Circuit board carbon oil hole filling device

Abstract

The application discloses a circuit board carbon oil hole filling device, which comprises a mounting frame, an air disc and a blowing and sucking assembly. The air disc defines an air passing space, and the air passing space forms an air passing hole on the top wall of the air disc. The blowing and sucking assembly comprises a fan and a reversing piece. The reversing piece comprises a fixed plate, a reversing plate and a first driving piece. The reversing plate is slidingly arranged on the fixed plate. The fixed plate is provided with a first air outlet which is communicated with the air passing space. The reversing plate is provided with a first air inlet which is communicated with the air outlet end of the fan and a second air inlet which is communicated with the air inlet end of the fan. The first driving piece is connected with the reversing plate. The first driving piece is used for driving the reversing plate to move relative to the first air outlet between a first position and a second position. In the first position, the second air inlet and the first air outlet are opposite and communicated. In the second position, the first air inlet and the first air outlet are opposite and communicated. The application can avoid the fact that the suction force received by each region of the plate material is inconsistent, and the carbon oil can uniformly penetrate into the lower end surface of the plate material.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of circuit board manufacturing, and particularly relates to a circuit board carbon oil hole filling device. BACKGROUND

[0002] In the related art, the circuit board is placed on the air disc of the circuit board carbon oil hole filling device, the top surface of the circuit board is coated with carbon oil, and the fan in the circuit board carbon oil hole filling device sucks the air disc to form a negative pressure in the air disc. Under the action of air pressure, the carbon oil penetrates to the bottom surface of the circuit board through the prefabricated holes on the circuit board, thereby completing the carbon oil hole filling processing of the circuit board. However, after the carbon oil hole filling processing of the circuit board is completed, the air disc is still in a negative pressure state. When the unprocessed circuit board is placed on the air disc, the negative pressure values of each region in the air disc are difficult to be consistent, thereby causing the carbon oil to be difficult to uniformly penetrate to the bottom surface of the circuit board, and reducing the product quality of the circuit board. SUMMARY

[0003] In order to enable the carbon oil to uniformly penetrate to the bottom surface of the circuit board and improve the product quality of the circuit board, the present application provides a circuit board carbon oil hole filling device.

[0004] The circuit board carbon oil hole filling device provided by the present application adopts the following technical scheme:

[0005] A circuit board carbon oil hole filling device, comprising: a mounting frame, the mounting frame defining a mounting space; an air disc, the air disc being mounted on the mounting frame, the air disc defining a ventilation space, the ventilation space forming a ventilation hole on the top wall of the air disc, and a board being placed on the top wall of the air disc and opposite to the ventilation hole.

[0006] A blowing and sucking assembly, the blowing and sucking assembly being mounted in the mounting frame, the blowing and sucking assembly comprising a fan and a reversing piece, the reversing piece comprising a fixed plate, a reversing plate and a first driving piece, the reversing plate being slidingly arranged on the fixed plate, the fixed plate being provided with a first air outlet communicating with the ventilation space, the reversing plate being provided with a first air inlet and a second air inlet, the first air inlet communicating with the air outlet end of the fan, the second air inlet communicating with the air inlet end of the fan, the first air inlet and the second air inlet being adapted to be oppositely and communicatively arranged with the first air outlet, the first driving piece being connected and matched with the reversing plate, the first driving piece being used to drive the reversing plate to move between a first position and a second position relative to the first air outlet, in the first position, the second air inlet and the first air outlet are opposite and communicated, in the second position, the first air inlet and the first air outlet are opposite and communicated.

[0007] By adopting the above technical solution, the first drive member drives the reversing plate to move between a first position and a second position. When the reversing plate is in the first position, the fan draws suction from the lower end surface of the sheet material through the air disc, allowing the carbon oil to penetrate from the upper end surface of the sheet material to the lower end surface of the sheet material. When the reversing plate is in the second position, the fan blows air into the air disc to relieve the negative pressure within the air disc, thereby minimizing the negative pressure unevenness in various areas of the air disc. Compared to the prior art, after the sheet material carbon oil filling process is completed and the unprocessed sheet material is placed on the air disc, the uneven suction force applied to various areas of the sheet material's lower end surface can be minimized, allowing the carbon oil on the upper end surface of the sheet material to penetrate as evenly as possible to the lower end surface of the sheet material, thereby improving the product quality of the sheet material.

[0008] Preferably, the blowing and suction assembly also includes a silencer, and the fixed plate is provided with a second air outlet adapted to be opposite to and connected to the first air inlet, and the second air outlet is connected to the silencer. In the first position, the first air inlet and the second air outlet are arranged opposite to and connected to each other, and the silencer is used to eliminate the noise generated by the gas.

[0009] By adopting the above technical solution, the first driving member drives the reversing plate to move to the first position, the first air inlet and the second air outlet are arranged opposite to each other and in communication, the air inlet end of the fan sucks the lower end surface of the sheet through the second air inlet, the first air outlet and the air disk, and the air outlet end of the fan blows the gas to the silencer through the first air inlet and the second air outlet, thereby minimizing the noise generated by the circuit board carbon oil filling equipment during operation, thereby improving the working comfort of the workers.

[0010] Preferably, the blowing and suction assembly also includes a flow regulating member, an air shut-off valve and a first connecting pipeline, the first connecting pipeline is connected between the air inlet end of the fan and the second air inlet, the flow regulating member and the air shut-off valve are both arranged on the first connecting pipeline, the flow regulating member is used to regulate the flow of gas in the first connecting pipeline, the outer peripheral wall of the air shut-off valve has a third air inlet suitable for connecting with the air inlet end of the fan, the air shut-off valve is used to connect the air inlet end of the fan and the gas disk, and cut off the third air inlet and the air inlet end of the fan, or connect the air inlet end of the fan and the third air inlet, and cut off the gas disk and the air inlet end of the fan.

[0011] By adopting the above technical solution, a flow regulating member is provided in the first connecting pipeline, which can adjust the flow rate of gas in the first pipeline, thereby controlling the suction force of the fan on the sheet material, minimizing damage to the sheet material caused by excessive suction force, and thereby improving the operating reliability of the circuit board carbon oil filling equipment. Furthermore, when the fan continues to operate to improve the processing efficiency of the circuit board carbon oil filling equipment, and the first driving member drives the reversing plate to move between the first position and the second position, the air shutoff valve connects the air inlet end of the fan and the third air inlet, and blocks the air disk and the air inlet end of the fan, thereby preventing the fan from sucking gas from the external environment through the second air inlet, preventing the second air inlet from adsorbing the end wall of the fixed plate opposite the reversing plate, and preventing the first driving member from being unable to drive the reversing plate to move between the first position and the second position, thereby improving the operating reliability of the circuit board carbon oil filling equipment.

[0012] Preferably, the blowing and suction assembly also includes a second connecting pipeline, there are multiple air holes, and the multiple air holes are spaced apart along the radial direction of the circuit board carbon oil filling device. A partition plate is provided in the air disk, and the partition plate divides the ventilation space into multiple sub-ventilation spaces spaced apart along the radial direction of the circuit board carbon oil filling device. One end of the second connecting pipeline is connected to the first air outlet, and the other end is provided with multiple third air outlets spaced apart along the radial direction of the circuit board carbon oil filling device. The multiple third air outlets correspond one-to-one to the multiple sub-ventilation spaces and are connected.

[0013] By adopting the above technical solution, a partition plate is provided within the air tray, dividing the ventilation space into multiple sub-ventilation spaces. The multiple sub-ventilation spaces correspond one-to-one with and are arranged relative to multiple areas of the lower end surface of the sheet metal. The fan simultaneously draws air from multiple areas of the lower end surface of the sheet metal through the second connecting pipe and the multiple sub-ventilation spaces, allowing carbon oil from the upper end surface of the sheet metal to evenly penetrate all areas of the lower end surface of the sheet metal, thereby improving the processing quality of the sheet metal. Furthermore, the fan simultaneously blows air to multiple areas of the lower end surface of the sheet metal through the second connecting pipe and the multiple sub-ventilation spaces, evenly blowing the lower end surface of the sheet metal away from the air tray, thereby improving the user experience of the circuit board carbon oil filling equipment.

[0014] Preferably, a flow equalizer is provided in the gas disk, and the flow equalizer is provided with a plurality of flow equalizer holes spaced apart along the radial direction of the circuit board carbon oil filling device, the flow equalizer holes are suitable for allowing gas to pass through, and the flow equalizer is used to evenly distribute the flow direction of the gas.

[0015] By adopting the above technical solution, the flow equalizer can evenly distribute the gas blown by the fan to various areas in the gas disk. When the fan sucks the sheet through the gas disk, the flow equalizer can evenly distribute the suction force of the fan to various areas of the lower end surface of the sheet, so that the carbon oil on the upper end surface of the sheet can penetrate into the lower end surface of the sheet as evenly as possible, thereby further improving the product quality of the sheet.

[0016] Preferably, the circuit board carbon oil filling equipment also includes: a scraping mechanism, which is arranged on the mounting frame, and the scraping mechanism includes a scraper, a first drive component, a second drive component and a silk screen, the second drive component is transmission-connected to the first drive component and the scraper, the silk screen is arranged on the second drive component, the scraper is located on the side of the silk screen away from the sheet material and is suitable for stopping with the silk screen, the first drive component is used to drive the second drive component to drive the scraper and the silk screen to move closer to or away from the sheet material, and the second drive component is used to drive the scraper to move along the first direction of the circuit board carbon oil filling equipment.

[0017] By adopting the above technical solution, the first drive component drives the second drive component to drive the scraper and the silk screen printing screen to move close to the sheet material, so that the silk screen printing screen and the sheet material are stopped, and then the second drive component drives the scraper to move back and forth in the first direction of the circuit board carbon oil filling device. The scraper scrapes the carbon oil on the silk screen printing screen so that the carbon oil can be evenly distributed on the silk screen printing screen. The carbon oil flows into the preset area of ​​the upper end wall of the sheet material through the preset holes of the silk screen printing screen, thereby achieving the technical effect of coating carbon oil only on the preset area of ​​the sheet material.

[0018] Preferably, the first drive assembly includes a second drive member, a connecting member and a transmission rod. Along the height direction of the circuit board carbon oil filling device, one of the first drive assembly and the second drive assembly is located above the other, one end of the connecting member is connected and cooperated with the second drive member, and the other end of the connecting member is pivotally connected to one end of the transmission rod, and the other end of the transmission rod is pivotally connected to the second drive assembly. The second drive member is used to drive the connecting member to drive the transmission rod to rotate around the central axis of the second drive member, and drive the other end of the transmission rod to rotate around the pivot axis between the transmission rod and the second drive assembly, so that the transmission rod drives the second drive assembly to move closer to or away from the sheet material.

[0019] By adopting the above technical solution, the second driving member drives the connecting member to rotate around the central axis of the output end of the second driving member. When the second driving member drives the end of the connecting member pivotally connected to the transmission rod to rotate downward, the transmission rod drives the second driving assembly to move downward, and the second driving assembly drives the scraper to move closer to the sheet material. When the second driving member drives the end of the connecting member pivotally connected to the transmission rod to rotate upward, the transmission rod drives the second driving assembly to move upward, and the second driving assembly drives the scraper to move away from the sheet material, thereby achieving the technical effect of the first driving assembly driving the second driving assembly to drive the scraper to move closer to or away from the sheet material.

[0020] Preferably, the second drive assembly includes a connecting frame, a third driving member, a driving wheel, a driven wheel and a transmission belt. The connecting frame is in transmission connection with the first driving assembly, the third driving member is arranged on the connecting frame, the driving wheel and the driven wheel are pivotally mounted on the connecting frame, the transmission belt is wound around the outer sides of the driving wheel and the driven wheel, the scraper is connected and cooperated with the transmission belt, the third driving member is connected and cooperated with the driving wheel, and the third driving member is used to drive the driving wheel to drive the transmission belt to rotate, so that the transmission belt drives the scraper to move along the first direction of the circuit board carbon oil filling device.

[0021] By adopting the above technical solution, the third driving member drives the active wheel to rotate around the central axis of the third driving member, the active wheel drives the transmission belt to rotate around the active wheel and the driven wheel, and the transmission belt drives the scraper to move back and forth between the left end portion of the sheet and the right end portion of the sheet, thereby achieving the technical effect of the scraper scraping the carbon oil on the upper end surface of the sheet to various areas of the upper end surface of the sheet.

[0022] Preferably, the scraping mechanism further includes: a fourth driving member, the fourth driving member is transmission-connected to the second driving assembly, the scraper is connected and cooperated with the fourth driving member, and the fourth driving member is used to drive the scraper to move closer to or away from the silk screen screen.

[0023] By adopting the above technical solution, when replacing the silk screen screen, the fourth driving member drives the scraper to move away from the silk screen screen to separate the scraper from the silk screen screen, so that the corresponding silk screen screen can be disassembled and replaced. After replacing the preset silk screen screen, the fourth driving member drives the scraper to move close to the silk screen screen to stop the scraper from stopping the silk screen screen, thereby achieving the technical effect of stopping or separating the scraper from the silk screen screen.

[0024] Preferably, the scraping mechanism also includes: a detection switch, a protective frame and a controller, the protective frame is pivotally connected to the second drive assembly, the protective frame is arranged around the outside of the air disk and the scraper, the protective frame is abutted against the trigger part of the detection switch, the controller is communicatively connected with the detection switch, the first drive assembly and the second drive assembly, when the protective frame is driven to rotate around the pivot axis of the protective frame, the protective frame triggers the trigger part, and the controller is used to control the first drive assembly and the second drive assembly to stop working according to the detection signal of the detection switch.

[0025] By adopting the above technical solution, when the first drive assembly drives the scraper and the protective frame to move close to the sheet material, and the worker's hand is not separated from the sheet material, the worker's hand touches the protective frame and drives the protective frame to rotate around the pivot axis between the protective frame and the connecting frame close to the trigger part of the detection switch. The protective frame triggers the trigger part of the detection switch, and the detection switch generates a detection signal. The controller controls the first drive assembly and the second drive assembly to stop working according to the detection signal of the detection switch, thereby preventing the worker's hand from being scratched by the scraper, and further improving the safety of the circuit board carbon oil filling equipment.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. The reversing plate is driven by a first driving member to move between a first position and a second position. When the reversing plate is in the first position, the fan sucks the carbon oil from the upper end of the sheet metal to the lower end of the sheet metal through the air disc, so that the carbon oil penetrates from the upper end of the sheet metal to the lower end of the sheet metal. When the reversing plate is in the second position, the fan blows air into the air disc to relieve the negative pressure in the air disc, thereby minimizing the negative pressure in various areas of the air disc. Compared with the existing technology, after the sheet metal carbon oil filling process is completed and the unprocessed sheet metal is placed on the air disc, the uneven suction force in various areas of the sheet metal lower end surface can be minimized, and the carbon oil on the upper end of the sheet metal can penetrate as evenly as possible to the lower end of the sheet metal, thereby improving the product quality of the sheet metal.

[0028] 2. The flow equalizer can evenly distribute the gas blown by the fan to various areas in the gas disc. When the fan sucks the sheet through the gas disc, the flow equalizer can evenly distribute the suction force of the fan to various areas of the lower end surface of the sheet, so that the carbon oil on the upper end surface of the sheet can penetrate as evenly as possible to the lower end surface of the sheet, thereby further improving the product quality of the sheet;

[0029] 3. The third driving member drives the driving wheel to rotate around the central axis of the third driving member, the driving wheel drives the transmission belt to rotate around the driving wheel and the driven wheel, and the transmission belt drives the scraper to move between the left end of the plate and the right end of the plate, so that the technical effect of scraping the carbon oil on the upper end face of the plate to each area of the upper end face of the plate by the scraper can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a schematic view of a circuit board carbon oil filling hole device according to an embodiment of the present application;

[0031] Figure 2 is Figure 1 is an enlarged schematic view of A in FIG. 1;

[0032] Figure 3 is Figure 1 is an enlarged schematic view of B in FIG. 1;

[0033] Figure 4 is Figure 1 is an enlarged schematic view of C in FIG. 1;

[0034] Figure 5 is a sectional view of part of the structure of the circuit board carbon oil filling hole device according to an embodiment of the present application;

[0035] Figure 6 is Figure 5 is an enlarged schematic view of D in FIG. 1;

[0036] Figure 7 is Figure 5 is an enlarged schematic view of E in FIG. 1;

[0037] Figure 8 is Figure 5 is an enlarged schematic view of F in FIG. 1;

[0038] Figure 9 is a schematic view of a reversing member according to an embodiment of the present application;

[0039] Figure 10 is a sectional view of a cut-off valve according to an embodiment of the present application;

[0040] Figure 11 is a schematic view of another angle of the circuit board carbon oil filling hole device according to an embodiment of the present application;

[0041] Figure 12 is Figure 11 is an enlarged schematic view of G in FIG. 1;

[0042] Figure 13 is Figure 11 is an enlarged schematic view of H in FIG. 1;

[0043] Figure 14 is Figure 11 Enlarged schematic diagram of point I in the middle.

[0044] Description of reference numerals:

[0045] 100. Circuit board carbon oil filling equipment;

[0046] 1. Mounting frame; 11. Installation space;

[0047] 2. Gas disk; 21. Ventilation space; 211. Sub-ventilation space; 22. Ventilation hole; 23. Separator; 24. Flow plate; 241. Flow hole;

[0048] 3. Blowing and suction assembly; 31. Fan; 32. Reversing member; 321. Fixing plate; 3211. First air outlet; 3212. Second air outlet; 322. Reversing plate; 3221. First air inlet; 3222. Second air inlet; 323. First driving member; 33. Silencer; 34. Flow regulating member; 35. Air shutoff valve; 351. Third air inlet; 352. Valve core; 36. First connecting pipeline; 37. Second connecting pipeline; 371. Third air outlet;

[0049] 4. Scraping mechanism; 41. Scraper; 42. First drive assembly; 421. Second drive member; 422. Connecting member; 423. Transmission rod; 43. Second drive assembly; 431. Connecting frame; 432. Third drive member; 433. Driving wheel; 434. Driven wheel; 435. Transmission belt; 436. Limiting member; 44. Fourth drive member; 45. Detection switch; 451. Trigger unit; 46. Protective frame. DETAILED DESCRIPTION

[0050] The following is combined with Figures 1-14 This application is described in further detail.

[0051] The embodiment of the present application discloses a carbon oil filling device 100 for a circuit board.

[0052] Reference Figure 1 、 Figure 5 、 Figure 6 、 Figure 8 and Figure 9 According to an embodiment of the present application, a circuit board carbon oil filling device 100 includes a mounting frame 1, an air plate 2, and a blowing and suction assembly 3. The mounting frame 1 defines a mounting space 11, and the air plate 2 is mounted on the mounting frame 1. The air plate 2 defines a ventilation space 21. The ventilation space 21 forms a ventilation hole 22 on the top wall of the air plate 2. A plate is placed on the top wall of the air plate 2 and opposite the ventilation hole 22. In other words, when the plate is placed on the top wall of the air plate 2, the plate adheres to the top wall of the ventilation hole 22.

[0053] The blowing and suction assembly 3 is installed in the mounting frame 1. The blowing and suction assembly 3 includes a fan 31 and a reversing member 32. The reversing member 32 includes a fixed plate 321, a reversing plate 322 and a first driving member 323. The reversing plate 322 is slidably arranged on the fixed plate 321. The fixed plate 321 is provided with a first air outlet 3211 communicating with the ventilation space 21. The reversing plate 322 is provided with a first air inlet 3221 and a second air inlet 3222. Specifically, along the height direction of the circuit board carbon oil filling device 100 The first air outlet 3211 is arranged on the upper end wall of the fixing plate 321, the first air inlet 3221 and the second air inlet 3222 are both arranged on the lower end wall of the reversing plate 322, the first air inlet 3221 is connected to the air outlet end of the fan 31, and the second air inlet 3222 is connected to the air inlet end of the fan 31, the first air inlet 3221 and the second air inlet 3222 are both suitable for being arranged opposite to and in communication with the first air outlet 3211, and the height direction of the circuit board carbon oil filling device 100 can refer to Figure 1 The up and down directions in .

[0054] In some specific embodiments, the first driving member 323 and the fixed plate 321 can be fixedly connected to the mounting frame 1. In other specific embodiments, an iron pipeline is connected between the first air outlet 3211 and the air disk 2, and the iron pipeline between the fixed plate 321 and the first air outlet 3211 and the air disk 2 is fixedly connected, that is, the iron pipeline between the fixed plate 321 and the first air outlet 3211 and the air disk 2 can maintain a relative position unchanged, and the first driving member 323 is installed on the outer peripheral wall of the fixed plate 321.

[0055] Furthermore, a seal is provided between the reversing plate 322 and the fixed plate 321 .

[0056] In addition, the first driving member 323 is connected to the reversing plate 322, and the first driving member 323 is used to drive the reversing plate 322 to move between the first position and the second position relative to the first air outlet 3211. Specifically, along the first direction of the circuit board carbon oil filling device 100, the first driving member 323 drives the reversing plate 322 to move left or right relative to the first air outlet 3211, so that the reversing plate 322 moves between the first position and the second position. In the first position, the second air inlet 3222 and the first air outlet 3211 are relative and connected. In the second position, the first air inlet 3221 and the first air outlet 3211 are relative and connected. The first direction of the circuit board carbon oil filling device 100 can refer to Figure 1 Left and right direction in .

[0057] Specifically, when the sheet material is placed on the top wall of the air disk 2 and the upper end surface of the sheet material is coated with carbon oil, the first driving member 323 drives the reversing plate 322 to move to the first position so that the second air inlet 3222 and the first air outlet 3211 are opposite and connected, and then the fan 31 starts to work, and the air inlet end of the fan 31 sucks the air disk 2 through the second air inlet 3222 and the first air outlet 3211 to form a negative pressure in the ventilation space 21. Under the action of air pressure, the carbon oil on the upper end surface of the sheet material penetrates through the prefabricated holes on the sheet material to the lower end surface of the sheet material, thereby completing the carbon oil filling process of the sheet material.

[0058] After the carbon oil filling process is completed, the first driving member 323 drives the reversing plate 322 to the second position. The first air inlet 3221 and the first air outlet 3211 are arranged opposite and in communication with each other. The air outlet of the fan 31 blows air into the air tray 2 through the first air inlet 3221 and the first air outlet 3211 to relieve the negative pressure in the air tray 2, thereby reducing the difficulty for the operator to remove the sheet from the air tray 2. In addition, when the unprocessed sheet is placed on the air tray 2, this arrangement can minimize the uneven negative pressure in various areas of the air tray 2. When the fan 31 sucks the unprocessed sheet, the suction force applied to various areas of the sheet's lower end surface is as uniform as possible, so that the carbon oil on the sheet's upper end surface can penetrate as evenly as possible to the sheet's lower end surface.

[0059] In some specific embodiments, the first driving member 323 may be a cylinder, but the present application is not limited thereto. The first driving member 323 may also be a hydraulic cylinder, etc.

[0060] Thus, the first driving member 323 drives the reversing plate 322 to move between the first position and the second position. When the reversing plate 322 is in the first position, the fan 31 draws air from the lower end surface of the sheet material through the air plate 2, causing the carbon oil to penetrate from the upper end surface of the sheet material to the lower end surface of the sheet material. When the reversing plate 322 is in the second position, the fan 31 blows air into the air plate 2 to relieve the negative pressure within the air plate 2, thereby minimizing the negative pressure unevenness in various areas of the air plate 2. Compared with the prior art, after the sheet material carbon oil injection process is completed and the unprocessed sheet material is placed on the air plate 2, the uneven suction force applied to various areas of the sheet material's lower end surface can be minimized, allowing the carbon oil on the upper end surface of the sheet material to penetrate as evenly as possible to the lower end surface of the sheet material, thereby improving the product quality of the sheet material.

[0061] Reference Figure 1 and Figure 5In some embodiments of the present application, the blowing and sucking assembly 3 can further comprise a muffler 33, the fixed plate 321 is provided with a second air outlet 3212 opposite and in communication with the first air inlet 3221, specifically, along the direction of the circuit board carbon oil hole filling device 100, the second air outlet 3212 is arranged on the upper end wall of the fixed plate 321, and the second air outlet 3212 is in communication with the muffler 33, and in the first position, the first air inlet 3221 and the second air outlet 3212 are arranged opposite and in communication.

[0062] Specifically, when the plate is placed on the upper end wall of the air disc 2, the first driving part 323 drives the reversing plate 322 to move to the first position, the first air inlet 3221 and the second air outlet 3212 are arranged opposite and in communication, the air inlet end of the fan 31 sucks the lower end surface of the plate through the second air inlet 3222, the first air outlet 3211 and the air disc 2, and the air outlet end of the fan 31 blows the gas to the muffler 33 through the first air inlet 3221 and the second air outlet 3212, the muffler 33 is used to eliminate the noise generated by the gas, so that the noise generated by the circuit board carbon oil hole filling device 100 during work can be reduced as much as possible, and the working comfort of workers can be improved.

[0063] It should be noted that when the reversing plate 322 is in the second position, the air inlet end of the fan 31 is not in communication with the muffler 33.

[0064] In some specific embodiments, the muffler 33 can be a muffler, but the present application is not limited to this, and the muffler 33 can also be a silencer or the like.

[0065] Referring to Figure 5-Figure 7 and Figure 10 In some embodiments of the present application, the blowing and sucking assembly 3 can further comprise a flow regulating part 34, a wind cut-off valve 35 and a first connecting pipeline 36, the first connecting pipeline 36 is in communication between the air inlet end of the fan 31 and the second air inlet 3222, the flow regulating part 34 and the wind cut-off valve 35 are arranged in the first connecting pipeline 36, and the flow regulating part 34 is used to regulate the flow of gas in the first connecting pipeline 36.

[0066] By arranging the flow regulating part 34 in the first connecting pipeline 36, the flow regulating part 34 can regulate the flow of gas in the first pipeline, so that the suction strength of the fan 31 on the plate can be controlled, the damage of the plate caused by excessive suction strength can be prevented as much as possible, and the working reliability of the circuit board carbon oil hole filling device 100 can be improved.

[0067] In some specific embodiments, the flow regulating part 34 can be a throttle valve, but the present application is not limited to this, and the flow regulating part 34 can also be a proportional valve or the like.

[0068] In addition, the outer peripheral wall of the air shut-off valve 35 has a third air inlet 351 suitable for connecting with the air inlet end of the fan 31, and the third air inlet 351 is connected to the external environment. The air shut-off valve 35 is used to connect the air inlet end of the fan 31 and the air disk 2, and cut off the third air inlet 351 and the air inlet end of the fan 31, or connect the air inlet end of the fan 31 and the third air inlet 351, and cut off the air disk 2 and the air inlet end of the fan 31.

[0069] Specifically, a valve core 352 is movably provided in the air shut-off valve 35. The valve core 352 is used to connect the air inlet end of the fan 31 and the air disk 2, and cut off the third air inlet 351 and the air inlet end of the fan 31, or connect the air inlet end of the fan 31 and the third air inlet 351, and cut off the air disk 2 and the air inlet end of the fan 31.

[0070] When the reversing plate 322 is in the first position, the air shut-off valve 35 connects the air inlet end of the fan 31 and the air disk 2, and cuts off the third air inlet 351 and the air inlet end of the fan 31. Along the height direction of the circuit board carbon oil filling equipment 100, the air inlet end of the fan 31 sucks the lower end surface of the sheet through the air disk 2.

[0071] After the carbon oil filling process of the sheet material is completed, the fan 31 does not stop working, the air shut-off valve 35 connects the air inlet end of the fan 31 and the third air inlet 351, and cuts off the air disc 2 and the air inlet end of the fan 31, and then the first driving member 323 drives the reversing plate 322 to move from the first position to the second position, and the air inlet end of the fan 31 sucks the gas in the external environment through the third air inlet 351, and the air outlet end of the fan 31 blows gas to the air disc 2 to relieve the negative pressure state in the air disc 2.

[0072] After the worker takes out the sheet from the air disk 2, the fan 31 does not stop working. The first driving member 323 drives the reversing plate 322 to move from the second position to the first position. Then the air shut-off valve 35 connects the air inlet end of the fan 31 and the air disk 2, and cuts off the third air inlet 351 and the air inlet end of the fan 31, thereby achieving the technical effect of the cyclic operation of the circuit board carbon oil filling equipment 100.

[0073] When the fan 31 continues to work to improve the processing efficiency of the circuit board carbon oil filling device 100, and the first driving member 323 drives the reversing plate 322 to move between the first position and the second position, the air shut-off valve 35 connects the air inlet end of the fan 31 and the third air inlet 351, and cuts off the air disk 2 and the air inlet end of the fan 31, thereby preventing the fan 31 from sucking in gas from the external environment through the second air inlet 3222, avoiding the second air inlet 3222 from adsorbing the end wall of the fixed plate 321 opposite to the reversing plate 322, and preventing the first driving member 323 from being unable to drive the reversing plate 322 to move between the first position and the second position, thereby improving the working reliability of the circuit board carbon oil filling device 100.

[0074] Referring to Figure 5 and Figure 8 In some embodiments of the present application, the blowing and sucking assembly 3 can further include a second connecting pipeline 37, the air vent hole 22 is a plurality of air vent holes 22, the plurality of air vent holes 22 are arranged in the radial direction of the circuit board carbon oil filling hole device 100, and the air disc 2 is provided with a partition plate 23. Specifically, the partition plate 23 is vertically arranged in the air disc 2 in the height direction of the circuit board carbon oil filling hole device 100, and the partition plate 23 divides the air vent space 21 into a plurality of sub-air vent spaces 211 arranged in the radial direction of the circuit board carbon oil filling hole device 100.

[0075] It should be noted that the number of sub-air vent spaces 211 is associated with the shape of the partition plate 23.

[0076] In some specific embodiments, when the shape of the partition plate 23 is configured as a flat plate shape, the partition plate 23 divides the air vent space 21 into two sub-air vent spaces 211 in the first direction of the circuit board carbon oil filling hole device 100, one of the two sub-air vent spaces 211 is located on the left side of the partition plate 23, and the other of the two sub-air vent spaces 211 is located on the right side of the partition plate 23.

[0077] In another specific embodiment, when the shape of the partition plate 23 is configured as a cross shape, the partition plate 23 divides the air vent space 21 into four sub-air vent spaces 211, and the four air vent spaces 21 are arranged in the radial direction of the circuit board carbon oil filling hole device 100.

[0078] And one end of the second connecting pipeline 37 communicates with the first air outlet 3211, and the other end of the second connecting pipeline 37 is provided with a plurality of third air outlets 371 arranged in the radial direction of the circuit board carbon oil filling hole device 100, the plurality of third air outlets 371 are arranged in one-to-one correspondence with the plurality of sub-air vent spaces 211, and the fan 31 sucks the gas in the plurality of sub-air vent spaces 211 through the plurality of third air outlets 371, and blows the gas to the plurality of sub-air vent spaces 211.

[0079] By arranging the partition plate 23 in the air disc 2, the partition plate 23 divides the air vent space 21 into a plurality of sub-air vent spaces 211, the plurality of sub-air vent spaces 211 are arranged in one-to-one correspondence with the plurality of regions of the lower end surface of the plate, and the fan 31 simultaneously sucks the plurality of regions of the lower end surface of the plate through the second connecting pipeline 37 and the plurality of sub-air vent spaces 211, so that the carbon oil on the upper end surface of the plate can uniformly penetrate into each region of the lower end surface of the plate, thereby improving the processing quality of the plate.

[0080] Referring to Figure 5 and Figure 8In some embodiments of the present application, a flow equalizer plate 24 is provided in the gas disk 2. Specifically, along the first direction of the plate material filling hole setting, the flow equalizer plate 24 is horizontally arranged in the gas disk 2, and the flow equalizer plate 24 is provided with a plurality of flow equalizer holes 241 spaced apart along the radial direction of the circuit board carbon oil filling hole device 100, and along the height direction of the circuit board carbon oil filling hole device 100, the flow equalizer holes 241 pass through the upper end surface of the flow equalizer plate 24 and the lower end surface of the flow equalizer plate 24.

[0081] In addition, the flow-equalizing hole 241 is suitable for allowing gas to pass through, and the flow-equalizing plate 24 is used to evenly distribute the flow direction of the gas. When the fan 31 sucks the sheet through the gas disk 2, the flow-equalizing plate 24 can evenly distribute the suction force of the fan 31 to various areas of the lower end surface of the sheet, so that the carbon oil on the upper end surface of the sheet can penetrate into the lower end surface of the sheet as evenly as possible, thereby further improving the product quality of the sheet.

[0082] Reference Figure 1-Figure 3 and Figure 11 In some embodiments of the present application, the circuit board carbon oil filling device 100 may further include: a scraping mechanism 4, the scraping mechanism 4 is arranged on the mounting frame 1, the scraping mechanism 4 includes a scraper 41, a first drive component 42, a second drive component 43 and a silk screen, the second drive component 43 is transmission-connected to the first drive component 42 and the scraper 41, the silk screen is arranged on the second drive component 43, the scraper 41 is located on the side of the silk screen away from the sheet material and is suitable for stopping with the silk screen, the first drive component 42 is used to drive the second drive component 43 to drive the scraper 41 and the silk screen to move closer to or away from the sheet material, and the second drive component 43 is used to drive the scraper 41 to move along the first direction of the circuit board carbon oil filling device 100.

[0083] Specifically, after the sheet is placed on the upper end surface of the gas disk 2, along the height direction of the circuit board carbon oil filling device 100, the scraper 41 is located above the silk screen, and the sheet is located below the silk screen, and the scraper 41 is stopped and cooperated with the upper end wall of the silk screen. The upper end wall of the silk screen is provided with carbon oil. The first drive component 42 drives the second drive component 43 to drive the scraper 41 and the silk screen to move close to the sheet, so that the silk screen and the sheet are stopped, and then the second drive component 43 drives the scraper 41 to reciprocate along the first direction of the circuit board carbon oil filling device 100. The scraper 41 scrapes the carbon oil on the silk screen so that the carbon oil can be evenly distributed on the silk screen. The carbon oil flows into the preset area of ​​the upper end wall of the sheet through the preset holes of the silk screen, thereby achieving the technical effect of coating carbon oil only on the preset area of ​​the sheet.

[0084] Furthermore, the scraper 41 and the screen printing plate evenly distribute the carbon oil to the preset area of ​​the upper end surface of the sheet material, so that the carbon oil can evenly penetrate into the preset area of ​​the lower end surface of the sheet material, thereby improving the processing quality of the carbon oil filling holes of the sheet material.

[0085] After the sheet material is processed, the first drive assembly 42 drives the second drive assembly 43 to move the screen printing plate and the scraper 41 away from the sheet material.

[0086] It should be noted that the prefabricated holes of the sheet are only set in part of the area of ​​the sheet, the preset holes of the silk screen are opposite to the preset holes of the sheet, and the carbon oil on the silk screen flows through the preset holes of the silk screen into the area of ​​the sheet with the prefabricated holes.

[0087] Furthermore, a flexible silicone strip is provided on the end surface of the scraper 41 that contacts the screen printing plate.

[0088] Reference Figure 11-13 In some embodiments of the present application, the first drive assembly 42 includes a second drive member 421, a connecting member 422, and a transmission rod 423. Along the height direction of the circuit board carbon oil filling device 100, one of the first drive assembly 42 and the second drive assembly 43 is located above the other, one end of the connecting member 422 is connected to the second drive member 421, and the other end of the connecting member 422 is pivotally connected to one end of the transmission rod 423, and the other end of the transmission rod 423 is pivotally connected to the second drive assembly 43.

[0089] In some specific embodiments, the second drive component 43 is located above the first drive component 42, the second drive member 421 is arranged on the mounting frame 1, one end of the connecting member 422 is connected to the output end of the second drive member 421, and the other end of the connecting member 422 is pivotally connected to the lower end of the transmission rod 423, and the upper end of the transmission rod 423 is pivotally connected to the second drive component 43.

[0090] In addition, the second driving member 421 is used to drive the connecting member 422 to drive the transmission rod 423 to rotate around the central axis of the second driving member 421, and drive the other end of the transmission rod 423 to rotate around the pivot axis between the transmission rod 423 and the second driving assembly 43, so that the transmission rod 423 drives the second driving assembly 43 to move closer to or away from the sheet material.

[0091] Specifically, the second driving member 421 drives the connecting member 422 to rotate around the central axis of the output end of the second driving member 421. When the second driving member 421 drives the end of the connecting member 422 pivotally connected to the transmission rod 423 to rotate downward, the transmission rod 423 drives the second driving component 43 to move downward, and the second driving component 43 drives the scraper 41 to move closer to the sheet material. When the second driving member 421 drives the end of the connecting member 422 pivotally connected to the transmission rod 423 to rotate upward, the transmission rod 423 drives the second driving component 43 to move upward, and the second driving component 43 drives the scraper 41 to move away from the sheet material, thereby achieving the technical effect of the first driving component 42 driving the second driving component 43 to drive the scraper 41 to move closer to or away from the sheet material.

[0092] It should be noted that when the connecting member 422 drives the transmission rod 423 to move upward or downward, the end of the transmission rod 423 pivotally connected to the connecting member 422 rotates around the pivot axis between the transmission rod 423 and the connecting member 422, and the end of the transmission rod 423 pivotally connected to the second drive assembly 43 rotates around the pivot axis between the transmission rod 423 and the second drive assembly 43.

[0093] In some specific embodiments, the second driving member 421 may be a motor, but the present application is not limited thereto. The second driving member 421 may also be a hydraulic motor, etc.

[0094] Reference Figure 1-Figure 3 and Figure 11 In some embodiments of the present application, the second drive assembly 43 includes a connecting frame 431, a third driving member 432, a driving wheel 433, a driven wheel 434 and a transmission belt 435. The connecting frame 431 is transmission-connected to the first drive assembly 42. Specifically, the connecting frame 431 is pivotally connected to the end of the transmission rod 423 away from the connecting member 422, the third driving member 432 is arranged on the connecting frame 431, the driving wheel 433 and the driven wheel 434 are both pivotally mounted on the connecting frame 431, and the transmission belt 435 is wound around the driving wheel 433 and the driven wheel 434. On the outside of the moving wheel 434, the scraper 41 is connected and cooperated with the transmission belt 435. In some specific embodiments, the scraper 41 can be connected and cooperated with the upper end of the transmission belt 435. In other specific embodiments, the scraper 41 can also be connected and cooperated with the lower end of the transmission belt 435. The third driving member 432 is connected and cooperated with the active wheel 433. The third driving member 432 is used to drive the active wheel 433 to drive the transmission belt 435 to rotate, so that the transmission belt 435 drives the scraper 41 to move along the first direction of the circuit board carbon oil filling device 100.

[0095] It should be noted that the transmission belt 435 drives the scraper 41 to reciprocate between the driving wheel 433 and the driven wheel 434, and the connection between the scraper 41 and the transmission belt 435 cannot bypass the driving wheel 433 and the driven wheel 434. That is to say, when the scraper 41 is connected and matched with the upper end of the transmission belt 435, the connection between the scraper 41 and the upper end of the transmission belt 435 can only reciprocate linearly between the driving wheel 433 and the driven wheel 434, and the connection between the scraper 41 and the upper end of the transmission belt 435 cannot bypass the driving wheel 433 and the driven wheel 434 to perform circular motion.

[0096] Specifically, the third driving member 432 drives the driving wheel 433 to rotate around the central axis of the third driving member 432, the driving wheel 433 drives the transmission belt 435 to rotate around the driving wheel 433 and the driven wheel 434, and the transmission belt 435 drives the scraper 41 to move back and forth between the left end portion of the sheet and the right end portion of the sheet, thereby achieving the technical effect of the scraper 41 scraping the carbon oil on the upper end surface of the sheet to various areas of the upper end surface of the sheet.

[0097] In some specific embodiments, the third driving member 432 may be a motor, but the present application is not limited thereto. The third driving member 432 may also be a hydraulic motor, etc.

[0098] In some specific embodiments, the driving wheel 433 and the driven wheel 434 may both be synchronous wheels, and the transmission belt 435 may be a synchronous belt.

[0099] Reference Figure 1 and Figure 4 In some embodiments of the present application, the scraping mechanism 4 may further include: a fourth driving member 44, the fourth driving member 44 is transmission-connected to the second driving assembly 43, the scraper 41 is connected and cooperated with the fourth driving member 44, the fourth driving member 44 is used to drive the scraper 41 to move closer to or away from the silk screen screen, and the second driving assembly 43 drives the fourth driving member 44 to drive the scraper 41 to move along the first direction of the circuit board carbon oil filling device 100.

[0100] Prefabricated holes are provided in the preset area of ​​the upper end wall of the sheet material. The positions of the preset holes of different sheets are different, and the silk screen screens corresponding to different sheets are different. When replacing the silk screen screen, the fourth driving member 44 drives the scraper 41 to move away from the silk screen screen to separate the scraper 41 from the silk screen screen, so that the corresponding silk screen screen can be disassembled and replaced. After replacing the preset silk screen screen, the fourth driving member 44 drives the scraper 41 to move close to the silk screen screen to stop the scraper 41 and the silk screen screen, thereby achieving the technical effect of stopping or separating the scraper 41 and the silk screen screen.

[0101] In some specific embodiments, the fourth driving member 44 may be a linear motor, but the present application is not limited thereto. The fourth driving member 44 may also be an electric push rod, etc.

[0102] Reference Figure 1 、 Figure 11 and Figure 14In some embodiments of the present application, the scraping mechanism 4 may further include: a detection switch 45, a protective frame 46 and a controller. The protective frame 46 is pivotally connected to the second drive assembly 43. The protective frame 46 is arranged on the outside of the air disc 2 and the scraper 41. Specifically, the protective frame 46 is pivotally connected to the outer peripheral wall of the connecting frame 431. Along the radial direction of the circuit board carbon oil filling device 100 from the inside to the outside, the air disc 2 and the scraper 41 are both located on the inner side of the protective frame 46.

[0103] In addition, the protective frame 46 is engaged with the trigger part 451 of the detection switch 45, and the controller is communicatively connected with the detection switch 45, the first drive component 42 and the second drive component 43. When the protective frame 46 is driven to rotate around the pivot axis of the protective frame 46, the protective frame 46 triggers the trigger part 451, and the controller is used to control the first drive component 42 and the second drive component 43 to stop working according to the detection signal of the detection switch 45.

[0104] Specifically, when the first drive component 42 drives the scraper 41 and the protective frame 46 to move close to the sheet material, and the worker's hand is not separated from the sheet material, the worker's hand touches the protective frame 46 and drives the protective frame 46 to rotate around the pivot axis between the protective frame 46 and the connecting frame 431 close to the trigger part 451 of the detection switch 45. The protective frame 46 triggers the trigger part 451 of the detection switch 45, and the detection switch 45 generates a detection signal. The controller controls the first drive component 42 and the second drive component 43 to stop working according to the detection signal of the detection switch 45, thereby preventing the worker's hand from being scratched by the scraper 41, thereby improving the safety of the circuit board carbon oil filling equipment 100.

[0105] In addition, the protective frame 46 is tilted toward the trigger part 451 of the detection switch 45. This arrangement can avoid a dead point between the worker's hand and the protective frame 46, and prevent the protective frame 46 from being unable to rotate close to the trigger part 451 of the detection switch 45.

[0106] Furthermore, the connecting frame 431 is provided with a limiting member 436, which is matched with the protective frame 46 in a limiting manner. Figure 14 In the embodiment shown, along the second direction of the circuit board carbon oil filling hole device 100, the limit member 436 is located behind the protective frame 46, and the trigger portion 451 of the detection switch 45 is located in front of the protective frame 46. The limit member 436 is used to prevent the protective frame 46 from rotating around the pivot axis between the protective frame 46 and the connecting frame 431 close to the limit member 436, so that when the protective frame 46 touches the worker's hand, the protective frame 46 can only move toward the trigger portion 451 of the detection switch 45, thereby improving the working reliability of the circuit board carbon oil filling hole device 100. The second direction of the circuit board carbon oil filling hole device 100 can refer to Figure 1The front-to-back direction.

[0107] In some specific embodiments, the detection switch 45 may be a micro switch, but the present application is not limited thereto. The detection switch 45 may also be a pressure switch, etc.

[0108] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A circuit board carbon oil filling device, characterized in that: include: A mounting frame (1), wherein the mounting frame (1) defines a mounting space (11); An air disc (2), the air disc (2) being mounted on the mounting frame (1), the air disc (2) defining a ventilation space (21), the ventilation space (21) forming a ventilation hole (22) on the top wall of the air disc (2), and a sheet material being placed on the top wall of the air disc (2) and opposite to the ventilation hole (22); A blowing and suction assembly (3), wherein the blowing and suction assembly (3) is installed in the mounting frame (1), the blowing and suction assembly (3) comprises a fan (31) and a reversing member (32), the reversing member (32) comprises a fixed plate (321), a reversing plate (322) and a first driving member (323), the reversing plate (322) is slidably arranged on the fixed plate (321), the fixed plate (321) is provided with a first air outlet (3211) communicating with the ventilation space (21), the reversing plate (322) is provided with a first air inlet (3221) and a second air inlet (3222), the first air inlet (3221) is communicated with the air outlet end of the fan (31), and the second air inlet (3223) is communicated with the air outlet end of the fan (31). 2) is connected to the air inlet end of the fan (31), the first air inlet (3221) and the second air inlet (3222) are both suitable for being arranged opposite to and connected with the first air outlet (3211), the first driving member (323) is connected and cooperated with the reversing plate (322), and the first driving member (323) is used to drive the reversing plate (322) to move between a first position and a second position relative to the first air outlet (3211), in the first position, the second air inlet (3222) and the first air outlet (3211) are opposite to and connected, and in the second position, the first air inlet (3221) and the first air outlet (3211) are opposite to and connected.

2. The carbon oil filling device for circuit board according to claim 1, characterized in that: The blowing and suction assembly (3) further includes a silencer (33); the fixing plate (321) is provided with a second air outlet (3212) adapted to be opposite to and in communication with the first air inlet (3221); the second air outlet (3212) is in communication with the silencer (33); in the first position, the first air inlet (3221) and the second air outlet (3212) are arranged opposite to and in communication with each other; the silencer (33) is used to eliminate noise generated by gas.

3. The carbon oil filling device for circuit board according to claim 1, characterized in that: The blowing and suction assembly (3) further comprises a flow regulating member (34), an air shut-off valve (35) and a first connecting pipeline (36); the first connecting pipeline (36) is connected between the air inlet end of the blower (31) and the second air inlet (3222); the flow regulating member (34) and the air shut-off valve (35) are both arranged on the first connecting pipeline (36); the flow regulating member (34) is used to regulate the flow of gas in the first connecting pipeline (36); The outer peripheral wall of the air shutoff valve (35) has a third air inlet (351) suitable for communicating with the air inlet end of the fan (31). The air shutoff valve (35) is used to connect the air inlet end of the fan (31) and the air disk (2) and cut off the third air inlet (351) and the air inlet end of the fan (31), or connect the air inlet end of the fan (31) and the third air inlet (351) and cut off the air disk (2) and the air inlet end of the fan (31).

4. The carbon oil filling device for circuit board according to claim 1, characterized in that: The blowing and suction assembly (3) also includes a second connecting pipe (37), the ventilation holes (22) are multiple, and the multiple ventilation holes (22) are spaced apart along the radial direction of the circuit board carbon oil filling device (100), and a partition plate (23) is provided in the gas disk (2), and the partition plate (23) divides the ventilation space (21) into multiple sub-ventilation spaces (211) spaced apart along the radial direction of the circuit board carbon oil filling device (100), one end of the second connecting pipe (37) is connected to the first air outlet (3211), and the other end is provided with multiple third air outlets (371) spaced apart along the radial direction of the circuit board carbon oil filling device (100), and the multiple third air outlets (371) correspond one-to-one to the multiple sub-ventilation spaces (211) and are connected.

5. The carbon oil filling device for circuit board according to claim 1, characterized in that: A flow plate (24) is provided in the gas disk (2), and the flow plate (24) is provided with a plurality of flow holes (241) spaced apart along the radial direction of the circuit board carbon oil filling device (100), the flow holes (241) being suitable for allowing gas to pass through, and the flow plate (24) is used to evenly distribute the flow direction of the gas.

6. The carbon oil filling device for circuit board according to claim 1, characterized in that: Also includes: A scraping mechanism (4), the scraping mechanism (4) is arranged on the mounting frame (1), the scraping mechanism (4) includes a scraper (41), a first drive component (42), a second drive component (43) and a silk screen, the second drive component (43) is connected to the first drive component (42) and the scraper (41) in a transmission manner, the silk screen is arranged on the second drive component (43), the scraper (41) is located on the side of the silk screen away from the sheet material and is suitable for abutting against the silk screen, the first drive component (42) is used to drive the second drive component (43) to drive the scraper (41) and the silk screen to move closer to or away from the sheet material, and the second drive component (43) is used to drive the scraper (41) to move along the first direction of the circuit board carbon oil filling device (100).

7. The carbon oil filling device for circuit board according to claim 6, characterized in that: The first driving assembly (42) includes a second driving member (421), a connecting member (422) and a transmission rod (423). Along the height direction of the circuit board carbon oil filling device (100), one of the first driving assembly (42) and the second driving assembly (43) is located above the other, one end of the connecting member (422) is connected and cooperated with the second driving member (421), and the other end of the connecting member (422) is pivotally connected to one end of the transmission rod (423), and the other end of the transmission rod (423) is pivotally connected to the second driving assembly (43). The second driving member (421) is used to drive the connecting member (422) to drive the transmission rod (423) to rotate around the central axis of the second driving member (421), and drive the other end of the transmission rod (423) to rotate around the pivot axis between the transmission rod (423) and the second driving assembly (43), so that the transmission rod (423) drives the second driving assembly (43) to move closer to or away from the sheet material.

8. The carbon oil filling device for circuit board according to claim 6, characterized in that: The second driving assembly (43) comprises a connecting frame (431), a third driving member (432), a driving wheel (433), a driven wheel (434) and a transmission belt (435); the connecting frame (431) is connected to the first driving assembly (42) in a transmission manner; the third driving member (432) is arranged on the connecting frame (431); the driving wheel (433) and the driven wheel (434) are both pivotally mounted on the connecting frame (431); the transmission belt (435) is wound around The scraper (41) is connected and cooperated with the transmission belt (435) on the outer sides of the driving wheel (433) and the driven wheel (434), and the third driving member (432) is connected and cooperated with the driving wheel (433). The third driving member (432) is used to drive the driving wheel (433) to drive the transmission belt (435) to rotate, so that the transmission belt (435) drives the scraper (41) to move along the first direction of the circuit board carbon oil filling device (100).

9. The carbon oil filling device for circuit board according to claim 6, characterized in that: The scraping mechanism (4) further includes: a fourth driving member (44), the fourth driving member (44) is in transmission connection with the second driving assembly (43), the scraper (41) is connected and cooperated with the fourth driving member (44), and the fourth driving member (44) is used to drive the scraper (41) to move closer to or away from the screen printing screen.

10. The carbon oil filling device for circuit board according to claim 6, characterized in that: The scraping mechanism (4) further includes: a detection switch (45), a protective frame (46) and a controller, wherein the protective frame (46) is pivotally connected to the second drive assembly (43), and the protective frame (46) is arranged around the outside of the gas disc (2) and the scraper (41). The protective frame (46) is abutted against the trigger portion (451) of the detection switch (45). The controller is communicatively connected to the detection switch (45), the first drive assembly (42) and the second drive assembly (43). When the protective frame (46) is driven to rotate around the pivot axis of the protective frame (46), the protective frame (46) triggers the trigger portion (451). The controller is used to control the first drive assembly (42) and the second drive assembly (43) to stop working according to the detection signal of the detection switch (45).

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