Multi-core cable extrusion molding die, production equipment and production method

Abstract

The application discloses a multi-core cable extrusion forming die, a production device and a production method, and belongs to the technical field of plastic forming. The multi-core cable extrusion forming die comprises a melting component, a plurality of melting units, a melting groove and a spiral conveyor, a bottom of the melting groove is provided with a discharge port, an extrusion component is provided with a plurality of extrusion structures, the extrusion structure comprises a first extrusion channel, an annular groove and an intermediate channel, a melting component sealing cover is arranged on the upper side of all annular grooves, a plurality of feed ports are connected to the plurality of annular grooves one by one, the melting component and the extrusion component are arranged in opposite rotation, and the first extrusion channel penetrates through the extrusion component in the vertical direction. The extrusion forming of the plurality of single-core electric cores and the process of twisting the plurality of single-core electric cores into a cable can be continuously carried out, which is beneficial to the improvement of production efficiency. The production device comprises the multi-core cable extrusion forming die, and the production method uses the production device to produce the multi-core cable.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plastic forming, in particular to a multi-core cable extrusion forming die, production equipment and a production method. BACKGROUND

[0002] At present, the production of multi-core cables requires the preparation of multiple single-core wires, the twisting of the multiple single-core wires into a multi-core cable, and the coating of an outer insulation layer. The single-core wires are generally prepared by extrusion forming of insulation material on copper wires. During the preparation process, the single-core wires can only be fed along the axial direction and cannot be translated along the radial direction. However, the twisting requires the translation of the single-core wires along the radial direction. Therefore, the single-core wires need to be wound and placed in a twisting device, and then unwound by the twisting device to form a cable with a multi-core structure. This makes it impossible to continuously extrude and twist, which is not conducive to improving the production efficiency. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a multi-core cable extrusion forming die, production equipment and a production method.

[0004] According to the multi-core cable extrusion forming die of the first aspect of the present application, the multi-core cable extrusion forming die comprises:

[0005] a melting component provided with a plurality of melting units, each of the melting units comprising a vertically extending melting groove and a spiral conveyor arranged in the melting groove, the top of the melting groove being provided with an inlet, and the bottom of the melting groove being provided with an outlet;

[0006] an extrusion component provided with a plurality of extrusion structures, each of the extrusion structures comprising a first extrusion channel, a ring-shaped groove and an intermediate channel connected between the first extrusion channel and the ring-shaped groove, all the ring-shaped grooves being coaxial and arranged on the top surface of the extrusion component, the melting component being arranged on the upper side of all the ring-shaped grooves, each of the inlets being connected to one of the ring-shaped grooves, the melting component being arranged in opposite rotation with the extrusion component, and the axis of rotation being coaxial with the ring-shaped grooves, the first extrusion channel being arranged outside the melting component and vertically penetrating the extrusion component;

[0007] a support frame, the melting component being arranged in opposite rotation with the support frame, the extrusion component being rotatably arranged on the support frame, and the support frame being provided with a driving device for driving the rotation of the extrusion component.

[0008] According to the multi-core cable extrusion forming die of the first aspect of the present application, the following technical effects are achieved: the wire releasing device is arranged at the corresponding first extrusion channel of the extrusion part to make the copper wires pass through the first extrusion channels one by one, and the granules are added to the melting grooves, the granules are melted by the heating melting part, and the spiral conveyors are started, so that the inner insulation layer is formed on the copper wires to produce the single-core electric wire; the materials in the melting grooves flow to the corresponding first extrusion channels one by one when the extrusion part rotates relative to the melting part, so that the single-core electric wires are twisted into the cable when the extrusion part is driven to rotate, and the melting part is fixed to facilitate the addition of the granules, so that the extrusion and twisting are continuously performed, and the production efficiency is improved.

[0009] According to some embodiments of the present application, the melting part is cylindrical and coaxial with the annular grooves, and the melting units are arranged along the circumference of the melting part.

[0010] According to some embodiments of the present application, the extrusion part is provided with a first recess, the bottom of the melting part is arranged in the first recess, and the first extrusion channel is arranged outside the first recess.

[0011] According to some embodiments of the present application, the bottom surface of the melting part and the extrusion part are provided with a plurality of sealing washers, and any one of the annular grooves is arranged between two of the sealing washers.

[0012] According to some embodiments of the present application, the feeding port is arranged on the outer circumferential surface of the melting part, and the rotating shafts of the spiral conveyors penetrate the top wall of the melting groove; the top of the melting part is provided with a rotating driver, and the rotating shafts of all the spiral conveyors are connected to the rotating driver.

[0013] According to the production equipment of the second aspect of the present application, the following technical effects are achieved: the multi-core cable extrusion forming die is arranged, and the extrusion and twisting of the single-core electric wires and the twisting of the single-core electric wires into the cable are continuously performed, so that the production efficiency is improved.

[0014] According to the production equipment of the second aspect of the present application, the following technical effects are achieved: the multi-core cable extrusion forming die is arranged, and the extrusion and twisting of the single-core electric wires and the twisting of the single-core electric wires into the cable are continuously performed, so that the production efficiency is improved.

[0015] According to some embodiments of the present application, the cooling device comprises a box wrapped outside the gathering channel and a circulating channel arranged beside the box, both ends of the circulating channel are communicated with the box, and the circulating channel is provided with a cooler and a flow-promoting fan.

[0016] According to some embodiments of the present application, the cooling device comprises a box wrapped outside the gathering channel and a circulating channel arranged beside the box, both ends of the circulating channel are communicated with the box, and the circulating channel is provided with a cooler and a flow-promoting fan.

[0017] According to some embodiments of the present application, the circulating channel is provided with a powder inlet arranged on the upstream side of the flow-promoting fan.

[0018] The production method according to the third aspect of the present application uses the production equipment described above to produce the multi-core cable, and the production method comprises:

[0019] The plurality of copper wire coils are placed one by one in the plurality of wire unwinding devices, so that the copper wire unwound from each copper wire coil passes through the first extrusion channel, the gathering channel and the second extrusion channel in sequence and is connected to the wire winding device.

[0020] The granules are placed into the plurality of melting grooves, and the melting part is heated to melt the granules into molten material;

[0021] The plurality of screw conveyors, the plurality of wire unwinding devices, the driving device, the cooling device, the second extrusion device and the wire winding device are controlled to start, so that the molten material in the plurality of melting grooves is covered on the plurality of copper wires one by one to form the plurality of single-core wires, the plurality of single-core wires are cooled, the plurality of single-core wires are twisted into a cable, and the cable is extruded by the second extrusion device to form the multi-core cable.

[0022] The production method according to the third aspect of the present application has at least the following technical effects: when the production equipment described above is used to produce the multi-core cable, the extrusion molding of each single-core wire, the twisting of the plurality of single-core wires into a cable and the extrusion molding of the outer insulation layer of the multi-core cable can be continuously performed, which is beneficial to improve the production efficiency.

[0023] Additional aspects and advantages of the present application will be given in part in the following description, will become apparent from the following description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0024] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description, taken in conjunction with the following drawings of which:

[0025] Figure 1 is a top structure schematic view of a production equipment of an embodiment of the present application;

[0026] Figure 2 is a rotating sectional view schematic view of Figure 1 ;

[0027] Figure 3 is an exploded structure schematic view of Figure 2 ;

[0028] Figure 4 is a top sectional view schematic view of a melting component in Figure 3 ;

[0029] Figure 5 is a top structure schematic view of a melting component in Figure 3 ;

[0030] Figure 6 is a top structure schematic view of a box in Figure 3 ;

[0031] In the drawings:

[0032] 100 - support frame; 200 - second extruding device; 300 - box; 310 - circulating channel; 311 - cooler; 312 - flow-promoting fan; 313 - powder inlet; 320 - connecting shaft; 321 - guide wheel; 322 - guide; 323 - first notch; 400 - planar bearing; 500 - extruding component; 501 - first extruding channel; 502 - intermediate channel; 503 - annular groove; 510 - driving device; 513 - third gear; 520 - unwinding device; 530 - avoiding hole; 600 - sealing washer; 700 - melting component; 710 - screw conveyor; 711 - melting groove; 720 - feeding port; 730 - rotary driver; 731 - first gear; 732 - second gear; 740 - discharging port. DETAILED DESCRIPTION

[0033] Embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar reference numerals throughout the drawings denote the same or similar elements or elements having the same or similar functions. The embodiments described below by reference to the drawings are exemplary only, for the purpose of explanation, and are not to be understood as a limitation of the present application.

[0034] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by the upper, lower, front, rear, left, right and the like, is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, if several meanings are one or more, the meaning of multiple is two or more, greater than, less than, more than, etc. are understood as not including the number, above, below, within, etc. are understood as including the number. If it is described as first, second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of indicated technical features.

[0035] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting and the like should be broadly understood, and those skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.

[0036] The following refers to Figures 1 to 6 The multi-core cable extrusion molding die, production equipment and production method according to the embodiments of the present application are described.

[0037] The multi-core cable extrusion molding die of the first aspect embodiment of the present application comprises a melting component 700, an extrusion component 500 and a support frame 100.

[0038] The melting component 700 is provided with a plurality of melting units, and each melting unit comprises a vertically extending melting groove 711 and a screw conveyor 710 arranged in the melting groove 711. The axial direction of the screw conveyor 710 is vertical, and the top of the melting groove 711 is provided with a feeding port 720 for adding granular plastic. The bottom of the melting groove 711 is provided with a discharging port 740. The melting component 700 can be a metal material component, and the melting component 700 is provided with a plurality of electric heating rods. When the electric heating rods are started, the melting component 700 can be heated to heat the plastic in the melting groove 711, so that the granular plastic is melted into molten plastic. Then the screw conveyor 710 is driven to rotate, so that the molten plastic is pressurized and discharged from the discharging port 740.

[0039] The extrusion component 500 is provided with a plurality of extrusion structures, which will be described with reference to Figure 4, the extrusion structure includes annular grooves 503, a first extrusion channel 501, and an intermediate channel 502 communicating between the annular grooves 503 and the first extrusion channel 501, all the annular grooves 503 are coaxial and are arranged on the top surface of the extrusion part 500, and the plurality of extrusion structures are not communicated with each other; the melting part 700 is arranged on the upper side of all the annular grooves 503, a plurality of feed ports 720 are communicated with the plurality of annular grooves 503 one by one, the extrusion part 500 is arranged in opposite rotation with the melting part 700, and the axis of opposite rotation is coaxial with the annular grooves 503, the axis of opposite rotation between the melting part 700 and the extrusion part 500 is called the first axis, the first axis is arranged vertically, and the distances between the discharge ports 740 of the plurality of melting units and the first axis are inconsistent, so that when the melting part 700 rotates relative to the extrusion part 500, the moving tracks of the discharge ports 740 of each melting unit are all annular and do not intersect with each other, and the discharge ports 740 of each melting unit can keep communicated with the corresponding annular grooves 503;

[0040] The first extrusion channel 501 is arranged on the outside of the melting part 700 and vertically penetrates the extrusion part 500, the intermediate channel 502 is arranged below all the annular grooves 503, the intermediate channel 502 extends in a direction perpendicular to the first axis, one end of the intermediate channel 502 away from the first axis is communicated with the corresponding first extrusion channel 501, and one end of the intermediate channel 502 close to the first axis is communicated with the corresponding annular groove 503.

[0041] Among them, the number of melting units and extrusion structures can be three, so as to manufacture the three-core cable widely used in the market. By arranging the plurality of extrusion structures not to be communicated with each other, the plurality of single-core electric cores extruded and formed can be different colors to be distinguished, for example, the three single-core electric cores of the three-core cable are made into yellow, green and red.

[0042] The support frame 100 is arranged on the ground of the factory building, the support frame 100 is arranged in opposite fixation with the melting part 700, the melting part 700 can be arranged with a connecting frame to be fixedly connected to the support frame 100, or can be fixedly connected to the cross beam or support column of the factory building through the connecting frame;

[0043] The extrusion part 500 is rotatably arranged on the support frame 100, and the rotatable connection between the extrusion part 500 and the support frame 100 can be achieved by arranging a flat bearing 400 on the bottom of the extrusion part 500, supporting the support frame 100 on the lower side of the flat bearing 400, and arranging an avoiding hole 530 on the flat bearing 400 and the support frame 100 corresponding to the center of the extrusion part 500, and arranging the moving track of the first extrusion channel 501 in the avoiding hole 530, so that the flat bearing 400 and the support frame 100 do not hinder the first extrusion channel 501 from sending out single-core batteries; the support frame 100 is provided with a driving device 510 for driving the rotation of the extrusion part 500, and the driving device 510 comprises a second motor, a third gear 513 and a fourth gear, the main body of the second motor is fixedly arranged on the support frame 100, the driving shaft of the second motor is provided with the third gear 513, the outer periphery of the extrusion part 500 is provided with the fourth gear, and the third gear 513 is engaged with the fourth gear, so that the second motor can drive the rotation of the extrusion part 500.

[0044] In use, the pay-off device 520 for paying off copper wires can be arranged at each first extrusion channel 501 of the extrusion part 500, so that a plurality of copper wires are correspondingly arranged through a plurality of first extrusion channels 501, at the same time, the granules are added to each melting groove 711, the heating and melting part 700 is started to melt the granules and start each spiral conveyor 710, and the copper wires pass through the first extrusion channel 501 to form an inner insulation layer covering the copper wires, so as to manufacture single-core batteries; by arranging a plurality of annular grooves 503, when the extrusion part 500 rotates relative to the melting part 700, the materials in each melting groove 711 can still flow to the corresponding first extrusion channel 501 one by one, so that the plurality of single-core batteries can be twisted into a cable by driving the rotation of the extrusion part 500 in use, and the melting part 700 can be kept fixed to facilitate the addition of granules, so as to achieve the purpose of continuous extrusion and twisting, and improve the production efficiency.

[0045] In some embodiments of the present application, referring to Figure 3 , the melting part 700 is in a cylindrical shape and coaxial with the annular groove 503, and a plurality of melting units are arranged along the circumference of the melting part 700 in sequence. In this way, the structure of the melting part 700 is reasonable and compact, and the sealing between the melting part 700 and the extrusion part 500 is facilitated.

[0046] In some embodiments of the present application, the extrusion part 500 is provided with a first recess concave downward, and the bottom of the melting part 700 is arranged in the first recess, and the first extrusion channel 501 is arranged outside the first recess.

[0047] In this way, the groove wall of the first recess can limit the transverse movement of the melting part 700, prevent the relative transverse deviation between the extrusion part 500 and the melting part 700, and make the relative rotation between the extrusion part 500 and the melting part 700 more accurate.

[0048] In some embodiments of the present application, a plurality of sealing washers 600 are arranged between the bottom surface of the melting component 700 and the extrusion component 500, and any one annular groove 503 is arranged between two of the sealing washers 600. Taking the number of the melting units and the extrusion structures as three as an example, the number of the sealing washers 600 is four, and the plurality of sealing washers 600 and the plurality of annular grooves 503 are alternately and spacedly sleeved along the radial direction of the first axis, so that the molten materials in different melting grooves 711 can be prevented from mixing with each other.

[0049] In some embodiments of the present application, the feeding port 720 is arranged on the outer circumferential surface of the melting component 700, and the rotating shafts of the plurality of screw conveyors 710 penetrate the top wall of the melting groove 711; the top of the melting component 700 is provided with a rotary driver 730, and the rotating shafts of all the screw conveyors 710 are connected with the rotary driver 730 in linkage. The rotary driver 730 comprises a first motor, the main body of the first motor is fixedly connected with the melting component 700, the output shaft of the first motor is provided with a first gear 731, and the rotating shaft of each screw conveyor 710 is provided with a second gear 732, and each second gear 732 is engaged with the first gear 731; one first motor can drive a plurality of screw conveyors 710, and the structure is simple and convenient for simultaneously driving a plurality of screw conveyors 710; by arranging the feeding port 720 on the outer circumferential surface of the melting component 700, the operation of feeding the granules into the feeding port 720 will not be hindered by the rotary driver 730, and it is convenient to supplement the granules into the melting groove 711.

[0050] The production equipment of the second aspect of the present application comprises the above-mentioned multi-core cable extrusion molding die and a plurality of wire laying devices 520, the plurality of wire laying devices 520 are arranged on the extrusion component 500, and the details are described above with reference to Figure 1 , the plurality of first extrusion channels 501 are arranged in one-to-one correspondence with the plurality of wire laying devices 520, the wire outlet of the wire laying device 520 is located directly above the corresponding first extrusion channel 501, the wire laying device 520 is used for laying out the copper wire and making the copper wire pass through the corresponding first extrusion channel 501, and the wire laying device 520 can be a copper wire unwinding device. The wire laying device 520 is a conventional device in the field, and its specific structure will not be described here.

[0051] By arranging the above-mentioned multi-core cable extrusion molding die, when used, the granules are added into the plurality of melting grooves 711, the first motor, the second motor and the wire laying device 520 are started to simultaneously coat the inner insulation layer on each copper wire to form a single-core cable, and the plurality of single-core cables are twisted to form a cable; the processes of extrusion molding of the plurality of single-core cables and twisting of the plurality of single-core cables to form a cable can be continuously performed, which is beneficial to improving the production efficiency.

[0052] In some embodiments of the present invention, the production equipment further includes a take-up device, and a take-up channel and a second extrusion channel are sequentially arranged below the extrusion component 500 and between the take-up device. A cooling device is provided outside the take-up channel. Figure 2 A second extrusion device 200 is provided on the outside of the second extrusion channel; a cooling device is used to cool the single-strand battery cores fed from the first extrusion channel 501; the second extrusion device 200 is used to extrude the outer insulation layer of the cable formed by stranding multiple single-strand battery cores; and a take-up device is used to take up the multi-core cable formed after the outer insulation layer is extruded. The second extrusion device 200 and the take-up device are conventional equipment in the art, and their specific structures will not be described in detail here. By setting the second extrusion device 200, the present invention can continue to perform secondary extrusion on the cable after stranding multiple single-strand battery cores to directly complete the production of multi-core cables, which is beneficial to improving production efficiency. The cooling device cools each single-strand battery core before secondary extrusion, preventing the single-strand battery cores from sticking together.

[0053] In some embodiments of the present invention, reference is made to... Figure 3 The cooling device includes a housing 300 wrapped around the outside of the convergence channel and a circulation channel 310 located beside the housing 300. The housing 300 is fixedly connected to the support frame 100 and is located below the clearance hole 530. The two ends of the circulation channel 310 are respectively connected to the housing 300, that is, the housing wall of the housing 300 is provided with two connection ports with a certain distance between them. The two ends of the circulation channel 310 are respectively connected to the two connection ports. A flow-promoting fan 312 and a cooler 311 are installed inside the circulation channel 310. The cooler 311 can be the evaporator of the heat pump system, and the flow-promoting fan 312 can be an axial flow fan. The flow-promoting fan 312 and the cooler 311 are connected in series, so that the air in the housing 300 can circulate in the housing 300 and the circulation channel 310. When the air flows through the circulation channel 310, it is cooled by the cooler 311, so that the air in the housing 300 is kept at a low temperature, achieving the purpose of cooling each individual cell before secondary extrusion.

[0054] In this case, since the multiple single-strand cells delivered from the extrusion unit 500 move radially, the conventional structure of the housing 300 needs to have an opening along the entire moving path of the single-strand cells so that the single-strand cells can smoothly enter the housing 300. This results in the housing 300 having too large a connection area with the outside world, poor heat insulation, and poor cooling effect on the single-strand cells.

[0055] In some embodiments of the present invention, the top wall of the housing 300 is provided as a guide member 322, and the bottom wall of the housing 300 is provided with a cable outlet hole. The guide member 322 is in the shape of a circular plate and is separate from the housing 300. (Refer to...) Figure 6The bottom of the extrusion part 500 is provided with a vertical connecting shaft 320, and a guide 322 is arranged on the connecting shaft 320 so that the guide 322 can rotate with the extrusion part 500. The outer peripheral edge of the guide 322 is provided with a first notch 323 corresponding to the lower side of each first extrusion channel 501. The side of the guide 322 close to the connecting shaft 320 at the first notch 323 is a circular arc surface or is provided with a roller, so that the single-core battery cell can smoothly pass through the first notch 323. The connecting shaft 320 is provided with a plurality of guide wheels 321 below the guide 322. The plurality of guide wheels 321 are arranged in the box body 300 and are arranged one by one corresponding to the plurality of first notches 323. The distance between the first notch 323 and the connecting shaft 320 is greater than the distance between the guide wheel 321 and the connecting shaft 320. The guide wheel 321 is arranged above the first notch 323, so that the single-core battery cell sent out from the first extrusion channel 501 can be folded in sequence through the first notch 323 and the guide wheel 321 and then sent out from the wire outlet. In this way, the area of the opening formed in the box wall of the box body 300 and capable of communicating the inside and outside of the box body 300 is small, the heat transfer between the inside and outside of the box body 300 is reduced, and it is beneficial to keep a low temperature in the box body 300.

[0056] In some embodiments of the present application, the circulating channel 310 is provided with a powder inlet 313 arranged on the upstream side of the flow-promoting fan 312. By arranging the circulating channel 310, the inside of the box body 300 is cooled, the powder inlet 313 can be arranged on the circulating channel 310, and during operation, talcum powder can be added into the box body 300 through the powder inlet 313, further avoiding mutual adhesion between the single-core battery cells. By arranging the powder inlet 313 on the upstream side of the flow-promoting fan 312, the talcum powder can be sucked into the circulating channel 310 by negative pressure.

[0057] The production method of the third aspect embodiment of the present application uses the above-mentioned production equipment to produce a multi-core cable, and the production method comprises the following steps:

[0058] In step S100, a plurality of copper wire coils are placed one by one in a plurality of wire feeding devices 520, so that the copper wire discharged from each copper wire coil passes through a corresponding first extrusion channel 501, a folding channel, and a second extrusion channel in sequence and is connected to a wire winding device;

[0059] In step S200, granules are placed into a plurality of melting grooves 711, and a heating and melting part 700 is used to melt the granules into molten material.

[0060] In step S300, the multiple screw conveyers 710, the multiple wire laying devices 520, the driving device 510, the second extruding device 200 and the wire winding device are controlled to start, the molten material in the multiple molten grooves 711 is correspondingly coated on the multiple copper wires to form multiple single-core electric cores, the multiple single-core electric cores are cooled, the multiple single-core electric cores are twisted into a cable, and the cable is processed by the second extruding device 200 to form a multi-core cable.

[0061] By using the production equipment, the extrusion molding of each single-core electric core, the twisting of the multiple single-core electric cores into a cable and the extrusion molding of the outer insulation layer of the multi-core cable can be continuously performed, which is beneficial to improve the production efficiency.

[0062] The preferred embodiments of the present application are specifically described above, but the present application is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the present application. The equivalent modifications or replacements are all included in the scope defined by the claims of the present application.

Claims

1. A multi-core cable extrusion molding die, characterized in that, include: The melting component is provided with multiple melting units. Each melting unit includes a vertically extending melting tank and a screw conveyor disposed within the melting tank. The top of the melting tank is provided with a feed inlet, and the bottom of the melting tank is provided with a discharge outlet. An extrusion component is provided with multiple extrusion structures, each extrusion structure including a first extrusion channel, an annular groove, and an intermediate channel connecting the first extrusion channel and the annular groove. All the annular grooves are coaxial and located on the top surface of the extrusion component. A molten component is sealed on the upper side of all the annular grooves. Multiple feed ports are connected to the multiple annular grooves one by one. The molten component and the extrusion component are rotatably arranged relative to each other, and the axis of relative rotation is coaxial with the annular groove. The first extrusion channel is located outside the molten component and penetrates the extrusion component vertically. A support frame is provided, wherein the melting component is fixedly disposed relative to the support frame, the extrusion component is rotatably disposed on the support frame, and the support frame is provided with a drive device for driving the extrusion component to rotate; The axis of relative rotation between the melting component and the extrusion component is called the first axis. The first axis is set vertically. The distance between the outlet of multiple melting units and the first axis is not the same. When the melting component rotates relative to the extrusion component, the movement trajectory of the outlet of each melting unit is circular and does not intersect with each other. The outlet of each melting unit remains connected to the corresponding annular groove. The intermediate channel is located below all the annular grooves. The intermediate channel extends in a direction perpendicular to the first axis. The end of the intermediate channel away from the first axis is connected to the corresponding first extrusion channel, and the end of the intermediate channel close to the first axis is connected to the corresponding annular groove.

2. The multi-core cable extrusion molding die according to claim 1, characterized in that: The melting component is cylindrical and coaxial with the annular groove, and a plurality of melting units are arranged sequentially at intervals along the circumference of the melting component.

3. The multi-core cable extrusion molding die according to claim 2, characterized in that: The extrusion component has a downwardly recessed first groove, the bottom of the melting component is located inside the first groove, and the first extrusion channel is located outside the first groove.

4. The multi-core cable extrusion molding die according to claim 2, characterized in that: Multiple sealing gaskets are provided between the bottom surface of the melting component and the extrusion component, and any one of the annular grooves is located between two of the sealing gaskets.

5. The multi-core cable extrusion molding die according to claim 2, characterized in that: The feed inlet is located on the outer circumferential surface of the melting component, and the rotating shaft of the screw conveyor passes through the top wall of the melting tank; a rotary driver is provided on the top of the melting component, and the rotating shafts of all the screw conveyors are linked to the rotary driver.

6. A production equipment, characterized in that: It includes a multi-core cable extrusion molding die as described in any one of claims 1 to 5 and a plurality of wire feeding devices, wherein the plurality of wire feeding devices are all disposed on the extrusion component and the plurality of wire feeding devices are configured in a one-to-one correspondence with the plurality of first extrusion channels.

7. The production equipment according to claim 6, characterized in that: It also includes a take-up device. A take-up channel and a second extrusion channel are sequentially provided below the extrusion component and between the take-up device. A cooling device is provided outside the take-up channel, and a second extrusion device is provided outside the second extrusion channel. The cooling device is used to cool the single-strand battery core sent out by the first extrusion channel. The second extrusion device is used to extrude the outer insulation layer of the cable made of multiple single-strand battery cores. The take-up device is used to take up the multi-core cable made after the outer insulation layer is extruded.

8. The production equipment according to claim 7, characterized in that: The cooling device includes a box body wrapped around the outside of the convergence channel and a circulation channel located beside the box body. The two ends of the circulation channel are respectively connected to the box body, and a cooler and a flow-promoting fan are provided in the circulation channel.

9. The production equipment according to claim 8, characterized in that: The circulation channel is provided with a powder inlet, which is located on the upstream side of the flow-promoting fan.

10. A production method, characterized in that: The production method of producing multi-core cables using the production equipment as described in any one of claims 7-9 includes: Multiple copper wire rolls are placed one-to-one into multiple wire feeding devices, so that the copper wires fed from each copper wire roll pass through the corresponding first extrusion channel, gathering channel, and second extrusion channel in sequence before being connected to the take-up device. Particles are placed into multiple melting tanks, and the melting components are heated to melt the particles into a molten material. The system controls the activation of multiple screw conveyors, multiple wire feeding devices, a drive device, a cooling device, a second extrusion device, and a take-up device, so that the molten material in multiple melting tanks covers multiple copper wires one by one to form multiple single-strand battery cores. The multiple single-strand battery cores are cooled and twisted into cables. The cables are then processed by the second extrusion device to form multi-core cables.

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