CN112872543A - Intelligent-manufactured mobile phone communication antenna welding self-positioning device - Google Patents
Intelligent-manufactured mobile phone communication antenna welding self-positioning device Download PDFInfo
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- CN112872543A CN112872543A CN202110044531.0A CN202110044531A CN112872543A CN 112872543 A CN112872543 A CN 112872543A CN 202110044531 A CN202110044531 A CN 202110044531A CN 112872543 A CN112872543 A CN 112872543A
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- Prior art keywords
- rod
- communication antenna
- sides
- soldering tin
- phone communication
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/08—Auxiliary devices therefor
- B23K3/087—Soldering or brazing jigs, fixtures or clamping means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/08—Auxiliary devices therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
- B23K2101/42—Printed circuits
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Telephone Set Structure (AREA)
Abstract
The invention relates to the technical field of communication antenna welding, and discloses an intelligently manufactured mobile phone communication antenna welding self-positioning device which comprises a machine body, wherein conveyor belts are movably arranged on two sides of a sucker, a rotating shaft is rotatably arranged on the inner side of each conveyor belt, a first telescopic rod is fixedly arranged below the sucker, a photoresistor is fixedly arranged at the upper end of a moving rod, a driven rod is rotatably connected to the upper left end of the driving rod, and second telescopic rods are fixedly arranged at two ends of the moving rod. This self-align device of cell-phone communication antenna welding that intelligence was made, when contacting through PCB board and magnetic pole, the photo resistance on right side is by the shading, thereby the second telescopic link circular telegram, then drive the movable rod and remove to both sides, make the sucking disc adsorb the PCB board, the movable rod downstream drives the driven lever rotation on the actuating lever simultaneously, and drive the rotation axis and remove to both sides, the conveyer belt that utilizes sucking disc and both sides is fixed with the PCB board, the automatic fixed effect with PCB board automatic positioning has been realized.
Description
Technical Field
The invention relates to the technical field of communication antenna welding, in particular to an intelligent manufactured mobile phone communication antenna welding self-positioning device.
Background
Current cell-phone is for having realized the communication function, can utilize the solder paste with communication antenna welding on inside PCB board, thereby guarantee that communication antenna can normal operating, current welding set is when welding antenna, need the manual work with PCB board location and install on weldment work platform, the welding efficiency that leads to communication antenna is lower, the inside solder paste of welding equipment that has now simultaneously can be similar to the liquid state after melting, the solder paste can't be retrieved after the welding is accomplished, lead to dripping easily on the workstation, cause the trouble and the extravagant wasting of resources of later stage clearance, thereby the mobile phone
Therefore, those skilled in the art have provided a welding self-positioning device for a mobile phone communication antenna manufactured intelligently to solve the above problems in the background art.
Disclosure of the invention technical problem (1)
Aiming at the defects of the prior art, the invention provides the intelligent-manufactured mobile phone communication antenna welding self-positioning device which has the advantages that the PCB with the communication antenna can be automatically positioned and fixed, the molten soldering tin can be automatically recycled after the soldering tin is finished, and the like, and the problems that the PCB with the communication antenna can not be automatically positioned and fixed, the molten soldering tin can not be recycled after the soldering tin is finished, and the like in the conventional equipment are solved.
(II) technical scheme
In order to realize the purpose of automatically positioning and fixing the PCB board containing the communication antenna and automatically recycling the melted soldering tin after the soldering tin is finished, the invention provides the following technical scheme:
a welding self-positioning device for a mobile phone communication antenna manufactured intelligently comprises a machine body, an electric slide rail is fixedly arranged inside the upper portion of the machine body, a soldering tin box is slidably arranged on the outer side of the electric slide rail, auxiliary rods are rotatably arranged on two sides of the soldering tin box, a stabilizer bar is fixedly arranged on the upper portion inside the soldering tin box and fixedly connected with the machine body, a piston chamber is fixedly arranged below the stabilizer bar, filter screens are fixedly arranged on two sides above the piston chamber, a first rotating rod is rotatably arranged above the filter screens, the upper end of the first rotating rod is rotatably connected with the stabilizer bar, control valves are rotatably connected with two ends of the first rotating rod, a soldering tin pipe is fixedly arranged on the inner side of each control valve, a sucker is movably arranged below the soldering tin pipe, conveyor belts are movably arranged on two sides of the sucker, a rotating shaft is rotatably arranged on the inner side of each conveyor belt, a magnetic rod, the below fixed mounting of sucking disc has first telescopic link, the both sides of first telescopic link are rotated and are installed the second bull stick, the both ends movable mounting of second bull stick has the carriage release lever, the upper end fixed mounting of carriage release lever has photo resistance, photo resistance's below movable mounting has the connecting rod, the right-hand member of connecting rod and the upper end fixed connection of first telescopic link, the left end of connecting rod and the outside fixed connection of carriage release lever, the lower extreme of carriage release lever rotates and is connected with the actuating lever, the upper left end of actuating lever rotates and is connected with the driven lever, the upper end and the axis of rotation swing joint of driven lever, the below fixed mounting of first telescopic link has the air chamber, the inside movable mounting of air chamber has the movable rod, the both ends fixed mounting of movable rod has the second telescopic link, movable rod and second telescopic link fixed connection, the below of second telescopic link rotates and installs the control lever.
Preferably, the piston room passes through filter screen and soldering tin pipe intercommunication, when the soldering tin box resets, makes the stabilizer bar with the space grow of piston room for the air refluence in the soldering tin pipe, thereby inhales the soldering tin with soldering tin pipe terminal surface and gets back to inside, and the filter screen has avoided the solder paste to enter into in the piston room.
Preferably, the lower end of the movable rod is provided with an inclined plane, and the inclined angle of the inclined plane is the same as that of the upper inclined plane at the two ends of the movable rod.
Preferably, the photoresistors are symmetrically distributed by taking the central line of the sucker as the central line, the photoresistors on the left side are electrically connected with the electromagnet, and the photoresistors on the right side are electrically connected with the second telescopic rod.
Preferably, the upper end and the lower end of the control rod are fixedly provided with supporting springs, and the supporting springs can ensure that the movable rod cannot interfere when passing through the control rod.
Preferably, control switch and electronic slide rail electric connection when the control lever rotates and contacts with control switch for electronic slide rail starts to drive the inside solder tube of soldering tin box and carries out the soldering tin operation.
(III) advantageous effects
Compared with the prior art, the invention provides an intelligent manufactured mobile phone communication antenna welding self-positioning device, which has the following beneficial effects:
1. the mobile phone communication antenna welding self-positioning device intelligently manufactured reduces the resistance value inside the photosensitive resistor when the PCB moves to the upper part of the photosensitive resistor on the left side, the current inside the electromagnet on the right side is increased and generates the same magnetism as the opposite surface of the magnetic rod, thereby pushing the magnetic rod to move, when the PCB moves to be in contact with the magnetic rod, the photosensitive resistor on the right side is shaded to reduce the resistance value inside, thereby electrifying the second telescopic rod and driving the movable rod to move towards two sides, thereby sucking the outside air into the air chamber through the sucker and leading the sucker to adsorb the PCB, meanwhile, when the movable rod moves, the movable rod above the movable rod loses the supporting force, leading the movable rod to move downwards and driving the driving rod to rotate, leading the driven rod to rotate and driving the rotating shaft to move towards two sides, fixing the PCB by utilizing the sucker and the conveyor belts on two sides, realizing the effect of automatically positioning and fixing the PCB with the communication antenna, the production efficiency is improved.
2. The mobile phone communication antenna welding self-positioning device intelligently manufactured can drive the control rod to rotate when moving through the movable rod, so that the control rod is attached to the control switch through the inner side supporting spring, the electric slide rail is electrified to drive the soldering tin tube inside the soldering tin box to perform soldering tin, the soldering tin box is reset after the soldering tin is finished, the stabilizer bar inside the piston chamber moves from top to bottom, the gas inside the soldering tin tube is sucked into the piston chamber through the filter screen, the melted soldering tin paste at the lower end of the soldering tin tube is subjected to the external gas driving force, the melted soldering tin paste enters the inner side of the soldering tin tube, the filter screen is utilized to block the soldering tin paste from entering the piston chamber, the first rotating rods at two sides of the stabilizer bar are reset simultaneously, the control valve is closed, the flowing out of the soldering tin paste above the soldering tin tube is avoided, the effect of automatically recycling the inside of the soldering tin, avoiding the waste of resources caused by the dropping of the soldering paste on the workbench.
Drawings
FIG. 1 is a schematic view of the interior of the structure of the present invention;
FIG. 2 is a schematic view of the internal connection of the soldering tin case structure according to the present invention;
FIG. 3 is a schematic view of the interior of the lower half of the structure of the present invention;
FIG. 4 is an enlarged view of the structure shown in FIG. 3 at A according to the present invention;
FIG. 5 is an enlarged view of the structure shown at B in FIG. 3 according to the present invention;
FIG. 6 is an enlarged view of the structure shown at C in FIG. 3 according to the present invention.
In the figure: 1. a body; 2. an electric slide rail; 3. a soldering tin box; 4. an auxiliary lever; 5. a stabilizer bar; 6. a piston chamber; 7. filtering with a screen; 8. a first rotating lever; 9. a control valve; 10. soldering a tin tube; 11. a suction cup; 12. a conveyor belt; 13. a rotating shaft; 14. a magnetic rod; 15. an electromagnet; 16. a first telescopic rod; 17. a second rotating rod; 18. a travel bar; 19. a photoresistor; 20. a connecting rod; 21. a drive rod; 22. a driven lever; 23. an air chamber; 24. a movable rod; 25. a second telescopic rod; 26. a control lever; 27. and controlling the switch.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments 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.
Referring to fig. 1-6, an intelligently manufactured mobile phone communication antenna welding self-positioning device comprises a machine body 1, an electric slide rail 2 is fixedly installed inside the upper portion of the machine body 1, a soldering tin box 3 is slidably installed outside the electric slide rail 2, auxiliary rods 4 are rotatably installed on two sides of the soldering tin box 3, a stabilizer bar 5 is fixedly installed on the upper portion inside the soldering tin box 3, the stabilizer bar 5 is fixedly connected with the machine body 1, a piston chamber 6 is fixedly installed below the stabilizer bar 5, the piston chamber 6 is communicated with a soldering tin tube 10 through a filter screen 7, when the soldering tin box 3 is reset, the stabilizer bar 5 enlarges the space of the piston chamber 6 to enable air in the soldering tin tube 10 to flow backwards, so that soldering tin on the end face of the soldering tin tube 10 is sucked back to the inside, the filter screen prevents soldering tin paste from entering the piston chamber 6, the filter screens 7 are fixedly installed on two sides above the piston chamber 6, a first rotating rod, the upper end of first bull stick 8 rotates with stabilizer bar 5 to be connected, the both ends of first bull stick 8 are rotated and are connected with control valve 9, the inboard fixed mounting of control valve 9 has soldering tin pipe 10, the below movable mounting of soldering tin pipe 10 has sucking disc 11, the both sides movable mounting of sucking disc 11 has conveyer belt 12, the inboard rotation of conveyer belt 12 installs axis of rotation 13, the top of right side conveyer belt 12 is rotated and is installed magnetic pole 14, the inboard fixed mounting in top of magnetic pole 14 has electro-magnet 15, the below fixed mounting of sucking disc 11 has first telescopic link 16, the both sides of first telescopic link 16 are rotated and are installed second bull stick 17, the both ends movable mounting of second bull stick 17 has carriage release lever 18, the lower extreme of carriage release lever 18 is provided with the inclined plane, and the same with the top inclined plane inclination at 24 both ends of.
The upper end of the moving rod 18 is fixedly provided with a photoresistor 19, the photoresistor 19 is symmetrically distributed by taking the central line of the sucker 11 as the central line, the photoresistor 19 on the left side is electrically connected with the electromagnet 15, the photoresistor 19 on the right side is electrically connected with the second telescopic rod 25, a connecting rod 20 is movably arranged below the photoresistor 19, the right end of the connecting rod 20 is fixedly connected with the upper end of the first telescopic rod 16, the left end of the connecting rod 20 is fixedly connected with the outer side of the moving rod 18, the lower end of the moving rod 18 is rotatably connected with a driving rod 21, the left upper end of the driving rod 21 is rotatably connected with a driven rod 22, the upper end of the driven rod 22 is movably connected with the rotating shaft 13, the lower end of the first telescopic rod 16 is fixedly provided with an air chamber 23, a movable rod 24 is movably arranged inside the air chamber, the below of second telescopic link 25 is rotated and is installed control lever 26, the upper and lower both ends fixed mounting of control lever 26 has supporting spring, supporting spring can guarantee that movable rod 24 can not appear interfering when passing through control lever 26, the inboard fixed mounting of control lever 26 has control switch 27, control switch 27 and electric slide rail 2 electric connection, when control lever 26 rotates and contacts with control switch 27, make electric slide rail 2 start to drive the inside solder tube 10 of soldering tin box 3 and carry out the soldering tin operation.
The working principle is as follows: when the PCB moves to the right side of the left photosensitive resistor 19, the resistance value inside the photosensitive resistor 19 is reduced, the current inside the electromagnet 15 on the right side is increased and generates the same magnetism as the opposite surface of the magnetic rod 14, thereby pushing the magnetic rod 14 to move, when the PCB moves to the right side of the machine body 1 and contacts with the magnetic rod 14, the photosensitive resistor 19 on the right side is shaded to reduce the resistance value inside, thereby electrifying the second telescopic rod 25, then driving the movable rod 24 to move towards two sides, thereby sucking the outside air into the air chamber 23 through the sucker 11, making the sucker 11 adsorb the PCB, and simultaneously when the movable rod 24 moves, the movable rod 18 above the sucker loses the supporting force, so that the movable rod 18 moves downwards under the action of the second rotary rod 17, and driving the driving rod 21 to rotate, the driven rod 22 rotates and drives the rotating shaft 13 to move towards two sides, and meanwhile, when the moving rod 18 moves downwards, the connecting rod 20 drives the first telescopic rod 16 to move downwards, and the PCB is fixed by the aid of the suckers 11 and the conveyor belts 12 on two sides, so that the PCB containing the communication antenna is automatically positioned and fixed, and production efficiency is improved.
Meanwhile, the movable rod 24 drives the control rod 26 to rotate when moving, so that the control rod 26 is attached to the control switch 27 through the inner side supporting spring, the electric slide rail 2 is electrified to drive the soldering tin tube 10 inside the soldering tin box 3 to perform soldering, after the soldering is completed, the soldering tin box 3 is reset at the moment, so that the stabilizing rod 5 inside the piston chamber 6 moves from top to bottom, the air inside the soldering tin tube 10 is sucked into the piston chamber 6 through the filter screen 7, the melted soldering paste at the lower end of the soldering tin tube 10 is subjected to the external air driving force and enters the inner side of the soldering tin tube 10, the filter screen 7 is used for preventing the soldering paste from entering the piston chamber 6, meanwhile, the first rotating rods 8 at two sides of the stabilizing rod 5 are reset, the control valve 9 is closed, the flowing out of the soldering paste above the soldering tin tube 10 is avoided, and the automatic recycling of the inside of the soldering tin tube 10 after the soldering is completed is, avoiding the waste of resources caused by the dropping of the soldering paste on the workbench.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a cell-phone communication antenna welding of intelligent manufacturing is from positioner, includes organism (1), its characterized in that: the machine body is characterized in that an electric sliding rail (2) is fixedly mounted inside the upper portion of the machine body (1), a soldering tin box (3) is slidably mounted on the outer side of the electric sliding rail (2), auxiliary rods (4) are rotatably mounted on two sides of the soldering tin box (3), a stabilizing rod (5) is fixedly mounted on the upper portion inside the soldering tin box (3), the stabilizing rod (5) is fixedly connected with the machine body (1), a piston chamber (6) is fixedly mounted below the stabilizing rod (5), filter screens (7) are fixedly mounted on two sides above the piston chamber (6), a first rotating rod (8) is rotatably mounted above the filter screens (7), the upper end of the first rotating rod (8) is rotatably connected with the stabilizing rod (5), control valves (9) are rotatably connected to two ends of the first rotating rod (8), soldering tin tubes (10) are fixedly mounted on the inner sides of the control valves (9), and suckers (11) are movably, the automatic feeding device comprises a sucker (11), conveying belts (12) movably mounted on two sides of the sucker (11), a rotating shaft (13) rotatably mounted on the inner side of the conveying belts (12), a magnetic rod (14) rotatably mounted above the right conveying belt (12), an electromagnet (15) fixedly mounted on the inner side above the magnetic rod (14), a first telescopic rod (16) fixedly mounted below the sucker (11), second rotating rods (17) rotatably mounted on two sides of the first telescopic rod (16), moving rods (18) movably mounted at two ends of the second rotating rods (17), a photoresistor (19) fixedly mounted at the upper end of each moving rod (18), a connecting rod (20) movably mounted below the photoresistor (19), the right end of the connecting rod (20) is fixedly connected with the upper end of the first telescopic rod (16), the left end of the connecting rod (20) is fixedly connected with the outer side of each moving rod (18), and the lower end of each moving rod (18) is, the upper left end of actuating lever (21) rotates and is connected with driven lever (22), the upper end and axis of rotation (13) swing joint of driven lever (22), the below fixed mounting of first telescopic link (16) has air chamber (23), the inside movable mounting of air chamber (23) has movable rod (24), the both ends fixed mounting of movable rod (24) has second telescopic link (25), movable rod (24) and second telescopic link (25) fixed connection, the below of second telescopic link (25) is rotated and is installed control lever (26), the inboard fixed mounting of control lever (26) has control switch (27).
2. The welding self-positioning device for the intelligently manufactured mobile phone communication antenna according to claim 1, is characterized in that: the piston chamber (6) is communicated with the solder tube (10) through a filter screen (7).
3. The welding self-positioning device for the intelligently manufactured mobile phone communication antenna according to claim 1, is characterized in that: the lower end of the movable rod (18) is provided with an inclined plane, and the inclined angle of the inclined plane is the same as that of the upper inclined plane at the two ends of the movable rod (24).
4. The welding self-positioning device for the intelligently manufactured mobile phone communication antenna according to claim 1, is characterized in that: the photoresistors (19) are symmetrically distributed by taking the center line of the sucker (11) as the center line, the photoresistors (19) on the left side are electrically connected with the electromagnet (15), and the photoresistors (19) on the right side are electrically connected with the second telescopic rod (25).
5. The welding self-positioning device for the intelligently manufactured mobile phone communication antenna according to claim 1, is characterized in that: and supporting springs are fixedly arranged at the upper end and the lower end of the control rod (26).
6. The welding self-positioning device for the intelligently manufactured mobile phone communication antenna according to claim 1, is characterized in that: the control switch (27) is electrically connected with the electric slide rail (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110044531.0A CN112872543A (en) | 2021-01-13 | 2021-01-13 | Intelligent-manufactured mobile phone communication antenna welding self-positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110044531.0A CN112872543A (en) | 2021-01-13 | 2021-01-13 | Intelligent-manufactured mobile phone communication antenna welding self-positioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112872543A true CN112872543A (en) | 2021-06-01 |
Family
ID=76045703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110044531.0A Withdrawn CN112872543A (en) | 2021-01-13 | 2021-01-13 | Intelligent-manufactured mobile phone communication antenna welding self-positioning device |
Country Status (1)
| Country | Link |
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| CN (1) | CN112872543A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113524866A (en) * | 2021-06-03 | 2021-10-22 | 黄国胜 | Uninterrupted automatic bonding equipment for double-layer composite metal plate |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5377895A (en) * | 1994-03-08 | 1995-01-03 | Masreliez; C. Johan | Vacuum actuated solder sucker |
| CN103978279A (en) * | 2014-04-14 | 2014-08-13 | 兰兴欣 | Tin-dropping electric soldering iron |
| CN105945381A (en) * | 2016-05-11 | 2016-09-21 | 四川大学 | Novel electric soldering iron with tin output welding and suction recovery functions |
| KR20170023543A (en) * | 2015-08-24 | 2017-03-06 | 정승익 | Apparatus For Soldering Shaped Like A Syringe |
| CN208195872U (en) * | 2018-05-17 | 2018-12-07 | 湖州慧能机电科技有限公司 | A kind of tin remover of chip |
| CN211708320U (en) * | 2019-12-30 | 2020-10-20 | 深圳威凯恩电子科技有限公司 | Solder paste coating device for processing mobile phone charger |
-
2021
- 2021-01-13 CN CN202110044531.0A patent/CN112872543A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5377895A (en) * | 1994-03-08 | 1995-01-03 | Masreliez; C. Johan | Vacuum actuated solder sucker |
| CN103978279A (en) * | 2014-04-14 | 2014-08-13 | 兰兴欣 | Tin-dropping electric soldering iron |
| KR20170023543A (en) * | 2015-08-24 | 2017-03-06 | 정승익 | Apparatus For Soldering Shaped Like A Syringe |
| CN105945381A (en) * | 2016-05-11 | 2016-09-21 | 四川大学 | Novel electric soldering iron with tin output welding and suction recovery functions |
| CN208195872U (en) * | 2018-05-17 | 2018-12-07 | 湖州慧能机电科技有限公司 | A kind of tin remover of chip |
| CN211708320U (en) * | 2019-12-30 | 2020-10-20 | 深圳威凯恩电子科技有限公司 | Solder paste coating device for processing mobile phone charger |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113524866A (en) * | 2021-06-03 | 2021-10-22 | 黄国胜 | Uninterrupted automatic bonding equipment for double-layer composite metal plate |
| CN113524866B (en) * | 2021-06-03 | 2024-01-16 | 台州市联诚化工设备有限公司 | Uninterrupted automatic bonding equipment for double-layer composite metal plate |
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Application publication date: 20210601 |
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