A welding device and welding method for touch screen production

Abstract

The application discloses a kind of welding device and welding method for touch screen production, belong to touch screen production welding field.A kind of welding device for touch screen production, including processing table, the processing table is separated into two groups of taking and placing storehouse and a group of welding storehouse by two groups of work station plate, and the welding storehouse is located between two groups of taking and placing storehouse, further including welding seat, the bottom of the welding seat is fixedly connected with laser welding head, and the top of two groups of work station plate is provided with the positioning portion of driving welding seat movement;The application is rotated in the flow guide disc by flow guide vane, and the smoke and dust scattered in the welding area is sucked, to ensure the environmental quality in the welding area, avoid smoke and dust particles to adhere on touch screen, improve the welding quality of touch screen, while accelerate the airflow heat exchange efficiency, realize the rapid heat dissipation of welding point, and the airflow discharged from the flow guide disc can pre-clean the touch screen not welded, ensure the neatness of touch screen surface, improve the welding quality.

Description

Technical Field

[0001] This invention relates to the field of welding technology in touch screen manufacturing, and more particularly to a welding apparatus and welding method for touch screen manufacturing. Background Technology

[0002] A touchscreen is a display device that allows users to input commands directly by touching the screen surface. It allows users to interact with computers or other electronic devices using their fingers or a dedicated stylus, without the need for a traditional keyboard and mouse. Nowadays, touchscreen technology has permeated all aspects of our lives, from smartphones and tablets to public information kiosks and industrial control systems.

[0003] Touchscreen welding technology is a key process in the field of electronic manufacturing. Common welding methods include manual welding, thermoforming welding, ultrasonic welding, and laser welding. Laser welding technology uses a high-energy-density laser beam as a heat source to connect the precision electronic components inside the touchscreen to the flexible circuit board. This welding method occupies an important position in the modern electronic manufacturing field due to its high efficiency, precision, and non-contact characteristics.

[0004] Currently, during the laser welding process of touch screens, the melting and evaporation of materials releases fine particulate dust in the welding area, which not only reduces the environmental quality in the welding area, but also causes the fine particles to adhere to the touch screen, resulting in a decrease in the final welding quality. Moreover, traditional devices require constant replacement of touch screens at the same welding station and operation of clamping mechanisms to fix them, thereby reducing welding efficiency. Therefore, a welding device and welding method for touch screen production is proposed. Summary of the Invention

[0005] The purpose of this invention is to solve the problems in the prior art where the release of fine particulate dust in the welding area not only reduces the environmental quality in the welding area but also adheres to the touch screen, resulting in reduced welding quality; and the reduced efficiency of traditional devices when replacing touch screens. Therefore, this invention proposes a welding device and welding method for touch screen production.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A welding apparatus for touchscreen production includes a processing table, which is divided into two sets of pick-and-place chambers and a welding chamber by two sets of workstation plates, with the welding chamber located between the two sets of pick-and-place chambers. It also includes a welding seat with a laser welding head fixedly connected to its bottom. Positioning parts for driving the welding seat to move are provided on the top of the two sets of workstation plates. A dust-collecting ring is fixedly connected to the side wall of the welding seat, and multiple sets of suction pipes are evenly distributed in a ring on the side wall of the dust-collecting ring, with the suction pipes facing the output end of the laser welding head. Each of the two sets of pick-and-place chambers is equipped with a dust-collecting part that generates negative pressure suction within the dust-collecting ring. Two sets of support plates are also included. A first lead screw is rotatably connected to the processing table, and the two sets of support plates are fixedly connected by a connecting plate threaded onto the first lead screw. The support plates are equipped with a negative pressure part for adsorbing and fixing the touchscreen, and the workstation plates are equipped with a detection part for inspecting the welding quality of the touchscreen.

[0008] For convenient welding positioning, preferably, the positioning part includes a mounting base, which is fixed to the top of two sets of workstation plates. Longitudinal guide rods are fixedly connected to both sides of the mounting base. A longitudinal sliding plate is slidably connected between the two sets of longitudinal guide rods. A first cylinder is fixedly connected to the outer wall of the mounting base, and the telescopic end of the first cylinder is fixed to the side wall of the longitudinal sliding plate. A transverse sliding groove is provided on the longitudinal sliding plate, and a transverse sliding block is slidably connected within the transverse sliding groove. The welding seat is fixed to the bottom of the transverse sliding block. A second cylinder is fixedly connected to the longitudinal sliding plate, and the telescopic end of the second cylinder is fixed to the side wall of the transverse sliding block.

[0009] To improve the environmental quality within the welding area, preferably, the dust collection unit includes two sets of guide plates, which are respectively fixed to the inner walls of two sets of pick-and-place chambers. Guide blades are rotatably connected inside the guide plates. A guide motor is fixedly connected to the top of the guide plates, and the output shaft of the guide motor is fixedly connected to the rotating shaft of the guide blades. A blower pipe is fixed and connected to the bottom of the guide plates. A blower box is fixed and connected to the bottom end of the blower pipe. Blower holes are evenly spaced at the bottom of the blower box. A suction pipe is fixed and connected to the upper side wall of the guide plates. The other end of the suction pipe is connected to the inner cavity of the suction ring, and a solenoid valve is installed inside the end of the suction pipe near the suction ring.

[0010] Furthermore, a filter box is fixedly connected to the suction pipe located in the loading and unloading compartment. The filter box is connected to the suction pipe. A dust filter plate is fixedly connected to the inner wall of the filter box near the guide plate. A second lead screw is rotatably connected inside the filter box. A cleaning brush is rotatably connected to the second lead screw. The bristles of the cleaning brush are in contact with the dust filter plate. The top of the cleaning brush is in contact with the top of the filter box. A drive unit for driving the second lead screw to rotate is provided on the processing table.

[0011] To improve the filtration effect, preferably, the drive unit includes a friction wheel, a linkage groove is provided at the bottom of the processing table, the friction wheel is rotatably connected in the linkage groove, the shaft of the friction wheel is connected to the end of the second lead screw through a pulley set, a friction plate is fixedly connected to the bottom of the bearing plate, the friction plate is aligned with the friction wheel, the top of the friction wheel is at the same height as the bottom of the friction plate, a drive motor is fixedly connected to the side wall of the processing table, and the output shaft of the drive motor is fixedly connected to the end of the first lead screw.

[0012] To improve stability during the touchscreen welding process, preferably, the negative pressure section includes two sets of piston boxes, which are fixed on both sides of the processing table. A piston plate is slidably connected inside each piston box. A first spring is fixedly connected between the side wall of the piston plate and the inner wall of the piston box. A push-pull rod is fixedly connected to the side wall of the piston plate. An upper magnetic plate is fixedly connected to the end of the push-pull rod. A lower magnetic plate is fixedly connected to the top of the bearing plate. A guide strip is fixedly connected to the inner wall of the processing table. The guide strip coincides with the center of the welding chamber. Negative pressure grooves are provided on both sides of the inner cavity of the guide strip. A negative pressure pipe is fixed and connected to the side wall of the piston box. The other end of the negative pressure pipe is connected to the inner cavity of the negative pressure groove. A one-way valve is provided inside the negative pressure pipe. Air transmission holes are provided on both sides of the guide strip facing the bearing plate. The air transmission holes are connected to the inner cavity of the negative pressure groove. The two sets of air transmission holes are symmetrically arranged along the center of the welding chamber.

[0013] Furthermore, the upper and lower magnetic plates are magnetically attracted to each other, and the bottom of the upper magnetic plate and the top of the lower magnetic plate are at the same height. The sum of the attraction and friction between the upper and lower magnetic plates is greater than the thrust required for the first spring to initially rebound.

[0014] Furthermore, the bearing plate has an adsorption groove inside, and adsorption holes are equally spaced on the top of the bearing plate. The adsorption holes are connected to the adsorption groove. A switching plate is fixedly connected between the two sets of bearing plate sidewalls. The switching plate is in contact with the guide strip sidewall. Ventilation grooves are provided on both sides of the switching plate. The two sets of ventilation grooves are respectively connected to the inner cavity of their corresponding adsorption grooves, and the two sets of ventilation grooves are symmetrically arranged along the center of the connecting plate.

[0015] To achieve welding inspection and improve inspection accuracy, preferably, the inspection unit includes two sets of inspection instruments. The two sets of inspection instruments are respectively fixed at the top of the empty slot in the workstation plate. The workstation plate has an air blowing slot inside. Multiple sets of exhaust holes are equally spaced on both sides of the air blowing slot, and the output end of the air blowing hole faces directly below the inspection end of the inspection instrument. The piston box sidewall is fixed and connected to an exhaust pipe. The other end of the exhaust pipe is connected to the inner cavity of the air blowing slot, and a one-way valve is installed in the exhaust pipe.

[0016] A welding method for touch screen manufacturing, comprising the following steps:

[0017] Step 1: Place the touchscreen onto the welding mount inside the pick-and-place compartment;

[0018] Step 2: Move the welding stand into the welding chamber to perform the welding operation, and place the new touch screen onto the welding stand in the other side of the pick-and-place chamber;

[0019] Step 3: Clean up the fumes generated during the welding process and clean the welding surface of the touch screen on the other side of the welding stand;

[0020] Step 4: Perform welding quality inspection on the touch screen that passes under the workstation plate after welding is completed;

[0021] Step 5: Remove the touch screen from the loading and unloading compartment after welding and testing are completed.

[0022] Compared with the prior art, the present invention provides a welding apparatus and welding method for touch screen production, which has the following beneficial effects:

[0023] 1. This welding device for touch screen production uses guide vanes rotating within a guide plate to absorb the fumes and dust drifting in the welding area, ensuring environmental quality within the welding area and preventing dust particles from adhering to the touch screen, thus improving the welding quality. In addition, it accelerates the airflow heat exchange efficiency within the welding chamber, achieving rapid heat dissipation at the welding points. Furthermore, the airflow discharged from the guide plate can pre-clean the unwelded touch screens, ensuring the cleanliness of the touch screen surface and improving the final welding quality.

[0024] 2. This welding device for touch screen production, through the cooperation between the upper and lower magnetic plates, generates corresponding pushing and adsorption airflow within the piston box. Firstly, the pushing airflow cleans the detection end of the detector and the surface of the touch screen after welding, improving the detection accuracy of welding quality. Secondly, the adsorption airflow generates negative pressure suction in the adsorption tank within the welding chamber, automatically adsorbing and fixing the touch screen, improving the welding efficiency and stability of the touch screen during the welding process.

[0025] 3. The welding device for touch screen production uses the friction between the friction plate and the friction wheel, combined with the transmission of the pulley group, to make the cleaning brush slide back and forth along the second lead screw, thereby cleaning the filter surface of the dust filter plate, ensuring the filtration effect of the dust filter plate and improving the smoothness of airflow.

[0026] 4. This welding device for touch screen production achieves multi-station operation through the continuous circulation of two sets of carrier plates in the pick-up and place chamber and the welding chamber, which effectively improves welding efficiency. Furthermore, through the cooperation between the switching plate, the ventilation groove, the air transmission hole and the venting groove, it automatically turns on and off the adsorption effect on the touch screen at different work stations, thereby further improving welding efficiency. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of a welding device for touch screen production proposed in this invention. Figure 1 ;

[0028] Figure 2 This is a schematic diagram of the overall structure of a welding device for touch screen production proposed in this invention. Figure 2 ;

[0029] Figure 3 This is a partial cross-sectional view of a welding apparatus for touchscreen production proposed in this invention. Figure 1 ;

[0030] Figure 4 This invention proposes a welding apparatus for touchscreen manufacturing. Figure 3 Enlarged structural diagram of region A in the middle;

[0031] Figure 5 This is a partial cross-sectional view of a welding apparatus for touchscreen production proposed in this invention. Figure 2 ;

[0032] Figure 6 This is a partial cross-sectional view of a welding apparatus for touchscreen production proposed in this invention. Figure 3 ;

[0033] Figure 7 This is a partial cross-sectional view of a welding apparatus for touchscreen production proposed in this invention. Figure 4 ;

[0034] Figure 8 This is a schematic diagram of a partial connection structure of the support plate of a welding device for touch screen production proposed in this invention.

[0035] In the diagram: 1. Processing table; 2. Workstation plate; 21. Loading / unloading bin; 22. Welding bin; 3. Welding seat; 31. Laser welding head; 32. Dust suction ring; 321. Smoke extraction pipe; 4. Bearing plate; 41. First lead screw; 42. Connecting plate; 43. Friction plate; 44. Drive motor; 45. Lower magnetic plate; 5. Mounting seat; 51. Longitudinal guide rod; 52. Longitudinal slide plate; 521. First cylinder; 53. Transverse slide groove; 54. Transverse slide block; 55. Second cylinder; 6. Guide plate; 61. Guide vane; 62. Guide motor; 63. Air duct; 64. Air box; 641. 65. Air blowing hole; 66. Suction pipe; 67. Filter box; 68. Filter plate; 69. Second lead screw; 60. Cleaning brush; 61. Friction wheel; 62. Linkage groove; 63. Pulley assembly; 74. Piston box; 75. Piston plate; 76. First spring; 77. Push-pull rod; 78. Upper magnetic plate; 79. Guide bar; 70. Negative pressure groove; 71. Air transmission hole; 72. Negative pressure pipe; 73. Adsorption groove; 74. Adsorption hole; 75. Switching plate; 76. Ventilation groove; 77. Vent groove; 88. Detector; 89. Air blowing groove; 80. Exhaust hole; 81. Exhaust pipe. Detailed Implementation

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0037] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0038] Example 1:

[0039] Reference Figures 1-8A welding apparatus for touch screen production includes a processing table 1, which is divided into two sets of pick-and-place chambers 21 and a welding chamber 22 by two sets of workstation plates 2, with the welding chamber 22 located between the two sets of pick-and-place chambers 21. It also includes a welding seat 3, with a laser welding head 31 fixedly connected to its bottom. Positioning parts for driving the welding seat 3 to move are provided on the top of the two sets of workstation plates 2. A dust suction ring 32 is fixedly connected to the side wall of the welding seat 3, and multiple sets of suction pipes 321 are evenly distributed in a ring on the side wall of the dust suction ring 32, with the suction pipes 321 facing the output of the laser welding head 31. The two sets of pick-up and drop-off compartments 21 are each equipped with a dust-collecting part that generates negative pressure suction within the dust-collecting ring 32; the two sets of bearing plates 4 are rotatably connected to the processing table 1 with a first lead screw 41; the two sets of bearing plates 4 are fixedly connected by a connecting plate 42, which is threaded onto the first lead screw 41; the side wall of the processing table 1 is fixedly connected to a drive motor 44, and the output shaft of the drive motor 44 is fixedly connected to the end of the first lead screw 41; the bearing plate 4 is equipped with a negative pressure part for adsorbing and fixing the touch screen, and the workstation plate 2 is equipped with a detection part for inspecting the welding quality of the touch screen.

[0040] Reference Figures 1-3 The positioning part includes a mounting base 5, which is fixed to the top of two sets of workstation plates 2. Longitudinal guide rods 51 are fixedly connected to both sides of the mounting base 5. A longitudinal slide plate 52 is slidably sleeved between the two sets of longitudinal guide rods 51. A first cylinder 521 is fixedly connected to the outer wall of the mounting base 5. The telescopic end of the first cylinder 521 is fixed to the side wall of the longitudinal slide plate 52. A transverse slide groove 53 is provided on the longitudinal slide plate 52. A transverse slide block 54 is slidably connected in the transverse slide groove 53. A welding base 3 is fixed to the bottom of the transverse slide block 54. A second cylinder 55 is fixedly connected to the longitudinal slide plate 52. The telescopic end of the second cylinder 55 is fixed to the side wall of the transverse slide block 54.

[0041] With the above structure, when the carrier plate 4 with the touch screen is moved into the welding chamber 22, the laser welding head 31 is driven to move horizontally and vertically on the touch screen surface through the cooperation between the first cylinder 521 and the second cylinder 55, so that the laser welding head 31 can complete a precise welding operation on the touch screen surface.

[0042] Reference Figures 1-3The dust collection unit includes two sets of guide plates 6, which are fixed on the inner walls of two sets of pick-up and drop-off compartments 21 respectively. Guide blades 61 are rotatably connected inside the guide plates 6. A guide motor 62 is fixedly connected to the top of the guide plates 6. The output shaft of the guide motor 62 is fixedly connected to the rotating shaft of the guide blades 61. A blower pipe 63 is fixed and connected to the bottom of the guide plates 6. A blower box 64 is fixed and connected to the bottom end of the blower pipe 63. Blower holes 641 are opened at equal intervals at the bottom of the blower box 64. A dust collection pipe 65 is fixed and connected to the upper side wall of the guide plates 6. The other end of the dust collection pipe 65 is connected to the inner cavity of the dust collection ring 32. A solenoid valve is installed inside the end of the dust collection pipe 65 near the dust collection ring 32.

[0043] With the above-described structure, while welding is being performed, the guide motor 62 above the take-up and put-down compartment 21 on the other side of the support plate 4 is turned on, causing the guide vanes 61 to rotate inside the guide plate 6. The one-way valve in the suction pipe 65 on this side is also opened. At this time, a negative pressure suction force is generated in the upper part of the inner cavity of the guide plate 6. The suction force is then transmitted along the suction pipe 65 to the suction ring 32 and finally dispersed into the surrounding suction pipes 321. This draws airflow from the welding chamber 22 and absorbs the smoke and dust particles generated during the welding process, ensuring the environmental quality in the welding area and preventing smoke and dust particles from adhering to the touch screen, thus improving the welding quality of the touch screen. In addition, it also accelerates the heat exchange efficiency of the airflow in the welding chamber 22, achieving rapid heat dissipation at the welding point. The airflow drawn into the guide plate 6 is finally discharged into the blower box 64 and then blown onto the surface of the touch screen in the support plate 4 through the blower hole 641, achieving pre-cleaning of the unwelded touch screen, ensuring the cleanliness of the touch screen surface, and thus improving the final welding quality.

[0044] Reference Figures 1-4 and Figure 7 The filter box 66 is fixedly connected to the suction pipe 65 located in the loading and unloading compartment 21. The filter box 66 is connected to the suction pipe 65. A dust filter plate 661 is fixedly connected to the inner wall of the filter box 66 near the guide plate 6. A second lead screw 67 is rotatably connected inside the filter box 66. A cleaning brush 671 is rotatably connected to the second lead screw 67. The bristles of the cleaning brush 671 are in contact with the dust filter plate 661, and the top of the cleaning brush 671 is in contact with the top of the filter box 66. The platform 1 is equipped with a drive unit that drives the second lead screw 67 to rotate; the drive unit includes a friction wheel 68, and a linkage groove 681 is opened at the bottom of the processing platform 1. The friction wheel 68 is rotatably connected in the linkage groove 681. The shaft of the friction wheel 68 is connected to the end of the second lead screw 67 through a belt pulley group 682. A friction plate 43 is fixedly connected to the bottom of the bearing plate 4. The friction plate 43 is aligned with the friction wheel 68, and the top of the friction wheel 68 and the bottom of the friction plate 43 are at the same height.

[0045] With the above-described structure, the airflow carrying smoke and dust enters the guide plate 6 after passing through the dust filter plate 661 in the filter box 66, thus ensuring the cleanliness of the blowing airflow. During the movement of the support plate 4, the friction plate 43 at its bottom moves to a position where it is in contact with the friction wheel 68. Under the action of friction, the friction wheel 68 rotates. At this time, in conjunction with the transmission action of the pulley group 682, the second lead screw 67 rotates, causing the cleaning brush 671 to slide back and forth along the second lead screw 67, thereby cleaning the filter surface of the dust filter plate 661, ensuring the filtration effect of the dust filter plate 661, and improving the smoothness of airflow.

[0046] Reference Figure 1 , Figure 3 and Figure 5 The negative pressure section includes two sets of piston boxes 7, which are fixed on both sides of the processing table 1. A piston plate 71 is slidably connected inside each piston box 7. A first spring 711 is fixedly connected between the side wall of the piston plate 71 and the inner wall of the piston box 7. A push-pull rod 72 is fixedly connected to the side wall of the piston plate 71, and an upper magnetic plate 721 is fixedly connected to the end of the push-pull rod 72. A lower magnetic plate 45 is fixedly connected to the top of the bearing plate 4. The detection section includes two sets of detectors 8, which use existing... Mature technology, specific model can be LJ-X8000. Two sets of detectors 8 are fixed at the top of the empty slot in the workstation plate 2. The workstation plate 2 has a blowing slot 81 inside. Multiple sets of exhaust holes 82 are opened at equal intervals on both sides of the blowing slot 81. The output end of the exhaust hole 82 faces directly below the detection end of the detector 8. The piston box 7 is fixed to the side wall and connected to the exhaust pipe 83. The other end of the exhaust pipe 83 is connected to the inner cavity of the blowing slot 81. A one-way valve is installed in the exhaust pipe 83.

[0047] It should be noted that the one-way valve in the exhaust pipe 83 can only allow the gas in the piston box 7 to enter the blower 81.

[0048] With the above structure, as the carrier plate 4 moves from the welding chamber 22 to the pick-and-place chamber 21, the lower magnetic plate 45 on the carrier plate 4 will move to a position where it is in contact with the upper magnetic plate 721. At this time, under the action of the attraction and friction between the lower magnetic plate 45 and the upper magnetic plate 721, the upper magnetic plate 721 and the push rod 72 will push the piston plate 71 to slide towards the side that compresses the first spring 711, thereby compressing the gas inside the piston box 7 and opening the one-way valve in the exhaust pipe 83, so that the compressed gas enters the air blowing slot 81 along the exhaust pipe 83, and then is discharged simultaneously along multiple sets of exhaust holes 82 towards the detection end of the detector 8. This is to blow and clean the surface of the welded touch screen that has moved to the detection end of the detector 8, so as to avoid the adhesion of welding slag particles on it and cause inaccurate detection. At the same time, the airflow is used to clean the detection end of the detector 8, thereby improving the detection accuracy of welding quality.

[0049] Reference Figure 1 , Figure 3 , Figures 5-8 The machining table 1 has a guide strip 73 fixedly connected to its inner wall. The guide strip 73 coincides with the center of the welding chamber 22. Negative pressure grooves 731 are provided on both sides of the inner cavity of the guide strip 73. A negative pressure pipe 74 is fixed to and connected to the side wall of the piston box 7. The other end of the negative pressure pipe 74 is connected to the inner cavity of the negative pressure groove 731. A one-way valve is provided in the negative pressure pipe 74. Air transmission holes 732 are provided on both sides of the guide strip 73 facing the bearing plate 4. The air transmission holes 732 are connected to the inner cavity of the negative pressure groove 731. The two sets of air transmission holes 732 are symmetrically arranged along the center of the welding chamber 22. The upper magnetic plate 721 and the lower magnetic plate 45 are magnetically attracted to each other. The bottom of the upper magnetic plate 721 and the top of the lower magnetic plate 45 are at the same height. The sum of the attraction and friction between the upper magnetic plate 721 and the lower magnetic plate 45 is greater than the thrust required for the initial rebound of the first spring 711; an adsorption groove 75 is provided inside the bearing plate 4, and adsorption holes 751 are provided at equal intervals on the top of the bearing plate 4. The adsorption holes 751 are connected to the adsorption groove 75. A switching plate 76 is fixedly connected between the side walls of the two sets of bearing plates 4. The switching plate 76 is in contact with the side wall of the guide strip 73. Ventilation grooves 761 are provided on both sides of the switching plate 76. The two sets of ventilation grooves 761 are connected to the inner cavity of their corresponding adsorption grooves 75. The two sets of ventilation grooves 761 are symmetrically arranged along the center of the connecting plate 42. Vent grooves 77 are provided on both sides of the guide strip 73.

[0050] It should be noted that the one-way valve in the negative pressure pipe 74 can only allow the gas in the negative pressure groove 731 to be drawn into the piston box 7.

[0051] With the above structure, when the thrust required for the first spring 711 to rebound is greater than the sum of the attraction and friction between the lower magnetic plate 45 and the upper magnetic plate 721, the lower magnetic plate 45 and the upper magnetic plate 721 will separate. At this time, under the rebound action of the first spring 711, the piston plate 71 will quickly rebound and reset, generating a negative pressure attraction in the piston box 7, thereby opening the one-way valve in the negative pressure pipe 74, so that the gas in the negative pressure groove 731 is drawn into the piston box 7. At this time, both the negative pressure groove 731 and the piston box 7 are in a negative pressure state. During the movement of the bearing plate 4, the switching plate 76 slides along the surface of the guide strip 73 and blocks the air transmission hole 732 and the ventilation groove 761. When the bearing plate 4 in the pick-and-place chamber 21 moves to the center of the welding chamber 22, the drive motor 44 stops rotating. At this time, the ventilation groove 76 on the bearing plate 4 is closed. 1 will communicate with its corresponding air transmission hole 732, and the negative pressure effect of the negative pressure groove 731 and the piston box 7 will also be transmitted to the adsorption groove 75 along the air transmission hole 732 and the ventilation groove 761, thereby generating negative pressure suction in the adsorption hole 751 at the bottom of the touch screen, which will automatically achieve adsorption and fixation of the touch screen, improving the welding efficiency and stability of the touch screen during the welding process; at the same time, the switching plate 76 will move away from blocking the air transmission hole 732 on the other side, so that the air transmission hole 732 is connected to the outside, so that the air pressure in the piston box 7 returns to normal. At the same time, the ventilation groove 761 on the other side of the switching plate 76 will move to the venting groove 77, so that the negative pressure state of the adsorption groove 75 disappears, so that the welded touch screen can be taken out. In this way, the adsorption effect of the touch screen can be turned on and off at different work positions, effectively improving the welding processing efficiency.

[0052] Example 2:

[0053] Reference Figures 1-8 Similar to Example 1, but based on Example 1, a welding method for touchscreen production is proposed, with the following steps:

[0054] Step 1: Place the touch screen onto the welding seat 3 inside the pick-and-place compartment 21;

[0055] Step 2: Move the welding stand 3 into the welding chamber 22 to perform the welding operation, and place the new touch screen onto the welding stand 3 in the other side of the pick-and-place chamber 21;

[0056] Step 3: Clean up the fumes generated during the welding process and clean the welding surface of the touch screen on the other side of the welding base 3;

[0057] Step 4: Perform welding quality inspection on the touch screen that passes under workstation plate 2 after welding is completed;

[0058] Step 5: Remove the touch screen from the pick-and-place compartment 21 after welding and testing.

[0059] Reference Figures 1-8 In this invention, when used, such as Figure 1 As shown, the touch screen is placed on the carrier plate 4 in the pick-and-place compartment 21, and then the drive motor 44 is turned on, which drives the first lead screw 41 to rotate, so that the connecting plate 42 slides along the first lead screw 41 with the two sets of carrier plates 4, and the carrier plates 4 in the pick-and-place compartment 21 are moved into the welding compartment 22, while the carrier plates 4 in the original welding compartment 22 are moved into the pick-and-place compartment 21 on the other side. At this time, a new touch screen can be placed in the pick-and-place compartment 21 on the other side or the welded touch screen can be taken out.

[0060] As the carrier plate 4 moves from the welding chamber 22 to the loading / unloading chamber 21, the lower magnetic plate 45 on the carrier plate 4 moves to a position where it contacts the upper magnetic plate 721. At this time, under the action of the attraction and friction between the lower magnetic plate 45 and the upper magnetic plate 721, the upper magnetic plate 721 and the push rod 72 push the piston plate 71 to slide towards the side that compresses the first spring 711, thereby compressing the gas inside the piston box 7 and opening the one-way valve in the exhaust pipe 83, so that the compressed gas enters the blowing slot 81 along the exhaust pipe 83, and then is discharged simultaneously along multiple sets of exhaust holes 82 towards the detection end of the detector 8, thereby affecting the gas moving to the detection end of the detector 8. After the welding is completed, the touch screen surface is cleaned by blowing air to prevent welding slag particles from adhering to it and causing inaccurate detection. At the same time, the airflow is used to clean the detection end of the detector 8, thereby improving the detection accuracy of the welding quality. In addition, the welding quality of the touch screen is directly detected during operation, simplifying the processing steps and effectively improving the processing efficiency. When the thrust required for the first spring 711 to rebound is greater than the sum of the attraction and friction between the lower magnetic plate 45 and the upper magnetic plate 721, the lower magnetic plate 45 and the upper magnetic plate 721 will separate. At this time, under the rebound action of the first spring 711, the piston plate 71 will quickly rebound and reset, and return to its original position in the piston box 7. A negative pressure suction is generated, which opens the one-way valve in the negative pressure pipe 74, allowing the gas in the negative pressure groove 731 to be drawn into the piston box 7. At this time, both the negative pressure groove 731 and the piston box 7 are under negative pressure. During the movement of the bearing plate 4, the switching plate 76 slides along the surface of the guide strip 73 and blocks the air transmission hole 732 and the ventilation groove 761. When the bearing plate 4 in the take-up and put-down chamber 21 moves to the center of the welding chamber 22, the drive motor 44 stops rotating. At this time, the ventilation groove 761 on the bearing plate 4 will communicate with its corresponding air transmission hole 732. The negative pressure in the negative pressure groove 731 and the piston box 7 will also flow along the air transmission hole 732 and the ventilation groove 761. The suction is transferred to the adsorption tank 75, thereby generating negative pressure in the adsorption hole 751 at the bottom of the touch screen, which automatically adsorbs and fixes the touch screen, improving the welding efficiency and stability of the touch screen during the welding process. At the same time, the switching plate 76 will move away from blocking the air passage 732 on the other side, allowing the air passage 732 to connect with the outside, so that the air pressure in the piston box 7 returns to normal. At the same time, the venting groove 761 on the other side of the switching plate 76 will move to the venting groove 77, so that the negative pressure state of the adsorption tank 75 disappears, so that the welded touch screen can be removed. This automatically turns the adsorption effect on the touch screen on and off at different work stations, effectively improving the welding processing efficiency.

[0061] When the carrier plate 4 containing the touch screen moves into the welding chamber 22, the laser welding head 31 is driven to move on the touch screen surface through the cooperation between the first cylinder 521 and the second cylinder 55, allowing the laser welding head 31 to complete a precise welding operation on the touch screen surface. Simultaneously, the guide motor 62 above the loading / unloading chamber 21 on the other side of the carrier plate 4 is activated, causing the guide vanes 61 to rotate within the guide plate 6. This also opens the one-way valve in the suction pipe 65 on this side, generating negative pressure suction in the upper part of the inner cavity of the guide plate 6. This suction force is then transmitted along the suction pipe 65 to the suction ring 32 and finally dispersed into the surrounding suction pipes 321, thereby extracting the welding chamber 2. The airflow within the welding chamber 22 absorbs the fumes and dust particles generated during the welding process, ensuring the environmental quality within the welding area and preventing fumes and dust particles from adhering to the touchscreen, thus improving the welding quality of the touchscreen. In addition, it also accelerates the heat exchange efficiency of the airflow within the welding chamber 22, achieving rapid heat dissipation at the welding points. At the same time, the airflow carrying fumes and dust enters the guide plate 6 after passing through the dust filter plate 661 in the filter box 66, thus ensuring the cleanliness of the blowing airflow. Then it enters the blowing box 64 and is blown onto the touchscreen surface within the support plate 4 through the blowing holes 641, achieving pre-cleaning of the unwelded touchscreen and ensuring the cleanliness of the touchscreen surface, thereby improving the final welding quality.

[0062] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A welding apparatus for touch screen production, comprising a processing table (1), characterized in that, The processing table (1) is divided into two sets of pick-and-place bins (21) and one set of welding bins (22) by two sets of workstation plates (2), and the welding bins (22) are located between the two sets of pick-and-place bins (21), and also includes: A welding seat (3) is provided, with a laser welding head (31) fixedly connected to the bottom of the welding seat (3). The tops of the two sets of workstation plates (2) are provided with positioning parts to drive the welding seat (3) to move. The welding seat (3) is fixedly connected to a dust-collecting ring (32) on its side wall. The side wall of the dust-collecting ring (32) is distributed with multiple sets of smoke-collecting tubes (321) at equal intervals. The smoke-collecting tubes (321) face the output end of the laser welding head (31). Both sets of the take-up and put-down chambers (21) are equipped with dust-collecting parts that generate negative pressure suction in the dust-collecting ring (32). Two sets of bearing plates (4) are provided. A first lead screw (41) is rotatably connected inside the processing table (1). The two sets of bearing plates (4) are fixedly connected by a connecting plate (42), which is threaded onto the first lead screw (41). The carrier plate (4) is provided with a negative pressure part for adsorbing and fixing the touch screen, and the work station plate (2) is provided with a detection part for inspecting the welding quality of the touch screen. The dust collection unit includes two sets of guide plates (6), which are fixed on the inner walls of two sets of take-up and put-down compartments (21). Guide blades (61) are rotatably connected inside the guide plates (6). A guide motor (62) is fixedly connected to the top of the guide plates (6). The output shaft of the guide motor (62) is fixedly connected to the rotating shaft of the guide blades (61). A blower pipe (63) is fixed and connected to the bottom of the guide plates (6). A blower box (64) is fixed and connected to the bottom end of the blower pipe (63). Blower holes (641) are opened at equal intervals at the bottom of the blower box (64). A dust collection pipe (65) is fixed and connected to the upper side wall of the guide plates (6). The other end of the dust collection pipe (65) is connected to the inner cavity of the dust collection ring (32). A solenoid valve is installed inside the end of the dust collection pipe (65) near the dust collection ring (32). A filter box (66) is fixedly connected to the suction pipe (65) located in the loading and unloading compartment (21). The filter box (66) is connected to the suction pipe (65). A dust filter plate (661) is fixedly connected to the inner wall of the filter box (66) near the guide plate (6). A second lead screw (67) is rotatably connected inside the filter box (66). A cleaning brush (671) is rotatably connected to the second lead screw (67). The bristles of the cleaning brush (671) are in contact with the dust filter plate (661). The top of the cleaning brush (671) is in contact with the top of the filter box (66). A drive unit for driving the second lead screw (67) to rotate is provided on the processing table (1). The drive unit includes a friction wheel (68), and a linkage groove (681) is provided at the bottom of the processing table (1). The friction wheel (68) is rotatably connected in the linkage groove (681). The shaft of the friction wheel (68) is connected to the end of the second lead screw (67) through a pulley group (682). A friction plate (43) is fixedly connected to the bottom of the bearing plate (4). The friction plate (43) is aligned with the friction wheel (68). The top of the friction wheel (68) is at the same height as the bottom of the friction plate (43). A drive motor (44) is fixedly connected to the side wall of the processing table (1). The output shaft of the drive motor (44) is fixedly connected to the end of the first lead screw (41).

2. The welding apparatus for touch screen production according to claim 1, characterized in that, The positioning part includes a mounting base (5), which is fixed on the top of two sets of workstation plates (2). Both sides of the mounting base (5) are fixedly connected with longitudinal guide rods (51). A longitudinal slide plate (52) is slidably sleeved between the two sets of longitudinal guide rods (51). A first cylinder (521) is fixedly connected to the outer wall of the mounting base (5). The telescopic end of the first cylinder (521) is fixed on the side wall of the longitudinal slide plate (52). A transverse slide groove (53) is provided on the longitudinal slide plate (52). A transverse slide block (54) is slidably connected in the transverse slide groove (53). The welding seat (3) is fixed at the bottom of the transverse slide block (54). A second cylinder (55) is fixedly connected to the longitudinal slide plate (52). The telescopic end of the second cylinder (55) is fixed on the side wall of the transverse slide block (54).

3. The welding apparatus for touch screen production according to claim 1, characterized in that, The negative pressure section includes two sets of piston boxes (7), which are fixed on both sides of the processing table (1). A piston plate (71) is slidably connected inside the piston box (7). A first spring (711) is fixedly connected between the side wall of the piston plate (71) and the inner wall of the piston box (7). A push-pull rod (72) is fixedly connected to the side wall of the piston plate (71). An upper magnetic plate (721) is fixedly connected to the end of the push-pull rod (72). A lower magnetic plate (45) is fixedly connected to the top of the bearing plate (4). A guide strip (73) is fixedly connected to the inner wall of the processing table (1). The guide bar (73) coincides with the center of the welding chamber (22). Negative pressure grooves (731) are provided on both sides of the inner cavity of the guide bar (73). The side wall of the piston box (7) is fixed and connected to a negative pressure pipe (74). The other end of the negative pressure pipe (74) is connected to the inner cavity of the negative pressure groove (731). A one-way valve is provided in the negative pressure pipe (74). Air transmission holes (732) are provided on both sides of the guide bar (73) facing the bearing plate (4). The air transmission holes (732) are connected to the inner cavity of the negative pressure groove (731). The two sets of air transmission holes (732) are symmetrically arranged along the center of the welding chamber (22).

4. The welding apparatus for touch screen production according to claim 3, characterized in that, The upper magnetic plate (721) and the lower magnetic plate (45) are magnetically attracted to each other, and the bottom of the upper magnetic plate (721) and the top of the lower magnetic plate (45) are at the same height. The sum of the attraction and friction between the upper magnetic plate (721) and the lower magnetic plate (45) is greater than the thrust required for the first spring (711) to initially rebound.

5. The welding apparatus for touch screen production according to claim 4, characterized in that, The bearing plate (4) has an adsorption groove (75) inside. The top of the bearing plate (4) has adsorption holes (751) at equal intervals. The adsorption holes (751) are connected to the adsorption groove (75). A switching plate (76) is fixedly connected between the side walls of the two sets of bearing plates (4). The switching plate (76) is in contact with the side wall of the guide strip (73). Ventilation grooves (761) are provided on both sides of the switching plate (76). The two sets of ventilation grooves (761) are connected to the inner cavity of their corresponding adsorption grooves (75). The two sets of ventilation grooves (761) are symmetrically arranged along the center of the connecting plate (42).

6. The welding apparatus for touch screen production according to claim 3, characterized in that, The detection unit includes two sets of detectors (8). The two sets of detectors (8) are fixed at the top of the empty slot in the work station plate (2). The work station plate (2) has a blower slot (81) inside. Multiple sets of exhaust holes (82) are opened at equal intervals on both sides of the blower slot (81). The output end of the exhaust hole (82) faces directly below the detection end of the detector (8). The piston box (7) is fixed to the side wall and connected to an exhaust pipe (83). The other end of the exhaust pipe (83) is connected to the inner cavity of the blower slot (81). A one-way valve is installed in the exhaust pipe (83).

7. A welding method for touchscreen production, employing a welding apparatus for touchscreen production as described in any one of claims 1-6, characterized in that, The steps are as follows: Step 1: Place the touch screen onto the welding seat (3) inside the pick-and-place compartment (21); Step 2: Move the welding stand (3) into the welding chamber (22) for welding operations, and place the new touch screen onto the welding stand (3) in the other side of the pick-and-place chamber (21); Step 3: Clean the fumes generated during the welding process and clean the touch screen welding surface on the other side of the welding seat (3); Step 4: Perform welding quality inspection on the touch screen that passes under the workstation plate (2) after welding is completed; Step 5: Remove the touch screen from the pick-and-place compartment (21) after welding and testing are completed.

Images