CN111975678A - Positioning jig for manufacturing 5G communication module and using method thereof - Google Patents
Positioning jig for manufacturing 5G communication module and using method thereof Download PDFInfo
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- CN111975678A CN111975678A CN202010847020.8A CN202010847020A CN111975678A CN 111975678 A CN111975678 A CN 111975678A CN 202010847020 A CN202010847020 A CN 202010847020A CN 111975678 A CN111975678 A CN 111975678A
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- communication module
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
- B25H1/10—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby with provision for adjusting holders for tool or work
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Manufacture Of Motors, Generators (AREA)
- Testing Of Individual Semiconductor Devices (AREA)
Abstract
The invention discloses a positioning jig for manufacturing a 5G communication module and a using method thereof. The invention has reasonable structural design, is provided with a positioning mechanism, can fix and limit a plurality of 5G communication modules, can rotatably adjust the processing parts of the 5G communication modules, improves the processing efficiency, has a lifting function, and is convenient for the communication modules to be fixedly placed and to move downwards for detection and to be lifted and taken out after being processed.
Description
Technical Field
The invention relates to a jig structure, in particular to a positioning jig for manufacturing a 5G communication module and a using method thereof, and belongs to the technical field of jig device application.
Background
The jig is a tool for carpenters, ironmen, pincers, machines, electrical controls and other handicrafts, and is mainly used as a tool for assisting in controlling position or action (or both). The jig can be divided into a process assembly type jig, a project test type jig and a circuit board test type jig.
General tool can only fix, spacing to the module in 5G communication module's processing, and the processing position of module is adjusted inconveniently, and machining efficiency is slower, does not possess the raising and lowering functions, is unfavorable for the removal of module and gets and put, and tool detection function is perfect inadequately, can not reflect directly perceivedly that there are circuit fault scheduling problem after the module processing, and the functionality is not enough. Therefore, a positioning fixture for manufacturing a 5G communication module and a method for using the same are provided.
Disclosure of Invention
The present invention is directed to a positioning fixture for manufacturing a 5G communication module and a method for using the same.
The invention realizes the purpose through the following technical scheme, which comprises a limiting plate, side plates and a base, wherein the base is fixedly connected with the two side plates, one side of each side plate is clamped with a testing plate, the top of each testing plate is provided with a fixing plate, the two sides of each fixing plate are provided with lead screws, the tops of the lead screws are provided with the insides of the limiting plates, the limiting plates are positioned above transverse plates, and the transverse plates are fixedly connected to the tops of the side plates;
the top plate is installed to limiting plate one side, the block has changeed the board on the top plate, the standing groove has been seted up on changeing the board, spacing is installed to the standing groove top, the second motor is installed to spacing bottom.
Preferably, the limiting plate totally is two, two the equal rigid coupling of limiting plate is at the diaphragm top, two the rigid coupling has the roof between the limiting plate, the roof runs through the diaphragm, just roof both ends rigid coupling has the connecting strip, the connecting strip cup joints on the lead screw, sliding connection between roof and the curb plate.
Preferably, the bottom of the rotating plate is fixedly connected with a bottom plate, the bottom end of the bottom plate is fixedly connected with a second motor, an output shaft of the second motor is sleeved inside a sleeve shaft, the sleeve shaft is embedded on the bottom plate, and the rotating plate is rotatably connected with the top plate.
Preferably, the equal gomphosis in curb plate inner wall both sides has the lead screw, the cover block has been cup jointed on the lead screw top, the cover block gomphosis is inside the limiting plate, lead screw bottom rigid coupling has first motor, first motor gomphosis is inside the base, rotate between lead screw and the base and be connected.
Preferably, a first through hole is formed in one side of the side plate, a test plate is clamped at the bottom of the first through hole, one end of the test plate penetrates through the side plate and is fixedly connected with a light emitting diode, a plurality of test strips are fixedly connected to the other end of the test plate, and the test strips are located below the fixing plate.
Preferably, the base is provided with a clamping groove, the bases on two sides of the clamping groove are penetrated through by the bottom end of the L-shaped rod, the top of the L-shaped rod is fixedly connected to the detection plate, the top of the detection plate is fixedly connected with the LED lamp, the guide rod is clamped on one side of the detection plate, and the guide rod is fixedly connected to the inner side of the side plate.
Preferably, a square through hole is formed in the middle of the fixing plate, a light shielding plate is clamped at the top of the square through hole, the light shielding plate is clamped in the second through hole and is in sliding connection with the second through hole, and the second through hole is formed in one side of the side plate, which is far away from the test plate.
Preferably, the number of the placing grooves is four, the bottom of the placing groove is provided with a light transmission hole, two sides of the placing groove are fixedly connected with clamping blocks, two ends of a limiting strip are clamped between the clamping blocks, the middle of the limiting strip is inserted into the top of the rotating plate, and the length of the limiting strip is smaller than the diameter of the rotating plate.
Preferably, the inboard rigid coupling of curb plate has the riser, the riser is located between square through hole and the curb plate, riser top and bottom are provided with second motor and draw-in groove respectively, the block is connected between second motor and the draw-in groove.
Preferably, the using method comprises the following steps:
(1) the 5G communication module is placed in the placing groove on the rotating plate, the limiting strips are clamped on two sides of the placing groove, the 5G communication module is limited and fixed, the limiting strips are narrow, the influence on the 5G communication module in processing is small, and the fixed processing of a plurality of 5G communication modules can be realized;
(2) the 5G communication module and the rotating plate are rotated on the top plate by using the second motor, the second motor is a servo motor, the rotating angle can be adjusted, different positions of the 5G communication module can be conveniently machined, and the machining efficiency is improved;
(3) after the 5G communication module is processed, the first motor drives the screw rod to rotate, the 5G communication module and the top plate are gradually moved downwards in the inner cavity of the side plate, the 5G communication module is contacted with the test strip at the top of the test plate, the first motor stops rotating, the light screen in the second through hole is moved, and the light screen covers the top of the top plate;
(4) the two detection plates are clamped by the L-shaped rod and are electrically connected, the light emitting diodes on the detection plates are lightened to illuminate the 5G communication module on the counter plate through the square through holes, no light spots exist on the light shading plate, and the welding spots of the 5G communication module are in failure if the light spots exist;
(5) when the 5G communication module breaks down, the light screen and the detection plate are removed, the top plate and the rotating plate are moved upwards, the transverse plate is moved out, the welding point of the 5G communication module is overhauled, after the overhauling is finished, the top plate is moved downwards, the second motor is clamped at the top of the clamping groove, one side of the 5G communication module is clamped with the test strip at the top of the test plate, the condition of the light emitting diode outside the test plate is observed, and the light emitting diode is lightened to indicate that the internal circuit of the 5G communication module is abnormal.
(6) The top plate moves upwards, the limiting strip is taken down, and the processed and detected 5G communication module can be taken out.
The invention has the beneficial effects that:
the invention has reasonable structural design, is provided with a positioning mechanism, can fix and limit a plurality of 5G communication modules, can rotatably adjust the processing parts of the 5G communication modules, improves the processing efficiency, has a lifting function, and is convenient for the communication modules to be fixedly placed and to move downwards for detection and to be lifted and taken out after being processed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic view of the overall structure of the present invention;
FIG. 3 is a schematic view of a rotating plate according to the present invention;
FIG. 4 is a schematic view of the installation of the light shielding plate structure of the present invention.
In the figure: 1. limiting plate, 2, nest block, 3, diaphragm, 4, curb plate, 401, first through-hole, 402, second through-hole, 5, lead screw, 6, base, 7, survey test panel, 8, draw-in groove, 9, test strip, 10, first motor, 11, fixed plate, 1101, square through-hole, 12, montant, 13, standing groove, 14, connecting strip, 15, bottom plate, 16, spacing strip, 17, sleeve axle, 18, second motor, 19, commentaries on classics board, 20, roof, 21, light screen, 22, guide bar, 23, L type pole, 24, pick-up plate.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Referring to fig. 1-4, a positioning jig for manufacturing a 5G communication module and a using method thereof include a limiting plate 1, side plates 4 and a base 6, wherein the base 6 is fixedly connected with the two side plates 4, a testing plate 7 is clamped on one side of each side plate 4, a fixing plate 11 is mounted at the top of each testing plate 7, lead screws 5 are mounted on two sides of each fixing plate 11, the tops of the lead screws 5 are mounted inside the limiting plates 1, the limiting plates 1 are located above transverse plates 3, and the transverse plates 3 are fixedly connected to the tops of the side plates 4;
a top plate 20 is installed on one side of the limiting plate 1, a rotating plate 19 is clamped on the top plate 20, a placing groove 13 is formed in the rotating plate 19, a limiting strip 16 is installed above the placing groove 13, and a second motor 18 is installed at the bottom of the limiting strip 16.
Limiting plate 1 totally two, two the equal rigid coupling of limiting plate 1 is at diaphragm 3 top, two the rigid coupling has roof 20 between the limiting plate 1, roof 20 runs through diaphragm 3, just roof 20 both ends rigid coupling has connecting strip 14, connecting strip 14 cup joints on lead screw 5, sliding connection between roof 20 and the curb plate 4.
The bottom of the rotating plate 19 is fixedly connected with a bottom plate 15, the bottom end of the bottom plate 15 is fixedly connected with a second motor 18, an output shaft of the second motor 18 is sleeved inside a sleeve shaft 17, the sleeve shaft 17 is embedded on the bottom plate 15, and the rotating plate 19 is rotatably connected with a top plate 20.
The equal gomphosis in 4 inner wall both sides of curb plate has lead screw 5, the cover block 2 has been cup jointed on 5 tops of lead screw, the 2 gomphosis of cover block is inside limiting plate 1, 5 bottom rigid couplings of lead screw have first motor 10, the 10 gomphosis of first motor is inside 6 bases, rotate between lead screw 5 and the base 6 and be connected.
A first through hole 401 is formed in one side of the side plate 4, a test plate 7 is clamped at the bottom of the first through hole 401, one end of the test plate 7 penetrates through the side plate 4 and then is fixedly connected with a light emitting diode, the other end of the test plate 7 is fixedly connected with a plurality of test strips 9, and the test strips 9 are located below the fixing plate 11.
The base 6 is provided with a clamping groove 8, the bases 6 on two sides of the clamping groove 8 are all penetrated through by the bottom end of an L-shaped rod 23, the top of the L-shaped rod 23 is fixedly connected onto a detection plate 24, the top of the detection plate 24 is fixedly connected with an LED lamp, a guide rod 22 is clamped on one side of the detection plate 24, and the guide rod 22 is fixedly connected to the inner side of a side plate 4.
The middle of the fixing plate 11 is provided with a square through hole 1101, the top of the square through hole 1101 is clamped with a light shielding plate 21, the light shielding plate 21 is clamped in the second through hole 402 and is in sliding connection with the second through hole 402, and the second through hole 402 is arranged on one side of the side plate 4 away from the test plate 7.
The number of the placing grooves 13 is four, the bottom of the placing groove 13 is provided with a light transmission hole, two sides of the placing groove 13 are fixedly connected with clamping blocks, two ends of a limiting strip 16 are clamped between the clamping blocks, the middle of the limiting strip 16 is inserted into the top of the rotating plate 19, and the length of the limiting strip 16 is smaller than the diameter of the rotating plate 19.
The inboard rigid coupling of curb plate 4 has riser 12, riser 12 is located between square through hole 1101 and curb plate 4, riser 12 top and bottom are provided with second motor 18 and draw-in groove 8 respectively, the block is connected between second motor 18 and the draw-in groove 8.
The using method comprises the following steps:
(1) the 5G communication module is placed in the placing groove 13 on the rotating plate 19, the limiting strips 16 are clamped on two sides of the placing groove 13, the 5G communication module is limited and fixed, the limiting strips 16 are narrow, the influence on the 5G communication module in processing is small, and the fixed processing of a plurality of 5G communication modules can be realized;
(2) the 5G communication module and the rotating plate 19 are rotated on the top plate 20 by using the second motor 18, the second motor 18 is a servo motor, the rotating angle can be adjusted, different positions of the 5G communication module can be conveniently machined, and the machining efficiency is improved;
(3) after the 5G communication module is processed, the first motor 10 drives the screw 5 to rotate, the 5G communication module and the top plate 20 gradually move downwards in the inner cavity of the side plate 4, the 5G communication module is in contact with the test strip 11 at the top of the test plate 7, the first motor 10 stops rotating, the light shielding plate 21 in the second through hole 402 is moved, and the light shielding plate 21 covers the top of the top plate 20;
(4) the two detection plates 24 are clamped by the L-shaped rod 23, the detection plates 24 are electrically connected, the light emitting diodes on the detection plates 24 are lightened to illuminate the 5G communication module on the rotating plate 19 through the square through holes 1101, no light spot is observed on the light shading plate 21, and if the light spot exists, the welding spot of the 5G communication module fails;
(5) when 5G communication module broke down, remove light screen 21 and pick-up plate 24, roof 20 and commentaries on classics board 19 move up, move out diaphragm 3, overhaul 5G communication module's welding point, after the maintenance, roof 20 moved down, second motor 18 block is at draw-in groove 8 top, 5G communication module one side and the test strip 9 block at test panel 7 top, observe the condition of the outside emitting diode of test panel 7, emitting diode lights up then to explain that 5G communication module internal circuit has not unusually.
(6) The top plate 20 moves upwards, the limiting strip 16 is taken down, and the processed and detected 5G communication module can be taken out.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a positioning jig of 5G communication module preparation usefulness which characterized in that: the device comprises a limiting plate (1), side plates (4) and a base (6), wherein the base (6) is fixedly connected with the two side plates (4), one side of each side plate (4) is clamped with a testing plate (7), a fixing plate (11) is installed at the top of each testing plate (7), lead screws (5) are installed on two sides of each fixing plate (11), the tops of the lead screws (5) are installed inside the limiting plates (1), the limiting plates (1) are located above transverse plates (3), and the transverse plates (3) are fixedly connected to the tops of the side plates (4);
roof (20) are installed to limiting plate (1) one side, the block has changeed board (19) on roof (20), change and seted up standing groove (13) on board (19), spacing (16) are installed to standing groove (13) top, second motor (18) are installed to spacing (16) bottom.
2. The positioning fixture for manufacturing 5G communication modules according to claim 1, wherein: limiting plate (1) totally two, two the equal rigid coupling of limiting plate (1) is at diaphragm (3) top, two the rigid coupling has roof (20) between limiting plate (1), roof (20) run through diaphragm (3), just roof (20) both ends rigid coupling has connecting strip (14), connecting strip (14) cup joint on lead screw (5), sliding connection between roof (20) and curb plate (4).
3. The positioning fixture for manufacturing 5G communication modules according to claim 1, wherein: the bottom of the rotating plate (19) is fixedly connected with a bottom plate (15), the bottom end of the bottom plate (15) is fixedly connected with a second motor (18), an output shaft of the second motor (18) is sleeved inside a sleeve shaft (17), the sleeve shaft (17) is embedded on the bottom plate (15), and the rotating plate (19) is rotatably connected with a top plate (20).
4. The positioning fixture for manufacturing 5G communication modules according to claim 1, wherein: curb plate (4) inner wall both sides all gomphosis have lead screw (5), cover block (2) have been cup jointed on lead screw (5) top, cover block (2) gomphosis is inside limiting plate (1), lead screw (5) bottom rigid coupling has first motor (10), first motor (10) gomphosis is inside base (6), rotate between lead screw (5) and base (6) and be connected.
5. The positioning fixture for manufacturing 5G communication modules according to claim 1, wherein: first through-hole (401) have been seted up to curb plate (4) one side, first through-hole (401) bottom block has survey test panel (7), it has light emitting diode to survey test panel (7) one end to run through curb plate (4) back rigid coupling, it has a plurality of test strips (9) to survey test panel (7) other end rigid coupling, test strip (9) are located fixed plate (11) below.
6. The positioning fixture for manufacturing 5G communication modules according to claim 1, wherein: the utility model discloses a lamp inspection device, including base (6), draw-in groove (8) have been seted up on base (6), base (6) of draw-in groove (8) both sides are all run through by L type pole (23) bottom, L type pole (23) top rigid coupling is on pick-up plate (24), pick-up plate (24) top rigid coupling has the LED lamp, just pick-up plate (24) one side block has guide bar (22), guide bar (22) rigid coupling is inboard in curb plate (4).
7. The positioning fixture for manufacturing 5G communication modules according to claim 1, wherein: the middle of the fixing plate (11) is provided with a square through hole (1101), the top of the square through hole (1101) is clamped with a light shielding plate (21), the light shielding plate (21) is clamped in the second through hole (402) and is in sliding connection with the second through hole (402), and the second through hole (402) is arranged on one side, away from the test plate (7), of the side plate (4).
8. The positioning fixture for manufacturing 5G communication modules according to claim 1, wherein: the novel rotary table is characterized in that the number of the placing grooves (13) is four, the bottom of each placing groove (13) is provided with a light transmission hole, two sides of each placing groove (13) are fixedly connected with clamping blocks, two ends of a limiting strip (16) are clamped between the clamping blocks, the middle of each limiting strip (16) is inserted into the top of the rotary plate (19), and the length of each limiting strip (16) is smaller than the diameter of the rotary plate (19).
9. The positioning fixture for manufacturing 5G communication modules according to claim 1, wherein: curb plate (4) inboard rigid coupling has riser (12), riser (12) are located between square through hole (1101) and curb plate (4), riser (12) top and bottom are provided with second motor (18) and draw-in groove (8) respectively, the block is connected between second motor (18) and draw-in groove (8).
10. The use method of the positioning jig for 5G communication module manufacture according to any one of claims 1 to 9, wherein the method comprises the following steps: the using method comprises the following steps:
(1) the 5G communication module is placed in a placing groove (13) on a rotating plate (19), a limiting strip (16) is clamped at two sides of the placing groove (13), the 5G communication module is limited and fixed, the limiting strip (16) is narrow, the influence on the 5G communication module in processing is small, and the fixed processing of a plurality of 5G communication modules can be realized;
(2) the 5G communication module and the rotating plate (19) are rotated on the top plate (20) by utilizing the second motor (18), the second motor (18) is a servo motor, the rotating angle can be adjusted, different positions of the 5G communication module can be conveniently processed, and the processing efficiency is improved;
(3) after the 5G communication module is processed, the first motor (10) drives the screw rod (5) to rotate, the 5G communication module and the top plate (20) are gradually moved downwards in the inner cavity of the side plate (4), the 5G communication module is in contact with the test strip (11) at the top of the test plate (7), the first motor (10) stops rotating, the light shielding plate (21) inside the second through hole (402) is moved, and the light shielding plate (21) covers the top of the top plate (20);
(4) the two detection plates (24) are clamped by utilizing the L-shaped rod (23), the detection plates (24) are electrically connected, the light emitting diodes on the detection plates (24) are lightened to illuminate the 5G communication module on the rotating plate (19) through the square through holes (1101), whether light spots exist on the light shading plate (21) or not is observed, and if the light spots exist, welding spots of the 5G communication module break down;
(5) when the 5G communication module breaks down, the light screen (21) and the detection plate (24) are removed, the top plate (20) and the rotating plate (19) move upwards, the transverse plate (3) is moved out, the welding point of the 5G communication module is overhauled, after the overhauling is finished, the second motor (18) is clamped at the top of the clamping groove (8), the top plate (20) moves downwards, one side of the 5G communication module is clamped with the test strip (9) at the top of the test plate (7), the condition of the light emitting diode outside the test plate (7) is observed, and if the light emitting diode is lightened, the situation that a circuit inside the 5G communication module is abnormal is avoided;
(6) the top plate (20) moves upwards, the limiting strip (16) is taken down, and the processed and detected 5G communication module can be taken out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010847020.8A CN111975678B (en) | 2020-08-21 | 2020-08-21 | Positioning jig for manufacturing 5G communication module and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010847020.8A CN111975678B (en) | 2020-08-21 | 2020-08-21 | Positioning jig for manufacturing 5G communication module and using method thereof |
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| CN111975678A true CN111975678A (en) | 2020-11-24 |
| CN111975678B CN111975678B (en) | 2022-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114083313A (en) * | 2021-11-29 | 2022-02-25 | 广州德玉福珠宝有限公司 | Precious metal ornament processing and positioning mechanism and use method thereof |
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| CN209264768U (en) * | 2018-10-12 | 2019-08-16 | 义乌嘉彩数码科技有限公司 | A kind of testing jig for circuit board testing tooling |
| CN209491736U (en) * | 2019-01-17 | 2019-10-15 | 合肥市航嘉电子技术有限公司 | Circuit board positioned-lifting rotating device |
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| JP5118781B1 (en) * | 2012-09-05 | 2013-01-16 | 株式会社春近精密 | Work transfer device with pallet fixing mechanism |
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| CN209264768U (en) * | 2018-10-12 | 2019-08-16 | 义乌嘉彩数码科技有限公司 | A kind of testing jig for circuit board testing tooling |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114083313A (en) * | 2021-11-29 | 2022-02-25 | 广州德玉福珠宝有限公司 | Precious metal ornament processing and positioning mechanism and use method thereof |
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| Publication number | Publication date |
|---|---|
| CN111975678B (en) | 2022-04-01 |
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