An extrusion die adaptive system for online correction of cable outer wall ovality

Abstract

The application discloses an extrusion die self-adapting system for online correction of cable outer wall ovality, relates to the technical field of cable extrusion, and comprises an extruder head, one end of the extruder head is provided with a fixing ring, a detachable self-adapting adjusting mechanism is arranged outside the fixing ring, the detachable self-adapting adjusting mechanism comprises a flange ring, the flange ring is sleeved outside the fixing ring, a plug-in groove is formed in one end of the fixing ring, and a positioning sleeve is sleeved outside the fixing ring, the application has a scientific and reasonable structure, is safe and convenient to use, the detachable self-adapting adjusting mechanism is arranged, the flange ring, the plug-in groove, the anti-rotation plug-in plate, the splicing ring and the positioning pin are matched, the positioning sleeve is conveniently and quickly installed and fixed on the fixing ring, the fixing plate, the positioning guide rod and the sliding clamping seat are matched, the top rod is conveniently adjusted and connected with the outer die sleeve, the outer die sleeve is then limited and fixed on the fixing ring, and the convenience of dismounting is improved.

Description

Technical Field

[0001] This invention relates to the field of cable extrusion technology, specifically to an adaptive extrusion die system for online correction of the ellipticity of the outer wall of cables. Background Technology

[0002] Cable extrusion processing involves heating and plasticizing insulating or sheathing materials such as plastics and rubber, and then uniformly coating them onto the outer periphery of the conveyed material through extrusion, thereby forming a structure with insulating or protective functions. For example, a cable extruder eccentricity adjustment device is disclosed in application number CN202510014901.4. This patent is beneficial for accurately correcting the concentricity deviation problem that occurs during cable production and achieving precise control of cable concentricity. However, in use, only a single adjustment can be made, and the cable cannot be adjusted in conjunction with both the source and the traction route. The adaptive effect is poor, and it is inconvenient to disassemble and assemble, which increases the difficulty of cleaning and maintenance. Therefore, in order to avoid the above-mentioned technical problems, it is indeed necessary to provide an extrusion die adaptive system for online correction of the ellipticity of the cable outer wall to overcome the defects of the prior art. Summary of the Invention

[0003] This invention provides an adaptive extrusion die system for online correction of the ellipticity of the outer wall of cables. It can effectively solve the problems mentioned in the background art, which can only perform single adjustments, cannot coordinate the adjustment of cables from both the source and the traction route, have poor adaptive performance, and are inconvenient to disassemble and assemble, increasing the difficulty of cleaning and maintenance.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an extrusion die adaptive system for online correction of the ellipticity of the outer wall of a cable, comprising an extruder head, one end of which is fitted with a fixing ring, and a detachable adaptive adjustment mechanism is provided on the outside of the fixing ring, the detachable adaptive adjustment mechanism comprising a flange ring; A flange ring is fitted around the outside of the fixing ring, and a insertion groove is provided at one end of the fixing ring. A positioning sleeve is fitted around the outside of the fixing ring, and an anti-rotation insert is engaged with the inner wall of the positioning sleeve. The outer side of the positioning sleeve is fitted with a splicing ring, and a positioning pin is connected between the splicing ring and the flange ring. The positioning sleeve is fitted with an end sleeve on its outer side, and support rods are symmetrically connected at equal intervals on the outer side of the end sleeve, and support springs are fitted on the outer side of the support rods. One end of the support rod is engaged with a sliding sleeve, a guide rod is sleeved inside the sliding sleeve, one end of the guide rod is engaged with an adjusting bracket, one end of the adjusting bracket is engaged with an outer mold support ring, and an outer mold sleeve is sleeved inside the outer mold support ring.

[0005] According to the above technical solution, one end of the anti-rotation insert plate is embedded in the insertion groove, and both ends of the anti-rotation insert plate are slidably fitted with the inner wall of the insertion groove. The outer side of the end sleeve is threaded with pins at equal intervals, and one end of the pin passes through the end sleeve and is threadedly connected to one end of the positioning sleeve.

[0006] According to the above technical solution, a gasket is snapped into the other end of the support rod, the inner diameter of the adjusting bracket is larger than the inner diameter of the outer mold support ring, and one end of the outer mold sleeve is fitted with one end of the extruder head.

[0007] According to the above technical solution, the outer mold sleeve is provided with mounting grooves at equal intervals on the outer side, and the mounting grooves are symmetrically fitted with fixing plates, and positioning guide rods are symmetrically fitted between two opposite fixing plates. Sliding brackets are movably fitted on the outer sides of the two positioning guide rods. An electrically controlled cylinder is equidistantly connected to the outside of the fixed ring by bolts, and an adjusting rod is movably connected to one end of the electrically controlled cylinder.

[0008] According to the above technical solution, the opening position of the mounting groove corresponds to the installation position of the guide rod, and there are four mounting grooves in total. One end of the sliding bracket slides against the inner wall of the mounting groove.

[0009] According to the above technical solution, the electronically controlled cylinder is powered and controlled by an external power source. One end of the adjusting rod is embedded inside the sliding seat, and one end of the sliding seat is threadedly connected to a locking screw, with one end of the locking screw passing through one end of the adjusting rod.

[0010] According to the above technical solution, an extrusion trimming mechanism is provided on the outside of the extruder head, and the extrusion trimming mechanism includes an L-shaped plate; The extruder head is equidistantly fitted with L-shaped plates on its outer side. An annular frame is fitted on the inner wall of the L-shaped plates. A bidirectional insertion cylinder is fitted inside the annular frame. Both ends of the bidirectional insertion cylinder are threaded with connecting rings. One end of the connecting ring is rotatably connected to a trimming cylinder. Limiting bosses are equidistantly fitted on the outer side of the trimming cylinder. One end of the limiting boss is fitted with a limiting pin. A limiting socket is fitted on the outer side of the bidirectional insertion cylinder corresponding to the outer side of the limiting pin. The dressing cylinder is equidistantly fitted with cross guide sleeves on its outer side. A cross slide rod is movably connected inside the cross guide sleeve. One end of the cross slide rod is fitted with a concave wheel frame inside the dressing cylinder. A shaping wheel is rotatably connected inside the concave wheel frame. The trimming cylinder is equidistantly fitted with connecting seats on its outer side, and an electric push rod is fitted inside the connecting seat. One end of the electric push rod is fitted with a linkage pull plate. A laser diameter gauge is installed inside the trimming cylinder at one end of the connecting seat.

[0011] According to the above technical solution, one end of the limiting pin is embedded inside the limiting socket, the outer side of the connecting ring is evenly provided with anti-slip texture, and the axes of the bidirectional insertion cylinder, the trimming cylinder and the extruder head are all located on the same horizontal line.

[0012] According to the above technical solution, the outer side of the shaping wheel is provided with an arc surface, and four shaping wheels are installed on one of the trimming cylinders, with the shaping wheels on the two trimming cylinders being distributed at equal intervals and staggered.

[0013] According to the above technical solution, one end of the linkage pull plate is fixedly connected to the other end of the cross slide bar. The electric push rod and the laser diameter measuring instrument are both powered and controlled by an external power supply and a smart terminal. The signal output end of the laser diameter measuring instrument is connected to the input end of the smart terminal, and the signal output end of the smart terminal is connected to the input end of the electric push rod and the electric control cylinder.

[0014] Compared with the prior art, the beneficial effects of the present invention are: the present invention has a scientific and reasonable structure and is safe and convenient to use. 1. A detachable adaptive adjustment mechanism is set up. Through the cooperation of flange ring, insertion groove, anti-rotation insert plate, splicing ring and positioning pin, the positioning sleeve can be quickly installed and fixed on the fixing ring. Then, through the cooperation of fixing plate, positioning guide rod and sliding seat, the adjustment rod can be connected to the outer mold sleeve, thereby limiting and fixing the outer mold sleeve on the fixing ring, which increases the convenience of disassembly and assembly. Furthermore, by utilizing the cooperation of end sleeves, support rods, support springs, sliding sleeves, guide rods, adjusting brackets, and outer mold support rings, auxiliary support is provided for the outer mold sleeve, further improving the stability of the outer mold sleeve inside the fixed ring and ensuring that it fits tightly against the inner wall of the fixed ring. In addition, the combination of the electric cylinder and the adjusting rod can achieve radial fine adjustment in four directions, and compensate for the ellipticity deviation of the cable outer wall in real time from the extrusion source. At the same time, the sliding seat is movably sleeved on the outside of the positioning guide rod, and the connection stability can still be guaranteed when the outer mold is adjusted. This realizes the linkage of multiple adjusting rods to push and pull, which improves the stability and reliability of the support.

[0015] 2. An extrusion trimming mechanism is set up. The extruded cable is inspected online by a laser diameter measuring instrument, and the electric push rod is controlled by an intelligent terminal to drive the shaping wheel radially. The outer wall of the cable, which has not yet cooled and is still in a hot and plastic state, is extruded and trimmed in multiple directions. In addition, secondary trimming can be achieved by using the shaping wheels that are equidistantly distributed on two trimming cylinders to further improve the roundness. In addition, when the laser diameter gauge detects a deviation, it can also control the movement of the electric cylinder and the adjusting rod through the intelligent terminal to fine-tune the position of the outer mold sleeve, making corrections from the root and improving adaptability; The connecting swivel ring allows for easy fixing of the trimming cylinder inside the bidirectional plug-in cylinder. The combination of the limiting boss, limiting pin, and limiting socket limits the trimming cylinder to prevent rotation, ensuring the stability of the monitoring position. It also allows for disassembly and assembly, improving convenience.

[0016] In summary, through the coordinated operation of the detachable adaptive adjustment mechanism and the extrusion trimming mechanism, not only can the ellipticity of the extruded cable be automatically adjusted at the source, but the cable can also be trimmed in multiple directions while still in a hot and plastic state after extrusion. This significantly improves the roundness and dimensional consistency of the cable's outer wall and allows for disassembly and maintenance when not in use, thus enhancing convenience. Attached Figure Description

[0017] 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.

[0018] In the attached diagram: Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the installation structure of the positioning sleeve of the present invention; Figure 3 This is a schematic diagram of the insertion slot structure of the present invention; Figure 4 This is a schematic diagram of the detachable adaptive adjustment mechanism of the present invention; Figure 5 This is a schematic diagram of the installation structure of the outer mold sleeve of the present invention; Figure 6 This is a schematic diagram of the installation structure of the sliding card holder of the present invention; Figure 7 This is a schematic diagram of the installation structure of the sliding sleeve of the present invention; Figure 8 This is a schematic diagram of the installation structure of the trimming cylinder of the present invention; Figure 9 This is a schematic diagram of the extrusion trimming mechanism of the present invention.

[0019] Labels in the diagram: 1. Extruder head; 2. Retaining ring; 3. Detachable adaptive adjustment mechanism; 301. Flange ring; 302. Insertion groove; 303. Positioning sleeve; 304. Anti-rotation insert plate; 305. Splicing ring; 306. Positioning pin; 307. End sleeve; 308. Support rod; 309. Support spring; 310. Sliding sleeve; 311. Guide rod; 312. Adjusting bracket; 313. Outer mold support ring; 314. Outer mold sleeve; 315. Mounting groove; 316. Fixing plate; 317. Positioning guide rod; 318. Sliding seat; 319. Electric cylinder; 320. Adjusting top rod; 4. Extrusion and trimming mechanism; 401. L-shaped plate; 402. Ring frame; 403. Two-way plug-in cylinder; 404. Connecting swivel ring; 405. Trimming cylinder; 406. Limiting boss; 407. Limiting pin; 408. Limiting socket; 409. Cross guide sleeve; 410. Cross slide bar; 411. Concave wheel frame; 412. Shaping wheel; 413. Connecting seat; 414. Electric push rod; 415. Linkage pull plate; 416. Laser diameter gauge. Detailed Implementation

[0020] 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.

[0021] Example: Figure 1-9 As shown, the present invention provides a technical solution, an extrusion die adaptive system for online correction of the ellipticity of the outer wall of a cable, including an extruder head 1, a fixing ring 2 is snapped onto one end of the extruder head 1, and a detachable adaptive adjustment mechanism 3 is provided on the outside of the fixing ring 2, the detachable adaptive adjustment mechanism 3 including a flange ring 301. A flange ring 301 is sleeved on the outside of the fixing ring 2, and a insertion groove 302 is provided at one end of the fixing ring 2; A positioning sleeve 303 is sleeved on the outer side of the fixing ring 2, and an anti-rotation insert 304 is engaged on the inner wall of the positioning sleeve 303. A splicing ring 305 is sleeved on the outside of the positioning sleeve 303, and a positioning pin 306 is connected between the splicing ring 305 and the flange ring 301. An end sleeve 307 is sleeved on the outside of the positioning sleeve 303. Support rods 308 are symmetrically connected at equal intervals on the outside of the end sleeve 307. Support springs 309 are sleeved on the outside of the support rods 308. To facilitate disassembly and assembly, one end of the anti-rotation insert plate 304 is embedded in the insertion groove 302. Both ends of the anti-rotation insert plate 304 slide against the inner wall of the insertion groove 302. Pins are threaded at equal intervals on the outside of the end sleeve 307. One end of the pin passes through the end sleeve 307 and is threaded to one end of the positioning sleeve 303. One end of the support rod 308 is engaged with a sliding sleeve 310. Inside the sliding sleeve 310, a guide rod 311 is sleeved. One end of the guide rod 311 is engaged with an adjusting bracket 312. One end of the adjusting bracket 312 is engaged with an outer mold support ring 313. Inside the outer mold support ring 313, an outer mold sleeve 314 is sleeved. In order to support the outer mold support ring 313, a gasket is engaged with the other end of the support rod 308. The inner diameter of the adjusting bracket 312 is larger than the inner diameter of the outer mold support ring 313. One end of the outer mold sleeve 314 is in contact with one end of the extruder head 1. The outer mold sleeve 314 has equidistant mounting grooves 315 on its outer side. Fixing plates 316 are symmetrically engaged inside the mounting grooves 315, and positioning guide rods 317 are symmetrically engaged between two opposite fixing plates 316. Sliding brackets 318 are movably sleeved on the outer side of each of the two positioning guide rods 317. In order to facilitate the limiting of the outer mold sleeve 314, the opening position of the mounting grooves 315 corresponds to the installation position of the guide rods 311, and there are four mounting grooves 315 in total. One end of the sliding bracket 318 slides against the inner wall of the mounting groove 315. An electric control cylinder 319 is equidistantly connected to the outside of the fixed ring 2 by bolts. One end of the electric control cylinder 319 is movably connected to an adjusting rod 320. In order to adjust the position of the outer mold sleeve 314, the electric control cylinder 319 is powered and controlled by an external power source. One end of the adjusting rod 320 is embedded in the sliding seat 318. One end of the sliding seat 318 is threadedly connected to a locking screw, and one end of the locking screw passes through one end of the adjusting rod 320. An extrusion trimming mechanism 4 is provided on the outside of the extruder head 1. The extrusion trimming mechanism 4 includes an L-shaped plate 401. An L-shaped plate 401 is equidistantly clamped to the outer side of the extruder head 1. An annular frame 402 is clamped to the inner wall of the L-shaped plate 401. A bidirectional insertion cylinder 403 is clamped inside the annular frame 402. Both ends of the bidirectional insertion cylinder 403 are threadedly connected to a connecting rotating ring 404. A trimming cylinder 405 is rotatably connected to one end of the connecting rotating ring 404. A limiting boss 406 is equidistantly clamped to the outer side of the trimming cylinder 405. A limiting pin 407 is clamped to one end of the limiting boss 406. A limiting socket 408 is clamped to the outer side of the bidirectional insertion cylinder 403 corresponding to the outer side of the limiting pin 407. To ensure the horizontality of the cable conveying, one end of the limiting pin 407 is embedded inside the limiting socket 408. Anti-slip textures are evenly distributed on the outer side of the connecting rotating ring 404. The axes of the bidirectional insertion cylinder 403, the trimming cylinder 405, and the extruder head 1 are all located on the same horizontal line. A cross guide sleeve 409 is equidistantly engaged on the outer side of the trimming cylinder 405. A cross slide rod 410 is movably connected inside the cross guide sleeve 409. One end of the cross slide rod 410 is engaged with a concave wheel frame 411 inside the trimming cylinder 405. A shaping wheel 412 is rotatably connected inside the concave wheel frame 411. In order to facilitate the correction of the extruded cable, the outer side of the shaping wheel 412 is provided with an arc surface. Four shaping wheels 412 are installed on one trimming cylinder 405, and the shaping wheels 412 on two trimming cylinders 405 are equidistantly staggered. A connecting seat 413 is equidistantly attached to the outer side of the trimming cylinder 405. An electric push rod 414 is attached inside the connecting seat 413, and a linkage pull plate 415 is attached to one end of the electric push rod 414. One end of the connecting seat 413 corresponds to the laser diameter gauge 416 installed inside the trimming cylinder 405. In order to automatically adjust, one end of the linkage pull plate 415 is fixedly connected to the other end of the cross slide bar 410. The electric push rod 414 and the laser diameter gauge 416 are both powered and controlled by an external power supply and a smart terminal. The signal output end of the laser diameter gauge 416 is connected to the input end of the smart terminal. The signal output end of the smart terminal is connected to the input end of the electric push rod 414 and the electric control cylinder 319.

[0022] The working principle and usage process of this invention are as follows: First, the outer mold sleeve 314 is placed inside the positioning sleeve 303, and one end of the adjusting rod 320 is embedded and fixed inside the sliding bracket 318. The sliding bracket 318 is installed in the mounting groove 315 on the outer mold sleeve 314 through the cooperation of the fixing plate 316 and the positioning guide rod 317, so that the four adjusting rods 320 can support and fix the outer mold sleeve 314 inside the positioning sleeve 303. Then, the cooperation between the insertion slot 302 and the anti-rotation insert plate 304 facilitates the sliding of the positioning sleeve 303 onto the outside of the fixing ring 2, so that the splicing ring 305 and the flange ring 301 fit together, making it easy to pass the positioning pin 306 through the splicing ring 305 and the flange ring 301, fixing the position of the positioning sleeve 303 and the outer mold sleeve 314, forcing one end of the outer mold sleeve 314 to fit tightly with one end inside the fixing ring 2, preventing gaps and ensuring the extrusion effect; Next, the end sleeve 307 is rotated and installed on the positioning sleeve 303. Through the cooperation of the support rod 308, support spring 309, sliding sleeve 310 and guide rod 311 on the end sleeve 307, the adjusting bracket 312 and the outer mold support ring 313 are fixed to one end of the positioning sleeve 303, and one end of the outer mold support ring 313 is sleeved on one end of the outer mold sleeve 314, which further provides auxiliary support for the outer mold sleeve 314, ensuring the stability of the outer mold sleeve 314 and making it fit tightly with the inside of the fixing ring 2. Next, the connecting ring 404 is rotated and inserted into the bidirectional plug-in cylinder 403, and one end of the limiting pin 407 on the limiting boss 406 is embedded into the limiting socket 408, thereby positioning the position of the trimming cylinder 405 to prevent deviation and facilitate subsequent monitoring and correction. During operation, when the cable passes through the extruder head 1, the fixing ring 2, and the outer mold sleeve 314, it is easy to wrap the outer side of the cable with rubber. The cable passing through the outer mold sleeve 314 continues to be pulled and passes through the bidirectional plug-in cylinder 403. It is convenient to use four laser diameter gauges 416 on the inner wall of the trimming cylinder 405 at one end of the bidirectional plug-in cylinder 403 to monitor the passing cable from four directions. When the ellipticity of the cable outer wall deviates, the laser diameter gauges 416 transmit the signal to the intelligent terminal in time, so that the intelligent terminal controls the electric cylinder 319 on the side of the cable outer wall ellipticity deviation to move, push the adjusting rod 320 to extend, and push the sliding seat 318 and the outer mold sleeve 314 to move. At the same time, the intelligent terminal also controls the electric cylinder 319 on the opposite side of the ellipticity deviation to retract, pull the adjusting rod 320 to retract, and then pull the outer mold sleeve 314 to move through the sliding seat 318. The position of the outer mold sleeve 314 is intelligently adjusted, realizing real-time correction and ensuring the uniformity of extrusion. Next, since one end of the adjusting rod 320 is connected to the sliding seat 318, and the sliding seat 318 is movably sleeved on the outside of the positioning guide rod 317, when the outer mold sleeve 314 is adjusted, the sliding seats 318 on the other two adjusting rods 320 can slide along the positioning guide rod 317 and still maintain the connection with the outer mold sleeve 314, ensuring the push-pull effect of the subsequent adjusting rods 320 and improving the adjustment range; The outer mold support ring 313 moves with the adjustment of the outer mold sleeve 314, and with the cooperation of the support rod 308, support spring 309, sliding sleeve 310 and guide rod 311, the support effect can still be guaranteed after the adjustment bracket 312 and the outer mold support ring 313 move, thus improving the stability of the outer mold sleeve 314. Next, the intelligent terminal also synchronously controls the electric push rods 414 on the side of the ellipticity deviation and the opposite side to extend and retract respectively, and through the cooperation of the linkage pull plate 415, pushes the cross slide rod 410 to slide along the inner wall of the cross guide sleeve 409, thereby pushing the concave wheel frame 411 and the shaping wheel 412 to move, so that the shaping wheel 412 fits against the surface of the cable and squeezes and trims the newly extruded cable. Next, the cable continues to be pulled, and when it passes through another trimming cylinder 405, the ellipticity of the cable is monitored again from four other directions by the laser diameter measuring instrument 416. When a deviation occurs, the electric control cylinder 319 is controlled to push the adjusting rod 320 to adjust the outer mold sleeve 314. At the same time, the electric push rod 414 on the trimming cylinder 405 is controlled to push the shaping wheel 412 to move, and the extruded cable is trimmed a second time. Finally, when it is necessary to replace the outer mold sleeve 314 and the shaping wheel 412 for cleaning and maintenance, the locking screw, pin and positioning pin 306 can be loosened, and the trimming cylinder 405, end sleeve 307 and outer mold sleeve 314 can be removed in sequence for quick replacement and maintenance.

[0023] 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. An adaptive extrusion die system for online correction of cable outer wall ellipticity, comprising an extruder head (1), characterized in that: One end of the extruder head (1) is fitted with a fixing ring (2), and a detachable adaptive adjustment mechanism (3) is provided on the outside of the fixing ring (2). The detachable adaptive adjustment mechanism (3) includes a flange ring (301). A flange ring (301) is sleeved on the outside of the fixing ring (2), and a insertion groove (302) is provided at one end of the fixing ring (2). The fixing ring (2) is sleeved with a positioning sleeve (303) on the outside, and the positioning sleeve (303) is fitted with an anti-rotation insert plate (304) on the inner wall of the positioning sleeve (303). The positioning sleeve (303) is fitted with a splicing ring (305) on the outside, and a positioning pin (306) is connected between the splicing ring (305) and the flange ring (301). The positioning sleeve (303) is fitted with an end sleeve (307) on the outside, and a support rod (308) is symmetrically connected at equal intervals on the outside of the end sleeve (307), and a support spring (309) is fitted on the outside of the support rod (308). One end of the support rod (308) is fitted with a sliding sleeve (310), and a guide rod (311) is fitted inside the sliding sleeve (310). One end of the guide rod (311) is fitted with an adjusting bracket (312), and one end of the adjusting bracket (312) is fitted with an outer mold support ring (313). An outer mold sleeve (314) is fitted inside the outer mold support ring (313).

2. The extrusion die adaptive system for online correction of cable outer wall ellipticity according to claim 1, characterized in that: One end of the anti-rotation insert plate (304) is embedded inside the insertion groove (302), and both ends of the anti-rotation insert plate (304) slide against the inner wall of the insertion groove (302). The outer side of the end sleeve (307) is threaded with pins at equal intervals, and one end of the pin passes through the end sleeve (307) and is threaded to one end of the positioning sleeve (303).

3. The extrusion die adaptive system for online correction of cable outer wall ellipticity according to claim 1, characterized in that: The other end of the support rod (308) is fitted with a gasket, the inner diameter of the adjusting bracket (312) is larger than the inner diameter of the outer mold support ring (313), and one end of the outer mold sleeve (314) is in contact with one end of the extruder head (1).

4. The extrusion die adaptive system for online correction of cable outer wall ellipticity according to claim 1, characterized in that: The outer mold sleeve (314) has mounting grooves (315) equidistantly opened on the outer side. Fixing plates (316) are symmetrically engaged inside the mounting grooves (315), and positioning guide rods (317) are symmetrically engaged between the two opposite fixing plates (316). Sliding brackets (318) are movably sleeved on the outer side of the two positioning guide rods (317). The fixed ring (2) is connected to an electric control cylinder (319) at equal intervals by bolts on the outside. One end of the electric control cylinder (319) is movably connected to an adjusting rod (320).

5. An adaptive extrusion die system for online correction of cable outer wall ellipticity according to claim 4, characterized in that: The opening position of the mounting groove (315) corresponds to the installation position of the guide rod (311), and there are four mounting grooves (315). One end of the sliding bracket (318) slides against the inner wall of the mounting groove (315).

6. The extrusion die adaptive system for online correction of cable outer wall ellipticity according to claim 4, characterized in that: The electric cylinder (319) is powered and controlled by an external power source. One end of the adjusting rod (320) is embedded inside the sliding seat (318). One end of the sliding seat (318) is threaded with a locking screw, and one end of the locking screw passes through one end of the adjusting rod (320).

7. The extrusion die adaptive system for online correction of cable outer wall ellipticity according to claim 1, characterized in that: An extrusion trimming mechanism (4) is provided on the outside of the extruder head (1), and the extrusion trimming mechanism (4) includes an L-shaped plate (401). An L-shaped plate (401) is equidistantly clamped to the outer side of the extruder head (1). An annular frame (402) is clamped to the inner wall of the L-shaped plate (401). A bidirectional insertion cylinder (403) is clamped inside the annular frame (402). Both ends of the bidirectional insertion cylinder (403) are threaded with connecting rings (404). One end of the connecting ring (404) is rotatably connected to a trimming cylinder (405). Limiting bosses (406) are equidistantly clamped to the outer side of the trimming cylinder (405). One end of the limiting bosses (406) is clamped with a limiting pin (407). A limiting socket (408) is clamped to the outer side of the bidirectional insertion cylinder (403) corresponding to the outer side of the limiting pin (407). The trimming cylinder (405) is equidistantly fitted with cross guide sleeves (409) on its outer side. A cross slide rod (410) is movably connected inside the cross guide sleeve (409). One end of the cross slide rod (410) is fitted with a concave wheel frame (411) inside the trimming cylinder (405). A shaping wheel (412) is rotatably connected inside the concave wheel frame (411). The trimming cylinder (405) is equidistantly connected to a connecting seat (413), and an electric push rod (414) is connected inside the connecting seat (413), and one end of the electric push rod (414) is connected to a linkage pull plate (415). One end of the connecting seat (413) corresponds to the laser diameter measuring instrument (416) installed inside the trimming cylinder (405).

8. An adaptive extrusion die system for online correction of cable outer wall ellipticity according to claim 7, characterized in that: One end of the limiting pin (407) is embedded inside the limiting socket (408), and the outer side of the connecting ring (404) is evenly provided with anti-slip texture. The axes of the bidirectional plug-in cylinder (403), the trimming cylinder (405) and the extruder head (1) are all located on the same horizontal line.

9. An adaptive extrusion die system for online correction of cable outer wall ellipticity according to claim 7, characterized in that: The outer side of the shaping wheel (412) is provided with an arc surface. Four shaping wheels (412) are installed on one of the trimming cylinders (405), and the shaping wheels (412) on the two trimming cylinders (405) are distributed at equal intervals and alternately.

10. An adaptive extrusion die system for online correction of cable outer wall ellipticity according to claim 7, characterized in that: One end of the linkage pull plate (415) is fixedly connected to the other end of the cross slide bar (410). The electric push rod (414) and the laser diameter measuring instrument (416) are both powered and controlled by an external power supply and a smart terminal. The signal output end of the laser diameter measuring instrument (416) is connected to the input end of the smart terminal. The signal output end of the smart terminal is connected to the input end of the electric push rod (414) and the electric cylinder (319).

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