Clamping device

Abstract

The present application proposes a clamping device, comprising a bearing assembly for bearing a workpiece; a clamping assembly, comprising at least two clamping members and an elastic member, wherein the at least two clamping members are relatively arranged on the bearing assembly, and an elastic member is respectively connected to the at least two clamping members to drive the at least two clamping members to move closer to or away from each other; a driving assembly, which is arranged on the clamping assembly and connected to the elastic member to cause the elastic member to deform from an initial state to a deformed state or to return from a deformed state to an initial state to clamp or release the workpiece. The above-mentioned clamping device drives the elastic member from the initial state to the deformed state by the driving assembly so that the at least two clamping members move closer to each other and clamp the workpiece, and drives the elastic member from the deformed state to the initial state by the driving assembly so that the at least two clamping members move away from each other and release the workpiece. The clamping device is applicable to workpieces with irregular shapes, and the workpiece support and positioning process is simple to operate. The structure of the clamping device is simple, and the manpower and material costs consumed are low.

Description

Technical Field

[0001] The present application relates to the field of mechanical processing technology, and in particular to a clamping device. Background Art

[0002] Fixtures are devices used to fix the processing object in the mechanical manufacturing process to accept construction or inspection. They are also indispensable components of mechanical processing. Driven by the development of machine tool technology towards high speed, high efficiency, precision, composite, intelligent and environmentally friendly directions, fixture technology is developing towards high precision, high efficiency, modularity, combination, universality and economy.

[0003] Although there are many fixtures for positioning workpieces on the market, most of them have complex structures and consume high manpower and material costs. Especially for irregularly shaped workpieces, the workpiece support and positioning process is cumbersome and the workpiece cannot be clamped and limited conveniently, resulting in low efficiency. Summary of the Invention

[0004] In view of the above, it is necessary to provide a clamping device to solve the technical problems of the existing complex fixture structure and the cumbersome operation of the workpiece support and positioning process.

[0005] One embodiment of the present application provides a clamping device, including a carrying assembly for carrying a workpiece, the clamping device including: a clamping assembly, including at least two clamping members and an elastic member, at least two of the clamping members are relatively arranged on the carrying assembly, and one elastic member is respectively connected to at least two of the clamping members to drive at least two of the clamping members to move closer to or away from each other, thereby clamping or releasing the workpiece; a driving assembly, provided on the clamping assembly and connected to the elastic member, for driving the elastic member to move so that the elastic member is deformed from an initial state to a deformed state or reset from the deformed state to the initial state, thereby making at least two of the clamping members move closer to or away from each other.

[0006] The above-mentioned clamping device drives the elastic member from the initial state to the deformed state through the driving component so that at least two clamping members are close to each other and clamp the workpiece, and drives the elastic member from the deformed state to the initial state through the driving component so that at least two clamping members are away from each other and release the workpiece. It can be used for workpieces with irregular shapes, the workpiece support and positioning process is simple to operate, and the structure of the clamping device is simple, and the manpower and material costs consumed are low.

[0007] In some embodiments, the supporting assembly includes: a base plate; a support plate fixedly connected to one side of the base plate; a plurality of supporting parts, one end of each of the supporting parts is connected to the support plate and the base plate, and the other end of each of the supporting parts extends out of the side of the support plate away from the base plate, and a plurality of the supporting parts extend out of one end of the support plate to form a supporting surface for supporting the workpiece; wherein, at least two of the clamping members are arranged on opposite sides of the support plate, and are spaced apart above the base plate; wherein, the elastic member is arranged between the support plate and the base plate, and is spaced apart from the base plate.

[0008] In some embodiments, the driving assembly includes: an upper cover connected to the bottom plate; a lower cover connected to the upper cover, and a cavity is formed between the lower cover and the upper cover; a moving member is arranged in the cavity and moves in a moving direction perpendicular to the clamping member, one end of the moving member passes through the upper cover and the bottom plate and is fixedly connected to the elastic member, and the other end of the moving member passes through the lower cover. By moving the moving member away from the bottom plate or toward the bottom plate, the elastic member can be driven from an initial state to a deformed state or from the deformed state to the initial state.

[0009] In some embodiments, the movable member includes: a body disposed in the cavity, with an outer side wall of the body abutting against a cavity wall of the cavity to divide the cavity into a first space close to the bottom plate and a second space away from the bottom plate; a traction portion, one end of which is connected to one side of the body, and the other end of which passes through the upper cover and the bottom plate and is fixedly connected to the elastic member; a floating portion, one end of which is connected to a side of the body away from the traction portion, and the other end of which passes through the lower cover, the floating portion having a groove formed at one end away from the body, and at least one communicating hole formed on a side of the floating portion, the communicating holes respectively connecting the groove and the second space; the clamping device further includes: an air pipe joint fixedly disposed on the lower cover and connected to the groove of the floating portion, wherein air is ventilated to the air pipe joint to allow gas to enter the groove and enter the second space, thereby pushing the movable member to drive the elastic member to return from the deformed state to the initial state; and vacuuming air from the air pipe joint to generate a negative pressure in the second space, thereby causing the movable member to move downward and drive the elastic member to deform from the initial state to the deformed state.

[0010] In some embodiments, the drive assembly further includes: a compression member disposed in the cavity, one end of the compression member abutting the body, and the other end of the compression member abutting the upper cover, so that the elastic member is reset from the deformed state to the initial state.

[0011] In some embodiments, avoidance holes are respectively provided on the elastic member at positions corresponding to the plurality of support portions, and each support portion is passed through the corresponding avoidance hole.

[0012] In some embodiments, the clamping device further includes: at least two receiving members, each fixedly connected to the base plate and located on opposite sides of the support plate to receive the at least two clamping members respectively.

[0013] In some embodiments, each of the supporting members has a protruding member protruding upward, and the elastic member is disposed above the receiving member and located between the protruding members on at least two of the receiving members.

[0014] In some embodiments, each of the clamping members includes: a movable plate connected to the elastic member; and a clamping plate vertically connected to the movable plate to cooperate with the clamping plate of the opposite clamping member to clamp the workpiece.

[0015] In some embodiments, teeth are provided on the sides of the clamping plates of the two clamping members arranged opposite to each other, so as to further clamp the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the clamping device proposed in one embodiment of the present application.

[0017] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure of the clamping device along the AA direction when it is in the deformed state.

[0018] Figure 3 yes Figure 1 Schematic diagram of the cross-sectional structure of the clamping device along the AA direction in the initial state.

[0019] Figure 4 yes Figure 1 Schematic diagram of the exploded structure of the clamping device.

[0020] Figure 5 yes Figure 4 A partial enlarged view of the clamping device at position V.

[0021] Figure 6 yes Figure 4 Schematic diagram of the cross-sectional structure of the driving component of the clamping device along the BB direction.

[0022] Figure 7 yes Figure 4 Schematic diagram of the exploded structure of the drive component in the clamping device.

[0023] Figure 8 yes Figure 7Schematic diagram of the three-dimensional structure of the moving parts of the driving assembly in the clamping device.

[0024] Figure 9 yes Figure 3 A partial enlarged view of the clamping device at position IX.

[0025] Figure 10 yes Figure 2 A partial enlarged view of the clamping device at position X.

[0026] Description of main component symbols

[0027]

[0028] DETAILED DESCRIPTION

[0029] 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 should not be understood as limiting the present application.

[0030] 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" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying 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 cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0031] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or mutual communication; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0032] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0033] One embodiment of the present application provides a clamping device, comprising: a carrying assembly for carrying a workpiece; a clamping assembly, comprising at least two clamping members and an elastic member, at least two clamping members being relatively arranged on the carrying assembly, an elastic member being respectively connected to at least two clamping members to drive at least two clamping members to move closer to or away from each other, thereby clamping or releasing the workpiece; a driving assembly, disposed on the clamping assembly and connected to the elastic member, for driving the elastic member to move so that the elastic member moves from an initial state to a deformed state or from a deformed state to an initial state, thereby moving at least two clamping members closer to or away from each other.

[0034] The above-mentioned clamping device drives the elastic member from the initial state to the deformed state through the driving component so that at least two clamping members are close to each other and clamp the workpiece, and drives the elastic member from the deformed state to the initial state through the driving component so that at least two clamping members are away from each other and release the workpiece. It can be used for workpieces with irregular shapes, the workpiece support and positioning process is simple to operate, and the structure of the clamping device is simple, and the manpower and material costs consumed are low.

[0035] The following describes in detail the various embodiments of the present invention in conjunction with the accompanying drawings.

[0036] During the production process, there are often some workpieces with poor flatness and irregular shapes. The workpieces need to be clamped by a clamping device first, and then processed, such as turning and milling with a lathe. However, the existing clamping device is difficult to design and the processing technology of the clamping device is complicated, which consumes high manpower and material costs. In order to solve the above technical problems, please refer to Figure 1 , Figure 1 The figure is a schematic diagram of the three-dimensional structure of a clamping device 100 according to one embodiment of the present application. The clamping device 100 is used to clamp a workpiece (not shown) so that a processing device can process the clamped workpiece. In this embodiment, the workpiece is a laptop case. It is understood that in other embodiments, the workpiece can also be other structures, such as a mobile phone case, but is not limited to these. Specifically, the clamping device 100 includes a carrier assembly 10, a clamping assembly 20, and a drive assembly 30.

[0037] The carrier assembly 10 is used to carry a workpiece. The clamping assembly 20 includes at least two clamping members 22 and an elastic member 24. The at least two clamping members 22 are arranged on the carrier assembly 10 relative to each other. The elastic member 24 is respectively connected to the at least two clamping members 22 to drive the at least two clamping members 22 to move closer to or farther from each other, thereby clamping or releasing the workpiece. The driving assembly 30 is arranged on the clamping assembly 20 and connected to the elastic member 24. It is used to drive the elastic member 24 to move so that the elastic member 24 deforms from an initial state to a deformed state or returns from a deformed state to an initial state, thereby moving the at least two clamping members 22 closer to or farther from each other and clamping or releasing the workpiece. Please also refer to Figure 2 and Figure 3 , Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure of the clamping device 100 along the AA direction when in a deformed state. Figure 3 yes Figure 1 A schematic diagram of the cross-sectional structure of the clamping device 100 in the initial state along the AA direction. Figure 3 In the embodiment, the clamping device 100 is in an initial state, where the distance between at least two clamping members 22 is maximized so that the operator can place the workpiece between at least two clamping members 22; Figure 2 In the embodiment, the clamping device 100 is in a deformed state, and at least two clamping members 22 clamp the workpiece so that the processing device can process the clamped workpiece.

[0038] The clamping device 100 drives the elastic member 24 from the Figure 3 The initial state in the deformation to Figure 2 The deformation state in the middle causes at least two clamping members 22 to approach each other and clamp the workpiece, and the elastic member 24 is driven by the driving assembly 30 to move from Figure 2 The deformation state in is reset to Figure 3The initial state in the clamping device 100 allows at least two clamping members 22 to move away from each other and release the workpiece, which can be applied to workpieces with irregular shapes. The support and positioning process of the workpiece is simple to operate, and the structure of the clamping device 100 is simple, and the manpower and material costs consumed are low.

[0039] See Figure 4 , Figure 4 yes Figure 1 The supporting assembly 10 includes a bottom plate 12, a support plate 14 and a plurality of support portions 16.

[0040] The base plate 12 is generally rectangular in shape. The support plate 14 is also rectangular and fixedly connected to the upper center portion of the base plate 12. The support plate 14 is smaller than the base plate 12, so that each side of the support plate 14 is spaced apart from the corresponding side of the base plate 12. At least two clamping members 22 are provided on opposite sides of the support plate 14, spaced apart above the base plate 12. In other words, each clamping member 22 is located at the gap between a corresponding side of the support plate 14 and a corresponding side of the base plate 12.

[0041] There are six support portions 16, all of which are columnar structures. One end of each support portion 16 passes through the support plate 14 and the base plate 12 to securely connect the two plates. The support plate 14 and the base plate 12 are arranged parallel to each other with a certain distance therebetween. The elastic member 24 is disposed between the support plate 14 and the base plate 12 with a distance therebetween. The other end of each support portion 16 extends out of the side of the support plate 14 facing away from the base plate 12. The multiple support portions 16 extend out of one end of the support plate 14 to form a support surface (not shown). The support surface is used to support a workpiece, thereby accommodating workpieces with poor flatness.

[0042] It is understandable that in other embodiments, the number of support portions 16 may be other numbers, such as ten or twelve, as long as the plurality of support portions 16 extending out of one end of the support plate 14 can form a support surface for supporting the workpiece.

[0043] There are four clamping members 22, and two of them are arranged opposite each other, and the four clamping members 22 are arranged in a rectangular shape. It is understood that in other embodiments, there can also be two clamping members 22. Each clamping member 22 includes a moving plate 222 and a clamping plate 224.

[0044] The movable plate 222 is plate-shaped and connected to the elastic member 24. The clamping plate 224 is perpendicularly connected to the side of the movable plate 222 facing away from the elastic member 24, and cooperates with the clamping plate 224 of the opposing clamping member 22 to clamp the workpiece. The clamping plates 224, disposed on opposite sides of the support plate 14, are equidistant from the support plate 14. This allows the clamping plates 224 to push against the workpiece and clamp it in the middle of the support plate 14.

[0045] The clamping plates 224 of the two opposing clamping members 22 are provided with toothed portions 2242 , such as a plurality of horizontal bars, on one side thereof close to each other. This allows the clamped workpiece to be locked, ensuring that the clamped workpiece is more secure.

[0046] It is understandable that in other embodiments, the clamping plate 224 may not be vertically connected to the movable plate 222. For example, the angle between the clamping plate 224 and the movable plate 222 is 60 degrees, but it is not limited thereto and can be set according to actual needs.

[0047] Among them, the movable plates 222 of the two adjacent clamping members 22 are respectively provided with corresponding inclined portions 2222 on the side close to each other, wherein the inclined portions 2222 are inclined surfaces, so that the shape of each movable plate 222 is an isosceles trapezoidal shape, which can keep the ends of the movable plates 222 away from the air, so as to avoid interference between the ends of the two adjacent movable plates 222 during the process of clamping the workpiece, resulting in the problem of being unable to clamp the workpiece.

[0048] The elastic member 24 is in the form of a thin plate, such as a 5 mm thick elastic steel sheet. Six escape holes 241 are provided on the elastic member 24 at positions corresponding to the multiple support portions 16. Each support portion 16 is inserted into a corresponding escape hole 241 to prevent friction between the walls of the escape holes 241 of the elastic member 24 and the support portion 16 during deformation from an initial state to a deformed state or from a deformed state back to the initial state.

[0049] Please also see Figure 5 , Figure 5 yes Figure 4 The clamping device 100 is a partially enlarged view at position V. The clamping device 100 further includes four strip-shaped receiving members 40, which are fixedly connected to the four edges of the upper surface of the base plate 12 by bolts. The four receiving members 40 are located on opposite sides of the support plate 14 in pairs to receive the four clamping members 22 respectively.

[0050] Each receiving member 40 has a protruding member 50 protruding upward. The protruding member 50 is strip-shaped and is located at the edge of the receiving member 40. At this time, the cross-section of the structure formed by the receiving member 40 and the protruding member 50 is L-shaped. The elastic member 24 is provided above the receiving member 40 and is located between the protruding members 50 on the four receiving members 40. The protruding member 50 can limit the position of the elastic member 24.

[0051] The receiving member 40 and the protruding member 50 are an integral structure. It is understood that in other embodiments, the receiving member 40 and the protruding member 50 may be separate structures.

[0052] Please continue to see Figure 4The clamping device 100 also includes four connecting members 60, which are strip-shaped and are used to connect the elastic member 24 and the four movable plates 222. The four edges of the elastic member 24 are each provided with a plurality of semicircular notches 242. During connection, bolts can be first inserted through the notches 242 on the elastic member 24, then through the connecting members 60, and finally into the movable plates 222, thereby securing the elastic member 24 and the movable plates 222 together. This solves the problem of low precision of the circular holes machined in the thin elastic member 24, which is caused by the thin thickness of the elastic member 24.

[0053] Please also see Figure 4 、 Figure 6 and Figure 7 , Figure 6 yes Figure 4 A schematic cross-sectional view of the driving assembly 30 of the clamping device 100 along the BB direction, Figure 7 yes Figure 4 Schematic diagram of the exploded structure of the driving assembly 30 in the clamping device 100. The driving assembly 30 includes an upper cover 31, a lower cover 32 and a moving member 33. The upper cover 31 is disc-shaped and is connected to the side of the bottom plate 12 away from the support plate 14 through a positioning pin; the lower cover 32 is disc-shaped and has the same radius as the upper cover 31. The lower cover 32 is connected to the side of the upper cover 31 away from the bottom plate 12 through a positioning pin, and a cavity 34 is formed between the lower cover 32 and the upper cover 31; the moving member 33 is arranged in the cavity 34 and moves along a direction perpendicular to the movement of the clamping member 22. The movable member 33 moves in the axial direction, that is, in the axial direction of the upper cover 31 and the lower cover 32, one end of the movable member 33 passes through the upper cover 31 and the bottom plate 12 and is fixedly connected to the elastic member 24, and the other end of the movable member 33 passes through the lower cover 32. By moving the movable member 33 away from the bottom plate 12 or toward the bottom plate 12, the elastic member 24 can be driven to deform from the initial state to the deformed state or to return from the deformed state to the initial state, so that at least two clamping members 22 are moved closer to or away from each other, and clamp or release the workpiece.

[0054] The movable member 33 includes a body 331, a traction portion 332 and a floating portion 333. The body 331 is disc-shaped, and the cavity 34 is also disc-shaped. The length of the cavity 34 along its axial direction is greater than the length of the body 331 along its axial direction, that is, the body 331 can move in the cavity 34. The body 331 is arranged in the cavity 34, and the outer wall of the body 331 abuts against the cavity wall of the cavity 34 to divide the cavity 34 into a first space 341 close to the bottom plate 12 and a second space 342 away from the bottom plate 12, wherein the outer diameter of the body 331 is the same as the inner diameter of the cavity 34. In this way, the first space 341 and the second space 342 are both Sealed space; one end of the traction part 332 is connected to one side of the main body 331, and the other end of the traction part 332 passes through the upper cover 31 and the bottom plate 12 and is fixedly connected to the elastic member 24; the floating part 333 is a columnar structure, one end of the floating part 333 is connected to the side of the main body 331 away from the traction part 332, and the other end of the floating part 333 passes through the lower cover 32, and a groove 3331 is provided at the end of the floating part 333 away from the main body 331, and the groove 3331 is a columnar groove. At least one connecting hole 3332 is provided on the side of the floating part 333, for example, three connecting holes 3332 respectively connect the groove 3331 and the second space 342. The clamping device 100 also includes an air pipe joint 70 connected to an external air source. The air pipe joint 70 is fixedly arranged on the side of the lower cover 32 facing away from the upper cover 31 and is connected to the groove 3331 of the floating part 333. Therefore, the air pipe joint 70 is also connected to the second space 342. Ventilation to the air pipe joint 70 through an external air source can allow gas to enter the groove 3331 and then into the second space 342, thereby pushing the main body 331 and the traction part 332 of the movable member 33 upward and driving the elastic member 24 to return from the deformed state to the initial state to release the workpiece; by pumping air into the air pipe joint 70, a negative pressure can be generated in the groove 3331 and the second space 342, thereby causing the movable member 33 to move downward under the action of its own gravity and the push of the gas in the first space 341, and driving the elastic member 24 to deform from the initial state to the deformed state to clamp the workpiece.

[0055] Among them, the traction part 332 includes a cylinder 3321 and a screw 3322, the outer diameter of the cylinder 3321 is the same as the outer diameter of the floating part 333, one end of the cylinder 3321 is connected to the main body 331, and the other end of the cylinder 3321 can be slidably extended into the base plate 12; the screw head of the screw 3322 is clamped on the side of the support plate 14 away from the base plate 12, and the other end of the screw 3322 slides into the support plate 14 and the base plate 12 in turn and is fixedly connected to the cylinder 3321, wherein the screw 3322 can move relative to the upper cover 31 or the lower cover 32, and the screw 3322 is fixedly connected to the elastic member 24 to drive the elastic member 24 to deform when sliding.

[0056] The cylindrical body 3321, the main body 331 and the floating portion 333 are an integral structure. It is understood that in other embodiments, the cylindrical body 3321, the main body 331 and the floating portion 333 are separate structures.

[0057] Please also refer to Figure 8 , Figure 8 yes Figure 7 A schematic diagram of the three-dimensional structure of the movable member 33 of the drive assembly 30 in the clamping device 100 is shown. A sealing ring 35 is provided on the outer periphery of the floating portion 333. A sealing groove 321 is defined on the side of the lower cover 32 adjacent to the upper cover 31. The sealing groove 321 is positioned to correspond to the position of the sealing ring 35. The axial length of the sealing groove 321 is greater than the axial length of the sealing ring 35. The communicating hole 3332 is located between the sealing ring 35 and the body 331. This ensures the movement of the floating portion 333 and the sealing of the second space 342 during movement.

[0058] The drive assembly 30 further includes a plurality of compression members 36 disposed within the first space 341 of the cavity 34. A plurality of receiving grooves 3311 are defined on the side of the body 331 facing away from the floating portion 333. These grooves 3311 correspond to the positions of the compression members 36. One end of each compression member 36 abuts the bottom of the groove 3311 in the body 331, while the other end abuts the upper cover 31, thereby restoring the elastic member 24 from its deformed state to its initial state. In this embodiment, the compression members 36 are springs or elastic rubber.

[0059] The implementation process of the above-mentioned clamping device 100 is as follows:

[0060] First, see Figure 3 and Figure 9 , Figure 9 yes Figure 3 A partial enlarged view of the clamping device at position IX. The elastic member 24 is in the initial state, the elastic member 24 is horizontal, the lower end of the screw head of the screw 3322 of the traction portion 332 is at a certain distance from the upper surface of the support plate 14, the upper surface of the body 331 is in close contact with the upper wall of the cavity 34, the lower surface of the body 331 is at a certain distance from the lower wall of the cavity 34, the upper surface of the sealing ring 35 is flush with the notch of the sealing groove 321, and the lower surface of the sealing ring 35 is at a certain distance from the bottom of the sealing groove 321. At this time, the distance between the clamping plates 224 of the two relatively arranged clamping members 22 is the maximum. The workpiece is placed on the support surface formed by one end of the multiple support portions 16 of the support assembly 10 extending out of the support plate 14. The support surface carries the workpiece to adapt to workpieces with poor flatness.

[0061] Next, by pumping air into the tracheal connector 70, negative pressure is generated in the second space 342 and the groove 3331, so that the moving member 33 moves downward under the action of its own gravity and the push of the gas in the first space 341 on the moving member 33, thereby driving the elastic member 24 to deform from the initial state to the deformed state, that is, Figure 2 and Figure 10 The state in Figure 10 yes Figure 2 A partial enlarged view of the clamping device at X in FIG. The relatively arranged clamping members 22 are brought closer to each other to push the workpiece to the middle of the support plate 14 and clamp the workpiece. At this time, the elastic member 24 is bent downward, and the lower end of the screw head of the screw 3322 of the traction portion 332 is in contact with the upper surface of the support plate 14. The upper surface of the body 331 is at a certain distance from the upper wall of the cavity 34, and the lower surface of the body 331 is in close contact with the lower wall of the cavity 34. The upper surface of the sealing ring 35 is at a certain distance from the notch of the sealing groove 321, and the lower surface of the sealing ring 35 is in close contact with the bottom of the sealing groove 321.

[0062] Finally, after the clamped workpiece is processed, the air is ventilated to the air pipe connector 70 through an external air source so that the air can enter the groove 3331 and enter the second space 342, thereby pushing the main body 331 and the traction part 332 of the moving part 33 and driving the elastic part 24 to return from the deformed state to the original state. Figure 9 In the initial state, that is, the elastic member 24 is reset to a horizontal state, the lower end of the screw head of the screw 3322 of the traction portion 332 is at a certain distance from the upper surface of the support plate 14, the upper surface of the body 331 is in close contact with the upper wall of the cavity 34, the lower surface of the body 331 is at a certain distance from the lower wall of the cavity 34, the upper surface of the sealing ring 35 is flush with the notch of the sealing groove 321, and the lower surface of the sealing ring 35 is at a certain distance from the bottom of the sealing groove 321. The relatively arranged clamping members 22 are moved away from each other to the maximum distance to loosen the processed workpiece, thereby removing the processed workpiece.

[0063] The clamping device 100 of the present application is easy to operate and has strong applicability. It can be used to clamp workpieces with poor flatness and irregular shapes; the deformation of the elastic member 24 is used to enable the clamping member to clamp the workpiece, so that the workpiece can be clamped in the center; the two relatively arranged clamping members 22 are close to each other on one side and use a toothed portion 2242, such as a plurality of horizontal bars, to make the workpiece bite after fitting together, ensuring that the workpiece is more secure; the degree of automation is high, and no manual auxiliary clamping is required.

[0064] It will be apparent 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, the embodiments should be considered exemplary and non-restrictive from any point of view, 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 that fall within the meaning and scope of the equivalents of the claims be included in the present application. Any reference numerals in the claims should not be construed as limiting the claims to which they relate. Furthermore, it is apparent that the word "comprising" does not exclude other units or steps, and the singular does not exclude the plural.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A clamping device comprising a bearing assembly for bearing a workpiece, characterized in that: The clamping device comprises: A clamping assembly comprising at least two clamping members and an elastic member, wherein the at least two clamping members are disposed opposite to each other on the bearing assembly, and the elastic member is connected to the at least two clamping members respectively to drive the at least two clamping members to move closer to or away from each other; a driving assembly, provided on the clamping assembly and connected to the elastic member, for driving the elastic member to deform from an initial state to a deformed state or to return from the deformed state to the initial state, thereby causing at least two of the clamping members to move closer to or farther from each other to clamp or release the workpiece; The bearing assembly includes: base plate; A support plate, fixedly connected to one side of the base plate; A plurality of support portions, one end of each of the support portions being connected to the support plate and the base plate, the other end of each of the support portions extending out of a side of the support plate away from the base plate, and the plurality of support portions extending out of one end of the support plate forming a support surface for supporting the workpiece; Wherein, at least two of the clamping members are provided on opposite sides of the support plate and are spaced apart and located above the bottom plate; Wherein, the elastic member is provided between the support plate and the bottom plate, and there is a gap between the elastic member and the bottom plate; The elastic member is provided with avoidance holes at positions corresponding to the plurality of support portions, and each support portion is passed through the corresponding avoidance hole.

2. The clamping device according to claim 1, characterized in that The drive assembly includes: an upper cover connected to the bottom plate; A lower cover is connected to the upper cover, and a cavity is formed between the lower cover and the upper cover; A moving member is provided in the cavity and moves in a moving direction perpendicular to the moving direction of the clamping member. One end of the moving member passes through the upper cover and the bottom plate and is fixedly connected to the elastic member. The other end of the moving member passes through the lower cover. By moving the moving member away from the bottom plate or toward the bottom plate, the elastic member can be driven to deform from an initial state to a deformed state or to return from the deformed state to the initial state.

3. The clamping device according to claim 2, characterized in that The moving part includes: a body disposed in the cavity, wherein an outer side wall of the body abuts against a cavity wall of the cavity to divide the cavity into a first space close to the bottom plate and a second space away from the bottom plate; a traction portion, one end of which is connected to one side of the body, and the other end of which passes through the upper cover and the bottom plate and is fixedly connected to the elastic member; A floating portion, one end of which is connected to a side of the body away from the traction portion, and the other end of which passes through the lower cover. A groove is defined on the end of the floating portion away from the body, and at least one communication hole is defined on a side surface of the floating portion, the communication holes respectively connecting the groove and the second space; The clamping device also includes: The trachea joint is fixedly provided on the lower cover and is in communication with the groove of the floating portion. By ventilating the trachea joint, gas can enter the groove and then the second space, thereby pushing the movable member to drive the elastic member to return from the deformed state to the initial state; by pumping air into the trachea joint, negative pressure can be generated in the second space, thereby causing the movable member to move downward and drive the elastic member to deform from the initial state to the deformed state.

4. The clamping device according to claim 3, characterized in that The drive assembly further includes: A compression member is disposed in the cavity, one end of the compression member abuts against the body, and the other end of the compression member abuts against the upper cover, so as to restore the elastic member from the deformed state to the initial state.

5. The clamping device according to claim 1, wherein: The clamping device also includes: At least two receiving members are respectively fixedly connected to the bottom plate and located on two opposite sides of the support plate to respectively receive at least two clamping members.

6. The clamping device according to claim 5, characterized in that Each of the receiving components has a protruding component protruding upwards. The elastic component is arranged above the receiving component and is located between the protruding components on at least two of the receiving components.

7. The clamping device according to claim 1, wherein: Each of the clamping members comprises: a movable plate connected to the elastic member; The clamping plate is vertically connected to the movable plate to cooperate with the clamping plate of the opposite clamping member to clamp the workpiece.

8. The clamping device according to claim 7, characterized in that The clamping plates of the two clamping members arranged opposite to each other are provided with toothed portions on one side thereof close to each other, so as to further clamp the workpiece.

Images