Ultrathin carbon fiber material tin printing template based on carbon fiber composite material
By using an ultra-thin carbon fiber printing stencil based on carbon fiber composite materials, combined with a multi-directional scraping and recycling tank structure, the problem of uneven solder paste filling was solved, achieving efficient and uniform solder paste printing and extending the life of the printing stencil.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-12
- Publication Date
- 2026-03-27
AI Technical Summary
When filling solder paste with existing printing templates, it is difficult to avoid missing solder paste in certain positions, requiring operators to manually replenish it, resulting in poor printing quality.
An ultra-thin carbon fiber material printing screen based on carbon fiber composite material is used, combined with square rods, toggle bars and reset components, to push solder paste in multiple directions to ensure full filling, and combined with aluminum frame and recycling tank to achieve efficient utilization of solder paste.
It improves the uniformity of solder paste filling and printing quality, extends the service life of printing stencils, and enhances the automation and efficiency of the operation.
Smart Images
Figure CN224054515U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to tin printing template technical field, especially in based on the superthin carbon fiber material tin printing template of carbon fiber composite material. BACKGROUND
[0002] The application of electronic products has penetrated into all aspects of life, and people's manufacturing requirements for electronic products are also getting higher and higher, because electronic products are increasingly small and precise, and the production of printed circuit boards (PCB) of electronic products must be completed by surface mount technology (SMT) equipment, and the first process of production, tin paste printing, is completed by tin printing template.
[0003] Before welding, the printing template is provided with corresponding holes, the scraper of the printing machine is used to fill the soldering tin paste into the holes of the printing template, and the printing template is separated from the PCB, leaving a fixed shape and thickness of tin paste on the PCB pad.
[0004] However, only by filling the soldering tin paste into the holes of the printing template with the scraper, it is inevitable that the tin paste is lacking in the specified position, and the operator can only use a simple tool such as a steel sheet to fill the missing tin paste on the printed circuit board with high line density.
[0005] Therefore, it is necessary to provide a superthin carbon fiber material tin printing template based on carbon fiber composite material to solve the above problems. CONTENT OF THE UTILITY MODEL
[0006] The utility model discloses a superthin carbon fiber material tin printing template based on carbon fiber composite material, which solves the problem that only by filling the soldering tin paste into the holes of the printing template with the scraper, it is inevitable that the tin paste is lacking in the specified position, and the operator can only use a simple tool such as a steel sheet to fill the missing tin paste on the printed circuit board with high line density.
[0007] To achieve the above object, the utility model provides the following technical scheme: a superthin carbon fiber material tin printing template based on carbon fiber composite material, including base, the base is hinged with aluminium frame, the bottom fixedly connected with printing screen plate of aluminium frame, the upper half sliding connection of aluminium frame inside has sliding frame, the sliding frame is U type structure, the both sides inner wall of aluminium frame all are set up with the sliding groove, the sliding groove between two sliding connection has square bar, the square bar is equipped in the sliding frame, the square bar and sliding frame sliding connection, the square bar is fixedly connected with the bar that stirs, the bar that stirs is slidingly attached on the printing screen plate, the inner wall of one sliding groove is provided with the protruding piece that drives the square bar to swing back and forth, the protruding piece is set up as a plurality of, and a plurality of protruding pieces are distributed at equal intervals.
[0008] Preferably, the bar that stirs is set as a plurality of, and a plurality of bars that stir are distributed at equal intervals.
[0009] Preferably, the toggle bar is in S-shaped structure.
[0010] Preferably, one end of the square rod is provided with a reset assembly, the reset assembly comprises a square plate and a spring, the square plate is fixedly connected on the square rod, the spring is sleeved on the outside of the square rod, one end of the spring is fixedly connected on the square plate, and the other end of the spring is fixedly connected on the sliding frame.
[0011] Preferably, the inside of the sliding frame is fixedly connected with a round rod, both ends of the round rod are rotatably connected with rotating blocks, torsion springs are fixedly connected between the rotating blocks and the inner wall of the sliding frame, the torsion springs are sleeved on the outside of the round rod, a scraper is fixedly connected between the two rotating blocks, and the scraper is slidably attached on the printing screen plate.
[0012] Preferably, the top of the sliding frame is fixedly connected with a handle.
[0013] Preferably, the upper surface of the base is fixedly connected with a storage table, and the storage table is correspondingly distributed with the printing screen plate.
[0014] Preferably, the printing screen plate and the inner wall of the aluminum frame form a recycling groove for recycling the tin paste.
[0015] The technical effects and advantages of the present application are as follows:
[0016] 1. The square rod, toggle bar and reset assembly are arranged to make the tin paste flow onto the circuit board through the holes of the printing screen plate from multiple directions, so that the phenomenon of lack of tin paste is avoided.
[0017] 2. The toggle bar is in S-shaped structure, and the S-shaped structure can expand the direction and range of pushing and scraping.
[0018] 3. After the scraper finishes pushing and scraping on the printing screen plate, the remaining tin paste is pushed into the inside of the recycling container through the recycling groove, so as to be recycled and utilized. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 The present application is based on the schematic structure diagram of the ultra-thin carbon fiber material tin printing template based on carbon fiber composite material.
[0020] Figure 2 The present application is based on the schematic structure diagram of the ultra-thin carbon fiber material tin printing template based on carbon fiber composite material.
[0021] Figure 3 The present application is based on the schematic structure diagram of the ultra-thin carbon fiber material tin printing template based on carbon fiber composite material. Figure 2 The present application is based on the schematic structure diagram of the ultra-thin carbon fiber material tin printing template based on carbon fiber composite material.
[0022] Figure 4 The present application is based on the schematic structure diagram of the ultra-thin carbon fiber material tin printing template based on carbon fiber composite material.
[0023] Figure 5 The utility model discloses Figure 4 The structure amplification schematic view of B is shown.
[0024] In the figure: 1, base; 2, aluminum frame; 3, object table; 4, printing screen plate; 5, recovery groove; 6, sliding frame; 7, square rod; 8, toggle bar; 9, sliding groove; 10, protruding block; 11, square plate; 12, spring; 13, round rod; 14, rotating block; 15, torsion spring; 16, doctor blade; 17, handle. DETAILED DESCRIPTION
[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.
[0026] The utility model provides a based on carbon fiber composite material's superthin carbon fiber material printing tin template as Figures 1-5 As shown in the figure, the utility model discloses a based on carbon fiber composite material's superthin carbon fiber material printing tin template, including base 1, the aluminum frame 2 is hinged on base 1, and the bottom end of aluminum frame 2 is fixedly connected with printing screen plate 4, and printing screen plate 4 uses carbon fiber composite material;The thickness of carbon fiber composite material is 20-40 μm, and it is superthin, and carbon fiber composite material adopts the process method of carbon fiber silk flat laying, and warp and weft are interwoven to form printing screen plate 4 by epoxy resin combination;Printing screen plate 4 in prior art is usually made of SUS304 stainless steel material, but the tensile property of SUS304 stainless steel material is only about 1200MPa, and carbon fiber composite material is used in the utility model, and the tensile property of carbon fiber composite material is better.
[0027] When actually using, a lot of precise holes are engraved on printing screen plate 4, and the diameter of hole is usually 60-80 μm, when printing screen plate 4 made of SUS304 stainless steel material is stretched, the position of hole will be offset with the position of base plate at the bottom of printing screen plate 4, and the problem of reducing printing effect is caused;And printing screen plate 4 made of carbon fiber composite material in the utility model can increase printing times and printing quality based on the better tensile property of carbon fiber composite material.
[0028] In the utility model, object table 3 is fixedly connected to the upper surface of base 1, object table 3 is correspondingly distributed with printing screen plate 4, and locking structure is arranged between base 1 and aluminum frame 2, including bolt and the like. When using, the printed circuit board to be printed is placed on object table 32, then aluminum frame 2 is turned over, printing screen plate 4 is buckled on the printed circuit board on object table 3, and the locking between base 1 and aluminum frame 2 is completed, then tin paste is poured on printing screen plate 4.
[0029] The upper half of the aluminum frame 2 is slidably connected with a sliding frame 6, which is in a U-shaped structure. A handle 17 is fixedly connected to the top of the sliding frame 6 to facilitate the movement of the sliding frame 6. The utility model is especially suitable for small batch production, and the operator pushes the sliding frame 6 by holding the handle 17.
[0030] A round rod 13 is fixedly connected to the inside of the sliding frame 6. Both ends of the round rod 13 are rotatably connected with rotating blocks 14. The rotating blocks 14 are fixedly connected with torsion springs 15 between the inner wall of the sliding frame 6, and the torsion springs 15 are sleeved on the outside of the round rod 13. A scraper 16 is fixedly connected between the two rotating blocks 14, and the scraper 16 is slidably attached to the printing screen 4. The elastic force of the torsion spring 15 makes the scraper 16 tightly attached to the printing screen 4. The operator pushes the sliding frame 6 by holding the handle 17, and the scraper 16 scrapes the solder paste, so that the solder paste flows through the holes of the printing screen 4 to the circuit board, realizing the solder paste printing work of the circuit board.
[0031] Further, the aluminum frame 2 is made of solid aluminum material; the overall strength is high, and when the printing screen 4 is fixed in the aluminum frame 2, it can ensure that the surface of the printing screen 4 is in an absolutely flat state. When the scraper 16 moves back and forth on the surface of the printing screen 4, it is not easy to cause the printing screen 4 to shrink inward. Therefore, based on the use of an aluminum frame 2 with high enough strength, the printing screen 4 made of carbon fiber composite material can be in an absolutely flat state, thereby increasing the printing effect and service life and increasing the customer experience.
[0032] It should be noted that the aluminum frame 2 can also be made of materials with high enough hardness such as marble frame.
[0033] Considering that the solder paste is filled into the opening of the printing screen 4 by the scraper 16 from a single direction, it is inevitable that there is a lack of solder paste at the specified position. The inner walls of the two sides of the aluminum frame 2 are provided with sliding grooves 9, and a square rod 7 is slidably connected between the two sliding grooves 9. The square rod 7 is provided on the sliding frame 6, and the square rod 7 is slidably connected with the sliding frame 6. The square rod 7 is fixedly connected with a plurality of actuating bars 8, and the plurality of actuating bars 8 are evenly distributed. The actuating bars 8 are slidably attached to the printing screen 4. The inner wall of one of the sliding grooves 9 is provided with a plurality of protrusions 10 for swinging the square rod 7 back and forth. The plurality of protrusions 10 are evenly distributed. The end of the protrusion 10 close to the printing screen 4 is an arc surface (see Figure 4 ).
[0034] One end of the square rod 7 is provided with a reset assembly, which comprises a square plate 11 and a spring 12. The square plate 11 is fixedly connected to the square rod 7, the spring 12 is sleeved outside the square rod 7, one end of the spring 12 is fixedly connected to the square plate 11, and the other end of the spring 12 is fixedly connected to the sliding frame 6. In specific use, the actuating bar 8 is at the front end of the moving direction of the scraper 16. The reset assembly cooperates with the protrusion 10, so that the square rod 7 also swings back and forth during movement.
[0035] During work, the sliding frame 6 moves to drive the square rod 7 to move, so that the actuating bar 8 moves synchronously. Under the cooperation of the protrusion 10 and the reset assembly, the square rod 7 also swings back and forth during movement, and drives the actuating bar 8 to push and scrape the solder paste back and forth. In cooperation with the pushing and scraping action of the scraper 16, the solder paste is more fully flowed to the circuit board through the holes of the printing screen plate 4 from multiple directions, so that the phenomenon of lack of solder paste is avoided.
[0036] Moreover, since the actuating bar 8 is at the front end of the moving direction of the scraper 16, the solder paste can be fully pushed and scraped below the sliding frame 6.
[0037] In order to improve the pushing and scraping effect of the actuating bar 8, the actuating bar 8 is in S-shaped structure, and the S-shaped structure can expand the direction and range of pushing and scraping.
[0038] Considering that the solder paste is more fully flowed to the circuit board through the holes of the printing screen plate 4 from multiple directions, the scraper 16 and the actuating bar 8 can all cause the abrasion of the printing screen plate 4, and the existing printing screen plate 4 mostly uses SUS304 stainless steel material. Since the semiconductor elements used in the industry are more and more miniaturized, the aperture opened in the key link of printing the solder paste is more and more precise, and the plate material used in the printing screen plate 4 is also more and more thin. The thickness of the SUS304 stainless steel is used to 0.02mm / 0.025mm / 0.03mm, but the tensile of the SUS304 stainless steel sheet material can only reach about 1200Mpa. In the process of printing use, the service life of the printing screen plate 4 can be affected due to the effect of printing pushing and scraping pressure. The printing screen plate 4 of the utility model changes the SUS304 stainless steel material into carbon fiber composite material, and the printing frequency life can reach 2-3 times of the SUS304 stainless steel material under the condition that the thickness is also ultra-thin.
[0039] Considering the recovery of the solder paste, the printing screen plate 4 and the inner wall of the aluminum frame 2 form a recovery groove 5 for recovering the solder paste. During the printing process, the scraper 16 moves towards the recovery groove 5, the recovery container can be placed on the base 1 and located below the recovery groove 5, and after the pushing and scraping of the scraper 16 on the printing screen plate 4 is finished, the remaining solder paste is pushed into the inside of the recovery container from the recovery groove 5, so as to be recycled.
Claims
1. An ultra-thin carbon fiber material printing tin template based on carbon fiber composite material, comprising a base (1), characterized in that: The base (1) is hinged with an aluminum frame (2), the bottom end of the aluminum frame (2) is fixedly connected with a printing screen (4), the upper half of the inside of the aluminum frame (2) is slidably connected with a sliding frame (6), the sliding frame (6) is in U-shaped structure, the two side inner walls of the aluminum frame (2) are both provided with a sliding groove (9), a square bar (7) is slidably connected between the two sliding grooves (9), the square bar (7) penetrates the sliding frame (6), the square bar (7) is slidably connected with the sliding frame (6), the square bar (7) is fixedly connected with a push bar (8), the push bar (8) is slidably attached to the printing screen (4), the inner wall of one of the sliding grooves (9) is provided with a protrusion (10) for driving the square bar (7) to swing back and forth, the protrusion (10) is provided with a plurality of protrusions (10), and the plurality of protrusions (10) are distributed at equal distances.
2. The ultra-thin carbon fiber material printing plate based on carbon fiber composite material according to claim 1, characterized in that: The push bar (8) is provided with a plurality of push bars (8), and the plurality of push bars (8) are distributed at equal distances.
3. The ultra-thin carbon fiber material printing plate based on carbon fiber composite material according to claim 2, characterized in that: The push bar (8) is in S-shaped structure.
4. The ultra-thin carbon fiber material printing plate based on carbon fiber composite material according to claim 1, characterized in that: One end of the square bar (7) is provided with a reset assembly, the reset assembly comprises a square plate (11) and a spring (12), the square plate (11) is fixedly connected with the square bar (7), the spring (12) is sleeved outside the square bar (7), one end of the spring (12) is fixedly connected with the square plate (11), and the other end of the spring (12) is fixedly connected with the sliding frame (6).
5. The ultra-thin carbon fiber material printing plate based on carbon fiber composite material according to claim 4, characterized in that: The inside of the sliding frame (6) is fixedly connected with a round rod (13), both ends of the round rod (13) are rotatably connected with a rotating block (14), the rotating block (14) and the inner wall of the sliding frame (6) are fixedly connected with a torsion spring (15), the torsion spring (15) is sleeved outside the round rod (13), and a scraper (16) is fixedly connected between the two rotating blocks (14), the scraper (16) is slidably attached to the printing screen (4).
6. The ultra-thin carbon fiber material printing plate based on carbon fiber composite material according to claim 1, characterized in that: The top of the sliding frame (6) is fixedly connected with a handle (17).
7. The ultra-thin carbon fiber material printing plate based on carbon fiber composite material according to claim 1, characterized in that: The upper surface of the base (1) is fixedly connected with a storage table (3), and the storage table (3) is correspondingly distributed with the printing screen (4).
8. The ultra-thin carbon fiber material printing plate based on carbon fiber composite material according to claim 1, characterized in that: The printing screen (4) and the inner wall of the aluminum frame (2) form a recycling groove (5) for recycling tin paste. The printing screen (4) and the inner wall of the aluminum frame (2) form a recycling groove (5) for recycling tin paste.