CN112720279B

CN112720279B - Jig tool

Info

Publication number: CN112720279B
Application number: CN202011485393.1A
Authority: CN
Inventors: 刘春光; 罗益方
Original assignee: Guangdong Evenwin Precision Technology Co Ltd
Current assignee: Guangdong Evenwin Precision Technology Co Ltd
Priority date: 2020-12-16
Filing date: 2020-12-16
Publication date: 2022-03-29
Anticipated expiration: 2040-12-16
Also published as: CN112720279A

Abstract

The application relates to a jig. After the product is installed on the installation position, the first area can be covered through the matching effect of the cover plate and the shielding piece, and after the sand blasting operation is performed, the second area is exposed, so that the sand effect of the second area is different from that of the first area. After the cover plate is covered on a product, the first edge protrudes out of the cover plate, so that the first edge can be abutted against a boundary between the first area and the second area when the first edge is overlapped with the boundary, and therefore, during sand blasting operation, spray cannot cross the boundary to enter the first area due to blocking of the first edge, and a clear sand effect boundary is formed between the first area and the second area. In addition, only need lock the product on the tool, can carry out the sandblast operation to after the operation take off the product can, easy operation is convenient. The jig is not easy to be damaged and can be repeatedly used, so that the consumable loss cost of sticking films or printing ink is avoided, and the production cost is reduced.

Description

Jig tool

Technical Field

The invention relates to the technical field of surface processing of electronic products, in particular to a jig.

Background

In the surface processing process of the back shell in electronic products such as mobile phones, flat panels, and notebooks, in order to make the back shell exhibit various sand blasting effects and to make a clear boundary between two adjacent sand effect areas, a conventional operation mode is to shield one area by using a film or an exposure and development shielding mode and to make the other area exposed, and then to sand blast the exposed area, so that the two areas exhibit different sand effects.

However, the above operation methods result in large consumption of consumables such as a film or ink, and high production cost, and the operation is complicated whether the film is applied or the ink is coated, and the boundary is easily blurred, so that a clear sand effect boundary cannot be obtained.

Disclosure of Invention

Therefore, a jig which is low in cost, simple in operation and capable of forming a clear sand effect boundary is needed.

A jig, comprising:

the base is provided with a mounting position, and the mounting position is used for mounting a product;

the shielding assembly comprises a cover plate and a shielding piece arranged on the cover plate; the cover plate is covered on the product, can cover the first area on the product and exposes the second area on the product; the covering element has a first edge projecting from the cover plate on the side facing the base, which first edge can be brought into contact with the product when the cover plate covers the first region and coincides with the boundary between the first region and the second region.

After the product is installed on the installation position, the first area can be covered through the matching effect of the cover plate and the shielding piece, and after the sand blasting operation is performed, the second area is exposed, so that the sand effect of the second area is different from that of the first area. In addition, after the cover plate is covered on the product, the first edge protrudes out of the cover plate, so that the first edge can be abutted against a boundary between the first area and the second area when the first edge is overlapped with the boundary, and therefore, during sand blasting operation, spray cannot cross the boundary and enter the first area due to blocking of the first edge, and a clear sand effect boundary is formed between the first area and the second area. In addition, when the product needs to be subjected to surface treatment to obtain two sand effect areas, the first area is not required to be attached with a film or coated with printing ink, the product only needs to be locked on the jig, sand blasting operation can be performed, and the product can be taken down after the operation is finished, so that the operation is simple and convenient. In addition, the jig is not easy to be damaged and can be repeatedly used, so that the consumable loss cost of sticking films or printing ink is avoided, and the production cost is reduced.

In one embodiment, the shielding part is provided with an abutting surface protruding out of the cover plate and facing to one side of the base, and the abutting surface can be attached to the first area when the cover plate covers the first area.

In one embodiment, a mounting groove is formed in one side of the cover plate facing the base, and one side of the shielding member away from the abutting surface is mounted in the mounting groove.

In one embodiment, the jig comprises a plurality of pressing components arranged on the base, and the pressing components are at least distributed on two opposite sides of the cover plate so as to press the cover plate on the base.

In one embodiment, the cover plate is pivotally connected to the base on a side thereof remote from the shield.

In one embodiment, the boundary between the first region and the second region extends in the thickness direction of the product to form an extension; the shield assembly includes a shield having a second edge that can be placed against the product and that coincides with the extension section.

In one embodiment, the shutter assembly includes a lateral slide mounted on the base and connected to the shutter to drive the shutter toward and away from the product.

In one embodiment, the lateral sliding structure includes a fixing member, a sliding block and a driving member, the fixing member is fixedly connected to the base, the sliding block is slidably connected to the fixing member, the shielding member is installed at one end of the sliding block, the driving member is connected to the other end of the sliding block, and the driving member can drive the sliding block and the shielding member to move synchronously.

In one embodiment, the driving piece comprises a stop block, a connecting shaft and a handle; the stop block is fixedly connected with the base, the connecting shaft penetrates through the stop block, one end of the connecting shaft is connected with the sliding block, and the other end of the connecting shaft is rotatably connected with the handle; the handle has a first state and a second state which can stably abut against the stop block, the rotating connection center point of the handle and the connecting shaft is away from the stop block by a preset distance, and the preset distance is different from the first state and the second state.

In one embodiment, the base is provided with a plurality of mounting positions, the shielding assemblies are in one-to-one correspondence with the mounting positions, and the shielding assemblies are arranged in the same direction.

Drawings

FIG. 1 is a schematic view of the product as a mobile phone case;

FIG. 2 is a schematic structural view illustrating a product mounted on a jig according to an embodiment of the present invention;

FIG. 3 is an exploded view of the fixture shown in FIG. 1;

FIG. 4 is a schematic view of the fixture shown in FIG. 3 from another view angle;

FIG. 5 is an enlarged view of the structure at A in FIG. 4;

FIG. 6 is a schematic view of the installation of the shielding member on the lateral sliding structure of the jig shown in FIG. 2;

fig. 7 is an exploded view of the structure shown in fig. 6.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1 to 5, a fixture 10 according to an embodiment of the present invention is used for clamping a rear case product in a device such as a mobile phone, a tablet, a notebook, etc. so as to perform a surface treatment on the product. Specifically, the jig 10 includes a base 11 and a shielding assembly 12. Wherein, the base 11 is formed with an installation site on which the product 20 to be processed can be installed. The shutter assembly 12 includes a cover plate 400 and a shutter 300 mounted on the cover plate 400. After the product 20 is mounted on the mounting site, the cover 400 covers the product 20 and covers the first area 23 of the product 20 and exposes the second area 24 of the product 20. The covering element 300 has a first edge 310 projecting from the cover 400 towards the base 11, which first edge 310 is able to abut against the product 20 when the cover 400 covers the first area and coincides with the dividing line 25 between the first area and the second area.

In this way, after the product 20 is mounted on the mounting position, the first area 23 can be covered by the cooperation of the cover plate 400 and the shielding member 300, and after the sand blasting operation is performed, the sand blasting effect of the second area can be different from that of the first area due to the fact that the second area 24 is exposed. In addition, after the cover plate 400 is covered on the product 20, since the first edge 310 protrudes from the cover plate 400, the first edge 310 can abut against a boundary between the first region and the second region when the boundary coincides with the first edge 310, so that the blasting material cannot cross the boundary and enter the first region due to the blocking of the first edge 310 during the blasting operation, and a clear sanding boundary is formed between the first region and the second region. In addition, when the product 20 needs to be subjected to surface treatment to obtain two sand effect areas, a film does not need to be attached to the first area or ink is coated on the first area, the product 20 only needs to be locked on the jig 10, sand blasting operation can be performed, and the product 20 is taken down after the operation is finished, so that the operation is simple and convenient. In addition, the jig 10 is not easy to be damaged and can be repeatedly used, so that the consumable loss cost of sticking films or printing ink is avoided, and the production cost is reduced.

It should be noted that, according to the appearance effect of the product 20, two or more regions may be arbitrarily defined on the surface of the product 20, and the first region and the second region mentioned above only represent two regions with different sand effects adjacent to the surface of the product 20. In addition, the boundary between the first region and the second region before the blasting operation is not an actual boundary, but a virtual boundary between the first region and the second region, which is also externally presented by a finally formed clear sanding boundary after the blasting operation.

Specifically, as shown in fig. 1, 3 and 4, the product 20 has a functional hole 21 such as a camera hole and an exposure hole, the base 11 is provided with a positioning column 110 in a protruding manner, and the positioning column 110 is matched with the functional hole 21, so as to limit the installation of the product 20 on the base 11. The product 20 is provided with a functional groove 22 for subsequent assembly, the base 11 is provided with a positioning groove 120 capable of accommodating a flange surrounding the functional groove 22, and the positioning groove 120 can limit the installation of the product 20. The base 11 is formed with a positioning surface 130 which can be attached to the surface of the product 20, and the positioning surface 130 is attached to the surface of the product 20 to stably support the product 20, so that the cover plate 400 stably presses the product 20 onto the positioning surface 130 after the cover plate 400 covers the product 20. It can be understood that the positioning columns 110, the positioning grooves 120 and the positioning surfaces 130 form a positioning for stably mounting the product 20 on the base 11, so as to stably mount the product 20 on the base 11 at a mounting position defined by the positioning columns 110, the positioning grooves 120 and the positioning surfaces.

As shown in fig. 2 to 5, specifically, the cover plate 400 has a flat plate structure, so as to have a large area and cover the first area and all areas needing to be covered except the first area after covering the product 20. The cover plate 400 is provided with the groove 410 on one side facing the product 20, so that the contact area of the cover plate 400 and the product 20 is reduced, the surface damage to the product 20 can be reduced, the spaced force application to the product 20 can be realized, the product 20 can release and compress the warping deformation caused by compression, and the stable compression is achieved.

In one embodiment, the shielding member 300 has an abutting surface 320 protruding from the cover 400 toward a side of the base 11, and the abutting surface 320 can be attached to the first area when the cover 400 covers the first area. It can be appreciated that the engagement of the abutting surface 320 with the first region can enable the shielding member 300 to smoothly abut against the product 20, thereby preventing the shielding member 300 from shaking during the sand blasting process. In addition, the first edge 310 is at least a part of the edge surrounding the abutting surface 320. It is understood that, in the present embodiment, the abutting surface 320 is a rectangle, and the first edge 310 is one edge of the rectangle. In other embodiments, the first edge 310 may also be the edge of the abutting surface 320. Thus, the first edge 310 and the abutting surface 320 are both attached to the product 20, so that the spraying material can be further prevented from permeating from the first edge 310 to the first area, and a clearer sand effect boundary can be obtained.

Specifically, a mounting groove 420 is formed on one side of the cover 400 facing the base 11, and one side of the shielding member 300 away from the abutting surface 320 is mounted in the mounting groove 420. It should be noted that the mounting groove 420 does not penetrate the cover 400 in the thickness direction of the cover 400, and is disposed such that the cover 400 can also act on the shielding member 300 to press the shielding member 300 against the product 20 when pressing the product 20.

In addition, a material reducing notch 430 is formed on one side of the cover plate 400, which is away from the mounting groove 420, so that the thickness of the position, opposite to the shielding member 300, of the cover plate 400 is reduced, and the pressure of the cover plate 400 on the shielding member 300 is further reduced. And the installation of the installation groove 420 may allow the shielding member 300 to have a large thickness. In this way, the stress of the cover 400 on the shielding element 300 is reduced, and the deformation degree of the shielding element 300 is reduced, so as to avoid the shielding element 300 from being deformed greatly to influence the coincidence degree of the first edge 310 and the boundary line between the first region and the second region. In addition, the covering member 300 has elasticity and can be slightly deformed so as to be well attached to the surface of the product 20, thereby preventing the clearance from the product 20 and reducing the definition of the sand effect boundary.

Further, the mounting groove 420 extends to the edge of the cover plate 400 and penetrates the side surface of the cover plate 400, so that after the shielding member 300 is mounted in the mounting groove 420, the side surface of the shielding member 300 can be flush with the side surface of the cover plate 400, thereby preventing the first edge 310 from being shielded by the cover plate 400, facilitating the sand blasting, and spraying the sand to the first edge 310, thereby forming a clear sand effect boundary.

Specifically, the cover plate 400 is provided with a release groove 440, and the release groove 440 is communicated with the mounting groove 420 and is located at an edge position of the mounting groove 420. Because the shielding element 300 has elasticity, in order to make the shielding element 300 closely fit with the inner wall surface of the mounting groove 420, the shielding element 300 needs to be installed in the mounting groove 420 in a squeezing state, the edge position of the shielding element 300 can partially extend into the releasing groove 440 by arranging the releasing groove 440, and the squeezing acting force of the mounting groove 420 on the shielding element 300 is absorbed by the releasing groove 440, so that the first edge 310 and the abutting surface 320 are prevented from deforming due to the squeezing action of the mounting groove 420, and the first edge 310 and the abutting surface 320 of the shielding element 300 are maintained in a normal state.

Specifically, because the shielding element 300 is disposed on the cover plate 400 near the second region, and one side of the cover plate 400 far from the shielding element 300 is rotatably connected to the base 11, after the product 20 is mounted on the base 11, the shielding element 300 can be driven to move only by rotating the cover plate 400, so that the product 20 is compressed or released, and the operation is simple and convenient.

Specifically, the base 11 is provided with the connecting seat 140, the cover plate 400 is provided with a connecting hole (not shown), and the rotating shaft (not shown) penetrates through the connecting seat 140 and the connecting hole, so that the cover plate 400 is rotatably connected with the base 11. Specifically, the connection holes penetrate through the opposite two side surfaces of the cover plate 400, two connection seats 140 are correspondingly installed on the base 11, and the rotation shaft penetrates through the connection holes, and the two ends of the rotation shaft respectively penetrate through the two connection seats 140, so that the cover plate 400 can rotate stably. Further, a handle 450 is mounted on the cover plate 400, so that a person can operate the handle 450 by hand to rotate the cover plate 400.

In one embodiment, the fixture 10 includes a plurality of pressing members 13 mounted on the base 11, and the plurality of pressing members 13 are disposed on at least two opposite sides of the cover 400 to press the cover 400 onto the base 11. After the cover plate 400 and the shielding member 300 are covered on the product 20 together, the cover plate 400 and the shielding member 300 are pressed on the product 20 by the pressing assembly 13, thereby achieving stable locking of the product 20. In this embodiment, the number of the pressing assemblies 13 is two, and the two pressing assemblies 13 are disposed opposite to each other and are respectively located on two opposite sides of the cover plate 400. Due to the connection effect of the rotating shaft, the cover plate 400 and the connecting seat 140, two force applying points are provided for the cover plate 400 to compress the product 20, and therefore, the two compressing assemblies 13 perform compression locking on the movable side of the cover plate 400 during rotation. In addition, in this embodiment, the pressing component 13 is specifically a shaft clamp, and the detailed structure thereof is not described again. It should be noted that, in other embodiments, more than two pressing assemblies 13 may be provided, so that the plurality of pressing assemblies 13 are uniformly distributed around the cover plate 400, and the cover plate 400 is stably pressed down.

Referring to fig. 1, 2, 6 and 7, in the embodiment, the product 20 is a mobile phone case with a relatively large thickness, and when the side surface of the mobile phone case needs to form a clear sand boundary with the bottom surface, the boundary 25 between the first region and the second region is defined to extend in the thickness direction of the product 20 to form an extension section 26. At this point, the screen assembly 12 includes a screen 500, the screen 500 having a second edge 510, the second edge 510 being capable of abutting the product 20 and coinciding with the extension 26. In this manner, the second edge 510 is properly butted against the first edge 310 to form a complete and clear sand effect boundary after the sand blasting operation. It is to be noted that the shield 500 extends in the thickness direction of the product 20 and has a height greater than the thickness of the product 20 to enable complete coverage of the product 20 throughout the thickness direction of the product 20. Further, the covering member 500 has an abutting surface 520, and the abutting surface 520 abuts against the side surface of the product 20, so as to realize smooth contact between the covering member 500 and the product 20. In addition, the second edge 510 forms the edge of the abutting surface 520, so that both the second edge 510 and the abutting surface 520 can be attached to the side surface of the product 20, a large area of attaching coverage is formed, the condition that the spraying material penetrates from the second edge 510 to the side surface of the product 20, which needs to be shielded, is avoided, and a clear sand effect boundary is obtained.

Specifically, the shutter assembly 12 includes a lateral slide 600 mounted to the base 11, the lateral slide 600 being connected to the shutter 500 to drive the shutter 500 toward and away from the product 20. Specifically, the number of the lateral sliding structures 600 and the shielding member 500 is two, and the two sets of structures correspond to two opposite sides of the product 20, so that the product 20 with a three-segment structure is formed by adapting the sand effect boundary. It should be noted that, in other embodiments, the shielding member 500 is integrally formed with the shielding member 300, in this case, the shielding member 500 and the shielding member 300 are pressed against the product 20 together with the covering of the product 20 by the cover plate 400, and in this case, the lateral sliding structure 600 can press the shielding member 500 against the side surface of the product 20.

Further, the cover plate 400 can cover the shielding member 500 and at least a portion of the side sliding structure 600, so that spraying on the area to be shielded on the side of the product 20 during sandblasting can be avoided. It will be appreciated that the cover plate 400, the shield 500 and the partial side slide 600 cooperate to provide shielding of the desired shielded area on the side of the product 20.

Specifically, the lateral sliding structure 600 includes a fixed part 610, a sliding block 620 and a driving part 630, the fixed part 610 is fixedly connected with the base 11, the sliding block 620 is slidably connected with the fixed part 610, the shutter 500 is installed at one end of the sliding block 620, the driving part 630 is connected to the other end of the sliding block 620, and the driving part 630 can drive the sliding block 620 and the shutter 500 to move synchronously. Further, the fixing member 610 is provided with a sliding slot (not shown) through the opening, the sliding block 620 is accommodated in the sliding slot and is matched with the sliding slot, and the sliding block 620 slides along the sliding slot, so as to realize the sliding connection with the fixing member 610.

Specifically, in the present embodiment, the driving member 630 includes a stopper 631, a connecting shaft 632, and a handle 633. The stopper 631 is fixedly connected to the base 11, and the connecting shaft 632 penetrates the stopper 631, and has one end connected to the slider 620 and the other end rotatably connected to the handle 633. The handle 633 has a first state and a second state which can stably abut against the stopper 631, the distance between the handle 633 and the rotation connecting center point of the connecting shaft 632 is a predetermined distance from the stopper 631, and the predetermined distance is different between the first state and the second state. It can be understood that the handle 633 can be kept in the first state or the second state by rotating the handle 633, and due to the different predetermined intervals in the two states, when the handle 633 is rotated, the connecting shaft 632 can drive the sliding block 620 to slide relative to the fixed block, so that the sliding block 620 can drive the shielding member 500.

Specifically, the handle 633 comprises a holding portion 634 and a connecting portion 635 connected to the holding portion 634, the connecting portion 635 is rotatably connected to the connecting shaft 632, and a human hand can operate the holding portion 634. The connecting portion 635 has a first contact surface 636 and a second contact surface 637 opposing the first contact surface 636, and the handle 633 is in a first state when the first contact surface 636 is in contact with the stopper 631, and the handle 633 is in a second state when the second contact surface 637 is in contact with the stopper 631. The rotation connecting center of the connecting shaft 632 and the connecting portion 635 is eccentric, the rotation connecting center is closer to the first attaching surface 636 and farther from the second attaching surface 637, so that in the first state, the distance between the rotation connecting center and the first attaching surface 636 is equal to the predetermined distance, and thus, the connecting shaft 632 pushes the slider 620 and the shielding member 500 to be close to the side of the product 20. In the second state, the distance between the center of the rotational connection and the second abutting surface 637 is equal to the predetermined distance, so that the connecting shaft 632 pulls the slider 620 and the shielding member 500 away from the side of the product 20. It should be noted that the first abutting surface 636 and the second abutting surface 637 have smooth transition surfaces therebetween, so that the connecting portion 635 can maintain contact with the stopper 631 to smoothly transition from the first state to the second state.

Specifically, in the present embodiment, two mounting positions are formed on the base 11, two shielding assemblies 12 are provided, and the two shielding assemblies 12 correspond to the two mounting positions one by one. It can be understood that two products 20 can be installed on the base 11, and the two groups of shielding components 12 shield the two products 20, so that the sand blasting of the two products 20 can be completed at one time when the jig is subjected to the sand blasting operation, and the processing efficiency is improved. In other embodiments, other numbers of mounting locations may be provided on the base 11, and the number of shutter assemblies 12 may be matched to the number of mounting locations. Further, a limiting block 150 is disposed between the two mounting positions, and the limiting block 150 can divide the two cover plates 400 of the two shielding assemblies 12 to limit the rotation angle of the cover plate 400, so as to prevent the cover plate 400 from being pressed on the other cover plate 400 due to an excessively large rotation angle.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A jig, comprising:

the shielding assembly comprises a cover plate and a shielding piece arranged on the cover plate; the cover plate is covered on the product, can cover the first area on the product and exposes the second area on the product; the covering part is provided with a first edge protruding out of the cover plate and facing to one side of the base, the first edge can be tightly attached to the product when the cover plate covers the first area, and the first edge is coincided with a boundary line between the first area and the second area;

a boundary line between the first region and the second region extends in a thickness direction of the product to form an extension section; the shield assembly comprises a shield having a second edge adapted to fit against the product and to coincide with the extension section; the shutter assembly includes a lateral sliding structure mounted on the base and connected to the shield to drive the shield toward or away from the product.

2. The fixture according to claim 1, wherein the shielding member has an abutting surface protruding from the cover plate toward a side of the base, and the abutting surface is capable of abutting against the first region when the cover plate covers the first region.

3. The fixture according to claim 2, wherein a mounting groove is formed on one side of the cover plate facing the base, and one side of the shielding member away from the abutting surface is mounted in the mounting groove.

4. The fixture according to claim 1, wherein the fixture includes a plurality of pressing members mounted on the base, the plurality of pressing members being distributed at least on opposite sides of the cover plate to press the cover plate onto the base.

5. The fixture according to claim 1, wherein a side of the cover plate away from the shielding member is rotatably connected to the base.

6. The jig of claim 1, wherein the shield is resilient.

7. The jig of claim 1, wherein the cover plate is capable of covering the shield and at least part of the lateral sliding structure.

8. The jig of claim 1, wherein the lateral sliding structure comprises a fixing member, a sliding block and a driving member, the fixing member is fixedly connected with the base, the sliding block is slidably connected with the fixing member, the shielding member is installed at one end of the sliding block, the driving member is connected to the other end of the sliding block, and the driving member can drive the sliding block and the shielding member to move synchronously.

9. The jig of claim 8, wherein the driving member comprises a stopper, a connecting shaft and a handle; the stop block is fixedly connected with the base, the connecting shaft penetrates through the stop block, one end of the connecting shaft is connected with the sliding block, and the other end of the connecting shaft is rotatably connected with the handle; the handle has a first state and a second state which can stably abut against the stop block, the rotating connection center point of the handle and the connecting shaft is away from the stop block by a preset distance, and the preset distance is different from the first state and the second state.

10. The fixture according to claim 1, wherein the base has a plurality of mounting locations formed thereon, the shielding members are provided in plurality, and the plurality of shielding members correspond to the plurality of mounting locations one to one.