CN206605752U - A pipe extrusion head with gas assist - Google Patents
A pipe extrusion head with gas assist Download PDFInfo
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- CN206605752U CN206605752U CN201720229714.9U CN201720229714U CN206605752U CN 206605752 U CN206605752 U CN 206605752U CN 201720229714 U CN201720229714 U CN 201720229714U CN 206605752 U CN206605752 U CN 206605752U
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- 238000001125 extrusion Methods 0.000 title claims abstract description 11
- 238000007723 die pressing method Methods 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 238000005245 sintering Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 239000000155 melt Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000000748 compression moulding Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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- Extrusion Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
本实用新型公开了一种具有气体辅助的管材挤出机头，包括机头体，所述机头体外部设置有加热圈，所述机头体上还设置第一气嘴，所述机头体空腔内设置有分流锥支架，所述分流锥支架内设置分流锥，所述分流锥支架还连接芯棒，与所述芯棒对应设置的口模，所述口模外部设置有将口模固定在机头体上的口模压板，所述口模压板上设置有用于调节芯棒和口模距离的调节螺母，其特征在于，还包括气室，所述气室包括气室外套管、多孔嵌管、气室密封圈和连接头，所述气室外套管一端具有台阶孔，所述多孔嵌管固定在所述气室外套管的台阶孔内，所述气室外套管、连接头还通过内螺纹与口模连接，所述气室外套管上还设置有第二气嘴。该管材挤出机头生产效率高、能耗小。
The utility model discloses a gas-assisted pipe extruding head, which comprises a head body, a heating ring is arranged outside the head body, a first gas nozzle is also arranged on the head body, and the head A splitter cone bracket is arranged in the cavity of the body, and a splitter cone is arranged in the splitter cone bracket, and the splitter cone bracket is also connected to a mandrel, and a die corresponding to the mandrel is arranged, and a mouthpiece is arranged on the outside of the die The die is fixed on the die pressing plate on the machine head body, and the die pressing plate is provided with an adjusting nut for adjusting the distance between the mandrel and the die, and is characterized in that it also includes an air chamber, and the air chamber includes an air outer casing , a porous embedded pipe, an air chamber seal ring and a connector, one end of the outer sleeve of the air has a step hole, the porous embedded pipe is fixed in the stepped hole of the outer sleeve of the air, the outer sleeve of the air, the connecting The head is also connected with the die through the internal thread, and the second air nozzle is also arranged on the outer casing of the air. The pipe extrusion head has high production efficiency and low energy consumption.
Description
技术领域technical field
本实用新型涉及管材挤出机头领域，特别涉及一种具有气体辅助的管材挤出机头。The utility model relates to the field of pipe extruder heads, in particular to a pipe extruder head with gas assist.
背景技术Background technique
传统的管材成型工艺是将塑料原料热熔后通过机头口模挤出成管坯，再经定型模冷却定型，生产出所需截面尺寸的管材。生产中经常出现的不良现象是管坯的“巴拉斯效应”，即出模膨胀，严重影响了管材质量，且挤出生产效率低，能耗大。The traditional pipe forming process is to heat-melt the plastic raw material and extrude it into a pipe blank through the die of the machine head, and then cool and shape it through the shaping die to produce the pipe with the required cross-sectional size. The unfavorable phenomenon that often occurs in the production is the "Ballas effect" of the tube blank, that is, the expansion of the mold, which seriously affects the quality of the tube, and the extrusion production efficiency is low and the energy consumption is large.
实用新型内容Utility model content
本实用新型在于克服现有技术的上述不足，提供一种能够很好的克服“巴拉斯效应”、生产效率高、能耗小的具有气体辅助的管材挤出机头。The utility model aims at overcoming the above-mentioned shortcomings of the prior art, and provides a gas-assisted pipe extruder head which can well overcome the "Ballas effect", has high production efficiency and low energy consumption.
为了实现上述实用新型目的，本实用新型采用的技术方案是：In order to realize above-mentioned utility model purpose, the technical scheme that the utility model adopts is:
一种具有气体辅助的管材挤出机头，包括机头体，所述机头体外部设置有加热圈，所述机头体上还设置第一气嘴，所述机头体空腔内设置有分流锥支架，所述分流锥支架内设置分流锥，所述分流锥支架还连接芯棒，与所述芯棒对应设置的口模，所述口模外部设置有将口模固定在机头体上的口模压板，所述口模压板上设置有用于调节芯棒和口模距离的调节螺母，其特征在于，还包括气室，所述气室包括气室外套管、多孔嵌管、气室密封圈和连接头，所述气室外套管一端具有台阶孔，所述多孔嵌管固定在所述气室外套管的台阶孔内，所述气室外套管、连接头还通过内螺纹与口模连接，所述气室外套管上还设置有第二气嘴。A pipe extrusion head with gas assist, comprising a head body, a heating ring is arranged outside the head body, a first gas nozzle is arranged on the head body, and a cavity of the head body is arranged There is a splitter cone bracket, and a splitter cone is arranged in the splitter cone bracket, and the splitter cone bracket is also connected to a mandrel, and a die is arranged corresponding to the mandrel, and the die is externally provided with a die to fix the die on the machine head The die pressing plate on the body, the die pressing plate is provided with an adjusting nut for adjusting the distance between the mandrel and the die, it is characterized in that it also includes an air chamber, and the air chamber includes an air outer casing, a porous embedded pipe, Gas chamber sealing ring and connector, one end of the gas outer casing has a stepped hole, the porous embedded pipe is fixed in the stepped hole of the gas outer casing, and the gas outer casing and the connecting head are also connected through internal threads Connected with the die, the outer casing of the gas is also provided with a second gas nozzle.
进一步地，所述气室外套管与所述口模之间还设置有气室密封圈，用于形成封闭的气室。Further, an air chamber sealing ring is provided between the air outer sleeve and the die to form a closed air chamber.
进一步地，所述芯棒还连接拉杆，所述拉杆另一端连接第一螺母，所述第一螺母与第二螺母之间设置有密封圈。Further, the mandrel is also connected to a pull rod, and the other end of the pull rod is connected to a first nut, and a sealing ring is arranged between the first nut and the second nut.
进一步地，所述机头体上还设置有紧固螺钉，用于对所述机头体进行紧固。Further, the machine head body is also provided with fastening screws for fastening the machine head body.
进一步地，所述多孔嵌管为金属粉末烧结而成的多孔不锈钢金属套。Further, the porous embedded pipe is a porous stainless steel metal sleeve formed by sintering metal powder.
进一步地，所述金属粉末的粒径为0-5um。Further, the particle size of the metal powder is 0-5um.
与现有技术相比，本实用新型的有益效果Compared with the prior art, the utility model has the beneficial effects
本实用新型的具有气体辅助的管材挤出机头通过气体控制系统在口模出口段形成气垫膜，让塑料熔体和口模之间不接触，使传统的非滑移粘着剪切口模挤出方式变为气垫完全滑移非粘着剪切口模挤出方式，从而基本消除了管材的出模膨胀，提高了制品形状稳定性及尺寸精度。进一步地，气垫层减少了熔体流动阻力，实现了低压条件下的高速挤出，从而在保证产品质量的前提下提高了管材的生产效率，降低了成本。The gas-assisted pipe extruder head of the utility model forms an air cushion film at the outlet section of the die through the gas control system, so that there is no contact between the plastic melt and the die, and the traditional non-slip adhesion shear die is extruded The output method is changed to the air cushion complete sliding non-adhesive shear die extrusion method, which basically eliminates the die expansion of the pipe, and improves the shape stability and dimensional accuracy of the product. Furthermore, the air cushion layer reduces the flow resistance of the melt and realizes high-speed extrusion under low pressure conditions, thereby improving the production efficiency of the pipe and reducing the cost under the premise of ensuring product quality.
附图说明Description of drawings
图1所示为本实用新型的具有气体辅助的管材挤出机头结构示意图。Fig. 1 is a schematic diagram showing the structure of the pipe extruder head with gas assist of the present invention.
附图标记：1-机头体，2-分流锥，3-分流锥支架，4-加热圈，5-芯棒，6-螺钉，7-口模压板，8-口模，9-气室密封圈，10-气嘴，11-联接头，12-气室外套管，13-多孔嵌管，14-拉杆，15-螺母，16-密封圈，17-螺母，18-调节螺钉，19-气嘴Reference signs: 1-head body, 2-distributor cone, 3-distributor cone support, 4-heating ring, 5-mandrel, 6-screw, 7-die platen, 8-die, 9-air chamber Sealing ring, 10-gas nozzle, 11-coupling head, 12-gas outer casing, 13-porous embedded pipe, 14-tie rod, 15-nut, 16-sealing ring, 17-nut, 18-adjusting screw, 19- Gas nozzle
具体实施方式detailed description
下面结合具体实施方式对本实用新型作进一步的详细描述。但不应将此理解为本实用新型上述主题的范围仅限于以下的实施例，凡基于本实用新型内容所实现的技术均属于本实用新型的范围。The utility model will be further described in detail below in conjunction with specific embodiments. However, it should not be understood that the scope of the above-mentioned themes of the present utility model is limited to the following embodiments, and all technologies realized based on the content of the present utility model belong to the scope of the present utility model.
实施例1：Example 1:
图1所示为本实用新型的具有气体辅助的管材挤出机头结构示意图，包括机头体1，所述机头体外部设置有加热圈4，所述机头体1上还设置第一气嘴19，所述机头体1空腔内设置有分流锥支架3，所述分流锥支架3内设置分流锥2，所述分流锥支架3还连接芯棒5，与所述芯棒5对应设置的口模8，所述口模8外部设置有将口模8固定在机头体1上的口模压板7，所述口模压板7上设置有用于调节芯棒5和口模8距离的调节螺母18，其特征在于，还包括气室，所述气室包括气室外套管12、多孔嵌管13、气室密封圈9和连接头11，所述气室外套管一端具有台阶孔，所述多孔嵌管13固定在所述气室外套管12的台阶孔内，所述气室外套管12、连接头11还通过内螺纹与口模8连接，所述气室外套管上还设置有第二气嘴 10。Fig. 1 is a schematic diagram showing the structure of a gas-assisted pipe extrusion head of the present invention, including a head body 1, a heating ring 4 is arranged on the outside of the head body, and a first Air nozzle 19, the head body 1 cavity is provided with a splitter cone bracket 3, the splitter cone bracket 3 is provided with a splitter cone 2, and the splitter cone bracket 3 is also connected to the mandrel 5, and is connected with the mandrel 5 Corresponding to the die 8 provided, the die 8 is externally provided with a die pressing plate 7 that fixes the die 8 on the machine head body 1, and the die pressing plate 7 is provided with a mold for adjusting the mandrel 5 and the die 8 The adjusting nut 18 of the distance is characterized in that it also includes an air chamber, and the air chamber includes an air outer casing 12, a porous embedded pipe 13, an air chamber sealing ring 9 and a connector 11, and one end of the air outer casing has a step hole, the porous embedded pipe 13 is fixed in the step hole of the gas outer casing 12, the gas outer casing 12 and the connector 11 are also connected to the die 8 through internal threads, and the gas outer casing A second gas nozzle 10 is also provided.
本实用新型的具有气体辅助的管材挤出机头通过气体控制系统在口模出口段形成气垫膜，让塑料熔体和口模之间不接触，使传统的非滑移粘着剪切口模挤出方式变为气垫完全滑移非粘着剪切口模挤出方式，从而基本消除了管材的出模膨胀，提高了制品形状稳定性及尺寸精度。The gas-assisted pipe extruder head of the utility model forms an air cushion film at the outlet section of the die through the gas control system, so that there is no contact between the plastic melt and the die, and the traditional non-slip adhesion shear die is extruded The output method is changed to the air cushion complete sliding non-adhesive shear die extrusion method, which basically eliminates the die expansion of the pipe, and improves the shape stability and dimensional accuracy of the product.
所述气室外套管12与所述口模8之间还设置有气室密封圈9，用于形成封闭的气室。An air chamber sealing ring 9 is also arranged between the air outer casing 12 and the die 8 for forming a closed air chamber.
所述芯棒5还连接拉杆14，所述拉杆14另一端连接第一螺母15，所述第一螺母15与第二螺母17之间设置有密封圈16。The mandrel 5 is also connected to a pull rod 14 , the other end of the pull rod 14 is connected to a first nut 15 , and a sealing ring 16 is arranged between the first nut 15 and the second nut 17 .
所述机头体上还设置有紧固螺钉6，用于对所述机头体进行紧固。The machine head body is also provided with fastening screws 6 for fastening the machine head body.
所述多孔嵌管13为金属粉末烧结而成的多孔不锈钢金属套。所述金属粉末的粒径为0-5um。多孔嵌管13是整个机头的核心零件，该零件是粒径0.5μm金属粉末烧结而成的多孔不锈钢金属套，材料本身所具有的孔隙就是最好的气体通道，压缩气体可以经过多孔嵌管注入管内壁与流动熔体之间，形成气体薄膜。The porous embedded pipe 13 is a porous stainless steel sleeve formed by sintering metal powder. The particle size of the metal powder is 0-5um. Porous embedded tube 13 is the core part of the whole machine head. This part is a porous stainless steel metal sleeve made of sintered metal powder with a particle size of 0.5 μm. The pores of the material itself are the best gas channels, and compressed gas can pass through the porous embedded tube. Between the inner wall of the injection tube and the flowing melt, a gas film is formed.
在一个具体实施方式中，气体辅助挤出机头可分为压缩成型段和气辅成型段。In a specific embodiment, the gas-assisted extrusion head can be divided into a compression molding section and a gas-assisted molding section.
在压缩成型段：熔融塑料经挤出机进入机头体1，再经分流锥2分流，逐步压缩，通过分流锥支架3进入口模8和芯棒5构成的压缩成型段。In the compression molding section: the molten plastic enters the head body 1 through the extruder, and then is shunted by the splitter cone 2, gradually compressed, and enters the compression molding section formed by the die 8 and the mandrel 5 through the splitter cone bracket 3.
在气辅成型段：压缩空气经气嘴19、分流锥支架3、芯棒5和联接头11的内孔进入管坯，靠设在尾部的密封头(由件15、16、17组成)堵住，将管坯吹胀并紧贴在口模8和多孔嵌管13的内壁，形成管材形状。同时另一支压缩空气经气嘴10进入外套12和多孔嵌管之间的气室，经多孔嵌管的孔隙进入内壁与流动熔体之间，在多孔嵌管内壁和熔体之间形成气垫膜层，改善熔体的流动性，减少流动阻力，实现管材的气辅成型。In the gas-assisted forming section: compressed air enters the tube blank through the inner hole of the air nozzle 19, the splitter cone bracket 3, the mandrel 5 and the coupling head 11, and is blocked by the sealing head (composed of parts 15, 16, 17) at the tail. Live, inflate the tube blank and cling to the inner wall of the die 8 and the porous embedded tube 13 to form a tube shape. At the same time, another branch of compressed air enters the air chamber between the jacket 12 and the porous embedded pipe through the air nozzle 10, enters between the inner wall and the flowing melt through the pores of the porous embedded pipe, and forms an air cushion between the inner wall of the porous embedded pipe and the melt The film layer improves the fluidity of the melt, reduces flow resistance, and realizes gas-assisted molding of pipes.
同时气压调节是在多孔嵌管内壁和熔体之间形成稳定气垫膜层的关键。本实用新型机头主要有两支气路，一支是经过气嘴19进入管坯内部，另一支是经过气嘴10进入到多孔嵌管内壁与熔体之间形成气垫膜。这两支气路的气压应达到动态平衡，生产中主要通过调节气压阀来实现。At the same time, air pressure adjustment is the key to forming a stable air cushion film between the inner wall of the porous embedded pipe and the melt. The machine head of the utility model mainly has two air paths, one is to enter the inside of the pipe blank through the air nozzle 19, and the other is to enter between the inner wall of the porous embedded pipe and the melt through the air nozzle 10 to form an air cushion film. The air pressure of these two air paths should reach a dynamic balance, which is mainly realized by adjusting the air pressure valve in production.
上面结合附图对本实用新型的具体实施方式进行了详细说明，但本实用新型并不限制于上述实施方式，在不脱离本申请的权利要求的精神和范围情况下，本领域的技术人员可以作出各种修改或改型。The specific embodiment of the utility model has been described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above-mentioned embodiment, without departing from the spirit and scope of the claims of the application, those skilled in the art can make Various modifications or adaptations.
Claims (6)
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| CN201720229714.9U CN206605752U (en) | 2017-03-09 | 2017-03-09 | A pipe extrusion head with gas assist |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108237672A (en) * | 2018-01-16 | 2018-07-03 | 深圳市安特迈科技有限公司 | Extruder die head and extruder |
| CN110154357A (en) * | 2019-05-24 | 2019-08-23 | 南昌大学 | A gas-assisted thin-wall small-section pipe extrusion molding die |
| CN111936291A (en) * | 2018-01-30 | 2020-11-13 | 勃兰登堡科特布斯-森夫滕贝格工业大学 | Extrusion device and method for manufacturing carbon fiber reinforced plastic semi-finished products |
| CN120816698A (en) * | 2025-09-17 | 2025-10-21 | 天津市塑料研究所有限公司 | Thin-wall extracorporeal circulation cannula molding process and the coated die core rod assembly and equipment used |
-
2017
- 2017-03-09 CN CN201720229714.9U patent/CN206605752U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108237672A (en) * | 2018-01-16 | 2018-07-03 | 深圳市安特迈科技有限公司 | Extruder die head and extruder |
| CN108237672B (en) * | 2018-01-16 | 2020-04-07 | 深圳市安特迈科技有限公司 | Extruder die head and extruder |
| CN111936291A (en) * | 2018-01-30 | 2020-11-13 | 勃兰登堡科特布斯-森夫滕贝格工业大学 | Extrusion device and method for manufacturing carbon fiber reinforced plastic semi-finished products |
| CN110154357A (en) * | 2019-05-24 | 2019-08-23 | 南昌大学 | A gas-assisted thin-wall small-section pipe extrusion molding die |
| CN120816698A (en) * | 2025-09-17 | 2025-10-21 | 天津市塑料研究所有限公司 | Thin-wall extracorporeal circulation cannula molding process and the coated die core rod assembly and equipment used |
| CN120816698B (en) * | 2025-09-17 | 2025-12-05 | 天津市塑料研究所有限公司 | Thin-wall extracorporeal circulation intubation forming process and adopted covering machine head mouth mold core rod assembly and equipment |
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