A circuit board screen cleaning device

Abstract

This utility model discloses a circuit board stencil cleaning device, including a chamber for cleaning the stencil, an exhaust device disposed in the chamber, a fixing device disposed in the chamber for vertically placing the stencil, a text stencil cleaning box and a solder resist stencil cleaning box disposed at the bottom of the chamber for holding cleaning agent, a delivery pump connected to the text stencil cleaning box and the solder resist stencil cleaning box, and a spraying device. The spraying device includes a cleaning agent delivery pipe connected to the delivery pump, slide rails disposed on opposite side walls of the chamber, a mounting base slidably connected to the slide rails, a spray pipe disposed on the mounting base, a plurality of nozzles mounted on the spray pipe, and a power device for driving the mounting base to slide along the slide rails. The nozzles are arranged facing the stencil, and the cleaning agent delivery pipe is connected to the spray pipe via a flexible hose. The circuit board stencil cleaning device of this utility model has the advantages of good cleaning effect, high efficiency, low labor intensity, and can greatly save the amount of cleaning agent used.

Description

Technical Field

[0001] This utility model relates to the field of circuit board manufacturing technology, specifically to a circuit board stencil cleaning device. Background Technology

[0002] After repeated ink printing, the screens used for screen printing on circuit boards can become clogged. At this point, the screens need to be cleaned with screen cleaning solution, anti-whitening agent, or organic solvents to remove the residual ink. Traditional screen cleaning processes involve manual wiping with a cloth dampened with screen cleaning solution, which suffers from problems such as harsh working conditions, high labor intensity, incomplete cleaning, low efficiency, and large amounts of cleaning agent consumption.

[0003] Therefore, it is necessary to provide a screen cleaning device to solve the above-mentioned technical problems. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a circuit board screen cleaning device, which has the advantages of good cleaning effect, high efficiency, low labor intensity, and can greatly save the amount of cleaning agent used.

[0005] The technical solution of this utility model is:

[0006] A circuit board stencil cleaning device includes a chamber for cleaning the stencil, an exhaust device disposed in the chamber, a fixing device disposed in the chamber for vertically placing the stencil, a text stencil cleaning box and a solder resist stencil cleaning box disposed at the bottom of the chamber for holding cleaning agent, a delivery pump connected to the text stencil cleaning box and the solder resist stencil cleaning box, and a spraying device. The spraying device includes a cleaning agent delivery pipe connected to the delivery pump, slide rails disposed on opposite side walls of the chamber, a mounting base slidably connected to the slide rails, a spray pipe disposed on the mounting base, a plurality of nozzles mounted on the spray pipe, and a power device for driving the mounting base to slide along the slide rails. The nozzles are arranged facing the stencil, and the cleaning agent delivery pipe is connected to the spray pipe via a flexible hose.

[0007] Furthermore, the distance between the nozzle and the screen is 5-10cm.

[0008] Furthermore, the nozzle is a fan-shaped nozzle, and the water flow is sprayed in a fan shape.

[0009] Furthermore, there are 2-4 spray pipes, which are spaced apart.

[0010] Furthermore, control valves are respectively provided on the pipelines connecting the text screen cleaning box and the weld bead screen cleaning box to the conveying pump. The circuit board screen cleaning device also includes a control device, which is electrically connected to the control valve.

[0011] Furthermore, a cleaning agent recovery tank is provided at the bottom of the chamber.

[0012] Furthermore, 2-4 wire mesh panels are fixed inside the chamber.

[0013] Furthermore, the fixing device includes a top fixing rod disposed on the top of the silo body, side rods disposed on opposite side walls of the silo body, a plurality of position adjustment devices disposed on the side rods and distributed in the vertical direction, a bottom fixing rod detachably connected to the position adjustment devices and parallel to the top fixing rod, and a plurality of clamps disposed on the top fixing rod and the bottom fixing rod, wherein the clamps of the top fixing rod and the bottom fixing rod hold the two ends of the screen.

[0014] Furthermore, the position adjustment device consists of several mounting holes on the side rod, and the bottom fixing rod is fixed to the side rod by connecting screws provided at the mounting holes.

[0015] Compared with the prior art, the circuit board screen cleaning device provided by this utility model has the following advantages:

[0016] I. The circuit board stencil cleaning device provided by this utility model includes a text stencil cleaning tank and a solder resist stencil cleaning tank inside the chamber to hold the corresponding cleaning agents. During stencil cleaning, the stencil is placed vertically, and the cleaning agent from the text / solder resist cleaning tank is delivered to the spray pipe via a corresponding delivery pump. The agent is then sprayed onto the stencil surface through nozzles. By moving the spray pipe vertically, the entire surface of the stencil is coated with the cleaning agent. This circuit board stencil cleaning device has the advantages of good cleaning effect, high efficiency, and low manual labor intensity.

[0017] II. The circuit board screen cleaning device provided by this utility model sprays and washes the ink on the screen using a spraying device, resulting in good cleaning effect and greatly saving the amount of cleaning agent used; in addition, a cleaning agent recovery tank is set at the bottom of the chamber to recover the cleaning agent, further reducing the amount of cleaning agent used. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is an external schematic diagram of the circuit board screen cleaning device of this utility model;

[0020] Figure 2This is a partial structural diagram of the internal structure of the circuit board screen cleaning device of this utility model.

[0021] Figure 3 yes Figure 2 The diagram shows the structure of the screen fixing device in the circuit board screen cleaning device.

[0022] Figure 4 yes Figure 2 The diagram shows the structure of the spray washing device in the circuit board screen cleaning apparatus.

[0023] Figure 5 This is a schematic diagram of the cleaning agent delivery process in the circuit board screen cleaning device of this utility model. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solutions in the embodiments of this utility model, and to make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be further described below.

[0025] The endpoints and any values ​​of the ranges disclosed herein are not limited to the precise ranges or values, and these ranges or values ​​should be understood to include values ​​close to these ranges or values. For numerical ranges, the endpoint values ​​of the various ranges, the endpoint values ​​of the various ranges and individual point values, and individual point values ​​can be combined with each other to obtain one or more new numerical ranges, which should be considered as specifically disclosed herein.

[0026] Please refer to the following: Figures 1 to 5 ,in Figure 1 This is an external schematic diagram of the circuit board screen cleaning device of this utility model; Figure 2 This is a partial structural diagram of the internal structure of the circuit board screen cleaning device of this utility model. Figure 3 yes Figure 2 The diagram shows the structure of the screen fixing device in the circuit board screen cleaning device.

[0027] Figure 4 yes Figure 2 The diagram shows the structure of the spray washing device in the circuit board screen cleaning apparatus. Figure 5 This is a schematic diagram of the cleaning agent delivery process in the circuit board stencil cleaning device of this utility model. The circuit board stencil cleaning device of this utility model includes a chamber 1, a chamber door 2 located in the chamber 1, an exhaust device 3 located on the chamber 1, a fixing device 4 located inside the chamber 1 for vertically placing the stencil, a text stencil cleaning box 5 and a solder resist stencil cleaning box 6 located at the bottom of the chamber, a delivery pump 7 connected to the text stencil cleaning box 5 and the solder resist stencil cleaning box 6, and a spray washing device 9 connected to the delivery pump 7 for spraying and rinsing the stencil.

[0028] In this invention, the compartment door 2 has a self-locking function, preventing it from opening during the cleaning process and thus avoiding spillage of the cleaning agent due to improper operation. Specifically, the compartment door 2 is opened or closed by a control device according to the operating program.

[0029] The exhaust device 3 is located at the top of the chamber 1 and is used to discharge the waste gas generated in the chamber during the cleaning of the screen. The waste gas is then centrally treated after discharge.

[0030] The fixing device 4 is used to clamp and fix the screen 200. In this invention, the screen is placed vertically, which facilitates the rinsing of the ink adhering to its surface during the rinsing process. Furthermore, in this invention, the number of fixing devices 4 is 2-4, corresponding one-to-one with the number of screens, meaning that 2-4 screens can be cleaned at a time in the chamber. Specifically, the fixing device 4 includes a top fixing rod 401 located at the top of the chamber, side rods 402 located on opposite side walls of the chamber, several position adjustment devices 403 located on the side rods and distributed vertically, a bottom fixing rod 404 detachably connected to the position adjustment devices 403 and parallel to the top fixing rod, and several clamps 405 located on the top fixing rod 401 and the bottom fixing rod 404. The clamps on the top fixing rod and the bottom fixing rod are used to clamp both ends of the screen.

[0031] In this embodiment, the position adjustment device 403 consists of several mounting holes on the side rod, and the bottom fixing rod is fixed to the side rod by connecting screws at the mounting holes. Alternatively, the position adjustment device 403 can be several slots, in which the bottom fixing rod 404 is embedded for fixation. During use, the connection position between the bottom fixing rod and the side rod is adjusted according to the size of the screen, and the bottom fixing rod is fixed at the connection position using the position adjustment device.

[0032] Text screen printing cleaning tank 5 and weld resist screen printing cleaning tank 6 are used to hold different cleaning agents, allowing each agent to be used for cleaning screens in different applications. The cleaning agent in text screen printing cleaning tank 5 is used for cleaning text screens, while the cleaning agent in weld resist screen printing cleaning tank 6 is used for cleaning weld resist screens. A delivery pump 7 is connected to both tanks 5 and 6 to deliver the cleaning agent from each tank.

[0033] The spray washing device 9 includes a cleaning agent delivery pipe 901 connected to the delivery pump 7, slide rails 902 located on opposite side walls of the chamber, mounting bases 903 slidably connected to the slide rails, a spray pipe 904 located on the mounting base, several nozzles 905 installed on the spray pipe, and a power device (not shown) for driving the mounting base to slide along the slide rails. The cleaning agent delivery pipe 901 is connected to the outlet pipe of the delivery pump 7. Since the spray pipe moves in a translational manner during the spray washing process, the cleaning agent delivery pipe 901 and the spray pipe 904 are connected by a flexible hose. Two slide rails are grouped together, with one mounting base on each slide rail, which secures the spray pipe of the spray washing device. The number of slide rail groups corresponds to the number of screens, and each screen to be processed corresponds to one set of slide rails. In this embodiment, the slide rails 902 correspond one-to-one with the side rods that fix the corresponding screens, and the two are spaced apart. By assigning one set of spray washing devices to each screen, the cleaning effect of the screens is ensured. The mounting base 903 has 2-4 spray pipes 904, spaced apart. When the mounting base moves up and down along the slide rail, multiple spray pipes simultaneously spray the screen, increasing the effective spraying area and further improving its spraying efficiency. Each spray pipe is equipped with several nozzles 905, which are positioned directly opposite the screen. Preferably, the nozzles 905 are fan-shaped, producing a fan-shaped water jet with a large spray area. More preferably, the distance between the nozzles and the screen is 5-10 cm. In this embodiment, the power unit can be a cylinder.

[0034] In this embodiment, control valves 8 are respectively installed on the pipelines connecting the text screen cleaning tank 5 and the weld resist mesh cleaning tank 6 to the delivery pump. These control valves are electrically connected to a control device, which controls their opening and closing. During operation, when the delivery pump 7 is used to deliver the text screen cleaning agent, the control valves on the pipeline connecting the weld resist mesh cleaning tank 6 and the delivery pump are closed to achieve cleaning of the text screen; when the delivery pump 7 is used to deliver the weld resist mesh cleaning agent, the control valves on the pipeline connecting the text screen cleaning tank 5 and the delivery pump are closed to achieve cleaning of the weld resist mesh.

[0035] In this embodiment, a cleaning agent recovery tank 10 is provided at the bottom of the tank body for recycling the cleaning agent and reducing the consumption of cleaning agent.

[0036] In this embodiment, the nozzle pressure is 0.1-0.3 MPa, and the cleaning time for each screen is 2-3 minutes. Compared with the traditional manual cleaning method, the amount of cleaning agent used can be reduced by about 85%.

[0037] This utility model relates to a circuit board stencil cleaning device, which can clean text stencils and solder resist stencils. The device has a compact structure and high cleaning efficiency.

[0038] The embodiments of this utility model have been described in detail above, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations made to these embodiments without departing from the principles and spirit of this utility model still fall within the protection scope of this utility model.

Claims

1. A circuit board stencil cleaning device, characterized in that, The device includes a chamber for cleaning screen printing plates, an exhaust device located in the chamber, a fixing device located in the chamber for vertically placing the screen printing plates, a text screen printing plate cleaning tank and a weld resistance screen printing plate cleaning tank located at the bottom of the chamber for holding cleaning agent, a delivery pump connected to the text screen printing plate cleaning tank and the weld resistance screen printing plate cleaning tank, and a spraying device. The spraying device includes a cleaning agent delivery pipe connected to the delivery pump, slide rails located on opposite side walls of the chamber, a mounting base slidably connected to the slide rails, a spray pipe located on the mounting base, a plurality of nozzles installed on the spray pipe, and a power device for driving the mounting base to slide along the slide rails. The nozzles are positioned directly opposite the screen printing plates, and the cleaning agent delivery pipe is connected to the spray pipe via a flexible hose.

2. The circuit board screen cleaning device according to claim 1, characterized in that, The distance between the nozzle and the screen is 5-10cm.

3. The circuit board screen cleaning device according to claim 1, characterized in that, The nozzle is a fan-shaped nozzle, and the water flow is sprayed in a fan shape.

4. The circuit board screen cleaning device according to claim 1, characterized in that, There are 2-4 spray pipes, which are spaced apart.

5. The circuit board screen cleaning device according to claim 1, characterized in that, The text screen cleaning box and the weld bead screen cleaning box are respectively equipped with control valves on the pipelines connecting to the conveying pump. The circuit board screen cleaning device also includes a control device, which is electrically connected to the control valve.

6. The circuit board screen cleaning device according to claim 1, characterized in that, The bottom of the chamber is equipped with a cleaning agent recovery tank.

7. The circuit board screen cleaning device according to claim 1, characterized in that, The chamber contains 2-4 wire mesh panels.

8. The circuit board screen cleaning device according to claim 7, characterized in that, The fixing device includes a top fixing rod located at the top of the silo body, side rods located on opposite side walls of the silo body, a plurality of position adjustment devices located on the side rods and distributed vertically, a bottom fixing rod detachably connected to the position adjustment devices and parallel to the top fixing rod, and a plurality of clamps located on the top fixing rod and the bottom fixing rod, wherein the clamps on the top fixing rod and the bottom fixing rod hold both ends of the screen.

9. The circuit board screen cleaning device according to claim 8, characterized in that, The position adjustment device consists of several mounting holes on the side rod, and the bottom fixing rod is fixed to the side rod by connecting screws at the mounting holes.

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