Printed circuit board assembly (PCBA) printing and pasting integrated clamp
By designing a three-point positioning system for flexible PCBA boards, consisting of a positioning tray, a mounting fixture, and a platen clamp, the problems of applicability of existing fixtures and non-reusable tapes were solved, achieving multi-size adaptability and efficient production.
Patent Information
- Application Number
- CN202520272804.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-20
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2035-02-20
AI Technical Summary
When printing and mounting on existing flexible PCBA boards, the fixtures used are mostly manufactured as a single piece, which cannot adapt to various sizes and specifications. Furthermore, the tape cannot be reused, which may leave residue, affecting production efficiency and product quality.
A flexible PCBA board printing and placement integrated fixture was designed, which includes a positioning tray, a placement jig, adjustable positioning pins, and a clamping plate. The fixture adapts to various sizes and specifications through a three-point positioning system and adjustable positioning pins, and provides stable clamping with the clamping plate, avoiding the use of tape.
It enables precise positioning of flexible PCBA boards of various sizes, improves production efficiency and product quality, ensures processing stability and precision, avoids damage to the boards, and has an economical and environmentally friendly clamping method.
Smart Images
Figure CN223626081U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of PCBA board printing and patching technology, and in particular relates to an integrated fixture for flexible PCBA board printing and patching. Background Technology
[0002] The entire process of manufacturing a PCB (Printed Circuit Board Assembly) involves a bare PCB undergoing surface mount technology (SMT) or DIP (Dual In-line Package) component insertion. The design of a printed circuit board is based on an electronic circuit diagram to achieve the functions required by the user. When printing and mounting flexible PCBA boards, the fixtures used are typically manufactured as a single unit. These fixtures have three fixed positioning pins to position the flexible PCBA board, but this method is only suitable for single flexible PCBA boards. Adhesive tape is then used to attach the flexible PCBA board to the fixture; however, this tape is not reusable and may leave residue on the fixture. To address these technical problems, this application provides an integrated fixture for printing and mounting flexible PCBA boards. Utility Model Content
[0003] The purpose of this utility model is to provide an integrated fixture for printing and mounting flexible PCBA boards. By combining a positioning tray, a mounting fixture, an adjustable positioning pin, and a pressure plater, it can be used for flexible PCBA boards of various sizes and specifications. The pressure plater is stable and repeatable in use.
[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:
[0005] This utility model relates to an integrated fixture for printing and mounting flexible PCBA boards, comprising a positioning tray, a mounting fixture, adjustable positioning pins, and a pressure plate. A first fixing pin is fixed at each of the four corners of the top surface of the positioning tray. A rectangular groove is formed on the top surface of the positioning tray. Two T-shaped channels are formed between the bottom surface of the positioning tray and the bottom surface of the rectangular groove, the two T-shaped channels being perpendicular to each other, and an adjustable positioning pin is installed on each of the two T-shaped channels. A second fixing pin is fixed at the intersection of the center lines of the two T-shaped channels along their length on the bottom surface of the rectangular groove. The mounting fixture has a rectangular plate structure, with a first positioning hole at each of its four corners that mates with the first fixing pin. A second positioning hole is formed on the mounting fixture that mates with the second fixing pin. Two vertically arranged first elongated circular holes are formed on the mounting fixture. The two adjustable positioning pins pass through one of the first elongated circular holes. Several mounting holes for mounting the pressure plate are formed on the mounting fixture.
[0006] As a preferred embodiment of this utility model, the positioning tray is a frustum structure with a larger top and a smaller bottom; when the patch fixture is installed on the positioning tray, all four sides of the patch fixture are placed outside the positioning tray.
[0007] As a preferred embodiment of this utility model, a rubber pad is fixed to the bottom surface of the positioning tray.
[0008] As a preferred embodiment of this utility model, the adjustable positioning pin includes a T-bolt and a movable pin cap that are threadedly connected; the T-bolt is installed on the T-slot; the movable pin cap includes a hexagonal nut that is threadedly connected to the T-bolt; a coaxially arranged round tube is fixed on the hexagonal nut, and a hemispherical end is provided at the upper end of the round tube; the outer diameter of the round tube is the same as the outer diameter of the second fixing pin.
[0009] As a preferred embodiment of this utility model, the pressure plate includes an oval block; the upper end face of the oval block has a beveled edge; a coaxially arranged cylinder is fixed on the upper surface of the oval block; a steel sheet is fixed on the upper end of the cylinder; and a partition plate arranged radially is fixed on the inner wall of the cylinder.
[0010] As a preferred embodiment of the present invention, the mounting hole includes a circular groove formed on the bottom surface of the patch fixture; the top surface of the circular groove is provided with an oblong through hole that mates with the oblong block.
[0011] This utility model has the following beneficial effects:
[0012] 1. This utility model, by setting a second fixing pin on the positioning tray and using an adjustable positioning pin, combined with a patch fixture, constitutes a three-point positioning system. This design allows the fixture to adapt to flexible PCBA boards of various sizes, achieving precise positioning and improving production efficiency and product quality.
[0013] 2. This utility model combines the design of the pressure plate with the mounting fixture to facilitate the use of steel plates to clamp and position the four edges of the flexible PCBA board. It also takes into account the ease of operation, such as the sloping design of the oval block to facilitate rotation and installation, and the rotation mechanism of the steel plate to simplify the clamping process.
[0014] 3. The positioning tray of this utility model adopts a four-sided frustum structure with a larger top and a smaller bottom, which facilitates the placement and removal of the mounting fixture. At the same time, a rubber pad is fixed on the bottom surface, which improves the stability of the fixture during placement, reduces shaking and displacement during operation, and ensures stability when installing flexible PCBA boards.
[0015] 4. The oval block and steel plate design of this utility model's clamping device effectively holds the flexible PCBA board, preventing it from moving or deforming during processing, thus ensuring processing accuracy and product quality. At the same time, this clamping method also avoids damage to the flexible PCBA board. The clamping device is reusable, making it more economical and environmentally friendly than using tape to fix the flexible PCBA board.
[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the integrated printing and patching fixture for flexible PCBA boards according to this utility model.
[0019] Figure 2 for Figure 1 The front view.
[0020] Figure 3 for Figure 1 A structural decomposition diagram.
[0021] Figure 4 This is a structural diagram of a positioning tray.
[0022] Figure 5 This is a schematic diagram of the patch fixture.
[0023] Figure 6 This is a schematic diagram of a T-bolt.
[0024] Figure 7 This is a structural diagram of the active cap.
[0025] Figure 8 This is a schematic diagram of the pressure plate device.
[0026] The attached diagram lists the components represented by each number as follows:
[0027] 1-Positioning tray, 2-Patch fixture, 3-Adjustable positioning pin, 4-Pressure plate, 11-First fixing pin, 12-Rectangular groove, 13-T-slot, 14-Second fixing pin, 15-Rubber pad, 21-First positioning hole, 22-Second positioning hole, 23-First elongated hole, 24-Mounting hole, 241-Round groove, 242-Oval through hole, 31-T-bolt, 32-Modible pin cap, 321-Hex nut, 322-Round tube, 41-Oval block, 42-Slope, 43-Cylinder, 44-Steel sheet, 45-Partition plate. Detailed Implementation
[0028] 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 scope of protection of the present utility model. Specific Implementation Example 1:
[0030] Please see Figure 1-8 As shown, this utility model is an integrated fixture for flexible PCBA board printing and surface mount technology (SMT), including a positioning tray 1, a surface mount fixture 2, adjustable positioning pins 3, and a pressure plate 4. A first fixing pin 11 is fixed at each of the four corners of the top surface of the positioning tray 1. A rectangular groove 12 is formed on the top surface of the positioning tray 1. Two T-shaped channels 13 are formed between the bottom surface of the positioning tray 1 and the bottom surface of the rectangular groove 12, and the two T-shaped channels 13 are perpendicularly arranged, with an adjustable positioning pin 3 installed on each of the two T-shaped channels 13. A second fixing pin 14 is fixed at the intersection of the center lines of the two T-shaped channels 13 along their length on the bottom surface of the rectangular groove 12. The surface mount fixture 2 has a rectangular plate structure, with a first positioning hole 21 at each of the four corners that mates with the first fixing pin 11. A second positioning hole 22 is formed on the surface mount fixture 2 that mates with the second fixing pin 14. Two vertically arranged first elongated circular holes 23 are formed on the surface mount fixture 2. Two adjustable positioning pins 3 pass through one of the first elongated circular holes 23. The patch fixture 2 has several mounting holes 24 for mounting the pressure plate 4.
[0031] To facilitate the placement and removal of the surface mount fixture 2 on the positioning tray 1, the positioning tray 1 is designed as a frustum structure, wider at the top and narrower at the bottom. When the surface mount fixture 2 is mounted on the positioning tray 1, all four sides of the fixture 2 are positioned outside the tray 1. The external dimensions of the surface mount fixture 2 are larger than those of the positioning tray 1, and the frustum structure of the positioning tray 1 facilitates the placement and removal of the surface mount fixture 2. To ensure stability when the positioning tray 1 is placed on the workbench, a rubber pad 15 is fixed to the bottom surface of the positioning tray 1. The rubber pad 15 increases relative frictional resistance, ensuring stability during the installation of flexible PCBA boards.
[0032] The adjustable positioning pin 3 includes a T-bolt 31 with a threaded connection and a movable pin cap 32. The T-bolt 31 is installed on the T-slot 13. The movable pin cap 32 includes a hexagonal nut 321 that is threadedly connected to the T-bolt 31. When the T-bolt 31 and the hexagonal nut 321 are fully and tightly fixed on the positioning tray 1, the hexagonal nut 321 is completely placed within the rectangular groove 12. A coaxially arranged circular tube 322 is fixed on the hexagonal nut 321, and the upper end of the circular tube 322 is provided with a hemispherical end. The outer diameter of the circular tube 322 is the same as the outer diameter of the second fixing pin 14. The second fixing pin 14 fixed on the positioning tray 1 and the adjustable positioning pin 3 installed on the two T-slots 13 constitute an adjustable three-point positioning pin group. The positioning tray 1, together with the mounting fixture 2, can be used for precise mounting positioning of flexible PCBA boards of various sizes.
[0033] The pressure plater 4 includes an oblong block 41. The upper end face of the oblong block 41 has a beveled edge 42. A coaxially arranged cylinder 43 is fixed to the upper surface of the oblong block 41. A steel sheet 44 is fixed to the upper end of the cylinder 43. A partition 45 arranged radially is fixed to the inner wall of the cylinder 43. The mounting hole 24 includes a circular groove 241 formed on the bottom surface of the mounting fixture 2. The top surface of the circular groove 241 has an oblong through hole 242 that mates with the oblong block 41. When the top surface of the oblong block 41 is in contact with the inner top surface of the circular groove 241, the distance between the steel sheet 44 and the upper surface of the mounting fixture 2 is no greater than the thickness of the flexible PCBA board. The beveled edge 42 at the upper end of the oblong block 41 facilitates the rotational installation of the pressure plater 4. Figure 5 As shown, the mounting holes 24 include two rows arranged along the direction of the two first circular elongated holes 23, and two rows arranged at a 45° angle to the first circular elongated holes 23. One or more pressure plates 4 are installed on the four rows of mounting holes 24 respectively to clamp the four edges of the flexible PCBA board, ensuring the stability of the flexible PCBA board attached to the surface of the mounting fixture 2.
[0034] When installing the pressure plater 4, the oblong block 41 of the pressure plater 4 is inserted into and passes through the oblong through hole 242 in the suitable mounting hole 24. Tweezers are inserted into the cylinder 43 to rotate the pressure plater 4, while simultaneously gripping the steel sheet 44. During rotation, the steel sheet 44 rotates above the flexible PCBA board. Releasing the tweezers holding the steel sheet 44 effectively clamps the flexible PCBA board.
[0035] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0036] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A flexible PCBA board printing and patching integrated fixture, characterized in that: It includes a positioning tray (1), a patch fixture (2), an adjustable positioning pin (3), and a pressure plate (4); A first fixing pin (11) is fixed at each of the four corners of the top surface of the positioning tray (1); a rectangular groove (12) is provided on the top surface of the positioning tray (1); two T-shaped channels (13) are provided between the bottom surface of the positioning tray (1) and the bottom surface of the rectangular groove (12), the two T-shaped channels (13) are arranged perpendicularly to each other, and an adjustable positioning pin (3) is installed on each of the two T-shaped channels (13); a second fixing pin (14) is fixed at the intersection of the center lines of the two T-shaped channels (13) along their length direction on the bottom surface of the rectangular groove (12). The patch fixture (2) is a rectangular plate structure. A first positioning hole (21) is opened at each of the four corners of the patch fixture (2) to cooperate with the first fixing pin (11); a second positioning hole (22) is opened on the patch fixture (2) to cooperate with the second fixing pin (14); two vertically arranged first elongated holes (23) are opened on the patch fixture (2); and two adjustable positioning pins (3) pass through one of the first elongated holes (23) respectively. The patch fixture (2) has several mounting holes (24) for mounting the pressure plate (4).
2. The flexible PCBA board printing and patching integrated fixture according to claim 1, characterized in that, The positioning tray (1) is a truncated pyramid structure with a larger top and a smaller bottom; when the patch fixture (2) is installed on the positioning tray (1), all four sides of the patch fixture (2) are placed outside the positioning tray (1).
3. The flexible PCBA board printing and patching integrated fixture according to claim 2, characterized in that, A rubber pad (15) is fixed to the bottom surface of the positioning tray (1).
4. The flexible PCBA board printing and patching integrated fixture according to claim 1, characterized in that, The adjustable positioning pin (3) includes a T-bolt (31) and a movable pin cap (32) that are threaded together; the T-bolt (31) is installed on the T-slot (13); the movable pin cap (32) includes a hexagonal nut (321) that is threaded together with the T-bolt (31); a coaxially arranged round tube (322) is fixed on the hexagonal nut (321), and the upper end of the round tube (322) is provided with a hemispherical end; the outer diameter of the round tube (322) is the same as the outer diameter of the second fixing pin (14).
5. The flexible PCBA board printing and patching integrated fixture according to claim 1, characterized in that, The pressure plate (4) includes an oval block (41); the upper end face of the oval block (41) is provided with a bevel (42); a cylinder (43) is fixed on the upper surface of the oval block (41); a steel sheet (44) is fixed at the upper end of the cylinder (43); and a partition (45) is fixed on the inner wall of the cylinder (43) along its radial direction.
6. The flexible PCBA board printing and patching integrated fixture according to claim 5, characterized in that, The mounting hole (24) includes a circular groove (241) formed on the bottom surface of the patch fixture (2); the top surface of the circular groove (241) is provided with an oblong through hole (242) that mates with the oblong block (41).