A cable and circuit board fixing device

Abstract

The utility model relates to a kind of fixed connection device of cable and circuit board, it includes synchronous movement mechanism, glue dispensing assembly and at least one welding assembly, the synchronous movement mechanism drives glue dispensing assembly and welding assembly synchronous movement;The welding assembly includes first telescopic component and welding head, and the first telescopic component drives welding head telescopic movement;Glue dispensing assembly includes second telescopic component and glue dispensing valve, and the second telescopic component drives glue dispensing valve telescopic movement;The telescopic direction of welding head and the telescopic direction of glue dispensing valve are mutually parallel.The utility model device structure is compact, and it is smaller to occupy space, also can be conducive to the design of corresponding mobile control program, welding, glue dispensing operation switching is faster, it is beneficial to improve overall processing efficiency.In addition, by glue dispensing, the connection strength of wire harness and circuit board can be increased, guarantee the connection reliability of wire harness and circuit board.

Description

Technical Field

[0001] This utility model relates to the field of wire harness processing technology, and in particular to a device for fixing and connecting cables and circuit boards. Background Technology

[0002] Connectors typically include a cable and connectors fixed to both ends of the cable. These connectors can be circuit boards or plugs. Soldering is one of the common methods for connecting cables to circuit boards 74. A single cable can integrate multiple wire harnesses 73. When a wire harness 73 has many wires that need to be soldered to the circuit board 74, the operation becomes quite cumbersome, for example... Figure 1 and Figure 2 As shown, a high-speed cable 72 contains nine wire bundles 73, both ends of which need to be connected to a circuit board 74. Each wire bundle 73 has four conductors; the two middle conductors are core wires, and the two outer conductors are ground wires (the core wires and ground wires have different diameters). Before soldering, the conductors need to be stripped (inner sheath 78 removed) to expose the conductors at the ends. Because the exposed conductors (referred to as solder wires 75) are relatively thin, tweezers are usually used to separate them and press the solder wires 75 against the corresponding pads 76 on the circuit board 74 for soldering. This step is currently mostly done manually, which is inefficient, and manual soldering is more prone to soldering quality problems. In addition, when the solder wires 75 are thin, only the solder joint between the solder wires 75 and the pads 76 serves as the connection point between the wire bundle 73 and the circuit board 74, resulting in a relatively weak connection strength. Under stress on the high-speed cable 72, this may cause the solder joint to break, leading to a malfunction. Utility Model Content

[0003] The purpose of this utility model is to provide a fixed connection device for cables and circuit boards, which can reliably connect wire harnesses to circuit boards, and has a compact structure, occupies little space, and is easy to arrange.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A cable-to-circuit board fixing connection device includes a synchronous moving mechanism, a dispensing assembly, and at least one welding assembly. The synchronous moving mechanism drives the dispensing assembly and the welding assembly to move synchronously. The welding assembly includes a first telescopic component and a welding head, and the first telescopic component drives the welding head to move telescopically. The dispensing assembly includes a second telescopic component and a dispensing valve, and the second telescopic component drives the dispensing valve to move telescopically. The telescopic direction of the welding head is parallel to the telescopic direction of the dispensing valve.

[0005] With the above setup, integrating the dispensing and welding components allows for a simplified device structure, resulting in a more compact design and smaller footprint. It also facilitates the design of corresponding motion control programs, enabling faster switching between welding and dispensing operations and improving overall processing efficiency. Furthermore, the independent operation of the welding components effectively handles the welding of mixed wire harnesses (i.e., harnesses containing wires of different diameters) to circuit boards, ensuring both welding quality and efficiency. Additionally, dispensing increases the connection strength between the wire harness and the circuit board, ensuring reliable connection reliability.

[0006] Preferably, the synchronous movement mechanism is a one-axis movement module, a two-axis movement platform, a three-axis movement platform, or a robotic arm. This configuration allows for the selection of an appropriate synchronous movement mechanism based on actual conditions.

[0007] Preferably, the synchronous movement mechanism is a two-axis moving platform, which includes a first horizontal moving module and a first vertical moving module. The first horizontal moving module drives the first vertical moving module to move horizontally, and the first vertical moving module drives the dispensing assembly and the welding assembly to move up and down synchronously. The extension and retraction direction of the welding head is vertical. This type of synchronous movement mechanism has a simple structure and can adapt to most application scenarios.

[0008] Preferably, the welding head has a contact electrode, and the contact electrode is detachably connected to the welding head; the contact electrodes of the welding heads corresponding to different welding components are similar or different; the bottom of the contact electrode is provided with a slot for limiting the welding wire. This configuration can effectively handle the welding of mixed wire harnesses (i.e., wire harnesses containing multiple wires of different diameters). By providing a slot at the bottom of the contact electrode of the welding head, the welding wire can be placed in the slot by moving the welding head downwards. Then, when the welding head moves horizontally, it can drive the welding wire to move, thereby achieving precise alignment of the welding wire with its corresponding pad. During the movement of the welding wire, the welding head is not powered. After the welding wire is aligned with its corresponding pad, the welding head is powered on to achieve welding.

[0009] Preferably, both the first and second telescopic components are motor-driven linear motion modules. This configuration allows for higher precision telescopic movement of the welding head and dispensing valve, more convenient adjustment of the telescopic length, and better adaptation to different applications.

[0010] Preferably, the contacts of the welding head and the dispensing port of the dispensing valve are on the same vertical plane. This arrangement facilitates control.

[0011] Preferably, the dispensing assembly further includes a curing lamp, and the second telescopic assembly drives the dispensing valve and the curing lamp to move synchronously. By setting the curing lamp, curing can be performed immediately after dispensing, avoiding glue displacement during unloading and thus ensuring dispensing quality.

[0012] Preferably, the system also includes a controller, and the synchronous moving mechanism, welding assembly, and dispensing assembly are all connected to the controller. By setting the controller, continuous automatic operation of welding, dispensing, and curing can be achieved, thereby improving work efficiency.

[0013] Preferably, the device further includes a material loading mechanism, which includes a tilting component and a platform for placing the aligned wire harness and circuit board. The tilting component drives the platform to tilt at a set angle. By tilting the platform with the tilting component during dispensing, the adhesive extruded from the dispensing valve flows in the tilting direction, preventing adhesive from flowing to the solder joints between the solder wire and the solder pad.

[0014] Preferably, the tilting assembly includes a base plate, a first motor, a screw, a guide rail, a slider, a swing arm, and a support frame. The first motor and the guide rail are locked to the base plate. The screw is rotatably connected to the base plate. The guide rail and the screw are parallel to each other. The slider is slidably connected to the guide rail and threadedly connected to the screw. The first motor drives the screw to rotate. One end of the support frame is rotatably connected to the base plate. One end of the swing arm is rotatably connected to the support frame, and the other end of the swing arm is rotatably connected to the slider. The platform is locked to the support frame, or the support frame is used as the platform. This configuration provides a large tilt angle adjustment range, high precision, and stable tilting of the platform, while also having a simple structure.

[0015] This utility model has the following beneficial effects: 1. This utility model integrates the dispensing and welding components, which simplifies the device structure, improves compactness, reduces space occupation, and facilitates the design of corresponding motion control programs. It also allows for faster switching between welding and dispensing operations, improving overall processing efficiency. Furthermore, the welding components operate independently, effectively handling the welding of mixed wire harnesses (i.e., harnesses containing wires of different diameters) to circuit boards, ensuring both welding quality and efficiency. In addition, dispensing increases the connection strength between the wire harness and the circuit board, ensuring reliable connection, and also improves SI (Installation Separation) performance.

[0016] 2. By setting a slot on the contact electrode to restrict the welding wire, and cooperating with a synchronous moving mechanism to move the welding head, the welding wire can be moved, thereby calibrating the alignment relationship between the welding wire and its corresponding pad, thus ensuring accurate welding. Attached Figure Description Figure 1This is a top view showing the connection between the wire harness and the circuit board.

[0017] Figure 2 This is a schematic diagram (side view) showing the connection between the wire harness and the circuit board.

[0018] Figure 3 This is a schematic diagram of the present invention.

[0019] Figure 4 This is a schematic diagram from another perspective of the present invention.

[0020] Figure 5 This is a schematic diagram of the tilting component.

[0021] Figure 6 This is a schematic diagram showing another perspective of the tilted component.

[0022] Figure 7 This is one of the schematic diagrams of the first vertical moving module, welding assembly, and dispensing assembly.

[0023] Figure 8 This is the second schematic diagram of the first vertical moving module, welding assembly, and dispensing assembly.

[0024] Figure 9 This is the third schematic diagram of the first vertical moving module, welding assembly, and dispensing assembly.

[0025] Figure 10 This is a schematic diagram of the contact electrode and the bonding wire mating.

[0026] Figure 11 This is a schematic diagram showing the location of the adhesive application on the wire harness and the circuit board.

[0027] Explanation of symbols for main components: Inclined assembly 11, platform 12, base plate 13, first motor 14, screw 15, guide rail 16, slider 17, swing arm 18, support frame 19, second horizontal moving module 1a; First horizontal moving module 21, first vertical moving module 22, first telescopic component 23, welding head 24, contact electrode 25, second telescopic component 26, curing lamp 27, dispensing valve 28, and slot 29. Fixture 31, high-speed cable 32, wire harness 33, circuit board 34, solder wire 35, solder pad 36, protective layer end position 77, inner sheath 78. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0029] like Figure 3-11As shown, this utility model discloses a fixed connection device for cables and circuit boards, which includes a controller, a synchronous moving mechanism, a dispensing assembly, at least one welding assembly, and a material loading mechanism. The synchronous moving mechanism, the dispensing assembly, the welding assembly, and the material loading mechanism are all connected to the controller.

[0030] like Figure 3-6 As shown, the loading mechanism includes a tilting assembly 11 and a platform 12. The platform 12 is used to place the aligned wire harness 33 and circuit board 34. The aligned wire harness 33 and circuit board 34 can be found in [reference needed]. Figure 1 and Figure 2 The jig 31 can be used to place and limit the alignment of the wire harness 33 and circuit board 34, which helps to improve work efficiency. The jig 31 is not the focus of this case and will not be described in detail. In addition, a second horizontal moving module 1a can be set to drive the material loading mechanism to move, so as to facilitate loading and unloading. The second horizontal moving module 1a is connected to the controller.

[0031] like Figure 5-6 As shown, the tilting component 11 is used to drive the stage 12 to tilt at a set angle. During dispensing, tilting the stage 12 by the tilting component 11 allows the adhesive extruded from the dispensing valve 28 to flow along the tilt direction, preventing the adhesive from flowing to the solder joint between the solder wire 35 and the solder pad 36. Specifically, the tilting component 11 includes a base plate 13, a first motor 14, a screw 15, a guide rail 16, a slider 17, a swing arm 18, and a support frame 19. The first motor 14 and the guide rail 16 are locked to the base plate 13, and the screw 15 is rotatably connected to the base plate 13. The guide rail 16 and the screw 15 are arranged parallel to each other. The slider 17 is slidably connected to the guide rail 16, and the slider 17 is also threadedly connected to the screw 15. The first motor 14 drives the screw 15 to rotate. One end of the support frame 19 is rotatably connected to the base plate 13, one end of the swing arm 18 is rotatably connected to the support frame 19, and the other end of the swing arm 18 is rotatably connected to the slider 17. In this way, as the first motor 14 operates, the support frame 19 can be gradually tilted, resulting in good stability. The platform 12 is locked onto the support frame 19, and alternatively, the support frame 19 can be used directly as the platform 12.

[0032] A synchronous moving mechanism is used to drive the dispensing assembly and the welding assembly to move synchronously. The synchronous moving mechanism can be a one-axis moving module, a two-axis moving platform, a three-axis moving platform, or a robotic arm, etc., and can be adjusted according to the actual application. As a preferred embodiment, the synchronous moving mechanism is a two-axis moving platform, which includes a first horizontal moving module 21 and a first vertical moving module 22. The first horizontal moving module 21 drives the first vertical moving module 22 to move horizontally, and the first vertical moving module 22 drives the dispensing assembly and the welding assembly to move up and down synchronously. Figure 3 and Figure 4As shown. Both the first horizontal moving module 21 and the first vertical moving module 22 are motor-based linear moving modules, and their structure is existing technology. They typically also include a slide rail, a threaded rod, and a carriage. The slide rail and the threaded rod are parallel to each other. The carriage is slidably connected to the slide rail and is also threadedly connected to the threaded rod. The motor drives the threaded rod to rotate. When the motor is running, the carriage can slide along the length of the slide rail. As an example, the first horizontal moving module 21 drives the first vertical moving module 22 to move horizontally, that is, the first vertical moving module 22 is mounted on the carriage corresponding to the first horizontal moving module 21.

[0033] like Figure 7-9 As shown, the welding assembly includes a first telescopic component 23 and a welding head 24. The first telescopic component 23 drives the welding head 24 to telescopically move in a vertical direction. The first telescopic component 23 is a motor-based linear motion module, which will not be described in detail here. Specifically, the welding head 24 has a contact electrode 25, and the contact electrode 25 is detachably connected to the welding head 24. The contact electrodes 25 of the welding heads 24 differ for different welding assemblies to accommodate different welding wires 35. In this case, the welding assembly is provided with two sets, corresponding to... Figure 1 and Figure 2 Two different wire diameters of welding wire 35.

[0034] In particular, such as Figure 10 As shown, a slot 29 for limiting the bonding wire 35 is provided at the bottom of the contact electrode 25 of the welding head 24. When the contact electrode 25 is aligned with a bonding wire 35, the welding head 24 presses down, and the bonding wire 35 can fall into the slot 29. At this time, the bonding wire 35 is lightly pressed on the circuit board 34. Then, the welding head 24 or the circuit board 34 is driven to move horizontally, which can realize the alignment of the bonding wire 35 with its corresponding pad 36. After alignment, the welding head 24 is powered on to realize the welding of the two.

[0035] like Figure 7-9 As shown, the dispensing assembly includes a second telescopic component 26, a dispensing valve 28, and a curing lamp 27. The second telescopic component 26 drives the dispensing valve 28 and the curing lamp 27 to move synchronously in a vertical direction. The second telescopic component 26 is a motor-based linear motion module, which will not be described in detail. The adhesive extruded by the dispensing valve 28 solidifies rapidly under the illumination of the curing lamp 27. For ease of movement control, it is preferable that the contacts of the welding head 24 (i.e., contact electrode 25) and the dispensing outlet of the dispensing valve 28 are on the same vertical plane. The dispensing position of the dispensing valve 28 is shown in [reference needed]. Figure 11In the dashed box, the adhesive application area extends from the protective layer end 37 of the wire harness to the edge of the solder joint between the wire 35 and the pad 36. The inner sheath 38 (i.e., the wire insulation) is also covered with adhesive. Due to the inherent structure of each pair of wires, the conductor (solder wire 35) is eventually exposed through laser repositioning or other methods. The inner sheath 38 is slightly longer than the protective layer (usually aluminum foil) of the wire harness 33. This will increase the impedance value during SI performance testing. By using UV adhesive to cover the area between the protective layer end 37 and the inner sheath 38 of the wire harness 33, as well as the unsoldered solder wire 35, SI performance can be improved.

[0036] The key to this invention lies in integrating the dispensing and welding components, which simplifies the device structure, improves compactness, reduces space requirements, and facilitates the design of corresponding motion control programs. This allows for quicker switching between welding and dispensing operations, improving overall processing efficiency. Furthermore, the independent operation of the welding components effectively handles the welding of mixed wire harnesses 33 (i.e., wire harnesses 33 containing conductors of different diameters) to the circuit board 34, ensuring both welding quality and efficiency. Dispensing increases the connection strength between the wire harness 33 and the circuit board 34, ensuring reliable connection and improving SI performance. Additionally, by using a material-carrying mechanism to position the wire harness 33 and the circuit board 34, and tilting the stage 12 during dispensing, the welding points on the circuit board 34 are kept clean.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for fixing and connecting cables to circuit boards, characterized in that: The device includes a synchronous moving mechanism, a dispensing assembly, and at least one welding assembly. The synchronous moving mechanism drives the dispensing assembly and the welding assembly to move synchronously. The welding assembly includes a first telescopic component and a welding head, and the first telescopic component drives the welding head to move telescopically. The dispensing assembly includes a second telescopic component and a dispensing valve, and the second telescopic component drives the dispensing valve to move telescopically. The telescopic direction of the welding head is parallel to the telescopic direction of the dispensing valve.

2. The cable-to-circuit board fixing connection device according to claim 1, characterized in that: The synchronous movement mechanism is a one-axis movement module, a two-axis movement platform, a three-axis movement platform, or a robotic arm.

3. The cable-to-circuit board fixing connection device according to claim 2, characterized in that: The synchronous moving mechanism is a two-axis moving platform, which includes a first horizontal moving module and a first vertical moving module. The first horizontal moving module drives the first vertical moving module to move horizontally, and the first vertical moving module drives the dispensing assembly and the welding assembly to move up and down synchronously. The extension and retraction direction of the welding head is vertical.

4. The cable-to-circuit board fixing connection device according to claim 1, characterized in that: The welding head has a contact electrode, and the contact electrode is detachably connected to the welding head; the contact electrodes of the welding heads corresponding to different welding components are similar or different; the bottom of the contact electrode is provided with a slot for limiting the welding wire.

5. The cable-to-circuit board fixing connection device according to claim 1, characterized in that: Both the first telescopic component and the second telescopic component are linear motion modules based on motors.

6. The cable-to-circuit board fixing connection device according to claim 1, characterized in that: The contact points of the welding head and the dispensing port of the dispensing valve are on the same vertical plane.

7. The cable-to-circuit board fixing connection device according to claim 1, characterized in that: The dispensing assembly also includes a curing lamp, and the second telescopic assembly drives the dispensing valve and the curing lamp to move synchronously.

8. The cable-to-circuit board fixing connection device according to claim 1, characterized in that: It also includes a controller, and the synchronous movement mechanism, welding assembly and dispensing assembly are all connected to the controller.

9. The cable-to-circuit board fixing connection device according to claim 1, characterized in that: It also includes a material loading mechanism, which includes a tilting component and a platform for placing aligned wire harnesses and circuit boards. The tilting component drives the platform to tilt at a set angle.

10. The cable-to-circuit board fixing connection device according to claim 9, characterized in that: The tilting assembly includes a base plate, a first motor, a screw, a guide rail, a slider, a swing arm, and a support frame. The first motor and the guide rail are locked to the base plate. The screw is rotatably connected to the base plate. The guide rail and the screw are parallel to each other. The slider is slidably connected to the guide rail and threadedly connected to the screw. The first motor drives the screw to rotate. One end of the support frame is rotatably connected to the base plate. One end of the swing arm is rotatably connected to the support frame, and the other end of the swing arm is rotatably connected to the slider. The platform is locked to the support frame, or the support frame is used as a platform.

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