An assembly structure of a twisted pair cable and an electrical connector and a welding method

Abstract

The application relates to the technical field of cable welding, assembling and vibration and rotating speed interference, and discloses an assembling structure and welding method of a twisted pair cable and an electric connector, wherein the electric connector is clamped through an assembling clamp, the assembling clamp comprises a first plate body, a second plate body and a clamping assembly, the clamping assembly is arranged on the first plate body, the electric connector is clamped on the clamping assembly, and the twisted pair cable is welded on the pin of the electric connector, so that the cable assembling quality is improved, the stability of the cable assembling assembly assembling is enhanced, and the vibration and rotating speed feedback signal fluctuation faults caused by the cable assembling quality are avoided.

Description

Technical Field

[0001] This invention relates to the fields of cable welding, assembly, and vibration and speed interference technology, specifically to an assembly structure and welding method for a twisted pair cable and an electrical connector. Background Technology

[0002] Twisted-pair cable is a transmission medium formed by encapsulating one or more pairs of twisted wires in an insulating jacket. Twisted-pair cables can prevent electromagnetic signal interference and leakage, and are widely used in the aerospace and aviation industries. Various cables on aircraft and ships are important components of signal transmission, and suppressing electromagnetic interference is a crucial technical requirement for all signal cables. Properly addressing the insulation issue when connecting twisted-pair cables to electrical connectors is an effective method for suppressing electromagnetic interference.

[0003] During the welding of twisted-pair cables to electrical connectors, if there is no clamping fixture to secure the connector, one operator must hold the connector in place while another operator performs the welding. This poses a safety hazard and is inefficient.

[0004] The speed and vibration cables use twisted-pair cables, which can effectively suppress interference. However, if the inner and outer shielding layers cannot be completely isolated during assembly, the insulation performance of the cable assembly will be substandard. At the same time, the vibration and speed feedback signals will fluctuate, affecting the engine operation and causing a malfunction and shutdown in severe cases. Summary of the Invention

[0005] In order to overcome the defects of the prior art, the present invention aims to provide an assembly structure and welding method for twisted pair cables and electrical connectors, so as to solve the technical problems of vibration and speed feedback signal fluctuation caused by cable assembly quality.

[0006] This invention is achieved through the following technical solution:

[0007] An assembly structure for a twisted-pair cable and an electrical connector includes a twisted-pair cable, an electrical connector, and an assembly fixture.

[0008] The assembly fixture includes a first plate, a second plate, and a clamping assembly. One end of the first plate is fixedly connected to one end of the second plate, and the clamping assembly is disposed on the first plate.

[0009] The electrical connector is clamped on the clamping assembly and abuts against the first plate.

[0010] The twisted pair cable is soldered to the pins of the electrical connector.

[0011] Preferably, the clamping assembly includes a support block, a backing block, and a clamping assembly;

[0012] Both the support block and the clamping block are fixedly mounted on the first plate, and the area between the support block and the clamping block is a clamping area. The electrical connector is placed on the clamping block, and the clamping assembly clamps the electrical connector onto the clamping block through the support block.

[0013] Preferably, the clamping assembly includes a fixed handle, a clamping screw, and a clamping block;

[0014] The fixed handle is vertically fixed to one end of the clamping screw, and the other end of the clamping screw is connected to the clamping block through the support block. The clamping block is located in the clamping area and is driven by the clamping screw to press the electrical connector onto the support block.

[0015] Furthermore, the clamping block is provided with a V-groove, and the electrical connector is clamped in the V-groove.

[0016] Furthermore, protective pads are laid inside the V-groove and on the support block.

[0017] Preferably, the first plate and the second plate are inclined together.

[0018] Preferably, the second plate is provided with a number of Phillips head countersunk screws, and the number of Phillips head countersunk screws are used to fix the second plate to the operating table by means of hexagonal nuts.

[0019] A welding method for a twisted-pair cable and an electrical connector, based on the aforementioned assembly structure of a twisted-pair cable and an electrical connector, includes the following process:

[0020] After cutting the twisted pair cable, process it for later use.

[0021] The electrical connector is clamped onto the clamping assembly and abuts against the first board. After positioning the contact points of the electrical connector by adjusting the clamping assembly, the pins of the electrical connector are tinned. Flux is applied to the solder and the solder is placed into the pins. The pins are heated with a soldering iron until the solder melts and fills the pins evenly. After the solder melts, the twisted pair cable is inserted into the pins. Heating continues until the solder on the twisted pair cable cores and the solder in the electrical connector are completely fused. Then the soldering iron is removed to stop heating, completing the soldering of the twisted pair cable and the electrical connector.

[0022] Preferably, the process for processing twisted-pair cables is as follows:

[0023] Strip the twisted pair cable by cutting off the outer metal braided shielding layer, removing the outer sheath of the cable, cutting off the filling glass fiber filaments, and stripping off the innermost sheath to expose the conductor at a set distance from the end of the twisted pair cable.

[0024] The inner shield of the twisted pair cable is a metal wire braided mesh. Following the braiding pattern, use a pick to pry open the metal mesh and then arrange the metal wires into a bundle.

[0025] For the treatment of the inner and outer shielding layers of twisted pair cables, when stripping the inner and outer shielding layers, make a step between the insulation layer between the inner and outer shielding layers. First, straighten the braided layer between the inner and outer shielding layers. Wrap the inner shielding layer cut with electrical insulating tape until it overlaps with the outer shielding layer 2-4 times. Then, smooth the outer shielding layer cut and wrap the outer shielding layer cut with tape 2-4 times. Finally, install a heat shrink tubing with adhesive on the outside of the tape.

[0026] To tin the core of a twisted pair cable, apply homemade flux to the end of the cable core, then slowly move a soldering iron left and right on the end of the cable core to evenly tin it.

[0027] Preferably, the finishing process for the tail of the electrical connector after soldering is as follows:

[0028] Assemble the marked plastic sleeve onto the tail of the electrical connector, reinstall the tail accessories of the electrical connector, and tighten the plug tail screws.

[0029] To seal the tail of the electrical connector, mix the liquid sealing gasket evenly in a dry, clean paper cup, then inject it into the electrical connector using a syringe. Let it stand for 24 hours until the sealing gasket is dry to complete the sealing process.

[0030] After the electrical connector and twisted pair cable are assembled, heat shrink tubing is inserted and then heat-shrinked with a hot air gun. Insulation resistance is then tested. When the insulation resistance is greater than 20MΩ, the end attachment of the electrical connector is finished.

[0031] Compared with the prior art, the present invention has the following beneficial technical effects:

[0032] This invention provides an assembly structure for a twisted-pair cable and an electrical connector. The electrical connector is clamped by an assembly fixture, which includes a first plate, a second plate, and a clamping assembly. The clamping assembly is disposed on the first plate. The electrical connector is clamped on the clamping assembly, and then the twisted-pair cable is soldered to the pins of the electrical connector. This improves the cable assembly quality, enhances the stability of the cable assembly assembly, and avoids failures such as vibration and speed feedback signal fluctuations caused by poor cable assembly quality.

[0033] Furthermore, the clamping assembly includes a support block, a clamping block, and a pressing assembly. Both the support block and the clamping block are fixedly mounted on the first plate, and the area between the support block and the clamping block is the clamping area. The electrical connector is placed on the clamping block, and the pressing assembly presses the electrical connector onto the clamping block through the support block. This allows the electrical connector to be pressed onto the support block by the pressing assembly and then the support block, improving the assembly stability of the electrical connector and ensuring the welding quality of the twisted pair cable on the connector pins.

[0034] Furthermore, the clamping assembly includes a fixing handle, a clamping screw, and a clamping block; the fixing handle is vertically fixed to one end of the clamping screw, and the other end of the clamping screw is connected to the clamping block through a support block. The clamping block is located in the clamping area and is driven by the clamping screw to clamp the electrical connector onto the support block. The fixing handle makes it easy for the operator to use the clamping screw to drive the clamping block to clamp the electrical connector onto the support block, making the electrical connector more stable and improving the welding quality of the twisted pair cable on the electrical connector.

[0035] Furthermore, the clamping block is provided with a V-groove, and the electrical connector is clamped in the V-groove to ensure accurate positioning of the electrical connector at four points of contact. Protective pads are laid in the V-groove and on the support block to protect the parts from being crushed or scratched. The fixture base plate is fixed by four nails distributed at the four corners to ensure reliable positioning.

[0036] This invention also provides a method for welding twisted-pair cables to electrical connectors. The twisted-pair cable is cut and processed. The electrical connector is clamped onto a clamping assembly. The connector pins are tinned. Flux is applied to the solder, which is then placed into the pins. The pins are heated with a soldering iron until the solder melts and evenly fills the pins. After the solder melts, the twisted-pair cable is inserted into the pins. Heating continues until the solder on the twisted-pair cable cores and the solder in the electrical connector are completely fused. The addition of flux increases the fluidity of the solder, significantly improving the cable welding quality. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the fixture structure for the twisted pair cable and electrical connector in this invention.

[0038] Figure 2 This is a schematic diagram of the twisted-pair cable processing procedure in this invention, wherein (a) is a schematic diagram of twisted-pair cable cutting; (b) is a schematic diagram of stripping the outer shielding layer and picking out the inner shielding layer wires of the twisted-pair cable; (c) is a schematic diagram of arranging the metal wires of the twisted-pair cable into a bundle; (d) is a schematic diagram of the insulation treatment of the inner and outer shielding layers of the twisted-pair cable; (e) is a schematic diagram of tinning the core of the twisted-pair cable; (f) is a schematic diagram of soldering the twisted-pair cable; and (g) is a schematic diagram of desoldering the twisted-pair cable.

[0039] Figure 3 This is a schematic diagram of the structure of the electrical connector assembled with the plastic sleeve and liquid sealing gasket in this invention;

[0040] Figure 4 This is a schematic diagram of the structure of the electrical connector assembled with heat shrink tubing in this invention.

[0041] In the diagram: 1-Twisted pair cable; 2-Electrical connector; 3-Assembly fixture; 4-Fixing handle; 5-Support block; 6-Clamping screw; 7-Clamping block; 8-Support block; 9-First plate; 10-Second plate; 11-Cross countersunk screw; 12-Liquid sealing gasket; 13-Plastic sleeve; 14-Heat shrink tubing. Detailed Implementation

[0042] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0043] The present invention will now be described in further detail with reference to the accompanying drawings:

[0044] The purpose of this invention is to provide an assembly structure and welding method for twisted-pair cables and electrical connectors, so as to solve the technical problems of vibration and speed feedback signal fluctuation caused by cable assembly quality.

[0045] See Figure 1 The present invention provides an assembly structure for a twisted pair cable and an electrical connector, including a twisted pair cable 1, an electrical connector 2, and an assembly fixture 3; the assembly fixture 3 includes a first plate 9, a second plate 10, and a clamping assembly, one end of the first plate 9 is fixedly connected to one end of the second plate 10, and the clamping assembly is disposed on the first plate 9; the electrical connector 2 is clamped on the clamping assembly and abuts against the first plate 9; the twisted pair cable 1 is soldered to the pins of the electrical connector 2.

[0046] Specifically, the clamping assembly includes a support block 5, a support block 8, and a clamping assembly; both the support block 5 and the support block 8 are fixedly mounted on the first plate 9, and the area between the support block 5 and the support block 8 is the clamping area. The electrical connector 2 is placed on the support block 8, and the clamping assembly clamps the electrical connector 2 onto the support block 8 through the support block 5.

[0047] Specifically, the clamping assembly includes a fixed handle 4, a clamping screw 6, and a clamping block 7; the fixed handle 4 is vertically fixed to one end of the clamping screw 6, and the other end of the clamping screw 6 is connected to the clamping block 7 through a support block 5. The clamping block 7 is located in the clamping area and is driven by the clamping screw 6 to clamp the electrical connector 2 onto the support block 8.

[0048] The clamping block 7 is provided with a V-groove, and the electrical connector 2 is clamped in the V-groove. Protective pads are laid in the V-groove and on the support block 8.

[0049] In this invention, the first plate 9 and the second plate 10 are inclined together, preferably with an inclination angle of 80°, to meet the most comfortable working position for the human body while ensuring that the solder pillar of the electrical connector maintains an inclination angle of 10° after the workpiece is clamped.

[0050] Specifically, the second plate 10 is provided with a number of cross-slot countersunk screws 11, and the number of cross-slot countersunk screws 11 are used to fix the second plate 10 to the operating table by means of hexagonal nuts.

[0051] This invention also provides a method for welding a twisted-pair cable to an electrical connector, based on the above-described assembly structure of a twisted-pair cable and an electrical connector, comprising the following process:

[0052] After cutting twisted pair cable 1, twisted pair cable 1 is processed for later use;

[0053] The electrical connector 2 is clamped onto the clamping assembly and abuts against the first plate 9. After the contact point of the electrical connector 2 is positioned by adjusting the clamping assembly, the pins of the electrical connector 2 are tinned. The solder is dipped in flux and placed into the pins. The pins are heated with a soldering iron until the solder melts and fills the pins evenly. After the solder melts, the twisted pair cable 1 is inserted into the pins. Heating continues until the solder on the core of the twisted pair cable 1 and the solder in the electrical connector 2 are completely fused. Then the soldering iron is removed to stop heating, and the soldering work between the twisted pair cable and the electrical connector is completed.

[0054] Specifically, the process for processing twisted-pair cable 1 is as follows:

[0055] according to Figure 2 As shown in Figures (a) and (b), the twisted pair cable 1 is stripped by cutting off the outer metal braided shielding layer, removing the outer sheath of the cable, cutting off the filling glass fiber filaments, and stripping the innermost sheath to expose the conductor at a set distance from the end of the twisted pair cable 1.

[0056] according to Figure 2 As shown in Figure (c), the inner shield of twisted pair cable 1 is a metal wire braided mesh. According to the braiding pattern, use a pick to open the metal mesh and then arrange the metal wires into a bundle.

[0057] according to Figure 2 As shown in Figure (d), the inner and outer shielding layers of twisted pair cable 1 are processed by creating a step between the insulation layer between the inner and outer shielding layers when stripping the inner and outer shielding layers. First, the braided layer between the inner and outer shielding layers is neatly arranged. Electrical insulating tape is wrapped around the cut of the inner shielding layer until it overlaps with the outer shielding layer for 2-4 layers. Then, the cut of the outer shielding layer is smoothed and wrapped around the cut of the outer shielding layer for 2-4 layers. Finally, a heat shrink tubing is installed on the outer layer of the tape.

[0058] according to Figure 2As shown in Figures (e), (f), and (g), the core of twisted pair cable 1 is tinned by dipping a homemade flux into the end of the cable core and then slowly moving a soldering iron left and right at the end of the cable core to make the cable core tinned evenly.

[0059] Specifically, the finishing process for the tail of electrical connector 2 after welding is as follows:

[0060] according to Figure 3 As shown, the marked plastic sleeve 13 is assembled onto the tail of the electrical connector 2, the tail accessory of the electrical connector is reinstalled, and the plug tail screw is tightened.

[0061] To seal the tail of the electrical connector 2, use liquid sealing gasket 12. Mix the liquid sealing gasket 12 evenly in a dry, clean paper cup, then inject it into the electrical connector using a syringe. Let it stand for 24 hours until the sealing gasket dries to complete the sealing process.

[0062] After the electrical connector 2 and twisted pair cable 1 are assembled, heat shrink tubing 14 is inserted and heat-shrinked with a hot air gun. Insulation resistance is tested. When the insulation resistance is greater than 20MΩ, the tail of the electrical connector 2 is finished.

[0063] Example

[0064] This embodiment provides a welding process for twisted-pair cables and electrical connectors, the specific process of which is as follows:

[0065] (1) Cable cutting: Since the cable needs to be soldered to the pin inside the electrical connector, in order to ensure the final effective length of the cable, a margin needs to be left for the cable according to the distance from the tail of the electrical connector to the pin of the electrical connector. Therefore, the cable length is cut according to the final effective length L+5cm.

[0066] (2) Cable treatment: This step includes stripping, picking out the wires, treating the inner and outer shielding layers, and tinning the wire core.

[0067] ① Stripping: First, cut off the outer metal braided shielding layer, strip the outer sheath of the cable, then cut off the filling glass fiber filaments, and strip the innermost sheath to expose the conductor 0.5cm away from the cable end.

[0068] ② Wire picking: The inner shield of the cable is a metal wire braided mesh. The metal mesh should be picked apart using a special picking needle according to the braiding pattern, and then the metal wires should be bundled together.

[0069] ③ Inner and outer shielding layer treatment: When cutting cables, damage to the insulation layer at the cut of the outer shielding layer can lead to a short circuit due to overlap between the cut and the connector housing or inner shielding layer. When stripping the inner and outer shielding layers, create a 1cm step between the insulation layers. First, neatly arrange the braided layers between the inner and outer shielding layers. Wrap the inner shielding layer cut with electrical insulating tape until it overlaps with the outer shielding layer 2-4 times. Then, smooth the outer shielding layer cut and wrap it with 61# tape 2-4 times. Finally, add a heat-shrink tubing over the tape. The specifications of the heat-shrink tubing are selected based on the cable's outer diameter and the tubing's shrinkage rate. For example, if the cable's outer diameter is Φ5 and the shrinkage rate is 2:1, then a Φ6-Φ10 heat-shrink tubing should be selected.

[0070] ④ Tinning the cable core: Use a temperature-controlled high-temperature soldering station. When using S-Sn60PbA solder, set the soldering iron temperature to 230-240℃; when using S-Sn5PbAgA solder, set the temperature to 330-340℃. When tinning the cable core, apply homemade flux to the end of the cable core, then slowly move the soldering iron left and right on the end of the cable core to evenly tin it.

[0071] (3) Soldering the connector pins: Fix the connector onto the assembly fixture 3. The assembly fixture 3 is designed with an 80° tilt angle to meet the most comfortable working position for the human body while ensuring that the connector pins maintain a 10° tilt angle after the workpiece is clamped. By fixing the V-block for self-centering and adjusting the movable V-block connected to the fixing handle and clamping screw, the accurate positioning of the connector at four points is ensured. At the same time, rubber pads are added to the V-block of the fixture to protect the parts from being crushed or scratched. The fixture base plate is fixed by four nails distributed at the four corners to ensure reliable positioning. When soldering the connector pins, dip the solder in flux and put the solder into the pin. Heat the pin with a soldering iron until the solder melts and fills the pin evenly. The amount of solder should be 1 / 3 of the pin capacity.

[0072] (4) Soldering of cable and electrical connector: Fix the electrical connector on a special fixture, heat the connector pins, and insert the cable into the pins after the solder melts. Continue heating until the solder on the cable core and the solder in the connector are completely fused. Then remove the soldering iron and stop heating. Do not add any more solder at this time to prevent excess solder from flowing into the gap of the connector pins and causing a short circuit, which would affect the welding quality. At the same time, the addition of flux increases the fluidity of the solder, which greatly improves the welding quality of the cable. The welding of a single cable core should be completed within 4 to 5 seconds.

[0073] (5) Electrical connector tail treatment: This step includes solder joint protection, sealing, and heat shrinking.

[0074] ① After welding, assemble the marked plastic sleeve 13 into place, reinstall the electrical connector tail accessories, and tighten the plug tail screws.

[0075] ② Sealing treatment: Use XJ55 liquid sealing gasket 12 to seal the tail attachment: Mix the two components of liquid sealing gasket 12 evenly in a dry, clean paper cup (mixing ratio: colloid (1 component), catalyst (1 component)), then inject it into the electrical connector with a syringe, and let it stand for 24 hours until the sealing gasket is dry.

[0076] ③ Heat shrinking: After the electrical connector and cable are assembled, put an 8cm heat shrink tubing on them and use a heat gun to shrink it to ensure that the tubing is shrunk properly.

[0077] (6) Inspection of cable assemblies:

[0078] Insulation resistance test: Use a 100V megohmmeter to test the insulation resistance. The insulation resistance should not be less than 20MΩ.

[0079] In summary, this invention provides an assembly structure and welding method for twisted-pair cables and electrical connectors. An assembly fixture is used to clamp the electrical connector. The assembly fixture includes a first plate, a second plate, and a clamping assembly. The clamping assembly is mounted on the first plate. The electrical connector is clamped onto the clamping assembly, and then the twisted-pair cable is welded to the pins of the electrical connector. This improves the cable assembly quality, enhances the stability of the cable assembly assembly, and avoids vibration and speed feedback signal fluctuations caused by poor cable assembly quality. During the welding process, the twisted-pair cable is cut and processed. The electrical connector is clamped onto the clamping assembly, and the pins of the electrical connector are tinned. Flux is applied to the solder, and the solder is placed into the pins. The pins are heated with a soldering iron until the solder melts and evenly fills the pins. After the solder melts, the twisted-pair cable is inserted into the pins. Heating continues until the solder on the twisted-pair cable cores and the solder inside the electrical connector are completely fused. Flux is added to increase the fluidity of the solder, greatly improving the cable welding quality.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A welding method for a twisted pair cable and an electrical connector, the welding method being implemented by an assembly structure for welding the twisted pair cable and the electrical connector, the assembly structure comprising a twisted pair cable (1), an electrical connector (2), and an assembly fixture (3). The assembly fixture (3) includes a first plate (9), a second plate (10) and a clamping assembly. One end of the first plate (9) is fixedly connected to one end of the second plate (10), and the clamping assembly is disposed on the first plate (9). The electrical connector (2) is clamped on the clamping assembly and abuts against the first plate (9); The twisted pair cable (1) is soldered to the pins of the electrical connector (2); The clamping assembly includes a support block (5), a support block (8), and a clamping assembly; The support block (5) and the support block (8) are both fixedly mounted on the first plate (9), and the area between the support block (5) and the support block (8) is a clamping area. The electrical connector (2) is placed on the support block (8), and the clamping assembly clamps the electrical connector (2) onto the support block (8) through the support block (5). The clamping assembly includes a fixed handle (4), a clamping screw (6), and a clamping block (7). The fixed handle (4) is vertically fixed to one end of the clamping screw (6), and the other end of the clamping screw (6) is connected to the clamping block (7) through the support block (5). The clamping block (7) is located in the clamping area and is driven by the clamping screw (6) to press the electrical connector (2) onto the support block (8). The second plate (10) is provided with a plurality of cross-slot countersunk screws (11), and the plurality of cross-slot countersunk screws (11) are used to fix the second plate (10) to the operating table by means of hexagonal nuts. The characteristic of this design is that... The welding method includes the following process: After cutting the twisted pair cable (1), the twisted pair cable (1) is processed for later use; The electrical connector (2) is clamped on the clamping assembly and abuts against the first plate (9). After the contact point of the electrical connector (2) is positioned by adjusting the clamping assembly, the pins of the electrical connector (2) are tinned. The solder is dipped in flux and placed into the pin. The pin is heated with a soldering iron until the solder melts and fills the pin evenly. After the solder melts, the twisted pair cable (1) is inserted into the pin. The heating continues until the solder on the core of the twisted pair cable (1) and the solder in the electrical connector (2) are completely fused. Then the soldering iron is removed and the heating is stopped, and the welding work between the twisted pair cable and the electrical connector is completed. The process of processing twisted-pair cable (1) is as follows: Strip the twisted pair cable (1), cut off the outer metal braided shielding layer, remove the outer sheath of the cable, cut off the glass fiber filling, and remove the innermost sheath to expose the conductor at a set distance from the end of the twisted pair cable (1). The inner shield of the twisted pair cable (1) is a metal wire braided mesh. According to the braiding pattern, use a pick to pick open the metal mesh and then arrange the metal wires into a bundle. For the treatment of the inner and outer shielding layers of twisted pair cable (1), when stripping the inner and outer shielding layers of the cable, make steps in the insulation layer between the inner and outer shielding layers. First, straighten the braided layer between the inner and outer shielding layers. Wrap the inner shielding layer cut with electrical insulating tape until it overlaps with the outer shielding layer 2-4 times. Then, straighten the outer shielding layer cut and wrap the outer shielding layer cut with tape 2-4 times. Finally, add a heat shrink tubing with adhesive on the outer layer of the tape. To tin the core of the twisted pair cable (1), dip the end of the cable core in homemade flux, and then use a soldering iron to slowly move left and right at the end of the cable core to make the cable core tinned evenly.

2. The welding method for a twisted-pair cable and an electrical connector according to claim 1, characterized in that, The clamping block (7) is provided with a V-groove, and the electrical connector (2) is clamped in the V-groove.

3. The welding method for a twisted-pair cable and an electrical connector according to claim 2, characterized in that, Protective pads are laid inside the V-groove and on the support block (8).

4. The welding method for a twisted-pair cable and an electrical connector according to claim 1, characterized in that, The first plate (9) and the second plate (10) are inclined together.

5. The welding method for a twisted-pair cable and an electrical connector according to claim 1, characterized in that, The finishing process for the tail of the electrical connector (2) after welding is as follows: Assemble the marked plastic sleeve (13) onto the tail of the electrical connector (2), reinstall the tail accessory of the electrical connector, and tighten the plug tail screw; Use liquid sealing gasket (12) to seal the tail of electrical connector (2). Mix the liquid sealing gasket (12) evenly in a dry, clean paper cup, then inject it into the electrical connector with a syringe, and let it stand for 24 hours until the sealing gasket dries to complete the sealing process. After the electrical connector (2) and twisted pair cable (1) are assembled, heat shrink tubing (14) is inserted and heat shrinked with a hot air gun. Insulation resistance is tested. When the insulation resistance is greater than 20MΩ, the tail of the electrical connector (2) is finished.

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