation driving member 22 is arranged on the second arm body 212. The stop block 24 is arranged at one end of the second arm body 212 away from the first arm body 211. The second arm body 212 is provided with a second mounting block 26, and the separation driving member 22 is arranged on the second mounting block 26. Among them, the first arm body 211 extends along the sliding direction of the corresponding slider 11 on the expansion and contraction driving member 10, and the second mounting block 26 is fixedly connected to the second arm body 212 and the separation driving member 22. In this way, the firmness of the installation of the separation driving member 22 is guaranteed.

[0044] In one embodiment, a mounting seat 30 is provided on the expansion and contraction driving member 10 . The design of the mounting seat 30 facilitates the connection and fixation between the expansion and contraction driving member 10 and the moving mechanism, thereby improving the convenience of assembly and disassembly.

[0045] In the specification of the present utility model, a lot of specific details are described. However, it is understood that the embodiments of the present utility model can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this specification.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A clamping device capable of separating stacked workpieces, characterized in that: It comprises an expansion and contraction driving member (10) and a plurality of grabbing components (20); The grabbing assembly (20) comprises a clamping arm (21), a separation driving member (22), a supporting block (23) and a blocking block (24), and the expansion and contraction driving member (10) is used to synchronously drive each clamping arm (21) to perform an expansion or contraction action; The separation drive member (22) and the stop block (24) are both arranged on the clamp arm (21), and a support portion (231) is provided on the support block (23). The separation drive member (22) is used to drive the support block (23) to approach or move away from the stop block (24).

2. The clamping device for separably stacking workpieces according to claim 1, characterized in that: The blocking block (24) is provided with a blocking portion (241), and the blocking portion (241) and the supporting portion (231) extend in the same direction.

3. The clamping device for separably stacking workpieces according to claim 2, characterized in that: The bottom surface of the supporting portion (231) is provided with a first inclined surface (232), and the bottom surface of the blocking portion (241) is provided with a second inclined surface (242).

4. The clamping device for separably stacking workpieces according to claim 2, characterized in that: The top surface of the supporting portion (231) is provided with a third inclined surface (233), and the top surface of the blocking portion (241) is provided with a fourth inclined surface (243).

5. The clamping device for separably stacked workpieces according to any one of claims 1 to 4, characterized in that: Each of the grabbing components (20) is provided with two supporting blocks (23), and the blocking block (24) is arranged between the two supporting blocks (23).

6. The clamping device for separably stacking workpieces according to claim 5, characterized in that: A first mounting block (25) is provided on the push block (221) of the separation driving member (22), and the two supporting blocks (23) are respectively provided on the first mounting block (25).

7. The clamping device for separably stacking workpieces according to claim 6, characterized in that: The first mounting block (25) has a clearance notch (251), and the clamping arm (21) passes through the clearance notch (251).

8. The clamping device for separably stacking workpieces according to claim 1, characterized in that: The clamp arm (21) is in an "L"-shaped structure. The clamp arm (21) comprises a first arm body (211) and a second arm body (212) which are connected to each other. The first arm body (211) is connected to the expansion and contraction driving member (10). The separation driving member (22) is arranged on the second arm body (212). The stop block (24) is arranged at an end of the second arm body (212) away from the first arm body (211).

9. The clamping device for separably stacking workpieces according to claim 8, characterized in that: A second mounting block (26) is provided on the second arm body (212), and the separation driving member (22) is provided on the second mounting block (26).

10. The clamping device for separably stacking workpieces according to claim 1, characterized in that: A mounting seat (30) is provided on the expansion and contraction driving member (10).

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