Selective welding equipment

Abstract

The utility model discloses selective welding equipment, and belongs to the technical field of circuit board processing. The device comprises a rack, a material rail, a driving assembly, a first lead screw and a mechanical arm. The driving assembly is used for driving the bearing table to move in the length direction of the material rail so that the circuit board can enter the rack, and then the mechanical arm can drive the spray head to move so that the spray head can send out tin liquid to different positions of the circuit board. The first motor drives the first lead screw to rotate so that the distance between the two material rails can be changed, the material rails can contain carriers with different widths, and the application range is wider.

Description

Technical Field

[0001] The present application relates to the technical field of circuit board processing, and in particular to a selective welding device. Background Art

[0002] Selective wave soldering, also known as selective soldering, is a PCB plug-in through-hole soldering technology. When using selective wave soldering for soldering, the soldering parameters of each soldering point can be accurately controlled, so it is often used for multi-layer PCB through-hole soldering with high soldering requirements and complex processes such as military electronics, aerospace and ship electronics, automotive electronics, digital cameras, printers, etc.

[0003] A turntable selective wave soldering device is disclosed in the patent with the announcement number CN213318189U. A plurality of jigs for fixing materials are arranged on the turntable. However, the size of the jigs is fixed, and thus only materials of a fixed size can be accommodated, which is inconvenient. Utility Model Content

[0004] The purpose of this application is to propose a selective welding device to address the above-mentioned problems existing in the prior art.

[0005] The present application can be implemented through the following technical solutions: A selective welding device, including a frame, a material rail, a driving assembly, a lead screw and a manipulator. The material rail is provided with two and both are arranged through the frame, and a limiting step is formed on the material rail along its own length direction, and the two limiting steps are slidably connected to a bearing platform, and the two bearing platforms are used to place the same carrier, and the carrier can contact the vertical side wall of the limiting step away from the ground, and a circuit board is clamped on the carrier, and a nozzle is provided under the material rail, and the nozzle is used to spray tin liquid to the circuit board; the driving assembly is used to drive the bearing platform to move along the length direction of the material rail so that the circuit board enters the frame; the lead screw is threadedly connected to the two material rails, and the lead screw is driven to rotate by a motor to change the spacing between the two material rails; the manipulator is used to drive the nozzle to move under the carrier, so that the nozzle can deliver tin liquid to different positions of the circuit board.

[0006] In the above technical solution, the driving assembly is used to drive the carrier to move along the length direction of the material rail so that the circuit board enters the rack, and then the manipulator can drive the nozzle to move so that the nozzle can deliver tin liquid to different positions of the circuit board. Motor 1 drives screw 1 to rotate to change the distance between the two material rails, so that the material rail can accommodate carriers with different widths, and the application range is wider.

[0007] Furthermore, it also includes a laser distance sensor, which is used to detect the distance between the vertical side walls of two limit steps away from the ground. The motor is electrically connected to a controller, and the controller is electrically connected to the laser distance sensor.

[0008] In the above technical solution, by providing a laser distance measuring sensor and a controller, it is convenient for workers to accurately adjust the distance between the two material rails.

[0009] Furthermore, both ends of the carrying platform are slidably connected with limit blocks for limiting the carrier, and the limit blocks are fixed to the carrying platform through a fixing assembly so that the distance between the two limit blocks can be adapted to carriers of different lengths.

[0010] Furthermore, the fixing component includes a slide groove opened on the supporting platform and with a depth direction consistent with the length direction of the material rail, an adjustment groove opened in the supporting platform and connected to the slide groove, the depth direction of the adjustment groove is perpendicular to the slide groove, the adjustment groove is slidably connected with a spring block, the spring block is forced to move away from the bottom surface of the adjustment groove by a spring, the limit block is provided with a plurality of slots, the limit block is slidably connected to the slide groove, and the spring block can be engaged with a slot to change the position of the limit block relative to the bottom surface of the accommodating groove.

[0011] In the above technical solution, when the position of the limit block needs to be adjusted, the limit block is pulled along the length direction of the slide slot so that the spring block can be engaged with different slots. At this time, the limit block can be fixed relative to the support platform.

[0012] Furthermore, the frame is provided with an observation port, and a sliding door slidably connected to the frame is provided at the observation port.

[0013] In the above technical solution, an observation port is provided to facilitate workers to observe the working conditions of various components in the frame, and workers can perform maintenance and other operations on various components in the frame through the sliding door, which is more convenient.

[0014] Furthermore, a surface of the lead screw is coated with an anti-rust layer.

[0015] In the above technical solution, by coating an anti-rust layer on the surface of the lead screw 1, the service life of the lead screw 1 can be extended.

[0016] Furthermore, an inspection camera is provided in the frame, and the inspection camera is used to inspect the welding quality of the circuit board.

[0017] In the above technical solution, the inspection camera can inspect the welding quality of the circuit board, which is more convenient without workers spending time to conduct welding quality inspection.

[0018] Furthermore, a camera is provided in the frame and beside the nozzle, and the camera is electrically connected to a display.

[0019] In the above technical solution, the camera can transmit the welding process of the nozzle to the display, so that when problems occur in the welding process, workers can discover and repair them in time.

[0020] In summary, the present application has the following technical effects: the driving assembly is used to drive the carrier to move along the length direction of the material rail so that the circuit board enters the rack, and then the manipulator can drive the nozzle to move so that the nozzle can deliver tin liquid to different positions of the circuit board. The motor drives the lead screw to rotate to change the spacing between the two material rails, so that the material rail can accommodate carriers with different widths, and the application range is wider. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of this application;

[0022] Figure 2 It is a schematic diagram of the position of the manipulator in this application;

[0023] Figure 3 It is a schematic diagram of the structure of the limit block and the bearing platform in this application;

[0024] Figure 4 This is a schematic diagram of the locations of the bullet blocks in this issue.

[0025] Description of reference numerals:

[0026] 1. Frame; 11. Feed port; 12. Discharge port; 13. Observation port; 2. Material rail; 21. Limiting step; 3. Carrier; 4. Carrier; 5. Nozzle; 6. Drive assembly; 61. Screw 2; 62. Motor 2; 7. Screw 1; 8. Motor 1; 9. Manipulator; 91. X-axis assembly; 911. X-axis screw; 912. X-axis motor; 913. X-axis fixing frame; 92. Y-axis assembly; 921. Y-axis screw; 92 2. Y-axis motor; 93. Electric push rod; 10. Laser ranging sensor; 14. Controller; 15. Limit block; 151. Insert block; 152. Stop block; 16. Fixing assembly; 161. Slide slot; 162. Adjusting slot; 163. Spring block; 164. Spring; 165. Slot; 17. Sliding door; 18. Detection camera; 19. Camera; 20. Display; 22. Mounting bracket; 23. Fixing bracket; 24. Laser reflector. DETAILED DESCRIPTION

[0027] Please refer to the attached drawings in the instruction manual. Figure 1One embodiment of the present application provides a selective soldering device, including a frame 1, a nozzle 5 is provided inside the frame 1, and the nozzle 5 can be connected to a tin pump through a silicone tube, and the tin pump can be placed in a barrel. The frame 1 is provided with a feed port 11 and a discharge port 12, and the feed port 11 and the discharge port 12 are penetrated by the same material rail 2, and the material rail 2 is provided with two and each is formed with a limit step 21, and the two material rails 2 are slidably connected with a bearing platform 3. The two bearing platforms 3 are used to place the same carrier 4, and the circuit board is clamped in the carrier 4, and the thickness side wall of the carrier 4 can contact the vertical side wall of the limit step 21 away from the ground. The bearing platform 3 is driven by a driving component 6 to move linearly along the limit step 21, so that the bearing platform 3 can drive the carrier 4 and the circuit board into the frame 1, and the nozzle 5 is located below the bearing platform 3. A manipulator 9 is provided in the frame 1, and the manipulator 9 is used to drive the nozzle 5 to move below the carrier 4, so that the nozzle 5 can deliver tin liquid to different positions on the circuit board.

[0028] Please refer to the attached drawings in the instruction manual. Figure 2 For ease of explanation, the length direction of the distance between the two limit guide rails is defined as the x-axis, the length direction of the two limit guide rails is defined as the y-axis, the height direction of the frame 1 is defined as the z-axis, and the manipulator 9 includes an x-axis component 91, a y-axis component 92, and an electric push rod 93 for driving the nozzle 5 to move linearly along the z-axis direction. The y-axis assembly 92 includes a y-axis screw 921 rotatably connected to the frame 1, the length direction of the y-axis screw 921 is consistent with the length direction of the material rail 2, and the y-axis screw 921 is driven to rotate by a y-axis motor 922. The x-axis assembly 91 includes an x-axis fixed frame 913 threadedly connected to the y-axis screw 921, the length direction of the x-axis fixed frame 913 is consistent with the direction of the x-axis, the x-axis fixed frame 913 is rotatably connected to an x-axis screw 911, the length direction of the x-axis screw 911 is consistent with the length direction of the x-axis, the x-axis screw 911 is threadedly connected to a mounting frame 22, an electric push rod 93 is installed on the mounting frame 22, and the nozzle 5 is fixed to the telescopic end of the electric push rod 93 through a fixed frame 23, so that the electric push rod 93 can drive the nozzle 5 to move up or down in a straight line along the z-axis direction.

[0029] Please refer to the attached drawings in the instruction manual. Figure 1The driving assembly 6 includes a lead screw 2 61 which is rotatably connected to the material rail 2 and threadedly connected to the carrier 3. The length direction of the lead screw 2 61 is consistent with the length direction of the material rail 2. The lead screw 2 61 is driven to rotate by a motor 2 62 so that the carrier 3 can drive the carrier 4 to enter the frame 1. The two material rails 2 are threadedly connected to the same lead screw 1 7 at both ends in the length direction. The lead screw 1 7 is rotatably connected to the frame 1. The lead screw 1 7 is driven to rotate by a motor 1 8, wherein the threads at both ends in the length direction of the lead screw 1 7 have opposite rotation directions. When the motor 1 8 drives the lead screw 1 7 to rotate forward or reverse, the distance between the two material rails 2 can be expanded or reduced. This allows the two material rails 2 to accommodate carriers 4 of different widths, and thus circuit boards of different widths, and has a wider range of applications. The surfaces of the lead screw 1 7 and the lead screw 2 61 are coated with an anti-rust layer to extend the service life of the lead screw 1 7 and the lead screw 2 61. Among them, a laser ranging sensor 10 is provided on the material rail 2, and a laser reflecting plate 24 is provided on the material rail 2 located on the opposite side of the laser ranging sensor 10. The vertical side wall of the laser reflecting plate 24 is flush with the vertical side wall of the limit step 21 away from the ground. The laser ranging sensor 10 is used to detect the distance between the vertical side walls of the two limit steps 21 away from the ground, and the laser ranging sensor 10 is electrically connected to a controller 14, and the controller 14 is electrically connected to the motor 8. When the spacing between the two material rails 2 needs to be adjusted to a specified spacing, the specified length can be pre-set, and then the controller 14 can control the motor to rotate according to the set distance until the spacing between the vertical side walls of the two material rails 2 away from the ground is the specified length.

[0030] Please refer to the attached drawings in the instruction manual. Figure 3 and Figure 4 Both ends of each supporting platform 3 in the length direction are slidably connected with a limit block 15 that can limit the carrier 4. The limit block 15 includes an insert block 151 and a stop block 152 integrally formed with the insert block 151. The height of the stop block 152 is greater than the height of the supporting platform 3. The stop block 152 is used to limit the carrier 4. The length direction of the insert block 151 is consistent with the length direction of the supporting platform 3. The insert block 151 is slidably connected to the supporting platform 3. The insert block 151 is fixed to the supporting platform 3 through a fixing component 16. By setting the limit block 15, the supporting platform 3 can limit the carriers 4 of different lengths, and the application range is wider.

[0031] Please refer to the attached drawings in the instruction manual. Figure 3 and Figure 4The fixing assembly 16 includes a slide groove 161 which is opened on the supporting platform 3 and the depth direction is consistent with the length direction of the material rail 2. An adjusting groove 162 which is connected to the slide groove 161 is also opened in the supporting platform 3. The depth direction of the adjusting groove 162 is perpendicular to the slide groove 161. The adjusting groove 162 is slidably connected with a spring block 163. The spring block 163 forces itself away from the inner bottom surface of the adjusting groove 162 through a spring 164. The insert block 151 is provided with nine slots 165 along its length direction. The slots 165 are hemispherical, and the spring block 163 is formed with a hemispherical surface. The insert block 151 is slidably connected with the slide groove 161. The spring block 163 can be engaged with a slot 165 to change the position of the limit block 15 relative to the bottom surface of the accommodating groove.

[0032] Please refer to the attached drawings in the instruction manual. Figure 1 and Figure 2 The frame 1 is provided with an observation port 13 that can communicate with the inside and outside of the frame 1. A sliding door 17 is provided at the observation port 13. The sliding door 17 is slidably connected to the frame 1. The sliding door 17 is made of a transparent material. The sliding door 17 is provided to facilitate maintenance of the inside of the frame 1. The discharge port 12 of the frame 1 is provided with a detection camera 18. The detection camera 18 is a CCD detection camera 18. The detection camera 18 is used to detect the welding quality of the circuit board. A camera 19 is fixedly installed on the fixing frame 23. The camera 19 can capture the nozzle 5. The camera 19 is electrically connected to a display 20. The worker can monitor the welding process of the nozzle 5 through the display 20 so that the worker can find out the equipment failure in time.

[0033] The working principle of this embodiment is as follows: the carrier 4 with the circuit board is placed on the supporting platform 3, so that the two blocks 152 in the length direction of the supporting platform 3 contact the two ends of the length direction of the carrier 4 in a one-to-one correspondence, and then the motor 2 62 drives the screw 2 61 to rotate through the supporting platform 3 to drive the carrier 4 into the frame 1. At this time, the robot 9 can drive the nozzle 5 to move under the circuit board to deliver tin liquid to different areas of the circuit board.

[0034] 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. A selective welding device, characterized in that: include: Rack (1); A material rail (2), wherein two material rails (2) are provided and both are penetrated through the frame (1), a limiting step (21) is formed on the material rail (2) along its length direction, the two limiting steps (21) are both slidably connected to a bearing platform (3), the two bearing platforms (3) are used to place the same carrier (4), the carrier (4) can contact the vertical side wall of the limiting step (21) away from the ground, a circuit board is clamped on the carrier (4), a nozzle (5) is provided below the material rail (2), and the nozzle (5) is used to spray tin liquid onto the circuit board; A driving assembly (6), the driving assembly (6) being used to drive the carrying platform (3) to move along the length direction of the material rail (2) so that the circuit board enters the frame (1); A lead screw (7), wherein the lead screw (7) is threadedly connected to the two material rails (2), and the lead screw (7) is driven to rotate by a motor (8) so that the distance between the two material rails (2) changes; A robot (9) is used to drive the nozzle (5) to move below the carrier so that the nozzle (5) can deliver molten tin to different positions of the circuit board.

2. A selective welding device according to claim 1, characterized in that: It also includes a laser distance sensor (10), which is used to detect the distance between the vertical side walls of the two limit steps (21) away from the ground. The motor (8) is electrically connected to a controller (14), and the controller (14) is electrically connected to the laser distance sensor (10).

3. A selective welding device according to claim 1, characterized in that: Both ends of the support platform (3) are slidably connected with limit blocks (15) for limiting the position of the carrier (4); the limit blocks (15) are fixed to the support platform (3) via a fixing assembly (16) so that the distance between the two limit blocks (15) can be adapted to carriers (4) of different lengths.

4. A selective welding device according to claim 3, characterized in that: The fixing assembly (16) comprises a slide groove (161) which is opened on the supporting platform (3) and has a depth direction consistent with the length direction of the material rail (2), and an adjusting groove (162) which is opened in the supporting platform (3) and is connected to the slide groove (161). The depth direction of the adjusting groove (162) is perpendicular to the slide groove (161). The adjusting groove (162) is slidably connected with a spring block (163). The spring block (163) is forced to move away from the inner bottom surface of the adjusting groove (162) by a spring (164). The limit block (15) is provided with a plurality of slots (165). The limit block (15) is slidably connected with the slide groove (161). The spring block (163) can be engaged with a slot (165) so that the position of the limit block (15) relative to the bottom surface of the accommodating groove changes.

5. A selective welding device according to claim 1, characterized in that: The frame (1) is provided with an observation port (13), and a sliding door (17) slidably connected to the frame (1) is provided at the observation port (13).

6. A selective welding device according to claim 1, characterized in that: The surface of the lead screw 1 (7) is coated with an anti-rust layer.

7. A selective welding device according to claim 1, characterized in that: An inspection camera (18) is arranged inside the frame (1), and the inspection camera (18) is used to inspect the welding quality of the circuit board.

8. The selective welding equipment according to claim 1, characterized in that: A camera (19) is provided inside the frame (1) and beside the nozzle (5), and the camera (19) is electrically connected to a display (20).

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