A local pressure anti-warping clamp for a micro soldering machine suitable for flexible circuit boards

Abstract

This invention discloses a localized clamping and anti-warping fixture for micro-welding machines suitable for flexible circuit boards, relating to the field of flexible circuit board fixture technology. It includes a worktable with an internal cavity and a stabilizing device. Movable slots are formed at the front and rear ends of the left and right sides of the worktable's upper surface, with all four slots extending into the worktable's interior. A rubber pad is fixedly laid on the upper surface of the worktable. This invention, through the coordinated use of the worktable, stabilizing device, movable fixing components, guide rod, moving plate, gate frame, clamping component, control mechanism, driving self-locking component, worm gear, two knobs, movable slots, rubber pad one, rubber pad two, and elastic sealing gasket, achieves precise adjustment of the localized fixing range and application of uniform pressure for the welding area of ​​the flexible circuit board, preventing slippage and warping during welding.

Description

Technical Field

[0001] This invention relates to the field of flexible circuit board clamping technology, specifically to a micro-welding machine local clamping anti-warping clamp suitable for flexible circuit boards. Background Technology

[0002] In the field of electronics manufacturing, flexible printed circuit boards (FPCs) are widely used in products such as smartphones, wearable devices, and automotive electronics due to their advantages such as flexibility, thinness, and adaptability to complex installation spaces. As the core equipment for welding and processing flexible printed circuit boards, the welding precision of micro-welding machines directly determines the conductivity and service life of the circuit boards. Especially in scenarios such as pin welding of flexible printed circuit boards and electronic components, and circuit repair, the positioning stability of the welding area is required to be extremely high.

[0003] However, flexible circuit boards are made of soft materials and lack rigidity. Existing fixtures are difficult to fix precisely in local welding areas. During welding, the pressure of the welding head can easily cause the circuit board to slide and shift, or cause local wrinkles and warping, which seriously affects the processing quality and product reliability. Summary of the Invention

[0004] To address the problems mentioned in the background art, the present invention aims to provide a micro-welding machine local clamping anti-warping fixture suitable for flexible circuit boards. This fixture offers the advantages of precisely adjusting the local fixing range and applying uniform pressure to the welding area of ​​the flexible circuit board, preventing slippage and warping during welding. It improves or solves, to some extent, the problems of the softness and insufficient rigidity of flexible circuit boards, the difficulty of accurately fixing local welding areas with existing fixtures, and the tendency for welding head pressure to cause circuit board slippage or local wrinkling and warping during welding, which severely affects processing quality and product reliability.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a micro-welding machine local clamping anti-warping fixture suitable for flexible circuit boards, including a worktable, a cavity is provided inside the worktable, a stabilizing device is provided inside the worktable, movable slots are respectively provided at the front and rear ends of the left and right sides of the upper surface of the worktable, and the four movable slots all penetrate into the interior of the worktable, and a rubber pad is fixedly laid on the upper surface of the worktable.

[0006] The stabilizing device includes two movable fixing components and a control mechanism. The movable fixing components are respectively located on the left and right sides of the upper part of the workbench. The control mechanism is located on the lower side of the two movable fixing components.

[0007] In a preferred embodiment of the present invention, the movable fixing assembly includes guide rods, movable plates, portal frames, and clamping members. The two guide rods are respectively disposed on the front and rear sides of the upper part of the workbench, and their left and right ends are respectively fixedly connected to the inner walls of the left and right sides of the workbench. The two movable plates are respectively sleeved on the left and right end surfaces of the two guide rods and are slidably connected to the guide rods. The two portal frames are respectively disposed on the left and right sides above the workbench. The lower ends of the front and rear sides of the two portal frames extend into the interior of the workbench through the four movable slots and are fixedly connected to the front and rear ends of the upper surface of the movable plate. The two clamping members are respectively disposed on the upper side of the interior of the two portal frames.

[0008] In a preferred embodiment of the present invention, the clamping component includes a pressure plate, limiting rods, a screw, and a knob. The pressure plate is movably disposed on the upper side inside the portal frame. Two limiting rods are provided, each fixedly connected to the front and rear ends of the upper surface of the pressure plate. The upper ends of both limiting rods penetrate the portal frame and are slidably connected to it. The screw is rotatably connected to the middle of the upper surface of the pressure plate, with its upper end penetrating the portal frame and threadedly connected to it. The knob is fixedly connected to the top end of the screw.

[0009] As a preferred embodiment of the present invention, a second rubber pad is fixedly connected to the lower surface of the pressure plate.

[0010] As a preferred embodiment of the present invention, each of the four movable slots is provided with an elastic sealing gasket. The elastic sealing gasket is fixedly connected to the inner wall of the movable slot, and is sleeved on the lower surface of the door frame and movably connected to the door frame.

[0011] In a preferred embodiment of the present invention, the control mechanism includes a second screw, a threaded block, a worm gear, and a self-locking drive component. The second screw is disposed on the lower side of the two movable plates, and its left and right sides are rotatably connected to the inner walls of the left and right sides of the worktable, respectively. The threads on the left and right ends of the second screw have opposite directions of rotation. There are two threaded blocks, which are respectively sleeved on the left and right ends of the second screw and threadedly connected to the second screw. The upper sides of the two threaded blocks are fixedly connected to the lower surfaces of the two movable plates, respectively. The worm gear is sleeved on the middle end surface of the second screw and fixedly connected to the second screw. The self-locking drive component is disposed on the lower side of the worm gear.

[0012] In a preferred embodiment of the present invention, the self-locking drive component includes a worm and a second knob. The worm is disposed on the lower side of the worm wheel and meshes with the worm wheel. Both the front and rear ends of the worm are rotatably connected to the worktable, and the front end extends out of the worktable. The second knob is fixedly connected to the front end of the worm.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1. This invention, through the coordinated use of a worktable, stabilizing device, movable fixing component, guide rod, moving plate, gate frame, clamping component, pressure plate, limit rod, screw one, knob one, control mechanism, screw two, threaded block, worm gear, drive self-locking component, worm, knob two, movable groove, rubber pad one, rubber pad two, and elastic sealing gasket, improves or solves to a certain extent the problems of flexible circuit board material being soft and lacking rigidity, making it difficult for existing fixtures to accurately fix local welding areas, and causing the circuit board to slide and shift or cause local wrinkles and warping during welding due to the pressure of the welding head, which seriously affects the processing quality and product reliability.

[0015] 2. By setting up movable fixing components, the present invention can apply uniform clamping force to the welding area and surrounding area of ​​the flexible circuit board, avoiding damage to the circuit board, while ensuring smooth movement of the door frame and preventing dust from entering the workbench.

[0016] 3. By setting up a control mechanism, the present invention can precisely adjust the distance between the two movable fixed components to adapt to welding areas of different sizes, and has a self-locking function to prevent positional deviation after adjustment. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the fixture of the present invention;

[0018] Figure 2 This is a schematic diagram of the exploded three-dimensional structure of the fixture;

[0019] Figure 3 An exploded three-dimensional structural diagram of a movable fixed component;

[0020] Figure 4 This is a three-dimensional structural diagram of the control mechanism.

[0021] In the diagram: 1. Workbench; 2. Stabilizing device; 3. Movable fixing component; 31. Guide rod; 32. Moving plate; 33. Gate frame; 34. Clamping component; 341. Pressure plate; 342. Limiting rod; 343. Screw one; 344. Knob one; 4. Control mechanism; 41. Screw two; 42. Threaded block; 43. Worm gear; 44. Drive self-locking component; 441. Worm gear; 442. Knob two; 5. Movable groove; 6. Rubber pad one; 7. Rubber pad two; 8. Elastic sealing gasket. Detailed Implementation

[0022] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0025] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include the three-dimensional spatial dimensions of length, width, and depth.

[0026] Example 1

[0027] Reference Figures 1-4 The first embodiment of the present invention provides a micro welding machine local clamping anti-warping fixture suitable for flexible circuit boards, including a worktable 1, a cavity is opened inside the worktable 1, a stabilizing device 2 is set inside the worktable 1, movable grooves 5 are opened at the front and rear ends of the left and right sides of the upper surface of the worktable 1 respectively, and the four movable grooves 5 all penetrate into the interior of the worktable 1. A rubber pad 6 is fixedly laid on the upper surface of the worktable 1.

[0028] The stabilizing device 2 includes two movable fixing components 3 and two control mechanisms 4. The movable fixing components 3 are respectively located on the left and right sides of the upper part of the workbench 1. The control mechanism 4 is located on the lower side of the two movable fixing components 3.

[0029] Specifically, it can achieve precise local fixation of the welding area of ​​flexible circuit boards, effectively preventing the circuit board from sliding, shifting, and warping during welding, thereby improving welding accuracy and product reliability.

[0030] Furthermore, the distance between the two movable fixing components 3 is adjusted by the control mechanism 4 to adapt to welding areas of different sizes. Then, the movable fixing components 3 apply stable pressure to the welding area, which, together with the rubber pad 6, provides initial anti-slip and ensures welding stability.

[0031] Example 2

[0032] In the second embodiment of the present invention, the movable fixing component 3 includes guide rods 31, movable plates 32, portal frames 33, and clamping members 34. The two guide rods 31 are respectively disposed on the front and rear sides of the upper part of the workbench 1, and the left and right ends are respectively fixedly connected to the inner walls of the left and right sides of the workbench 1. The two movable plates 32 are respectively sleeved on the left and right end surfaces of the two guide rods 31 and are slidably connected to the guide rods 31. The two portal frames 33 are respectively disposed on the left and right sides above the workbench 1. The lower ends of the front and rear sides of the two portal frames 33 extend into the interior of the workbench 1 through four movable slots 5 and are fixedly connected to the front and rear ends of the upper surface of the movable plates 32. The two clamping members 34 are respectively disposed on the upper side of the interior of the two portal frames 33.

[0033] The clamping component 34 includes a pressure plate 341, a limiting rod 342, a screw 343, and a knob 344. The pressure plate 341 is movably disposed inside the upper side of the portal frame 33. There are two limiting rods 342, which are fixedly connected to the front and rear ends of the upper surface of the pressure plate 341 respectively. The upper ends of the two limiting rods 342 pass through the portal frame 33 and are slidably connected to the portal frame 33. The screw 343 is rotatably connected to the middle of the upper surface of the pressure plate 341, and its upper end passes through the portal frame 33 and is threadedly connected to the portal frame 33. The knob 344 is fixedly connected to the top of the screw 343.

[0034] Rubber pad 2 7 is fixedly connected to the lower surface of pressure plate 341;

[0035] Each of the four movable slots 5 is provided with an elastic sealing gasket 8. The elastic sealing gasket 8 is fixedly connected to the inner wall of the movable slot 5, and is fitted onto the lower surface of the door frame 33 and is movably connected to the door frame 33.

[0036] Specifically, by setting the movable fixing component 3, a uniform clamping force can be applied to the welding area and surrounding area of ​​the flexible circuit board to avoid damaging the circuit board, while ensuring that the door frame 33 moves smoothly and preventing dust from entering the workbench 1.

[0037] Furthermore, rotating the knob 344 drives the screw 343 to rotate, and under the guidance of the limit rod 342, pushes the pressure plate 341 down, so that the rubber pad 7 presses the circuit board; the door frame 33 adjusts its position by sliding along the guide rod 31 through the moving plate 32, and the elastic sealing pad 8 in the movable groove 5 moves with the door frame 33 to fit its surface, so as to achieve sealing and guiding assistance.

[0038] Example 3

[0039] In the third embodiment of the present invention, the control mechanism 4 includes a second screw 41, a threaded block 42, a worm gear 43, and a self-locking drive 44. The second screw 41 is disposed on the lower side of the two movable plates 32, and its left and right sides are rotatably connected to the inner walls of the left and right sides of the worktable 1, respectively. The threads on the left and right ends of the second screw 41 have opposite directions. There are two threaded blocks 42, which are respectively sleeved on the left and right ends of the second screw 41 and threadedly connected to the second screw 41. The upper sides of the two threaded blocks 42 are fixedly connected to the lower surfaces of the two movable plates 32, respectively. The worm gear 43 is sleeved on the middle end surface of the second screw 41 and fixedly connected to the second screw 41. The self-locking drive 44 is disposed on the lower side of the worm gear 43.

[0040] The self-locking drive component 44 includes a worm gear 441 and a knob 442. The worm gear 441 is located on the lower side of the worm wheel 43 and is meshed with the worm wheel 43. Both the front and rear ends of the worm gear 441 are rotatably connected to the worktable 1, and the front end extends out of the worktable 1. The knob 442 is fixedly connected to the front end of the worm gear 441.

[0041] Specifically, by setting up the control mechanism 4, the distance between the two movable fixing components 3 can be precisely adjusted to adapt to welding areas of different sizes, and it has a self-locking function to prevent positional shift after adjustment.

[0042] Furthermore, rotating knob 442 drives worm 441 to rotate, and worm 441 meshes with and drives worm wheel 43 and screw 41 to rotate. Since the threads at both ends of screw 41 rotate in opposite directions, the two threaded blocks 42 drive the moving plate 32 and the movable fixed component 3 to move in opposite directions. The meshing structure of worm 441 and worm wheel 43 can achieve self-locking, ensuring that the position of movable fixed component 3 is stable after adjustment.

[0043] Working principle:

[0044] In use, the flexible circuit board is first laid flat on the surface of the rubber pad 6 on the workbench 1. The anti-slip properties of the rubber pad 6 are used to initially prevent the circuit board from sliding. Then, the area to be welded is precisely aligned between the clamping parts 34 in the two gate frames 33. When adjusting the position according to the size of the welding area, the knob 442 in the control mechanism 4 is turned to drive the worm gear 441 to rotate. Since the worm gear 441 meshes with the worm wheel 43, the worm wheel 43 will drive the screw 41 to rotate synchronously. Since the threads at the left and right ends of the screw 41 are opposite, the two threaded blocks 42 on its surface will move towards or away from each other along the axial direction of the screw 41. Then, through the moving plate 32 connected to the upper side of the threaded block 42, the gate frame 33 is driven to slide along the guide rod 31 until the two clamping parts 34 are exactly corresponding to the two sides of the welding area, so as to achieve precise adaptation of the local positioning range.

[0045] After the position adjustment is completed, rotate the knob 344 on each clamping component 34 to push the screw 343 down along the internal thread of the portal frame 33, pushing the pressure plate 341 down synchronously. The rubber pad 7 on the lower surface of the pressure plate 341 will first contact the surface of the flexible circuit board. As the knob 344 continues to rotate, the rubber pad 7 gradually applies uniform pressure to firmly press the welding area and the surrounding local area. At the same time, the rubber pad 7 can prevent the pressure plate 341 from damaging the surface of the circuit board. During this process, the elastic sealing pad 8 in the movable groove 5 always fits the surface of the portal frame 33, which can prevent external dust from entering the cavity of the workbench 1 and affecting the operation of the internal mechanism.

[0046] During welding operations, the pressure generated by the welding head contacting the circuit board is offset by the local clamping force of the pressure plate 341, preventing the circuit board from sliding and shifting. At the same time, the stable constraint of the pressure plate 341 on the periphery of the welding area can effectively suppress the thermal expansion and contraction of materials caused by local temperature changes during welding, reduce warping deformation of the welding part, thereby reducing the occurrence of defects such as cold solder joints and circuit breaks, and ensuring welding accuracy and the reliability of flexible circuit boards.

[0047] In summary, by using the worktable 1, stabilizing device 2, movable fixing component 3, guide rod 31, moving plate 32, gate frame 33, clamping component 34, pressure plate 341, limit rod 342, screw 1 343, knob 1 344, control mechanism 4, screw 2 41, threaded block 42, worm gear 43, drive self-locking component 44, worm gear 441, knob 2 442, movable groove 5, rubber pad 1 6, rubber pad 2 7, and elastic sealing gasket 8 in combination, the effect of precisely adjusting the local fixing range and applying uniform pressure to the welding area of ​​the flexible circuit board is achieved, preventing slippage and warping during welding.

[0048] The rubber pad 6, rubber pad 7, elastic sealing gasket 8, screw 41, screw 343, worm gear 43, and worm 441 used in this application can be additionally equipped with protective measures of common knowledge in this technical field under different usage environments. These measures include, but are not limited to, the following: protective covers for equipment protection, dustproof nets for equipment dust prevention, and sealing components or waterproof coatings for equipment waterproofing. These are common technical means used by those skilled in the art.

[0049] It should be noted that rubber gasket 6, rubber gasket 7, elastic sealing gasket 8, screw 41, screw 343, worm gear 43 and worm 441 are existing devices or equipment, or devices or equipment that can be implemented by existing technology. The power supply, connection method, usage method, power source, fixing method, installation method, control method, etc. of the equipment, as well as the materials of each accessory and the selection of various parameters are common knowledge to those skilled in the art, and therefore will not be described in detail in this application document.

[0050] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0051] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0052] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A micro-welding machine local clamping anti-warping fixture suitable for flexible circuit boards, comprising a worktable (1), characterized in that: The workbench (1) has an internal cavity, and a stabilizing device (2) is installed inside the workbench (1). Movable slots (5) are respectively opened at the front and rear ends of the left and right sides of the upper surface of the workbench (1). All four movable slots (5) penetrate into the interior of the workbench (1). A rubber pad (6) is fixedly laid on the upper surface of the workbench (1). The stabilizing device (2) includes two movable fixing components (3) and a control mechanism (4). The movable fixing components (3) are arranged on the left and right sides of the upper part of the workbench (1), respectively. The control mechanism (4) is arranged on the lower side of the two movable fixing components (3).

2. The micro-welding machine local clamping anti-warping fixture for flexible circuit boards according to claim 1, characterized in that: The movable fixing component (3) includes guide rods (31), movable plates (32), portal frames (33) and clamping members (34). The two guide rods (31) are respectively set on the front and rear sides of the upper part of the workbench (1), and the left and right ends are respectively fixedly connected to the inner walls of the left and right sides of the workbench (1). The two movable plates (32) are respectively sleeved on the left and right end surfaces of the two guide rods (31) and are slidably connected to the guide rods (31). The two portal frames (33) are respectively set on the left and right sides above the workbench (1). The lower ends of the front and rear sides of the two portal frames (33) extend into the interior of the workbench (1) through the four movable slots (5) and are fixedly connected to the front and rear ends of the upper surface of the movable plates (32). The two clamping members (34) are respectively set on the upper side of the interior of the two portal frames (33).

3. The micro-welding machine local clamping anti-warping fixture for flexible circuit boards according to claim 2, characterized in that: The clamping component (34) includes a pressure plate (341), a limiting rod (342), a screw (343), and a knob (344). The pressure plate (341) is movably disposed inside the upper side of the portal frame (33). There are two limiting rods (342), which are fixedly connected to the front and rear ends of the upper surface of the pressure plate (341), respectively. The upper ends of the two limiting rods (342) penetrate the portal frame (33) and are slidably connected to the portal frame (33). The screw (343) is rotatably connected to the middle of the upper surface of the pressure plate (341), and its upper end penetrates the portal frame (33) and is threadedly connected to the portal frame (33). The knob (344) is fixedly connected to the top of the screw (343).

4. A micro-welding machine local clamping anti-warping fixture suitable for flexible circuit boards according to claim 3, characterized in that: A rubber pad (7) is fixedly connected to the lower surface of the pressure plate (341).

5. A micro-welding machine local clamping anti-warping fixture suitable for flexible circuit boards according to claim 2, characterized in that: Each of the four movable slots (5) is provided with an elastic sealing gasket (8). The elastic sealing gasket (8) is fixedly connected to the inner wall of the movable slot (5) and is sleeved on the lower surface of the door frame (33) and is movably connected to the door frame (33).

6. A micro-welding machine local clamping anti-warping fixture for flexible circuit boards according to claim 2, characterized in that: The control mechanism (4) includes a second screw (41), a threaded block (42), a worm gear (43), and a self-locking drive (44). The second screw (41) is located on the lower side of the two moving plates (32), and its left and right sides are rotatably connected to the inner walls of the left and right sides of the worktable (1). The threads on the left and right ends of the second screw (41) are opposite in direction. There are two threaded blocks (42), which are respectively sleeved on the left and right ends of the second screw (41) and threadedly connected to the second screw (41). The upper sides of the two threaded blocks (42) are fixedly connected to the lower surfaces of the two moving plates (32). The worm gear (43) is sleeved on the middle end surface of the second screw (41) and fixedly connected to the second screw (41). The self-locking drive (44) is located on the lower side of the worm gear (43).

7. A micro-welding machine local clamping anti-warping fixture for flexible circuit boards according to claim 6, characterized in that: The drive self-locking component (44) includes a worm (441) and a second knob (442). The worm (441) is located on the lower side of the worm wheel (43) and is meshed with the worm wheel (43). Both the front and rear ends of the worm (441) are rotatably connected to the worktable (1), and the front end extends out of the worktable (1). The second knob (442) is fixedly connected to the front end of the worm (441).

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