Automatic deviation adjusting device and method for cable extrusion molding production line

Abstract

The invention discloses an automatic deviation adjusting device and method for a cable extrusion molding production line, the device comprises a machine base and a deviation adjusting assembly, and an outlet, a first cylindrical cavity, a second cylindrical cavity, a first feeding channel communicated with the first cylindrical cavity and a second feeding channel communicated with the second cylindrical cavity which are communicated in sequence are formed in the machine base; the deviation adjusting assembly comprises a plurality of limiting pieces arranged in the first cylindrical cavity, the plurality of limiting pieces are arranged at intervals in the circumferential direction of the wire core, and each limiting piece comprises a limiting part used for being in sliding contact with the wire core; when a wire core enters the first cylindrical cavity, a plastic insulating material flowing in from the first feeding channel fills a space between any two adjacent limiting pieces. And when the wire core moves to the second cylindrical cavity, the plastic insulating material between the two adjacent limiting pieces and the plastic insulating material flowing in from the second feeding channel jointly fill a space formed after the limiting pieces are separated from the wire core. According to the technical scheme, the wire core can be kept in the middle of the insulating layer.

Description

Technical Field

[0001] The invention relates to the technical field of cable extrusion, and in particular to an automatic deviation adjustment device and method for a cable extrusion production line. Background Art

[0002] Cable extrusion is a key process in cable production. It forms a uniform insulation layer by extruding molten insulation material onto the conductor. In this process, it is crucial to keep the conductor (core) centered in the insulation layer, which is called "bias adjustment". If the bias adjustment is not performed properly, the thickness of the insulation layer may be uneven. The uneven insulation layer may increase the local electric field strength and increase the risk of cable breakdown. At the same time, the weak parts are more susceptible to mechanical damage, reducing the overall reliability of the cable.

[0003] The existing deviation adjustment technology mainly adjusts the axis of the wire core outlet to make it consistent with the central axis of the extrusion mold. When the wire core moves from the wire core outlet to the inside of the extrusion mold, plastic insulating material is injected into the extrusion mold. The plastic insulating material can be wrapped on the outer wall of the wire core. Subsequently, by cooling the temperature of the extrusion mold, the insulating material can be solidified and formed into the insulating layer of the cable.

[0004] However, even if the core outlet is initially aligned with the central axis of the extrusion die, the extruded product still has the phenomenon that the core is not centered in the insulation layer. This phenomenon is caused by the complex interaction of multiple factors. In the actual extrusion process, the core is affected by multiple dynamic forces when it passes through the outlet and moves in the mold cavity. First, due to the flexible characteristics of the core itself, microscopic elastic deformation may occur during the movement, causing it to deviate from the ideal central axis instantaneously. Secondly, the flow of insulating material in the mold will exert uneven radial pressure on the core, and this asymmetry of pressure distribution may cause slight displacement of the core. In addition, mechanical vibrations are inevitably generated during the operation of the extrusion equipment. These vibrations act on the core and mold system through various transmission paths, further affecting the stability of the core in the mold. The individual or synergistic effects of these factors make it difficult to effectively ensure the centering position of the core in the insulation layer in continuous extrusion production, even with the traditional static deviation adjustment technology. Summary of the invention

[0005] The main purpose of the present invention is to solve the technical problem that the extrusion technology in the prior art will cause the core to be not centered in the insulation layer.

[0006] A first aspect of the present invention provides an automatic deviation adjustment device for a cable extrusion production line, comprising a machine base and a deviation adjustment component; An outlet, a first cylindrical cavity and a second cylindrical cavity are formed in the machine base, which are connected in sequence. The outlet, the first cylindrical cavity and the second cylindrical cavity are arranged on the same axis. A first feed channel connected to the first cylindrical cavity and a second feed channel connected to the second cylindrical cavity are provided on the machine base. The outlet is used to supply the core of the cable to enter the first cylindrical cavity. The deviation adjustment assembly includes a plurality of stoppers arranged in the first cylindrical cavity, the plurality of stoppers are arranged at intervals in the circumferential direction of the wire core, and each of the stoppers includes a stopper portion for slidingly contacting the wire core; Among them, when the wire core enters the first cylindrical cavity, the plastic insulating material flowing in from the first feed channel fills the space between any two adjacent limiting members; when the wire core moves to the second cylindrical cavity, the plastic insulating material located between the two adjacent limiting members and the plastic insulating material flowing in from the second feed channel jointly fill the space formed after the limiting members are out of contact with the wire core.

[0007] Optionally, the limiting member is provided in a sheet-like structure.

[0008] Optionally, a transition side edge is formed on a side of each of the limiting members close to the second cylindrical cavity, one end of the transition side edge is arranged close to the limiting portion, and the other end of the transition side edge extends in an axial direction away from the first cylindrical cavity; In the direction from the first cylindrical cavity to the second cylindrical cavity, the gap between the transition side edge and the wire core tends to increase.

[0009] Optionally, the limiting portion is movably arranged in a radial direction of the first cylindrical cavity.

[0010] Optionally, the stopper comprises a fixed component and a movable component, the fixed component is fixed to the inner wall of the first cylindrical cavity, a through cavity is provided in the fixed component, the through cavity forms a protruding opening at the end of the fixed component close to the axis of the first cylindrical cavity, and forms an adjustment opening at the end of the fixed component away from the wire core, and an adjustment hole connected to the adjustment opening is provided through the cavity wall of the first cylindrical cavity; The movable component is movably disposed in the through cavity and can be extended from the extension port, and the movable component is formed with the limiting portion; The automatic deviation adjustment device of the cable extrusion production line also includes an adjustment component and a sealing component. The adjustment component is arranged through the adjustment hole and the adjustment port and is connected to the movable component. The sealing component fills the gap between the adjustment component and the inner wall of the adjustment hole.

[0011] Optionally, an identification portion is provided on an outer peripheral wall of the adjusting component, and the identification portion is used to identify the interval between the limiting portion and the wire core located in the first cylindrical cavity in the radial direction of the first cylindrical cavity.

[0012] Optionally, at least one through hole is formed through the movable component, and the through hole is used for allowing the plastic insulating material to flow between spaces on opposite sides of the movable component.

[0013] Optionally, a rotatable ball is provided on a side edge of the movable component away from the adjusting component, and the ball forms the limiting portion.

[0014] A second aspect of the present invention provides an automatic deviation adjustment method for a cable extrusion production line, comprising: S1, introducing the wire core from the outlet into the first cylindrical cavity, so that the peripheral wall of the wire core contacts the limiting parts of the plurality of limiting members; S2, injecting plastic insulating material into the first cylindrical cavity through the first feeding channel, so that the plastic insulating material fills the space between adjacent limit members; S3, control the core wire to move toward the second cylindrical cavity; S4. During the movement of the wire core, inject plastic insulating material into the second cylindrical cavity through the second feed channel.

[0015] The automatic deviation adjustment device of the cable extrusion production line of the present invention provides continuous, multi-point support for the wire core by providing a plurality of limiters arranged at intervals along the circumference of the wire core in the first cylindrical cavity, each of which has a limiter in sliding contact with the wire core. This design effectively addresses the problem of micro-scale elastic deformation caused by the flexibility of the wire core itself. Even during high-speed movement, the continuous contact of the limiter can quickly correct the instantaneous deviation of the wire core and maintain it in the ideal center axis position.

[0016] At the same time, this multi-point support structure also significantly reduces the impact of mechanical vibrations generated by the operation of the extrusion equipment on the stability of the wire core. When the vibration is transmitted to the wire core and the mold system through various paths, multiple limiters can disperse and absorb the vibration energy, preventing the accumulation of vibrations from causing the wire core to deviate significantly from the center position.

[0017] When the core moves, the plastic insulating material injected by the first feed channel fills the space between adjacent stoppers. Even if the molten insulating material exerts uneven radial pressure on the core during flow, the presence of the stoppers can effectively offset these unbalanced forces and maintain the center position of the core.

[0018] As the wire core moves toward the second cylindrical cavity, part of the insulating material in the first cylindrical cavity enters the second cylindrical cavity along with the wire core. This preformed layer of insulating material, although not yet solidified, can maintain the centering state of the wire core to a certain extent because it is evenly distributed around the wire core. When the insulating material of the second feed channel is injected, this preformed uniform layer helps to balance the uneven pressure that may be generated by the newly injected material, further ensuring the stability of the wire core in the second cylindrical cavity.

[0019] This continuous, multi-stage deviation adjustment mechanism ensures that the wire core remains centered throughout the extrusion process, from the first cylindrical cavity to the second cylindrical cavity. It effectively solves the influence of multiple dynamic factors such as wire core flexibility deformation, equipment vibration, and material flow pressure that traditional deviation adjustment technology is difficult to deal with, and significantly improves the concentricity and uniformity of the insulation layer of the final product. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of an embodiment of an automatic deviation adjustment device for a cable extrusion production line of the present invention; Figure 2 for Figure 1 A partial enlarged view of the middle A; Figure 3 for Figure 1 A cross-sectional schematic diagram of; Figure 4 for Figure 3 A partial enlarged view of Figure 5 for Figure 1 Another cross-sectional schematic diagram of; Figure 6 for Figure 5 Enlarged view after omitting some structures; Figure 7 The present invention is a schematic flow chart of the automatic deviation adjustment method for the cable extrusion production line.

[0022] Description of Figure Numbers: 1. Machine base; 11. Outer seat; 111. First cylindrical cavity; 112. Second cylindrical cavity; 12. Inner seat; 121. Outlet; 2. Adjustment assembly; 21. Limiting member; 211. Transition side edge; 212. Fixed member; 212a. Through cavity; 213. Movable member; 213a. Limiting member; 213b. Through hole; 3. First feed channel; 4. Second feed channel; 5. Adjustment member; 51. Identification member; 6. Sealing member.

[0023] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0026] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, "and / or" in the full text includes three solutions. Taking A and / or B as an example, it includes technical solution A, technical solution B, and technical solution that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, which must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0027] An embodiment of the present application provides an automatic deviation adjustment device for a cable extrusion production line. Figures 1 to 6 The automatic deviation adjustment device of the cable extrusion production line includes a machine base 1 and a deviation adjustment component 2; An outlet 121, a first cylindrical cavity 111 and a second cylindrical cavity 112 are formed in the machine base 1, which are connected in sequence. The outlet 121, the first cylindrical cavity 111 and the second cylindrical cavity 112 are arranged on the same axis. The machine base 1 is provided with a first feed channel 3 connected to the first cylindrical cavity 111 and a second feed channel 4 connected to the second cylindrical cavity 112. The outlet 121 is used to supply the core of the cable to enter the first cylindrical cavity 111. The deviation adjustment assembly 2 includes a plurality of stoppers 21 disposed in the first cylindrical cavity 111, the plurality of stoppers 21 are arranged at intervals in the circumferential direction of the wire core, and each of the stoppers 21 includes a stopper portion 213a for slidingly contacting the wire core; Among them, when the wire core enters the first cylindrical cavity 111, the plastic insulating material flowing in from the first feed channel 3 fills the space between any two adjacent limiting members 21; when the wire core moves to the second cylindrical cavity 112, the plastic insulating material located between the two adjacent limiting members 21 and the plastic insulating material flowing in from the second feed channel 4 jointly fill the space formed after the limiting member 21 is out of contact with the wire core.

[0028] Specifically, the base 1 includes an outer base 11 and an inner base 12. A cavity is formed in the outer base 11, and the inner base 12 is arranged in the cavity. A core cavity is provided through the center of the inner base 12 for the passage of the wire core. An inlet and an outlet 121 are provided at both ends of the inner base 12. The first feed channel 3 is connected to the cavity, and its connection point with the cavity is located between the inlet and the outlet 121. In the cavity, a first cylindrical cavity 111 and a second cylindrical cavity 112 are sequentially provided on the side of the outlet 121 away from the inlet. The wire core enters the core cavity from the inlet, comes out from the outlet 121, and then passes through the first cylindrical cavity 111 and the second cylindrical cavity 112 in sequence.

[0029] In specific implementation, in some embodiments, the cavity wall of the first cylindrical cavity 111 and the cavity wall of the second cylindrical cavity 112 are integrally formed, and the cavity walls of the two cylindrical cavities are defined as the cylindrical wall. Further, the cylindrical wall can move in the radial direction of the outlet 121. The purpose of such design is to facilitate the adjustment of the outlet 121, the first cylindrical cavity 111 and the second cylindrical cavity 112 on the same axis. Of course, in other embodiments, the cylindrical wall and the inner seat 12 can also be adjusted and fixed before use.

[0030] The limiter 21 is the core component of the deviation adjustment component 2, which balances the requirements for radial limitation and axial free movement of the wire core. In some embodiments, the surface of the limiter 213a of each limiter 21 adopts an arc surface design to ensure point contact or line contact with the wire core, rather than surface contact. This design significantly reduces the contact area and minimizes friction. In addition, the limiter 213a is made of high molecular polymer materials (such as polytetrafluoroethylene or ultra-high molecular weight polyethylene), which have extremely low friction coefficients and excellent wear resistance. The surface of the limiter 213a is precisely machined and polished, and the surface roughness can reach Ra0.1μm or less, which further reduces the friction with the wire core while maintaining sufficient radial support force. In other embodiments, a plurality of rolling elements (which may be small balls or rollers) may also be provided on the side of the limiter 21 close to the wire core, and the plurality of rolling elements are spaced apart in the axial direction of the wire core, and the surface of the rolling element forms a part of the limiter 213a. This rolling design further reduces the friction resistance of the wire core during axial movement, while ensuring precise radial positioning. The rolling element can be made of ceramic material, which has high hardness and wear resistance, ensuring long-term stability. In order to adapt to wire cores of different diameters.

[0031] When the wire core enters the first cylindrical cavity 111, the plastic insulating material flowing in from the first feed channel 3 will fill the space between any two adjacent stoppers 21. This process not only provides a preliminary insulating layer for the wire core, but also plays a role of lubrication and buffering, which helps to reduce the friction and wear between the wire core and the stopper 21. Due to the special design of the stopper 21, such as the arc-shaped stopper 213a or the rolling element structure, the insulating material can be evenly distributed around the wire core without affecting the precise positioning of the wire core by the stopper 21.

[0032] As the wire core continues to move to the second cylindrical cavity 112, the plastic insulating material between the adjacent limiting members 21 will be brought into the second cylindrical cavity 112 as the wire core moves. At the same time, fresh plastic insulating material flowing in from the second feed channel 4 also begins to be injected. These two parts of material together fill the space formed after the limiting member 21 is out of contact with the wire core. This double filling mechanism ensures the continuity and uniformity of the insulation layer. The initial insulation layer formed in the first cylindrical cavity 111 provides the basis for subsequent filling, and the supplementation of the second feed channel 4 ensures the integrity and ideal thickness of the insulation layer.

[0033] This segmented injection and filling method can not only ensure the quality of the insulation layer, but also effectively deal with the slight deviation that may occur in the wire core during movement. Even in the second cylindrical cavity 112 where the stopper 21 no longer directly contacts the wire core, the already formed insulation layer and the continuously injected material can continue to play a guiding and supporting role to maintain the center position of the wire core. In addition, this method also allows the properties or proportions of the insulation material to be adjusted at different stages to optimize the performance of the final product.

[0034] It can be understood that the automatic deviation adjustment device of the cable extrusion production line of the present invention provides continuous, multi-point support for the core through a plurality of limit members 21 arranged in the first cylindrical cavity 111 and spaced apart along the circumference of the core, each of which has a limit portion 213a in sliding contact with the core. This design effectively addresses the problem of micro-scale elastic deformation caused by the flexibility of the core itself. Even during high-speed movement, the continuous contact of the limit member 21 can quickly correct the instantaneous deviation of the core and maintain it in the ideal center axis position.

[0035] At the same time, this multi-point support structure also significantly reduces the impact of mechanical vibrations generated by the operation of the extrusion equipment on the stability of the wire core. When the vibration is transmitted to the wire core and the mold system through various paths, the multiple limiters 21 can disperse and absorb the vibration energy, preventing the accumulation of vibrations from causing the wire core to deviate significantly from the center position.

[0036] When the core moves, the plastic insulating material injected by the first feed channel 3 fills the space between adjacent stoppers 21. Even if the molten insulating material exerts uneven radial pressure on the core during flow, the stoppers 21 can effectively offset these unbalanced forces and maintain the center position of the core.

[0037] As the wire core moves toward the second cylindrical cavity 112, part of the insulating material in the first cylindrical cavity 111 enters the second cylindrical cavity 112 along with the wire core. This preformed insulating material, although not yet solidified, can maintain the centering state of the wire core to a certain extent because it is evenly distributed around the wire core. When the insulating material of the second feed channel 4 is injected, this preformed uniform layer helps to balance the uneven pressure that may be generated by the newly injected material, further ensuring the stability of the wire core in the second cylindrical cavity 112.

[0038] This continuous, multi-stage deviation adjustment mechanism ensures that the wire core always remains centered from the first cylindrical cavity 111 to the second cylindrical cavity 112 during the entire extrusion process. It effectively solves the influence of multiple dynamic factors such as wire core flexibility deformation, equipment vibration, and material flow pressure that are difficult to deal with by traditional deviation adjustment technology, and significantly improves the concentricity and uniformity of the insulation layer of the final product.

[0039] Optionally, the position-limiting member 21 is provided in a sheet-like structure. Specifically, the position-limiting member 21 includes a fixed member 212 and a movable member 213. In the present embodiment, the fixed member 212 and the movable member 213 are both provided in a sheet-like structure. Such a configuration can ensure that the wire core is limited in the first cylindrical cavity 111 while preventing the position-limiting member 21 from occupying too much space, resulting in the need to subsequently add more insulating material to the second cylindrical cavity 112 (more insulating material is likely to exert an unbalanced force on the wire core during the process of flowing into the second cylindrical cavity 112, resulting in the wire core being unable to maintain an axial position).

[0040] Optionally, a transition side edge 211 is formed on one side of each of the limiting members 21 close to the second cylindrical cavity 112, one end of the transition side edge 211 is arranged close to the limiting portion 213a, and the other end of the transition side edge 211 extends in an axial direction away from the first cylindrical cavity 111; In the direction from the first cylindrical cavity 111 to the second cylindrical cavity 112 , the gap between the transition side edge 211 and the wire core tends to increase.

[0041] Specifically, the core purpose of this structural design is to prevent the core from deviating from the axial direction to the greatest extent possible during the process of the core moving from the first cylindrical cavity 111 to the second cylindrical cavity 112. The design of the transition side edge 211 allows the space between the core and the limiter 21 to increase slowly and gradually, rather than suddenly causing a larger space to appear (meaning that the transition side edge 211 is perpendicular to the core, causing a larger space to suddenly appear on the side of the core when the core is separated from the limiter 21). This allows the plastic insulating material to slowly and evenly fill the gradually increasing space between the core and the limiter 21. This slow filling process greatly reduces the impact force of the material flow on the core. Without this transition design, when the core suddenly leaves the limiter 21, a large amount of material will quickly flow into the suddenly appearing gap, generating a large flow impact force, which may cause the core to deviate from the axis instantly.

[0042] In specific implementation, in some embodiments, the transition side edge 211 is in a straight line shape. This is the simplest implementation method, which is easy to process and manufacture. This design allows the gap between the transition side edge 211 and the core to increase linearly. In other embodiments, the transition side edge 211 can be a concave curve (such as a parabola). The curve design can provide a smoother and more delicate width change, which helps to better control the flow of materials. In some other embodiments, the transition side edge 211 can be designed to be stepped. In addition, the above-mentioned embodiments can also be combined, and there is no specific limitation on this.

[0043] Optionally, the limiting portion 213a is movably arranged in the radial direction of the first cylindrical cavity 111. It is not difficult to understand that with such an arrangement, the position of the limiting portion 213a can be adjusted according to the needs of the use scenario. When the wire core is initially moved into the first cylindrical cavity 111, the limiting portion 213a can be kept away from the axis of the first cylindrical cavity 111, so that the wire core can be smoothly moved to the middle of the plurality of limiting portions 213a, and then the limiting portion 213a is allowed to contact the peripheral wall of the wire core, so as to avoid the space formed by the plurality of limiting portions 213a being too small at the beginning, resulting in the wire core being unable to smoothly move to the middle of the plurality of limiting portions 213a.

[0044] Further, the stopper 21 includes a fixed component 212 and a movable component 213, the fixed component 212 is fixed on the inner wall of the first cylindrical cavity 111, a through cavity 212a is provided in the fixed component 212, the through cavity 212a forms a protruding opening 121 on the end of the fixed component 212 close to the axis of the first cylindrical cavity 111, and an adjustment opening is formed on the end of the fixed component 212 away from the wire core, and an adjustment hole connected to the adjustment opening is penetrated on the cavity wall of the first cylindrical cavity 111; The movable component 213 is movably disposed in the through cavity 212a and can be extended from the extension opening 121. The movable component 213 is formed with the limiting portion 213a. The automatic deviation adjustment device of the cable extrusion production line also includes an adjustment component 5 and a sealing component 6. The adjustment component 5 is arranged through the adjustment hole and the adjustment port and is connected to the movable component 213. The sealing component 6 fills the gap between the adjustment component 5 and the inner wall of the adjustment hole.

[0045] Specifically, the fixed component 212 is the fixed part of the limiter 21, and can be made of metal, high-strength plastic or composite material. The movable component 213 is a movable structure, and can be made of wear-resistant materials such as ceramics, high molecular polymers or special metal alloys. The through cavity 212a is a cavity in the fixed component 212, which provides a moving space for the movable component 213. The adjusting component 5 can be a screw, a push rod or other mechanical structure that can control the movement. The seal 6 can be an O-ring, a sealing gasket or other elastic sealing material to prevent leakage and contamination.

[0046] This adjustable structure allows the multiple limiting parts 213a to be temporarily moved away from the axis of the first cylindrical cavity 111 by moving the movable part 213 before the wire core enters the first cylindrical cavity 111. This pre-adjustment process greatly reduces the difficulty of introducing the wire core between the multiple limiting parts 21, and effectively reduces the scraping or deformation that may occur to the wire core during the initial positioning stage. After the wire core successfully enters the first cylindrical cavity 111, the operator can move the movable part 213 again to accurately make the limiting part 213a abut against the wire core to achieve an ideal limiting effect. This operating method not only simplifies the initial positioning process of the wire core, but also significantly improves the accuracy and controllability of the adjustment. In addition, this design also allows the position of the limiting part 213a to be fine-tuned at any time as needed during the production process to adapt to the slight changes or offsets that may occur in the wire core, thereby continuously ensuring the uniformity and concentricity of the insulation layer.

[0047] There are many ways to fix the adjusting component 5. For example, a circle that can be matched with a bolt can be set on the peripheral wall of the adjusting component 5, and a threaded hole can be set on the outer seat 11. The bolt passes through the circle. After the adjusting component 5 moves, the bolt and the threaded hole can be threadedly matched, so that the adjusting component 5 can be relatively stably maintained at the position after the move. In addition, the adjusting component 5 can be interference-fitted with the adjusting hole, so that the adjusting component 5 can be relatively stably fixed without the influence of external forces. In addition, after the seal 6 fills the gap between the adjusting component 5 and the adjusting hole, it can also fix the adjusting component 5 at the position after the move.

[0048] Optionally, an identification portion 51 is provided on the outer peripheral wall of the adjusting component 5 , and the identification portion 51 is used to identify the interval between the limiting portion 213 a and the wire core located in the first cylindrical cavity 111 in the radial direction of the first cylindrical cavity 111 .

[0049] Specifically, the marking portion 51 can be a scale line, a digital mark, a color strip or other visual indication structure. These markings can be fixed on the outer peripheral wall of the adjustment component 5 by etching, printing, embedding or pasting.

[0050] By comparing the identification parts 51 on multiple adjustment parts 5, the operator can intuitively ensure that the moving distances of all movable parts 213 in the radial direction of the first cylindrical cavity 111 are consistent. This visual comparison method greatly reduces the adjustment error and effectively avoids the problem that some movable parts 213 move too much and cause excessive squeezing of the wire core, or move insufficiently and fail to fully contact the wire core. Secondly, the operator can intuitively understand the precise position of each limit part 213a by observing the identification part 51, and can make precise adjustments without complex measuring tools. This not only simplifies the adjustment process, but also significantly improves the accuracy and efficiency of the adjustment. At the same time, during daily maintenance and troubleshooting, the position information provided by the identification part 51 also helps technicians quickly diagnose potential problems, such as discovering the abnormal position of a limit part 213a. In general, this design not only improves the accuracy and controllability of the deviation adjustment process, but also enhances the visual management of the entire production process, providing a strong guarantee for the production of high-quality and high-consistency cable products.

[0051] Optionally, at least one through hole 213 b is formed through the movable component 213 , and the through hole 213 b is used for allowing the plastic insulating material to flow between the spaces on two opposite sides of the movable component 213 .

[0052] Specifically, the through hole 213b refers to a hole that completely penetrates the movable part 213. These through holes 213b may be circular, elliptical, conical or other suitable geometric shapes. The through holes 213b allow the plastic insulating material to flow freely on both sides of the limiter 21. This helps to balance the pressure on both sides of the limiter 21 and reduce the uneven pressure distribution that may cause the core to deviate. By providing an additional flow path, the through hole 213b can significantly improve the fluidity and uniformity of distribution of the insulating material throughout the extrusion process. The through hole 213b can promote the transfer and distribution of heat. During the extrusion process, temperature control of the insulating material is crucial to the quality of the final product. The design of the through hole 213b helps to distribute heat more evenly in the material, reducing the risk of local overheating or uneven cooling.

[0053] By optimizing material flow, the through hole 213b design may allow for a higher material flow rate at the same pressure, or reduce the required pressure at the same flow rate.

[0054] Preferably, a rotatable ball is provided on the side edge of the movable part 213 away from the adjusting part 5, and the ball forms the limiting part 213a. This arrangement can reduce the sliding friction between the limiting part 21 and the wire core, and ensure the stable movement of the wire core.

[0055] Another embodiment of the present application further provides an automatic deviation adjustment method for a cable extrusion production line, which is applied to the automatic deviation adjustment device for the cable extrusion production line provided in the above embodiment. Figure 7 The present invention is a flow chart of the automatic deviation adjustment method for a cable extrusion production line.

[0056] See also Figure 7 , the automatic deviation adjustment method of the cable extrusion production line includes: S1, introducing the wire core from the outlet 121 into the first cylindrical cavity 111, so that the peripheral wall of the wire core contacts the limiting portions 213a of the plurality of limiting members 21; Specifically, first, the operator adjusts the movable part 213 of each stopper 21 through the adjustment part 5 so that the stopper 213a is temporarily away from the central axis of the first cylindrical cavity 111. This step creates a channel slightly larger than the diameter of the wire core, providing sufficient space for the smooth introduction of the wire core. For example, for a wire core with a diameter of 10 mm, the stopper 213a can be adjusted to a position 15 mm away from the central axis. Then, the operator carefully guides the wire core from the outlet 121 to the first cylindrical cavity 111. In this process, due to the pre-adjusted larger gap, the wire core can pass smoothly without being scratched or deformed. Once the wire core completely enters the first cylindrical cavity 111, the operator begins to gradually adjust the position of each stopper 21. By observing the marking part 51 on the adjustment part 5, the operator can accurately control the distance that each stopper 213a moves toward the center to ensure that all stoppers 21 are evenly close to the wire core. When all the stoppers 213a lightly touch the surface of the wire core, the operator will check the mark on the adjustment component 5 again to ensure that each stopper 21 is in the same position, so as to achieve uniform support for the wire core. This method not only greatly simplifies the initial positioning process of the wire core, but also significantly improves the accuracy and consistency of positioning. Through this carefully designed introduction and adjustment process, the wire core can achieve an ideal centering position in the first cylindrical cavity 111, laying a solid foundation for the subsequent extrusion process, thereby ensuring the high quality and consistency of the final product.

[0057] S2, injecting plastic insulating material into the first cylindrical cavity 111 through the first feeding channel 3, so that the plastic insulating material fills the space between adjacent limit members 21; Specifically, after the core is precisely positioned at the center of the first cylindrical cavity 111, the operator starts the extruder and injects the plastic insulating material (such as polyethylene or polyvinyl chloride) preheated to an appropriate temperature through the first feed channel 3. These materials are pressed into the first cylindrical cavity 111 in a molten state, first filling the space between adjacent stoppers 21. Due to the through holes 213b of the stoppers 21, the plastic insulating material can flow evenly and be distributed around the core. For example, for a system with four stoppers 21, the plastic insulating material will fill the four intervals at the same time to form four uniform insulating material segments. This segmented filling method effectively prevents the insulating material from exerting uneven pressure on the core during the injection process, thereby maintaining the center position of the core. At the same time, the through holes 213b on the stoppers 21 allow the material to flow between adjacent segments, further ensuring the uniformity of the insulating layer. During the filling process, the operator can control the flow characteristics of the material by adjusting the pressure and speed of the extruder. For cores with larger diameters, higher injection pressures may be required to ensure that the material fully fills all spaces. For thinner wire cores, the injection speed needs to be carefully controlled to avoid deformation of the wire core caused by excessive pressure. This precisely controlled injection process not only ensures the uniformity and concentricity of the insulation layer, but also effectively reduces the formation of bubbles and impurities. In this way, the space between each adjacent stopper 21 is evenly filled with plastic insulating material, laying the foundation for the subsequent molding and cooling process, and finally producing high-quality, stable performance cable products.

[0058] S3, control the core wire to move toward the second cylindrical cavity 112; S4. During the movement of the wire core, plastic insulating material is injected into the second cylindrical cavity 112 through the second feed channel 4.

[0059] Specifically, when the wire core gradually enters the second cylindrical cavity 112 from the first cylindrical cavity 111, the operator starts the extruder connected to the second feed channel 4 and starts to inject the plastic insulating material into the second cylindrical cavity 112. This process requires precise time control and pressure regulation to ensure that the second layer of insulating material is perfectly integrated with the initial insulating layer formed in the first cylindrical cavity 111. The temperature of the plastic insulating material injected into the second cylindrical cavity 112 is slightly higher than that of the material in the first cylindrical cavity 111, usually 10-15°C higher, which helps the two layers of material to blend well. At the same time, the injection pressure needs to be precisely controlled to ensure that the material fully fills the space between the wire core and the wall of the second cylindrical cavity 112, but not too high to avoid causing additional pressure on the wire core. By adjusting the screw speed and pressure of the extruder, the operator can achieve fine control of the injection process. At this stage, there is no obstruction of the stopper 21 in the second cylindrical cavity 112, which allows the insulating material to flow and distribute more freely. The design of the second feed channel 4 usually adopts a multi-point injection method, with multiple injection ports evenly distributed around the second cylindrical cavity 112. This design ensures that the insulating material can evenly cover the wire core and maintain good concentricity even in the absence of the limiter 21. In addition, the temperature control of the second cylindrical cavity 112 is also crucial, and multiple temperature zones need to be set along the direction of movement of the wire core to achieve slow cooling and molding of the insulating material. Through this carefully designed and controlled injection process, the insulating layer formed in the second cylindrical cavity 112 can be perfectly integrated with the initial layer in the first cylindrical cavity 111, while maintaining the ideal thickness and concentricity, and ultimately producing high-quality cable products.

[0060] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An automatic deviation adjustment device for a cable extrusion production line, characterized in that: include: A machine base (1) is formed with an outlet (121), a first cylindrical cavity (111) and a second cylindrical cavity (112) which are connected in sequence, the outlet (121), the first cylindrical cavity (111) and the second cylindrical cavity (112) are arranged on the same axis, the machine base (1) is provided with a first feed channel (3) connected to the first cylindrical cavity (111), and a second feed channel (4) connected to the second cylindrical cavity (112), the outlet (121) is used for supplying a cable core to enter the first cylindrical cavity (111); A deviation adjustment assembly (2), comprising a plurality of stoppers (21) disposed in the first cylindrical cavity (111), the plurality of stoppers (21) being arranged at intervals in the circumferential direction of the wire core, and each of the stoppers (21) comprising a stop portion (213a) for slidingly contacting the wire core; When the wire core enters the first cylindrical cavity (111), the plastic insulating material flowing in from the first feed channel (3) fills the space between any two adjacent limiting members (21); when the wire core moves to the second cylindrical cavity (112), the plastic insulating material located between the two adjacent limiting members (21) and the plastic insulating material flowing in from the second feed channel (4) jointly fill the space formed after the limiting member (21) is out of contact with the wire core.

2. The automatic deviation adjustment device for a cable extrusion production line according to claim 1 is characterized in that: The limiting member (21) is provided in a sheet-like structure.

3. The automatic deviation adjustment device for a cable extrusion production line according to claim 1 is characterized in that: A transition side edge (211) is formed on one side of each of the limiting members (21) close to the second cylindrical cavity (112), one end of the transition side edge (211) is arranged close to the limiting portion (213a), and the other end of the transition side edge (211) extends in an axial direction away from the first cylindrical cavity (111); In the direction from the first cylindrical cavity (111) to the second cylindrical cavity (112), the gap between the transition side edge (211) and the wire core tends to increase.

4. The automatic deviation adjustment device for a cable extrusion production line according to claim 1 is characterized in that: The limiting portion (213a) is movably arranged in the radial direction of the first cylindrical cavity (111).

5. The automatic deviation adjustment device for a cable extrusion production line according to claim 4, characterized in that: The limiting component (21) comprises a fixed component (212) and a movable component (213); the fixed component (212) is fixed to the inner wall of the first cylindrical cavity (111); a through cavity (212a) is provided in the fixed component (212); a protruding opening (121) is formed on the end of the fixed component (212) close to the axis of the first cylindrical cavity (111), and an adjusting opening is formed on the end of the fixed component (212) away from the wire core; an adjusting hole connected to the adjusting opening is provided through the cavity wall of the first cylindrical cavity (111); The movable component (213) is movably disposed in the through cavity (212a) and can be extended from the extension opening (121), and the movable component (213) is formed with the limiting portion (213a); The automatic deviation adjustment device of the cable extrusion production line also includes an adjustment component (5) and a sealing component (6). The adjustment component (5) is arranged through the adjustment hole and the adjustment port and is connected to the movable component (213). The sealing component (6) fills the gap between the adjustment component (5) and the inner wall of the adjustment hole.

6. The automatic deviation adjustment device for a cable extrusion production line according to claim 4, characterized in that: An identification portion (51) is provided on the outer peripheral wall of the adjustment component (5), and the identification portion (51) is used to identify the interval between the limiting portion (213a) and the wire core located in the first cylindrical cavity (111) in the radial direction of the first cylindrical cavity (111).

7. The automatic deviation adjustment device for a cable extrusion production line according to claim 5, characterized in that: At least one through hole (213b) is provided through the movable component (213), and the through hole (213b) is used to allow the plastic insulating material to flow between spaces on opposite sides of the movable component (213).

8. The automatic deviation adjustment device for a cable extrusion production line according to claim 5, characterized in that: A rotatable ball is provided on the side edge of the movable component (213) away from the adjusting component (5), and the ball forms the limiting portion (213a).

9. An automatic deviation adjustment method for a cable extrusion production line, characterized in that: The automatic deviation adjustment method of the cable extrusion production line is applied to the automatic deviation adjustment device of the cable extrusion production line according to any one of claims 1 to 8, and the automatic deviation adjustment method of the cable extrusion production line comprises: S1, introducing the wire core from the outlet (121) into the first cylindrical cavity (111), so that the peripheral wall of the wire core contacts the limiting portions (213a) of the plurality of limiting members (21); S2, injecting plastic insulating material into the first cylindrical cavity (111) through the first feed channel (3), so that the plastic insulating material fills the space between adjacent limit members (21); S3, controlling the wire core to move toward the second cylindrical cavity (112); S4. During the movement of the wire core, plastic insulating material is injected into the second columnar cavity (112) through the second feed channel (4).

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