A fully automatic production line for double-sided character printing on PCB boards

Abstract

The invention discloses a fully automatic production line for double-sided character printing of PCB boards, comprising a feeding device, wherein a laminating device, a printing device, an identification and rejection device and a material receiving device are sequentially arranged on the left side of the feeding device, and a horizontal frame is arranged through the middle of the above devices, wherein the feeding device comprises a feeding box, wherein a conveyor belt is arranged inside the feeding box, and a blocking conveying mechanism is slidably arranged on the top of the horizontal frame, wherein the blocking conveying mechanism comprises a positioning chassis, and a positioning top plate is rotatably arranged on the right end of the positioning chassis; the PCB board character printing production line designed by the invention can realize the automation of character printing processing on the surface of the PCB board, and at the same time, the PCB board is always positioned during the printing processing process, and no side deviation occurs, and the conveying process of the PCB board is blocked, and no wear marks are caused on the surface of the PCB board due to the conveying, thereby improving the printing processing quality of the PCB board, realizing the rapid front and back flip printing processing of the PCB board, and improving the printing processing efficiency of the PCB board.

Description

Technical Field

[0001] The invention belongs to the technical field of PCB board printing processing, and specifically relates to a full-automatic production line for double-sided character printing of a PCB board. Background Art

[0002] PCB character printing is an efficient and accurate printing technology. It directly converts the CAM data provided by the customer into printing instructions through digital control technology, realizing fast and accurate printing of characters. Based on PCB character printing, a corresponding printing production line is derived.

[0003] For example, the PCB board solder mask spraying and window opening automatic production line with announcement number CN209731726U includes a conveying device and a loader, a screen printer, a baking machine, a character machine, a laser window opening machine and a board collecting machine which are arranged in sequence along the conveying direction of the conveying device. A conveying device is provided between the loader and the screen printer, between the screen printer and the baking machine, between the baking machine and the character machine, between the character machine and the laser window opening machine, and between the laser window opening machine and the board collecting machine...

[0004] In the above patent, the PCB board is directly in contact with the rotating conveying rod during transportation, which may cause wear marks on the surface of the PCB board. In addition, as the PCB board is transported by multiple rotating conveying rods, it may cause a slight deviation of the PCB board, causing deviation in the character printing position, affecting the printing quality on the PCB board surface. For this reason, we propose a fully automatic production line for double-sided character printing on PCB boards. Summary of the invention

[0005] The purpose of the present invention is to provide a fully automatic production line for double-sided character printing of PCB boards to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fully automatic production line for double-sided character printing of PCB boards, comprising a feeding device, a laminating device, a printing device, an identification and rejection device and a material receiving device are sequentially arranged on the left side of the feeding device, and a horizontal frame is arranged through the middle of the above-mentioned devices, the feeding device comprises a feeding box, a conveyor belt is arranged inside the feeding box, a blocking conveying mechanism is slidably arranged on the top of the horizontal frame, the blocking conveying mechanism comprises a positioning chassis, a positioning top plate is rotatably arranged on the right end of the positioning chassis, positioning grooves for PCB boards to pass through are opened on the surfaces of the positioning top plate and the positioning chassis, and a walking component for driving the positioning chassis to walk is arranged on the top of the horizontal frame;

[0007] A turning member is provided between the positioning bottom plate and the positioning top plate;

[0008] The walking component comprises a transverse rail horizontally fixed above the transverse frame, a base is arranged at the bottom of the positioning chassis, and a guide slide seat sleeved on the transverse rail is arranged at the bottom of the base.

[0009] Preferably, a vacuum suction cup extending to the bottom of the positioning groove is arranged inside the positioning top plate, a roller is rotatably arranged at the bottom of the positioning groove on the surface of the positioning bottom plate, a notch is opened in the positioning groove on the surface of the positioning bottom plate, and two electric telescopic rods are arranged at the notch.

[0010] Preferably, the walking component also includes two transverse racks horizontally located on the inner sides of the two transverse rails, and walking gears are respectively meshed above the two transverse racks. A walking motor connected to the walking gears is provided on the inner side of the guide slide, and a connecting rod is provided between two adjacent walking gears.

[0011] Preferably, the flipping member includes a connecting shaft installed on the front and rear surfaces of the inner end of the positioning top plate, the outer end of the connecting shaft is provided with a flipping gear, the front and rear surfaces of the inner end of the positioning bottom plate are provided with a driving motor, and the inner end of the driving motor is provided with a driving gear meshing with the flipping gear.

[0012] Preferably, a cleaning and positioning mechanism is provided at the rear end of the conveyor belt, and the cleaning and positioning mechanism includes two positioning plates located on the upper surface of the conveyor belt, an extension plate is provided at the outer end of the positioning plate, a fixed inner rod is provided on the inner surface of the lower end of the extension plate, and an arc-shaped cleaning plate for cleaning the surface of the conveyor belt is provided on the inner surface of the fixed inner rod.

[0013] Preferably, side plates are provided on both sides of the rear end of the conveyor belt, and a driving component is provided between the two extension plates. The driving component includes a fixed long plate fixed to the inner surface of the extension plate, and the inner end surface of the fixed long plate is provided with teeth. Double-headed gears are meshed between the relatively distributed teeth, and a working motor is provided at the bottom of the double-headed gear.

[0014] Preferably, a fixing rod movably penetrating the side plate is disposed on the outer surface of the extension plate, a reset piece is sleeved on the outer end of the fixing rod, and the outer end of the fixed inner rod movably penetrates the side plate.

[0015] Preferably, the material receiving device includes a material receiving rack, a material stacking plate is horizontally arranged inside the material receiving rack, a vertical screw threadedly connected to the material stacking plate is vertically arranged inside the material receiving rack, a vertical frame is arranged inside the material receiving rack, a positioning baffle is arranged on the left side of the material stacking plate, and a material removing component for removing the PCB board is arranged on the surface of the vertical frame.

[0016] Preferably, the material-moving component includes a rotating motor installed on the surface of the vertical frame, a fixed shifting rod is provided at the rear end of the rotating motor, a rotating plate is rotatably provided at the free end of the fixed shifting rod, a guide slider is rotatably provided at the free end of the rotating plate, and the guide slider is slidably connected to a horizontally arranged transverse slide.

[0017] Preferably, an upper plate is provided on the front surface of the guide sliding block, a material-shifting plate is provided below the upper plate, and a telescopic cylinder for driving the material-shifting plate to rise and fall is provided on the upper surface of the upper plate.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] (1) The PCB character printing production line designed by the present invention can realize the automation of character printing processing on the surface of the PCB board. At the same time, the PCB board is always positioned during the printing process, and there will be no lateral deviation. The PCB board conveying process is blocked, and no wear marks are caused on the surface of the PCB board due to conveying, thereby improving the quality of PCB board printing processing, realizing the rapid front and back flip printing processing of the PCB board, and improving the efficiency of PCB board printing processing.

[0020] (2) The present invention is capable of collecting qualified products by means of a material collecting device which is equipped with a weight sensor. When a certain number of qualified PCB boards are collected, an alarm is issued to facilitate collection. At the same time, the PCB boards on the barrier conveying mechanism are further removed to facilitate rapid unloading and collection of the PCB boards, thereby improving the overall printing processing efficiency of the PCB boards.

[0021] (3) The cleaning and positioning mechanism designed in the present invention can continuously position the PCB board placed on the conveyor belt, so that the PCB board will not deviate to the side, and it is convenient to convey it to the barrier conveying mechanism for subsequent printing processing. While positioning the PCB board, the surface of the conveyor belt is continuously cleaned, so that particles attached to the surface will not damage the surface of the PCB board, thereby increasing the safety and stability of PCB printing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of the PCB board character printing production line of the present invention;

[0023] Figure 2 For the present invention Figure 1 Structural schematic diagram of the middle feeding device;

[0024] Figure 3 For the present invention Figure 1 The left side structural diagram of the middle feeding device;

[0025] Figure 4 For the present invention Figure 2 Schematic diagram of the structure of the middle barrier conveying mechanism;

[0026] Figure 5 For the present invention Figure 4 A magnified image of area A;

[0027] Figure 6 For the present invention Figure 4 Enlarged view of area B;

[0028] Figure 7 For the present invention Figure 2 A schematic diagram of the structure of the cleaning and positioning mechanism;

[0029] Figure 8 For the present invention Figure 7 Enlarged view of the middle C area;

[0030] Fig. 9 For the present invention Figure 1 The structural diagram of the intermediate material receiving device;

[0031] Fig.10 For the present invention Fig. 9 The structural schematic diagram of the middle material shifting component;

[0032] In the figure: 100, feeding device; 101, feeding box; 102, conveyor belt; 103, lifting suction plate; 104, frame; 200, laminating device; 300, printing device; 400, identification and rejection device; 500, material collection device; 501, material collection rack; 502, vertical screw; 503, stacking plate; 504, positioning baffle; 505, stand; 506, drive cylinder; 507, material shifting component; 50 71. Rotating motor; 5072. Fixed lever; 5073. Rotating plate; 5074. Vertical frame; 5075. Horizontal slideway; 5076. Guide slide block; 5077. Telescopic cylinder; 5078. Material shifting plate; 5079. Upper plate; 600. Blocking conveying mechanism; 601. Positioning chassis; 6011. Roller; 6012. Identification screen; 6013. Bright light; 6014. Electric telescopic rod; 6015 , support column; 602, positioning top plate; 6021, vacuum suction cup; 603, walking component; 6031, cross rail; 6032, support rod; 6033, guide slide; 6034, cross rack; 6035, walking gear; 6036, walking motor; 6037, connecting rod; 604, flip component; 6041, flip gear; 6042, connecting shaft; 6043, driving gear; 6044, driving Motor; 605, base; 700, cleaning and positioning mechanism; 701, positioning plate; 702, extension plate; 703, arc cleaning plate; 704, fixed inner rod; 705, driving component; 7051, fixed long plate; 7052, double-headed missing gear; 7053, teeth; 7054, supporting cross plate; 7055, working motor; 706, side plate; 707, fixed rod; 708, reset member; 800, cross frame. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Example 1

[0035] See also Figure 1 - Figure 6 The present invention provides a technical solution: a fully automatic production line for double-sided character printing of a PCB board, comprising a feeding device 100, a laminating device 200, a printing device 300, an identification and rejection device 400 and a receiving device 500 are sequentially arranged on the left side of the feeding device 100, and a horizontal frame 800 is arranged through the middle of the above devices, the feeding device 100 comprises a feeding box 101, a frame 104 is arranged on the front surface of the feeding box 101, a conveyor belt 102 is arranged inside the feeding box 101, a lifting suction plate 103 is arranged in front of the conveyor belt 102, and a blocking conveying mechanism 600 is slidably arranged on the top of the horizontal frame 800, and the blocking conveyor The structure 600 includes a positioning chassis 601, a positioning top plate 602 is rotatably provided at the right end of the positioning chassis 601, and positioning grooves for the PCB board to pass through are provided on the surfaces of the positioning top plate 602 and the positioning chassis 601, and an identification screen 6012 is embedded in the center of the positioning chassis 601, and a bright light 6013 is provided around the identification screen 6012, which can illuminate the lower surface of the PCB board located on the positioning chassis 601, so as to facilitate the identification screen 6012 to identify the quality of the characters on the lower surface, reduce the trouble of subsequent reverse identification, and play a role in positioning the PCB board. A walking component 603 for driving the positioning chassis 601 to walk is provided on the top of the horizontal frame 800;

[0036] A flip member 604 is provided between the positioning bottom plate 601 and the positioning top plate 602. The flip member 604 can be used to facilitate the printing process of the PCB board. A support column 6015 is provided between the positioning bottom plate 601 and the base 605.

[0037] The walking component 603 includes a horizontal rail 6031 fixed horizontally above the cross frame 800, and a support rod 6032 is arranged at the bottom of the horizontal rail 6031 to provide stable support. A base 605 is arranged at the bottom of the positioning chassis 601, and a guide slide 6033 is arranged at the bottom of the base 605 and is mounted on the horizontal rail 6031, so as to facilitate the stable walking and movement of the entire barrier conveying mechanism 600.

[0038] In this embodiment, preferably, a vacuum suction cup 6021 extending to the bottom of the positioning groove is provided inside the positioning top plate 602, which can further adsorb the PCB board of the positioning top plate 602, and a roller 6011 is rotatably provided at the bottom of the positioning groove on the surface of the positioning chassis 601. The roller 6011 reduces friction resistance during subsequent unloading and facilitates rapid unloading. A notch is provided in the positioning groove on the surface of the positioning chassis 601 to facilitate unloading of the PCB board from the notch. Two electric telescopic rods 6014 are provided at the notch. A shielding plate is connected to the inner end of the electric telescopic rod 6014 to shield and position the PCB board.

[0039] In this embodiment, preferably, the walking component 603 also includes two transverse racks 6034 horizontally located on the inner sides of the two transverse rails 6031, and a supporting base plate is arranged between the bottom of the transverse racks 6034 and the support rod 6032, and walking gears 6035 are respectively meshed on the top of the two transverse racks 6034, and a walking motor 6036 connected to the walking gears 6035 is arranged on the inner side of the guide slide 6033, and a connecting rod 6037 is arranged between two adjacent walking gears 6035, and one walking motor 6036 can drive the two walking gears 6035 to rotate.

[0040] In this embodiment, preferably, the flipping member 604 includes a connecting shaft 6042 installed on the front and rear surfaces of the inner end of the positioning top plate 602. The flipping member 604 can drive the positioning top plate 602 to flip to above the positioning chassis 601, so as to facilitate the flipping of the PCB board and reduce the trouble of setting up an additional flipping device. A flipping gear 6041 is arranged at the outer end of the connecting shaft 6042, and a driving motor 6044 is arranged on the front and rear surfaces of the inner end of the positioning chassis 601. The inner end of the driving motor 6044 is provided with a driving gear 6043 which meshes with the flipping gear 6041.

[0041] In summary, the PCB board unloaded by the conveyor belt 102 is adsorbed by the lifting suction plate 103 and placed in the positioning groove on the surface of the positioning top plate 602, and the PCB board is adsorbed and fixed by the vacuum suction cup 6021. The travel motor 6036 works to drive the travel gear 6035 to rotate, and the travel gear 6035 rotates in meshing with the horizontal rack 6034. Since the guide slide 6033 is slidably connected with the horizontal rail 6031, the travel gear 6035 moves to drive the guide slide 6033 to move along the horizontal rail 6031, thereby driving the entire base 605 and the positioning chassis 601 thereon. The PCB board moves to the laminating device 200 for laminating. After the laminating is completed, it continues to move to the printing device 300 for printing on the upper surface of the PCB board. After the front surface is printed and cured, the driving motor 6044 starts to work, driving the driving gear 6043 to rotate, and the flip gear 6041 and the connecting shaft 6042 engaged therewith rotate, thereby driving the positioning top plate 602 to flip 180 degrees and locate above the positioning bottom plate 601. Then the vacuum suction cup 6021 removes the adsorption force, and the PCB board falls into the positioning groove on the surface of the positioning bottom plate 601. At this time, the back side of the PCB board is located at the top, and the back side of the PCB board can continue to be processed. At the same time, the bright light 6013 and the identification screen 6012 cooperate to identify the quality of the characters on the lower surface of the PCB board. After the front and back sides of the PCB board are both printed, the entire barrier conveying mechanism 600 continues to move to the left to the identification and rejection device 400. At this time, after the lower surface of the PCB board is identified by the identification screen 6012, the identification and rejection device 400 identifies the upper surface of the PCB board. The unqualified ones are directly adsorbed by the adsorption disk in the identification and rejection device 400, so that the unqualified PCB board can be separated from the positioning chassis 60 1. The qualified ones continue to move to the left, and the collecting device 500 is used to quickly collect the PCB boards. After collection, the base 605 can be removed and placed on another production line. The two production lines can be used back and forth. The PCB board character printing production line can be set up as two parallel printing and transmission lines. Even if a fault occurs on one line, the other line can still be maintained to continue production. It has a natural downtime backup function. The whole process increases the convenience of printing on the front and back sides of the PCB board, and during the printing process, the position accuracy of the PCB board is guaranteed, while increasing the convenience of quality identification on the front and back sides of the PCB board.

[0042] Example 2

[0043] Reference Figure 7 and Figure 8 , which is the second embodiment of the present invention, and this embodiment is different from the previous embodiment.

[0044] In the present embodiment, preferably, a cleaning and positioning mechanism 700 is provided at the rear end of the conveyor belt 102. The cleaning and positioning mechanism 700 can be used to continuously position the PCB board placed on the conveyor belt 102, so that the PCB board will not deviate to the side, and it is convenient to be transported to the blocking conveying mechanism 600 for subsequent printing processing. While positioning the PCB board, the surface of the conveyor belt 102 is continuously cleaned, so that particles will not adhere to the surface to cause damage to the surface of the PCB board, thereby increasing the safety and stability of PCB printing. The cleaning and positioning mechanism 700 includes two positioning plates 701 located on the upper surface of the conveyor belt 102. The PCB board placed on the conveyor belt 102 will be located between the two positioning plates 701. An extension plate 702 is provided at the outer end of the positioning plate 701, and a fixed inner rod 704 is provided on the inner surface of the lower end of the extension plate 702. An arc-shaped cleaning plate 703 for cleaning the surface of the conveyor belt 102 is provided on the inner surface of the fixed inner rod 704. The plurality of arc-shaped cleaning plates 703 can be moved left and right to perform friction cleaning on the surface of the conveyor belt 102.

[0045] In this embodiment, preferably, side plates 706 are provided on both sides of the rear end of the conveyor belt 102, and a driving member 705 is provided between the two extension plates 702. The driving member 705 can drive the two positioning plates 701 to move relative to each other, and at the same time position the two sides of the PCB board. The driving member 705 includes a fixed long plate 7051 fixed to the inner surface of the extension plate 702, and the inner end surface of the fixed long plate 7051 is provided with teeth 7053, and the teeth 7053 distributed relatively are meshed with double-headed gears 7052. A working motor 7055 is provided at the bottom of the gear 7052, and a supporting cross plate 7054 for supporting the working motor 7055 is provided between the two side plates 706. A fixing rod 707 which movably penetrates the side plates 706 is provided on the outer surface of the extension plate 702. A reset piece 708 is sleeved on the outer end of the fixing rod 707. The reset piece 708 can be compressed when the positioning plate 701 moves, so as to rebound to its original position. The outer end of the fixed inner rod 704 movably penetrates the side plates 706, and the fixed inner rod 704 can play a guiding and limiting role for the positioning plate 701.

[0046] In summary, when in use, the PCB board can be placed on the conveyor belt 102, and the working motor 7055 is operated to drive the double-headed missing gear 7052 to rotate. When the double-headed missing gear 7052 rotates until the teeth 7053 are engaged, the two fixed long plates 7051 move relative to each other with the rotation, driving the positioning plate 701 and the fixing rod 707 to move relative to each other, and the reset member 708 is compressed. The two positioning plates 701 move relative to each other, and the inner surfaces contact the two sides of the PCB board and push it to a suitable position. When the double-headed missing gear 7052 is disengaged from the teeth 7053, the reset member 708 is pressed. 8 rebounds, driving the positioning plate 701 to move outward to restore its original position. When the positioning plate 701 moves left and right, it will drive the extension plate 702 to move, thereby driving the arc cleaning plate 703 to move, contact the surface of the conveyor belt 102, and rub and clean the particles attached to the surface in advance, so that the surface of the conveyor belt 102 is smooth and flat, and no wear marks are caused on the surface of the PCB board. As the positioning plate 701 moves left and right repeatedly, the two sides of the PCB board can be continuously positioned, and the surface of the conveyor belt 102 can be cleaned while positioning, thereby increasing the accuracy and stability of the PCB board character printing processing position.

[0047] Example 3

[0048] Reference Fig. 9 and Fig.10 , which is the third embodiment of the present invention, and this embodiment is different from the above two embodiments.

[0049] In this embodiment, preferably, the material collecting device 500 includes a material collecting rack 501. The material collecting device 500 can be used to collect qualified products and is equipped with a weight sensor. When a certain number of qualified PCB boards are collected, an alarm will be issued to facilitate collection. At the same time, the PCB boards on the blocking conveying mechanism 600 will be further removed to facilitate the rapid unloading and collection of PCB boards, thereby improving the overall printing processing efficiency of PCB boards. A stacking plate 503 is horizontally arranged inside the material collecting rack 501. A vertical screw rod 502 threadedly connected to the stacking plate 503 is vertically arranged at the top, a nut block threadedly connected to the vertical screw rod 502 is arranged on the front surface of the stacking plate 503, a vertical frame 505 is arranged inside the material receiving rack 501, the vertical frame 505 can be slidably connected to the other end of the stacking plate 503 to play a guiding role, a positioning baffle 504 is arranged on the left side of the stacking plate 503, the positioning baffle 504 can play a role of resisting and limiting when the PCB board is falling, and a material-moving component 507 for moving the PCB board is arranged on the surface of the vertical frame 505.

[0050] In this embodiment, preferably, the material-pickup component 507 includes a rotating motor 5071 installed on the surface of the vertical frame 505, and the material-pickup component 507 can be used to continuously and quickly unload the PCB board on the blocking conveying mechanism 600 and drop it on the stacking plate 503. A fixed lever 5072 is provided at the rear end of the rotating motor 5071, and a rotating plate 5073 is rotatably provided at the free end of the fixed lever 5072, and a guide slider 5076 is rotatably provided at the free end of the rotating plate 5073, and the guide slider 5076 is slidably connected to a horizontally arranged transverse slide 5075, and a vertical frame 5074 is provided between the bottom of the transverse slide 5075 and the material receiving rack 501, and the rear surface of the material receiving rack 501 is connected to the horizontal frame A driving cylinder 506 is arranged between 800, which can keep the material receiving rack 501 away from the end of the horizontal frame 800, so as to facilitate the subsequent removal of the barrier conveying mechanism 600 and installation on another production line for continued use; an upper plate 5079 is arranged on the front surface of the guide slider 5076, and a material removing plate 5078 is arranged under the upper plate 5079; a frosted soft pad is arranged on the lower surface of the material removing plate 5078 to avoid damage to the PCB board and increase the friction resistance between the two, so as to facilitate the rapid unloading of the PCB board by using the friction resistance; a telescopic cylinder 5077 for driving the material removing plate 5078 to rise and fall is arranged on the upper surface of the upper plate 5079, so as to change the height of the material removing plate 5078 and facilitate contact with the PCB board.

[0051] In summary, the PCB board after inkjet printing moves to the end of the horizontal frame 800 along with the blocking conveying mechanism 600. At this time, the vertical screw 502 rotates under the drive of the bottom motor, and the nut block and the stacking plate 503 threadedly connected thereto move upward. When the stacking plate 503 moves upward to a suitable height outside the blocking conveying mechanism 600, the vertical screw 502 stops rotating, and the rotating motor 5071 works to drive the fixed lever 5072 to rotate. When the fixed lever 5072 rotates to the left, it drives the rotating plate 5073 to move left, drives the guide slider 5076 to move left in the horizontal slide 5075, drives the upper plate 5079 to move left, and drives the material plate 5078 to move left. At this time, the material plate 50 78 contacts the PCB board and uses the friction resistance and inertia of contact to push the PCB board to the left, detach from the positioning chassis 601 and fall on the stacking plate 503. When the PCB board is detached from the material-pickup plate 5078, the internal piston rod of the telescopic cylinder 5077 retracts to allow the material-pickup plate 5078 to be located above the PCB. When the fixed lever 5072 rotates to the right, it drives the upper plate 5079 to move to the right. When it moves to above the PCB board, the telescopic cylinder 5077 works, and the internal piston rod extends to drive the material-pickup plate 5078 to contact the surface of the PCB board, and then continues to unload the PCB board. The whole process realizes the rapid unloading of the PCB board, reduces the trouble of manual unloading, and improves the efficiency of the entire PCB printing processing.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fully automatic production line for double-sided character printing of PCB boards, comprising a feeding device (100), characterized in that: The left side of the feeding device (100) is provided with a laminating device (200), a printing device (300), an identification and rejection device (400) and a material receiving device (500) in sequence, and a horizontal frame (800) is arranged through the middle of the above-mentioned devices. The feeding device (100) comprises a feeding box (101), a conveyor belt (102) is arranged inside the feeding box (101), a blocking conveying mechanism (600) is slidably arranged on the top of the horizontal frame (800), and the blocking conveying mechanism (600) comprises a positioning chassis (601), a positioning top plate (602) is rotatably arranged on the right end of the positioning chassis (601), and the surfaces of the positioning top plate (602) and the positioning chassis (601) are provided with positioning grooves for the PCB board to pass through, and a walking component (603) for driving the positioning chassis (601) to walk is arranged on the top of the horizontal frame (800); A turning member (604) is provided between the positioning bottom plate (601) and the positioning top plate (602); The walking component (603) comprises a horizontal rail (6031) fixed horizontally above the horizontal frame (800); a base (605) is arranged at the bottom of the positioning chassis (601); and a guide slide (6033) sleeved on the horizontal rail (6031) is arranged at the bottom of the base (605).

2. A fully automatic production line for double-sided character printing on PCB boards according to claim 1, characterized in that: A vacuum suction cup (6021) extending to the bottom of the positioning groove is arranged inside the positioning top plate (602), a roller (6011) is rotatably arranged at the bottom of the positioning groove on the surface of the positioning bottom plate (601), and a notch is opened in the positioning groove on the surface of the positioning bottom plate (601), and two electric telescopic rods (6014) are arranged at the notch.

3. A fully automatic production line for double-sided character printing of PCB boards according to claim 1, characterized in that: The walking component (603) further comprises two horizontal racks (6034) horizontally located on the inner sides of the two horizontal rails (6031), and walking gears (6035) are respectively meshed and arranged above the two horizontal racks (6034), a walking motor (6036) connected to the walking gears (6035) is arranged on the inner side of the guide slide (6033), and a connecting rod (6037) is arranged between two adjacent walking gears (6035).

4. A fully automatic production line for double-sided character printing of PCB boards according to claim 1, characterized in that: The flipping member (604) comprises a connecting shaft (6042) mounted on the front and rear surfaces of the inner end of the positioning top plate (602), a flipping gear (6041) being arranged at the outer end of the connecting shaft (6042), a driving motor (6044) being arranged on the front and rear surfaces of the inner end of the positioning bottom plate (601), and a driving gear (6043) meshing with the flipping gear (6041) being arranged at the inner end of the driving motor (6044).

5. The fully automatic production line for double-sided character printing of PCB boards according to claim 1 is characterized in that: A cleaning positioning mechanism (700) is provided at the rear end of the conveyor belt (102), and the cleaning positioning mechanism (700) comprises two positioning plates (701) located on the upper surface of the conveyor belt (102), an extension plate (702) is provided at the outer end of the positioning plate (701), a fixed inner rod (704) is provided on the inner surface of the lower end of the extension plate (702), and an arc-shaped cleaning plate (703) for cleaning the surface of the conveyor belt (102) is provided on the inner surface of the fixed inner rod (704).

6. A fully automatic production line for double-sided character printing of PCB boards according to claim 5, characterized in that: Side plates (706) are provided on both sides of the rear end of the conveyor belt (102), and a driving component (705) is provided between the two extension plates (702). The driving component (705) includes a fixed long plate (7051) fixed to the inner surface of the extension plate (702), and the inner end surface of the fixed long plate (7051) is provided with teeth (7053), and a double-headed missing gear (7052) is meshed between the relatively distributed teeth (7053), and a working motor (7055) is provided at the bottom of the double-headed missing gear (7052).

7. A fully automatic production line for double-sided character printing of PCB boards according to claim 6, characterized in that: The outer surface of the extension plate (702) is provided with a fixed rod (707) which movably penetrates the side plate (706); the outer end of the fixed rod (707) is sleeved with a reset piece (708); and the outer end of the fixed inner rod (704) movably penetrates the side plate (706).

8. The fully automatic production line for double-sided character printing of PCB boards according to claim 1, characterized in that: The material receiving device (500) comprises a material receiving frame (501), a material stacking plate (503) is horizontally arranged inside the material receiving frame (501), a vertical screw rod (502) threadedly connected to the material stacking plate (503) is vertically arranged inside the material receiving frame (501), a vertical frame (505) is arranged on the top of the material stacking plate (503), a positioning baffle (504) is arranged on the left side of the material stacking plate (503), and a material shifting component (507) for shifting PCB boards is arranged on the surface of the vertical frame (505).

9. A fully automatic production line for double-sided character printing on PCB boards according to claim 8, characterized in that: The material-moving component (507) comprises a rotating motor (5071) mounted on the surface of the stand (505); a fixed moving rod (5072) is arranged at the rear end of the rotating motor (5071); a rotating plate (5073) is rotatably arranged at the free end of the fixed moving rod (5072); a guide slider (5076) is rotatably arranged at the free end of the rotating plate (5073); and the guide slider (5076) is slidably connected to a horizontally arranged transverse slideway (5075).

10. A fully automatic production line for double-sided character printing of PCB boards according to claim 9, characterized in that: An upper plate (5079) is disposed on the front surface of the guide slider (5076), a material shifting plate (5078) is disposed below the upper plate (5079), and a telescopic cylinder (5077) for driving the material shifting plate (5078) to move up and down is disposed on the upper surface of the upper plate (5079).

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