CN111250879B

CN111250879B - Jig tool

Info

Publication number: CN111250879B
Application number: CN201811454129.4A
Authority: CN
Inventors: 吴玉农; 庞云飞
Original assignee: Jabil Circuit Singapore Pte Ltd
Current assignee: Jabil Circuit Singapore Pte Ltd
Priority date: 2018-11-30
Filing date: 2018-11-30
Publication date: 2022-04-05
Anticipated expiration: 2038-11-30
Also published as: CN111250879A

Abstract

A jig is suitable for being used for setting a workpiece so as to carry out laser engraving on the workpiece through a laser engraving device, wherein the workpiece is provided with a part to be engraved. The jig comprises a base, a bearing unit, a positioning unit and a driving unit. The bearing unit is slidably arranged on the base and can be used for fixing the workpiece. The positioning unit is provided with a positioning part corresponding to the target position of the laser emitted by the laser engraving device. The driving unit is used for driving the bearing module to slide towards the positioning part of the positioning unit, so that the part to be engraved of the workpiece is abutted against the positioning part of the positioning unit and is engraved by the laser emitted by the laser engraving device.

Description

Jig tool

Technical Field

The present invention relates to a jig, and more particularly, to a jig for assisting laser engraving.

Background

Generally, when a workpiece is subjected to laser engraving, a jig is required to fix the position of the workpiece so that a portion to be engraved of the workpiece is positioned on a focusing plane focused by a laser engraving device, however, when the workpiece is fixedly arranged on the jig, the workpiece is easily deformed or an installation gap is formed between the workpiece and the jig due to the tolerance between the workpiece and the jig, and no matter which of the two conditions is adopted, a positional deviation may be generated between the portion to be engraved of the workpiece and the focusing plane, and further, the processing yield of laser engraving is poor.

Disclosure of Invention

Accordingly, the present invention is directed to a jig capable of overcoming at least one of the disadvantages of the related art.

Therefore, the jig is suitable for being provided for a workpiece to be subjected to laser engraving by a laser engraving device, wherein the workpiece is provided with a first section to be engraved and the first section to be engraved is provided with at least one first part to be engraved. The jig comprises a base, a bearing unit, a positioning unit and a driving unit. The bearing unit is arranged on the base and provided with a bearing module capable of sliding along a first direction relative to the base, and the bearing module is provided with a bearing part suitable for fixedly arranging the workpiece. The positioning unit is arranged on the base and is provided with a first positioning part which is suitable for being abutted by a first section to be etched of the workpiece, and the first positioning part is opposite to the first section to be etched adjacent to the first section to be etched along the first direction. The driving unit is used for driving the bearing module to slide relative to the base, and after the driving unit drives the bearing module to slide towards the first positioning part of the positioning unit along the first direction, the part, adjacent to the first part to be etched, of the first section to be etched of the workpiece abuts against the first positioning part of the positioning unit.

According to the jig, the workpiece is further provided with a second section to be engraved, the second section to be engraved is provided with at least one second part to be engraved, the bearing module can slide along a second direction relative to the base, the positioning unit is further provided with a second positioning part which is suitable for being abutted by the second section to be engraved of the workpiece, the second positioning part is opposite to the part, adjacent to the second part to be engraved, of the second section to be engraved along the second direction, and when the driving unit drives the bearing module to slide towards the second positioning part of the positioning unit along the second direction, the part, adjacent to the second part to be engraved, of the second section to be engraved of the workpiece is abutted against the second positioning part of the positioning unit.

The jig of the invention is characterized in that the workpiece has two first to-be-etched sections arranged at intervals along the first direction and two second to-be-etched sections arranged at intervals along the second direction and connected between the first to-be-etched sections, the positioning unit has a plurality of first positioning portions, the first positioning portions are distributed at two opposite sides of the bearing portion in the first direction to correspond to the first to-be-etched sections of the workpiece, the first positioning portions are suitable for being abutted by the corresponding first to-be-etched sections, the positioning unit has a plurality of second positioning portions, the second positioning portions are distributed at two opposite sides of the bearing portion in the second direction to correspond to the second to-be-etched sections of the workpiece, and the second positioning portions are suitable for being abutted by the corresponding second to-be-etched sections.

The jig comprises a base, a bearing module and a sliding mechanism, wherein the bearing unit further comprises the sliding mechanism connected between the base and the bearing module, the sliding mechanism is provided with at least one first guide rail sliding block set, a first connecting seat, at least one second guide rail sliding block set and a second connecting seat, the first guide rail sliding block set is connected between the base and the first connecting seat so that the first connecting seat can slide along the first direction relative to the base, the second guide rail sliding block set is connected between the first connecting seat and the second connecting seat so that the second connecting seat can slide along the second direction relative to the first connecting seat, and the bearing module is arranged on the second connecting seat so that the bearing module can slide along the first direction and the second direction relative to the base.

In the jig of the present invention, the positioning unit has two first positioning members disposed on the base and respectively located at two opposite sides of the carrying portion in the first direction, and two second positioning members disposed on the base and respectively located at two opposite sides of the carrying portion in the second direction, each of the first positioning members has the first positioning portion, and each of the second positioning members has the second positioning portion.

The jig comprises a base, a first connecting seat, a second connecting seat, a driving unit and a second driving module, wherein the driving unit comprises two first driving modules which are arranged on the base and are positioned at two opposite sides of the first connecting seat in the first direction, and two second driving modules which are arranged on the base and are positioned at two opposite sides of the second connecting seat in the second direction, the first driving module is provided with a fixing piece arranged on the base and a pushing and supporting mechanism which is arranged on the fixing piece in a sliding mode along the first direction relative to the fixing piece and is used for pushing and supporting the first connecting seat, and the second driving module is provided with a fixing piece arranged on the base and a pushing and supporting mechanism which is arranged on the fixing piece in a sliding mode along the second direction relative to the fixing piece and is used for pushing and supporting the second connecting seat.

In the jig of the invention, each pushing mechanism is provided with a pushing block, a pushing column which is arranged on the pushing block and used for pushing the sliding mechanism so as to enable the bearing module to slide, and a supporting spring which is sleeved on the pushing column and connected to the pushing block so as to push against the sliding mechanism, and when the bearing module does not slide relative to the base, the supporting spring enables the workpiece to be spaced from the first positioning part and the second positioning part by a certain distance.

The jig further comprises a base and a first rotating mechanism, wherein the first rotating mechanism is connected between the base and the base so that the base can rotate relative to the base around a first rotating shaft perpendicular to the first direction and the second direction.

The jig further comprises a second rotating mechanism, and the base is arranged on the second rotating mechanism so that the base can rotate around a second rotating shaft perpendicular to the first rotating shaft.

Therefore, the jig is suitable for being arranged on a workpiece to carry out laser engraving on the workpiece through a laser engraving device, and the workpiece is provided with a part to be engraved. The jig comprises a base, a bearing unit, a positioning unit and a driving unit. The bearing unit is slidably arranged on the base and can be used for fixing the workpiece. The positioning unit is provided with a positioning part corresponding to the target position of the laser emitted by the laser engraving device. The driving unit is used for driving the bearing module to slide towards the positioning part of the positioning unit, so that the part to be engraved of the workpiece is abutted against the positioning part of the positioning unit and is engraved by the laser emitted by the laser engraving device.

The invention has the beneficial effects that: the driving unit drives the bearing unit to enable the workpiece to abut against the positioning unit, so that the part to be engraved of the workpiece can be well positioned, the phenomenon that the workpiece is deformed or an installation gap is formed between the workpiece and the bearing part of the jig due to the tolerance of the workpiece and the bearing part of the jig, and the position deviation between the part to be engraved of the workpiece and a focusing plane focused by the laser engraving device is caused is avoided, and the processing yield of laser engraving is improved.

Drawings

FIG. 1 is a schematic perspective view illustrating one embodiment of a jig according to the present invention;

FIG. 2 is an exploded perspective view of FIG. 1;

FIG. 3 is a schematic perspective view illustrating the carrier module and the workpiece according to the embodiment;

FIG. 4 is an exploded perspective view of FIG. 3;

fig. 5 is a schematic perspective view illustrating the sliding mechanism of the embodiment;

FIG. 6 is an exploded perspective view of FIG. 5;

fig. 7 is a schematic side view illustrating the first driving module and the sliding mechanism of the driving unit according to the embodiment;

FIG. 8 is a cross-sectional schematic view of FIG. 7; and

fig. 9 to 16 are a plurality of schematic views for explaining the steps of the present embodiment applied to laser engraving.

Detailed Description

The invention is described in detail below with reference to the following figures and examples:

referring to fig. 1 and 2, an embodiment of the jig 100 of the present invention is suitable for providing a workpiece 8 to perform laser engraving on the workpiece 8 by a laser engraving device 9 (see fig. 11), the workpiece 8 is in a rectangular ring shape in this embodiment, but not limited thereto, the workpiece 8 has two first segments to be engraved 81 arranged in parallel and spaced apart from each other, and two second segments to be engraved 82 arranged in parallel and spaced apart from each other and connected to the first segment 1 between the first segments to be engraved 8, and the length of the second segment to be engraved 82 is longer than that of the first segment to be engraved 81. Each first to-be-etched section 81 has two first to-be-etched portions 811 spaced apart from each other, and each first to-be-etched portion 811 has a first upper to-be-faceted surface 811A facing upward and a first outer to-be-faceted surface 811B facing outward. Each second to-be-etched section 82 has second to-be-etched portions 821 spaced from each other, and each second to-be-etched portion 821 has an upward-facing second upper to-be-faceted surface 821A and an outward-facing second outer to-be-faceted surface 821B. The jig 100 includes a base 1, a carrying unit 2, a positioning unit 3, a driving unit 4, a base 5, a first rotating mechanism 6, and a second rotating mechanism 7.

Referring to fig. 3 to 6, the base 1 is plate-shaped and has a central portion 11, two first extending portions 12 extending outward from the central portion 11 in a first direction D1, and two second extending portions 13 extending outward from the central portion 11 in a second direction D2 perpendicular to the first direction D1. The carrying unit 2 is disposed on the top surface of the central portion 11 of the base 1, and the carrying unit 2 has a carrying module 21 and a sliding mechanism 22 connected between the base 1 and the carrying module 2 1. The bearing module 21 has a bearing part 211 and a fastening part 212, the bearing part 211 has a bearing part 211A extending upwards and suitable for sleeving the workpiece 8, and two fastening structures 211B arranged upwards on the bearing part 211A, the bearing part 211A is composed of a plurality of convex blocks 211C, the fastening part 212 is suitable for pressing against the upper part of the workpiece 8 and is provided with two through holes 212A corresponding to the fastening structures 211B, when the workpiece 8 is arranged on the bearing part 211A, the fastening structures 211B penetrate through the fastening part 212 and then are rotated by 90 degrees to be fastened, so that the bearing part 211 and the fastening part 212 can jointly fix the workpiece 8. The sliding mechanism 22 has two first guide rail slider groups 221, a first connecting seat 222, two second guide rail slider groups 223, and a second connecting seat 224, but the number of the first guide rail slider groups 221 and the second guide rail slider groups 223 may be only one or more than three in a modified embodiment, and is not limited thereto. Each of the first guide rail slider sets 221 has a first fixed portion 221A disposed on the top surface of the central portion 11 of the base 1, and a first movable portion 221B slidably disposed on the first fixed portion 221A along the first direction D1 relative to the first fixed portion 221A and disposed on the bottom surface of the first connecting base 222, so that the first connecting base 222 can slide along the first direction D1 relative to the base 1. Each second guide rail slider group 223 has a second fixed portion 223A disposed on the top surface of the first connecting seat 222, and a second movable portion 223B slidably disposed on the second fixed portion 223A along the second direction D2 relative to the second fixed portion 223A and disposed on the bottom surface of the second connecting seat 224, so that the second connecting seat 224 can slide along the second direction D2 relative to the first connecting seat 222. The top surface of the second connecting seat 224 is detachably disposed on the carrier module 21, the carrier 211 of the carrier module 21 further has two through holes 211D, and the second connecting seat 224 has two locking structures 224A corresponding to the through holes 211D and used for locking the carrier module 21, and the carrier module 21 can be fixed to the second connecting seat 224 of the sliding mechanism 22 by screwing the locking structures 224A after penetrating the carrier 211 (in the figure, the locking structures 224A are in an unlocked state, and are in a locked state after rotating by 90 degrees). The slide mechanism 22 allows the carrying module 21 disposed on the second connecting seat 224 to slide along the first direction D1 and the second direction D2 relative to the base 1, and when the workpiece 8 is disposed on the carrying module 21 capable of sliding relative to the base 1, the first to-be-engraved segments 81 of the workpiece 8 are arranged at intervals along the first direction D1, and the second to-be-engraved segments 82 are arranged at intervals along the second direction D2.

Referring to fig. 1 and 2, the positioning unit 3 is disposed on the base 1, the positioning unit 3 has two first positioning elements 31 disposed on the top surfaces of the two first extending portions 12 of the base 1 respectively, and two second positioning elements 32 disposed on the top surfaces of the two second extending portions 13 of the base 1 respectively, the two first positioning elements 31 are distributed on two opposite sides of the carrying portion 211A of the carrying module 21 in the first direction D1 to correspond to the two first segments 81 to be etched of the workpiece 8 respectively, and the two second positioning elements 32 are distributed on two opposite sides of the carrying portion 211A of the carrying module 21 in the second direction D2 to correspond to the two second segments 82 to be etched of the workpiece 8 respectively. Each first positioning member 31 has two first positioning portions 311 extending toward the supporting portion 211A of the supporting module 21 along the first direction D1 and having a column shape, the first positioning portions 311 are adapted to be abutted by the corresponding first segment to be etched 81, and the first positioning portions 311 are opposite to each other along the first direction D1 and the first segment to be etched 81 adjacent to the first segment to be etched 811. Each second positioning member 32 has two second positioning portions 321 extending toward the bearing portion 211A of the bearing module 21 along the second direction D2 and being in a column shape, the second positioning portions 321 are adapted to be abutted by the corresponding second to-be-engraved sections 82, and the second positioning portions 321 are opposite to each other along the second direction D2 and the first to-be-engraved sections 81 adjacent to the second to-be-engraved portions 821.

Referring to fig. 1, 2, 7 and 8, the driving unit 4 includes two first driving modules 41 disposed on the base 1 and located at opposite sides of the first connecting seat 222 in the first direction D1, and two second driving modules 42 disposed on the base 1 and located at opposite sides of the second connecting seat 224 in the second direction D2. The first driving module 41 has a fixing member 411 disposed on the first extending portion 12 of the base 1, and an abutting mechanism 412 slidably disposed on the fixing member 411 along the first direction D1 with respect to the fixing member 411 and used for abutting against a side edge of the first connecting seat 222, the second driving module 42 has a fixing member 421 disposed on the second extending portion 13 of the base 1, and an abutting mechanism 422 slidably disposed on the fixing member 421 along the second direction D2 with respect to the fixing member 421 and used for abutting against a side edge of the second connecting seat 224. It should be noted that, in the present embodiment, the base further has two padding members 14 respectively disposed on the second extending portion 13 and connected to 1 between the second extending portion 13 and the fixing member 42 of the second driving module 42, and the padding member 14 is used for padding the second driving module 42, so that the height of the second driving module 42 corresponds to the second connecting seat 224. Each of the

pushing mechanisms

412 and 422 has a pushing

block

412A, 422A, a plurality of pushing

posts

412B, 422B disposed on the pushing

block

412A, 422A and respectively used for pushing against the first connecting seat 222 and the second connecting seat 224 of the sliding mechanism 22 so as to slide the carrier module 21, a plurality of supporting

springs

412C, 422C respectively sleeved on the pushing

posts

412B, 422B and connected to the pushing

block

412A, 422A so as to push against the sliding mechanism 22, and a plurality of buffer springs 412D connected between the pushing block 412A and the pushing post 412B. In this embodiment, the combination of the

fixing parts

411 and 421 and the pushing

blocks

412A and 422A is an air cylinder, but not limited thereto. The supporting

springs

412C and 422C respectively abut against the first connecting seat 222 and the second connecting seat 224, so that the first connecting seat 222 and the second connecting seat 224 are centered when not driven by the driving unit 4, and further, when the carrier module 21 does not slide relative to the base 1, the workpiece 8 is spaced from 1 between the first positioning portion 311 and the second positioning portion 32 by a certain distance. In addition, as illustrated by the first driving module, in the embodiment, an accommodating space 412E is formed in the abutting block 412A, the abutting column 412B is partially disposed in the accommodating space 412E, the buffer spring 412D is disposed in the accommodating space 412E, one end of the buffer spring is connected to the wall surface of the accommodating space 412E of the abutting block 412A far away from the abutting column 412B, and the other end of the buffer spring is connected to one end of the abutting column 412B located in the accommodating space 412E, so as to prevent the tool 100 from being damaged due to an excessive force of the

abutting columns

412B and 422B of the

abutting mechanisms

412 and 422 abutting against the sliding mechanism 22. The first connecting seat 222 or the second connecting seat 224 of the sliding mechanism 22 is pushed by the driving unit 4 to drive the carrier module 21 to slide along the first direction D1 or the second direction D2 relative to the base 1. When the driving unit 4 drives the carrying module 21 to slide along the first direction D1 toward the first positioning portion 311 of any one of the first positioning members 31 of the positioning unit 3, the first portion to be etched 811 of the first section to be etched 81 of the workpiece 8 abuts against the first positioning portion 311 of the positioning unit 3. After the driving unit 4 drives the carrying module 21 to slide toward the second positioning portion 321 of any one of the second positioning members 32 of the positioning unit 3 along the second direction D2, the portion to be engraved of the second section 82 of the workpiece 8 adjacent to the second portion 821 to be engraved abuts against the second positioning portion 321 of the positioning unit 3. The driving unit 4 pushes the bearing unit 2 to make the workpiece 8 abut against the positioning unit 3, so that the part to be engraved of the workpiece 8 can be positioned well, and the deviation of the position between the part to be engraved of the workpiece 8 and the focusing plane focused by the laser engraving device 9 caused by the deformation of the workpiece 8 or the installation gap between the workpiece 8 and the bearing part 211A of the jig 100 due to the tolerance between the workpiece 8 and the bearing part 211A of the jig 100 is avoided, so that the processing yield of laser engraving is improved.

The base 5 is located under the base 1, and the base 5 has a rectangular plate-shaped supporting portion 51 parallel to the base 1, and a circular plate-shaped setting portion 52 connected to one side edge of the supporting portion 51 and perpendicular to the supporting portion 51. The first rotating mechanism 6 is disposed on the supporting portion 51 and connected between the susceptor 1 and the supporting portion 5 of the base 5, the first rotating mechanism 6 has a fixed portion 61 disposed on the supporting portion 51, a movable portion 62 connected to the fixed portion 61 and provided for the central portion 11 of the susceptor 1, and a servo motor 63 for driving the movable portion 62, and the movable portion 62 can be driven by the servo motor 63 to rotate around a first rotation axis a1 perpendicular to the first direction D1 and the second direction D2 with respect to the fixed portion 61 and passing through the center of the carrier module 21, thereby enabling the susceptor 1 to rotate around the first rotation axis a1 with respect to the supporting portion 51 of the base 5. The second rotating mechanism 7 includes a fixed portion 71 for being mounted on a machine base (not shown) or other supporting mechanism, a movable portion 72 connected to the fixed portion 71 and provided for the mounting portion 52 of the base 5, and a servo motor (not shown) for driving the movable portion 72, wherein the movable portion 72 is capable of being driven by the servo motor to rotate about a second rotation axis a2 perpendicular to the first rotation axis a1, so that the base 5 can rotate about the second rotation axis a2 with respect to the machine base. The base 1 can rotate around the first rotation axis a1 and the second rotation axis a2 by the base 5, the first rotation mechanism 6 and the second rotation mechanism 7, so that the workpiece 8 disposed on the carrying module 21 can face the laser engraving device 9 (see fig. 11) with different facets to facilitate laser engraving.

Referring to fig. 1 and fig. 2, the following describes steps of the present embodiment applied to laser engraving.

Referring to fig. 9 and 10, the first connecting seat 222 of the sliding mechanism 22 is pushed by one of the first driving modules 41 of the driving unit 4 (see fig. 11, the first driving module 41 on the left) along the first direction D1, so that the workpiece 8 disposed on the bearing module 21 slides towards the right side in the drawing along the first direction D1, and the first to-be-engraved segment 81 on the right side of the workpiece 8 abuts against the first positioning portion 311 of the first positioning member 31 on the right side adjacent to the first to-be-engraved portion 811, respectively, so as to position the first to-be-engraved portion 811 of the first to-be-engraved segment 81 (as shown in fig. 10, fig. 9 shows a state that the bearing module 21 is not yet slid).

Referring to fig. 11, the laser engraving device 9 located above the base 1 is focused on the first upper to-be-faceted portion 811A of the first to-be-faceted portion 811 of the first to-be-faceted section 81, and emits a laser beam 91 to laser engrave the first upper to-be-faceted portion 811A.

Referring to fig. 12, the movable portion 72 of the second rotating mechanism 7 is driven to rotate 90 degrees around the second rotating axis a2 in a counterclockwise direction in the drawing, so that the base 1, the carrying unit 2 and the positioning unit 3 rotate around the second rotating axis a2 in the same manner, the first external facet 811B of the first portion to be etched 811 of the first section to be etched 81 faces the laser engraving device 9, the laser engraving device 9 focuses on the first external facet 811B of the first portion to be etched 811 of the first section to be etched 81, and a laser beam 91 is emitted to laser engrave the first external facet 811B. After that, the positioning and laser engraving are performed on the first segment to be engraved 81 on the left side in the same manner, and the steps are similar and will not be described herein again.

Referring to fig. 13 to 14, after the first driving module 41 and the second rotating mechanism 7 are reset (as shown in fig. 1), the movable portion 62 of the first rotating mechanism 6 is driven to rotate 90 degrees around the first rotation axis a1, so that the base 1, the carrying unit 2 and the positioning unit 3 rotate around the first rotation axis a1 in the same manner (as shown in fig. 13). Then, one of the second driving modules 42 of the driving unit 4 (see fig. 13, the second driving module 42 on the left side) pushes the second connecting seat 224 of the sliding mechanism 22 along the first direction D1, so that the workpiece 8 disposed on the carrying module 21 slides towards the right side in the drawing along the second direction D2, and the second to-be-engraved sections 82 of the workpiece 8 on the right side abut against the second positioning portions 321 of the second positioning members 32 on the right side respectively adjacent to the second to-be-engraved portions 821, so as to position the second to-be-engraved portions 821 of the second to-be-engraved sections 82 (as shown in fig. 14).

Referring to fig. 15, a laser engraving device 9 located above the susceptor 1 is focused on a second upper to-be-faceted surface 821A of the second to-be-engraved portion 821 of the second to-be-engraved section 82, and emits a laser beam 91 to laser engrave the second upper to-be-faceted surface 821A.

Referring to fig. 16, the movable portion 72 of the second rotating mechanism 7 is driven to rotate 90 degrees around the second rotation axis a2 in a counterclockwise direction in the drawing, so that the susceptor 1, the carrying unit 2 and the positioning unit 3 rotate around the second rotation axis a2 in the same manner, and the second external facet 821B of the second to-be-etched portion 821 of the second to-be-etched section 82 faces the laser engraving device 9, and then the laser engraving device 9 focuses on the second external facet 821B of the second to-be-etched portion 821 of the second to-be-etched section 82, and emits the laser beam 91 to laser-engrave the second external facet 821B. Then, the positioning and laser engraving are performed on the second segment to be engraved 82 on the left side in the same manner, and the steps are similar and will not be described herein again.

In summary, the bearing unit 2 is pushed by the driving unit 4 to make the workpiece 8 abut against the positioning unit 3, so that the portion of the workpiece 8 to be engraved can be positioned better, and the deviation in position between the portion of the workpiece 8 to be engraved and the focusing plane focused by the laser engraving device 9 caused by the deformation of the workpiece 8 or the installation gap between the workpiece 8 and the bearing portion 211A of the jig 100 due to the tolerance between the workpiece 8 and the bearing portion 211A of the jig 100 is avoided, thereby improving the processing yield of laser engraving.

Claims

1. A jig is suitable for being provided with a workpiece to carry out laser engraving on the workpiece through a laser engraving device, wherein the workpiece is provided with a first section to be engraved and at least one first part to be engraved; it is characterized in that the jig comprises:

a base;

the bearing unit is arranged on the base and provided with a bearing module capable of sliding along a first direction relative to the base, and the bearing module is provided with a bearing part suitable for fixedly arranging the workpiece;

the positioning unit is arranged on the base and provided with a first positioning part which is suitable for being abutted by a first section to be etched of the workpiece, and the first positioning part is opposite to the first section to be etched adjacent to the first section to be etched along the first direction; and

and the driving unit is used for driving the bearing module to slide relative to the base, and after the driving unit drives the bearing module to slide towards the first positioning part of the positioning unit along the first direction, the part, adjacent to the first part to be engraved, of the first section of the workpiece abuts against the first positioning part of the positioning unit.

2. The jig of claim 1, wherein: the workpiece is further provided with a second section to be engraved, the second section to be engraved is provided with at least one second part to be engraved, the bearing module can further slide along a second direction relative to the base, the positioning unit is further provided with a second positioning part suitable for being abutted by the second section to be engraved of the workpiece, the second positioning part and the part, adjacent to the second part to be engraved, of the second section to be engraved of the workpiece are opposite to each other along the second direction, and after the driving unit drives the bearing module to slide towards the second positioning part of the positioning unit along the second direction, the part, adjacent to the second part to be engraved, of the second section to be engraved of the workpiece is abutted against the second positioning part of the positioning unit.

3. The jig of claim 2, wherein: the workpiece is provided with two first to-be-etched sections which are arranged at intervals along the first direction and two second to-be-etched sections which are arranged at intervals along the second direction and are connected between the first to-be-etched sections, the positioning unit is provided with a plurality of first positioning parts, the first positioning parts are distributed at two opposite sides of the bearing part in the first direction to correspond to the first to-be-etched sections of the workpiece, the first positioning parts are suitable for being abutted by the corresponding first to-be-etched sections, the positioning unit is provided with a plurality of second positioning parts, the second positioning parts are distributed at two opposite sides of the bearing part in the second direction to correspond to the second to-be-etched sections of the workpiece, and the second positioning parts are suitable for being abutted by the corresponding second to-be-etched sections.

4. The jig of claim 3, wherein: the bearing unit further comprises a sliding mechanism connected between the base and the bearing module, the sliding mechanism is provided with at least one first guide rail sliding block set, a first connecting seat, at least one second guide rail sliding block set and a second connecting seat, the first guide rail sliding block set is connected between the base and the first connecting seat so that the first connecting seat can slide along the first direction relative to the base, the second guide rail sliding block set is connected between the first connecting seat and the second connecting seat so that the second connecting seat can slide along the second direction relative to the first connecting seat, and the bearing module is arranged on the second connecting seat so that the bearing module can slide along the first direction and the second direction relative to the base.

5. The jig of claim 3, wherein: the positioning unit is provided with two first positioning pieces arranged on the base and respectively positioned at two opposite sides of the bearing part in the first direction and two second positioning pieces arranged on the base and respectively positioned at two opposite sides of the bearing part in the second direction, wherein each first positioning piece is provided with the first positioning part, and each second positioning piece is provided with the second positioning part.

6. The jig of claim 4, wherein: the drive unit comprises two first drive modules arranged on the base and positioned at two opposite sides of the first connecting seat in the first direction and two second drive modules arranged on the base and positioned at two opposite sides of the second connecting seat in the second direction, the first drive module is provided with a fixing piece arranged on the base and a pushing and supporting mechanism which can be arranged on the fixing piece in a sliding manner in the first direction and is used for pushing and supporting the first connecting seat, and the second drive module is provided with a fixing piece arranged on the base and a pushing and supporting mechanism which can be arranged on the fixing piece in a sliding manner in the second direction and is used for pushing and supporting the second connecting seat.

7. The jig of claim 6, wherein: each pushing and abutting mechanism is provided with a pushing and abutting block, a pushing and abutting column and a supporting spring, wherein the pushing and abutting column is arranged on the pushing and abutting block and used for pushing and abutting the sliding mechanism so that the bearing module can slide, the supporting spring is sleeved on the pushing and abutting column and connected with the pushing and abutting block to abut against the sliding mechanism, and when the bearing module does not slide relative to the base, the supporting spring enables the workpiece and the first positioning part and the second positioning part to be separated by a certain distance.

8. The jig according to any one of claims 2 to 7, wherein: the jig further comprises a base and a first rotating mechanism, wherein the first rotating mechanism is connected between the base and the base, so that the base can rotate around a first rotating shaft perpendicular to the first direction and the second direction relative to the base.

9. The jig of claim 8, wherein: the jig further comprises a second rotating mechanism, and the base is arranged on the second rotating mechanism so that the base can rotate around a second rotating shaft perpendicular to the first rotating shaft.

10. A jig is suitable for being arranged on a workpiece to carry out laser engraving on the workpiece through a laser engraving device, wherein the workpiece is provided with a part to be engraved; it is characterized in that the jig comprises:

a base;

the bearing module is slidably arranged on the base and can be used for fixing the workpiece;

a positioning unit having a positioning portion corresponding to a target position of the laser emitted from the laser engraving device; and

and the driving unit is used for driving the bearing module to slide towards the positioning part of the positioning unit, so that the part to be engraved of the workpiece is abutted against the positioning part of the positioning unit and is engraved by the laser emitted by the laser engraving device.