WO2006032193A1 - A double pipe heater for hot-runner nozzle and injection nozzle - Google Patents
A double pipe heater for hot-runner nozzle and injection nozzle Download PDFInfo
- Publication number
- WO2006032193A1 WO2006032193A1 PCT/CN2005/001490 CN2005001490W WO2006032193A1 WO 2006032193 A1 WO2006032193 A1 WO 2006032193A1 CN 2005001490 W CN2005001490 W CN 2005001490W WO 2006032193 A1 WO2006032193 A1 WO 2006032193A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sleeve
- nozzle
- heating wire
- heater
- hot
- Prior art date
Links
- 238000002347 injection Methods 0.000 title abstract description 4
- 239000007924 injection Substances 0.000 title abstract description 4
- 238000010438 heat treatment Methods 0.000 claims abstract description 23
- 238000001746 injection moulding Methods 0.000 claims abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 8
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 8
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 8
- 239000000395 magnesium oxide Substances 0.000 claims description 7
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 6
- 238000005485 electric heating Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 238000012546 transfer Methods 0.000 abstract description 10
- 230000007797 corrosion Effects 0.000 abstract 1
- 238000005260 corrosion Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 238000007639 printing Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000012768 molten material Substances 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2737—Heating or cooling means therefor
Definitions
- This invention relates to injection molding systems and, more particularly, to a sleeve heater for hot runner nozzles and injection molding machine nozzles of such systems.
- heating element When processing thermoplastic polymer resin in hot runner injection molding system and injection molding machine system, heating element is usually used to heat the outer surface of the nozzle, and heat is transferred through the nozzle wall to keep the resin molten in the working range, preventing it from being too cold or overheated.
- an armored heater is generally used to heat the nozzle body.
- this heater structure has limitations. The heating element is only partially in contact with the sleeve or the nozzle body, and most of it is in the surrounding air environment, the heat transfer efficiency is less than 25%, and the heater burns will seriously affect the heating. The life of the component. _
- the main object of the present invention is to provide a heating device for processing molten material.
- the unit is easily installed outside the hot runner nozzle or the nozzle of the injection molding machine, and has high heat transfer efficiency and is easy to mass-produce and operate reliably to reduce manufacturing and maintenance costs.
- the sleeve heater of the present invention can also be installed between the outer sleeve and the inner sleeve by the thermocouple. After the wire is connected with the heating wire, it is taken out with the thermocouple through the sheath to obtain a temperature measurement signal for controlling the nozzle temperature.
- the heating wire and the magnesium oxide filling powder are tightly compressed in the sleeve by a process such as shrinking, and the dense magnesium oxide filling powder not only increases the heat transfer efficiency of the heater, but also isolates the contact between the heating wire and the air, so that the heating wire It is not oxidized at high temperatures, extending the life of the heater. There is no relative displacement between the various components of the heater, and the original performance can be maintained under the vibration condition, and the external mechanical damage resistance is strong.
- the sleeve heater and the nozzle body of the invention realize the gap matching by hand sliding, forming a complete nozzle structure; the heat transfer area is large, the heat transfer efficiency is greater than 50%, and the heating temperature is hooked, when damage occurs during use, It is also convenient to disassemble.
- Figure 1 is a cross-sectional view of a sleeve heater.
- Figure 2 is a sleeve heater with a thermocouple.
- Figure 3 is a hot runner nozzle equipped with a sleeve heater.
- Metal mesh 2. Sheath, 3. Lead rod, 4. Electric wire, 5. Magnesium oxide filled powder, 6. Metal outer sleeve, 7. Metal inner sleeve, 8. Thermocouple.
- Figure 1 is a cross-sectional view of the sleeve heater.
- the outer sleeve 6 and the inner sleeve 7 form an annular column-shaped closed space.
- the heating wire 4 is wound in this space, and the magnesium oxide filling powder 5 is surrounded by the heating wire 4.
- the lead wire 3 is connected to the heating wire 4, and then taken out through the wire sheath 2 and the metal mesh 1 to be taken out.
- thermocouple 8 is installed between the outer sleeve 6 and the inner sleeve 7, and the lead wire 3 is connected to the heating wire 4, and then the thermocouple 8 is taken out to the outlet sheath 2 and the metal mesh 1 to obtain the temperature.
- the measurement signal is used to control the nozzle temperature.
- the sleeve heater of the present invention realizes a clearance fit with the nozzle body by hand sliding sliding, and constitutes a hot nozzle structure, and the heat transfer efficiency is greater than 50%, achieving a good heat transfer effect. .
Abstract
A double pipe heater for a hot-runner nozzle of an injection moulding system or an injection nozzle, which consists of heating wires, filling powder, an outer pipe and an inner pipe. The clearance fit between the heater and the noyyle body can be achieved by sliping with hand. It has advantages of an even heating temperature, a high heat transfer efficiency, a long working life, a high mechanical strength, easiness to assemble or use, a corrosion resistance, a good appearance and a safe reliability etc..
Description
一种热流道喷嘴和注塑机喷嘴用的套筒加热器 技术领域 Hot runner nozzle and sleeve heater for injection molding machine nozzle
本发明涉及注塑系统， 具体地说， 本发明涉及一种用于这类系统的热流道喷嘴 和注塑机喷嘴的套筒加热器。 Field of the Invention This invention relates to injection molding systems and, more particularly, to a sleeve heater for hot runner nozzles and injection molding machine nozzles of such systems.
背景技术 Background technique
在热流道注塑系统及注塑机系统中处理热塑聚合树脂时， 通常采用加热元 件对喷嘴外表面进行加热， 通过喷嘴壁传递热量以保持树脂在工作范围内的熔 融状态， 防止其过冷或过热。 目前普遍采用铠装加热器为喷嘴体加热。 但是， 这种加热器结构有局限性， 其加热元件仅部分和套筒或喷嘴体接触， 而大部分 处于周围空气环境中， 传热效率低于 25%, 而且加热器空烧将严重影响加热元 件的寿命。 _ When processing thermoplastic polymer resin in hot runner injection molding system and injection molding machine system, heating element is usually used to heat the outer surface of the nozzle, and heat is transferred through the nozzle wall to keep the resin molten in the working range, preventing it from being too cold or overheated. . At present, an armored heater is generally used to heat the nozzle body. However, this heater structure has limitations. The heating element is only partially in contact with the sleeve or the nozzle body, and most of it is in the surrounding air environment, the heat transfer efficiency is less than 25%, and the heater burns will seriously affect the heating. The life of the component. _
Juliano等的美国专利 US5973296所述的发明是厚膜加热器， 该厚膜加热 器置于注塑喷嘴基体表面， 包括介电膜层和电阻厚膜层， 采用精密的膜印刷法 将该电阻厚膜层直接固定于注塑喷嘴基体的外圆柱形表面上。 这种方法借鉴了 生产一类厚胰电阻的技术。 尽管保证了良好的传热效果， 但是精密的膜印刷需 要使用昂贵的膜印刷机， 且生产工艺复杂、 成本很高， 实施困难。 The invention described in U.S. Patent No. 5,973,296 to Juliano et al. is a thick film heater which is placed on the surface of an injection nozzle substrate, including a dielectric film layer and a thick film of resistance, which is formed by a precision film printing method. The layer is directly attached to the outer cylindrical surface of the injection nozzle base. This method draws on the technology of producing a class of thick pancreatic resistors. Although a good heat transfer effect is ensured, precision film printing requires the use of an expensive film printing machine, and the production process is complicated, costly, and difficult to implement.
因此，需要较好的方法有效地加热流道喷嘴及注塑机喷嘴，提高传热效率， 保证喷嘴的可靠性， 并且这种设计应该是经济合理、 容易维护和修理。 Therefore, a better method is needed to efficiently heat the nozzle of the flow path and the nozzle of the injection molding machine, improve the heat transfer efficiency, ensure the reliability of the nozzle, and the design should be economical, easy to maintain and repair.
发明内容 Summary of the invention
本发明的主要目的是提供一种加热装置， 用来处理熔融的材料。 该装置容 易安装在热流道喷嘴或者注塑机喷嘴的外部， 传热效率高并且容易进行大批量 生产、 运行可靠、 以减少制造和维护费。 The main object of the present invention is to provide a heating device for processing molten material. The unit is easily installed outside the hot runner nozzle or the nozzle of the injection molding machine, and has high heat transfer efficiency and is easy to mass-produce and operate reliably to reduce manufacturing and maintenance costs.
为解决上述技术问题， 本发明的套筒加热器， 主要包括电热丝， 金属外套 筒， 金属内套筒等， 其特征在于外套筒和内套筒等组成一个环形柱状的封闭空 间， 电热丝缠绕在这个空间内， 氧化镁填充粉末包围在电热丝周围， 引出线与 电热丝连接后穿出护套引出。 In order to solve the above technical problems, the sleeve heater of the present invention mainly comprises an electric heating wire, a metal outer sleeve, a metal inner sleeve, etc., characterized in that the outer sleeve and the inner sleeve form an annular column-shaped closed space, and the electric heating The filament is wound in this space, and the magnesia-filled powder is surrounded by the heating wire, and the lead wire is connected to the heating wire and then taken out through the sheath.
本发明的套筒加热器， 也可以将热电偶安装在外套筒和内套筒之间， 引出
线与电热丝连接后与热电偶一起穿出护套引出， 获取温度测量信号， 用于控制 喷嘴温度。 The sleeve heater of the present invention can also be installed between the outer sleeve and the inner sleeve by the thermocouple. After the wire is connected with the heating wire, it is taken out with the thermocouple through the sheath to obtain a temperature measurement signal for controlling the nozzle temperature.
通过缩管等工艺使电热丝和氧化镁填充粉末紧密的压缩在套管内， 其密实 的氧化镁填充粉末不仅能增加加热器的传热效率， 而且隔绝了电热丝与空气的 接触， 使电热丝在高温下不被氧化， 延长了加热器的使用寿命。 加热器各部件 之间无相对位移， 在震动条件下也能保持原有性能， 抗外来机械破坏力强。 The heating wire and the magnesium oxide filling powder are tightly compressed in the sleeve by a process such as shrinking, and the dense magnesium oxide filling powder not only increases the heat transfer efficiency of the heater, but also isolates the contact between the heating wire and the air, so that the heating wire It is not oxidized at high temperatures, extending the life of the heater. There is no relative displacement between the various components of the heater, and the original performance can be maintained under the vibration condition, and the external mechanical damage resistance is strong.
本发明的套筒加热器与喷嘴体通过手推滑进实现间隙配合， 构成完整的喷 嘴结构； 其传热面积大， 传热效率大于 50%， 加热温度均勾， 在使用中发生损 坏时， 拆装也方便。 The sleeve heater and the nozzle body of the invention realize the gap matching by hand sliding, forming a complete nozzle structure; the heat transfer area is large, the heat transfer efficiency is greater than 50%, and the heating temperature is hooked, when damage occurs during use, It is also convenient to disassemble.
附图说明 DRAWINGS
下面结合附图和实施例对本发明进一步说明。 The invention will now be further described with reference to the drawings and embodiments.
图 1是套筒加热器剖面图。 Figure 1 is a cross-sectional view of a sleeve heater.
图 2是带热电偶的套筒加热器。 Figure 2 is a sleeve heater with a thermocouple.
图 3是装配套筒加热器的热流道喷嘴。 Figure 3 is a hot runner nozzle equipped with a sleeve heater.
图中 1.金属护网， 2.护套， 3.引出棒， 4.电热丝， 5.氧化镁填充粉末， 6.金 属外套筒， 7. 金属内套筒， 8.热电偶。 In the figure 1. Metal mesh, 2. Sheath, 3. Lead rod, 4. Electric wire, 5. Magnesium oxide filled powder, 6. Metal outer sleeve, 7. Metal inner sleeve, 8. Thermocouple.
具体实施方式 detailed description
图 1所示的是套筒加热器剖面图， 外套筒 6和内套筒 7等组成一个环形柱 状的封闭空间， 电热丝 4缠绕在这个空间内， 氧化镁填充粉末 5包围在电热丝 4周围， 引出线 3与电热丝 4连接后穿出出线护套 2和金属护网 1引出。 Figure 1 is a cross-sectional view of the sleeve heater. The outer sleeve 6 and the inner sleeve 7 form an annular column-shaped closed space. The heating wire 4 is wound in this space, and the magnesium oxide filling powder 5 is surrounded by the heating wire 4. Around, the lead wire 3 is connected to the heating wire 4, and then taken out through the wire sheath 2 and the metal mesh 1 to be taken out.
图 2是将热电偶 8安装在外套筒 6和内套筒 7之间， 引出线 3与电热丝 4 连接后与热电偶 8—起穿出出线护套 2和金属护网 1引出，获取温度测量信号， 用于控制喷嘴温度。 2, the thermocouple 8 is installed between the outer sleeve 6 and the inner sleeve 7, and the lead wire 3 is connected to the heating wire 4, and then the thermocouple 8 is taken out to the outlet sheath 2 and the metal mesh 1 to obtain the temperature. The measurement signal is used to control the nozzle temperature.
图 3是装配套筒加热器的热流道喷嘴， 本发明的套筒加热器通过手推滑动 与喷嘴体实现间隙配合， 构成热喷嘴结构， 传热效率大于 50%， 实现了良好的 传热效果。
3 is a hot runner nozzle for assembling a sleeve heater. The sleeve heater of the present invention realizes a clearance fit with the nozzle body by hand sliding sliding, and constitutes a hot nozzle structure, and the heat transfer efficiency is greater than 50%, achieving a good heat transfer effect. .
Claims
1. 一种用于热流道喷嘴以及注塑机喷嘴的套筒加热器， 主要包括电热丝， 金属外套筒， 金属内套筒等， 其特征在于外套筒 (6)和内套筒 (7)等组成一个环形 柱状的封闭空间， 电热丝 (4)缠绕在这个空间内， 氧化镁填充粉末 (5)包围在电热 丝 (4)周围， 引出线 (3)与电热丝 (4)连接后穿出护套 (2)引出。 1. A sleeve heater for a hot runner nozzle and an injection molding machine nozzle, mainly comprising a heating wire, a metal outer sleeve, a metal inner sleeve, etc., characterized by an outer sleeve (6) and an inner sleeve (7) The electric heating wire (4) is wound around the space, the magnesium oxide filling powder (5) is surrounded by the heating wire (4), and the lead wire (3) is connected with the heating wire (4). Take out the sheath (2) and lead it out.
2. 如权利要求 1所述的套筒加热器， 其特征在于可以将热电偶 (8)安装在 外套筒 (6)和内套筒 (7)之间， 引出线 (3)与电热丝 (4)连接后与热电偶 (8)—起穿出 护套 (2)引出。 2. A sleeve heater according to claim 1, characterized in that a thermocouple (8) can be mounted between the outer sleeve (6) and the inner sleeve (7), the lead wire (3) and the heating wire ( 4) Connected with the thermocouple (8) and pulled out of the sheath (2).
3. 如权利要求 1至 2中任一项所述的套筒加热器， 其特征在于， 所述电 热丝 (4)缠绕在外套筒 (6)和内套筒 (7)之间。 The sleeve heater according to any one of claims 1 to 2, characterized in that the heating wire (4) is wound between the outer sleeve (6) and the inner sleeve (7).
4. 如权利要求 1至 2中任一项所述的套筒加热器，其特征在于， 电热丝 (4) 和氧化镁填充粉末 (5)被紧密的压缩在套管内， 无相对位移。
The sleeve heater according to any one of claims 1 to 2, characterized in that the heating wire (4) and the magnesium oxide filling powder (5) are tightly compressed in the sleeve without relative displacement.
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M00/S00ZN3/X3d £6ΐ and 900Z OAV
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200420090275.0 | 2004-09-21 | ||
| CN200420090275 | 2004-09-21 | ||
| CN 200510005404 CN1751867A (en) | 2004-09-21 | 2005-01-02 | Jacket heating device used for hot runner nozzle or injection moulder nozzle |
| CN200510005404.0 | 2005-01-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006032193A1 true WO2006032193A1 (en) | 2006-03-30 |
Family
ID=36089843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2005/001490 WO2006032193A1 (en) | 2004-09-21 | 2005-09-19 | A double pipe heater for hot-runner nozzle and injection nozzle |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1751867A (en) |
| WO (1) | WO2006032193A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106393583A (en) * | 2016-06-15 | 2017-02-15 | 苏州市振业模具有限公司 | Device applicable to automobile water groove die injection |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2885955A1 (en) * | 2012-08-16 | 2015-06-24 | Top Electric Appliances Industrial Ltd. | A device for heating and/or vaporizing a fluid such as water |
| CN104620672A (en) * | 2012-08-16 | 2015-05-13 | 广州市拓璞电器发展有限公司 | A device for heating and/or vaporizing a fluid such as water |
| CN102821496B (en) * | 2012-08-16 | 2014-11-05 | 广州市益德电热制品有限公司 | Instant-heating heater |
| CN106626264B (en) * | 2016-11-30 | 2019-04-16 | 绍兴市昊特热能科技有限公司 | The production method of the hot flow path heater of independent thermometric |
| CN108381875A (en) * | 2018-03-05 | 2018-08-10 | 高立凡 | A kind of Hot runner heater |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3217279A (en) * | 1962-02-19 | 1965-11-09 | Wiegand Co Edwin L | Electric resistance heater |
| US4120086A (en) * | 1974-10-21 | 1978-10-17 | Fast Heat Element Manufacturing Co. | Method of making electrically heated nozzle |
| US4492556A (en) * | 1978-10-16 | 1985-01-08 | Fast Heat Element Mfg. Co., Inc. | Unitary heated nozzle assembly |
| US4902219A (en) * | 1986-01-08 | 1990-02-20 | Fast Heat Element Manufacturing Company, Inc. | Plastic injection molding system with multiple tip torpedo heater |
| CN1134652A (en) * | 1995-01-31 | 1996-10-30 | 京特热渠道有限公司 | Hot runner nozzle |
-
2005
- 2005-01-02 CN CN 200510005404 patent/CN1751867A/en active Pending
- 2005-09-19 WO PCT/CN2005/001490 patent/WO2006032193A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3217279A (en) * | 1962-02-19 | 1965-11-09 | Wiegand Co Edwin L | Electric resistance heater |
| US4120086A (en) * | 1974-10-21 | 1978-10-17 | Fast Heat Element Manufacturing Co. | Method of making electrically heated nozzle |
| US4492556A (en) * | 1978-10-16 | 1985-01-08 | Fast Heat Element Mfg. Co., Inc. | Unitary heated nozzle assembly |
| US4902219A (en) * | 1986-01-08 | 1990-02-20 | Fast Heat Element Manufacturing Company, Inc. | Plastic injection molding system with multiple tip torpedo heater |
| CN1134652A (en) * | 1995-01-31 | 1996-10-30 | 京特热渠道有限公司 | Hot runner nozzle |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106393583A (en) * | 2016-06-15 | 2017-02-15 | 苏州市振业模具有限公司 | Device applicable to automobile water groove die injection |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1751867A (en) | 2006-03-29 |
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