FPC (Flexible Printed Circuit) board loading platform

Abstract

The utility model provides an FPC circuit board loading platform, and belongs to the technical field of circuit boards. Comprising two main boards; the number of the increasing and decreasing blocks is multiple, the increasing and decreasing blocks are arranged between the two main plates, the adjacent increasing and decreasing blocks and the main plates are provided with splicing blocks and splicing grooves, the splicing blocks are matched with the splicing grooves, and the splicing blocks and the splicing grooves are used for splicing of the adjacent main plates and the increasing and decreasing blocks and splicing of the increasing and decreasing blocks. The upper surface of the increasing and decreasing block is flush with the upper surface of the main plate. According to the utility model, through the cooperation of the splicing blocks and the splicing grooves between the mainboard and the increasing and decreasing blocks, the width and the length of the platform can be flexibly adjusted according to FPC circuit boards of different sizes, and through the cooperation of the springs between the pressing plates and the sliding blocks, the elastic pieces in the pressing plates, the flexible sheets on the mainboard and the adjustment and control bolts and the threaded cylinders, the adjustment and control efficiency is improved. The purpose of effectively avoiding the physical damage of the FPC circuit board is achieved.

Description

Technical Field

[0001] This utility model relates to the field of circuit board technology, and in particular to an FPC circuit board mounting platform. Background Technology

[0002] Flexible printed circuit boards (FPCs), which use polyimide or polyester film as substrates, are widely used in modern electronic devices due to their high wiring density, light weight, thinness and good flexibility. They play a key role in fields such as smartphones, tablets, automotive electronics and medical devices, and have powerfully promoted the miniaturization, lightweighting and multifunctionality of electronic devices.

[0003] With the increasing demand for FPC circuit boards and technological iterations, the processing requirements are becoming increasingly stringent. As a core piece of processing equipment, the board mounting platform must securely hold the circuit boards to ensure processing accuracy and quality. However, traditional board mounting platforms are mostly of fixed size or have a narrow range of size adjustment, making it difficult to adapt to the processing needs of FPC circuit boards of different sizes. In the context of multi-variety, small-batch production, frequent replacement or modification of the platform is time-consuming, labor-intensive, and costly, which seriously restricts the improvement of production efficiency and enterprise development. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an FPC circuit board mounting platform, which solves the technical problems in the prior art that it is impossible to effectively fix FPC circuit boards of different sizes, and that the FPC circuit boards are easily physically damaged during the fixing process.

[0005] Technical Solution: To achieve the above objectives, this utility model provides the following technical solution: An FPC circuit board mounting platform, comprising: two main boards; and multiple add / remove blocks, with the multiple add / remove blocks positioned between two main boards. Adjacent add / remove blocks and main boards are provided with splicing blocks and splicing slots. The splicing blocks and splicing slots are adapted to each other, and are used for splicing adjacent main boards and add / remove blocks, as well as between add / remove blocks themselves. The upper surface of the add / remove blocks is flush with the upper surface of the main boards. The main boards are rectangular in shape with rounded corners to prevent sharp edges from causing accidental injury to operators. Their surfaces are finely polished. The surface roughness is controlled to an extremely low level through polishing to ensure a seamless fit when splicing with the add-on and subtractive blocks, reducing the impact of gaps on the overall structural stability. Inside the main board, a reinforcing rib structure can be reasonably set according to the results of mechanical analysis. The layout of the reinforcing ribs should follow the principle of uniform distribution and appropriate density. The shape of the add-on and subtractive blocks is adapted to the main board, and the edges are chamfered to prevent scratching other components or operators during installation and use. The shape design of the splicing blocks and splicing grooves should fully consider mechanical performance and processing technology. For example, a dovetail structure is adopted, and its angle and size are optimized to ensure sufficient friction and mechanical interlocking force during splicing to prevent loosening.

[0006] In a further embodiment, a limiting rod should be provided between the pressure plate and the slider to prevent the pressure plate from rotating. The shape of the pressure plate is generally designed according to the shape and size of the circuit board, and can be rectangular, circular or other special shapes. A protective frame is provided at the edge of the pressure plate. The height of the protective frame is determined according to the thickness of the circuit board and the processing requirements, generally between 5mm and 10mm, to prevent damage to the pressure plate or circuit board due to accidental collision during operation.

[0007] In a further embodiment, the conductive plate should be made of pure copper or copper alloy, and its thickness should be reasonably determined according to the size of the pressure plate and the required conductivity, generally between 1mm and 3mm; the connecting piece should be made of thin metal sheet, such as copper or aluminum sheet, with a thickness between 0.2mm and 0.5mm, and the connection method can be welding; the elastic element can be designed as columnar, sheet-like, or other shapes, selected according to the internal space and contact requirements of the pressure plate. Its elastic modulus should be within a certain range to ensure good elastic deformation capacity and provide sufficient support force, for example, an elastic modulus between 2MPa and 5MPa; the thickness of the flexible sheet is generally between 2mm and 5mm, and its area should be slightly larger than the contact area between the main board and the circuit board, with the excess generally between 5mm and 10mm to ensure complete coverage.

[0008] In another embodiment, the limiting plate is generally designed to be elongated or block-shaped, with its length matching the width of the adding or removing blocks, and the length tolerance controlled within ±0.5mm. The width is determined according to the required circuit board position accuracy, generally between 5mm and 15mm, and the width tolerance is controlled within ±0.2mm. The height of the limiting plate should be 2mm to 5mm higher than the thickness of the circuit board to ensure that the position of the circuit board can be effectively limited. The top edge of the limiting plate can be chamfered or rounded.

[0009] In a further embodiment, the spring type can be a cylindrical helical spring, and the wire diameter is determined according to the required force, generally between 1mm and 3mm. The outer diameter of the spring should be adapted to the space between the pressure plate and the slider, generally between 10mm and 20mm, with the outer diameter tolerance controlled within ±0.5mm.

[0010] In a further embodiment, the inner diameter tolerance of the sleeve should be controlled within ±0.05mm to ensure the fitting accuracy with the connecting rod; the diameter tolerance of the connecting rod should be controlled within ±0.03mm, and the width tolerance of the guide groove or guide key that mates with the sleeve should be controlled within ±0.02mm; the diameter of the rotating block is determined according to the ease of operation and ergonomic requirements, generally between 20mm and 40mm, with a diameter tolerance controlled within ±0.5mm. If a circular rotating block is used, a rubber anti-slip ring can be provided around its edge.

[0011] In a further embodiment, the spinning block and the rotating block can be manufactured using an integral molding process, such as by using a CNC machining center for overall milling, to ensure the stability and precision of the connection between the two; the material of the spinning block can be a high-hardness alloy steel, such as Cr12MoV or high-speed steel W18Cr4V; the mounting position of the protrusion in the pressure plate should be close to the central axis of the pressure plate, and it can be connected to the pressure plate by inlay or bonding, with an inlay depth between 5mm and 10mm, and a high-strength structural adhesive, such as acrylic structural adhesive, can be used to ensure a firm and reliable connection.

[0012] In a further embodiment, the limiting groove can be machined by milling or broaching. After machining, the inner surface of the groove needs to be polished to remove burrs and sharp edges and improve surface smoothness. The limiting block can be integrally formed with the connecting rod. If the connecting rod is manufactured by forging or machining, the limiting block is also machined at the same time to ensure the connection strength and accuracy of the two. If the connecting rod is manufactured separately and then assembled, the connection between the limiting block and the connecting rod can be welded or threaded.

[0013] In a further embodiment, the threaded cylinder can be made of high-strength brass or aluminum alloy, such as H62 brass or 6061 aluminum alloy. After machining, the internal thread is tapped with a tap of a precision grade not lower than H3 to ensure thread accuracy and surface quality. The threaded cylinder can be installed in the sleeve by interference fit or adhesive bonding. The adjusting bolt can be made of alloy steel, such as 45 steel or 40Cr. A bushing can be provided at the penetration point between the adjusting bolt and the rotating block. The bushing material can be bronze or graphite nylon, with an inner diameter tolerance controlled within ±0.03mm and an outer diameter tolerance controlled within ±0.05mm. This reduces friction between the adjusting bolt and the rotating block, improves rotational flexibility, and protects the rotating block from wear caused by the adjusting bolt.

[0014] Beneficial effects: 1. Through the cooperation of the splicing blocks and splicing slots between the main board and the add / remove blocks, the width and length of the platform can be flexibly adjusted according to FPC circuit boards of different sizes; the number of add / remove blocks can be increased or decreased as needed, and the tight fit between the splicing blocks and splicing slots ensures the structural stability, enabling the platform to accurately adapt to circuit boards of various sizes, thereby improving the equipment's compatibility with circuit boards of different sizes.

[0015] 2. By utilizing the spring between the pressure plate and the slider, the elastic element inside the pressure plate, the flexible sheet on the main board, and the coordination of the adjusting bolt and the threaded cylinder, the physical damage to the FPC circuit board is effectively avoided. The elastic element makes flexible contact with the circuit board, reducing contact stress through its adaptive deformation characteristics. At the same time, through its electrical connection with the conductive plate, static electricity is discharged while avoiding physical damage. The flexible sheet forms a soft support layer between the main board and the circuit board, effectively buffering the force from the bottom and preventing scratches and collisions to the bottom of the circuit board. The precise cooperation of the adjusting bolt and the threaded cylinder can accurately control the pressure of the pressure plate, avoiding damage to the circuit board due to improper pressure. This significantly reduces the risk of physical damage to the FPC circuit board caused by various mechanical stresses and static electricity factors during the fixing and processing stages. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the structure of the added / removed blocks.

[0019] Figure 3 This is a schematic diagram of the slider's structure.

[0020] Figure 4 This is a schematic diagram of the elastic element.

[0021] Figure 5 This is a schematic diagram of the spring structure.

[0022] Figure 6 This is a schematic diagram of the structure of the bump and the spinning block.

[0023] Figure 7 for Figure 5 A schematic diagram of the structure at point A.

[0024] The reference numerals in the figure are as follows: 1. Main board; 101. Slide groove; 102. Flexible sheet; 2. Adding / removing block; 201. Limiting plate; 3. Sliding block; 4. Pressure plate; 401. Protrusion; 5. Rotating block; 501. Spinning block; 502. Connecting rod; 503. Limiting block; 6. Conductive plate; 601. Connecting piece; 7. Elastic element; 8. Sleeve; 801. Limiting groove; 802. Threaded cylinder; 9. Adjusting bolt; 10. Spring. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in this utility model are described clearly and completely. Obviously, the described embodiments are only some, not all, of the embodiments in this utility model. All other embodiments obtained by those skilled in the art based on the embodiments in this utility model without creative effort are within the scope of protection of this utility model.

[0026] This application provides an FPC circuit board mounting platform, solving the technical problems in the prior art of effectively fixing FPC circuit boards of different sizes and easily causing physical damage to the FPC circuit boards during the fixing process. In practical use, it achieves the purpose of adapting and fixing FPC circuit boards of different sizes, and avoiding physical damage to the FPC circuit boards during fixing.

[0027] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0028] Reference Figure 1-7 An FPC circuit board mounting platform includes: two main boards 1; multiple add / remove blocks 2, with the multiple add / remove blocks 2 disposed between two main boards 1. Adjacent add / remove blocks 2 and main boards 1 are provided with splicing blocks and splicing slots. The splicing blocks and splicing slots are adapted to each other. The splicing blocks and splicing slots are used for splicing adjacent main boards 1 and add / remove blocks 2, as well as between add / remove blocks 2. The upper surface of the add / remove blocks 2 is flush with the upper surface of the main boards 1.

[0029] It achieves the effect of building a flexible and variable-size platform framework; by combining two main boards 1 and multiple add / remove blocks 2, and by using the matching connection of splicing blocks and splicing slots, the length and width of the platform can be easily adjusted so that it can accurately match FPC circuit boards of different sizes.

[0030] A slide groove 101 is provided on the main board 1; multiple sliders 3 are provided and are slidably disposed in the slide groove 101; multiple pressure plates 4 are provided and are disposed on multiple sliders 3; the slide groove 101 is used to limit the sliding trajectory of the sliders 3, and the pressure plates 4 are used to press down and fix the circuit board.

[0031] It achieves a precise, stable, and flexibly adjustable pressure fixation effect for FPC circuit boards; the slide groove 101 provides a precise sliding trajectory for the slider 3, and the slider 3 drives the pressure plate 4 to move smoothly. It can be quickly adjusted according to the specific position requirements of the circuit board to ensure that the pressure plate 4 can accurately reach the designated position to press down and fix the circuit board.

[0032] A conductive plate 6 is disposed within a pressure plate 4; a connecting piece 601 is connected at one end to the conductive plate 6 and at the other end to an external electrostatic discharge device; an elastic element 7 is disposed within the pressure plate 4 and is electrically connected to the conductive plate 6. The elastic element 7 is located on the side of the pressure plate 4 facing the circuit board and is used to fix the circuit board and guide the static electricity generated on the circuit board; a flexible sheet 102 is disposed on the main board 1 and is located on the side of the main board 1 that contacts the circuit board. The flexible sheet 102 is used for soft contact between the main board 1 and the circuit board.

[0033] It achieves all-round electrostatic protection and physical damage protection; the conductive plate 6, with the help of the connecting piece 601, safely conducts the static electricity that may be generated in the pressure plate 4 away, preventing the accumulation of static electricity from damaging the electronic components on the circuit board and ensuring the stability of the electrical performance of the circuit board.

[0034] A limiting plate 201 is disposed on the adding / removing block 2. The limiting plate 201 is located at one end of the adding / removing block 2 perpendicular to the slide groove 101, and the limiting plate 201 is higher than the upper surface of the adding / removing block 2. The limiting plate 201 is used to limit the position of the circuit board.

[0035] It achieves the effect of precise positioning of FPC circuit boards; the reasonable setting of the limiting plate 201 on the addition and subtraction block 2 precisely limits the position of the circuit board in the horizontal direction, so that it can be quickly positioned to the predetermined position when placed on the platform.

[0036] Multiple springs 10 are provided, and the multiple springs 10 are located between the pressure plate 4 and the slider 3. The springs 10 are used to reset the pressure plate 4.

[0037] The pressure plate 4 achieves automatic reset and pressure buffering; the spring 10 is located between the pressure plate 4 and the slider 3. After processing is completed, the spring 10 uses its own elastic restoring force to make the pressure plate 4 quickly return to the initial position, preparing for the next processing, thus improving the operating efficiency and automation of the equipment.

[0038] Sleeve 8 is rotatably connected to the side of slider 3 near pressure plate 4, and sleeve 8 is inside pressure plate 4; connecting rod 502 is slidably connected at one end inside sleeve 8 and the other end passes through pressure plate 4, and connecting rod 502 is adapted to sleeve 8; rotating block 5 is stably connected to the other end of connecting rod 502, and rotating block 5 is used to control the rotation of connecting rod 502.

[0039] This achieves the effect of rotating block 5 driving sleeve 8 to rotate via connecting rod 502.

[0040] The spinning block 501 is stably connected to the side of the rotating block 5 near the pressure plate 4; the protrusion 401 is disposed inside the pressure plate 4 and is in contact with the spinning block 501; the spinning block 501 is used to press down the protrusion 401 to control the pressure plate 4 to move downward.

[0041] This achieves the effect of fine adjustment and precise control of the pressure of the pressure plate 4; when the spinning block 501 rotates with the rotating block 5, it converts the rotational motion into a downward pressing action on the protrusion 401 inside the pressure plate 4 through contact with the protrusion 401, thereby precisely controlling the downward displacement and pressure of the pressure plate 4.

[0042] A limiting groove 801 is formed in the inner wall of the sleeve 8; a limiting block 503 is set on the connecting rod 502, and the limiting block 503 is slidably connected in the limiting groove 801 so that the connecting rod 502 drives the sleeve 8 to rotate.

[0043] This achieves the effect of stabilizing the movement relationship between the sleeve 8 and the connecting rod 502; the limiting groove 801 is slidably connected to the limiting block 503 on the connecting rod 502 on the inner wall of the sleeve 8, ensuring that the movement direction of the connecting rod 502 in the sleeve 8 is accurate and stable. While transmitting torque to make the sleeve 8 rotate, it effectively limits the axial and radial displacement of the connecting rod 502, preventing system failure or damage caused by uncontrolled movement of components.

[0044] A threaded cylinder 802 is installed inside a sleeve 8 and is fitted inside a connecting rod 502. An adjusting bolt 9 is installed inside the connecting rod 502. The adjusting bolt 9 is T-shaped. The smaller diameter end of the adjusting bolt 9 is threadedly connected to the threaded cylinder 802, and the larger diameter end passes through the rotating block 5. The adjusting bolt 9 is used to adjust the downward pressure of the pressure plate 4.

[0045] This system achieves wide-range, high-precision pressure control of the pressure plate 4. The threaded connection between the threaded cylinder 802 and the adjusting bolt 9 allows for a wide range of pressure adjustment by rotating the adjusting bolt 9 within the threaded cylinder 802, thus changing its position. Operators can easily and accurately set appropriate pressure values ​​for FPC circuit boards of different thicknesses, materials, and processing requirements, meeting diverse processing needs and improving the equipment's compatibility and adaptability to different types of circuit boards.

[0046] During use, firstly, based on the size of the FPC circuit board to be processed, the platform size is adjusted by flexibly adding or removing multiple add / remove blocks 2 between the two main boards 1. The splicing blocks and slots on adjacent main boards 1 and add / remove blocks 2 are tightly spliced ​​to ensure that the upper surface of the add / remove blocks 2 is flush with the upper surface of the main board 1, forming a stable and flat support base. Next, the circuit board is placed on the platform. The limiting plate 201, located at the end of the add / remove block 2 perpendicular to the slide groove 101 and higher than the upper surface, precisely limits the horizontal position of the circuit board, preventing it from shifting. Subsequently, according to processing requirements, the adjusting bolt 9 is adjusted to change the distance between the spinning block 501 and the slider 3, thereby rotating the rotating block 5 to drive the spinning block 501. When the slider 1 moves to the top of the protrusion 401, it achieves the function of adjusting the downward pressure of the pressure plate 4. During the fixing process, the spring 10 between the pressure plate 4 and the slider 3 will elastically deform according to the thickness and shape of the circuit board, evenly distributing the pressure and preventing excessive local pressure. The elastic element 7 inside the pressure plate 4 is in flexible contact with the circuit board, and the adaptive deformation further reduces the contact stress. The elastic element 7 is electrically connected to the conductive plate 6 inside the pressure plate 4, which can conduct the static electricity generated on the circuit board through the connecting piece 601. The flexible piece 102 on the main board 1 provides soft contact between the main board 1 and the circuit board, buffering the force from the bottom. After processing, the spring 10 uses its own elastic restoring force to reset the pressure plate 4 so that the next processing operation can be performed.

[0047] All the data mentioned above are example data, and the specific data should be selected according to the actual production needs; and the graphics shown in the attached drawings are example graphics, which are only intended to more intuitively show the key structure and connection relationship of the FPC circuit board mounting platform of this utility model; in practical applications, the appearance and size of the device can be adjusted and optimized according to specific needs.

[0048] This utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model. To provide the public with a thorough understanding of this utility model, specific details have been described in detail in the above preferred embodiments; however, those skilled in the art can fully understand this utility model even without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of this utility model, well-known methods, processes, procedures, components, and circuits have not been described in detail.

[0049] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An FPC circuit board on board platform, characterized by, The utility model relates to a circuit board fixing device, including: The mainboard (1) is equipped with two; The increase and decrease block (2) is equipped with a plurality of, and a plurality of increase and decrease block (2) is set between two mainboard (1), and the adjacent increase and decrease block (2) and mainboard (1) are equipped with splicing block and splicing groove, splicing block and splicing groove are adapted, and splicing block and splicing groove are used for the splicing between adjacent mainboard (1) and increase and decrease block (2) and increase and decrease block (2) and increase and decrease block (2), and the upper surface of increase and decrease block (2) is flush with the upper surface of mainboard (1).

2. The FPC board-on-board platform of claim 1, wherein, Also including: The sliding slot (101) is opened in mainboard (1); The sliding block (3) is equipped with a plurality of, and is slidably arranged in sliding slot (101); The pressing plate (4) is equipped with a plurality of, and a plurality of pressing plate (4) are arranged on a plurality of sliding block (3); The sliding slot (101) is used for sliding track limitation of sliding block (3), and the pressing plate (4) is used for the fixed circuit board of pressing.

3. The FPC board-on-board platform of claim 2, wherein, Also including: The conductive plate (6) is arranged in the pressing plate (4); The connecting sheet (601) is connected with the conductive plate (6) at one end, and the other end is used for external static conductive device; The elastic element (7) is arranged in the pressing plate (4), the elastic element (7) is electrically connected with the conductive plate (6), the elastic element (7) is on the side of the pressing plate (4) towards the circuit board, the elastic element (7) is used for fixing the circuit board, and the static electricity generated on the circuit board is guided; The flexible sheet (102) is arranged on the mainboard (1), the flexible sheet (102) is on the side of the mainboard (1) and the circuit board contact, and the flexible sheet (102) is used for the soft contact between the mainboard (1) and the circuit board.

4. The FPC board-on-board platform of claim 2, wherein, Also including: The limiting plate (201) is arranged on the increase and decrease block (2), the limiting plate (201) is on the end of the increase and decrease block (2) perpendicular to the sliding slot (101), and the limiting plate (201) is higher than the upper surface of the increase and decrease block (2), and the limiting plate (201) is used for the position limitation of circuit board.

5. The FPC board-on-board platform of claim 2, wherein, Also including: The spring (10) is equipped with a plurality of, and a plurality of spring (10) are between the pressing plate (4) and the sliding block (3), and the spring (10) is used for the reset of pressing plate (4).

6. The FPC board-on-board platform of claim 2, wherein, Also including: The sleeve (8) is rotationally connected to the side of the sliding block (3) close to the pressing plate (4), and the sleeve (8) is in the pressing plate (4); The connecting rod (502) is slidably connected in the sleeve (8) at one end, and the other end penetrates the pressing plate (4), and the connecting rod (502) is matched with the sleeve (8); The rotating block (5) is stably connected to the other end of the connecting rod (502), and the rotating block (5) is used for controlling the rotation of the connecting rod (502).

7. The FPC board-on-board platform of claim 6, wherein, Also including: The spin pressure block (501) is stably connected to the side of the rotating block (5) close to the pressing plate (4); The convex block (401) is arranged in the pressing plate (4), and the convex block (401) is in contact with the spin pressure block (501); The spin pressure block (501) is used for pressing the convex block (401) to control the downward movement of the pressing plate (4).

8. The FPC board-on-board platform of claim 6, wherein, Also including: The limiting groove (801) is opened in the inner wall of the sleeve (8). The limiting block (503) is arranged on the connecting rod (502), and the limiting block (503) is slidingly connected in the limiting groove (801), so that the connecting rod (502) drives the sleeve (8) to rotate.

9. The FPC board-on-board platform of claim 6, wherein, Also include: The threaded barrel (802) is arranged in the sleeve (8), and the threaded barrel (802) is sleeved in the connecting rod (502); The regulating bolt (9) is arranged in the connecting rod (502), the regulating bolt (9) is T-shaped, the smaller diameter end of the regulating bolt (9) is screwed with the threaded barrel (802), the larger diameter end penetrates the rotating block (5), and the regulating bolt (9) is used for regulating the pressing force of the pressing plate (4).

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