CN219854110U - Positioning jig - Google Patents

Abstract

The utility model discloses a positioning jig which is used for positioning and correcting a workpiece and comprises a base, a positioning assembly, two correction shifting blocks, two connecting rods and a moving block, wherein the positioning assembly is used for positioning the workpiece; the positioning component is arranged on the base and is used for movably clamping the workpiece; the two correction shifting blocks are oppositely arranged, one ends of the two correction shifting blocks are rotationally connected with the base, and the other ends of the two correction shifting blocks extend towards two sides of the positioning assembly respectively; the two connecting rods are oppositely arranged, and one ends of the two connecting rods are respectively and rotatably connected with the two correction shifting blocks; the movable block is arranged on the base in a sliding manner and is connected with the other ends of the two connecting rods, and drives the two correction shifting blocks to rotate through the two connecting rods so as to achieve mutual approaching or separating, so that the two correction shifting blocks are used for correcting the workpiece when approaching to each other. The positioning jig can improve the accuracy of correcting the workpiece and reduce the damage to the workpiece.

Description

Positioning jig

Technical Field

The utility model relates to the technical field of product detection jigs, in particular to a positioning jig.

Background

At present, when the structural characteristics of small workpieces such as earphone parts are required to be detected, the small workpieces are usually placed on a jig to be positioned, then the small workpieces are manually shifted to be corrected on two sides of the small workpieces, and finally the jig is placed on detection equipment to detect the structural characteristics of the small workpieces. However, the subjective factor of the way of manually poking the small workpiece to correct the small workpiece has a large influence, so that the accuracy of correcting the small workpiece is influenced, and the accuracy of detecting the structural characteristics of the small workpiece by the detection equipment is further influenced. In addition, because the structural strength of the small workpiece is lower, the small workpiece is easy to damage due to uneven force application when the small workpiece is manually stirred.

Disclosure of Invention

In view of the foregoing, it is necessary to provide a positioning fixture to improve the accuracy of correcting the workpiece and reduce the damage to the workpiece.

The embodiment of the utility model provides a positioning jig which is used for positioning and correcting a workpiece and comprises a base, a positioning assembly, two correction shifting blocks, two connecting rods and a moving block, wherein the positioning assembly is used for positioning and correcting the workpiece; the positioning component is arranged on the base and is used for movably clamping the workpiece; the two correction shifting blocks are oppositely arranged, one ends of the two correction shifting blocks are rotationally connected with the base, and the other ends of the two correction shifting blocks extend towards two sides of the positioning assembly respectively; the two connecting rods are oppositely arranged, and one ends of the two connecting rods are respectively and rotatably connected with the two correction shifting blocks; the movable block is arranged on the base in a sliding manner and is connected with the other ends of the two connecting rods, and the movable block drives the two correction shifting blocks to rotate through the two connecting rods so as to achieve mutual approaching or separating, so that the two correction shifting blocks are aligned with the workpiece when approaching to each other.

The positioning jig is movably clamped with the workpiece through the positioning assembly, so that the workpiece can be initially positioned at the position on the positioning jig. The two connecting rods are driven to move through the moving block, so that the two correction shifting blocks are mutually close to each other under the driving of the two connecting rods to apply the same shifting force to correct the workpiece, the function of automatically correcting the workpiece is realized, the influence of human factors on correcting the workpiece is avoided, the accuracy of correcting the workpiece is improved, and the accuracy of detecting the characteristic structure of the workpiece by the detection device is further improved. In addition, the force of the two correction shifting blocks for shifting the workpiece can be controlled by the moving block through the two connecting rods, and the shifting force applied to the workpiece by the two correction shifting blocks is uniform, so that the damage to the workpiece can be effectively reduced.

In some embodiments, two sides of the correction shifting blocks far away from each other are provided with abutting grooves, the abutting grooves are communicated with one sides of the corresponding correction shifting blocks, each abutting groove comprises a groove bottom and an arc-shaped wall, one end of each connecting rod is respectively in rotary connection with the corresponding groove bottom of each abutting groove, and each arc-shaped wall is formed by concavely arranging one side of the corresponding correction shifting block inwards.

In some embodiments, the base is provided with a guide groove extending towards the positioning assembly, and the moving block is slidably arranged in the guide groove.

In some embodiments, two opposite groove walls of the guide groove are respectively provided with a stop groove, two sides of the moving block are provided with stop parts matched with the corresponding stop grooves, and the stop grooves are matched with the stop parts to limit the moving block from being separated from the guide groove.

In some embodiments, the positioning fixture further comprises a cover plate, wherein the cover plate covers the guide groove and is connected with the base, and the cover plate is used for stopping the moving block in the guide groove.

In some embodiments, a first accommodating groove is formed in a side wall, facing the cover plate, of the moving block, and a second accommodating groove opposite to the first accommodating groove is formed in a side wall, facing the moving block, of the cover plate; the positioning jig further comprises a pressing elastic piece, one part of the pressing elastic piece is arranged in the first accommodating groove, the other part of the pressing elastic piece is arranged in the second accommodating groove, and the pressing elastic piece is used for driving the moving block to slide in the direction away from the positioning assembly, so that the moving block drives the two correction shifting blocks to be away from each other through the two connecting rods.

In some embodiments, the positioning jig further comprises a positioning pin, and the positioning pin is inserted into one side of the moving block facing the cover plate; and the cover plate is provided with a limit groove, and the limit groove is used for stopping the positioning pin so as to limit the distance that the pressing elastic piece drives the moving block to slide towards the direction deviating from the positioning assembly.

In some embodiments, the positioning assembly includes a positioning block, a compression block, and a return spring; the positioning block is arranged on the base and positioned between the other ends of the two correction shifting blocks, and is used for supporting the workpiece; the compressing block is arranged on the base in a sliding manner and is positioned on one side, away from the correction shifting block, of the positioning block; one end of the reset elastic piece is abutted with one side, far away from the positioning block, of the compression block, the other end of the reset elastic piece is abutted to the base, and the reset elastic piece is used for driving the compression block to move towards the positioning block so that the compression block stops the workpiece on the positioning block.

In some embodiments, the base includes a base plate, a spindle, and a stop block; the two correction shifting blocks, the two connecting rods, the moving block and the positioning block are all arranged on the bottom plate, a chute extending towards the positioning block is formed in the bottom plate, and the compression block is arranged in the chute in a sliding manner; the rotating shaft is inserted into the bottom plate, and one ends of the two correction shifting blocks are both in rotary connection with the rotating shaft; the stop block cover is pressed on the sliding groove and connected with the bottom plate, and is used for stopping the compression block in the sliding groove, and the reset elastic piece is arranged between the compression block and the stop block.

In some embodiments, two extrusion protrusions are convexly arranged on one side, facing away from the base, of the compression block, and one end, facing away from the base, of each extrusion protrusion is inclined towards the positioning block, and each extrusion protrusion is used for stopping the workpiece on the positioning block.

Drawings

Fig. 1 is a schematic perspective view of a positioning fixture and a workpiece according to an embodiment of the present utility model.

Fig. 2 is a schematic perspective view of another angle between a positioning fixture and a workpiece according to an embodiment of the present utility model.

Fig. 3 is an exploded view of the positioning fixture shown in fig. 1.

Fig. 4 is an enlarged schematic view of area IV in fig. 3.

Fig. 5 is a schematic perspective view of a cover plate in the positioning fixture shown in fig. 1.

Description of the main reference signs

Positioning jig 100

Base 10

Bottom plate 11

Chute 111

Guide groove 112

Stop groove 113

Stop block 12

Baffle part 121

Toggle groove 122

Rotating shaft 13

Reset elastic piece 14

Positioning assembly 20

Positioning block 21

Support groove 211

Support protrusions 212

Compression block 22

Squeeze protrusion 221

Deflector rod 30

Correction dial block 40

Abutment groove 41

Tank bottom 411

Arc wall 412

Connecting rod 50

Pin 51

Moving block 60

Stop 61

First accommodation groove 62

Cover plate 70

Pressing elastic member 71

Limiting groove 72

Second accommodation groove 73

Locating pin 80

Workpiece 200

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and are not to be construed as limiting the present utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, it is to be noted that the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; the two components can be connected in a mechanical mode, can be electrically connected or can be communicated with each other, can be directly connected, can be indirectly connected through an intermediate medium, and can be communicated with each other inside the two components or can be in interaction relation with each other. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances. Some embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1, a positioning fixture 100 is provided in an embodiment of the utility model. The positioning fixture 100 is used for positioning and correcting the workpiece 200. The workpiece 200 may be a mobile phone connector, an earphone connector, etc., and after the positioning jig 100 performs positioning and alignment on the workpiece 200, the positioning jig 100 may be placed on a detection device (not shown) so that the detection device detects structural features of the workpiece 200. For ease of illustration and understanding, the present embodiment is described with respect to the workpiece 200 as an earphone connector, and the workpiece 200 has a generally arcuate profile, but it is apparent that this is not a limitation of the present embodiment.

The positioning fixture 100 of the embodiment of the utility model comprises a base 10, a positioning assembly 20, two correction shifting blocks 40, two connecting rods 50 and a moving block 60.

The positioning assembly 20 is disposed on the base 10 and is used for movably clamping the workpiece 200, so as to perform preliminary positioning on the position of the workpiece 200 on the positioning fixture 100.

The two correction shifting blocks 40 are oppositely arranged, one ends of the two correction shifting blocks 40 are rotationally connected with the base 10, and the other ends of the two correction shifting blocks 40 extend towards two sides of the positioning assembly 20 respectively. The two connecting rods 50 are oppositely arranged, and one ends of the two connecting rods 50 are respectively and rotatably connected with the two correction shifting blocks 40. The moving block 60 is slidably disposed on the base 10 and connected to the other ends of the two connecting rods 50, and the moving block 60 drives the two correction dials 40 to rotate through the two connecting rods 50 to approach or separate from each other, so that the two correction dials 40 correct the workpiece 200 when approaching each other. The other ends of the two connecting rods 50 are rotatably connected to the moving block 60 by a pin 51 (shown in fig. 3).

Further, referring to fig. 1, 2 and 3, in the embodiment of the present utility model, the positioning assembly 20 includes a positioning block 21, a pressing block 22 and a restoring elastic member 14. The positioning block 21 is arranged on the base 10 and between the other ends of the two correction shifting blocks 40, and the positioning block 21 is used for supporting the workpiece 200. The compressing block 22 is arranged on the base 10 in a sliding manner and is positioned on one side of the positioning block 21 away from the correction shifting block 40; one end of the reset elastic piece 14 is abutted with one side of the compression block 22 away from the positioning block 21, the other end of the reset elastic piece 14 is abutted against the base 10, and the reset elastic piece 14 is used for driving the compression block 22 to move towards the positioning block 21 so that the compression block 22 stops the workpiece 200 on the positioning block 21. In this way, the workpiece 200 is stopped on the positioning block 21 by driving the pressing block 22 through the reset elastic member 14, the workpiece 200 can be initially positioned on the positioning jig 100, and the workpiece 200 is moved by the two correction shifting blocks 40 conveniently in a manner that the workpiece 200 is elastically extruded by the pressing block 22.

In the embodiment of the utility model, the base 10 comprises a bottom plate 11, a stop block 12 and a rotating shaft 13, and the two correction shifting blocks 40, the two connecting rods 50, the moving block 60 and the positioning block 21 are all arranged on the bottom plate 11. The rotating shaft 13 is inserted on the bottom plate 11, and one ends of the two correction shifting blocks 40 are both in rotary connection with the rotating shaft 11. The bottom plate 11 is provided with a chute 111 extending towards the positioning block 21, and the compression block 22 is arranged in the chute 111 in a sliding manner; the stop block 12 is pressed on the sliding groove 111 and connected with the bottom plate 11, the stop block 12 is used for stopping the pressing block 22 in the sliding groove 111, and the reset elastic piece 14 is arranged between the pressing block 22 and the stop block 12. The sliding groove 111 is communicated with a side wall of the bottom plate 11, which is far away from the positioning block 21, one end of the stop block 12, which is far away from the positioning block 21, protrudes towards the sliding groove 111 to form a blocking part 121, one end of the reset elastic piece 14 is abutted with one side of the pressing block 22, which is far towards the blocking part 121, and the other end of the reset elastic piece 14 is abutted on the blocking part 121.

In this way, the compressing block 22 slides in the sliding groove 111, so that the sliding groove 111 can guide the sliding direction of the compressing block 22, and the compressing block 22 moves towards the positioning block 21 more accurately under the driving of the reset elastic piece 14. By arranging the stop block 12 to stop the compression block 22 and abutting against the reset elastic piece 14, the compression block 22 and the reset elastic piece 14 can be prevented from being separated from the chute 111, so that the stability of the reset elastic piece 14 when the compression block 22 is driven to stop the workpiece 200 on the positioning block 21 is ensured.

In the embodiment of the present utility model, the positioning fixture 100 further includes a driving lever 30, where the driving lever 30 is inserted into the pressing block 22, and the driving lever 30 is used for receiving an external force to drive the pressing block 22 to slide in a direction away from the positioning block 21. The stop block 12 is provided with a poking groove 122, the extending direction of the poking groove 122 is the same as that of the sliding groove 111, one end of the poking rod 30, which is far away from the compression block 22, penetrates through the poking groove 122 and protrudes out of one side of the stop block 12, which is far away from the bottom plate 11, and the poking groove 122 is used for guiding the moving direction of the poking rod 30. In this way, the deflector 30 is arranged to bear external force to drive the compressing block 22 to slide in the direction away from the positioning block 21, so that the workpiece 200 is conveniently placed on the positioning block 21. The shifting groove 122 is arranged to limit the moving direction and the moving distance of the shifting lever 30, so that the shifting lever 30 can drive the compressing block 22 to move more accurately, and the compressing block 22 can be prevented from excessively compressing the resetting elastic piece 14 to damage the resetting elastic piece 14.

Referring to fig. 3 and 4, in the embodiment of the present utility model, one end of the positioning block 21 far from the base 10 is provided with a supporting groove 211, two ends of the supporting groove 211 respectively correspond to the two correction shifting blocks 40, the supporting groove 211 is communicated with one side of the positioning block 21 close to the compacting block 22, a middle part of a groove wall of the supporting groove 211 far from the positioning block 21 is provided with a supporting protrusion 212 protruding towards the positioning block 21, when the workpiece 200 is placed on the positioning block 21, the workpiece 200 is arranged in the supporting groove 211, the middle part of the workpiece 200 is abutted with the supporting protrusion 212, and two ends of the workpiece 200 are abutted with two end outlets of the supporting groove 211; the side wall of the workpiece 200 is supported at three points through the supporting groove 211 and the supporting protrusion 212, so that the positioning block 21 can be matched with the shape of the workpiece 200, the workpiece 200 is supported more stably, and in addition, the contact area of the three-point supporting mode is small, so that the workpiece 200 is aligned by the two correction shifting blocks 40. The return elastic member 14 may be a spring, and the return elastic member 14 drives the pressing block 22 to stop the workpiece 200 in the supporting groove 211.

In the embodiment of the utility model, two extrusion protrusions 221 are convexly arranged at one side of the pressing block 22, which is away from the bottom plate 11 of the base 10, and one ends of the two extrusion protrusions 221, which are away from the bottom plate 11 of the base 10, are inclined towards the supporting groove 211 of the positioning block 21, and the height of one end of the two extrusion protrusions 221, which is away from the bottom plate 11, is not lower than the height of one end of the positioning block 21, which is away from the bottom plate 11, and the two extrusion protrusions 221 are used for stopping the workpiece 200 on the supporting groove 211 of the positioning block 21. In this way, by providing two pressing protrusions 221 inclined toward the positioning block 21, it is convenient to apply an inclined pressing force to press the work 200, thereby preventing the work 200 from coming out of the positioning block 21.

Referring to fig. 1, 2 and 3, in the embodiment of the present utility model, two correction dials 40 are provided with an abutment groove 41 on a side far away from each other, the abutment groove 41 is communicated with a side of a corresponding correction dial 40, the abutment groove 41 includes a groove bottom 411 and an arc wall 412, one ends of two connecting rods 50 are respectively rotatably connected with the groove bottom 411 of the corresponding abutment groove 41, the arc wall 412 is concavely formed along one side of the correction dial 40, and the arc wall 412 is used for avoiding the connecting rod 50 when the connecting rod 50 drives the corresponding correction dial 40 to rotate. In this way, by providing the abutment groove 41 on the correction dial block 40 and rotationally connecting one end of the connecting rod 50 with the groove bottom 411 of the corresponding abutment groove 41, both ends of the connecting rod 50 can be in a horizontal state, so that the moving block 60 is more stable when the two correction dial blocks 40 are driven to rotate by the two connecting rods 50.

In the embodiment of the present utility model, the bottom plate 11 of the base 10 is provided with a guide groove 112 extending toward the positioning block 21 of the positioning assembly 20, the extending direction of the guide groove 112 is the same as the extending direction of the chute 111 and is located on the same straight line, and the moving block 60 is slidably disposed in the guide groove 112. In this way, by providing the sliding groove 111 to guide the sliding direction of the moving block 60, the accuracy of the moving block 60 when the two correction dials 40 are driven to approach or separate from each other by the two connecting rods 50 can be further improved.

In the embodiment of the utility model, two opposite groove walls of the guide groove 112 are respectively provided with a stop groove 113, two sides of the moving block 60 are provided with stop parts 61 matched with the corresponding stop grooves 113, and the stop grooves 113 are matched with the stop parts 61 to limit the moving block 60 from being separated from the guide groove 112. Specifically, the stop grooves 113 are symmetrically disposed on two opposite groove walls of the guide groove 112 and form an inverted T shape together with the guide groove 112, and the stop portion 61 also forms an inverted T shape together with the moving block 60. In this way, by arranging the stop groove 113 to cooperate with the stop portion 61 to limit the moving block 60 from being separated from the guide groove 112, the sliding stability of the moving block 60 in the guide groove 112 is improved, and the stability of the moving block 60 when the two correction shifting blocks 40 are driven by the two connecting rods 50 to approach or separate from each other is further improved.

In the embodiment of the present utility model, the positioning fixture 100 further includes a cover plate 70, where the cover plate 70 is disposed on the guide groove 112 and connected to the bottom plate 11 of the base 10, and the cover plate 70 is used for stopping the moving block 60 in the guide groove 112. In this way, by providing the cover plate 70 to stop the moving block 60 in the guide groove 112, the stability of sliding the moving block 60 in the guide groove 112 is further improved.

Referring to fig. 3 and 5, in the embodiment of the present utility model, a first accommodating groove 62 is formed on a side wall of the moving block 60 facing the cover plate 70, and a second accommodating groove 73 opposite to the first accommodating groove 62 is formed on a side wall of the cover plate 70 facing the moving block 60; the positioning jig 100 further includes a pressing elastic member 71, where the pressing elastic member 71 may be a spring, a portion of the pressing elastic member 71 is disposed in the first accommodating groove 62, and another portion of the pressing elastic member 71 is disposed in the second accommodating groove 73, and the pressing elastic member 71 is configured to drive the moving block 60 to slide in a direction away from the positioning block 21 of the positioning assembly 20, so that the moving block 60 drives the two correction dials 40 to be away from each other through the two connecting rods 50.

When the moving block 60 is pushed to move towards the positioning block 21, the moving block 60 drives the two correction shifting blocks 40 to approach each other through the two connecting rods 50 so as to correct the workpiece 200, and the pressing elastic piece 71 is compressed; when the external force is withdrawn from the moving block 60, the pressing elastic member 71 is elastically restored to drive the moving block 60 to move in a direction away from the positioning block 21, and the moving block 60 drives the two correction shifting blocks 40 to move away from each other through the two connecting rods 50, so that the two correction shifting blocks 40 are convenient for correcting the next workpiece 200, and the shielding of the detected area of the workpiece 200 when the workpiece 200 is detected by the detection device can be avoided.

Referring to fig. 1 and 3, in the embodiment of the utility model, the positioning fixture 100 further includes a positioning pin 80, and the positioning pin 80 is inserted into a side of the moving block 60 facing the cover plate 70; the cover plate 70 is provided with a limiting groove 72, and the limiting groove 72 is used for stopping the positioning pin 80 so as to limit the distance that the pressing elastic piece 71 drives the moving block 60 to slide towards the direction deviating from the positioning block 21. Specifically, the limiting groove 72 is disposed on one side of the cover plate 70 facing the positioning block 21, when the pressing elastic member 71 drives the moving block 60 to slide in a direction away from the positioning block 21, the positioning pin 80 is abutted to the limiting groove 72 to limit the sliding distance of the moving block 60 in a direction away from the positioning block 21, so that the moving block 60 is limited to drive the two correction shifting blocks 40 to move away from each other by the two connecting rods 50, and damage to the two correction shifting blocks 40 due to overlarge distance away from each other is avoided.

The steps of positioning and correcting the workpiece 200 by the positioning jig 100 according to the embodiment of the utility model include:

the deflector rod 30 is shifted to enable the deflector rod 30 to drive the pressing block 22 to be far away from the positioning block 21, the workpiece 200 is tightly attached to the groove wall of the supporting groove 211 of the positioning piece, the deflector rod 30 is loosened, the pressing block 22 stops the workpiece 200 on the supporting groove 211 under the driving of the reset elastic piece 14, and the pressing block 22 and the positioning block 21 are matched to perform preliminary positioning on the workpiece 200.

The moving block 60 is pushed to move towards the positioning block 21, and the moving block 60 drives the two correction shifting blocks 40 to approach each other through the two connecting rods 50 so as to correct the workpiece 200 and accurately position the workpiece 200.

The moving block 60 is loosened, the pressing elastic piece 71 drives the moving block 60 to move in a direction away from the positioning block 21, and the moving block 60 drives the two correction shifting blocks 40 to move away from each other through the two connecting rods 50 so as to loosen the workpiece 200.

In summary, the positioning fixture 100 according to the embodiment of the utility model can perform the preliminary positioning of the workpiece 200 at the position on the positioning fixture 100 by arranging the positioning assembly 20 to movably clamp the workpiece 200. The two connecting rods 50 are driven to move by the moving block 60, so that the two correction shifting blocks 40 are driven by the two connecting rods 50 to be close to each other to apply the same shifting force to shift the workpiece 200, the function of automatically shifting the workpiece 200 is realized, the influence caused by human factors when the workpiece 200 is shifted is avoided, the accuracy of shifting the workpiece 200 is improved, and the accuracy of detecting the characteristic structure of the workpiece 200 by the detecting device is further improved. In addition, the force of the two correction shifting blocks 40 shifting the workpiece 200 can be controlled by the moving block 60 through the two connecting rods 50, and the shifting force applied to the workpiece 200 by the two correction shifting blocks 40 is uniform, so that the damage to the workpiece 200 can be effectively reduced.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Finally, it should be noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made to the technical solution of the present utility model without departing from the spirit and scope of the technical solution of the present utility model.

Claims (10)

1. A positioning jig for fix a position and correct work piece, its characterized in that includes:

a base;

the positioning assembly is arranged on the base and is used for movably clamping the workpiece;

the two correction shifting blocks are oppositely arranged, one ends of the two correction shifting blocks are rotationally connected with the base, and the other ends of the two correction shifting blocks extend towards two sides of the positioning assembly respectively;

the two connecting rods are oppositely arranged, and one ends of the two connecting rods are respectively and rotatably connected with the two correction shifting blocks;

the moving block is arranged on the base in a sliding manner and is connected with the other ends of the two connecting rods, and the moving block drives the two correction shifting blocks to rotate through the two connecting rods so as to achieve mutual approaching or separating, so that the two correction shifting blocks are aligned with the workpiece when approaching to each other.

2. The positioning jig according to claim 1, wherein two of the correction dials are provided with an abutment groove on a side away from each other, the abutment groove is formed through one side of the corresponding correction dial, the abutment groove comprises a groove bottom and an arc wall, one end of each of the two connecting rods is respectively and rotatably connected with the groove bottom of the corresponding abutment groove, and the arc wall is formed along one side of the correction dial in a concave manner.

3. The positioning jig of claim 1, wherein the base is provided with a guide slot extending toward the positioning assembly, and the moving block is slidably disposed in the guide slot.

4. The positioning jig of claim 3, wherein two opposite groove walls of the guide groove are respectively provided with a stop groove, two sides of the moving block are provided with stop parts matched with the corresponding stop grooves, and the stop grooves are matched with the stop parts to limit the moving block from being separated from the guide groove.

5. The positioning jig of claim 3, further comprising a cover plate covering the guide groove and connected to the base, wherein the cover plate is configured to stop the moving block in the guide groove.

6. The positioning jig of claim 5, wherein a first accommodating groove is formed in a side wall of the moving block facing the cover plate, and a second accommodating groove opposite to the first accommodating groove is formed in a side wall of the cover plate facing the moving block;

the positioning jig further comprises a pressing elastic piece, one part of the pressing elastic piece is arranged in the first accommodating groove, the other part of the pressing elastic piece is arranged in the second accommodating groove, and the pressing elastic piece is used for driving the moving block to slide in the direction away from the positioning assembly, so that the moving block drives the two correction shifting blocks to be away from each other through the two connecting rods.

7. The positioning jig of claim 6, further comprising a positioning pin inserted into a side of the moving block facing the cover plate; and the cover plate is provided with a limit groove, and the limit groove is used for stopping the positioning pin so as to limit the distance that the pressing elastic piece drives the moving block to slide towards the direction deviating from the positioning assembly.

8. The positioning jig of claim 1, wherein the positioning assembly comprises:

the positioning block is arranged on the base and positioned between the other ends of the two correction shifting blocks, and is used for supporting the workpiece;

the compressing block is arranged on the base in a sliding manner and is positioned on one side of the positioning block away from the correction shifting block;

one end of the reset elastic piece is abutted with one side, far away from the positioning block, of the compression block, the other end of the reset elastic piece is abutted to the base, and the reset elastic piece is used for driving the compression block to move towards the positioning block so that the compression block stops the workpiece on the positioning block.

9. The positioning jig of claim 8 wherein the base comprises:

the base plate, the two correction shifting blocks, the two connecting rods, the moving block and the positioning block are all arranged on the base plate, a chute extending towards the positioning block is formed in the base plate, and the compression block is arranged in the chute in a sliding manner;

the rotating shaft is inserted into the bottom plate, and one ends of the two correction shifting blocks are both in rotary connection with the rotating shaft;

the stop block is covered on the sliding groove and connected with the bottom plate, and is used for stopping the compression block in the sliding groove, and the reset elastic piece is arranged between the compression block and the stop block.

10. The positioning jig of claim 8, wherein two extrusion protrusions are convexly arranged at one side of the pressing block, which is away from the base, and one ends of the two extrusion protrusions, which are away from the base, are inclined towards the positioning block, and the two extrusion protrusions are used for stopping the workpiece on the positioning block.