Positioning fixture and polishing device

Abstract

The present invention discloses a positioning jig and a polishing device. The positioning jig includes a first positioning component and a second positioning component located on both sides of a loading platform along a first direction relative to the first positioning component. The first positioning component includes a first base, a first driving cylinder and a first positioning member. The first base is drivingly connected to the first driving cylinder. The first positioning member is movable between a first position and a second position and is movably arranged on the first base; a first adjusting member is installed on the first base to adjust the position of the first positioning member between the first position and the second position; the second positioning component includes a second base, a second driving cylinder and a second positioning member. The second base is drivingly connected to the second driving cylinder. The second positioning member is movable between a third position and a fourth position and is movably arranged on the second base; and a first elastic member is installed between the second base and the second positioning member. The positioning jig of the present invention can adjust the spacing between the positioning members to position light guide plates of different sizes.

Description

Technical Field

[0001] The present invention relates to the technical field of polishing devices, and in particular to a positioning fixture and a polishing device. Background Art

[0002] After the light guide plate is cut and formed, the side edges of the light guide plate are usually not smooth enough, and a polishing device is needed to polish the side edges of the light guide plate. Before polishing, the light guide plate needs to be positioned, and the positioning parts of the positioning fixture of the polishing device are moved toward the light guide plate from the four sides of the light guide plate to push the light guide plate to the preset position, thereby completing the positioning of the light guide plate; however, the spacing between the positioning parts of the traditional positioning fixture cannot be adjusted, resulting in it being unsuitable for positioning light guide plates of different sizes. Summary of the invention

[0003] The main purpose of the present invention is to provide a positioning fixture, which is intended to be able to adjust the spacing between positioning pieces so as to be suitable for positioning light guide plates of different sizes.

[0004] In order to achieve the above-mentioned purpose, the present invention proposes a positioning fixture. The positioning fixture includes a first positioning component and a second positioning component located on both sides of the loading platform along the first direction relative to the first positioning component, the first positioning component includes a first base, a first driving cylinder and a first positioning member, the first base is drivingly connected to the first driving cylinder, the first positioning member is movable between a first position and a second position and is movably arranged on the first base; a first adjusting member is installed on the first base and is used to adjust the position of the first positioning member between the first position and the second position; the second positioning component includes a second base, a second driving cylinder and a second positioning member, the second base is drivingly connected to the second driving cylinder, the second positioning member is movable between a third position and a fourth position and is movably arranged on the second base; and a first elastic member is installed between the second base and the second positioning member.

[0005] Optionally, the first base includes a first base body and a first bracket installed on the top surface of the first base body, the first positioning assembly also includes a first slide rail installed on the side of the first bracket and a first slider slidably installed on the first slide rail, the first positioning piece is installed on the first slider to move between the first position and the second position, a first mounting portion is protruding from the top surface of the end of the first bracket facing away from the second positioning assembly, the first mounting portion is provided with a first assembling hole, the first adjusting piece is installed in the first assembling hole, the driving end of the first adjusting piece is connected to the first positioning piece to drive the first positioning piece to move between the first position and the second position, and a stop piece is protruding from the top surface of the end of the first bracket facing the second positioning assembly.

[0006] Optionally, the second base includes a second base body and a second bracket installed on the top surface of the second base body, the second positioning assembly also includes a second slide rail installed on the side of the second bracket and a second slider slidably installed on the second slide rail, the second positioning member is installed on the second slider to move between the third position and the fourth position, the top surface of the second bracket at one end facing away from the first positioning assembly is provided with a first protrusion, the end of the second slider at one end facing away from the first positioning assembly is provided with a blind hole, one end of the first elastic member is installed in the blind hole, and the other end abuts against the first protrusion.

[0007] Optionally, the positioning fixture also includes a third positioning assembly and a fourth positioning assembly located on both sides of the loading platform along the second direction relative to the third positioning assembly, the third positioning assembly including a third base, a third driving cylinder and a third positioning member, the third base is drivingly connected to the third driving cylinder, and the third positioning member is movably arranged on the third base between a fifth position and a sixth position; a second adjusting member is installed on the third base, and is used to adjust the position of the third positioning member between the fifth position and the sixth position; the fourth positioning assembly includes a fourth base, a fourth driving cylinder and a fourth positioning member, the fourth base is drivingly connected to the fourth driving cylinder, and the fourth positioning member is movably arranged on the fourth base between a seventh position and an eighth position; and a second elastic member is installed between the fourth base and the fourth positioning member.

[0008] Optionally, the third positioning assembly also includes a third slide rail installed on the third base, a third slider slidably installed on the third slide rail and a third elastic member, the third positioning member is installed on the third slider to move between the fifth position and the sixth position, the top surface of the third base is convexly provided with a second mounting portion, the second mounting portion is provided with a second assembly hole, the second adjusting member is installed in the second assembly hole, the driving end of the second adjusting member is connected to the third positioning member to drive the third positioning member to move between the fifth position and the sixth position, one end of the third elastic member is connected to the top surface of the third base, and the other end is connected to the third positioning member.

[0009] Optionally, the third positioning member includes a first connecting seat and a positioning rod extending along the second direction, the first connecting seat is provided with a mounting hole extending along the second direction, the positioning rod is installed in the mounting hole, the first connecting seat is provided with an adjustment gap, and the adjustment gap is used to connect the mounting hole with the external environment, one end of the third elastic member is connected to the first connecting seat, and the other end is connected to the top surface of the third base.

[0010] Optionally, a positioning head is provided at one end of the positioning rod facing the fourth positioning assembly, and a guiding slope is provided on a side surface of the positioning head, wherein the guiding slope is inclined from a side portion of the positioning head toward a middle portion of the positioning head.

[0011] Optionally, the fourth positioning assembly also includes a fourth slide rail installed on the fourth base and a fourth slider slidably installed on the fourth slide rail, the fourth positioning member is installed on the fourth slider to move between the seventh position and the eighth position, the top surface of the fourth base at one end facing away from the third positioning assembly is provided with a second protrusion, the top surface of the fourth positioning member is provided with a third protrusion, the third protrusion is provided with a countersunk hole, one end of the second elastic member is connected to the second protrusion, and the other end is connected to the countersunk hole.

[0012] Optionally, the fourth positioning member includes a second connecting seat installed on the fourth slider and a positioning rotating block rotatably installed on the second connecting seat, the third protrusion is protruding on the top surface of the second connecting seat, the positioning rotating block is cylindrical, and the positioning rotating block partially protrudes from the side of the second connecting seat facing the loading platform.

[0013] The present invention also provides a polishing device, comprising a loading platform and a positioning fixture as described in any one of the above items.

[0014] The technical solution of the present invention operates the first adjusting member to adjust the position of the first positioning member between the first position and the second position, so that when the first positioning member and the second positioning member move relative to each other, the distance between the first positioning member and the second positioning member is adjusted to be suitable for positioning light guide plates of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0016] Figure 1 It is a structural schematic diagram of an embodiment of a positioning fixture of the present invention;

[0017] Figure 2 for Figure 1 A schematic structural diagram of the first positioning component in FIG.

[0018] Figure 3 for Figure 1 A schematic structural diagram of the second positioning component in FIG.

[0019] Figure 4 for Figure 1 A schematic diagram of the structure of the third positioning component in FIG.

[0020] Figure 5 for Figure 1 Schematic diagram of the structure of the fourth positioning component in.

[0021] Description of Figure Numbers:

[0022] Label name Label name 100 Positioning fixture 311 Second installation part 10 First positioning component 312 Second assembly hole 11 First base 32 The third positioning piece 111 The first body 321 First connector 112 First bracket 322 Positioning rod 113 First installation part 323 Mounting holes 114 First assembly hole 324 Adjust the gap 115 Stopper 325 Positioning head 12 First drive cylinder 326 Guide bevel 13 First positioning piece 33 Second adjustment member 14 First adjustment member 34 The third slide rail 15 First slide rail 35 Third Slider 16 First Slider 40 Fourth positioning component 20 Second positioning component 41 Fourth Pedestal 21 Second base 411 second convex portion 211 The second body 42 Fourth positioning member 212 Second bracket 421 Second connector 213 first convex part 422 third convex part 22 Second drive cylinder 423 Positioning block 23 Second positioning member 43 Fourth slide rail 24 Second slide rail 44 Fourth Slider 25 Second slider 50 First mounting base 30 The third positioning component 60 Second mounting base 31 The third base 200 Loading platform

[0023] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0026] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0027] The present invention provides a positioning fixture 100 .

[0028] In the embodiment of the present invention, Figure 1-Figure 3As shown, the positioning fixture 100 includes a first positioning component 10 and a second positioning component 20 located on both sides of a loading platform 200 along a first direction relative to the first positioning component 10, the first positioning component 10 includes a first base 11, a first driving cylinder 12 and a first positioning member 13, the first base 11 is drivingly connected to the first driving cylinder 12, the first positioning member 13 is movable between a first position and a second position and is movably arranged on the first base 11; a first adjusting member 14 is installed on the first base 11, and is used to adjust the position of the first positioning member 13 between the first position and the second position; the second positioning component 20 includes a second base 21, a second driving cylinder 22 and a second positioning member 23, the second base 21 is drivingly connected to the second driving cylinder 22, the second positioning member 23 is movable between a third position and a fourth position and is movably arranged on the second base 21; and a first elastic member (not shown in the figure), which is installed between the second base 21 and the second positioning member 23.

[0029] Specifically, the loading platform 200 is used to place the light guide plate, and the positioning fixture 100 is used to move the light guide plate on the loading platform 200 to a preset position. The first base 11 is used to carry the first positioning member 13 and the first adjusting member 14, and the first driving cylinder 12 is used to drive the first base 11 to reciprocate in the first direction, thereby driving the first positioning member 13 to reciprocate in the first direction. The second base 21 is used to carry the second positioning member 23 and the first elastic member, and the second driving cylinder 22 is used to drive the second base 21 to reciprocate in the first direction, thereby driving the second positioning member 23 to reciprocate in the second direction. The first position and the second position are the positions of the first positioning member 13 relative to the first base 11, and the second position is closer to the loading platform 200 than the first position. The third position and the fourth position are the positions of the second positioning member 23 relative to the second base 21, and the fourth position is closer to the loading platform 200 than the third position. The first adjusting member 14 is a micrometer to improve the accuracy of the position adjustment of the first positioning member 13. When positioning the light guide plate, adjusting the first adjusting member 14 may not necessarily ensure that the distance between the first positioning member 13 and the second positioning member 23 is equal to the size of the light guide plate. Therefore, the first adjusting member 14 is usually adjusted to ensure that the distance between the first positioning member 13 and the second positioning member 23 is smaller than the size of the light guide plate, so as to ensure that the first positioning member 13 and the second positioning member 23 can respectively push against the two sides of the light guide plate to ensure the positioning effect. The first elastic member is a compression spring. During positioning, the first elastic member is compressed to adapt to the size of the light guide plate, and the compression spring can play a buffering role to prevent the light guide plate from being damaged due to rigid collision.

[0030] The positioning working principle of the positioning fixture 100 is: the first driving cylinder 12 drives the first positioning member 13 to move toward the loading platform 200, and the second driving cylinder 22 drives the second positioning member 23 to move toward the loading platform 200, and the first positioning member 13 and the second positioning member 23 respectively push the opposite sides of the light guide plate on the loading platform 200 to move the light guide plate to a preset position.

[0031] The technical solution of the present invention is to adjust the position of the first positioning member 13 between the first position and the second position by operating the first adjusting member 14, so that when the first positioning member 13 and the second positioning member 23 move relative to each other, the distance between the first positioning member 13 and the second positioning member 23 is adjusted to be suitable for positioning light guide plates of different sizes.

[0032] Furthermore, the positioning fixture 100 also includes a first mounting base 50 and a second mounting base 60, the first driving cylinder 12 is installed on the first mounting base 50, the second driving cylinder 22 is installed on the second mounting base 60, the first base 11 is slidably installed on the first mounting base 50 through a slide rail slider structure, and the second base 21 is slidably installed on the second mounting base 60 through a slide rail slider structure, and the first mounting base 50 and the second mounting base 60 are installed on the mounting plane of the polishing device to install the first positioning assembly 10 and the second positioning assembly 20 in the polishing device.

[0033] like Figure 1 and Figure 2 As shown, in one embodiment, the first base 11 includes a first base body 111 and a first bracket 112 installed on the top surface of the first base body 111, the first positioning assembly 10 also includes a first slide rail 15 installed on the side of the first bracket 112 and a first slider 16 slidably installed on the first slide rail 15, the first positioning member 13 is installed on the first slider 16 to move between the first position and the second position, the top surface of the first bracket 112 at one end facing away from the second positioning assembly 20 is provided with a first mounting portion 113, the first mounting portion 113 is provided with a first assembling hole 114, the first adjusting member 14 is installed in the first assembling hole 114, the driving end of the first adjusting member 14 is connected to the first positioning member 13 to drive the first positioning member 13 to move between the first position and the second position, and the top surface of the first bracket 112 at one end facing the second positioning assembly 20 is provided with a stopper 115.

[0034] Specifically, the first base 111 is plate-shaped; the first bracket 112 is formed by splicing two rectangular plates in an L shape, one end of the first bracket 112 is mounted on the first base 111, and the other end faces the loading platform 200. The first slide rail 15 extends along the first direction. The first mounting portion 113 is plate-shaped and is arranged perpendicular to the top surface of the first bracket 112. One end of the first bracket 112 facing the loading platform 200 protrudes toward one side of the first slide rail 15 to form a stopper 115, and the end of the stopper 115 protrudes from the side of the first slider 16 facing the first bracket 112 to prevent the first slider 16 from falling off the first slide rail 15.

[0035] like Figure 1 and Figure 3 As shown, in one embodiment, the second base 21 includes a second base body 211 and a second bracket 212 installed on the top surface of the second base body 211, the second positioning assembly 20 also includes a second slide rail 24 installed on the side of the second bracket 212 and a second slider 25 slidably installed on the second slide rail 24, the second positioning member 23 is installed on the second slider 25 to move between the third position and the fourth position, the top surface of the second bracket 212 at one end facing away from the first positioning assembly 10 is convexly provided with a first protrusion 213, the end of the second slider 25 facing away from the first positioning assembly 10 is provided with a blind hole (not shown in the figure), one end of the first elastic member is installed in the blind hole, and the other end abuts against the first protrusion 213.

[0036] The second bracket 212 is formed by splicing two rectangular plates and is L-shaped. One end of the second bracket 212 is mounted on the second base 211 and the other end faces the loading platform 200. The second slide rail 24 extends along the first direction.

[0037] like Figure 1As shown, in one embodiment, the positioning fixture 100 also includes a third positioning assembly 30 and a fourth positioning assembly 40 located on both sides of the loading platform 200 along the second direction relative to the third positioning assembly 30, the third positioning assembly 30 includes a third base 31, a third driving cylinder and a third positioning member 32, the third base 31 is drivingly connected to the third driving cylinder (not shown in the figure), and the third positioning member 32 is movable between the fifth position and the sixth position and is movably arranged on the third base 31; a second adjusting member 33 is installed on the third base 31, and is used to adjust the position of the third positioning member 32 between the fifth position and the sixth position; the fourth positioning assembly 40 includes a fourth base 41, a fourth driving cylinder (not shown in the figure) and a fourth positioning member 42, the fourth base 41 is drivingly connected to the fourth driving cylinder, and the fourth positioning member 42 is movable between the seventh position and the eighth position and is movably arranged on the fourth base 41; and a second elastic member (not shown in the figure), which is installed between the fourth base 41 and the fourth positioning member 42.

[0038] Specifically, the second direction is perpendicular to the first direction. The third base 31 is used to carry the third positioning member 32 and the second adjusting member 33, and the third driving cylinder is used to drive the third base 31 to reciprocate in the second direction, thereby driving the third positioning member 32 to reciprocate in the second direction. The fourth base 41 is used to carry the fourth positioning member 42 and the second elastic member, and the fourth driving mechanism is used to drive the fourth base 41 to reciprocate in the fourth direction, thereby driving the fourth positioning member 42 to reciprocate in the second direction. The fifth position and the sixth position are the positions of the third positioning member 32 relative to the third base 31, and the sixth position is closer to the loading platform 200 than the fifth position. The seventh position and the eighth position are the positions of the fourth positioning member 42 relative to the fourth base 41, and the eighth position is closer to the loading platform 200 than the seventh position. The second adjusting member 33 is a micrometer to improve the accuracy of the position adjustment of the third positioning member 32. When positioning the light guide plate, adjusting the second adjusting member 33 may not necessarily ensure that the spacing between the third positioning member 32 and the fourth positioning member 42 is equal to the size of the light guide plate. Therefore, the second adjusting member 33 is usually adjusted to a spacing between the third positioning member 32 and the fourth positioning member 42 that is smaller than the size of the light guide plate, so as to ensure that the third positioning member 32 and the fourth positioning member 42 can respectively push against the two sides of the light guide plate to ensure the positioning effect. The second elastic member is a compression spring. When positioning, the second elastic member is compressed to adapt to the size of the light guide plate, and the compression spring can play a buffering role to prevent the light guide plate from being damaged due to rigid collision. In this embodiment, the spacing between the first positioning member 13 and the second positioning member 23 is adjusted according to the length of the light guide plate, and the spacing between the third positioning member 32 and the fourth positioning member 42 is adjusted according to the width of the light guide plate.

[0039] Furthermore, the positioning fixture 100 also includes a third mounting base (not shown in the figure) and a fourth mounting base (not shown in the figure), the third driving cylinder is installed on the third mounting base, the fourth driving cylinder is installed on the fourth mounting base, the third base 31 is slidably installed on the third mounting base through a slide rail slider structure, and the fourth base 41 is slidably installed on the fourth mounting base through a slide rail slider structure. The third mounting base and the fourth mounting base are installed on the mounting plane of the polishing device to install the third positioning assembly 30 and the fourth positioning assembly 40 in the polishing device.

[0040] like Figure 1 and Figure 4 As shown, in one embodiment, the third positioning assembly 30 also includes a third slide rail 34 installed on the third base 31, a third slider 35 slidably installed on the third slide rail 34 and a third elastic member (not shown in the figure), the third positioning member 32 is installed on the third slider 35 to move between the fifth position and the sixth position, the top surface of the third base 31 is convexly provided with a second mounting portion 311, the second mounting portion 311 is provided with a second assembly hole 312, the second adjusting member 33 is installed in the second assembly hole 312, the driving end of the second adjusting member 33 is connected to the third positioning member 32 to drive the third positioning member 32 to move between the fifth position and the sixth position, one end of the third elastic member is connected to the top surface of the third base 31, and the other end is connected to the third positioning member 32.

[0041] Specifically, the third slide rail 34 extends along the second direction. The second mounting portion 311 is plate-shaped and is disposed perpendicular to the top surface of the third base 31. The third elastic member is a tension spring, one end of which is connected to the top surface of the third base 31, and the other end is connected to the bottom surface or side surface of the third positioning member 32, providing a pulling force for the third positioning member 32 to prevent the third slider 35 from escaping from the third slide rail 34, and cooperating with the second adjusting member 33 to relatively fix the third slider 35 on the third slide rail 34, preventing the third slider 35 from moving due to inertia when the third base 31 moves.

[0042] like Figure 1 and Figure 4 As shown, in one embodiment, the third positioning member 32 includes a first connecting seat 321 and a positioning rod 322 extending along the second direction, the first connecting seat 321 is provided with a mounting hole 323 extending along the second direction, the positioning rod 322 is installed in the mounting hole 323, the first connecting seat 321 is provided with an adjustment gap 324, and the adjustment gap 324 is used to connect the mounting hole 323 with the external environment, one end of the third elastic member is connected to the first connecting seat 321, and the other end is connected to the top surface of the third base 31.

[0043] Specifically, the first connecting seat 321 is plate-shaped; the positioning rod 322 is cylindrical; the adjustment gap 324 includes a first gap extending downward from the top surface of the first connecting seat 321 by a preset distance, and a second gap extending horizontally from the bottom end of the first gap to the mounting hole 323. By controlling the spacing of the second gap, the installation size of the mounting hole 323 is controlled to be suitable for installing positioning rods 322 of different sizes.

[0044] like Figure 4 As shown, in one embodiment, a positioning head 325 is provided at one end of the positioning rod 322 facing the fourth positioning assembly 40 , and a guide slope 326 is provided on the side of the positioning head 325 , and the guide slope 326 is inclined from the side of the positioning head 325 to the middle of the positioning head 325 .

[0045] Specifically, the guiding slopes 326 are inclined from both sides of the positioning head 325 toward the loading platform 200. When the light guide plate is transported to the loading platform 200, if the light guide plate touches the positioning head 325, the guiding slopes 326 can guide the light guide plate to continue moving, preventing the light guide plate from being stuck by the positioning head 325, causing the light guide plate to be unable to reach the preset position of the loading platform 200.

[0046] like Figure 1 and Figure 5 As shown, in one embodiment, the fourth positioning assembly 40 also includes a fourth slide rail 43 installed on the fourth base 41 and a fourth slider 44 slidably installed on the fourth slide rail 43, the fourth positioning member 42 is installed on the fourth slider 44 to move between the seventh position and the eighth position, the top surface of the fourth base 41 at one end facing away from the third positioning assembly 30 is convexly provided with a second protrusion 411, the top surface of the fourth positioning member 42 is convexly provided with a third protrusion 422, the third protrusion 422 is provided with a countersunk hole (not shown in the figure), one end of the second elastic member is connected to the second protrusion 411, and the other end is connected to the countersunk hole.

[0047] Specifically, the fourth slide rail 43 extends along the second direction. The counterbore extends along the second direction.

[0048] like Figure 5 As shown, in one embodiment, the fourth positioning member 42 includes a second connecting seat 421 installed on the fourth slider 44 and a positioning rotating block 423 rotatably installed on the second connecting seat 421, the top surface of the second connecting seat 421 is protruded with the third protrusion 422, the positioning rotating block 423 is cylindrical, and the positioning rotating block 423 partially protrudes from the side of the second connecting seat 421 facing the loading platform 200.

[0049] When the light guide plate is transported to the loading platform 200, if the light guide plate touches the positioning block 423, the positioning block 423 rotates to guide the light guide plate to continue to move, preventing the light guide plate from being stuck by the positioning block 423, causing the light guide plate to fail to reach the preset position of the loading platform 200.

[0050] like Figure 1 and Figure 4 As shown, in one embodiment, the number of the third positioning members 32 is two and they are spaced apart along the first direction, and the number of the fourth positioning members 42 is two and they are spaced apart along the first direction. Specifically, the light guide plate is usually rectangular, and the third positioning member 32 and the fourth positioning member 42 push against the long side of the light guide plate. If only one of the third positioning member 32 and the fourth positioning member 42 is provided, it is easy to cause the light guide plate to deflect during positioning. By providing two third positioning members 32 and two fourth positioning members 42, and the third positioning member 32 and the fourth positioning member 42 are provided correspondingly, the light guide plate is prevented from deflecting during positioning.

[0051] The present invention also proposes a polishing device, which includes a loading platform 200 and a positioning fixture 100. The specific structure of the positioning fixture 100 refers to the above-mentioned embodiment. Since the polishing device adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0052] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A positioning fixture, characterized in that: include: A first positioning assembly comprises a first base, a first driving cylinder and a first positioning member, wherein the first base is drivingly connected to the first driving cylinder, and the first positioning member is movable between a first position and a second position and is disposed on the first base; a first adjusting member, mounted on the first base, for adjusting the position of the first positioning member between the first position and the second position; A second positioning assembly is located on both sides of the loading platform along the first direction relative to the first positioning assembly, the second positioning assembly comprises a second base, a second driving cylinder and a second positioning member, the second base is drivingly connected to the second driving cylinder, and the second positioning member is movably disposed on the second base between a third position and a fourth position; and A first elastic member, installed between the second base and the second positioning member; The first base comprises a first base body and a first bracket mounted on the top surface of the first base body, the first positioning assembly further comprises a first slide rail mounted on the side of the first bracket and a first slider slidably mounted on the first slide rail, the first positioning member is mounted on the first slider to move between the first position and the second position, a first mounting portion is convexly provided on the top surface of one end of the first bracket facing away from the second positioning assembly, the first mounting portion is provided with a first assembling hole, the first adjusting member is mounted in the first assembling hole, a driving end of the first adjusting member is connected to the first positioning member to drive the first positioning member to move between the first position and the second position, and a stopper is convexly provided on the top surface of one end of the first bracket facing the second positioning assembly; The second base includes a second base body and a second bracket installed on the top surface of the second base body, the second positioning assembly also includes a second slide rail installed on the side of the second bracket and a second slider slidably installed on the second slide rail, the second positioning member is installed on the second slider to move between the third position and the fourth position, the top surface of the second bracket at one end facing away from the first positioning assembly is provided with a first convex portion, the end of the second slider at one end facing away from the first positioning assembly is provided with a blind hole, one end of the first elastic member is installed in the blind hole, and the other end abuts against the first convex portion; The positioning fixture also includes: A third positioning assembly includes a third base, a third driving cylinder and a third positioning member, wherein the third base is drivingly connected to the third driving cylinder, and the third positioning member is movably disposed on the third base between a fifth position and a sixth position; a second adjusting member, mounted on the third base, for adjusting the position of the third positioning member between the fifth position and the sixth position; a fourth positioning assembly, located on both sides of the loading platform along the second direction relative to the third positioning assembly, the fourth positioning assembly comprising a fourth base, a fourth driving cylinder and a fourth positioning member, the fourth base being drivingly connected to the fourth driving cylinder, the fourth positioning member being movably disposed on the fourth base between a seventh position and an eighth position; and A second elastic member is installed between the fourth base and the fourth positioning member; The fourth positioning assembly further comprises a fourth slide rail mounted on the fourth base and a fourth slider slidably mounted on the fourth slide rail, the fourth positioning member is mounted on the fourth slider to move between the seventh position and the eighth position, a second convex portion is convexly provided on the top surface of one end of the fourth base facing away from the third positioning assembly, a third convex portion is convexly provided on the top surface of the fourth positioning member, the third convex portion is provided with a countersunk hole, one end of the second elastic member is connected to the second convex portion, and the other end is connected to the countersunk hole; The fourth positioning member includes a second connecting seat installed on the fourth sliding block and a positioning rotating block rotatably installed on the second connecting seat, the third protrusion is protruding on the top surface of the second connecting seat, the positioning rotating block is cylindrical, and the positioning rotating block partially protrudes from the side of the second connecting seat facing the loading platform.

2. The positioning fixture according to claim 1, characterized in that: The third positioning assembly also includes a third slide rail installed on the third base, a third slider slidably installed on the third slide rail and a third elastic member. The third positioning member is installed on the third slider to move between the fifth position and the sixth position. The top surface of the third base is convexly provided with a second mounting portion, the second mounting portion is provided with a second assembling hole, the second adjusting member is installed in the second assembling hole, and the driving end of the second adjusting member is connected to the third positioning member to drive the third positioning member to move between the fifth position and the sixth position. One end of the third elastic member is connected to the top surface of the third base, and the other end is connected to the third positioning member.

3. The positioning fixture according to claim 2, characterized in that: The third positioning member includes a first connecting seat and a positioning rod extending along the second direction. The first connecting seat is provided with a mounting hole extending along the second direction. The positioning rod is installed in the mounting hole. The first connecting seat is provided with an adjustment gap. The adjustment gap is used to connect the mounting hole with the external environment. One end of the third elastic member is connected to the first connecting seat, and the other end is connected to the top surface of the third base.

4. The positioning fixture according to claim 3, characterized in that: A positioning head is provided at one end of the positioning rod facing the fourth positioning assembly, and a guiding slope is provided on the side of the positioning head. The guiding slope is inclined from the side of the positioning head to the middle of the positioning head.

5. A polishing device, characterized in that: It comprises a loading platform and a positioning fixture as described in any one of claims 1 to 4.

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