PCB inkjet printing equipment

Abstract

This utility model discloses a PCB inkjet printing device, including a machine base and an inkjet printing head mounted on the machine base via a three-axis motion gantry. It also includes two oppositely arranged fixed feed plates and a sliding feed plate disposed on one side of the machine base. The fixed and sliding feed plates are equipped with feeding components for feeding PCB boards. Each feeding component includes multiple rotating shafts rotatably connected to opposite sides of the fixed and sliding feed plates. Conveyor rollers are fixedly connected to the sidewalls of each rotating shaft. The fixed and sliding feed plates are each equipped with anti-deviation components to prevent the PCB boards from deviating during transport. This utility model, through the feeding components, achieves automatic and continuous feeding of PCB boards while using anti-deviation components to correct the position of the PCB boards during transport, thereby ensuring the correctness of the PCB board's transport position.

Description

Technical Field

[0001] This utility model relates to the field of PCB inkjet printing technology, specifically to a PCB inkjet printing device. Background Technology

[0002] Unlike traditional laser engraving, UV inkjet printing of QR codes on PCB boards effectively reduces workshop dust and equipment maintenance hassles. When using UV inkjet printing for PCB QR code printing, the PCB board is conveyed to the machine via a conveyor belt at the inlet. After the PCB board is in place, a vision-guided camera first positions the printing area, and then the printing assembly mounted on a three-axis motion gantry prints the QR code. After printing, a UV lamp cures the ink. After printing, the QR code is scanned to check for quality. Unreadable QR codes are rejected by the rear-end conveyor, while good products are unloaded normally.

[0003] When inkjet printing on PCB boards, an industrial robot is used to place the PCB board in the feed inlet, and a conveyor belt is used to transport it into the machine. However, because the width of the feed inlet is larger than the width of the PCB board in order to accommodate the transport of the PCB board, the PCB board will shift laterally during transport due to conveyor belt vibration and uneven force on both sides. This causes the inkjet printing position to deviate, making it impossible to accurately print on the designated area, thus affecting the inkjet printing quality of the PCB board.

[0004] Therefore, there is an urgent need for a PCB inkjet printing device to solve the above problems. Utility Model Content

[0005] To achieve the above objectives, the present invention provides the following technical solution: a PCB inkjet printing device, including a machine base and an inkjet printing head mounted on the machine base via a three-axis motion gantry frame, and further including two oppositely arranged fixed feed plates and a sliding feed plate disposed on one side of the machine base, the machine base being provided with a push rod motor for pushing the sliding feed plate, and the fixed feed plate and the sliding feed plate being provided with a feeding assembly for feeding PCB boards;

[0006] The feeding assembly includes multiple rotating shafts rotatably connected to opposite sides of the fixed feeding plate and the sliding feeding plate. Each rotating shaft has a conveying roller fixedly connected to its side wall. The machine base is equipped with a transmission mechanism for synchronously rotating each conveying roller on both sides. The fixed feeding plate and the sliding feeding plate are respectively provided with conveyor belts on the side near the spray nozzle. The fixed feeding plate and the sliding feeding plate are respectively provided with anti-deviation components for preventing the PCB board from deviating during the conveying process.

[0007] The anti-deviation assembly includes multiple T-slots formed on the side of the sliding feed plate near the fixed feed plate. Each T-slot is slidably connected to a T-plate. The sliding feed plate is provided with an adjustment assembly for adjusting the height of each T-plate. Each T-plate is fixedly connected to a first support plate on the side near the conveying roller. Each first support plate is provided with a second support plate on the side away from the machine. Each second support plate is connected to the T-plate through a connecting assembly. An anti-deviation roller is connected between each first support plate and the second support plate through an installation assembly.

[0008] The connecting assembly includes a guide rail fixedly connected to the side of the T-shaped plate near the anti-deviation roller, a U-shaped connecting plate slidably connected to the guide rail, a side of the U-shaped connecting plate away from the guide rail being hinged to a second support plate, an L-shaped plate fixedly connected to one side of the U-shaped connecting plate, a first bolt threadedly connected to the L-shaped plate, and one end of the first bolt abutting against the side wall of the T-shaped plate.

[0009] The mounting assembly includes a mounting rod rotatably connected to the side of the first support plate near the second support plate. The mounting rod has multiple keyways on its side wall, one end of which passes through the end of the mounting rod near the second support plate. The anti-deviation roller has an axial mounting hole, and multiple key plates are fixedly connected to the inner wall of the axial mounting hole. The mounting rod is equipped with a limiting component for limiting the anti-deviation roller.

[0010] The limiting assembly includes a limiting plate slidably connected to the side of the mounting rod away from the first support plate. A strip plate is fixedly connected to the side of the limiting plate near the mounting rod. Each strip plate is matched with a keyway. A second bolt is inserted into the limiting plate. The second bolt is threadedly connected to the end of the mounting rod away from the first support plate.

[0011] The adjustment assembly includes three fixed plates fixedly connected to the side of the sliding feed plate away from the fixed feed plate. Two of the three fixed plates on the side are fixedly connected to T-shaped rods on the side away from the machine. Two of the T-shaped rods are slidably connected to adjustment plates. The end of each T-shaped plate away from the machine is connected to the adjustment plate. The middle fixed plate is rotatably connected to a T-shaped threaded rod. The adjustment plate is threadedly connected to the T-shaped threaded rod.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This utility model of PCB inkjet printing equipment, through the setting of the feeding component, realizes automatic and continuous feeding of PCB boards, and uses the setting of the anti-deviation component to correct the position of the PCB board during the conveying process. This reduces the lateral deviation of the PCB board during conveying caused by the vibration of each conveying roller and uneven force on both sides, thereby ensuring the correct position of the PCB board and enabling the QR code to be accurately printed on the designated area, thus improving the inkjet printing quality of the PCB board. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram showing the position and structure of the feeding assembly of this utility model;

[0016] Figure 3 This is a schematic diagram of the adjustment component structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the anti-deviation component structure of this utility model;

[0018] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0019] Figure 6 This is a schematic diagram of the installation component and the limiting component of this utility model.

[0020] In the diagram: 101, machine base; 102, spraying dock; 2, fixed feed plate; 3, sliding feed plate; 401, rotating shaft; 402, conveyor roller; 403, conveyor belt; 501, T-slot; 502, T-plate; 503, first support plate; 504, second support plate; 505, anti-deviation roller; 601, guide rail; 602, U-shaped connecting plate; 603, L-shaped plate; 604, first bolt; 701, mounting rod; 702, keyway; 703, key plate; 801, limiting plate; 802, strip plate; 803, second bolt; 901, fixing plate; 902, T-shaped rod; 903, T-shaped threaded rod; 904, adjusting plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1

[0023] Please see Figures 1-6 The PCB inkjet printing equipment shown in the figure includes a machine base 101 and an inkjet printing port 102 mounted on the machine base 101 via a three-axis motion gantry. It also includes two fixed feed plates 2 and a sliding feed plate 3 arranged opposite to each other on one side of the machine base 101. The machine base 101 is provided with a push rod motor for pushing the sliding feed plate 3, and the fixed feed plate 2 and the sliding feed plate 3 are provided with feeding components for feeding PCB boards.

[0024] The feeding assembly includes multiple rotating shafts 401 that are rotatably connected to the opposite sides of the fixed feeding plate 2 and the sliding feeding plate 3. Each rotating shaft 401 has a conveying roller 402 fixedly connected to its side wall. The machine base 101 is provided with a transmission mechanism for synchronously rotating each conveying roller 402 on both sides. The fixed feeding plate 2 and the sliding feeding plate 3 are respectively provided with a conveyor belt 403 on the side near the spray nozzle 102. The fixed feeding plate 2 and the sliding feeding plate 3 are respectively provided with anti-deviation components for preventing the PCB board from deviating during the conveying process.

[0025] It should be noted that by setting up the feeding component, while achieving automatic and continuous feeding of the PCB board, the anti-deviation component corrects the position of the PCB board during the conveying process. This reduces the lateral deviation of the PCB board during conveying caused by the vibration of each conveying roller 402 and uneven force on both sides, thus ensuring the correctness of the PCB board's conveying position and enabling the QR code to be accurately printed on the designated area, thereby improving the coding quality of the PCB board.

[0026] It should be noted here that the transmission mechanism includes multiple transmission wheels respectively positioned on opposite sides of the fixed feed plate 2 and the sliding feed plate 3, and these transmission wheels are connected by a transmission belt (see reference). Figure 3 Then, the machine base 101 is equipped with a motor, and the output end of the motor is fixedly connected to a spline rod. The spline rod is splinedly connected to one of the transmission wheels on the fixed feed plate 2 and the sliding feed plate 3, so that while the transmission wheels are rotated, the sliding feed plate 3 can be moved easily. As the transmission mechanism is existing technology, its specific structure and working principle have been mastered by those in the art, and will not be described in detail here.

[0027] It should be noted that the specific structure and working principle of PCB inkjet marking equipment are already known to those skilled in the art, and will not be elaborated upon here. In the existing public technology, CN216733578U, an automatic inkjet marking device for PCB boards, has been described in detail and can be referred to.

[0028] Please see Figures 3-6The anti-deviation assembly shown in the figure includes multiple T-slots 501 formed on the side of the sliding feed plate 3 near the fixed feed plate 2. Each T-slot 501 is slidably connected to a T-plate 502. The sliding feed plate 3 is provided with an adjustment assembly for adjusting the height of each T-plate 502. Each T-plate 502 is fixedly connected to a first support plate 503 on the side near the conveyor roller 402. Each first support plate 503 is provided with a second support plate 504 on the side away from the machine base 101. Each second support plate 504 is connected to the T-plate 502 through a connecting assembly. Each first support plate 503 and the second support plate 504 are connected to an anti-deviation roller 505 through an installation assembly.

[0029] It should be noted here that by setting up the anti-deviation component, the position of the PCB board is corrected during the conveying process. This reduces the lateral deviation of the PCB board during conveying caused by the vibration of each conveying roller 402 and uneven force on both sides, thus ensuring the correctness of the PCB board's conveying position and enabling the QR code to be accurately printed on the designated area, thereby improving the coding quality of the PCB board.

[0030] Please see Figure 5 The connecting components shown in the figure include a guide rail 601 fixedly connected to the side of the T-shaped plate 502 near the anti-deviation roller 505, a U-shaped connecting plate 602 slidably connected to the guide rail 601, a side of the U-shaped connecting plate 602 away from the guide rail 601 hinged to the second support plate 504, an L-shaped plate 603 fixedly connected to one side of the U-shaped connecting plate 602, a first bolt 604 threadedly connected to the L-shaped plate 603, and one end of the first bolt 604 abutting against the side wall of the T-shaped plate 502;

[0031] It should be noted here that: by setting the connecting components, when installing or removing the anti-deviation roller 505, interference can be avoided by moving the second support plate 504 upward and deflecting its angle.

[0032] Please see Figure 5 and Figure 6 The mounting assembly shown in the figure includes a mounting rod 701 rotatably connected to the side of the first support plate 503 near the second support plate 504. The side wall of the mounting rod 701 has multiple keyways 702. One end of the keyway 702 passes through the end of the mounting rod 701 near the second support plate 504. The anti-deviation roller 505 has an axial mounting hole. Multiple key plates 703 are fixedly connected to the inner wall of the axial mounting hole. The mounting rod 701 is provided with a limiting assembly for limiting the anti-deviation roller 505.

[0033] It should be noted here that the installation of the components facilitates the replacement of the new anti-deviation roller 505, thereby achieving the sustainability of anti-deviation conveying of the PCB board.

[0034] Working principle: When performing inkjet printing on PCB boards, an industrial robot can first grab the PCB board between the fixed feed plate 2 and the sliding feed plate 3 and place it at two opposite conveyor rollers 402. Then, the transmission mechanism drives each conveyor roller 402 to rotate, and the PCB board is conveyed to the inkjet printing station 102 under the conveying action of each conveyor roller 402.

[0035] Furthermore, during the conveying process of the PCB board, the anti-deviation rollers 505 located on both sides can be used to correct the position of the PCB board during the conveying process. This reduces the lateral deviation of the PCB board during conveying caused by the vibration of each conveying roller 402 and uneven force on both sides, thus ensuring the correctness of the PCB board conveying position and enabling the QR code to be accurately printed on the designated area, thereby improving the printing quality of the PCB board.

[0036] After the PCB board is delivered to its position, a vision-guided camera is used to locate the coding area. Then, the QR code is printed using the inkjet terminal 102 mounted on a three-axis motion gantry. After printing, the ink is cured using a UV lamp. After coding is completed, the QR code is scanned to check if it is qualified. For QR codes that cannot be recognized, the back-end connecting station rejects the defective products, while the good products are unloaded normally. This completes the coding operation of the PCB board. Compared with the traditional laser engraving method, using UV ink to print QR codes on PCB boards can effectively reduce the dust in the workshop and the trouble of equipment maintenance.

[0037] Because the material at the edge of the PCB board is relatively hard, the surface of the anti-deviation roller 505 will wear out after prolonged contact with the PCB board. At this time, the working height of the anti-deviation roller 505 can be adjusted by adjusting the component, so that the worn part of the anti-deviation roller 505 can be deviated from the PCB board, thereby ensuring the stability of the anti-deviation conveying of the PCB board. After the surface of the anti-deviation roller 505 is completely used up, a new anti-deviation roller 505 can be replaced by the cooperation of the installation component and the limiting component, thereby achieving the sustainability of the anti-deviation conveying of the PCB board.

[0038] Example 2

[0039] Please see Figure 6 This embodiment further illustrates Example 1. The limiting component shown in the figure includes a limiting plate 801 that is slidably connected to the side of the mounting rod 701 away from the first support plate 503. A strip plate 802 is fixedly connected to the side of the limiting plate 801 near the mounting rod 701. Each strip plate 802 is matched with a keyway 702. A second bolt 803 is inserted into the limiting plate 801. The second bolt 803 is threadedly connected to the end of the mounting rod 701 away from the first support plate 503.

[0040] It should be noted here that: by setting the limiting component, after the anti-deviation roller 505 is installed, the strip plate 802 on one side of the limiting plate 801 is inserted into the keyway 702 and abuts against the key plate 703 on the inner wall of the anti-deviation roller 505. Then, the second bolt 803 is used to limit the limiting plate 801 and the mounting rod 701. Thus, the installation limiting of the anti-deviation roller 505 is achieved by the abutting action of each strip plate 802 and the key plate 703.

[0041] Example 3

[0042] Please see Figure 4 This embodiment further illustrates other embodiments. The adjustment assembly shown in the figure includes three fixed plates 901 fixedly connected to the side of the sliding feed plate 3 away from the fixed feed plate 2. Two of the three fixed plates 901 located on the side are fixedly connected to T-shaped rods 902 on the side away from the machine base 101. Two T-shaped rods 902 are slidably connected to adjustment plates 904. One end of each T-shaped plate 902 away from the machine base 101 is connected to the adjustment plate 904. The middle fixed plate 901 is rotatably connected to a T-shaped threaded rod 903. The adjustment plate 904 is threadedly connected to the T-shaped threaded rod 903.

[0043] It should be noted here that: by adjusting the settings of the components, the rotation of the T-shaped threaded rod 903, under the threaded meshing transmission between the T-shaped threaded rod 903 and the adjusting plate 904 and the guiding action of the two T-shaped rods 902, drives each T-shaped plate 502 to move, thereby driving each anti-deviation roller 505 to move, thus adjusting the working position of each anti-deviation roller 505, so that the wear position of the anti-deviation roller 505 can avoid contact with the PCB board, thereby ensuring the stability of the anti-deviation conveying of the PCB board.

[0044] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A PCB inkjet marking device, comprising: The machine base (101) and the spraying terminal (102) mounted on the machine base (101) via a three-axis motion gantry; Its characteristic is that it further includes: Two fixed feed plates (2) and a sliding feed plate (3) are arranged opposite to each other on one side of the machine base (101). The machine base (101) is equipped with a push rod motor for pushing the sliding feed plate (3). The fixed feed plate (2) and the sliding feed plate (3) are equipped with a feeding assembly for feeding PCB boards. The feeding assembly includes multiple rotating shafts (401) rotatably connected to opposite sides of the fixed feeding plate (2) and the sliding feeding plate (3). Each rotating shaft (401) has a conveying roller (402) fixedly connected to its side wall. The machine base (101) is provided with a transmission mechanism for synchronously rotating each conveying roller (402) on both sides. The fixed feeding plate (2) and the sliding feeding plate (3) are respectively provided with conveyor belts (403) on the side near the spray nozzle (102). The fixed feeding plate (2) and the sliding feeding plate (3) are respectively provided with anti-deviation components for preventing the PCB board from deviating during the conveying process.

2. The PCB inkjet printing device according to claim 1, characterized in that: The anti-deviation assembly includes multiple T-slots (501) formed on the side of the sliding feed plate (3) near the fixed feed plate (2). Each T-slot (501) is slidably connected to a T-plate (502). The sliding feed plate (3) is provided with an adjustment assembly for adjusting the height of each T-plate (502). Each T-plate (502) is fixedly connected to a first support plate (503) on the side near the conveying roller (402). Each first support plate (503) is provided with a second support plate (504) on the side away from the machine base (101). Each second support plate (504) is connected to the T-plate (502) through a connecting assembly. Each first support plate (503) and second support plate (504) is connected to an anti-deviation roller (505) through an installation assembly.

3. The PCB inkjet printing device according to claim 2, characterized in that: The connecting assembly includes a guide rail (601) fixedly connected to the side of the T-shaped plate (502) near the anti-deviation roller (505), the guide rail (601) being slidably connected to a U-shaped connecting plate (602), the side of the U-shaped connecting plate (602) away from the guide rail (601) being hinged to a second support plate (504), an L-shaped plate (603) fixedly connected to one side of the U-shaped connecting plate (602), and a first bolt (604) threadedly connected to the L-shaped plate (603), one end of the first bolt (604) abutting against the side wall of the T-shaped plate (502).

4. A PCB inkjet printing device according to claim 3, characterized in that: The mounting assembly includes a mounting rod (701) rotatably connected to the side of the first support plate (503) near the second support plate (504). The mounting rod (701) has multiple keyways (702) on its side wall. One end of the keyway (702) passes through the end of the mounting rod (701) near the second support plate (504). The anti-deviation roller (505) has an axial mounting hole. Multiple key plates (703) are fixedly connected to the inner wall of the axial mounting hole. The mounting rod (701) is provided with a limiting assembly for limiting the anti-deviation roller (505).

5. A PCB inkjet printing device according to claim 4, characterized in that: The limiting assembly includes a limiting plate (801) slidably connected to the side of the mounting rod (701) away from the first support plate (503). A strip plate (802) is fixedly connected to the side of the limiting plate (801) near the mounting rod (701). Each strip plate (802) is matched with a keyway (702). A second bolt (803) is inserted into the limiting plate (801). The second bolt (803) is threadedly connected to the end of the mounting rod (701) away from the first support plate (503).

6. A PCB inkjet printing device according to claim 5, characterized in that: The adjustment assembly includes three fixed plates (901) fixedly connected to the side of the sliding feed plate (3) away from the fixed feed plate (2). Two of the three fixed plates (901) on the side are fixedly connected to T-shaped rods (902) on the side away from the machine base (101). Two of the T-shaped rods (902) are slidably connected to an adjustment plate (904). One end of each T-shaped plate (502) away from the machine base (101) is connected to the adjustment plate (904). The middle fixed plate (901) is rotatably connected to a T-shaped threaded rod (903). The adjustment plate (904) is threadedly connected to the T-shaped threaded rod (903).

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