Plasma cleaning machine for circuit board

Abstract

The invention relates to cleaning equipment, and provides a plasma cleaning machine for a circuit board, which comprises a frame, a conveying roller frame and a piece-by-piece feeding device, the transverse moving conveying device is mounted on the frame on the two adjacent sides of the conveying roller frame; the first linear drivers are symmetrically mounted on the upper side and the lower side in the frame in pairs; the first telescopic rod is mounted on the first linear driver; the second telescopic rods are mounted on two sides of the bottom in the frame; the connecting pipe is mounted at the movable end of the second telescopic rod; the connecting square block is mounted at the top of the connecting pipe; the movable plasma cleaning bin is provided with an opening and closing structure cavity, and the two sides of the movable plasma cleaning bin are erected in the frame after being connected with the transverse conveying device; the clamping groove plates are installed on the upper side and the lower side of the movable plasma cleaning bin. A better cleaning effect is achieved through cleaning in the movable plasma cleaning bin, continuous and uninterrupted plate receiving and cleaning are achieved through cooperation of the first telescopic rod and the transverse moving conveying device, and the beneficial effect of being flexible to use is achieved.

Description

Technical Field

[0001] The invention relates to a cleaning device, in particular to a plasma cleaning machine for a circuit board. Background Art

[0002] When the circuit board needs surface treatment, a plasma cleaning machine will be used to complete the surface treatment, mainly to remove the oxide layer, oil and other impurities on the board surface. Plasma cleaning machines are divided into two types: normal pressure environment and vacuum environment. Normal pressure plasma cleaning machine has the characteristics of flexible use. In order to meet the needs of production line, normal pressure plasma cleaning machine will be used. When in use, the normal pressure plasma cleaning machine can be directly arranged at the starting point of the production line. The circuit board is fed into one end of the normal pressure plasma cleaning machine. 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 cleaning machine still has some defects. The discharge end of the atmospheric pressure plasma cleaning machine currently has two types: direct spray 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. This cleaning method cannot clean the impurities on the circuit board at one time. In the actual production process, it is often necessary to repeat the operation of the circuit board many times to achieve the expected cleaning effect. The repeated operation requires manual collection of the sheet material at the discharge port and then re-putting it into the feed port for secondary delivery. The operation is extremely inconvenient and cannot simplify the workflow. The operation process of the vacuum plasma cleaning machine is more complicated, 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 the sheet material in the vacuum chamber. When the circuit board is cleaned, it is placed in these small grids one by one. After the vacuum chamber is closed, wait for the cleaning to be completed and then the circuit board is pulled out of the small grid one by one. However, this cleaning method obviously cannot meet the production needs of the automated production line. Summary of the invention

[0004] The present invention aims to solve the technical problems existing in the above-mentioned prior art. To this end, the present invention provides a plasma cleaning machine 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 scheme, the mobile plasma cleaning chamber includes: a bottom plate; a transmission roller frame mounted on the bottom plate; a radio frequency power supply module slidably mounted on the bottom plate through a guide rod, the radio frequency power supply module and the bottom plate are closed to form a closed cavity inside, and the sheet material is placed on the transmission roller frame; a driven gear mounted on the roller shaft at the head and tail of the transmission roller frame; an intermediate gear rotatably mounted on the outer side wall of the bottom plate and meshing with the driven gear; a side wrapping plate mounted on the outer side wall of the bottom plate to cover the driven gear and the intermediate gear; a driving gear The wheels are installed on both sides of the conveying roller frame and rotate with the conveying roller frame. After the bottom plate is lifted up, the intermediate gear can be engaged with the driving gear, thereby driving the transmission roller frame to rotate; a protruding plate is protrudingly installed on the side wrapping plate, and the bottom plate is moved by being placed on the first conveyor belt or the second conveyor belt through the protruding plate; a positioning plate is symmetrically installed on the bottom of the bottom plate; a suction port is opened at the bottom of the bottom plate in the middle of the two positioning plates, and the connecting pipe is inserted into the middle of the positioning plate through the connecting block to complete the connection with the bottom plate.

[0009] As a further improvement of the scheme, it also includes: a limiting plate, which is installed above the first conveyor belt and the second conveyor belt with a gap according to the thickness of the protruding plate; the belt surface of the first conveyor belt and the second conveyor belt is provided with a tooth structure, and the protruding plate is also provided with a tooth structure that engages with the tooth structure.

[0010] As a further improvement of the solution, it also includes: limit blocks, which are arranged in groups of two and are respectively installed on both sides of the mounting plate. After the base plate is lifted to a height that allows the intermediate gear and the driving gear to mesh, the protruding plate is located between the two limit blocks.

[0011] As a further improvement of the solution, the driving roller frame, the driven gear and the intermediate gear cooperate to form a single-layer storage partition in the bottom plate, and no less than two groups of the storage partition are arranged in the bottom plate.

[0012] As a further improvement of the scheme, it also includes: a positioning pin installed on the RF power module; an entry port opened on the bottom plate, and after the RF power module and the bottom plate are closed, the positioning pin is inserted into the entry port; a latch pin is slidably penetrated on the side wrapping plate, and when the positioning pin is inserted into the entry port, it abuts against the groove of the positioning pin from the side.

[0013] As a further improvement of the solution, it also includes: a locking pressure plate, which is installed on the mounting plate and located above the first conveyor belt, and is used to contact the latch and push the latch into the groove of the positioning pin.

[0014] As a further improvement of the scheme, the sheet-by-sheet feeding device includes: a lifting device, installed on the side wall of one side of the frame; a support plate, driven and installed on the lifting device for holding the sheet material; a second linear drive, mounted on the upper part of the lifting device; a hook plate, driven and installed on the second linear drive, and the sheet material moves upward through the hook plate to push the top layer of the sheet material into the conveying roller frame.

[0015] The present invention brings the following effects: 1. The present invention achieves a better cleaning effect by placing the sheet materials to be cleaned into the mobile plasma cleaning chamber for cleaning. At the same time, the mobile plasma cleaning chamber realizes the circular movement of the mobile plasma cleaning chamber within a fixed range through the cooperation of the first telescopic rod and the transverse conveying device. The sheet materials enter from one end, and the cleaned sheet materials can be directly discharged from the other end into the production line. The sheet materials can be continuously and uninterruptedly received for cleaning, which has the characteristics of flexible use and can fully meet the use requirements.

[0016] 2. The transmission roller frame, driven gear and intermediate gear provided in the present invention cooperate to realize a freely movable mobile plasma cleaning chamber. The sheet material in the chamber can be discharged at a fixed position by means of the power of the transmission roller frame. In this way, there is no need to set an independent driving structure on the mobile plasma cleaning chamber, thereby simplifying the complexity of the equipment.

[0017] 3. The present invention can configure the interior of the mobile plasma cleaning chamber into multiple layers of storage compartments, so that a mobile plasma cleaning chamber can place multiple sheets of material at the same time, thereby improving the cleaning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a complete schematic diagram of the present invention.

[0019] Figure 2 For the present invention Figure 1 Schematic diagram from another perspective.

[0020] Figure 3 The schematic diagram of the sheet-by-sheet feeding device is hidden for the present invention.

[0021] Figure 4 For the present invention Figure 3 Partial schematic diagram.

[0022] Figure 5 The mobile plasma cleaning chamber of the present invention is Figure 3 Schematic diagram of the operation.

[0023] Figure 6 It is a schematic diagram of the conveying roller frame, driving gear and pressing roller of the present invention.

[0024] Figure 7 It is a schematic diagram of the specific structure of the transverse conveying device of the present invention.

[0025] Figure 8 It is a schematic diagram of the connection between the mobile plasma cleaning chamber and the conveying roller frame of the present invention.

[0026] Fig. 9 It is a schematic diagram of the specific structure of the mobile plasma cleaning chamber of the present invention.

[0027] Fig.10 It is a bottom schematic diagram of the bottom plate of the present invention.

[0028] Fig.11 It is a schematic diagram of the mobile plasma cleaning chamber of the present invention after being closed.

[0029] Fig.12 It is a schematic diagram of the multi-layer structure of the mobile plasma cleaning chamber of the present invention.

[0030] Fig.13 It is a schematic diagram of the position state of the protruding plate of the present invention on the first conveyor belt and the second conveyor belt.

[0031] Fig.14 It is a schematic diagram of the specific structure of the sheet-by-sheet feeding device of the present invention.

[0032] The corresponding relationship between the reference numerals and the names of the components in the accompanying drawings is as follows: 11-frame, 12-transmission roller frame, 121-driving gear, 122-pressing roller, 13-sheet feeding device, 14-transverse conveying device, 15-first linear drive, 16-mobile plasma cleaning chamber, 161-slot plate, 151-first telescopic rod, 152-second telescopic rod, 153-connecting pipe, 154-connecting block, 155-wedge block, 141-mounting plate, 142-first conveyor belt, 143-second conveyor belt, 144-limiting plate, 14 5-locking pressure plate, 146-limiting block, 162-bottom plate, 163-transmission roller frame, 164-RF 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-entry port, 172-latch pin, 131-lifting device, 132-support plate, 133-second linear drive, 134-hook plate, 300-sheet material. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It will be appreciated that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some but not all structures related to the present application are shown in the drawings. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the art without making creative work are within the scope of protection of the present application.

[0034] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] The present invention specifically discloses a plasma cleaning machine for circuit boards, such as Figure 1-Figure 14 As shown, it includes: a rectangular frame 11 surrounded by boards up and down and front and back, Figure 1 As a reference, follow Figure 3 As shown, conveying roller frames 12 are fixedly installed on the left and right sides of the frame 11, and a sheet-by-sheet feeding device 13 is fixedly installed on the right side of the frame 11. The sheet-by-sheet feeding device 13 cooperates with the conveying roller frame 12 on the right side. The sheet 300 is lifted upward by the sheet-by-sheet feeding device 13 and then pushed onto the conveying roller frame 12 one by one. Then the sheet 300 is conveyed to the designated position by the conveying roller frame 12. A transverse conveying device 14 is fixedly installed on the front and rear sides of the frame 11, and the transverse conveying device 14 is adjacent to the conveying roller frame 12.

[0036] according to Figure 3 and Figure 4 As shown, first linear drivers 15 are provided on both sides of the upper and lower parts of the frame 11, and the first linear drivers 15 are arranged in groups of two at four positions in the frame 11. A first telescopic rod 151 is installed on the first linear driver 15, and the first telescopic rod 151 is translated back and forth through the first linear driver 15. The second telescopic rod 152 is fixedly installed on both sides of the bottom of the frame 11, and a connecting pipe 153 is installed on the movable end of the second telescopic rod 152. The top of the connecting pipe 153 is connected to the connecting block 154. When in use, the connecting pipe 153 needs to be connected to the exhaust part of the vacuum equipment; a wedge block 155 is installed on the movable end of the first telescopic rod 151.

[0037] according to Figure 4 and Figure 5 As shown, a movable plasma cleaning chamber 16 is connected and erected on the transverse conveying devices 14 on both sides of the frame 11. The movable plasma cleaning chamber 16 has an opening and closing structural cavity. Specifically, the two sides of the movable plasma cleaning chamber 16 are connected to the transverse conveying devices 14 and are stably erected in the frame 11. After the movable plasma cleaning chamber 16 is moved to the left and right areas of the frame 11 by the transverse conveying device 14, it can be connected with the first telescopic rod 151. The connection method is through the slot plates 161 installed on the upper and lower sides of the movable plasma cleaning chamber 16. The wedge block 155 on the first telescopic rod 151 is transversely moved and embedded in the slot plates 161. After the movable plasma cleaning chamber 16 is adjusted to the upper and lower positions of the transverse conveying device 14 under the support of the first telescopic rod 151, it is circulated in the frame 11 through the transverse conveying device 14. When in use, the movable plasma cleaning chamber 16 is lifted to the position where it is in contact with the conveying device 14 by the first telescopic rod 151. The height of the conveying roller frame 12 is flush with that of the mobile plasma cleaning chamber 16. After the first telescopic rods 151 on the upper and lower sides pull open the mobile plasma cleaning chamber 16, the conveying roller frame 12 conveys the sheet 300 into the mobile plasma cleaning chamber 16, and then closes the mobile plasma cleaning chamber 16. The mobile plasma cleaning chamber 16 can be connected to the connecting block 154 during the movement, and is connected to the connecting pipe 153. After the connection, vacuuming begins, and then the sheet 300 inside the mobile plasma cleaning chamber 16 can be cleaned. After the cleaning is completed, the mobile plasma cleaning chamber 16 moves to the conveying roller frame 12 on the left frame 11, and the mobile plasma cleaning chamber 16 is pulled open by the first telescopic rod 151, so that the cleaned sheet 300 is discharged from the conveying roller frame 12 at this position. Among them, no less than two mobile plasma cleaning chambers 16 are arranged on the transverse conveying device 14, so that they can be used alternately to improve efficiency. Figure 5 As an example, in this embodiment, four mobile plasma cleaning chambers 16 are provided for example. The four mobile plasma cleaning chambers 16 cyclically move in the frame 11 under the cooperation of the transverse conveying device 14 and the first telescopic rod 151, which can effectively improve the cleaning efficiency of the sheet material 300.

[0038] Reference Figure 6 As shown, it also includes: a pressure roller 122 is installed on the conveying roller frame 12. After the sheet 300 falls on the conveying roller frame 12, the pressure roller 122 can press the sheet 300 tightly to prevent the sheet 300 from being offset and tilted. At the same time, after the sheet 300 is pushed from the sheet feeding device 13 to the conveying roller frame 12, the sheet 300 can be stably pulled out from the sheet feeding device 13.

[0039] Reference Figure 7As shown, the transverse conveying device 14 includes: a mounting plate 141 mounted on the frame 11 on both sides of the conveying roller frame 12, and a first conveying belt 142 and a second conveying belt 143 are respectively mounted on the mounting plate 141, and the second conveying belt 143 is located above the first conveying belt 142, and the length of the second conveying belt 143 is shorter than the first conveying belt 142. When in use, the mobile plasma cleaning chamber 16 is loaded with the sheet material 300 from the area close to the sheet feeding device 13 and falls on the first conveying belt 142, and is conveyed on the first conveying belt 142. After the sheet material 300 is cleaned, the mobile plasma cleaning chamber 16 has been It reaches the end of the first conveyor belt 142, and then lifts the mobile plasma cleaning chamber 16 through the first telescopic rod 151 to keep it flush with the conveying roller frame 12, and then discharges the sheet 300. After discharge, the mobile plasma cleaning chamber 16 continues to be lifted and raised until it is at 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 drive 15. The mobile plasma cleaning chamber 16 returns from the second conveyor belt 143 to a position close to the side of the sheet-by-sheet pushing device. In this way, the circular movement of the sheet-by-sheet pushing device in the frame 11 is realized.

[0040] Reference Figure 8-Figure 11 As shown, the mobile plasma cleaning chamber 16 includes: a bottom plate 162 and a transmission roller frame 163, the transmission roller frame 163 is mounted on the bottom plate 162, and the RF power module 164 is slidably mounted on the bottom plate 162 through a guide rod 168. After the RF power module 164 and the bottom plate 162 are closed, a closed cavity is formed inside. The sheet 300 is placed on the transmission roller frame 163 to close the RF power module 164 and the bottom plate 162. Fig. 9 As shown, a driven gear 165 is coaxially mounted on the roller shaft at the head and tail positions of the transmission roller frame 163, and an intermediate gear 166 is rotatably mounted on the outer side wall of the bottom plate 162, the intermediate gear 166 is meshed with the driven gear 165, and a side wrapping plate 167 is mounted on the outer side wall of the bottom plate 162 to cover the driven gear 165 and the intermediate gear 166; Reference Figure 6 As shown, the driving gear 121 is installed at both ends of the roller shaft at the end of the conveying roller frame 12, and the driving gear 121 rotates with the conveying roller frame 12. After the bottom plate 162 is lifted up, the intermediate gear 166 can mesh with the driving gear 121, thereby driving the transmission roller frame 163 to rotate; Reference Fig. 9 As shown, the protruding plate 169 is protrudingly mounted on the side wrapping plate 167, and the bottom plate 162 is moved by being placed on the first conveyor belt 142 or the second conveyor belt 143 through the protruding plate 169, referring to Fig.10As shown, the positioning plates 1610 are symmetrically installed at the bottom of the bottom plate 162 , and the suction port 1611 is opened at the bottom of the bottom plate 162 in the middle of the two positioning plates 1610 .

[0041] Refer to when using Fig.11 As shown, after the RF power module 164 and the base plate 162 are closed together, refer to Figure 4 and Fig.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 is conveyed, the bottom plate 162 moves and disengages from the connection with the first telescopic rod 151. During this process, the connecting tube 153 rises, so that during the movement of the bottom plate 162, the connecting block 154 will be stuck in the positioning plate 1610, and after the connection, the connecting tube 153 and the suction port 1611 of the bottom plate 162 are connected, so that the vacuum operation can be started, and the RF power supply module 164 starts to work to clean the sheet 300; wherein, a rubber ring can be provided on the connecting block 154 at the suction port 1611 to prevent air leakage to ensure sealing.

[0042] Among them, according to Fig.12 As shown, the driving roller frame 163, the driven gear 165 and the intermediate gear 166 are coordinated to form a single-layer storage compartment in the bottom plate 162, and at least two groups of the storage compartment can be set in the bottom plate 162. When two groups are set, the driving gear 121 and the intermediate gears 166 on different layers are meshed through the first telescopic rod 151 to send the sheet 300 to the driving roller frame 163 on the corresponding layer height, so that two sheets of sheet 300 can be placed in the mobile plasma cleaning chamber 16 for cleaning, so that two sheets of sheet 300 can be cleaned at one time, and this method is not limited to two layers, and multiple layers can be set, which can effectively improve the cleaning efficiency.

[0043] The cooperation of the transmission roller frame 163, the driven gear 165 and the intermediate gear 166 enables the mobile plasma cleaning chamber 16 to move freely. The sheet material 300 in the chamber can be discharged at a fixed position with the help of the power of the transmission roller frame 12. In this way, there is no need to set an independent driving structure on the mobile plasma cleaning chamber 16, which simplifies the complexity of the equipment.

[0044] Reference Fig.13As shown, it also includes: a limiting plate 144 installed on the mounting plate 141, two limiting plates 144 are provided on the mounting plate 141, and the two limiting plates 144 are respectively 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, so that the protruding plate 169 on the mobile plasma cleaning chamber 16 will not be lifted 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 a tooth structure, and the protruding plate 169 is also provided with a tooth structure that bites with the tooth structure, so that 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 bite together through the tooth structure and cooperate with the limitation of the limiting plate 144, so that when the positioning plate 1610 at the bottom of the bottom plate 162 is pushed to connect with the connecting block 154, the bottom plate 162 will not retreat.

[0045] Reference Fig.13 As shown, it also includes: two limit blocks 146 are arranged in a group, and are respectively installed on both sides of the mounting plate 141. After the bottom plate 162 is lifted to a height that enables the middle gear 166 to mesh with the driving gear 121, the protruding plate 169 is located between the two limit blocks 146. After the middle gear 166 and the driving gear 121 are meshed, 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 easy to slide during the meshing transmission of the middle gear 166 and the driving gear 121, causing the two gears to disengage from the meshing. By limiting the protruding plate 169 with the limit blocks 146, this problem can be avoided.

[0046] Reference Fig. 9 As shown, it also includes: a positioning pin 17 installed on the RF power module 164, an entrance port 171 is opened 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 port 171, the latch 172 is slidably penetrated on the side wrapping plate 167, and a spring is provided between the latch 172 and the side wrapping plate 167. After the positioning pin 17 is inserted into the entrance port 171, the latch 172 penetrates from the side and presses against the groove of the positioning pin 17 so that the positioning pin 17 cannot be pulled out, so that the RF power module 164 and the bottom plate 162 can be locked together.

[0047] Reference Fig.13As shown, it also includes: a locking pressure plate 145 installed on the mounting plate 141, and 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 latch 172 slides along the oblique edge of the locking pressure plate 145 and begins to push the latch 172 to be inserted into the groove of the positioning pin 17, so that the latch 172 is pushed against the groove of the positioning pin 17 to complete the locking. After the mobile plasma cleaning chamber 16 is separated from the first conveyor belt 142, the latch 172 is no longer in contact with the locking pressure plate 145, and the latch 172 automatically pops out, and the RF power module 164 and the bottom plate 162 can be separated.

[0048] As a further improvement of the scheme, the sheet feeding device 13 includes: a lifting device 131 installed on the side wall of one side of the frame 11, a support plate 132 driven and installed on the lifting device 131 for holding the sheet material 300, and moving up and down under the action of the lifting device 131, a second linear drive 133 is mounted on the upper part of the lifting device 131, and a hook plate 134 is driven and installed on the second linear drive 133. After the sheet material 300 is stacked on the support plate 132, the lifting device 131 is used to move the sheet material 300 upward, and the hook plate 134 pushes the top layer of the sheet material 300 onto the conveying roller frame 12, thereby pushing the sheet material 300 onto the conveying roller frame 12 one by one.

[0049] The above-mentioned embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person skilled in the art, several modifications, improvements and substitutions can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached 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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