WO2023082491A1 - 一种超薄聚乙烯管道生产设备及生产方法 - Google Patents

一种超薄聚乙烯管道生产设备及生产方法 Download PDF

Info

Publication number
WO2023082491A1
WO2023082491A1 PCT/CN2022/077384 CN2022077384W WO2023082491A1 WO 2023082491 A1 WO2023082491 A1 WO 2023082491A1 CN 2022077384 W CN2022077384 W CN 2022077384W WO 2023082491 A1 WO2023082491 A1 WO 2023082491A1
Authority
WO
WIPO (PCT)
Prior art keywords
pipe
cooling
support
ultra
roller ring
Prior art date
Application number
PCT/CN2022/077384
Other languages
English (en)
French (fr)
Inventor
金崇阳
霍福磊
褚展宙
陈江慧
褚展鹏
刘跃明
Original Assignee
临海伟星新型建材有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 临海伟星新型建材有限公司 filed Critical 临海伟星新型建材有限公司
Publication of WO2023082491A1 publication Critical patent/WO2023082491A1/zh

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/355—Conveyors for extruded articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/86—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the nozzle zone
    • B29C48/87—Cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • B29C48/901—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9115—Cooling of hollow articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/22—Tubes or pipes, i.e. rigid

Definitions

  • the invention relates to an ultra-thin polyethylene pipe production equipment and production method.
  • Polyethylene plastic pipes have a wide range of applications, covering various fields of production and life. Different fields have different requirements, and have different requirements for the specifications and sizes of polyethylene pipes. Among them, polyethylene pipes used for lining steel pipes require large pipe sizes and small wall thicknesses.
  • the purpose of the present invention is to provide a production equipment and production method for ultra-thin polyethylene pipes.
  • An ultra-thin polyethylene pipe production equipment including a cooling spray device, a supporting structure, an extruder arranged in sequence from left to right, a sizing sleeve, several roller ring assemblies arranged at even intervals on the same straight line, and a tractor,
  • the tractor includes an upper crawler and a lower crawler for driving the pipe backwards.
  • the shape of the support structure is divided into a half-shuttle front section and a tubular rear section.
  • the head of the half-shuttle front section is connected to a steel rope and the other end of the steel rope is worn After passing the roller ring assembly and the sizing sleeve, it is connected to the extruder; when the pipe is pulled backward, the pipe is slightly deformed inward and is sleeved on the outside of the support structure, and the inner wall of the pipe contacts the outer wall of the support structure and drives the support structure to move backward , when the steel rope connecting the head of the support structure to the extruder is tightened, the support structure is located between the upper and lower crawlers of the tractor, and the upper and lower crawlers of the tractor clamp the outer wall of the pipe, and the support structure is used to provide sufficient pressure for the pipe.
  • the supporting force prevents the deformation of the pipe during the traction process; wherein, the roller ring assembly is arranged in the spray area of the cooling spray device, and the roller ring assembly is used to provide a rolling limit effect on the outer wall of the pipe being pulled backwards to prevent The pipe is deformed.
  • the support structure is an anti-deformation bracket
  • the anti-deformation bracket includes a support beam and a shell arranged on the support beam, and several sets of support brackets are arranged along the length direction of the support beam, and each set of support brackets includes a There are at least 3 support brackets on the outer periphery of the support beam. The end of the support bracket away from the support beam is fixedly connected to the inner wall of the shell, and the support bracket is fixedly supported between the shell and the support beam; one end of the support beam passes through the head of the shell and is connected to the steel rope.
  • the other end of the rope is connected to the extruder after passing through the roller ring assembly and the sizing sleeve; the outer surface of the shell is smooth, the front section of the shell is in the shape of a half-shuttle, and the rear section of the shell is in the shape of a tube.
  • the half-shuttle at the head of the shell The shape of the pipe can facilitate the pipe to be worn outside the shell, and the inner wall of the pipe can be in contact with the tubular outer wall of the rear section of the shell.
  • the shell, the support bracket and the support beam are all made of aluminum alloy.
  • the barrel of the extruder is connected with an extrusion die head
  • the extrusion die head includes a core die, a die and an annular flow channel arranged between the core die and the die die, and the The outlet of the annular material flow channel is connected to the sizing sleeve, and the die is provided with a cooling jacket near the outlet end.
  • the cooling jacket has an annular cooling flow channel inside, and the cooling jacket is provided with a water inlet and an outlet for connecting the annular cooling flow channel. , so that the cooling liquid can be passed into the cooling jacket, and the extruded pipe can be cooled and shaped in advance.
  • the core mold of the extrusion die head is provided with a suspension ring, and one end of the steel rope is connected to the suspension ring.
  • the roller ring assembly includes a roller ring and three rollers evenly spaced inside the roller ring, and the three rollers arranged inside the roller ring are respectively located at three vertices of a virtual equilateral triangle, and the shape of the rollers is
  • the two ends are thick and the middle is thin, and the thickness of the middle is gradually reduced from the two ends to the center of the symmetrical structure, and the cross section of one side of the roller is arc-shaped to match the outer wall of the pipe;
  • the central area of the roller passes through, and all the rollers on the inside of the roller ring are in contact with the outer wall of the pipe, providing a limit function for the pipe pulled backward, and the pipe pulled backward drives the roller to roll.
  • each threaded hole is threaded to connect a support rod, the other end of the support rod is threaded to a support frame, and a support frame is rotatably connected to a roller.
  • the cooling spray device includes a cooling spray pipe network, and the cooling spray pipe network can spray staggered cooling water columns.
  • the cooling water column is 5 A ⁇ 10° cut angle sprays onto the outer surface of the tubing for cooling.
  • a production method of ultra-thin polyethylene pipe production equipment comprising the following steps:
  • the polyethylene raw material is fed into the extruder after being dried, and the polyethylene raw material is heated and plasticized by the barrel of the extruder and the extrusion die, and then passed between the core die and the die of the extrusion die
  • the annular material channel is extruded and formed, and at the same time, in order to prevent the pipe from being difficult to shape and deform after extrusion, a cooling liquid is passed into the cooling jacket outside the die to perform pre-cooling and shaping of the pipe extrusion;
  • the anti-deformation bracket When the pipe continues to move backwards, the anti-deformation bracket is covered as a whole, and the inner wall of the pipe is in contact with the tubular outer wall of the rear section of the anti-deformation bracket, and the pipe moves backward under the traction of the tractor.
  • the anti-deformation bracket provides support inside the pipe to prevent the pipe from deforming during the traction process, and the steel rope is tight inside the pipe at this time;
  • the extrusion of SDR100 ultra-thin polyethylene pipe can be realized, and the entire production process can be optimized at the same time to prevent deformation of the pipe during shaping, cooling, and traction.
  • a cooling jacket is provided on the outer side of the die close to its outlet end, and by adopting the local cooling technology at the end of the die, it is beneficial to the rapid prototyping of the extruded pipe and prevents the pipe from being deformed.
  • the present invention adopts the roller ring assembly.
  • all the rollers on the inner side of the roller ring are attached to the outer surface of the pipe and roll respectively, replacing sliding friction with rolling friction, which can reduce scratches on the surface of the pipe defects, reduce frictional resistance, and improve production efficiency.
  • the deformation of the ultra-thin polyethylene pipe can also be further prevented.
  • the present invention adopts an internal support traction structure (that is, the anti-deformation bracket provides support force inside the pipe), which can effectively prevent pipe deformation caused by the traction process.
  • Fig. 1 is the extrusion die structure schematic diagram of extruder
  • Fig. 2 is the cross-sectional structure schematic diagram of extrusion die head
  • Fig. 3 is a schematic structural view of the roller ring assembly of the present invention.
  • Fig. 4 is a three-dimensional structural schematic diagram of the anti-deformation bracket of the present invention.
  • Fig. 5 is the front view of the anti-deformation bracket of the present invention.
  • Fig. 6 is a schematic cross-sectional structure diagram of the anti-deformation bracket of the present invention.
  • Embodiment compare Fig. 1-6
  • An ultra-thin polyethylene pipe production equipment including a cooling spray device, a supporting structure, an extruder arranged in sequence from left to right, a sizing sleeve, several roller ring assemblies arranged at even intervals on the same straight line, and a tractor,
  • the tractor includes an upper crawler and a lower crawler for driving the pipe to be pulled backward.
  • the shape of the support structure is divided into a half-shuttle front section and a tubular back section. The head of the half-shuttle front section is connected to a steel rope and the other end of the steel rope passes through the roller ring assembly and the sizing sleeve and is connected to the extruder.
  • the pipe When the pipe When pulling backwards, the pipe is slightly deformed inward and is sleeved on the outside of the support structure.
  • the inner wall of the pipe is in contact with the outer wall of the support structure, and the support structure is driven to move backward through the action of friction.
  • the support structure When the head of the support structure is connected to the extruder When the steel rope is tight, the support structure is just between the upper and lower crawlers of the tractor, and at the same time the upper and lower crawlers of the tractor clamp the outer wall of the pipe, so as to facilitate the backward traction of the pipe.
  • the support structure can provide the pipe with Sufficient supporting force to prevent the pipe from deforming during traction.
  • the roller ring assembly is arranged in the spraying area of the cooling spray device, and the roller ring assembly is used to provide a rolling and limiting effect on the outer wall of the pipe pulled backward to prevent deformation of the pipe.
  • arc-shaped grooves matching the shape of the pipe can be provided on the corresponding surfaces of the upper and lower crawlers.
  • grooves are provided on the surface of the crawler, and the contact area between the pipe and the upper and lower crawlers is increased through the grooves, reducing the excessive concentration of extrusion force on the upper and lower ends of the pipe, and reducing damage to the pipe.
  • the barrel of the extruder is connected with an extrusion die head, and the extrusion die head comprises a core die, a die 1 and an annular flow path arranged between the core die and the die 1, and the annular flow
  • the outlet of the channel is connected to the sizing sleeve.
  • a cooling jacket 2 is provided on the outside of the die 1 close to its outlet end.
  • the inside of the cooling jacket 2 has an annular cooling flow channel 2-2.
  • the cooling jacket 2 is provided with a water inlet 21 and a water outlet, so that the annular cooling flow to the cooling jacket 2
  • the cooling liquid is passed into the channel to cool and shape the extruded pipe in advance.
  • the roller ring assembly includes a roller ring 4 and three rollers 5 evenly spaced inside the roller ring 4.
  • the roller ring assembly is used to provide a rolling limit for the backward-drawn pipe through the three rollers 5 to prevent deformation of the pipe.
  • three rollers 5 are arranged inside the roller ring 4, and the three rollers 5 are respectively located at the three vertices of a virtual equilateral triangle.
  • the shape of the roller 5 is a centrally symmetrical structure with two ends thick and the middle thin, and the thickness gradually decreases from the two ends to the middle.
  • each threaded hole is threaded to connect a support rod, and the other end of the support rod is threaded to connect a support frame, and a support frame rotates Attach a roller 5.
  • the length of the support rod between the support frame and the roller ring 4 can be adjusted through threads, so as to adapt to pipes of different diameters.
  • the present invention adopts rollers 5 inside the support frame, and replaces sliding friction with rolling friction, which can reduce scratch defects on the surface of pipes, reduce frictional resistance, and improve production efficiency.
  • the cooling spray device includes a cooling spray pipe network, which can spray cooling water columns arranged in a staggered manner.
  • the cutting angle is sprayed onto the outer surface of the pipe for cooling.
  • the cooling section of the present invention adopts a water-cooling method to lower the temperature of the pipe material. Since the thickness of the pipe material is small, the concentrated water column will also have a certain influence on the out-of-roundness of the pipe material. Therefore, the water column in the cooling section of the present invention is arranged in a staggered manner, and sprayed onto the surface of the pipe for cooling at a small cutting angle (5-10°), which reduces the impact force of the water flow and further prevents deformation of the pipe.
  • the support structure of the present invention adopts the anti-deformation bracket 7, which can also play a position-limiting role while supporting and guiding the pipe material, and effectively prevent the pipe material from being deformed.
  • the anti-deformation bracket 7 is made of aluminum alloy as a whole, with light weight and smooth overall surface, and the shape of its head is similar to a semi-spindle shape.
  • the anti-deformation bracket 7 includes a support beam 7-3 and a housing 7-1 arranged on the support beam 7-3, and one end of the support beam 7-3 passes through the head of the housing 7-1 and connects Steel rope, the other end of the steel rope passes through the roller ring 4 and the sizing sleeve of the roller ring assembly and is connected with the core mold of the extrusion die head;
  • the rear part of -1 is tubular.
  • each set of support brackets 7-2 is arranged along the length direction of the support beam 7-3, and each set of support brackets 7-2 includes at least 3 support brackets arranged on the outer periphery of the support beam 7-3, and the support brackets are far away from the support beam 7-
  • One end of 3 is fixedly connected to the inner wall of the shell 7-1, so that the support bracket is fixedly supported between the shell 7-1 and the support beam 7-3.
  • the shell 7-1, the support bracket 7-2 and the support beam 7-3 are all made of aluminum alloy.
  • the anti-deformation bracket 7 is Shuttle-shaped and smooth, the pipe naturally includes the anti-deformation bracket 7 in the process of moving backward. Then during the subsequent stable operation, the steel rope is tightened inside the pipe, and the anti-deformation bracket 7 placed between the upper crawler and the lower crawler is fitted in the pipe to provide support for it, while the upper crawler and the lower crawler The outer walls of the upper and lower sides of the pipe are pressed separately, which can further prevent the deformation of the pipe during the traction process.
  • the mandrel of the extrusion die is provided with a suspension ring 3, and one end of the support beam 7-3 is connected to the suspension ring 3 through a steel rope.
  • Adopt production equipment of the present invention comprises the following steps:
  • the polyethylene raw material After the polyethylene raw material is dried, it is fed into the extruder, and the polyethylene raw material is heated and plasticized by the barrel of the extruder and the extrusion die, and then passes through the core mold and the die 1 of the extrusion die. At the same time, in order to prevent the uneven thickness of the pipe after extrusion molding, or even the occurrence of cracks, the cooling liquid is passed into the annular cooling flow channel of the cooling jacket 2 outside the die 1 to speed up the output. The cooling rate of the material can prevent the pipe from collapsing due to gravity and causing the pipe to deform.
  • the anti-deformation bracket 7 When the pipe continues to move backward, the anti-deformation bracket 7 is covered as a whole, and the inner wall of the pipe is in contact with the outer tubular wall at the rear of the shell 7-1 of the anti-deformation bracket 7. During the backward movement of the pipe, the anti-deformation bracket 7 provides a supporting force inside the pipe to prevent the pipe from being deformed during the traction process, and the steel rope is tight inside the pipe at this time;

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

本发明公开了一种超薄聚乙烯管道生产设备及生产方法，本申请装置包括冷却喷淋装置、支撑结构、挤出机、定径套、若干滚轮环组件和牵引机，支撑结构的外形分为半梭形前段和管状后段，半梭形前段的头部通过钢绳与挤出机连接；当管材向后牵引时，管材内壁与支撑结构外壁接触并带动支撑结构向后运动，直至支撑结构头部与挤出机相连的钢绳绷紧时，支撑结构刚好位于牵引机的上下履带之间，支撑结构可以给管材提供足够的支撑力，防止管材在牵引过程中变形；滚轮环组件用以对向后牵引的管材外壁提供滚动限位作用，防止管材发生形变。本发明的生产设备可实现SDR100的超薄聚乙烯管道挤出，同时优化整道生产工序，防止管材在定型、冷却、牵引过程中发生形变。

Description

一种超薄聚乙烯管道生产设备及生产方法 技术领域
本发明涉及一种超薄聚乙烯管道生产设备及生产方法。
背景技术
聚乙烯塑料管道应用范围广泛，涵盖生产生活各个领域，不同领域需求不同，对聚乙烯管道的规格尺寸也有不同要求。其中，用于内衬钢管的聚乙烯管道要求管道尺寸大壁厚小。
但是，现有市面上的生产设备，在生产管道时，由于挤出、冷却、牵引等工序技术限制，无法生产SDR达到100的超薄管道。另一方面，即使可以挤出，生产的产品形变严重，无法正常使用。
发明内容
针对现有技术存在的上述技术问题，本发明的目的在于提供一种超薄聚乙烯管道生产设备及生产方法。
一种超薄聚乙烯管道生产设备，包括冷却喷淋装置、支撑结构以及从左至右依次设置的挤出机、定径套、同一条直线上均匀间隔设置的若干滚轮环组件和牵引机，牵引机包括用于驱动管材向后牵引的上履带和下履带，支撑结构的外形分为半梭形前段和管状后段，半梭形前段的头部连接有钢绳且钢绳的另一端穿过滚轮环组件和定径套后连接在挤出机上；当管材向后牵引时，管材向内轻微形变并套设在支撑结构的外部，管材内壁与支撑结构外壁接触并带动支撑结构向后运动，当支撑结构头部与挤出机相连的钢绳绷紧时，支撑结构位于牵引机的上下履带之间，且牵引机的上下履带对管材外壁进行夹紧，支撑结构用以给管材提供足够的支撑力，防止管材在牵引过程中变形；其中，所述滚轮环组件设置于冷却喷淋装置的喷淋区域中，滚轮环组件用以对向后牵引的管材外壁提供滚动限位作用，防止管材发生形变。
进一步的，所述支撑结构为防变形托架，防变形托架包括支撑横梁和设于支撑横梁上的外壳，沿着支撑横梁的长度方向设置若干组支撑支架，每组支撑支架均包括设置在支撑横梁外周的至少3根支撑支架，支撑支架远离支撑横梁的一端与外壳内壁固定连接，支撑支架固定支撑在外壳与支撑横梁之间；支撑横梁一端从外壳头部穿出并连接钢绳，钢绳的另一端穿过滚轮环组件和定径套后连接在挤出机上；外壳外表面光滑，外壳前段呈半梭形，外壳后段呈管状，当管材挤出时，外壳头部的半梭形形状能够方便管材穿设在外壳外侧，管材内 壁能够与外壳后段管状外壁配合接触。
进一步的，所述外壳、支撑支架及支撑横梁均为铝合金材质。
进一步的，所述挤出机的机筒连接有挤出模头，挤出模头包括芯模、口模和设置在所述芯模和所述口模之间的环形料流道，所述环形料流道的出口连接定径套，口模靠近于其出口端的外侧设有冷却套，冷却套内部具有环形冷却流道，冷却套上设有用于连接环形冷却流道的进水口和出水口，以便向冷却套中通入冷却液，对挤出的管材提前冷却定型。
进一步的，所述挤出模头的芯模上设有吊环，钢绳的一端与所述吊环连接。
进一步的，所述滚轮环组件包括滚轮环以及均匀间隔设置在滚轮环内侧的3个滚轮，滚轮环内侧设置的3个滚轮分别位于一个虚拟等边三角形的三个顶点，所述滚轮的外形为两端厚中间细且由两端向中间的厚度平缓降低的中心对称结构，且滚轮的一侧截面为与管材外壁相配的弧形；当管材穿入滚轮环内侧时，管材从所述3个滚轮的中心区域穿过，滚轮环内侧的所有滚轮均与管材外壁配合接触，对向后牵引的管材提供限位作用，且向后牵引的管材带动滚轮发生滚动。
进一步的，所述滚轮环上均匀间隔设有3个螺纹孔，每个螺纹孔上配合螺纹连接一个支撑杆，支撑杆的另一端配合螺纹连接一个支撑架，一个支撑架上转动连接一个滚轮。
进一步的，所述冷却喷淋装置包括冷却喷淋管网，冷却喷淋管网能够喷淋交错排布的冷却水柱，当管材从冷却喷淋装置的喷淋区域中穿过时，冷却水柱以5～10°的切入角喷淋到管材外表面进行冷却。
一种超薄聚乙烯管道生产设备的生产方法，包括以下步骤：
1)聚乙烯原料经烘干后上料至挤出机中，利用挤出机的机筒和挤出模头加热塑化聚乙烯原料，再通过挤出模头的芯模和口模之间的环形料流道挤出成型，同时为了防止管道挤出后难以定型、发生形变，在口模外侧的冷却套中通入冷却液，进行管材挤出的提前冷却定型；
2)管材从挤出模头挤出时，钢绳自然处于管材内部，从挤出模头挤出的管材在牵引机的牵引作用下向后运动，先进入定径套进行真空冷却定径；
3)真空冷却定径后的管材进入冷却喷淋装置的喷淋区域中，冷却喷淋管网喷淋交错排布的冷却水柱，且冷却水柱以5～10°的切入角喷淋到管材外表面进行冷却，从而降低水流冲击力，进一步防止管材形变；同时在管材在冷却喷淋装置的喷淋区域中向后运动的过程中，管材还穿入滚轮环组件的滚轮环内侧并与滚轮均配合接触，且向后牵引的管材带动滚轮发生滚动；
管材继续向后运动的过程中，将防变形托架整体包覆在内，且管材内壁与防变形托架的外壳 后段管状外壁配合接触，在牵引机的牵引作用下使管材向后运动的过程中，防变形托架在管材内部提供支撑力，防止管材在牵引过程中发生变形，此时钢绳绷紧处于管材内部；
4)管材通过牵引之后，切割。
相对于现有技术，本发明取得的有益效果如下：
1)利用本发明的超薄聚乙烯管道生产设备，可实现SDR100的超薄聚乙烯管道挤出，同时优化整道生产工序，防止管材在定型、冷却、牵引过程中发生形变。
2)本发明在口模靠近于其出口端的外侧设有冷却套，通过采用口模端部局部冷却技术，有利于挤出管材快速成型，防止管材产生形变。有利于挤出超薄聚乙烯管道；
3)本发明采用滚轮环组件，当管材穿入滚轮环内侧时，滚轮环内侧的所有滚轮分别贴触在管材的外表面并分别发生滚动，以滚动摩擦替代滑动摩擦，可减少管材表面划痕缺陷，降低摩擦阻力，提高生产效率。另外在滚轮环组件的辅助作用下，也能进一步防止超薄聚乙烯管道发生形变。
4)本发明采用内支撑牵引结构(即防变形托架在管材内部提供支撑力)，可有效防止牵引工序引起管材形变。
附图说明
图1为挤出机的挤出模头结构示意图；
图2为挤出模头的截面结构示意图；
图3为本发明滚轮环组件的结构示意图；
图4为本发明防变形托架的立体结构示意图；
图5为本发明防变形托架的主视图；
图6为本发明防变形托架的截面结构示意图；
图中：1-口模，2-冷却套，21-进水口，2-2环形冷却流道，3-吊环，4-滚轮环，5-滚轮，6-管材，7-防变形托架，7-1外壳，7-2支撑支架，7-3支撑横梁。
具体实施方式
下面结合具体实施例对本发明作进一步说明，但本发明的保护范围并不限于此。
实施例：对照图1-6
一种超薄聚乙烯管道生产设备，包括冷却喷淋装置、支撑结构以及从左至右依次设置的挤出机、定径套、同一条直线上均匀间隔设置的若干滚轮环组件和牵引机，牵引机包括用于驱动管材向后牵引的上履带和下履带。支撑结构的外形分为半梭形前段和管状后段，半梭形前段的头部连接有钢绳且钢绳的另一端穿过滚轮环组件和定径套后连接在挤出机上，当管材向后 牵引时，管材向内轻微形变并套设在支撑结构的外部，管材内壁与支撑结构的外壁接触，通过摩擦力的作用带动支撑结构向后移动，当支撑结构头部与挤出机相连的钢绳绷紧时，支撑结构刚好位于牵引机的上下履带之间，同时牵引机的上下履带对管材外壁进行夹紧，从而方便对管材驱动向后牵引，整个过程中支撑结构可以给管材提供足够的支撑力，防止管材在牵引过程中变形。其中，所述滚轮环组件设置于冷却喷淋装置的喷淋区域中，滚轮环组件用以对向后牵引的管材外壁提供滚动限位作用，防止管材发生形变。
在实际工作时，为了增加牵引机的上下履带对管材的包覆牵引效果，可以在上下履带的相应表面开设与管材外形相配的弧形凹槽。例如在中国专利CN202021180117.X中，它在履带表面设置凹槽，通过凹槽增大管材与上下履带的接触面积，减小挤压力过于集中在管材上下两端，减少对管材的损害。
挤出机的机筒连接有挤出模头，挤出模头包括芯模、口模1和设置在所述芯模和所述口模1之间的环形料流道，所述环形料流道的出口连接定径套。口模1靠近于其出口端的外侧设有冷却套2，冷却套2内部具有环形冷却流道2-2，冷却套2上设有进水口21和出水口，以便向冷却套2的环形冷却流道中通入冷却液，对挤出的管材提前冷却定型。
滚轮环组件包括滚轮环4以及均匀间隔设置在滚轮环4内侧的3个滚轮5，滚轮环组件用以通过3个滚轮5对向后牵引的管材提供滚动限位作用，防止管材发生形变。对照图3中，每个滚轮环组件的结构中，滚轮环4内侧设置3个滚轮5，且3个滚轮5分别位于一个虚拟等边三角形的三个顶点，当管材6穿入滚轮环4内侧时，管材从所述3个滚轮5的中心区域穿过，且所述3个滚轮5分别贴触在管材6的外表面并分别发生滚动。滚轮5的外形为两端厚中间细且由两端向中间的厚度平缓降低的中心对称结构，且滚轮5的一侧截面为与管材外壁相配的弧形(即滚轮5侧部的弧度与挤出的管材外壁弧度相配)，当管材6穿入滚轮环4内侧时，滚轮环4内侧的所有滚轮5均与管材外壁配合接触，且向后牵引的管材6带动滚轮5发生滚动。
进一步地，对照图3中，滚轮环4上均匀间隔设有3个螺纹孔，每个螺纹孔上配合螺纹连接一个支撑杆，支撑杆的另一端配合螺纹连接一个支撑架，一个支撑架上转动连接一个滚轮5。支撑架与滚轮环4之间的支撑杆长度能够通过螺纹进行调节，以便适应不同口径的管材。本发明在支撑架内侧采用滚轮5，以滚动摩擦替代滑动摩擦，可减少管材表面划痕缺陷，降低摩擦阻力，提高生产效率。
所述冷却喷淋装置包括冷却喷淋管网，冷却喷淋管网能够喷淋交错排布的冷却水柱，当管材从冷却喷淋装置的喷淋区域中穿过时，冷却水柱以5～10°的切入角喷淋到管材 外表面进行冷却。本发明冷却段采用水冷方式为管材降温，由于管材厚度较小，集中的水柱也会对管材的不圆度产生一定影响。因此，本发明的冷却段水柱交错排布，以较小的切入角(5-10°)喷淋到管材表面进行冷却，降低水流冲击力，可进一步防止管材形变。
本发明的支撑结构采用防变形托架7，防变形托架7在支撑引导管材的同时，还可以起到限位作用，有效防止管材发生形变。防变形托架7整体为铝合金材质，质量轻，整体表面光滑，其头部的形状类似半梭形。
对照图4-6中，防变形托架7包括支撑横梁7-3和设于支撑横梁7-3上的外壳7-1，支撑横梁7-3一端从外壳7-1头部穿出并连接钢绳，钢绳另一端穿过滚轮环组件的滚轮环4和定径套并与挤出模头的芯模连接；外壳7-1表面光滑，外壳7-1前段呈半梭形，外壳7-1后段呈管状，当管材挤出时，外壳7-1头部的半梭形形状能够方便管材穿设在外壳7-1外侧，管材内壁能够与外壳7-1后部管状外壁配合接触。沿着支撑横梁7-3的长度方向设置若干组支撑支架7-2，每组支撑支架7-2均包括设置在支撑横梁7-3外周的至少3根支撑支架，支撑支架远离支撑横梁7-3的一端与外壳7-1内壁固定连接，使得支撑支架固定支撑在外壳7-1与支撑横梁7-3之间。外壳7-1、支撑支架7-2及支撑横梁7-3均为铝合金材质。
管材挤出时，钢索自然处于管材内部，随着管材不断向设备后部移动，移动到牵引段时(即移动到牵引机的上履带和下履带之间)，由于防变形托架7为梭形且表面光滑，管材在向后运动的过程中，自然将防变形托架7包含在内。然后后续稳定运行的过程中，钢绳绷紧在管材的内部，置于上履带和下履带之间的防变形托架7配合穿设在管材内为其提供支撑力，同时上履带和下履带分别压紧管材的上下两侧外壁，可进一步防止管材在牵引过程中变形。
对照图1和图2中，挤出模头的芯模上设有吊环3，支撑横梁7-3一端通过钢绳与所述吊环3连接。
采用本发明的生产设备，生产超薄聚乙烯管道的方法，包括以下步骤：
1)聚乙烯原料经烘干后上料至挤出机中，利用挤出机的机筒和挤出模头加热塑化聚乙烯原料，再通过挤出模头的芯模和口模1之间的环形料流道挤出成型，同时为了防止管道挤出成型后薄厚不均，甚至出现破口的情况，在口模1外侧的冷却套2的环形冷却流道中通入冷却液，加快出料的冷却速度，防止管材因重力导致塌陷，引起管材发生形变。
2)管材从挤出模头挤出时，钢绳自然处于管材内部，从挤出模头挤出的管材在牵引机的牵引作用下向后运动，先进入定径套进行真空冷却定径；
3)真空冷却定径后的管材进入冷却喷淋装置的喷淋区域中，冷却喷淋管网喷淋交错排布的 冷却水柱，且冷却水柱以5～10°的切入角喷淋到管材外表面进行冷却；同时在管材在冷却喷淋装置的喷淋区域中向后运动的过程中，管材还穿入滚轮环组件的滚轮环4内侧并与滚轮5均配合接触，且向后牵引的管材带动滚轮5发生滚动；
管材继续向后运动的过程中，将防变形托架7整体包覆在内，且管材内壁与防变形托架7的外壳7-1后部管状外壁配合接触，在牵引机的牵引作用下使管材向后运动的过程中，防变形托架7在管材内部提供支撑力，防止管材在牵引过程中发生变形，此时钢绳绷紧处于管材内部；
4)管材通过牵引之后，切割。
本说明书所述的内容仅仅是对发明构思实现形式的列举，本发明的保护范围不应当被视为仅限于实施例所陈述的具体形式。

Claims (10)

  1. 一种超薄聚乙烯管道生产设备，其特征在于包括冷却喷淋装置、支撑结构以及从左至右依次设置的挤出机、定径套、若干滚轮环组件和牵引机，牵引机包括用于驱动管材向后牵引的上履带和下履带，支撑结构包含半梭形前段和管状后段，所述半梭形前段的头部连接有钢绳，所述钢绳的另一端穿过滚轮环组件和定径套后连接在挤出机上；当管材向后牵引时，管材套设在支撑结构的外部，管材内壁与支撑结构外壁接触并带动支撑结构向后运动，当支撑结构头部与挤出机相连的钢绳绷紧时，支撑结构位于牵引机的上下履带之间，且牵引机的上下履带对管材外壁进行夹紧，支撑结构用以给管材提供足够的支撑力，防止管材在牵引过程中变形；其中，所述滚轮环组件设置于冷却喷淋装置的喷淋区域中，滚轮环组件用以对向后牵引的管材外壁提供滚动限位作用，防止管材发生形变。
  2. 如权利要求1所述的一种超薄聚乙烯管道生产设备，其特征在于所述支撑结构包含防变形托架(7)，防变形托架(7)包括支撑横梁(7-3)和设于支撑横梁(7-3)上的外壳(7-1)，沿着支撑横梁(7-3)的长度方向设置若干组支撑支架(7-2)，每组支撑支架(7-2)均包括设置在支撑横梁(7-3)外周的至少3根支撑支架，支撑支架远离支撑横梁(7-3)的一端与外壳(7-1)内壁固定连接。
  3. 如权利要求2所述的一种超薄聚乙烯管道生产设备，其特征在于支撑横梁(7-3)一端从外壳(7-1)头部穿出并连接钢绳，钢绳的另一端穿过滚轮环组件和定径套后连接在挤出机上；外壳(7-1)外表面光滑，外壳(7-1)前段呈半梭形，外壳(7-1)后段呈管状，当管材挤出时，外壳(7-1)头部的半梭形形状能够方便管材穿设在外壳(7-1)外侧，管材内壁能够与外壳(7-1)后段管状外壁配合接触。
  4. 如权利要求2所述的一种超薄聚乙烯管道生产设备，其特征在于所述外壳(7-1)、支撑支架(7-2)及支撑横梁(7-3)均为铝合金材质。
  5. 如权利要求1所述的一种超薄聚乙烯管道生产设备，其特征在于挤出机包含挤出模头，所述挤出模头包括芯模、口模(1)和设置在所述芯模和所述口模(1)之间的环形料流道，所述环形料流道的出口连接定径套，口模(1)靠近于其出口端的外侧设有冷却套(2)，冷却套(2)内部具有环形冷却流道，冷却套(2)上设有与环形冷却流道相通的进水口(21)和出水口，以便向冷却套(2)中通入冷却液，对挤出的管材提前冷却定型；
    所述挤出模头的芯模上设有吊环(3)，所述钢绳的另一端与所述吊环(3)连接。
  6. 如权利要求1所述的一种超薄聚乙烯管道生产设备，其特征在于滚轮环组件包括滚轮环(4)以及均匀间隔设置在滚轮环(4)内侧的3个滚轮(5)，滚轮环(4)内侧设置的3个滚轮(5)分别位于一个虚拟等边三角形的三个顶点，所述滚轮(5)的形状为两端厚中间细 且由两端向中间的厚度平缓降低的中心对称结构，且滚轮(5)的一侧截面为与管材外壁相配的弧形。
  7. 如权利要求6所述的一种超薄聚乙烯管道生产设备，其特征在于所述滚轮环(4)上均匀间隔设有3个螺纹孔，每个螺纹孔上配合螺纹连接一个支撑杆，支撑杆的另一端配合螺纹连接一个支撑架，一个支撑架上转动连接一个滚轮(5)。
  8. 如权利要求1所述的一种超薄聚乙烯管道生产设备，其特征在于所述冷却喷淋装置包括冷却喷淋管网，冷却喷淋管网能够喷淋交错排布的冷却水柱，当管材从冷却喷淋装置的喷淋区域中穿过时，冷却水柱以5～10°的切入角喷淋到管材外表面进行冷却。
  9. 一种基于权利要求1的超薄聚乙烯管道生产设备的生产方法，其特征在于包括以下步骤：
    1)挤出机将管材挤出并预冷却后，钢绳自然处于管材内部，从挤出机挤出的管材在牵引机的牵引作用下向后运动，先进入定径套进行真空冷却定径；
    2)真空冷却定径后的管材进入冷却喷淋装置的喷淋区域中，冷却喷淋管网喷淋交错排布的冷却水柱，且冷却水柱以5～10°的切入角喷淋到管材外表面进行冷却；同时管材在冷却喷淋装置的喷淋区域中向后运动的过程中，管材还穿入滚轮环组件的滚轮环(4)内侧并与滚轮(5)均配合接触，且向后牵引的管材带动滚轮(5)发生滚动；
    管材继续向后运动的过程中，将支撑结构整体包覆在内，管材内壁与支撑结构外壁接触，在牵引机的牵引作用下使管材向后运动的过程中，支撑结构在管材内部提供支撑力，防止管材在牵引过程中发生变形，此时钢绳绷紧处于管材内部；
    3)管材通过牵引之后，切割。
  10. 如权利要求9所述的超薄聚乙烯管道生产设备的生产方法，其特征在于步骤1)中挤出机将管材挤出并预冷却的具体过程为：聚乙烯原料经烘干后上料至挤出机中，利用挤出机的机筒和挤出模头加热塑化聚乙烯原料，再通过挤出模头的芯模和口模(1)之间的环形料流道挤出成型，在口模(1)外侧的冷却套(2)中通入冷却液，进行管材挤出的提前冷却定型。
PCT/CN2022/077384 2021-11-12 2022-02-23 一种超薄聚乙烯管道生产设备及生产方法 WO2023082491A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202111337360.7A CN114131877B (zh) 2021-11-12 2021-11-12 一种超薄聚乙烯管道生产设备及生产方法
CN202111337360.7 2021-11-12

Publications (1)

Publication Number Publication Date
WO2023082491A1 true WO2023082491A1 (zh) 2023-05-19

Family

ID=80392811

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/077384 WO2023082491A1 (zh) 2021-11-12 2022-02-23 一种超薄聚乙烯管道生产设备及生产方法

Country Status (2)

Country Link
CN (1) CN114131877B (zh)
WO (1) WO2023082491A1 (zh)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117001975A (zh) * 2023-06-07 2023-11-07 杭州人通管业有限公司 基于分段温控调节的电力电缆保护管定型冷却装置
CN117681406A (zh) * 2024-02-01 2024-03-12 青州市塑霸机械有限公司 一种用于塑料管件生产的挤压成型机
CN117718347A (zh) * 2023-12-20 2024-03-19 四川万圣通精密机械制造有限公司 一种冷拔机

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114803138A (zh) * 2022-05-19 2022-07-29 宝丰钢业集团有限公司 一种钢管的套设安置器
CN116766453B (zh) * 2023-07-05 2023-12-08 杭州泰德机电有限公司 具有散热功能的mpp管道生产用牵引辅助装置
CN117162455A (zh) * 2023-09-08 2023-12-05 浙江远旺电力设备有限公司 一种mpp电力管塑料管挤出定型装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2814071A (en) * 1951-08-09 1957-11-26 British Celanese Method and apparatus for producing tubular articles
GB1345822A (en) * 1970-12-11 1974-02-06 Walter J J Method for the continuous manufacture of banded leak-tight tubes and an apparatus for carrying out this method
CN101164762A (zh) * 2007-09-20 2008-04-23 上海市塑料研究所 特殊的高精度pfa套筒薄膜的制备方法
CN107584742A (zh) * 2017-07-28 2018-01-16 山西华星管业科技有限公司 超高分子量聚乙烯管材的生产方法及其使用的挤出机机模
CN108705757A (zh) * 2018-05-29 2018-10-26 云南联塑科技发展有限公司 一种pvc-u给排水管内壁冷却定型装置
CN208148452U (zh) * 2018-02-28 2018-11-27 贵州飞泉实业有限公司 一种管材冷却传送装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2806956B1 (fr) * 2000-03-29 2003-05-09 Alphacan Sa Procede et ligne de fabrication en continu de tubes en matiere plastique avec etirage bi-axial, et tube en matiere plastique obtenu
FR2851954B1 (fr) * 2003-03-07 2006-07-07 Alphacan Sa Procede de fabrication en continu de tubes en matiere plastique avec etirage bi-axial et ligne de fabrication pour ce procede
CN102205637B (zh) * 2011-04-15 2013-05-08 天津中财型材有限责任公司 一种双向拉伸聚氯乙烯管材生产设备及工艺
CN104017310B (zh) * 2014-06-20 2016-08-24 福建博大塑业新材料有限公司 一种双轴取向聚氯乙烯管及其制备方法
CN210148729U (zh) * 2019-04-26 2020-03-17 常州市兴诚高分子材料有限公司 塑料管材径向夹紧机构、牵引机及塑料管材加工系统
CN110625905A (zh) * 2019-10-15 2019-12-31 吕延泉 高温低扩张比在线轴取向增强增韧pvc-c管材挤出装置及方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2814071A (en) * 1951-08-09 1957-11-26 British Celanese Method and apparatus for producing tubular articles
GB1345822A (en) * 1970-12-11 1974-02-06 Walter J J Method for the continuous manufacture of banded leak-tight tubes and an apparatus for carrying out this method
CN101164762A (zh) * 2007-09-20 2008-04-23 上海市塑料研究所 特殊的高精度pfa套筒薄膜的制备方法
CN107584742A (zh) * 2017-07-28 2018-01-16 山西华星管业科技有限公司 超高分子量聚乙烯管材的生产方法及其使用的挤出机机模
CN208148452U (zh) * 2018-02-28 2018-11-27 贵州飞泉实业有限公司 一种管材冷却传送装置
CN108705757A (zh) * 2018-05-29 2018-10-26 云南联塑科技发展有限公司 一种pvc-u给排水管内壁冷却定型装置

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117001975A (zh) * 2023-06-07 2023-11-07 杭州人通管业有限公司 基于分段温控调节的电力电缆保护管定型冷却装置
CN117001975B (zh) * 2023-06-07 2024-02-23 杭州人通管业有限公司 基于分段温控调节的电力电缆保护管定型冷却装置
CN117718347A (zh) * 2023-12-20 2024-03-19 四川万圣通精密机械制造有限公司 一种冷拔机
CN117681406A (zh) * 2024-02-01 2024-03-12 青州市塑霸机械有限公司 一种用于塑料管件生产的挤压成型机
CN117681406B (zh) * 2024-02-01 2024-05-03 青州市塑霸机械有限公司 一种用于塑料管件生产的挤压成型机

Also Published As

Publication number Publication date
CN114131877A (zh) 2022-03-04
CN114131877B (zh) 2023-02-07

Similar Documents

Publication Publication Date Title
WO2023082491A1 (zh) 一种超薄聚乙烯管道生产设备及生产方法
US3529047A (en) Method for continuous manufacture of corrugated plastic pipes
CN110065223B (zh) 塑料薄膜吹塑方法
CN104816445A (zh) 一种加工pe管道的生产线
CN210362399U (zh) 一种流延机
CN103991221A (zh) 一种无模具大口径pvc管材动态成型方法及装置
CN1023886C (zh) 螺旋塑料管的制造方法及设备
CN207026187U (zh) 一种pe管材在线校圆装置
CN210617072U (zh) 一种反光膜的生产降温结构
US3180909A (en) Process and apparatus for forming tubular films and the like
CN209955273U (zh) 一种吸管挤出冷却设备
US5139730A (en) Method and apparatus for manufacturing ribbed pipe
CN208197534U (zh) 一种中间膜的冷却系统
US3574996A (en) Tubular sheathed chain
CN115674629A (zh) 一种高一致性电缆护套制造用挤塑机
CN111251574B (zh) 一种用于高密度大口径聚乙烯管材跨规格生产的模具
CN113102529B (zh) 一种铜杆降磨损动态修正式连续性拉线机构及其系统
CN206607275U (zh) 一种用于规则截面铝合金挤压型材柔性在线淬火装置
CN112793116A (zh) 一种大管径柔性复合高压输送管加工设备及工艺
US3432886A (en) Tubular film extrusion apparatus
CN1140399C (zh) 铝塑复合管的制作方法及铝管定径对缝装置
CN207207050U (zh) 一种无熔接痕的小口径管材挤出成型装置
CN105799180A (zh) 一种连续聚乙烯缠绕结构壁管制造装备
CN111136230B (zh) 一种铜包铝线的加工系统以及加工方法
CN204365732U (zh) 型材挤压机

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22891303

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE