Clamping device

Abstract

A clamping device comprises: a support plate; the driving assembly comprises a connecting piece, a driving piece and a pushing head, and the driving piece drives the pushing head to move in the first direction; the clamping assembly comprises a base, a sliding piece, a pressing piece, a first elastic piece and a telescopic rod, the base is connected to the supporting plate, the base is provided with a wedge-shaped piece and two limiting pieces, the wedge-shaped piece is provided with a first inclined face, the sliding piece is slidably connected with the two limiting pieces, the pressing piece is slidably connected to the sliding piece, and the two ends of the first elastic piece are connected with the sliding piece and the pressing piece correspondingly; the first elastic piece pushes the pressing piece to abut against the first inclined face, and the two ends of the telescopic rod are connected to the sliding piece and the push head correspondingly. The locking assembly comprises a rotating piece rotationally connected to the connecting piece, a locking piece connected to the end, close to the supporting plate, of the rotating piece, and a pushing piece connected to the end, away from the supporting plate, of the rotating piece. The clamping device can be used for clamping and positioning a product with a hollow structure, and can keep a clamping state under the condition that the air cylinder is cut off.

Description

Technical Field

[0001] The present application relates to the technical field of positioning devices, and in particular to a clamping device. Background Art

[0002] When processing products, they need to be clamped and positioned before processing. Some products have hollow structures. When clamping such products, part of the physical position of the product needs to be clamped. Therefore, the traditional cylinder, motor and other driving devices drive the pressure plate to clamp and position. The method cannot meet this type of usage requirements.

[0003] Moreover, during the production process, the power of the driving device may be lost, causing the product to loosen, which in turn may cause poor product processing. Utility Model Content

[0004] In view of the above, it is necessary to propose a clamping device that can clamp and position products with hollow structures and can maintain the clamping state when the power of the driving device disappears.

[0005] The cam is an elastic member connected to the support frame, and the cam is connected to the support frame by the elastic member of the elastic member. The cam is connected with the support member at two ends by the spring, and the two ends of the spring are connected with the support member at two ends thereof of the cam, and the two ends of the spring are connected with the support member at two ends thereof of the cam.

[0006] In the clamping device, when the driving member drives the sliding member to move downward through the push head and the telescopic rod, the pressing member moves downward synchronously with the sliding member, and at the same time, the pressing member moves away from the wedge member under the action of the first inclined surface of the wedge member, and then can cooperate with the support plate to clamp the workpiece. In addition, when the push head moves downward, it pushes the pushing member to move away from the pushing head, the pushing member drives the rotating member to rotate, and the rotating member drives the locking member to push against the telescopic rod, and then locks the telescopic rod. If the driving member is cut off when the pressing member clamps the workpiece, causing the push head to move up, the telescopic rod retracts at this time, but the locking member still pushes against one end of the telescopic rod close to the sliding member, which can ensure that the sliding member does not move upward to cause the pressing member to release the workpiece, thereby improving the yield of the processed workpiece. When the workpiece needs to be released, the driving member drives the push head to move upward until the push head pushes against the locking member to release the telescopic rod, and the telescopic rod can move upward, thereby driving the sliding member and the pressing member to release the workpiece, and at the same time, the first elastic member pushes the pressing member to move toward the wedge member, so that the pressing member avoids the workpiece.

[0007] In some embodiments, the locking member is provided with a first protrusion extending along a third direction, the pushing member is provided with a second protrusion extending along the third direction, the connecting member is provided with a first sliding groove adapted to the first protrusion and a second sliding groove adapted to the second protrusion, the first protrusion cooperates with the first sliding groove so that the locking member is slidably connected to the connecting member along the third direction and the locking member is limited in the first direction, the second protrusion cooperates with the second sliding groove so that the pushing member is slidably connected to the connecting member along the third direction and the pushing member is limited in the first direction; wherein, the first direction, the second direction and the third direction are perpendicular to each other.

[0008] In some embodiments, a second inclined surface arranged toward the push head is provided on a side of the locking member close to the telescopic rod, and a third inclined surface arranged toward the push head is provided on a side of the pushing member close to the push head. When the push head moves along the first direction and abuts against the locking member, the push head abuts against the second inclined surface and thus pushes the locking member to move away from the axis of the push head. When the push head moves in the opposite direction of the first direction and abuts against the pushing member, the push head abuts against the third inclined surface and thus pushes the pushing member to move away from the axis of the push head.

[0009] In some embodiments, a fourth inclined surface matched with the second inclined surface is provided at one end of the push head close to the locking member, and a fifth inclined surface matched with the third inclined surface is provided at one end of the push head close to the pushing member.

[0010] In some embodiments, the locking assembly also includes a pin shaft, which is connected to the connecting member and extends along the second direction. The rotating member is an arc-shaped structure. The middle part of the rotating member is rotatably connected to the connecting member through the pin shaft, and the two ends of the rotating member are respectively arranged toward the connecting member and the driving member.

[0011] In some embodiments, the rotating member is provided with an arc-shaped hole, the center of which is located on the axis of the pin shaft, and the connecting member is provided with a positioning pin inserted in the arc-shaped hole, and the positioning pin cooperates with the arc-shaped hole to limit the rotation angle of the rotating member.

[0012] In some embodiments, the driving assembly further includes a connecting rod, both ends of which are respectively connected to the driving member and the pushing head, and the diameter of the connecting rod is smaller than the diameter of the pushing head.

[0013] In some embodiments, the telescopic rod includes an outer rod, an inner rod and a second elastic member, the outer rod is connected to the sliding member and is arranged toward the pushing head, the inner rod is connected to the pushing head and is inserted into the outer rod and can slide in the outer rod, the second elastic member is sleeved on the outside of the inner rod, and the two ends of the second elastic member are respectively abutted against the outer rod and the pushing head, and the second elastic member pushes the outer rod to move away from the pushing head.

[0014] In some embodiments, a third sliding groove arranged along the first direction is provided on the side where the two limiting members are close to each other, and a third protrusion respectively adapted to the two third sliding grooves is provided on the sliding member, and the third protrusion cooperates with the third sliding groove to limit the limiting member.

[0015] In some embodiments, the sliding member is provided with a receiving groove and a fourth sliding groove extending along the second direction, the pressing member is provided with a fourth protrusion and a supporting portion, the fourth protrusion is arranged in the fourth sliding groove to make the pressing member and the sliding member slidably connected, the first elastic member is arranged in the receiving groove and its two ends respectively abut against the groove wall of the receiving groove and the supporting portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of the clamping device provided in an embodiment of the present application.

[0017] Figure 2 for Figure 1 The schematic structural diagram of the clamping device shown is a cross-section along line II-II.

[0018] Figure 3 for Figure 1 A schematic diagram of the exploded structure of the driving assembly and the locking assembly in the clamping device is shown.

[0019] Figure 4 for Figure 1 A schematic diagram of the exploded structure of the clamping assembly in the clamping device shown.

[0020] Figure 5 for Figure 1 The illustrated schematic diagram is a structural diagram of the driving assembly, the clamping assembly and the locking assembly in the clamping device when the pressing member does not clamp the workpiece.

[0021] Figure 6 for Figure 1 The shown schematic diagram is a structural diagram of the state of the clamping device when clamping a workpiece.

[0022] Figure 7 for Figure 6 A schematic diagram of the state structure of the driving assembly, the clamping assembly and the locking assembly in the clamping device when the pressing member clamps the workpiece.

[0023] Main component symbols

[0024] Clamping device 100

[0025] Support plate 10

[0026] Drive assembly 20

[0027] Connector 21

[0028] First chute 211

[0029] Second chute 212

[0030] Positioning pin 213

[0031] Driving member 22

[0032] Push head 23

[0033] Fourth inclined surface 231

[0034] Fifth inclined surface 232

[0035] Connecting rod 24

[0036] Clamping assembly 30

[0037] Base 31

[0038] Wedge 311

[0039] First inclined surface 3111

[0040] Limiting piece 312

[0041] The third chute 3121

[0042] Slider 32

[0043] The third protrusion 321

[0044] Accommodation groove 322

[0045] Fourth chute 323

[0046] Pressing member 33

[0047] Fourth protrusion 331

[0048] The supporting part 332

[0049] The first elastic member 34

[0050] Telescopic rod 35

[0051] External rod 351

[0052] Inner rod 352

[0053] The second elastic member 353

[0054] Locking assembly 40

[0055] Rotating member 41

[0056] Arc hole 411

[0057] Locking member 42

[0058] First protrusion 421

[0059] Second slope 422

[0060] Pushing member 43

[0061] The second protrusion 431

[0062] The third inclined surface 432

[0063] Pin 44

[0064] Workpiece 200 DETAILED DESCRIPTION

[0065] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0066] In the description of the present application, it should be understood that the terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, in the description of the present application, it should be noted that the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0067] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the term "connection" 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, an electrical connection, or mutual communication, it can be a direct connection, or it can be indirectly connected 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 application can be understood according to the specific circumstances. Some embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.

[0068] The following is a further description of the embodiments of the present application in conjunction with the accompanying drawings. Figure 1 , define the X-axis direction as the second direction, the Y-axis direction as the third direction, and the Z-axis direction as the first direction.

[0069] See also Figure 1 , Figure 2 and Figure 3 An embodiment of the present application provides a clamping device 100 for clamping and positioning a workpiece 200 . The clamping device 100 includes a support plate 10 , a driving assembly 20 , a clamping assembly 30 and a locking assembly 40 .

[0070] Specifically, the support plate 10 may be connected to structures such as support legs (not shown), or the support plate 10 may be fixedly connected to an external device (not shown) to support the support plate 10 .

[0071] The driving assembly 20 includes a connecting member 21 connected to the support plate 10, a driving member 22 connected to one end of the connecting member 21 away from the support plate 10, and a push head 23 connected to the driving member 22, and the driving member 22 drives the push head 23 to move along the Z-axis direction. It can be understood that an accommodating space is provided inside the connecting member 21 to accommodate structures such as the push head 23. The driving member 22 can be a cylinder, and the cross section of the push head 23 in the XY plane can be circular.

[0072] See also Figures 1 to 4The clamping assembly 30 includes a base 31, a sliding member 32, a pressing member 33, a first elastic member 34 and a telescopic rod 35. The base 31 is connected to the side of the support plate 10 away from the connecting member 21. The side of the base 31 away from the support plate 10 is provided with a wedge 311 and two stoppers 312 symmetrically arranged relative to the X-axis direction. The wedge 311 and the two stoppers 312 are spaced apart along the X-axis direction. The wedge 311 is provided with a first inclined surface 3111 gradually away from the two stoppers 312 along the Z-axis direction. The sliding member 32 is arranged between the two limit members 312 and is slidably connected to the two limit members 312 along the Z-axis direction. The holding member 33 is slidably connected to the sliding member 32 along the X-axis direction. The first elastic member 34 is arranged along the X-axis direction and its two ends are respectively connected to the sliding member 32 and the holding member 33. The first elastic member 34 pushes the holding member 33 to abut against the first inclined surface 3111. The telescopic rod 35 is movably inserted between the support plate 10 and the base 31, and the two ends of the telescopic rod 35 are respectively connected to the sliding member 32 and the push head 23.

[0073] The base 31 may be a plate-like structure, and the plate-like base 31 may improve the stability of the connection with the support plate 10 and the stability of the support for the wedge 311 and the two stoppers 312. The wedge 311 and the two stoppers 312 may be connected to the base 31 by bolts or the like. In some other embodiments, the base 31, the wedge 311 and the two stoppers 312 may be processed by an integral molding method. It is understood that the support plate 10 and the base 31 are both provided with through holes and other structures corresponding to the telescopic rod 35 to avoid the telescopic rod 35 so that the telescopic rod 35 can move along the Z-axis direction. The sliding member 32 may be a plate-like structure, the holding member 33 may be a plate-like structure, and the first elastic member 34 may be a spring or the like.

[0074] The locking assembly 40 includes a rotating member 41 rotatably connected to the inside of the connecting member 21, a locking member 42 rotatably connected to one end of the rotating member 41 close to the support plate 10, and a pushing member 43 rotatably connected to one end of the rotating member 41 away from the support plate 10. It can be understood that the rotating member 41 rotates in the YZ plane, and the side of the locking member 42 facing the telescopic rod 35 can be provided with a contoured structure adapted to the telescopic rod 35 to improve the stability of the locking member 42 when clamping the telescopic rod 35.

[0075] See also Figure 3 , Figure 4 and Figure 5The driving member 22 drives the sliding member 32 to move in the opposite direction of the Z axis through the pushing head 23 and the telescopic rod 35, and then drives the holding member 33 to move in the opposite direction of the Z axis. While the holding member 33 moves downward, it moves in the direction away from the wedge member 311 under the push of the first inclined surface 3111, and then cooperates with the support plate 10 to clamp the workpiece 200. When the pushing head 23 moves in the opposite direction of the Z axis, it pushes the pushing member 43 away from the pushing head 23, thereby driving the rotating member 41 to rotate, and the rotating member 41 drives the locking member 42 to move toward the telescopic rod 35 and then resists the telescopic rod 35.

[0076] Please also see Figure 6 and Figure 7 When the driving member 22 drives the pushing head 23 and the telescopic rod 35 to move along the Z-axis direction, the pushing head 23 contacts the locking member 42 and then pushes the locking member 42 away from the telescopic rod 35, and then the telescopic rod 35 moves along the Z-axis direction with the pushing head 23, and then drives the sliding member 32 and the holding member 33 to move along the Z-axis direction. At this time, the first elastic member 34 pushes the holding member 33 to abut the first inclined surface 3111 and then moves along the X-axis direction, thereby releasing the workpiece 200.

[0077] It can be understood that the locking assembly 40 can be provided with two groups and arranged in mirror symmetry. When clamping the workpiece 200, the locking members 42 in the two groups of locking assemblies 40 can cooperate to clamp the telescopic rod 35, thereby improving the stability of the locking assembly 40 when clamping the telescopic rod 35.

[0078] In order to further improve the stability when clamping the workpiece 200, multiple clamping devices 100 can be set to jointly clamp the workpiece 200, such as two, three, four, etc. The specific number and position can be set according to the structure of the workpiece 200, and multiple clamping devices 100 can share a support plate 10.

[0079] In the clamping device 100 provided by the embodiment of the present application, when the driving member 22 drives the sliding member 32 to move downward through the push head 23 and the telescopic rod 35, the pressing member 33 moves downward synchronously with the sliding member 32. At the same time, the pressing member 33 moves away from the wedge member 311 under the action of the first inclined surface 3111 of the wedge member 311, and can cooperate with the support plate 10 to clamp the workpiece 200. In addition, when the push head 23 moves downward, it pushes the pushing member 43 to move away from the push head 23, and the pushing member 43 drives the rotating member 41 to rotate, and the rotating member 41 drives the locking member 42 to press against the telescopic rod 35, thereby locking the telescopic rod 35. If the driving member 22 is de-energized when the pressing member 33 clamps the workpiece 200, causing the push head 23 to move upward, the telescopic rod 35 retracts at this time, but the locking member 42 still presses against the end of the telescopic rod 35 close to the sliding member 32, which can ensure that the sliding member 32 will not move upward to cause the pressing member 33 to release the workpiece 200, thereby improving the yield of the workpiece 200. When it is necessary to loosen the workpiece 200, the driving member 22 drives the push head 23 to move upward until the push head 23 pushes the locking member 42 to loosen the telescopic rod 35. The telescopic rod 35 can move upward, thereby driving the sliding member 32 and the holding member 33 to loosen the workpiece 200. At the same time, the first elastic member 34 pushes the holding member 33 to move toward the wedge member 311, so that the holding member 33 avoids the workpiece 200.

[0080] In some embodiments, see Figure 3 The locking member 42 is provided with a first protrusion 421 extending along the Y-axis direction, the pushing member 43 is provided with a second protrusion 431 extending along the Y-axis direction, the connecting member 21 is provided with a first slide groove 211 adapted to the first protrusion 421 and a second slide groove 212 adapted to the second protrusion 431, the first protrusion 421 cooperates with the first slide groove 211 to make the locking member 42 slidably connected to the connecting member 21 along the Y-axis direction and limit the locking member 42 in the Z-axis direction, the second protrusion 431 cooperates with the second slide groove 212 to make the pushing member 43 slidably connected to the connecting member 21 along the Y-axis direction and limit the pushing member 43 in the Z-axis direction. In this way, the locking piece 42 can be slidably connected to the connecting piece 21 through the cooperation between the first protrusion 421 and the first slide groove 211, and the pushing piece 43 can be slidably connected to the connecting piece 21 through the cooperation between the second protrusion 431 and the second slide groove 212, and the locking piece 42 can be limited in the Z-axis direction to prevent the locking piece 42 from moving along with the telescopic rod 35 in the Z-axis direction when clamping the telescopic rod 35, thereby improving the stability of the locking piece 42 clamping the telescopic rod 35.

[0081] In some embodiments, see Figure 3The side of the locking member 42 close to the telescopic rod 35 is provided with a second inclined surface 422 arranged toward the push head 23, and the side of the pushing member 43 close to the push head 23 is provided with a third inclined surface 432 arranged toward the push head 23. When the push head 23 moves along the Z-axis direction to abut the locking member 42, the push head 23 abuts the second inclined surface 422 and then pushes the locking member 42 away from the axis of the push head 23. When the push head 23 moves in the opposite direction of the Z-axis direction to abut the pushing member 43, the push head 23 abuts the third inclined surface 432 and then pushes the pushing member 43 away from the axis of the push head 23. In this way, when the push head 23 moves along the Z-axis direction to abut the locking member 42, the push head 23 abuts the second inclined surface 422, and then when the push head 23 continues to move along the Z-axis direction, the locking member 42 is pushed away from the telescopic member by abutting the second inclined surface 422, thereby releasing the telescopic rod 35. When the push head 23 moves in the opposite direction of the Z-axis and abuts against the pushing member 43, the push head 23 abuts against the third inclined surface 432, and then when the push head 23 continues to move in the opposite direction of the Z-axis, the pushing member 43 moves away from the push head 23 by abutting against the third inclined surface 432, thereby driving the rotating member 41 to rotate, and the rotating member 41 drives the locking member 42 to move toward the telescopic rod 35.

[0082] In some embodiments, see Figure 3 The end of the push head 23 close to the locking member 42 is provided with a fourth inclined surface 231 matched with the second inclined surface 422, and the end of the push head 23 close to the pushing member 43 is provided with a fifth inclined surface 232 matched with the third inclined surface 432. By providing the fourth inclined surface 231 and the fifth inclined surface 232 on the push head 23, it can be ensured that when the push head 23 moves along the Z-axis direction, it can contact the second inclined surface 422 to avoid the push head 23 and the locking member 42 from being stuck, and when the push head 23 moves in the opposite direction of the Z-axis direction, it can contact the third inclined surface 432 to avoid the push head 23 and the pushing member 43 from being stuck.

[0083] In some embodiments, see Figure 2 and Figure 3 The locking assembly 40 further includes a pin 44, which is connected to the connecting member 21 and extends along the X-axis direction. The rotating member 41 is an arc-shaped structure. The middle part of the rotating member 41 is rotatably connected to the connecting member 21 through the pin 44, and the two ends of the rotating member 41 are respectively arranged toward the connecting member 21 and the driving member 22. By providing the pin 44, the stability of the rotational connection between the rotating member 41 and the connecting member 21 can be improved. The rotating member 41 is arranged in an arc-shaped structure, which can reduce the movement stroke of the locking member 42 and the pushing member 43, and improve the efficiency of locking and unlocking.

[0084] In some embodiments, see Figure 3The rotating member 41 is provided with an arc-shaped hole 411, the center of which is located on the axis of the pin 44, and the connecting member 21 is provided with a positioning pin 213 inserted in the arc-shaped hole 411, and the positioning pin 213 cooperates with the arc-shaped hole 411 to limit the rotation angle of the rotating member 41. The arrangement of the arc-shaped hole 411 and the positioning pin 213 can further improve the rotation stability of the rotating member 41, and the positioning pin 213 cooperates with the arc-shaped hole 411 to limit the rotation angle of the rotating member 41, so as to prevent the rotating member 41 from excessively rotating, causing the locking member 42 or the pushing member 43 to move excessively, and causing the structure to be stuck.

[0085] In some embodiments, see Figure 2 and Figure 3 The driving assembly 20 further includes a connecting rod 24, the two ends of which are respectively connected to the driving member 22 and the push head 23, and the diameter of the connecting rod 24 is smaller than the diameter of the push head 23. By providing the connecting rod 24, the driving member 22 and the push head 23 can be connected, and the diameter of the connecting rod 24 is smaller than the diameter of the push head 23, so that the push head 23 cannot move due to the clamping of the connecting rod 24 when the pushing member 43 moves toward the axis of the push head 23.

[0086] In some embodiments, see Figure 2 , Figure 3 and Figure 4 The telescopic rod 35 includes an outer rod 351, an inner rod 352 and a second elastic member 353. The outer rod 351 is connected to the sliding member 32 and is arranged toward the push head 23. The inner rod 352 is connected to the push head 23 and is inserted into the outer rod 351 and can slide in the outer rod 351. The second elastic member 353 is sleeved on the outer side of the inner rod 352, and the two ends of the second elastic member 353 are respectively abutted against the outer rod 351 and the push head 23. The second elastic member 353 pushes the outer rod 351 away from the push head 23. The outer rod 351 can be a tubular structure, the inner rod 352 can be a columnar structure, and the second elastic member 353 can be a spring. It can be understood that the inner rod 352 is inserted into the outer rod 351. In order to ensure that the inner rod 352 does not separate from the outer rod 351 when moving in the opposite direction of the Z-axis direction, corresponding protrusions can be provided on the inner side of the outer rod 351 and the outer side of the inner rod 352 to limit the inner rod 352. When the driving member 22 drives the connecting rod 24 and the pushing head 23 to move in the opposite direction of the Z axis, the pushing head 23 drives the inner rod 352 to move, and the inner rod 352 pulls the outer rod 351 to move, thereby driving the sliding member 32 to move in the opposite direction of the Z axis until the locking member 42 clamps the outer rod 351. When the driving member 22 drives the connecting rod 24 and the pushing head 23 to move in the Z axis direction, the pushing head 23 drives the inner rod 352 to move in the Z axis direction, and at this time, the pushing head 23 compresses the second elastic member 353 until the pushing head 23 pushes against the locking member 42 to release the outer rod 351, and the outer rod 351 moves in the Z axis direction under the action of the second elastic member 353.

[0087] In some embodiments, see Figure 4 The two limiting members 312 are both provided with a third slide groove 3121 arranged along the Z-axis direction on the side where the two limiting members 312 are close to each other, and the sliding member 32 is provided with a third protrusion 321 respectively matched with the two third slide grooves 3121, and the third protrusion 321 cooperates with the third slide groove 3121 to limit the limiting member 312. In this way, the sliding member 32 and the two limiting members 312 can be slidably connected, and the movement direction of the sliding member 32 can be limited.

[0088] In some embodiments, see Figure 4 The sliding member 32 is provided with a receiving groove 322 and a fourth sliding groove 323 extending along the X-axis direction, the holding member 33 is provided with a fourth protrusion 331 and abutting portion 332, the fourth protrusion 331 is provided in the fourth sliding groove 323 to make the holding member 33 and the sliding member 32 slidably connected, and the first elastic member 34 is provided in the receiving groove 322 and its two ends are respectively abutted against the groove wall of the receiving groove 322 and the abutting portion 332. By providing the receiving groove 322, the first elastic member 34 can be accommodated. By providing the fourth sliding groove 323 and the fourth protrusion 331, the holding member 33 and the sliding member 32 can be slidably connected and the movement direction of the holding member 33 can be limited.

[0089] The working process of the clamping device 100 provided in the embodiment of the present application is roughly as follows:

[0090] First, see Figure 1 and Figure 5 , place the workpiece 200 on the support plate 10 and correspond to the base 31. Then, please refer to the driving member 22 driving the connecting rod 24, the push head 23 and the telescopic rod 35 to move in the opposite direction of the Z-axis direction, the telescopic rod 35 pulls the sliding member 32 to move in the opposite direction of the Z-axis direction, and the sliding member 32 drives the holding member 33 to move in the opposite direction of the Z-axis direction. At the same time, the holding member 33 moves in the opposite direction of the X-axis direction under the action of the first inclined surface 3111 of the wedge-shaped member 311, so that the holding member 33 cooperates with the support plate 10 to clamp the workpiece 200, please refer to Figure 6 and Figure 7 , thus completing the clamping of the workpiece 200.

[0091] When the push head 23 moves in the opposite direction along the Z axis, the push head 23 pushes the pushing member 43 to move away from the axis of the push head 23, and the pushing member 43 then drives the rotating member 41 to rotate around the pin shaft 44, and then drives the locking member 42 to move toward the outer rod 351 of the telescopic rod 35. When the pressing member 33 presses the workpiece 200, the locking member 42 clamps the outer rod 351 to complete the locking and improve the clamping effect.

[0092] If the driving member 22 loses power at this time, such as when the cylinder is cut off, the push head 23 will move along the Z-axis direction, thereby compressing the second elastic member 353. However, at this time, the force of the locking member 42 clamping the outer rod 351 is greater than the force of the push head 23 on the second elastic member 353 when there is no external power. The push head 23 will not abut the locking member 42, and the locking member 42 will still clamp the outer rod 351, thereby keeping the holding member 33 to continue clamping the workpiece 200, and the workpiece 200 will not be released due to the loss of power of the driving member 22.

[0093] When the workpiece 200 needs to be released, the driving member 22 drives the connecting rod 24, the pushing head 23 and the inner rod 352 of the telescopic rod 35 to move in the Z-axis direction. At this time, the inner rod 352 slides in the outer rod 351, and the pushing head 23 compresses the second elastic member 353, and the outer rod 351 remains stationary until the pushing head 23 abuts against the locking member 42 and pushes the locking member 42 to release the outer rod 351. The outer rod 351 moves in the Z-axis direction under the action of the second elastic member 353, thereby driving the sliding member 32 and the holding member 33 to move in the Z-axis direction. When the holding member 33 moves in the Z-axis direction, the first elastic member 34 pushes the holding member 33 toward the wedge member 311, gradually moving the holding member 33 away from the workpiece 200, thereby causing the holding member 33 to release the workpiece 200.

[0094] It is obvious to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present application.

[0095] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application and are not intended to limit it. Although the present application has been described in detail with reference to the preferred embodiments, a person of ordinary skill in the art should understand that the technical solution of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present application.

Claims

1. A clamping device, characterized in that: include: Support plate; A driving assembly, comprising a connecting member connected to the support plate, a driving member connected to an end of the connecting member away from the support plate, and a pusher head connected to the driving member, wherein the driving member drives the pusher head to move in a first direction; The clamping assembly comprises a base, a sliding member, a pressing member, a first elastic member and a telescopic rod, the base being connected to a side of the support plate away from the connecting member, the side of the base away from the support plate being provided with a wedge and two limit members symmetrically arranged in a second direction perpendicular to the first direction, the wedge and the two limit members being arranged at intervals along the second direction, the wedge being provided with a first inclined surface gradually away from the two limit members along the first direction, the sliding member being arranged between the two limit members and being slidably connected to the two limit members along the first direction, the pressing member being slidably connected to the sliding member along the second direction, the first elastic member being arranged along the second direction and its two ends being respectively connected to the sliding member and the pressing member, the first elastic member pushing the pressing member to abut against the first inclined surface, the telescopic rod being movably inserted between the support plate and the base, and the two ends of the telescopic rod being respectively connected to the sliding member and the pushing head; and The locking assembly comprises a rotating member rotatably connected to the interior of the connecting member, a locking member rotatably connected to one end of the rotating member close to the support plate, and a pushing member rotatably connected to one end of the rotating member away from the support plate; wherein, The driving member drives the sliding member to move downward through the pushing head and the telescopic rod, and then drives the holding member to move downward. While the holding member moves downward, it moves in a direction away from the wedge member under the push of the first inclined surface, and then cooperates with the support plate to clamp the workpiece. When the pushing head moves downward, it pushes the pushing member to move away from the pushing head, and then drives the rotating member to rotate. The rotating member drives the locking member to move toward the telescopic rod and then resists the telescopic rod.

2. The clamping device according to claim 1, characterized in that: The locking member is provided with a first protrusion extending along a third direction, the pushing member is provided with a second protrusion extending along the third direction, the connecting member is provided with a first sliding groove adapted to the first protrusion and a second sliding groove adapted to the second protrusion, the first protrusion cooperates with the first sliding groove so that the locking member is slidably connected to the connecting member along the third direction and the locking member is limited in the first direction, and the second protrusion cooperates with the second sliding groove so that the pushing member is slidably connected to the connecting member along the third direction and the pushing member is limited in the first direction; wherein The first direction, the second direction and the third direction are perpendicular to each other.

3. The clamping device according to claim 1, characterized in that: A second inclined surface arranged toward the pushing head is provided on a side of the locking piece close to the telescopic rod, and a third inclined surface arranged toward the pushing head is provided on a side of the pushing piece close to the pushing head. When the pushing head moves along the first direction and abuts against the locking piece, the pushing head abuts against the second inclined surface and thereby pushes the locking piece to move away from the axis of the pushing head. When the pushing head moves in the opposite direction of the first direction and abuts against the pushing piece, the pushing head abuts against the third inclined surface and thereby pushes the pushing piece to move away from the axis of the pushing head.

4. The clamping device according to claim 3, characterized in that: One end of the push head close to the locking member is provided with a fourth inclined surface matched with the second inclined surface, and one end of the push head close to the pushing member is provided with a fifth inclined surface matched with the third inclined surface.

5. The clamping device according to claim 1, characterized in that: The locking assembly also includes a pin shaft, which is connected to the connecting member and extends along the second direction. The rotating member is an arc-shaped structure. The middle part of the rotating member is rotatably connected to the connecting member through the pin shaft, and the two ends of the rotating member are respectively arranged toward the connecting member and the driving member.

6. The clamping device according to claim 5, characterized in that: The rotating member is provided with an arc-shaped hole, the center of which is located on the axis of the pin shaft, and the connecting member is provided with a positioning pin inserted in the arc-shaped hole, and the positioning pin cooperates with the arc-shaped hole to limit the rotation angle of the rotating member.

7. The clamping device according to claim 1, characterized in that: The driving assembly further comprises a connecting rod, two ends of which are respectively connected to the driving member and the pushing head, and the diameter of the connecting rod is smaller than the diameter of the pushing head.

8. The clamping device according to claim 1, characterized in that: The telescopic rod includes an outer rod, an inner rod and a second elastic member, the outer rod is connected to the sliding member and is arranged toward the pushing head, the inner rod is connected to the pushing head and is inserted into the outer rod and can slide in the outer rod, the second elastic member is sleeved on the outside of the inner rod, and the two ends of the second elastic member are respectively abutted against the outer rod and the pushing head, and the second elastic member pushes the outer rod to move away from the pushing head.

9. The clamping device according to claim 1, characterized in that: A third slide groove arranged along the first direction is provided on the side where the two limiting members are close to each other, and a third protrusion respectively matched with the two third slide grooves is provided on the sliding member, and the third protrusion cooperates with the third slide groove to limit the limiting member.

10. The clamping device according to claim 1, characterized in that: The sliding member is provided with a receiving groove and a fourth sliding groove extending along the second direction, the holding member is provided with a fourth protrusion and a supporting portion, the fourth protrusion is arranged in the fourth sliding groove to make the holding member and the sliding member slidably connected, the first elastic member is arranged in the receiving groove and its two ends are respectively abutted against the groove wall of the receiving groove and the supporting portion.

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