A plasma cleaner for circuit boards

Abstract

The present invention relates to a cleaning device, and provides a plasma cleaner for a circuit board, comprising: a frame, a conveying roller rack and a sheet-by-sheet feeding device; a transverse conveying device installed on the frames on the adjacent two sides of the conveying roller rack; first linear drivers, each group of two being symmetrically installed on the upper and lower sides inside the frame; first telescopic rods installed on the first linear drivers; second telescopic rods installed on both sides of the inner bottom of the frame; connecting pipes installed on the movable ends of the second telescopic rods; connecting blocks installed on the tops of the connecting pipes; a movable plasma cleaning chamber, which has an opening and closing structure cavity and is connected to the transverse conveying device on both sides and then erected inside the frame; and clamping groove plates installed on the upper and lower sides of the movable plasma cleaning chamber. The present invention realizes a better cleaning effect through cleaning inside the movable plasma cleaning chamber, and realizes continuous and uninterrupted receiving of sheet materials for cleaning through the cooperation of the first telescopic rods and the transverse conveying device, and has the characteristics of flexible use.

Description

Technical Field

[0001] The present invention relates to a cleaning device, and more particularly, to a plasma cleaner for circuit boards. Background Art

[0002] When surface treatment is required for circuit boards, a plasma cleaner is used to complete the surface treatment, mainly to remove the oxide layer, oil stains and other impurities on the board surface. The plasma cleaner is divided into two types: atmospheric pressure environment and vacuum environment. The atmospheric pressure plasma cleaner has the characteristic of flexible use. In order to meet the production needs of the production line, an atmospheric pressure plasma cleaner is used. During use, the atmospheric pressure plasma cleaner can be directly arranged at the starting point of the production line. The circuit board is fed in from one end of the atmospheric pressure plasma cleaner. After the circuit board is translated through the discharge area to complete the cleaning, it can directly enter the production line for subsequent processing operations.

[0003] However, in actual use, the atmospheric pressure plasma cleaner still has some defects. At present, there are two types of discharge ends for the atmospheric pressure plasma cleaner: direct injection type and rotary type. When the circuit board passes through the position of the discharge end, the discharge end needs to sweep back and forth across the surface of the circuit board to complete the cleaning of its surface. Such a cleaning method cannot clean the impurities on the circuit board at one time. In the actual production process, it is often necessary to perform multiple repeated operations on the circuit board to achieve the desired cleaning effect. And this repeated operation requires manual collection of the board materials at the discharge port and then re-investment into the feed port for secondary feeding, which is extremely inconvenient and cannot simplify the work process; while the operation process of the vacuum plasma cleaner is more troublesome, but because it is carried out in a vacuum environment, the cleaning of the circuit board is more comprehensive. There are multiple small grids for placing board materials at intervals in the vacuum chamber. When the circuit board is cleaned, it is placed one by one in these small grids. After the vacuum chamber is closed, wait for the cleaning to be completed and then the circuit board is taken out one by one from the small grids. However, such a cleaning method obviously cannot meet the production requirements of the automated production line. Summary of the Invention

[0004] The present invention aims to solve the above-mentioned technical problems existing in the prior art. For this purpose, the present invention provides a plasma cleaner for circuit boards.

[0005] To achieve the above-mentioned purpose, the present invention provides a plasma cleaning machine for circuit boards, comprising: a frame; a conveying roller frame installed on both sides of the frame; a sheet-by-sheet feeding device installed on one side of the frame and cooperating with the conveying roller frame on the side, and the sheet materials pushed one by one are transmitted by the conveying roller frame; a transverse conveying device installed on the frame on the adjacent two sides of the conveying roller frame; a first linear drive, two by two, symmetrically installed on the upper and lower sides of the frame; a first telescopic rod installed on the first linear drive; a second telescopic rod installed on both sides of the bottom of the frame; a connecting pipe installed on the movable end of the second telescopic rod; a connecting block installed on the top of the connecting pipe; a wedge block installed on the movable end of the first telescopic rod; a mobile plasma cleaning chamber, which has an opening and closing structure cavity, The two sides of the mobile plasma cleaning chamber are connected to the transverse conveying device and then erected in the frame, and after adjusting the upper and lower positions under the support of the first telescopic rod, the mobile plasma cleaning chamber is cyclically moved in the frame. The mobile plasma cleaning chamber is provided with no less than two slot plates installed on the upper and lower sides of the mobile plasma cleaning chamber. After the mobile plasma cleaning chamber moves to the fixed area, it can be engaged and connected with the wedge block through the slot plate, and the internal chamber is opened by pulling the first telescopic rods on the upper and lower sides, so that the sheet material entering from the conveying roller frame can enter the opened mobile plasma cleaning chamber, and then the mobile plasma cleaning chamber is driven to the position of the connecting pipe, and is connected to the mobile plasma cleaning chamber through the connecting block for vacuuming.

[0006] As a further improvement of the solution, it also includes: a pressure roller, installed on the conveying roller frame, used to cooperate with the conveying roller frame to press the sheet material for conveying.

[0007] As a further improvement of the scheme, the transverse conveying device includes: a mounting plate, mounted on the frame on both adjacent sides of the conveying roller frame; a first conveyor belt, mounted on the mounting plate; a second conveyor belt, mounted on the mounting plate, the second conveyor belt being located above the first conveyor belt and being shorter than the first conveyor belt to allow the mobile plasma cleaning chamber to be lifted from the first conveyor belt and moved to the second conveyor belt without obstruction.

[0008] As a further improvement of the solution, the mobile plasma cleaning chamber includes: a bottom plate; a driving roller rack installed on the bottom plate; a radio frequency power supply module slidably installed on the bottom plate through a guiding rod. After the radio frequency power supply module and the bottom plate are closed, a sealed cavity is formed inside. The sheet material is placed on the driving roller rack; driven gears installed on the roller shafts at both ends of the driving roller rack; an intermediate gear rotatably installed on the outer side wall of the bottom plate and meshing with the driven gears; side wrapping plates installed on the outer side wall of the bottom plate to cover the driven gears and the intermediate gear; driving gears installed on both sides of the conveying roller rack and rotating with the conveying roller rack. After the bottom plate is lifted, the intermediate gear can be engaged with the driving gear, thereby driving the driving roller rack to rotate; a protruding plate protruding and installed on the side wrapping plate. The bottom plate is moved by resting on the first conveyor belt or the second conveyor belt through the protruding plate; positioning plates symmetrically installed at the bottom of the bottom plate; a suction port opened at the bottom of the bottom plate between the two positioning plates. The connecting pipe is connected to the bottom plate through the connecting square block being clamped between the positioning plates.

[0009] As a further improvement of the solution, it further includes: a limiting plate installed above the first conveyor belt and the second conveyor belt with a gap according to the thickness of the protruding plate; tooth structures are provided on the belt surfaces of the first conveyor belt and the second conveyor belt, and the protruding plate is also provided with tooth structures that engage with the tooth structures.

[0010] As a further improvement of the solution, it further includes: limiting blocks, in pairs of two, respectively installed on both sides of the mounting plate. After the bottom plate is lifted to a height where the intermediate gear and the driving gear can be engaged, the protruding plate is located between the two limiting blocks.

[0011] As a further improvement of the solution, the cooperation of the driving roller rack, the driven gears and the intermediate gear forms a single-layer storage compartment inside the bottom plate, and there are at least two groups of the storage compartments arranged inside the bottom plate.

[0012] As a further improvement of the solution, it further includes: a positioning pin installed on the radio frequency power supply module; an access opening opened on the bottom plate. After the radio frequency power supply module and the bottom plate are closed, the positioning pin is inserted into the access opening; a bolt slidably passing through the side wrapping plate and pressing against the groove of the positioning pin from the side when the positioning pin is inserted into the access opening.

[0013] As a further improvement of the solution, it further includes: a locking pressing plate installed on the mounting plate and located above the first conveyor belt, used to contact the bolt and push the bolt to press against the groove of the positioning pin.

[0014] As a further improvement of the solution, the sheet-by-sheet feeding device includes: a lifting device installed on the side wall of one side of the frame; a pallet, which is driven and installed on the lifting device for placing the sheet material; a second linear driver erected above the lifting device; and a hook plate, which is driven and installed on the second linear driver. When the sheet material moves upward, the topmost sheet material is pushed by the hook plate into the conveyor roller rack.

[0015] The present invention brings the following effects:

[0016] 1. By placing the sheet material to be cleaned into the mobile plasma cleaning chamber for cleaning, the present invention achieves a better cleaning effect. At the same time, through the cooperation of the first telescopic rod and the transverse conveying device, the mobile plasma cleaning chamber realizes cyclic movement within a fixed range. The sheet material enters from one end, and the cleaned sheet material can be directly discharged from the other end into the production line, enabling continuous and uninterrupted reception of sheet materials for cleaning. It has the characteristics of flexible use and can fully meet the usage requirements.

[0017] 2. The cooperation of the transmission roller rack, driven gear, and intermediate gear provided in the present invention enables the mobile plasma cleaning chamber that can move freely to discharge the sheet material in the chamber with the power on the conveyor roller rack at a fixed position, eliminating the need to set up an independent drive structure on the mobile plasma cleaning chamber and simplifying the complexity of the equipment.

[0018] 3. The present invention can set multiple storage compartments inside the mobile plasma cleaning chamber, enabling multiple sheet materials to be placed in one mobile plasma cleaning chamber at the same time, thereby improving the cleaning efficiency. Description of the Drawings

[0019] Figure 1 It is a complete schematic diagram of the present invention.

[0020] Figure 2 It is for the present invention Figure 1 schematic diagram from another perspective.

[0021] Figure 3 It is a schematic diagram of the present invention with the sheet-by-sheet feeding device hidden.

[0022] Figure 4 It is for the present invention Figure 3 partial schematic diagram.

[0023] Figure 5 It is a schematic diagram of the mobile plasma cleaning chamber of the present invention operating in Figure 3 ...

[0024] Figure 6 It is a schematic diagram of the conveyor roller rack, driving gear, and pressing roller of the present invention.

[0025] Figure 7 Schematic diagram of the specific structure of the crosswise conveying device of the present invention.

[0026] Figure 8 Schematic diagram of the connection between the mobile plasma cleaning chamber and the conveying roller frame of the present invention.

[0027] Figure 9 Schematic diagram of the specific structure of the mobile plasma cleaning chamber of the present invention.

[0028] Figure 10 Schematic diagram of the bottom of the bottom plate of the present invention.

[0029] Figure 11 Schematic diagram after the mobile plasma cleaning chamber of the present invention is closed.

[0030] Figure 12 Schematic diagram of the multi-layer structure of the mobile plasma cleaning chamber of the present invention.

[0031] Figure 13 Schematic diagram of the position state of the protruding plate on the first conveyor belt and the second conveyor belt of the present invention.

[0032] Figure 14 Schematic diagram of the specific structure of the sheet-by-sheet feeding device of the present invention.

[0033] Among them, the corresponding relationship between the reference numerals in the drawings and the names of the respective components is as follows:

[0034] 11 - Frame, 12 - Conveying roller frame, 121 - Driving gear, 122 - Pressing roller, 13 - Sheet-by-sheet feeding device, 14 - Crosswise conveying device, 15 - First linear driver, 16 - Mobile plasma cleaning chamber, 161 - Card slot plate, 151 - First telescopic rod, 152 - Second telescopic rod, 153 - Connecting pipe, 154 - Connecting square, 155 - Wedge block, 141 - Mounting plate, 142 - First conveyor belt, 143 - Second conveyor belt, 144 - Limiting plate, 145 - Locking pressing plate, 146 - Limiting block, 162 - Bottom plate, 163 - Driving roller frame, 164 - Radio frequency power supply module, 165 - Driven gear, 166 - Intermediate gear, 167 - Side wrapping plate, 168 - Guide rod, 169 - Protruding plate, 1610 - Positioning plate, 1611 - Suction port, 17 - Positioning pin, 171 - Inlet, 172 - Plug pin, 131 - Lifting device, 132 - Support plate, 133 - Second linear driver, 134 - Hook plate, 300 - Sheet material. Detailed implementation manner

[0035] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. It can be understood that the specific embodiments described herein are only used to explain the present application, rather than limiting the present application. In addition, it should be noted that for the convenience of description, only the parts related to the present application rather than all the structures are shown in the accompanying drawings. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present application.

[0036] In the description of the present application, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0037] The present invention specifically discloses a plasma cleaning machine for a circuit board, as Figures 1 - 14 shown, including: a frame 11 surrounded by boards in the up-down, front-back directions to form a rectangle. Taking Figure 1 as the direction reference, as shown in Figure 3 , on both the left and right sides of the frame 11, conveying roller racks 12 are fixedly installed, and on the right side of the frame 11, a sheet-by-sheet feeding device 13 is fixedly installed. The sheet-by-sheet feeding device 13 cooperates with the conveying roller rack 12 on the right side. After the sheet-by-sheet feeding device 13 lifts the sheet material 300 upward, the sheet material 300 is pushed onto the conveying roller rack 12 one by one, and then the conveying roller rack 12 conveys the sheet material 300 to a designated position. On the front and back sides of the frame 11, a transverse transfer device 14 is fixedly installed, and the transverse transfer device 14 is adjacent to the conveying roller rack 12.

[0038] According to Figure 3 and Figure 4 shown, on both sides of the upper and lower parts of the frame 11, first linear drivers 15 are provided, and the first linear drivers 15 are arranged in pairs at four positions inside the frame 11. A first telescopic rod 151 is installed on the first linear driver 15, and the first telescopic rod 151 realizes reciprocating translation through the first linear driver 15. Second telescopic rods 152 are fixedly installed on both sides of the inner bottom of the frame 11, a connecting pipe 153 is installed on the movable end of the second telescopic rod 152, and the top of the connecting pipe 153 is connected to a connecting block 154. During use, the connecting pipe 153 needs to be connected to the air extraction part of a vacuum extraction device; a wedge block 155 is installed on the movable end of the first telescopic rod 151.

[0039] According to Figure 4 and Figure 5 As shown, on the transverse conveying devices 14 on both sides of the frame 11, a movable plasma cleaning chamber 16 is jointly connected and erected. The movable plasma cleaning chamber 16 has an opening and closing structural cavity. Specifically, after the two sides of the movable plasma cleaning chamber 16 are connected to the transverse conveying devices 14, it is stably erected within the frame 11. After the movable plasma cleaning chamber 16 is moved to the areas on the left and right sides of the frame 11 through the transverse conveying devices 14, it can be cooperatively connected with the first telescopic rod 151. The connection method is through the clamping groove plates 161 installed on the upper and lower sides of the movable plasma cleaning chamber 16. The wedge blocks 155 on the first telescopic rod 151 are horizontally embedded into the clamping groove plates 161. After the position of the movable plasma cleaning chamber 16 above and below the transverse conveying devices 14 is adjusted under the lifting of the first telescopic rod 151, it then makes a cyclic movement within the frame 11 through the transverse conveying devices 14. When in use, the movable plasma cleaning chamber 16 is lifted by the first telescopic rod 151 to a height flush with the conveying roller rack 12. After the first telescopic rods 151 on the upper and lower sides pull the movable plasma cleaning chamber 16 apart, the conveying roller rack 12 conveys the sheet material 300 into the movable plasma cleaning chamber 16. Subsequently, the movable plasma cleaning chamber 16 is closed. During the movement of the movable plasma cleaning chamber 16, it can be connected to the connecting square block 154 and thus communicated with the connecting pipe 153. After being communicated, vacuum pumping starts, and then the sheet material 300 inside the movable plasma cleaning chamber 16 can be cleaned. After the cleaning is completed, the movable plasma cleaning chamber 16 moves to the conveying roller rack 12 on the left side frame 11, and the movable plasma cleaning chamber 16 is pulled apart by the first telescopic rod 151, so that the cleaned sheet material 300 is discharged from the conveying roller rack 12 at this position. Among them, at least two movable plasma cleaning chambers 16 are provided on the transverse conveying devices 14, so that they can be alternately used to improve the efficiency. Referring to Figure 5 the example of

[0040] Referring to Figure 6 As shown, it further includes: a pressing roller 122 is installed on the conveying roller rack 12. After the sheet material 300 falls on the conveying roller rack 12, the pressing roller 122 can tightly press the sheet material 300, thereby preventing the sheet material 300 from shifting and warping. At the same time, after the sheet material 300 is pushed into the conveying roller rack 12 from the sheet-by-sheet feeding device 13, the sheet material 300 can be stably withdrawn from the sheet-by-sheet feeding device 13.

[0041] Referring to Figure 7As shown in the figure, the transverse transfer device 14 includes: mounting plates 141 mounted on the frames 11 on the adjacent two sides of the transfer roller rack 12. A first conveyor belt 142 and a second conveyor belt 143 are respectively mounted on the mounting plates 141. The second conveyor belt 143 is located above the first conveyor belt 142, and the length of the second conveyor belt 143 is shorter than that of the first conveyor belt 142. During use, after the mobile plasma cleaning chamber 16 is loaded with the sheet material 300 from the area close to the sheet-by-sheet feeding device 13, it lands on the first conveyor belt 142 and is conveyed on the first conveyor belt 142. After the sheet material 300 is cleaned, the mobile plasma cleaning chamber 16 has reached the end of the first conveyor belt 142. Subsequently, the mobile plasma cleaning chamber 16 is lifted by the first telescopic rod 151 and kept flush with the transfer roller rack 12, and then the sheet material 300 is discharged. After the discharge, the mobile plasma cleaning chamber 16 is continuously lifted until it reaches the height of the second conveyor belt 143, and the lifted mobile plasma cleaning chamber 16 is placed on the second conveyor belt 143 through the first linear actuator 15. The mobile plasma cleaning chamber 16 returns to the position close to the sheet-by-sheet pushing device side again from the second conveyor belt 143. In this way, the sheet-by-sheet pushing device realizes cyclic movement within the frame 11.

[0042] Referring to Figures 8 - 11 As shown in the figure, the mobile plasma cleaning chamber 16 includes: a bottom plate 162 and a drive roller rack 163. The drive roller rack 163 is mounted on the bottom plate 162. The radio frequency power supply module 164 is slidably mounted on the bottom plate 162 through a guide rod 168. After the radio frequency power supply module 164 is closed with the bottom plate 162, a sealed cavity is formed inside. The sheet material 300 can be placed on the drive roller rack 163 to close the radio frequency power supply module 164 with the bottom plate 162. Referring to Figure 9 As shown in the figure, driven gears 165 are coaxially mounted on the roller shafts at the head and tail positions of the drive roller rack 163. An intermediate gear 166 is rotatably mounted on the outer side wall of the bottom plate 162. The intermediate gear 166 meshes with the driven gears 165. Side wrapping plates 167 are mounted on the outer side wall of the bottom plate 162 to cover the driven gears 165 and the intermediate gear 166;

[0043] Referring to Figure 6 As shown in the figure, driving gears 121 are mounted at both ends of the roller shaft at the end of the transfer roller rack 12. The driving gears 121 rotate as the transfer roller rack 12 rotates. After the bottom plate 162 is lifted, the intermediate gear 166 can be engaged with the driving gears 121, thereby driving the drive roller rack 163 to rotate;

[0044] Referring to Figure 9 As shown in the figure, a protruding plate 169 is prominently mounted on the side wrapping plate 167. The bottom plate 162 moves by resting on the first conveyor belt 142 or the second conveyor belt 143 through the protruding plate 169. Referring to Figure 10As shown, the positioning plates 1610 are symmetrically installed at the bottom of the bottom plate 162, and the suction ports 1611 are opened at the bottom of the bottom plate 162 at the middle position between the two positioning plates 1610.

[0045] During use, referring to Figure 11 as shown, after the RF power supply module 164 and the bottom plate 162 are closed to each other, referring to Figure 4 and Figure 10 as shown, the bottom plate 162 will be placed on the first conveyor belt 142 through the first telescopic push rod. As the first conveyor belt 142 conveys, the bottom plate 162 moves and disconnects from the first telescopic rod 151. During this process, the connecting pipe 153 rises. In this way, during the movement of the bottom plate 162, the connecting block 154 will be stuck into the positioning plate 1610, and after connection, the connecting pipe 153 and the suction port 1611 of the bottom plate 162 will be communicated, so that the vacuum pumping operation can be started, and the RF power supply module 164 can start working to clean the sheet material 300; among them, a rubber ring can be arranged on the connecting block 154 at the suction port 1611 to prevent air leakage to ensure the sealing performance.

[0046] Among them, according to Figure 12 as shown, considering the cooperation of the transmission roller rack 163, the driven gear 165 and the intermediate gear 166 as a storage compartment with a single-layer structure formed inside the bottom plate 162, then at least two groups of such storage compartments can be arranged inside the bottom plate 162. After two groups are arranged, the driving gear 121 is engaged with the intermediate gears 166 on different layers through the first telescopic rod 151 to send the sheet material 300 to the transmission roller rack 163 on the corresponding layer height. Thus, two sheet materials 300 can be placed in the mobile plasma cleaning chamber 16 for cleaning, so that two sheet materials 300 can be cleaned at one time, and this method is not limited to two layers and can be arranged in multiple layers, and this method can effectively improve the cleaning efficiency.

[0047] The cooperation of the transmission roller rack 163, the driven gear 165 and the intermediate gear 166 can enable the mobile plasma cleaning chamber 16 capable of free movement to discharge the sheet material 300 in the chamber by means of the power on the transmission roller rack 12 at a fixed position, so that there is no need to set an independent driving structure on the mobile plasma cleaning chamber 16, simplifying the complexity of the equipment.

[0048] Referring to Figure 13As shown in the figure, it further includes: a limiting plate 144 installed on the mounting plate 141. There are two limiting plates 144 on the mounting plate 141, and the two are respectively installed above the first conveyor belt 142 and the second conveyor belt 143 with a gap left according to the thickness of the protruding plate 169. In this way, the protruding plate 169 on the mobile plasma cleaning chamber 16 will not tilt during the movement on the first conveyor belt 142 or the second conveyor belt 143; wherein, the belt surfaces of the first conveyor belt 142 and the second conveyor belt 143 are provided with tooth structures, and the protruding plate 169 is also provided with tooth structures that engage with the tooth structures. Therefore, after the protruding plate 169 is placed on the belt surfaces of the first conveyor belt 142 and the second conveyor belt 143, they will be engaged together through the tooth structures and cooperate with the limitation of the limiting plate 144. In this way, when the positioning plate 1610 at the bottom of the bottom plate 162 is connected to the connecting square 154, the bottom plate 162 will not move backward.

[0049] Refer to Figure 13 As shown in the figure, it further includes: the limiting blocks 146 are grouped in pairs of two and are respectively installed on both sides of the mounting plate 141. After the bottom plate 162 is lifted to a height where the intermediate gear 166 and the driving gear 121 are engaged, the protruding plate 169 is located between the two limiting blocks 146. After the intermediate gear 166 and the driving gear 121 are engaged, when the protruding plate 169 is not in contact with the first conveyor belt 142 or the second conveyor belt 143, the bottom plate 162 is likely to slide during the meshing transmission of the intermediate gear 166 and the driving gear 121, resulting in the disengagement of the two gears. By limiting the protruding plate 169 with the limiting blocks 146, this problem can be avoided.

[0050] Refer to Figure 9 As shown in the figure, it further includes: a positioning pin 17 installed on the RF power supply module 164. An inlet 171 is opened on the bottom plate 162. After the RF power supply module 164 and the bottom plate 162 are closed, the positioning pin 17 is inserted into the inlet 171. A plug pin 172 slides through the side wrapping plate 167, and a spring is provided between the plug pin 172 and the side wrapping plate 167. After the positioning pin 17 is inserted into the inlet 171, the plug pin 172 penetrates from the side and abuts against the groove of the positioning pin 17, making the positioning pin 17 unable to be pulled out, so that the RF power supply module 164 and the bottom plate 162 can be locked together.

[0051] Refer to Figure 13As shown in the figure, it further includes a locking pressure plate 145 installed on the mounting plate 141. The locking pressure plate 145 is located above the first conveyor belt 142. When the mobile plasma cleaning chamber 16 moves on the first conveyor belt 142, the bolt 172 slides along the inclined edge of the locking pressure plate 145 and starts to push the bolt 172 into the groove of the positioning pin 17, so that the bolt 172 is pushed against the groove of the positioning pin 17 to complete the locking. After the mobile plasma cleaning chamber 16 disengages from the first conveyor belt 142, the bolt 172 no longer contacts the locking pressure plate 145, and the bolt 172 automatically pops out, and the radio frequency power supply module 164 and the bottom plate 162 can be separated.

[0052] As a further improvement of the solution, the sheet feeding device 13 includes: a lifting device 131 installed on the side wall of one side of the frame 11. The pallet 132 is driven to be installed on the lifting device 131 for placing the sheet material 300, and moves in the up and down direction under the action of the lifting device 131. The second linear driver 133 is installed on the upper part of the lifting device 131. The hook plate 134 is driven to be installed on the second linear driver 133. After the sheet materials 300 are stacked on the pallet 132, the sheet materials 300 are lifted by the lifting device 131, and the hook plate 134 pushes the topmost sheet material 300 into the conveyor roller frame 12, so as to push the sheet materials 300 into the conveyor roller frame 12 one by one.

[0053] The above embodiments only represent the preferred embodiments of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations, improvements and substitutions can be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the appended claims.

Claims

1. A plasma cleaning machine for a circuit board, comprising: A frame (11); a conveying roller frame (12) mounted on both sides of the frame (11); The sheet-by-sheet feeding device (13) is installed on one side of the frame (11) and cooperates with the conveying roller frame (12) on the side, and the sheet materials (300) pushed one by one are transmitted by the conveying roller frame (12); characterized in that it also includes: A transverse conveying device (14) is mounted on the frame (11) on two adjacent sides of the conveying roller frame (12); first linear drivers (15) are symmetrically mounted on the upper and lower sides of the frame (11) in groups of two; a first telescopic rod (151) is mounted on the first linear driver (15); a second telescopic rod (152) is mounted on both sides of the bottom of the frame (11); a connecting pipe (153) is mounted on the movable end of the second telescopic rod (152); a connecting block (154) is mounted on the top of the connecting pipe (153); a wedge block (155) is mounted on the movable end of the first telescopic rod (151); a mobile plasma cleaning chamber (16) having an openable and closable structural cavity, wherein the two sides of the mobile plasma cleaning chamber (16) are connected to the transverse conveying device (14) and are erected in the frame (11), and are connected to the first telescopic rod (151) ) is lifted and adjusted to move in a circular motion within the frame (11); at least two movable plasma cleaning chambers (16) are arranged on the transverse conveying device (14); a slot plate (161) is installed on the upper and lower sides of the movable plasma cleaning chamber (16); after the movable plasma cleaning chamber (16) is moved to the fixed area, it can be engaged and connected with the wedge block (155) through the slot plate (161), and the internal chamber is opened by pulling the first telescopic rods (151) on the upper and lower sides, so that the sheet material (300) entering from the conveying roller frame (12) can enter the opened movable plasma cleaning chamber (16), and then the movable plasma cleaning chamber (16) is driven to the position of the connecting pipe (153), and is connected to the movable plasma cleaning chamber (16) through the connecting block (154) for vacuuming.

2. The plasma cleaning machine for circuit boards according to claim 1, characterized in that: Also includes: A pressing roller (122) is mounted on the conveying roller frame (12) and is used to cooperate with the conveying roller frame (12) to press the sheet material (300) for conveying.

3. The plasma cleaning machine for circuit boards according to claim 2, characterized in that: The transverse conveying device (14) comprises: a mounting plate (141) mounted on the frame (11) on two adjacent sides of the conveying roller frame (12); a first conveyor belt (142) mounted on the mounting plate (141); and a second conveyor belt (143) mounted on the mounting plate (141), wherein the second conveyor belt (143) is located above the first conveyor belt (142) and is shorter than the first conveyor belt (142) to allow the mobile plasma cleaning chamber (16) to be lifted and moved from the first conveyor belt (142) to the second conveyor belt (143) without obstruction.

4. The plasma cleaning machine for circuit boards according to claim 3, characterized in that: The mobile plasma cleaning chamber (16) comprises: a bottom plate (162); a transmission roller frame (163) mounted on the bottom plate (162); a radio frequency power supply module (164) slidably mounted on the bottom plate (162) via a guide rod (168); a closed cavity is formed inside the radio frequency power supply module (164) and the bottom plate (162) when closed; a sheet material (300) is placed on the transmission roller frame (163); a driven gear (165) mounted on roller shafts at the head and tail of the transmission roller frame (163); an intermediate gear (166) rotatably mounted on the outer side wall of the bottom plate (162) and meshing with the driven gear (165); a side wrapping plate (167) mounted on the outer side wall of the bottom plate (162) and used to cover the driven gear (165) and the intermediate gear (166); a driving gear (121) mounted on the The two sides of the conveying roller frame (12) rotate with the rotation of the conveying roller frame (12), and the bottom plate (162) can make the intermediate gear (166) mesh with the driving gear (121) after being lifted and raised, thereby driving the transmission roller frame (163) to rotate; the protruding plate (169) is protrudingly installed on the side wrapping plate (167), and the bottom plate (162) is moved on the first conveyor belt (142) or the second conveyor belt (143) through the protruding plate (169); the positioning plate (1610) is symmetrically installed at the bottom of the bottom plate (162); the suction port (1611) is opened at the bottom of the bottom plate (162) in the middle of the two positioning plates (1610), and the connecting pipe (153) is inserted into the middle of the positioning plate (1610) through the connecting block (154) to complete the connection with the bottom plate (162).

5. The plasma cleaning machine for circuit boards according to claim 4, characterized in that: Also includes: The limiting plate (144) is installed above the first conveyor belt (142) and the second conveyor belt (143) with a gap according to the thickness of the protruding plate (169); the belt surfaces of the first conveyor belt (142) and the second conveyor belt (143) are provided with a tooth structure, and the protruding plate (169) is also provided with a tooth structure that engages with the tooth structure.

6. The plasma cleaning machine for circuit boards according to claim 5, characterized in that: Also includes: The limit blocks (146) are arranged in groups of two and are respectively installed on both sides of the mounting plate (141); after the bottom plate (162) is lifted to a height enabling the intermediate gear (166) and the driving gear (121) to mesh, the protruding plate (169) is located between the two limit blocks (146).

7. The plasma cleaning machine for circuit boards according to any one of claims 4 to 6, characterized in that: The driving roller frame (163), the driven gear (165) and the intermediate gear (166) cooperate to form a single-layer storage compartment in the bottom plate (162), and no less than two groups of the storage compartment are provided in the bottom plate (162).

8. The plasma cleaning machine for circuit boards according to claim 7, characterized in that: Also includes: A positioning pin (17) is mounted on the RF power module (164); an entrance (171) is provided on the bottom plate (162); after the RF power module (164) and the bottom plate (162) are closed, the positioning pin (17) is inserted into the entrance (171); a latch (172) is slidably inserted into the side wrapping plate (167) and abuts against a groove of the positioning pin (17) from the side when the positioning pin (17) is inserted into the entrance (171).

9. The plasma cleaning machine for circuit boards according to claim 8, characterized in that: Also includes: A locking pressure plate (145) is mounted on the mounting plate (141) and is located above the first conveyor belt (142), and is used to contact the latch pin (172) and push the latch pin (172) into the groove of the positioning pin (17).

10. The plasma cleaning machine for circuit boards according to claim 9, characterized in that: The sheet-by-sheet feeding device (13) comprises: a lifting device (131) mounted on a side wall of one side of the frame (11); a support plate (132) driven and mounted on the lifting device (131) for supporting the sheet material (300); a second linear drive (133) mounted on the upper part of the lifting device (131); and a hook plate (134) driven and mounted on the second linear drive (133), wherein the sheet material (300) moves upward through the hook plate (134) to push the top sheet material (300) onto the conveying roller frame (12).

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