Automatic spot welding equipment for circuit board

Abstract

The automatic spot welding equipment for the circuit board comprises a workbench arranged on the ground, a portal frame is installed at the end, away from the ground, of the workbench, the portal frame is vertically installed on the workbench, a welding gun is installed on the portal frame, and a positioning block is installed on the side, facing the portal frame, of the workbench; the welding gun is installed above the positioning block, an embedding groove is formed in the side, away from the workbench, of the positioning block, a ring body is arranged at the end, away from the workbench, of the positioning block, the ring body is installed above the positioning block, the ring body covers the side, away from the workbench, of the positioning block, a welding hole is formed in the ring body, and the welding hole corresponds to the embedding groove. And the ring body is installed above the positioning block to clamp and fix the circuit board needing to be welded. The circuit board welding device has the effect of reducing deviation generated during welding of the circuit board.

Description

Technical Field

[0001] The present application relates to the technical field of circuit board welding equipment, and in particular to an automatic spot welding equipment for circuit boards. Background Art

[0002] A circuit board can be called a printed circuit board or a printed circuit board. The circuit board is mainly composed of pads, vias, mounting holes, wires, components, connectors, fillings, electrical boundaries, etc. The existing components and connectors are fixedly connected to the pads by welding. When welding components and connectors on a circuit board, the circuit board needs to be placed on a spot welding platform for welding. Since components of different sizes are plugged into the surface of the circuit board, the lower surface of the circuit board is not very flat. Therefore, when the circuit board is placed on the spot welding platform for welding, it is easy to shake and welding offset may occur.

[0003] The authorization announcement number CN216829057U discloses an automatic welding tool for PCB boards, including a workbench, pillars are installed at the four corners of the lower end of the workbench, a hollow hole is arranged in the middle of the workbench, a groove is arranged inside the hollow hole, a turntable is installed inside the hollow hole, a limit ring is arranged at the side end of the turntable, the limit ring is movably engaged with the groove, the turntable is movably connected with the hollow hole through the limit ring and the groove, a driving machine is installed at the lower end of the turntable, a base is installed at the lower end of the driving machine, and limit blocks are installed at the four corners of the upper end of the turntable, the limit blocks are fixedly connected to the turntable, and limit grooves are arranged inside the upper ends of the limit blocks.

[0004] With respect to the above-mentioned related technologies, limit blocks are installed at the four corners of the upper end of the turntable and limit grooves are opened inside the limit blocks. The circuit boards are placed in the limit grooves. When the circuit boards are welded, due to the lack of positioning of the circuit boards, when the circuit boards are subjected to external force, it is easy to cause the circuit boards to shake, resulting in welding deviation, resulting in poor welding of the circuit boards. Utility Model Content

[0005] In order to reduce the probability of shaking during circuit board welding, the present application provides an automatic spot welding device for circuit boards.

[0006] The present application provides an automatic spot welding device for a circuit board using the following technical solution:

[0007] An automatic spot welding device for circuit boards comprises a workbench arranged on the ground, a gantry is installed at one end of the workbench facing away from the ground, the gantry is vertically installed on the workbench, a welding gun is installed on the gantry, a positioning block is installed on the side of the workbench facing the gantry, the welding gun is installed above the positioning block, a groove is provided on the side of the positioning block facing away from the workbench, a ring body is provided at one end of the positioning block facing away from the workbench, the ring body is installed above the positioning block, the ring body covers the side of the positioning block facing away from the workbench, and the ring body is provided with welding holes.

[0008] By adopting the above technical solution, the circuit board is installed in the embedding groove opened in the positioning block, and the ring body is installed above the positioning block to clamp and fix the circuit board, thereby reducing the welding deviation caused by the shaking of the circuit board when the circuit board is subjected to external force during welding, thereby improving the welding quality of the circuit board.

[0009] Preferably, a driving member is connected to the side of the ring body facing the positioning block, and the driving member is installed on the side wall of the positioning block in the length direction at one end away from the ring body, and the driving member is used to drive the ring body to slide toward or away from the positioning block.

[0010] By adopting the above technical solution, when welding is completed, the clamping and fixing of the circuit board by the ring body disappears, and the connection between the ring body and the circuit board prevents the ring body from falling on the workbench when sliding away from the positioning block, thereby reducing the probability of the ring body being lost after falling off the positioning block.

[0011] Preferably, a plurality of positioning posts are arranged on the side of the positioning block facing away from the workbench, the positioning posts are fixedly mounted on the positioning block, the ring body is provided with a plurality of positioning holes corresponding to the positioning posts, and the positioning posts are inserted into the positioning holes.

[0012] By adopting the above technical solution, the positioning column is installed on the positioning block to provide a limit for the installation of the circuit board. At the same time, the positioning column is inserted into the positioning hole to provide a guide for the ring body to slide away from or close to the positioning block.

[0013] Preferably, a plurality of protrusions are provided on the side of the ring body facing the positioning block, and the plurality of protrusions are fixedly arranged on the side of the ring body facing the positioning block, and the plurality of protrusions are evenly arranged along the circumference of the ring body.

[0014] By adopting the above technical solution, when the ring body slides toward the positioning block, the end of the protrusion facing away from the ring body abuts against the circuit board installed in the positioning block, making the installation of the circuit board more stable and reducing the shaking of the circuit board during welding.

[0015] Preferably, the end of the protrusion facing away from the ring body is connected to a flexible layer, and the flexible layer is fixedly arranged on the end of the protrusion facing away from the ring body.

[0016] By adopting the above technical solution, when the ring body slides toward the positioning block, the flexible layer abuts against the circuit board installed on the positioning block. As the ring body slides toward the positioning block, the flexible layer deforms, reducing the damage to the circuit board surface caused by the protrusion directly contacting the circuit board.

[0017] Preferably, the positioning block is provided with a notch toward one end of the ring body, and the notch is connected to the embedding groove.

[0018] By adopting the above technical solution, since the circuit board abuts the positioning block during welding, it is difficult to remove the circuit board because there is no gripping point after welding is completed. The setting of the notch allows the staff to grip the circuit board from the notch after welding is completed and take the circuit board out of the positioning block, making it quick to take the circuit board out of the positioning block and reducing the time spent on taking it out.

[0019] Preferably, the positioning block is provided with a buffer member on the circumference of the inner wall of the embedding groove, and the buffer member is fixedly installed in the embedding groove.

[0020] By adopting the above technical solution, a buffer is installed on the inner wall of the groove so that the electronic components connected to the circuit board abut against the buffer. The buffer deforms to cover the electronic components, thereby reducing the damage caused by direct contact between the electronic components and the groove and the probability of the circuit board shaking in the groove.

[0021] Preferably, a slide rail is provided between the workbench and the positioning block, the slide rail is horizontally arranged along the width direction of the workbench, the positioning block is slidably installed on the slide rail, the slide rail is fixedly installed on the workbench at one end away from the positioning block, and the positioning block is connected to a power piece, which drives the positioning block to slide along the length direction of the slide rail.

[0022] By adopting the above technical solution, the surface temperature of the welding gun installed above the positioning block is very high due to the reason of welding the circuit board. When the circuit board welded on the positioning block is replaced, there is a risk of burns if the staff disassembles and installs the circuit board directly under the welding gun. The slide rail is set to allow the positioning block to slide along the slide rail, and the positioning block is slid to a position away from the bottom of the welding gun for installation, thereby reducing the damage caused by installing the circuit board to be welded.

[0023] Preferably, the positioning block is detachably mounted on the slide rail.

[0024] By adopting the above technical solution, the positioning block can be detachably installed on the slide rail, so that the staff can select the positioning block matching the size of the circuit board according to the size of the circuit board to be welded and install it on the slide rail, thereby reducing the material waste caused by the need to produce spot welding equipment of different sizes for circuit boards of different sizes and improving the applicability of the welding equipment.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. The circuit board is installed in the groove of the positioning block, and the ring body is installed above the positioning block to clamp and fix the circuit board, thereby reducing the welding deviation caused by the shaking of the circuit board when the circuit board is subjected to external force during welding, and improving the welding quality of the circuit board;

[0027] 2. When the ring body slides toward the positioning block, the end of the protrusion facing away from the ring body abuts against the circuit board installed in the positioning block, making the installation of the circuit board more stable and reducing the shaking of the circuit board during welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the automatic spot welding equipment for circuit boards.

[0029] Figure 2 It is a schematic diagram of the structure of the ring.

[0030] Figure 3 It is a schematic diagram of the cross-sectional structure of the ring body and the positioning block.

[0031] Explanation of the accompanying reference numerals: 0, circuit board; 1, workbench; 2, gantry; 3, welding gun; 4, positioning block; 5, embedding groove; 6, ring body; 7, welding hole; 8, driving member; 9, positioning column; 10, positioning hole; 11, protrusion; 12, flexible layer; 13, notch; 14, buffer member; 15, slide rail; 16, power member; 17, frame; 18, three-axis electric slide; 19, exhaust pipe; 20, fan; 21, mounting hole. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-3 This application is described in further detail.

[0033] The embodiment of the present application discloses an automatic spot welding device for a circuit board.

[0034] Reference Figure 1, an automatic spot welding device for a circuit board comprises a frame 17 vertically mounted on the ground, a workbench 1 is connected to one end of the frame 17 away from the ground, the workbench 1 is fixedly mounted on the other end of the frame 17 away from the ground, the frame 17 and the workbench 1 are used to carry the installation of other structures; a gantry 2 is arranged above the workbench 1, both ends of the gantry 2 are respectively fixedly mounted on both sides of the length direction of the workbench 1, a welding gun 3 is mounted on the gantry 2, a three-axis electric slide 18 is installed between the welding gun 3 and the gantry 2, the three-axis electric slide 18 is a common driving mechanism, which is a prior art, and no unnecessary details are given in this embodiment, the three-axis electric slide 18 is fixedly mounted on the gantry 2, the welding gun 3 is connected to the three-axis electric slide 18, and the three-axis electric slide 18 is used to drive the welding gun 3 to slide along the length direction of the workbench 1, the width direction of the workbench 1 and the height direction of the workbench 1; A plurality of slide rails 15 are installed on the side of the workbench 1 facing the gantry 2. In this example, two slide rails 15 are provided. The two slide rails 15 are fixedly installed on the workbench 1 in parallel. The slide rails 15 are horizontally arranged along the width direction of the workbench 1. A positioning block 4 is installed on the slide rail 15. The positioning block 4 slides along the length direction of the slide rail 15, and the positioning block 4 slides to the bottom of the welding gun 3 by sliding. The positioning block 4 is provided with an embedding groove 5. A ring body 6 is installed on the side of the positioning block 4 away from the slide rail 15. The ring body 6 is installed above the positioning block 4. The ring body 6 slides toward or away from the positioning block 4. The ring body 6 is provided with welding holes 7 corresponding to the embedding groove 5. The circuit board 0 is placed on the positioning block 4, and the electronic components connected to the circuit board 0 are installed in the embedding groove 5. The circuit board 0 is clamped and fixed by the ring body 6 that slides and is pressed on the circuit board 0. The welding gun 3 welds the circuit board 0 through the welding holes 7.

[0035] Reference Figure 1 and Figure 2Both ends of the ring body 6 in the length direction are connected with driving members 8, and the driving member 8 is an electric push rod. A mounting hole 21 is opened on the side of the ring body 6 facing the positioning block 4, and the electric push rod is fixedly installed in the mounting hole 21. The driving member 8 is fixedly installed on both sides of the length direction of the positioning block 4 away from the side of the ring body 6. The driving member 8 drives the ring body 6 to slide toward or away from the positioning block 4; a plurality of protrusions 11 are fixedly connected to the side of the ring body 6 facing the positioning block 4, and the protrusions 11 are fixedly installed on the ring body 6. When the ring body 6 slides toward the positioning block 4, the protrusions 11 abut against the circuit board 0 to fix the circuit board 0. When the ring body 6 slides toward and away from the positioning block 4, the protrusions 11 move away from the circuit board 0 with the ring body 6; a flexible layer 12 is provided on the end of the protrusion 11 away from the ring body 6, and the flexible layer 12 is Made of rubber, the flexible layer 12 is fixedly mounted on the end of the protrusion 11 away from the ring body 6. When the driving member 8 drives the ring body 6 to slide toward the positioning block 4, the protrusion 11 on the ring body 6 drives the flexible layer 12 to abut against the area of ​​the circuit board 0 where no electronic components are installed in the circumference of the circuit board 0, thereby fixing the circuit board 0 installed on the positioning block 4. When welding is completed, the driving member 8 drives the ring body 6 to slide away from the positioning block 4, and the fixing effect of the protrusion 11 on the circuit board 0 disappears. At this time, the circuit board 0 can be removed from the positioning block 4; the flexible layer 12 changes the direct contact between the protrusion 11 and the circuit board 0 into the contact between the flexible layer 12 and the circuit board 0. The flexible layer 12 is deformed after abutting against the circuit board 0, thereby reducing the damage to the circuit board 0 during the fixing process when the circuit board 0 is fixed.

[0036] Reference Figure 1 and Figure 2 A plurality of positioning posts 9 are fixedly installed on one side of the positioning block 4 facing the ring body 6. The positioning posts 9 are fixedly installed on two sides of the positioning block 4 that are perpendicular to each other. When the circuit board 0 is installed, the two sides of the circuit board 0 abut against the side of the positioning posts 9 facing the embedding groove 5, and the positioning posts 9 limit the installation of the circuit board 0. Positioning holes 10 corresponding to the positioning posts 9 are opened on the ring body 6. The positioning posts 9 are inserted into the positioning holes 10. When the driving member 8 drives the ring body 6 to slide away from or close to the positioning block 4, the positioning posts 9 slide in the positioning holes 10 to provide guidance for the sliding of the ring body 6, thereby reducing the displacement deviation caused by the sliding of the ring body 6.

[0037] Reference Figure 1 and Figure 3 A buffer 14 is provided on the inner wall of the embedding groove 5. The buffer 14 is a sponge member. The electronic components installed on the circuit board 0 squeeze the sponge member, and the sponge member is deformed to cover the electronic components, thereby reducing the slippage of the positioning block 4 and causing the electronic components to shake in the embedding groove 5, resulting in position deviation after welding; a notch 13 is opened on the positioning block 4, and the notch 13 is connected to the embedding groove 5. The notch 13 allows the welded circuit board 0 to be quickly removed from the positioning block 4 through the notch 13.

[0038] Reference Figure 1 and Figure 3 A slide groove is provided on the side of the slide rail 15 away from the workbench 1, and the slide groove is horizontally arranged along the length direction of the slide rail 15. The positioning block 4 is fixedly connected to a mounting block toward the side of the slide rail 15, and a power piece 16 is connected to the end of the mounting block away from the slide rail 15. The power piece 16 is installed on the slide rail 15 and extends into the slide groove. The mounting block is inserted on the power piece 16, and bolts are installed between the power piece 16 and the mounting block. The bolts tighten the connection between the power piece 16 and the mounting block and make the positioning block 4 detachable and mounted on the power piece 16 through the bolts; the power piece 16 is a rodless cylinder, and the power piece 16 slides along the length direction of the slide groove to drive the positioning block 4 to slide along the length direction of the slide rail 15. When the circuit board 0 needs to be welded, the power piece 16 drives the circuit board 0 to the welding position. When the welding is completed, the power piece 16 drives the positioning block 4 away from the welding position and returns to the initial position.

[0039] Reference Figure 1 An exhaust pipe 19 is installed on the gantry 2. The exhaust pipe 19 is a hose. An exhaust port is opened in the exhaust pipe 19. The exhaust port is aimed at the welding gun 3. The exhaust pipe 19 is connected to a fan 20 at one end away from the welding gun 3. When the fan 20 is started, the gas generated by the welding gun 3 welding the circuit board 0 is extracted through the exhaust pipe 19, thereby reducing the harm caused to the human body by the gas generated by welding.

[0040] The implementation principle of an automatic spot welding device for circuit boards in an embodiment of the present application is as follows: before welding the circuit board 0, determine the size and style of the circuit board 0 to be welded, select a suitable positioning block 4 according to the size and style of the circuit board 0, then fix the gantry 2 on the workbench 1, install a three-axis electric slide 18 on the gantry 2, and install the welding gun 3 on the three-axis electric slide 18, install the exhaust pipe 19 and align the exhaust port of the exhaust pipe 19 with the welding gun 3; install the slide rail 15 on the workbench 1, install the power part 16 on the slide rail 15, install the positioning block 4 on the power part 16 and install bolts for reinforcement; fix the driving part 8 on both sides of the positioning block 4 in the length direction, and make the positioning column 9 installed on the positioning block 4 pass through the positioning hole 10; install the circuit board 0 on the positioning block 4 and make the two sides of the circuit board 0 abut against the positioning column 9, the electronic components connected to the circuit board 0 are installed in the embedded groove 5, and start the driving part 8 to drive the ring body 6 toward The positioning block 4 slides, and the flexible layer 12 connected to the ring body 6 abuts against the circuit board 0 to fix the circuit board 0. The electronic components connected to the circuit board 0 are covered and fixed by the buffer member 14 in the embedded groove 5. The power member 16 is started to move the positioning block 4 to the welding position. The welding gun 3 is driven by the three-axis electric slide 18 to move to the welding position to weld the circuit board 0; when the welding of the circuit board 0 is completed, the three-axis electric slide 18 drives the welding gun 3 to slide to the welding position corresponding to the other slide rail 15 to weld the circuit board 0 installed on the positioning block 4. The welded circuit board 0 slides away from the welding position under the action of the power member 16. The driving member 8 drives the ring body 6 to slide away from the positioning block 4, and the welded circuit board 0 is taken out from the notch 13, and the unwelded circuit board 0 is installed on the positioning block 4. When the welding of another circuit board 0 is completed, it moves to the welding position to weld the circuit board 0, and the above work is repeated until the welding of all the circuit boards 0 to be welded is completed.

[0041] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An automatic spot welding device for a circuit board, comprising a workbench (1) arranged on the ground, a gantry (2) being installed at one end of the workbench (1) facing away from the ground, the gantry (2) being vertically installed on the workbench (1), a welding gun (3) being installed on the gantry (2), a positioning block (4) being installed on the side of the workbench (1) facing the gantry (2), the welding gun (3) being installed above the positioning block (4), and a groove (5) being provided on the side of the positioning block (4) facing away from the workbench (1), characterized in that: A ring body (6) is installed at one end of the positioning block (4) away from the workbench (1); the ring body (6) is installed above the positioning block (4); the ring body (6) covers the side of the positioning block (4) away from the workbench (1); and the ring body (6) is provided with a welding hole (7).

2. The automatic spot welding equipment for circuit boards according to claim 1, characterized in that: A driving member (8) is connected to the side of the ring body (6) facing the positioning block (4); an end of the driving member (8) facing away from the ring body (6) is mounted on a side wall of the positioning block (4) in the length direction; the driving member (8) is used to drive the ring body (6) to slide towards or away from the positioning block (4).

3. The automatic spot welding equipment for circuit boards according to claim 2, characterized in that: A plurality of positioning columns (9) are arranged on the side of the positioning block (4) facing away from the workbench (1), the positioning columns (9) are fixedly mounted on the positioning block (4), the ring body (6) is provided with a plurality of positioning holes (10) corresponding to the positioning columns (9), and the positioning columns (9) are inserted into the positioning holes (10).

4. The automatic spot welding equipment for circuit boards according to claim 3 is characterized in that: A plurality of protrusions (11) are arranged on the side of the ring body (6) facing the positioning block (4); the plurality of protrusions (11) are fixedly arranged on the side of the ring body (6) facing the positioning block (4); and the plurality of protrusions (11) are evenly arranged along the circumference of the ring body (6).

5. The automatic spot welding equipment for circuit boards according to claim 4, characterized in that: The end of the protrusion (11) facing away from the ring body (6) is connected to a flexible layer (12), and the flexible layer (12) is fixedly arranged on the end of the protrusion (11) facing away from the ring body (6).

6. The automatic spot welding equipment for circuit boards according to claim 5, characterized in that: The positioning block (4) is provided with a notch (13) at one end facing the ring body (6), and the notch (13) is connected to the embedding groove (5).

7. The automatic spot welding equipment for circuit boards according to claim 6, characterized in that: The positioning block (4) is provided with a buffer member (14) on the inner wall of the embedding groove (5), and the buffer member (14) is fixedly arranged in the embedding groove (5).

8. The automatic spot welding equipment for circuit boards according to claim 7, characterized in that: A slide rail (15) is provided between the workbench (1) and the positioning block (4); the slide rail (15) is horizontally arranged along the width direction of the workbench (1); the positioning block (4) is slidably mounted on the slide rail (15); one end of the slide rail (15) facing away from the positioning block (4) is fixedly mounted on the workbench (1); the positioning block (4) is connected to a power member (16); the power member (16) drives the positioning block (4) to slide along the length direction of the slide rail (15).

9. The automatic spot welding equipment for circuit boards according to claim 8, characterized in that: The positioning block (4) is detachably mounted on the slide rail (15).

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