WO2017024746A1 - 一种聚合物管道喷流堆砌成型方法及装置 - Google Patents

一种聚合物管道喷流堆砌成型方法及装置 Download PDF

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Publication number
WO2017024746A1
WO2017024746A1 PCT/CN2015/100077 CN2015100077W WO2017024746A1 WO 2017024746 A1 WO2017024746 A1 WO 2017024746A1 CN 2015100077 W CN2015100077 W CN 2015100077W WO 2017024746 A1 WO2017024746 A1 WO 2017024746A1
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WO
WIPO (PCT)
Prior art keywords
pipe
melt
calendering
polymer
jet
Prior art date
Application number
PCT/CN2015/100077
Other languages
English (en)
French (fr)
Inventor
瞿金平
Original Assignee
华南理工大学
广州华新科实业有限公司
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
Priority to MX2018000843A priority Critical patent/MX2018000843A/es
Priority to US15/748,693 priority patent/US20190001535A1/en
Priority to EP15900935.6A priority patent/EP3335864A4/en
Priority to RU2018105908A priority patent/RU2685664C1/ru
Priority to SG11201800324RA priority patent/SG11201800324RA/en
Priority to JP2018506958A priority patent/JP6578054B2/ja
Priority to BR112018002121-0A priority patent/BR112018002121A2/pt
Priority to CA2992957A priority patent/CA2992957C/en
Application filed by 华南理工大学, 广州华新科实业有限公司 filed Critical 华南理工大学
Priority to KR1020187003661A priority patent/KR102050859B1/ko
Priority to AU2015405308A priority patent/AU2015405308A1/en
Priority to MYPI2018700307A priority patent/MY197065A/en
Publication of WO2017024746A1 publication Critical patent/WO2017024746A1/zh
Priority to ZA2018/00280A priority patent/ZA201800280B/en
Priority to HK18110178.3A priority patent/HK1250692A1/zh

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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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
    • B29C43/24—Calendering
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/34—Feeding the material to the mould or the compression means
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/44—Compression means for making articles of indefinite length
    • B29C43/46—Rollers
    • 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
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0011—Combinations of extrusion moulding with other shaping operations combined with compression moulding
    • 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
    • B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • 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
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular 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
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/35—Extrusion nozzles or dies with rollers
    • 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
    • B29C48/906—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 using roller calibration
    • 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
    • B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
    • B29C69/02—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore of moulding techniques only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D23/00—Producing tubular articles
    • B29D23/001—Pipes; Pipe joints
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/34—Feeding the material to the mould or the compression means
    • B29C2043/3433—Feeding the material to the mould or the compression means using dispensing heads, e.g. extruders, placed over or apart from the moulds
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/44—Compression means for making articles of indefinite length
    • B29C43/46—Rollers
    • B29C2043/467—Rollers plurality of rollers arranged in a specific manner in relation to each other
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/44—Compression means for making articles of indefinite length
    • B29C43/46—Rollers
    • B29C2043/468—Rollers take-off rollers, i.e. arranged adjacent a material feeding device
    • 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
    • B29C48/07—Flat, e.g. panels
    • 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
    • B29C48/131—Curved 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 present invention relates to the field of polymer material processing and molding technology, and in particular, to a polymer pipe jet stacking molding method and device.
  • polymer pipes Compared with traditional pipes such as metal pipes, polymer pipes have corrosion resistance, easy installation, energy saving, low fluid resistance, environmental protection, low heat loss in conveying heat medium, excellent shock resistance, light weight, and transportation construction and maintenance. Low comprehensive cost, fast and reliable connection, long service life and low cycle cost, high production efficiency, suitable for industrial large-scale production, rich raw material resources and recyclable and reusable. Therefore, polymer pipes are widely used in water supply and drainage, natural gas transportation, building heating, power communication sheath pipes, and water-saving irrigation.
  • Wrapping fusion forming refers to extruding a plastic strip (pure plastic strip or composite other material) of a certain cross-sectional shape, and then winding the plastic strips onto the mandrel mold by means of a winding device, and then in a plastic strip.
  • Locally heated spray adhesive either directly in a molten state directly onto the mandrel mold or directly wrapped around the outer surface of a plastic melt small-diameter plastic pipe) and compacted by rollers to weld the splines together Finally, remove the mandrel mold and finally form the pipe.
  • the invention of CN 10138 0819A discloses a method for winding a large-diameter pipe, but this method requires pre-forming a small-diameter pipe, and the formed small-diameter pipe is first coated with a plastic melt and then wound.
  • a special mandrel mold is required for the type, and the mandrel mold is required to be replaced every time a pipe of a diameter is formed, and the secondary heating device is required for the same type of molding; in addition, the formed melt strip and the small diameter pipe are formed.
  • the molding method has the disadvantages of complicated winding process, poor flexibility, high energy consumption, large consumables, large flow resistance, easy leakage, and low pressure.
  • the object of the present invention is to overcome the deficiencies of the prior art, and to provide a polymer pipe jet stacking molding method, which solves the problem that the molding size of the molded polymer pipe is limited, the mold cost is high, the molding process is complicated, and the energy consumption is high. , poor mechanical properties, low molding efficiency, limited molding materials and other issues.
  • Another object of the present invention is to provide a polymer pipe jet stacking apparatus for implementing the above method.
  • the technical solution of the present invention is: a polymer pipe jet stacking forming method, which is formed by spiral winding stacking (that is, a polymer melt is spirally stacked in a certain space around a central axis under a certain pressure, a spiral layer and a layer
  • the pipeline is continuously formed by embedding the melt in the formed tube blank, combining the jet welding action and the local calendering sizing effect of the melt.
  • the polymer melt is subjected to a continuous spiral winding motion, and the melt is sprayed into the formed pipe through a pre-embedded melt injection mechanism to fuse with the preceding polymer, and is passed through a partial calendering mechanism.
  • the calendering action is shaped, and a continuous polymer pipe is formed under the auxiliary action of the pipe diameter setting adjustment mechanism and the rotary drafting mechanism.
  • the polymer pipe jet flow building molding device for realizing the above method comprises an extruder, a melt injection mechanism, a partial calendering mechanism and a pipe diameter setting adjustment mechanism, and the melt injection mechanism is disposed in the extruder Extruding the end, and the melt-spraying mechanism is embedded in the formed tube blank, the partial calendering mechanism and the tube diameter setting adjustment mechanism are distributed on the tube wall in the circumferential direction of the tube blank, and the partial calendering mechanism is disposed in the corresponding melt-melting mechanism Position, the melt injection mechanism is located in the pipe wall, the partial calendering mechanism is located outside the pipe wall, the partial calendering mechanism and A confinement space is formed between the melt injection mechanisms.
  • the melt-injecting mechanism is a pre-embedded feeding nozzle, which protrudes into the confined space in the pipe forming raft and is embedded in the melt of the preformed pipe to generate a jet.
  • the bottom of the extruder is provided with a frame, and a mounting plate is arranged on one side of the frame at the extrusion end of the extruder, and the melt injection mechanism, the partial calendering mechanism and the pipe diameter setting adjustment mechanism are respectively installed on the mounting plate. on.
  • the outer circumference of the tube blank is further provided with a rotating bowing I mechanism, and the rotating bowing I mechanism comprises a spiral bowing I piece and a supporting rod, and a plurality of spiral pulling parts are distributed around the outer circumference of the tube embryo, and each spiral pulling piece respectively passes through corresponding
  • the support rod is connected to the mounting plate.
  • the rotating traction mechanism pulls the tube blank, and drives the formed tube embryo to spirally move to form a continuous polymer pipe.
  • the partial calendering mechanism comprises an active calendering roller, a driven calendering roller and a driving motor.
  • the active calendering roller and the driven calendering roller are respectively disposed on the inner and outer sides of the tube blank, and the active calendering roller is connected with the driving motor, and the melt jet is sprayed.
  • the mechanism is disposed in the space between the active calender roll and the driven calender roll.
  • the two calender rolls play a partial calendering and shaping role in the forming;
  • the calendering roller is externally connected to the temperature regulating system, and the position of the calendering rolls is adjustable, that is, the action of the adjusting parts, adjusting the calender rolls without replacing the calender rolls
  • the position of the pipe is automatically adjusted by the pipe diameter setting adjustment mechanism in the pipe diameter direction to realize the molding of pipes of different calibers and wall thicknesses.
  • the local calendering mechanism is further provided with a positioning component for adjusting the thickness of the pipe wall.
  • the active calender roll and the driven calender roll are also externally connected to a temperature adjustment system.
  • the pipe diameter setting adjustment mechanism comprises a plurality of sets of shaping roller sets and adjusting members, and each of the shaping roller sets and the adjusting members are in one-to-one correspondence and distributed along a circumferential direction of the tube blank.
  • An Archimedes spiral hook groove cam mechanism is arranged in the center of the tube embryo, and each set of shaping roller set and corresponding adjusting member are respectively connected with the Archimedes spiral hook groove cam mechanism, thereby realizing different diameters and walls.
  • Stereotype of thick pipes is arranged in the center of the tube embryo, and each set of shaping roller set and corresponding adjusting member are respectively connected with the Archimedes spiral hook groove cam mechanism, thereby realizing different diameters and walls.
  • each set of shaped roller sets includes an inner fixed type roller and an outer fixed type roller, the inner fixed type roller is disposed on the inner side of the tube embryo, the outer shaped type roller is disposed on the outer side of the tube blank, the inner fixed type wheel and the outer set wheel
  • the shaping rollers are arranged between the restraining springs.
  • the above polymer pipe jet stacking forming device uses ⁇ , the principle is: forming ⁇ , the polymer melt provided by the extruder flows through the nozzle into the confined space, at the same time of the melt jet, The partial calendering mechanism calenders the melt rotation, and after forming a section of the pipe under the guide of the shaping roller in the pipe diameter setting adjustment mechanism, Then, the pipe moves forward spirally under the action of the rotating bowing mechanism and the pipe diameter setting adjustment mechanism to form a continuous pipe.
  • the tube blank is initially driven to rotate by two calender rolls in the partial calendering mechanism, and the pipe is continuously formed by screwing between the spiral pulling member and the pipe surface.
  • the present invention has the following beneficial effects:
  • the polymer pipe can be formed by using the polymer pipe jet stacking molding method and device.
  • the polymer pipe jet flow building molding device does not need to extrude the mold, and the quality of the formed large diameter pipe can reach or even exceed the pipe formed by the mold.
  • the buried nozzle spray polymer melt generates partial pressure, so that the first formed pipe and the post-formed pipe are fully integrated Together, the production of weld lines is greatly reduced, so that the mechanical properties of the formed polymer pipes are substantially improved compared to the wound welded joints.
  • the polymer pipe can be used to form a flexible molding pipe, that is, without changing the extruder
  • the large-diameter polymer pipe is directly prepared from the melt, and does not need to go through the intermediate link, and can reduce energy consumption compared with the winding forming; Plasticizing capacity extruder for forming large diameter pipes, reducing investment in large equipment; no mold required during molding
  • FIG. 1 is a schematic structural view of a polymer pipe jet stacking molding apparatus.
  • FIG. 2 is a partial enlarged view of the pre-buried feed nozzle of FIG. 1.
  • FIG. 3 is a schematic view showing the positional relationship between a partial calendering mechanism and a supply nozzle.
  • FIG. 4 is a schematic diagram of a pipe diameter setting adjustment mechanism. BEST MODE FOR CARRYING OUT THE INVENTION
  • a polymer pipe jet flow building molding method and device the melt supply device is an extruder
  • the jet flow building molding apparatus includes an extruder 1 (as a polymer melt supply device), a pre-filled supply nozzle 3 (as a melt injection mechanism), and active calendering.
  • extruder 1 as a polymer melt supply device
  • pre-filled supply nozzle 3 as a melt injection mechanism
  • active calendering roller 6, driven calender roll 7, drive motor 2, rotary traction mechanism, frame 12 and pipe diameter setting adjustment mechanism.
  • the active calendering roller 6, the driven calendering roller 7 and the driving motor 2 constitute a partial calendering mechanism;
  • the rotating reeling I mechanism is composed of a spiral pulling bow member 10 and a support rod 9;
  • the pre-buried feeding nozzle 3 is connected with the extruder 1
  • the feed nozzle is further provided with a baffle 15 , and the pre-filled feed nozzle is fixed on the baffle;
  • the active calender roll 6 and the driven calender roll 7 are respectively fixed on the mounting plate 4, the active calender roll 6 and the drive
  • the motor is connected and can be actively rotated, and the active calendering roller 6 and the driven calendering roller 7 can be moved radially along the polymer pipe.
  • the shaping roller group 8 can be along the pipe diameter under the action of the adjusting member 13.
  • the direction adjustment position is as shown in FIG. 1; the extruder 1 and the mounting plate 4 are fixed to the frame 12.
  • the extruder 1 extrudes a polymer melt of a certain pressure and temperature, and the melt flows through the supply nozzle 3 to the confined space.
  • the calendered plastic melt forms a section of polymer pipe along the shaping roller set 8 in the pipe diameter setting adjustment mechanism, and the pipe is in the spiral bowing I piece 10 and Under the joint action of the pipe diameter setting adjustment mechanism, the forward spiral motion is continued, and the subsequent polymer melt continues to be sprayed between the two calender rolls and the initial polymer pipe; the forming crucible, the feeding nozzle is fixed, and the active calendering roll 6 And the driven calendering roller 7 rotates, under the action of the pressure, the first formed pipe is fully fused with the melt of the subsequent jet, and after cooling, the continuous polymer pipe 11 is formed. After forming a desired length of polymer tubing, the cutting device cuts the tubing.
  • This cycle molding a certain length of polymer pipe. Adjustment is also provided above the partial calendering mechanism
  • the positioning part 5 for the wall thickness of the pipe wall when the size of the polymerization pipe such as the pipe diameter and the wall thickness varies, the main rolling roller 6, the driven calendering roller 7, the spiral traction member and the shaping roller group 8 can be respectively adjusted on the mounting plate.
  • the upper position and the position of the feed nozzle 3 can be adjusted to form pipes of different specifications.

Abstract

一种聚合物管道喷流堆砌成型方法及装置，在螺旋缠绕堆砌成型过程中，通过在已形成的管胚中埋入熔体，结合熔体产生的喷流熔接作用和局部压延的定型作用，连续形成管道。其装置包括挤出机（1）、熔体喷射机构（3）、局部压延机构和管径定型调整机构，熔体喷射机构（3）设于挤出机（1）的挤出末端且埋入已形成的管胚中，局部压延机构和管径定型调整机构分布于管胚圆周方向的管壁上，且局部压延机构设于熔体喷射机构对应的位置，熔体喷射机构位于管壁内，局部压延机构位于管壁外，局部压延机构和熔体喷射机构之间形成约束空间。可解决成型聚合物管道中成型尺寸受限、模具成本高、成型工艺复杂、能耗高、力学性能差、成型效率低、成型原料受限等问题。

Description

一种聚合物管道喷流堆砌成型方法及装置 技术领域
[0001] 本发明涉及高分子材料加工成型技术领域， 特别涉及一种聚合物管道喷流堆砌 成型方法及装置。
背景技术
[0002] 与金属管道等传统管道比较， 高聚物管具有耐腐蚀， 易安装， 节能， 输送流体 阻力小， 环保， 输送热介质吋热量损失小、 优异的抗震性， 质量轻、 运输施工 维护综合成本低， 连接快捷可靠， 使用寿命长且周期费用低， 生产效率高、 适 合工业化大规模生产， 原料资源丰富且可回收再利用等优点。 因此， 高聚物管 道在给排水、 天然气输送、 建筑采暖、 电力通信护套管、 节水灌溉等领域得到 广泛应用。
[0003] 目前， 可用来成型聚合物管道的工艺方法有挤出成型和缠绕熔接成型。
[0004] 挤出成型存在需要专用模具， 在成型大口径管道吋， 需要用到大型挤出机和挤 出模具； 挤出成型大口径管道由于取向作用导致管道周向强度小于轴向强度； 同吋由于大口径管道壁厚大， 成型过程中熔体的流动控制比较难， 易发生熔垂 现象， 易出现成型缺陷 （如缩孔或气泡） 从而导致管道力学性能差， 故直接挤 出成型很难成型大口径管道； 另外， 每挤出一种直径的管材需更换模具、 挤出 设备和相关辅助设备， 故挤出成型大口径管道又存在成本高和灵活性较差等缺 点。
[0005] 缠绕熔接成型是指先挤出一定截面形状的塑料条 （纯塑料条或复合其他材料） ， 然后通过缠绕设备把塑料条以互相搭接方式缠绕到芯棒模具上， 然后在塑料 条之间局部加热喷涂粘结剂 （或者直接以熔融态直接缠绕到芯棒模具上或者直 接缠绕外表面有塑料熔体小口径塑料管道） 并经滚柱压实， 使样条之间熔接复 合在一起， 最后取出芯棒模具最终成型管道。 德国克拉公司及公幵号为 CN10138 0819A的发明申请公幵了一种缠绕熔接大口径管道的方法， 但这种方法需要预先 成型小口径管道， 成型吋小口径管道先涂覆塑料熔体再缠绕到芯轴上； 缠绕成 型吋需用到专用芯轴模具， 每成型一种口径的管道吋需更换芯轴模具， 同吋在 成型吋需用到二次加热设备； 另外， 成型吋熔体料条及小口径管道之间存在熔 接痕， 故该成型方法存在缠绕工艺复杂、 灵活性差、 能耗高、 耗材多、 流阻大 、 易泄漏、 承压低等缺点。
[0006] 为此， 针对目前聚合物管道成型中存在的问题， 有必要幵发一种成型灵活、 成 型制品力学性能高、 成本低、 表面质量好、 能耗低、 工艺简单且生产效率高的 新工艺方法和装置。
技术问题
[0007] 本发明的目的在于克服现有技术的不足， 提供一种聚合物管道喷流堆砌成型方 法， 以解决成型聚合物管道中成型尺寸受限、 模具成本高、 成型工艺复杂、 能 耗高、 力学性能差、 成型效率低、 成型原料受限等问题。
[0008] 本发明的另一目的在于提供一种用于实现上述方法的聚合物管道喷流堆砌成型 装置。
问题的解决方案
技术解决方案
[0009] 本发明的技术方案为： 一种聚合物管道喷流堆砌成型方法， 在螺旋缠绕堆砌成 型 （即聚合物熔体在一定压力下绕中心轴螺旋堆积在一定空间内， 螺旋层与层 之间无间隙缠绕融合在一起） 过程中， 通过在已形成的管胚中埋入熔体， 结合 熔体产生的喷流熔接作用和局部压延的定型作用， 连续形成管道。
[0010] 管道成型过程中， 聚合物熔体作连续螺旋缠绕运动， 且熔体经由预埋式的熔体 喷射机构喷流入已成型的管道中与前续聚合物熔合， 并通过局部压延机构的压 延作用定型， 在管径定型调整机构和旋转牵弓 I机构的辅助作用下成型连续的聚 合物管道。
[0011] 本发明用于实现上述方法的聚合物管道喷流堆砌成型装置， 包括挤出机、 熔体 喷射机构、 局部压延机构和管径定型调整机构， 熔体喷射机构设于挤出机的挤 出末端， 且熔体喷射机构埋入已形成的管胚中， 局部压延机构和管径定型调整 机构分布于管胚圆周方向的管壁上， 且局部压延机构设于熔体喷射机构对应的 位置， 熔体喷射机构位于管壁内， 局部压延机构位于管壁外， 局部压延机构和 熔体喷射机构之间形成约束空间。
[0012] 所述熔体喷射机构为预埋式的供料喷嘴， 在管道成型吋伸入到约束空间中， 并 埋入到预成型管道熔体内部产生喷流。
[0013] 所述挤出机底部设有机架， 位于挤出机挤出末端的机架一侧设有安装板， 熔体 喷射机构、 局部压延机构和管径定型调整机构分别安装于安装板上。
[0014] 所述管胚外周还设有旋转牵弓 I机构， 旋转牵弓 I机构包括螺旋牵弓 I件和支撑杆， 管胚外周分布有多个螺旋牵引件， 各螺旋牵引件分别通过相应的支撑杆与安装 板连接。 旋转牵引机构对管胚进行牵引， 带动已成型的管胚进行螺旋运动， 使 其成型连续的聚合物管道。
[0015] 所述局部压延机构包括主动压延辊、 从动压延辊和驱动电机， 主动压延辊和从 动压延辊分别设于管胚的内外两侧， 主动压延辊与驱动电机连接， 熔体喷射机 构设于主动压延辊和从动压延辊之间的空间内。 两个压延辊在成型中起到局部 压延定型作用； 压延辊上外接温度调节系统， 且压延辊的位置可调， 即通过调 位零件的作用， 在不更换压延辊的前提下， 调整压延辊的位置， 同吋通过管径 定型调整机构对定型滚轮在管径方向的自动调整位置， 实现不同口径和壁厚管 道的成型。
[0016] 所述局部压延机构上方还设有调节管壁厚度用的调位零件。
[0017] 所述主动压延辊和从动压延辊还外接温度调节系统。
[0018] 所述管径定型调整机构包括多组定型滚轮组和调整件， 各定型滚轮组和调整件 一一对应并沿着管胚的圆周方向分布。 在管胚内的中心设有阿基米德螺线钩槽 凸轮机构， 各组定型滚轮组和相应的调整件分别与阿基米德螺线钩槽凸轮机构 连接， 从而实现对不同直径和壁厚管道的定型。
[0019] 所述多组定型滚轮组的结构相同， 各定型滚轮组包括内定型滚轮和外定型滚轮 ， 内定型滚轮设于管胚内侧， 外定型滚轮设于管胚外侧， 内定型滚轮和外定型 滚轮之间设于约束弹簧。
[0020] 上述聚合物管道喷流堆砌成型装置使用吋， 其原理是： 成型吋， 挤出机提供的 聚合物熔体经由喷嘴， 喷流到约束空间中， 在熔体喷流的同吋， 局部压延机构 压延熔体旋转， 在管径定型调整机构中定型滚轮的弓 I导下先成型一段管道后， 接着管道在旋转牵弓 I机构和管径定型调整机构的共同作用下螺旋向前运动， 成 型连续的管道。 其中， 管坯最初是由局部压延机构中的两个压延辊驱动旋转， 由螺旋牵引件与管道表面之间的螺纹传动而连续成型管道。
发明的有益效果
有益效果
[0021] 本发明相对于现有技术， 具有以下有益效果：
[0022] 1、 利用本聚合物管道喷流堆砌成型方法及装置可成型大口径聚合物管道。
[0023] 2、 相对于传统的聚合物挤出成型， 本聚合物管道喷流堆砌成型装置不需要挤 出模具， 所成型大口径管道的质量可达到甚至优于利用模具成型的管道。
[0024] 3、 利用本聚合物管道喷流堆砌成型方法及装置成型管道吋， 埋入式喷嘴喷流 聚合物熔体产生局部压力， 使先成型的管道与后成型的管道之间充分融合到一 起， 大大减少熔接痕的产生， 故成型的聚合物管道力学性能比缠绕熔接成型的 得到根本提高。
[0025] 4、 利用本聚合物管道喷流堆砌成型方法能柔性成型管道， 即无需改变挤出机
， 仅局部改变关键零件的相对位置， 可生产多种不同口径和壁厚的管道。
[0026] 5、 相对于传统的大口径管道成型， 利用本聚合物管道喷流堆砌成型方法及装 置成型管道吋， 由于喷流熔接和压延局部定型作用， 沿管道周向成型， 管道周 向强度大于轴向强度， 具有一定的自增强作用。
[0027] 6、 利用本聚合物管道喷流堆砌成型方法及装置， 大口径聚合物管道直接由熔 体制备， 不需经过中间环节， 相对于缠绕成型， 能降低能耗； 同吋利用较小塑 化能力的挤出机成型大口径管道， 减少大型设备的投资； 成型过程中无需模具
， 故降低产品成本。
对附图的简要说明
附图说明
[0028] 图 1为本聚合物管道喷流堆砌成型装置的结构示意图。
[0029] 图 2为图 1中预埋式的供料喷嘴的局部放大图。
[0030] 图 3为局部压延机构与供料喷嘴的位置关系示意图。
[0031] 图 4为管径定型调整机构的原理图。 实施该发明的最佳实施例
本发明的最佳实施方式
[0032] 下面结合实施例， 对本发明作进一步的详细说明， 但本发明的实施方式不限于 此。
实施例
[0033] 本实施例一种聚合物管道喷流堆砌成型方法及装置， 其熔体供给装置是挤出机
[0034] 如图 1或 4所示， 本喷流堆砌成型装置包括挤出机 1 (作为聚合物熔体供给装置 ) 、 预埋式的供料喷嘴 3 (作为熔体喷射机构） 、 主动压延辊 6、 从动压延辊 7、 驱动电机 2、 旋转牵引机构、 机架 12和管径定型调整机构。 主动压延辊 6、 从动 压延辊 7和驱动电机 2组成局部压延机构； 旋转牵弓 I机构由螺旋牵弓 I件 10和支撑 杆 9组成； 预埋式供料喷嘴 3与挤出机 1相连接； 供料喷嘴上还设有挡板 15， 且预 埋式供料喷嘴固定在挡板上； 主动压延辊 6、 从动压延辊 7分别固定在安装板 4上 ， 主动压延辊 6与驱动电机连接， 可作主动旋转运动， 且主动压延辊 6、 从动压 延辊 7可以沿聚合物管道径向移动； 管径定型调整机构中， 定型滚轮组 8在调整 件 13作用下能沿管径方向调整位置， 如图 1所示； 挤出机 1和安装板 4固定在机架 12上。
[0035] 挤出机 1挤出一定压力和温度的高聚物熔体， 熔体经供料喷嘴 3喷流到约束空间
(由主动压延辊 6、 从动压延辊 7和挡板 15构成， 如图 2或图 3所示） 内， 且供料 喷嘴伸入到熔体内部， 并借助两个压延辊约束及压延定型作用， 同吋在管径定 型调整机构的作用下， 被压延的塑料熔体沿着管径定型调整机构中定型滚轮组 8 先形成一段聚合物管道， 该段管道在螺旋牵弓 I件 10及管径定型调整机构的共同 作用下向前螺旋运动， 后续聚合物熔体继续喷流堆砌在两个压延辊和初始聚合 物管道之间； 成型吋， 供料喷嘴固定不动， 主动压延辊 6和从动压延辊 7转动， 在压力的作用下， 先成型的管道与后续喷流的熔体充分融合在一起， 冷却定型 后形成连续的聚合物管道 11。 当成型所要的一段聚合物管道后， 切割装置切断 管道。 如此循环， 成型一定长度的聚合物管道。 局部压延机构上方还设有调节 管壁厚度用的调位零件 5， 当聚合管道的尺寸如管径、 壁厚变化吋， 可通过分别 调整主动压延辊 6、 从动压延辊 7、 螺旋牵引件及定型滚轮组 8在安装板上的位置 ， 同吋调整供料喷嘴 3的位置， 可实现成型不同规格的管道。
如上所述， 便可较好地实现本发明， 上述实施例仅为本发明的较佳实施例， 并 非用来限定本发明的实施范围； 即凡依本发明内容所作的均等变化与修饰， 都 为本发明权利要求所要求保护的范围所涵盖。

Claims

权利要求书
一种聚合物管道喷流堆砌成型方法， 其特征在于， 在螺旋缠绕堆砌成 型过程中， 通过在已形成的管胚中埋入熔体， 结合熔体产生的喷流熔 接作用和局部压延的定型作用， 连续形成管道。
一种实现权利要求 1所述方法的聚合物管道喷流堆砌成型装置， 其特 征在于， 包括挤出机、 熔体喷射机构、 局部压延机构和管径定型调整 机构， 熔体喷射机构设于挤出机的挤出末端， 且熔体喷射机构埋入已 形成的管胚中， 局部压延机构和管径定型调整机构分布于管胚圆周方 向的管壁上， 且局部压延机构设于熔体喷射机构对应的位置， 熔体喷 射机构位于管壁内， 局部压延机构位于管壁外， 局部压延机构和熔体 喷射机构之间形成约束空间。
根据权利要求 2所述一种聚合物管道喷流堆砌成型装置， 其特征在于 ， 所述熔体喷射机构为预埋式的供料喷嘴。
根据权利要求 2所述一种聚合物管道喷流堆砌成型装置， 其特征在于 ， 所述挤出机底部设有机架， 位于挤出机挤出末端的机架一侧设有安 装板， 熔体喷射机构、 局部压延机构和管径定型调整机构分别安装于 安装板上。
根据权利要求 4所述一种聚合物管道喷流堆砌成型装置， 其特征在于 ， 所述管胚外周还设有旋转牵引机构， 旋转牵引机构包括螺旋牵引件 和支撑杆， 管胚外周分布有多个螺旋牵引件， 各螺旋牵引件分别通过 相应的支撑杆与安装板连接。
根据权利要求 2所述一种聚合物管道喷流堆砌成型装置， 其特征在于 ， 所述局部压延机构包括主动压延辊、 从动压延辊和驱动电机， 主动 压延辊和从动压延辊分别设于管胚的内外两侧， 主动压延辊与驱动电 机连接， 熔体喷射机构设于主动压延辊和从动压延辊之间的空间内。 根据权利要求 6所述一种聚合物管道喷流堆砌成型装置， 其特征在于 ， 所述局部压延机构上方还设有调节管壁厚度用的调位零件。
根据权利要求 6所述一种聚合物管道喷流堆砌成型装置， 其特征在于 ， 所述主动压延辊和从动压延辊还外接温度调节系统。
[权利要求 9] 根据权利要求 2所述一种聚合物管道喷流堆砌成型装置， 其特征在于
， 所述管径定型调整机构包括多组定型滚轮组和调整件， 各定型滚轮 组和调整件一一对应并沿着管胚的圆周方向分布。
[权利要求 10] 根据权利要求 2所述一种聚合物管道喷流堆砌成型装置， 其特征在于 ， 所述多组定型滚轮组的结构相同， 各定型滚轮组包括内定型滚轮和 外定型滚轮， 内定型滚轮设于管胚内侧， 外定型滚轮设于管胚外侧， 内定型滚轮和外定型滚轮之间设于约束弹簧。
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