Adjustable fixture for fixing auxiliary circuit board

Abstract

The utility model relates to the technical field of circuit boards, and discloses an adjustable fixture for fixing an auxiliary circuit board, which comprises a main body frame, two groups of supporting plates arranged on two sides in the main body frame and an angle adjusting component connected with the main body frame, a height adjusting component assembled below the angle adjusting component, and a height adjusting component assembled below the height adjusting component. During angle adjustment, the second plug pins are pulled out to unlock the traction plate and the supporting rods, the rotary knobs are twisted to loosen the rotary shafts, the traction plate is driven to slide in the sliding grooves through the clamping seats, the inclination angle of the upper die base is adjusted, and the positioning plates and the supporting rods assist in guiding; after the mold is adjusted to a proper angle, a knob is screwed, a connecting rod I is pulled to insert a bolt II into a corresponding slot hole, and the angle is locked through clamping of the connecting rod and positioning of the bolt, so that the angle stability during working of the mold is ensured, and the machining requirements of different circuit boards are met.

Description

Technical Field

[0001] This utility model relates to the field of circuit board technology, specifically to an adjustable fixing auxiliary circuit board fixture. Background Technology

[0002] Circuit boards can be broadly classified into three categories based on the number of layers: single-sided boards, double-sided boards, and multilayer boards. First, single-sided boards are the most basic type, where components are concentrated on one side and conductors on the other. Because the conductors only appear on one side, this type of board is called a single-sided board. Single-sided boards are generally simple to manufacture and inexpensive, but their disadvantage is that they cannot be used for overly complex products. Double-sided boards are an extension of single-sided boards. When single-layer wiring cannot meet the needs of electronic products, double-sided boards are used. Both sides have copper cladding and traces, and vias can be used to connect the lines between the two layers, forming the required network connection. Multilayer boards are printed circuit boards with three or more conductive pattern layers laminated with insulating materials in between, and the conductive patterns are interconnected as required. Multilayer boards are a product of the development of electronic information technology towards high speed, multi-functionality, large capacity, small size, thinness, and lightweight.

[0003] Chinese patent CN218362590U discloses a circuit board fixing fixture, including a base with a first slot on the top. This utility model uses a rotating rod, a limiting block, and a support rod in combination. The height of the support rod can be adjusted according to the length of the circuit board, making it convenient to rotate the rotating rod to flip the circuit board. This facilitates the worker's inspection of which point on the back is connected to the component, improving the maintenance efficiency when the worker is soldering back and forth and then connecting the holes of the components on the back. This makes the circuit board fixing fixture more convenient and practical. With the combined use of a metal hose and a fan, when the worker is soldering the circuit board, twisting the metal hose will direct the fan towards the area to be soldered and blow away the fumes generated by the solder wire. This has a good protective effect on the worker's health. The odor of the solder wire fumes is somewhat irritating, and blowing away the fumes reduces the worker's discomfort.

[0004] However, the following shortcomings still exist:

[0005] Existing circuit board fixing fixtures have limitations in adjustability and cannot be dynamically adjusted according to the shape, angle, and height of the circuit board. This results in insufficient flexibility in adapting the fixture to different circuit boards, which directly affects the stability of welding processes such as wave soldering and reflow soldering, making it difficult to guarantee the accuracy and quality of solder joints. Therefore, those skilled in the art provide an adjustable fixing auxiliary circuit board fixture to solve the problems mentioned in the background art. Summary of the Invention

[0006] The purpose of this utility model is to provide an adjustable fixing auxiliary circuit board fixture to solve the problems mentioned in the background art above.

[0007] This utility model provides the following technical solution: an adjustable fixed auxiliary circuit board fixture, including a main frame, with a support plate on both sides of the main frame and an angle adjustment component connected to the main frame, the support plate being provided in two sets, and a height adjustment component being assembled below the angle adjustment component, the angle adjustment component and the height adjustment component being provided in four sets, and a positioning pin being fixed below the height adjustment component.

[0008] As a preferred embodiment of the above technical solution, the main frame is configured as a lower mold base and an upper mold base, with the upper mold base located above the lower mold base, and the top surfaces of both the lower mold base and the upper mold base having a hollow structure.

[0009] As a preferred embodiment of the above technical solution, a support plate is provided between the lower mold base and the upper mold base, and a pin is provided at each of the four ends of the bottom surface of the support plate. Insertion holes are provided at each of the four ends of the top surface of the lower mold base, and the positions of the insertion holes and the pins correspond to each other.

[0010] As a preferred embodiment of the above technical solution, the angle adjustment assembly includes a first fixed plate, a first connecting plate, a rotating shaft, a knob, a traction plate, a retaining seat, a second fixed plate, a slide groove, a positioning plate, a support rod, a slot, a second connecting plate, a first connecting rod, and a second pin. The first fixed plate is fixed to the bottom surface of the upper mold base. The first connecting plate is symmetrically connected to both sides of the bottom surface of the first fixed plate. Two sets of the first connecting plates are provided. The rotating shaft is connected between the two sets of the first connecting plates. The knob is movably installed in front of the first connecting plate and the rotating shaft. The traction plate is sleeved on both sides of the outside of the rotating shaft. The traction plate passes through the bottom... The card seat and the second fixing plate are connected. The card seat is in the shape of a semi-circular ring. The sliding groove is symmetrically opened on both sides of the top surface of the second fixing plate. The sliding groove is adapted to the card seat. The positioning plate is fixed between the first fixing plate and the second fixing plate. The support rod is fixed to the inner side wall of the positioning plate. The slot is opened in front of the support rod. Several slots are opened. The second connecting plate is connected to the front side of one side of the positioning plate. The first connecting rod is snapped into the middle of the second connecting plate. The second pin is located behind the first connecting rod. One end of the second pin penetrates the traction plate and the inside of the slot and extends into the inner wall of the support rod.

[0011] As a preferred embodiment of the above technical solution, the height adjustment assembly includes a sleeve, a telescopic rod, a through hole, a positioning pin, a protrusion, a connecting plate, a connecting rod, and a limiting plate. The sleeve is located on the bottom surface of the fixing plate, the telescopic rod is disposed on the inner wall of the sleeve, the through hole is opened on one side of the telescopic rod, and several through holes are provided. One end of the positioning pin penetrates the sleeve and extends into the inner wall of the through hole. The protrusion is symmetrically fixed on both sides of the telescopic rod and is distributed in a longitudinal array. The connecting plate is symmetrically connected to both sides of the inner wall of the sleeve. The connecting rod is engaged in the middle of the connecting plate. The limiting plate is disposed at one end of the connecting rod and is engaged between the protrusion.

[0012] As a preferred embodiment of the above technical solution, a second positioning pin is fixed on the bottom surface of the sleeve, and a pin hole is opened on the upper corresponding surface of the second positioning pin, the pin hole being opened on the top surface of the lower mold base.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. When adjusting the angle, first pull out the second pin to unlock the traction plate and the support rod, turn the knob to loosen the rotating shaft, and drive the traction plate to slide in the slide groove through the card seat. Adjust the tilt angle of the upper mold base. The positioning plate and the support rod assist in the guidance. After adjusting to the appropriate angle, tighten the knob and pull the first connecting rod to insert the second pin into the corresponding slot. The angle is locked by the connecting rod and the pin positioning, ensuring that the angle is stable when the mold is working and adapting to different circuit board processing requirements.

[0015] 2. When adjusting the height, the positioning pin is pulled out to unlock, and the telescopic rod slides in the sleeve. The protrusions on both sides push the limiting plate to swing. The connecting rod slides to achieve adjustment. After adjusting to the target height, the positioning pin is inserted and locked by the limiting plate. The force is transmitted through the sleeve and the telescopic rod to ensure height stability and adapt to the processing of circuit boards of different thicknesses. Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall three-dimensional structure of an adjustable fixed auxiliary circuit board fixture;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the lower mold base;

[0018] Figure 3 for Figure 1 A magnified structural diagram at point P;

[0019] Figure 4 for Figure 2 A magnified structural diagram at point C;

[0020] Figure 5 This is a schematic diagram of the internal cross-sectional structure of the height adjustment component;

[0021] Figure 6 for Figure 5 A magnified structural diagram at point A.

[0022] 1. Main frame; 101. Lower mold base; 102. Upper mold base; 2. Support plate; 21. Pin 1; 22. Insertion hole; 3. Angle adjustment assembly; 301. Fixing plate 1; 302. Connecting plate 1; 303. Rotating shaft; 304. Knob; 305. Traction plate; 306. Card seat; 307. Fixing plate 2; 308. Slide groove; 309. Positioning plate; 310. Support rod; 311. Slot hole; 312. Connecting plate 2; 313. Connecting rod 1; 314. Pin 2; 4. Height adjustment assembly; 401. Sleeve; 402. Telescopic rod; 403. Through hole; 404. Positioning pin 1; 405. Protrusion; 406. Connecting plate 3; 407. Connecting rod 2; 408. Limiting plate; 5. Positioning pin 2; 51. Pin hole. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0024] Please see Figures 1-6 As shown, this utility model provides a technical solution: an adjustable fixed auxiliary circuit board fixture, including a main frame 1, with a support plate 2 on both sides inside the main frame 1 and an angle adjustment component 3 connected to the main frame 1, the support plate 2 is provided in two sets, and a height adjustment component 4 is assembled below the angle adjustment component 3, both the angle adjustment component 3 and the height adjustment component 4 are provided in four sets, and a positioning pin 2 5 is fixed below the height adjustment component 4.

[0025] As one implementation method in this embodiment, please refer to Figure 1 As shown, a support plate 2 is provided between the lower mold base 101 and the upper mold base 102. The bottom surface of the support plate 2 is provided with four pins 21. The top surface of the lower mold base 101 is provided with four holes 22. The positions of the holes 22 and the pins 21 are corresponding.

[0026] Furthermore, by aligning and inserting the pin 21 on the bottom surface of the support plate 2 with the insertion hole 22 on the top surface of the lower mold base 101, a reliable connection between the support plate 2 and the lower mold base 101 is achieved through their matching. When the mold is working, the upper mold base 102 moves downward, and the force is transmitted to the support plate 2 through the mold components. The support plate 2, relying on the connection between the pin 21 and the insertion hole 22, stably receives and transmits the force, which not only ensures the relative position accuracy of the upper and lower molds after mold assembly, making the mold movement precise and stable, avoiding misalignment from affecting the product molding quality, but also helps to maintain the overall structural stability of the mold, extend the mold life, and at the same time undertake the function of supporting the circuit board, ensuring overall rigidity.

[0027] As one implementation method in this embodiment, please refer to Figures 2-4 As shown, the angle adjustment assembly 3 includes a first fixing plate 301, a first connecting plate 302, a rotating shaft 303, a knob 304, a traction plate 305, a bracket 306, a second fixing plate 307, a slide groove 308, a positioning plate 309, a support rod 310, a slot 311, a second connecting plate 312, a first connecting rod 313, and a second pin 314. The first fixing plate 301 is fixed to the bottom surface of the upper mold base 102. The first connecting plate 302 is symmetrically connected to both sides of the bottom surface of the first fixing plate 301. Two sets of the first connecting plates 302 are provided. The rotating shaft 303 is connected between the two sets of the first connecting plates 302. The knob 304 is movably installed in front of the first connecting plate 302 and the rotating shaft 303. The traction plate 305 is sleeved on both sides of the outside of the rotating shaft 303. The traction plate 305 is connected to the outside of the rotating shaft 303. The card holder 306 and the second fixing plate 307 are connected through the bottom surface. The card holder 306 is in the shape of a semi-circular ring. The sliding groove 308 is symmetrically opened on both sides of the top surface of the second fixing plate 307. The sliding groove 308 is adapted to the card holder 306. The positioning plate 309 is fixed between the first fixing plate 301 and the second fixing plate 307. The support rod 310 is fixed to the inner side wall of the positioning plate 309. The slot 311 is opened in front of the support rod 310. Several slots are opened in the slot 311. The second connecting plate 312 is connected to the front side of the positioning plate 309. The first connecting rod 313 is engaged in the middle of the second connecting plate 312. The second pin 314 is located behind the first connecting rod 313. One end of the second pin 314 penetrates the traction plate 305 and the inside of the slot 311, and extends into the inner wall of the support rod 310.

[0028] Furthermore, when adjusting the angle, first pull out the second pin 314 to release its lock on the traction plate 305 and the support rod 310. Then, turn the knob 304 to loosen it, allowing the rotating shaft 303 to rotate freely. When the rotating shaft 303 rotates, it drives the traction plates 305 on both sides to move synchronously. Because the semi-circular ring seat 306 at the bottom of the traction plate 305 is compatible with the slide groove 308 of the second fixing plate 307, the traction plate 305 slides in the slide groove 308 with the help of the seat 306, changing the tilt angle of the upper mold base 102. The positioning plate 309 and the support rod 310 provide auxiliary support and guidance to ensure stable adjustment. After the angle is set, tighten the knob 304 to initially limit the position, then pull the connecting rod 313 to re-insert the pin 314 into the traction plate 305 and the corresponding slot 311. By using the cooperation of the connecting rod 313 engaging the connecting plate 312 and the pin 314 entering the slot 311, the movement of the traction plate 305 is restricted, and the angle is locked. This ensures that the angle adjustment component 3 can stably maintain the set angle when the mold is working, guaranteeing processing accuracy and stability, adapting to the processing needs of circuit boards of different shapes and angles, helping the mold to complete stamping, forming and other operations, and improving the adaptability of diversified production.

[0029] As one implementation method in this embodiment, please refer to Figures 4-6As shown, the height adjustment assembly 4 includes a sleeve 401, a telescopic rod 402, a through hole 403, a positioning pin 404, a protrusion 405, a connecting plate 406, a connecting rod 407, and a limiting plate 408. The sleeve 401 is located on the bottom surface of the fixing plate 307. The telescopic rod 402 is disposed on the inner wall of the sleeve 401. The through hole 403 is opened on one side of the telescopic rod 402, and there are several through holes 403. One end of the positioning pin 404 penetrates the sleeve 401 and extends into the inner wall of the through hole 403. The protrusion 405 is symmetrically fixed on both sides of the telescopic rod 402 and is distributed in a longitudinal array. The connecting plate 406 is symmetrically connected to both sides of the inner wall of the sleeve 401. The connecting rod 407 is engaged in the middle of the connecting plate 406. The limiting plate 408 is disposed at one end of the connecting rod 407, and the limiting plate 408 is engaged with the protrusion 405.

[0030] Furthermore, when adjusting the height, first pull out the positioning pin 404 to unlock the telescopic rod 402, allowing it to slide up and down within the sleeve 401. Because the longitudinally arrayed protrusions 405 on both sides of the telescopic rod 402 cooperate with the limiting plate 408 engaged with the connecting rod 407, when the telescopic rod 402 is pulled, the protrusions 405 push the limiting plate 408 to swing, and the connecting rod 407 slides in the connecting plate 406, achieving smooth telescopic adjustment. After adjusting to the target height, insert the positioning pin 404 into the corresponding through hole 403 to restrict axial movement. Simultaneously, the limiting plate 408, under the action of the connecting rod 407, clamps the adjacent protrusions 405. The double locking of the positioning pin 404 and the protrusions 405 prevents movement. When the mold is working, the force is transmitted to the sleeve 401 via the fixing plate 307 and received and transmitted by the telescopic rod 402. The double locking structure ensures height stability, guarantees the contact accuracy between the mold and the workpiece, and adapts to the processing requirements of circuit boards of different thicknesses.

[0031] Working principle: Insert the bottom pin 21 of the support plate 2 into the top hole 22 of the lower mold base 101 to achieve connection. When the mold is working, the upper mold base 102 moves downward to transmit force to the support plate 2. The support plate 2 is stably supported by the connection between the pin 21 and the hole 22, ensuring the positional accuracy and movement stability of the upper and lower molds, avoiding misalignment that affects product quality, maintaining the stability of the mold structure, extending its service life, and ensuring the overall rigidity of the circuit board. When adjusting the angle, pull out the second pin 314 to unlock, loosen the knob 304 to rotate the shaft 303, and drive the traction plate 305 to slide in the slide groove 308 through the card seat 306 to adjust the tilt angle of the upper mold base 102. The positioning plate 309 and the support rod 310 assist in the guidance. After adjusting to the appropriate angle, tighten the knob 304 and pull the connecting rod 313 to insert the second pin 314 into the corresponding slot 311 to lock, ensuring the stability of the mold angle during operation and adaptability. To meet the requirements of PCB processing, when adjusting the height, pull out the positioning pin 404 to unlock the telescopic rod 402. The limit plate 408 is pushed by the protrusion 405 to cooperate with the connecting rod 407 to achieve sliding adjustment. After the height is determined, insert the positioning pin 404 and lock the protrusion 405 for double locking. The force is transmitted through the sleeve 401 and the telescopic rod 402 to ensure height stability and adapt to the processing of PCBs of different thicknesses. When installing and fixing the upper mold base 102 and the lower mold base 101, align the positioning pin 5 on the bottom surface of the upper mold base 102 with the pin hole 51 on the top surface of the lower mold base 101 and insert it. The two work together to achieve precise positioning. The cylindrical surface of the positioning pin 5 fits against the inner wall of the pin hole 51, limiting the horizontal displacement of the sleeve 401 and ensuring that the relative position of the height adjustment component 4 and the lower mold base 101 is fixed, avoiding mold assembly errors caused by installation position deviations, which would affect the PCB processing accuracy.

[0032] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. An adjustable fixture for fixing auxiliary circuit boards, comprising a main frame (1), characterized in that: The main frame (1) has a tray (2) on both sides inside and an angle adjustment component (3) connected to the main frame (1). The tray (2) has two sets. The angle adjustment component (3) is equipped with a height adjustment component (4) below it. The angle adjustment component (3) and the height adjustment component (4) each have four sets. The height adjustment component (4) is fixed with a positioning pin (5) below it.

2. The adjustable fixed auxiliary circuit board fixture according to claim 1, characterized in that: The main frame (1) is configured as a lower mold base (101) and an upper mold base (102). The upper mold base (102) is located above the lower mold base (101). The top surfaces of both the lower mold base (101) and the upper mold base (102) are hollow structures.

3. The adjustable fixed auxiliary circuit board fixture according to claim 2, characterized in that: A support plate (2) is provided between the lower mold base (101) and the upper mold base (102). A pin 1 (21) is provided at the four ends of the bottom surface of the support plate (2). An insertion hole (22) is provided at the four ends of the top surface of the lower mold base (101). The positions of the insertion hole (22) and the pin 1 (21) are corresponding.

4. The adjustable fixing auxiliary circuit board fixture according to claim 1, characterized in that: The angle adjustment assembly (3) includes a first fixing plate (301), a first connecting plate (302), a rotating shaft (303), a knob (304), a traction plate (305), a card seat (306), a second fixing plate (307), a slide groove (308), a positioning plate (309), a support rod (310), a slot (311), a second connecting plate (312), a first connecting rod (313), and a second pin (314). The first fixing plate (301) is fixed to the upper mold base (1). 02) The bottom surface of the connecting plate one (302) is symmetrically connected to both sides of the bottom surface of the fixing plate one (301). The connecting plate one (302) is provided in two sets. The rotating shaft (303) is connected between the two sets of the connecting plate one (302). The knob (304) is movably installed in front of the connecting plate one (302) and the rotating shaft (303). The traction plate (305) is sleeved on both sides of the outside of the rotating shaft (303). The traction plate (305) passes through The bottom mounting base (306) is connected to the second fixing plate (307). The mounting base (306) is semi-circular in shape. The sliding grooves (308) are symmetrically opened on both sides of the top surface of the second fixing plate (307). The sliding grooves (308) are adapted to the mounting base (306). The positioning plate (309) is fixed between the first fixing plate (301) and the second fixing plate (307). The support rod (310) is fixed to the inner side wall of the positioning plate (309). The slot (310) 1) The slot (311) is opened in front of the support rod (310). The second connecting plate (312) is connected to the front side of the positioning plate (309). The first connecting rod (313) is snapped into the middle of the second connecting plate (312). The second pin (314) is located behind the first connecting rod (313). One end of the second pin (314) penetrates the traction plate (305) and the inside of the slot (311) and extends into the inner wall of the support rod (310).

5. The adjustable fixing auxiliary circuit board fixture according to claim 1, characterized in that: The height adjustment assembly (4) includes a sleeve (401), a telescopic rod (402), a through hole (403), a positioning pin (404), a protrusion (405), a connecting plate (406), a connecting rod (407), and a limiting plate (408). The sleeve (401) is located on the bottom surface of the fixing plate (307). The telescopic rod (402) is disposed on the inner wall of the sleeve (401). The through hole (403) is opened on one side of the telescopic rod (402). Several through holes (403) are provided. The positioning pin... One end of pin 1 (404) penetrates the sleeve (401) and extends into the inner wall of the through hole (403). The protrusions (405) are symmetrically fixed on both sides of the telescopic rod (402). The protrusions (405) are arranged in a longitudinal array. The connecting plate 3 (406) is symmetrically connected to both sides of the inner wall of the sleeve (401). The connecting rod 2 (407) is snapped into the middle of the connecting plate 3 (406). The limiting plate (408) is set at one end of the connecting rod 2 (407). The limiting plate (408) is between the protrusions (405) and the pin.

6. The adjustable fixing auxiliary circuit board fixture according to claim 5, characterized in that: The bottom surface of the sleeve (401) is fixed with a positioning pin 2 (5), and a pin hole (51) is opened on the upper corresponding surface of the positioning pin 2 (5). The pin hole (51) is opened on the top surface of the lower mold base (101).

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