A welding head and a conductive cloth welding machine comprising the same

Abstract

The utility model discloses a welding machine head and conductive cloth welding machine containing this machine head. The welding machine head includes Y axis moving device, Y axis installation backplate, welding machine head body, replaceable welding head and integrated setting heat insulation paper automatic conveying system, this conveying system is by left and right symmetry setting heat insulation paper feeding disc, paper feeding disc guide wheel, heat insulation paper tensioner and paper collecting device constitute, can make heat insulation paper keep the state of tensioned and close below the welding head, form effective heat protection barrier, replaceable welding head is connected through quick mounting and clamping structure, and it is convenient to maintain replacement, and the cable box is with the drag chain standard wiring, ensures the motion stability. The utility model discloses through the automatic conveying and heat protection mechanism of heat insulation paper, effectively solved the heat damage problem in the welding process, significantly improved the automation degree of conductive cloth welding, process safety and product quality consistency.

Description

Technical Field

[0001] This utility model belongs to the field of electronic component assembly technology, and specifically relates to an automated equipment for welding flexible electromagnetic shielding components such as conductive cloth. Specifically, it is a welding head that integrates an automatic feeding and tensioning system for heat insulation paper and a conductive cloth welding machine containing the welding head. Background Technology

[0002] In the field of precision electronics manufacturing, the welding process for flexible electromagnetic shielding components such as conductive cloth faces multiple stringent requirements: precise alignment of the welding position, accurate control of heat input to avoid damage to the substrate, and high consistency throughout the welding process. Traditional manual welding methods have a core contradiction—the pursuit of welding quality requires skilled technicians to operate with precision, but this leads to low production efficiency and difficulty in ensuring consistency; while the use of semi-automatic welding equipment can improve efficiency, it generally lacks an effective local heat protection mechanism, and the high-temperature welding head can easily cause thermal damage to nearby sensitive components.

[0003] Current mainstream technical solutions have significant limitations: while ordinary automated welding heads can achieve basic welding functions, they lack integrated heat insulation systems, requiring manual placement of heat insulation pads before welding, which severely restricts the automation cycle time; some equipment attempts to integrate simple heat insulation devices, but issues such as poor paper feeding, unstable tension leading to positioning deviations, and even welding quality problems caused by wrinkles in the heat insulation paper result in problems. In addition, existing welding heads mostly adopt a fixed welding head design, making replacement and maintenance inconvenient, and chaotic cable management affects motion accuracy.

[0004] Therefore, there is an urgent need to develop an integrated welding head that combines an efficient automatic feeding, tensioning and recycling system for thermal insulation paper, and has the ability to quickly change heads and manage cables in a standardized manner, so as to achieve high-quality, fully automated conductive cloth welding operations. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a welding head and a conductive cloth welding machine containing the aforementioned welding head. This welding head integrates an automatic feeding, tensioning, and recycling system for insulating paper, and employs a quick-change welding head and standardized cable management structure. This achieves efficient localized heat protection and convenient maintenance during the welding process, effectively solving the problem of workpiece damage caused by high temperatures, and significantly improving the automation level, process safety, and ease of operation of conductive cloth welding.

[0006] This utility model includes the following technical solutions: A welding head includes a Y-axis moving device, a Y-axis mounting back plate, a heat-insulating paper feeding tray, a paper feeding tray guide wheel, a heat-insulating paper tightening device, a paper taking device, a welding head body, a replaceable welding head, a welding machine drive device, a cable chain, and a cable box. The back of the Y-axis mounting backplate is mounted on the Y-axis moving device; The heat insulation paper feeding tray is installed on each of the left and right sides of the front of the Y-axis mounting back plate, and the welding head body is installed in the middle of the front of the Y-axis mounting back plate. Each of the heat insulation paper feeding trays is provided with a paper feeding tray guide wheel below it; The replaceable welding head is installed at the lower end of the welding head body; The replaceable welding head is provided with the heat insulation paper tightening device at both ends, which is used to keep the heat insulation paper taut and attached under the replaceable welding head; The paper receiving device is installed on the front of the Y-axis mounting back plate and is located on one side of the heat-insulating paper clamping device at one end. The cable box is mounted on the back of the Y-axis mounting backplate, and one end of the cable chain is connected to the cable box.

[0007] Furthermore, in the aforementioned welding head, the replaceable welding head is installed at the lower end of the welding head body via a threaded connection or a quick-clamp structure.

[0008] Furthermore, in the aforementioned welding head, the heat insulation paper tensioning device is a spring-loaded tension mechanism or a counterweight tensioning mechanism, used to maintain a constant tension of the heat insulation paper.

[0009] Furthermore, in the aforementioned welding head, the surface of the paper feed tray guide wheel is provided with a high-temperature resistant ceramic coating or a polytetrafluoroethylene coating.

[0010] Furthermore, in the aforementioned welding head, the paper receiving device is driven by a stepper motor or a servo motor and is equipped with a torque adjustment device.

[0011] Furthermore, the aforementioned welding head includes a cable separator and a waterproof interface inside the cable box.

[0012] Furthermore, the replaceable welding head mentioned above is made of high-purity copper alloy or nickel-plated stainless steel, and its surface in contact with the heat insulation paper is mirror-polished.

[0013] This utility model also discloses a conductive cloth welding machine, which includes the welding head described in any of the above-mentioned claims.

[0014] Furthermore, the aforementioned conductive cloth welding machine is characterized by comprising a base, an X-axis slide rail, a welding platform, a top cover, a Y-axis slide rail, a Y-axis moving device, a Y-axis mounting back plate, a heat insulation paper feeding tray, an operation screen, an information display screen, a solder paste extrusion device, a welding head, and a solder joint visual inspection device. The heat insulation paper feeding tray, solder paste extrusion device, soldering head and solder joint visual inspection device are mounted on the Y-axis mounting back plate. The Y-axis mounting backplate is mounted on the Y-axis moving device, and the Y-axis moving device is mounted on the Y-axis slide rail of the top cover; Side plates are provided on the left and right sides of the top cover, and are installed on both sides of the base through the side plates; The operation screen and the information display screen are mounted on one of the side panels; An X-axis slide rail is mounted on the base, and a rectangular welding platform is mounted on the X-axis slide rail. The welding platform is located below the Y-axis slide rail of the top cover.

[0015] This utility model also discloses the working method of the above-mentioned conductive cloth welding machine, including the following steps: S1 fixes the workpiece to be welded on the welding platform; S2 moves the solder paste extrusion device to a predetermined position via the Y-axis motion system, and extrudes solder paste quantitatively by air pressure or mechanical pushing. The S3 welding head moves to the welding position to complete the welding operation of the conductive cloth; The S4 solder joint visual inspection device acquires real-time images of solder joints, and performs quality analysis manually (remotely) or automatically. S5 can be manually or automatically adjusted based on the test results; After welding is completed, the welding platform automatically moves out and the finished product is removed.

[0016] Compared with the prior art, this utility model has the following outstanding advantages: This invention integrates an automatic feeding, tensioning, and recycling system for heat-insulating paper into the welding head, constructing a precision welding unit with automatic thermal protection. Its advantages are as follows: First, it achieves automatic feeding and replacement of the heat-insulating paper during welding, forming a reliable local thermal barrier and effectively preventing damage to the workpiece's vicinity and the platform surface from high welding temperatures, significantly improving welding process safety and product yield. Second, the dual-feed tray and tensioning device structure ensures the heat-insulating paper remains flat and taut under the welding head, avoiding welding quality defects caused by paper wrinkles or looseness; simultaneously, the standardized cable chain and cable box design ensures cable safety and signal stability during high-speed movement of the welding head. Third, the replaceable welding head adopts a quick-loading structure, combined with a modular component design, making equipment maintenance and consumable replacement more convenient, significantly reducing downtime and enhancing the equipment's applicability and overall efficiency. Attached Figure Description

[0017] Figure 1 An overall schematic diagram of the welding head described in this utility model; Figure 2A front view of the welding head described in this utility model; Figure 3 An overall schematic diagram of the conductive cloth welding machine described in this utility model; Figure 4 A front view of the conductive cloth welding machine described in this utility model.

[0018] In the diagram: Base 100, X-axis slide rail 110, welding platform 120, top cover 200, Y-axis slide rail 210, Y-axis moving device 220, Y-axis mounting back plate 230, heat insulation paper feeding tray 231, paper feeding tray guide wheel 232, heat insulation paper tightening device 233, paper receiving device 234, operation screen 240, information display screen 250, solder paste extrusion device 300, solder paste syringe 310, syringe back plate 320, through hole 321, U-shaped connecting plate 330, solder needle 340, syringe top interface 350, syringe mounting plate 360, cable connector 361, welding head 400, welding head body 410, replaceable welding head 420, welding machine drive device 430, cable chain 440, cable box 450, solder joint visual inspection device 500. Detailed Implementation

[0019] The technical solutions in the embodiments of this utility model are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] Example 1 like Figure 1 and 2 As shown, a welding head 400 includes a Y-axis moving device 220, a Y-axis mounting back plate 230, a heat insulation paper feeding tray 231, a paper feeding tray guide wheel 232, a heat insulation paper tightening device 233, a paper receiving device 234, a welding head body 410, a replaceable welding head 420, a welding machine drive device 430, a cable chain 440, and a cable box 450. The back of the Y-axis mounting back plate 230 is mounted on the Y-axis moving device 220; The heat insulation paper feeding tray 231 is installed on each of the left and right sides of the front of the Y-axis mounting back plate 230, and the welding head body 410 is installed in the middle of the front of the Y-axis mounting back plate 230. Each of the heat insulation paper feeding trays 231 is provided with a paper feeding tray guide wheel 232 below it; The replaceable welding head 420 is installed at the lower end of the welding head body 410; The replaceable welding head 420 is provided with heat insulation paper tightening device 233 at both ends, which is used to keep the heat insulation paper taut and attached under the replaceable welding head 420; The paper receiving device 234 is installed on the front of the Y-axis mounting back plate 230 and is located on one side of the heat-insulating paper clamping device 233 at one end. The cable box 450 is mounted on the back of the Y-axis mounting back plate 230, and one end of the cable chain 440 is connected to the cable box 450.

[0021] Example 2 like Figure 1 and 2 As shown, a welding head 400 includes a Y-axis moving device 220, a Y-axis mounting back plate 230, a heat insulation paper feeding tray 231, a paper feeding tray guide wheel 232, a heat insulation paper tightening device 233, a paper receiving device 234, a welding head body 410, a replaceable welding head 420, a welding machine drive device 430, a cable chain 440, and a cable box 450. The back of the Y-axis mounting back plate 230 is mounted on the Y-axis moving device 220; The heat insulation paper feeding tray 231 is installed on each of the left and right sides of the front of the Y-axis mounting back plate 230, and the welding head body 410 is installed in the middle of the front of the Y-axis mounting back plate 230. Each of the heat insulation paper feeding trays 231 is provided with a paper feeding tray guide wheel 232 below it; The replaceable welding head 420 is installed at the lower end of the welding head body 410; The replaceable welding head 420 is provided with heat insulation paper tightening device 233 at both ends, which is used to keep the heat insulation paper taut and attached under the replaceable welding head 420; The paper receiving device 234 is installed on the front of the Y-axis mounting back plate 230 and is located on one side of the heat-insulating paper clamping device 233 at one end. The cable box 450 is mounted on the back of the Y-axis mounting back plate 230, and one end of the cable chain 440 is connected to the cable box 450.

[0022] Preferably, the replaceable welding head 420 is installed at the lower end of the welding head body 410 via a threaded connection or a quick-clamp structure.

[0023] Preferably, the heat insulation paper tensioning device 233 is a spring-loaded tension mechanism or a counterweight tensioning mechanism, used to maintain a constant tension of the heat insulation paper.

[0024] Preferably, the surface of the paper feed tray guide wheel 232 is provided with a high-temperature resistant ceramic coating or a polytetrafluoroethylene coating.

[0025] Preferably, the paper receiving device 234 is driven by a stepper motor or a servo motor and is equipped with a torque adjustment device.

[0026] Preferably, the cable box 450 is provided with a cable separator and a waterproof interface inside.

[0027] Preferably, the replaceable welding head 420 is made of high-purity copper alloy or nickel-plated stainless steel, and its surface in contact with the heat insulation paper is mirror-polished.

[0028] This embodiment also discloses the following working process of the above-mentioned welding head: 1. Initial preparation and threading the paper: The operator installs the roll of heat insulation paper onto the two heat insulation paper feeding trays 231 on the left and right.

[0029] Manually pull the end of the heat insulation paper, pass it around the paper feeding tray guide wheel 232 in sequence, pass it through the heat insulation paper tightening device 233 at both ends of the replaceable welding head 420, and finally fix the paper end on the paper receiving device 234.

[0030] When the equipment is started, the paper receiving device 234 acts as the active driving source, starts and provides stable traction force, and works in conjunction with the heat insulation paper tightening device 233 to establish and maintain constant tension force in the entire heat insulation paper path, so that the heat insulation paper remains flat, taut and adhered under the replaceable welding head 420, forming a stable and reliable local thermal protection barrier.

[0031] 2. Positioning and welding: The control system commands the Y-axis moving device 220 to move the entire Y-axis mounting backplate 230 and all components fixed on it to the coordinate position set by the welding program.

[0032] Driven by the welding machine drive device 430, the welding head body 410 moves the replaceable welding head 420 downwards for welding. During this process, the stable paper tape maintained by the paper take-up device 234 and the tensioning device 233 effectively isolates the high temperature of the welding head and prevents heat damage.

[0033] 3. Paper feeding, paper stabilization, and recycling: After single-point welding is completed, the welding head body 410 is raised. The paper take-up device 234 operates according to the preset program, actively winding a certain length of heat insulation paper.

[0034] This action provides a precise traction force, pulling the two insulation paper feed trays 231 to simultaneously release an equal amount of new insulation paper. The feed tray guide wheel 232 and the insulation paper clamping device 233 ensure that the paper does not slip or wrinkle during operation.

[0035] The entire "welding-stepping paper feeding" process forms a closed-loop paper management cycle. The paper receiving device 234, as the power core, ensures that each step provides the welding head with a brand-new, flat and taut heat-insulated area.

[0036] 4. Movement and Cycling: Y-axis moving device 220 drives the welding head to move to the next welding point.

[0037] Repeat steps 2 and 3 to perform a new round of welding and insulation paper replacement.

[0038] 5. Maintenance and Replacement: When a roll of insulation paper is used up or the welding head needs to be replaced, the operator can pause the equipment.

[0039] Replacement is performed using the quick-mount structure of the replaceable welding head 420.

[0040] After replacing the paper roll, the paper feeding process is repeated, and the equipment can be put back into operation.

[0041] In summary, the core technology of this welding head lies in its active heat insulation paper management system. Driven by the paper receiving device 234, and in conjunction with the feeding disc 231, guide wheel 232, and tensioning device 233, it achieves precise, stable, and continuous feeding of the heat insulation paper, providing reliable dynamic thermal protection for precision welding and fundamentally improving the automation level and quality consistency of the welding process.

[0042] The paper take-up device 234 is essentially a standard servo / stepper motor tension take-up module. Its core components are consistent with similar products commonly found on the market.

[0043] Example 3 like Figure 3 and 4 As shown, a conductive cloth welding machine includes a welding head 400 as described in Example 1 or 2; Includes a base 100, an X-axis slide rail 110, a welding platform 120, a top cover 200, a Y-axis slide rail 210, a Y-axis moving device 220, a Y-axis mounting back plate 230, a heat insulation paper feeding tray 231, an operation screen 240, an information display screen 250, a solder paste extrusion device 300, a welding head 400, and a solder joint visual inspection device 500; The heat insulation paper feeding tray 231, solder paste extrusion device 300, soldering head 400 and solder joint visual inspection device 500 are mounted on the Y-axis mounting back plate 230. The Y-axis mounting backplate 230 is mounted on the Y-axis moving device 220, and the Y-axis moving device 220 is mounted on the Y-axis slide rail 210 of the top cover 200; The top cover 200 is provided with side plates on the left and right sides, and is installed on both sides of the base 100 through the side plates; The operation screen 240 and the information display screen 250 are mounted on one of the side panels; An X-axis slide rail 110 is mounted on the base 100, and a rectangular welding platform 120 is mounted on the X-axis slide rail 110. The welding platform 120 is located below the Y-axis slide rail 210 of the top cover 200.

[0044] The working method of the above-mentioned conductive cloth welding machine includes the following steps: S1 fixes the workpiece to be welded on the welding platform; S2 moves the solder paste extrusion device to a predetermined position via the Y-axis motion system, and extrudes solder paste quantitatively by air pressure or mechanical pushing. The S3 welding head moves to the welding position to complete the welding operation of the conductive cloth; The S4 solder joint visual inspection device acquires real-time images of solder joints, and performs quality analysis manually (remotely) or automatically. S5 can be manually or automatically adjusted based on the test results; After welding is completed, the welding platform automatically moves out and the finished product is removed.

[0045] It is worth noting that the above description of the embodiments focuses on interpreting the technical solution of this utility model, rather than precisely defining its protection scope. Those skilled in the art should understand that appropriate adjustments and optimizations can be made based on the technical details disclosed in the embodiments of this utility model, or equivalent substitutions can be implemented for individual or even all technical elements. Such adjustments and substitutions will not deviate from the core essence of the technical solution of this utility model and should be included within the technical protection scope of the embodiments of this utility model. In short, the protection of this utility model should not be limited to the concrete presentation of the above embodiments, but broadly covers all equivalent changes and improvements that do not contradict its basic concept. In summary, the protection definition of this utility model should be based on the statement of the claims, and the above embodiments are only used as a reference guide for understanding this utility model.

Claims

1. A welding head (400), characterized in that, Includes a Y-axis moving device (220), a Y-axis mounting back plate (230), a heat-insulating paper feeding tray (231), a paper feeding tray guide wheel (232), a heat-insulating paper tightening device (233), a paper receiving device (234), a welding head body (410), a replaceable welding head (420), a welding machine drive device (430), a cable chain (440), and a cable box (450); The back of the Y-axis mounting backplate (230) is mounted on the Y-axis moving device (220); The heat insulation paper feeding tray (231) is installed on each of the left and right sides of the front of the Y-axis mounting back plate (230), and the welding head body (410) is installed in the middle of the front of the Y-axis mounting back plate (230). Each of the heat insulation paper feeding trays (231) is provided with a paper feeding tray guide wheel (232) below it. The replaceable welding head (420) is installed at the lower end of the welding head body (410); The replaceable welding head (420) is provided with the heat insulation paper tightening device (233) at both ends, which is used to keep the heat insulation paper taut and attached under the replaceable welding head (420); The paper receiving device (234) is mounted on the front of the Y-axis mounting back plate (230) and located on one side of the heat-insulating paper clamping device (233) at one end; The cable box (450) is mounted on the back of the Y-axis mounting backplate (230), and one end of the cable chain (440) is connected to the cable box (450).

2. The welding head according to claim 1, characterized in that, The replaceable welding head (420) is mounted on the lower end of the welding head body (410) via a threaded connection or quick-clamp structure.

3. A welding head according to claim 1, characterized in that, The heat insulation paper tensioning device (233) is a spring-loaded tension mechanism or a counterweight tensioning mechanism, used to maintain a constant tension of the heat insulation paper.

4. A welding head according to claim 1, characterized in that, The surface of the paper feed tray guide wheel (232) is provided with a high-temperature resistant ceramic coating or a polytetrafluoroethylene coating.

5. A welding head according to claim 1, characterized in that, The paper receiving device (234) is driven by a stepper motor or a servo motor and is equipped with a torque adjustment device.

6. A welding head according to claim 1, characterized in that, The cable box (450) is equipped with a cable separator and a waterproof interface.

7. A welding head according to claim 1, characterized in that, The replaceable welding head (420) is made of high-purity copper alloy or nickel-plated stainless steel, and its surface in contact with the heat insulation paper is mirror-polished.

8. A conductive cloth welding machine, characterized in that, It contains a welding head (400) as described in any one of claims 1-7.

9. The conductive cloth welding machine according to claim 8, characterized in that, Includes a base (100), an X-axis slide rail (110), a welding platform (120), a top cover (200), a Y-axis slide rail (210), a Y-axis moving device (220), a Y-axis mounting back plate (230), a heat insulation paper feeding tray (231), an operation screen (240), an information display screen (250), a solder paste extrusion device (300), a welding head (400), and a solder joint visual inspection device (500); The heat insulation paper feeding tray (231), solder paste extrusion device (300), soldering head (400) and solder joint visual inspection device (500) are mounted on the Y-axis mounting back plate (230). The Y-axis mounting backplate (230) is mounted on the Y-axis moving device (220), and the Y-axis moving device (220) is mounted on the Y-axis slide rail (210) of the top cover (200); The top cover (200) is provided with side plates on the left and right sides, and is installed on both sides of the base (100) through the side plates; The operation screen (240) and the information display screen (250) are mounted on one of the side panels; An X-axis slide rail (110) is mounted on the base (100), and a rectangular welding platform (120) is mounted on the X-axis slide rail (110). The welding platform (120) is located below the Y-axis slide rail (210) of the top cover (200).

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