Eccentricity adjusting device of cable extruder

Abstract

The invention belongs to the technical field of cable extrusion, and particularly relates to an eccentric adjusting device of a cable extruder. According to the device, data collected by a concentricity positioning sensor, an inner mold concentricity position sensor and an outer mold concentricity position sensor are transmitted to a concentricity control module, and the concentricity control module controls multiple sets of radial micro-distance adjusting guide rod motors to conduct micro-distance adjustment on an eccentric adjusting ring after signal processing. And the purpose of accurately adjusting the concentricity of the cable is achieved. The problems that in the prior art, due to the fact that an inner mold mechanism or an outer mold mechanism cannot be monitored in time, in the production process, bad influences are easily caused to the concentricity standard of a cable when the inner mold mechanism or the outer mold mechanism extrudes materials in the feeding process, wrapping of a battery cell and softened plastic is not uniform, and the concentricity of the cable is bad influences are solved. According to the invention, the problem of concentricity deviation during cable production can be accurately corrected, accurate control of cable concentricity is realized, and high-performance, precise and sharp cable products can be produced.

Description

Technical Field

[0001] The invention relates to the technical field of cable extrusion, in particular to an eccentricity adjusting device for a cable extruder. Background Art

[0002] Cable extruder is a kind of equipment used to produce cables. Its main function is to heat and plasticize insulating materials or sheath materials such as plastics and rubber, and then evenly coat them on the outer periphery of the cable core wire by extrusion, so as to form a cable structure with insulation or protection functions. The working process is to add granular or powdered raw materials (such as plastic particles such as polyvinyl chloride and polyethylene) into the hopper of the extruder. The raw materials are transported into the barrel by the rotation of the screw. There is a heating device outside the barrel to heat the raw materials, gradually softening and plasticizing them. The screw rotates continuously in the barrel, pushing the plasticized material forward. At the head of the screw, the material is pressed and extruded through a die of a specific shape to form a continuous insulating layer or sheath layer coated on the cable core wire. The device is mainly composed of an extrusion system, a transmission system, a feeding system, a temperature control system and a die head mold system.

[0003] The announcement number is CN118418418A. The extruder heads of U7 and U14 used by cable manufacturers are not able to adjust the concentricity in a controllable manner. In the prior art, most of the time, the operator adjusts the concentricity by adjusting the mold spacing. However, this method has a lot of randomness and upper limits, and it is difficult to adjust or the degree of adjustment is limited. As customers have higher and higher requirements for the quality of cables, the requirements for concentricity are also getting higher and higher. Most of the original equipment and devices cannot produce cables with such high concentricity. For this reason, it is necessary to purchase an expensive adjustable eccentric head, which adjusts the center position of the outer coating material to achieve the purpose of center adjustment. The cost of the adjustable eccentric head is very high, and its accessories are fragile and expensive. In practice, even if the adjustable eccentric mechanism is installed on the cable extruder, it will cause stagnation and waste of resources. For this reason, it is urgent to develop a low-cost and simple-structured device suitable for eccentric adjustment of cable extruders.

[0004] Although the above existing technologies use technical means to improve the accuracy of cable concentricity during the operation of the cable extruder, they are unable to monitor the inner mold mechanism or the outer mold mechanism in a timely manner, which leads to the production process being prone to adverse effects on the concentricity standard of the cable due to the feeding process causing the inner mold mechanism or the outer mold mechanism to extrude the material, resulting in uneven wrapping of the battery core and the softened plastic, and adverse effects on the concentricity of the cable.

[0005] It should be noted that the above contents belong to the technical knowledge of the inventor and do not necessarily constitute prior art. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides an eccentricity adjustment device for a cable extruder, which solves the problems existing in the prior art.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] An eccentric adjustment device for a cable extruder comprises a fixed seat, which comprises an outer seat body and a ball head placement cavity with a concave front end; an outer hemispherical head inner mold seat, which comprises a tail hemispherical head and a front convex guide structure, wherein the tail hemispherical head is also provided with a rear convex transmission guide rod, an outer mold head is provided outside the tail hemispherical head, the center of the transmission guide rod is a through hole, and the through hole penetrates the radial center of the tail hemispherical head and the front convex guide structure from back to front, one end of the fixed seat is fixedly connected to the transmission guide rod, and a linear elastic component is sleeved inside the transmission guide rod;

[0009] The inner die head includes a guide protrusion with a forward protrusion and a rear end mounting seat; the eccentric adjustment ring includes a ring body;

[0010] A plurality of radial macro adjustment rods for adjusting the ring body for macro adjustment, wherein both ends of the plurality of radial macro adjustment rods are respectively fixedly connected to the ring body and one end of a plurality of radial macro adjustment rod motors of the ring body for cooperatively adjusting the plurality of radial macro adjustment rods for circular motion, and the other end thereof is electrically connected to a concentricity control module for accurately correcting plastic particles and / or satisfying the extrusion shape for cable concentricity offset correction control;

[0011] The tail hemispherical head is provided with a plurality of groups of inner mold guide core wire concentricity position sensors for monitoring the concentricity position of the cable when extruding plastic particles, one end of the plurality of groups of inner mold guide core wire concentricity position sensors is embedded in the tail hemispherical head, and the other end is electrically connected to the concentricity control module; a power supply for providing electric energy to the concentricity control module, one end of the power supply is electrically connected to the concentricity control module, and the other end is electrically connected to the emergency stop switch, and the power supply and the concentricity control module are fixedly connected to one side of the fixing seat;

[0012] The outer die head is provided with an outer die guiding plastic concentricity position sensor for monitoring the concentricity of the outer die, and one end of a plurality of groups of the outer die concentricity position sensors are embedded in both sides of the outer die head, and the other end is electrically connected to the concentricity control module;

[0013] A concentricity positioning sensor is used to monitor the extrusion shape of softened plastic particles and the concentricity position when the battery core is joined. One end of the concentricity positioning sensor is embedded in the transmission guide rod, and the other end is electrically connected to the concentricity control module.

[0014] Furthermore, the concentricity control module controls the multiple groups of radial micro-adjustment rod motors to drive the multiple groups of radial micro-adjustment rods to perform comprehensive automatic fine-tuning control on the ring body, wherein the concentricity control module adjusts the circumferential angular velocity of the ring body by a comprehensive correction coefficient Q of the motor speed of the multiple groups of radial micro-adjustment rods, wherein:

[0015] If Q1 is the preset comprehensive correction coefficient of the motor speed of multiple sets of radial macro adjustment rods, and Q is the actual comprehensive correction coefficient of the motor speed of multiple sets of radial macro adjustment rods, then:

[0016] When Q1>Q, the multiple sets of radial macro adjustment rod motors are in the first correction mode;

[0017] When Q1<Q, the multiple sets of radial macro adjustment rod motors are in the second correction mode.

[0018] Further, if the multiple sets of radial macro adjustment rod motors are in the first correction mode, the comprehensive correction coefficient Q of the multiple sets of radial macro adjustment rod motor speeds is: Q=1-

[0019] in, is the maximum forward or reverse rotation angle of the motors of the multiple sets of radial macro adjustment rods, and i is the corrected angular velocity of the ring body.

[0020] If the multiple sets of radial macro adjustment rod motors are in the second correction mode, the comprehensive correction coefficient Q of the multiple sets of radial macro adjustment rod motor speed is: Q=1+

[0021] in, is the maximum forward or reverse rotation angle of the motor of the multiple sets of radial macro adjustment rods, and i is the correction angular velocity of the ring body.

[0022] Furthermore, the concentricity control module corrects the concentricity of the two according to the changes in the core diameter and the extrusion shape and extrusion amount of the softened plastic particles. The multiple groups of radial micro-adjustment rod motors perform comprehensive adjustments on the ring body, and the ring body performs eccentricity adjustment on the convex guide mechanism in the transmission guide rod for the inner and outer mold production guide concentricity. Therefore, the concentricity control module performs correction according to the correction coefficient O of the inner and outer mold production guide concentricity eccentricity.

[0023] If O1 is the preset multiple groups of radial macro adjustment rod motor speed comprehensive correction coefficient, O is the actual multiple groups of radial macro adjustment rod motor speed comprehensive correction coefficient, then:

[0024] When O1>O, the multiple radial macro adjustment rod motors are in the first correction mode;

[0025] When O1<O, the multiple groups of radial macro adjustment rod motors are in the second correction mode.

[0026] Further, if the multiple sets of radial macro adjustment rod motors are in the first correction mode, the comprehensive correction coefficient O of the multiple sets of radial macro adjustment rod motor speeds is: O=

[0027] in, is the concentricity offset, It is a plurality of sets of radially adjusting the rotational inertia of the transmission rod.

[0028] If the multiple sets of radial macro adjustment rod motors are in the second correction mode, the comprehensive correction coefficient O of the multiple sets of radial macro adjustment rod motor speed is: O=

[0029] in, is the rotational inertia of the guide transmission rod, R is the original rotation angle, and r is the rotational inertia.

[0030] Furthermore, the concentricity control module controls the multiple groups of radial micro-adjustment rod motors to comprehensively adjust the ring body to drive the transmission guide rod for auxiliary correction due to the rotation offset of the transmission guide rod when the plastic particles are extruded and fused with the battery core, and the auxiliary correction coefficient C of the transmission guide rod is obtained;

[0031] If C1 is the preset transmission guide rod auxiliary correction coefficient, and C is the actual transmission guide rod auxiliary correction coefficient, then:

[0032] When C1>C, the transmission guide rod is in the first correction mode;

[0033] When C1<C, the transmission guide rod is in the second correction mode.

[0034] Furthermore, if the transmission guide rod is in the first correction mode, the auxiliary correction coefficient C of the transmission guide rod is: C=

[0035] Among them, P is the moment of inertia of the forward transmission guide rod, and s is the angular velocity of the ring body.

[0036] If the transmission guide rod is in the second correction mode, the auxiliary correction coefficient C of the transmission guide rod is: C=1-

[0037] Wherein, R is the moment of inertia of the reverse transmission guide rod.

[0038] The beneficial effects of the present invention are as follows: the present invention is not affected by the battery core, the extrusion shape of the softened plastic and the amount of extruded plastic. When continuously producing different batches of cables, the machine always keeps running, meets the product's technical requirements for concentricity, and improves the cable production efficiency. Secondly, during production, the concentricity control module is always accurately adjusted according to the cable concentricity technical standards to ensure that the concentricity indicators of different batches of cables meet the design standards and ensure product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0040] Figure 2 is a structural schematic diagram of the concentricity control module of the present invention;

[0041] In the figure: 1. fixed seat; 2. linear elastic component; 3. transmission guide rod; 4. outer seat body; 5. outer die head; 7. inner die head; 8. concentricity positioning sensor; 9. concentricity control module; 10. multiple sets of radial macro adjustment rod motors; 11. multiple sets of radial macro adjustment rods; 12. ring body; 13. inner mold guide core wire concentricity position sensor; 14. outer hemispherical head inner mold seat; 15. tail hemispherical head; 16. outer mold guide plastic concentricity position sensor; 17. power supply; 18. emergency stop switch. DETAILED DESCRIPTION

[0042] 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.

[0043] See also Figure 1-2 In this implementation scheme:

[0044] An eccentric adjustment device for a cable extruder comprises a fixed seat 1, which comprises an outer seat body 4 and a ball head placement cavity with a concave front end; an outer hemispherical head inner mold seat 14, which comprises a tail hemispherical head 15 and a front convex guide structure, the tail hemispherical head 15 is also provided with a rear convex transmission guide rod 3, an outer die head 5 is arranged outside the tail hemispherical head 15, the center of the transmission guide rod 3 is a through hole, the through hole penetrates the radial center of the tail hemispherical head 15 and the front convex guide structure from back to front, one end of the fixed seat 1 is fixedly connected to the transmission guide rod 3, and a linear elastic component 2 is sleeved inside the transmission guide rod 3;

[0045] The inner die head 7 includes a forward convex guide protrusion and a rear end mounting seat; an eccentric adjustment ring includes a ring body 12;

[0046] A plurality of radial macro adjustment rods 11 for adjusting the ring body 12 for macro adjustment, the two ends of the plurality of radial macro adjustment rods 11 are respectively fixedly connected to the ring body 12 and one end of the plurality of radial macro adjustment rod motors 10 for cooperatively adjusting the plurality of radial macro adjustment rods 11 for circular motion of the ring body 12, and the other end thereof is electrically connected to a concentricity control module 9 for accurately correcting the concentricity offset of the cable for the plastic particles of different shapes and the extrusion amount; a plurality of inner mold guide core wire concentricity position sensors 13 for monitoring the concentricity position of the cable when the plastic particles are extruded are arranged in the tail hemispherical head 15, one end of the plurality of inner mold guide core wire concentricity position sensors 13 is embedded in the tail hemispherical head 15, and the other end is electrically connected to the concentricity control module 9; a power supply 17 for providing electric energy to the concentricity control module 9, one end of the power supply 17 is electrically connected to the concentricity control module 9, and the other end is electrically connected to the emergency stop switch 18, and the concentricity control module 9 is fixedly connected to one side of the fixing seat 1;

[0047] The outer die head 5 is provided with a plurality of sets of outer die guide plastic concentricity position sensors 16 for monitoring the concentricity of the outer die. One end of the plurality of sets of outer die guide plastic concentricity position sensors 16 is embedded in the outer die head 5, and the other end is electrically connected to the concentricity control module 9;

[0048] The concentricity positioning sensor 8 is used to monitor the extrusion shape, extrusion amount and initial concentricity position of the soft plastic particles when the battery cells are joined. One end of the concentricity positioning sensor 8 is embedded in the transmission guide rod 3, and the other end is electrically connected to the concentricity control module 9.

[0049] Specifically, the present invention improves the autonomous control capability of the device, improves the cable production efficiency and cable production capacity, and ensures that cables of different technical specifications can be continuously produced in batches while still maintaining the concentricity of high-precision technical specifications through the coordinated control of the concentricity positioning sensor 8, the outer mold guiding plastic concentricity position sensor 16, the inner mold guiding core wire concentricity position sensor 13, multiple groups of radial micro-pitch adjustment rod motors 10 and the concentricity control module 9; the present invention satisfies the requirement that plastic particles of different shapes remain consistent with the concentricity of the battery core after extrusion, thereby avoiding the concentricity adjustment error caused by human adjustment.

[0050] Preferably, the power supply 17 includes but is not limited to power supply equipment in the form of a mobile power supply and an industrial power supply.

[0051] Specifically, the use of multiple power supplies 17 is helpful for the device to adapt to more working environments and improve the working stability of the device.

[0052] In a preferred embodiment, the plurality of radial macro adjustment rods 11 are made of an alloy material that is resistant to torsion and not prone to deformation.

[0053] Specifically, the alloy material facilitates the simultaneous comprehensive adjustment of multiple sets of radial macro adjustment rods 11 during operation, and prevents the multiple sets of radial macro adjustment rods 11 from breaking or the equipment from failing to work properly due to factors such as stress and metal fatigue resistance.

[0054] In a preferred embodiment, the plurality of radial macro adjustment rods 11 and the ring body 12 are movably fixedly connected, and the plurality of radial macro adjustment rods 11 and the output ends of the plurality of radial macro adjustment rod motors 10 are spirally fixedly connected.

[0055] Specifically, the use of a spiral fixed connection is beneficial to shortening the maintenance times of multiple sets of radial macro adjustment rod motors 10 and multiple sets of radial macro adjustment rods 11; the use of multiple sets of radial macro adjustment rods 11 and the ring body 12 using an active fixed connection can ensure that the adjustment of the ring body 12 is not affected by the comprehensive torque and does not cause the multiple sets of radial macro adjustment rods 11 to break.

[0056] Specifically, the concentricity control module 9 controls multiple groups of radial macro adjustment rod motors 10 to drive multiple groups of radial macro adjustment rods 11 to perform comprehensive automatic fine-tuning control on the ring body 12, wherein the concentricity control module 9 performs comprehensive correction coefficient Q on the rotation speed of multiple groups of radial macro adjustment rod motors 10 to achieve circumferential angular velocity adjustment of the ring body 12, wherein,

[0057] If Q1 is the preset comprehensive correction coefficient of the speed of the motor 10 of the multiple sets of radial macro adjustment rods, and Q is the actual comprehensive correction coefficient of the speed of the motor 10 of the multiple sets of radial macro adjustment rods, then:

[0058] When Q1>Q, the multiple radial macro adjustment rod motors 10 are in the first correction mode;

[0059] When Q1<Q, the multiple radial macro adjustment rod motors 10 are in the second correction mode.

[0060] Specifically, when an irregular concentricity offset occurs when the battery cell is wrapped with plastic, the working conditions of the multiple sets of radial macro-adjustment rod motors 10 determine the first and / or second correction methods, and the concentricity control module 9 adjusts the multiple sets of radial macro-adjustment rod motors 10 in combination with the comprehensive correction coefficient to achieve comprehensive correction of the ring body 12 to meet the technical requirements for concentricity of the cable.

[0061] Specifically, if the multiple sets of radial macro adjustment rod motors 10 are in the first correction mode, the comprehensive correction coefficient Q of the speed of the multiple sets of radial macro adjustment rod motors 10 is: Q=1-

[0062] in, is the maximum forward or reverse rotation angle of the multiple sets of radial macro adjustment rod motors 10, and i is the corrected angular velocity of the ring body 12.

[0063] If the multiple radial macro adjustment rod motors 10 are in the second correction mode, the comprehensive correction coefficient Q of the speed of the multiple radial macro adjustment rod motors 10 is: Q=1+

[0064] in, is the maximum forward or reverse rotation angle of the multiple sets of radial macro adjustment rod motors 10, and i is the corrected angular velocity of the ring body 12.

[0065] Specifically, according to the correction of the first correction method and / or the second correction method, multiple sets of radial macro adjustment rod motors 10 are used to adjust the comprehensive correction coefficient to solve the problem that the longer the cable wrapping length, the more likely the cable concentricity will be offset.

[0066] Specifically, the concentricity control module 9 makes corrections according to the changes in the core diameter, the extrusion shape of the plastic particles and the extrusion amount on the concentricity, and the multiple groups of radial micro-adjustment rod motors 10 make comprehensive adjustments to the ring body 12, and the ring body 12 adjusts the eccentricity of the inner and outer mold production guide concentricity of the front convex guide mechanism in the transmission guide rod 3. Therefore, the concentricity control module 9 makes corrections according to the correction coefficient O of the eccentricity of the inner and outer mold production guide concentricity;

[0067] If O1 is the preset comprehensive correction coefficient of the speed of the motor 10 of the multiple sets of radial macro adjustment rods, and O is the actual comprehensive correction coefficient of the speed of the motor 10 of the multiple sets of radial macro adjustment rods, then:

[0068] When O1>O, the multiple radial macro adjustment rod motors 10 are in the first correction mode;

[0069] When O1<O, the multiple radial macro adjustment rod motors 10 are in the second correction mode.

[0070] Specifically, the concentricity control module 9 determines the first correction mode and / or the second correction mode for multiple groups of radial micro-pitch adjustment rod motors 10 according to the correction coefficients of the concentricity eccentricity guided by the inner and outer mold production, which is beneficial for the concentricity control module 9 to ensure the concentricity technical specifications according to the changes in the core diameter, the extrusion shape of the plastic particles and the changes in the extrusion amount, thereby improving the cable quality.

[0071] Specifically, if the multiple sets of radial macro adjustment rod motors 10 are in the first correction mode, the comprehensive correction coefficient O of the speed of the multiple sets of radial macro adjustment rod motors 10 is: O=

[0072] in, is the concentricity offset, It is the rotational inertia of multiple groups of radial macro adjustment rods 11.

[0073] If the multiple radial macro adjustment rod motors 10 are in the second correction mode, the comprehensive correction coefficient O of the speed of the multiple radial macro adjustment rod motors 10 is: O=

[0074] in, is the rotational inertia of the guide transmission rod, R is the original rotation angle, and r is the rotational inertia.

[0075] Specifically, according to the first correction method and / or the second correction method of multiple sets of radial macro adjustment rod motors 10, it is beneficial for the concentricity control module 9 to perform targeted comprehensive adjustments, and the ring body 12 solves the problem of cable concentricity being affected by the inner mold mechanism and the outer mold mechanism when the battery core is wrapped with plastic.

[0076] Specifically, the concentricity control module 9 controls the multiple sets of radial micro-adjustment rod motors 10 to drive the transmission guide rod 3 to perform auxiliary correction according to the rotation deviation of the transmission guide rod 3 when the plastic particles are extruded and fused with the battery core. Therefore, the concentricity control module 9 controls the multiple sets of radial micro-adjustment rod motors 10 to integrate the adjustment ring body 12 to drive the transmission guide rod 3 to perform auxiliary correction, and the auxiliary correction coefficient C of the transmission guide rod 3 is;

[0077] If C1 is the preset auxiliary correction coefficient of the transmission guide rod 3, and C is the auxiliary correction coefficient of the actual transmission guide rod 3, then:

[0078] When C1>C, the transmission guide rod 3 is in the first correction mode;

[0079] When C1<C, the transmission guide rod 3 is in the second correction mode.

[0080] Specifically, if the initial concentricity of the transmission guide rod 3 is offset, the center positioning of the battery cell will be offset. During the production process, the battery cell and the wrapped soft plastic will be offset at the same time, and the quality of the cable will be reduced. By auxiliary correction of the transmission guide rod 3, the initial concentricity of the battery cell and plastic can be secondary corrected to improve the cable quality.

[0081] Specifically, if the transmission guide rod 3 is in the first correction mode, the auxiliary correction coefficient C of the transmission guide rod 3 is: C=

[0082] Wherein, P is the rotational inertia of the forward transmission guide rod 3, and s is the rotational angular velocity of the ring body 12.

[0083] If the transmission guide rod 3 is in the second correction mode, the auxiliary correction coefficient C of the transmission guide rod 3 is: C=1-

[0084] Wherein, R is the rotational inertia of the reverse transmission guide rod 3.

[0085] Specifically, according to the first correction method and / or the second correction method of the transmission guide rod 3, the concentricity control module 9 selects the first correction method and / or the second correction method to ensure that the auxiliary correction effect of the transmission guide rod 3 is good; it is beneficial for the transmission guide rod 3 to quickly realize axial comprehensive correction and realize initial concentricity correction, which helps the device to quickly enter the production mode.

[0086] The working principle and use process of the present invention:

[0087] 1. Pre-production preparation stage:

[0088] 1. Add qualified plastic granule raw materials into the hopper of the extruder, and the raw materials enter the barrel under the action of gravity or feeding screw.

[0089] 2. A heating device is installed outside the barrel. After the raw material enters the barrel, it is gradually heated from the feeding section to reach the softening temperature.

[0090] 3. The screw in the barrel rotates continuously, generating shear stress and breaking the softened plastic particles, achieving uniform mixing of the raw materials and performing preliminary heat exchange.

[0091] 2. Production process stage:

[0092] 1. As the material moves toward the die head, in the melting section, the plastic is subjected to the higher temperature and the frictional heat of the screw rotation, causing a physical state change from a solid state to a viscous flow state.

[0093] 2. The battery cell enters the state of waiting for plastic wrapping along with the transmission guide rod 3, and the concentricity positioning sensor 8 monitors the initial concentricity signal of the transmission guide rod 3 and transmits it to the concentricity control module 9; the control module controls the multiple groups of radial macro adjustment rod motors 10 to adjust the ring body 12 through the multiple groups of radial macro adjustment rods 11 according to the first correction method of radially adjusting the coordinated concentricity of the transmission guide rod 3 or the second correction method of radially adjusting the coordinated concentricity of the transmission guide rod 3, so as to achieve the purpose of accurate initial concentricity of the transmission guide rod 3.

[0094] 3. The plasticized plastic is pushed toward the machine head under the push of the screw. In this process, the plastic maintains a viscous flow state and has good fluidity. After the plastic flow reaches the machine head, it passes through the annular gap between the mold core and the mold sleeve, and is extruded from the mold sleeve mouth into viscous plastic particles of a specific shape, and is wrapped with the battery cell in the transmission guide rod 3 through the outer mold guiding plastic concentricity position sensor 16 and the inner mold guiding core wire concentricity position sensor 13; the monitoring signals of the outer mold guiding plastic concentricity position sensor 16 and the inner mold guiding core wire concentricity position sensor 13 are transmitted to the concentricity control module 9, and the concentricity control module 9 makes corrections according to the first correction method of the inner and outer mold guiding concentricity offset or / and the concentricity control module 9 makes corrections according to the second correction method of the inner and outer mold guiding concentricity offset; the concentricity of the battery cell and the plastic during the wrapping process is ensured to be consistent.

[0095] 4. When the concentricity control module 9 controls the plurality of radial micro-pitch adjustment rod motors 10 to perform the first correction method or the second correction method, the cable guide motor speed is stable and each cable guide motor satisfies the first and / or second correction method comprehensive correction at the same time.

[0096] 3. End of production stage:

[0097] 1. The extruded cable immediately enters the cooling system, such as a cooling water tank or cooling pipe, and the extruded layer is quickly cooled by cooling media such as water or air, changing from an amorphous plastic state to a fixed solid state, thereby fixing the shape and size of the cable to make the final wire and cable product.

[0098] 2. During the extrusion process, traction devices such as crawler tractors will pull the cable at a certain speed, so that the cable can be extruded continuously and stably, and the extrusion speed and tension are controlled to ensure the dimensional accuracy and quality stability of the cable.

[0099] 3. Finally, the pulled cable is reeled onto the reel by the cable take-up machine, where it is rolled and stored in categories for subsequent processing, use or sale.

[0100] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An eccentric adjustment device for a cable extruder, comprising: a fixed seat (1), which comprises an outer seat body (4), and a ball head placement cavity with a concave front end; an outer hemispherical head inner mold seat (14), which comprises a tail hemispherical head (15) and a front convex guide structure, wherein the tail hemispherical head (15) is also provided with a rear convex transmission guide rod (3), and an outer mold head (5) is provided outside the tail hemispherical head (15), the center of the transmission guide rod (3) is a through hole, and the through hole penetrates the radial center of the tail hemispherical head (15) and the front convex guide structure from back to front, one end of the fixed seat (1) is fixedly connected to the transmission guide rod (3), and a linear elastic component (2) is sleeved inside the transmission guide rod (3); The inner die head (7) comprises a guide protrusion with a forward protrusion and a rear end mounting seat; the eccentric adjustment ring comprises a ring body (12), characterized in that: A plurality of radial macro-adjustment rods (11) for adjusting the ring body (12) for macro-adjustment, wherein two ends of the plurality of radial macro-adjustment rods (11) are respectively fixedly connected to the ring body (12) and one end of a plurality of radial macro-adjustment rod motor (10) of the ring body (12) for cooperatively adjusting the plurality of radial macro-adjustment rods (11) for circular motion, and the other end is electrically connected to a concentricity control module (9) for accurately correcting plastic particles and / or satisfying extrusion shape correction control of cable concentricity deviation; The tail hemispherical head (15) is provided with a plurality of groups of inner mold guide core wire concentricity position sensors (13) for monitoring the concentricity position of the cable when extruding plastic particles, one end of the plurality of groups of inner mold guide core wire concentricity position sensors (13) being embedded in the tail hemispherical head (15) and the other end being electrically connected to the concentricity control module (9); a power supply (17) for providing electric energy to the concentricity control module (9), one end of the power supply (17) being electrically connected to the concentricity control module (9) and the other end being electrically connected to the emergency stop switch (18); the concentricity control module (9) being fixedly connected to one side of the fixing seat (1); An outer mold guiding plastic concentricity position sensor (16) for monitoring the concentricity of the outer mold is arranged inside the outer mold head (5); one end of a plurality of groups of the outer mold guiding plastic concentricity position sensors (16) is embedded in the outer mold head (5), and the other end is electrically connected to the concentricity control module (9); A concentricity positioning sensor (8) for monitoring the initial concentricity position during plastic particle extrusion and battery core joining, wherein one end of the concentricity positioning sensor (8) is embedded in the transmission guide rod (3) and the other end is electrically connected to the concentricity control module (9).

2. The eccentricity adjustment device for a cable extruder according to claim 1, characterized in that: The concentricity control module (9) controls the multiple groups of radial micro-pitch adjustment rod motors (10) to drive the multiple groups of radial micro-pitch adjustment rods (11) to perform comprehensive automatic fine-tuning control on the ring body (12), wherein the concentricity control module (9) performs a comprehensive correction coefficient Q on the rotation speed of the multiple groups of radial micro-pitch adjustment rod motors (10) to achieve circumferential angular velocity adjustment of the ring body (12).

3. The eccentricity adjustment device for a cable extruder according to claim 2, characterized in that: If Q1 is the preset integrated correction coefficient of the rotation speed of the multiple sets of radial micro-pitch adjustment rod motors (10), and Q is the actual integrated correction coefficient of the rotation speed of the multiple sets of radial micro-pitch adjustment rod motors (10), then: When Q1>Q, the multiple sets of radial macro adjustment rod motors (10) are in the first correction mode; When Q1<Q, the multiple sets of radial macro adjustment rod motors (10) are in the second correction mode.

4. The eccentricity adjustment device for a cable extruder according to claim 3, characterized in that: If the plurality of radial macro adjustment rod motors (10) are in the first correction mode, the rotation speed comprehensive correction coefficient Q of the plurality of radial macro adjustment rod motors (10) is: Q=1- in, is the maximum forward or reverse rotation angle of the multiple sets of radial macro adjustment rod motors (10), and i is the corrected angular velocity of the ring body (12); If the plurality of radial macro adjustment rod motors (10) are in the second correction mode, the rotation speed comprehensive correction coefficient Q of the plurality of radial macro adjustment rod motors (10) is: Q=1+ in, is the maximum forward or reverse rotation angle of the multiple groups of radial macro adjustment rod motors (10), and i is the corrected angular velocity of the ring body (12).

5. The eccentricity adjustment device for a cable extruder according to claim 1, characterized in that: The concentricity control module (9) corrects the influence of the concentricity of the two according to the changes of the battery core diameter, the extrusion shape of the plastic particles and the extrusion amount. The multiple groups of radial micro-pitch adjustment rod motors (10) comprehensively adjust the ring body (12), and the ring body (12) adjusts the eccentricity of the inner and outer mold production guide concentricity of the front convex guide mechanism in the transmission guide rod (3).

6. The eccentricity adjustment device for a cable extruder according to claim 5, characterized in that: The concentricity control module (9) is corrected according to the correction coefficient O of the concentricity eccentricity of the inner and outer mold production guides; If O1 is a preset integrated correction coefficient of the rotation speed of the multiple sets of radial micro-pitch adjustment rod motors (10), and O is an actual integrated correction coefficient of the rotation speed of the multiple sets of radial micro-pitch adjustment rod motors (10), then: When O1>O, the multiple sets of radial macro adjustment rod motors (10) are in the first correction mode; When O1<O, the multiple sets of radial macro adjustment rod motors (10) are in the second correction mode.

7. The eccentricity adjustment device for a cable extruder according to claim 6, characterized in that: If the plurality of radial macro adjustment rod motors (10) are in the first correction mode, the rotation speed comprehensive correction coefficient O of the plurality of radial macro adjustment rod motors (10) is: O= in, is the concentricity offset, is the rotational inertia of multiple groups of radial macro adjustment rods (11); If the plurality of radial macro adjustment rod motors (10) are in the second correction mode, the rotation speed comprehensive correction coefficient O of the plurality of radial macro adjustment rod motors (10) is: O= in, is the rotational inertia of the guide transmission rod, R is the original rotation angle, and r is the rotational inertia.

8. The eccentricity adjustment device for a cable extruder according to claim 1, characterized in that: The concentricity control module (9) controls the plurality of radial micro-adjustment rod motors (10) to comprehensively adjust the ring body (12) to drive the transmission guide rod (3) for auxiliary correction, based on the rotational deviation of the transmission guide rod (3) when the softened plastic particles are extruded and fused with the battery core; the auxiliary correction coefficient C of the transmission guide rod (3) is then adjusted.

9. The eccentricity adjustment device for a cable extruder according to claim 8, characterized in that: If C1 is the auxiliary correction coefficient of the preset transmission guide rod (3), and C is the auxiliary correction coefficient of the actual transmission guide rod (3), then: When C1>C, the transmission guide rod (3) is in the first correction mode; When C1<C, the transmission guide rod (3) is in the second correction mode.

10. The eccentricity adjustment device for a cable extruder according to claim 9, characterized in that: If the transmission guide rod (3) is in the first correction mode, the auxiliary correction coefficient C of the transmission guide rod (3) is: C= Wherein, P is the moment of inertia of the forward transmission guide rod (3), and s is the angular velocity of rotation of the ring body (12); If the transmission guide rod (3) is in the second correction mode, the auxiliary correction coefficient C of the transmission guide rod (3) is: C=1- Wherein, R is the rotational inertia of the reverse transmission guide rod (3).

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