Silver paste printing device of antenna module

Abstract

The utility model relates to the technical field of antenna module silver paste printing, in particular to a silver paste printing device of an antenna module, which comprises a base, a support arm and an electrode plate are fixedly connected to the upper end of the base, a substrate is clamped to the upper end of the electrode plate, an X-axis linear sliding table is fixedly connected to the upper end of the support arm, and a moving seat is slidably connected to the X-axis linear sliding table. A Y-axis linear sliding table is fixedly connected to the lower end of the moving seat, a sliding frame is slidably connected to the lower end of the Y-axis linear sliding table, an ink pipe used for containing ink is clamped to the sliding frame, a piezoelectric diaphragm used for pressing silver paste is clamped to the upper end in the ink pipe, and a stirring assembly used for preventing the silver paste from precipitating is rotationally connected to the interior of the ink pipe; the ink tube is controlled to move through the x-axis linear sliding table, the Y-axis linear sliding table and other structures, the piezoelectric diaphragm and the electrode plate enable silver paste to overcome viscosity and surface tension, ink jet printing is facilitated, the stirring assembly stirs the silver paste in the ink tube, the silver paste is prevented from precipitating in the ink tube, the silver paste is kept in a uniform state, and the printing quality of the silver paste is improved.

Description

Technical Field

[0001] The utility model relates to the field of silver paste printing for antenna modules, and specifically to a silver paste printing device for antenna modules. Background Art

[0002] With the rapid development of intelligence, intelligent wearable devices are developing towards thinner and lighter directions. However, without sacrificing the number of interconnection communications and intelligent components, many electrodes and wires are no longer assembled inside watches using copper wires or copper sheets alone, but through printing. The long-wave antenna module of a smart phone is hidden under the glass cover plate. Silver paste printing replaces copper coil winding, which has a very low resistance and effectively reduces the structural thickness of the glass cover plate of the smart watch.

[0003] Existing silver paste printing devices for antenna modules, such as the inkjet printing device proposed in the patent application number "CN202222422911.6", supply a liquid composition to a target substrate through structures such as a workbench and a head assembly. The head assembly moves in one direction to overlap with a film and sprays the composition onto the film to form an inspection pattern. The head assembly includes a storage tank capable of storing the liquid composition and a nozzle capable of spraying the composition onto the target substrate BS.

[0004] However, the existing technology has defects. For some silver pastes with relatively high viscosities, there are high viscosities and surface tensions at the nozzle, which is not convenient for inkjet printing. Moreover, the silver paste is prone to precipitation inside the storage tank, resulting in uneven silver paste and poor silver paste printing quality. Therefore, a silver paste printing device for antenna modules is proposed. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a silver paste printing device for antenna modules to solve the problems raised in the above background art.

[0006] The purpose of the utility model can be realized through the following technical solutions:

[0007] A silver paste printing device for antenna modules includes a base. A support arm and an electrode plate are fixedly connected to the upper end of the base. A substrate is clamped to the upper end of the electrode plate. An X-axis linear slide is fixedly connected to the upper end of the support arm. A moving seat is slidably connected to the X-axis linear slide. A Y-axis linear slide is fixedly connected to the lower end of the moving seat. A sliding frame is slidably connected to the lower end of the Y-axis linear slide. An ink tube for containing ink is clamped to the sliding frame. A piezoelectric diaphragm for pressing the silver paste is clamped to the upper end inside the ink tube. A stirring assembly for preventing silver paste precipitation is rotatably connected inside the ink tube.

[0008] Preferably, a cover is hermetically clamped to the upper end of the ink tube. The piezoelectric diaphragm is clamped to the lower end of the cover. A connecting tube for adding silver paste to the ink tube is fixedly connected to the side wall of the ink tube.

[0009] Preferably, the stirring assembly includes a driving member fixedly connected to the upper end of the cover. A rotating rod is fixedly connected to the output end of the driving member. The rotating rod is rotatably connected inside the ink tube, and a baffle is fixedly connected to the side wall of the rotating rod.

[0010] Preferably, a chute is formed on the side wall of the Y-axis linear slide. A connecting frame is fixedly connected to one side of the sliding frame, and one end of the connecting frame is slidably connected inside the chute.

[0011] Preferably, a plurality of mounting seats are fixedly connected to the upper end of the base. A connecting plate is sleeved on each of the plurality of mounting seats. One end of the connecting plate is fixedly connected with a pressing plate, and the pressing plate is clamped and matched with the substrate. A pressing block is threadedly connected to the upper end of each of the plurality of mounting seats, and each of the plurality of pressing blocks is press-connected with the upper end of each of the plurality of connecting plates.

[0012] Preferably, a groove is formed on the base, and a protective cover is inserted into the groove. The protective cover covers the X-axis linear slide.

[0013] The beneficial effects of the present utility model are as follows:

[0014] 1. The present utility model controls the movement of the ink tube through structures such as the X-axis linear slide, Y-axis linear slide, moving seat, and sliding frame. When the piezoelectric diaphragm inside the ink tube is energized, it will deform, thereby exerting pressure inside the ink tube, squeezing the silver paste inside the ink tube to spray and print. The electrode plate is electrified, generating an electric field with the ink tube, enabling the silver paste to overcome viscosity and surface tension, and spraying the conductive silver paste from the tip of the ink tube to the substrate for printing, facilitating inkjet printing.

[0015] 2. The present utility model controls the rotation of the rotating rod through the driving member. The rotation of the rotating rod causes the baffle to stir the silver paste inside the ink tube, preventing the silver paste from precipitating inside the ink tube, keeping the silver paste in a uniform state, and improving the printing quality of the silver paste. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings;

[0017] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 It is a schematic diagram of the ink tube driving structure of the present utility model;

[0019] Figure 3 It is a schematic diagram of the internal structure of the ink tube of the present utility model;

[0020] Figure 4 It is a schematic diagram of the connecting plate structure of the present utility model;

[0021] The reference numerals in the figures are as follows:

[0022] 1. Base; 2. Electrode plate; 3. Protective cover; 4. Substrate; 5. Support arm; 6. Groove; 7. X-axis linear slide; 8. Moving seat; 9. Y-axis linear slide; 10. Chute; 11. Sliding frame; 12. Connecting frame; 13. Ink tube; 14. Cover; 15. Driving member; 16. Connecting pipe; 17. Piezoelectric diaphragm; 18. Rotating rod; 19. Pushing plate; 20. Mounting seat; 21. Pressing block; 22. Connecting plate; 24. Pressing plate. Detailed implementation manners

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] A silver paste printing device for an antenna module, as Figures 1-4 shown, includes a base 1. A support arm 5 and an electrode plate 2 are fixedly connected to the upper end of the base 1. A substrate 4 is clamped to the upper end of the electrode plate 2. Silver paste is printed on the substrate 4 to replace the coil. A support arm 5 is fixedly connected to the upper end of the support arm 5. An X-axis linear slide 7 is slidably connected to the X-axis linear slide 7. A moving seat 8 is fixedly connected to the lower end of the moving seat 8. A Y-axis linear slide 9 is slidably connected to the lower end of the Y-axis linear slide 9. A sliding frame 11 is slidably connected to the lower end of the sliding frame 11. An ink tube 13 for containing ink is clamped to the sliding frame 11. A piezoelectric diaphragm 17 for pressing the silver paste is clamped to the upper end inside the ink tube 13. A stirring assembly for preventing silver paste precipitation is rotatably connected inside the ink tube 13.

[0025] Silver particles in silver ink (silver paste) are selected with an average particle size < 200 nm. Due to the powder metallurgy principle, fine particles can be re-aggregated at low temperature and sintered into crystalline silver. The resin in the ink is selected as a low-temperature volatile resin, which only maintains the ink and the pattern-forming property, as well as the lubricity of the nozzle during the printing process. After drying after printing, it quickly volatilizes, allowing the silver powder to aggregate and sinter into crystalline silver. The inkjet printing of this printing device is different from traditional inkjet printing. By applying an external electric field, liquid ink is pulled out, while traditional printing can only print aqueous ink with a viscosity of 10 cps. Through this silver paste printing device, high-viscosity ink with a viscosity of 20,000 cps can overcome the viscosity and surface tension of the ink and spray the ink from the tip of the cone onto the substrate.

[0026] The moving seat 8 is controlled to move in the X-axis direction by the X-axis linear slide 7, and the sliding frame 11 is controlled to move in the Y-axis direction by the Y-axis linear slide 9, thereby controlling the movement of the ink tube 13. A structure for driving the ink tube 13 to move along the Z-axis is added to the connecting frame 12, which can control the lifting of the ink tube 13 and adjust the distance between the nozzle of the ink tube 13 and the substrate 4. An appropriate amount of silver paste is added inside the ink tube 13. When the piezoelectric diaphragm 17 inside the ink tube 13 is energized, it will deform, thereby applying pressure inside the ink tube 13 and extruding the silver paste inside the ink tube 13 to spray and print. The electrode plate 2 is electrified, and an electric field is generated between it and the nozzle of the ink tube 13 (a power connection structure cooperating with the electrode plate 2 can be added at the nozzle of the ink tube 13 to generate an electric field between the electrode plate 2 and the nozzle), so that the silver paste overcomes viscosity and surface tension, and the conductive silver paste is sprayed from the tip of the ink tube 13 to the substrate 4 for printing, facilitating inkjet printing. The stirring assembly stirs the silver paste inside the ink tube 13 to prevent the silver paste from precipitating inside the ink tube 13, keeping the silver paste in a uniform state and improving the printing quality of the silver paste.

[0027] As Figure 3 shown, a cover 14 is hermetically clamped at the upper end of the ink tube 13, the piezoelectric diaphragm 17 is clamped at the lower end of the cover 14, and a connecting tube 16 for adding silver paste to the ink tube 13 is communicatively and fixedly connected to the side wall of the ink tube 13.

[0028] The cover 14 seals the upper end of the ink tube 13. The piezoelectric diaphragm 17 is installed along with the cover 14 and is located at the upper end inside the ink tube 13, applying pressure inside the ink tube 13, and silver paste is added to the inside of the ink tube 13 through the connecting tube 16.

[0029] As Figure 3 shown, the stirring assembly includes a driving member 15. The driving member 15 is fixedly connected to the upper end of the cover 14. A rotating rod 18 is fixedly connected to the output end of the driving member 15. The rotating rod 18 is rotatably connected inside the ink tube 13, and a baffle 19 is fixedly connected to the side wall of the rotating rod.

[0030] The driving member 15 (the driving member 15 can adopt a motor, model number F260) controls the rotation of the rotating rod 18. The rotation of the rotating rod 18 causes the baffle 19 to stir the silver paste inside the ink tube 13, preventing the precipitation of the internal components of the silver paste.

[0031] As Figure 2 shown, a chute 10 is provided on the side wall of the Y-axis linear slide 9. A connecting frame 12 is fixedly connected to one side of the sliding frame 11. One end of the connecting frame 12 is slidably connected inside the chute 10.

[0032] One end of the connecting frame 12 is slidably connected inside the chute 10, increasing the load-bearing stability of the sliding frame 11.

[0033] As Figure 2 and Figure 4As shown in the figure, a plurality of mounting seats 20 are fixedly connected to the upper end of the base 1. A connecting plate 22 is sleeved on each of the plurality of mounting seats 20. One end of the connecting plate 22 is fixedly connected with a pressing plate 24. The pressing plate 24 is in clamping fit with the substrate 4. A pressing block 21 is threadedly connected to the upper end of each of the plurality of mounting seats 20. The plurality of pressing blocks 21 are respectively in pressing fit with the upper ends of the plurality of connecting plates 22.

[0034] Place the substrate 4 flat on the electrode plate 2, slide the connecting plate 22, adjust the position of the connecting plate 22 so that the pressing plate 24 is clamped and pressed at the four corners of the substrate 4, and then turn the pressing block 21 to make the pressing block 21 squeeze the connecting plate 22 to stabilize the position of the connecting plate 22.

[0035] As Figure 1 shown in the figure, a groove 6 is provided on the base 1, and a protective cover 3 is inserted into the groove 6. The protective cover 3 covers the X-axis linear slide 7.

[0036] The protective cover 3 is clamped and installed on the base 1 through the groove 6, and structures such as the X-axis linear slide 7 are located inside the protective cover 3 to prevent external dust from affecting the printing effect.

[0037] The working principle of a silver paste printing device for an antenna module provided by the present utility model is as follows:

[0038] The movement of the ink tube 13 is controlled by structures such as the x-axis linear slide, the Y-axis linear slide 9, the moving seat 8, and the sliding frame 11. An appropriate amount of silver paste is added inside the ink tube 13. When the piezoelectric diaphragm 17 inside the ink tube 13 is energized, it will deform, thereby applying pressure inside the ink tube 13 to squeeze the silver paste inside the ink tube 13 to spray and print. The electrode plate 2 is electrified, and an electric field is generated between the electrode plate 2 and the nozzle of the ink tube 13, so that the silver paste overcomes the viscosity and surface tension, and the conductive silver paste is sprayed from the tip of the ink tube 13 to the substrate 4 for printing, which is convenient for inkjet printing. The stirring assembly stirs the silver paste inside the ink tube 13 to prevent the silver paste from precipitating inside the ink tube 13, keeping the silver paste in a uniform state and improving the quality of silver paste printing.

[0039] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed.

Claims

1. A silver paste printing device for an antenna module, comprising a base (1), characterized in that, The upper end of the base (1) is fixedly connected with a support arm (5) and an electrode plate (2). The upper end of the electrode plate (2) is clamped with a substrate (4). The upper end of the support arm (5) is fixedly connected with an X-axis linear slide (7). A moving seat (8) is slidably connected to the X-axis linear slide (7). The lower end of the moving seat (8) is fixedly connected with a Y-axis linear slide (9). A sliding frame (11) is slidably connected to the lower end of the Y-axis linear slide (9). A ink tube (13) for containing ink is clamped on the sliding frame (11). A piezoelectric diaphragm (17) for pressing the silver paste is clamped at the upper end inside the ink tube (13). A stirring assembly for preventing the silver paste from precipitating is rotatably connected inside the ink tube (13).

2. The silver paste printing device for an antenna module according to claim 1, characterized in that, A cover (14) is hermetically clamped at the upper end of the ink tube (13). The piezoelectric diaphragm (17) is clamped at the lower end of the cover (14). A connecting pipe (16) for adding silver paste to the ink tube (13) is communicated and fixedly connected to the side wall of the ink tube (13).

3. The silver paste printing device for an antenna module according to claim 2, characterized in that, The stirring assembly includes a driving member (15). The driving member (15) is fixedly connected to the upper end of the cover (14). The output end of the driving member (15) is fixedly connected with a rotating rod (18). The rotating rod (18) is rotatably connected inside the ink tube (13). A dial plate (19) is fixedly connected to the side wall of the rotating rod.

4. The silver paste printing device for an antenna module according to claim 1, characterized in that A chute (10) is formed on the side wall of the Y-axis linear slide (9). A connecting frame (12) is fixedly connected to one side of the sliding frame (11). One end of the connecting frame (12) is slidably connected inside the chute (10).

5. The silver paste printing device for an antenna module according to claim 1, wherein Multiple mounting seats (20) are fixedly connected to the upper end of the base (1). A connecting plate (22) is sleeved on each of the multiple mounting seats (20). One end of the connecting plate (22) is fixedly connected with a pressing plate (24). The pressing plate (24) is clamped and matched with the substrate (4). Compression blocks (21) are threadedly connected to the upper ends of the multiple mounting seats (20). The multiple compression blocks (21) are respectively pressed and matched with the upper ends of the multiple connecting plates (22).

6. The silver paste printing device for an antenna module according to claim 1, characterized in that, A groove (6) is formed on the base (1). A protective cover (3) is inserted into the groove (6). The protective cover (3) covers the X-axis linear slide (7).

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