A double-sided fully automatic inkjet printer for PCB boards

Abstract

The present invention discloses a double-sided fully automatic inkjet printer for PCB boards, and relates to the technical field of inkjet printer for PCB boards. The device specifically comprises a base, one side of which is connected to a fixed platform via a mounting plate, and a loading mechanism is provided inside the fixed platform. The top of the base is slidably connected to a movable base, and an electric guide rail is provided inside the movable base. The top of the movable base is bolted to an electric base, and the top outer wall of the electric base is rotatably connected to a mechanical swing arm, the end of the mechanical swing arm is fixedly connected to a rotating arm, and the rotating end of the rotating arm is provided with an inkjet printer mechanism. The front outer wall of the movable base is threadedly connected to two infrared receivers. The loading mechanism comprises a mounting frame, a fixing assembly, a first infrared transmitter, a receiving frame, a bottom plate, a second infrared transmitter, a rotating shaft, a connecting plate, and a lithium battery. The entire process of the present invention does not require frequent manual operation, and the system can automatically count and judge the number of infrared dockings and start and control the servo motor.

Description

Technical Field

[0001] The present invention relates to the technical field of PCB board coding, and in particular to a double-sided fully automatic coding device for a PCB board. Background Art

[0002] With the rapid development of the electronics industry, printed circuit boards (PCBs), as a crucial component of electronic equipment, are receiving increasing attention for their production processes and quality control. Inkjet printing technology, as a key identification and tracking tool in the PCB manufacturing process, has become an indispensable component. Traditional inkjet printing methods often rely on manual operation, which is not only inefficient but also prone to errors, making it difficult to meet the high-precision and high-efficiency requirements of modern production. The emergence of double-sided fully automatic inkjet printing technology has greatly improved the automation level of PCB production. This technology can simultaneously print on both sides of the PCB, ensuring that each circuit board is accurately labeled with information such as production batch, date, and serial number, thereby enabling full product lifecycle traceability. Furthermore, double-sided fully automatic inkjet printing effectively reduces labor costs and human errors, thereby improving production efficiency. In modern manufacturing, companies face increasingly stringent quality management standards and market competition. Implementing a double-sided fully automatic inkjet printing system not only improves product quality but also enhances their market competitiveness. This efficient and precise coding method allows companies to better meet customer needs and increase the added value of their products.

[0003] After searching, the invention with Chinese patent publication number CN212889515U discloses a coding jig for PCB boards, which relates to the technical field of jig equipment. The key points of its technical solution include a frame, the inner top wall of the frame is fixedly connected with two pushing components, the bottom of the pushing component is fixedly connected with a second locking block, the inner wall of the frame is provided with a strip groove, and a rotating seat is embedded and installed on the right side of the inner wall of the strip groove. By setting up the pushing component, the second locking block can be driven to automatically fix the PCB board to ensure that the vertical surface does not move. By setting up a storage plate, impurities can be prevented from falling directly onto the workbench or residual paint can be sprayed to the outside of the device, reducing the labor intensity of workers in cleaning. The coding jig for PCB boards in the above invention has the following shortcomings:

[0004] Although the above-mentioned device can drive the first locking block to lock both sides of the PCB board by providing a threaded sleeve, thereby preventing the PCB board from moving during the coding process, and making the device applicable to PCB boards of different widths, thereby expanding the scope of application of the device, it is unable to implement coding on the other side of the PCB, resulting in insufficient information when tracking and managing products, affecting product traceability. Therefore, there is an urgent need for a double-sided fully automatic coding device for PCB boards. Summary of the Invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a double-sided fully automatic coding device for PCB boards.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A double-sided fully automatic coding device for a PCB board comprises a base, one side of the base is connected to a fixed platform via a mounting plate, a loading mechanism is provided on the inner side of the fixed platform, the top of the base is slidably connected to a movable base, an electric guide rail is provided on the inner side of the movable base, the top of the movable base is connected to an electric base via bolts, a mechanical swing arm is rotatably connected to the outer wall of the top of the electric base, the end of the mechanical swing arm is fixedly connected to a rotating arm, the rotating end of the rotating arm is provided with a coding mechanism, and two infrared receivers are connected to the outer wall of the front side of the movable base via threads.

[0008] Preferably: the loading mechanism includes a mounting frame, a fixing assembly, a first infrared emitter, a receiving frame, a base plate, a second infrared emitter, a rotating shaft, a connecting plate and a lithium battery, and a mounting hole is opened in the center of the fixing platform, and the inner sides of both ends of the fixing platform are connected to the fixing plates by bolts, a mounting groove is opened on the top of one of the fixing plates, and a servo motor is connected to the mounting groove by bolts, one of the rotating shafts is rotatably connected to one side of the fixing platform through a bearing, and the other rotating shaft is connected to the output end of the servo motor by a thread.

[0009] Furthermore: a connecting plate is fixedly connected to the opposite side of the rotating shaft, the mounting frame and the base plate are respectively connected to the top and bottom of the connecting plate by bolts, the fixing components are evenly distributed and fixedly connected to the outer wall of the middle top of the mounting frame, and the infrared emitters are evenly fixedly connected to the top outer wall of the mounting frame on the side close to the fixing components.

[0010] Based on the above scheme: the receiving frame is fixedly connected to the inner side of the mounting frame, infrared emitter 2 is fixedly connected to the bottom middle outer wall of the base plate at equal distances, and the distance between every two adjacent infrared emitters 1 and every two adjacent infrared emitters 2 is the same as the distance between the two infrared receivers, and the lithium batteries are bonded to the bottom middle outer wall of the base plate at equal distances.

[0011] A better solution among the above solutions is: the fixing assembly includes a magnetic base, a spring column, a T-shaped pressure plate, a U-shaped plate, a pressing seat, guide shaft one and guide shaft two, and the top middle outer wall of the mounting frame is respectively provided with grooves distributed at equal distances, and each magnetic base is magnetically attracted in each groove.

[0012] As a further solution of the present invention: the spring column is bonded to the top of the magnetic base, and the pressing seat is connected to the top of the spring column through a thread, the U-shaped plate is bonded to the outer walls on both sides of the top of the magnetic base, and the second guide shaft is inserted and fixed on both sides of the top of the U-shaped plate.

[0013] At the same time, the two sides of the pressing seat are provided with card slots, and the guide shaft 1 is carded in the card slots. The ends of the T-shaped pressure plate are respectively provided with two rotating holes, and the two rotating holes are respectively sleeved and rotated on the circumference of the guide shaft 1 and the guide shaft 2.

[0014] As a preferred embodiment of the present invention, the coding mechanism includes a coding terminal, a liquid guide tube, a liquid supply pump and a liquid tank, and the liquid tank is connected to the output end of the rotating arm by bolts.

[0015] At the same time, the liquid guide pipe is fixedly connected to the bottom of the liquid tank, and the spray terminal is connected to the bottom of the liquid supply pump through a mounting ring.

[0016] As a more optimal solution of the present invention: the spray terminal is connected to the liquid supply pump through a liquid guide tube, and the top of the liquid supply pump is connected to the bottom of the liquid tank through a conduit.

[0017] The beneficial effects of the present invention are:

[0018] 1. This double-sided fully automatic coding device for PCB boards starts the electric guide rail to drive the moving base to slide horizontally on the top of the base, and the infrared receiver located on the front of the moving base also moves synchronously. When the two infrared receivers are aligned with the infrared transmitter, the moving base is started to drive the mechanical swing arm to rotate. The swing and rotation of the mechanical swing arm and the rotating arm drive the coding mechanism to code the target PCB board. After the infrared receiver and the infrared transmitter have docked eight times, the servo motor is started to drive the mounting frame and the base plate to flip 180 degrees. At this time, the electric guide rail drives the moving base to return. When the infrared receiver and the infrared transmitter are aligned, the moving base is started to drive the mechanical swing arm and the rotating arm to work. At the same time, the coding mechanism starts to code the back of the PCB board. This promotes automatic double-sided coding of the PCB board, solves the problem of insufficient information when tracking and managing products due to traditional single-sided coding, which affects product traceability, realizes the double-sided automatic coding function of the PCB board, and improves the accuracy of the PCB board coding.

[0019] 2. This double-sided fully automatic coding device for PCB boards starts the liquid supply pump to suck out the ink in the liquid tank and injects it into the inkjet printer terminal through the liquid guide tube. The PCB board is coded through the inkjet printer terminal, which improves the efficiency and quality of PCB coding.

[0020] 3. This fully automatic double-sided coding device for PCBs eliminates the need for frequent manual operation. The system automatically counts and determines the number of infrared docking attempts, as well as activates and controls the servo motor. For example, on large-scale PCB production lines, manual operation is inefficient and prone to errors. This automated process, however, operates continuously and stably, significantly reducing labor costs and human error. Once the system is activated, it cycles continuously according to a pre-set program, achieving continuous coding on both the front and back sides of PCBs, improving production continuity and fluidity. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the main structure of a double-sided fully automatic inkjet printer for PCB boards proposed by the present invention;

[0022] Figure 2 This is a side structural schematic diagram of a double-sided fully automatic inkjet printer for PCB boards proposed by the present invention;

[0023] Figure 3 This is a schematic diagram of the top view of the double-sided fully automatic inkjet printer for PCB boards proposed by the present invention;

[0024] Figure 4 This is a structural schematic diagram of the coding mechanism in a double-sided fully automatic coding device for PCB boards proposed by the present invention;

[0025] Figure 5 This is a schematic diagram of the top view of the loading mechanism in the double-sided fully automatic inkjet coding device for PCB boards proposed by the present invention;

[0026] Figure 6 This is a schematic diagram of the first partial structure of the loading mechanism in the double-sided fully automatic inkjet coding device for PCB boards proposed by the present invention;

[0027] Figure 7 This is a structural schematic diagram of the second part of the loading mechanism in the double-sided fully automatic inkjet coding device for PCB boards proposed by the present invention;

[0028] Figure 8 This is a structural schematic diagram of the fixed components in a double-sided fully automatic inkjet coding device for PCB boards proposed by the present invention.

[0029] Figure: 1, mounting plate; 2, base; 3, electric guide rail; 4, moving base; 5, electric base; 6, mechanical swing arm; 7, rotating arm; 8, inkjet printing mechanism; 9, fixed platform; 10, loading mechanism; 11, servo motor; 12, infrared receiver; 13, fixed plate; 801, inkjet terminal; 802, liquid guide tube; 803, liquid supply pump; 804, liquid tank; 1001, mounting frame; 1002, fixed assembly Parts; 1003, infrared emitter 1; 1004, supporting frame; 1005, bottom plate; 1006, infrared emitter 2; 1007, rotating shaft; 1008, connecting plate; 1009, lithium battery; 10021, magnetic base; 10022, spring column; 10023, T-shaped pressure plate; 10024, U-shaped plate; 10025, pressing seat; 10026, guide shaft 1; 10027, guide shaft 2. DETAILED DESCRIPTION

[0030] The technical solution of the present invention will be further described in detail below in conjunction with specific implementation methods.

[0031] 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.

[0032] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0033] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," and "disposed" should be understood in a broad sense. For example, they may refer to fixed connection or disposition, detachable connection or disposition, or integral connection or disposition. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0034] Example 1:

[0035] A double-sided fully automatic inkjet printer for PCB boards, such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8 As shown, it includes a base 2, one side of the base 2 is connected to a fixed platform 9 through a mounting plate 1, and a loading mechanism 10 is provided inside the fixed platform 9, the top of the base 2 is slidably connected to a movable base 4, and an electric guide rail 3 is provided inside the movable base 4, the top of the movable base 4 is connected to an electric base 5 by bolts, and the top outer wall of the electric base 5 is rotatably connected to a mechanical swing arm 6, the end of the mechanical swing arm 6 is fixedly connected to a rotating arm 7, and the rotating end of the rotating arm 7 is provided with a coding mechanism 8, and the front outer wall of the movable base 4 is connected to two infrared receivers 12 by threads;

[0036] The model of the electric guide rail 3 is EGH15, the model of the electric base 5 is Lexium MDrive 23, the model of the mechanical swing arm 6 is KR 16R1610-2, the model of the rotating arm 7 is IRB 6700, and the model of the infrared receiver 12 is HS0038B.

[0037] In order to promote the automatic double-sided coding of PCB boards and solve the problem of insufficient information in tracking and managing products caused by traditional single-sided coding, which affects the traceability of products; Figure 5 、 Figure 6 、 Figure 7 and Figure 8 As shown, the loading mechanism 10 includes a mounting frame 1001, a fixing assembly 1002, an infrared emitter 1003, a receiving frame 1004, a bottom plate 1005, an infrared emitter 2 1006, a rotating shaft 1007, a connecting plate 1008 and a lithium battery 1009, and a mounting hole is opened in the center of the fixing platform 9, and the inner sides of both ends of the fixing platform 9 are connected to the fixing plates 13 by bolts, and a mounting groove is opened on the top of one of the fixing plates 13, and a servo motor 11 is connected to the mounting groove by bolts, and one of the rotating shafts 1007 is rotatably connected to one side of the fixing platform 9 through a bearing, and the other rotating shaft 1007 is connected to the output end of the servo motor 11 by a thread;

[0038] A connecting plate 1008 is fixedly connected to the opposite side of the rotating shaft 1007. The mounting frame 1001 and the base plate 1005 are respectively connected to the top and bottom of the connecting plate 1008 by bolts. The fixing components 1002 are evenly distributed and fixedly connected to the outer wall of the middle top of the mounting frame 1001. The infrared emitter 1003 is evenly fixedly connected to the top outer wall of the mounting frame 1001 on the side close to the fixing components 1002.

[0039] The receiving frame 1004 is fixedly connected to the inner side of the mounting frame 1001, and the second infrared emitter 1006 is fixedly connected to the bottom middle outer wall of the bottom plate 1005 at an equal distance, and the distance between every two adjacent first infrared emitters 1003 and every two adjacent second infrared emitters 1006 is the same as the distance between two infrared receivers 12;

[0040] The lithium batteries 1009 are bonded to the bottom middle outer wall of the bottom plate 1005 at equal distances. The models of the infrared emitter 1 1003 and the infrared emitter 2 1006 are TSAL6200, and the model of the servo motor 11 is MSMF042L1U2M.

[0041] The fixing assembly 1002 includes a magnetic base 10021, a spring column 10022, a T-shaped pressure plate 10023, a U-shaped plate 10024, a pressing seat 10025, a guide shaft 10026, and a guide shaft 2 10027. The top middle outer wall of the mounting frame 1001 is respectively provided with grooves distributed at equal distances, and each magnetic base 10021 is magnetically attracted to each groove.

[0042] The spring column 10022 is bonded to the top of the magnetic base 10021, and the pressing seat 10025 is connected to the top of the spring column 10022 through a thread. The U-shaped plate 10024 is bonded to the outer walls on both sides of the top of the magnetic base 10021, and the second guide shaft 10027 is inserted and fixed on both sides of the top of the U-shaped plate 10024;

[0043] The pressing seat 10025 has two sides with slots, and the guide shaft 10026 is snapped into the slots. The ends of the T-shaped pressing plate 10023 are respectively provided with two rotating holes, which are respectively sleeved and rotated on the circumference of the guide shaft 10026 and the guide shaft 2 10027;

[0044] During operation, the magnetic base 10021 is adsorbed into each groove on the top of the installation frame 1001, and the pressing seat 10025 is squeezed to drive the T-shaped pressure plate 10023 to tilt up. At this time, the spring column 10022 contracts, and the two PCB boards are placed on the receiving frame 1004 in the installation frame 1001. The pressing seat 10025 is released to drive the T-shaped pressure plates 10023 on both sides downward to clamp and fix the sides of the PCB boards. At this time, the spring column 10022 is curved, ensuring the stability of the T-shaped pressure plate 10023 when the inkjet printer is turned over;

[0045] Next, the electric guide rail 3 is started to drive the moving seat 4 to slide horizontally on the top of the base 2, and the infrared receiver 12 located on the front of the moving seat 4 also moves synchronously. When the two infrared receivers 12 are aligned with the infrared transmitter 1003, the moving seat 4 is started to drive the mechanical swing arm 6 to rotate. The swing and rotation of the mechanical swing arm 6 and the rotating arm 7 drive the inkjet mechanism 8 to inkjet the target PCB board. After the infrared receiver 12 and the infrared transmitter 1003 are docked eight times, the servo motor 11 is started to drive the mounting frame 1001 and the bottom plate 1005 to flip Turn 180 degrees, at this time the electric guide rail 3 drives the moving base 4 to return, and when the infrared receiver 12 is aligned with the infrared transmitter 1006, the moving base 4 is started to drive the mechanical swing arm 6 and the rotating arm 7 to work, and at the same time the coding mechanism 8 is started to code the back of the PCB board, thereby promoting the automatic double-sided coding of the PCB board, solving the problem of insufficient information when tracking and managing products due to traditional single-sided coding, affecting the traceability of the products, realizing the double-sided automatic coding function of the PCB board, and improving the efficiency and quality of the PCB board coding.

[0046] In order to facilitate the coding of PCB boards; Figure 4 As shown, the coding mechanism 8 includes a spray terminal 801, a liquid guide tube 802, a liquid supply pump 803 and a liquid tank 804, and the liquid tank 804 is connected to the output end of the rotating arm 7 by bolts, and the liquid guide tube 802 is fixedly connected to the bottom of the liquid tank 804, and the spray terminal 801 is connected to the bottom of the liquid supply pump 803 by a mounting ring;

[0047] The spray terminal 801 is connected to the liquid supply pump 803 through a liquid guide tube 802, and the top of the liquid supply pump 803 is connected to the bottom of the liquid tank 804 through a conduit;

[0048] By starting the liquid supply pump 803, the ink in the liquid tank 804 is sucked out and injected into the inkjet printer 801 through the liquid guide tube 802, and the PCB board is stenciled through the inkjet printer 801;

[0049] The model of the spray terminal 801 is Imaje9030, and the model of the liquid supply pump 803 is Norval NF100.

[0050] Example 2:

[0051] A double-sided fully automatic inkjet printer for PCB boards, such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8As shown, after the infrared receiver 12 and the infrared transmitter 1003 are docked eight times, the servo motor 11 is started to drive the mounting frame 1001 and the base plate 1005 to flip 180 degrees, realizing automatic flipping of the PCB and ensuring high efficiency and high accuracy of inkjet printing. The specific process is as follows:

[0052] Setting C: infrared docking times counter, initial value C = 0;

[0053] Set S: servo motor 11 control signal, S = 0 means not to start, S = 1 means to start;

[0054] Set D: infrared docking detection signal, D = 0 means not docked, D = 1 means docked;

[0055] Set N: the number of pulses to be sent to the servo motor;

[0056] Set Δθ: the angle (degrees / pulse) that the servo motor rotates each time it receives a pulse;

[0057] Set Θ: the target angle the servo motor needs to rotate, here Θ = 180°;

[0058] Infrared docking counts are as follows:

[0059] Each time an infrared docking signal is detected, the formula of counter C is: Among them, C old is the counter value before update, C new is the updated counter value;

[0060] The start-up judgment of the servo motor 11 is as follows:

[0061] When the value of the counter C reaches 8, the servo motor 11 is started. The formula is:

[0062] The servo motor pulse number is calculated as follows:

[0063] According to the servo motor's rotation angle per pulse Δθ and the target rotation angle Θ, calculate the number of pulses N that need to be sent:

[0064] The count is reset as follows:

[0065] When the servo motor starts, the counter C is reset to 0 for the next round of counting:

[0066] In summary:

[0067] Initial state: C=0, S=0;

[0068] Cycle process:

[0069] 1. Detect infrared docking signal D; 2. Update C according to the infrared docking counting formula; 3. Determine the value of S according to the servo motor start judgment formula; 4. If S = 1, calculate N according to the servo motor pulse number calculation formula, send NN pulse signals to the servo motor, and reset C to 0 according to the count reset formula; 5. Return to step 1 and continue the loop.

[0070] This eliminates the need for frequent manual operation throughout the entire process. The system automatically counts and determines the number of infrared docking attempts, as well as activates and controls the servo motor. For example, on large-scale PCB production lines, manual operation is inefficient and prone to errors. This automated process, however, operates continuously and stably, significantly reducing labor costs and human error. Once the system is activated, it cycles continuously according to a pre-set program, achieving continuous coding on both the front and back of PCBs, improving production continuity and fluidity.

[0071] When this embodiment is used,.

[0072] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A double-sided fully automatic inkjet printer for a PCB board, comprising a base (2), characterized in that: One side of the base (2) is connected to a fixed platform (9) via a mounting plate (1), and a loading mechanism (10) is provided inside the fixed platform (9); the top of the base (2) is slidably connected to a movable seat (4), and an electric guide rail (3) is provided inside the movable seat (4); the top of the movable seat (4) is connected to an electric base (5) via bolts, and the top outer wall of the electric base (5) is rotatably connected to a mechanical swing arm (6); the end of the mechanical swing arm (6) is fixedly connected to a rotating arm (7), and a coding mechanism (8) is provided at the rotating end of the rotating arm (7); and the front outer wall of the movable seat (4) is connected to two infrared receivers (12) via threads; The loading mechanism (10) comprises a mounting frame (1001), a fixing assembly (1002), an infrared emitter 1 (1003), a receiving frame (1004), a bottom plate (1005), an infrared emitter 2 (1006), a rotating shaft (1007), a connecting plate (1008) and a lithium battery (1009), and a mounting hole is provided at the center of the fixing platform (9), and the inner sides of both ends of the fixing platform (9) are connected to the fixing plates (13) by bolts, a mounting groove is provided at the top of one of the fixing plates (13), and a servo motor (11) is connected to the mounting groove by bolts, one of the rotating shafts (1007) is rotatably connected to one side of the fixing platform (9) by a bearing, and the other rotating shaft (1007) is connected to the output end of the servo motor (11) by a thread; The fixing assembly (1002) includes a magnetic base (10021), a spring column (10022), a T-shaped pressure plate (10023), a U-shaped plate (10024), a pressing seat (10025), a guide shaft 1 (10026) and a guide shaft 2 (10027), and the top middle outer wall of the mounting frame (1001) is respectively provided with grooves distributed at equal distances, and each magnetic base (10021) is magnetically attracted in each groove; the spring column (10022) is bonded to the top of the magnetic base (10021), and the pressing seat (1002 5) The U-shaped plate (10024) is connected to the top of the spring column (10022) through a thread, and is bonded to the outer walls on both sides of the top of the magnetic base (10021). The second guide shaft (10027) is inserted and fixed on both sides of the top of the U-shaped plate (10024); slots are provided on both sides of the pressing seat (10025), and the guide shaft 1 (10026) is snapped into the slots. Two rotating holes are respectively provided at the ends of the T-shaped pressing plate (10023), and the two rotating holes are respectively sleeved and rotated on the circumference of the guide shaft 1 (10026) and the guide shaft 2 (10027).

2. The double-sided fully automatic inkjet printer for PCB boards according to claim 1, characterized in that: A connecting plate (1008) is fixedly connected to the opposite side of the rotating shaft (1007); the mounting frame (1001) and the base plate (1005) are respectively connected to the top and bottom of the connecting plate (1008) by bolts; the fixing components (1002) are fixedly connected to the outer wall of the middle top of the mounting frame (1001) at equal distances; and the infrared emitter (1003) is fixedly connected to the outer wall of the top of the mounting frame (1001) on the side close to the fixing component (1002) at equal distances.

3. The double-sided fully automatic inkjet printer for PCB boards according to claim 1, characterized in that: The receiving frame (1004) is fixedly connected to the inner side of the mounting frame (1001), the infrared emitter 2 (1006) is fixedly connected to the bottom middle outer wall of the base plate (1005) at an equal distance, and the distance between every two adjacent infrared emitters 1 (1003) and every two adjacent infrared emitters 2 (1006) is the same as the distance between the two infrared receivers (12), and the lithium battery (1009) is bonded to the bottom middle outer wall of the base plate (1005) at an equal distance.

4. The double-sided fully automatic inkjet printer for PCB boards according to claim 1, characterized in that: The coding mechanism (8) comprises a coding terminal (801), a liquid guide tube (802), a liquid supply pump (803) and a liquid tank (804), and the liquid tank (804) is connected to the output end of the rotating arm (7) via bolts.

5. The double-sided fully automatic inkjet printer for PCB boards according to claim 4, characterized in that: The liquid guide tube (802) is fixedly connected to the bottom of the liquid tank (804), and the spray terminal (801) is connected to the bottom of the liquid supply pump (803) through a mounting ring.

6. The double-sided fully automatic inkjet printer for PCB boards according to claim 4, characterized in that: The spray terminal (801) is connected to the liquid supply pump (803) via a liquid guide tube (802), and the top of the liquid supply pump (803) is connected to the bottom of the liquid tank (804) via a conduit.

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