Plasma cleaning device

Abstract

The utility model relates to a plasma cleaning device which comprises a conveying belt, a machine box without a bottom plate is arranged above the conveying belt, a feeding hole and a discharging hole are formed in the bottoms of the front side wall and the rear side wall of the machine box respectively, a plurality of plasma main machines are arranged on the top of the machine box, a plurality of plasma spray guns are arranged in the machine box, and a rotating rod is arranged in the machine box. The two ends of the rotating rod are rotationally connected with the inner walls of the left side and the right side of the machine box correspondingly, the two ends of the rotating rod are connected with connecting rods correspondingly, the bottom ends of the two connecting rods are connected with the same poke rod, a servo motor is arranged on the outer side wall of the machine box, and an output shaft of the servo motor rotationally penetrates through the side wall of the machine box and is fixedly connected with the rotating rod. When the two printed circuit boards which are overlapped are conveyed to be close to the poke rod through the conveying belt, the edge of the printed circuit board which is overlapped on the upper portion can make contact with the poke rod, the poke rod can block the printed circuit board, and the printed circuit board which is overlapped on the upper portion is separated from other flat printed circuit boards.

Description

Technical Field

[0001] This utility model relates to the field of plasma cleaning equipment technology, and specifically to a plasma cleaning device. Background Technology

[0002] With the development of electronic technology, the integration of various electronic components and chips has significantly reduced the size of electronic devices, enabling portability and other requirements. The application of PCBs (Printed Circuit Boards) is particularly prominent in this regard, as the integration of electronic circuits reduces the required circuit space for various electronic devices. The cleanliness of the PCB surface is crucial for ensuring the usability of the circuitry on it; fewer particles on the PCB result in better short-circuit and shielding performance, thus improving the overall quality of the PCB. Currently, plasma cleaning equipment is widely used for cleaning printed circuit boards.

[0003] Plasma cleaning equipment is mainly used for plasma surface activation, surface roughening, surface modification, surface etching, and surface grafting on the surface and inside holes of circuit boards to remove adhesive residue and enhance surface adhesion. In traditional plasma cleaning equipment, the printed circuit boards transported by the conveyor belt overlap, causing the lower circuit board to be blocked by the one above it. This results in the overlapping areas of the circuit boards not being cleaned, affecting cleaning efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a plasma cleaning device that solves the problem that in traditional plasma cleaning equipment, printed circuit boards may overlap during transport via a conveyor belt, resulting in the overlapping areas of the printed circuit boards not being cleaned.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A plasma cleaning device includes a conveyor belt, a baseless chassis mounted on the conveyor belt via a support frame, inlet and outlet ports on the bottom of the front and rear side walls of the chassis, a plurality of plasma generators on the top of the chassis, and a plurality of vertically oriented plasma spray guns adapted to the plasma generators inside the chassis. A horizontally oriented rotating rod is located near the inlet port inside the chassis, with both ends of the rotating rod rotatably connected to the left and right side inner walls of the chassis, and both ends of the rotating rod are connected to vertically oriented connecting rods. The bottom ends of the two connecting rods are connected to the same actuating rod. A servo motor is mounted on the outer side wall of the chassis, and the output shaft of the servo motor rotates through the side wall of the chassis and is fixedly connected to the rotating rod.

[0007] A further technical solution is that the machine housing is equipped with a mounting bracket with its two ends fixedly connected to the inner walls of its left and right sides respectively. The mounting bracket has several vertically arranged slide rails on the side near the feed hole. Each slide rail is slidably connected to each plasma spray gun through a slider. The top of the slider is connected to the same drive rod with its two ends facing the left and right sides of the machine housing respectively. Both ends of the drive rod are connected to the rotating rod through a transmission mechanism.

[0008] A further technical solution is that the transmission mechanism includes a horizontal chain and a vertical chain. On the inner walls of the left and right sides of the chassis, an upper rotating bolt and a lower rotating bolt are rotatably provided from top to bottom. An upper gear and a driven gear are fixedly provided on the outer wall of the upper rotating bolt, and a lower gear is fixedly provided on the outer wall of the lower rotating bolt. Both ends of the rotating rod are provided with driving gears. The driving gear and the driven gear located on the same side of the chassis are connected by a horizontal chain. The upper gear and the lower gear located on the same side of the chassis are connected by a vertical chain. The vertical chain includes an inner chain and an outer chain. Both ends of the drive rod are fixedly connected to the inner chain on the corresponding side.

[0009] A further technical solution is to fix a silicone layer on the outer wall of the lever.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] By setting a servo motor to drive the rotating rod, which in turn drives the actuating rod, the distance between the actuating rod and the conveyor belt can be easily controlled, making it easy to adapt to printed circuit boards of different thicknesses. When two overlapping printed circuit boards are transported by the conveyor belt to the vicinity of the actuating rod, the edge of the overlapping printed circuit board will contact the actuating rod, which will block the printed circuit board. The printed circuit board located below the overlap can pass through the gap between the actuating rod and the conveyor belt, thus detaching the overlapping printed circuit board from the other flat printed circuit boards, reducing the probability of printed circuit boards overlapping each other. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a plasma cleaning device according to the present invention.

[0013] Figure 2 This is a schematic diagram showing the disassembled structure of a plasma cleaning device according to the present invention.

[0014] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle.

[0015] Icons: 1-Conveyor belt, 2-Bracket, 3-Chassis, 4-Feed hole, 5-Plasma main unit, 6-Plasma spray gun, 7-Rotating rod, 8-Connecting rod, 9-Actuating rod, 10-Servo motor, 11-Mounting bracket, 12-Slide rail, 13-Slider, 14-Drive rod, 15-Horizontal chain, 16-Vertical chain, 17-Upper rotating bolt, 18-Lower rotating bolt, 19-Upper gear, 20-Driven gear, 21-Lower gear, 22-Driving gear, 23-Inner chain, 24-Outer chain, 26-Box door. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0017] Example 1

[0018] See Figures 1 to 3 The present invention discloses a plasma cleaning device, comprising a conveyor belt 1, a chassis 3 without a bottom plate mounted above the conveyor belt 1 via a bracket 2, an inlet hole 4 and an outlet hole respectively opened on the bottom of the front and rear side walls of the chassis 3, the inlet hole 4 and the outlet hole being used for printed circuit boards to enter and exit the chassis 3, a plurality of plasma main units 6 mounted on the top of the chassis 3, a plurality of vertically downward-facing plasma spray guns 6 adapted to the plasma main units 6 inside the chassis 3, a horizontally positioned rotating rod 7 located at one end of the chassis 3 near the inlet hole 4, the two ends of the rotating rod 7 being rotatably connected to the left and right side inner walls of the chassis 3 respectively, and both ends of the rotating rod 7 being connected to vertically downward-facing connecting rods 8, the bottom ends of the two connecting rods 8 being connected to the same actuating rod 9, a servo motor 10 mounted on the outer side wall of the chassis 3, the output shaft of the servo motor 10 rotatably passing through the side wall of the chassis 3 and being fixedly connected to the rotating rod 7.

[0019] The control box set up on one side of the conveyor belt 1 to control the operation of the plasma host 6, plasma spray gun 6 and servo motor 10, as well as the working principle of the plasma host 6 and plasma spray gun 6 are existing technologies and will not be described in detail here. It should be noted that when the connecting rod 8 is set vertically downward, the lowest side of the toggle lever 9 is in contact with the top of the conveyor belt 1.

[0020] In practical application, this solution involves obtaining the thickness of the printed circuit board to be cleaned in advance, controlling the servo motor 10 to drive the rotating rod 7 to rotate, causing the actuating rod 9 to rotate around the rotating rod 7 and deviate from the conveyor belt 1. Since the length of the connecting rod 8 is fixed, the vertical distance between the actuating rod 9 and the conveyor belt 1 changes when the actuating rod 9 rotates around the rotating rod 7. When the distance between the actuating rod and the conveyor belt 1 matches the thickness of the printed circuit board to be cleaned, allowing the printed circuit board to pass through, the servo motor 10 stops working. When two overlapping printed circuit boards are transported through the conveyor belt 1... When the circuit board approaches the lever 9, the edge of the printed circuit board overlapping above will contact the lever 9, and the lever 9 will block the printed circuit board. The printed circuit board located below the overlap can pass through the gap between the lever 9 and the conveyor belt 1, thus detaching the printed circuit board overlapping above from other flat printed circuit boards, reducing the probability of printed circuit boards overlapping each other. At the same time, by setting the servo motor 10 to drive the rotating rod 7 to rotate, which in turn drives the lever 9 to rotate, it is easy to control the distance between the lever 9 and the conveyor belt 1, thus making it easier to adapt to printed circuit boards of different thicknesses.

[0021] Example 2

[0022] Based on the foregoing embodiments, see [link to previous document]. Figure 2 , Figure 3 As shown, the housing 3 is provided with a mounting bracket 11 whose two ends are fixedly connected to the inner walls of the left and right sides respectively. The mounting bracket 11 is provided with several vertically arranged slide rails 12 on the side near the feed hole 4. Each slide rail 12 is slidably connected to each plasma spray gun 6 through a slider 13. The top of the slider 13 is connected to the same drive rod 14 with both ends facing the left and right sides of the housing 3 respectively. Both ends of the drive rod 14 are connected to the rotating rod 7 through a transmission mechanism.

[0023] See Figure 3 As shown, the transmission mechanism includes a horizontal chain 15 and a vertical chain 16. The upper rotating bolt 17 and the lower rotating bolt 18 are rotatably provided on the inner walls of the left and right sides of the housing 3 from top to bottom. The upper rotating bolt 17 has an upper gear 19 and a driven gear 20 fixed on its outer wall, and the lower rotating bolt 18 has a lower gear 21 fixed on its outer wall. Both ends of the rotating rod 7 are provided with driving gears 22. The driving gear 22 and the driven gear 20 located on the same side of the housing 3 are connected by the horizontal chain 15. The upper gear 19 and the lower gear 21 located on the same side of the housing 3 are connected by the vertical chain 16. The vertical chain 16 includes an inner chain 23 and an outer chain 24. The two ends of the drive rod 14 are fixedly connected to the inner chain 23 on the corresponding side.

[0024] In operation, the rotating rod 7 drives the drive gear 22 to rotate, which, under the transmission of the horizontal chain 15, drives the driven gear 20 to rotate, which in turn drives the upper gear 19 to rotate. The upper gear 19 drives the vertical chain 16 to rotate, and the inner chain 23 of the vertical chain 16 drives the drive rod 14 to move up or down. This causes the drive rod 14 to drive the slider 13 to move up or down along the slide rail 12, ultimately allowing the plasma spray gun 6 to move up and down. This allows for adjustment of the distance between the plasma spray gun 6 and the conveyor belt 1, facilitating the adjustment of the vertical position of the plasma spray gun 6 for printed circuit boards of different thicknesses. To avoid the plasma spray gun 6 being too close or too far from the printed circuit board, which would affect its cleaning effect, it is important to note that the appropriate size of the drive gear 22, driven gear 20, upper gear 19, and lower gear 21 can be selected through multiple adjustments so that when the rotating rod 7 rotates, the plasma spray gun 6 can achieve the effect of rising or falling under the drive of the above structure. At the same time, when the distance between the toggle lever 9 and the transmission belt 1 is increased, the transmission mechanism drives the plasma spray gun 6 to move upward, and conversely, when the distance between the toggle lever 9 and the transmission belt 1 is decreased, the transmission mechanism drives the plasma spray gun 6 to move downward.

[0025] As a preferred embodiment, a silicone layer is fixedly sleeved on the outer wall of the toggle lever 9. By setting the silicone layer, a buffer is provided for the printed circuit board, preventing the printed circuit board from directly contacting the toggle lever 9 and causing squeezing damage to the printed circuit board.

[0026] As a preferred embodiment, the front of the chassis 3 is provided with a door 26 to facilitate maintenance of the components installed inside the chassis 3.

[0027] Although the present invention has been described herein with reference to several illustrative embodiments, it should be understood that many other modifications and implementations can be devised by those skilled in the art, which will fall within the scope and spirit of the principles disclosed herein. More specifically, various variations and modifications can be made to the components and / or layout of the subject matter combination within the scope of the disclosure, drawings, and claims. Besides variations and modifications to the components and / or layout, other uses will be apparent to those skilled in the art.

Claims

1. A plasma cleaning device, comprising a conveyor belt (1), characterized in that: A chassis (3) without a bottom plate is provided above the conveyor belt (1) via a bracket (2). The bottom of the front and rear side walls of the chassis (3) are respectively provided with a feed hole (4) and a discharge hole. Several plasma hosts (5) are provided on the top of the chassis (3). Several plasma spray guns (6) are provided inside the chassis (3) and are arranged vertically downward and adapted to the plasma hosts (5). A horizontally arranged rotating rod (7) is provided at one end of the chassis (3) near the feed hole (4). The two ends of the rotating rod (7) are rotatably connected to the left and right inner walls of the chassis (3). Both ends of the rotating rod (7) are connected to vertically downward connecting rods (8). The bottom ends of the two connecting rods (8) are connected to the same actuating rod (9). A servo motor (10) is provided on the outer side wall of the chassis (3). The output shaft of the servo motor (10) rotates through the side wall of the chassis (3) and is fixedly connected to the rotating rod (7).

2. The plasma cleaning device according to claim 1, characterized in that: The housing (3) is provided with a mounting bracket (11) with its two ends fixedly connected to the inner walls of its left and right sides respectively. The mounting bracket (11) is provided with several vertically arranged slide rails (12) on the side near the feed hole (4). Each slide rail (12) is slidably connected to each plasma spray gun (6) through a slider (13). The top of the slider (13) is connected to the same drive rod (14) with its two ends facing the left and right sides of the housing (3) respectively. Both ends of the drive rod (14) are connected to the rotating rod (7) through a transmission mechanism.

3. The plasma cleaning device according to claim 2, characterized in that: The transmission mechanism includes a horizontal chain (15) and a vertical chain (16). The upper rotating bolt (17) and the lower rotating bolt (18) are rotatably provided on the inner walls of the left and right sides of the housing (3) from top to bottom. The upper rotating bolt (17) is fixedly provided with an upper gear (19) and a driven gear (20) on its outer wall. The lower rotating bolt (18) is fixedly provided with a lower gear (21) on its outer wall. Both ends of the rotating rod (7) are provided with driving gears (22). The driving gear (22) and the driven gear (20) located on the same side of the housing (3) are connected by the horizontal chain (15). The upper gear (19) and the lower gear (21) located on the same side of the housing (3) are connected by the vertical chain (16). The vertical chain (16) includes an inner chain (23) and an outer chain (24). Both ends of the drive rod (14) are fixedly connected to the inner chain (23) on the corresponding side.

4. The plasma cleaning device according to claim 1, characterized in that: A silicone layer is fixedly sleeved on the outer wall of the lever (9).

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