High-voltage cable accessory and cable corrugated aluminum sheath automatic lead coating machine and lead coating process

Abstract

The invention relates to a high-voltage cable accessory and cable corrugated aluminum sheath automatic lead coating machine, which comprises a fixing unit, a rotary positioning unit, an operation system and a control module, and is characterized in that the operation system is mounted on the rotary positioning unit, the rotary positioning unit is mounted on the fixing unit, and the fixing unit fixes and clamps a cable; the control module controls the fixing unit, the rotary positioning unit and the operation system to conduct lead coating on the high-voltage cable accessory and the cable corrugated aluminum sheath, the lead coating quality and efficiency can be improved, and automatic operation of the lead coating process is achieved. The invention further provides a lead enameling process using the automatic lead enameling machine for the high-voltage cable accessory and the cable corrugated aluminum sheath, the operation is simple and convenient, and the defect that the manual lead enameling efficiency of the high-voltage cable accessory and the cable corrugated aluminum sheath is low is overcome; and the defects of poor lead coating and safety accidents caused by uneven levels of cable accessory installation personnel and the influence of the field operation environment on the technology are overcome.

Description

Technical Field

[0001] The invention relates to the technical field of cable lead-plating devices, and in particular to an automatic lead-plating machine for high-voltage cable accessories and cable corrugated aluminum sheaths and a lead-plating process. Background Art

[0002] In order to prevent the intrusion of external moisture and ensure reliable electrical connection and solid mechanical structure, high-voltage cable accessories must be reliably connected to the cable corrugated aluminum sheath through lead plating to form a good grounding system. The quality of lead plating process largely determines the service life of the cable terminal or cable intermediate joint. During the on-site construction process, cable insulation burnout is often encountered. Through analysis and verification, it is found that most of them are caused by improper operation methods of cable lead plating or too long baking time.

[0003] The traditional cable lead-plating method is completed manually by cable accessory installers at the construction site, which places high demands on the lead-plating process of cable accessory installers. This is mainly reflected in the following aspects:

[0004] (1) Cable accessory installers need to master factors such as time control, temperature control, and lead material control. If the lead sealing is not properly controlled, the amount of molten lead and injected lead is not appropriate, the preheating area is too large, or the temperature is too high during the preheating process, it will affect the mechanical strength of the cable joint and the main insulation of the cable surface, thereby reducing the life of the cable joint;

[0005] (2) The lead-plating process requires uniform thickness in the circumferential direction and beautiful appearance, which requires delicate operation and experience accumulation;

[0006] (3) The installation locations of accessories are mostly small and cramped working wells, trenches, and mezzanines. The working environment is poor and the working conditions are limited. The installers need to maintain uncomfortable movements for a long time in a small space, which is not conducive to the stability of the process.

[0007] Since the skills of cable accessories installers vary and their workmanship is easily affected by the on-site working environment, it is easy to cause poor lead plating and lead to safety accidents.

[0008] In order to solve the above technical problems, the present invention proposes a high-voltage cable accessory and a cable corrugated aluminum sheath automatic lead-plating machine and a lead-plating process. Summary of the invention

[0009] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide an automatic lead plating machine for high-voltage cable accessories and cable corrugated aluminum sheaths, which can improve the quality and efficiency of lead plating and realize the automation of the lead plating process.

[0010] The present invention also provides a lead plating process using an automatic lead plating machine for high-voltage cable accessories and cable corrugated aluminum sheaths. The operation is simple and convenient, and overcomes the defects of low efficiency of manual lead plating of high-voltage cable accessories and cable corrugated aluminum sheaths, as well as the defects of uneven skills of cable accessory installers and the process being affected by the on-site working environment, resulting in poor lead plating and causing safety accidents.

[0011] The present invention solves the technical problem by the following technical solutions:

[0012] An automatic lead-plating machine for high-voltage cable accessories and cable corrugated aluminum sheaths, comprising a fixing unit, a rotating positioning unit, an operating system and a control module, wherein the operating system is installed on the rotating positioning unit, the rotating positioning unit is installed on the fixing unit, the fixing unit fixes and clamps the cable, and the fixing unit, the rotating positioning unit and the operating system are controlled by the control module to perform lead plating on the high-voltage cable accessories and the cable corrugated aluminum sheaths;

[0013] The operating system includes a transmission unit, a heating mechanism, a shaping feedback mechanism and lead material:

[0014] The transmission unit includes a spiral wire feeding mechanism and a hollow stepping motor connected to the lower end of the spiral wire feeding mechanism; the spiral wire feeding mechanism includes a fixed base and a plurality of groups of rubber-coated rollers installed on the fixed base; the fixed base is sleeved on the upper end of the hollow shaft of the hollow stepping motor, the lead material is wrapped in the center of the plurality of groups of rubber-coated rollers, and passes through the fixed base and the hollow shaft in sequence; the hollow stepping motor drives the fixed base to rotate, and the plurality of groups of rubber-coated rollers rotate to drive the lead material to move downward for transportation;

[0015] The heating mechanism includes an intermediate frequency heating protection seat, a quartz sleeve, a quartz sleeve fixing plate, an intermediate frequency heating coil, an intermediate frequency coil fixing plate and a temperature sensor. The intermediate frequency heating protection seat is installed at the lower end of the hollow stepping motor. An intermediate frequency coil fixing plate is installed on one side of the intermediate frequency heating protection seat. The quartz sleeve is installed on the intermediate frequency heating protection seat through the quartz sleeve fixing plate. A temperature sensor is sleeved on the quartz sleeve. The temperature sensor surrounds the intermediate frequency heating coil. The lead material extends into the quartz sleeve and is heated by the intermediate frequency heating coil.

[0016] The stereotyped feedback mechanism comprises a coated heating head, a coated heating wire, a pressure-sensitive element and a copper-clad mesh sealing element. A pressure-sensitive element through groove is provided at the bottom of the coated heating head, and the pressure-sensitive element is installed in the pressure-sensitive element through groove. A circumferential groove is provided at the top of the coated heating head, and the coated heating wire is installed in the circumferential groove. The copper-clad mesh sealing element is welded on the bottom surface of the coated heating head. The heated lead material flows out from the inner center of the coated heating head to lead the high-voltage cable accessories and the cable corrugated aluminum sheath.

[0017] The fixing unit comprises a radial clamping mechanism and an axial adjustment mechanism connected to the radial clamping mechanism, the radial clamping mechanism fixes and clamps the cable, and the operating system adjusts the axial direction on the high-voltage cable accessories and the cable corrugated aluminum sheath through the axial adjustment mechanism;

[0018] The rotary positioning unit includes a circumferential rotating mechanism and a positioning mechanism, wherein the positioning mechanism is mounted on the circumferential rotating mechanism, and the circumferential rotating mechanism is mounted on the axial adjusting mechanism. The operating system is mounted on the lead-lined high-voltage cable accessories and the cable corrugated aluminum sheath on the circumferential rotating mechanism through the positioning mechanism.

[0019] Furthermore, a center hole one is provided in the center of the fixed base, and the diameter of the center hole one is 10.5 mm; a plurality of roller holes are provided on the circumference of the upper end of the fixed base, and the diameter of the plurality of roller holes is 9.5 mm; the plurality of groups of rubber-coated rollers are three groups of rubber-coated rollers, and the height difference of each group of rubber-coated rollers is 0.5 mm, and each group of rubber-coated rollers is installed on the roller holes by means of screws and nuts, and the lead material extends into the center hole one of the fixed base, and is wrapped in the center by the three groups of rubber-coated rollers.

[0020] Furthermore, a U-shaped groove is provided at the upper end of the medium frequency heating protection seat, the medium frequency heating coil is installed in the U-shaped groove, and both ends of the medium frequency heating coil pass through one side of the medium frequency heating protection seat; a center hole 2 is provided at the bottom end of the medium frequency heating protection seat, and the quartz sleeve extending into the lead material is embedded in the medium frequency heating coil and the center hole 2 in sequence.

[0021] Furthermore, a central hole three is arranged at the upper end of the coating heating head, and a lead material flow hole is arranged at the lower end. The quartz sleeve extending into the lead material is embedded in the central hole three. The lead material is heated by the medium frequency heating coil and then flows out through the lead material flow hole.

[0022] Furthermore, the hollow stepping motor is connected to the medium frequency heating protection seat through a motor support.

[0023] Further, the radial clamping mechanism comprises a clamping base and a clamping slider, one end surface of the clamping base is provided with a track, mounting seats are provided on the clamping base at both ends of the track, a clamping screw is installed on the mounting seat, the clamping slider is slidably installed on the track and the clamping screw, and the spacing of the clamping slider is adjusted by a clamping handle installed at one end of the clamping screw to fix the clamping cable;

[0024] The axial adjustment mechanism includes a stepper motor 1, a mechanical arm, an optical axis and a housing base, wherein one end face of the housing base is connected to one end of the mechanical arm, and the other end of the mechanical arm is connected to the other end face of the clamping base, and the optical axis connects the clamping base to the housing base through a connecting seat, and the stepper motor 1 at the upper end of the mechanical arm drives the mechanical arm to drive the housing base to move axially;

[0025] The rotary positioning unit comprises a circumferential rotating mechanism and a positioning mechanism, wherein the positioning mechanism is mounted on the circumferential rotating mechanism, and the circumferential rotating mechanism is mounted on the axial adjusting mechanism, and the operating system is mounted on the lead-lined high-voltage cable accessories and the cable corrugated aluminum sheath on the circumferential rotating mechanism through the positioning mechanism;

[0026] The circumferential rotation mechanism includes a second stepping motor, a driving gear, a turntable, a rotating pressure plate and a fixed slot box. The turntable is installed in the housing base. The second stepping motor drives the driving gear to rotate and drive the turntable to rotate. The driving gear and the turntable are connected to the housing base through the rotating pressure plate and the fixed slot box.

[0027] The positioning mechanism includes a third stepper motor, a mounting plate and a guide rail assembly. The mounting plate is mounted on the turntable. The heating mechanism is mounted on the mounting plate through the guide rail assembly. The third stepper motor drives the lifting screw to drive the operating system connected to the guide rail assembly to slide.

[0028] A lead-plating process using a high-voltage cable accessory and an automatic lead-plating machine for a cable corrugated aluminum sheath comprises the following steps:

[0029] Step 1: Fix and clamp one end of the processed cable through the radial clamping mechanism, and pass the other end through the axial adjustment mechanism. The high-voltage cable accessories are sleeved on the corrugated aluminum sheath of the cable;

[0030] Step 2: The control module controls the axial adjustment mechanism to adjust the lead-plated position of the high-voltage cable accessories and the cable corrugated aluminum sheath to be located at the lower end of the copper mesh sealing element;

[0031] Step 3: The control module controls the circumferential rotating mechanism to drive the operating system to rotate and lead the high-voltage cable accessories and the cable corrugated aluminum sheath;

[0032] Step 4: Place the lead material in the center hole 1 of the fixed base of the spiral wire feeding mechanism and wrap it around the center of the three sets of rubber-coated rollers;

[0033] Step 5: The control module servo controls the heating temperature of the coating heating wire inside the coating heating head to heat the copper mesh sealing element welded at the lower end of the coating heating head;

[0034] Step 6: The control module servo controls the hollow stepper motor to drive, and the hollow shaft of the hollow stepper motor drives the fixed base to rotate. The lead material is fed downward by the friction generated by the rotation of three sets of rubber-coated rollers;

[0035] Step 7, the lead material is sequentially inserted into the air shaft, the quartz sleeve inside the intermediate frequency heating protection seat and the central hole 3 inside the coating heating head;

[0036] Step 8: The control module servo controls the heating temperature of the intermediate frequency heating coil inside the intermediate frequency heating protection seat to heat the lead material, and the heating temperature range is 180°C-200°C. The temperature sensor on the quartz sleeve inside the intermediate frequency heating protection seat feeds back the heating temperature to the control module in real time;

[0037] Step 9: The lead material is heated by the medium frequency heating coil and flows out through the lead material flow hole to lead the high-voltage cable accessories and the cable corrugated aluminum sheath. The pressure-sensitive element installed in the pressure-sensitive element slot at the bottom of the coating heating head monitors the pressing force value of the copper mesh sealing element and the cable corrugated aluminum sheath during the lead-enameling process in real time and feeds back to the control module;

[0038] Step 10: Apply the softened lead material on the corrugated aluminum sheath of the cable. Repeat the operation until the thickness of the lead material reaches the required size. The lead plating is completed and the process begins to cool and set.

[0039] The advantages and positive effects of the present invention are:

[0040] 1. The automatic lead-plating machine for high-voltage cable accessories and cable corrugated aluminum sheath of the present invention has a spiral wire feeding mechanism comprising a fixed base and a plurality of groups of rubber-coated rollers installed on the fixed base, wherein the plurality of groups of rubber-coated rollers are three groups of rubber-coated rollers, and the height difference between each group of rubber-coated rollers is 0.5 mm, and the lead material is wrapped in the center of the three groups of rubber-coated rollers; the fixed base is mounted on the upper end of the hollow shaft of the hollow stepper motor, and the hollow stepper motor drives the fixed base to rotate. Due to the height difference between each group of rubber-coated rollers, the lead material is fed downward by the friction generated by the rotation of the three groups of rubber-coated rollers.

[0041] 2. In the automatic lead-plating machine for high-voltage cable accessories and cable corrugated aluminum sheaths of the present invention, the lead material extends into the quartz sleeve and is heated by the medium-frequency heating coil, thereby preventing the lead material from directly contacting the medium-frequency heating coil.

[0042] 3. The automatic lead-plating machine for high-voltage cable accessories and cable corrugated aluminum sheath of the present invention has a heating wire coated inside the coating heating head to heat the copper mesh sealing element welded to the lower end of the coating heating head. The heating temperature is the same as the temperature of the lead material flowing out of the quartz sleeve, ensuring that the lead material and the cable corrugated aluminum sheath are effectively cross-linked and fixed.

[0043] 4. The automatic lead-plating machine for high-voltage cable accessories and cable corrugated aluminum sheath of the present invention has a copper-clad mesh sealing element welded on the bottom surface of the coating heating head. The heated lead material flows out from the inner center of the coating heating head to lead-line the high-voltage cable accessories and the cable corrugated aluminum sheath. The copper-clad mesh sealing element also plays a role in limiting the lead sealing. The surface shape of the copper-clad mesh sealing element is differentiated according to the lead sealing requirements and can be designed according to the outer diameter of the cable corrugated aluminum sheath. The inner layer of the copper-clad mesh sealing element is fluororubber and the outer layer is copper mesh to prevent the lead material from overheating and scalding the element. The copper-clad mesh sealing element embosses the semi-solidified lead material on the surface of the cable corrugated aluminum sheath to achieve a sealing effect.

[0044] 5. The automatic lead-plating machine for high-voltage cable accessories and cable corrugated aluminum sheath of the present invention has a turntable that can realize ±270° rotation starting from the middle reference position; there are two stepper motors 2, and when the turntable rotates to a certain angle range, the notch of the turntable will face one of the stepper motors 2, and at this time, the turntable is controlled by the other stepper motor 2 to continue rotating; thereby realizing 360° operation of the operating system.

[0045] 6. The fixing unit of the high-voltage cable accessories and the automatic lead-plating machine for the cable corrugated aluminum sheath of the present invention can automatically complete subsequent axial positioning, displacement and operation after one positioning, avoiding multiple dimensional measurements during the lead sealing process to cause position errors.

[0046] 7. The automatic lead-plating machine for high-voltage cable accessories and cable corrugated aluminum sheath of the present invention is detachable, flexible to assemble, and convenient to transport. It can be effectively used in complex environments, can improve the quality and efficiency of lead plating, and realize the automation of lead plating process.

[0047] 8. The present invention utilizes the lead-plating process of the automatic lead-plating machine for high-voltage cable accessories and cable corrugated aluminum sheaths, which is easy to operate and overcomes the defects of low efficiency of manual lead-plating of high-voltage cable accessories and cable corrugated aluminum sheaths; as well as the defects that the level of cable accessory installers is uneven and the process is affected by the on-site working environment, resulting in poor lead-plating and causing safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 This is a working state diagram of the high-voltage cable accessories and the automatic lead-plating machine for the cable corrugated aluminum sheath of the present invention;

[0049] Figure 2 It is a three-dimensional diagram of the operating system of the high-voltage cable accessories and the automatic lead-plating machine for the cable corrugated aluminum sheath of the present invention;

[0050] Figure 3 Another stereoscopic view of the operating system of the high-voltage cable accessories and the automatic lead-plating machine for the cable corrugated aluminum sheath of the present invention;

[0051] Figure 4It is a side view of the operating system of the high-voltage cable accessories and the automatic lead-plating machine for the cable corrugated aluminum sheath of the present invention;

[0052] Figure 5 for Figure 4 Sectional view of AA;

[0053] Figure 6 It is a stereoscopic diagram of the medium frequency heating protection seat of the high voltage cable accessories and the automatic lead-plating machine for the cable corrugated aluminum sheath of the present invention;

[0054] Figure 7 It is a cross-sectional view of the shaping feedback mechanism of the high-voltage cable accessories and the cable corrugated aluminum sheath automatic lead-plating machine of the present invention;

[0055] Figure 8 It is a stereoscopic diagram of the fixing unit and the rotating positioning unit of the high-voltage cable accessories and the automatic lead-plating machine for the cable corrugated aluminum sheath of the present invention;

[0056] Fig. 9 It is a three-dimensional view from another angle of the fixing unit and the rotating positioning unit of the high-voltage cable accessories and the automatic lead-plating machine for the cable corrugated aluminum sheath of the present invention;

[0057] Fig.10 It is a partial exploded view of the axial adjustment mechanism and the circumferential rotation mechanism of the high-voltage cable accessories and the automatic lead-plating machine for the cable corrugated aluminum sheath of the present invention;

[0058] In the figure:

[0059] 1-lead material, 2-spiral wire feeding mechanism, 21-fixed base, 22-rubber coated roller, 23-center hole one, 24-roller hole, 3-hollow stepper motor, 4-motor support, 5-heating mechanism, 51-quartz sleeve fixing plate, 52-quartz sleeve, 53-medium frequency heating coil, 54-medium frequency heating protection seat, 55-medium frequency coil fixing plate, 56-temperature sensor, 57-U-shaped groove, 58-center hole two, 6-forming feedback mechanism, 61-coated heating head, 62-coated heating wire, 63-pressure sensitive element, 64-copper mesh sealing element, 65-pressure sensitive element through groove, 66-circumferential groove, 67-center hole three, 68-lead material flow hole, 7-hollow shaft, 8-cable, 8 1-corrugated aluminum sheath of cable, 9-high voltage cable accessories, 100-radial clamping mechanism, 101-track, 102-clamping slider, 103-clamping screw, 104-clamping handle, 105-clamping base, 106-mounting seat, 200-axial adjustment mechanism, 201-housing base, 202-mechanical arm, 203-stepping motor one, 204-optical axis, 300-circumferential rotation mechanism, 301-stepping motor two, 302-driving gear, 303-turntable, 304-fixed slot box, 305-rotating pressure plate, 400-positioning mechanism, 401-stepping motor three, 402-guide rail assembly, 403-mounting plate, 404-lifting screw, 500-operating system. DETAILED DESCRIPTION

[0060] The present invention is further described in detail below through specific examples. The following examples are only illustrative and not restrictive, and the protection scope of the present invention cannot be limited thereto.

[0061] like Figure 1-10 As shown, an automatic lead-plating machine for high-voltage cable accessories and cable corrugated aluminum sheaths includes a fixing unit, a rotation positioning unit, an operating system 500 and a control module. The operating system 500 is installed on the rotation positioning unit, and the rotation positioning unit is installed on the fixing unit. The fixing unit fixes and clamps the cable 8. The control module controls the fixing unit, the rotation positioning unit and the operating system 500 to lead-plate the high-voltage cable accessories 9 and the cable corrugated aluminum sheath 81.

[0062] like Figure 8-9As shown, the fixing unit includes a radial clamping mechanism 100 and an axial adjustment mechanism 200 connected to the radial clamping mechanism 100. The radial clamping mechanism 100 fixes and clamps the cable 8. The operating system 500 adjusts the axial direction on the high-voltage cable accessories 9 and the cable corrugated aluminum sheath 81 through the axial adjustment mechanism 200. The radial clamping mechanism 100 includes a clamping base 105 and a clamping slider 102. Two rails 101 are arranged parallel to one end surface of the clamping base 105. Mounting seats 106 are arranged on the clamping base 105 at both ends of the rails 101. A clamping screw 103 is installed on the mounting seat 106. The clamping slider 102 is slidably installed on the rails 101 and the clamping screw 103. The spacing of the clamping slider 102 is adjusted by a clamping handle 104 installed at one end of the clamping screw 103 to fix and clamp the cable 8; axial The adjustment mechanism 200 includes a stepper motor 203, a robotic arm 202, an optical axis 204 and a shell base 201. The robotic arm 202 is divided into two groups. One end face of the shell base 201 is connected to one end of the robotic arm 202, and the other end of the robotic arm 202 is connected to the other end face of the clamping base 105. The optical axis 204 connects the clamping base 105 to the shell base 201 through a connecting seat. A stepper motor 203 at the upper end of a group of robotic arms 202 drives the robotic arm 202 to drive the shell base 201 to move axially.

[0063] like Figure 8-10As shown, the rotation positioning unit includes a circumferential rotation mechanism 300 and a positioning mechanism 400. The positioning mechanism 400 is installed on the circumferential rotation mechanism 300. The circumferential rotation mechanism 300 is installed on the axial adjustment mechanism 200. The operating system 500 is installed on the lead-lined high-voltage cable accessories 9 and the cable corrugated aluminum sheath 81 on the circumferential rotation mechanism 300 through the positioning mechanism 400. The circumferential rotating mechanism 300 includes a stepper motor 2 301, a driving gear 302, a turntable 303, a rotating pressure plate 305 and a fixed slot box 304. There are two stepper motors 2 301 and two driving gears 302. The turntable 303 is installed in the outer shell base 201. The two stepper motors 2 301 installed at the upper end of the outer side of the outer shell base 201 drive the two driving gears 302 installed in the outer shell base 201 to rotate and drive the turntable 303 to rotate. The driving gear 302 and the turntable 303 are connected to the outer shell base 201 through the rotating pressure plate 305 and the fixed slot box 304; the positioning mechanism 400 includes a stepper motor 3 401, a mounting plate 403 and a guide rail assembly 402. The mounting plate 403 is installed on the turntable 303. The heating mechanism 5 is installed on the mounting plate 403 through the guide rail assembly 402. The stepper motor 3 401 drives the lifting screw 404 to drive the operating system 500 connected to the guide rail assembly 402 to slide. The turntable 303 can realize ±270° rotation starting from the middle reference position; there are two stepper motors 301. When the turntable 303 rotates to a certain angle range, the notch of the turntable 303 will face one of the stepper motors 301. At this time, the turntable 303 is controlled by the other stepper motor 301 to continue rotating; thereby realizing the 360° operation requirement of the operating system 500.

[0064] The transmission unit of the operating system 500 includes a spiral wire feeding mechanism 2 and a hollow stepper motor 3 connected to the lower end of the spiral wire feeding mechanism 2, and the hollow stepper motor 3 is installed on the heating mechanism 5 through a motor support 4; the spiral wire feeding mechanism 2 includes a fixed base 21 and a plurality of groups of rubber-coated rollers 22 installed on the fixed base 21; the fixed base 21 is sleeved on the upper end of the hollow shaft 7 of the hollow stepper motor 3, and the lead material 1 is wrapped in the center of the plurality of groups of rubber-coated rollers 22 and passes through the fixed base 21 and the hollow shaft 7 in sequence; the hollow stepper motor 3 drives the fixed base 21 to rotate, and the plurality of groups of rubber-coated rollers 22 rotate to drive the lead material 1 to move downward for transportation; a center is provided at the center of the fixed base. There is a center hole 23, and the diameter of the center hole 23 is 10.5mm; a plurality of roller holes 24 are arranged on the circumference of the upper end of the fixed base, and the diameter of the plurality of roller holes 24 is 9.5mm; the plurality of groups of rubber-coated rollers 22 are three groups of rubber-coated rollers 22, and the height difference of each group of rubber-coated rollers 22 is 0.5mm, and each group of rubber-coated rollers 22 is installed on the roller holes 24 by screws and nuts, and the lead material 1 extends into the center hole 23 of the fixed base and is wrapped in the center by the three groups of rubber-coated rollers 22. Due to the height difference between each group of rubber-coated rollers 22, when the three groups of rubber-coated rollers 22 rotate one circle, the lead material 1 generates friction through the rotation of the three groups of rubber-coated rollers 22 to achieve a downward feeding length of 1mm.

[0065] The heating mechanism 5 includes an intermediate frequency heating protection seat 54, a quartz sleeve 52, a quartz sleeve fixing plate 51, an intermediate frequency heating coil 53, an intermediate frequency coil fixing plate 55 and a temperature sensor 56. The hollow stepping motor 3 is connected to the intermediate frequency heating protection seat 54 through the motor support 4. The intermediate frequency heating protection seat 54 is installed at the lower end of the hollow stepping motor 3, and an intermediate frequency coil fixing plate 55 is installed on one side of the intermediate frequency heating protection seat 54. The quartz sleeve 52 is installed on the intermediate frequency heating protection seat 54 through the quartz sleeve fixing plate 51. The quartz sleeve 52 is sleeved with a temperature sensor 56. The temperature sensor 56 surrounds the intermediate frequency heating coil 53. The lead material 1 extends into the quartz sleeve 52 and is heated by the intermediate frequency heating coil 53 to prevent the lead material 1 from directly contacting the intermediate frequency heating coil 53. A U-shaped groove 57 is arranged at the upper end of the intermediate frequency heating protection seat 54, and the intermediate frequency heating coil 53 is installed in the U-shaped groove 57. Both ends of the intermediate frequency heating coil 53 pass through one side of the intermediate frequency heating protection seat 54, and pass through the intermediate frequency coil fixing plate 55 installed on the intermediate frequency heating protection seat 54. A center hole 2 58 is arranged at the bottom end of the intermediate frequency heating protection seat 54, and the quartz sleeve 52 extending into the lead material 1 is sequentially embedded in the intermediate frequency heating coil 53 and the center hole 2 58. The intermediate frequency coil fixing plate 55 and the intermediate frequency heating protection seat 54 are used to support and protect the intermediate frequency heating coil 53.

[0066] The shaping feedback mechanism 6 includes a coating heating head 61, a coating heating wire 62, a pressure-sensitive element 63 and a copper-clad mesh sealing element 64. A pressure-sensitive element 63 through groove is provided at the bottom of the coating heating head 61, and the pressure-sensitive element 63 is installed in the pressure-sensitive element 63 through groove. A circumferential groove 66 is provided at the top of the coating heating head 61, and the coating heating wire 62 is installed in the circumferential groove 66. The copper-clad mesh sealing element 64 is welded on the bottom surface of the coating heating head 61. The heated lead material 1 flows out from the inner center of the coating heating head 61 to lead the high-voltage cable accessories 9 and the cable corrugated aluminum sheath 81. The copper-clad mesh sealing element 64 also plays a role in sealing and limiting the lead. The surface shape of the copper-clad mesh sealing element 64 is differentiated according to the lead sealing requirements, and can be designed according to the outer diameter of the cable corrugated aluminum sheath 81. The inner layer of the copper-clad mesh sealing element 64 is fluororubber, and the outer layer is copper mesh to prevent the lead material 1 from overheating and scalding the element. The copper-clad mesh sealing element 64 coats the lead material 1 in a semi-solidified state with lead on the surface of the cable corrugated aluminum sheath 81 to achieve a sealing effect. A center hole 3 67 is provided at the upper end of the coating heating head 61, and a lead material flow hole 68 is provided at the lower end. The quartz sleeve 52 extending into the lead material 1 is embedded in the center hole 3 67. The lead material 1 is heated by the medium-frequency heating coil 53 and flows out through the lead material flow hole 68. The coating heating wire 62 inside the coating heating head 61 heats the copper-clad mesh sealing element 64 welded to the lower end of the coating heating head 61. The heating temperature is the same as the temperature of the lead material 1 flowing out of the quartz sleeve 52, ensuring that the lead material 1 and the cable corrugated aluminum sheath 81 are effectively cross-linked and fixed.

[0067] The control module servo controls the stepper motor 1 203, the stepper motor 2 301, the stepper motor 3 401, the hollow stepper motor 3 drive, the heating temperature of the medium frequency heating coil 53, the heating temperature of the coating heating wire 62 and the pressure threshold of the pressure sensitive element 63, and obtains feedback data.

[0068] The working principle of the automatic lead-plating machine for high-voltage cable accessories and cable corrugated aluminum sheath of the present invention is as follows:

[0069] One end of the processed cable 8 is fixed and clamped by the radial clamping mechanism 100, and the other end passes through the axial adjustment mechanism 200, and the high-voltage cable accessory 9 is sleeved on the cable corrugated aluminum sheath 81; the control module controls the axial adjustment mechanism 200 to adjust the lead-plating position of the high-voltage cable accessory 9 and the cable corrugated aluminum sheath 81 to the lower end of the copper mesh sealing element 64; the control module controls the circumferential rotation mechanism 300 to drive the operating system 500 to rotate to lead the high-voltage cable accessory 9 and the cable corrugated aluminum sheath 81; the lead material 1 is placed in the center hole 23 of the fixed base 21 of the spiral wire feeding mechanism 2, and wrapped in the center of the three groups of rubber-coated rollers 22, and the control module servo controls the coating heating head 61 to coat the heating wire 62 inside to heat the copper mesh sealing element 64 welded at the lower end of the coating heating head 61; the control module servo controls the hollow stepper motor 3 to drive, and the hollow shaft 7 of the hollow stepper motor 3 drives the fixed base 21 to rotate, and the lead material 1 passes through the three groups of rubber-coated rollers 2 2 rotates to generate friction to realize downward feeding, and passes through the air shaft, the quartz sleeve 52 inside the intermediate frequency heating protection seat 54 and the central hole 67 inside the coating heating head 61 in turn; the control module servo controls the intermediate frequency heating coil 53 inside the intermediate frequency heating protection seat 54 to heat the lead material 1, and the temperature sensor 56 on the quartz sleeve 52 inside the intermediate frequency heating protection seat 54 feeds back the heating temperature to the control module in real time; the lead material 1 is heated by the intermediate frequency heating coil 53 and flows out through the lead material flow hole 68, and the high-voltage cable accessories 9 and the cable corrugated aluminum sheath 81 are lead-lined, and the pressure-sensitive element 63 installed in the pressure-sensitive element slot 65 at the bottom of the coating heating head 61 monitors the pressing force value of the copper mesh sealing element 64 and the cable corrugated aluminum sheath 81 during the lead-lined process in real time and feeds back to the control module; the softened lead material 1 is smeared on the cable corrugated aluminum sheath 81, and the operation is repeated until the thickness of the lead material 1 reaches the required size, the lead-lined end, and enters the cooling and shaping process.

[0070] A lead-plating process using a high-voltage cable accessory and an automatic lead-plating machine for a cable corrugated aluminum sheath comprises the following steps:

[0071] Step 1: fix and clamp one end of the processed cable 8 through the radial clamping mechanism 100, and pass the other end through the axial adjustment mechanism 200, and the high-voltage cable accessory 9 is sleeved on the cable corrugated aluminum sheath 81;

[0072] Step 2, the control module controls the axial adjustment mechanism 200 to adjust the lead-plated position of the high-voltage cable accessory 9 and the cable corrugated aluminum sheath 81 to be placed at the lower end of the copper mesh sealing element 64;

[0073] Step 3, the control module controls the circumferential rotating mechanism 300 to drive the operating system 500 to rotate and lead the high-voltage cable accessories 9 and the cable corrugated aluminum sheath 81;

[0074] Step 4: Place the lead material 1 in the center hole 23 of the fixed base 21 of the spiral wire feeding mechanism 2, and wrap it around the center of the three sets of rubber-coated rollers 22;

[0075] Step 5, the control module servo controls the heating temperature of the coating heating wire 62 inside the coating heating head 61, and heats the copper mesh sealing element 64 welded at the lower end of the coating heating head 61. The heating temperature is the same as the temperature of the lead material 1 flowing out of the quartz sleeve 52, ensuring that the lead material 1 is effectively cross-linked and fixed with the cable corrugated aluminum sheath 81;

[0076] Step 6: The control module servo controls the driving of the hollow stepper motor 3, and the hollow shaft 7 of the hollow stepper motor 3 drives the fixed base to rotate, and the lead material 1 is fed downward by the friction force generated by the rotation of the three sets of rubber-coated rollers 22;

[0077] Step 7, the lead material 1 is sequentially inserted into the air shaft, the quartz sleeve 52 inside the intermediate frequency heating protection seat 54 and the central hole 3 67 inside the coating heating head 61;

[0078] Step 8: The control module servo controls the heating temperature of the intermediate frequency heating coil 53 inside the intermediate frequency heating protection seat 54 to heat the lead material 1. The heating temperature range is 190° C. The temperature sensor 56 on the quartz sleeve 52 inside the intermediate frequency heating protection seat 54 feeds back the heating temperature to the control module in real time.

[0079] Step 9, the lead material 1 is heated by the medium frequency heating coil 53 and flows out through the lead material flow hole 68 to lead the high-voltage cable accessories 9 and the cable corrugated aluminum sheath 81. The pressure-sensitive element 63 installed in the pressure-sensitive element through groove 65 at the bottom of the coating heating head 61 monitors the pressing force value between the copper mesh sealing element 64 and the cable corrugated aluminum sheath 81 in real time during the lead-enameling process and feeds back to the control module to accurately determine the density of the lead-enameling;

[0080] Step 10: Apply the softened lead material 1 on the cable corrugated aluminum sheath 81. Repeat the operation until the thickness of the lead material 1 reaches the required size. The lead plating is completed and the process begins to cool and set.

[0081] Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art will appreciate that various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. An automatic lead-plating machine for high-voltage cable accessories and cable corrugated aluminum sheaths, characterized by: It includes a fixing unit, a rotating positioning unit, an operating system and a control module. The operating system is installed on the rotating positioning unit, and the rotating positioning unit is installed on the fixing unit. The fixing unit fixes and clamps the cable. The fixing unit, the rotating positioning unit and the operating system are controlled by the control module to perform lead plating on high-voltage cable accessories and the corrugated aluminum sheath of the cable. The operating system includes a transmission unit, a heating mechanism, a shaping feedback mechanism and lead material: The transmission unit includes a spiral wire feeding mechanism and a hollow stepping motor connected to the lower end of the spiral wire feeding mechanism; the spiral wire feeding mechanism includes a fixed base and a plurality of groups of rubber-coated rollers installed on the fixed base; the fixed base is sleeved on the upper end of the hollow shaft of the hollow stepping motor, the lead material is wrapped in the center of the plurality of groups of rubber-coated rollers, and passes through the fixed base and the hollow shaft in sequence; the hollow stepping motor drives the fixed base to rotate, and the plurality of groups of rubber-coated rollers rotate to drive the lead material to move downward for transportation; The heating mechanism includes an intermediate frequency heating protection seat, a quartz sleeve, a quartz sleeve fixing plate, an intermediate frequency heating coil, an intermediate frequency coil fixing plate and a temperature sensor. The intermediate frequency heating protection seat is installed at the lower end of the hollow stepping motor. An intermediate frequency coil fixing plate is installed on one side of the intermediate frequency heating protection seat. The quartz sleeve is installed on the intermediate frequency heating protection seat through the quartz sleeve fixing plate. A temperature sensor is sleeved on the quartz sleeve. The temperature sensor surrounds the intermediate frequency heating coil. The lead material extends into the quartz sleeve and is heated by the intermediate frequency heating coil. The stereotyped feedback mechanism comprises a coated heating head, a coated heating wire, a pressure-sensitive element and a copper-clad mesh sealing element. A pressure-sensitive element through groove is provided at the bottom of the coated heating head, and the pressure-sensitive element is installed in the pressure-sensitive element through groove. A circumferential groove is provided at the top of the coated heating head, and the coated heating wire is installed in the circumferential groove. The copper-clad mesh sealing element is welded on the bottom surface of the coated heating head. The heated lead material flows out from the inner center of the coated heating head to lead the high-voltage cable accessories and the cable corrugated aluminum sheath. The fixing unit comprises a radial clamping mechanism and an axial adjustment mechanism connected to the radial clamping mechanism, the radial clamping mechanism fixes and clamps the cable, and the operating system adjusts the axial direction on the high-voltage cable accessories and the cable corrugated aluminum sheath through the axial adjustment mechanism; The rotary positioning unit includes a circumferential rotating mechanism and a positioning mechanism, wherein the positioning mechanism is mounted on the circumferential rotating mechanism, and the circumferential rotating mechanism is mounted on the axial adjusting mechanism. The operating system is mounted on the lead-lined high-voltage cable accessories and the cable corrugated aluminum sheath on the circumferential rotating mechanism through the positioning mechanism.

2. The automatic lead-plating machine for high-voltage cable accessories and cable corrugated aluminum sheath according to claim 1 is characterized by: A center hole one is arranged in the center of the fixed base, and the diameter of the center hole one is 10.5 mm; a plurality of roller holes are arranged on the circumference of the upper end of the fixed base, and the diameter of the plurality of roller holes is 9.5 mm; the plurality of groups of rubber-coated rollers are three groups of rubber-coated rollers, and the height difference of each group of rubber-coated rollers is 0.5 mm, and each group of rubber-coated rollers is installed on the roller holes by means of screws and nuts, and the lead material extends into the center hole one of the fixed base, and is wrapped in the center by the three groups of rubber-coated rollers.

3. The automatic lead-plating machine for high-voltage cable accessories and cable corrugated aluminum sheath according to claim 1 is characterized by: A U-shaped groove is arranged at the upper end of the medium frequency heating protection seat, and the medium frequency heating coil is installed in the U-shaped groove. Both ends of the medium frequency heating coil pass through one side of the medium frequency heating protection seat; a second center hole is arranged at the bottom end of the medium frequency heating protection seat, and the quartz sleeve extending into the lead material is embedded in the medium frequency heating coil and the second center hole in turn.

4. The automatic lead-plating machine for high-voltage cable accessories and cable corrugated aluminum sheath according to claim 1 is characterized by: The coating heating head has a central hole three at the upper end and a lead material flow hole at the lower end. The quartz sleeve extending into the lead material is embedded in the central hole three. The lead material is heated by the medium frequency heating coil and flows out through the lead material flow hole.

5. The automatic lead-plating machine for high-voltage cable accessories and cable corrugated aluminum sheath according to claim 1 is characterized by: The hollow stepping motor is connected to the medium frequency heating protection seat through a motor support.

6. The automatic lead-plating machine for high-voltage cable accessories and cable corrugated aluminum sheath according to claim 1 is characterized by: The radial clamping mechanism comprises a clamping base and a clamping slider, wherein a track is arranged on one end surface of the clamping base, mounting seats are arranged on the clamping base at both ends of the track, a clamping screw is mounted on the mounting seats, the clamping slider is slidably mounted on the track and the clamping screw, and the spacing of the clamping slider is adjusted by a clamping handle mounted at one end of the clamping screw to fix the clamping cable; The axial adjustment mechanism includes a stepper motor 1, a mechanical arm, an optical axis and a housing base, wherein one end face of the housing base is connected to one end of the mechanical arm, and the other end of the mechanical arm is connected to the other end face of the clamping base, and the optical axis connects the clamping base to the housing base through a connecting seat, and the stepper motor 1 at the upper end of the mechanical arm drives the mechanical arm to drive the housing base to move axially; The rotary positioning unit comprises a circumferential rotating mechanism and a positioning mechanism, wherein the positioning mechanism is mounted on the circumferential rotating mechanism, and the circumferential rotating mechanism is mounted on the axial adjusting mechanism, and the operating system is mounted on the lead-lined high-voltage cable accessories and the cable corrugated aluminum sheath on the circumferential rotating mechanism through the positioning mechanism; The circumferential rotation mechanism includes a second stepping motor, a driving gear, a turntable, a rotating pressure plate and a fixed slot box. The turntable is installed in the housing base. The second stepping motor drives the driving gear to rotate and drive the turntable to rotate. The driving gear and the turntable are connected to the housing base through the rotating pressure plate and the fixed slot box. The positioning mechanism includes a third stepper motor, a mounting plate and a guide rail assembly. The mounting plate is mounted on the turntable. The heating mechanism is mounted on the mounting plate through the guide rail assembly. The third stepper motor drives the lifting screw to drive the operating system connected to the guide rail assembly to slide.

7. A lead-plating process using the automatic lead-plating machine for high-voltage cable accessories and cable corrugated aluminum sheaths according to claim 1, characterized in that: The following steps are involved: Step 1: Fix and clamp one end of the processed cable through the radial clamping mechanism, and pass the other end through the axial adjustment mechanism. The high-voltage cable accessories are sleeved on the corrugated aluminum sheath of the cable; Step 2: The control module controls the axial adjustment mechanism to adjust the lead-plated position of the high-voltage cable accessories and the cable corrugated aluminum sheath to be located at the lower end of the copper-clad mesh sealing element; Step 3: The control module controls the circumferential rotating mechanism to drive the operating system to rotate and lead the high-voltage cable accessories and the cable corrugated aluminum sheath; Step 4: Place the lead material in the center hole 1 of the fixed base of the spiral wire feeding mechanism and wrap it around the center of the three sets of rubber-coated rollers; Step 5: The control module servo controls the heating temperature of the coating heating wire inside the coating heating head to heat the copper mesh sealing element welded at the lower end of the coating heating head; Step 6: The control module servo controls the hollow stepper motor to drive, and the hollow shaft of the hollow stepper motor drives the fixed base to rotate. The lead material is fed downward by the friction generated by the rotation of three sets of rubber-coated rollers; Step 7, the lead material is sequentially inserted into the air shaft, the quartz sleeve inside the intermediate frequency heating protection seat and the central hole 3 inside the coating heating head; Step 8: The control module servo controls the heating temperature of the intermediate frequency heating coil inside the intermediate frequency heating protection seat to heat the lead material, and the heating temperature range is 180°C-200°C. The temperature sensor on the quartz sleeve inside the intermediate frequency heating protection seat feeds back the heating temperature to the control module in real time; Step 9: The lead material is heated by the medium frequency heating coil and flows out through the lead material flow hole to lead the high-voltage cable accessories and the cable corrugated aluminum sheath. The pressure-sensitive element installed in the pressure-sensitive element slot at the bottom of the coating heating head monitors the pressing force value of the copper mesh sealing element and the cable corrugated aluminum sheath during the lead-enameling process in real time and feeds back to the control module; Step 10: Apply the softened lead material on the corrugated aluminum sheath of the cable. Repeat the operation until the thickness of the lead material reaches the required size. The lead plating is completed and the process begins to cool and set.

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