Positioning jig

Abstract

The utility model provides a positioning jig. The positioning jig comprises a support; the supporting mechanism comprises a first supporting frame and a second supporting frame which are installed on the support, the first supporting frame surrounds the outer side of the second supporting frame, the first supporting frame is higher than the second supporting frame, the first supporting frame is used for supporting a first product, and the second supporting frame is used for supporting a second product; the suction mechanism comprises a jacking driving part and an air suction disc, the jacking driving part is installed on the support, the air suction disc is located on the inner side of the second supporting frame and connected with the jacking driving part, and the jacking driving part is used for driving the air suction disc to ascend or descend, so that the air suction disc sucks the first product or the second product; the positioning mechanism comprises two positioning assemblies, and the two positioning assemblies can penetrate through the first product or the second product; and the adjusting mechanism is installed on the support and used for driving the two positioning assemblies to get close to each other or get away from each other so as to adjust the positioning distance between the two positioning assemblies. The jig is suitable for positioning products of different sizes, and the utilization rate of the jig is increased.

Description

Technical Field

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

[0002] Since the sizes and structures of different products are different, the traditional fixture development concept is to develop a set of corresponding positioning fixtures for one product, which has high production costs and low utilization rates. During the production process, when producing different products, it is necessary to switch to the corresponding positioning fixtures, resulting in long production time and low production efficiency. Utility Model Content

[0003] In view of the above, the present application provides a positioning jig to solve the problem that the traditional positioning jig can only be used for positioning one product, has low utilization rate and high production cost.

[0004] The embodiment of the present application provides a positioning fixture, comprising: a bracket; a supporting mechanism, comprising a first supporting frame and a second supporting frame, wherein the first supporting frame and the second supporting frame are installed on the bracket, the first supporting frame surrounds the outer side of the second supporting frame, the height of the first supporting frame is greater than the height of the second supporting frame, the first supporting frame is used to support a first product, and the second supporting frame is used to support a second product; a suction mechanism, comprising a lifting drive and a suction disk, the lifting drive is installed on the bracket, the suction disk is located on the inner side of the second supporting frame and connected to the lifting drive, the lifting drive is used to drive the suction disk to rise or fall, so that the suction disk absorbs the first product or the second product; a positioning mechanism, comprising at least two positioning components, the two positioning components can pass through the first product or the second product to achieve positioning of the first product or the second product; an adjusting mechanism, installed on the bracket, the adjusting mechanism connects the two positioning components, and the adjusting mechanism is used to drive the two positioning components to move closer to or away from each other to adjust the positioning spacing of the two positioning components.

[0005] In the present application, the first and second products can be supported separately by the first support frame and the second support frame in a layered manner, solving the problem that the curved surfaces on the first and second products need contoured support; the suction of the first and second products is achieved by driving the suction plate up and down by the jacking drive, solving the problem of fixing the first and second products; the positioning spacing of the two positioning components is adjusted by the adjustment mechanism, solving the problem of different positioning spacings of the first and second products. Based on this, the present application is suitable for the positioning of products of different sizes, improves the utilization rate and practicality of the positioning fixture, and reduces production costs.

[0006] In one embodiment, the positioning assembly includes: a sleeve installed on the adjustment mechanism, a plurality of baffles are provided on the outer side of the sleeve; a guide column installed in the sleeve, a cone head is provided on the end of the guide column; a plurality of positioning pins, a movable base is provided at the bottom of each positioning pin, an arc groove is provided on the inner wall of each movable base, a plurality of movable bases are arranged around the cone head, the arc grooves of each movable base are connected to form a conical through hole, the conical through hole is adapted to the cone head, and the aperture of the conical through hole is arranged from large to small in the direction from the guide column to the positioning pin; a plurality of first elastic members, the movable base is connected to the baffle through the first elastic member, and the movable base is movable relative to the baffle; a telescopic driving member is installed in the sleeve and connected to the guide column, the telescopic driving member is used to drive the guide column to rise or fall relative to the movable base to adjust the positioning The positioning aperture of the component; wherein, when the telescopic driving member drives the guide column to rise along the first direction, the guide column drives the cone head to extend out of the conical through hole, so that the cone head resists and pushes the surrounding multiple movable bases to expand outward, and then the multiple movable bases respectively drive the corresponding positioning pins to expand outward, thereby expanding the positioning aperture of the positioning component. At the same time, each of the movable bases respectively presses the corresponding first elastic member, so that the first elastic member remains in a compressed state, and the telescopic driving member drives the guide column to descend along the first direction, so that the cone head is accommodated in the conical through hole, and the resisting effect of the cone head on the surrounding multiple movable bases disappears, and then the resisting effect of each movable base on the first elastic member disappears, so that the first elastic member in the compressed state pushes the corresponding movable base to close inward under the action of the restoring force, thereby reducing the positioning aperture of the positioning component.

[0007] In one embodiment, the positioning assembly further includes: a linear bearing, which is sleeved on the guide column and installed in the sleeve.

[0008] In one embodiment, the positioning assembly further includes: a second elastic member, which is sleeved on the guide column, and a bottom plate is provided at the bottom of the guide column, and the second elastic member abuts against the linear bearing and the bottom plate respectively.

[0009] In one embodiment, both the first elastic member and the second elastic member are compression springs.

[0010] In one embodiment, the positioning assembly also includes: a plurality of first wire gauges, the sleeve includes a cover plate, the cover plate is sleeved on the plurality of positioning pins, the cover plate has a plurality of first guide plates extending outwardly, the movable base has a plurality of second guide plates extending outwardly, the second guide plates are slidably connected to the corresponding first guide plates through the first wire gauges, so that the movable base can slide relative to the cover plate.

[0011] In one embodiment, the movable base is provided with a mounting groove, and the mounting groove is used for placing the first elastic member.

[0012] In one embodiment, the adjustment mechanism includes: an adjustment drive member installed on the bracket; a connecting rod assembly connected to the adjustment drive member, and the two positioning assemblies are respectively installed at both ends of the connecting rod assembly, and the adjustment drive member is used to drive the two positioning assemblies to move closer to or away from each other through the connecting rod assembly.

[0013] In one embodiment, the connecting rod assembly includes: a linkage plate connected to the adjusting drive member; two first connecting rods, respectively hinged on both sides of the linkage plate; two second connecting rods, respectively hinged to the two first connecting rods, and the two positioning assemblies are respectively installed on the ends of the two second connecting rods.

[0014] In one embodiment, the bracket includes a bearing frame, and the connecting rod assembly further includes: a plurality of second wire gauges, and the linkage plate and the two second connecting rods are slidably connected to the bearing frame via the second wire gauges. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 for Figure 1 Schematic diagram of the positioning fixture structure shown.

[0017] Figure 3 for Figure 1 Schematic diagram of the exploded structure of the positioning fixture shown.

[0018] Figure 4 for Figure 1 The structural schematic diagram of the positioning component is shown.

[0019] Figure 5 for Figure 4 The cross-sectional structural schematic diagram of the positioning assembly along VV is shown.

[0020] Figure 6 for Figure 4 Schematic diagram of the exploded structure of the positioning component shown.

[0021] Figure 7 for Figure 4 A schematic diagram of a state of the positioning component shown.

[0022] Figure 8 for Figure 1 The structural schematic diagram of the positioning fixture is shown.

[0023] Main component symbols

[0024] Positioning fixture 100

[0025] Bracket 10

[0026] Fixed plate 11

[0027] Activity board 12

[0028] Carrying frame 13

[0029] Guide column 14

[0030] The first support frame 15

[0031] The second support frame 16

[0032] Carrier 17

[0033] Support mechanism 20

[0034] The first support frame 21

[0035] First Product 211

[0036] The second support frame 22

[0037] Second product 221

[0038] Suction mechanism 30

[0039] Lifting drive 31

[0040] Suction disc 32

[0041] Loading plate 33

[0042] Trachea 34

[0043] Positioning mechanism 40

[0044] Positioning component 41

[0045] Sleeve 42

[0046] Cover 421

[0047] First guide plate 422

[0048] Guide column 43

[0049] Cone head 431

[0050] Bottom plate 432

[0051] Positioning pin 44

[0052] Active base 441

[0053] Arc groove 442

[0054] Conical through hole 443

[0055] Second guide plate 444

[0056] Mounting slot 445

[0057] The first elastic member 45

[0058] Baffle 451

[0059] Telescopic drive 46

[0060] Linear bearing 47

[0061] The second elastic member 48

[0062] First wire gauge 49

[0063] Adjustment mechanism 50

[0064] Adjustment drive 51

[0065] Connecting rod assembly 52

[0066] Linkage plate 53

[0067] First connecting rod 54

[0068] Second connecting rod 55

[0069] Carrying arm 551

[0070] Second wire gauge 56

[0071] First direction Z

[0072] Second direction Y

[0073] The third direction X DETAILED DESCRIPTION

[0074] 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.

[0075] In the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, words such as "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "for example" is intended to present related concepts in a specific way.

[0076] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0077] In the description of the present application, it should be noted that, unless otherwise expressly specified and limited, 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 technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In addition, in the description of the present application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically limited.

[0078] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0079] The traditional jig development concept is to develop a set of positioning jigs for one product, which has high production costs and low utilization rates. During the production process, when producing different products, the positioning jigs need to be switched, wasting a lot of production time and low production efficiency.

[0080] In view of the above, the present application provides a positioning jig to solve the problem that the traditional positioning jig can only be used for positioning one product, has low utilization rate and high production cost.

[0081] See also Figure 1 , is a schematic diagram of the structure of the positioning fixture 100 provided in an embodiment of the present application.

[0082] In one embodiment, the positioning fixture 100 includes a bracket 10, a supporting mechanism 20, a suction mechanism 30, a positioning mechanism 40, and an adjustment mechanism 50. Figure 2 As shown, the support mechanism 20 includes a first support frame 21 and a second support frame 22. The first support frame 21 and the second support frame 22 are installed on the bracket 10, and the first support frame 21 surrounds the outer side of the second support frame 22. The height of the first support frame 21 is greater than the height of the second support frame 22. Figure 3 As shown, the first support frame 21 is used to support the first product 211, and the second support frame 22 is used to support the second product 221. Figure 2As shown, the suction mechanism 30 includes a lifting drive 31 and a suction plate 32. The lifting drive 31 is installed on the bracket 10, and the suction plate 32 is located on the inner side of the second support frame 22 and connected to the lifting drive 31. The lifting drive 31 is used to drive the suction plate 32 to rise or fall along the first direction Z, so that the suction plate 32 sucks the first product 211 or the second product 221. Figure 1 As shown, the positioning mechanism 40 includes at least two positioning components 41, and the two positioning components 41 can penetrate the first product 211 or the second product 221 to achieve positioning of the first product 211 or the second product 221. Figure 1 As shown, the adjustment mechanism 50 is installed on the bracket 10 , and the adjustment mechanism 50 connects the two positioning components 41 . The adjustment mechanism 50 is used to drive the two positioning components 41 to move closer to or away from each other, so as to adjust the positioning distance between the two positioning components 41 .

[0083] In one embodiment, the first product 211 and the second product 221 are two products of different sizes, and the size of the first product 211 is larger than the size of the second product 221. For example, the size of the first product 211 is 15 inches, and the size of the second product 221 is 13 inches.

[0084] In one embodiment, the lifting driving member 31 may be a driving cylinder.

[0085] In the above embodiment, the first product 211 and the second product 221 can be supported respectively by the first support frame 21 and the second support frame 22 in a layered manner, which solves the problem that the curved surfaces on the first product 211 and the second product 221 need to be supported in a contoured manner; the first product 211 and the second product 221 are sucked by the jacking drive 31 to drive the suction plate 32 to move up and down, and the first product 211 and the second product 221 are fixed; the positioning spacing of the two positioning components 41 is adjusted by the adjustment mechanism 50, so as to adjust the positioning of the first product 211 and the second product 221. Based on this, the present application is suitable for the positioning of products of different sizes, improves the utilization rate and practicality of the positioning fixture 100, and reduces the production cost.

[0086] Combination Figure 2 and Figure 3 As shown, in one embodiment, the bracket 10 includes a fixed plate 11, a movable plate 12, a bearing frame 13, a plurality of guide posts 14, two first support frames 15, and two second support frames 16. The movable plate 12 is movably connected to the fixed plate 11 through the plurality of guide posts 14, the lifting drive member 31 is installed on the fixed plate 11, and the suction plate 32 is connected to the movable plate 12. The bearing frame 13 is fixedly connected to the fixed plate 11 through the two first support frames 15, and the first support frame 21 and the second support frame 22 are installed on the bearing frame 13.

[0087] In one embodiment, the suction mechanism 30 further includes a supporting plate 33 and a plurality of air pipes 34 . The supporting plate 33 is connected to the movable plate 12 via two second support frames 16 . The plurality of air pipes 34 are installed on the supporting plate 33 and connected to the suction disk 32 .

[0088] Combination Figure 4-Figure 7 As shown, in one embodiment, the positioning assembly 41 includes a sleeve 42, a guide post 43, a plurality of positioning pins 44, a plurality of first elastic members 45, and a telescopic driving member 46. A plurality of baffles 451 are provided on the outer side of the sleeve 42. The guide post 43 is installed in the sleeve 42, and a cone head 431 is provided at the end of the guide post 43. A movable base 441 is provided at the bottom of each positioning pin 44, and an arc groove 442 is provided on the inner wall of each movable base 441. A plurality of movable bases 441 are arranged around the cone head 431, and the arc groove 442 of each movable base 441 is connected to form a tapered through hole 443, and the tapered through hole 443 is adapted to the cone head 431, and the aperture of the tapered through hole 443 is arranged from large to small in the direction from the guide post 43 to the positioning pin 44. The movable base 441 is connected to the baffle 451 through the first elastic member 45, and the movable base 441 is movable relative to the baffle 451. The telescopic driving member 46 is installed in the sleeve 42 and connected to the guide column 43. The telescopic driving member 46 is used to drive the guide column 43 to rise or fall relative to the movable base 441 to adjust the positioning aperture of the positioning assembly 41. When the telescopic driving member 46 drives the guide column 43 to rise along the first direction Z, the guide column 43 drives the cone head 431 to extend out of the conical through hole 443, so that the cone head 431 abuts and pushes the surrounding multiple movable bases 441 to expand outward, and then the multiple movable bases 441 respectively drive the corresponding positioning pins 44 to expand outward, thereby expanding the positioning aperture of the positioning assembly 41. At this time, each movable base 441 respectively presses the corresponding first elastic member 45, so that the first elastic member 45 remains in a compressed state, and the telescopic driving member 46 drives the guide column 43 to descend along the first direction Z, so that the cone head 431 is accommodated in the conical through hole 443, and the abutting effect of the cone head 431 on the surrounding multiple movable bases 441 disappears, and then the abutting effect of each movable base 441 on the first elastic member 45 disappears, so that the first elastic member 45 in the compressed state pushes the corresponding movable base 441 to close inward under the action of the restoring force, thereby reducing the positioning aperture of the positioning assembly 41.

[0089] In one embodiment, the telescopic drive member 46 may be a drive cylinder.

[0090] In one embodiment, the end of the positioning pin 44 is a tapered structure, which is convenient for inserting into the positioning hole of the first product 211 or the second product 221 to be positioned.

[0091] In the above embodiment, the positioning apertures of the first product 211 and the second product 221 are of different sizes. The clever design of the positioning component 41 can adapt to products with different positioning apertures, thereby improving the utilization rate of the positioning component 41. In addition, when positioning different products, there is no need to replace the positioning component 41, thereby improving the positioning efficiency.

[0092] Combination Figure 5 As shown, in one embodiment, the positioning assembly 41 further includes a linear bearing 47 , which is sleeved on the guide column 43 and installed in the sleeve 42 .

[0093] In the above embodiment, the linear bearing 47 can ensure that the guide column 43 can move accurately in the expected direction, thereby improving the accuracy of the moving distance of the guide column 43. In addition, the linear bearing 47 has strong wear resistance, which can prevent wear during long-term work, thereby extending the service life of the guide column 43.

[0094] In one embodiment, the positioning assembly 41 further includes a second elastic member 48 sleeved on the guide column 43 . A bottom plate 432 is disposed at the bottom of the guide column 43 . The second elastic member 48 abuts against the linear bearing 47 and the bottom plate 432 , respectively.

[0095] In the above embodiment, by setting the second elastic member 48 between the linear bearing 47 and the base plate 432, a certain buffering effect is played during the up and down movement of the guide column 43, thereby avoiding collision between the base plate 432 and the linear bearing 47 and extending the service life of the guide column 43.

[0096] In one embodiment, the first elastic member 45 and the second elastic member 48 may both be compression springs.

[0097] Combination Figure 4-Figure 6 As shown, in one embodiment, the positioning assembly 41 further includes a plurality of first wire gauges 49. The sleeve 42 includes a cover plate 421, which is sleeved on the plurality of positioning pins 44, and the cover plate 421 has a plurality of first guide plates 422 extending outward, and the movable base 441 has a plurality of second guide plates 444 extending outward, and the second guide plates 444 are slidably connected with the corresponding first guide plates 422 through the first wire gauges 49, so that the movable base 441 can slide relative to the cover plate 421.

[0098] In the above embodiment, the sliding connection between the movable base 441 and the cover 421 is achieved through multiple first wire gauges 49, which can guide the movable base 441 to slide along a predetermined trajectory, avoid deviation or shaking, and ensure the stability and reliability of the sliding connection.

[0099] Combination Figure 6 As shown, in one embodiment, the movable base 441 is provided with a mounting groove 445 , and the mounting groove 445 is used to place the first elastic member 45 .

[0100] Combination Figure 3 and Figure 8 As shown, in one embodiment, the adjustment mechanism 50 includes an adjustment drive member 51 and a connecting rod assembly 52. ​​The adjustment drive member 51 is mounted on the bracket 10. The connecting rod assembly 52 is connected to the adjustment drive member 51. The two positioning assemblies 41 are respectively mounted at both ends of the connecting rod assembly 52. ​​The adjustment drive member 51 is used to drive the two positioning assemblies 41 to move closer to each other or away from each other through the connecting rod assembly 52.

[0101] In one embodiment, the adjustment driving member 51 may be a driving cylinder.

[0102] In one embodiment, the connecting rod assembly 52 includes a linkage plate 53, two first connecting rods 54, and two second connecting rods 55. The linkage plate 53 is connected to the adjustment driving member 51. The two first connecting rods 54 are respectively hinged to the two sides of the linkage plate 53. The two second connecting rods 55 are respectively hinged to the two first connecting rods 54. The two positioning assemblies 41 are respectively installed at the ends of the two second connecting rods 55.

[0103] In one embodiment, the ends of the two second connecting rods 55 are provided with bearing arms 551 , and the two positioning assemblies 41 are respectively mounted on the bearing arms 551 at the ends of the two second connecting rods 55 .

[0104] In one embodiment, the bracket 10 includes a carrier frame 17, and the connecting rod assembly 52 further includes a plurality of second wire gauges 56. The linkage plate 53 and the two second connecting rods 55 are slidably connected to the carrier frame 17 through the second wire gauges 56.

[0105] In the above embodiment, when the adjusting driving member 51 drives the linkage plate 53 to extend out of the carrier 17 along the second direction Y, the two first connecting rods 54 drive the two second connecting rods 55 to approach the linkage plate 53 along the third direction X, thereby reducing the spacing between the two positioning components 41, thereby shortening the positioning interval between the two positioning components 41. When the adjusting driving member 51 drives the linkage plate 53 to retract to the carrier 17 along the second direction Y, the two first connecting rods 54 drive the two second connecting rods 55 to move away from the linkage plate 53 along the third direction X, thereby increasing the spacing between the two positioning components 41, thereby increasing the positioning interval between the two positioning components 41. Based on this, the positioning interval between the two positioning components 41 is adjusted to achieve positioning of products with different positioning intervals.

[0106] 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.

[0107] 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 fixture, characterized in that: include: Bracket; The support mechanism comprises a first support frame and a second support frame, wherein the first support frame and the second support frame are installed on the bracket, the first support frame surrounds the outer side of the second support frame, the height of the first support frame is greater than the height of the second support frame, the first support frame is used to support the first product, and the second support frame is used to support the second product; The suction mechanism includes a lifting driving member and a suction plate, wherein the lifting driving member is installed on the bracket, the suction plate is located on the inner side of the second support frame and connected to the lifting driving member, and the lifting driving member is used to drive the suction plate to rise or fall, so that the suction plate absorbs the first product or the second product; A positioning mechanism, comprising at least two positioning components, wherein the two positioning components can penetrate the first product or the second product to achieve positioning of the first product or the second product; An adjusting mechanism is installed on the bracket, the adjusting mechanism connects the two positioning components, and is used to drive the two positioning components to move closer to or away from each other to adjust the positioning distance between the two positioning components.

2. The positioning fixture according to claim 1, characterized in that: The positioning component comprises: A sleeve, mounted on the adjustment mechanism, with a plurality of baffles disposed on the outer side of the sleeve; A guide post is installed in the sleeve, and a cone head is provided at the end of the guide post; A plurality of positioning pins, each positioning pin is provided with a movable base at the bottom, each movable base is provided with an arc groove on the inner wall, the plurality of movable bases are arranged around the cone head, the arc grooves of each movable base are connected to form a tapered through hole, the tapered through hole is adapted to the cone head, and the aperture of the tapered through hole is arranged from large to small in the direction from the guide column to the positioning pin; A plurality of first elastic members, the movable base is connected to the baffle through the first elastic members, and the movable base is movable relative to the baffle; a telescopic driving member, installed in the sleeve and connected to the guide column, the telescopic driving member being used to drive the guide column to rise or fall relative to the movable base to adjust the positioning aperture of the positioning assembly; Among them, when the telescopic driving member drives the guide column to rise along the first direction, the guide column drives the cone head to extend out of the conical through hole, so that the cone head resists and pushes the surrounding multiple movable bases to expand outward, and then the multiple movable bases respectively drive the corresponding positioning pins to expand outward, thereby expanding the positioning aperture of the positioning assembly. At the same time, each of the movable bases respectively presses the corresponding first elastic member, so that the first elastic member remains in a compressed state. The telescopic driving member drives the guide column to descend along the first direction, so that the cone head is accommodated in the conical through hole, and the resisting effect of the cone head on the surrounding multiple movable bases disappears, and then the resisting effect of each movable base on the first elastic member disappears, so that the first elastic member in the compressed state pushes the corresponding movable base to close inward under the action of the restoring force, thereby reducing the positioning aperture of the positioning assembly.

3. The positioning fixture according to claim 2, characterized in that: The positioning component also includes: A linear bearing is sleeved on the guide column and installed in the sleeve.

4. The positioning fixture according to claim 3, characterized in that: The positioning component also includes: The second elastic member is sleeved on the guide column. A bottom plate is provided at the bottom of the guide column. The second elastic member abuts against the linear bearing and the bottom plate respectively.

5. The positioning fixture according to claim 4, characterized in that: The first elastic member and the second elastic member are both compression springs.

6. The positioning fixture according to claim 2, characterized in that: The positioning component also includes: Multiple first wire gauges, the sleeve includes a cover plate, the cover plate is sleeved on the multiple positioning pins, the cover plate has multiple first guide plates extending outward, the movable base has multiple second guide plates extending outward, the second guide plates are slidably connected with the corresponding first guide plates through the first wire gauges, so that the movable base can slide relative to the cover plate.

7. The positioning fixture according to claim 2, characterized in that: The movable base is provided with a mounting groove, and the mounting groove is used for placing the first elastic member.

8. The positioning fixture according to claim 1, characterized in that: The regulating mechanism comprises: An adjusting driving member is mounted on the bracket; The connecting rod assembly is connected to the adjusting driving member, and the two positioning assemblies are respectively installed at both ends of the connecting rod assembly. The adjusting driving member is used to drive the two positioning assemblies to move closer to or away from each other through the connecting rod assembly.

9. The positioning fixture according to claim 8, characterized in that: The connecting rod assembly comprises: A linkage plate connected to the adjustment drive member; Two first connecting rods are respectively hinged to two sides of the linkage plate; The two second connecting rods are respectively hinged to the two first connecting rods, and the two positioning assemblies are respectively installed on the ends of the two second connecting rods.

10. The positioning fixture according to claim 9, characterized in that: The bracket includes a bearing frame, and the connecting rod assembly also includes: A plurality of second wire gauges, the linkage plate and the two second connecting rods are slidably connected to the supporting frame through the second wire gauges.

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