A flexible circuit board support
By combining negative pressure suction and internal pressure mechanism to fix flexible circuit boards, the problems of large obstruction area, damage to circuit boards and low efficiency in the existing bracket during the fixing process are solved, and a highly efficient and stable fixing effect is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-07
- Publication Date
- 2026-07-21
Smart Images
Figure CN121240336B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of flexible printed circuit board manufacturing technology, and more particularly to a flexible circuit board support. Background Technology
[0002] Flexible circuit boards, also known as flexible printed circuit boards, are copper-clad laminates made of polyimide or polyester film as the substrate. They are formed through printed circuit board manufacturing processes.
[0003] Flexible printed circuit boards (PCBs) have a wide range of applications, but their thin core and flexible material pose significant challenges to PCB manufacturing processes. For example, during drilling, plasma cleaning, copper plating, and electroplating, the material's flexibility can easily lead to deformation. To avoid these problems, current methods include... Figure 7 The existing flexible circuit board support shown is used to support and fix the circuit board to prevent deformation during manufacturing. The existing flexible circuit board support includes a long base plate 1, on which multiple pairs of concave sleeves 10 are welded. Each pair of concave sleeves 10 has a rectangular carrier plate 11 made of polyimide or polyester film. The carrier plate 11 has a window 14, and multiple protrusions 15 are formed on the inner periphery of the window 14. The flexible circuit board 12 is attached to one side of the carrier plate 11 with adhesive tape 13, and the flexible circuit board 12 faces the window 14. The protrusions 15 support the back side of the flexible circuit board 12, and the window 14 facilitates various processing operations on the flexible circuit board 12. The existing flexible circuit board support has the following problems: First, the adhesive tape method significantly obstructs the area of the flexible circuit board 12, reducing the surface area available for processing. Second, peeling off the adhesive tape after application can easily damage the circuit board. Thirdly, since manual pasting is used, there is a problem of low efficiency. Fourthly, after the tape 13 is peeled off, some adhesive will remain on the pasting surface of the flexible circuit board 12, so it needs to be processed later. For example, the adhesive strength of the adhesive on the tape 13 will decrease during drying, resulting in a reduced fixing effect. Fifthly, the pasting operation is often carried out on a workbench. After pasting, the carrier board 11 is inserted into the concave sleeve 10. Since the limiting effect of the concave sleeve 10 is limited, the carrier board 11 is prone to movement, and there is a problem of damage to the flexible circuit board 12 during the transfer process. Summary of the Invention
[0004] This invention provides a flexible circuit board support to overcome the shortcomings of the prior art, solve the problems existing when fixing flexible circuit boards with tape, and create convenient conditions for fixing flexible circuit boards, thus having strong practicality.
[0005] In order to achieve the objectives of this invention, the following technologies are proposed: A flexible circuit board support includes a base with multiple hangers on it. Each hanger has a suction head at its upper end. The hangers, vertically mounted on the base, serve as a carrier for fixing the flexible circuit board, ensuring the board is in a vertical position to facilitate various processing steps. During fixing, the hangers employ a negative pressure suction method. The suction head removes air from the hangers, reducing the air pressure and creating a greater external pressure than internal pressure, thus securing the flexible circuit board. This method minimizes obstruction of the flexible circuit board, facilitating front-side processing. Furthermore, the suction head allows for easy removal of the board without damaging it.
[0006] Furthermore, the hanger includes a back plate with a rectangular hole extending through the front and rear sides. The inner wall of the rectangular hole is formed with multiple protrusions. The front opening of the protrusions is formed with a circular groove. The front opening of the back plate is formed with an annular groove. The annular groove is connected to each circular groove through a connecting groove. The front side of the back plate is also provided with an inner sealing annular groove and an outer sealing annular groove. The outer sealing annular groove is located outside the annular groove, and the inner sealing annular groove is located inside the annular groove. Several segments of the inner sealing annular groove are formed on the front side of the protrusions, and the inner sealing annular groove on the protrusions is located outside the circular groove and the connecting groove.
[0007] A cover plate is fixed to the front of the back plate with screws. A front hole of the same size as the rectangular hole is formed through the cover plate, allowing the flexible circuit board to be exposed on both sides, facilitating processing on both sides of the board. Multiple inner protrusions are formed on the inner wall of the front hole, with a one-to-one correspondence between the inner protrusions and the protrusions. A pair of parallel vertical strips are formed on the front of the back plate, with the flexible circuit board located between them. Circular holes are formed on the inner protrusions, communicating with circular grooves. A rubber post passes through the circular hole, and an outer boss is formed on the outer end of the rubber post. The outer boss is located on the front of the cover plate and has a frustum-shaped structure. This design provides a small contact area with the flexible circuit board, and its protruding structure creates a gap between the flexible circuit board and the cover plate after fixation. This gap facilitates the passage of airflow, heat flow, and liquids, thus facilitating various processes on the flexible circuit board. The outer boss protrudes from the front side of the cover plate. An inner disc is formed at the inner end of the rubber tube, located at the rear side of the cover plate. A suction hole is formed through the inner disc, the outer boss, and the inner disc. The suction hole consists of a rear section, a middle section, and a front section, with the diameter of the rear section larger than that of the middle section, and the diameter of the middle section smaller than that of the front section. When fixing the flexible circuit board, there is a large contact area between the rear side of the flexible circuit board and the front section of the suction hole, thus improving the fixing effect. The middle section of the suction hole enhances the suction force, further improving the suction and fixing effect of the flexible circuit board. A sealing outer ring and a sealing inner ring are formed on the rear side of the cover plate. The sealing outer ring is inserted into the outer sealing ring groove, and the sealing inner ring is inserted into the inner sealing ring groove. Sealing grease is filled in the gaps between the sealing outer ring and the outer sealing ring groove, and between the sealing inner ring and the inner sealing ring groove, to improve the sealing effect after the cover plate and the back plate are connected. In addition, sealant needs to be applied to the contact area between the cover plate and the back plate to ensure the sealing effect of the cavity formed by the annular groove, connecting groove and circular groove inside the hanger, so as to improve the stability of fixing the flexible circuit board.
[0008] Furthermore, a rotating seat is fixed to the base by screws. A hinge shaft is rotatably mounted on the rotating seat. Cotter pins pass through both ends of the hinge shaft, located on the outer side of the rotating seat. A connector is rotatably mounted on the hinge shaft. A rectangular block is welded to the upper end of the connector. An upper protrusion is welded to the upper end of the rectangular block. A connecting shaft is rotatably mounted on the upper end of the upper protrusion. An L-shaped seat is welded to the inner end of the connecting shaft. The outer end of the connecting shaft is limited by a cotter pin or nut to the L-shaped seat. A vertical shaft is rotatably mounted on the transverse section of the L-shaped seat. The upper end is threaded to the lower end of the back plate. The lower end of the vertical shaft is limited by a cotter pin or nut to the lateral section of the L-shaped seat. The vertical shaft is vertically oriented, and its axis is perpendicular to the axis of the connecting shaft. The axis of the hinge shaft is also perpendicular to the axis of the connecting shaft. This allows the back plate to rotate around the vertical shaft to one side of the base. To ensure the back plate's posture, a pin can be inserted into the lateral section of the L-shaped seat, with the other end of the pin inserted into the lower end of the back plate, thus limiting the rotation angle. Furthermore, the back plate can also rotate around the axis of the connecting shaft. After rotation, one side of the vertical section of the L-shaped seat abuts against the rectangular block, thus rotating the back plate from a vertical to a horizontal position for the placement and clamping of the flexible circuit board. Additionally, the back plate can rotate out of the base around the axis of the hinge shaft to avoid interference with the placement of the flexible circuit board due to other mounting fixtures.
[0009] During various processing operations on the flexible circuit board, to prevent uncontrollable rotation or flipping of the backplate, a support leg is welded to the lower end of the backplate. The support leg is positioned opposite to the L-shaped base, and a U-shaped groove is formed at the lower end of the support leg. The outer end of the U-shaped groove is open, and a concave base is fitted onto the lower end of the support leg. The concave base is fixed to the base with screws. An oblong hole is formed on the concave base, and a positioning rod passes through the oblong hole. A pair of limit nuts are threaded onto the positioning rod. The limit nuts are located on both sides of the concave base. The positioning rod passes through the U-shaped groove to lock the support leg. In addition to rotating the backplate through the positioning rod, the concave base also limits the movement of the support leg to prevent the backplate from rotating around the vertical axis.
[0010] Furthermore, the suction head includes an L-shaped tube threadedly connected to the back plate. The vertical section of the L-shaped tube faces upward, and an outer ring is formed on the horizontal section of the L-shaped tube. The inner wall of the outer ring abuts against the rear side of the back plate. The inner end of the L-shaped tube communicates with the annular groove. A connecting ring is formed on the outer periphery of the vertical section of the L-shaped tube, and a connecting tube is threadedly connected to the connecting ring. An upper end tube is threadedly connected to the upper end tube. An inner tube is movably installed inside the upper end tube and the connecting tube. The inner tube is connected to a vacuum pump, thereby using the vacuum pump to suction air from inside the hanger, thus creating a negative pressure space at the contact point between the hanger and the flexible circuit board. After suction is completed, the inner tube can also be sealed to prevent air leakage, which would reduce the adsorption and fixation effect on the flexible circuit board.
[0011] Furthermore, the lower end of the connecting tube is provided with an internal threaded hole, and the upper end of the internal threaded hole is connected to an internal insertion hole. The upper end of the vertical section of the L-shaped tube passes through the internal insertion hole, and the upper end of the internal insertion hole is connected to a first hole. The diameter of the first hole is smaller than the diameter of the internal insertion hole. The upper end of the first hole is connected to a second conical hole. The upper end of the second conical hole is connected to a second hole. The upper end of the second hole is formed with a third conical hole on its inner circumference. The upper end of the third conical hole is larger than the lower end of its diameter. The L-shaped tube is designed so that the suction head is positioned upwards to facilitate vacuuming operations.
[0012] Furthermore, the upper outer circumference of the connecting ring has a tapered structure, and the diameter of the upper end of the tapered structure of the connecting ring is smaller than the diameter of the lower end. A first tapered hole is formed between the internal thread hole and the internal insertion hole, and the diameter of the upper end of the first tapered hole is smaller than the diameter of the lower end. The upper outer circumference of the connecting ring abuts against the inner circumference of the first tapered hole to improve the sealing effect between the connecting ring and the connecting pipe. In addition, when connecting and fixing, it is also necessary to apply sealant or grease to the connection to further ensure the sealing effect.
[0013] Furthermore, a third hole is formed inside the upper tube, and the lower end of the third hole is threaded to the outer periphery of the connecting tube. A fourth conical hole is formed at the upper end of the third hole, and the diameter of the upper end of the fourth conical hole is smaller than the diameter of its lower end. The upper end of the fourth conical hole is connected to the fourth hole.
[0014] Furthermore, an upper ring is formed on the outer periphery of the upper end of the inner tube, and the upper ring is located at the upper end of the upper tube. A connecting tube is formed at the upper end of the inner tube, and a fifth conical hole is opened at the upper end of the connecting tube. The diameter of the upper end of the fifth conical hole is larger than the diameter of its lower end. The lower end of the fifth conical hole is connected to a fifth hole, and the lower end of the fifth hole is connected to a sixth conical hole. The diameter of the upper end of the sixth conical hole is smaller than the diameter of its lower end, and the lower end of the sixth conical hole is connected to a seventh hole. A conical ring is formed at the lower end of the inner tube, and the diameter of the upper end of the conical ring is smaller than the diameter of its lower end. A middle ring is formed at the lower end of the conical ring, and a conical cover is formed at the lower end of the middle ring. The diameter of the lower end of the conical cover is smaller than the diameter of its upper end. Multiple perforations are connected on the conical wall of the conical cover. A rubber head is fixed at the lower end of the conical cover. The lower end of the rubber head has a hemispherical structure, and the inner tube moves within the fourth hole. When air is being drawn in, the outer circumference of the conical ring abuts against the inner wall of the fourth conical hole, ensuring that only air inside the fixture is drawn in during the process, and not outside air, thus improving the efficiency of vacuuming. When the inner tube seals the connecting tube, the lower outer circumference of the rubber head abuts against the inner circumference of the second conical hole, the outer circumference of the conical cover abuts against the inner circumference of the third conical hole, and the upper ring abuts against the end of the upper tube. This solution uses a double sealing method to improve the sealing effect: firstly, by sealing the rubber head and the second conical hole in close contact; and secondly, by sealing the conical cover and the third conical hole in close contact, thus improving the sealing effect.
[0015] Furthermore, the lower end of the connecting pipe is connected by a pair of symmetrically arranged connecting screws via threads. A concave frame is rotatably mounted on the connecting screws, and a pull rod passes through the other end of the concave frame. An end cap is provided on the outer end of the pull rod, located outside the concave frame. An inner pressure plate is connected to the inner end of the pull rod via threads. A first spring is sleeved on the pull rod, with its inner end abutting against the upper end of the inner pressure plate and its outer end abutting against the inner wall of the concave frame. An inner insertion rod is formed on the inner wall of the inner pressure plate. The junction between the inner insertion rod and the inner pressure plate is tapered. The diameter of the upper end of the tapered structure at the junction of the inner insertion rod and the inner pressure plate is larger than the diameter of its lower end. When the inner pipe seals the connecting pipe, the outer circumference of the tapered structure at the junction of the inner insertion rod and the inner pressure plate abuts against the inner circumference of the fifth tapered hole, and the inner insertion rod passes through the fifth hole. The inner insertion rod and its tapered structure further prevent outside air from entering the inner pipe, thereby improving the sealing effect. Simultaneously rotate the concave frame to facilitate the connection and operation of the inner tube and vacuum pump.
[0016] Furthermore, it also includes an internal pressure mechanism on the hanger, which acts on the front side of the flexible circuit board to improve the fixing effect of the flexible circuit board. In addition, when the flexible circuit board is picked up and fixed, the circuit board can be pre-fixed to facilitate the fixing operation of the flexible circuit board.
[0017] The internal pressure mechanism includes two pairs of horizontally arranged guide rails fixed to the rear side of the back plate by screws. Slider slides are movably mounted on the guide rails. Connecting plates are mounted on the sliders on the same side by screws. Each slider is threadedly connected to an outward-extending guide rod. A folded plate is movably mounted on the outward-extending guide rod. The outer end of the folded plate is formed on a side plate. An inwardly bent inner extension plate is formed on the front side of the side plate, located in front of the cover plate. A connecting protrusion is formed on the inner side of the inner extension plate. A screw is threadedly connected to the inner end of the connecting protrusion. An internal pressure rubber column is fitted onto the inner end of the screw. An end cap is formed on the outer end of the screw. The internal pressure rubber column corresponds one-to-one with the rubber columns located on both sides. The inner wall of the side plate is welded with a movable protrusion. The inner end of the movable protrusion is rotatably equipped with a roller. The two ends of the roller are connected to a fourth nut by threads. The rear ends of the back plate are fixed with C-shaped seats by screws. The two sides of the C-shaped seats are respectively provided with transverse holes. The inner end of the transverse holes is connected to an oblique hole. The inner end of the oblique hole extends backward at an angle. The roller moves in the transverse holes and the oblique holes. The fourth nut is located on both sides of the C-shaped seat. When the roller moves in the transverse holes, it can make the inner pressure rubber column move inward. When the roller moves in the oblique holes, it can make the inner pressure rubber column move inward, so that the inner pressure rubber column abuts against the front side of the flexible circuit board and, together with the outer protrusion, fixes the flexible circuit board.
[0018] A fixing block is fixed to the upper end of the back plate by screws. A pair of vertical guide rods are connected to the fixing block by threads. The vertical guide rods are vertically arranged and have a horizontal arm that can be moved on them. A boss is formed in the middle of the front side of the horizontal arm. The two ends of the horizontal arm have grooves. The two ends of the horizontal arm are limited by cotter pins or nuts and have rotating rods that are rotatably mounted. A pressure roller is mounted on the rotating rod. A through shaft is welded to the front side of the fixing block. A swing arm is rotatably mounted on the through shaft. A first nut is connected to the front end of the through shaft by threads. The first nut is located outside the swing arm. A wheel axle is rotatably mounted on the swing arm. A second nut is connected to the front end of the wheel axle by threads. The second nut is located outside the swing arm. A top wheel is located at the rear end of the wheel axle. The outer circumference of the top wheel abuts against the upper surface of the boss. A pair of vertical guide holes are opened at the upper end of the swing arm. A movable screw is movably mounted in the vertical guide holes. A limit block is connected to the inner end of the movable screw by threads. The upper end of the vertical guide rod passes through the limit block. A connecting arm is fixed to the upper slider with screws. An L-shaped push plate is bent at the inner end of the connecting arm. An inner pressure frame is welded to the upper wall of the L-shaped push plate, and an inclined wall is formed on the outer side of the inner pressure frame. The outer circumference of the pressure roller abuts against the inclined wall. A pair of transverse guide rods are threaded through the L-shaped push plate. The inner ends of the transverse guide rods are threaded to a fixed block, and the outer ends are threaded to an outer nut. A second spring is sleeved on the transverse guide rod. The outer end of the second spring abuts against the inner wall of the vertical section of the L-shaped push plate, and the inner end of the second spring abuts against the outer wall of the fixed block. Movement of the transverse arm moves the inner pressure rubber columns on both sides inward. The position of the transverse arm can be locked by the swing arm and top wheel. The limiting block sleeved on the vertical guide rod keeps the swing arm in a vertical position.
[0019] The advantages of the above technical solution are: This invention utilizes a combination of suction fixation and internal pressure fixation, significantly reducing the obstruction area on the flexible circuit board during fixation. It facilitates the removal of the flexible circuit board from the fixation process without damaging it. The fixation is convenient and simple to perform. No other impurity particles are introduced during the fixation process, thus facilitating the processing of the flexible circuit board and providing excellent fixation performance. Attached Figure Description
[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will now be described in further detail with reference to the accompanying drawings.
[0021] Figure 1 A three-dimensional structural diagram of the flexible circuit board support is shown.
[0022] Figure 2 The diagram shows the three-dimensional structure of the hanger from two different perspectives.
[0023] Figure 3The three-dimensional structure of the cover plate is shown from two different perspectives.
[0024] Figure 4 A three-dimensional structural diagram of the suction head is shown.
[0025] Figure 5 The diagram shows an overall cross-sectional view of the suction head, as well as cross-sectional views of the connecting tube, upper tube, and inner tube.
[0026] Figure 6 The diagram shows a three-dimensional view of the hanger and internal pressure mechanism from two different perspectives.
[0027] Figure 7 The diagram shows a three-dimensional view of an existing flexible circuit board support from two different perspectives.
[0028] Explanation of reference numerals in the attached figures: 1. Long strip base plate, 10. Concave sleeve, 11. Carrier plate, 12. Flexible circuit board, 13. Adhesive tape, 14. Window, 15. Protrusion, 2. Base, 3. Hanger, 300. Rotating seat, 301. Hinge shaft, 302. Connector, 303. Rectangular block, 304. Upper protrusion, 305. Connecting shaft, 306. L-shaped seat, 307. Vertical shaft, 308. Back plate, 309. Support leg, 310. U-shaped groove, 311. Concave seat, 312. Positioning rod, 313. Limit nut, 314. Waist-shaped hole, 315. Rectangular hole, 316. Protrusion, 317. Ring groove, 318. Connecting groove, 319. Circular groove, 320. Inner sealing ring groove, 320. Outer Sealing ring groove 321, cover plate 322, front side hole 323, inner convex plate 324, round hole 325, vertical bar 326, outer boss 327, inner plate 328, suction hole 329, sealing outer ring 330, sealing inner ring 331, suction head 4, L-shaped tube 400, outer ring 401, inner insertion rod 402, connecting ring 403, connecting screw 404, concave frame 405, pull rod 406, end cap 407, inner pressure plate 408, first spring 409, connecting tube 410, first hole 411, second conical hole 412, second hole 413, upper end tube 414, fourth conical hole 415. Inner tube 416, upper end ring 417, connecting insertion tube 418, sixth conical hole 419, middle ring 420, conical ring 421, conical cover 422, through hole 423, rubber head 424, internal threaded hole 425, first conical hole 426, inner insertion hole 427, third conical hole 428, fourth hole 429, fifth hole 430, fifth conical hole 431, third hole 432, seventh hole 433, internal pressure mechanism 5, guide rail 500, slider 501, outward guide rod 502, connecting plate 503, connecting arm 504, L-shaped push plate 505, transverse guide rod 506, outer nut 507, second spring Spring 508, inner pressure frame 509, inclined wall 510, fixing block 511, vertical guide rod 512, horizontal arm 513, groove 514, rotating rod 515, pressure roller 516, boss 517, through shaft 518, wheel axle 519, top wheel 520, movable screw 521, vertical guide hole 522, limiting block 523, folding plate 524, side plate 525, moving protrusion 526, roller 527, C-shaped seat 528, inclined hole 529, horizontal hole 530, inner extension plate 531, connecting protrusion 532, screw 533, end cap 534, inner pressure rubber column 535, swing arm 536. Detailed Implementation
[0029] Example 1 like Figure 1 As shown, a flexible circuit board support includes a base 2, on which a plurality of hangers 3 are provided. The upper end of each hanger 3 is provided with a suction head 4, which is used to suction air from the hanger 3 to vertically fix the flexible circuit board 12 attached to the hanger 3 by means of negative pressure suction.
[0030] like Figure 2 and Figure 3As shown, the hanger 3 includes a back plate 308. The back plate 308 has a rectangular hole 315 extending through its front and rear sides. The inner wall of the rectangular hole 315 is formed with a plurality of protrusions 316. The front opening of the protrusions 316 is formed with a circular groove 319. The front opening of the back plate 308 is formed with an annular groove 317. The annular groove 317 is connected to each circular groove 319 through a connecting groove 318. The front side of the back plate 308 is also provided with an inner sealing annular groove 320 and an outer sealing annular groove 321. The outer sealing annular groove 321 is located outside the annular groove 317, and the inner sealing annular groove 320 is located inside the annular groove 317. Several segments of the inner sealing annular groove 320 are formed on the front side of the protrusions 316, and the inner sealing annular groove 320 on the protrusions 316 is located outside the circular groove 319 and the connecting groove 318. A cover plate 322 is fixed to the front side of the back plate 308 by screws. A front hole 323 of the same size as the rectangular hole 315 is formed through the cover plate 322. Multiple inner protrusions 324 are formed on the inner wall of the front hole 323. The inner protrusions 324 and the protrusions 316 are in a one-to-one correspondence. A pair of parallel vertical strips 326 are formed on the front side of the back plate 308. The flexible circuit board 12 is located between the vertical strips 326. A circular hole 325 is opened on the inner protrusion 324. The circular hole 325 communicates with the circular groove 319. A rubber post passes through the circular hole 325. An outer boss 327 is formed on the outer end of the rubber post. 7 is located on the front side of the cover plate 322. The outer boss 327 protrudes from the front side of the cover plate 322. An inner plate 328 is formed on the inner end of the rubber tube. The inner plate 328 is located on the rear side of the cover plate 322. A suction hole 329 is formed through the inner plate 328, the outer boss 327 and the inner plate 328. A sealing outer ring 330 and a sealing inner ring 331 are formed on the rear side of the cover plate 322. The sealing outer ring 330 is inserted into the outer sealing ring groove 321 and the sealing inner ring 331 is inserted into the inner sealing ring groove 320. The gap between the sealing outer ring 330 and the outer sealing ring groove 321 and the gap between the sealing inner ring 331 and the inner sealing ring groove 320 are filled with sealing grease.
[0031] like Figure 2As shown, a rotating seat 300 is fixed to the base 2 by screws. A hinge shaft 301 is rotatably mounted on the rotating seat 300. Cotter pins are respectively inserted at both ends of the hinge shaft 301, with the cotter pins located on the outer side of the rotating seat 300. A connector 302 is rotatably mounted on the hinge shaft 301. A rectangular block 303 is welded to the upper end of the connector 302. An upper protrusion 304 is welded to the upper end of the rectangular block 303. A connecting shaft 305 is rotatably mounted on the upper end of the upper protrusion 304. An L-shaped seat 306 is welded to the inner end of the connecting shaft 305. The outer end of the connecting shaft 305 is limited to the L-shaped seat 306 by a cotter pin or nut. A vertical shaft 307 is rotatably mounted on the transverse section of the L-shaped seat 306. The upper end of the vertical shaft 307 is threaded to the lower end of the back plate 308. The lower end of the vertical shaft 307 is limited to the transverse section of the L-shaped seat 306 by a cotter pin or nut. The vertical shaft 307 is vertically oriented, and its axis is perpendicular to the axis of the connecting shaft 305. The axis of the hinge shaft 301 is also perpendicular to the axis of the connecting shaft 305. A support leg 309 is welded to the lower end of the back plate 308. The support leg 309 is positioned opposite to the L-shaped seat 306. A U-shaped groove 310 is provided at the lower end of the support leg 309, with an opening at the outer end of the U-shaped groove 310. A concave seat 311 is fitted onto the lower end of the support leg 309. The concave seat 311 is fixed to the base 2 by screws. A waist-shaped hole 314 is provided on the concave seat 311. A positioning rod 312 passes through the waist-shaped hole 314. A pair of limiting nuts 313 are threaded onto the positioning rod 312. The limiting nuts 313 are located on both sides of the concave seat 311. The positioning rod 312 passes through the U-shaped groove 310 to lock the support leg 309.
[0032] like Figure 4 and Figure 5 As shown, the suction head 4 includes an L-shaped tube 400 that is threadedly connected to the back plate 308. The vertical section of the L-shaped tube 400 is arranged facing upwards. An outer ring 401 is formed on the horizontal section of the L-shaped tube 400. The inner wall of the outer ring 401 abuts against the rear side of the back plate 308. The inner end of the L-shaped tube 400 is connected to the ring groove 317. A connecting ring 403 is formed on the outer periphery of the vertical section of the L-shaped tube 400. A connecting tube 410 is threadedly connected to the connecting ring 403. An upper end tube 414 is threadedly connected to the upper end tube 414 and the connecting tube 410. An inner tube 416 is movably arranged inside the upper end tube 414 and the connecting tube 410.
[0033] Specifically, the lower end of the connecting pipe 410 is provided with an internal threaded hole 425, and the upper end of the internal threaded hole 425 is connected to an internal insertion hole 427. The upper end of the vertical section of the L-shaped pipe 400 passes through the internal insertion hole 427. The upper end of the internal insertion hole 427 is connected to a first hole 411. The diameter of the first hole 411 is smaller than the diameter of the internal insertion hole 427. The upper end of the first hole 411 is connected to a second conical hole 412. The upper diameter of the second conical hole 412 is larger than the lower diameter. The upper end of the second conical hole 412 is connected to a second hole 413. The upper inner circumference of the second hole 413 is formed with a third conical hole 428. The upper diameter of the third conical hole 428 is larger than the lower diameter. The upper outer periphery of the connecting ring 403 has a tapered structure. The diameter of the upper end of the tapered structure of the connecting ring 403 is smaller than the diameter of the lower end. A first tapered hole 426 is formed between the internal threaded hole 425 and the internal insertion hole 427. The diameter of the upper end of the first tapered hole 426 is smaller than the diameter of the lower end. The upper outer periphery of the connecting ring 403 abuts against the inner periphery of the first tapered hole 426.
[0034] Specifically, a third hole 432 is formed inside the upper tube 414. The lower end of the third hole 432 is connected to the outer periphery of the connecting tube 410 by a thread. A fourth conical hole 415 is formed at the upper end of the third hole 432. The diameter of the upper end of the fourth conical hole 415 is smaller than the diameter of its lower end. The upper end of the fourth conical hole 415 is connected to a fourth hole 429.
[0035] Specifically, an upper ring 417 is formed on the outer periphery of the upper end of the inner tube 416. The upper ring 417 is located above the upper end of the upper tube 414. A connecting tube 418 is formed on the upper end of the inner tube 416. A fifth conical hole 431 is opened at the upper end of the connecting tube 418. The diameter of the upper end of the fifth conical hole 431 is larger than the diameter of its lower end. The lower end of the fifth conical hole 431 is connected to a fifth hole 430. The lower end of the fifth hole 430 is connected to a sixth conical hole 419. The diameter of the upper end of the sixth conical hole 419 is smaller than the diameter of its lower end. The lower end of the conical hole 419 is connected to the seventh hole 433. The lower end of the inner tube 416 is formed with a conical ring 421. The diameter of the upper end of the conical ring 421 is smaller than the diameter of its lower end. The lower end of the conical ring 421 is formed with a middle ring 420. The lower end of the middle ring 420 is formed with a conical cover 422. The diameter of the lower end of the conical cover 422 is smaller than the diameter of its upper end. Multiple through holes 423 are connected to the conical wall of the conical cover 422. A rubber head 424 is fixed to the lower end of the conical cover 422. The lower end of the rubber head 424 has a hemispherical structure. The inner tube 416 moves within the fourth hole 429. When air is drawn in, the outer periphery of the conical ring 421 abuts against the inner wall of the fourth conical hole 415. When the inner tube 416 seals the connecting tube 410, the lower outer periphery of the rubber head 424 abuts against the inner periphery of the second conical hole 412, the outer periphery of the conical cover 422 abuts against the inner periphery of the third conical hole 428, and the upper end ring 417 abuts against the end of the upper end tube 414.
[0036] In some embodiments, a pair of symmetrically arranged connecting screws 404 are threadedly connected to the lower end of the connecting pipe 410. A concave bracket 405 is rotatably mounted on the connecting screws 404. A pull rod 406 is threaded through the other end of the concave bracket 405. An end cap 407 is provided on the outer end of the pull rod 406, and the end cap 407 is located outside the concave bracket 405. An inner pressure plate 408 is threadedly connected to the inner end of the pull rod 406. A first spring 409 is sleeved on the pull rod 406, and the inner end of the first spring 409 abuts against the inner pressure plate 408. At the upper end, the outer end of the first spring 409 abuts against the inner wall of the concave frame 405. An inner insert rod 402 is formed on the inner wall of the inner pressure plate 408. The junction of the inner insert rod 402 and the inner pressure plate 408 is a conical structure. The diameter of the upper end of the conical structure at the junction of the inner insert rod 402 and the inner pressure plate 408 is larger than the diameter of its lower end. When the inner tube 416 seals the connecting tube 410, the outer periphery of the conical structure at the junction of the inner insert rod 402 and the inner pressure plate 408 abuts against the inner periphery of the fifth conical hole 431, and the inner insert rod 402 passes through the fifth hole 430.
[0037] In this embodiment, the following steps are performed when fixing the flexible circuit board 12: Step 100: The staff places the flexible circuit board support on the workbench.
[0038] Step 101: The operator moves the positioning rod 312 outward so that the positioning rod 312 is removed from the U-shaped groove 310.
[0039] In step 102, the operator rotates the back plate 308 and cover plate 322 outward around the hinge axis 301 so that the back plate 308 and cover plate 322 rotate to one side of the base 2. Then, the operator rotates the back plate 308 and cover plate 322 around the connecting axis 305 so that one side of the L-shaped seat 306 abuts against the rectangular block 303. Finally, the operator rotates the back plate 308 and cover plate 322 around the vertical axis 307. After rotation, the rotation posture of the back plate 308 and cover plate 322 is limited by the pin. After the limitation, the back plate 308 and cover plate 322 are in a horizontal posture.
[0040] Step 103: The staff places the flexible circuit board 12 between the vertical bars 326 and on the outer protrusion 327, and adjusts the position of the flexible circuit board 12.
[0041] In step 104, the operator connects the vacuum pump's connecting hose to the connecting tube 418, and then pulls the inner tube 416 outward so that the outer circumference of the conical ring 421 abuts against the inner wall of the fourth conical hole 415. At this time, the vacuum pump, connecting hose, seventh hole 433, through hole 423, first hole 411, second conical hole 412, second hole 413, L-shaped tube 400, annular groove 317, connecting groove 318, circular groove 319, suction hole 329, and the cavity formed by the contact position of the outer protrusion 327 and the flexible circuit board 12 are connected. Then the vacuum pump is started, and the air in the cavity will be sucked out. When the suction end is reached, the inner tube 416 needs to be moved inward gradually. After the vacuum is completed, the inner tube 416 is moved inward so that the lower outer circumference of the rubber head 424 abuts against the inner circumference of the second conical hole 412, and the outer circumference of the conical cover 422 abuts against the inner circumference of the third conical hole 428.
[0042] Step 105: Rotate the concave bracket 405 upwards and insert the inner rod 402 into the fifth hole 430.
[0043] Step 106: Rotate the back plate 308 so that the back plate 308 and the flexible circuit board 12 adsorbed and fixed on it are in the following position. Figure 1 As shown in the figure, the positioning rod 312 is rotated and moved so that it is located in the U-shaped groove 310, at which time the flexible circuit board 12 is fixed.
[0044] Step 107: Perform the necessary processing operations for the flexible circuit board 12.
[0045] Example 2 like Figure 1 As shown, a flexible circuit board support includes a base 2, a plurality of hangers 3 are provided on the base 2, a suction head 4 is provided at the upper end of the hanger 3, and an internal pressure mechanism 5 is provided on the hanger 3. The hanger 3 and the suction head 4 have the same structure as the hanger 3 and suction head 4 in Embodiment 1.
[0046] like Figure 6As shown, the internal pressure mechanism 5 includes two pairs of horizontally arranged guide rails 500 fixed to the rear side of the back plate 308 by screws. A slider 501 is movably mounted on the guide rails 500. A connecting plate 503 is mounted on the slider 501 on the same side by screws. An outwardly extending guide rod 502 is threadedly connected to each slider 501. A folded plate 524 is movably mounted on the outwardly extending guide rod 502. The outer end of the folded plate 524 is formed on a side plate 525. An inwardly bent inner extension plate 531 is formed on the front side of the side plate 525. The inner extension plate 531 is located on the front side of the cover plate 322. A connecting protrusion 532 is formed on the inner side of the inner extension plate 531. A screw 533 is threadedly connected to the inner end of the connecting protrusion 532. An inner pressure rubber column 535 is sleeved on the inner end, and an end cap 534 is formed on the outer end of the screw 533. The inner pressure rubber column 535 and the rubber columns on both sides are in a one-to-one correspondence. A movable protrusion 526 is welded to the inner wall of the side plate 525. A roller 527 is rotatably provided on the inner end of the movable protrusion 526. The two ends of the roller 527 are connected to the fourth nut by threads. The two ends of the back plate 308 are fixed with C-shaped seats 528 by screws. A transverse hole 530 is opened on both sides of the C-shaped seat 528. The inner end of the transverse hole 530 is connected to an oblique hole 529. The inner end of the oblique hole 529 extends backward at an angle. The roller 527 moves in the transverse hole 530 and the oblique hole 529. The fourth nut is located on both sides of the C-shaped seat 528. A fixing block 511 is fixed to the upper end of the back plate 308 by screws. A pair of vertical guide rods 512 are threaded onto the fixing block 511. The vertical guide rods 512 are vertically arranged, and a horizontal arm 513 is movably mounted on the vertical guide rod 512. A boss 517 is formed in the middle of the front side of the horizontal arm 513. Grooves 514 are opened at both ends of the horizontal arm 513. Rotating rods 515 are rotatably mounted at both ends of the horizontal arm 513 by cotter pins or nuts. Pressure rollers 516 are rotatably mounted on the rotating rods 515. A through shaft 518 is welded to the front side of the fixing block 511. A swing arm 536 is rotatably mounted on the through shaft 518. The front end of the through shaft 518 is open to the through shaft 518. A first nut is threadedly connected to the swing arm 536, which is located on the outside of the swing arm 536. A wheel axle 519 is rotatably mounted on the swing arm 536. A second nut is threadedly connected to the front end of the wheel axle 519, which is located on the outside of the swing arm 536. A top wheel 520 is provided at the rear end of the wheel axle 519. The outer periphery of the top wheel 520 abuts against the upper surface of the boss 517. A pair of vertical guide holes 522 are provided at the upper end of the swing arm 536. A movable screw 521 is movably mounted in the vertical guide holes 522. The inner end of the movable screw 521 is threadedly connected to a limit block 523. The upper end of the vertical guide rod 512 passes through the limit block 523.
[0047] A connecting arm 504 is fixed to the upper slider 501 by screws. An L-shaped push plate 505 is bent at the inner end of the connecting arm 504. An inner pressure frame 509 is welded to the upper wall of the L-shaped push plate 505. An inclined wall 510 is formed on the outer side of the inner pressure frame 509. The outer periphery of the pressure roller 516 abuts against the inclined wall 510. A pair of transverse guide rods 506 are passed through the L-shaped push plate 505. The inner end of the transverse guide rod 506 is connected to the fixing block 511 by threads. The outer end of the transverse guide rod 506 is connected to the outer nut 507 by threads. A second spring 508 is sleeved on the transverse guide rod 506. The outer end of the second spring 508 abuts against the inner wall of the vertical section of the L-shaped push plate 505. The inner end of the second spring 508 abuts against the outer wall of the fixing block 511.
[0048] In this embodiment, the fixing of the flexible circuit board 12 is performed between steps 103 and 104 in embodiment 1, and the specific method is as follows: The operator presses the horizontal arm 513 inward to move it inward along the axis of the vertical guide rod 512. During the movement, the pressure roller 516 acts on the inclined wall 510, causing the L-shaped push plates 505 to move closer together. During this process, the second spring 508 is compressed. As the L-shaped push plates 505 move closer together, they pull the side plate 525 inward. During this movement, the roller 527 moves from the horizontal hole 530 to the inclined hole 529. This causes the inner pressure rubber column 535 to move inward to the outer protrusion 327. When the roller 527 moves in the inclined hole 529, it causes the inner pressure rubber column 535 to move inward and press against the front side of the flexible circuit board 12, thus completing the fixation of the flexible circuit board 12. After fixing, the operator rotates the swing arm 536 so that the top wheel 520 abuts against the upper surface of the boss 517, thus locking the position of the horizontal arm 513. Then, the limiting block 523 is moved downwards and fitted onto the vertical guide rod 512, thus locking the rotation of the swing arm 536 and further improving the fixing effect on the flexible circuit board 12. Furthermore, this mechanism allows the flexible circuit board 12 to be fixed without suction.
[0049] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Obviously, those skilled in the art can make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention also intends to include these modifications and variations.
Claims
1. A flexible circuit board support, characterized in that, Includes a base (2), on which multiple hangers (3) are provided. The upper end of the hanger (3) is provided with a suction head (4). The suction head (4) is used to suck the air in the hanger (3) so as to vertically fix the flexible circuit board (12) attached to the hanger (3) by means of negative pressure suction. The hanger (3) includes a back plate (308), the back plate (308) has a rectangular hole (315), the inner wall of the rectangular hole (315) is formed with a plurality of protrusions (316), the protrusions (316) are formed with circular grooves (319), the back plate (308) is formed with an annular groove (317), and the annular groove (317) is connected to each circular groove (319) through a connecting groove (318); A cover plate (322) is fixed on the back plate (308). A front hole (323) with the same size as the rectangular hole (315) is formed on the cover plate (322). Multiple inner protrusions (324) are formed on the inner wall of the front hole (323). The inner protrusions (324) and the protrusions (316) are in a one-to-one correspondence. A pair of parallel vertical strips (326) are formed on the back plate (308). The flexible circuit board (12) is located between the vertical strips (326). A circular hole (325) is provided on the top, which is connected to a circular groove (319). A rubber column is inserted through the circular hole (325). An outer boss (327) is formed on the outer end of the rubber column. The outer boss (327) protrudes from the front side of the cover plate (322). An inner plate (328) is formed on the inner end of the rubber tube. The inner plate (328) is located on the rear side of the cover plate (322). A suction hole (329) is formed through the inner plate (328), the outer boss (327), and the inner plate (328). The suction head (4) includes an L-shaped tube (400) connected to the back plate (308). The vertical section of the L-shaped tube (400) is arranged upward. An outer ring (401) is formed on the horizontal section of the L-shaped tube (400). The inner wall of the outer ring (401) abuts against the rear side of the back plate (308). The inner end of the L-shaped tube (400) is connected to the ring groove (317). A connecting ring (403) is formed on the outer periphery of the vertical section of the L-shaped tube (400). A connecting tube (410) is connected to the connecting ring (403). An upper end tube (414) is connected to the upper end tube (414). An inner tube (416) is movably arranged inside the upper end tube (414) and the connecting tube (410).
2. The flexible circuit board support according to claim 1, characterized in that, A rotating seat (300) is fixed to the base (2) by screws. A hinge shaft (301) is rotatably mounted on the rotating seat (300). A connector (302) is rotatably mounted on the hinge shaft (301). A rectangular block (303) is welded to the upper end of the connector (302). An upper protrusion (304) is welded to the upper end of the rectangular block (303). A connecting shaft (305) is rotatably mounted on the upper end of the upper protrusion (304). An L-shaped seat (306) is welded to the inner end of the connecting shaft (305). A vertical shaft (307) is rotatably mounted on the L-shaped seat (306). The upper end of the vertical shaft (307) is located at the lower end of the back plate (308). The lower end of the back plate (308) is welded with a support leg (309). The support leg (309) is opposite to the L-shaped seat (306). The lower end of the support leg (309) is provided with a U-shaped groove (310). The outer end of the U-shaped groove (310) is open. The lower end of the support leg (309) is fitted with a concave seat (311). The concave seat (311) is fixed on the base (2). The concave seat (311) is provided with a waist-shaped hole (314). A positioning rod (312) is inserted into the waist-shaped hole (314). When the positioning rod (312) is inserted into the U-shaped groove (310), the support leg (309) is locked.
3. The flexible circuit board support according to claim 1, characterized in that, The lower end of the connecting pipe (410) is provided with an internal threaded hole (425), and the upper end of the internal threaded hole (425) is connected to an internal insertion hole (427). The upper end of the vertical section of the L-shaped pipe (400) passes through the internal insertion hole (427). The upper end of the internal insertion hole (427) is connected to a first hole (411). The diameter of the first hole (411) is smaller than the diameter of the internal insertion hole (427). The upper end of the first hole (411) is connected to a second conical hole (412). The upper diameter of the second conical hole (412) is larger than the lower diameter. The upper end of the second conical hole (412) is connected to a second hole (413). The upper inner circumference of the second hole (413) is formed with a third conical hole (428). The upper diameter of the third conical hole (428) is larger than the lower diameter.
4. The flexible circuit board support according to claim 3, characterized in that, The upper outer periphery of the connecting ring (403) has a tapered structure. The diameter of the upper end of the tapered structure of the connecting ring (403) is smaller than the diameter of the lower end. A first tapered hole (426) is formed between the internal threaded hole (425) and the internal insertion hole (427). The diameter of the upper end of the first tapered hole (426) is smaller than the diameter of the lower end. The upper outer periphery of the connecting ring (403) abuts against the inner periphery of the first tapered hole (426).
5. The flexible circuit board support according to claim 3, characterized in that, The upper tube (414) has a third hole (432) formed inside. The lower end of the third hole (432) is connected to the outer periphery of the connecting tube (410) by a thread. The upper end of the third hole (432) has a fourth conical hole (415) formed. The diameter of the upper end of the fourth conical hole (415) is smaller than the diameter of its lower end. The upper end of the fourth conical hole (415) is connected to the fourth hole (429).
6. The flexible circuit board support according to claim 5, characterized in that, An upper end ring (417) is formed on the outer periphery of the upper end of the inner tube (416). The upper end ring (417) is located at the upper end of the upper end tube (414). A connecting tube (418) is formed on the upper end of the inner tube (416). A fifth conical hole (431) is opened at the upper end of the connecting tube (418). The diameter of the upper end of the fifth conical hole (431) is larger than the diameter of its lower end. The lower end of the fifth conical hole (431) is connected to a fifth hole (430). The lower end of the fifth hole (430) is connected to a sixth conical hole (419). The diameter of the upper end of the sixth conical hole (419) is smaller than the diameter of its lower end. The lower end of 419 is connected to the seventh hole (433). The lower end of the inner tube (416) is formed with a conical ring (421). The diameter of the upper end of the conical ring (421) is smaller than the diameter of its lower end. The lower end of the conical ring (421) is formed with a middle ring (420). The lower end of the middle ring (420) is formed with a conical cover (422). The diameter of the lower end of the conical cover (422) is smaller than the diameter of its upper end. Multiple perforations (423) are connected to the conical wall of the conical cover (422). A rubber head (424) is fixed at the lower end of the conical cover (422). The lower end of the rubber head (424) has a hemispherical structure. The inner tube (416) moves within the fourth hole (429); When air is drawn in, the outer periphery of the conical ring (421) abuts against the inner wall of the fourth conical hole (415); When the inner tube (416) seals the connecting tube (410), the lower outer periphery of the rubber head (424) abuts against the inner periphery of the second conical hole (412), the outer periphery of the conical cover (422) abuts against the inner periphery of the third conical hole (428), and the upper ring (417) abuts against the end of the upper tube (414).
7. The flexible circuit board support according to claim 6, characterized in that, The lower end of the connecting pipe (410) is connected to a pair of symmetrically arranged connecting screws (404). A concave bracket (405) is rotatably mounted on the connecting screws (404). A pull rod (406) is passed through the other end of the concave bracket (405). An end cap (407) is provided on the outer end of the pull rod (406). The end cap (407) is located on the outer side of the concave bracket (405). An inner pressure plate (407) is threadedly connected to the inner end of the pull rod (406). 8) A first spring (409) is sleeved on the pull rod (406). The inner end of the first spring (409) abuts against the upper end of the inner pressure plate (408), and the outer end of the first spring (409) abuts against the inner wall of the concave frame (405). An inner insertion rod (402) is formed on the inner wall of the inner pressure plate (408). When the inner tube (416) seals the connecting tube (410), the inner insertion rod (402) passes through the fifth hole (430).
8. The flexible circuit board support according to claim 1, characterized in that, It also includes an internal pressure mechanism (5) provided on the hanger (3), the internal pressure mechanism (5) having multiple internal pressure rubber pillars (535), the inner end of the internal pressure rubber pillars (535) abutting against the outer wall of the flexible circuit board (12).
Citation Information
Patent Citations
Hanging tool for copper deposition of printed circuit board
CN114679853A
Circuit board placing rack
CN120133262A