Positioning device

Abstract

A positioning device comprises a base, a positioning mechanism arranged on the base and a pressing mechanism rotationally connected to the base, the base is provided with a positioning table used for bearing workpieces and a plurality of positioning blocks, and the positioning mechanism comprises a first positioning assembly, a second positioning assembly and a linkage assembly which are arranged on the base. The first positioning assembly and the second positioning assembly are used for abutting against a workpiece so as to position the workpiece, the linkage assembly is used for driving the first positioning assembly and the second positioning assembly to abut against or loosen the workpiece, the material pressing mechanism comprises a guiding piece rotationally connected to the base, a material pressing piece connected to the guiding piece and a material pressing handle, and the material pressing piece is provided with an avoiding hole; the receding hole corresponds to a to-be-detected part of the workpiece, and the material pressing handle drives the material pressing piece to press the workpiece on the positioning table. According to the positioning device, the workpiece can be positioned in a three-dimensional space through the positioning mechanism and the pressing mechanism, the positioning stability is high, the to-be-detected part of the workpiece can be avoided through the avoiding hole in the pressing piece, and the workpiece can be detected conveniently.

Description

Technical Field

[0001] This application relates to the technical field of processing positioning, and particularly to a positioning device. Background Art

[0002] During the production process of electronic product components, precise multi-dimensional detection of workpieces is crucial. In particular, measuring the thickness of workpieces usually involves specific detection methods. Traditional detection means position the workpiece from the side, and then use precision measuring tools such as height gauges to obtain data. However, for workpieces with complex structures or irregular shapes, after side positioning, the stability of the workpiece in the height direction cannot be guaranteed, resulting in easy occurrence of small offsets of the workpiece in the height direction during the measurement process, thereby affecting the accuracy of the measurement results. Summary of the Utility Model

[0003] In view of the above, it is necessary to propose a positioning device that can position the workpiece in three-dimensional space through a positioning mechanism and a material pressing mechanism, with high positioning stability. The part to be detected of the workpiece can be avoided through the avoidance holes on the material pressing piece, facilitating the detection of the workpiece.

[0004] The embodiment of the present application provides a positioning device, comprising: a base, provided with a positioning platform for carrying a workpiece and a plurality of positioning blocks arranged on two adjacent side edges of the positioning platform; a positioning mechanism, movably arranged on the base, the positioning mechanism comprising a first positioning component, a second positioning component and a linkage component arranged on the base, the first positioning component being arranged along a first direction and corresponding to the positioning block on one side of the positioning platform, the second positioning component being arranged along a second direction and corresponding to the positioning block on the other side of the positioning platform, the first positioning component and the second positioning component being used to hold the workpiece against the corresponding positioning block to position the workpiece on a horizontal plane, the linkage component being connected to the first positioning component, the linkage component being used to drive the first positioning component to approach or move away from the workpiece, and the first positioning component driving the second positioning component The positioning component approaches or moves away from the workpiece, thereby causing the first positioning component and the second positioning component to abut or release the workpiece; and a pressing mechanism, which is rotatably connected to the base, wherein the pressing mechanism includes a guide member extending along a third direction and rotatably connected to the base, a pressing member slidably connected to the guide member along the third direction, and a pressing handle rotatably connected to the guide member, wherein the pressing member is provided with a avoidance hole extending along the third direction, the avoidance hole corresponding to the part of the workpiece to be detected, the pressing handle abuts against the side of the pressing member away from the base, the pressing member can be rotated along the axis of the guide member to above the positioning platform, and press the workpiece on the positioning platform under the drive of the pressing handle, thereby positioning the workpiece in the third direction; wherein, the first direction, the second direction and the third direction are perpendicular to each other.

[0005] The above-mentioned positioning device can support the workpiece through the positioning table on the base, and push the workpiece to the corresponding positioning block through the first positioning component in the positioning mechanism to position the workpiece in the first direction, and push the workpiece to the corresponding positioning block through the second positioning component to position the workpiece in the second direction. In this way, the workpiece can be positioned on the horizontal plane through the positioning mechanism. The pressing piece in the pressing mechanism can be rotated along the axis of the guide to the top of the positioning table, and correspond to the workpiece in the third direction. The pressing piece can be driven to move toward the workpiece through the pressing handle, and then the workpiece is pressed on the positioning table to complete the positioning of the workpiece in the vertical direction. The above-mentioned positioning device can position the workpiece in three-dimensional space through the cooperation of the positioning mechanism and the pressing mechanism, and has high positioning stability. The part to be detected of the workpiece can be avoided through the avoidance hole on the pressing piece in the pressing mechanism, which is convenient for detecting the workpiece.

[0006] In some embodiments, on one side of the base away from the positioning table, a first sliding groove extending along the first direction and a first moving hole communicating with the first sliding groove are formed. The first moving hole is disposed close to the positioning table. On the side of the base away from the positioning table, a support plate covering the first sliding groove is further provided. The first positioning component includes a first sliding member slidably disposed in the first sliding groove, a first positioning member connected to the first sliding member and extending out of the first moving hole along the third direction, a first stop member connected to the support plate, and a first elastic member abutting against the first stop member. A first strip-shaped hole is formed in the first sliding member, and the first stop member is inserted into the first strip-shaped hole. One end of the first elastic member away from the first stop member abuts against the side wall of the first strip-shaped hole away from the first positioning member. The first elastic member pushes the first sliding member to move along the first direction, thereby driving the first positioning member to move along the first direction to abut against the workpiece.

[0007] In some embodiments, on one side of the base away from the positioning table, a second sliding groove extending along the second direction and a second moving hole communicating with the second sliding groove are further formed. The second sliding groove intersects and communicates with the first sliding groove. The second moving hole is disposed close to the positioning table. The second positioning component includes a second sliding member slidably disposed in the second sliding groove, a second positioning member connected to the second sliding member and extending out of the second moving hole along the third direction, a second stop member connected to the support plate, and a second elastic member abutting against the second stop member. The second sliding member abuts against the lower side of the first sliding member. A second strip-shaped hole is formed in the second sliding member, and the second stop member is inserted into the second strip-shaped hole. One end of the second elastic member away from the second stop member abuts against the side wall of the second strip-shaped hole away from the second positioning member. The second elastic member pushes the second sliding member to move along the second direction, thereby driving the second positioning member to move along the second direction to abut against the workpiece.

[0008] In some embodiments, a groove is formed on one side of the first sliding member close to the second positioning member, and a protrusion adapted to the groove is provided at one end of the second sliding member where the second positioning member is disposed. When the first positioning member abuts against the workpiece, the groove and the protrusion are opposite to each other, and the protrusion abuts against the groove. When the second positioning member abuts against the workpiece and the first positioning member moves away from the workpiece, the groove moves away from the protrusion in the first direction, and the groove wall of the groove pushes the protrusion to move in the opposite direction of the second direction, thereby moving the second positioning member away from the workpiece.

[0009] In some embodiments, the linkage assembly includes a rotating shaft rotatably connected to the base and a driving handle connected to one end of the rotating shaft away from the base. The rotating shaft is disposed at one end of the base and abuts against one end of the first sliding member away from the first positioning member. An eccentric portion is provided at a position of the rotating shaft opposite to the first sliding member in the third direction. The driving handle drives the rotating shaft to rotate, and then pushes the first sliding member to move in the opposite direction of the first direction through the eccentric portion, so that the first positioning member moves away from the workpiece.

[0010] In some embodiments, two limit pins are further provided on one side of the base where the positioning platform is provided. The two limit pins are disposed on both sides of the rotating shaft in the second direction. When the driving handle rotates, it abuts against the limit pins, so that the limit pins limit the driving handle.

[0011] In some embodiments, the pressing mechanism further includes a third elastic member sleeved on the guiding member. Two ends of the third elastic member respectively abut against the base and the pressing member, and the third elastic member pushes the pressing member to abut against the pressing handle.

[0012] In some embodiments, an arc-shaped groove centered on the axis of the guiding member is provided on one side of the base facing the pressing member. A guiding pin is provided on one side of the pressing member facing the base, and one end of the guiding pin away from the pressing member is slidably disposed in the arc-shaped groove.

[0013] In some embodiments, an eccentric convex portion is provided at one end of the pressing handle connected to the guiding member. The pressing handle can push the pressing member to move towards the workpiece through the eccentric convex portion, so that the pressing member presses the workpiece.

[0014] In some embodiments, the pressing mechanism further includes a flexible member connected to the pressing member. The flexible member is disposed on one side of the pressing member for pressing the workpiece, and the flexible member is used to flexibly abut against the workpiece. Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of the positioning device provided by the embodiment of the present application.

[0016] Figure 2 is Figure 1 A schematic structural diagram when the positioning mechanism of the shown positioning device clamps the workpiece.

[0017] Figure 3 is Figure 2 A schematic structural diagram when the pressing mechanism of the shown positioning device presses the workpiece.

[0018] Figure 4 isFigure 1 Schematic structural diagram of the base of the positioning device shown

[0019] Figure 5 is Figure 4 Another perspective exploded structural diagram of the base shown

[0020] Figure 6 is Figure 1 Top view of the positioning mechanism of the positioning device shown

[0021] Figure 7 is Figure 2 Top view of the positioning mechanism of the positioning device shown

[0022] Figure 8 is Figure 7 Exploded structural diagram of the positioning mechanism shown

[0023] Figure 9 is Figure 3 Exploded structural diagram of the blank holding mechanism of the positioning device shown

[0024] Description of main component symbols: positioning device 100, base 10, positioning table 11, positioning block 12, limit pin 13, arc groove 14, first sliding groove 15, first moving hole 16, second sliding groove 17, second moving hole 18, support plate 19, positioning mechanism 20, first positioning component 21, first sliding member 211, first strip-shaped hole 2111, groove 2112, first positioning member 212, first stop member 213, first elastic member 214, second positioning component 22, second sliding member 221, second strip-shaped hole 2211, protrusion 2212, second positioning member 222, second stop member 223, second elastic member 224, linkage component 23, rotating shaft 231, eccentric part 2311, driving handle 232, blank holding mechanism 30, guiding member 31, blank holding member 32, avoidance hole 321, blank holding handle 33, eccentric convex part 331, third elastic member 34, guiding pin 35, flexible member 36, workpiece 200. Detailed implementation manners

[0025] The following details the implementation manners of the present application. Examples of the implementation manners are shown in the drawings, where the same or similar reference numerals denote the same or similar components or components with the same or similar functions throughout. The implementation manners described below with reference to the drawings are exemplary only for explaining the present application and should not be construed as limiting the present application.

[0026] 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 component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. In addition, in the description of the present application, it should be noted that the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0027] 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 a connection that can communicate with each other. It can be directly connected, or indirectly connected through an intermediate medium. It can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to specific circumstances. Some embodiments of the present application will be described in detail below with reference to the drawings.

[0028] With reference to the drawings below, the embodiments of the present application will be further described. To facilitate the understanding and description of the embodiments of the present application, a three-dimensional coordinate system is established in some of the drawings. The X-axis direction is the first direction, the Y-axis direction is the second direction, and the Z-axis direction is the third direction. The X-axis direction, the Y-axis direction, and the Z-axis direction are perpendicular to each other in pairs.

[0029] Please refer to Figure 1 、 Figure 2 and Figure 3 , an embodiment of the present application provides a positioning device 100 for positioning a workpiece 200. The positioning device 100 includes a base 10, a positioning mechanism 20, and a material pressing mechanism 30.

[0030] Please refer to Figure 4 together, the base 10 is provided with a positioning table 11 for carrying the workpiece 200 and a plurality of positioning blocks 12 arranged on two adjacent sides close to the positioning table 11. One side of the positioning table 11 away from the base 10 is a plane to provide stable support for the workpiece 200. The number of positioning blocks 12 arranged on the side of the positioning table 11 is one or two.

[0031] On the side of the base 10 where the positioning table 11 is provided, two limit pins 13 and an arc-shaped groove 14 spaced from the positioning table 11 are also provided.

[0032] Please refer to Figure 5 together, on the side of the base 10 facing away from the positioning table 11, a first sliding groove 15 extending in the X-axis direction and a first moving hole 16 communicating with the first sliding groove 15 are provided. The first moving hole 16 is arranged close to the positioning table 11.

[0033] On the side of the base 10 facing away from the positioning table 11, a second sliding groove 17 extending in the Y-axis direction and a second moving hole 18 communicating with the second sliding groove 17 are further provided. The second sliding groove 17 intersects and communicates with the first sliding groove 15, and the second moving hole 18 is arranged close to the positioning table 11.

[0034] On the side of the base 10 facing away from the positioning table 11, a support plate 19 covering the first sliding groove 15 and the second sliding groove 17 is further provided.

[0035] The positioning mechanism 20 is movably arranged on the base 10. The positioning mechanism 20 includes a first positioning component 21, a second positioning component 22 and a linkage component 23 arranged on the base 10.

[0036] Please refer to Figure 1 、 Figure 6 and Figure 7 , the first positioning component 21 is arranged along the X-axis direction and corresponds to the positioning block 12 on one side of the positioning table 11. The first positioning component 21 is used to abut the workpiece 200 against the corresponding positioning block 12 to position the workpiece 200 in the X-axis direction.

[0037] The first positioning component 21 includes a first sliding member 211 slidably arranged in the first sliding groove 15, a first positioning member 212 connected to the first sliding member 211 and extending out of the first moving hole 16 along the Z-axis direction, a first stop member 213 connected to the support plate 19, and a first elastic member 214 abutted against the first stop member 213. The first sliding member 211 is provided with a first strip-shaped hole 2111 and a groove 2112. The first stop member 213 is inserted into the first strip-shaped hole 2111. One end of the first elastic member 214 away from the first stop member 213 abuts against the side wall of the first strip-shaped hole 2111 away from the first positioning member 212. The first elastic member 214 pushes the first sliding member 211 to move along the X-axis direction, and then drives the first positioning member 212 to move along the X-axis direction to abut the workpiece 200. The first sliding member 211 is a plate-like structure, the first stop member 213 is a block-like structure, and the first elastic member 214 is a spring.

[0038] The second positioning component 22 is arranged along the Y-axis direction and corresponds to the positioning block 12 on the other side of the positioning table 11. The second positioning component 22 is used to abut the workpiece 200 against the corresponding positioning block 12 to position the workpiece 200 in the Y-axis direction.

[0039] The second positioning component 22 includes a second sliding member 221 slidably disposed in the second sliding groove 17, a second positioning member 222 connected to the second sliding member 221 and extending out of the second moving hole 18 in the Z-axis direction, a second stopper 223 connected to the support plate 19, and a second elastic member 224 abutting against the second stopper 223. The second sliding member 221 abuts against the lower side of the first sliding member 211. The second sliding member 221 is provided with a second elongated hole 2211. The second stopper 223 is inserted into the second elongated hole 2211. One end of the second elastic member 224 away from the second stopper 223 abuts against the side wall of the second elongated hole 2211 away from the second positioning member 222. The second elastic member 224 pushes the second sliding member 221 to move in the Y-axis direction, thereby driving the second positioning member 222 to move in the Y-axis direction to abut against the workpiece 200. The second sliding member 221 is a plate-like structure, the second stopper 223 is a block-like structure, and the second elastic member 224 is a spring.

[0040] The groove 2112 on the first sliding member 211 is opened on the side close to the second positioning member 222. One end of the second sliding member 221 where the second positioning member 222 is further provided is provided with a protrusion 2212 adapted to the groove 2112. When the first positioning member 212 abuts against the workpiece 200, the groove 2112 and the protrusion 2212 are opposite to each other, the protrusion 2212 abuts against the groove 2112, and the second positioning member 222 abuts against the workpiece 200. When the first positioning member 212 moves away from the workpiece 200, the groove 2112 moves away from the protrusion 2212 in the X-axis direction, and the groove wall of the groove 2112 pushes the protrusion 2212 to move in the opposite direction of the Y-axis direction, thereby moving the second positioning member 222 away from the workpiece 200. The groove 2112 is a V-shaped groove with an opening facing the protrusion 2212, and the protrusion 2212 is a V-shape adapted to the groove 2112. Thus, when the first sliding member 211 moves in the X-axis direction, the side wall of the groove 2112 can push the protrusion 2212 to move in the Y-axis direction.

[0041] Please refer to Figure 8 together. The linkage component 23 is connected to the first positioning component 21. The linkage component 23 is used to drive the first positioning component 21 to approach or move away from the workpiece 200. The first positioning component 21 drives the second positioning component 22 to approach or move away from the workpiece 200, thereby enabling the first positioning component 21 and the second positioning component 22 to abut against or release the workpiece 200.

[0042] The linkage component 23 includes a rotating shaft 231 rotatably connected to the base 10 and a driving handle 232 connected to one end of the rotating shaft 231 away from the base 10. The rotating shaft 231 is arranged at one end of the base 10 and abuts against one end of the first sliding member 211 away from the first positioning member 212. An eccentric portion 2311 is provided at a position of the rotating shaft 231 opposite to the first sliding member 211 in the Z-axis direction. The driving handle 232 drives the rotating shaft 231 to rotate, and then the first sliding member 211 is pushed by the eccentric portion 2311 to move in the opposite direction of the X-axis, so that the first positioning member 212 moves away from the workpiece 200. The rotating shaft 231 has a cylindrical structure, and the driving handle 232 has an L-shaped structure. By rotating the driving handle 232, the rotating shaft 231 can be driven to rotate, and then the eccentric portion 2311 rotates around the axis of the rotating shaft 231.

[0043] In this embodiment, the eccentric portion 2311 has a side close to the axis of the rotating shaft 231 and a side far from the axis of the rotating shaft 231. When the first sliding member 211 abuts against the side of the eccentric portion 2311 close to the axis of the rotating shaft 231, the first elastic member 214 pushes the first sliding member 211 to move in the X-axis direction, and then drives the first positioning member 212 to abut against the workpiece 200. At this time, the groove 2112 on the first sliding member 211 and the protrusion 2212 on the second sliding member 221 are opposite to each other in the Y-axis direction. The second elastic member 224 drives the second sliding member 221 to move in the Y-axis direction, and the protrusion 2212 abuts in the groove 2112. The second sliding member 221 drives the second positioning member 222 to abut against the workpiece 200. When the first sliding member 211 abuts against the side of the eccentric portion 2311 far from the axis of the rotating shaft 231, the eccentric portion 2311 pushes the first sliding member 211 to move in the opposite direction of the X-axis, so that the first positioning member 212 moves away from the workpiece 200 to release the workpiece 200. The first sliding member 211 pushes the protrusion 2212 through the side wall of the groove 2112, and then drives the second sliding member 221 to move in the opposite direction of the Y-axis, so that the second positioning member 222 moves away from the workpiece 200 to release the workpiece 200.

[0044] The two limit pins 13 are arranged on both sides of the rotating shaft 231 in the Y-axis direction. When the driving handle 232 rotates, it abuts against the limit pins 13, so that the limit pins 13 limit the driving handle 232.

[0045] The blank holding mechanism 30 is rotatably connected to the base 10. The blank holding mechanism 30 includes a guide member 31 extending along the Z-axis direction and rotatably connected to the base 10, a blank holding member 32 slidably connected to the guide member 31 along the Z-axis direction, and a blank holding handle 33 rotatably connected to the guide member 31. The blank holding member 32 is provided with an avoidance hole 321 extending along the Z-axis direction, and the avoidance hole 321 corresponds to the part to be detected of the workpiece 200. The blank holding handle 33 abuts against the side of the blank holding member 32 away from the base 10. An eccentric convex portion 331 is provided at one end of the blank holding handle 33 connected to the guide member 31. The blank holding member 32 can be rotated along the axis of the guide member 31 to above the positioning table 11 and hold the workpiece 200 on the positioning table 11 under the drive of the blank holding handle 33, thereby positioning the workpiece 200 in the Z-axis direction. The blank holding handle 33 can push the blank holding member 32 to move towards the workpiece 200 through the eccentric convex portion 331, so that the blank holding member 32 holds the workpiece 200.

[0046] Please refer to Figure 1 , Figure 3 and Figure 9 , the blank holding mechanism 30 further includes a third elastic member 34 sleeved on the guide member 31. Two ends of the third elastic member 34 respectively abut against the base 10 and the blank holding member 32. The third elastic member 34 pushes the blank holding member 32 to abut against the blank holding handle 33. The third elastic member 34 is a spring.

[0047] The center of the arc-shaped groove 14 on the base 10 coincides with the axis of the guide member 31. A guide pin 35 is provided on the side of the blank holding member 32 facing the base 10. One end of the guide pin 35 away from the blank holding member 32 is slidably arranged in the arc-shaped groove 14.

[0048] The blank holding mechanism 30 further includes a flexible member 36 connected to the blank holding member 32. The flexible member 36 is arranged on the side where the blank holding member 32 holds the workpiece 200. The flexible member 36 is used to flexibly abut against the workpiece 200. In this embodiment, the flexible member 36 is provided with a through hole corresponding to the avoidance hole 321 to avoid the detection position of the workpiece 200. The material of the flexible member 36 is urethane rubber. By providing the flexible member 36, the workpiece 200 can be contacted flexibly, and the workpiece 200 can be prevented from being damaged by the blank holding member 32.

[0049] The positioning device 100 provided by the embodiment of the present application can support the workpiece 200 through the positioning table 11 on the base 10. The first positioning component 21 in the positioning mechanism 20 pushes the workpiece 200 against the corresponding positioning block 12 to position the workpiece 200 in the X-axis direction. The second positioning component 22 pushes the workpiece 200 against the corresponding positioning block 12 to position the workpiece 200 in the Y-axis direction. In this way, the positioning mechanism 20 can position the workpiece 200 on the horizontal plane. The pressing member 32 in the pressing mechanism 30 can rotate along the axis of the guiding member 31 to above the positioning table 11 and correspond to the workpiece 200 in the Z-axis direction. The pressing handle 33 can drive the pressing member 32 to move towards the workpiece 200, thereby pressing the workpiece 200 on the positioning table 11 and completing the positioning of the workpiece 200 in the Z-axis direction. The positioning device 100 provided by the embodiment of the present application can position the workpiece 200 in three-dimensional space through the cooperation of the positioning mechanism 20 and the pressing mechanism 30, with high positioning stability. The avoidance hole 321 on the pressing member 32 in the pressing mechanism 30 can avoid the part to be detected of the workpiece 200, facilitating the detection of the workpiece 200.

[0050] The working process of the positioning device 100 provided by the embodiment of the present application is generally as follows:

[0051] First, place the workpiece 200 on the positioning table 11, then rotate the driving handle 232, which drives the rotating shaft 231 to rotate, so that the surface of the eccentric part 2311 close to the axis of the rotating shaft 231 faces the first sliding member 211. The first elastic member 214 pushes the first sliding member 211 to move along the X-axis direction, driving the first positioning member 212 to hold the workpiece 200. At this time, the groove 2112 on the first sliding member 211 is opposite to the protrusion 2212 on the second sliding member 221 in the Y-axis direction. The second elastic member 224 drives the second sliding member 221 to move along the Y-axis direction, and the protrusion 2212 abuts in the groove 2112. The second sliding member 221 drives the second positioning member 222 to hold the workpiece 200, thus completing the positioning of the workpiece 200 in the X-Y plane.

[0052] Then rotate the pressing handle 33 counterclockwise around the Z-axis direction. The pressing handle 33 drives the guiding member 31 to rotate around the Z-axis, and the guiding member 31 drives the pressing member 32 to rotate around the Z-axis until the guiding pin 35 abuts against the end of the arc-shaped groove 14. At this time, the pressing member 32 corresponds to the workpiece 200 in the Z-axis direction. Then rotate the pressing handle 33 so that the eccentric protrusion of the pressing handle 33 pushes the pressing member 32 to move towards the workpiece 200, so that the flexible member 36 on the pressing member 32 abuts against the workpiece 200, thus completing the positioning of the workpiece 200 in the Z-axis direction.

[0053] When it is necessary to release the workpiece 200, first rotate the pressure holding handle 33. The third elastic member 34 pushes the pressure holding member 32 to move along the Z-axis direction. The flexible member 36 on the pressure holding member 32 moves away from the workpiece 200. Then rotate the pressure holding handle 33 clockwise around the Z-axis direction. The pressure holding handle 33 drives the guiding member 31 to rotate around the Z-axis. The guiding member 31 drives the pressure holding member 32 to rotate around the Z-axis until the guiding pin 35 abuts against the end of the arc-shaped groove 14. At this time, the pressure holding member 32 moves away from the workpiece 200.

[0054] Then rotate the driving handle 232, which in turn drives the rotating shaft 231 to rotate, so that the surface of the eccentric portion 2311 away from the axis of the rotating shaft 231 faces the first sliding member 211. The eccentric portion 2311 pushes the first sliding member 211 to move in the opposite direction along the X-axis direction, and then the first positioning member 212 moves away from the workpiece 200 to release the workpiece 200. The first sliding member 211 pushes the protrusion 2212 through the side wall of the groove 2112, and then drives the second sliding member 221 to move in the opposite direction along the Y-axis direction, so that the second positioning member 222 moves away from the workpiece 200 to release the workpiece 200.

[0055] For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present application, the present application can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present application is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and not to limit them. Although the present application has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A positioning device, characterized in that, include: The base is provided with a positioning platform for carrying a workpiece and a plurality of positioning blocks arranged near two adjacent sides of the positioning platform; A positioning mechanism is movably arranged on the base, the positioning mechanism includes a first positioning component, a second positioning component and a linkage component arranged on the base, the first positioning component is arranged along a first direction and corresponds to the positioning block on one side of the positioning platform, the second positioning component is arranged along a second direction and corresponds to the positioning block on the other side of the positioning platform, the first positioning component and the second positioning component are used to hold the workpiece against the corresponding positioning block to position the workpiece on a horizontal plane, the linkage component is connected to the first positioning component, the linkage component is used to drive the first positioning component to approach or move away from the workpiece, and the first positioning component drives the second positioning component to approach or move away from the workpiece, thereby causing the first positioning component and the second positioning component to hold or release the workpiece; and The pressing mechanism is rotatably connected to the base, and the pressing mechanism includes a guide member extending along a third direction and rotatably connected to the base, a pressing member slidably connected to the guide member along the third direction, and a pressing handle rotatably connected to the guide member, the pressing member is provided with a avoidance hole extending along the third direction, the avoidance hole corresponds to the part of the workpiece to be detected, the pressing handle abuts against the side of the pressing member away from the base, the pressing member can be rotated along the axis of the guide member to above the positioning platform, and under the drive of the pressing handle, press the workpiece on the positioning platform, thereby positioning the workpiece in the third direction; wherein, The first direction, the second direction, and the third direction are perpendicular to each other.

2. The positioning device according to claim 1, wherein A first sliding groove extending along the first direction and a first movable hole communicating with the first sliding groove are formed on a side of the base away from the positioning platform, and the first movable hole is arranged close to the positioning platform; A support plate covering the first sliding groove is further provided on a side of the base facing away from the positioning platform; The first positioning assembly includes a first sliding member slidably arranged in the first sliding groove, a first positioning member connected to the first sliding member and extending out of the first movable hole along the third direction, a first stop member connected to the support plate and a first elastic member abutting against the first stop member, the first sliding member is provided with a first strip hole, the first stop member is inserted into the first strip hole, the end of the first elastic member away from the first stop member abuts against the side wall of the first strip hole away from the first positioning member, the first elastic member pushes the first sliding member to move along the first direction, and then drives the first positioning member to move along the first direction to abut against the workpiece.

3. The positioning device according to claim 2, wherein: The base is further provided with a second sliding groove extending along the second direction and a second movable hole connected to the second sliding groove on a side away from the positioning platform. The second sliding groove is cross-connected with the first sliding groove, and the second movable hole is arranged close to the positioning platform. The second positioning assembly includes a second sliding member slidably arranged in the second sliding groove, a second positioning member connected to the second sliding member and extending out of the second movable hole along the third direction, a second stop member connected to the support plate and a second elastic member abutting the second stop member, the second sliding member abuts the lower side of the first sliding member, the second sliding member is provided with a second strip hole, the second stop member is inserted into the second strip hole, the end of the second elastic member away from the second stop abuts the side wall of the second strip hole away from the second positioning member, the second elastic member pushes the second sliding member to move along the second direction, and then drives the second positioning member to move along the second direction to abut the workpiece.

4. The positioning device according to claim 3, wherein: A groove is provided on one side of the first sliding member close to the second positioning member, and the second sliding member is provided with a protrusion that is adapted to the groove at one end of the second positioning member. When the first positioning member abuts against the workpiece, the groove is opposite to the protrusion, and the protrusion abuts against the groove. The second positioning member abuts against the workpiece. When the first positioning member moves away from the workpiece, the groove moves away from the protrusion in the first direction, and the groove wall pushes the protrusion to move in the opposite direction of the second direction, thereby moving the second positioning member away from the workpiece.

5. The positioning device according to claim 4, characterized in that The linkage assembly includes a rotating shaft rotatably connected to the base and a driving handle connected to the end of the rotating shaft away from the base. The rotating shaft is provided at one end of the base and abuts against the end of the first sliding member away from the first positioning member, and the rotating shaft is provided with an eccentric portion at a position opposite to the first sliding member in the third direction. The driving handle drives the rotating shaft to rotate, and then pushes the first sliding member to move in the opposite direction of the first direction through the eccentric portion, so that the first positioning member is away from the workpiece.

6. The positioning device according to claim 5, characterized in that Two limit pins are also provided on one side of the base where the positioning platform is provided. The two limit pins are provided on both sides of the rotating shaft in the second direction. When the driving handle rotates, it abuts against the limit pins so that the limit pins limit the driving handle.

7. The positioning device according to claim 1, wherein: The pressing mechanism further includes a third elastic member sleeved on the guide member, wherein two ends of the third elastic member respectively abut against the base and the pressing member, and the third elastic member pushes the pressing member to abut against the pressing handle.

8. The positioning device according to claim 1, wherein: An arc-shaped groove centered on the axis of the guiding member is provided on one side of the base facing the pressing member, and a guiding pin is provided on one side of the pressing member facing the base. The end of the guiding pin away from the pressing member is slidably disposed in the arc-shaped groove.

9. The positioning device according to claim 1, wherein An eccentric convex portion is provided at one end of the pressing handle connected to the guiding member. The pressing handle can push the pressing member to move towards the workpiece through the eccentric convex portion, so that the pressing member presses the workpiece.

10. The positioning device according to claim 1, wherein The pressing mechanism further includes a flexible member connected to the pressing member. The flexible member is disposed on one side of the pressing member for pressing the workpiece, and the flexible member is used for flexibly abutting against the workpiece.

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