Full-automatic circuit board screen printing equipment

Abstract

The utility model relates to full-automatic circuit board screen printing equipment, which belongs to the technical field of circuit board screen printing equipment and comprises a full-automatic screen printing machine, a screen printing bin and a positioning table are arranged on the full-automatic screen printing machine, and a fixing structure and a driving knot are arranged on the positioning table. According to the full-automatic circuit board screen printing equipment, an asynchronous motor is used as a driving source, and a threaded rod is controlled to rotate through mechanical transmission, so that two connecting blocks in threaded connection with the outer surface of the threaded rod are controlled to move towards the opposite sides, and then integrated fixing pieces on the same side are driven to move through connecting pieces; when the integrated fixing piece moves to a first preset value of an infrared sensor in the distance triggering induction part, the asynchronous motor is shut down, fixing of the circuit board is relieved, after the integrated fixing piece moves to a second preset value of the infrared sensor in the distance triggering induction part, the asynchronous motor is triggered to be shut down, and fixing of the printing screen is relieved; therefore, the circuit board or the printing screen plate can be conveniently and quickly replaced.

Description

Technical Field

[0001] This utility model relates to the technical field of circuit board screen printing equipment, specifically a fully automatic circuit board screen printing equipment. Background Technology

[0002] PCB screen printing equipment is a specialized device used for screen printing on circuit boards. The main types of PCB screen printing equipment include manual screen printing machines, semi-automatic screen printing machines, and fully automatic screen printing machines. Manual screen printing machines have a relatively simple structure, consisting of basic components such as a screen, squeegee, and printing table. Operation requires purely manual intervention. Semi-automatic screen printing machines add mechanical transmission devices to the manual screen printing machine, such as an electric squeegee lifting device and a fine-tuning mechanism for the printing table. Fully automatic screen printing machines are highly automated screen printing equipment, generally consisting of a feeding device, dust removal and static electricity elimination device, automatic positioning system, printing system, drying and curing system, and unloading device.

[0003] Currently, fully automatic screen printing machines use a printing system to automatically complete actions such as ink coating and squeegee printing according to preset parameters to achieve fully automatic printing of circuit boards. However, in the actual circuit board production process, different printing screens need to be changed for printing different circuit boards, which is quite troublesome and increases the labor intensity of workers. Therefore, a fully automatic circuit board screen printing equipment is proposed to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a fully automatic circuit board screen printing equipment. It has the advantage of integrated fixing of the circuit board and the printing screen, solving the problem that while fully automatic screen printing machines use a printing system to automatically complete ink coating, squeegee printing, and other actions according to preset parameters to achieve fully automatic circuit board printing, in the actual circuit board production process, different printing screens need to be changed for printing different circuit boards. Changing the corresponding printing screen is quite troublesome and increases the labor intensity of workers.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fully automatic circuit board screen printing equipment, including a fully automatic screen printing machine, wherein the fully automatic screen printing machine is provided with a screen printing chamber and a positioning table, and the positioning table is provided with a fixing structure and a driving structure;

[0006] The fixing structure includes a mounting frame fixedly installed inside the positioning platform. A threaded rod is rotatably installed between the left and right side walls of the inner cavity of the mounting frame. Two connecting blocks are threadedly connected to the outer surface of the threaded rod. A mounting post is welded to the front of each of the two connecting blocks. A connector with one end penetrating through and extending to the outside of the positioning platform is fixedly installed on the outer surface of each of the two mounting posts. An integrated fixing member for fixing the circuit board and the printing screen is fixedly installed on the opposite side of each of the two connectors.

[0007] Furthermore, the drive structure includes an asynchronous motor fixedly installed on the bottom wall of the positioning platform and located inside the mounting frame. A transmission component for driving the threaded rod to rotate is provided on the left side of the asynchronous motor, and a sensing component for monitoring the displacement distance of the connecting block is fixedly installed on the rear side wall of the inner cavity of the mounting frame.

[0008] Furthermore, the screen printing chamber is fixedly installed on the fully automatic screen printing machine, the positioning platform is fixedly installed on the fully automatic screen printing machine and located inside the screen printing chamber, and an electric lifting squeegee is installed inside the screen printing chamber.

[0009] Furthermore, both of the connecting components include a connecting sleeve and a connecting plate. The connecting sleeve is fixedly installed on the outer surface of the mounting column, and the connecting plate is fixedly installed on the top of the connecting sleeve, with one end of the connecting plate penetrating and extending to the outside of the positioning platform. The top of the positioning platform is provided with a rectangular groove, and the inner wall of the rectangular groove is slidably connected to the outer surface of the two connecting plates respectively. The opposite sides of the two connecting plates are fixedly connected to the opposite sides of the two integral fasteners respectively.

[0010] Furthermore, a limiting groove is formed on the front side wall of the inner cavity of the mounting frame, and one end of each of the two mounting posts penetrates and extends into the interior of the limiting groove. The outer surfaces of the two mounting posts are slidably connected to the inner wall of the limiting groove.

[0011] Furthermore, the sensing component includes two infrared sensors, which are respectively fixedly installed on the rear side wall of the inner cavity of the mounting frame, and are electrically connected to the asynchronous motor.

[0012] Furthermore, the two sections of thread on the outer surface of the threaded rod are symmetrically distributed from left to right. The transmission component includes a pulley and two pulleys. The two pulleys are respectively fixedly installed on the outer surface of the asynchronous motor output shaft and the threaded rod, and the belt is installed on the two pulleys.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0014] This fully automatic circuit board screen printing equipment, through the setting of a fixed structure and a drive structure, realizes the use of an asynchronous motor as a drive source and mechanical transmission to control the rotation of a threaded rod, thereby controlling the two connecting blocks connected by threads on the outer surface of the threaded rod to move to opposite sides. In turn, the connecting parts drive the integrated fixing part on the same side to move until the movement distance of the integrated fixing part triggers the first preset value of the infrared sensor in the sensing component, thereby shutting off the asynchronous motor and releasing the fixing of the circuit board. The movement distance of the integrated fixing part triggers the second preset value of the infrared sensor in the sensing component, triggering the shutdown of the asynchronous motor, thereby releasing the fixing of the printing screen. This facilitates the quick replacement of circuit boards or printing screens, thereby reducing the labor intensity of workers and enhancing the practicality of the fully automatic circuit board screen printing equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the present utility model. Figure 1 Enlarged view of point A in the image;

[0017] Figure 3 This is a perspective view of the integrated fastener, connecting block, and connecting member of this utility model.

[0018] In the diagram: 1. Fully automatic screen printing machine; 2. Screen printing chamber; 3. Electric lifting squeegee; 4. Positioning table; 51. Mounting frame; 52. Threaded rod; 53. Connecting block; 54. Mounting column; 55. Connecting piece; 56. Integrated fastener; 57. Asynchronous motor; 58. Transmission component; 59. Sensing component. Detailed Implementation

[0019] 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.

[0020] Please see Figures 1 to 3 This embodiment of a fully automatic circuit board screen printing equipment includes a fully automatic screen printing machine 1. The fully automatic screen printing machine 1 is provided with a screen printing chamber 2 and a positioning table 4. The positioning table 4 is provided with a fixing structure and a driving structure. The screen printing chamber 2 is fixedly installed on the fully automatic screen printing machine 1. The positioning table 4 is fixedly installed on the fully automatic screen printing machine 1 and located inside the screen printing chamber 2. An electric lifting scraper 3 is installed inside the screen printing chamber 2.

[0021] In this embodiment, the fixed structure includes a mounting frame 51 fixedly installed inside the positioning platform 4. A threaded rod 52 is rotatably installed between the left and right side walls of the inner cavity of the mounting frame 51. Two connecting blocks 53 are threadedly connected to the outer surface of the threaded rod 52. Mounting posts 54 are welded to the front of the two connecting blocks 53. A limiting groove is opened on the front side wall of the inner cavity of the mounting frame 51. One end of each of the two mounting posts 54 passes through and extends into the interior of the limiting groove. The outer surfaces of the two mounting posts 54 are slidably connected to the inner wall of the limiting groove, thereby restricting the mounting posts 54 to move left and right only inside the limiting groove. This allows the rotating threaded rod 52 to control the left and right movement of the connecting blocks 53. A connector 55 is fixedly installed on the outer surface of each of the two mounting posts 54, with one end passing through and extending to the outside of the positioning platform 4. An integrated fastener 56 for fixing the circuit board and the printing screen is fixedly installed on the opposite side of each of the two connectors 55.

[0022] Each of the two connectors 55 includes a connecting sleeve and a connecting plate. The connecting sleeve is fixedly installed on the outer surface of the mounting post 54, and the connecting plate is fixedly installed on the top of the connecting sleeve. One end of the connecting plate passes through and extends to the outside of the positioning platform 4. The top of the positioning platform 4 is provided with a rectangular groove. The inner wall of the rectangular groove is slidably connected to the outer surface of the two connecting plates respectively. The opposite sides of the two connecting plates are fixedly connected to the opposite sides of the two integral fasteners 56 respectively, so as to facilitate the connection of the integral fasteners 56 and the mounting post 54 on the same side using the connectors 55.

[0023] By adopting the above technical solution, the drive structure drives the threaded rod 52 to rotate, thereby causing the two threaded connecting blocks 53 on the threaded rod 52 to move to opposite sides. The moving connecting blocks 53 drive the integrated fixing parts 56 to move synchronously through the connecting parts 55, thereby releasing the fixing of the circuit board, making it easier to replace the circuit board to be printed. The asynchronous motor 57 is then started again, thereby controlling the two connecting blocks 53 to continue moving to opposite sides, thereby controlling the two integrated fixing parts 56 to move to opposite sides again and release the fixing of the printing screen.

[0024] In this embodiment, the drive structure includes an asynchronous motor 57 fixedly installed on the bottom wall of the positioning platform 4 and located inside the mounting frame 51. A transmission component 58 for driving the threaded rod 52 to rotate is provided on the left side of the asynchronous motor 57. The two threads on the outer surface of the threaded rod 52 are symmetrically distributed from left to right. The transmission component 58 includes a pulley and two pulleys. The two pulleys are fixedly installed on the output shaft of the asynchronous motor 57 and the outer surface of the threaded rod 52, respectively. The belt is installed on the two pulleys so that the rotating output shaft can drive the threaded rod 52 to rotate using the belt. A sensing component 59 for monitoring the displacement distance of the connecting block 53 is fixedly installed on the rear side wall of the inner cavity of the mounting frame 51.

[0025] The sensing component 59 includes two infrared sensors, which are fixedly installed on the rear side wall of the inner cavity of the mounting frame 51. The two infrared sensors are electrically connected to the asynchronous motor 57, which facilitates the shutdown of the asynchronous motor 57 after the connecting block 53 moves to a specific position.

[0026] Using the above technical solution, the asynchronous motor 57 is started, which drives the output shaft to rotate. The rotating output shaft drives the threaded rod 52 to rotate via the belt in the transmission component 58. The movement distance of the connecting block 53 triggers the first and second preset values ​​of the infrared sensor in the sensing component 59, which then triggers the asynchronous motor 57 to stop.

[0027] The working principle of the above embodiments is as follows:

[0028] In operation, this fully automatic circuit board screen printing equipment starts with the asynchronous motor 57, which drives the output shaft to rotate. The rotating output shaft, via a belt in the transmission component 58, drives the threaded rod 52 to rotate, causing the two threaded connecting blocks 53 on the threaded rod 52 to move to opposite sides. The moving connecting blocks 53, through the connecting piece 55, drive the integrated fixing piece 56 to move synchronously until the moving distance of the connecting blocks 53 triggers the first preset value of the infrared sensor in the sensing component 59, thereby releasing the fixing of the circuit board and facilitating the replacement of the circuit board to be printed. The asynchronous motor 57 is then started again, controlling the two connecting blocks 53 to continue moving to opposite sides and triggering the second preset value of the infrared sensor, thereby controlling the two integrated fixing pieces 56 to move to opposite sides again and releasing the fixing of the printing screen, thus facilitating the replacement of printing screens of different sizes.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fully automatic circuit board screen printing equipment, comprising a fully automatic screen printing machine (1), characterized in that: The fully automatic screen printing machine (1) is equipped with a screen printing chamber (2) and a positioning table (4), and the positioning table (4) is equipped with a fixing structure and a driving structure. The fixing structure includes a mounting frame (51) fixedly installed inside the positioning platform (4). A threaded rod (52) is rotatably installed between the left and right side walls of the inner cavity of the mounting frame (51). Two connecting blocks (53) are threadedly connected to the outer surface of the threaded rod (52). Mounting posts (54) are welded to the front of the two connecting blocks (53). A connector (55) with one end penetrating through and extending to the outside of the positioning platform (4) is fixedly installed on the outer surface of the two mounting posts (54). An integrated fastener (56) for fixing the circuit board and the printing screen is fixedly installed on the opposite side of the two connectors (55).

2. The fully automatic circuit board screen printing equipment according to claim 1, characterized in that: The drive structure includes an asynchronous motor (57) fixedly installed on the bottom wall of the positioning platform (4) and located inside the mounting frame (51). A transmission component (58) for driving the threaded rod (52) to rotate is provided on the left side of the asynchronous motor (57). A sensing component (59) for monitoring the displacement distance of the connecting block (53) is fixedly installed on the rear side wall of the inner cavity of the mounting frame (51).

3. The fully automatic circuit board screen printing equipment according to claim 1, characterized in that: The screen printing chamber (2) is fixedly installed on the fully automatic screen printing machine (1), the positioning platform (4) is fixedly installed on the fully automatic screen printing machine (1) and located inside the screen printing chamber (2), and an electric lifting scraper (3) is installed inside the screen printing chamber (2).

4. The fully automatic circuit board screen printing equipment according to claim 1, characterized in that: Both of the connecting parts (55) include a connecting sleeve and a connecting plate. The connecting sleeve is fixedly installed on the outer surface of the mounting column (54). The connecting plate is fixedly installed on the top of the connecting sleeve, and one end of the connecting plate extends through and to the outside of the positioning platform (4). The top of the positioning platform (4) is provided with a rectangular groove. The inner wall of the rectangular groove is slidably connected to the outer surface of the two connecting plates respectively. The opposite sides of the two connecting plates are fixedly connected to the opposite sides of the two integral fasteners (56).

5. The fully automatic circuit board screen printing equipment according to claim 1, characterized in that: The front wall of the inner cavity of the mounting frame (51) has a limiting groove. One end of each of the two mounting posts (54) extends through and into the interior of the limiting groove. The outer surfaces of the two mounting posts (54) are slidably connected to the inner wall of the limiting groove.

6. The fully automatic circuit board screen printing equipment according to claim 2, characterized in that: The sensing component (59) includes two infrared sensors, which are fixedly installed on the rear side wall of the inner cavity of the mounting frame (51) and electrically connected to the asynchronous motor (57).

7. The fully automatic circuit board screen printing equipment according to claim 2, characterized in that: The two threads on the outer surface of the threaded rod (52) are symmetrically distributed from left to right. The transmission component (58) includes a pulley and two pulleys. The two pulleys are respectively fixedly installed on the output shaft of the asynchronous motor (57) and the outer surface of the threaded rod (52). The belt is installed on the two pulleys.

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