Automatic printing equipment for circuit board

Abstract

The utility model discloses automatic printing equipment for a circuit board, which comprises a printing rack, a movable scraper arranged at the upper end of the printing rack, a mounting rack capable of moving up and down arranged at the upper end of the printing rack, a printing plate arranged inside the mounting rack, and a replacement mechanism, the replacement mechanism comprises a replacement frame plate and limiting insertion columns, the replacement frame plate is vertically and slidably connected into the mounting frame, mounting grooves matched with the printing plates are formed in the upper end and the lower end of the replacement frame plate, the printing plates are located in the mounting grooves, and the limiting insertion columns are transversely and slidably connected into sliding holes in the left end and the right end of the mounting frame correspondingly; according to the automatic printing equipment for the circuit board, limiting on the old printing plate is automatically canceled in the process of installing the new printing plate, so that the new printing plate and the old printing plate are disassembled and assembled at the same time, the time required for replacing the printing plates of the automatic printing equipment for the circuit board is shortened, and the automatic printing efficiency of the circuit board is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automatic printing of circuit board, specifically to a kind of automatic printing equipment of circuit board. BACKGROUND

[0002] Automatic printing of circuit board refers to the process of printing operation on circuit board using automated equipment, specifically, automatic printing machine of circuit board is a kind of equipment specially used for automatically printing ink, solder paste and other materials on PCB, which plays a crucial role in electronic manufacturing industry, can significantly improve production efficiency and printing quality, and is widely used in electronic manufacturing industry, especially in the production of PCB in the fields of mobile phones, computers, communication equipment, automobile electronics, etc., which can meet the production needs of large scale, high precision and high efficiency, and provide strong support for the development of electronic manufacturing industry;In prior art, a kind of circuit board printing equipment is proposed in authorization publication CN 112739047 B, including bottom frame and placing table, bottom frame top side is equipped with placing table for placing circuit board;Paint brushing mechanism, bottom frame top side and placing table top between them are equipped with paint brushing mechanism;Clamping mechanism, clamping mechanism is equipped on paint brushing mechanism, through the cooperation of paint brushing mechanism and clamping mechanism, automatic paint brushing work can be completed on circuit board, and the work efficiency of people is improved, but in the process of use, different printing plates need to be used for printing for different circuit boards, and when replacing printing plate, old printing plate needs to be disassembled first to install new printing plate, so that the replacement of printing plate needs a long time. CONTENT OF UTILITY MODEL

[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art, provide an automatic printing equipment of circuit board, which automatically cancels the limiting of old printing plate during the installation of new printing plate, allows the disassembly and assembly of new and old printing plates to be performed simultaneously, reduces the time required for replacing printing plate of automatic printing equipment of circuit board, improves the efficiency of automatic printing of circuit board, and effectively solves the problems in the background art.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an automatic printing equipment of circuit board, comprising a printing machine frame, a movable doctor blade is arranged at the upper end of the printing machine frame, a mounting rack movable up and down is arranged at the upper end of the printing machine frame, an inside of the mounting rack is provided with a printing plate, and further comprising a replacement mechanism.

[0005] Replacement mechanism: It includes a replacement frame plate and limiting pins. The replacement frame plate is vertically slidably connected to the inside of the mounting frame. Both the upper and lower ends of the replacement frame plate are provided with mounting grooves for mounting the printing plate. The printing plate is located inside the mounting grooves. The limiting pins are horizontally slidably connected to the sliding holes at the left and right ends of the mounting frame. The limiting pins pass through the round holes on the surface of the replacement frame plate and are inserted into the insertion holes on the surface of the printing plate. During the installation of the new printing plate, the limiting of the old printing plate is automatically canceled, so that the installation and removal of the new and old printing plates can be carried out simultaneously, reducing the time required for changing printing plates in the automatic circuit board printing equipment and improving the efficiency of automatic circuit board printing.

[0006] Furthermore, the replacement mechanism also includes an adjusting plate, an inclined plate, and a top column. The adjusting plate slides vertically into the grooves at the left and right ends of the replacement frame plate. An inclined plate is provided at the end of the adjusting plate near the limiting insert. The top column is located in the middle of the limiting insert. The top column and the inclined plate are installed together to move the position of the limiting insert.

[0007] Furthermore, the replacement mechanism also includes a reset spring, which is respectively disposed between the limiting plate at the end of the limiting plug and the side of the mounting bracket. The reset spring is movably sleeved on the outer arc surface of the limiting plug to provide power for the reset of the limiting plug.

[0008] Furthermore, the replacement mechanism also includes guide posts, which are respectively disposed in the middle of the adjustment plate. The guide posts are vertically slidably connected to the guide holes on the surface of the replacement frame plate, providing guidance and support for the movement of the adjustment plate.

[0009] Furthermore, the replacement mechanism also includes limiting springs, which are respectively disposed between the disc at the end of the guide post and the inner wall of the replacement frame plate. The limiting springs are respectively movably sleeved on the outer arc surface of the guide post to facilitate the reset of the adjustment plate.

[0010] Furthermore, the upper vertical side of the adjustment plate near the center of the replacement frame plate and the upper front and rear inner sides of the replacement frame plate are provided with spring sheets, which increase the friction between the printing plate and the mounting components by utilizing the deformation of the spring sheets.

[0011] Furthermore, the front and rear sides of the replacement frame and the front and rear ends of the mounting bracket are all rotatably connected to rotating plates via rotating shafts. A telescopic rod and a spring are provided between two adjacent rotating plates. The springs are respectively movably sleeved on the outer arc surface of the adjacent telescopic rods, providing elastic limit for the replacement frame and making the movement of the replacement frame more stable.

[0012] Further, the front end of the printing frame is provided with a PLC controller, the input end of the PLC controller is electrically connected to an external power supply, the middle part of the table at the lower end of the printing frame is provided with a positioning mold, the upper end of the printing frame is respectively provided with an electric push rod one, the telescopic end of the electric push rod one is provided with an adjusting frame, the upper end of the adjusting frame is provided with a linear motor, the lower surface of the mover base of the linear motor is provided with an electric push rod two, a scraper is arranged at the telescopic end of the electric push rod two, a mounting frame is arranged at the lower end of the adjusting frame, and the input ends of the electric push rod one, the linear motor and the electric push rod two are all electrically connected to the output end of the PLC controller, so that the starting and stopping of the whole device are controlled, and power is provided for the movement of the scraper and the printing plate.

[0013] Compared with the prior art, the circuit board automatic printing equipment has the following advantages:

[0014] The old printing plate is automatically cancelled from the limiting during the installation of the new printing plate, so that the disassembly and assembly of the new and old printing plates are simultaneously performed, the time required for replacing the printing plate of the circuit board automatic printing equipment is reduced, and the efficiency of the circuit board automatic printing is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the whole device;

[0016] Figure 2 It is a structural schematic diagram of the whole device from the front view;

[0017] Figure 3 It is a structural schematic diagram of the replacement mechanism from the front view;

[0018] Figure 4 It is a structural schematic diagram of the replacement mechanism from the front view;

[0019] Figure 5 It is a structural schematic diagram of the mounting frame from the side view;

[0020] Figure 6 It is a structural schematic diagram of the replacement mechanism from the front view.

[0021] In the drawing: 1 printing frame, 2 scraper, 3 mounting frame, 4 printing plate, 5 replacement mechanism, 51 replacement frame plate, 52 limiting column, 53 adjusting plate, 54 inclined plate, 55 top column, 56 return spring, 57 guide column, 58 limiting spring, 6 spring sheet, 7 rotating plate, 8 telescopic rod, 9 spring, 10 PLC controller, 11 positioning mold, 12 electric push rod one, 13 adjusting frame, 14 linear motor, 15 electric push rod two. DETAILED DESCRIPTION

[0022] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0023] Please refer to Figures 1-6 The embodiment provides a technical scheme: an automatic circuit board printing device, which comprises a printing rack 1, a storage box is arranged at the rear end of the printing rack 1 to store printing materials, a movable scraper 2 is arranged at the upper end of the printing rack 1, a mounting rack 3 that can move up and down is arranged at the upper end of the printing rack 1, a printing plate 4 is arranged in the mounting rack 3, the printing materials are transferred to the circuit board through the transfer holes on the surface of the printing plate 4, a PLC controller 10 is arranged at the front end of the printing rack 1 to control the start and stop of the whole device, the input end of the PLC controller 10 is electrically connected to an external power supply, a positioning mold 11 is arranged in the middle of the tabletop at the lower end of the printing rack 1, a positioning placing groove is arranged at the upper end of the positioning mold 11 to position the circuit board, a first electric push rod 12 is arranged at the upper end of the printing rack 1, an adjusting rack 13 is arranged between the lower end of the extension end of the first electric push rod 12, a linear motor 14 is arranged at the upper end of the adjusting rack 13, a second electric push rod 15 is arranged on the lower surface of the mover seat of the linear motor 14, the scraper 2 is arranged at the lower end of the extension end of the second electric push rod 15, the mounting rack 3 is arranged at the lower end of the adjusting rack 13, the input ends of the first electric push rod 12, the linear motor 14 and the second electric push rod 15 are electrically connected to the output end of the PLC controller 10, the first electric push rod 12 is started, the extension end of the first electric push rod 12 drives the adjusting rack 13 and the mounting rack 3 to move downward, so that the upper surface of the circuit board is attached to the lower surface of the printing plate 4, the linear motor 14 is started, the mover seat of the linear motor 14 drives the second electric push rod 15 and the scraper 2 to move left and right, the second electric push rod 15 is started, the extension end of the second electric push rod 15 drives the scraper 2 to move up and down, and power is provided for the movement of the scraper 2, and the device further comprises a replacement mechanism 5.

[0024] The replacing mechanism 5 comprises a replacing frame plate 51 and a limiting insertion column 52. The replacing frame plate 51 is vertically and slidingly connected to the inside of the mounting rack 3. The upper and lower ends of the replacing frame plate 51 are both provided with mounting grooves for cooperating with the mounting of the printing plate 4. The printing plate 4 is located inside the mounting grooves. The limiting insertion column 52 is transversely and slidingly connected to the sliding holes at the left and right ends of the mounting rack 3. The limiting insertion column 52 penetrates through the round holes on the surface of the replacing frame plate 51 and is inserted into the insertion holes on the surface of the printing plate 4. When the printing plate 4 is replaced, the printing plate 4 is only needed to be inserted into the mounting grooves of the replacing frame plate 51. The limiting insertion column 52 is inserted into the round holes on the surface of the replacing frame plate 51 and the insertion holes on the surface of the printing plate 4. The positions of the replacing frame plate 51 and the printing plate 4 are limited. The replacing mechanism 5 further comprises an adjusting plate 53, an inclined plate 54 and a jacking column 55. The adjusting plate 53 is vertically and slidingly connected to the sliding grooves at the left and right ends of the replacing frame plate 51. The end of the adjusting plate 53 close to the limiting insertion column 52 is provided with the inclined plate 54. The jacking column 55 is arranged at the middle part of the limiting insertion column 52. The jacking column 55 is cooperatively mounted with the inclined plate 54. During the movement of the adjusting plate 53, the jacking column 55 is pushed to move by the action force of the inclined surface of the inclined plate 54. The limiting of the replacing frame plate 51 and the printing plate 4 is cancelled. The replacing mechanism 5 further comprises a reset spring 56. The reset spring 56 is arranged between the limiting disc at the end of the limiting insertion column 52 and the side surface of the mounting rack 3. The reset spring 56 is movably sleeved on the outer arc surface of the limiting insertion column 52. The reset spring 56 provides power for the reset of the limiting insertion column 52. The replacing mechanism 5 further comprises a guide column 57. The guide column 57 is arranged at the middle part of the adjusting plate 53. The guide column 57 is vertically and slidingly connected to the guide holes on the surface of the replacing frame plate 51. The guide column 57 provides guiding support for the movement of the adjusting plate 53. The replacing mechanism 5 further comprises a limiting spring 58. The limiting spring 58 is arranged between the disc at the end of the guide column 57 and the inner wall of the replacing frame plate 51. The limiting spring 58 is movably sleeved on the outer arc surface of the guide column 57. The limiting spring 58 limits the initial position of the adjusting plate 53. The adjusting plate 53 is conveniently pressed and moved during the replacement of the printing plate 4. The vertically and upwardly facing side surface of the adjusting plate 53 close to the center of the replacing frame plate 51 and the upwardly facing inner side surface of the replacing frame plate 51 are both provided with spring sheets 6. During the installation, the printing plate 4 pushes the spring sheets 6 to deform. The action force generated by the deformation of the spring sheets 6 increases the friction force between the printing plate 4 and the adjusting plate 53. The position of the printing plate 4 is more stable. The front and rear side surfaces of the replacing frame plate 51 and the front and rear ends of the mounting rack 3 are both rotatably connected with rotating plates 7 through rotating shafts. Adjacent two rotating plates 7 are both provided with telescopic rods 8 and springs 9. The springs 9 are movably sleeved on the outer arc surfaces of the adjacent telescopic rods 8. During the movement of the replacing frame plate 51, the telescopic rods 8 are telescoped and contracted. The springs 9 apply action force to the replacing frame plate 51. The replacing frame plate 51 is more accurately moved upward and downward. The round holes on the surface of the replacing frame plate 51 are transversely coincided with the limiting insertion column 52.

[0025] The working principle of the automatic circuit board printing equipment is as follows: in use, the circuit board is placed in the positioning groove of the positioning mold 11, the electric push rod one 12 is started through the PLC controller 10, the telescopic end of the electric push rod one 12 drives the adjusting frame 13 and the mounting frame 3 to move downwards, the upper surface of the circuit board is attached to the lower surface of the printing plate 4, then the electric push rod two 15 is started, the telescopic end of the electric push rod two 15 drives the scraper 2 to move downwards, the linear motor 14 is started, the mover seat of the linear motor 14 drives the electric push rod two 15 and the scraper 2 to move left and right, the scraper 2 is in contact with the upper surface of the printing plate 4 and reciprocally moves, the printing material such as ink or tin paste is transferred to the surface of the circuit board through the transfer hole on the surface of the printing plate 4, and the automatic printing of the circuit board is realized; when it is necessary to replace the printing plate 4 in the use process of the automatic printing equipment, the new printing plate 4 is only needed to be inserted into the mounting groove of the replacement frame plate 51 from top to bottom, at this time, the two inclined plates 54 are located on the upper side of the top column 55, the horizontal plane of the inclined plate 54 on the lower side is in contact with the top column 55, the downward movement of the inclined plate 54 on the lower side is limited, and the limiting spring 58 on the lower side is in a contraction state; in the movement process of the new printing plate, the new printing plate exerts a downward action on the adjusting plate 53 on the upper side, the adjusting plate 53 on the upper side is pushed to drive the inclined plate 54 on the upper side to move downwards, the inclined surface of the inclined plate 54 on the upper side exerts a downward force on the top column 55, the elastic force of the reset spring 56 is overcome, the limiting insertion column 52 is pushed to move away from the old printing plate, until the limiting insertion column 52 is separated from the insertion hole of the old printing plate and the circular hole on the surface of the replacement frame plate 51, at this time, when the top column 55 is horizontally staggered with the inclined plate 54, the inclined plate 54 on the lower side moves downwards without being blocked, the inclined plate 54 on the lower side drives the adjusting plate 53 on the lower side to move downwards under the elastic force of the limiting spring 58 on the lower side, at this time, the replacement frame plate 51 can move downwards, the movement of the new printing plate pushes the replacement frame plate 51 to move downwards, with the movement of the new printing plate and the replacement frame plate 51 downwards, when the circular hole on the upper side of the replacement frame plate 51 is horizontally coincided with the limiting insertion column 52, the limiting insertion column 52 is inserted into the circular hole on the upper side of the replacement frame plate 51 under the elastic force of the reset spring 56, the movement of the replacement frame plate 51 is limited, when the insertion hole on the surface of the new printing plate is horizontally coincided with the limiting insertion column 52, the limiting insertion column 52 is continuously reset and inserted into the insertion hole on the surface of the new printing plate under the elastic force of the reset spring 56, at this time, the two inclined plates 54 are located on the lower side of the top column 55, the top column 55 is attached to the horizontal plane of the inclined plate 54 on the upper side, the fixing of the new printing plate is completed, and the limiting of the old printing plate is cancelled, the old printing plate can be taken out from the mounting groove of the replacement frame plate 51, and the printing plate 4 is replaced in the same way, and the printing plate 4 is only needed to be inserted into the mounting groove of the replacement frame plate 51 from bottom to top.

[0026] It is worth noting that the PLC controller 10 disclosed in the above embodiment can be selected as a PLC controller of NX7 model, the electric push rod one 12, the linear motor 14 and the electric push rod two 15 can be freely configured according to the actual application scene, the electric push rod one 12 and the electric push rod two 15 can be selected as electric push rods of ANT-52 model, the linear motor 14 can be selected as a linear motor of DLMFP-0407 model, and the PLC controller 10 controls the electric push rod one 12, the linear motor 14 and the electric push rod two 15 to work by using the method commonly used in the prior art.

[0027] The above is only an embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.

Claims

1. An automatic circuit board printing device, comprising a printing frame (1), a movable squeegee (2) provided at the upper end of the printing frame (1), a vertically movable mounting frame (3) provided at the upper end of the printing frame (1), and a printing plate (4) provided inside the mounting frame (3), characterized in that: It also includes the replacement mechanism (5); Replacement mechanism (5): It includes a replacement frame plate (51) and a limiting pin (52). The replacement frame plate (51) is vertically slidably connected to the inside of the mounting frame (3). Both the upper and lower ends of the replacement frame plate (51) are provided with mounting grooves that cooperate with the printing plate (4). The printing plate (4) is located inside the mounting groove. The limiting pin (52) is horizontally slidably connected to the sliding holes at the left and right ends of the mounting frame (3). The limiting pin (52) passes through the round hole on the surface of the replacement frame plate (51) and is inserted into the insertion hole on the surface of the printing plate (4).

2. The automatic circuit board printing equipment according to claim 1, characterized in that: The replacement mechanism (5) also includes an adjustment plate (53), an inclined plate (54), and a top column (55). The adjustment plate (53) slides vertically in the grooves at the left and right ends of the replacement frame plate (51). An inclined plate (54) is provided at the end of the adjustment plate (53) near the limiting insert (52). The top column (55) is located in the middle of the limiting insert (52). The top column (55) and the inclined plate (54) are installed together.

3. The automatic circuit board printing equipment according to claim 1, characterized in that: The replacement mechanism (5) also includes a reset spring (56), which is respectively disposed between the limiting plate at the end of the limiting plug (52) and the side of the mounting bracket (3), and the reset spring (56) is respectively movably sleeved on the outer arc surface of the limiting plug (52).

4. The automatic circuit board printing equipment according to claim 2, characterized in that: The replacement mechanism (5) also includes guide posts (57), which are respectively disposed in the middle of the adjusting plate (53). The guide posts (57) are vertically slidably connected to the guide holes on the surface of the replacement frame plate (51).

5. The automatic circuit board printing equipment according to claim 4, characterized in that: The replacement mechanism (5) also includes a limiting spring (58), which is respectively disposed between the disc at the end of the guide post (57) and the inner wall of the replacement frame plate (51), and the limiting spring (58) is respectively movably sleeved on the outer arc surface of the guide post (57).

6. The automatic circuit board printing equipment according to claim 2, characterized in that: The upper vertical side of the adjusting plate (53) near the center of the replacement frame plate (51) and the upper front and rear inner sides of the replacement frame plate (51) are both provided with spring plates (6).

7. The automatic circuit board printing equipment according to claim 1, characterized in that: The front and rear sides of the replacement frame plate (51) and the front and rear ends of the mounting bracket (3) are all rotatably connected to rotating plates (7) via rotating shafts. Between two adjacent rotating plates (7), there are telescopic rods (8) and springs (9). The springs (9) are respectively movably sleeved on the outer arc surface of the adjacent telescopic rods (8).

8. The automatic circuit board printing equipment according to claim 1, characterized in that: The printing press frame (1) is equipped with a PLC controller (10) at the front end. The input end of the PLC controller (10) is electrically connected to an external power source. A positioning mold (11) is provided in the middle of the table at the lower end of the printing press frame (1). An electric push rod (12) is provided at the upper end of the printing press frame (1). An adjustment frame (13) is provided between the lower ends of the telescopic ends of the electric push rod (12). A linear motor (14) is provided at the upper end of the adjustment frame (13). An electric push rod (15) is provided on the lower surface of the moving part of the linear motor (14). A scraper (2) is located at the lower end of the telescopic end of the electric push rod (15). A mounting frame (3) is located at the lower end of the adjustment frame (13). The input ends of the electric push rod (12), the linear motor (14), and the electric push rod (15) are all electrically connected to the output end of the PLC controller (10).

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