Soldering fixture and soldering method
By welding the FPC and pen clip together using a welding fixture, the problem of unstable connection between the FPC and pen clip is solved, achieving stable electrical conduction and high yield, which is suitable for electrostatic discharge testing of electronic devices.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHENZHEN XINWEI INTELLIGENT TECH CO LTD
- Filing Date
- 2023-12-26
- Publication Date
- 2026-07-21
AI Technical Summary
In the existing technology, the connection stability between FPC and pen clip is poor, which leads to poor contact of electronic devices in electrostatic discharge tests and low product yield.
A welding fixture is used to weld the FPC and pen clip together. Through the cooperation of the positioning module, the mounting module and the clamping module, the fixing part can stably conduct the pen clip and FPC. The floating component and magnetic component are used to achieve precise positioning and stable welding.
This improved the welding stability and conductivity between the FPC and the pen clip, enhanced the product yield, and ensured that the electronic device passed ESD testing.
Smart Images
Figure CN117773326B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of welding technology, specifically to a welding fixture and welding method. Background Technology
[0002] In electronic pen manufacturing, the pen clip and flexible printed circuit board (FPC) must undergo electrostatic discharge (ESD) testing after assembly to prevent damage to the electronic device from electrostatic discharge. Currently, methods such as applying conductive gel, attaching conductive foam, and assembling metal springs are commonly used to pass ESD tests. However, the stability of connecting the FPC and pen clip using these methods is poor, and poor contact is prone to occur between the FPC and pen clip, making it difficult to consistently pass ESD tests and resulting in a low product yield. Summary of the Invention
[0003] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a welding fixture that can weld the FPC and the pen clip together, which helps to maintain the conductivity between the FPC and the pen clip and improves the product yield.
[0004] This application also proposes a welding method.
[0005] According to a first aspect of this application, a welding fixture is used for welding a connector, an FPC, and a pen clip. The connector includes an auxiliary positioning part and a fixing part. The welding fixture includes a positioning module, an mounting module, and a clamping module. The positioning module includes a positioning base plate, a plug-in, and a fixing member. The positioning base plate is connected to the plug-in. The plug-in protrudes outward from the positioning base plate. The fixing member is connected to the positioning base plate. The fixing member forms a positioning groove around the plug-in for accommodating the pen clip. The plug-in is used to connect to one end of the FPC that has a plug-in connector.
[0006] The mounting module includes a mounting base and a floating assembly. The mounting base is connected to the positioning base and is located above the positioning base. The floating assembly is connected to the mounting base and is used to support the auxiliary positioning part so that the fixing part can extend into the welding area.
[0007] The clamping module includes a first clamping member disposed above the floating component. The first clamping member is driven to move toward the floating component to abut against the auxiliary positioning part and drive the fixing part to abut against the pen clip and the FPC. The first clamping member is provided with a relief groove that exposes the welding area.
[0008] The welding fixture according to the embodiments of this application has at least the following beneficial effects: the plug can be inserted into the plug on the FPC, the fixing member forms a positioning groove around the plug for accommodating the pen clip, the positioning groove is used to accommodate the pen clip, the plug and the fixing member cooperate to fix the pen clip and the FPC, the floating component can support the auxiliary positioning part, so that the fixing part extends into the welding area to conduct the pen clip and the FPC, the cover plate can open and close relative to the mounting seat, when the cover plate is fastened relative to the mounting seat, the cover plate can drive the pressing component to press the pen clip and the connector, the floating component can support the floating of the connector, which is beneficial to the connector better fit the pen clip and the FPC, which facilitates the improvement of welding stability, thereby achieving stable welding and improving the product yield.
[0009] According to some embodiments of this application, the clamping module is further provided with a second clamping member for abutting against the pen clip. The second clamping member is connected to the first clamping member and is used to hold the pen clip.
[0010] According to some embodiments of this application, the clamping module further includes a cover plate, a second clamping member is sleeved in the cover plate, a first clamping member is sleeved in the second clamping member, the cover plate can drive the first clamping member to press against the auxiliary positioning part, and can also drive the second clamping member to press against the pen clip.
[0011] According to some embodiments of this application, the clamping module further includes a first elastic member and a second elastic member. The first elastic member is disposed above the first clamping member, and the second elastic member is disposed above the second clamping member. The first clamping member is connected to the second clamping member through the first elastic member, and the second clamping member is connected to the cover plate through the second elastic member. The first elastic member can provide a downward elastic clamping force to the first clamping member, and the second elastic member can provide a downward elastic clamping force to the second clamping member.
[0012] According to some embodiments of this application, one end of the cover plate is rotatably connected to the mounting base, and the cover plate has a pressed state. When the cover plate is in the pressed state, the cover plate can drive the first pressing member to abut against the auxiliary positioning part, and the cover plate can also drive the second pressing member to abut against the pen clip.
[0013] The positioning module is also equipped with a snap-fit component that is movably connected to the positioning base plate. When the cover plate is switched to the pressing state, the snap-fit component can connect the cover plate and the positioning base plate so that the cover plate is kept in the pressing state.
[0014] According to some embodiments of this application, the mounting module further includes a pusher, the mounting base has a receiving cavity, the pusher is slidably connected to the mounting base in the receiving cavity, the pusher can move toward the fixing member to hold the pen clip, and the pusher cooperates with the fixing member to restrict the movement of the pen clip.
[0015] According to some embodiments of this application, a limiting part is provided in the receiving cavity, and a limiting groove is provided on the pushing member. The limiting part is placed in the limiting groove, and the limiting part can limit the movement stroke of the pushing member.
[0016] According to some embodiments of this application, the clamping module further includes a cover plate and a storage component. The cover plate is located above the floating component, and the storage component is connected to the cover plate and located above the cover plate for fixing the portion of the FPC exposed in the pen clip.
[0017] According to some embodiments of this application, the floating component includes a floating body and a positioning column, the floating component is elastically connected to the mounting base, the positioning column is fixedly connected to the mounting base, and the floating body and the positioning column are slidably connected.
[0018] The floating body can float up and down relative to the positioning post. The positioning post is used to insert into the positioning hole on the auxiliary positioning part. The positioning post and the floating body are used together to position the connector.
[0019] According to some embodiments of this application, the floating component has a first magnetic attraction part, which can attract a second magnetic attraction part on the auxiliary positioning part to fix the connector.
[0020] The welding method according to the second aspect of this application includes clamping, welding and separation steps:
[0021] The clamping process includes a pre-installed pen clip and an FPC. The connector includes an auxiliary positioning part and a fixing part that are connected to each other. The auxiliary positioning part is fixed so that the fixing part abuts against the pen clip and the FPC in the welding area. The fixing part is electrically conductive between the pen clip and the FPC.
[0022] Welding is performed on the contact point between the fixing part and the pen clip, and on the contact point between the fixing part and the FPC, so that the pen clip, FPC and fixing part are connected into a single structure.
[0023] Separate and remove the welded integrated structure, separate the fixing part from the auxiliary positioning part, and connect the pen clip and FPC through the fixing part.
[0024] The welding method according to the embodiments of this application has at least the following beneficial effects: the pen clip, FPC and connector are clamped together, and the fixing part is fixed so that the fixing part presses against the pen clip and FPC in the welding area, so that the fixing part can maintain the state of fitting the pen clip and FPC for welding. After welding is completed, the fixing part and the auxiliary positioning part are separated, and the structure of the fixing part, pen clip and FPC connected as one unit is retained. Using this welding method is beneficial to ensure the conduction between the pen clip and FPC through the fixing part, which helps the product pass the ESD test and improves the product yield.
[0025] According to some embodiments of this application, a calibration step is included before the clamping step. A base is installed on the laser welding equipment, a welding fixture is placed on the base, and a pen clip, an FPC and a connector are fixed on the welding fixture. The welding parameters of the laser welding equipment are adjusted according to the position of the fixed pen clip, FPC and connector.
[0026] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description
[0027] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein:
[0028] Figure 1 This is a schematic diagram of the welding fixture in an embodiment of this application;
[0029] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle;
[0030] Figure 3 This is a top view of the welding fixture according to an embodiment of this application;
[0031] Figure 4 for Figure 3 A magnified view of a portion of point B in the middle;
[0032] Figure 5 This is a schematic diagram of the pen clip and FPC in an embodiment of this application;
[0033] Figure 6 This is a cross-sectional view of the clamping module according to an embodiment of this application;
[0034] Figure 7 A cross-sectional view of the installation module in an embodiment of this application;
[0035] Figure 8 This is a schematic diagram of the structure in which the pen clip, FPC and fixing part are integrated in an embodiment of this application.
[0036] Reference numerals: Base 100, Placement slot 110;
[0037] Positioning module 200, positioning base plate 210, plug-in component 220, fixing component 230, positioning groove 231, snap-fit component 240;
[0038] Mounting module 300, mounting base 310, receiving cavity 311, limiting part 3111, floating component 320, floating body 321, first magnetic suction part 3211, positioning post 322, pushing part 330, limiting groove 331, welding area 340;
[0039] The clamping module 400, cover plate 410, relief groove 411, clamping assembly 420, first clamping member 421, second clamping member 422, first elastic member 423, second elastic member 424, and storage member 430 are included.
[0040] Pen clip 500;
[0041] FPC600, Connector 601;
[0042] The connector 700, the fixing part 710, the first welding position 711, the second welding position 712, the auxiliary positioning part 720, the positioning hole 721, and the second magnetic suction part 722. Detailed Implementation
[0043] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.
[0044] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0045] In the description of this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.
[0046] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.
[0047] In the description of this application, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0048] The embodiments of this application are described below with reference to the accompanying drawings:
[0049] refer to Figures 1 to 5 According to an embodiment of this application, a welding fixture is used to weld a connector 700, an FPC 600, and a pen clip 500. The connector 700 includes an auxiliary positioning part 720 and a fixing part 710, with the auxiliary positioning part 720 connected to the fixing part 710. The welding fixture includes a positioning module 200, a mounting module 300, and a clamping module 400. The positioning module 200 includes a positioning base plate 210, a connector 220, and a fixing member 230. The positioning base plate 210 is connected to the connector 220, and the connector 220 protrudes outward from the positioning base plate 210. The fixing member 230 is connected to the positioning base plate 210, and the fixing member 230 forms a positioning groove 231 around the connector 220 for accommodating the pen clip 500. The mounting module 300 includes a mounting seat 310 and a floating component 320. The mounting seat 310 is connected to the positioning base plate 210 and is located above the positioning base plate 210. The floating component 320 is connected to the mounting seat 310. The clamping module 400 includes a first clamping member 421 disposed above the floating assembly 320.
[0050] The connector 220 is used to connect the end of the FPC 600 with the connector 601 to position the FPC 600. The pen clip 500 is pre-assembled with the FPC 600. The FPC 600 is inserted into the pen clip 500 from the end with the cavity, so that the end of the FPC with the connector 601 is housed in the pen clip 500, while the end of the FPC without the connector 601 is exposed outside the pen clip 500. The connector 601 is vertically inserted into the connector 220, and the pen clip 500 is placed in the positioning groove 231. Therefore, the connector 220 can position the FPC, and the fixing member 230 can position the pen clip 500. Through the cooperation of the connector 220 and the fixing member 230, the FPC 600 and the pen clip 500 can have a definite position, and the movement of the FPC 600 and the pen clip 500 can be restricted to ensure the welding quality.
[0051] The floating assembly 320 supports the auxiliary positioning part 720 and positions it so that the fixing part 710 connected to the auxiliary positioning part 720 extends into the welding area 340. The fixing part 710 abuts against the pen clip 500 and the FPC 600 within the welding area 340. Simultaneously, the first clamping member 421 is driven to move toward the floating assembly 320 to abut against the auxiliary positioning part 720 and drive the fixing part 710 to remain abutting against the pen clip 500 and the FPC 600. The pen clip 500 and the FPC 600 are electrically connected through the fixing part 710. The first clamping member 421 has a relief groove 411 that protrudes from the welding area 340, facilitating laser welding equipment to weld the fixing part 710 against the pen clip 500 within the welding area 340. Welding is performed on the fixing part 710 at the point where it abuts against the FPC 600, thereby connecting the pen clip 500, the fixing part 710 and the FPC 600 into an integrated structure. Then, the integrated structure is removed from the welding fixture, the auxiliary positioning part 720 and the fixing part 710 are separated, and the integrated structure formed by connecting the pen clip 500, the fixing part 710 and the FPC 600 is retained. Through the above method, the fixing part 710 can be electrically connected to the FPC 600 and the pen clip 500, which helps the product pass the ESD test and improves the product yield.
[0052] It should be noted that the floating component 320 can float and support the auxiliary positioning part 720. The auxiliary positioning part 720 drives the fixing part 710 to float and adhere to the pen clip 500 and FPC600. Compared with the method of achieving electrical conduction between the pen clip 500 and FPC600 by assembling a metal spring, which relies on the elasticity of the metal spring to hold the pen clip 500 and FPC600 together, the elastic contact is prone to poor contact, resulting in excessive electrical resistance between the pen clip 500 and FPC600, making it unable to pass the ESD test. However, this welding fixture can achieve the floating and adhering of the fixing part 710 to the pen clip 500 and FPC600 for welding. The fixing part 710 ensures stable electrical conduction between the pen clip 500 and FPC600, reducing the electrical resistance between the pen clip 500 and FPC600, which is beneficial for the product to pass the ESD test and improve the product yield.
[0053] refer to Figures 1 to 4In some embodiments, the clamping module 400 is further provided with a second clamping member 422, which is connected to the first clamping member 421. The second clamping member 422 is used to hold the pen clip 500, the first clamping member 421 holds the auxiliary positioning part 720, and the second clamping member 422 holds the pen clip 500, thereby restricting the movement of the auxiliary positioning part 720 and the pen clip 500 in the vertical direction. The auxiliary positioning part 720 is also connected to the fixing part 710. Therefore, simultaneously clamping the auxiliary positioning part 720 and the pen clip 500 can ensure the fit between the fixing part 710 and the pen clip 500, avoid large deviations between the fixing part 710 and the pen clip 500, and help to further improve the welding accuracy.
[0054] refer to Figures 1 to 4 In some embodiments, the clamping module 400 further includes a cover plate 410, with a second clamping member 422 sleeved in the cover plate 410 and a first clamping member 421 sleeved in the second clamping member 422. Compared to external placement, the sleeved placement method is beneficial for making the structure of the clamping module 400 more compact. It should be understood that the cover plate 410 can simultaneously drive the first clamping member 421 and the second clamping member 422 to move towards the floating component 320. Under the drive of the cover plate 410, the first clamping member 421 corresponds to pressing against the auxiliary positioning part 720, and the second clamping member 422 corresponds to pressing against the pen clip 500. At the same time, the clearance groove 411 avoids the welding area 340, facilitating the welding operation. By simultaneously driving the first clamping member 421 and the second clamping member 422 through the cover plate 410, the pen clip 500 and the connector 700 are further positioned. Compared with the method of positioning the pen clip 500 and the connector 700 separately, it is beneficial to improve the clamping efficiency of the welding fixture, thereby improving the productivity of the product.
[0055] It should be noted that the above-mentioned arrangement can be understood as the cover plate 410 completely wrapping the second pressing member 422 in the vertical direction, and the second pressing member 422 completely wrapping the first pressing member 421 in the vertical direction. In the vertical direction, neither the first pressing member 421 nor the second pressing member 422 exceeds the thickness of the cover plate 410, thereby making the structure of the pressing module 400 more compact.
[0056] Alternatively, the above-mentioned arrangement can also be understood as the cover plate 410 partially wrapping the second clamping member 422 in the vertical direction, with the second clamping member 422 partially protruding from the surface of the cover plate 410. Correspondingly, the second clamping member 422 can also partially wrap the first clamping member 421 in the vertical direction, with the first clamping member 421 partially protruding from the surface of the second clamping member 422, so that different clamping sequences can be achieved when clamping the connector 700 and the pen clip 500.
[0057] refer to Figures 3 to 6In some embodiments, the clamping module 400 further includes a first elastic element 423 and a second elastic element 424. The first elastic element 423 is disposed above the first clamping element 421, and the second elastic element 424 is disposed above the second clamping element 422. The first clamping element 421 is connected to the second clamping element 422 through the first elastic element 423. The first clamping element 421 is sleeved in the second clamping element 422. The second clamping element 422 is sleeved in the cover plate 410. The second clamping element 422 is connected to the cover plate 410 through the second elastic element 424. The first clamping member 421 is provided with a downward elastic clamping force by the second elastic member 424, and the second clamping member 422 is provided with a downward elastic clamping force by the second clamping member 424. This allows the first clamping member 421 to elastically resist the auxiliary positioning part 720. The auxiliary positioning part 720 can float up and down under the combined resistance of the floating component 320 and the first clamping member 421. This allows the auxiliary positioning part 720 to drive the fixing part 710 to float up and down, better fitting the pen clip 500 and FPC 600. The second clamping member 422 elastically resists the pen clip 500's up and down movement. Therefore, it ensures a suitable fit between the fixing part 710 and the pen clip 500 during welding, reduces the electrical resistance between the fixing part 710 and the pen clip 500, and improves welding quality to pass ESD testing.
[0058] refer to Figures 1 to 4 In some embodiments, one end of the cover plate 410 is rotatably connected to the mounting base 310. The cover plate 410 is in a pressed state. When the cover plate 410 is in the pressed state, the first pressing member 421 sleeved in the cover plate 410 abuts against the auxiliary positioning part 720. The auxiliary positioning part 720 drives the fixing part 710 to press the pen clip 500 and FPC 600. The second pressing member 422 sleeved in the cover plate 410 abuts against the pen clip 500, restricting the movement of the pen clip 500 in the vertical direction. The positioning module 200 is also provided with a snap-fit member 240 that is movably connected to the positioning base plate 210. It should be understood that when the cover plate 410 is switched to the pressed state, the snap-fit member 240 connects the cover plate 410 and the positioning base plate 210, so that the cover plate 410 is kept in the pressed state, thereby achieving stable positioning of the connector 700 and the pen clip 500.
[0059] The cover plate 410 also has a released state. When the cover plate 410 is in the released state, the first clamping member 421 sleeved in the cover plate 410 disengages from contact with the auxiliary positioning part 720, and the second clamping member 422 sleeved in the cover plate 410 also disengages from contact with the pen clip 500. It should be understood that when the cover plate 410 is switched to the released state, the snap-fit member 240 connects to the positioning base plate 210, the cover plate 410 disengages from the snap-fit member 240, and the cover plate 410 can rotate relative to the mounting base 310, which facilitates the clamping of the pen clip 500, FPC 600 and connector 700.
[0060] For example, the snap-fit 240 and the positioning base plate 210 can be rotatably connected. The snap-fit 240 can rotate relative to the positioning base plate 210 when the cover plate 410 presses against the mounting base 310, so that the cover plate 410 and the mounting base 310 are held against each other and the cover plate 410 is kept in a pressed state. The snap-fit 240 can release the cover plate 410 by rotating relative to the positioning base plate 210, so that the cover plate 410 is switched to the released state.
[0061] Alternatively, the snap-fit connector 240 and the positioning base plate 210 can also be slidably connected. The snap-fit connector 240 can move closer to the cover plate 410 when the cover plate 410 presses against the mounting base 310, thus limiting the relative movement between the cover plate 410 and the mounting base 310. This keeps the cover plate 410 in a pressed state. Correspondingly, to switch the cover plate 410 to a released state, the snap-fit connector 240 must first be driven to move away from the cover plate 410 to release it. This allows for quick assembly and disassembly of the pen clip 500, FPC 600, and connector 700, improving welding efficiency.
[0062] refer to Figures 3 to 7 In some embodiments, the mounting module 300 further includes a pusher 330. The mounting base 310 has a receiving cavity 311. The pusher 330 is slidably connected to the mounting base 310 within the receiving cavity 311. The fixing member 230 forms a positioning groove 231 around the plug-in member 220 for receiving the pen clip 500. The pen clip 500 is received in the positioning groove 231. The pusher 330 can move towards the fixing member 230 to hold the pen clip 500. The pusher 330 holds the pen clip 500, causing the pen clip 500 to fit against the fixing member 230, thus further positioning the pen clip 500. Therefore, through the cooperation of the fixing member 230 and the pusher 330, the movement of the pen clip 500 can be restricted, thereby further improving the positioning accuracy of the pen clip 500 and ensuring the welding stability between the steel sheet structure and the pen clip 500.
[0063] Specifically, the pusher 330 and the mounting base 310 can be connected via guide rails, springs, or other means. Taking the connection via springs as an example, the pusher 330 abuts against the mounting base 310 via the spring. Under the action of the spring, the pusher 330 can move closer to or away from the fixing member 230. When the pusher 330 moves away from the fixing member 230, the pen clip 500 can be placed into the positioning groove 231 for pre-positioning. When the pusher 330 moves closer to the fixing member 230, the pusher 330 abuts against the pen clip 500, causing the pen clip 500 to be close to the fixing member 230, thus achieving the positioning of the pen clip 500. Therefore, the elastic abutment positioning method enables the pen clip 500 to absorb vibration and impact during welding, which is beneficial to improving welding quality and thus achieving stable electrical conduction between the pen clip 500 and the FPC600.
[0064] refer to Figures 3 to 7In some embodiments, the mounting base 310 is provided with a receiving cavity 311, and a limiting part 3111 is provided in the receiving cavity 311. The pushing member 330 is provided with a limiting groove 331. The pushing member 330 is slidably connected to the mounting base 310 in the receiving cavity 311. The limiting part 3111 is placed in the limiting groove 331. The pushing member 330 can approach or move away from the fixing member 230 to fix or release the pen clip 500. The limiting part 3111 can limit the movement stroke of the pushing member 330 relative to the fixing member 230, avoid the pushing member 330 abutting the plug-in member 220, and help ensure the positioning accuracy of the plug-in member 220.
[0065] refer to Figures 1 to 4 In some embodiments, the clamping module 400 further includes a cover plate 410 and a housing 430. The cover plate 410 is located above the floating assembly 320, and the housing 430 is connected to the cover plate 410 and located above the cover plate 410. The housing 430 is used to fix the part of the FPC 600 exposed in the pen clip 500, so that the part of the FPC 600 exposed in the pen clip 500 avoids the welding area 340, preventing the FPC 600 from being burned or burned through during welding, thereby improving the product yield.
[0066] refer to Figures 1 to 4 In some embodiments, the floating assembly 320 includes a floating body 321 and a positioning post 322. The floating body 321 is elastically connected to the mounting base 310, the positioning post 322 is fixedly connected to the mounting base 310, and the floating body 321 and the positioning post 322 are slidably connected, so that the floating body 321 can float up and down relative to the positioning post 322. The positioning post 322 is used to pass through the positioning hole 721 on the auxiliary positioning part 720. The positioning post 322 and the floating body 321 are used together to position the connector 700. By using the positioning post 322 and the positioning part to position the auxiliary positioning part 720 together, it is possible to ensure that the fixing part 710 fits the pen clip 500 and the FPC 600 more accurately within the welding area 340, which is beneficial to improving the welding quality.
[0067] refer to Figures 1 to 4 In some embodiments, the floating component 320 has a first magnetic attraction portion 3211, which can attract a second magnetic attraction portion 722 on the auxiliary positioning portion 720 to fix the connector 700, which is beneficial for better fit between the floating component 320 and the connector 700. It should be noted that the first magnetic attraction portion 3211 can be part of the floating component 320, or the entire floating component 320 can be used as the first magnetic attraction portion 3211. The second magnetic attraction portion 722 can be part of the connector 700, or the entire connector 700 can be made of a magnetically attractive material, thereby realizing the attraction of the floating component 320 to the connector 700.
[0068] For example, the connector 700 is made of a magnetically attractable metal material. The connector 700 serves as the second magnetic attraction part 722. The floating component 320 is provided with a first magnetic attraction part 3211. While supporting the connector 700, the floating component 320 attracts the connector 700 through the first magnetic attraction part 3211, which can further stabilize the support of the connector 700 and improve the welding quality.
[0069] refer to Figures 1 to 8 According to the welding method of the second aspect of this application, the welding method includes clamping, welding and separation steps. In the clamping step, the pen clip 500 and FPC 600 are pre-assembled. One end of FPC 600 with a connector 601 is housed in the pen clip 500 and can abut against the pen clip 500. The other end of FPC 600 without the connector 601 is exposed outside the pen clip 500. The connector 700 includes an auxiliary positioning part 720 and a fixing part 710 connected to each other. By fixing the auxiliary positioning part 720, the fixing part 710 abuts against the pen clip 500 and FPC 600. The fixing part 710 can simultaneously fit the pen clip 500 and FPC 600, thereby completing the positioning and clamping of the pen clip 500, FPC 600 and connector 700.
[0070] In the welding step, the contact point between the fixing part 710 and the pen clip 500 is designated as the first welding position 711, and the contact point between the fixing part 710 and the FPC 600 is designated as the second welding position 712. The first welding position 711 and the second welding position 712 are welded respectively, so that the fixing part 710, the pen clip 500 and the FPC 600 are connected as a whole structure. The pen clip 500 and the FPC 600 are electrically connected through the fixing part 710. It should be noted that by making the pen clip 500 and the FPC 600 electrically connected through the fixing part 710, the static electricity accumulated on the FPC 600 can be dispersed along the electrical conduction path, thereby reducing damage to electronic components. For example, in ESD testing, after the pen clip 500 and the FPC 600 are electrically connected, the standard resistance value of its conduction path should be less than 4Ω, so as to facilitate the dispersion of static charge along the conduction path and reduce the accumulation of static charge.
[0071] refer to Figures 1 to 4 In some embodiments, a calibration step is included before the clamping step. This is achieved by installing a base 100 on the laser welding equipment. The base 100 has a placement groove 110 that engages with a positioning substrate 210. The positioning substrate 210 and the base 100 are detachably connected, allowing for quick separation. Therefore, after positioning the base 100, the positioning substrate 210 can be quickly placed in the placement groove 110, thus improving welding efficiency.
[0072] It should be noted that the positioning substrate 210, together with the plug-in component 220, the fixing component 230, the mounting module 300 and the clamping module 400, constitute a welding fixture. The welding fixture is fixed with the pen clip 500, the FPC 600 and the connector 700. The welding fixture with the pen clip 500, the FPC 600 and the connector 700 fixed is placed in the placement slot 110. The welding parameters such as the position and focal length of the CCD lens of the laser welding equipment, the welding power, the welding time and the welding position of the welding equipment are adjusted to improve the welding accuracy.
[0073] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application. Furthermore, unless otherwise specified, the embodiments and features described in the embodiments of this application can be combined with each other.
Claims
1. A welding fixture for welding connectors, FPCs, and pen clips, said connectors comprising an auxiliary positioning portion and a fixing portion, characterized in that, include: A positioning module includes a positioning base plate, a connector, and a fixing member. The positioning base plate is connected to the connector, the connector protrudes outward from the positioning base plate, and the fixing member is connected to the positioning base plate. The fixing member forms a positioning groove around the connector for accommodating a pen clip, and the connector is used to connect to one end of the FPC that has a connector. The mounting module includes a mounting base and a floating assembly. The mounting base is connected to the positioning base and is located above the positioning base. The floating assembly includes a floating body and a positioning post. The floating assembly is elastically connected to the mounting base, the positioning post is fixedly connected to the mounting base, and the floating body is slidably connected to the positioning post. The floating body can float up and down relative to the positioning post. The positioning post is used to pass through a positioning hole on the auxiliary positioning part. The positioning post and the floating body are used together to position the connector. The floating assembly is used to support the auxiliary positioning part so that the fixing part extends into the welding area. The clamping module includes a first clamping member disposed above the floating component. The first clamping member is driven to move toward the floating component to abut against the auxiliary positioning part and drive the fixing part to abut against the pen clip and the FPC. The first clamping member is provided with a relief groove that exposes the welding area.
2. The welding fixture according to claim 1, characterized in that, The clamping module is further provided with a second clamping member for abutting against the pen clip. The second clamping member is connected to the first clamping member and is used to hold the pen clip.
3. The welding fixture according to claim 2, characterized in that, The clamping module further includes a cover plate, the second clamping member is sleeved in the cover plate, the first clamping member is sleeved in the second clamping member, the cover plate can drive the first clamping member to press against the auxiliary positioning part, and can also drive the second clamping member to press against the pen clip.
4. The welding fixture according to claim 3, characterized in that, The clamping module further includes a first elastic element and a second elastic element. The first elastic element is disposed above the first clamping element, and the second elastic element is disposed above the second clamping element. The first clamping element is connected to the second clamping element through the first elastic element, and the second clamping element is connected to the cover plate through the second elastic element. The first elastic element can provide a downward elastic clamping force to the first clamping element, and the second elastic element can provide a downward elastic clamping force to the second clamping element.
5. The welding fixture according to claim 3, characterized in that, One end of the cover plate is rotatably connected to the mounting base. The cover plate has a pressed state. When the cover plate is in the pressed state, the cover plate can drive the first pressing member to abut against the auxiliary positioning part. The cover plate can also drive the second pressing member to abut against the pen clip. The positioning module is further provided with a snap-fit component that is movably connected to the positioning base plate. When the cover plate is switched to the pressing state, the snap-fit component can connect the cover plate and the positioning base plate so that the cover plate is kept in the pressing state.
6. The welding fixture according to claim 1, characterized in that, The mounting module also includes a pusher, and the mounting base has a receiving cavity. The pusher is slidably connected to the mounting base in the receiving cavity. The pusher can move toward the fixing member to hold the pen clip. The pusher cooperates with the fixing member to restrict the movement of the pen clip.
7. The welding fixture according to claim 6, characterized in that, The cavity is provided with a limiting part, and the pushing member is provided with a limiting groove. The limiting part is placed in the limiting groove, and the limiting part can limit the movement stroke of the pushing member.
8. The welding fixture according to claim 1, characterized in that, The clamping module also includes a cover plate and a storage component. The cover plate is located above the floating component, and the storage component is connected to the cover plate. The storage component is located above the cover plate and is used to fix the part of the FPC exposed by the pen clip.
9. The welding fixture according to claim 1, characterized in that, The floating component has a first magnetic attraction part, which can attract the second magnetic attraction part on the auxiliary positioning part to fix the connector.
10. A welding method, characterized in that, Welding is performed using the welding fixture described in any one of claims 1 to 9, and the welding method includes the following steps. The pen clip and FPC are pre-assembled. The connector includes an auxiliary positioning part and a fixing part that are connected to each other. The auxiliary positioning part is fixed so that the fixing part abuts against the pen clip and the FPC in the welding area. The fixing part can electrically connect the pen clip and the FPC. Welding is performed on the contact point between the fixing part and the pen clip, and on the contact point between the fixing part and the FPC, so that the pen clip, the FPC and the fixing part are connected into an integral structure. Separate and remove the welded integral structure, separate the fixing part from the auxiliary positioning part, and connect the pen clip and the FPC through the fixing part.
11. The welding method according to claim 10, characterized in that, Before the clamping step, a calibration step is also included, in which a base is installed on the laser welding equipment, a welding fixture is placed on the base, the pen clip, the FPC and the connector are fixed on the welding fixture, and the welding parameters of the laser welding equipment are adjusted according to the fixed positions of the pen clip, the FPC and the connector.