Circuit board screen printing machine

Abstract

The utility model discloses a circuit board screen printing machine which comprises a machine frame, a cleaning mechanism and a screen printing mechanism, the machine frame is provided with a positioning assembly, the positioning assembly comprises a first fixed plate, a second fixed plate, a first movable plate and a second movable plate, and the first fixed plate and the first movable plate are arranged on the machine frame in the first direction. The second fixed plate and the second movable plate are arranged on the rack in the second direction, the first direction is perpendicular to the second direction, the first movable plate can move in the direction close to the first fixed plate, and the second movable plate can move in the direction close to the second fixed plate; the cleaning mechanism comprises an air pump and two air knives, the first fixing plate and the second fixing plate are each provided with an air blowing hole, the two air knives communicate with the air pump, and the air knives are arranged in the air blowing holes and used for blowing air to the circuit board; the screen printing mechanism is used for printing circuit boards. The positioning accuracy of the circuit board can be improved, impurities on the circuit board can be automatically removed, and the printing quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board manufacturing, in particular to a circuit board screen printing machine. Background Art

[0002] During the manufacturing process of circuit boards, characters need to be printed on the board surface to identify the various components and circuits on the board. The existing printing method mainly relies on manual printing through screen printing. However, the position of the circuit board is easy to shift, and the circuit board is easily adsorbed by dust and other impurities, resulting in defects such as deviation and breakage of the printed characters, affecting the production quality of the circuit board. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems in the prior art. To this end, the present invention provides a circuit board screen printer that can improve the positioning accuracy of the circuit board and automatically remove impurities on the circuit board, thereby improving production quality.

[0004] According to the first aspect of the present invention, the circuit board screen printing machine includes a frame, a cleaning mechanism and a screen printing mechanism, the frame is provided with a positioning assembly, the positioning assembly includes a first fixed plate, a second fixed plate, a first movable plate and a second movable plate, the first fixed plate and the first movable plate are both arranged on the frame along the first direction, the second fixed plate and the second movable plate are both arranged on the frame along the second direction, the first direction and the second direction are perpendicular to each other, the first movable plate can move in a direction close to the first fixed plate, and the second movable plate can move in a direction close to the second fixed plate; the cleaning mechanism includes an air pump and two air knives, the first fixed plate and the second fixed plate are both provided with blowing holes, the two air knives are both connected to the air pump, the air knives are arranged in the blowing holes, and the air knives are used to blow air to the circuit board; the screen printing mechanism is used to print the circuit board.

[0005] The circuit board screen printer according to the embodiment of the present invention has at least the following beneficial effects: the first fixed plate, the second fixed plate, the first movable plate and the second movable plate are all arranged on a frame, the circuit board is arranged on the frame, and then the first movable plate is driven to move in a direction close to the first fixed plate so that the circuit board abuts against the first fixed plate, and then the second movable plate is driven to move in a direction close to the second fixed plate so that the circuit board abuts against the second fixed plate, thereby being able to position the circuit board in the first direction and the second direction, so that the position of the circuit board is accurate. The first fixed plate and the second fixed plate are both provided with air blowing holes, and two air knives are respectively arranged on the first fixed plate and the second fixed plate, and the air knives are located in the air blowing holes so that the air flow blown by the air knives can be output from the air blowing holes, so that the air flow can blow away impurities adsorbed on the circuit board, so that the circuit board is kept clean, and the silk screen printing mechanism is convenient for printing the circuit board, thereby improving the printing quality of the circuit board.

[0006] According to some embodiments of the present invention, both the first movable plate and the second movable plate are provided with through holes, and the through holes are connected to the air knife.

[0007] According to some embodiments of the present invention, the cleaning mechanism also includes two adjusting rods, which are respectively fixed on the first fixed plate and the second fixed plate. The wind knife is provided with two clamping blocks, which are cooperatively sleeved on the adjusting rods. Both clamping blocks are penetrated by a first bolt, and the first bolt is threadedly connected to a first nut, which can abut against the clamping block.

[0008] According to some embodiments of the present invention, the adjusting rod is provided with a mounting seat, the mounting seat is penetrated by a second bolt, the first fixing plate and the second fixing plate are both provided with an adjustment groove in the vertical direction, the second bolt is slidably connected to the adjustment groove, the second bolt is threadedly connected with a second nut, and the second nut can abut against the mounting seat.

[0009] According to some embodiments of the present invention, the silk screen printing mechanism includes a lifting seat, a driving member, a silk screen and a scraper, the driving member and the silk screen are fixedly connected to the lifting seat, the lifting seat can move up and down, the scraper is arranged at the movable end of the driving member, the driving member is used to drive the scraper to move horizontally, and the scraper is in contact with the silk screen.

[0010] According to some embodiments of the present invention, the lifting seat is provided with a slide rail and two mounting slots, the slide rail is arranged in a horizontal direction, and the two mounting slots are slidably connected to the slide rail to clamp the wire mesh.

[0011] According to some embodiments of the present invention, the mounting groove is threadedly connected to a third screw rod, and the third screw rod can abut against the wire mesh.

[0012] According to some embodiments of the present invention, the screen printing mechanism further includes a controller and a safety grating, the safety grating being arranged on both sides of the lifting seat, and the safety grating and the lifting seat being electrically connected to the controller.

[0013] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0015] Figure 1 This is a front view of a circuit board screen printer according to an embodiment of the present invention;

[0016] Figure 2 yes Figure 1 A local enlarged view of point A;

[0017] Figure 3 This is a top view of a circuit board screen printer according to an embodiment of the present invention;

[0018] Figure 4 This is a schematic diagram of the installation of a cleaning mechanism of a circuit board screen printer according to an embodiment of the present invention;

[0019] Figure 5 This is a schematic diagram of the first movable plate of the circuit board screen printing machine according to an embodiment of the present invention.

[0020] Reference numerals:

[0021] Frame 100, positioning assembly 110, first fixed plate 111, second fixed plate 112, first movable plate 113, second movable plate 114, blowing hole 120, through hole 130, adjustment slot 140, cylinder 150;

[0022] Cleaning mechanism 200, air knife 210, clamping block 211, first bolt 212, first nut 213, adjusting rod 220, mounting seat 221, second bolt 222, second nut 223;

[0023] Screen printing mechanism 300 , lifting seat 310 , slide rail 311 , mounting groove 312 , third screw 313 , driving member 320 , screen 330 , scraper 340 , safety grating 350 . DETAILED DESCRIPTION

[0024] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0025] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0026] In the description of this utility model, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0027] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0028] It is understandable that, referring to Figure 1 、 Figure 3 and Figure 4 The circuit board screen printer of the present invention includes a frame 100, a cleaning mechanism 200 and a screen printing mechanism 300. The frame 100 is provided with a positioning assembly 110. The positioning assembly 110 includes a first fixed plate 111, a second fixed plate 112, a first movable plate 113 and a second movable plate 114. The first fixed plate 111 and the first movable plate 113 are both arranged on the frame 100 along a first direction, and the second fixed plate 112 and the second movable plate 114 are both arranged on the frame 100 along a second direction. Perpendicular to each other, the first movable plate 113 can move toward the direction close to the first fixed plate 111, and the second movable plate 114 can move toward the direction close to the second fixed plate 112; the cleaning mechanism 200 includes an air pump (not shown in the drawings) and two air knives 210, the first fixed plate 111 and the second fixed plate 112 are both provided with blowing holes 120, and the two air knives 210 are both connected to the air pump, and the air knives 210 are arranged in the blowing holes 120, and the air knives 210 are used to blow air onto the circuit board; the silk screen printing mechanism 300 is used for printing circuit boards.

[0029] The first fixed plate 111, the second fixed plate 112, the first movable plate 113 and the second movable plate 114 are all arranged on the frame 100. The circuit board is arranged on the frame 100, and then the first movable plate 113 is driven to move in the direction close to the first fixed plate 111 so that the circuit board abuts against the first fixed plate 111. Then the second movable plate 114 is driven to move in the direction close to the second fixed plate 112 so that the circuit board abuts against the second fixed plate 112, thereby positioning the circuit board in the first direction and the second direction, so that the position of the circuit board is accurate. The first fixed plate 111 and the second fixed plate 112 are both provided with air holes 120. Two air knives 210 are respectively arranged on the first fixed plate 111 and the second fixed plate 112, and the air knives 210 are located in the air holes 120. The air pump is connected to the air knives 210, and air can be output to the air holes 120 through the air knives 210. The air flow can blow away impurities adsorbed on the circuit board, keeping the circuit board clean, facilitating the silk screen printing mechanism 300 to print the circuit board, and improving the printing quality of the circuit board.

[0030] It should be noted that dust, debris and other impurities are easily absorbed on the circuit board, which may cause defects such as broken wires when printing, affecting the printing quality. By setting an air pump to output air flow to the wind knife 210, the air flow can blow away the impurities absorbed on the surface of the circuit board, keep the circuit board clean, facilitate the silk screen printing mechanism 300 to print the circuit board, and improve the printing quality.

[0031] In addition, the first movable plate 113 and the second movable plate 114 can both be driven by the cylinder 150, or by an electric push rod, a linear slide module, etc., so that the first movable plate 113 and the second movable plate 114 can both move in a straight line.

[0032] It is understandable that, referring to Figure 3 and Figure 5 The first movable plate 113 and the second movable plate 114 are each provided with a through hole 130, which interfaces with the air knife 210. The through holes 130 in the first movable plate 113 and the second movable plate 114 allow the airflow output by the air knife 210 to pass smoothly through the through holes 130, reducing the possibility of vortex formation in the airflow, ensuring smooth airflow, preventing impurities from remaining on the surface of the circuit board, and enhancing the cleaning effect of the circuit board.

[0033] In addition, by providing the through hole 130 , airflow can be driven to expel impurities from the through hole 130 , thereby preventing impurities from accumulating on the first movable plate 113 and the second movable plate 114 , thereby improving the cleanliness of the circuit board.

[0034] It is understandable that, referring to Figure 3 and Figure 4The cleaning mechanism 200 also includes two adjustment rods 220, which are respectively fixed to the first fixing plate 111 and the second fixing plate 112. The air knife 210 is provided with two clamping blocks 211, which are fitted on the adjustment rods 220. Both clamping blocks 211 are penetrated by a first bolt 212, and the first bolt 212 is threadedly connected to a first nut 213, which can abut against the clamping blocks 211. The adjustment rod 220 is fixed to the first fixing plate 111 or the second fixing plate 111, and the two clamping blocks 211 are fixed to the air knife 210. The two clamping blocks 211 are fitted on the adjustment rod 220, which can facilitate the adjustment of the angle of the air knife 210. The first bolt 212 passes through two clamping blocks 211, and the first bolt 212 is threadedly connected to the first nut 213. By screwing the first nut 213 into the first bolt 212, the first bolt 212 and the first nut 213 cooperate to drive the two clamping blocks 211 closer to each other, so that the two clamping blocks 211 can be clamped on the adjusting rod 220, which is convenient for locking the position of the wind knife 210 and reducing the possibility of shaking of the position of the wind knife 210.

[0035] It should be noted that the two clamping blocks 211 are arranged as a group, and multiple groups of clamping blocks 211 are spaced apart along the length of the air knife 210 to stabilize the air knife 210 on the adjustment rod 220 and ensure that the air knife 210 is subjected to stable force. By unscrewing the first nut 213, the two clamping blocks 211 can be rotated on the adjustment rod 220, thereby adjusting the position of the air knife 210. Then, the first nut 213 is screwed into the first bolt 212, so that the first bolt 212 and the first nut 213 drive the two clamping blocks 211 closer to each other, so that the two clamping blocks 211 are fixed to the adjustment rod 220, making it convenient to adjust the angle of the air knife 210 and to remove impurities adsorbed on the circuit board.

[0036] Specifically, refer to Figure 1 and Figure 4The adjusting rod 220 is provided with a mounting seat 221, and the mounting seat 221 is penetrated by a second bolt 222. The first fixing plate 111 and the second fixing plate 112 are both provided with an adjusting groove 140 in the vertical direction. The second bolt 222 is slidably connected to the adjusting groove 140. The second bolt 222 is threadedly connected with a second nut 223, and the second nut 223 can abut against the mounting seat 221. The first fixing plate 111 and the second fixing plate 112 are both provided with an adjustment slot 140 in the vertical direction, and the adjustment rod 220 is fixedly connected to the mounting seat 221. The mounting seat 221 is penetrated by a second bolt 222. By setting the second bolt 222 in the adjustment slot 140, the second bolt 222 can move along the length direction of the adjustment slot 140, so that the height of the adjustment rod 220 can be conveniently adjusted, and then the second nut 223 is screwed into the second bolt 222 to fix the position of the second bolt 222, so that the mounting seat 221 can be fixed on the first fixing plate 111 or the second fixing plate 112, so as to facilitate the adjustment of the position of the wind knife 210, so that the wind knife 210 can be docked with the blowing hole 120, thereby improving the adjustment convenience of the wind knife 210.

[0037] It should be noted that the two clamps 211 can be rotated on the adjusting rod 220 to facilitate the adjustment of the angle of the wind knife 210, but it is easy to cause the wind knife 210 to be misaligned with the blowing hole 120. By setting the mounting seat 221, it can be adjusted in the vertical direction so that the wind knife 210 can be docked with the blowing hole 120, thereby improving the adjustment flexibility of the wind knife 210.

[0038] Specifically, refer to Figure 1 The screen printing mechanism 300 includes a lifting base 310, a driving member 320, a screen 330, and a scraper 340. The driving member 320 and the screen 330 are both fixedly connected to the lifting base 310, and the lifting base 310 can move up and down. The scraper 340 is arranged at the movable end of the driving member 320. The driving member 320 is used to drive the scraper 340 to move horizontally, and the scraper 340 abuts against the screen 330. The screen 330 and the driving member 320 are both fixedly connected to the lifting base 310, and the scraper 340 is arranged at the movable end of the driving member 320. The screen 330 is arranged horizontally and below the scraper 340. The lifting base 310 can move up and down so that the screen 330 can abut against the circuit board. The scraper 340 is then driven by the driving member 320 to slide on the screen 330 to achieve automatic printing of the circuit board, which can replace manual operation and improve printing efficiency.

[0039] It should be noted that the lifting seat 310 can be driven by a linear cylinder, a linear oil cylinder, a linear slide module, etc.; the driving component 320 can be a linear cylinder, a linear slide module, etc., which are not described in detail here.

[0040] Specifically, refer to Figure 1 and Figure 2The lifting base 310 is provided with a slide rail 311 and two mounting slots 312. The slide rail 311 is arranged in the horizontal direction. The two mounting slots 312 are slidably connected to the slide rail 311 to clamp the screen 330. The slide rail 311 is fixed to the lifting base 310 and is arranged in the horizontal direction. By providing the mounting slots 312, which are slidably connected to the slide rail 311, the two mounting slots 312 can be moved closer to or farther away from each other, thereby conveniently adjusting the spacing between the two mounting slots 312 to accommodate screens 330 of different sizes, facilitating the printing of circuit boards of different sizes, and improving the applicability of the circuit board screen printer.

[0041] Specifically, refer to Figure 1 and Figure 2 The mounting groove 312 is threadedly connected to a third screw 313, and the third screw 313 can abut the screen 330. The third screw 313 is provided through the side wall of the mounting groove 312, and the third screw 313 is threadedly connected to the mounting groove 312. By screwing the third screw 313 into the mounting groove 312, the third screw 313 abuts against the screen 330, thereby pressing the screen 330 tightly into the mounting groove 312, so that the screen 330 can be stabilized in the mounting groove 312, preventing the screen 330 from shaking, and improving the printing quality of the circuit board screen printer.

[0042] Specifically, refer to Figure 1 The screen printing mechanism 300 also includes a controller and a safety light barrier 350. The safety light barriers 350 are arranged on both sides of the lifting platform 310 and are both electrically connected to the controller. The safety light barriers 350 are arranged on both sides of the lifting platform 310 and are both electrically connected to the controller. The safety light barriers 350 can detect foreign objects, prevent the lifting platform 310 from being blocked by foreign objects during its movement, and improve the movement reliability of the lifting platform 310.

[0043] It should be noted that the safety light grid 350 includes a transmitter and a receiver, which are respectively arranged on both sides of the lifting base 310. The transmitter can transmit signals to the receiver, and the receiver can receive the signals sent by the transmitter. When foreign objects are located between the transmitter and the receiver, the foreign objects can block the signals sent by the transmitter, so that the receiver cannot receive the signals. The controller then controls the lifting base 310 to stop, avoiding collision between the lifting base 310 and foreign objects, thereby improving the reliability and safety of the circuit board screen printing machine.

[0044] The controller may be a single chip microcomputer, a programmable logic controller, or an industrial computer, which will not be detailed here.

[0045] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. Circuit board screen printing machine, characterized in that, include: A frame is provided with a positioning assembly, the positioning assembly including a first fixed plate, a second fixed plate, a first movable plate, and a second movable plate, the first fixed plate and the first movable plate are both arranged on the frame along a first direction, the second fixed plate and the second movable plate are both arranged on the frame along a second direction, the first direction and the second direction are perpendicular to each other, the first movable plate can move in a direction close to the first fixed plate, and the second movable plate can move in a direction close to the second fixed plate; The cleaning mechanism includes an air pump and two air knives. The first fixing plate and the second fixing plate are both provided with air blowing holes. The two air knives are both connected to the air pump. The air knives are arranged in the air blowing holes and are used to blow air toward the circuit board. A silk screen printing mechanism is used for printing the circuit board.

2. The circuit board screen printer according to claim 1, characterized in that: The first movable plate and the second movable plate are both provided with through holes, and the through holes are connected to the air knife.

3. The circuit board screen printer according to claim 1, characterized in that: The cleaning mechanism also includes two adjusting rods, which are respectively fixed on the first fixing plate and the second fixing plate. The wind knife is provided with two clamping blocks, which are fitted on the adjusting rods. Both clamping blocks are penetrated by a first bolt, and the first bolt is threadedly connected to a first nut, which can abut against the clamping block.

4. The circuit board screen printer according to claim 3, characterized in that: The adjusting rod is provided with a mounting seat, the mounting seat is penetrated by a second bolt, the first fixing plate and the second fixing plate are both provided with an adjustment groove in the vertical direction, the second bolt is slidably connected to the adjustment groove, the second bolt is threadedly connected to a second nut, and the second nut can abut against the mounting seat.

5. The circuit board screen printer according to claim 1, characterized in that: The screen printing mechanism includes a lifting seat, a driving member, a screen and a scraper. The driving member and the screen are fixedly connected to the lifting seat. The lifting seat can move up and down. The scraper is arranged at the movable end of the driving member. The driving member is used to drive the scraper to move horizontally, and the scraper is in contact with the screen.

6. The circuit board screen printer according to claim 5, characterized in that: The lifting seat is provided with a slide rail and two mounting grooves. The slide rail is arranged in a horizontal direction. The two mounting grooves are slidably connected to the slide rail to clamp the wire mesh.

7. The circuit board screen printer according to claim 6, characterized in that: The mounting groove is threadedly connected to a third screw rod, and the third screw rod can abut against the wire mesh.

8. The circuit board screen printer according to claim 5, characterized in that: The screen printing mechanism further includes a controller and a safety grating. The safety grating is arranged on both sides of the lifting seat. Both the safety grating and the lifting seat are electrically connected to the controller.

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