Multi-wire multi-layer extrusion device

Abstract

The utility model discloses a multi-line multi-layer extrusion device which comprises a plurality of production lines arranged in parallel, a plurality of feeding devices and a control system. And each feeding device is connected with a plurality of production lines, so that multi-line production is realized. Each production line is provided with a machine head, each machine head is provided with a plurality of feeding ports and at least one extrusion port, the feeding ports are connected with the flow dividers of the different feeding devices respectively, and multi-layer production is achieved. The production line further comprises a traction device used for controlling the flow direction and the flow speed of the product and a diameter measuring device used for measuring the diameter of the product, and the traction device and the diameter measuring device are in signal connection with the control system. Automatic feedback control over the product diameter is achieved through the traction device, the diameter measuring device and the control system, manual intervention is reduced, and the automation degree and the production efficiency in the production process are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rubber and plastic extruders, in particular to a multi-line and multi-layer extrusion device. Background Art

[0002] In the production of wire and cable, the industry is constantly exploring and applying new technologies to improve production efficiency and product quality. Traditional single-layer or double-layer co-extrusion dies are unable to quickly extrude multiple layers of material, resulting in complex production steps and high costs. To meet the production needs of multi-layer co-extrusion, related production equipment and technologies are constantly being improved. The current challenge is how to ensure that the thickness of each layer of multi-layer products is uniform and meets production requirements. At the same time, to improve production efficiency, combining multi-line production with multi-layer co-extrusion is an inevitable choice driven by current wire and cable production technology innovations and market demand. However, due to the lack of necessary control measures, multi-layer products produced simultaneously on multiple lines often fail to meet production standards in terms of product quality and consistency. Utility Model Content

[0003] The purpose of the utility model is to solve the above-mentioned deficiencies in the prior art and to provide an extrusion device that can realize the simultaneous production of multiple production lines, extrude multi-layer rubber and plastic products, and automatically control product specifications.

[0004] The utility model provides a multi-line and multi-layer extrusion device, comprising:

[0005] Multiple production lines, multiple feeding devices and a control system are arranged in parallel, and each feeding device is connected to multiple production lines;

[0006] Each of the production lines is provided with a die head, and the die heads on the multiple production lines are arranged in parallel. The die heads are provided with multiple feed ports and at least one extrusion port. The production line also includes a traction device for controlling the flow direction and flow rate of the product, and the traction device is connected to the control system by signal. The production line also includes a caliper device for measuring the diameter of the product, and the caliper device is connected to the control system by signal.

[0007] The feeding device is used to provide raw materials, including an extruder and a splitter, the splitter includes an input pipe and multiple output pipes, the input pipe is connected to the multiple output pipes, the end of the input pipe away from the output pipe is connected to the extruder, and the ends of the multiple output pipes away from the input pipe are respectively connected to the multiple heads;

[0008] The multiple feed ports on each machine head are respectively connected to the diverters of different feeding devices.

[0009] In one embodiment, a flow valve capable of controlling the flow of raw materials is provided on the output pipeline, and the flow valve is connected to the control system signal.

[0010] In one embodiment, the feeding device also includes multiple control valves and multiple motors, each of the output pipes is provided with a control valve, and each of the control valves is connected to a motor; the motor is connected to the control system signal; the head is provided with a pressure sensor for detecting the feed pressure; the pressure sensor is connected to the control system signal.

[0011] In one embodiment, a multi-line multi-layer extrusion device comprises: two parallel production lines, three feeding devices and a control system, wherein each of the feeding devices is connected to the two production lines;

[0012] The die head is provided with three feed ports and one extrusion port;

[0013] The flow divider is a Y-shaped structure, comprising an input pipe and two output pipes, wherein the input pipe is connected to the two output pipes, and the ends of the two output pipes away from the input pipe are respectively connected to the heads of the two production lines;

[0014] The three feed ports on each machine head are respectively connected to the diverters of the three feeding devices.

[0015] In one embodiment, the products on the two production lines have the same outer diameter.

[0016] In one embodiment, the products on the two production lines have a three-layer structure, and the machine head has an inner layer rubber channel, a middle layer rubber channel and an outer layer rubber channel. The inner layer rubber channel, the middle layer rubber channel and the outer layer rubber channel are connected to the three feeding devices through the three feed ports.

[0017] The multi-line and multi-layer extrusion device of the technical solution of the present invention includes multiple production lines arranged in parallel, multiple feeding devices and a control system. Each feeding device is connected to multiple production lines to realize multi-line production. Each production line is provided with a machine head, and the machine head is provided with multiple feed ports and at least one extrusion port. The multiple feed ports are respectively connected to the diverters of different feeding devices to realize multi-layer production. The production line also includes a traction device for controlling the flow direction and flow rate of the product and a caliper device for measuring the diameter of the product. The traction device and the caliper device are respectively connected to the control system signal. Automatic feedback control of the product diameter is achieved through the traction device, the caliper device and the control system, which reduces manual intervention and improves the degree of automation and production efficiency in the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the description of the embodiments or the prior art. Obviously, the drawings described below only constitute some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the structures shown in the drawings without creative labor.

[0019] Figure 1 is a perspective structural schematic view of one embodiment of the multi-line multi-layer extrusion device of the present application;

[0020] Figure 2 is Figure 1 is a partial enlarged view of position I in FIG.

[0021] Figure 3 is a top view of one embodiment of the multi-line multi-layer extrusion device of the present application;

[0022] Figure 4 is Figure 3 is a partial enlarged view of position II in FIG.

[0023] Figure 5 is a perspective structural schematic view of one embodiment of the multi-line multi-layer extrusion device of the present application (with pressure sensor);

[0024] Figure 6 is Figure 5 is a partial enlarged view of position III in FIG.

[0025] Explanation of reference numerals:

[0026] Label name Label name Label name 100 production line 12 Extrusion port 52 Output Pipeline 200 Feeding device 2 traction device 61 Flow valve 300 product 3 Diameter measuring device 62 control valves 400 control system 4 Extruder 63 pressure sensor 1 machine head 5 Shunt 11 Feed port 51 Input pipeline

[0027] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments only constitute some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0030] In the utility model, unless another explicit provision and limitation, the terms "connection", "fixing" and the like should be understood broadly, for example, "fixing" can be fixed connection, also can be detachable connection, or be integrated, can be mechanical connection, also can be electrical connection, can be direct connection, also can be indirect connection through intermediate medium, can be the intercommunication of two elements or the interaction of two elements, unless another explicit limitation. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0031] In addition, in the utility model, the description such as "first", "second" is only for the purpose of description, and can not be understood as indicating or implying the relative importance of or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel schemes, for example, "A and / or B", including A scheme, or B scheme, or A and B simultaneously meet the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on that ordinary skilled in the art can realize, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, also not within the protection scope required by the utility model.

[0032] In the production process of electric wire and cable, in order to improve production efficiency and product quality, the industry is constantly exploring and applying new technology. The traditional single or double layer co-extrusion die cannot quickly complete the extrusion of multi-layer material, and the production steps are more complicated, and the cost is higher. In order to adapt to the production demand of multi-layer co-extrusion, the related production equipment and technology are also constantly improved, how to ensure that the thickness of each layer of multi-layer product is uniform and meets the production demand is the problem currently faced. At the same time, in order to improve production efficiency, combining multi-line production with multi-layer co-extrusion is the inevitable choice under the current electric wire and cable production technology innovation and market demand driving, but due to the lack of necessary control means, often leading to the multi-layer product produced by multi-line at the same time does not meet the production standard in product quality and consistency.

[0033] The utility model provides a kind of multi-line multi-layer extrusion device. Please refer to Figures 1 to 6The multi-line multi-layer extrusion device includes multiple parallel production lines 100, multiple feeding devices 200 and a control system 400. Each feeding device 200 is connected to multiple production lines 100. Each production line 100 is provided with a machine head 1. The machine heads 1 on the multiple production lines 100 are arranged in parallel. The machine heads 1 are provided with multiple feed ports 11 and at least one extrusion port 12. The production line 100 also includes a traction device 2 for controlling the flow direction and flow rate of the product 300. The traction device 2 is connected to the control system 400 by signal. The production line 100 also includes a device for measuring the product 300. The diameter measuring device 3 is connected to the control system 400 by signal; the feeding device 200 is used to provide raw materials, including an extruder 4 and a diverter 5, the diverter 5 includes an input pipe 51 and multiple output pipes 52, the input pipe 51 is connected to the multiple output pipes 52, the end of the input pipe 51 away from the output pipe 52 is connected to the extruder 4, and the ends of the multiple output pipes 52 away from the input pipe 51 are respectively connected to the multiple heads 1; the multiple feed ports 11 on each head 1 are respectively connected to the diverters 5 of different feeding devices 200.

[0034] In this embodiment, the multi-line, multi-layer extrusion device has at least two production lines 100, and the multiple production lines 100 are arranged in parallel. It can be understood that each production line 100 can be used to produce products 300 of different models and different sizes, and can also be used to produce products 300 of the same model and the same size, thereby meeting diverse production needs and improving production efficiency. The multi-line, multi-layer extrusion device has at least two feeding devices 200, each of which is connected to multiple production lines 100 to provide raw materials to the production lines 100. The production line 100 has a head 1, and the head 1 has multiple layers of rubber channels inside. The head 1 is provided with multiple feed ports 11, and each feed port 11 is connected to a different rubber channel respectively, so that each layer of the rubber channel is connected to a different feeding device 200, realizing multi-layer production of the product 300, and the production and molding of each layer in the head 1 do not affect each other. The die head 1 is provided with at least one through-hole for the wire to pass through, and the die head 1 is also provided with at least one extrusion port 12. The through-hole is connected to the extrusion port 12. The product 300 is formed by extruding the wire and the multi-layer rubber compound together, and extends out of the die head 1 from the extrusion port 12. The feeding device 200 includes an extruder 4 and a diverter 5. The extruder 4 is used to provide raw materials for forming the product 300. The extruder 4 is connected to the die head 1 through the diverter 5. The diverter 5 has an input pipe 51 and multiple output pipes 52. The input pipe 51 is connected to the extruder 4, and the multiple output pipes 52 are respectively connected to the die heads 1 of multiple production lines 100. The input pipe 51 is connected to the output pipe 52. The raw materials flow out of the extruder 4, pass through the input pipe 51, and are diverted to the multiple output pipes 52. Then, they enter different die heads 1 through the feed port 11. As can be understood, each feeding device 200 is connected to the die heads 1 of multiple production lines 100 via a diverter 5, enabling multi-line production. Each die head 1 has multiple layers of rubber channels, each of which is connected to the diverter 5 via a feed port 11. Each die head 1 is connected to the output pipes 52 of multiple material devices 200, enabling multi-layer production. This multi-line, multi-layer extruder also has a control system 400 and a traction device 2. The control system 400 is signal-connected to the traction device 2 to control the flow direction and flow rate of the product 300. The traction device 2 controls the extrusion diameter of the product 300 by adjusting the traction speed. When the diameter is too small, the traction speed is increased to adjust the extrusion diameter to the specified value, and vice versa. As can be understood, the traction device 2 on the production line 100 is set at a speed that matches the diameter requirement of the product 300 during production, ensuring that the extrusion speed of the product 300 remains at a precise value, preventing the extrusion diameter of the product 300 from being uneven or not meeting product specifications, which could affect electrical and mechanical properties. By setting specific pulling speeds for the pulling devices 2 on different production lines 100, products 300 of specific specifications and sizes can be produced. A diameter measuring device 3 is provided on the production line 100, and a control system 400 is connected to the diameter measuring device 3 to achieve real-time monitoring of the outer diameter of the product 300 and provide signal feedback.The diameter measuring device 3 is used to monitor the diameter of the extruded product 300 in real time and feed back the measured data to the control system 400. When the measured diameter value deviates, the control system 400 will immediately receive a signal and adjust the traction speed of the traction device 2 to correct the deviation and implement feedback control, thereby ensuring that the diameter of the product 300 is accurate and meets production requirements, thereby improving product reliability. The multi-line, multi-layer extrusion device realizes closed-loop automatic control of the diameter of the product 300 through the traction device 2, the diameter measuring device 3 and the control system 400, reducing manual intervention and improving the degree of automation and production efficiency in the production process. When the production demand is for multiple products 300 of different models and sizes, specific parameter signals are input to the traction device 2 and the diameter measuring device 3 on each production line 100 to control the simultaneous production of products 300 of different specifications and sizes, thereby realizing precise control of the production of different products 300. When the production demand is for multiple products 300 of the same model and size, the same parameter signal is input to the traction devices 2 and the diameter measuring devices 3 on multiple production lines 100. The closed-loop automatic control of the diameter of the product 300 is carried out through the traction device 2, the diameter measuring device 3 and the control system 400 to ensure the consistency and efficiency of the product 300 and guarantee the dimensional accuracy and product quality.

[0035] This utility model proposes an embodiment, please refer to Figures 1 to 4 A flow valve 61 for controlling the flow of raw materials is provided on the output pipeline 52 , and the flow valve 61 is connected to the control system 400 by signal.

[0036] In this embodiment, the flow valve 2 is connected to the control system 400 signal, receives instructions from the control system 400, and controls and adjusts the flow of raw materials from the diverter 5 into the head 1 according to production requirements. The multi-line multi-layer extruder has multiple feeding devices 200, each feeding device 200 has a diverter 5, each diverter 5 is provided with multiple output pipes 52, and each output pipe 52 is provided with a flow valve 61. The flow valve 61 is set at a position near the head 1 of the output pipe 52 to accurately control the flow of each raw material entering the head 1. Each flow valve 61 can be independently controlled to adjust the supply of raw materials for different layers inside different heads 1, and can adapt to the production requirements of different products or different layer structures. When producing a multi-layer structure product 300, the flow valve 61 can ensure that the proportion of raw materials input in each layer is accurate enough to achieve a uniform layer thickness. When different materials need to be co-extruded to form a composite product, the flow valve 61 can accurately control the flow of each material to ensure the uniformity and performance of the product 300. It is understandable that when the production demand is for multiple products 300 of the same model and size, the multiple output pipes 52 of the same feeding device 200 are provided with multiple flow valves 61 near different heads 1. The control system 400 regulates the flow valves 61 so that the flow of raw materials flowing from the same extruder 4 into different heads 1 is evenly distributed, ensuring the consistency of the products 300 produced by multiple production lines 100. At the same time, the provision of the flow valves 61 can quickly adjust the input raw materials, promptly change the type of product to be produced, efficiently adapt to different production needs, and improve production flexibility. The control system 400, the flow valves 61, the traction device 2 and the diameter measuring device 3 are used in conjunction to precisely regulate the specifications and dimensions of the product 300, further ensuring that the products 300 of the multi-line, multi-layer extrusion device meet production needs.

[0037] This utility model proposes an embodiment, please refer to Figure 5 and Figure 6 The feeding device 200 also includes multiple control valves 62 and multiple motors. Each output pipe 52 is provided with a control valve 62, and each control valve 62 is connected to a motor; the motor is signal-connected to the control system 400; the head 1 is provided with a pressure sensor 63 for detecting the feed pressure; the pressure sensor 63 is signal-connected to the control system 400.

[0038] Specifically, this embodiment utilizes a control valve 62, a motor, and a pressure sensor 63 to precisely control the amount of raw material delivered from the feeding device 200 to the die head 1. The control valve 62 is connected to the motor, which is in turn connected to the control system 400. The motor receives commands from the control system 400 to regulate the control valve 62, adjusting the flow of raw material from the diverter 5 into the die head 1 according to production requirements. The control valve 62 is positioned near the die head 1 on the output pipe 52 to control the supply of raw material. As will be appreciated, this multi-line, multi-layer extruder comprises multiple motors, each connected to a control valve 62. The motors adjust the opening and closing of the control valves 62 using signals from the control system 400, thereby controlling the flow of raw material. The motors' rapid response enables the control system 400 to rapidly adjust the raw material flow rate to accommodate changes in the production process. As will be appreciated, the motor's speed and direction of rotation can be adjusted to precisely control the control valve 62. A pressure sensor 63 is provided at the feed inlet 12 of the die head 1 to detect feed pressure. The pressure sensor 63 is connected to the control system 400 for signal communication, and monitors and provides feedback in real time on the pressure changes of the raw materials flowing through the feed port 12. After receiving the monitoring data from the pressure sensor 63, the control system 400 feeds back the signal to the motor according to production needs to further precisely control the control valve 62, thereby achieving closed-loop control of the raw material supply, improving production efficiency and product precision, and achieving a high degree of automation. At the same time, it can avoid raw material waste by precisely controlling the feed amount, thereby achieving efficient production. It is understandable that each feeding device 200 has a diverter, and each diverter 5 is provided with multiple output pipes 52, each output pipe 52 is provided with a control valve 62, and each control valve 62 can be independently controlled to adjust the raw material supply of different layers within different heads 1, so as to adapt to the production requirements of different products or different layer structures. Each head 1 is provided with at least one pressure sensor 63 to ensure that the feed pressure of each head 1 can be independently monitored and adjusted to adapt to different production conditions. Preferably, each feed port 12 is provided with a pressure sensor 63 to further ensure the uniformity and uniformity of the product 300. When producing a multi-layer product 300, the control valve 62 and the pressure sensor 63 cooperate with each other to ensure that the ratio of raw materials input to each layer is accurate enough to achieve a uniform layer thickness; when different materials need to be co-extruded to form a composite product, the flow rate of each material can also be accurately controlled to ensure the uniformity and performance of the product 300.It can be understood that when the production demand is multiple same models and same sizes of products 300, multiple output pipes 52 of the same feeding device 200 are provided with multiple control valves 62 at positions close to different machine heads 1, the control system 400 regulates the motor, and then accurately controls the control valve 62, so that the material flow flowing into different machine heads 1 from the same extruder 4 is evenly distributed, and at the same time, the pressure sensor 63 feeds back the monitoring value to the control system 400 for closed-loop regulation, to ensure the consistency of the products 300 produced by multiple production lines 100. At the same time, the control valve 62 can quickly adjust the input material and timely change the type of product to be produced, efficiently adapt to different production demands and improve the flexibility of production. The control system 400, the motor, the control valve 62, the pressure sensor 63, the traction device 2 and the diameter measuring device 3 are used in cooperation to accurately regulate the size of the product 300, further ensuring that the product 300 of the multi-line multi-layer extrusion device meets the production demand.

[0039] The utility model proposes an embodiment, please refer to Figures 1 to 6 Two parallelly arranged production lines 100, three feeding devices 200 and a control system 400, each feeding device 200 is connected with two production lines 100;Machine head 1 is equipped with three feed ports 11 and an extrusion port 12;The flow divider 5 is Y-shaped structure, including an input pipe 51 and two output pipes 52, the input pipe 51 is communicated with two output pipes 52, and the ends of two output pipes 52 away from the input pipe 51 are connected with machine heads 1 on two production lines 100 respectively;Three feed ports 11 on each machine head 1 are connected with the flow divider 5 of three feeding devices 200 respectively.

[0040] Specifically, the multi-line multi-layer extrusion device is used to realize double-line three-layer production. The device includes two parallelly arranged production lines 100, each production line 100 includes a machine head 1, and each machine head 1 has three feed ports 11 and an extrusion port 12. The device includes three feeding devices 200, each feeding device 200 includes an extruder 4 and a flow divider 5. The flow divider 5 is Y-shaped structure, has an input pipe 51 connected with the extruder 4, two output pipes 52 connected with the machine head 1, and the two output pipes 52 of the flow divider 5 are connected to the machine head 1 of different production lines 100. Three different feed ports 11 of each machine head 1 are connected with three different flow dividers 5, and are communicated to three extruders 4 for feeding. The raw materials flow out of the three extruders 4, pass through the three input pipes 51, are divided to the six output pipes 52, and then enter the two machine heads 1 respectively. It can be understood that the three feeding devices 200 are connected with the machine heads 1 of the two production lines 100 through the three flow dividers 5 to realize double-line production;Each machine head 1 has three layers of rubber material channels, the three layers of rubber material channels are communicated with the three flow dividers 5 through the feed ports 11, and each machine head 1 is connected with three feeding devices 200 to realize three-layer production.

[0041] For further information, please refer to Figures 1 to 6 , the products 300 on the two production lines 100 have the same outer diameter.

[0042] Specifically, the control systems 400 and the traction devices 2 on the two production lines 100 are set with the same parameters according to production requirements, so that the traction devices 2 on the two production lines 100 have the same traction speed, thereby controlling the extrusion diameters of the two products 300 to be the same. At the same time, the outer diameters of the two products 300 are monitored by two diameter measuring devices 3, and the measurement data is fed back to the control system 400. If there is a deviation between the two diameter data, the control system 400 will send a signal to adjust the traction speed to correct the deviation. At the same time, the control valve 62 and the pressure sensor 63 can be used to accurately control the amount of raw materials input into the two production lines 100. The three feed ports 12 of each die head 1 are equipped with a pressure sensor 63, and the six output pipes 52 are respectively equipped with a control valve 62, so that the raw material flow from the same extruder 4 into the two die heads 1 is evenly distributed. At the same time, the pressure sensor 63 feeds the monitoring value back to the control system 400 for closed-loop regulation to ensure the consistency of the products 300 produced by the two production lines 100. The control system 400, motor, control valve 62, pressure sensor 63, traction device 2, and diameter measuring device 3 cooperate to precisely control the dimensions of the two products 300, further ensuring that the two products 300 extruded in the dual-line, three-layer process have the same outer diameter. It is understood that the flow valve 61 can also be used to control the raw material input.

[0043] For further information, please refer to Figures 1 to 6 The products 300 on the two production lines 100 have a three-layer structure. The machine head 1 has an inner layer rubber material channel, a middle layer rubber material channel and an outer layer rubber material channel. The inner layer rubber material channel, the middle layer rubber material channel and the outer layer rubber material channel are connected to three feeding devices 200 through three feeding ports 11.

[0044] Specifically, the head 1 has a casing, in which an inner layer rubber channel, a middle layer rubber channel, an outer layer rubber channel and a central through hole for the conductor to pass through are provided. The raw materials flow out from three feeding devices 200 and enter the inner layer rubber channel, the middle layer rubber channel and the outer layer rubber channel through three feeding ports 11 respectively, and are sequentially coated on the outside of the conductor to form a product 300 with a three-layer structure, which is extruded from the extrusion port 12.

[0045] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0046] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention.

Claims

1. A multi-line multi-layer extrusion device, characterized in that: include: A plurality of production lines (100) arranged in parallel, a plurality of feeding devices (200) and a control system (400), wherein each of the feeding devices (200) is connected to the plurality of production lines (100); Each of the production lines (100) is provided with a die (1), and the die heads (1) on the multiple production lines (100) are arranged in parallel, and the die heads (1) are provided with multiple feed ports (11) and at least one extrusion port (12). The production line (100) further comprises a traction device (2) for controlling the flow direction and flow rate of the product (300), and the traction device (2) is connected to the control system (400) by signal. The production line (100) further comprises a diameter measuring device (3) for measuring the diameter of the product (300), and the diameter measuring device (3) is connected to the control system (400) by signal. The feeding device (200) is used to provide raw materials, and includes an extruder (4) and a splitter (5), wherein the splitter (5) includes an input pipe (51) and a plurality of output pipes (52), wherein the input pipe (51) is connected to the plurality of output pipes (52), wherein one end of the input pipe (51) away from the output pipe (52) is connected to the extruder (4), and one end of the plurality of output pipes (52) away from the input pipe (51) is respectively connected to the plurality of die heads (1); The multiple feed ports (11) on each machine head (1) are respectively connected to the diverters (5) of different feeding devices (200).

2. The multi-line multi-layer extrusion device according to claim 1, characterized in that: The output pipeline (52) is provided with a flow valve (61) capable of controlling the flow of the raw materials, and the flow valve (61) is connected to the control system (400) by signal.

3. The multi-line multi-layer extrusion device according to claim 1, characterized in that: The feeding device (200) further comprises a plurality of control valves (62) and a plurality of motors, wherein each of the output pipes (52) is provided with a control valve (62), and each of the control valves (62) is connected to a motor; the motors are connected to the control system (400) by signal; the machine head (1) is provided with a pressure sensor (63) for detecting the feed pressure; the pressure sensor (63) is connected to the control system (400) by signal.

4. The multi-line, multi-layer extrusion device according to any one of claims 1 to 3, characterized in that: The system comprises: two production lines (100) arranged in parallel, three feeding devices (200) and a control system (400), wherein each feeding device (200) is connected to the two production lines (100); The die head (1) is provided with three feed ports (11) and one extrusion port (12); The diverter (5) is a Y-shaped structure, comprising an input pipe (51) and two output pipes (52), wherein the input pipe (51) is connected to the two output pipes (52), and one end of the two output pipes (52) away from the input pipe (51) is respectively connected to the heads (1) on the two production lines (100); The three feed ports (11) on each machine head (1) are respectively connected to the diverters (5) of the three feeding devices (200).

5. The multi-line multi-layer extrusion device according to claim 4, characterized in that: The products (300) on the two production lines (100) have the same outer diameter.

6. The multi-line multi-layer extrusion device according to claim 4, characterized in that: The products (300) on the two production lines (100) have a three-layer structure, and the machine head (1) has an inner layer rubber material channel, a middle layer rubber material channel and an outer layer rubber material channel, and the inner layer rubber material channel, the middle layer rubber material channel and the outer layer rubber material channel are connected to the three feeding devices (200) through the three feeding ports (11).

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