Circuit board cleaning device

Abstract

The utility model relates to the related technical field of circuit board cleaning, in particular to a circuit board cleaning device which comprises a cleaning box and a placing table arranged in the cleaning box, and the placing table is detachably connected with the cleaning box. The etched circuit board is limited through the placement table, the water pumping assembly and the reciprocating driving piece are started to work at the same time, and therefore when the reciprocating driving piece drives the spraying assembly to move back and forth at the upper end of the circuit board, the water pumping assembly is driven to move back and forth at the upper end of the circuit board, and the spraying assembly is driven to move back and forth at the lower end of the circuit board. The spraying assembly performs spraying work on the circuit board, and when the spraying assembly reciprocates to be far away from the end part of the stroke, the spraying direction of the spraying assembly is changed, and the spraying assembly can avoid angle deviation caused by the influence of gravity, so that the spraying assembly always sprays the circuit board at an inclined angle; the etching agent clamped in the line corner can be flushed and removed, and the cleaning effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field related to circuit board cleaning, in particular to a circuit board cleaning device. Background Art

[0002] During the etching process of the circuit board, some chemical substances may remain, such as flux and rosin. If these residues are not removed in time, they may affect the performance of the circuit board and even cause circuit short circuit or failure. Therefore, cleaning the circuit board is a necessary step to remove these residues and ensure the performance and reliability of the circuit board.

[0003] There are many ways to clean circuit boards, including using board washing water (circuit board cleaning agent), chemical cleaning agents, ultrasonic cleaning, etc. The selection of the appropriate cleaning method depends on the material of the circuit board, the degree of contamination, and the use environment after cleaning. For example, board washing water is a commonly used circuit board cleaning agent used to remove residues after welding. However, with the improvement of environmental awareness, some traditional cleaning methods, such as the use of substances harmful to the ozone layer such as CFC-113, have been banned or restricted. Now it is more inclined to use environmentally friendly and efficient cleaning methods, such as water-based cleaning, semi-aqueous cleaning or no-cleaning processes.

[0004] Existing circuit board cleaning devices can use a method of using high-pressure water jets to remove residues. When spraying, the cleaning agent is generally sprayed on the circuit board from a fixed direction for cleaning. Circuit patterns and wire routes will be formed on the etched circuit board, making the circuit board uneven. Since the cleaning agent can only be sprayed in a fixed direction, the etching agent stuck in the corner of the line cannot be easily removed, which increases the difficulty of the cleaning work. Utility Model Content

[0005] The purpose of the utility model is to provide a circuit board cleaning device to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A circuit board cleaning device comprises a cleaning box and a placing table arranged in the cleaning box, wherein the placing table is detachably connected to the cleaning box;

[0008] The spray assembly is arranged in the cleaning box and connected to a reciprocating drive installed in the cleaning box. When the reciprocating drive controls the spray assembly to move away from the end of the stroke, the spraying angle of the spray assembly changes.

[0009] The circuit board cleaning device as described above: a plurality of clamping plates are arranged on the placement table, and the clamping ends of the clamping plates are arranged in a U-shaped structure.

[0010] The circuit board cleaning device as described above: the reciprocating drive member includes a drive disk rotatably mounted in the cleaning box, the rotating shaft of the drive disk is driven to rotate by a first motor fixedly mounted in the cleaning box, and an eccentric shaft is provided at an eccentric position of the drive disk;

[0011] It also includes a movable plate, which is slidably installed in the cleaning box through a guide rod, and a sliding groove that is slidably matched with the eccentric shaft is formed on the movable plate.

[0012] The circuit board cleaning device as described above: the reciprocating moving member includes a driving disk rotatably mounted in the cleaning box, the rotating shaft of the driving disk is rotatably connected to a driving shaft rotatably mounted in the cleaning box through a bevel gear set, the driving shaft is rotatably connected to an output shaft of the motor, and an eccentric shaft is provided at an eccentric position of the driving disk;

[0013] It also includes a movable plate, which is slidably installed in the cleaning box through a guide rod, and a sliding groove that is slidably matched with the eccentric shaft is formed on the movable plate.

[0014] The circuit board cleaning device as described above: at least one group of strip grooves is formed in the cleaning box, and strip blocks that slidably cooperate with the strip grooves are formed on the guide rod.

[0015] The circuit board cleaning device as described above: ratchet plates are symmetrically arranged in the cleaning box.

[0016] The circuit board cleaning device as described above: The circuit board cleaning device also includes a water pump assembly, the water pump assembly includes a motor fixedly installed in the cleaning box and an impeller assembly fixedly connected to the motor, and the impeller assembly is provided with a water outlet and a water inlet.

[0017] The circuit board cleaning device as described above: the spray assembly includes an articulated sleeve, the articulated sleeve is rotatably mounted on the bottom of the movable plate via a connecting shaft, a ratchet engaged with the ratchet plate is fixedly arranged on the connecting shaft, a connecting pipe is inserted into one end of the articulated sleeve away from the connecting shaft, a cavity formed in the connecting pipe is connected to the water outlet end of the impeller assembly via a hose, a nozzle is fixedly connected to one end of the connecting pipe away from the articulated sleeve, and the nozzle is connected to the cavity;

[0018] It also includes a spring, which is arranged in the hinge sleeve, one end of the spring is rotatably connected to the connecting pipe, and the other end of the spring is rotatably connected to the bottom of the movable plate.

[0019] Compared with the prior art, the beneficial effects of the utility model are as follows: the etched circuit board is limited by the placement table, and the water pump assembly and the reciprocating drive are started to work simultaneously, so that when the reciprocating drive drives the spray assembly to reciprocate at the upper end of the circuit board, the spray assembly sprays the circuit board, and when the spray assembly reciprocates away from the end of the stroke, the spraying direction of the spray assembly is changed, so that the spray assembly always maintains an inclined angle to spray the circuit board, so that the etchant stuck in the corner of the circuit can be cleaned and removed, thereby improving the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a circuit board cleaning device.

[0021] Figure 2 This is a schematic diagram of the structure inside the cleaning box in the circuit board cleaning device.

[0022] Figure 3 This is a schematic diagram of the structure of the water pump assembly in the circuit board cleaning device.

[0023] Figure 4 It is a schematic diagram of the structure of the reciprocating moving parts in the circuit board cleaning device.

[0024] Figure 5 It is a schematic diagram of the structure of the movable plate and the extension plate at its bottom and the connecting shaft in the circuit board cleaning device.

[0025] Figure 6 This is a schematic diagram of the structure of the spraying component in the circuit board cleaning device.

[0026] In the figure: 1, cleaning box; 101, strip groove; 2, placing table; 201, through hole; 3, clamping plate; 4, water pump assembly; 5, first motor; 6, support frame; 7, hose; 8, driving disk; 801, eccentric shaft; 9, movable plate; 901, slide groove; 10, guide rod; 1001, strip block; 11, ratchet plate; 12, ratchet; 13, connecting shaft; 14, connecting pipe; 15, nozzle; 16, hinge sleeve; 17, spring. DETAILED DESCRIPTION

[0027] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0028] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0029] In addition, in order to better illustrate the present application, numerous specific details are provided in the specific embodiments below. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods, means, and elements well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.

[0030] See also Figure 1 to Figure 6 In an embodiment of the utility model, a circuit board cleaning device includes a cleaning box 1, a placement table 2, a reciprocating drive member and a spraying component.

[0031] For details, please refer to Figure 2 , Figure 3 ,include;

[0032] A cleaning box 1 and a placement table 2 arranged in the cleaning box 1, wherein the placement table 2 is detachably connected to the cleaning box 1;

[0033] The spray assembly is arranged in the cleaning box 1 and connected to a reciprocating drive installed in the cleaning box 1. When the reciprocating drive controls the spray assembly to move to the end of the stroke, the spraying angle of the spray assembly changes.

[0034] In detail, in this embodiment, the circuit board cleaning device described in the utility model is adopted. When in use, the etched circuit board is limited by the placement table 2, and the water pump assembly 4 and the reciprocating drive are started to work simultaneously, so that when the reciprocating drive drives the spray assembly to reciprocate at the upper end of the circuit board, the spray assembly sprays the circuit board, and when the spray assembly reciprocates away from the end of the stroke, the spraying direction of the spray assembly is changed, so that the spray assembly always maintains an inclined angle to spray the circuit board, so that the etchant stuck in the corner of the circuit can be rinsed away, thereby improving the cleaning effect.

[0035] Preferably, a plurality of clamps 3 are provided on the placement table 2, and the clamping ends of the clamps 3 are arranged in a U-shaped structure, wherein the clamping ends adopt U-shaped spring pieces, and the circuit board is clamped in the U-shaped groove, mainly to prevent the force position of the circuit board from being offset when the circuit board is cleaned.

[0036] Preferably, a plurality of linearly distributed through holes 201 are formed on the placement table 2, so that the cleaning liquid after cleaning the circuit board enters the water tank in the cleaning box 1 through the through holes 201 and is discharged to the outside.

[0037] See also Figure 3 and Figure 4 The reciprocating drive member includes a drive disk 8 rotatably mounted in the cleaning box 1, the rotating shaft of the drive disk 8 is driven to rotate by a first motor 5 fixedly mounted in the cleaning box 1, and an eccentric shaft 801 is provided at an eccentric position of the drive disk 8;

[0038] It also includes a movable plate 9, which is slidably installed in the cleaning box 1 through a guide rod 10, and a sliding groove 901 that is slidably matched with the eccentric shaft 801 is formed on the movable plate 9.

[0039] Preferably, the first motor 5 is fixedly mounted on the cleaning box 1 via a support frame 6 having an L-shaped structure, and reinforcing ribs are provided on the support frame 6 to enhance the stability of the support frame 6 and the cleaning box 1 .

[0040] To elaborate, after the circuit board is clamped and placed in the cleaning box 1, the first motor 5 is started to work. When the first motor 5 is working, it drives the output shaft to rotate. When the output shaft rotates, it drives the driving disk 8 to rotate synchronously to realize the rotation requirement of the driving disk 8. When the driving disk 8 rotates, it drives the eccentric shaft 801 to revolve. When the eccentric shaft 801 rotates, it moves in a directional manner in the slide groove 901 and squeezes the movable plate 9. Under the limiting action of the guide rod 10, the movable plate 9 can move back and forth in the cleaning box 1.

[0041] Preferably, at least one group of strip grooves 101 is formed in the cleaning box 1 , and a strip block 1001 slidably matched with the strip grooves 101 is formed on the guide rod 10 .

[0042] It should be noted that: when the guide rod 10 moves, it drives the bar block 1001 to move synchronously, and cooperates with the limiting function of the bar groove 101 to realize the movement of the guide rod 10 relative to the cleaning box 1. The bar block 1001 is slidably installed in the bar groove 101, thereby realizing the sliding connection between the guide rod 10 and the cleaning box 1, and does not affect the movement of the bar block 1001 with the movement of the guide rod 10.

[0043] Preferably, a ratchet plate 11 is symmetrically arranged in the cleaning box 1, wherein a plurality of linearly distributed grooves are formed on the ratchet plate 11, a ratchet bar is rotatably installed in the groove, a torsion spring is arranged between the groove and the ratchet bar, and when the spray assembly moves toward the side of the cleaning box 1, the torsion spring gives way to ensure that the ratchet plate 11 has no influence on the spraying direction of the spray assembly, and only when the spray assembly moves away from the end, the spray assembly contacts the ratchet bar, and mechanical transmission can occur to change the spraying direction of the spray assembly.

[0044] See also Figure 3 The water pump assembly 4 includes a motor fixedly installed in the cleaning box 1 and an impeller assembly fixedly connected to the motor, and the impeller assembly is provided with a water outlet and a water inlet.

[0045] The impeller assembly usually includes parts such as blades, discs, and impeller shafts. The impeller shaft is fixedly connected to the output shaft of the motor. When the motor is started, the motor drives the output shaft to rotate. When the output shaft rotates, it drives the impeller shaft to rotate synchronously to achieve the requirement of high-speed rotation of the blades and quickly transport the cleaning fluid to the spray assembly to perform cleaning work.

[0046] See also Figure 5 The spray assembly includes an articulated sleeve 16, which is rotatably mounted on the bottom of the movable plate 9 via a connecting shaft 13, and a ratchet 12 meshing with the ratchet plate 11 is fixedly arranged on the connecting shaft 13, and a connecting pipe 14 is inserted into the end of the articulated sleeve 16 away from the connecting shaft 13, and a cavity formed in the connecting pipe 14 is connected to the water outlet end of the impeller assembly through a hose 7, and a nozzle 15 is fixedly connected to the end of the connecting pipe 14 away from the articulated sleeve 16, and the nozzle 15 is connected to the cavity;

[0047] It also includes a spring 17, which is arranged in the hinge sleeve 16, one end of the spring 17 is rotatably connected to the connecting pipe 14, and the other end is rotatably connected to the bottom of the movable plate 9, wherein hooks are formed at both ends of the spring 17.

[0048] Furthermore, when the movable plate 9 performs a reciprocating movement, the hinge sleeve 16 and the connecting tube 14 are driven to move synchronously. When the movable plate 9 is about to move away from the end of the stroke, the ratchet 12 and the ratchet bar are meshed and transmitted, so that the connecting shaft 13 rotates to drive the hinge sleeve 16 and the connecting tube 14 to deflect relative to the movable plate 9. When the connecting tube 14 rotates to be parallel to the movable plate 9, the spring 17 is in the maximum tension state. Once the hinge sleeve 16 and the connecting tube 14 continue to rotate, the ratchet 12 is disengaged from the ratchet bar, and thereafter, the spring 17 is in the maximum tension state. The stored elastic potential energy generates an instantaneous force on the connecting tube 14, that is, the connecting tube 14 is rapidly deflected by a pulling force rotating toward the movable plate 9. After the connecting tube 14 is deflected to the point where the outer surface of the connecting tube 14 collides with the extension plate fixed at the bottom of the movable plate 9, the connecting tube 14 maintains the current deflection angle under the limiting effect of the extension plate at the bottom of the movable plate 9, thereby preventing the spraying angle of the connecting tube 14 from changing under the action of gravity when the connecting tube 14 moves, thereby making the nozzle 15 always tilted toward the circuit board, so that the etchant stuck in the corner of the circuit board can be cleaned and removed, thereby improving the cleaning effect.

[0049] It should be noted that since the spring 17 always gives the connecting tube 14 an elastic pulling force upward and toward the movable plate 9; and the joint fixedly arranged on the connecting tube 14 for connecting with the hose 7 is always stuck on the lower edge of the articulated sleeve 16, during the actual working process, no relative sliding will occur between the connecting tube 14 and the articulated sleeve 16.

[0050] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0051] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A circuit board cleaning device, characterized in that: It comprises a cleaning box (1) and a placement table (2) arranged in the cleaning box (1), wherein the placement table (2) is detachably connected to the cleaning box (1); A spray assembly is arranged in the cleaning box (1) and is connected to a reciprocating drive member installed in the cleaning box (1). When the reciprocating drive member controls the spray assembly to move away from the end of the stroke, the spraying angle of the spray assembly changes.

2. A circuit board cleaning device according to claim 1, characterized in that: A plurality of clamping plates (3) are arranged on the placement platform (2), and the clamping ends of the clamping plates (3) are arranged in a U-shaped structure.

3. A circuit board cleaning device according to claim 1, characterized in that: The reciprocating drive member comprises a drive disk (8) rotatably mounted in the cleaning box (1), the rotating shaft of the drive disk (8) being driven to rotate by a first motor (5) fixedly mounted in the cleaning box (1), and an eccentric shaft (801) being arranged at an eccentric position of the drive disk (8); It also includes a movable plate (9), which is slidably installed in the cleaning box (1) through a guide rod (10), and a sliding groove (901) is formed on the movable plate (9) to slide with the eccentric shaft (801).

4. A circuit board cleaning device according to claim 3, characterized in that: At least one group of strip grooves (101) is formed in the cleaning box (1), and a strip block (1001) that slidably cooperates with the strip grooves (101) is formed on the guide rod (10).

5. A circuit board cleaning device according to claim 3, characterized in that: Ratchet plates (11) are symmetrically arranged in the cleaning box (1).

6. A circuit board cleaning device according to claim 5, characterized in that: The circuit board cleaning device also includes a water pump assembly (4), which includes a motor fixedly installed in the cleaning box (1) and an impeller assembly fixedly connected to the motor, and the impeller assembly is provided with a water outlet and a water inlet.

7. A circuit board cleaning device according to claim 6, characterized in that: The spray assembly comprises an articulated sleeve (16), the articulated sleeve (16) is rotatably mounted on the bottom of the movable plate (9) via a connecting shaft (13), a ratchet (12) meshing with the ratchet plate (11) is fixedly arranged on the connecting shaft (13), a connecting pipe (14) is inserted into one end of the articulated sleeve (16) away from the connecting shaft (13), a cavity formed in the connecting pipe (14) is connected to the water outlet end of the impeller assembly via a hose (7), a spray head (15) is fixedly connected to one end of the connecting pipe (14) away from the articulated sleeve (16), and the spray head (15) is connected to the cavity; It also includes a spring (17), which is arranged in the hinge sleeve (16), one end of the spring (17) is rotatably connected to the connecting pipe (14), and the other end is rotatably connected to the bottom of the movable plate (9).

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