A solder stop screen printing pin bed

Abstract

The utility model discloses a kind of solder resist silk-screen nail bed, comprising: nail bed board, the inside of the nail bed board is equipped with several groups cloth nail hole, and the cloth nail hole is linear array, the inside movable sleeve joint of the cloth nail hole has support nail, the bottom end fixed connection hexagonal nail seat of the support nail, the outer wall movable sleeve joint of the hexagonal nail seat has split inner frame, the outer wall movable sleeve joint of the split inner frame has main inner frame, the outer wall of the main inner frame is movably sleeved with nail bed board, by using the modular assembly structure of support nail and hexagonal nail seat, split inner frame, the nesting positioning design of collocation main inner frame, the quick disassembly and whole group replacement of support nail are realized, different specifications split inner frame can be flexibly assembled, can be targeted to adapt to the support demand of different PCB, shorten the model change time of multi-variety production, while hexagonal cooperation structure effectively improves radial positioning accuracy, avoid support nail to sway offset, guarantee support stability.

Description

Technical Field

[0001] This utility model relates to the field of PCB manufacturing technology, specifically to a solder mask screen printing nail bed. Background Technology

[0002] The solder mask screen printing stapler is a specialized tooling for the solder mask ink screen printing process on PCB boards. It consists of a stapler bed board, support staples, and other components. The support staples can be embedded in or support the PCB board, fixing the board to prevent it from sliding during screen printing and avoiding damage and scrapping. It can also improve screen printing accuracy and efficiency, reduce manual staple placement errors, and adapt to the solder mask printing needs of different PCB boards.

[0003] Existing solder mask screen printing support pins are mostly fixed or have cumbersome disassembly and assembly structures. When changing models, they need to be rearranged, which is time-consuming and labor-intensive and prone to pin placement deviations. The support pins and base have insufficient stability and are easily loosened and uneven under the impact of screen printing, resulting in uneven stress on the PCB board, large deviations in solder mask thickness, and damage to the board. At the same time, they have poor adaptability and cannot meet the needs of rapid production of multiple varieties, affecting screen printing efficiency and product yield. Utility Model Content

[0004] This invention provides a solder resist wire printing nail bed to solve the above-mentioned problems.

[0005] This utility model provides a solder resist screen printing staple bed, comprising: a staple bed board, wherein the staple bed board has a plurality of staple holes arranged in a linear array, a support staple is movably sleeved inside the staple hole, the bottom end of the support staple is fixedly connected to a hexagonal staple base, a split inner frame is movably sleeved on the outer wall of the hexagonal staple base, a main inner frame is movably sleeved on the outer wall of the split inner frame, and the outer wall of the main inner frame is movably sleeved with the staple bed board.

[0006] Furthermore, the nail bed board and the main inner frame are provided with several sets of socket holes, and the inner wall of the socket holes is movably fitted with an axial limiting plate, the bottom end of the axial limiting plate being in contact with the hexagonal nail seat.

[0007] Furthermore, a connecting plate is fixedly connected to the front of several sets of axial limiting plates, and the outer wall of the connecting plate is in contact with the nail bed board.

[0008] Furthermore, the top of the nail bed board is fixedly connected with several sets of side limiting nails, which are arranged in a linear array with the same spacing as the support nails, and the top of the side limiting nails is higher than the top of the support nails.

[0009] Furthermore, a right-angle bracket is fixedly connected to the top of the nail bed board, and the right-angle bracket is set perpendicular to the side limiting nails at both ends.

[0010] Furthermore, the hexagonal nail holder is hexagonal, and an elastic pad is attached to the bottom end of the hexagonal nail holder. The outer wall of the elastic pad is movably connected to the split inner frame.

[0011] Furthermore, several sets of the split inner frames are fitted together, the total area of ​​the split inner frames is the same as the internal area of ​​the main inner frame, and the top of the split inner frames is fitted with the axial limiting plate.

[0012] The technical solutions provided in this application embodiment may include the following beneficial effects: 1. By adopting a modular assembly structure with support nails and hexagonal nail seats and a split inner frame, combined with the nested positioning design of the main inner frame, the support nails can be quickly disassembled and replaced as a whole. Different specifications of split inner frames can be flexibly assembled, which can be specifically adapted to the support requirements of different PCB boards, shortening the changeover time for multi-variety production. At the same time, the hexagonal structure effectively improves the radial positioning accuracy, avoids the support nails from shaking and shifting, and ensures the stability of the support.

[0013] 2. By setting a replaceable elastic support component at the bottom of the support pin, combined with the height calibration function of the axial limiting plate, it can not only adapt to the slight warping of the bottom surface of the PCB board and disperse the impact force of the silkscreen to reduce the damage to the board and the loosening of the support pin, but also accurately compensate for the processing and assembly errors to ensure that the support surface is flush. The combination design of the edge side limiting pin and the right angle bracket enables the board to be quickly positioned and double fixed, improving the silkscreen alignment accuracy and the uniformity of the solder mask thickness.

[0014] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a solder resist wire-printed nail bed provided in one embodiment of this application; Figure 2 yes Figure 1 Internal structure diagram; Figure 3 yes Figure 1 Another perspective view; Figure 4 yes Figure 1 A top view of the partial structure; Figure 5 yes Figure 1 A cross-sectional view of the local structure.

[0016] In the diagram: 1. Nail bed board; 2. Side limiting nail; 3. Right angle bracket; 4. Support nail; 5. Axial limiting plate; 6. Connecting plate; 7. Main inner frame; 8. Split inner frame; 9. Hexagonal nail seat; 10. Elastic washer. Detailed Implementation

[0017] 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.

[0018] like Figures 1 to 5 As shown, this application provides a solder resist screen printing stapler, including: a stapler board 1, the stapler board 1 having a plurality of staple holes in a linear array, a support staple 4 movably sleeved inside the staple holes, a hexagonal staple seat 9 fixedly connected to the bottom end of the support staple 4, a split inner frame 8 movably sleeved on the outer wall of the hexagonal staple seat 9, a main inner frame 7 movably sleeved on the outer wall of the split inner frame 8, and the outer wall of the main inner frame 7 movably sleeved with the stapler board 1.

[0019] After adopting the above technical solution, the pin holes of the linear array provide a standardized installation benchmark for the support pins 4. The hexagonal pin seat 9 and the hexagonal sleeve of the split inner frame 8 not only restrict the circumferential rotation of the support pins 4, but also ensure radial positioning accuracy. The split inner frame 8 is nested in the main inner frame 7 and supports all the support pins 4. When replacing the support pins, the entire set of split inner frames 8 can be taken out directly without disassembling and assembling each one, which greatly shortens the changeover time. Moreover, split inner frames 8 of different specifications can be freely assembled, which can specifically strengthen the local support force and adapt to the support requirements of different PCB boards.

[0020] It should be noted that the structural form of the split inner frame 8 can be adjusted according to the actual working conditions. For different shapes of split inner frames 8, support pins 4 with different heights, hardness or structural forms are installed inside, which can greatly improve the efficiency of support pin replacement and can specifically meet the personalized support requirements of various PCB boards.

[0021] In one optional embodiment, the nail bed board 1 and the main inner frame 7 are provided with a number of sets of socket holes, and the inner wall of the socket holes is movably fitted with an axial limiting plate 5, the bottom end of the axial limiting plate 5 being in contact with the hexagonal nail seat 9.

[0022] The axial limiting plate 5 is precisely assembled through the socket hole, and its bottom end fits into the hexagonal nail seat 9. It can strictly limit the maximum height of the support nail 4 and prevent the support nail 4 from moving upward due to force, resulting in uneven height. During assembly, the height limit calibration can be completed simply by inserting the axial limiting plate 5 into the socket hole. The operation is simple and can effectively ensure that the tops of all support nails 4 are flush, preventing uneven force on the PCB board from causing deviation in the solder mask thickness.

[0023] In one optional embodiment, a connecting plate 6 is fixedly connected to the front of several sets of axial limiting plates 5, and the outer wall of the connecting plate 6 is in contact with the nail bed board 1.

[0024] The connecting plate 6 connects multiple sets of axial limiting plates 5 into a whole, which can simultaneously calibrate the installation position of all axial limiting plates 5, avoid the support nail height error caused by the offset of a single limiting plate, and the design of fitting the nail bed plate 1 enhances the overall rigidity of the limiting structure. It can resist the impact of the scraper during screen printing, prevent the limiting plates from loosening, ensure the stability of the height limiting effect, and can be removed and placed as a whole during disassembly and assembly, improving the operation efficiency.

[0025] In one optional embodiment, a number of sets of side limiting nails 2 are fixedly connected to the top of the nail bed board 1. The side limiting nails 2 and the support nails 4 are arranged in a linear array with the same spacing, and the top of the side limiting nails 2 is higher than the top of the support nails 4.

[0026] Side limiting pins 2 are only arranged on two adjacent sides of the four edges of the nail bed board 1. Their structure, which is higher than that of the support pins 4, can limit the edge of the PCB board and prevent the PCB board from shifting laterally during the silkscreen process. The layout of the equally spaced linear array can uniformly constrain the edge of the board and avoid local stress concentration that could lead to board deformation. Together with the bottom support of the support pins 4, the PCB board is fixed with "bottom support + edge limiting", which improves the alignment accuracy of the silkscreen.

[0027] In one optional embodiment, a right-angle bracket 3 is fixedly connected to the top of the nail bed board 1, and the right-angle bracket 3 is perpendicular to the side limiting nails 2 at both ends.

[0028] The right-angle bracket 3 and the side limiting pin 2 are perpendicularly matched to form a right-angle positioning reference, which can quickly calibrate the placement angle of the PCB board and avoid silkscreen printing errors caused by board misalignment. During assembly, the positioning can be completed simply by attaching the PCB board to the bracket and the side limiting pin. The operation is simple and efficient.

[0029] In one alternative embodiment, the hexagonal nail holder 9 is hexagonal, and an elastic pad 10 is attached to the bottom end of the hexagonal nail holder 9. The outer wall of the elastic pad 10 is movably connected to the split inner frame 8.

[0030] The hexagonal structure of the hexagonal nail holder 9 is fitted with the hexagonal inner contact surface of the split inner frame 8 to prevent the rotation of the support nail 4. Together with the elastic pad 10 at the bottom, it can buffer the alternating impact force of the screen printing squeegee and reduce the risk of the support nail 4 loosening.

[0031] It should be noted that the elastic pad 10 can be replaced with different hardness specifications as needed. Replacing the pad with a high-hardness pad locally can strengthen the support of the corresponding area, adapting to the different support needs of thin plates and warped plates. Moreover, the pad is nested in the split inner frame 8, and can be removed and placed simultaneously with the split inner frame during disassembly and assembly, making the operation convenient.

[0032] In one optional implementation, several sets of split inner frames 8 are fitted together, the total area of ​​the split inner frames 8 is the same as the internal area of ​​the main inner frame 7, and the top of the split inner frames 8 is fitted with the axial limiting plate 5.

[0033] The split inner frames 8 fit together and their total area matches the internal area of ​​the main inner frame 7, completely filling the space of the main inner frame 7 and ensuring that the support nails 4 have no blind spots. Their tops fit into the axial limiting plate 5, which can assist in the stable installation of the limiting plate. At the same time, the split design allows for the individual replacement of some parts of the inner frame. For high-stress areas of the PCB board, the thickened, high-rigidity split inner frames 8 can be replaced to enhance the local support effect. The assembly operation is flexible and adaptable to the rapid changeover needs of various types of PCB boards.

[0034] 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 solder resist wire-printed nail bed, characterized in that, include: The nail bed board (1) has several sets of nail holes inside, and the nail holes are arranged in a linear array. The nail holes are movably fitted with support nails (4). The bottom end of the support nails (4) is fixedly connected to a hexagonal nail seat (9). The outer wall of the hexagonal nail seat (9) is movably fitted with a split inner frame (8). The outer wall of the split inner frame (8) is movably fitted with a main inner frame (7). The outer wall of the main inner frame (7) is movably fitted with the nail bed board (1).

2. The solder resist wire stamping bed according to claim 1, characterized in that, The nail bed board (1) and the main inner frame (7) have several sets of socket holes inside. The inner wall of the socket hole is movably fitted with an axial limiting plate (5). The bottom end of the axial limiting plate (5) is in contact with the hexagonal nail seat (9).

3. The solder resist wire stamping bed according to claim 2, characterized in that, A connecting plate (6) is fixedly connected to the front of several sets of axial limiting plates (5), and the outer wall of the connecting plate (6) is in contact with the nail bed board (1).

4. The solder resist wire stamping bed according to claim 1, characterized in that, The top of the nail bed board (1) is fixedly connected with several sets of side limiting nails (2). The side limiting nails (2) and the support nails (4) are arranged in a linear array with the same spacing. The top of the side limiting nails (2) is higher than the top of the support nails (4).

5. A solder resist wire stamping bed according to claim 1, characterized in that, The top of the nail bed board (1) is fixedly connected with a right angle bracket (3), which is perpendicular to the side limiting nails (2) at both ends.

6. A solder resist wire stamping bed according to claim 1, characterized in that, The hexagonal nail base (9) is hexagonal, and an elastic pad (10) is attached to the bottom end of the hexagonal nail base (9). The outer wall of the elastic pad (10) is movably connected to the split inner frame (8).

7. A solder resist wire stamping bed according to claim 1, characterized in that, Several sets of the split inner frames (8) are fitted together, the total area of ​​the split inner frames (8) is the same as the internal area of ​​the main inner frame (7), and the top of the split inner frames (8) is fitted with the axial limiting plate (5).

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