Electronic circuit board welding positioning tool
By designing an automated clamping and welding mechanism and combining infrared welding technology, the problem of inconvenient welding of circuit boards in the existing technology is solved, efficient continuous welding and welding position flexibility is achieved, and circuit boards and welding quality is protected.
Patent Information
- Application Number
- CN202411529544.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2024-12-27
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing electronic circuit board welding positioning tooling cannot realize the automatic placement and removal of circuit boards, and the welding process is inconvenient.
An electronic circuit board welding positioning tool including a substrate, a clamping positioning mechanism, a welding mechanism and a storage box is designed. Through the motor driving the pallet rotation, the coordination of the electric push rod and the trapezoidal plate, the automatic clamping of the circuit board and the Welding, local heating is performed using infrared radiation equipment, solder paste is sprayed through a diaphragm pump, and exhaust gas is treated through a pumping fan and filter element.
Continuous automatic welding of circuit boards is realized, welding efficiency is improved, welding position is ensured, human operation is reduced, the integrity of circuit boards is protected, and the risk of physical damage is reduced through infrared welding.
Smart Images
Figure CN119187765A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of electronic circuit board production, and in particular to a welding positioning tool for an electronic circuit board. Background Art
[0002] Electronic circuit boards are an indispensable part of electronic devices. They provide electrical connections and mechanical support to help electronic components such as resistors, capacitors, chips, etc. realize the functions of the circuit. Most PCBs are made of epoxy resin and glass fiber materials, which have good insulation and heat resistance.
[0003] After searching, CN220515903U discloses an electronic circuit board welding positioning tool, including a base, a movable arm one and a movable arm two, the movable arm one and the movable arm two are respectively provided with an opening one and an opening two, the opening one and the opening two are penetrated by bolts, and the ends of the bolts abut against the outer wall of the base, the movable arm one is slidably connected to a round rod one, the movable arm two is rotatably connected to a round rod two, the end of the round rod one is fixedly connected to a clamping block one, and the round rod two is fixedly connected to a clamping block two; however, there are the following problems: the placement and removal of the circuit board cannot be performed automatically, which is inconvenient during the welding process.
[0004] In order to solve the above problems, we proposed an electronic circuit board welding positioning tool. Summary of the invention
[0005] The purpose of the present invention is to solve the problems existing in the background technology and to propose an electronic circuit board welding positioning tool.
[0006] In order to achieve the above object, the present invention adopts the following technical solutions: The welding positioning tool for an electronic circuit board comprises a base plate, a vertical rod is fixed to the lower side wall of the base plate, a bottom plate is fixed to the lower end of the vertical rod, a notch is provided on the base plate, a motor 1 is fixedly embedded on the inner wall of the notch, a driving end of the motor 1 is fixedly connected to a support plate, a clamping positioning mechanism and a welding mechanism are arranged on the base plate; the clamping positioning mechanism comprises a slide groove symmetrically provided on the outer wall of the base plate, a trapezoidal plate 1 is slidably provided in the slide groove, an electric push rod is fixedly connected to the end of the base plate, a U-shaped plate is fixedly connected to the end of the U-shaped plate, a trapezoidal plate 2 in contact with the trapezoidal plate 1, and the inclined surface of the trapezoidal plate 1 is in contact with the inclined surface of the trapezoidal plate 2; a material storage box is provided on the upper side of the base plate, a symmetrically arranged fixed plate is fixedly connected to the end of the base plate, a conveying roller 1 driven by a motor 1 is installed between the two fixed plates, a groove is provided on the support plate, and a conveying roller 2 driven by a motor 2 is installed in the groove.
[0007] In order to better achieve the above-mentioned purpose, the present invention adopts a further technical solution: the inner walls on both sides of the slide groove are provided with extension grooves, the outer wall of the trapezoidal plate 1 is fixedly connected with an extension plate located in the extension groove, and a return spring is fixedly connected between the extension plate and the inner wall of the extension groove.
[0008] In order to better achieve the above-mentioned purpose, the present invention adopts a further technical solution: the welding mechanism includes a second motor fixedly embedded in the lower side wall of the substrate, the driving end of the second motor is fixedly connected with a connecting piece, the outer wall of the connecting piece is fixedly connected with an X-axis guide rail, the X-axis guide rail includes a guide rail 1 and a slider 1 installed on the guide rail 1, the upper side wall of the slider is fixed with a Z-axis guide rail, the Z-axis guide rail includes a guide rail 2 and a slider 2 installed on the guide rail 2, the upper side wall of the slider 2 is fixed with a mounting tube, an infrared radiation device is installed in the mounting tube, the outer wall of the mounting tube is fixedly connected with a connecting plate, the end of the connecting plate is located on the upper side wall of the substrate and is fixedly connected with a feeding tube.
[0009] In order to better achieve the above-mentioned purpose, the present invention adopts a further technical solution: a storage tank is fixed at the end of the connecting plate, and solder paste is stored in the storage tank. A plurality of nozzles are opened on the lower side wall of the feed pipe, and the nozzles are arranged toward the center line of the feed pipe. A diaphragm pump is connected between the output end of the storage tank and the plurality of nozzles.
[0010] In order to better achieve the above-mentioned objectives, the present invention adopts a further technical solution: an oil cylinder 1 is fixedly connected to the outer wall of the storage box, a driving end of the oil cylinder 1 is fixedly connected to a right-angle plate, an end of the right-angle plate is fixedly connected to an extrusion plate slidably inserted on the outer wall of the storage box, an oil cylinder 2 is fixed to the upper side wall of the base plate, and the driving end of the oil cylinder 2 is fixedly connected to the lower side wall of the storage box.
[0011] In order to better achieve the above-mentioned purpose, the present invention adopts a further technical solution: the upper side wall of the substrate is fixedly connected with a pillar, the upper end of the pillar is fixedly connected with an exhaust gas treatment tank, the upper and lower side walls of the exhaust gas treatment tank are respectively provided with an air inlet and an air outlet, an exhaust fan is fixed in the air inlet, a movable plate is slidably arranged in the exhaust gas treatment tank, a plurality of through grooves are arranged on the movable plate, and filter elements are fixedly arranged in the plurality of through grooves.
[0012] In order to better achieve the above-mentioned purpose, the present invention adopts a further technical solution: an opening is provided on the exhaust gas treatment tank, a rotating roller driven by motor three is arranged in the opening, and the rotating roller contacts the upper side wall of the movable plate.
[0013] The advantages of the present invention are: The oil cylinder 2 adjusts the distance between the material storage box and the conveying roller 1 to make the distance equal to the thickness of the circuit board, so that the lowest circuit board falls onto the conveying roller 1. Then, the driving end of the oil cylinder 1 is retracted, so that the extrusion plate moves inward and contacts with other circuit boards in the material storage box to prevent the circuit board from moving downward. Then, the driving end of the oil cylinder 2 is extended to raise the material storage box. At this time, the starting motor 1 drives the conveying roller 1 to rotate, driving the circuit board to move forward to the pallet. Since the height of the material storage box is increased, no friction will be caused during the movement of the circuit board, thereby protecting the integrity of the circuit board. After the circuit board moves to the support plate, the driving end of the electric push rod is retracted, driving the U-shaped plate and the trapezoidal plate 2 to move. The trapezoidal plate 1 and the trapezoidal plate 2 are both right-angle trapezoids, and the inclined surfaces of the two are in contact. When the trapezoidal plate 2 moves, it squeezes the trapezoidal plate 1 to move toward the middle of the base plate, so that the two trapezoidal plates 1 can clamp and position the circuit board to ensure stability during the welding process; When welding, the welding position is adjusted by the movement of the X-axis guide and the Z-axis guide. The solder paste required for welding is pumped into the nozzle through a diaphragm pump and then sprayed out. The parts to be welded are placed in the feed pipe and slide down to contact with the solder paste. The infrared radiation device is started to emit infrared light waves to directly transfer heat to the circuit board. The heat melts the solder paste, so that the components and the circuit board are initially contacted and connected. After the infrared radiation device is stopped, the welding area cools and solidifies to form a reliable solder joint. During the welding process, the exhaust fan draws the exhaust gas from the welding process into the exhaust gas treatment tank, and the exhaust gas is discharged from the air outlet after being adsorbed by the filter element. To avoid the filter element being fully adsorbed, the motor 3 can be started to drive the rotating roller to rotate, and the friction between the rotating roller and the moving plate drives the moving plate to move, so that the next filter element is located between the air inlet and the air outlet, and the filter element is replaced; In summary, the present invention completes the welding work of the circuit board through the feeding of the material storage box and the operation of the welding mechanism, and completes the export of the welded circuit board through the rotation of the support plate, thereby realizing continuous welding of the circuit board without manual loading and unloading of materials. At the same time, the welding position is adjustable, and continuous welding work in multiple positions can be realized, thereby improving the welding work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a structural schematic diagram of the electronic circuit board welding positioning tooling proposed by the present invention; Figure 2 The schematic diagram of the structure of the electronic circuit board welding positioning tooling proposed by the present invention from different viewing angles; Figure 3 This is a schematic diagram of the structure of the electronic circuit board welding positioning tooling proposed by the present invention after the support plate is rotated; Figure 4 This is a structural schematic diagram of a trapezoidal plate 1 in the electronic circuit board welding positioning tooling proposed by the present invention; Figure 5 for Figure 1 A magnified view of the structure in part A.
[0015] In the figure: 1 base plate, 2 upright pole, 3 bottom plate, 4 trapezoidal plate 1, 5 electric push rod, 6 trapezoidal plate 2, 7 U-shaped plate, 8 return spring, 9 connecting piece, 10 X-axis guide rail, 11 Z-axis guide rail, 12 mounting pipe, 13 connecting plate, 14 feeding pipe, 15 storage box, 16 cylinder 1, 17 right angle plate, 18 extrusion plate, 19 cylinder 2, 20 support plate, 21 conveying roller 1, 22 conveying roller 2, 23 support, 24 air outlet, 25 exhaust gas treatment tank, 26 rotating roller, 27 moving plate, 28 through slot, 29 extension plate. DETAILED DESCRIPTION
[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0017] Reference Figure 1-Figure 5 As shown, the electronic circuit board welding positioning tool comprises a base plate 1, a vertical pole 2 is fixed to the lower side wall of the base plate 1, a bottom plate 3 is fixed to the lower end of the vertical pole 2, a notch is provided on the base plate 1, a motor 1 is fixedly embedded on the inner wall of the notch, a support plate 20 is fixedly connected to the driving end of the motor 1, a clamping positioning mechanism and a welding mechanism are provided on the base plate 1, the support plate 20 can be rotated by the rotation of the driving end of the motor 1 to achieve horizontal or tilted, the circuit board can be placed for welding when horizontal, and the welded circuit board can be led out when tilted; the clamping positioning mechanism includes A slide groove is symmetrically opened on the outer wall of the base plate 1, a trapezoidal plate 4 is slidably arranged in the slide groove, an electric push rod 5 is fixedly connected to the end of the base plate 1, a U-shaped plate 7 is fixedly connected to the driving end of the electric push rod 5, the end of the U-shaped plate 7 is fixedly connected to a trapezoidal plate 2 6 in contact with the trapezoidal plate 1 4, the inclined surface of the trapezoidal plate 1 4 is in contact with the inclined surface of the trapezoidal plate 2 6, extension grooves are opened on the inner walls on both sides of the slide groove, an extension plate 29 located in the extension groove is fixedly connected to the outer wall of the trapezoidal plate 1 4, and a reset spring 8 is fixedly connected between the extension plate 29 and the inner wall of the extension groove.
[0018] The oil cylinder 19 adjusts the distance between the material storage box 15 and the conveying roller 21 to make the distance equal to the thickness of the circuit board, so that the lowest circuit board falls onto the conveying roller 21. After that, the driving end of the oil cylinder 16 is retracted to move the extrusion plate 18 inwards to contact with other circuit boards in the material storage box 15 to prevent the circuit board from moving downwards. After that, the driving end of the oil cylinder 19 is extended to raise the material storage box 15. At this time, the motor 1 is started to drive the conveying roller 21 to rotate, and the circuit board is driven to move forward to the support plate 20. Since the height of the material storage box 15 is increased, no friction will be caused during the movement of the circuit board, thereby protecting the integrity of the circuit board. After the circuit board moves onto the support plate 20, the driving end of the electric push rod 5 is retracted, driving the U-shaped plate 7 and the trapezoidal plate 2 6 to move. The trapezoidal plate 1 4 and the trapezoidal plate 2 6 are both right-angled trapezoids, and the inclined surfaces of the two are in contact. When the trapezoidal plate 2 6 moves, it will squeeze the trapezoidal plate 1 4 to move toward the middle of the substrate 1, so that the two trapezoidal plates 1 4 can clamp and position the circuit board to ensure stability during the welding process.
[0019] A material storage box 15 is arranged on the upper side of the base plate 1, and a symmetrically arranged fixed plate is fixedly connected to the end of the base plate 1, a conveying roller 21 driven by a motor 1 is installed between the two fixed plates, a groove is opened on the support plate 20, and a conveying roller 22 driven by a motor 2 is installed in the groove, an oil cylinder 16 is fixedly connected to the outer wall of the material storage box 15, a right-angle plate 17 is fixedly connected to the driving end of the oil cylinder 16, and an extrusion plate 18 slidably inserted on the outer wall of the material storage box 15 is fixedly connected to the end of the right-angle plate 17, and an extrusion plate 18 slidably inserted on the outer wall of the material storage box 15 is fixedly connected to the upper side wall of the base plate 1, and a oil cylinder 2 19 is fixedly connected to the driving end of the oil cylinder 2 19 and the lower side wall of the material storage box 15.
[0020] The welding mechanism includes a motor 2 fixedly embedded in the lower side wall of the substrate 1, a connecting piece 9 is fixedly connected to the driving end of the motor 2, an X-axis guide rail 10 is fixedly connected to the outer wall of the connecting piece 9, the X-axis guide rail 10 includes a guide rail 1 and a slider 1 installed on the guide rail 1, a Z-axis guide rail 11 is fixed to the upper side wall of the slider, the Z-axis guide rail 11 includes a guide rail 2 and a slider 2 installed on the guide rail 2, a mounting tube 12 is fixed to the upper side wall of the slider 2, an infrared radiation device is installed in the mounting tube 12, a connecting plate 13 is fixedly connected to the outer wall of the mounting tube 12, and an end of the connecting plate 13 is located on the upper side wall of the substrate 1 and fixed A feed pipe 14 is fixedly connected. When welding, the welding position is adjusted by the movement of the X-axis guide rail 10 and the Z-axis guide rail. The solder paste required for welding is pumped into the nozzle through a diaphragm pump and then sprayed out. The parts to be welded are placed in the feed pipe 14 and slide down to contact with the solder paste. The infrared radiation device is started to emit infrared light waves to directly transfer heat to the circuit board. The solder paste is melted by the heat, so that the components and the circuit board are initially contacted and connected. After the infrared radiation device is stopped, the welding area is cooled and solidified to form a reliable solder joint. The position of the feed pipe 14 is continuously adjusted to perform multiple and continuous welding operations.
[0021] Advantages of infrared radiation equipment welding: Local heating: Infrared welding can achieve precise local heating and reduce the thermal impact on other components and PCBs; Fast welding: Infrared heating is fast and can improve production efficiency; No contact required: Infrared welding avoids direct contact and reduces the risk of physical damage.
[0022] After welding is completed, start motor 2 to drive connecting piece 9 to rotate, so that X-axis guide rail 10 and Z-axis guide rail rotate to the outside. At this time, support plate 20 can rotate downward, start motor 1 to drive support plate 20 to rotate, rotate to tilt, and the welded circuit board slides down along support plate 20 and is exported. Repeat the above process to achieve continuous circuit board welding work.
[0023] A storage tank is fixed at the end of the connecting plate 13, and solder paste is stored in the storage tank. A plurality of nozzles are provided on the lower side wall of the feeding pipe 14, and the nozzles are arranged toward the center line of the feeding pipe 14. A diaphragm pump is connected between the output end of the storage tank and the plurality of nozzles.
[0024] A support 23 is fixedly connected to the upper side wall of the substrate 1, and an exhaust gas treatment tank 25 is fixedly connected to the upper end of the support 23. An air inlet and an air outlet 24 are respectively provided on the upper and lower side walls of the exhaust gas treatment tank 25, and an exhaust fan is fixed in the air inlet. A movable plate 27 is slidably arranged in the exhaust gas treatment tank 25, and a plurality of through grooves 28 are provided on the movable plate 27, and filter elements are fixedly arranged in the plurality of through grooves 28. An opening is provided on the exhaust gas treatment tank 25, and a rotating roller 26 driven by a motor three is provided in the opening. The rotating roller 26 contacts the upper side wall of the movable plate 27. During the welding process, the exhaust fan sucks the exhaust gas of the welding process into the exhaust gas treatment tank 25, and the exhaust gas is discharged from the air outlet 24 after being adsorbed by the filter element. In order to avoid the filter element being fully adsorbed, the motor three can be started to drive the rotating roller 26 to rotate, and the friction between the rotating roller 26 and the movable plate 27 drives the movable plate 27 to move, so that the next filter element is located between the air inlet and the air outlet 24, and the replacement of the filter element is completed.
[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims
1. An electronic circuit board welding positioning tool, comprising a substrate (1), characterized in that: A vertical rod (2) is fixed to the lower side wall of the base plate (1), a bottom plate (3) is fixed to the lower end of the vertical rod (2), a notch is provided on the base plate (1), a motor 1 is fixedly embedded on the inner wall of the notch, a support plate (20) is fixedly connected to the driving end of the motor 1, a clamping and positioning mechanism and a welding mechanism are provided on the base plate (1); the clamping and positioning mechanism comprises a slide groove symmetrically provided on the outer wall of the base plate (1), a trapezoidal plate 1 (4) is slidably provided in the slide groove, an electric push rod (5) is fixedly connected to the end of the base plate (1), and the electric push rod (5) is The driving end is fixedly connected to a U-shaped plate (7), the end of the U-shaped plate (7) is fixedly connected to a trapezoidal plate (6) in contact with the trapezoidal plate (4), and the inclined surface of the trapezoidal plate (4) is in contact with the inclined surface of the trapezoidal plate (6); a material storage box (15) is arranged on the upper side of the base plate (1), and the end of the base plate (1) is fixedly connected to symmetrically arranged fixed plates, and a conveying roller (21) driven by a motor (1) is installed between the two fixed plates, and a groove is opened on the support plate (20), and a conveying roller (22) driven by a motor (2) is installed in the groove.
2. The electronic circuit board welding positioning tool according to claim 1, characterized in that: Extension grooves are provided on the inner walls on both sides of the slide groove, and an extension plate (29) located in the extension groove is fixedly connected to the outer wall of the trapezoidal plate 1 (4), and a return spring (8) is fixedly connected between the extension plate (29) and the inner wall of the extension groove.
3. The electronic circuit board welding positioning tool according to claim 2, characterized in that: The welding mechanism comprises a second motor fixedly embedded in the lower side wall of a base plate (1), a driving end of the second motor being fixedly connected to a connecting piece (9), an outer wall of the connecting piece (9) being fixedly connected to an X-axis guide rail (10), the X-axis guide rail (10) comprising a first guide rail and a first slider mounted on the first guide rail, a Z-axis guide rail (11) being fixed to the upper side wall of the slider, the Z-axis guide rail (11) comprising a second guide rail and a second slider mounted on the second guide rail, a mounting tube (12) being fixed to the upper side wall of the second slider, an infrared radiation device being mounted in the mounting tube (12), a connecting plate (13) being fixedly connected to the outer wall of the mounting tube (12), an end of the connecting plate (13) being located on the upper side wall of the base plate (1) and being fixedly connected to a feed tube (14).
4. The electronic circuit board welding positioning tool according to claim 3, characterized in that: A storage tank is fixed at the end of the connecting plate (13), and solder paste is stored in the storage tank. A plurality of nozzles are provided on the lower side wall of the feed pipe (14), and the nozzles are arranged toward the center line of the feed pipe (14). A diaphragm pump is connected between the output end of the storage tank and the plurality of nozzles.
5. The electronic circuit board welding positioning tool according to claim 1, characterized in that: An oil cylinder 1 (16) is fixedly connected to the outer wall of the material storage box (15); a driving end of the oil cylinder 1 (16) is fixedly connected to a right-angle plate (17); an end of the right-angle plate (17) is fixedly connected to an extrusion plate (18) slidably inserted on the outer wall of the material storage box (15); an oil cylinder 2 (19) is fixedly connected to the upper side wall of the base plate (1); a driving end of the oil cylinder 2 (19) is fixedly connected to the lower side wall of the material storage box (15).
6. The electronic circuit board welding positioning tool according to claim 1, characterized in that: The upper side wall of the base plate (1) is fixedly connected to a support (23), the upper end of the support (23) is fixedly connected to an exhaust gas treatment tank (25), the upper and lower side walls of the exhaust gas treatment tank (25) are respectively provided with an air inlet and an air outlet (24), an exhaust fan is fixed in the air inlet, a movable plate (27) is slidably arranged in the exhaust gas treatment tank (25), a plurality of through slots (28) are arranged on the movable plate (27), and filter elements are fixedly arranged in the plurality of through slots (28).
7. The electronic circuit board welding positioning tool according to claim 6, characterized in that: The exhaust gas treatment tank (25) is provided with an opening, in which a rotating roller (26) driven by a third motor is arranged, and the rotating roller (26) is in contact with the upper side wall of the moving plate (27).