Positioning device

Abstract

A positioning device is used for positioning a workpiece, a plurality of through holes are formed in the workpiece, and the positioning device comprises a supporting frame, a positioning plate and a plurality of supporting columns, the supporting columns are connected between the base and the positioning plate, and the positioning plate is used for bearing the workpiece and provided with a plurality of sliding holes; the outer positioning mechanisms are connected to the positioning plate and used for positioning the workpieces; the inner positioning mechanism comprises a lifting assembly, a positioning driving assembly and a plurality of inner positioning assemblies, the lifting assembly is connected to the base, the positioning driving assembly is connected to the lifting assembly, each inner positioning assembly comprises a positioning shell, a traction piece, a pressing piece and a connecting rod, the positioning shell is connected to the lifting assembly, the traction piece is connected with the positioning driving assembly, and the pressing piece is connected with the connecting rod. The pressing piece is rotationally connected to the end, away from the positioning driving assembly, of the positioning shell, and the two ends of the connecting rod are rotationally connected with the traction piece and the positioning shell correspondingly. The positioning device can be used for positioning a workpiece with a hollow structure, and is high in positioning precision and convenient to clean.

Description

Technical Field

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

[0002] When processing parts of electronic equipment, the workpiece needs to be positioned first and then processed. The commonly used method is to clamp the side of the workpiece through a cylinder and a corresponding supporting structure to fix the workpiece. However, when positioning some workpieces with hollow structures inside, such as keyboard shells, only using a cylinder to clamp the side of the workpiece can easily cause deformation inside the workpiece, resulting in inaccurate positioning and affecting subsequent processing. In order to improve the accuracy of workpiece positioning, a contour groove is set on the fixture to accommodate the workpiece. However, during the processing, debris and other impurities are likely to remain in the contour groove, and it is not easy to clean, which can easily cause pressure or scratches on the surface of the workpiece. Utility Model Content

[0003] In view of the above, it is necessary to propose a positioning device that can position a workpiece with a hollow structure, has high positioning accuracy, and is easy to clean.

[0004] The embodiment of the present application provides a positioning device for positioning a workpiece, wherein the workpiece is provided with a plurality of through holes, comprising: a support frame, comprising a base, a positioning plate and a plurality of support columns, wherein the base and the positioning plate are arranged relative to each other, and the plurality of support columns are connected between the base and the positioning plate, the positioning plate is used to carry the workpiece, and the positioning plate is provided with a plurality of sliding holes, each of the sliding holes corresponds to one of the through holes; a plurality of external positioning mechanisms, connected to the peripheral side of the positioning plate, the external positioning mechanisms are used to cooperate with the positioning plate to clamp and position the workpiece; and an internal positioning mechanism, comprising a lifting assembly, a positioning drive assembly and a plurality of internal positioning assemblies, the lifting assembly is connected to the base, the positioning drive assembly is connected to the lifting assembly, and each of the internal positioning assemblies comprises a positioning shell, A traction member, a pressing member and a connecting rod, the positioning shell is connected to the lifting assembly, and one end is set toward the positioning drive assembly, and the other end is slidably set in the sliding hole, the traction member is slidably set in the positioning shell and connected to the positioning drive assembly, the pressing member is rotatably connected to the end of the positioning shell away from the positioning drive assembly, and the two ends of the connecting rod are respectively rotatably connected to the traction member and the positioning shell, the lifting assembly is used to drive the positioning drive assembly and the multiple inner positioning assemblies to move toward the positioning plate, so that the end of the positioning shell away from the positioning drive assembly passes through the sliding hole and the through hole, and the positioning drive assembly is used to drive the traction member to move and then drive the pressing member to rotate and open through the connecting rod, so that the pressing member presses the workpiece.

[0005] The positioning device described above can support the workpiece through the positioning plate, can position the workpiece from the outside of the workpiece through the external positioning mechanism, and can position the workpiece from the inside of the workpiece through the internal positioning mechanism. When the internal positioning mechanism positions the workpiece, the lifting assembly drives the positioning drive assembly and the internal positioning assembly to move toward the positioning plate and the workpiece, so that the positioning shell passes through the sliding hole of the positioning plate and the through hole of the workpiece, the positioning drive assembly drives the traction member to move, and then the traction member drives the connecting rod to move, the connecting rod drives the pressing member to rotate and then open, and the lifting assembly then drives the positioning drive assembly and the internal positioning assembly to move toward the base, so that the pressing member presses the workpiece from the inside of the workpiece to position the workpiece. The positioning device described above can position the workpiece from the outside and inside of the workpiece through the cooperation of the external positioning mechanism and the internal positioning mechanism, and the positioning effect is good. By pressing the workpiece with multiple internal positioning assemblies, the positioning accuracy can be improved. When the workpiece is not positioned, the multiple internal positioning assemblies can slide out of the positioning plate from the sliding hole, which is convenient for cleaning the positioning plate and helps to reduce the risk of debris scratching the workpiece.

[0006] In some embodiments, the positioning shell is provided with a first movable hole and a second movable hole, the first movable hole is extended along the axial direction of the positioning shell, the second movable hole is arranged at one end of the positioning shell facing the positioning plate, the second movable hole is connected to the first movable hole, and the extension direction of the second movable hole is perpendicular to the extension direction of the first movable hole, the traction member is slidably arranged in the first movable hole, and the pressing member is movably arranged in the second movable hole.

[0007] In some embodiments, the lifting assembly includes a lifting drive member and a connecting frame, the lifting drive member is connected to the base, the connecting frame includes a connecting plate and a supporting plate, the connecting plate is connected to the lifting drive member, a plurality of the positioning shells are connected to a side of the connecting plate facing the positioning plate, the supporting plate is connected to a side of the connecting plate away from the positioning plate, the positioning drive assembly is connected to a side of the supporting plate facing the connecting plate, and a plurality of the traction members are movably arranged on the connecting plate and connected to the positioning drive assembly.

[0008] In some embodiments, each of the internal positioning components further includes a guide column and an elastic member, wherein the guide column is connected to the side of the connecting plate facing the positioning plate, the positioning shell is slidably connected to the guide column, the elastic member is sleeved on the guide column, one end of the elastic member is fixedly connected to an end of the guide column away from the connecting plate, and the other end of the elastic member is fixedly connected to the positioning shell.

[0009] In some embodiments, the connecting frame also includes a guide plate, which is connected to the side of the connecting plate facing the positioning plate, and the guide plate is provided with a plurality of first guide holes and a plurality of second guide holes, the plurality of first guide holes correspond one-to-one to the plurality of positioning shells, and the plurality of second guide holes correspond one-to-one to the plurality of guide columns.

[0010] In some embodiments, the lifting assembly also includes multiple bushings, and the multiple bushings are arranged in a one-to-one correspondence with the multiple support columns. The multiple bushings are all connected to the connecting plate, and each of the bushings is sleeved on the corresponding support column. The connecting plate is slidably connected to the corresponding support column through the bushings.

[0011] In some embodiments, the positioning drive assembly includes a positioning drive member and a drive plate, the positioning drive member is connected to the side of the carrier plate facing the connecting plate, the drive plate is connected to the positioning drive member, and the plurality of traction members are connected to the side of the drive plate away from the positioning drive member.

[0012] In some embodiments, a plurality of positioning members are disposed on a side of the positioning plate facing away from the base, each of the positioning members corresponds to one of the through holes, and the positioning members are inserted into the corresponding through holes to position the workpiece.

[0013] In some embodiments, a vacuum suction cup is disposed on a side of the positioning plate facing away from the base, and the vacuum suction cup corresponds to the position of the workpiece and is used to absorb the workpiece to position the workpiece.

[0014] In some embodiments, each of the external positioning mechanisms includes a clamping drive, a guide member and a clamping member, the clamping drive is connected to the positioning plate, the guide member is connected to the positioning plate or the body of the clamping drive, the clamping member is rotatably connected to the output end of the clamping drive, and the clamping member is also rotatably connected to the guide member, the clamping drive drives the clamping member to rotate around the connection between the clamping member and the guide member, thereby making the end of the clamping member away from the clamping drive cooperate with the positioning plate to clamp and position the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the structure of a positioning device provided in an embodiment of the present application.

[0016] Figure 2 for Figure 1 The schematic diagram of the exploded structure of the positioning device is shown.

[0017] Figure 3 for Figure 2 A schematic diagram of the exploded structure of the inner positioning mechanism in the positioning device shown.

[0018] Figure 4 for Figure 3 A schematic structural diagram of the inner positioning component in the inner positioning mechanism shown.

[0019] Figure 5 for Figure 4 The schematic cross-sectional view of the inner positioning assembly along the V-V direction is shown.

[0020] Figure 6 for Figure 5 A schematic cross-sectional view of the inner positioning assembly when the pressing parts are closed is shown.

[0021] Description of the main component symbols: positioning device 100, support frame 10, base 11, positioning plate 12, sliding hole 121, positioning member 122, vacuum suction cup 123, support column 13, external positioning mechanism 20, clamping drive member 21, guide member 22, clamping member 23, internal positioning mechanism 30, lifting assembly 31, lifting drive member 311, connecting frame 312, connecting plate 3121, bearing plate 3122, guide plate 3123, first guide hole 3123a, second guide hole 3123b, sleeve 313, positioning drive assembly 32, positioning drive member 321, drive plate 322, internal positioning assembly 33, positioning shell 331, first movable hole 3311, second movable hole 3312, traction member 332, pressing member 333, connecting rod 334, guide column 335, elastic member 336, workpiece 200, through hole 201. DETAILED DESCRIPTION

[0022] 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.

[0023] 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.

[0024] 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.

[0025] The embodiments of the present application are further described below in conjunction with the accompanying drawings.

[0026] See also Figure 1 The present application embodiment provides a positioning device 100 for positioning a workpiece 200, wherein the workpiece 200 is provided with a plurality of through holes 201. In the present embodiment, the workpiece 200 may be a shell of a keyboard surface of a laptop computer. Of course, the workpiece 200 may also be other parts with hollow structures, which are not limited here. The positioning device 100 includes a support frame 10, a plurality of external positioning mechanisms 20, and an internal positioning mechanism 30.

[0027] Specifically, see Figure 1 , Figure 2 and Figure 3 The support frame 10 includes a base 11, a positioning plate 12 and a plurality of support columns 13. The base 11 and the positioning plate 12 are arranged opposite to each other. The plurality of support columns 13 are connected between the base 11 and the positioning plate 12. The positioning plate 12 is used to carry the workpiece 200. The positioning plate 12 is provided with a plurality of sliding holes 121, and each sliding hole 121 corresponds to a through hole 201. The base 11 may be a plate-like structure to provide a stable support. The support columns 13 may be provided with four, six, etc., to stably connect the base 11 and the positioning plate 12. The number of sliding holes 121 in the positioning plate 12 may be six, eight, ten, etc., and the number may be less than the number of through holes 201 in the workpiece 200, so as to ensure that each sliding hole 121 corresponds to a through hole 201. The specific number of sliding holes 121 and the position on the positioning plate 12 may be set according to the structure of the workpiece 200, and are not limited here.

[0028] A plurality of external positioning mechanisms 20 are connected to the peripheral side of the positioning plate 12, and the external positioning mechanisms 20 are used to cooperate with the positioning plate 12 to clamp and position the workpiece 200. Four, six, etc. external positioning mechanisms 20 can be provided, and the external positioning mechanisms 20 are used to press the workpiece 200 against the positioning plate 12 to position the workpiece 200 from the outside of the workpiece 200.

[0029] Please also see Figure 4 and Figure 5The inner positioning mechanism 30 includes a lifting assembly 31, a positioning drive assembly 32 and a plurality of inner positioning assemblies 33. The lifting assembly 31 is connected to the base 11, and the positioning drive assembly 32 is connected to the lifting assembly 31. Each inner positioning assembly 33 includes a positioning shell 331, a traction member 332, a pressing member 333 and a connecting rod 334. The positioning shell 331 is connected to the lifting assembly 31, and one end is arranged toward the positioning drive assembly 32, and the other end is slidably arranged in the sliding hole 121. The traction member 332 is slidably arranged in the positioning shell 331 and is connected to the positioning drive assembly 32. The pressing member 333 is rotatably connected to the end of the positioning shell 331 away from the positioning drive assembly 32, and the two ends of the connecting rod 334 are rotatably connected to the traction member 332 and the positioning shell 331 respectively. The lifting assembly 31 is used to drive the positioning drive assembly 32 and the multi-inner positioning assembly 33 to move toward the positioning plate 12, so that the end of the positioning shell 331 away from the positioning drive assembly 32 passes through the sliding hole 121 and the through hole 201, and the positioning drive assembly 32 is used to drive the traction member 332 to move and then drive the pressing member 333 to rotate and open through the connecting rod 334, so that the pressing member 333 presses the workpiece 200.

[0030] There may be four, six, ten, etc. inner positioning components 33, each inner positioning component 33 corresponds to a sliding hole 121, the number of inner positioning components 33 may be the same as the number of sliding holes 121 or less than the number of sliding holes 121, and the specific number and position of the inner positioning components 33 may be set according to actual needs, which is not limited here. The positioning shell 331 may be a columnar structure, and it can be understood that the cross-sectional area of ​​the positioning shell 331 on the horizontal plane is not greater than the area of ​​the sliding hole 121 and the through hole 201. In one embodiment, the cross-sectional structure of the positioning shell 331 on the horizontal plane is adapted to the cross-sectional structure of the through hole 201 on the horizontal plane, so that when the positioning shell 331 is inserted into the through hole 201, the position of the workpiece 200 on the horizontal plane can be corrected. The traction member 332 can be a columnar structure, one end of which is connected to the positioning drive assembly 32, and the other end is connected to the connecting rod 334. One end of the pressing member 333 is rotatably connected to the positioning shell 331, and the end of the connecting rod 334 away from the traction member 332 is connected to the middle part of the pressing member 333. In this way, when the positioning drive assembly 32 drives the traction member 332 to move, the traction member 332 drives the pressing member 333 to rotate through the connecting rod 334, thereby opening or closing the pressing member 333.

[0031] In one embodiment, see Figure 5 and Figure 6 Each inner positioning assembly 33 is provided with two connecting rods 334 and two pressing pieces 333. The two connecting rods 334 are connected to the traction member 332. Each connecting rod 334 is connected to a pressing piece 333. The two pressing pieces 333 are symmetrically arranged. The traction member 332 drives the two connecting rods 334, thereby driving the two pressing pieces 333 to open or close.

[0032] The process of the inner positioning mechanism 30 positioning the workpiece 200 is roughly as follows: the lifting assembly 31 drives the positioning drive assembly 32 and the plurality of inner positioning assemblies 33 to move toward the positioning plate 12, so that one end of the positioning shells 331 of the plurality of inner positioning assemblies 33 connected with the pressing piece 333 passes through the sliding hole 121 and the through hole 201, and then the positioning drive assembly 32 drives the traction member 332 to move, so as to drive the pressing piece 333 to rotate through the connecting rod 334 and thus open the pressing piece 333. Then the lifting assembly 31 drives the positioning drive assembly 32 and the inner positioning assembly 33 to descend synchronously until the pressing piece 333 presses the workpiece 200, so that the inner positioning mechanism 30 realizes the positioning of the workpiece 200.

[0033] The positioning device 100 provided in the embodiment of the present application can support the workpiece 200 through the positioning plate 12, can position the workpiece 200 from the outside of the workpiece 200 through the external positioning mechanism 20, and can position the workpiece 200 from the inside of the workpiece 200 through the internal positioning mechanism 30. When the internal positioning mechanism 30 positions the workpiece 200, the lifting assembly 31 drives the positioning drive assembly 32 and the internal positioning assembly 33 to move toward the positioning plate 12 and the workpiece 200, so that the positioning shell 331 passes through the sliding hole 121 of the positioning plate 12 and the through hole 201 of the workpiece 200, the positioning drive assembly 32 drives the traction member 332 to move, and then the traction member 332 drives the connecting rod 334 to move, and the connecting rod 334 drives the pressing member 333 to rotate and then open, and the lifting assembly 31 then drives the positioning drive assembly 32 and the internal positioning assembly 33 to move toward the base 11, so that the pressing member 333 presses the workpiece 200 from the inside of the workpiece 200 to position the workpiece 200. The above-mentioned positioning device 100 can position the workpiece 200 from the outside and inside of the workpiece 200 through the cooperation of the external positioning mechanism 20 and the internal positioning mechanism 30, and the positioning effect is good. The workpiece 200 is pressed and held by multiple internal positioning components 33, so the positioning accuracy can be improved. When the workpiece 200 is not positioned, the multiple internal positioning components 33 can slide out of the positioning plate 12 from the sliding hole 121, which is convenient for cleaning the positioning plate 12 and helps to reduce the risk of debris scratching the workpiece 200.

[0034] In some embodiments, see Figure 4 , Figure 5 and Figure 6The positioning shell 331 is provided with a first movable hole 3311 and a second movable hole 3312. The first movable hole 3311 is arranged along the extension direction of the positioning shell 331. The second movable hole 3312 is arranged at one end of the positioning shell 331 facing the positioning plate 12. The second movable hole 3312 is connected with the first movable hole 3311, and the extension direction of the second movable hole 3312 is perpendicular to the extension direction of the first movable hole 3311. The traction member 332 is slidably arranged in the first movable hole 3311, and the pressing member 333 is movably arranged in the second movable hole 3312. By providing the first positioning hole, the traction member 332 can be accommodated, so that the traction member 332 is hidden in the positioning shell 331 while being slidably connected with the positioning shell 331, so as to avoid the interference of the traction member 332 with other structures, thereby affecting the movement of the traction member 332. By providing the second movable hole 3312, a movable space can be provided for the pressing member 333, and the pressing member 333 can be accommodated when the pressing member 333 is closed. By setting the first movable hole 3311 and the second movable hole 3312, the flexibility and adaptability of the internal positioning component 33 are optimized, so that the traction member 332 and the pressing member 333 can move efficiently along a precise path, thereby improving the positioning accuracy of the workpiece 200 and the operating efficiency of the device, while simplifying the mechanical structure, reducing manufacturing costs and maintenance difficulties, and enhancing the durability and reliability of the equipment.

[0035] In some embodiments, see Figure 1 and Figure 2 The lifting assembly 31 includes a lifting drive member 311 and a connecting frame 312. The lifting drive member 311 is connected to the base 11. The connecting frame 312 includes a connecting plate 3121 and a bearing plate 3122. The connecting plate 3121 is connected to the lifting drive member 311. A plurality of positioning shells 331 are connected to the side of the connecting plate 3121 facing the positioning plate 12. The bearing plate 3122 is connected to the side of the connecting plate 3121 away from the positioning plate 12. The positioning drive assembly 32 is connected to the side of the bearing plate 3122 facing the connecting plate 3121. A plurality of traction members 332 are movably arranged on the connecting plate 3121 and connected to the positioning drive assembly 32. The lifting drive member 311 can be a cylinder. The bearing plate 3122 and the connecting plate 3121 are spaced and connected to reserve space for the positioning drive assembly 32 between the bearing plate 3122 and the connecting plate 3121. The lifting driving member 311 drives the connecting plate 3121 to move, the connecting plate 3121 drives the carrying plate 3122 to move, and the carrying plate 3122 drives the positioning driving assembly 32 to move.

[0036] In some embodiments, see Figure 2 , Figure 3 and Figure 5Each inner positioning assembly 33 further includes a guide column 335 and an elastic member 336. The guide column 335 is connected to the side of the connecting plate 3121 facing the positioning plate 12. The positioning shell 331 is slidably connected to the guide column 335. The elastic member 336 is sleeved on the guide column 335. One end of the elastic member 336 is fixedly connected to the end of the guide column 335 away from the connecting plate 3121, and the other end of the elastic member 336 is fixedly connected to the positioning shell 331. The guide column 335 is fixedly connected to the connecting plate 3121. The elastic member 336 can be a spring or other elastic structure. The two ends of the elastic member 336 are fixedly connected to the positioning shell 331 and the guide column 335, respectively. In this way, the positioning shell 331 can be elastically connected to the connecting plate 3121. When the pressing member 333 contacts the workpiece 200, the elastic member 336 can provide a buffer to prevent the pressing member 333 from rigidly contacting the workpiece 200 and causing damage to the workpiece 200. The guide post 335 ensures accurate sliding of the positioning housing 331 , while the elastic member 336 allows a certain degree of elastic deformation, thereby absorbing impact force and reducing potential damage to the workpiece 200 .

[0037] In one embodiment, each inner positioning assembly 33 is provided with two guide columns 335 and two elastic members 336. The two guide columns 335 are respectively slidably connected to the positioning shell 331, and the two elastic members 336 are respectively sleeved on the two guide columns 335. In this way, the stability of the positioning shell 331 can be further improved.

[0038] In some embodiments, see Figure 2 , Figure 3 and Figure 4 The connecting frame 312 also includes a guide plate 3123, which is connected to the side of the connecting plate 3121 facing the positioning plate 12. The guide plate 3123 is provided with a plurality of first guide holes 3123a and a plurality of second guide holes 3123b. The plurality of first guide holes 3123a correspond to the plurality of positioning shells 331 one by one, and the plurality of second guide holes 3123b correspond to the plurality of guide posts 335 one by one. The number and position of the first guide holes 3123a correspond to the number and position of the positioning shells 331 to guide the movement direction of the positioning shells 331. The number and position of the second guide holes 3123b correspond to the number and position of the guide posts 335. It can be understood that the elastic member 336 is correspondingly arranged in the second guide hole 3123b. By setting the guide plate 3123, the stability of the operation of the positioning shell 331 can be improved, and the accuracy of positioning the workpiece 200 can be improved.

[0039] In some embodiments, see Figure 2 and Figure 3The lifting assembly 31 also includes a plurality of sleeves 313, and the plurality of sleeves 313 are arranged in one-to-one correspondence with the plurality of support columns 13. The plurality of sleeves 313 are all connected to the connecting plate 3121, and each sleeve 313 is sleeved on the corresponding support column 13, and the connecting plate 3121 is slidably connected to the corresponding support column 13 through the sleeves 313. The sleeves 313 can be linear bearings, etc., and the number of the sleeves 313 can be four, six, etc., which is consistent with the number of the support columns 13. By setting the sleeves 313, a sliding connection between the connecting plate 3121 and the support column 13 is achieved. Such a structure not only improves the stability and load-bearing capacity of the positioning device 100, but also reduces the friction and wear caused by direct metal contact through the setting of the sleeves 313, thereby extending the service life of the equipment.

[0040] In some embodiments, see Figure 2 and Figure 3 The positioning drive assembly 32 includes a positioning drive member 321 and a drive plate 322. The positioning drive member 321 is connected to the side of the carrier plate 3122 facing the connecting plate 3121. The drive plate 322 is connected to the positioning drive member 321. The plurality of traction members 332 are all connected to the side of the drive plate 322 away from the positioning drive member 321. The positioning drive member 321 can be a cylinder, etc. By providing the drive plate 322, the plurality of traction members 332 can be connected to the positioning drive member 321, so that the positioning drive member 321 drives the plurality of traction members 332 to move synchronously through the drive plate 322.

[0041] In some embodiments, see Figure 1 and Figure 2 , a plurality of positioning members 122 are provided on the side of the positioning plate 12 away from the base 11, each positioning member 122 corresponds to a through hole 201, and the positioning member 122 is inserted into the corresponding through hole 201 to position the workpiece 200. The positioning member 122 can be a columnar structure, and the number of the positioning members 122 can be two, three, four, etc. It can be understood that each positioning member 122 corresponds to a through hole 201, so that when the workpiece 200 is placed on the positioning plate 12, the positioning member 122 can be inserted into the corresponding through hole 201 to position the workpiece 200.

[0042] In some embodiments, see Figure 1 and Figure 2A vacuum suction cup 123 is provided on the side of the positioning plate 12 away from the base 11. The vacuum suction cup 123 corresponds to the position of the workpiece 200 and is used to absorb the workpiece 200 to position the workpiece 200. It can be understood that the vacuum suction cup 123 corresponds to the position of the workpiece 200 where the through hole 201 is not provided. The vacuum suction cup 123 is connected to an external exhaust device (not shown). When the workpiece 200 is placed on the positioning plate 12, the external exhaust device performs exhaust, and the vacuum suction cup 123 absorbs the workpiece 200, thereby improving the stability of positioning the workpiece 200.

[0043] In some embodiments, see Figure 1 and Figure 2 Each external positioning mechanism 20 includes a clamping drive 21, a guide 22 and a clamping member 23. The clamping drive 21 is connected to the positioning plate 12, the guide 22 is connected to the positioning plate 12 or the body of the clamping drive 21, the clamping member 23 is rotatably connected to the output end of the clamping drive 21, and the clamping member 23 is also rotatably connected to the guide 22. The clamping drive 21 drives the clamping member 23 to rotate around the connection between the clamping member 23 and the guide 22, so that the end of the clamping member 23 away from the clamping drive 21 cooperates with the positioning plate 12 to clamp and position the workpiece 200. The clamping drive 21 can be a cylinder, and the clamping drive 21 can drive the clamping member 23 to rotate accurately around the connection point to achieve stable clamping of the workpiece 200. In addition, by providing the guide 22, the accuracy of the rotation of the clamping member 23 is ensured, and the deviation or sliding of the workpiece 200 is avoided.

[0044] The working process of the positioning device 100 provided in the embodiment of the present application is roughly as follows:

[0045] First, the workpiece 200 is placed on the positioning plate 12, and the positioning member 122 is passed through the corresponding through hole 201 to preliminarily position the workpiece 200. Then the clamping driving member 21 drives the clamping member 23 to move, so that the holding member cooperates with the positioning plate 12 to clamp and position the workpiece 200. Then the vacuum suction cup 123 absorbs the workpiece 200 to further improve the stability of the positioning workpiece 200.

[0046] After the vacuum suction cup 123 absorbs the workpiece 200, the lifting drive member 311 drives the connecting frame 312 to move toward the positioning plate 12, and the connecting frame 312 drives the positioning drive assembly 32 and the multiple inner positioning assemblies 33 to move toward the positioning plate 12, so that the positioning shells 331 of the multiple inner positioning assemblies 33 are connected to one end of the pressing member 333 through the sliding hole 121 and the through hole 201. Then the positioning drive member 321 drives the driving plate 322 to move away from the positioning plate 12, and then drives the multiple traction members 332 to move, and the traction members 332 drive the pressing member 333 to rotate through the connecting rod 334, so that the pressing member 333 opens. Then the lifting drive member 311 drives the positioning drive assembly 32 and the inner positioning assembly 33 to descend synchronously until the pressing member 333 presses the workpiece 200, so that the inner positioning mechanism 30 completes the positioning of the workpiece 200.

[0047] 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.

[0048] 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 positioning device for positioning a workpiece, wherein the workpiece is provided with a plurality of through holes, characterized in that: include: A support frame, comprising a base, a positioning plate and a plurality of support columns, wherein the base and the positioning plate are arranged opposite to each other, the plurality of support columns are connected between the base and the positioning plate, the positioning plate is used to carry the workpiece, the positioning plate is provided with a plurality of sliding holes, each of the sliding holes corresponds to one of the through holes; A plurality of external positioning mechanisms connected to the peripheral side of the positioning plate, the external positioning mechanisms being used to cooperate with the positioning plate to clamp and position the workpiece; and The inner positioning mechanism comprises a lifting assembly, a positioning drive assembly and multiple inner positioning assemblies, the lifting assembly is connected to the base, the positioning drive assembly is connected to the lifting assembly, each of the inner positioning assemblies comprises a positioning shell, a traction member, a pressing member and a connecting rod, the positioning shell is connected to the lifting assembly, and one end is arranged toward the positioning drive assembly, and the other end is slidably arranged in the sliding hole, the traction member is slidably arranged in the positioning shell and connected to the positioning drive assembly, the pressing member is rotatably connected to the end of the positioning shell away from the positioning drive assembly, the two ends of the connecting rod are respectively rotatably connected to the traction member and the positioning shell, the lifting assembly is used to drive the positioning drive assembly and the multiple inner positioning assemblies to move toward the positioning plate, so that the end of the positioning shell away from the positioning drive assembly passes through the sliding hole and the through hole, the positioning drive assembly is used to drive the traction member to move and then drive the pressing member to rotate and open through the connecting rod, so that the pressing member presses the workpiece.

2. The positioning device according to claim 1, characterized in that The positioning shell is provided with a first movable hole and a second movable hole, the first movable hole is extended along the axial direction of the positioning shell, the second movable hole is arranged at one end of the positioning shell facing the positioning plate, the second movable hole is connected to the first movable hole, and the extension direction of the second movable hole is perpendicular to the extension direction of the first movable hole, the traction member is slidably arranged in the first movable hole, and the pressing member is movably arranged in the second movable hole.

3. The positioning device according to claim 1, characterized in that: The lifting assembly includes a lifting drive member and a connecting frame, the lifting drive member is connected to the base, the connecting frame includes a connecting plate and a bearing plate, the connecting plate is connected to the lifting drive member, a plurality of positioning shells are connected to a side of the connecting plate facing the positioning plate, the bearing plate is connected to a side of the connecting plate away from the positioning plate, the positioning drive assembly is connected to a side of the bearing plate facing the connecting plate, and a plurality of traction members are movably arranged on the connecting plate and connected to the positioning drive assembly.

4. The positioning device according to claim 3, characterized in that: Each of the inner positioning components also includes a guide column and an elastic member, wherein the guide column is connected to the side of the connecting plate facing the positioning plate, the positioning shell is slidably connected to the guide column, the elastic member is sleeved on the guide column, one end of the elastic member is fixedly connected to an end of the guide column away from the connecting plate, and the other end of the elastic member is fixedly connected to the positioning shell.

5. The positioning device according to claim 4, characterized in that: The connecting frame also includes a guide plate, which is connected to the side of the connecting plate facing the positioning plate. The guide plate is provided with a plurality of first guide holes and a plurality of second guide holes. The plurality of first guide holes correspond one-to-one to the plurality of positioning shells, and the plurality of second guide holes correspond one-to-one to the plurality of guide columns.

6. The positioning device according to claim 3, characterized in that: The lifting assembly also includes a plurality of shaft sleeves, which are arranged in one-to-one correspondence with the plurality of support columns. The plurality of shaft sleeves are all connected to the connecting plate, and each of the shaft sleeves is sleeved on the corresponding support column. The connecting plate is slidably connected to the corresponding support column through the shaft sleeves.

7. The positioning device according to claim 3, characterized in that: The positioning drive assembly includes a positioning drive member and a drive plate. The positioning drive member is connected to the side of the carrier plate facing the connecting plate, the drive plate is connected to the positioning drive member, and the plurality of traction members are connected to the side of the drive plate away from the positioning drive member.

8. The positioning device according to claim 1, characterized in that: A plurality of positioning members are arranged on one side of the positioning plate away from the base, each of the positioning members corresponds to one of the through holes, and the positioning members are inserted into the corresponding through holes to position the workpiece.

9. The positioning device according to claim 1, characterized in that: A vacuum suction cup is arranged on a side of the positioning plate away from the base, and the vacuum suction cup corresponds to the position of the workpiece and is used for adsorbing the workpiece to position the workpiece.

10. The positioning device according to claim 1, characterized in that: Each of the external positioning mechanisms includes a clamping drive, a guide and a clamping member, the clamping drive is connected to the positioning plate, the guide is connected to the positioning plate or the body of the clamping drive, the clamping member is rotatably connected to the output end of the clamping drive, and the clamping member is also rotatably connected to the guide, the clamping drive drives the clamping member to rotate around the connection between the clamping member and the guide, thereby making the end of the clamping member away from the clamping drive cooperate with the positioning plate to clamp and position the workpiece.

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