A tin stripping machine for processing circuit board

Abstract

The utility model discloses a kind of tin stripping machines of circuit board processing, is related to tin stripping machine technical field, including processing table, the top of processing table is equipped with tin stripping box, the top of processing table is fixed with fixed support, the top of fixed support is provided with first electric push rod;The device is provided with multiple size clamping mechanism, a longer circuit board can be clamped by two groups of compression frames, two smaller circuit boards can also be clamped respectively and processed simultaneously, so that production scheduling is more simplified and smooth, production tasks can be quickly switched without stopping, improve the utilization of equipment and overall production efficiency;By being provided with maintenance mechanism, when it needs to disassemble lifting plate and maintain or overhaul, installation pad can be conveniently separated from lifting plate, so that disassembly process becomes fast, also reduce the risk of damaging components due to improper disassembly, after maintenance is completed, reinstallation is also equally simple, reduce maintenance cost.

Description

Technical Field

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

[0002] A tin stripping machine for PCB manufacturing is a specialized piece of equipment used in the later stages of PCB manufacturing to remove the tin plating layer that serves as a temporary protective layer on the circuit pattern. After the alkaline etching process is completed, the protective function of this tin layer is finished, and it needs to be removed efficiently and safely by the tin stripping machine to expose the copper circuits that need to be retained for subsequent processing steps. This equipment usually uses a tin stripping solution (tin stripping water) to react chemically with the tin layer to achieve tin stripping.

[0003] For example, Chinese Patent Application No. 202022932627.4 discloses a desoldering machine for circuit board processing, including a housing, a drive mechanism, a filter mechanism, and a connecting mechanism. The drive mechanism and the filter mechanism are located inside the housing. This invention utilizes the cooperation of a cylinder, a fixed plate, a movable plate, a connecting plate, an electric push rod, a servo motor, rolling bearings, a fixed shaft, and clamping blocks to 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 and preventing injury. The cooperation of a filter screen, a fixing ring, a wire rope, a hook, and a counterweight facilitates the filtration of desoldering slag, allowing the desoldering solution to be recycled and avoiding resource waste. The inclusion of a hot air blower and an air nozzle facilitates the drying of the desoldered circuit board, providing great convenience to the user.

[0004] However, the aforementioned desoldering machines are not easily adaptable to the desoldering needs of circuit boards of different sizes and quantities during use. Frequent fixture changes are required when desoldering various types of circuit boards, affecting processing efficiency. Therefore, those skilled in the art have provided a desoldering machine for circuit board processing to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to provide a desoldering machine for circuit board processing to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A desoldering machine for circuit board processing includes a processing table, a desoldering box installed on the top of the processing table, a fixed bracket fixed on the top of the processing table, a first electric push rod on the top of the fixed bracket, a maintenance mechanism fixed at the bottom of the output shaft of the first electric push rod, a lifting plate connected to the bottom of the maintenance mechanism, and a multi-size clamping mechanism at the bottom of the lifting plate. The multi-size clamping mechanism includes a metal frame, a support frame fixed at the bottom of the metal frame, a second electric push rod mounted on the top of the support frame, a lifting frame fixed at the top of the output shaft of the second electric push rod, a transmission frame rotatably connected to both ends of the lifting frame via a rotating shaft, a rotating frame rotatably connected to the end of the transmission frame away from the lifting frame via a rotating shaft, a rotating rod rotatably connected to one end of the rotating frame via a rotating shaft, and a clamping frame rotatably connected to the end of the rotating rod away from the rotating frame via a rotating shaft.

[0007] As an improvement of this utility model: a connecting frame is installed at the bottom of the metal frame, and the connecting frame is rotatably connected to the rotating frame through a rotating shaft.

[0008] As an improvement of this utility model: the metal frame and the lifting plate are fixedly connected, and one side of the pressing frame is rotatably connected to the support frame through a rotating shaft.

[0009] As an improvement of this utility model: the maintenance mechanism includes a mounting pad, a limit sleeve is fixed to the top of the mounting pad, a fixing rod is installed on the top of the lifting plate, a rotating plate is rotatably connected to the outside of the fixing rod, a limit pad is fixed to the outside of the fixing rod, a first semi-threaded rod is installed on the top of the rotating plate, and a second semi-threaded rod is fixed on the top of the limit pad.

[0010] As an improvement of this utility model: the outer sides of the first and second semi-threaded rods are connected to a metal nut by a common thread, and the mounting pad and the output shaft of the first electric push rod are fixedly connected.

[0011] As an improvement of this utility model: the inside of the limiting sleeve is provided with a groove, the size of which is adapted to the size of the rotating plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. This device is equipped with a multi-size clamping mechanism, which can clamp a long circuit board together with two sets of clamping frames, or clamp two smaller circuit boards for processing at the same time. This reduces the frequency of changing special fixtures and the corresponding downtime due to processing circuit boards of different specifications, making the production schedule more streamlined and efficient. It can quickly switch production tasks without stopping the machine, improving the utilization rate of the equipment and the overall production efficiency. 2. With the maintenance mechanism in place, when the lifting platform needs to be disassembled for maintenance or repair, operators can easily separate the mounting pad from the lifting platform without using complicated tools. This makes the disassembly process quick, reduces the professional skills required of maintenance personnel, and also reduces the risk of damage to components due to improper disassembly. After maintenance, reinstallation is also simple, reducing maintenance costs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a front view of the present invention; Figure 3 This is a schematic diagram of the multi-size clamping mechanism in this utility model; Figure 4 for Figure 3 Enlarged schematic diagram of region B; Figure 5 for Figure 1 A magnified diagram of region A.

[0014] In the diagram: 1. Processing table; 2. Solder removal box; 3. Fixed bracket; 4. First electric push rod; 5. Lifting plate; 6. Multi-size clamping mechanism; 61. Metal frame; 62. Support frame; 63. Second electric push rod; 64. Lifting frame; 65. Transmission frame; 66. Rotating frame; 67. Rotating rod; 68. Pressing frame; 7. Maintenance mechanism; 71. Mounting pad; 72. Limiting sleeve; 73. Fixed rod; 74. Rotating plate; 75. Limiting pad; 76. First semi-threaded rod; 77. Second semi-threaded rod; 78. Metal nut. Detailed Implementation

[0015] The technical solution of this utility model will be further described in detail below with reference to specific embodiments: First Embodiment Please see Figures 1-5 A desoldering machine for circuit board processing includes a processing table 1, a desoldering box 2 installed on the top of the processing table 1, a fixed bracket 3 fixed on the top of the processing table 1, a first electric push rod 4 set on the top of the fixed bracket 3, a maintenance mechanism 7 fixed at the bottom of the output shaft of the first electric push rod 4, a lifting plate 5 connected to the bottom of the maintenance mechanism 7, and a multi-size clamping mechanism 6 set at the bottom of the lifting plate 5. The multi-size clamping mechanism 6 includes a metal frame 61, a support frame 62 fixed at the bottom of the metal frame 61, a second electric push rod 63 mounted on the top of the support frame 62, a lifting frame 64 fixed at the top of the output shaft of the second electric push rod 63, a transmission frame 65 rotatably connected to both ends of the lifting frame 64 via a rotating shaft, a rotating frame 66 rotatably connected to the end of the transmission frame 65 away from the lifting frame 64 via a rotating shaft, a rotating rod 67 rotatably connected to one end of the rotating frame 66 via a rotating shaft, a clamping frame 68 rotatably connected to the end of the rotating rod 67 away from the rotating frame 66 via a rotating shaft, a connecting frame mounted at the bottom of the metal frame 61, the connecting frame rotatably connected to the rotating frame 66 via a rotating shaft, the metal frame 61 and the lifting plate 5 fixedly connected, and one side of the clamping frame 68 rotatably connected to the support frame 62 via a rotating shaft.

[0016] With the above setup, during the desoldering process of circuit board processing, the corresponding small-sized circuit board is placed under the support frame 62. After the second electric push rod 63 is activated, the output shaft of the second electric push rod 63 drives the lifting frame 64 to move vertically, causing the lifting frame 64 to move one end of the transmission frame 65. The other end of the transmission frame 65 pulls the rotating frame 66 to rotate, which in turn drives the rotating rod 67 to rotate, thereby pressing the two clamping frames 68 against the bottom of the corresponding circuit board. Then, the first electric push rod 4 is activated to drive the lifting plate 5 and the metal frame 61 to move vertically, immersing the circuit board in the desoldering box 2, thus completing the desoldering process of the circuit board. When performing the desoldering process on longer circuit boards, two sets of clamping frames 68 can be clamped simultaneously, achieving the purpose of flexibly adapting to different sizes and quantities of circuit boards. It can process two small circuit boards or one large circuit board at the same time, reducing the frequency of changing special fixtures and downtime, simplifying production scheduling, and is particularly suitable for the desoldering process of processing multiple types of circuit boards.

[0017] In summary, when the second electric push rod 63 is activated, it drives the lifting frame 64 to move vertically, which in turn drives the rotating frame 66 to rotate via the transmission frame 65. Finally, the force is transmitted to the clamping frame 68, which can clamp the circuit board placed under the support frame 62. This allows for flexible adaptation to circuit boards of different sizes and quantities. Both sets of clamping frames 68 can clamp a long circuit board together, or they can clamp two smaller circuit boards separately for processing. This reduces the frequency of changing special fixtures and the corresponding downtime caused by processing circuit boards of different specifications. It simplifies and streamlines the production schedule, and allows for quick switching of production tasks without stopping the machine, thereby improving equipment utilization and overall production efficiency.

[0018] Second Embodiment Please see Figures 1-5 Based on the first embodiment, the maintenance mechanism 7 includes a mounting pad 71, a limiting sleeve 72 fixed to the top of the mounting pad 71, a fixing rod 73 mounted on the top of the lifting plate 5, a rotating plate 74 rotatably connected to the outside of the fixing rod 73, a limiting pad 75 fixed to the outside of the fixing rod 73, a first semi-threaded rod 76 mounted on the top of the rotating plate 74, a second semi-threaded rod 77 fixed to the top of the limiting pad 75, and a metal nut 78 threadedly connected to the outside of the first semi-threaded rod 76 and the second semi-threaded rod 77. The mounting pad 71 is fixedly connected to the output shaft of the first electric push rod 4, and a groove is provided inside the limiting sleeve 72, the size of which is adapted to the size of the rotating plate 74.

[0019] With the above settings, when the lifting plate 5 needs to be disassembled for equipment maintenance, simply remove the metal nut 78 from the outside of the first half-threaded rod 76 and the second half-threaded rod 77 to release the lock of the rotating plate 74. Then, move the rotating plate 74 to disengage it from the limiting sleeve 72. This allows for easy unlocking and disassembly between the mounting pad 71 and the lifting plate 5, achieving the goal of easy disassembly and maintenance. Furthermore, the operation is relatively simple when reinstalling after disassembly, thus improving maintenance efficiency.

[0020] In summary, when the lifting plate 5 needs to be disassembled for maintenance or repair, the operator does not need to use complicated tools. Simply unscrew the metal nut 78 from the first half-threaded rod 76 and the second half-threaded rod 77 to release the lock on the rotating plate 74. Then, move the rotating plate 74 to disengage it from the groove of the limiting sleeve 72, and the mounting pad 71 can be easily separated from the lifting plate 5. This improves the maintainability of the equipment, makes the disassembly process quick, reduces the professional skills required of maintenance personnel, and also reduces the risk of damage to parts due to improper disassembly. After maintenance, reinstallation is also simple, reducing maintenance costs.

[0021] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A desoldering machine for circuit board processing, comprising a processing table (1), characterized in that, The processing table (1) is equipped with a desoldering box (2) on top, and a fixed bracket (3) is fixed on the top of the processing table (1). A first electric push rod (4) is provided on the top of the fixed bracket (3). A maintenance mechanism (7) is fixed at the bottom of the output shaft of the first electric push rod (4). A lifting plate (5) is connected to the bottom of the maintenance mechanism (7). A multi-size clamping mechanism (6) is provided at the bottom of the lifting plate (5). The multi-size clamping mechanism (6) includes a metal frame (61), a support frame (62) is fixed at the bottom of the metal frame (61), a second electric push rod (63) is installed at the top of the support frame (62), a lifting frame (64) is fixed at the top of the output shaft of the second electric push rod (63), a transmission frame (65) is rotatably connected to both ends of the lifting frame (64) via a rotating shaft, a rotating frame (66) is rotatably connected to the end of the transmission frame (65) away from the lifting frame (64) via a rotating shaft, a rotating rod (67) is rotatably connected to one end of the rotating frame (66) via a rotating shaft, and a clamping frame (68) is rotatably connected to the end of the rotating rod (67) away from the rotating frame (66) via a rotating shaft.

2. The desoldering machine for circuit board processing according to claim 1, characterized in that, The bottom of the metal frame (61) is equipped with a connecting frame, which is rotatably connected to the rotating frame (66) via a rotating shaft.

3. The desoldering machine for circuit board processing according to claim 2, characterized in that, The metal frame (61) and the lifting plate (5) are fixedly connected, and one side of the pressing frame (68) is rotatably connected to the support frame (62) through a rotating shaft.

4. The desoldering machine for circuit board processing according to claim 1, characterized in that, The maintenance mechanism (7) includes a mounting pad (71), a limiting sleeve (72) is fixed to the top of the mounting pad (71), a fixing rod (73) is installed on the top of the lifting plate (5), a rotating plate (74) is rotatably connected to the outside of the fixing rod (73), a limiting pad (75) is fixed to the outside of the fixing rod (73), a first semi-threaded rod (76) is installed on the top of the rotating plate (74), and a second semi-threaded rod (77) is fixed on the top of the limiting pad (75).

5. A desoldering machine for circuit board processing according to claim 4, characterized in that, The first semi-threaded rod (76) and the second semi-threaded rod (77) are connected by a metal nut (78) on their common outer threads, and the mounting pad (71) and the output shaft of the first electric push rod (4) are fixedly connected.

6. The desoldering machine for circuit board processing according to claim 5, characterized in that, The limiting sleeve (72) has a groove inside, the size of which is adapted to the size of the rotating plate (74).

Images