A tear-resistant, high-temperature fire-resistant cable and its manufacturing equipment

Abstract

This invention discloses a tear-resistant, high-temperature fireproof cable and its manufacturing equipment, relating to the field of cable manufacturing technology. An extrusion heating cylinder is equidistantly installed on one side of the top of a load-bearing positioning frame. An U-shaped inner hole frame is installed near one of the extrusion heating cylinders on the top of the load-bearing positioning frame. Several heat-mixing barrels are equidistantly clamped to one end of the load-bearing positioning frame at the location of the U-shaped inner hole frame. Simultaneous first-stage and second-stage extrusion are used, with multiple sets of limiting components working together to support, flatten, and embed the protective layer of the cable. This achieves smooth and uniform cable movement. Furthermore, the mutual extrusion of the insulation materials allows for interlocking, and the partially cooled internal insulation layer ensures full adhesion. This solves the problem in existing technologies where separate cable production prevents the internal materials from fully bonding with the external surface, thus effectively improving the cable's insulation, shielding, flame retardancy, and fire resistance.

Description

Technical Field

[0001] This invention relates to the field of cable manufacturing technology, specifically to a tear-resistant, high-temperature fire-resistant cable and its preparation equipment. Background Technology

[0002] A cable is a rope-like cable made up of several or several groups of conductors twisted together. Each group of conductors is insulated from each other, and the whole cable is covered with a highly insulating outer layer. Cables are characterized by internal current transmission and external insulation. There are power cables, control cables, compensating cables, shielded cables, high-temperature cables, etc. Cable production requires the combined operation of stranding equipment and extrusion equipment.

[0003] However, in the current production of flat cables, the gap between the inner insulation layer and the outer insulation layer is relatively long, and the inner layer loses its adhesiveness after curing, making it impossible for the inner and outer parts of the cable to fit tightly together. Furthermore, the addition of shielding and heat-insulating and flame-retardant materials in the middle makes them even easier to separate, resulting in severe delamination between the inner and outer parts of the cable, which affects the insulation, heat insulation, flame retardancy, and shielding effects. Summary of the Invention

[0004] This invention provides a tear-resistant, high-temperature fireproof cable and its preparation equipment, which can effectively solve the problems mentioned in the background art. In the production of flat cables, the long gap between the inner insulation layer and the outer insulation layer causes the inner layer to lose its adhesiveness after curing, resulting in the inability to tightly bond the inner and outer parts of the cable. Furthermore, the addition of shielding and heat-insulating and flame-retardant materials in the middle makes them even easier to separate, leading to severe delamination between the inner and outer parts of the cable, which affects the insulation, heat insulation, flame retardancy and shielding effects.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a tear-resistant, high-temperature fireproof cable manufacturing equipment, comprising a load-bearing positioning frame, wherein a double-layer processing component is provided at the top of the load-bearing positioning frame;

[0006] The double-layer processing assembly includes an extruded heating cylinder;

[0007] The load-bearing positioning frame is equipped with extruded heating cylinders at equal intervals on one side of its top end, and a C-shaped inner hole frame is installed on the top end of the load-bearing positioning frame near one of the extruded heating cylinders.

[0008] One end of the load-bearing positioning frame is equidistantly engaged with several hot mixing treatment barrels at the position of the C-shaped inner hole frame. The hot mixing treatment barrels are symmetrically equipped with lifting hydraulic cylinders on their side ends. The top ends of the two lifting hydraulic cylinders are fixed with positioning mounting sleeves. A dual-axis motor is mounted on the inside of the positioning mounting sleeves through a motor base. The bottom end of the output shaft of the dual-axis motor is engaged with a hot mixing unloading rack corresponding to the inside of the hot mixing treatment barrel.

[0009] The top of the hot mixing tank is fixedly connected to the feeding preheating tank, the top of the output shaft of the dual-shaft motor is clamped with a mixing plate, a steady feeding pipe is connected through the hot mixing tank and the feeding preheating tank, and multiple extrusion pipes are connected between one end of the multiple hot mixing tanks and one end of one of the extrusion heating cylinders.

[0010] An inner groove forming sleeve is fixedly connected to one side of the top of the load-bearing positioning frame, corresponding to the position of another extrusion heating cylinder. Multiple feed tubes are connected through the top and bottom of the inner groove forming sleeve. Several positioning electric push rods are equidistantly engaged at the top of the load-bearing positioning frame and the corresponding position of the inner groove forming sleeve. Several compression springs are equidistantly installed at the top and bottom of the inner side of the load-bearing positioning frame, corresponding to the positions of the positioning electric push rods. Several synchronous electric push rods are equidistantly installed at the inner side of the load-bearing positioning frame away from the positions of the compression springs. A compression rolling frame is fixed to one end of the compression spring and the synchronous electric push rod.

[0011] The top of the load-bearing positioning frame is equipped with a fitting inner hole box, and the top and bottom of the inner side of the fitting inner hole box are equipped with pressing electric push rods, and one end of the pressing electric push rod is equipped with an arc-shaped pressing plate.

[0012] The top and bottom of the load-bearing positioning frame are both fitted with irregularly shaped dividing frames. Several compression springs are fixedly connected at equal intervals on the inner side of the load-bearing positioning frame, and a rolling compression frame is installed on one end of each compression spring.

[0013] According to the above technical solution, the extrusion heating cylinder is symmetrically clamped with feeding hydraulic cylinders on the outside. One end of each of the two feeding hydraulic cylinders is fixedly connected to a limiting sleeve. A processing motor is installed on the inside of the limiting sleeve through a motor base. The output shaft of the processing motor is clamped with an auger extrusion frame. A preheating treatment cylinder is sleeved through the top of the extrusion heating cylinder. An adjustment motor is installed on the top of the preheating treatment cylinder through a motor base. A mixing rack is clamped on the bottom of the output shaft of the adjustment motor corresponding to the inside of the preheating treatment cylinder.

[0014] The side end of the load-bearing positioning frame is connected to a non-shaped transmission box, the output shaft of the non-shaped transmission box is connected to a linkage engagement tube, the side end of the linkage engagement tube is symmetrically equipped with a fitting electric push rod, one end of the fitting electric push rod is connected to a fitting extrusion plate, and one end of the C-shaped inner hole frame is equidistantly connected with several multi-port branch pipes at the position corresponding to the linkage engagement tube.

[0015] The top of the load-bearing positioning frame is snapped with a synchronous transmission box, the output shaft of the synchronous transmission box is sleeved with a winding rotating frame, and a transmission motor is installed on the top of the load-bearing positioning frame corresponding to the input shaft positions of the irregular transmission box and the synchronous transmission box through a motor base. Several return springs are symmetrically installed at equal intervals on the side end of the load-bearing positioning frame, and one end of the return spring is fixedly connected to an L-shaped swing rod.

[0016] One end of the load-bearing positioning frame is welded with an internally threaded tube at equal intervals. One end of the internally threaded tube is connected to a raised circular plate by a thread. A number of push springs are installed at equal intervals at the position corresponding to the internally threaded tube on one end of the load-bearing positioning frame. One end of each push spring is welded with an inner grooved circular plate.

[0017] According to the above technical solution, the auger extrusion rack is slidably installed inside the extrusion heating cylinder, the side end of the mixing rack is rotatably attached to the inner end of the preheating treatment cylinder, the hot mixing discharge rack is slidably installed inside the hot mixing treatment tank, and the mixing plate is rotatably installed inside the discharge preheating tank.

[0018] According to the above technical solution, the multi-segment extrusion pipe is installed through the side of the hot mixing tank, the linkage locking pipe is rotatably sleeved with the multi-port branch pipe, and the bonding extrusion plate is slidably installed inside the multi-port branch pipe.

[0019] According to the above technical solution, the winding rotating frame is rotatably installed inside the multi-port branch pipe, the output shafts of the two transmission motors are respectively engaged with the input shafts of the irregular transmission box and the synchronous transmission box, and one end of the L-shaped swing rod is rotatably engaged with the side end of the load-bearing positioning frame.

[0020] According to the above technical solution, the inner groove circular plate is slidably installed on the side end of the internal threaded pipe, and the arc-shaped pressing plate is slidably installed on the inner side of the fitting inner hole box.

[0021] The input ends of the extrusion heating cylinder, feeding hydraulic cylinder, processing motor, preheating cylinder, adjusting motor, hot mixing tank, lifting hydraulic cylinder, dual-axis motor, unloading preheating tank, bonding electric push rod, positioning electric push rod, synchronous electric push rod, pressing electric push rod, and drive motor are all electrically connected to the output end of the external controller.

[0022] The input terminal of the external controller is electrically connected to the output terminal of the external power supply.

[0023] According to the above technical solution, a cooling collection assembly is provided at the top of the load-bearing positioning frame;

[0024] The cooling collection assembly includes a collection motor;

[0025] A collecting motor is mounted on one side of the top of the load-bearing positioning frame via a motor base. The output shaft of the collecting motor is engaged with a U-shaped locking block. A clamping screw is mounted on one end of the load-bearing positioning frame. A fixing limiting sleeve is connected to the side end of the clamping screw via a screw seat. A collecting I-shaped frame is sleeved on the side end of the fixing limiting sleeve and the U-shaped locking block. A cooperating spring is mounted on one end of the load-bearing positioning frame. A pressing rotating frame is mounted on one end of the cooperating spring. A pressing column is rotatably sleeved on the side end of the pressing rotating frame.

[0026] Two cooling boxes are equidistantly installed at the bottom of the load-bearing positioning frame. An inner hole heat exchange box is fixedly connected to one side of the top of the load-bearing positioning frame. A cooling box is fixedly connected to one end of the inner hole heat exchange box. An injection cooling pipe is connected through the bottom of the inner hole heat exchange box. Liquid inlet treatment pipe racks are connected through the top and bottom of the cooling box. A return treatment pipe is connected through the top of the inner hole heat exchange box. A return collection pipe is connected through the top of the inner hole box and one end of the cooling box. A pump is installed on the top of the load-bearing positioning frame via a motor base at the position corresponding to the injection cooling pipe and the liquid inlet treatment pipe rack. A separation cooling box is fixedly connected to the top of the load-bearing positioning frame near the position of the pressing rolling frame. A circulating heat exchange pipe rack is fixedly connected to one end of the separation cooling box and the pressing rolling frame. A circulating pump is installed on the top of the load-bearing positioning frame via a motor base at the position corresponding to the position of the circulating heat exchange pipe rack.

[0027] The load-bearing positioning frame has symmetrically installed sliding closing boxes at the top center. Guide I-shaped wheels are equidistantly connected to the inner side of the sliding closing boxes, and a compression tester is installed between the two sliding closing boxes.

[0028] According to the above technical solution, the fixed limiting sleeve is slidably installed on the side end of the load-bearing positioning frame, the collecting I-shaped frame is slidably sleeved on the inner side of the load-bearing positioning frame, and the extrusion rotating frame is rotatably installed on the inner side of the load-bearing positioning frame.

[0029] According to the above technical solution, one end of the injection cooling pipe and one end of the liquid inlet treatment pipe rack are both connected to one end of the extraction pump through an adapter. The injection cooling pipe, the liquid inlet treatment pipe rack, and the circulating heat exchange pipe rack are all installed through the top of the load-bearing positioning frame.

[0030] The input terminals of the collecting motor, extraction pump, circulation pump, and pressure tester are all electrically connected to the output terminal of an external controller.

[0031] According to the above technical solution, a tear-resistant, high-temperature fireproof cable is provided, and the cable is manufactured according to a tear-resistant, high-temperature fireproof cable preparation device.

[0032] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0033] 1. Equipped with a dual-layer processing component, the extrusion heating cylinder, preheating treatment cylinder, multi-segment extrusion pipe, feeding preheating barrel, and hot mixing treatment barrel work together to separate and process the extrusion masterbatch and colorant, enabling the simultaneous production of multiple cables. This facilitates direct assembly later, reduces waiting time, and accelerates the hot melting speed of raw materials through multi-segment preheating treatment, achieving fast and stable material supply. The shielding tape and heat-insulating tape are evenly inserted into the side end of the bare wire through the bonding electric push rod, bonding extrusion plate, multi-port branch pipe, synchronous transmission box, and winding rotation frame. Combined with extrusion positioning, a compacting treatment is achieved, and simultaneous hot extrusion molding ensures that the extruded insulation layer is fully extruded with the surface of the bare wire, guaranteeing the overall compactness of the cable.

[0034] The pressing roller frame, driven by the positioning electric push rod and the synchronous electric push rod, presses and bonds the cable, shielding tape, and heat insulation tape together. It also uses the pressing electric push rod and the arc-shaped pressing plate for a tight pressing process. Utilizing the cable before it is fully cooled, the surface adhesion and pressing bonding allow the protective layer to be stably embedded. Simultaneously, the inner groove forming sleeve and multi-position feeding tube support allow for simultaneous feeding from multiple points, achieving mutual pressing of the feed materials. Combined with the cable movement, this causes the extruded plastic to stack, achieving a tight pressing effect. The pressing roller frame, arc-shaped pressing plate, and inner groove forming sleeve support and position the cable, ensuring its straightness and preventing bending, further guaranteeing the bonding effect.

[0035] Through preliminary extrusion processing, the inner protective layer is tightly bonded to the bare wire. Simultaneous production using first-stage and second-stage extrusion, along with multiple sets of limiting components, supports, flattens, and embeds the protective layer into the cable, achieving smooth and uniform cable movement. Furthermore, the interlocking of the insulation materials, combined with the partially cooled internal insulation layer, ensures full adhesion. This solves the problem in existing technologies where separate production of cables leads to insufficient bonding between the internal and external materials, resulting in severe delamination. Consequently, the insulation, shielding, flame retardancy, and fire resistance of the cable are effectively improved.

[0036] 2. Equipped with a cooling collection component, cooling water is drawn from a circulating pump, circulating heat exchange tube rack, and cooling treatment tank. The cooling water is directly sprayed and used for contact heat exchange on the surface of the first section of the cable. Cooling water is drawn from an extraction pump, liquid inlet treatment tube rack, and cooling treatment tank to spray and heat exchange the second section of the cable. In conjunction with an inner hole heat exchange box, arc-shaped pressing plate, and extrusion rotating frame, the cable is supported, positioned, and used for contact heat exchange. This allows the two outer insulation layers of the cable to be separated and formed. Cold contact heat exchange and cold rinsing are used to accelerate the forming and curing speed, reducing the possibility of deformation of the outer insulation layer of the cable due to excessive curing time. Furthermore, the cable is supported and limited during the cooling process to achieve shaping and fixation, further ensuring product quality.

[0037] The system utilizes an injection cooling pipe, a reflux treatment pipe, and a reflux collection pipe to achieve thermal recycling. A pressure-pressing electric push rod and an arc-shaped pressing plate maintain a certain temperature. Through thermal recycling combined with extrusion production, the material is thermally bonded, ensuring the tightness of the material bonding. A collection motor drives a collection frame to collect the material, and then a spring and an extrusion rotating frame push the cable to swing and limit its movement. Through tight extrusion, the cable is rolled up tightly and further extruded and positioned to ensure the overall tightness of the cable.

[0038] In summary, by combining the double-layer processing components and the cooling collection components, and by coordinating two sets of extrusion production with cooling and shaping, heat exchange and insulation, and extrusion bonding, a tight fit is achieved between the inside and outside of the cable, ensuring the overall compactness of the cable and improving its quality. The cooperation of multiple components ensures the efficiency of cable production and enhances the quality of the cable. Attached Figure Description

[0039] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0040] In the attached diagram:

[0041] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0042] Figure 2 This is a schematic diagram of the structure of the double-layer processing component of the present invention;

[0043] Figure 3 This is a schematic diagram of the installation structure of the synchronous electric actuator of the present invention;

[0044] Figure 4 This is a schematic diagram of the installation structure of the irregularly shaped partition frame of the present invention;

[0045] Figure 5 This is a schematic diagram of the installation structure of the internally threaded tube of the present invention;

[0046] Figure 6 This is a schematic diagram of the installation structure of the C-shaped inner hole frame of the present invention;

[0047] Figure 7 This is a schematic diagram of the installation structure of the extrusion heating cylinder of the present invention;

[0048] Figure 8 This is a schematic diagram of the cooling collection assembly of the present invention;

[0049] Figure 9 This is a schematic diagram of the installation structure of the clamping screw of the present invention;

[0050] Labels in the diagram: 1. Load-bearing positioning frame;

[0051] 2. Double-layer processing components; 201. Extrusion heating cylinder; 202. Feeding hydraulic cylinder; 203. Limiting and fixing sleeve; 204. Processing motor; 205. Screw extrusion frame; 206. Preheating treatment cylinder; 207. Adjusting motor; 208. Mixing rack; 209. C-shaped inner hole frame; 210. Hot mixing tank; 211. Lifting hydraulic cylinder; 212. Positioning and mounting sleeve; 213. Dual-axis motor; 214. Hot mixing unloading rack; 215. Unloading preheating tank; 216. Mixing single board; 217. Steady feeding pipe; 218. Multi-section extrusion pipe; 219. Irregularly shaped transmission box; 220. Linkage clamping pipe; 221. Adhesive electric push rod; 222 223. Adhesive extrusion plate; 224. Multi-port branch pipe; 225. Synchronous transmission box; 226. Winding rotation frame; 227. Return spring; 228. L-shaped swing rod; 229. Internally threaded pipe; 230. Raised round plate; 231. Push spring; 232. Inner groove round plate; 233. Inner groove forming sleeve; 234. Multi-position feed tube rack; 235. Adhesive electric push rod; 236. Pressing spring; 237. Synchronous electric push rod; 238. Pressing rolling frame; 239. Adhesive inner hole box; 240. Pressing electric push rod; 241. Arc-shaped pressing plate; 242. Irregularly shaped dividing frame; 243. Extrusion spring; 244. Rolling extrusion frame; 245. Drive motor;

[0052] 3. Cooling and collecting assembly; 301. Collecting motor; 302. C-shaped locking block; 303. Clamping screw; 304. Fixing limit sleeve; 305. Collecting I-beam frame; 306. Matching spring; 307. Extrusion rotating frame; 308. Extrusion column; 309. Cooling treatment box; 310. Inner hole heat exchange box; 311. Injection cooling pipe; 312. Liquid inlet treatment pipe rack; 313. Return treatment pipe; 314. Return collection pipe; 315. Extraction pump; 316. Separation cooling box; 317. Circulation heat exchange pipe rack; 318. Circulation pump; 319. Sliding closing box; 320. Guide I-beam wheel; 321. Compression tester; 322. Cooling treatment box. Detailed Implementation

[0053] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0054] Example: Figure 1-9 As shown, the present invention provides a technical solution, a tear-resistant, high-temperature fireproof cable preparation equipment, including a load-bearing positioning frame 1, and a double-layer processing component 2 is provided at the top of the load-bearing positioning frame 1.

[0055] The double-layer processing assembly 2 includes an extrusion heating cylinder 201, a feeding hydraulic cylinder 202, a limiting fixing sleeve 203, a processing motor 204, an auger extrusion frame 205, a preheating treatment cylinder 206, a positioning motor 207, a mixing frame 208, a C-shaped inner hole frame 209, a hot mixing treatment tank 210, a lifting hydraulic cylinder 211, a positioning mounting sleeve 212, a dual-shaft motor 213, a hot mixing unloading frame 214, an unloading preheating tank 215, a mixing veneer 216, a steady feeding pipe 217, a multi-section extrusion pipe 218, a shaped transmission box 219, a linkage clamping pipe 220, a bonding electric push rod 221, and a bonding... The components include: extrusion plate 222, multi-port branch pipe 223, synchronous transmission box 224, winding rotation frame 225, return spring 226, L-shaped swing rod 227, internal threaded pipe 228, raised round plate 229, push spring 230, inner groove round plate 231, inner groove forming sleeve 232, multi-position feeding pipe rack 233, contact electric push rod 234, pressing spring 235, synchronous electric push rod 236, pressing rolling frame 237, contact inner hole box 238, pressing electric push rod 239, arc-shaped pressing plate 240, irregularly shaped dividing frame 241, extrusion spring 242, rolling extrusion frame 243, and drive motor 244.

[0056] An extrusion heating cylinder 201 is equidistantly installed on one side of the top of the load-bearing positioning frame 1. Feeding hydraulic cylinders 202 are symmetrically snapped onto the outer side of the extrusion heating cylinder 201. One end of each feeding hydraulic cylinder 202 is fixedly connected to a limiting sleeve 203. A processing motor 204 is installed inside the limiting sleeve 203 via a motor mount. An auger extrusion frame 205 is snapped onto the output shaft of the processing motor 204. The auger extrusion frame 205 is slidably installed inside the extrusion heating cylinder 201, allowing for stable operation during feeding and ensuring the speed and stability of the feeding process. A preheating treatment cylinder 206 is sleeved through the top of the extrusion heating cylinder 201. An adjusting motor 207 is installed at the top of the preheating treatment cylinder 206 via a motor mount. A mixing rack 208 is snapped onto the bottom of the output shaft of the adjusting motor 207 corresponding to the inner side of the preheating treatment cylinder 206. The side end of the mixing rack 208 rotates and fits into the inner end of the preheating treatment cylinder 206, achieving stable rotational mixing and preventing material leakage due to insufficient fit.

[0057] A U-shaped inner hole frame 209 is installed at the top of the load-bearing positioning frame 1 near one of the extrusion heating cylinders 201. Several hot mixing tanks 210 are equidistantly clamped at one end of the load-bearing positioning frame 1 relative to the U-shaped inner hole frame 209. Lifting hydraulic cylinders 211 are symmetrically installed on the sides of the hot mixing tanks 210. Positioning mounting sleeves 212 are fixed to the tops of the two lifting hydraulic cylinders 211. A dual-axis motor 213 is mounted inside the positioning mounting sleeve 212 via a motor base. A hot mixing discharge rack 214 is clamped to the bottom of the output shaft of the dual-axis motor 213 corresponding to the inside of the hot mixing tank 210. The hot mixing discharge rack 214 is slidably installed inside the hot mixing tank 210, ensuring stable hot mixing discharge. A preheating discharge tank 21 is fixedly connected to the top of the hot mixing tank 210. 5. A mixing plate 216 is snapped onto the top of the output shaft of the dual-shaft motor 213. The mixing plate 216 is rotatably mounted inside the feeding preheating tank 215 to achieve stable operation and ensure the stability of the linkage. A steady feed pipe 217 is connected between the hot mixing tank 210 and the feeding preheating tank 215. Multiple extrusion pipes 218 are connected between one end of multiple hot mixing tanks 210 and one end of one extrusion heating cylinder 201. The multiple extrusion pipes 218 are installed through the side of the hot mixing tank 210, enabling a single extruder to heat and supply materials to multiple devices. A special-shaped transmission box 219 is snapped onto the side of the load-bearing positioning frame 1. A linkage engaging pipe 220 is snapped onto the output shaft of the special-shaped transmission box 219. The linkage engaging pipe 220 is rotatably sleeved with the multi-port branch pipe 223. The bonding extrusion plate 222 is slidably installed inside the multi-port branch pipe 223 to ensure stable operation when the bare wire is shielded and protected by the external shielding layer, achieving tight bonding processing. A bonding electric push rod 221 is symmetrically installed on the side end of the linkage locking pipe 220, with one end of the bonding electric push rod 221 clamped to the bonding extrusion plate 222. Several multi-port branch pipes 223 are equidistantly connected to one end of the C-shaped inner frame 209 corresponding to the position of the linkage locking pipe 220. A synchronous transmission box 224 is clamped to the top of the load-bearing positioning frame 1. A winding rotation frame 225 is sleeved on the output shaft of the synchronous transmission box 224. The winding rotation frame 225 is rotatably installed inside the multi-port branch pipe 223 to achieve stable winding connection, ensuring the tightness of the cable surface shielding layer bonding. Drive motors 244 are mounted on motor mounts at the input shaft positions of the irregularly shaped transmission box 219 and the synchronous transmission box 224, respectively. The output shafts of the two drive motors 244 engage with the input shafts of the irregularly shaped transmission box 219 and the synchronous transmission box 224, allowing for stable operation and coordination during multiple transmissions. Several return springs 226 are symmetrically and evenly installed on the side end of the load-bearing positioning frame 1. One end of each return spring 226 is fixedly connected to an L-shaped swing rod 227, which rotatably engages with the side end of the load-bearing positioning frame 1, ensuring stable support for its elastic rotation and guaranteeing the limiting effect. Internally threaded tubes 228 are welded equidistantly to one end of the load-bearing positioning frame 1, and an inner grooved circular plate 231 is slidably installed on the side end of the internally threaded tube 228, allowing for stable limiting operation during material pushing and engaging.One end of the internally threaded tube 228 is threadedly connected to a raised circular plate 229. At one end of the load-bearing positioning frame 1, several push springs 230 are equidistantly installed at positions corresponding to the internally threaded tube 228. One end of each push spring 230 is welded to an inner grooved circular plate 231.

[0058] An inner groove forming sleeve 232 is fixedly connected to one side of the top of the load-bearing positioning frame 1, corresponding to the position of another extrusion heating cylinder 201. Multiple feed tube supports 233 are connected through the top and bottom of the inner groove forming sleeve 232. Several positioning electric actuators 234 are equidistantly engaged at the top of the load-bearing positioning frame 1 and at the corresponding positions of the inner groove forming sleeve 232. Several compression springs 235 are equidistantly installed at the top and bottom of the load-bearing positioning frame 1 at the positions corresponding to the positioning electric actuators 234. Several synchronous electric actuators 236 are equidistantly installed at the inner side of the load-bearing positioning frame 1 away from the positions of the compression springs 235. The compression springs 235 and the synchronous electric actuators... One end of the rod 236 is fixed with a pressing rolling frame 237. The top of the load-bearing positioning frame 1 is equipped with a fitting inner hole box 238. The top and bottom of the fitting inner hole box 238 are both equipped with pressing electric push rods 239. One end of the pressing electric push rod 239 is equipped with an arc-shaped pressing plate 240. The arc-shaped pressing plate 240 is slidably installed on the inner side of the fitting inner hole box 238 to ensure stable operation of the fitting support. The top and bottom of the load-bearing positioning frame 1 are both sleeved with irregularly shaped dividing frames 241. Several compression springs 242 are fixedly connected at equal intervals on the inner side of the load-bearing positioning frame 1. One end of the several compression springs 242 is equipped with a rolling pressing frame 243.

[0059] To ensure stable operation of the equipment, the input terminals of the extrusion heating cylinder 201, feeding hydraulic cylinder 202, processing motor 204, preheating cylinder 206, adjusting motor 207, hot mixing tank 210, lifting hydraulic cylinder 211, dual-shaft motor 213, unloading preheating tank 215, bonding electric push rod 221, positioning electric push rod 234, synchronous electric push rod 236, pressing electric push rod 239, and drive motor 244 are all electrically connected to the output terminal of an external controller.

[0060] The input terminal of the external controller is electrically connected to the output terminal of the external power supply.

[0061] The top of the load-bearing positioning frame 1 is equipped with a cooling collection component 3;

[0062] The cooling collection assembly 3 includes a collection motor 301, a U-shaped locking block 302, a clamping screw 303, a fixing limit sleeve 304, a collection I-shaped frame 305, a cooperating spring 306, an extrusion rotating frame 307, an extrusion column 308, a cooling treatment box 309, an inner hole heat exchange box 310, an injection cooling pipe 311, an inlet liquid treatment pipe rack 312, a return treatment pipe 313, a return collection pipe 314, an extraction pump 315, a separation cooling box 316, a circulating heat exchange pipe rack 317, a circulating pump 318, a sliding closing box 319, a guide I-shaped wheel 320, a pressure tester 321, and a cooling treatment box 322.

[0063] A collecting motor 301 is mounted on one side of the top of the load-bearing positioning frame 1 via a motor base. The output shaft of the collecting motor 301 is engaged with a U-shaped locking block 302. A clamping screw 303 is mounted on one end of the load-bearing positioning frame 1. A fixed limiting sleeve 304 is connected to the side end of the clamping screw 303 via a screw seat. The fixed limiting sleeve 304 is slidably mounted on the side end of the load-bearing positioning frame 1. A collecting I-shaped frame 305 is slidably fitted inside the load-bearing positioning frame 1 to achieve steady sliding operation and ensure the stability of synchronous linkage of the equipment. The collecting I-shaped frame 305 is fitted on the side end of the fixed limiting sleeve 304 and the U-shaped locking block 302. A cooperating spring 306 is mounted on one end of the load-bearing positioning frame 1. A pressing rotating frame 307 is mounted on the other end of the cooperating spring 306. The pressing rotating frame 307 is rotatably mounted inside the load-bearing positioning frame 1 to ensure the stability of support limit and orientation limit. A pressing column 308 is rotatably fitted on the side end of the pressing rotating frame 307.

[0064] Two cooling boxes 309 are equidistantly installed at the bottom of the load-bearing positioning frame 1. An inner bore heat exchange box 310 is fixedly connected to one side of the top of the load-bearing positioning frame 1. A cooling box 322 is fixedly connected to one end of the inner bore heat exchange box 310. An injection cooling pipe 311 is connected through the bottom of the inner bore heat exchange box 310. Liquid inlet treatment pipe supports 312 are connected through the top and bottom of the cooling box 322. A return treatment pipe 313 is connected through the top of the inner bore heat exchange box 310. A return collection pipe 314 is connected through the top of the inner bore box 238 and one end of the cooling box 322. The top of the load-bearing positioning frame 1 is positioned corresponding to the injection cooling pipe 311 and the liquid inlet treatment pipe support 312. A pump 315 is installed on the motor base. A separation cooling box 316 is fixedly connected to the top of the load-bearing positioning frame 1 near the pressing rolling frame 237. A circulating heat exchange tube frame 317 is fixedly connected to one end of the separation cooling box 316 and the pressing rolling frame 237. One end of the injection cooling pipe 311 and one end of the liquid inlet treatment tube frame 312 are connected to one end of the pump 315 through an adapter. The injection cooling pipe 311, the liquid inlet treatment tube frame 312 and the circulating heat exchange tube frame 317 are all installed through the top of the load-bearing positioning frame 1 to ensure stable operation of water supply cooling. A circulating pump 318 is installed on the top of the load-bearing positioning frame 1 at the position corresponding to the circulating heat exchange tube frame 317 through the motor base.

[0065] A sliding closing box 319 is symmetrically installed at the top center of the load-bearing positioning frame 1. Guide I-shaped wheels 320 are equidistantly slidably connected inside the sliding closing box 319. A compression tester 321 is installed between the two sliding closing boxes 319.

[0066] To ensure stable operation of the equipment, the input terminals of the collecting motor 301, the extraction pump 315, the circulating pump 318, and the pressure tester 321 are all electrically connected to the output terminal of an external controller.

[0067] According to the above technical solution, a tear-resistant, high-temperature fireproof cable is manufactured using a tear-resistant, high-temperature fireproof cable preparation device.

[0068] The working principle and usage process of this invention are as follows: During cable production, bare wire produced using stranded windings is pulled to the positions of the multi-branch pipe 223 and the C-shaped inner hole frame 209. The shielding tape roll is placed at the position of the internally threaded pipe 228. The raised circular plate 229 and the internally threaded pipe 228 are connected by threads. Then, the push spring 230 drives the inner groove circular plate 231 to slide along the internally threaded pipe 228. The raised circular plate 229 and the inner groove circular plate 231 limit and clamp the shielding tape roll, thereby realizing the feeding of the shielding tape and pulling the shielding tape. The wire is passed through two L-shaped swing rods 227 and finally inserted into the winding rotating frame 225 at the position of the multi-port branch pipe 223. The bare wire is moved by the guiding device. At this time, the drive motor 244, the irregular transmission box 219 and the synchronous transmission box 224 drive the linkage locking pipe 220 and the winding rotating frame 225 to rotate. The winding rotating frame 225 drives the shielding tape to wind and rotate along the multi-port branch pipe 223, and fixes the shielding tape to the side end of the bare wire. During the pulling process, the bare wire is further squeezed and adhered.

[0069] After the winding is completed, the linkage locking tube 220 drives the bonding electric push rod 221 and the bonding extrusion plate 222 to swing back and forth along the multi-port branch tube 223. The bonding electric push rod 221 drives the bonding extrusion plate 222 to bond to the side end of the bare wire, and the shielding tape on the surface of the bare wire is squeezed to make the shielding tape bond to the bare wire more tightly. At the same time, the return spring 226 drives the L-shaped swing rod 227 to rotate along the load-bearing positioning frame 1. The L-shaped swing rod 227 drives the shielding tape to elastically pull, limiting the tightness of the shielding tape. Through rotation winding, elastic extension and contraction pulling to limit the position of the shielding tape and swing extrusion bonding, the shielding tape in contact with the bare wire is fully fitted and bonded, ensuring the uniformity of the shielding on the cable surface and the quality of the shielding.

[0070] After the shielding layer is wound, the cable is guided to the position of the U-shaped inner frame 209. The adjusting motor 207 drives the mixing frame 208 to rotate along the inner side of the preheating cylinder 206, pushing the extrusion masterbatch inside to tumble and shift its position, thus preheating the masterbatch and making the mixing of various masterbatches more uniform, allowing for faster subsequent heating and mixing. The masterbatch enters the inner side of the extrusion heating cylinder 201 along the preheating cylinder 206. The processing motor 204 drives the auger extruder 205 to move the masterbatch along the extrusion heating cylinder 201 and heat it. Then, the feeding hydraulic cylinder 20... 2. The limiting and fixing sleeve 203, the processing motor 204 and the auger extrusion rack 205 move along the extrusion heating cylinder 201, pushing the extruded plastic into the inside of the multi-segment extrusion tube 218, and injecting it into the inside of the hot mixing treatment tank 210 along the multi-segment extrusion tube 218. The dual-shaft motor 213 drives the hot mixing feeding rack 214 and the mixing plate 216 to rotate simultaneously. The hot mixing feeding rack 214 rotates in the hot mixing treatment tank 210, and the mixing plate 216 rotates in the feeding preheating tank 215. The mixing plate 216 pushes the color material in the feeding preheating tank 215 to rotate continuously along the feeding preheating tank 215 and exchange positions to achieve the preheating treatment of the color material.

[0071] The pigment enters the preheating tank 215 through the steady feed pipe 217 and enters the inner side of the hot mixing tank 210. Inside the hot mixing tank 210, the preheated pigment is stirred and mixed with the extruded plastic, and the mixture is continuously heated to ensure that the pigment is evenly dissolved and mixed into the extruded plastic, thus fully dyeing the plastic. The lifting hydraulic cylinder 211 drives the positioning mounting sleeve 212, the dual-shaft motor 213, the hot mixing unloading rack 214, and the mixing plate 216 to rise and fall. The hot mixing unloading rack 214 pushes the extruded plastic, causing it to flow along the hot mixing tank 210. The cable enters the inner side of the C-shaped inner hole frame 209. When the cable passes through the C-shaped inner hole frame 209, the extruded plastic is evenly spread on the surface of the cable, thereby realizing the initial extrusion bonding and forming of the cable. Through separate feeding, multi-step mixing and heating and overall homogenization preheating, the heating speed of the masterbatch is accelerated, and the material is fed and mixed simultaneously, so that the extrusion masterbatch and colorant are fully mixed, making the overall color more uniform. At the same time, multiple cables of different colors can be produced and processed simultaneously, accelerating the production speed and ensuring the synchronization and efficiency of production.

[0072] After the cable surface is extruded, the cable is pulled to the position of the pressing rolling frame 237, the shielding tape is fixed to the inside of the irregularly shaped dividing frame 241, and the irregularly shaped dividing frame 241 is fixed to the inside of the load-bearing positioning frame 1. The shielding tape is passed through the rolling extrusion frame 243, and the rolling extrusion frame 243 is driven by the extrusion spring 242 to slide along the load-bearing positioning frame 1, pushing the shielding tape to move along the load-bearing positioning frame 1. The shielding tape is placed on the side of the two rolling extrusion frames 243, and the rolling extrusion frame 243 presses and adheres the shielding tape to the surface of the cable that has not been completely cooled, so that the shielding tape is completely adhered and inserted into the inside of the insulation layer.

[0073] After bonding, two sets of pressing electric push rods 239 drive the arc-shaped pressing plate 240 to move in opposite directions to support and position the cable. The bonding electric push rod 234 is adjusted to move the pressing roller frame 237 along the load-bearing positioning frame 1, and the pressing spring 235 provides overall uniform support and positioning. Multiple sets of pressing roller frames 237 support and position the cable height, working in conjunction with the inner groove forming sleeve 232 for height limitation and support. Simultaneously, extruded plastic is injected into the inner groove forming sleeve 232 through the multi-position feeding tube rack 233 and the extrusion heating cylinder 201. Multi-position synchronous feeding accelerates the overall extrusion effect. By feeding materials from both the front and rear extrusion stages, the extruded plastics are squeezed and stacked together, achieving full extrusion and ensuring the overall compactness of the extruded plastics. Through the combined action of shielding layer extrusion bonding, front and rear support and limiting, and multi-position synchronous extrusion and stacking extrusion, full and uniform extrusion is achieved, ensuring the overall extrusion quality and preventing omissions and voids caused by uneven extrusion, thus guaranteeing product quality. Through a two-step process, the second extrusion bonding is carried out while the surface of the first extrusion is still sticky due to the incomplete cooling of the first extrusion, achieving full bonding of the extruded plastics and preventing extrusion delamination, thus ensuring product quality.

[0074] After the first extrusion molding is completed, cooling water is drawn from the cooling treatment box 309 by the circulating pump 318 and the circulating heat exchange tube rack 317. The extruded plastic on the surface of the cable is cooled by direct spraying and contact heat exchange of the cooling water, so that it can be quickly formed and cured, avoiding deformation of the cable shape due to long molding time and ensuring product quality. The cable is guided by the guide wheel 320 in the sliding closed box 319, and insulation test is performed by the compression tester 321 during the movement. This allows the cable to be quickly discharged while the insulation layer on the surface of the cable is being understood. The test operation can be completed simultaneously during the cable discharge guidance, which accelerates the production speed.

[0075] After the second extrusion is completed, the cable is moved to the cooling treatment box 322. Cooling water in the cooling treatment tank 309 is drawn out by the extraction pump 315 and the liquid inlet treatment pipe rack 312. The cooling water is sprayed onto the surface of the cable along the liquid inlet treatment pipe rack 312 to cool the cable. At the same time, cooling water in the cooling treatment tank 309 is drawn out by the extraction pump 315 and the injection cooling pipe 311 and injected into the inner hole heat exchange box 310. Through contact heat exchange and limiting support, the cable is shaped and cooled to ensure the quality of the cable. The water generated by the heat exchange flows to the inner groove forming sleeve 232 along the return treatment pipe 313. Through heat circulation, the arc-shaped pressing plate 240 at the inner groove forming sleeve 232 is kept at a certain temperature to achieve steady pressing.

[0076] After circulation, the water flows back and is collected through the return collection pipe 314. The completed cable passes through the extrusion rotating frame 307 and the extrusion column 308. With the help of the spring 306 and the extrusion rotating frame 307, the cable swings and supports, and the collection frame 305 is inserted into the side of the load-bearing positioning frame 1. The clamping screw 303 drives the fixed limit sleeve 304 to fit into the side of the collection frame 305 along the load-bearing positioning frame 1, so that the U-shaped locking block 302 is fully engaged with the collection frame 305. The collection motor 301 drives the U-shaped locking block 302 and the collection frame 305 to rotate, realizing the collection of the cable. Through heat exchange treatment and positioning support treatment, the cable quality and cable cooling speed are guaranteed. With the help of extrusion positioning and winding locking, the winding is tight, ensuring the speed and stability of the output.

[0077] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A tear-resistant, high-temperature fire-resistant cable manufacturing equipment, comprising a load-bearing positioning frame, characterized in that: The top of the load-bearing positioning frame is equipped with a double-layer processing component; The double-layer processing assembly includes an extruded heating cylinder; The load-bearing positioning frame is equipped with extruded heating cylinders at equal intervals on one side of its top end, and a C-shaped inner hole frame is installed on the top end of the load-bearing positioning frame near one of the extruded heating cylinders. One end of the load-bearing positioning frame is equidistantly engaged with several hot mixing treatment barrels at the position of the C-shaped inner hole frame. The hot mixing treatment barrels are symmetrically equipped with lifting hydraulic cylinders on their side ends. The top ends of the two lifting hydraulic cylinders are fixed with positioning mounting sleeves. A dual-axis motor is mounted on the inside of the positioning mounting sleeves through a motor base. The bottom end of the output shaft of the dual-axis motor is engaged with a hot mixing unloading rack corresponding to the inside of the hot mixing treatment barrel. The top of the hot mixing tank is fixedly connected to the feeding preheating tank, the top of the output shaft of the dual-shaft motor is clamped with a mixing plate, a steady feeding pipe is connected through the hot mixing tank and the feeding preheating tank, and multiple extrusion pipes are connected between one end of the multiple hot mixing tanks and one end of one of the extrusion heating cylinders. An inner groove forming sleeve is fixedly connected to one side of the top of the load-bearing positioning frame, corresponding to the position of another extrusion heating cylinder. Multiple feed tubes are connected through the top and bottom of the inner groove forming sleeve. Several positioning electric push rods are equidistantly engaged at the top of the load-bearing positioning frame and the corresponding position of the inner groove forming sleeve. Several compression springs are equidistantly installed at the top and bottom of the inner side of the load-bearing positioning frame, corresponding to the positions of the positioning electric push rods. Several synchronous electric push rods are equidistantly installed at the inner side of the load-bearing positioning frame away from the positions of the compression springs. A compression rolling frame is fixed to one end of the compression spring and the synchronous electric push rod. The top of the load-bearing positioning frame is equipped with a fitting inner hole box, and the top and bottom of the inner side of the fitting inner hole box are equipped with pressing electric push rods, and one end of the pressing electric push rod is equipped with an arc-shaped pressing plate. The top and bottom ends of the load-bearing positioning frame are both fitted with irregularly shaped dividing frames, and several compression springs are fixedly connected at equal intervals on the side ends of the load-bearing positioning frame. A rolling compression frame is installed on one end of each of the compression springs. The side end of the load-bearing positioning frame is connected to a non-shaped transmission box, the output shaft of the non-shaped transmission box is connected to a linkage engagement tube, the side end of the linkage engagement tube is symmetrically equipped with a fitting electric push rod, one end of the fitting electric push rod is connected to a fitting extrusion plate, and one end of the C-shaped inner hole frame is equidistantly connected with several multi-port branch pipes at the position corresponding to the linkage engagement tube. The top of the load-bearing positioning frame is snapped with a synchronous transmission box, and the output shaft of the synchronous transmission box is sleeved with a winding rotating frame. The top of the load-bearing positioning frame is equipped with a transmission motor via a motor mount corresponding to the input shaft positions of the irregular transmission box and the synchronous transmission box. Several return springs are symmetrically and equidistantly installed on the side of the load-bearing positioning frame, and one end of each return spring is fixedly connected to an L-shaped swing rod.

2. The tear-resistant, high-temperature fire-resistant cable manufacturing equipment according to claim 1, characterized in that, The extrusion heating cylinder is symmetrically fitted with feeding hydraulic cylinders on its inner side. One end of each feeding hydraulic cylinder is fixedly connected to a limiting sleeve. A processing motor is mounted on the inner side of the limiting sleeve via a motor base. The output shaft of the processing motor is fitted with an auger extrusion frame. A preheating treatment cylinder is sleeved through the top of the extrusion heating cylinder. An adjustment motor is mounted on the top of the preheating treatment cylinder via a motor base. A mixing rack is fitted to the bottom of the output shaft of the adjustment motor corresponding to the inner side of the preheating treatment cylinder. One end of the load-bearing positioning frame is welded with an internally threaded tube at equal intervals. One end of the internally threaded tube is connected to a raised circular plate by a thread. A number of push springs are installed at equal intervals at the position corresponding to the internally threaded tube on one end of the load-bearing positioning frame. One end of each push spring is welded with an inner grooved circular plate.

3. The tear-resistant, high-temperature fire-resistant cable manufacturing equipment according to claim 2, characterized in that, The auger extrusion rack is slidably installed inside the extrusion heating cylinder, the side end of the mixing rack is rotatably attached to the inner end of the preheating treatment cylinder, the hot mixing discharge rack is slidably installed inside the hot mixing treatment tank, and the mixing plate is rotatably installed inside the discharge preheating tank.

4. The tear-resistant, high-temperature fire-resistant cable manufacturing equipment according to claim 1, characterized in that, The multi-segment extrusion pipe is installed through the side of the hot mixing tank, the linkage locking pipe is rotatably sleeved with the multi-port branch pipe, and the fitting extrusion plate is slidably installed inside the multi-port branch pipe.

5. The tear-resistant, high-temperature fire-resistant cable manufacturing equipment according to claim 2, characterized in that, The winding rotating frame is rotatably installed inside the multi-port branch pipe. The output shafts of the two drive motors are respectively engaged with the input shafts of the irregular linkage frame and the synchronous transmission box. One end of the L-shaped swing rod is rotatably engaged with the side end of the load-bearing positioning frame.

6. The tear-resistant, high-temperature fire-resistant cable manufacturing equipment according to claim 2, characterized in that, The inner groove circular plate is slidably installed on the side end of the internal threaded pipe, and the arc-shaped pressing plate is slidably installed on the inner side of the fitting inner hole box; The input ends of the extrusion heating cylinder, feeding hydraulic cylinder, processing motor, preheating cylinder, adjusting motor, hot mixing tank, lifting hydraulic cylinder, dual-axis motor, unloading preheating tank, bonding electric push rod, positioning electric push rod, synchronous electric push rod, pressing electric push rod, and drive motor are all electrically connected to the output end of the external controller. The input terminal of the external controller is electrically connected to the output terminal of the external power supply.

7. The tear-resistant, high-temperature fire-resistant cable manufacturing equipment according to claim 6, characterized in that, A cooling collection assembly is provided at the top of the load-bearing positioning frame; The cooling collection assembly includes a collection motor; A collecting motor is mounted on one side of the top of the load-bearing positioning frame via a motor base. The output shaft of the collecting motor is engaged with a U-shaped locking block. A clamping screw is mounted on one end of the load-bearing positioning frame. A fixing limiting sleeve is connected to the side end of the clamping screw via a screw seat. A collecting I-shaped frame is sleeved on the side end of the fixing limiting sleeve and the U-shaped locking block. A cooperating spring is mounted on one end of the load-bearing positioning frame. A pressing rotating frame is mounted on one end of the cooperating spring. A pressing column is rotatably sleeved on the side end of the pressing rotating frame. Two cooling boxes are equidistantly installed at the bottom of the load-bearing positioning frame. An inner hole heat exchange box is fixedly connected to one side of the top of the load-bearing positioning frame. A cooling box is fixedly connected to one end of the inner hole heat exchange box. An injection cooling pipe is connected through the bottom of the inner hole heat exchange box. Liquid inlet treatment pipe racks are connected through the top and bottom of the cooling box. A return treatment pipe is connected through the top of the inner hole heat exchange box. A return collection pipe is connected through the top of the inner hole box and one end of the cooling box. A pump is installed on the top of the load-bearing positioning frame via a motor base at the position corresponding to the injection cooling pipe and the liquid inlet treatment pipe rack. A separation cooling box is fixedly connected to the top of the load-bearing positioning frame near the position of the pressing rolling frame. A circulating heat exchange pipe rack is fixedly connected to one end of the separation cooling box and the pressing rolling frame. A circulating pump is installed on the top of the load-bearing positioning frame via a motor base at the position corresponding to the position of the circulating heat exchange pipe rack. The load-bearing positioning frame has symmetrically installed sliding closing boxes at the top center. Guide I-shaped wheels are equidistantly connected to the inner side of the sliding closing boxes, and a compression tester is installed between the two sliding closing boxes.

8. The tear-resistant, high-temperature fire-resistant cable manufacturing equipment according to claim 7, characterized in that, The fixed limiting sleeve is slidably installed on the side end of the load-bearing positioning frame, the collecting I-shaped frame is slidably sleeved on the inner side of the load-bearing positioning frame, and the extrusion rotating frame is rotatably installed on the inner side of the load-bearing positioning frame.

9. The tear-resistant, high-temperature fire-resistant cable manufacturing equipment according to claim 7, characterized in that, One end of the injection cooling pipe and one end of the liquid inlet treatment pipe rack are connected to one end of the extraction pump via adapters. The injection cooling pipe, the liquid inlet treatment pipe rack, and the circulating heat exchange pipe rack are all installed through the top of the load-bearing positioning frame. The input terminals of the collecting motor, extraction pump, circulation pump, and pressure tester are all electrically connected to the output terminal of an external controller.

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