Cross-linked polyethylene insulated cable cabling equipment

Abstract

This cross-linked polyethylene insulated cable cabling equipment relates to the technical field of specialized cable manufacturing equipment. The monitoring mechanism utilizes an inlet sleeve with a energizing component at the outlet drum inlet. When the insulated wire core passes through normally, the two energizing bodies are isolated. When the insulated wire core is depleted, the two energizing bodies contact and form a circuit, triggering the controller to immediately stop the drive motor and traction device, preventing ineffective twisting. The clamping mechanism uses pneumatically driven clamping blocks. During normal operation, the insulated wire core contacts the rollers, keeping the clamping blocks open. In the event of a wire breakage, the clamping blocks quickly close under spring action, clamping the insulated wire core and preventing it from swinging and causing equipment or personnel damage. This equipment achieves dual safety protection through a linkage design, including automatic shutdown and wire core locking, effectively improving the safety and production continuity of the cabling operation.

Description

Technical Field

[0001] This invention relates to the field of specialized equipment for manufacturing cables. Background Art

[0002] In the manufacturing process of cross-linked polyethylene (XLPE) insulated cables, the cabling equipment and processes are crucial in determining the cable's structural integrity and performance stability. Cabling equipment is mainly used to strand multiple insulated cores or shielding layers into a cable core according to design requirements, and to complete processes such as filling and wrapping. However, existing monitoring methods for cabling equipment have some shortcomings. Taking the cabling of a three-core XLPE cable as an example, existing cabling machines load the three-phase insulated cores into the corresponding pay-off reels of the winch, using the pay-off system to pull the insulated cores and the winch to rotate for stranding. Operators typically rely on visual inspection to determine whether the insulated cores on each pay-off reel are used up, and then manually control the winch and pay-off system to stop. This is prone to human error, where the remaining insulated cores continue to be stranded even when a phase's insulated core is exhausted, resulting in ineffective stranded sections in the stranded cable, wasting materials. Furthermore, when an insulated core breaks, its free end is easily violently flung during rotation, potentially causing injury to equipment and personnel. Summary of the Invention

[0003] In view of this, the present invention provides a cross-linked polyethylene insulated cable forming device that can automatically stop twisting when the insulated wire core is exhausted, thereby reducing material waste and preventing the insulated wire core from being torn and flung.

[0004] To achieve the above objectives, the present invention provides the following technical solutions.

[0005] A cross-linked polyethylene insulated cable forming device includes a base, a winch, a drive motor, a stranding die, and a traction device. The winch includes a main shaft, a rear rotary disc, and at least two wire feeding assemblies. The rear rotary disc has at least two wire exit drums, each corresponding to a wire feeding assembly. Each wire exit drum has an inlet and an outlet. The traction device pulls insulated wire cores from the wire feeding assemblies, sequentially passing them through the inlet and outlet of the wire exit drums and through the stranding die for stranding. The wire exit drums also include a monitoring mechanism for detecting whether insulated wire cores are passing through and a clamping mechanism for clamping the insulated wire cores. The monitoring mechanism includes:

[0006] The controller is used to control the start and stop of the drive motor and traction device;

[0007] The inlet sleeve is located at the entrance of the outlet sleeve. Inside it are horizontal holes for the insulated wire core to pass through and two vertical holes perpendicular to the horizontal holes, with the two vertical holes facing each other.

[0008] The power connection assembly has two sets installed in two vertical holes, including a power connection body and a first elastic element. The two power connection bodies are electrically connected to the controller through wires. The first elastic element is connected to the power connection body to apply a spring force to the power connection body pointing towards the axis of the horizontal hole. When the insulated wire core passes through the horizontal hole, it separates the two power connection bodies. When the two power connection bodies come into contact, a circuit is formed so that the controller can control the drive motor and traction device to stop.

[0009] The wire clamping mechanism includes:

[0010] A wire clamping sleeve is located inside the wire outlet sleeve and behind the wire inlet sleeve. It has a wire clamping cavity and at least two sliding cavities evenly arranged around the wire clamping cavity. The sliding cavities are connected to an external air source.

[0011] The clamping assembly has at least two sets, including a clamping block and a second elastic member. The upper part of the clamping block is slidably connected to the sliding cavity, and the lower part of the clamping block extends into the clamping cavity. The second elastic member is connected to the clamping block to apply an elastic force to the clamping block in the direction of the clamping cavity. The lower part of the clamping block is provided with a roller for contacting the insulated wire core. The roller protrudes from the surface of the clamping block that contacts the insulated wire core, and the roller is located at one end near the inlet sleeve.

[0012] By setting up a monitoring mechanism, when the insulated wire core passes through the inlet sleeve, it naturally pushes the two energized bodies apart, physically separating them. When the insulated wire core of a certain phase is exhausted, the first elastic element pushes the two energized bodies to contact and form a circuit, triggering the controller to send a signal to control the drive motor and traction device to stop immediately, preventing the twisting from continuing and resulting in ineffective twisting. By setting up a wire clamping mechanism, after the insulated wire core passes through the inlet sleeve, it first contacts the roller, keeping each clamping block open. When the insulated wire core of a certain phase is exhausted, the roller disengages from the insulated wire core, and the clamping blocks immediately close under the action of the second elastic element, clamping the insulated wire core moving towards the outlet of the wire drum, preventing the insulated wire core from being thrown by the winch after it comes out, thus preventing damage to equipment or personnel.

[0013] The wire clamping mechanism also includes a sliding collar and a third elastic element. The sliding collar is sleeved on the outside of the wire clamping sleeve and is rotatably connected to the wire clamping sleeve. The sliding collar is provided with a protrusion, and the wire outlet tube is provided with a sliding groove that cooperates with the protrusion. The protrusion is inserted into the sliding groove so that the wire clamping mechanism can slide along the sliding groove. The third elastic element is connected to the wire clamping mechanism to apply a forward reset elastic force to the wire clamping mechanism.

[0014] Because the traction device cannot stop instantly due to inertia, it will continue to pull the insulated wire core a certain distance after receiving a stop signal from the controller. This may cause the clamped insulated wire core to break and be thrown out, resulting in a safety accident caused by it hitting personnel or equipment. By setting a sliding collar and a sliding groove, the wire clamping mechanism can slide a certain distance along the wire outlet drum after clamping the insulated wire core to buffer the situation and avoid the traction device from continuing to pull due to inertia and breaking the insulated wire core during the stopping process.

[0015] The clamping block has multiple interlocking teeth on its contact surface with the insulated wire core. Because the outer surface of the insulated wire core is relatively smooth, slippage may occur at the contact surface during high-speed traction, leading to unstable clamping. By adding interlocking teeth to the contact surface of the clamping block, the teeth can embed into the surface of the insulated wire core during clamping, improving the clamping effect and reducing slippage.

[0016] The clamping mechanism includes a front air-jet end cap and a rear air-jet end cap. The front air-jet end cap is installed on the front end face of the clamping sleeve, and the rear air-jet end cap is installed on the rear end face of the clamping sleeve. The front and rear air-jet end caps are respectively provided with a first air passage and a second air passage connecting to an external air source. Each of the first and second air passages has at least two desiccant nozzles spaced apart, aimed at the surface of the clamping block that contacts the insulated wire core. Because the clamping teeth of the clamping block may scrape off surface debris from the insulated wire core during clamping, this debris can adhere to the surface of the clamping block, preventing it from clamping tightly in subsequent clamping operations. It may also be carried into the stranding die along with the insulated wire core during the next stranding operation, resulting in it being stranded into the cable after cabling and reducing the quality of the cable. By setting up the front and rear air-jet end caps and using the desiccant nozzles to blow air clean the surface of the clamping block, the impact of debris on subsequent clamping and stranding operations is reduced.

[0017] The clamping cavity is equipped with protrusions spaced apart to block the chip-blowing nozzles. The chip-blowing nozzles of the first and second air passages are staggered. The front end face of the clamping sleeve has an annular groove containing a fixed blade. The first air passage has a blade nozzle aligned with the fixed blade. If the chip-blowing nozzles on both sides spray air simultaneously, the debris on the surface of the clamping block may not be blown out of the clamping cavity smoothly and may remain inside. By using the spaced protrusions and staggered chip-blowing nozzles within the clamping cavity, the external air source propels the clamping sleeve to rotate. As the clamping sleeve rotates, the protrusions alternately open the chip-blowing nozzles on both sides, allowing for alternating airflow for cleaning, thus achieving a better cleaning effect.

[0018] The conductor is covered with an insulating layer and has a connecting terminal at its end. The contact element includes:

[0019] Conductive ball bearings are used to make contact with insulated wire cores;

[0020] A ball push rod is used to install conductive balls. Its bottom is connected to the first elastic element, and the ball push rod has an internal cavity.

[0021] A connecting conductor is used to connect the wire and the conductive ball. The connecting conductor is disposed in the middle cavity and can slide. A fourth elastic element is provided at the bottom of the connecting conductor to push the connecting conductor to abut against the conductive ball. The connecting conductor has an inner cavity. The wire is inserted into the inner cavity and kept fixed so that the connecting conductor can slide relative to the wire.

[0022] A connecting spring, used to make contact with the connecting terminal for conducting electricity, is located in the inner cavity and sleeved on the wire. One end of the connecting spring is connected to the connecting conductor, and the other end extends along the wire and is separated from the connecting terminal.

[0023] When the insulated wire core passes through the inlet sleeve, if the contacting body (conductive balls) remains energized, static electricity will accumulate on the surface of the insulated wire core. This allows dust and other impurities from the environment to adhere to the insulated wire core, reducing the quality of the cable. By incorporating connecting conductors and connecting springs, the two conductive balls are kept disconnected from the wire before they come into contact with each other, ensuring that no voltage is applied to the surface of the insulated wire core and preventing static electricity accumulation.

[0024] The transverse hole is equipped with multiple lubricating balls. This converts sliding friction into rolling friction, reducing the frictional force when the insulated wire core passes through the inlet sleeve, making the passage of the insulated wire core smoother and reducing the resistance encountered by the traction device. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the cross-linked polyethylene insulated cable cabling equipment of the present invention.

[0026] Figure 2 This is a three-dimensional structural schematic diagram of the cross-linked polyethylene insulated cable cabling equipment of the present invention from another perspective.

[0027] Figure 3 This is a front view of the cross-linked polyethylene insulated cable cabling equipment of the present invention.

[0028] Figure 4 For along Figure 3 Partial sectional view along the AA direction.

[0029] Figure 5 This is an exploded view of the winch section structure.

[0030] Figure 6 This is a cross-sectional view of the wire clamping mechanism.

[0031] Figure 7 This is a cross-sectional view of the monitoring agency.

[0032] Figure 8 This is a three-dimensional sectional view of the rear rotating disk with the cover hidden.

[0033] Figure 9This is an exploded view of the wire clamping mechanism.

[0034] Figure 10 This is a schematic diagram of the three-dimensional structure of the clamping block.

[0035] Figure 11 This is a three-dimensional structural diagram of the front and rear jet end caps.

[0036] Figure 12 This is a three-dimensional sectional view of the electrical contact.

[0037] The reference numerals in the figures include:

[0038] Winch 1, main shaft 11, conductive sheet 111, rotary joint 112, brush ring 113, brush rod 114, rear rotary disk 12, cable outlet drum 121, drum cover 1211, slide groove 1212, disc cover 122, front rotary disk 13, cable feeding assembly 14.

[0039] Monitoring mechanism 2, inlet sleeve 21, horizontal hole 211, lubrication ball 2111, vertical hole 212, electrical contact 22, conductive ball 221, ball push rod 222, intermediate cavity 223, connecting conductor 224, inner cavity 2241, fourth elastic element 225, connecting spring 226, fixed flange 227, first elastic element 23, third air passage 24;

[0040] The wire clamping mechanism 3, wire clamping sleeve 31, wire clamping cavity 311, protrusion 3111, sliding cavity 312, annular groove 313, fixed blade 314, wire clamping block 315, roller 3151, meshing tooth 3152, second elastic element 316, sliding collar 32, protrusion 321, exhaust hole 3211, third elastic element 33, front jet end cap 34, first air passage 341, rear jet end cap 35, second air passage 351, chip blowing nozzle 36, blade nozzle 37, air guide ring 38, groove 381;

[0041] Base 4, drive motor 5, transmission belt 51, stranding mold 6, insulated wire core 7, wire 8, connecting terminal 81, air pipe 9. Detailed Implementation

[0042] The invention will be described in detail below with reference to specific embodiments.

[0043] Combination Figures 1-5 The cross-linked polyethylene insulated cable forming equipment of this embodiment includes a base 4, a winch 1, a drive motor 5, a stranding mold 6, and a traction device (not shown in the figure). Figure 3 , Figure 5The winch 1 includes a main shaft 11, a front rotating disk 13, a rear rotating disk 12, and three wire feeding assemblies 14. The rear rotating disk 12 is equipped with a disk cover 122 and three wire output tubes 121. Each wire output tube 121 corresponds to one of the wire feeding assemblies 14 and has an inlet, an outlet, and a tube cover 1211. Figure 1 The traction device pulls the insulated wire core 7 from the wire feeding assembly 14 through the inlet and outlet of the wire outlet drum 121 and into the stranding die 6. The drive motor 5 is connected to the main shaft 11 via the transmission belt 51 to drive the winch 1 to rotate for stranding. See [link to relevant documentation]. Figure 5 The outlet drum 121 is also equipped with a monitoring mechanism 2 for detecting whether an insulated wire core 7 has passed through and a clamping mechanism 3 for clamping the insulated wire core 7. When the monitoring mechanism 2 detects that the insulated wire core 7 passing through the outlet drum 121 is exhausted or missing, it controls the drive motor 5 and the traction device to stop, while the clamping mechanism 3 automatically clamps the insulated wire core 7 that is still in the outlet drum 121.

[0044] Combination Figures 4-8 The monitoring mechanism 2 includes a controller (not shown in the figure), an inlet sleeve 21, and a power connection assembly. The controller, such as an STM32 or PLC, is used to control the start and stop of the drive motor 5 and the traction device. The inlet sleeve 21 is located at the inlet of the outlet sleeve 121 and is fixedly connected to the rear rotating disk 12. (See [reference needed]). Figure 7 The inlet sleeve 21 has a horizontal hole 211 for the insulated wire core 7 to pass through and two vertical holes 212 perpendicular to the horizontal hole 211. The two vertical holes 212 are arranged opposite each other. There are two sets of electrical connection components, which are installed in the two vertical holes 212 respectively. Each set of electrical connection components includes one electrical contact body 22 and one first elastic member 23. The two electrical contact bodies 22 of the two sets of electrical connection components are electrically connected to the controller through wires 8. The first elastic member 23 is connected to the electrical contact body 22 to apply a spring force to the electrical contact body 22 pointing towards the axis of the horizontal hole 211. When the insulated wire core 7 passes through the horizontal hole 211, it separates the two electrical contact bodies 22. When the insulated wire core 7 is missing, the two electrical contact bodies 22 come into contact with each other under the push of the spring force of the first elastic member 23 to form a circuit. The controller receives the electrical signal and controls the drive motor 5 and the traction device to stop. In addition, the inlet sleeve 21 is provided with a third air passage 24 that connects to an external air source. The third air passage 24 is connected to the external air source through the air pipe 9 and is connected to the vertical hole 212. When initially loading the insulated wire core 7, the two electrical contacts 22 can be opened first by using the external air source, and then the insulated wire core 7 can be passed through the inlet sleeve 21.

[0045] like Figure 9 As shown, the wire clamping mechanism 3 includes a wire clamping sleeve 31 and a clamping assembly. Combined with... Figure 4 , Figure 6 and Figure 8The wire clamping sleeve 31 is located inside the outlet sleeve 121 and behind the inlet sleeve 21. The wire clamping sleeve 31 is provided with an annular groove 313, which is connected to an external air source. Figure 6 and Figure 9 The wire clamping sleeve 31 has a wire clamping cavity 311 inside and four sliding cavities 312 evenly arranged around the wire clamping cavity 311. The lower cavity of the sliding cavity 312 communicates with the annular groove 313, and the upper cavity of the sliding cavity 312 communicates with the outside. There are two sets of clamping assemblies. Each set of clamping assemblies includes two wire clamping blocks 315 and two second elastic members 316. The upper part of the wire clamping block 315 is slidably connected to the sliding cavity 312, and the lower part of the wire clamping block 315 extends into the wire clamping cavity 311. The second elastic members 316 are connected to the wire clamping block 315 to apply an elastic force to the wire clamping block 315 pointing towards the wire clamping cavity 311. The lower part of the wire clamping block 315 is provided with a roller 3151 for contacting the insulated wire core 7. The roller 3151 protrudes from the surface of the wire clamping block 315 that contacts the insulated wire core 7, and the roller 3151 is located at one end near the wire inlet sleeve 21. Under normal conditions, the insulated wire core 7 is in contact with each roller 3151. Each roller 3151 lifts the clamping block 315, allowing the insulated wire core 7 to be normally pulled through the clamping sleeve 31. When the insulated wire core 7 is exhausted, its free end is pulled into the clamping sleeve 31. After the free end of the insulated wire core 7 disengages from the roller 3151, each clamping block 315 loses the support of the roller 3151 and the insulated wire core 7, and under the push of the second elastic element 316, converges towards the clamping cavity 311, thus clamping and securing the insulated wire core 7 that has not yet detached from the clamping cavity 311. When it is necessary to remove or load the insulated wire core 7, an external air source can be used to drive each clamping block 315 to open. By setting up the clamping mechanism 3, the insulated wire core 7 first contacts the roller 3151 after passing through the inlet sleeve 21, so that each clamping block 315 remains open. When the insulated wire core 7 of a certain phase is exhausted, the roller 3151 disengages from the insulated wire core 7, and the clamping block 315 immediately closes under the action of the second elastic element 316 to clamp the insulated wire core 7 moving towards the outlet of the outlet drum 121, so as to prevent the insulated wire core 7 from being thrown by the winch 1 after it comes out and injuring the equipment or personnel.

[0046] Combination Figure 4 , Figure 5 and Figure 8Two conductive plates 111 are fitted at one end of the main shaft 11 connected to the rear rotating disk 12. The conductive plates 111 are fixedly connected to the main shaft 11 so as to rotate synchronously with the main shaft 11. The two electrical contacts 22 of each monitoring mechanism 2 are connected to the two conductive plates 111 through wires 8 according to the positive and negative polarities. For example, all electrical contacts 22 connected to the positive terminal of the controller are connected to the same conductive plate 111, and all electrical contacts 22 connected to the negative terminal of the controller are connected to another conductive plate 111. Two brush rings 113 are fitted at the other end of the main shaft 11. The brush rings 113 are fixedly connected to the main shaft 11 so as to rotate synchronously with the main shaft 11. The conductive plates 111 and the brush rings 113 are connected one-to-one through wires 8. A brush rod 114 matching the brush rings 113 is also provided. The brush rod 114 is provided with two connected brushes, and the two brushes abut against the two brush rings 113 one-to-one. The controller can be installed at the brush rod 114 without rotating with the winch 1. In this way, as long as the two terminals 22 of any monitoring mechanism 2 are in contact with each other, that is, regardless of which phase's insulated core 7 is missing, a circuit can be formed through the conductive sheet 111 and brush ring 113, allowing the controller to stop the drive motor 5 and traction device. See also... Figure 2 The main shaft 11 is provided with a connecting air passage (not shown in the figure). A rotary joint 112 is provided at the inlet of the connecting air passage. The rotary joint 112 is connected to an external air source and can maintain the connection with the external air source during rotation. The outlet of the connecting air passage (not shown in the figure) is located at the end where the main shaft 11 is connected to the rear rotating disk 12 (the first air passage 341 and the second air passage 351 mentioned below are both connected to the outlet through the air pipe 9).

[0047] By setting up the monitoring mechanism 2, when the insulated wire core 7 passes through the inlet sleeve 21, it naturally pushes the two energized bodies 22 apart, physically separating them. When the insulated wire core 7 of a certain phase is exhausted, the first elastic element 23 pushes the two energized bodies 22 to contact and form a circuit, triggering the controller to send a signal to control the drive motor 5 and traction device to stop immediately, preventing the twisting from continuing and resulting in invalid twisting. Of course, a photoelectric sensor can also be used to detect the insulated wire core 7 in the inlet sleeve, but the wiring of the photoelectric sensor is more complicated under rotating conditions, and each outlet sleeve 121 needs to be wired individually. In contrast, the present invention, by setting up a wiring structure such as a conductive sheet 111 and a brush ring 113, is more compact and is not affected by the rotation of the winch 1.

[0048] Because the traction device cannot stop instantly due to inertia, even after receiving a stop signal from the controller, it will still move the insulated wire core 7 a certain distance. This could potentially cause the clamped insulated wire core 7 to break off and be thrown out, potentially hitting personnel or equipment and causing a safety accident. Figure 4 and Figure 9The wire clamping mechanism 3 also includes a sliding collar 32 and a third elastic element 33. The sliding collar 32 is sleeved on the outside of the wire clamping sleeve 31 and is rotatably connected to the wire clamping sleeve 31, allowing the wire clamping sleeve 31 to rotate relative to the sliding collar 32. The sliding collar 32 is provided with a protrusion 321, and the protrusion 321 is provided with a vent hole 3211 communicating with the outside. Figure 5 The cable outlet spool 121 is provided with a sliding groove 1212 that mates with the protrusion 321. The protrusion 321 is inserted into the sliding groove 1212, allowing the cable clamping mechanism 3 to slide along the sliding groove 1212. The sliding collar 32 also includes an air guide ring 38, which is provided with a groove 381 for venting. The groove 381 communicates with the vent hole 3211. Figure 6 The upper cavity of the sliding cavity 312 is connected to the exhaust port 3211 through the groove 381. The third elastic element 33 is connected to the wire clamping mechanism 3 to apply a forward reset elastic force to the wire clamping mechanism 3. When the free end of the insulated wire core 7 is clamped and held by the wire clamping block 315, the entire wire clamping mechanism 3 can slide a distance along the groove 1212 of the wire outlet drum 121 with the cooperation of the sliding collar 32 and the sliding groove 1212. By setting the sliding collar 32 and the sliding groove 1212, the wire clamping mechanism 3 can slide a distance along the wire outlet drum 121 after clamping the insulated wire core 7 for buffering, avoiding the situation where the traction device continues to pull due to inertia and breaks the insulated wire core 7 during the shutdown process.

[0049] Because the outer surface of the insulated core 7 is relatively smooth, slippage may occur between the contact surfaces of the clamping blocks 315 and the insulated core 7 during the clamping process, resulting in unstable clamping. (See also...) Figure 10 The surface of the clamping block 315 that contacts the insulated wire core 7, i.e., the lower surface of the clamping block 315, is provided with multiple engagement teeth 3152. By adding engagement teeth 3152 to the contact surface of the clamping block 315, the engagement teeth 3152 can be embedded into the surface of the insulated wire core 7 when clamping the wire, thereby improving the clamping effect of the clamping block 315 and reducing the slippage of the clamping block 315 when clamping the insulated wire core 7.

[0050] Because the clamping teeth 3152 of the clamping block 315 may scrape off surface debris from the insulated wire core 7 when clamping it, these debris will adhere to the surface of the clamping block 315, making it impossible to clamp tightly in the next clamping operation. These debris may also be carried into the stranding die 6 with the insulated wire core 7 during the next stranding operation, resulting in it being stranded into the cable after cabling, thus reducing the quality of the cable. Combined with... Figure 6 , Figure 9 and Figure 11 The clamping mechanism 3 also includes a front jet end cap 34 and a rear jet end cap 35, see [link / reference] Figure 6The front jet end cap 34 is installed on the front end face of the wire clamping sleeve 31, and the rear jet end cap 35 is installed on the rear end face of the wire clamping sleeve 31. The front jet end cap 34 and the rear jet end cap 35 are respectively provided with a first air passage 341 and a second air passage 351 connecting to an external air source. Figure 6 and Figure 11 Each of the first air passage 341 and the second air passage 351 is provided with four chip-blowing nozzles 36 spaced apart, and each chip-blowing nozzle 36 is aimed at the surface of the wire clamping block 315 in contact with the insulated wire core 7. By setting a front air jet end cap 34 and a rear air jet end cap 35, the chip-blowing nozzles 36 are used to blow air to clean the surface of the wire clamping block 315 in contact with the insulated wire core 7, reducing the impact of debris on the next clamping and stranding.

[0051] If the blow-off nozzles 36 on both sides blow air simultaneously, the debris on the surface of the wire clamping block 315 may not be able to be blown away from the wire clamping cavity 311 smoothly, and may instead remain inside the wire clamping cavity 311. See Figure 9 The clamping cavity 311 has four protrusions 3111 spaced apart, see [reference]. Figure 11 Each chip-blowing nozzle 36 is staggered, and the interval angle of each chip-blowing nozzle 36 is consistent with the interval angle of each protrusion 3111. The front end face of the wire clamping sleeve 31 is provided with an annular groove 313, and a fixed blade 314 is provided in the annular groove 313. The first air passage 341 is provided with a blade nozzle 37 aligned with the fixed blade 314. When an external air source blows air into the first air passage 341 and the second air passage 351, each chip-blowing nozzle 36 ejects airflow. At the same time, the blade nozzle 37 ejects airflow into the fixed blade 314. Driven by the airflow, the fixed blade 314 drives the wire clamping sleeve 31 to rotate. Each protrusion 3111 alternately passes through the chip-blowing nozzle 36 of the first air passage 341 and the second air passage 351 as the wire clamping sleeve 31 rotates, thereby causing the chip-blowing nozzles 36 on both sides to be alternately opened and blocked, performing alternating air jet cleaning. By setting protrusions 3111 at intervals and staggered chip blowing nozzles 36 in the wire clamping cavity 311, the thrust of the external air source pushes the wire clamping sleeve 31 to rotate. When the wire clamping sleeve 31 rotates, the protrusions 3111 alternately open the chip blowing nozzles 36 on both sides, and the chip blowing nozzles 36 on both sides alternately blow air to clean, thereby achieving a better cleaning effect.

[0052] If the contactor 22 remains energized when the insulated core 7 passes through the inlet sleeve 21, static electricity will accumulate on the surface of the insulated core 7. This static electricity will cause dust and other impurities in the environment to be attracted to the surface of the insulated core 7, reducing the quality of the cable. See details below. Figure 7 , Figure 12The conductor 8 is covered with an insulating layer, and its end is provided with a connecting terminal 81. The contact body 22 includes a conductive ball 221, a ball push rod 222, a connecting conductor 224, a connecting spring 226, and a fixing flange 227. The conductive ball 221 is embedded in the top of the ball push rod 222 for contact with the insulated wire core 7. The bottom of the ball push rod 222 is connected to the first elastic member 23, and the ball push rod 222 has an internal intermediate cavity 223. A connecting conductor 224 is used to connect the wire 8 and the conductive ball 221. The connecting conductor 224 is located within the intermediate cavity 223 and can slide. A fourth elastic element 225 is provided at the bottom of the connecting conductor 224. A fixing flange 227 is used to support the fourth elastic element 225. The fourth elastic element 225 is connected to the bottom of the fixing flange 227 and the top of the connecting conductor 224 respectively, so as to push the connecting conductor 224 to abut against the conductive ball 221. The connecting conductor 224 has an inner cavity 2241. The wire 8 is inserted into the inner cavity 2241 and kept fixed, so that the connecting conductor 224 can slide relative to the wire 8. The connecting spring 226 is made of conductive material. The connecting spring 226 is located in the inner cavity 2241 and sleeved on the wire 8. One end of the connecting spring 226 is connected to the connecting conductor 224, and the other end extends along the wire 8 and is separated from the connecting terminal 81.

[0053] Combination Figure 4 , Figure 7 and Figure 12 When the insulated wire core 7 passes through the inlet sleeve 21, the conductive balls 221 in the two vertical holes 212 contact the insulated wire core 7, the ball push rod 222 is lifted, and the connecting terminal 81 and the connecting spring 226 move away from each other. When the insulated wire core 7 is missing from the inlet sleeve 21, under the action of the first elastic element 23, the ball push rod 222 and the conductive balls 221 in the two vertical holes 212 are pushed down, and the connecting terminal 81 and the connecting spring 226 move closer to each other until they make contact. The electrical signal of the wire 8 is conducted from the connecting terminal 81, through the connecting spring 226 and the connecting conductor 224 to the conductive balls 221. When the two conductive balls 221 contact each other, a connected circuit is formed. By setting the connecting conductor 224 and the connecting spring 226, the two conductive balls 221 are kept disconnected from the wire 8 before they come into contact with each other, ensuring that no voltage is applied to the surface of the insulated wire core 7 and avoiding the accumulation of static electricity.

[0054] See Figure 7 The transverse hole 211 is provided with multiple lubrication balls 2111. This reduces the friction of the insulated wire core 7 when it passes through the inlet sleeve 21, making the passage of the insulated wire core 7 smoother and reducing the resistance encountered by the traction device.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions created by the present invention, and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions created by the present invention without departing from the essence and scope of the technical solutions created by the present invention.

Claims

1. A cross-linked polyethylene insulated cable forming device, comprising a base, a winch, a drive motor, a stranding die, and a traction device. The winch includes a main shaft, a rear rotary disc, and at least two wire feeding assemblies. The rear rotary disc has at least two wire output drums, each corresponding to one of the wire feeding assemblies. Each wire output drum has an inlet and an outlet. The traction device pulls insulated wire cores from the wire feeding assemblies, sequentially passing them through the inlet and outlet of the wire output drums and the stranding die for stranding. The device is characterized in that... The outlet drum is also equipped with a monitoring mechanism for detecting whether an insulated wire core is passing through and a wire clamping mechanism for clamping the insulated wire core; Monitoring agencies include: The controller is used to control the start and stop of the drive motor and traction device; The inlet sleeve is located at the entrance of the outlet sleeve. Inside it are horizontal holes for the insulated wire core to pass through and two vertical holes perpendicular to the horizontal holes, with the two vertical holes facing each other. The power connection assembly has two sets installed in two vertical holes, including a power connection body and a first elastic element. The two power connection bodies are electrically connected to the controller through wires. The first elastic element is connected to the power connection body to apply a spring force to the power connection body pointing towards the axis of the horizontal hole. When the insulated wire core passes through the horizontal hole, it separates the two power connection bodies. When the two power connection bodies come into contact, a circuit is formed so that the controller can control the drive motor and traction device to stop. The wire clamping mechanism includes: A wire clamping sleeve is located inside the wire outlet sleeve and behind the wire inlet sleeve. It has a wire clamping cavity and at least two sliding cavities evenly arranged around the wire clamping cavity. The sliding cavities are connected to an external air source. The clamping assembly has at least two sets, including a clamping block and a second elastic member. The upper part of the clamping block is slidably connected to the sliding cavity, and the lower part of the clamping block extends into the clamping cavity. The second elastic member is connected to the clamping block to apply an elastic force to the clamping block in the direction of the clamping cavity. The lower part of the clamping block is provided with a roller for contacting the insulated wire core. The roller protrudes from the surface of the clamping block that contacts the insulated wire core and is located at one end near the inlet sleeve.

2. The cross-linked polyethylene insulated cable forming equipment as described in claim 1, characterized in that, The wire clamping mechanism also includes a sliding collar and a third elastic element. The sliding collar is sleeved on the outside of the wire clamping sleeve and is rotatably connected to the wire clamping sleeve. The sliding collar is provided with a protrusion, and the wire outlet tube is provided with a sliding groove that cooperates with the protrusion. The protrusion is inserted into the sliding groove so that the wire clamping mechanism can slide along the sliding groove. The third elastic element is connected to the wire clamping mechanism to apply a forward reset elastic force to the wire clamping mechanism.

3. The cross-linked polyethylene insulated cable forming equipment as described in claim 1, characterized in that, The surface of the clamping block that contacts the insulated wire core is provided with multiple interlocking teeth.

4. The cross-linked polyethylene insulated cable forming equipment as described in claim 3, characterized in that, The wire clamping mechanism also includes a front jet end cap and a rear jet end cap. The front jet end cap is installed on the front end face of the wire clamping sleeve, and the rear jet end cap is installed on the rear end face of the wire clamping sleeve. The front jet end cap and the rear jet end cap are respectively provided with a first air passage and a second air passage that connects to an external air source. The first air passage and the second air passage are each provided with at least two chip blowing nozzles at intervals. The chip blowing nozzles are aligned with the surface of the wire clamping block that contacts the insulated wire core.

5. The cross-linked polyethylene insulated cable forming equipment as described in claim 4, characterized in that, The wire clamping cavity is provided with protrusions at intervals for blocking the chip blowing nozzles. The chip blowing nozzles of the first air passage and the second air passage are staggered. The front end face of the wire clamping sleeve is provided with an annular groove, and a fixed blade is provided in the annular groove. The first air passage is provided with a blade nozzle aligned with the fixed blade.

6. The cross-linked polyethylene insulated cable forming equipment as described in claim 1, characterized in that, The conductor is covered with an insulating layer and has a connecting terminal at its end. The contact element includes: Conductive ball bearings are used to contact the insulated wire core. A ball push rod is used to install conductive balls. Its bottom is connected to the first elastic element, and the ball push rod has an internal cavity. A connecting conductor is used to connect the wire and the conductive ball. The connecting conductor is disposed in the middle cavity and can slide. A fourth elastic element is provided at the bottom of the connecting conductor to push the connecting conductor to abut against the conductive ball. The connecting conductor has an inner cavity. The wire is inserted into the inner cavity and kept fixed so that the connecting conductor can slide relative to the wire. A connecting spring, used to make contact with the connecting terminal for conducting electricity, is located in the inner cavity and sleeved on the wire. One end of the connecting spring is connected to the connecting conductor, and the other end extends along the wire and is separated from the connecting terminal.

7. The cross-linked polyethylene insulated cable forming equipment as described in claim 1, characterized in that, The transverse hole is equipped with multiple lubrication balls.

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