Intelligent production line for precise wire extrusion

Abstract

The invention discloses an intelligent production line for precise extrusion of electric wires, including a barrel pay-off machine, a wire core tension machine, an extruder, a water tank cooling device, a rotary cooling device, a drying device, a wire take-up tension device, a wire take-up device and an electric control device; the wire feed reel in the barrel pay-off machine is connected to the wire feed drive motor through a mandrel; a wire core control wheel is provided on the tension frame of the wire core tension machine, and the wire core control wheel is fixedly connected to the output shaft of the wire core control motor; two front and rear cooling rotary guide wheels are provided in the cooling rotary box of the rotary cooling device, and the two cooling rotary guide wheels are fixedly connected to the rotary guide wheel shaft and driven to rotate by the corresponding cooling rotary motors; the working linear speed of the wire core control wheel corresponds to the working linear speed of the cooling rotary guide wheel. The intelligent production line for precise extrusion of electric wires using the invention can not only ensure stable operation during the production process of electric wires and cables, but also ensure stable tension and small tension value during the production process.

Description

Technical Field

[0001] The invention relates to a complete set of equipment for producing electric wires and cables, and in particular to a plastic insulated electric wire and cable extrusion production line capable of realizing intelligent control. Background Art

[0002] Plastic insulated wires and cables are made of aluminum, copper and other conductors as the core of the wire wrapped in a plastic layer. During the production process, the wire core is drawn into the required specifications by the wire drawing machine and released from the wire pay-off machine under the pulling action of the traction transmission device. It is processed by the main production equipment such as the wire core tension machine, extruder, water tank cooling device, rotary cooling device, drying device, wire take-up tension device and wire take-up device to form the required wire and cable. The manufactured wires and cables must undergo corresponding quality inspections to meet the corresponding quality standards. Among them, the DC resistance of the wire and cable is a major quality control indicator, and its index value shall not be greater than the requirements specified in the product standard. This index value is closely related to the cross-sectional area of ​​the wire core after the wire and cable is manufactured.

[0003] In order to ensure that the resistivity of the finished wires and cables is not higher than the specified standard value, it is often necessary to control the cross-sectional specifications of the wire cores in the finished wires and cables to be consistent with the standard cross-sectional specifications of the wire and cable cores. During the production process, the wire core is pulled out from the pay-off machine under the traction force of the production line, and will be subject to a certain running resistance in each process link. Such resistance will cause the wire core to produce a certain stretch under the action of traction during the production process, causing the cross-sectional area of ​​the wire core to shrink, thereby increasing the resistivity of the finished wire and cable. Among them, the parts with greater running resistance that can cause the cross-sectional area of ​​the wire core to shrink are mainly the pay-off machine, the wire core tension machine and the rotary cooling device.During the pay-off process, the wire core wound on the wire drum is pulled out from the wire drum through the outer circle of the wire drum under the traction force of the production line. The wire drum rotates passively continuously during the pay-off process driven by the wire core. In the high-speed production line, although it is supported by bearings, the damping effect of the supporting bearings on the wire drum during the rotation of the wire drum is also large, and the speed of the wire core when it is pulled out from the wire drum is variable. The speed of the passive rotation of the wire drum driven by the wire core is different. Due to the inertia of the wire drum, the tension of the wire core will be uneven. After the wire core is pulled out from the pay-off machine, the movement speed of the wire core will be controlled by the wire core tension machine. The control process is realized by the magnetic powder tension control device in the wire core tension machine. The wire core bypasses the tension control guide wheel connected to the magnetic powder clutch. The magnetic powder clutch generates a certain resistance torque on the tension control guide wheel, so that the wire core maintains a certain tension and runs stably under the action of the traction power of the production line. Since the rotation of the tension control guide wheel is passively operated by the drag of the wire core, the tension of the wire core formed between the traction power of the production line and the resistance torque generated by the magnetic powder clutch will cause a certain stretching effect on the wire core, which will shrink the cross section of the wire core. When the running speed of the wire core is controlled When the wire core is adjusted or the running speed is affected by the resistance in the running path and changes, the tension of the wire core will fluctuate. Correspondingly, the cross-sectional area of ​​the wire core will change and affect the accuracy of the resistivity. In the high-speed production line of wires and cables, the semi-finished wires and cables formed after the wire core is coated with rubber by the extruder will be efficiently cooled by the rotary cooling device. In the rotary cooling device, front and rear cooling guide wheel shafts are provided. The cooling guide wheel with wheel grooves is rotatably supported on the cooling guide wheel shaft. The semi-finished wires and cables to be cooled in operation reciprocate around the wheel grooves on the front and rear cooling guide wheels, thereby increasing the residence time in the cooling area. , so that the semi-finished wires and cables are fully cooled. In this process, the cooling guide wheel rotatably supported on the cooling guide wheel shaft is passively rotated by the semi-finished wires and cables. Due to the running resistance of the cooling guide wheel, the semi-finished wires and cables will inevitably be subjected to a certain tensile force when overcoming the running resistance of the cooling guide wheel under the action of the traction force of the production line. This also causes the cross-section of the wire core in the semi-finished wires and cables to shrink, and the running resistance of the cooling guide wheel is not constant, so the cross-section shrinkage of the wire core is also not certain, which will cause the resistivity of the finished wires and cables to change and may cause the existence of defective products.

[0004] In order to avoid the final finished wire and cable being affected by the uncertain dynamic influence of the running resistance during the production process, resulting in the resistivity test index being unqualified, the cross-sectional specifications of the wire cores put into production by the wire drawing machine are usually larger than the cross-sectional specifications of the wire cores in the finished wires, and the cross-sectional dimensions of the wire cores in the finished wires and cables are larger than the cross-sectional dimensions required by the standard, so as to ensure the qualified rate of the resistivity test of the finished wires and cables. However, this will inevitably cause waste of wire cores. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide an intelligent production line for precise extrusion of electric wires, which can not only ensure stable operation during the production process of electric wires and cables, but also ensure stable tension and small tension value during the production process.

[0006] In order to solve the above technical problems, the present invention provides an intelligent production line for precise extrusion of electric wires, including a barrel pay-off machine, a wire core tension machine, an extruder, a water tank cooling device, a rotary cooling device, a drying device, a wire take-up tension device, a wire take-up device and an electronic control device. The barrel pay-off machine is provided with two barrel bodies, the center lines of the two barrel bodies are cross-arranged, the intersection of the center lines of the two barrel bodies is located outside the wire outlet of the barrel body and is adjacent to the wire core introduction device of the wire core tension machine, the two barrel bodies are connected as a whole at one end of the wire outlet, and a connection is opened on the barrel wall at the connection part of the two barrel bodies. The barrel body interface of the body cavity is provided with a wire feeding drum in the barrel body, and the wire feeding drum is rotatably supported on the core shaft, and the core shaft is transmission-connected with the wire feeding drive motor, and the core shaft is rotatably supported in the tubular wire drum supporting shaft; a wire core control wheel is provided on the tension frame of the wire core tension machine, and the wire core control wheel is fixedly connected to the output shaft of the wire core control motor, and the wire core control motor is installed on the tension frame, and a wire core pressing belt is attached to the outer surface of the wire core control wheel, and the wrap angle α of the wire core pressing belt on the wire core control wheel is greater than 120°, and the wire core pressing belt is tensioned on the tensioning wheel by at least three pressing belt guide wheels. The tension frame is supported by the belt pressing guide wheel, and the belt pressing guide wheel is rotatably supported on the tension frame. A wire core guide wheel is arranged between the wire core control wheel and the wire core lead-out device installed on the tension frame. A running path of the wire core in the wire core tension machine is formed from the wire core lead-in device through the outer surface of the wire core control wheel, the outer surface of the wire core guide wheel to the wire core lead-out device. The wrap angle ß of the running path of the wire core on the outer surface of the wire core control wheel is greater than 200°. Two front and rear cooling rotary guide wheels are arranged in the cooling rotary box of the rotary cooling device. The cooling rotary guide wheel is fixedly connected to the rotary guide wheel shaft. The wheel axles are driven to rotate by corresponding cooling rotary motors respectively. The cooling rotary motors are servo motors or stepper motors. At least 10 wire guide grooves are provided on the outer circle of the cooling rotary guide wheel. The linear velocity of the surface of the wire guide grooves on the front cooling rotary guide wheel corresponds to the corresponding surface linear velocity of the wire guide grooves on the rear cooling rotary guide wheel. A number of spray pipes are provided between the two cooling rotary guide wheels. The wire feeding drive motor, the wire core control motor and the cooling rotary motor are all electrically connected to the electronic control device. The working linear velocity of the wire core control wheel corresponds to the working linear velocity of the cooling rotary guide wheel.

[0007] In the above structure, since the swing barrel pay-off machine is provided with two swing barrel bodies, the center lines of the two swing barrel bodies are cross-arranged, and the intersection of the center lines of the two swing barrel bodies is located outside the swing barrel body outlet and adjacent to the wire core introduction device of the wire core tension machine, the two swing barrel bodies are connected as one at one end of the outlet, and a barrel body interface connecting the inner cavities of the two swing barrel bodies is opened on the barrel wall at the connection position of the two swing barrel bodies, and a wire feed drum is provided in the swing barrel body, and the wire feed drum is rotatably supported on the core shaft, and the core shaft is connected to the wire feed drive motor in a transmission manner, and the core shaft is rotatably supported in the tubular wire drum support shaft, and the core shaft providing support for the wire feed drum is driven to rotate by the wire feed drive motor, and when the wire feed drum rotates at high speed on the core shaft during the pay-off process, the core shaft can rotate in the same direction as the wire feed drum at the same time, so that the speed difference between the wire feed drum and the core shaft can be greatly reduced. In order to reduce the speed, the speed of the feed line driving motor can even be made higher than that of the feed reel, that is, the speed of the core shaft is greater than that of the feed reel. In comparison, the damping generated by the feed reel support bearing on the feed reel becomes correspondingly small, and the feed reel can be rotated more easily, thereby reducing the resistance to wire release and making the tension uniform, which meets the requirements of high-speed production. The swing-barrel wire-releasing machine is provided with two swing-barrel bodies, which are connected as a whole at one end of the wire outlet, and a barrel body interface connecting the inner cavities of the two swing-barrel bodies is opened on the barrel wall at the connection part of the two swing-barrel bodies, so that a wire reel can be configured in each swing-barrel body, and the wire cores on the two wire reels are connected end to end. When the wire reel in one swing-barrel body is used up, it can automatically turn to another wire reel for wire release, and the production line can run continuously without stopping to change reels or joints, thereby improving work efficiency.

[0008] Furthermore, since a wire core control wheel is provided on the tension frame of the wire core tension machine, the wire core control wheel is fixedly connected to the output shaft of the wire core control motor, the wire core control motor is installed on the tension frame, a wire core pressing belt is attached to the outer surface of the wire core control wheel, the wrap angle α of the wire core pressing belt on the wire core control wheel is greater than 120°, the wire core pressing belt is tensioned on the tension frame through at least three pressing belt guide wheels, the pressing belt guide wheel is rotatably supported on the tension frame, a wire core guide wheel is provided between the wire core control wheel and the wire core derivation device installed on the tension frame, and ... The running path of the wire core in the wire core tension machine is formed between the outer surface and the wire core lead-out device. The wrap angle ß of the running path of the wire core on the outer surface of the wire core control wheel is greater than 200°. The wire core control wheel replaces the conventional tension control guide wheel that is dragged by the wire core and passively operates under the control of the resistance torque generated by the magnetic powder clutch. The wire core control wheel will be actively driven by the wire core control motor. Its running speed can be conveniently adjusted by controlling the running speed of the wire core control motor, so that the wire core control wheel can control the running speed of the wire core to correspond to the running speed in the production process of wires and cables, that is, the wire core control wheel The surface line speed is equal to the running speed in the production process of wires and cables or maintains a small speed difference, so that the running tension of the wire core between the pay-off machine and the extruder can be accurately controlled to ensure that the running of the wire core is stable and the tension value is small in the production process of wires and cables. Accordingly, the running tension of the wire core controlled by the wire core control wheel fluctuates little, avoiding the fluctuation of the cross-sectional area of ​​the wire core, and the resistivity of the finished wire and cable is also guaranteed. It is no longer necessary to increase the cross-sectional area of ​​the wire core in the finished wire and cable to ensure the accuracy of the resistivity, and the waste of wire core materials is also controlled; The core pressing belt on the outer surface of the core control wheel with a wrap angle greater than 120° can clamp the core to ensure that the core can run synchronously with the core control wheel, so that the stability of the core running tension can be guaranteed; the core guide wheel can adapt well to the position of the core lead-out device, so that the core can be smoothly output from the core lead-out device, and the wrap angle ß of the core running path on the outer surface of the core control wheel is greater than 200°, which can maintain a larger contact range between the core control wheel and the core to effectively control the core and avoid the core slipping on the surface of the core control wheel and affecting the stability of the core operation.

[0009] In addition, since two front and rear cooling rotary guide wheels are arranged in the cooling rotary box of the rotary cooling device, the cooling rotary guide wheel is fixedly connected to the rotary guide wheel shaft, and the two rotary guide wheel shafts are respectively driven to rotate by corresponding cooling rotary motors, and the cooling rotary motors are servo motors or stepper motors. At least 10 wire guide grooves are arranged on the outer circle of the cooling rotary guide wheel, and the linear velocity of the wire guide groove surface on the front cooling rotary guide wheel corresponds to the corresponding surface linear velocity of the wire guide groove on the rear cooling rotary guide wheel. A plurality of spray pipes are arranged between the two cooling rotary guide wheels at intervals. Compared with the prior art in which the cooling guide wheel is driven by wire guides, The cable semi-finished product is driven to rotate passively. The cooling rotary guide wheel is fixedly connected to the rotary guide wheel shaft and driven to rotate by the cooling rotary motor. The cooling rotary guide wheel will not only not form running resistance to the running wire and cable semi-finished products, but will generate driving force for the running wire and cable semi-finished products. The cooling rotary guide wheel runs at a precise speed under the drive of the servo motor or stepper motor as the cooling rotary motor. The front and rear cooling rotary guide wheels can keep the line speed consistent, so that the tension of the wire and cable semi-finished products is stable and the tension value is small during the cooling process, and the cooling process driven by the front and rear cooling rotary guide wheels can be The running speed of the semi-finished wires and cables in the production line is consistent with that in the production line. In this way, during the rotary cooling process, the semi-finished wires and cables will not produce running resistance and cause the cross-sectional shrinkage of the wire core, nor will it cause the resistivity of the finished wires and cables to change and cause unqualified products. The semi-finished wires and cables can reciprocate at least 10 cycles on the front and rear cooling rotary guide wheels. With the appropriate axis spacing between the two rotary guide wheel axes, the semi-finished wires and cables can stay in the cooling rotary box for a longer time and be fully cooled, which is good for the high-speed production of wires and cables. The invention is very beneficial for the production line; the linear speed of the working surface between the two cooling rotary guide wheels can be the same or maintain a small speed difference to maintain the stable operation of the semi-finished wires and cables during the rotary cooling process, ensuring the stable tension and small tension value of the semi-finished wires and cables during the cooling process; the semi-finished wires and cables winding around the front and rear cooling rotary guide wheels are not cooled by immersing in the cooling medium, but are cooled by the cooling medium sprayed from the spray pipe. The cooling medium sprayed from the spray pipe is easier to vaporize when heated, thereby absorbing a large amount of heat, which will have a better cooling effect on the semi-finished wires and cables.

[0010] Furthermore, since the wire feeding drive motor, wire core control motor and cooling rotary motor are all electrically connected to the electronic control device, and the working linear speed of the wire core control wheel corresponds to the working linear speed of the cooling rotary guide wheel, the wire feeding drive motor, wire core control motor and cooling rotary motor are all operated under the regulation of the electronic control device, which can form multi-point drive for the wire core and the semi-finished wires and cables in the production process, and make the rotation speed of the wire feeding reel, the working linear speed of the wire core control wheel and the working linear speed of the cooling rotary guide wheel correspond to each other and adapt to the operating speed of the wire and cable production line, thereby ensuring the stable operation of the wire core and the semi-finished wire and cable in the production process of the wire and cable, and ensuring that the tension of the wire core is stable and the tension value is small during the production process, and at the same time, the cross-section of the wire core in the finished wire and cable is stably and accurately controlled within the standard value range, which not only ensures the qualified rate of the resistivity detection of the finished wire and cable, but also reduces the waste of wire core.

[0011] In a preferred embodiment of the present invention, the core control motor is a servo motor or a stepper motor. With this embodiment, the servo motor or the stepper motor can accurately control the running speed, and can ensure that the driven core control wheel runs at the required speed.

[0012] In another preferred embodiment of the present invention, the wrap angle α of the core pressing belt on the core control wheel is 120° to 250°. This embodiment can ensure the most effective clamping of the core by the core pressing belt, and facilitate the position and structural arrangement of the core control wheel, the core pressing belt and its pressing belt guide wheel.

[0013] In another preferred embodiment of the present invention, the wrap angle ß of the running path of the wire core on the outer surface of the wire core control wheel is 200° to 300°. With this embodiment, the control requirement of the wire core control wheel on the wire core can be met, and the wire core will not slip on the surface of the wire core control wheel.

[0014] In a further preferred embodiment of the present invention, the core guide wheel is located above the core control wheel, and a guide sleeve is provided on the running path of the core between the core guide wheel and the core control wheel. With this embodiment, it can be ensured that the position of the core lead-out device can correspond to the height position of the extruder, and the position of the core control wheel can correspond to the position of the core lead-in device, adapting to the height position of the barrel pay-off machine, and the provided guide sleeve can cause the core to be misaligned along the axial direction of the core control wheel when entering and exiting the core control wheel, avoiding possible interference when the core enters and exits the core control wheel, and meeting the requirement that the wrap angle ß of the running path of the core on the outer surface of the core control wheel is greater than 200°.

[0015] In another further preferred embodiment of the present invention, the rotary guide wheel shaft is rotatably supported on the cooling rotary box body, the rotary guide wheel shaft is connected to the output shaft of the cooling rotary motor through a gear transmission pair or a toothed belt transmission pair, and the cooling rotary motor is installed on the rotary box frame. In this embodiment, the rotary guide wheel shaft is connected to the output shaft of the cooling rotary motor through a gear transmission pair or a toothed belt transmission pair to ensure accurate motion transmission and facilitate the installation of the cooling rotary motor.

[0016] In another preferred embodiment of the present invention, 15 to 25 wire guide grooves are provided on the outer circumference of the cooling rotary guide wheel. In this embodiment, 15 to 25 wire guide grooves are provided on the outer circumference of the cooling rotary guide wheel to meet the cooling requirements of the existing high-speed wire and cable production line.

[0017] In a further preferred embodiment of the present invention, two rows of nozzles are installed on each of the spray pipes, and the angle γ between the two rows of nozzles is 60° to 120°. With this embodiment, the coolant can be evenly distributed through the nozzles, and the spraying effect is better. Each spray pipe can spray two rows of coolant, and the corresponding cooling area range is wide.

[0018] In another further preferred embodiment of the present invention, the nozzles on two adjacent spray pipes are arranged in a staggered orientation. With this embodiment, the upper and lower rows of semi-finished wire and cable products that bypass the cooling rotary guide wheel can be spray-cooled.

[0019] In another further preferred embodiment of the present invention, the spray pipe is connected to a liquid supply pump. With this embodiment, the liquid supply pump can provide the spray pipe with cooling liquid with a certain pressure to ensure a good spray cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The intelligent production line for precise wire extrusion of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Figure 1 It is a structural schematic diagram of a specific implementation method of the intelligent production line for precise extrusion of electric wires of the present invention;

[0022] Figure 2 yes Figure 1 A top view of the barrel pay-off machine and the wire core tension machine in the structure shown;

[0023] Figure 3 yes Figure 1 The schematic diagram of the structure of the barrel-swinging pay-off machine in the structure shown;

[0024] Figure 4 yes Figure 1 A schematic diagram of the structure of the wire core tension machine in the structure shown;

[0025] Figure 5 Figure 4 A cross-sectional view of the AA portion of the structure shown;

[0026] Figure 6 yes Figure 1 A schematic diagram of the structure of the rotary cooling device in the structure shown;

[0027] Figure 7 yes Figure 6 A top view of

[0028] Figure 8 yes Figure 6 A cross-sectional view of the BB portion of the structure shown.

[0029] In the figure: 1-barrel pay-off machine, 101-feeding wire driving motor, 102-barrel body, 103-feeding wire reel, 104-barrel body interface, 105-reel car, 106-reel support shaft, 107-core shaft, 2-core tension machine, 201-core introduction device, 202-core control wheel, 203-core control motor, 204-tension frame, 205-core lead-out device, 206-pressing belt guide wheel, 207-core pressing belt, 208-guide sleeve, 2 09-wire core running path, 210-wire core guide wheel, 3-extruder, 4-electronic control device, 5-water trough cooling device, 6-rotating cooling device, 601-cooling rotary guide wheel, 602-cooling rotary box, 603-spray pipe, 604-nozzle, 605-rotating box frame, 606-cooling rotary motor, 607-liquid supply pump, 608-wire guide groove, 609-rotating guide wheel shaft, 7-drying device, 8-wire take-up tension device, 9-wire take-up device. DETAILED DESCRIPTION

[0030] exist Figure 1 In the shown intelligent production line for precise wire extrusion, the barrel pay-off machine 1, the wire core tension machine 2, the extruder 3, the water tank cooling device 5, the rotary cooling device 6, the drying device 7, the wire take-up tension device 8, the wire take-up device 9 and the electronic control device 4 are the main equipment constituting the intelligent production line for precise wire extrusion. Of course, on this basis, other equipment such as a printer can also be provided in the intelligent production line for precise wire extrusion.

[0031] like Figure 2 As shown, the barrel pay-off machine 1 is provided with two barrel bodies 102, the center lines of the two barrel bodies 102 are cross-arranged, the intersection of the center lines of the two barrel bodies 102 is located outside the outlet of the barrel body 102 and adjacent to the wire core introduction device 201 of the wire core tension machine 2, and the two barrel bodies 102 are connected as a whole at one end of the outlet, see Figure 3A barrel body interface 104 connecting the inner cavities of the two barrel bodies 102 is opened on the barrel wall at the connection position of the two barrel bodies 102, and a wire feeding drum 103 is arranged in the barrel body 102. The wire feeding drum 103 is rotatably supported on a core shaft 107, and the core shaft 107 is transmission-connected to the wire feeding drive motor 101. The core shaft 107 is rotatably supported in a tubular wire drum support shaft 106, and the wire drum support shaft 106 is installed on a wire drum car 105, for the extruder 3 to coat the rubber to produce the wire core winding of the wire and cable, and the wire drum is sleeved on the wire drum support shaft 106. After the wire core is drawn out, it enters the wire core tension machine 2 through the wire core introduction device 201 of the wire core tension machine 2. The wire core introduction device 201 is installed in the middle left side of the tension machine frame 204, which usually includes a cleaning seat with felt installed and a porcelain guide sleeve located before and after the cleaning seat and installed on the tension machine frame 204 through a guide sleeve seat.

[0032] like Figure 4 and Figure 5As shown, a core control wheel 202 is provided on the tension frame 204 of the core tension machine 2, and the core control wheel 202 is fixedly connected to the output shaft of the core control motor 203. The core control motor 203 is a servo motor or a stepping motor, and the core control motor 203 is installed on the tension frame 204; the outer surface of the core control wheel 202 is attached with a core pressing belt 207, and the core released from the barrel pay-off machine 1 is clamped between the outer surface of the core control wheel 202 and the core pressing belt 207. The wrap angle α of the core pressing belt 207 on the core control wheel 202 is greater than 120°. As a preferred embodiment, the core pressing belt The wrap angle α of 207 on the core control wheel 202 is 120°~250°, the core pressing belt 207 is tensioned on the tension frame 204 through three pressing belt guide wheels 206, the three pressing belt guide wheels 206 are distributed in a triangle shape on the periphery of the core control wheel 202, the pressing belt guide wheels 206 are rotatably supported on the tension frame 204, and one of the pressing belt guide wheels 206 is rotatably supported on the tension frame 204 through a movable support, the tensioning force of the core pressing belt 207 is ensured by the movable pressing belt guide wheel 206, when the core control motor 203 drives the core control wheel 202 to rotate and control the core to run, the pressing belt guide wheels 206 are pressed and pulled on the tension frame 204. The wire core pressing belt 207 which is tensioned by the wheel 206 and tightly fits on the surface of the wire core control wheel 202 ensures that the wire core therein can run synchronously and stably with the wire core control wheel 202; a wire core leading-out device 205 is installed on the upper right side of the tension frame 204, and the wire core leading-out device 205 usually includes two guide wheels with V-shaped wheel grooves, and the two guide wheels are rotatably supported on the guide wheel bracket, and the guide wheel bracket is adjustably installed on the tension frame 204, and a wire core guide wheel 210 is provided between the wire core control wheel 202 and the wire core leading-out device 205, and the wire core guide wheel 210 is located above the wire core control wheel 202, and the wire core guide wheel 210 and the wire core leading-out device 205 are connected. A guide sleeve 208 is provided on the running path 209 of the wire core between the wire core control wheels 202, and the guide sleeve 208 is installed on the tension machine frame 204 through a guide sleeve seat. The running path 209 of the wire core in the wire core tension machine 2 is formed from the wire core introduction device 201 through the outer surface of the wire core control wheel 202, the outer surface of the wire core guide wheel 210 to the wire core outlet device 205. The wrap angle ß of the running path 209 of the wire core on the outer surface of the wire core control wheel 202 is greater than 200°. As a preferred embodiment, the wrap angle ß of the running path 209 of the wire core on the outer surface of the wire core control wheel 202 is 200°~300°.

[0033] The wire cores led out from the wire core lead-out device 205 enter the extruder 3 for rubber coating to form semi-finished wire and cable products. The semi-finished wire and cable products are initially cooled and shaped by the water tank cooling device 5 and then enter the rotary cooling device 6.

[0034] like Figure 6 and Figure 7As shown, the cooling rotary box 602 in the rotary cooling device 6 is a long strip box member, the cooling rotary box 602 is mounted and supported on a rotary box frame 605, and two front and rear cooling rotary guide wheels 601 are provided at both ends of the cooling rotary box 602, and at least 10 wire guide grooves 608 are provided on the outer circumference of the cooling rotary guide wheel 601. As a preferred embodiment, 15 to 25 wire guide grooves 608 are provided on the outer circumference of the cooling rotary guide wheel 601. The cross section of 8 is trapezoidal. The semi-finished wire and cable to be cooled enters from the rear end of the cooling rotary box 602, passes through the first wire guide groove 608 of the cooling rotary guide wheel 601 at the rear end to the first wire guide groove 608 of the cooling rotary guide wheel 601 at the front end, then bypasses the wire guide groove 608 and goes backward to the second wire guide groove 608 of the rear cooling rotary guide wheel 601, and then bypasses the wire guide groove 608 and goes forward, thus bypassing the front and rear cooling rotary guide wheels in sequence. The wire guide grooves 608 of the cooling rotary guide wheel 601 are provided with a plurality of spray pipes 603 at intervals between the two cooling rotary guide wheels 601. The spray pipes 603 are arranged parallel to the axis of the cooling rotary guide wheel 601. Two rows of nozzles 604 are installed on each spray pipe 603. The angle γ between the two rows of nozzles 604 is 60° to 120°. The nozzles 604 in each row are arranged at intervals along the axial direction of the spray pipe 603. The nozzles 604 on the two adjacent spray pipes 603 are oriented in the direction of the spray pipe 604. They are staggered upward and downward respectively, and each spray pipe 603 is connected to a liquid supply pump 607. The liquid supply pump 607 pumps the coolant in the coolant source into each spray pipe 603 and sprays it through each nozzle 604 to the semi-finished wires and cables to be cooled that are passing between the front and rear cooling rotary guide wheels 601 for cooling. The fully cooled semi-finished wires and cables are output from the front end of the cooling rotary box 602 through the last wire guide groove 608 of the rear cooling rotary guide wheel 601.

[0035] See also Figure 8 The cooling rotary guide wheel 601 is fixedly connected to the rotary guide wheel shaft 609, and the two rotary guide wheel shafts 609 are driven to rotate by the corresponding cooling rotary motors 606, so that the linear velocity of the surface of the wire guide groove 608 on the front cooling rotary guide wheel 601 corresponds to the corresponding surface linear velocity of the wire guide groove 608 on the rear cooling rotary guide wheel 601. As a preferred embodiment, the rotary guide wheel shaft 609 is rotatably supported on the cooling rotary box body 602, and the rotary guide wheel shaft 609 is connected to the output shaft of the cooling rotary motor 606 through a toothed belt drive pair. The cooling rotary motor 606 is installed on the rotary box frame 605, and the cooling rotary motor 606 is a servo motor or a stepper motor.

[0036] The semi-finished wire and cable cooled by the rotary cooling device 6 is dried by the drying device 7, and then wound into a wire coil by the wire taking-up device 9 after passing through the wire taking-up tension device 8. The winding tension of the finished wire and cable by the wire taking-up device 9 is regulated by the wire taking-up tension device 8, thereby completing the production of the finished wire and cable.

[0037] In the entire production line, the feed line drive motor 101, the core control motor 203 and the two cooling rotary motors 606 are all electrically connected to the electronic control device 4, which controls and coordinates the rotation speed of the feed line drive motor 101, the core control motor 203 and the two cooling rotary motors 606, so that the core entering the extruder 3 in the production process is actively pulled out of the barrel wire-spinning machine 1 by the core control motor 203 driving the core control wheel 202, and the semi-finished wire and cable after being rubber-coated by the extruder 3 is actively pulled by the cooling rotary motor 606 driving the cooling rotary guide wheel 601, and the working line speed of the core control wheel 202 corresponds to the working line speed of the cooling rotary guide wheel 601, thereby ensuring that the tension of the core and the semi-finished wire and cable products is stable and the tension value is small during the production process, and ensuring stable operation during the production process of the wire and cable.

[0038] The above only lists some preferred embodiments of the present invention, but the present invention is not limited thereto, and many improvements and changes can be made. For example, the core pressing belt 207 may not be stretched on the tension frame 204 through three pressing belt guide wheels 206, and the three pressing belt guide wheels 206 are distributed in a triangle on the periphery of the core control wheel 202, but the core pressing belt 207 may be stretched on the tension frame 204 through four pressing belt guide wheels 206, and the four pressing belt guide wheels 206 are distributed in a quadrilateral on the periphery of the core control wheel 202; the rotary guide wheel shaft 609 and the output shaft of the cooling rotary motor 606 may not be connected through a toothed belt transmission pair, but may be connected through a gear transmission pair; the cooling rotary motor 606 may not be installed on the rotary box frame 605, but may be installed on the cooling rotary box body 602. And so on, as long as they are improvements and changes made on the basis of the basic principles of the present invention, they should be regarded as falling within the protection scope of the present invention.

Claims

1. An intelligent production line for precise extrusion of electric wires, comprising a barrel pay-off machine (1), a wire core tension machine (2), an extruder (3), a water tank cooling device (5), a rotary cooling device (6), a drying device (7), a wire take-up tension device (8), a wire take-up device (9) and an electronic control device (4), characterized in that: The barrel-swinging wire-releasing machine (1) is provided with two barrel-swinging bodies (102), the center lines of the two barrel-swinging bodies (102) are arranged crosswise, the intersection of the center lines of the two barrel-swinging bodies (102) is located outside the wire outlet of the barrel-swinging body (102) and adjacent to the wire core introduction device (201) of the wire core tension machine (2), the two barrel-swinging bodies (102) are connected as a whole at one end of the wire outlet, a barrel body interface (104) for connecting the inner cavities of the two barrel-swinging bodies (102) is opened on the barrel wall at the connection part of the two barrel-swinging bodies (102), a wire feeding drum (103) is arranged in the barrel-swinging body (102), the wire feeding drum (103) is rotatably supported on a core shaft (107), the core shaft (107) is transmission-connected to the wire feeding driving motor (101), and the core shaft (107) is rotatably supported on a tubular A wire drum support shaft (106) is provided on a tension frame (204) of the wire core tension machine (2); the wire core control wheel (202) is fixedly connected to the output shaft of a wire core control motor (203); the wire core control motor (203) is mounted on the tension frame (204); a wire core pressing belt (207) is attached to the outer surface of the wire core control wheel (202); the wrap angle α of the wire core pressing belt (207) on the wire core control wheel (202) is greater than 120°; the wire core pressing belt (207) is tensioned on the tension frame (204) through at least three pressing belt guide wheels (206); the pressing belt guide wheels (206) are rotatably supported on the tension frame (204); the wire core control wheel (202) and a wire core pressing belt (207) mounted on the tension frame are connected to each other. A wire core guide wheel (210) is provided between the wire core guide device (205) on the wire core guide wheel (204), and a running path (209) of the wire core in the wire core tension machine (2) is formed from the wire core introduction device (201) through the outer surface of the wire core control wheel (202), the outer surface of the wire core guide wheel (210) to the wire core guide device (205), and the wrap angle β of the running path (209) of the wire core on the outer surface of the wire core control wheel (202) is greater than 200°; two front and rear cooling rotary guide wheels (601) are provided in the cooling rotary box (602) of the rotary cooling device (6), and the cooling rotary guide wheel (601) is fixedly connected to the rotary guide wheel shaft (609), and the two rotary guide wheel shafts (609) are respectively driven by corresponding cooling rotary motors (6 06) is driven to rotate, the cooling rotary motor (606) is a servo motor or a stepping motor, at least 10 wire guide grooves (608) are provided on the outer circle of the cooling rotary guide wheel (601), the surface linear speed of the wire guide groove (608) on the front cooling rotary guide wheel (601) corresponds to the surface linear speed of the wire guide groove (608) on the rear cooling rotary guide wheel (601), and a plurality of spray pipes (603) are provided between the two cooling rotary guide wheels (601); the wire feeding drive motor (101), the wire core control motor (203) and the cooling rotary motor (606) are all electrically connected to the electric control device (4), and the working linear speed of the wire core control wheel (202) corresponds to the working linear speed of the cooling rotary guide wheel (601);The wrap angle α of the wire core pressing belt (207) on the wire core control wheel (202) is 120° to 250°; the wrap angle β of the wire core running path (209) on the outer surface of the wire core control wheel (202) is 200° to 300°.

2. The intelligent production line for precise wire extrusion according to claim 1 is characterized by: The wire core control motor (203) is a servo motor or a stepping motor.

3. The intelligent production line for precise wire extrusion according to claim 1 is characterized by: The wire core guide wheel (210) is located above the wire core control wheel (202), and a guide sleeve (208) is provided on the running path (209) of the wire core between the wire core guide wheel (210) and the wire core control wheel (202).

4. The intelligent production line for precise wire extrusion according to claim 1 is characterized by: The rotary guide wheel shaft (609) is rotatably supported on the cooling rotary box body (602), and the rotary guide wheel shaft (609) is connected to the output shaft of the cooling rotary motor (606) through a gear transmission pair or a toothed belt transmission pair, and the cooling rotary motor (606) is installed on the rotary box frame (605).

5. The intelligent production line for precise wire extrusion according to claim 1 is characterized by: 15 to 25 wire guide grooves (608) are provided on the outer circumference of the cooling rotary guide wheel (601).

6. The intelligent production line for precise wire extrusion according to claim 1 is characterized by: Two rows of nozzles (604) are installed on each of the spray pipes (603), and the angle γ between the two rows of nozzles (604) is 60° to 120°.

7. The intelligent production line for precise wire extrusion according to claim 1 or 6, characterized in that: The directions of the nozzles (604) on two adjacent spray pipes (603) are staggered.

8. The intelligent production line for precise wire extrusion according to claim 1 or 6, characterized in that: The spray pipe (603) is connected to the liquid supply pump (607).

Images