Transparent plastic pipe extrusion production line

Through the setting space composed of the die core and the setting hole and the cooling and heating treatment, the problems of uneven thickness and large energy consumption of transparent pipes are solved, and the production of transparent hoses with uniform thickness and good toughness is achieved.

CN223278508UActive Publication Date: 2025-08-29广东华声电器实业有限公司
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Patent Information

Application Number
CN202422325837.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-24
Publication Date
2025-08-29
Estimated Expiration
2034-09-24

AI Technical Summary

Technical Problem

The unstable air pressure during the extrusion of existing transparent tubes leads to uneven thickness, unstable toughness, and high energy consumption.

Method used

The molding space consisting of a mold core and a fixed hole is formed, combined with the design of the cooling tank, water-absorbing heating box and winding heating box, the uniform thickness and toughness of the hose are ensured through cooling and heating treatment, and the extended section stabilizes the flow cavity to avoid air pressure injection.

Benefits of technology

It achieves uniform thickness of transparent hose, consistent light transmission effect, good toughness and elasticity, and energy saving.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a transparent plastic pipe extrusion production line, which relates to the technical field of plastic extrusion molding, and comprises an extrusion die, an extrusion die core, an outlet die sleeve, an extrusion die core, an outlet die sleeve, a support and a support, the two cooling tanks sequentially comprise a first cooling tank on the rear side and a second cooling tank on the front side; the water absorption heating box is positioned between the first cooling tank and the second cooling tank; the winding heating box is connected with the output side of the second cooling tank; raw materials are formed in the shaping space in the extrusion die and then continuously output from the shaping hole to form a long hose, and the hose is cooled in the first cooling tank, heated and dried through the water absorption heating box and then passes through the extension plate to ensure the straightening effect of the hose; the hose is heated through the winding heating box after being cooled in the second cooling tank, the winding wheel set winds the hose to ensure the toughness and elasticity of the hose during winding, and the overall thickness distribution of the hose is more uniform.
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Description

Technical Field

[0001] The utility model relates to the technical field of plastic extrusion molding, in particular to a transparent plastic tube extrusion production line. Background Art

[0002] Extruding transparent tubing previously required injecting air pressure to create a hollow interior. However, this unstable air pressure resulted in uneven thickness in some areas of the tubing, leading to unstable toughness and elasticity. Furthermore, the air pressure injection process consumed considerable energy, making it less energy-efficient. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems in the prior art. To this end, the utility model proposes a transparent plastic tube extrusion production line.

[0004] According to the embodiment of the utility model, the transparent plastic tube extrusion production line includes: an extrusion mold, which is located at the output side of the extruder, and the extrusion mold includes a mold core and an outlet mold sleeve, and the outlet mold sleeve has a shaping hole. The mold core sleeve is inserted into the shaping hole, and a space is left between the outer wall of the mold core and the inner wall of the shaping hole as a shaping space. After the raw material is formed into a hose in the shaping space, it is output from the shaping hole and pulled forward for transmission; two cooling troughs, which include a first cooling trough on the rear side and a second cooling trough on the front side in sequence, and the input side of the first cooling trough is connected to the output side of the extruder; a water absorption heating box, which is located between the first cooling trough and the second cooling trough, and the water absorption heating box is equipped with a water absorption device and a heater; an extension plate, which is located between the water absorption heating box and the second cooling trough; a winding heating box, which is connected to the output side of the second cooling trough, and the winding heating box is equipped with a winding wheel group and a heater.

[0005] According to some embodiments of the present invention, the mold core sequentially includes a front shaping section and an extension section, the shaping section extends into the shaping hole, and the extension section extends out of the shaping hole.

[0006] According to some embodiments of the present invention, the extrusion die includes a fixed die ring on the front side, the fixed die ring has a fixed hole, and the inner wall of the fixed hole is connected to the outer wall of the outlet die sleeve.

[0007] According to some embodiments of the present invention, the extrusion mold includes a fixed bottom cover on the rear side, and a fixed recess is provided on the fixed bottom cover. The mold core includes a positioning boss on the rear side, and the positioning boss is inserted into the fixed recess.

[0008] According to some embodiments of the present invention, the first cooling trough includes a water filling area in the middle and water isolation areas on the front and rear sides. A partition frame is provided between the water filling area and the water isolation area, and the hose passes through the partition frame and extends into or out of the water filling area.

[0009] According to some embodiments of the present invention, the partition frame is provided with partition cotton, and the partition cotton is provided with a partition cotton through hole, and the hose passes through the partition cotton through hole and extends into or out of the water storage area.

[0010] According to some embodiments of the present invention, the water absorption device is water-absorbing cotton, and the upper side of the water-absorbing cotton has a water-absorbing convex surface, and the hose entering the water absorption heating box can stick to the water-absorbing convex surface.

[0011] According to some embodiments of the present invention, a detection probe is provided beside the extension plate, and the detection probe faces the hose passing through the extension plate.

[0012] According to some embodiments of the present invention, a pressure strip is provided on the second cooling groove, and the pressure strip can press the hose passing through the second cooling groove into the liquid in the second cooling groove.

[0013] According to some embodiments of the present invention, the winding wheel assembly includes a first multi-groove wheel and a second multi-groove wheel, a wire outlet is provided on the winding heating box, and a wire outlet guide wheel is provided on the outside of the winding heating box.

[0014] According to the transparent plastic tube extrusion production line of the embodiment of the present invention, there are at least the following technical effects: the raw material is formed in the shaping space in the extrusion die, and then continuously output from the shaping hole to form a long hose. After the hose is cooled in the first cooling trough, it is heated and dried in a water absorption heating box and then passed through an extension plate to ensure the effect of the hose being straightened; after the hose is cooled in the second cooling trough, it is heated in a winding heating box, and the winding wheel group winds the hose to ensure the toughness and elasticity of the hose when it is wound, and the overall thickness distribution of the hose is more uniform; during the continuous output of the hose, the airflow between the extension section and the inner cavity of the hose is sufficient to stabilize the flow and make the inner cavity of the hose smoother, so that there is no need for air injection to ensure that the thickness of the transparent hose is more uniform, which also makes the light transmission effect of the hose more uniform.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1This is a top view of the transparent plastic tube extrusion production line of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the extrusion die in the utility model;

[0019] Figure 3 It is a top view of the first cooling tank in the utility model;

[0020] Figure 4 It is a structural diagram of the water absorption and heating box in the utility model;

[0021] Figure 5 It is a structural diagram of the first cooling tank in the utility model;

[0022] Figure 6 It is a structural diagram of the winding heating box in the utility model.

[0023] Reference numerals:

[0024] Extruder 100; extrusion die 200, die core 210, positioning boss 211, contraction section 212, shaping section 213, extension section 214, outlet die sleeve 220, shaping hole 221, side die sleeve 230, feed hole 231, fixed die ring 240, fixing hole 241, fixed bottom cover 250, fixed recess 251; two cooling troughs 300, first cooling trough 310, water filling area 311, water isolation area 312, partition frame 313, partition cotton 314, partition cotton through hole 315, second cooling groove 320, pressure strip 321; water absorption and heating box 400, water absorption device 410, water absorption convex surface 411; extension plate 500, detection probe 510; winding and heating box 600, winding wheel group 610, first multi-groove wheel 611, second multi-groove wheel 612, wire outlet 620, wire outlet guide wheel 630; hose 700. DETAILED DESCRIPTION

[0025] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0026] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0027] In the description of this utility model, "a plurality" means more than two, and "greater than," "less than," "exceed," etc. are understood to exclude the number itself. The use of "first" or "second" is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number or order of the technical features indicated.

[0028] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0029] Reference below Figure 1 and Figure 2 The transparent plastic tube extrusion production line according to the embodiment of the present invention is described.

[0030] like Figure 1 and Figure 2 As shown, the transparent plastic tube extrusion production line according to an embodiment of the present invention includes an extruder 100, an extrusion die 200, two cooling troughs 300, a water absorption heating box 400, an extension plate 500, and a winding heating box 600.

[0031] The extrusion die 200 is located at the output side of the extruder 100. The extrusion die 200 includes a mold core 210 and an outlet mold sleeve 220. The outlet mold sleeve 220 has a shaping hole 221. The mold core 210 is inserted into the shaping hole 221. A space is left between the outer wall of the mold core 210 and the inner wall of the shaping hole 221 as a shaping space. After the raw material is formed into a hose 700 in the shaping space, it is output from the shaping hole 221 and pulled forward. The two cooling grooves 300 include a first cooling groove 310 at the rear and a second cooling groove 311 at the front. The second cooling trough 320 on the side, the input side of the first cooling trough 310 is connected to the output side of the extruder 100; the water absorption and heating box 400 is located between the first cooling trough 310 and the second cooling trough 320, and the water absorption and heating box 400 is equipped with a water absorption device 410 and a heater; the extension plate 500 is located between the water absorption and heating box 400 and the second cooling trough 320; the winding heating box 600 is connected to the output side of the second cooling trough 320, and the winding heating box 600 is equipped with a winding wheel group 610 and a heater.

[0032] For example, Figure 1 and Figure 2As shown, the extrusion die 200 is located on the output side of the extruder 100. That is, the raw material produced by the extruder 100 is formed into a hose from the extrusion die 200 on the output side. The extrusion die 200 includes a core 210 and an outlet die sleeve 220. The outlet die sleeve 220 has a shaped hole 221. The core 210 is inserted into the shaped hole 221, leaving a space between the outer wall of the core 210 and the inner wall of the shaped hole 221 as a shaped space. After the raw material is formed into the hose 700 in the shaped space, it is output from the shaped hole 221 and pulled forward. After the raw material is injected into the extrusion die 200, the core 210 shapes the inner cavity of the hose. At the same time, the entire hose is formed in the shaped space between the outer wall of the core 210 and the inner wall of the shaped hole 221, and then continuously output from the shaped hole 221 to form a long hose.

[0033] Reference Figure 1 , two cooling troughs 300, including a first cooling trough 310 on the rear side and a second cooling trough 320 on the front side, the input side of the first cooling trough 310 is connected to the output side of the extruder 100, and the hose is cooled twice in sequence through the first cooling trough 310 and the second cooling trough 320. The water absorption and heating box 400 is located between the first cooling trough 310 and the second cooling trough 320. The water absorption and heating box 400 is equipped with a water absorption device 410 and a heater. The water absorption device 410 absorbs the water on the hose during cooling, and at the same time heats and dries it through the heater. The extension plate 500 is located between the water absorption and heating box 400 and the second cooling trough 320. The hose passes through the upper surface of the extension plate 500 during the transmission process to ensure that the hose is straightened, and it is also convenient for workers to check the preparation of the hose. The winding and heating box 600 is connected to the output side of the second cooling tank 320. The winding and heating box 600 is equipped with a winding wheel set 610 and a heater. The winding wheel set 610 winds the hose to ensure the toughness and elasticity of the hose, and heats and dries it at the same time.

[0034] During actual operation, the raw materials prepared by the extruder 100 are injected into the extrusion die 200 to form a hose that is output from the forming hole 221 on the extrusion die 200. The hose passes through the first cooling trough 310, the water absorption and heating box 400, the extension plate 500, the second cooling trough 320, and the winding and heating box 600 in sequence. After the hose is cooled for the first time in the first cooling trough 310, it absorbs water and heats and dries in the water absorption and heating box 400, and is then stretched and extended on the extension plate 500 to ensure that the hose is straightened when in use. Then, after the hose is cooled for the second time in the second cooling trough 320, it is wound by the winding wheel assembly 610 of the winding and heating box 600, and is heated and dried by the heater at the same time to ensure that the hose has sufficient toughness and elasticity when wound. After the above processing is completed, the hose can be wound and cut.

[0035] In some embodiments of the present invention, referring to Figure 2The mold core 210 sequentially includes a front shaping section 213 and an extension section 214. The shaping section 213 extends into the shaping hole 221, while the extension section 214 extends out of the shaping hole 221. After the raw material is formed into the hose 700 in the shaping space, it is discharged from the shaping hole 221 and pulled forward. When the hose is just emerging from the shaping hole 221, the extension section 214 is located within the hose lumen, ensuring a smoother internal shape. This eliminates the need for air injection and ensures a more uniform thickness of the transparent hose, thereby enhancing the hose's light transmission. It should be noted that the extension section 214 in the above process does not necessarily need to be in contact with the hose lumen. During the continuous hose delivery process, the airflow between the extension section 214 and the hose lumen is sufficient to stabilize the flow and smooth the hose lumen.

[0036] In some embodiments of the present invention, the extrusion die 200 further includes a side sleeve die 230, which is provided with a feed hole 231, through which the raw material is injected into the extrusion die 200. The core 210 includes a rearward constriction 212. The cross-sectional area of ​​the constriction 212, perpendicular to the front-to-back extension line, decreases from front to back. A space is left between the inner wall of the side sleeve die 230 and the outer wall of the constriction 212 as a feed space. The design of the constriction 212 ensures that the feed space can accommodate a relatively large amount of raw material, thereby ensuring a tighter and stronger hose when the raw material is squeezed into the shaping space.

[0037] Furthermore, the feed hole 231 can be provided on the side wall or the rear side of the side sleeve mold 230 .

[0038] In some specific embodiments of the present invention, the shaping space is a vertical cylindrical cavity, that is, the outer wall of the mold core 210 is cylindrical, and the inner wall of the shaping hole 221 is also cylindrical.

[0039] In some specific embodiments of the present invention, the shaping space includes a vertical cylindrical cavity on the front side and a truncated cone-shaped cavity on the rear side, that is, the front outer wall of the mold core 210 is cylindrical, the rear outer wall of the mold core 210 is truncated cone-shaped, the front side of the inner wall of the shaping hole 221 is cylindrical, and the rear outer wall of the inner wall of the shaping hole 221 is truncated cone-shaped.

[0040] In some specific embodiments of the present invention, the extension section 214 is in the shape of a truncated cone, wherein the hypotenuse of the extension section 214 is a concave arc.

[0041] In some embodiments of the present invention, the extrusion die 200 includes a front fixed die ring 240 having a fixing hole 241 , the inner wall of the fixing hole 241 is connected to the outer wall of the outlet die sleeve 220 , thereby facilitating the fixation of the outlet die sleeve 220 .

[0042] Furthermore, the die core 210 is inserted into the output side of the extruder 100 , and the outlet die sleeve 220 is installed on the output side of the extruder 100 and fixed.

[0043] In some embodiments of the present invention, the extrusion mold 200 includes a fixed bottom cover 250 on the rear side, and a fixed recess 251 is provided on the fixed bottom cover 250 . The mold core 210 includes a positioning boss 211 on the rear side, and the positioning boss 211 is inserted into the fixed recess 251 .

[0044] In some specific embodiments of the present invention, an inner cavity of the extrusion mold 200 is formed between the fixed bottom cover 250, the side sleeve mold 230, and the outlet mold sleeve 220 to ensure that the raw material does not leak out of the extrusion mold 200, and the mold core 210 is inserted into the inner cavity of the above-mentioned extrusion mold 200.

[0045] Reference Figure 3 In some embodiments of the present invention, the first cooling trough 310 includes a central water-filling area 311 and two front and rear water-isolating areas 312. A partition frame 313 is provided between the water-filling area 311 and the water-isolating areas 312. A hose passes through the partition frame 313 and extends into or out of the water-filling area 311. Water overflowing from the water-filling area 311 can flow into the water-isolating areas 312, preventing it from directly overflowing the first cooling trough 310. This first cooling trough 310 is suitable for high-flow cooling, meaning that the cooling water flow rate in the first cooling trough 310 is increased.

[0046] In some specific embodiments of the present invention, a drainage pipe is provided on the lower side of the water isolation area 312 .

[0047] In some embodiments of the present invention, a separator 314 is provided on the separator frame 313, and a separator through-hole 315 is provided on the separator 314. The hose 700 extends into or out of the water storage area 311 through the separator through-hole 315. Thus, when the hose passes through the water storage area 311, the separator 314 can separate the water in the water storage area 311 from the water isolation area 312. Furthermore, the separator 314 absorbs water and can also wet the hose, ensuring that friction between the hose and the separator through-hole 315 of the separator 314 does not damage the hose's surface.

[0048] Reference Figure 4 In some embodiments of the present invention, the water absorption device 410 is a water-absorbing cotton having a water-absorbing convex surface 411 on its upper side. The hose 700 passing through the water-absorbing convex surface 411 and entering the water absorption heating box 400 can stick to the water-absorbing convex surface 411. The convex surface design of the water-absorbing convex surface 411 ensures that the hose and the water-absorbing cotton are in full contact.

[0049] In some embodiments of the present invention, the heater of the water absorption heating box 400 is a resistive heater.

[0050] In some embodiments of the present invention, a detection probe 510 is provided next to the extension plate 500 , and the detection probe 510 faces the hose passing through the extension plate 500 , so that the surface condition of the hose can be detected when the hose passes through the extension plate 500 .

[0051] Reference Figure 5 In some embodiments of the present invention, a pressure strip 321 is provided on the second cooling trough 320. The pressure strip 321 can press the hose passing through the second cooling trough 320 into the liquid in the second cooling trough 320. That is, the pressure strip 321 is used to press the hose passing through the second cooling trough 320 into the liquid in the second cooling trough 320. The above-mentioned second cooling trough 320 is suitable for static water cooling, that is, the water in the second cooling trough 320 is not required to flow, and a modification solution can be added to the second cooling trough 320 to modify the hose immersed in the liquid in the second cooling trough 320.

[0052] Reference Figure 6 In some embodiments of the present invention, the winding wheel assembly 610 includes a first multi-grooved wheel 611 and a second multi-grooved wheel 612. The winding and heating box 600 is provided with a wire outlet 620, and a wire outlet guide wheel 630 is provided outside the winding and heating box 600. After entering the winding and heating box 600, the hose is wound multiple times between the first multi-grooved wheel 611 and the second multi-grooved wheel 612. This ensures that the hose is fully wound repeatedly and remains in the winding and heating box 600 for a sufficient period of time to be heated and dried. The heated hose is then discharged from the wire outlet 620 and collected under the guidance of the wire outlet guide wheel 630.

[0053] In some embodiments of the present invention, the heater of the winding heating box 600 is a resistive heater.

[0054] Other structures and operations of the air conditioner according to the embodiment of the present invention are well known to those skilled in the art and will not be described in detail here.

[0055] Reference below Figure 1 and Figure 2 The transparent plastic tube extrusion production line according to the embodiment of the present invention is described in detail with a specific embodiment. It is worth noting that the following description is only an exemplary description and is not a specific limitation of the present invention.

[0056] like Figure 1 and Figure 2 As shown, the transparent plastic tube extrusion production line of the embodiment of the present invention includes, from back to front, an extruder 100, a first cooling trough 310, a water absorption heating box 400, an extension plate 500, a second cooling trough 320, and a winding heating box 600.

[0057] The extruder 100 is a single-screw extruder, and the screw extends in the left and right directions, wherein the output side of the extruder 100 is on the left. The raw material used is PVC, and the prepared hose 700 is a PVC hose.

[0058] The extrusion die 200 is installed on the output side of the extruder 100. The extrusion die 200 includes a core die 210, an outlet die sleeve 220, a side die sleeve 230, two fixed die rings 240, and a fixed bottom cover 250. The core die 210 includes a positioning boss 211, a contraction section 212, a shaping section 213, and an extension section 214. The outlet die sleeve 220 is provided with a shaping hole 221. The side die sleeve 230 is provided with a feed hole 231. The fixed die ring 240 is provided with a fixing hole 241. The fixed bottom cover 250 is provided with a fixing recess 251. The two fixed die rings 240 are located on the front and back sides of the extrusion die 200, respectively fixing the outlet die sleeve 220 and the fixed bottom cover 250.

[0059] The cooling trough 300 includes a first cooling trough 310 and a second cooling trough 320. The first cooling trough 310 is provided with a water filling area 311, a water isolation area 312, and a partition frame 313. A partitioning pad 314 is provided on the partition frame 313. The partitioning pad 314 is provided with a partitioning pad through hole 315. The second cooling trough 320 is provided with a press strip 321.

[0060] The water absorption and heating box 400 is provided with a water absorption device 410 and a heater. The water absorption device 410 is provided with a water absorption convex surface 411.

[0061] A detection probe 510 is provided next to the extension plate 500 .

[0062] The winding and heating box 600 is provided with a winding wheel assembly 610 and a heater. A wire guide wheel 630 is provided outside the winding and heating box 600. The winding wheel assembly 610 includes a first multi-groove wheel 611 and a second multi-groove wheel 612.

[0063] According to the transparent plastic tube extrusion production line of the embodiment of the present invention, by being set up in this way, at least the following effects can be achieved: the raw material is formed in the shaping space in the extrusion die 200, and then continuously output from the shaping hole 221 to form a long hose; during the continuous output of the hose, the airflow between the extension section 214 and the inner cavity of the hose is sufficient to stabilize the flow and make the inner cavity of the hose smoother, so that the thickness of the transparent hose is more uniform without the need for air injection, and the light transmission effect of the hose is more uniform; after the hose is cooled in the first cooling trough 310, it is heated and dried in the water absorption heating box 400 and then passed through the extension plate 500 to ensure the effect of the hose being straightened; after the hose is cooled in the second cooling trough 320, it is heated in the winding heating box 600, and the winding wheel group 610 winds the hose to ensure the toughness and elasticity of the hose when it is wound.

[0064] Throughout this specification, references to the terms "some embodiments" or "it is contemplated that" indicate 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 these 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.

[0065] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A transparent plastic tube extrusion production line, characterized in that: include: An extrusion die (200) is located at the output side of the extruder (100). The extrusion die (200) includes a die core (210) and an outlet die sleeve (220). The outlet die sleeve (220) has a shaping hole (221). The die core (210) is inserted into the shaping hole (221). A space is left between the outer wall of the die core (210) and the inner wall of the shaping hole (221) as a shaping space. After the raw material is formed into a hose (700) in the shaping space, it is output from the shaping hole (221) and pulled forward for transmission. Two cooling troughs (300), comprising a first cooling trough (310) on the rear side and a second cooling trough (320) on the front side, wherein the input side of the first cooling trough (310) is connected to the output side of the extruder (100); A water absorption and heating box (400) is located between the first cooling trough (310) and the second cooling trough (320), wherein the water absorption and heating box (400) has a water absorption device (410) and a heater built therein; An extension plate (500) is located between the water absorption and heating box (400) and the second cooling trough (320); The winding heating box (600) is connected to the output side of the second cooling tank (320), and the winding heating box (600) is equipped with a winding wheel group (610) and a heater.

2. The transparent plastic tube extrusion production line according to claim 1, characterized in that: The mold core (210) comprises a front shaping section (213) and an extension section (214) in sequence, wherein the shaping section (213) extends into the shaping hole (221), and the extension section (214) extends out of the shaping hole (221).

3. The transparent plastic tube extrusion production line according to claim 1, characterized in that: The extrusion die (200) includes a fixed die ring (240) on the front side. The fixed die ring (240) has a fixed hole (241). The inner wall of the fixed hole (241) is connected to the outer wall of the outlet die sleeve (220).

4. The transparent plastic tube extrusion production line according to claim 1, characterized in that: The extrusion die (200) includes a fixed bottom cover (250) at the rear side, a fixed recess (251) is provided on the fixed bottom cover (250), and the die core (210) includes a positioning boss (211) at the rear side, and the positioning boss (211) is inserted into the fixed recess (251).

5. The transparent plastic tube extrusion production line according to claim 1, characterized in that: The first cooling trough (310) comprises a water filling area (311) in the middle and water isolation areas (312) at the front and rear sides. A partition frame (313) is provided between the water filling area (311) and the water isolation area (312). The hose (700) passes through the partition frame (313) and extends into or out of the water filling area (311).

6. The transparent plastic tube extrusion production line according to claim 5, characterized in that: The partition frame (313) is provided with a partition cotton (314), and the partition cotton (314) is provided with a partition cotton through hole (315). The hose passes through the partition cotton through hole (315) and extends into or out of the water storage area (311).

7. The transparent plastic tube extrusion production line according to claim 1, characterized in that: The water absorption device (410) is a water absorption cotton, and the upper side of the water absorption cotton has a water absorption convex surface (411). The hose (700) entering the water absorption heating box (400) can stick to the water absorption convex surface (411).

8. The transparent plastic tube extrusion production line according to claim 1, characterized in that: A detection probe (510) is provided beside the extension plate (500), and the detection probe (510) faces the hose passing through the extension plate (500).

9. The transparent plastic tube extrusion production line according to claim 1, characterized in that: A pressure strip (321) is provided on the second cooling groove (320), and the pressure strip (321) can press the hose passing through the second cooling groove (320) into the liquid in the second cooling groove (320).

10. The transparent plastic tube extrusion production line according to claim 1, characterized in that: The winding wheel assembly (610) comprises a first multi-groove wheel (611) and a second multi-groove wheel (612); a wire outlet (620) is provided on the winding heating box (600); and a wire outlet guide wheel (630) is provided outside the winding heating box (600).