Tin stripping machine for circuit board processing

Abstract

The utility model discloses a tin stripping machine for circuit board processing, and particularly relates to the technical field of circuit board processing, which comprises a bottom plate, a tin stripping box is arranged at the top of the bottom plate, an L-shaped support is arranged on one side of the tin stripping box, two electric push rods are arranged at the top of the L-shaped support, and a box cover is jointly mounted at the output ends of the two electric push rods. A plurality of clamping structures are arranged at the bottom of the box cover, a moving structure is arranged at the joint of the L-shaped support and the bottom plate, each clamping structure comprises a clamping block, the clamping blocks are fixedly installed at the bottom of the box cover, rectangular clamping grooves are formed in the surfaces of the clamping blocks, and moving cavities are formed in the clamping blocks. According to the utility model, an operator can separately clamp a plurality of circuit boards conveniently, so that tin stripping operation can be carried out on the plurality of circuit boards at the same time, the processing efficiency of the circuit boards is improved, tin slag on the circuit boards can be prevented from falling into tin stripping liquid to cause pollution, and the tin stripping effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of circuit board processing technology, and more specifically, to a desoldering machine for circuit board processing. Background Technology

[0002] Circuit boards, also known as PCBs, are an indispensable component of electronic devices. As the support for electronic components and the carrier for electrical connections, circuit boards require a layer of tin plating on the copper lines during the manufacturing process to prevent damage to the circuit. After the circuit is formed, this tin layer needs to be removed.

[0003] Current methods for removing solder generally involve simply placing the circuit board in a solder stripping solution tank. However, common solder stripping machines require manual handling of the circuit boards, which not only increases labor costs but also leaves the boards wet after solder stripping, necessitating natural air drying. This significantly impacts subsequent processing. Furthermore, solder stripping residue remains in the tank, greatly hindering the recycling of the solder stripping solution. Prolonged manual handling of circuit boards can also cause injury to personnel and inconvenience users.

[0004] For example, Chinese patent CN213602897U discloses a desoldering machine for circuit board processing. This structure can easily clamp and fix the circuit board, avoiding the need for manual placement of the circuit board into the desoldering box, greatly reducing labor costs. It also facilitates the filtration of desoldering dross generated during desoldering, allowing the desoldering solution to be recycled and avoiding resource waste. At the same time, it facilitates the drying of the desoldered circuit board, bringing great convenience to the user.

[0005] However, in actual use, this structure can only perform the desoldering operation on a single circuit board and cannot process multiple circuit boards at the same time, which has a certain impact on the desoldering efficiency of the circuit boards. In view of this, this utility model proposes a desoldering machine for circuit board processing. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a desoldering machine for circuit board processing to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a desoldering machine for circuit board processing, including a base plate, a desoldering box on the top of the base plate, an L-shaped bracket on one side of the desoldering box, two electric push rods on the top of the L-shaped bracket, and a box cover installed on the output end of the two electric push rods.

[0008] To enable clamping and fixing multiple circuit boards, preferably, the bottom of the enclosure cover is provided with several clamping structures. Each clamping structure includes a clamping block, which is fixedly installed on the bottom of the enclosure cover. The surface of the clamping block has a rectangular slot, and the inside of the clamping block has a movable cavity. Both inner walls of the rectangular slot have movable grooves that communicate with the movable cavity. A clamping plate is slidably disposed inside the movable groove, and a movable plate is slidably disposed inside the movable cavity. Multiple compression springs are provided on one side of the movable plate. One end of the clamping plate is fixedly connected to the movable plate, and both ends of the compression springs are fixedly connected to the movable plate and the inner wall of the movable cavity, respectively.

[0009] To facilitate the lateral movement of the L-shaped bracket for loading and unloading circuit boards, a movable structure is preferably provided at the connection between the L-shaped bracket and the base plate. This movable structure includes a lead screw. Two mounting slots are formed on the surface of the base plate. The lead screw is located inside one of the mounting slots, and a sliding rod is located inside the other mounting slot. A motor is mounted at one end of the lead screw. A threaded block and a slider are respectively mounted on the outside of the lead screw and the sliding rod. The motor is fixedly mounted at one end of the base plate, and its output end is fixedly connected to the lead screw inside one of the mounting slots. The threaded block is located outside the lead screw and is threadedly connected to it. The slider is slidably connected to the sliding rod. Both the threaded block and the slider are fixedly mounted at the bottom of the L-shaped bracket.

[0010] To prevent solder dross from falling into the desoldering solution, preferably, a concave frame is provided at the bottom of the box cover and around the periphery of multiple clamping blocks. The surface of the concave frame is provided with multiple filter holes. Two T-slots are provided on the lower surface of the box cover. Two T-blocks are provided at the top of the concave frame. The T-blocks are slidably connected inside the T-slots.

[0011] To facilitate the discharge of waste solder stripping solution from inside the solder stripping box, preferably, the surface of the solder stripping box is connected to a drain pipe, and a solenoid valve is installed on the surface of the drain pipe.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] 1. By setting up a clamping structure, multiple circuit boards are vertically clamped between two corresponding clamping plates. A compression spring compresses the movable plate, allowing it to slide inside the movable cavity and drive the clamping plate to slide inside the movable slot. This allows a single circuit board to be clamped and fixed between the two clamping plates. Each circuit board is clamped and fixed by a clamping structure, which separates and clamps multiple circuit boards, ensuring that each circuit board is in full contact with the desoldering solution during desoldering. Clamping and fixing multiple circuit boards facilitates desoldering operations on multiple circuit boards and improves desoldering efficiency.

[0014] 2. By setting up a moving structure, the motor drives the lead screw to rotate, which enables the threaded block to move the L-shaped bracket laterally. The slider slides and guides the L-shaped bracket to move closer to and away from the solder box, which facilitates the loading of the circuit board desoldering process and the unloading of the circuit board after desoldering.

[0015] 3. By installing the concave frame at the bottom of the box cover using T-blocks and T-slots, the solder dross that falls off the circuit board after desoldering will fall directly onto the surface of the concave frame. The desoldering solution is filtered out through the filter holes, thus preventing solder dross from falling into the desoldering solution and causing contamination. By sliding the T-block out of the T-slot, the concave frame can be disassembled from the box cover, making it easy to clean the filter holes on the surface of the concave frame. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a three-dimensional schematic diagram of the clamping structure of this utility model.

[0018] Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0019] Figure 4 This is a schematic diagram of the connection structure between the concave frame and the box cover of this utility model.

[0020] Figure 5 This is a schematic diagram of the connection structure between the L-shaped bracket and the base plate of this utility model.

[0021] The attached diagram is labeled as follows: 1. Base plate; 2. Desoldering box; 3. L-shaped bracket; 4. Electric push rod; 5. Box cover; 6. Clamping block; 7. Rectangular slot; 8. Movable cavity; 9. Clamping plate; 10. Movable plate; 11. Compression spring; 12. Lead screw; 13. Slide rod; 14. Threaded block; 15. Slider; 16. Concave frame; 17. Filter hole; 18. T-slot; 19. T-block; 20. Drain pipe. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] As attached Figure 1-5The circuit board desoldering machine shown includes a base plate 1, a desoldering box 2 on the top of the base plate 1, an L-shaped bracket 3 on one side of the desoldering box 2, two electric push rods 4 on the top of the L-shaped bracket 3, and a box cover 5 installed on the output end of the two electric push rods 4.

[0024] Specifically, in this structure, the desoldering box 2 stores desoldering fluid for desoldering circuit boards. After clamping multiple circuit boards, the box cover 5 is extended downward by the electric push rod 4, so that multiple circuit boards are inside the desoldering box 2. The desoldering fluid inside the desoldering box 2 desolders the surface of the circuit boards.

[0025] In a specific embodiment, as shown in the appendix Figure 1 , 2 As shown in Figure 3, the bottom of the box cover 5 is provided with several clamping structures, including clamping blocks 6. The clamping blocks 6 are fixedly installed on the bottom of the box cover 5. A rectangular slot 7 is opened on the surface of the clamping block 6. A movable cavity 8 is provided inside the clamping block 6. Both inner walls of the rectangular slot 7 are provided with movable grooves that communicate with the movable cavity 8. A clamping plate 9 is slidably arranged inside the movable groove. A movable plate 10 is slidably arranged inside the movable cavity 8. A plurality of compression springs 11 are provided on one side of the movable plate 10. One end of the clamping plate 9 is fixedly connected to the movable plate 10. The two ends of the compression springs 11 are fixedly connected to the movable plate 10 and the inner wall of the movable cavity 8, respectively.

[0026] Specifically, this structure is used to clamp and fix multiple circuit boards, which facilitates the desoldering operation of multiple circuit boards and improves the desoldering efficiency. Specifically, multiple circuit boards are clamped vertically between two clamping plates 9. The compression spring 11 compresses the movable plate 10, so that the movable plate 10 can slide inside the movable cavity 8 and drive the clamping plate 9 to slide inside the movable slot, thereby clamping and fixing a single circuit board between the two clamping plates 9.

[0027] The number of clamping structures is the same as the number of circuit boards. Each circuit board is clamped and fixed by one clamping structure, which separates and clamps multiple circuit boards to ensure that each circuit board is in full contact with the desoldering solution during desoldering.

[0028] In a specific embodiment, as shown in the appendix Figure 1 , 5As shown, a movable structure is provided at the connection between the L-shaped bracket 3 and the base plate 1. The movable structure includes a lead screw 12. Two mounting slots are opened on the surface of the base plate 1. The lead screw 12 is located inside one of the mounting slots, and a slide rod 13 is located inside the other mounting slot. A motor is installed at one end of the lead screw 12. A threaded block 14 and a slider 15 are respectively installed on the outside of the lead screw 12 and the slide rod 13. The motor is fixedly installed at one end of the base plate 1. The output end of the motor is fixedly connected to the lead screw 12 inside one of the mounting slots. The threaded block 14 is located outside the lead screw 12 and is threadedly connected to the lead screw 12. The slider 15 is slidably connected to the slide rod 13. Both the threaded block 14 and the slider 15 are fixedly installed at the bottom of the L-shaped bracket 3.

[0029] Specifically, in this structure, the motor drives the lead screw 12 to rotate, which enables the threaded block 14 to move the L-shaped bracket 3 laterally. The slider 15 slides and guides the L-shaped bracket 3 outside the slide bar 13, making it convenient to move the L-shaped bracket 3 closer to or away from the solder box. This provides convenience for loading the circuit board during the solder removal process and unloading the circuit board after solder removal.

[0030] In a specific embodiment, as shown in the appendix Figure 1 , 4 As shown, a concave frame 16 is provided at the bottom of the box cover 5 and around the periphery of multiple clamping blocks 6. Multiple filter holes 17 are provided on the surface of the concave frame 16. Two T-shaped grooves 18 are provided on the lower surface of the box cover 5. Two T-shaped blocks 19 are provided on the top of the concave frame 16. The T-shaped blocks 19 are slidably connected inside the T-shaped grooves 18.

[0031] Specifically, in this structure, the concave frame 16 is installed at the bottom of the cover 5 via the T-block 19 and the T-slot 18. The solder dross that falls off the circuit board after desoldering will fall directly onto the surface of the concave frame 16. The desoldering solution is filtered out through the filter hole 17, thereby preventing the solder dross from falling into the interior of the desoldering solution and causing pollution. When it is necessary to clean the filter hole 17 on the surface of the concave frame 16, the T-block 19 is slid out from the inside of the T-slot 18, and the concave frame 16 can be disassembled from the cover 5, making it convenient to clean the filter hole 17 on the surface of the concave frame 16.

[0032] In a specific embodiment, as shown in the appendix Figure 1 As shown, a drain pipe 20 is connected to the surface of the desoldering box 2, and a solenoid valve is installed on the surface of the drain pipe 20. Opening the solenoid valve allows the drain pipe 20 to discharge the waste desoldering solution inside the desoldering box 2.

[0033] Working principle of this utility model:

[0034] This application provides a desoldering machine for circuit board processing. In specific operation, multiple circuit boards to be desoldered are first clamped and fixed between two clamping plates 9, and the concave frame 16 is connected to the box cover 5 through T-block 19 and T-slot 18.

[0035] Then, the electric push rod 4 drives the box cover 5 to lift, so that the clamped circuit board and the installed concave frame 16 are raised to a certain height. The motor drives the lead screw 12 to run, so that the threaded block 14 drives the L-shaped bracket 3 to move laterally, and the slider 15 slides and guides it outside the slider 13, so that the L-shaped bracket 3 moves closer to the desoldering box 2. When the clamped circuit board and the installed concave frame 16 are moved to the top of the desoldering box, the electric push rod 4 drives the concave frame 16 and the circuit board together into the interior of the desoldering box 2, so that the box cover 5 is on the surface of the desoldering box 2, and then the desoldering liquid inside the desoldering box 2 desolders the circuit board.

[0036] After the desoldering is completed, the electric push rod 4 drives the circuit board and the concave frame 16 to extend out from the inside of the desoldering box 2. The desoldering dross on the surface of the circuit board falls onto the surface of the concave frame 16, while the desoldering liquid is discharged through the filter hole 17, thereby preventing the dross from falling into the desoldering liquid and causing pollution.

[0037] The L-shaped bracket 3 moves away from the desoldering box 2, causing the circuit board to move to one side of the desoldering box 2. The electric push rod 4 extends downward to move the circuit board to the lowest point, allowing the desoldered circuit board to be disassembled.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A desoldering machine for circuit board processing, comprising a base plate (1), characterized in that: The base plate (1) is provided with a desoldering box (2) on the top. An L-shaped bracket (3) is provided on one side of the desoldering box (2). Two electric push rods (4) are provided on the top of the L-shaped bracket (3). The output ends of the two electric push rods (4) are jointly installed with a box cover (5). Several clamping structures are provided at the bottom of the box cover (5). A movable structure is provided at the connection between the L-shaped bracket (3) and the base plate (1). The clamping structure includes a clamping block (6), which is fixedly installed at the bottom of the box cover (5). A rectangular slot (7) is provided on the surface of the clamping block (6). An active cavity (8) is provided inside the clamping block (6). An active groove communicating with the active cavity (8) is provided on both inner walls of the rectangular slot (7). A clamping plate (9) is slidably arranged inside the active groove. An active plate (10) is slidably arranged inside the active cavity (8). A plurality of compression springs (11) are provided on one side of the active plate (10).

2. The desoldering machine for circuit board processing according to claim 1, characterized in that: The moving structure includes a lead screw (12), and two mounting slots are opened on the surface of the base plate (1). The lead screw (12) is located inside one of the mounting slots, and a slide rod (13) is provided inside the other mounting slot. A motor is provided at one end of the lead screw (12), and a threaded block (14) and a slider (15) are respectively provided on the outside of the lead screw (12) and the slide rod (13).

3. The desoldering machine for circuit board processing according to claim 2, characterized in that: The motor is fixedly installed at one end of the base plate (1). The output end of the motor is fixedly connected to the lead screw (12) inside one of the mounting slots. The threaded block (14) is located outside the lead screw (12) and is threadedly connected to the lead screw (12). The slider (15) is slidably connected to the slide rod (13). The threaded block (14) and the slider (15) are both fixedly installed at the bottom of the L-shaped bracket (3).

4. The desoldering machine for circuit board processing according to claim 1, characterized in that: A concave frame (16) is provided at the bottom of the box cover (5) and around the periphery of the multiple clamping blocks (6), and the surface of the concave frame (16) is provided with multiple filter holes (17); The lower surface of the box cover (5) has two T-shaped grooves (18), and the top of the concave frame (16) is provided with two T-shaped blocks (19), which are slidably connected inside the T-shaped grooves (18).

5. The desoldering machine for circuit board processing according to claim 1, characterized in that: The surface of the desoldering box (2) is connected to a drain pipe (20), and a solenoid valve is installed on the surface of the drain pipe (20).

6. The desoldering machine for circuit board processing according to claim 1, characterized in that: One end of the clamping plate (9) is fixedly connected to the movable plate (10), and both ends of the compression spring (11) are fixedly connected to the inner walls of the movable plate (10) and the movable cavity (8), respectively.

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