WO2021120441A1 - 一种用于制备复合型材的模具 - Google Patents

一种用于制备复合型材的模具 Download PDF

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Publication number
WO2021120441A1
WO2021120441A1 PCT/CN2020/082351 CN2020082351W WO2021120441A1 WO 2021120441 A1 WO2021120441 A1 WO 2021120441A1 CN 2020082351 W CN2020082351 W CN 2020082351W WO 2021120441 A1 WO2021120441 A1 WO 2021120441A1
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Prior art keywords
melt
mold
template
outlet
inlet
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PCT/CN2020/082351
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English (en)
French (fr)
Inventor
唐道远
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安徽森泰木塑集团股份有限公司
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Publication of WO2021120441A1 publication Critical patent/WO2021120441A1/zh

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    • 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
    • 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
    • B29C48/151—Coating hollow 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
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • 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
    • B29L2031/00—Other particular articles
    • B29L2031/10—Building elements, e.g. bricks, blocks, tiles, panels, posts, beams

Definitions

  • the invention relates to a mold for preparing composite profiles, and belongs to the technical field of molds.
  • Metal profiles are very common in the construction field, such as aluminum alloy profiles. Bare metal profiles are prone to corrosion; painted metal profiles are also prone to physical damage and damage the coating, which is also prone to corrosion.
  • a better solution is to install a plastic sleeve on the surface of the metal profile, so that the metal profile can be better protected.
  • the plastic sleeve often cracks, which makes it difficult to provide long-term protection.
  • the European Patent Granted Publication No. EP2620276B1 discloses a structural member, which includes an integral extruded part including a metal core, a covering layer containing polyolefin resin and wood flour, and the covering layer Formed on the outer surface of the metal core; and an adhesive layer formed between the cover layer and the core, wherein the adhesive layer contains at least alpha-olefin and A copolymer prepared by polymerizing an epoxy-containing unsaturated monomer, wherein the metal core is a hollow-shaped aluminum core with a flat or special-shaped cross-section, and the thickness is 1.1-3.0mm, and the thickness of the covering layer is 0.7-5mm
  • the covering layer contains 5-50 parts by weight of wood powder relative to 100 parts by weight of the polyolefin resin, the thickness of the adhesive layer is 0.05-0.5 mm, and the adhesive layer and the covering layer are simultaneously extruded forming.
  • this patent document does not disclose how to simultaneously extrude the adhesive layer and the covering layer, but only provides a schematic diagram,
  • the present invention aims to solve the above-mentioned problems, thereby providing a mold for preparing composite profiles. Through the mold, the adhesive layer and the coating layer can be co-extruded together on the outer periphery of the metal core material.
  • a mold for preparing a composite profile is formed by assembling and fixing a plurality of mold plates, and has a cavity, a melt channel, a melt channel and a mold outlet; the multiple mold plates at least include an inlet template , Melt template, melt template and outlet template; the end face of the inlet template is provided with an inlet for the metal core material, and the mold outlet is set on the end face of the outlet template; the melt channel includes a melt inlet, The melt cavity, the melt flow channel and the melt outlet, the melt inlet, the melt cavity and the melt flow channel are arranged on the melt template, and the melt outlet is arranged on the melt template or the melt template
  • the melt channel includes a melt inlet, a melt cavity, a melt flow channel and a melt outlet, the melt inlet, the melt cavity and the melt flow channel are arranged on the melt template, and the melt The material outlet is arranged on the melt template or the outlet template; a melt casting space is formed between the melt outlet and the cavity; a melt casting space is formed between the melt
  • the outlet template and the melt template are the same die plate.
  • the thickness of the molten glue casting space is not less than 100 ⁇ m.
  • the thickness of the molten material casting space is not less than 2 mm and not more than 20 mm.
  • the melt casting space is arranged in front of the melt casting space, with an interval of 5-50 mm between them.
  • the melt inlet is arranged on the side of the mold, and the melt inlet is arranged above the mold.
  • the melt inlet is arranged above the mold, and the melt inlet is arranged on the side of the mold.
  • the melt casting space and the melt casting space are set at a certain interval, 0.5-2cm.
  • the setting of this interval can promote the coating layer and the melt layer to produce a certain degree at their interface. Because of this interval, the melt layer is first extruded on the metal core material, and a certain degree of curing occurs, but the curing is incomplete; because the material components of the covering layer and the melt layer are similar to each other Therefore, in the high-temperature and high-pressure mold cavity environment, the cladding layer and the melt layer have a certain degree of fusion at their interface; this fusion can promote the cladding layer to be more firmly attached to the metal core material.
  • Figure 1 is a schematic diagram of the structure of a product prepared by the mold of the present invention.
  • Figure 2 is a schematic diagram of the mold structure of the present invention.
  • Figure 3 is a schematic diagram of the structure of the melt template of the mold of the present invention.
  • Figure 4 is a schematic diagram of the structure of the melt template of the mold of the present invention.
  • a composite profile includes a metal core material 1 made of aluminum alloy, an adhesive layer 2 formed by hot melt adhesive, and a covering layer 3 made of plastic material.
  • the mold is assembled and fixed by multiple mold plates, and has a cavity 41, a melt channel 42, a melt channel 43 and a mold outlet 44;
  • the multiple mold plates at least include Import template 401, melt template 402, melt template 403, and exit template 404;
  • the end face of said import template 401 is provided with an inlet for the metal core material 1, and the mold outlet 44 is set on the end face of said outlet template 404;
  • the melt channel 42 includes a melt inlet 42a, a melt cavity 42b, a melt flow channel 42c, and a melt outlet.
  • the melt inlet 42a, the melt cavity 42b, the melt flow channel 42c and the melt outlet are arranged in the melt On the template 402;
  • the melt channel 43 includes a melt inlet 43a, a melt cavity 43b, a melt flow channel 43c and a melt outlet, the melt inlet 43a, a melt cavity 43b and a melt outlet are arranged in the melt On the template 403;
  • a melt casting space 43e is formed between the melt outlet and the cavity 41;
  • a melt casting space 42e is formed between the melt outlet and the cavity 41.
  • the mold also includes a water jacket 405, which is arranged behind the exit template 404, and its main function is to cool the workpiece-composite profile.
  • the first extruder is docked with the melt channel 42 of the mold; the second extruder is docked with the melt channel 42 of the mold;
  • the maleic anhydride grafted PE homopolymer (hot-melt adhesive) into the first extruder.
  • the molten hot-melt adhesive is obtained, and the molten hot-melt adhesive is Squeeze into the melt channel 42 and exit from the melt outlet of the mold 4, enter the melt casting space 42e, and cover the outer peripheral surface of the hot metal core material 1 in the melt casting space 42e to form a glue-containing metal Core material; as the metal core material 1 is fed, the glue-containing metal core material is also fed forward at the same time; the temperature of the hot melt adhesive in the melt channel 42 is controlled to 210°C; the screw speed is when the hot melt adhesive is extruded 5.5r/min;
  • the molten raw materials are obtained.
  • the molten raw materials are extruded into the melt channel 43 and are led out from the melt outlet of the die 4. Enter the melt casting space 43e, and cover the outer peripheral surface of the rubber-containing metal core material in the melt casting space 43e to form the blank of the composite profile; as the metal core material 1 is fed, the blank is also fed forward at the same time ;
  • the blank of the composite profile is extruded from the exit 44 of the die to form the composite profile.
  • a mold for preparing composite profiles The only difference from the first embodiment is that the melt inlet is arranged on the side of the mold, and the melt inlet is arranged above the mold.
  • a mold for preparing composite profiles The only difference from the first embodiment is that the melt inlet is arranged above the mold, and the melt inlet is arranged on the side of the mold.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

本发明涉及一种用于制备复合型材的模具，属于模具技术领域。所述模具由多块模具板拼装后固定而成，具有型腔、熔胶通道、熔料通道和模具出口；所述的多个模具板至少包括进口模板、熔胶模板、熔料模板和出口模板；所述进口模板的端面上设有金属芯材的进口，模具出口设置在所述的出口模板的端面上。本发明通过将熔料流延空间和熔胶流延空间设置为一定的间隔，0.5~2cm，这个间隔的设置，可促使包覆层与熔胶层在它们的界面产生一定程度的融合；这种融合可促使包覆层更牢固地附着在金属芯材上。

Description

一种用于制备复合型材的模具 技术领域
本发明涉及一种用于制备复合型材的模具，属于模具技术领域。
背景技术
金属型材在建筑领域使用非常普遍，如铝合金型材等。裸露的金属型材容易发生锈蚀；经过涂装处理的金属型材也容易受到物理性的损伤，使涂层破坏，这样也容易发生锈蚀。一个较优的方案是在金属型材外表安装一个塑料的套管，这样就能使金属型材受到较好的保护。但由于金属和塑料的材料性质不同，在环境温度不同时，由于受温度影响的胀缩不同步，使得塑料套管经常开裂，从而难以长久地提供保护。
授权公告号为EP2620276B1的欧洲专利，公开了一种构造构件，它包括整体挤压成型件，所述整体挤压成型件包括金属芯，包含聚烯烃树脂和木粉的覆盖层，所述覆盖层形成在所述金属芯的外表面上；以及粘合剂层，所述粘合层形成在所述覆盖层与所述芯之间，其中所述粘合剂层包含通过至少将α-烯烃和含环氧基的不饱和单体聚合而制备的共聚物，所述金属芯为中空形状的铝芯，平板状或异形截面，厚度为1.1～3.0mm，所述覆盖层的厚度为0.7～5mm，所述覆盖层含有相对于100重量份的聚烯烃树脂5～50重量份的木粉，所述粘合层的厚度为0.05～0.5mm，所述粘合层与所述覆盖层同时挤出成型。但是该专利文献并没有公开如何使粘合层与所述覆盖层同时挤出成型，仅仅提供了一种示意图，致使本领域技术人员实施起来难度很大。
发明概述
技术问题
问题的解决方案
技术解决方案
本发明要解决上述问题，从而提供一种用于制备复合型材的模具。通过该模具，可以方便地使胶黏剂层和包覆层共同挤包在所述的金属芯材的外周。
本发明解决上述问题的技术方案如下：
一种用于制备复合型材的模具，所述模具由多块模具板拼装后固定而成，具有型腔、熔胶通道、熔料通道和模具出口；所述的多个模具板至少包括进口模板、熔胶模板、熔料模板和出口模板；所述进口模板的端面上设有金属芯材的进口，模具出口设置在所述的出口模板的端面上；所述熔胶通道包括熔胶进口、熔胶腔、熔胶流道和熔胶出口，熔胶进口、熔胶腔和熔胶流道设置在所述的熔胶模板上，熔胶出口设置在熔胶模板上或者设置在熔料模板上；所述熔料通道包括熔料进口、熔料腔、熔料流道和熔料出口，所述熔料进口、熔料腔和熔料流道设置在所述的熔料模板上，熔料出口设置在熔料模板上或者设置在出口模板上；熔料出口与型腔之间形成一熔料流延空间；熔胶出口与型腔之间形成一熔胶流延空间。
作为优选，所述出口模板和熔料模板为同一块模具板。
作为优选，所述熔胶流延空间的厚度不小于100μm。
作为优选，所述熔料流延空间的厚度，不小于2mm，不超过20mm。
作为优选，在所述模具的工件进给方向上，所述熔胶流延空间设置在所述熔料流延空间的前方，它们之间间隔5～50mm。
作为优选，所述熔胶进口设置在模具的侧方，所述熔料进口设置在所述模具的上方。
作为优选，所述熔胶进口设置在模具的上方，所述熔料进口设置在所述模具的侧方。
发明的有益效果
有益效果
本发明具有以下有益效果：
本发明的模具中，通过将熔料流延空间和熔胶流延空间设置为一定的间隔，0.5～2cm，这个间隔的设置，可促使包覆层与熔胶层在它们的界面产生一定程度的混融；因为这个间隔，熔胶层先挤包在金属芯材上，并产生了一定程度的固化，但固化不完全；由于包覆层与熔胶层的材料组分本身具有一定的相似性，因此在高温高压的模腔环境中，包覆层与熔胶层在它们的界面产生一定程度的融 合；这种融合可促使包覆层更牢固地附着在金属芯材上。
对附图的简要说明
附图说明
图1是适用本发明模具所制备的产品的结构示意图；
图2是本发明的模具结构示意图；
图3是本发明的模具的熔胶模板的结构示意图；
图4是本发明的模具的熔料模板的结构示意图；
图中，1-金属芯材，2-包覆层，3-胶黏剂层；
41-型腔，42-熔胶通道，43-熔料通道，44-模具的出口；
42a-熔胶进口，42b-熔胶腔，42c-熔胶流道，42e-熔胶流延空间；
43a-熔料进口，43b-熔料腔，43c-熔料流道，43e-熔料流延空间；
401-进口模板，402-熔胶模板，403-熔料模板，404-进口模板，405-水套。
发明实施例
本发明的实施方式
以下结合附图对本发明进行进一步的说明。
本具体实施方式仅仅是对本发明的解释，并不是对本发明的限制，本领域技术人员在阅读了本发明的说明书之后所做的任何改变，只要在权利要求书的范围内，都将受到专利法的保护。
实施例一
如图1所示，一种复合型材，包括铝合金材质的金属芯材1，热熔胶形成的胶黏剂层2和塑料材质的包覆层3。
制造上述复合型材的模具结构具体如下：
如图2-4所示，所述模具由多块模具板拼装后固定而成，具有型腔41、熔胶通道42、熔料通道43和模具出口44；所述的多个模具板至少包括进口模板401、熔胶模板402、熔料模板403和出口模板404；所述进口模板401的端面上设有金属芯材1的进口，模具出口44设置在所述的出口模板404的端面上；所述熔胶通道42包括熔胶进口42a、熔胶腔42b、熔胶流道42c和熔胶出口，熔胶进口42a、熔胶腔42b、熔胶流道42c和熔胶出口设置在熔胶模板402上；所述熔料通道43包括熔 料进口43a、熔料腔43b、熔料流道43c和熔料出口，所述熔料进口43a、熔料腔43b和熔料出口设置在熔料模板403上；熔料出口与型腔41之间形成一熔料流延空间43e；熔胶出口与型腔41之间形成一熔胶流延空间42e。
所述模具还包括一个水套405，所述水套405设置在出口模板404的后方，它的主要作用是给工件-复合型材降温。
本实施例复合型材的制备方法如下：
(1)准备工作：
采用两台挤出机，第一台挤出机与模具的熔胶通道42对接；第二台挤出机与模具的熔料通道42对接；
(2)导入金属芯材：
将金属芯材1预热，形成热态的金属芯材，将之导入到模具的型腔中；
(3)熔胶挤出：
将马来酸酐接枝PE的均聚物(热熔胶)投入第一台挤出机中，经第一台挤出机的作用，得到熔融态的热熔胶，熔融态的热熔胶被挤入熔胶通道42，从模具4的熔胶出口导出，进入熔胶流延空间42e，在熔胶流延空间42e中覆盖在热态的金属芯材1的外周表面，形成一含胶金属芯材；随着金属芯材1的送进，含胶金属芯材也同时向前送进；热熔胶在熔胶通道42中的温度控制为210℃；热熔胶挤出时，螺杆转速为5.5r/min；
(4)熔料挤出：
将原料及添加剂投入第二台挤出机中，经第二台挤出机的作用，得到熔融态的原料，熔融态的原料被挤入熔料通道43，从模具4的熔料出口导出，进入熔料流延空间43e，在熔料流延空间43e中覆盖在含胶金属芯材的外周表面，形成复合型材的坯料；随着金属芯材1的送进，坯料也同时向前送进；
(5)挤出：
将复合型材的坯料从模具的出口44挤出，形成复合型材。
实施例二
一种用于制备复合型材的模具，与实施例一不同之处仅在于，所述熔胶进口设置在模具的侧方，所述熔料进口设置在所述模具的上方。
实施例三
一种用于制备复合型材的模具，与实施例一不同之处仅在于，所述熔胶进口设置在模具的上方，所述熔料进口设置在所述模具的侧方。

Claims (7)

  1. 一种用于制备复合型材的模具，其特征在于：所述模具由多块模具板拼装后固定而成，具有型腔(41)、熔胶通道(42)、熔料通道(43)和模具出口(44)；所述的多个模具板至少包括进口模板(401)、熔胶模板(402)、熔料模板(403)和出口模板(404)；所述进口模板(401)的端面上设有金属芯材的进口，模具出口(44)设置在所述的出口模板(404)的端面上；所述熔胶通道(42)包括熔胶进口(42a)、熔胶腔(42b)、熔胶流道(42c)和熔胶出口，熔胶进口(42a)、熔胶腔(42b)和熔胶流道(42c)设置在所述的熔胶模板(402)上，熔胶出口设置在熔胶模板(402)上或者设置在熔料模板(403)上；所述熔料通道(43)包括熔料进口(43a)、熔料腔(43b)、熔料流道(43c)和熔料出口，所述熔料进口(43a)、熔料腔(43b)和熔料流道(43c)设置在所述的熔料模板(403)上，熔料出口设置在熔料模板(403)上或者设置在出口模板(404)上；熔料出口与型腔(41)之间形成一熔料流延空间(43e)；熔胶出口与型腔(41)之间形成一熔胶流延空间(42e)。
  2. 根据权利要求1所述的一种模具，其特征在于：所述出口模板(404)和熔料模板(403)为同一块模具板。
  3. 根据权利要求1所述的一种模具，其特征在于：所述熔胶流延空间(42e)的厚度不小于100μm。
  4. 根据权利要求1所述的一种模具，其特征在于：所述熔料流延空间(43e)的厚度，不小于2mm，不超过20mm。
  5. 根据权利要求1所述的一种模具，其特征在于：在所述模具的工件进给方向上，所述熔胶流延空间(42e)设置在所述熔料流延空间(43e)的前方，它们之间间隔5～20mm。
  6. 根据权利要求1所述的一种模具，其特征在于：所述熔胶进口(42a)设置在模具的侧方，所述熔料进口(43a)设置在所述模具的 上方。
  7. 根据权利要求1所述的一种模具，其特征在于：所述熔胶进口(42a)设置在模具的上方，所述熔料进口(43a)设置在所述模具的侧方。
PCT/CN2020/082351 2019-12-18 2020-03-31 一种用于制备复合型材的模具 WO2021120441A1 (zh)

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CN112157860A (zh) * 2020-08-24 2021-01-01 南通博联材料科技有限公司 一种高分子材料包覆金属制品的制造方法
CN113320116B (zh) * 2021-06-18 2023-05-26 无锡井上华光汽车部件有限公司 一种变截面的挤出模具及挤出方法

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