High-precision screen printing machine

Abstract

The high-precision screen printing machine is characterized in that a cache feeding mechanism, an automatic deviation rectifying mechanism, a visual alignment mechanism and a limiting discharging mechanism are sequentially arranged from right to left, a printing mechanism is erected above the visual alignment mechanism, and a discharging platform is horizontally fixed to a rack and corresponds to the left side of the visual alignment mechanism; the sensing assembly is fixed to the rack and erected above the right end of the discharging platform, the mounting plate is fixed to the discharging platform, the upper end face of the mounting plate is flush with the discharging platform, a sliding groove is formed in the mounting plate, the sliding block is arranged in the sliding groove and slidably connected with the sliding groove, the upper end of the sliding block penetrates through the sliding groove and is in threaded connection with the limiting column, and the limiting column is in a cylinder shape. The sliding blocks and the limiting columns are arranged on the front side and the rear side of the installation plate respectively, and the discharging roller is rotationally installed on the rack and corresponds to the left side of the discharging platform. The design has the advantages that the position precision of the material belt to be printed and the position precision of silver wire printing can be improved, and the quality and the qualified rate of products are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of keyboard conductive film manufacturing, and particularly relates to a high-precision screen printing machine. Background Art

[0002] The keyboard conductive film, also known as the metal shrapnel conductive film, is a PET thin sheet containing metal shrapnel and is used as a switch on circuit boards such as PCBs or FPCs. It plays an important role as a tactile switch between the user and the instrument. It realizes the conductive function by printing conductive silver paste on the PET thin sheet. Traditional screen printing machines are mostly used for the identification and patterns on hard-brush products, and the accuracy requirements for the printing position are not very high. However, for the conductive film, the printing position of its silver wire directly determines whether the keyboard keys are sensitive and stable, that is, the printing accuracy requirements for the silver wire are very high. Traditional screen hard printing machines are difficult to meet the printing accuracy requirements of silver wires. Therefore, it is necessary to manufacture a high-precision screen printing machine to solve the above problems. Content of the Utility Model

[0003] The purpose of the utility model is to provide a high-precision screen printing machine to solve the problems mentioned in the background art.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A high-precision screen printing machine includes a frame and a buffer loading mechanism, an automatic deviation correction mechanism, a vision alignment mechanism, a printing mechanism, and a limit unloading mechanism fixed on the frame. The buffer loading mechanism, the automatic deviation correction mechanism, the vision alignment mechanism, and the limit unloading mechanism are arranged in sequence from right to left. The printing mechanism is erected above the vision alignment mechanism. The limit unloading mechanism includes a blanking platform, an induction component, a mounting plate, a slider, a limit post, and a blanking roller. The blanking platform is horizontally fixed on the frame and corresponds to the left side of the vision alignment mechanism. The induction component is fixed on the frame and erected above the right end of the blanking platform. The mounting plate is fixed on the blanking platform and its upper end surface is flush with the blanking platform. Two groups of mounting plates are provided and respectively correspond to the left and right sides of the blanking platform. The mounting plate is provided with a chute. The slider is arranged in the chute and is slidably connected with the chute. The upper end of the slider passes through the chute and is threadedly connected with the limit post. The limit post is cylindrical. One group of sliders and limit posts are arranged on the front and rear sides of each group of mounting plates. The blanking roller is rotatably installed on the frame and corresponds to the left side of the blanking platform.

[0006] Further description of the present utility model: The induction component includes an X-axis slide, a first slide seat, a first locking knob, a Y-axis slide, a second slide seat, a second locking knob, and an inductor. The X-axis slide is fixed on the frame. The first slide seat is slidably connected to the X-axis slide and can slide in the left-right direction. The first locking knob is threadedly connected to the first slide seat and one end thereof contacts the X-axis slide. One end of the Y-axis slide is fixed on the first slide seat and corresponds to the upper right end of the blanking platform. The second slide seat is slidably connected to the Y-axis slide and can slide in the front-back direction. The second locking knob is threadedly connected to the second slide seat and one end thereof contacts the Y-axis slide. The inductor is fixed on the second slide seat and the sensing end faces downward.

[0007] Further description of the present utility model: The vision alignment mechanism includes an alignment platform, a transparent cover plate, a mounting base, an angle adjustment component, a lifting drive component, a mounting middle plate, an X-axis drive component, and a photographing and positioning component. The alignment platform is fixed on the frame and corresponds to the right end of the blanking platform. The transparent cover plate is fixed on the alignment platform and the upper end surface is flush with the alignment platform. The mounting base is fixed on the frame and corresponds to the lower part of the alignment platform. The angle adjustment component is fixed above the mounting base. The lifting drive component is fixed on the power output end of the angle adjustment component. The lower end of the mounting middle plate is fixed on the power output end of the lifting drive component. The X-axis drive component is fixed above the mounting middle plate. The photographing and positioning component is fixed on the power output end of the X-axis drive component and corresponds to the lower end of the transparent cover plate. Two groups of transparent cover plates are arranged on the alignment platform in the left-right direction. Two groups of X-axis drive components and photographing and positioning components are arranged on the mounting middle plate in the left-right direction.

[0008] The beneficial effects of the present utility model are as follows: The coiled material to be printed is fed by the buffer loading mechanism, and part of the tape is buffered. The position of the tape is detected in the limit blanking mechanism, and the position information is fed back to the automatic deviation correction mechanism. The automatic deviation correction mechanism finely adjusts the conveying position of the tape, so that the tape is conveyed to the vision alignment mechanism at an accurate position. The vision alignment mechanism captures the position of the tape by photographing and feeds the position information back to the printing mechanism. The printing mechanism prints the specified position of the tape according to the received position information, so as to ensure the printing accuracy. On the limit blanking mechanism, after the limit posts are loosened, the slider can move in the chute, so as to adjust the position of the limit posts. The tape being conveyed is limited by the limit posts at both left and right ends to avoid excessive deviation of the tape. Then, the edge position of the tape is detected by the induction component to determine the real-time position of the tape, and the position information is fed back to the automatic deviation correction mechanism. The advantage of this design is that it can improve the position accuracy of the tape to be printed and the position accuracy of silver wire printing, and improve the quality and qualification rate of products. Description of the Drawings

[0009] Figure 1 is the overall structure diagram of the present utility model;

[0010] Figure 2 is the structural diagram of the present utility model (wherein the frame and the printing mechanism are hidden);

[0011] Figure 3 is the structural diagram of the vision alignment mechanism in the present utility model;

[0012] Figure 4 is the structural diagram of the limit blanking mechanism in the present utility model;

[0013] Figure 5 is the structural diagram of the induction component in the present utility model;

[0014] Figure 6 is the structural diagram of the mounting plate, slider and limit post in the present utility model;

[0015] Description of the reference numerals:

[0016] 1. Frame; 2. Buffer loading mechanism; 3. Automatic deviation correction mechanism; 4. Vision alignment mechanism; 41. Alignment platform; 42. Transparent cover plate; 43. Mounting base; 44. Angle adjustment component; 45. Lifting drive component; 46. Mounting middle plate; 47. X-axis drive component; 48. Photographing and positioning component; 5. Printing mechanism; 6. Limit blanking mechanism; 61. Blanking platform; 62. Induction component; 621. X-axis slide; 622. First slide seat; 623. First locking knob; 624. Y-axis slide; 625. Second slide seat; 626. Second locking knob; 627. Inductor; 63. Mounting plate; 631. Chute; 64. Slider; 65. Limit post; 66. Blanking roller. Detailed implementation manners

[0017] The present utility model will be further described below with reference to the accompanying drawings:

[0018] As Figures 1 to 6As shown in the figure, a high-precision screen printing machine includes a frame 1, and a buffer loading mechanism 2, an automatic deviation correction mechanism 3, a vision alignment mechanism 4, a printing mechanism 5, and a limit unloading mechanism 6 fixed on the frame 1. The buffer loading mechanism 2, the automatic deviation correction mechanism 3, the vision alignment mechanism 4, and the limit unloading mechanism 6 are arranged in sequence from right to left. The printing mechanism 5 is installed above the vision alignment mechanism 4. The limit unloading mechanism 6 includes an unloading platform 61, an induction component 62, a mounting plate 63, a slider 64, a limit post 65, and an unloading roller 66. The unloading platform 61 is horizontally fixed on the frame 1 and corresponds to the left side of the vision alignment mechanism 4. The induction component 62 is fixed on the frame 1 and installed above the right end of the unloading platform 61. The mounting plate 63 is fixed on the unloading platform 61 and its upper end surface is flush with the unloading platform 61. There are two groups of mounting plates 63, which respectively correspond to the left and right sides of the unloading platform 61. A chute 631 is provided on the mounting plate 63. The slider 64 is arranged in the chute 631 and is slidably connected to the chute 631. The upper end of the slider 64 passes through the chute 631 and is threadedly connected to the limit post 65. The limit post 65 is cylindrical. One group of the slider 64 and the limit post 65 are arranged on the front and rear sides of each group of mounting plates 63. The unloading roller 66 is rotatably installed on the frame 1 and corresponds to the left side of the unloading platform 61.

[0019] The coiled material to be printed is loaded by the buffer loading mechanism 2, and part of the tape is buffered. The position of the tape is detected in the limit unloading mechanism 6, and the position information is fed back to the automatic deviation correction mechanism 3. The automatic deviation correction mechanism 3 finely adjusts the conveying position of the tape, so that the tape is conveyed to the vision alignment mechanism 4 at an accurate position. The vision alignment mechanism 4 captures the position of the tape by taking pictures and feeds the position information back to the printing mechanism 5. The printing mechanism 5 prints the specified position of the tape according to the received position information, so as to ensure the printing accuracy. On the limit unloading mechanism 6, after the limit post 65 is loosened, the slider 64 can move in the chute 631, so as to adjust the position of the limit post 65. The tape being conveyed is limited by the limit posts 65 at both ends to prevent the offset of the tape from being too large. Then, the edge position of the tape is detected by the induction component 62 to determine the real-time position of the tape, and the position information is fed back to the automatic deviation correction mechanism 3. The advantage of this design is that it can improve the position accuracy of the tape to be printed and the position accuracy of the silver wire printing, and improve the quality and qualification rate of the product.

[0020] The induction component 62 includes an X-axis slide 621, a first slide base 622, a first locking knob 623, a Y-axis slide 624, a second slide base 625, a second locking knob 626, and an inductor 627. The X-axis slide 621 is fixed on the frame 1. The first slide base 622 is slidably connected to the X-axis slide 621 and can slide in the left-right direction. The first locking knob 623 is threadedly connected to the first slide base 622 and one end thereof contacts the X-axis slide 621. One end of the Y-axis slide 624 is fixed on the first slide base 622 and corresponds to the upper right end of the blanking platform 61. The second slide base 625 is slidably connected to the Y-axis slide 624 and can slide in the front-back direction. The second locking knob 626 is threadedly connected to the second slide base 625 and one end thereof contacts the Y-axis slide 624. The inductor 627 is fixed on the second slide base 625 and the sensing end faces downward.

[0021] After the first locking knob 623 is loosened, the position of the first slide base 622 on the X-axis slide 621 can be freely adjusted. After the second locking knob 626 is loosened, the position of the second slide base 625 on the Y-axis slide 624 can be freely adjusted, so as to flexibly adjust the position of the inductor 627 to cooperate with the limit post 65 to limit the tape of different specifications.

[0022] The vision alignment mechanism 4 includes an alignment platform 41, a transparent cover plate 42, a mounting base 43, an angle adjustment component 44, a lifting drive component 45, a mounting middle plate 46, an X-axis drive component 47, and a photographing and positioning component 48. The alignment platform 41 is fixed on the frame 1 and corresponds to the right end of the blanking platform 61. The transparent cover plate 42 is fixed on the alignment platform 41 and the upper end surface is flush with the alignment platform 41. The mounting base 43 is fixed on the frame 1 and corresponds to the lower part of the alignment platform 41. The angle adjustment component 44 is fixed above the mounting base 43. The lifting drive component 45 is fixed on the power output end of the angle adjustment component 44. The lower end of the mounting middle plate 46 is fixed on the power output end of the lifting drive component 45. The X-axis drive component 47 is fixed above the mounting middle plate 46. The photographing and positioning component 48 is fixed on the power output end of the X-axis drive component 47 and corresponds to the lower end of the transparent cover plate 42. Two groups of the transparent cover plates 42 are arranged on the alignment platform 41 in the left-right direction. Two groups of the X-axis drive component 47 and the photographing and positioning component 48 are arranged on the mounting middle plate 46 in the left-right direction.

[0023] The angle adjustment component 44, the lifting drive component 45, and the X-axis drive component 47 drive the photographing and positioning component 48 to move flexibly, photograph and position the tape passing through the transparent cover plate 42, so as to determine the precise position of the tape and transmit the position information to the printing mechanism 5. The printing mechanism 5 prints silver wires at specific positions on the tape according to the received position information.

[0024] The above does not impose any limitation on the technical scope of the present utility model. Any modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A high-precision screen printing machine, characterized in that: The machine comprises a frame and a buffer feeding mechanism, an automatic deviation correction mechanism, a visual alignment mechanism, a printing mechanism and a limit feeding mechanism fixed on the frame. The buffer feeding mechanism, the automatic deviation correction mechanism, the visual alignment mechanism and the limit feeding mechanism are arranged in sequence from right to left. The printing mechanism is erected above the visual alignment mechanism. The limit feeding mechanism comprises a feeding platform, a sensing component, a mounting plate, a slider, a limit column and a feeding roller. The feeding platform is horizontally fixed on the frame and corresponds to the left side of the visual alignment mechanism. The sensing component is fixed on the frame and erected on Above the right end of the unloading platform, the mounting plate is fixed on the unloading platform and the upper end surface is flush with the unloading platform. The mounting plates are arranged in two groups and correspond to the left and right sides of the unloading platform respectively. A slide groove is provided on the mounting plate. The slider is arranged in the slide groove and is slidably connected to the slide groove. The upper end of the slider passes through the slide groove and is threadedly connected to the limit column. The limit column is cylindrical. The slider and the limit column are arranged in one group on the front and rear sides of a group of mounting plates. The unloading roller is rotatably mounted on the frame and corresponds to the left side of the unloading platform.

2. A high-precision screen printing machine according to claim 1, characterized in that: The sensing assembly includes an X-axis slide, a first slide, a first locking knob, a Y-axis slide, a second slide, a second locking knob and a sensor. The X-axis slide is fixed on the frame. The first slide is slidably connected to the X-axis slide and can slide in the left and right directions. The first locking knob is threadedly connected to the first slide and one end is in contact with the X-axis slide. One end of the Y-axis slide is fixed on the first slide and corresponds to the upper right end of the unloading platform. The second slide is slidably connected to the Y-axis slide and can slide in the front and back directions. The second locking knob is threadedly connected to the second slide and one end is in contact with the Y-axis slide. The sensor is fixed on the second slide with the sensing end facing downward.

3. A high-precision screen printing machine according to claim 1, characterized in that: The visual alignment mechanism includes an alignment platform, a transparent cover, a mounting base, an angle adjustment component, a lifting drive component, a mounting middle plate, an X-axis drive component and a photographing positioning component. The alignment platform is fixed on the frame and corresponds to the right end of the unloading platform. The transparent cover is fixed on the alignment platform and its upper end surface is flush with the alignment platform. The mounting base is fixed on the frame and corresponds to the bottom of the alignment platform. The angle adjustment component is fixed above the mounting base. The lifting drive component is fixed to the power output end of the angle adjustment component. The lower end of the mounting middle plate is fixed to the power output end of the lifting drive component. The X-axis drive component is fixed above the mounting middle plate. The photographing positioning component is fixed to the power output end of the X-axis drive component and corresponds to the lower end of the transparent cover. The transparent cover is arranged in two groups along the left and right directions on the alignment platform. The X-axis drive component and the photographing positioning component are arranged in two groups along the left and right directions on the mounting middle plate.

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