APPARATUS AND METHOD FOR HEATING A SIDE GATE NOZZLE

    公开(公告)号:US20190224896A1

    公开(公告)日:2019-07-25

    申请号:US16340398

    申请日:2017-10-09

    IPC分类号: B29C45/27 B29C45/78

    摘要: An injection molding machine includes an edge gate nozzle with a nozzle body having a primary melt channel and a nozzle head having first and second secondary melt channels that feed melt to first and second nozzle tips. First and second heaters are disposed in the nozzle head to provide heat to the secondary melt channels. In some embodiments, the heaters are positioned adjacent to the secondary melt channels, with first heater is closer to the first secondary melt channel than to the second secondary melt channel. In some embodiments, the heaters are positioned adjacent to the nozzle tips, with the first heater closer to the first nozzle tip than to the second nozzle tip. In some embodiments, each heater is adjacent to both the respective nozzle tip and secondary melt channel. In some embodiments, each heater is individually controllable.

    Injection-Molding Apparatuses Containing Integrally Formed Thermocouples
    3.
    发明申请
    Injection-Molding Apparatuses Containing Integrally Formed Thermocouples 审中-公开
    包含整体形成的热电偶的注射成型装置

    公开(公告)号:US20160193770A1

    公开(公告)日:2016-07-07

    申请号:US14909749

    申请日:2014-09-12

    IPC分类号: B29C45/78 B29C45/27 B29C45/26

    摘要: Thermocouples and their associated thermocouple junctions can be integrated via freeform fabrication into various parts of injection-molding apparatuses, including the nozzles. Unitary monolithic integration of thermocouples allows thermocouple junctions to be located highly proximate to the locations where temperature monitoring is desired, particularly, near the tips of injection-molding nozzles, which has conventionally been difficult or impossible to achieve. An injection-molding nozzle with one or more integrated thermocouples, a hot-runner manifold with injection-molding nozzles, having integrated thermocouples, monolithically integrated with the manifold as a single part using a freeform fabrication process, and a separately formed injection-molding nozzle having at least one integrated thermocouple and a robust electrical connection are presented according to various aspects of the invention.

    摘要翻译: 热电偶及其相关联的热电偶接头可以通过自由形式制造集成到注射成型设备的各个部分中,包括喷嘴。 热电偶的单一整体集成允许热电偶接头高度靠近需要温度监测的位置,特别是在注塑成型喷嘴的尖端附近,这通常是困难或不可能实现的。 具有一个或多个集成热电偶的注射成型喷嘴,具有注射成型喷嘴的热流道歧管,其具有集成的热电偶,使用自由形式制造工艺与歧管单一集成为单个部件,以及单独形成的注射成型喷嘴 具有根据本发明的各个方面的至少一个集成热电偶和坚固的电连接。

    Injection-Molding Systems having Hot-Runner Manifolds Containing Non-Melt Internal Channels for Providing Operability Enhancements
    4.
    发明申请
    Injection-Molding Systems having Hot-Runner Manifolds Containing Non-Melt Internal Channels for Providing Operability Enhancements 审中-公开
    具有包含非熔融内部通道的热流道歧管的注射成型系统用于提供可操作性增强

    公开(公告)号:US20160151948A1

    公开(公告)日:2016-06-02

    申请号:US14905981

    申请日:2014-08-01

    IPC分类号: B29C45/27

    摘要: Hot-runner manifolds that contain one or more types of non-melt channels in addition to melt channels, and injection-molding systems containing such hot-runner manifolds. The differing types of non-melt channels include: coolant channels for carrying a coolant for cooling the tips of hot-tip nozzles, for example, during hot latching operations; heating-fluid channels for carrying a heating fluid for heating melt within melt channels within the hot-runner manifolds; and actuation-fluid channels for carrying actuation fluid to valves of valve-actuated nozzles. In each case, nozzles can be formed unitarily monolithically with the hot-runner manifolds and one or more of the various types of non-melt channels can be continuously routed within such unitary monolithic nozzles. Freeform fabrication processes can be used to form hot-runner manifolds of the present disclosure, which often contain complex/intricate internal passageways that form the various types of melt and non-melt channels.

    摘要翻译: 除了熔体通道外还包含一种或多种类型的非熔体通道的热流道歧管,以及含有这种热流道歧管的注塑系统。 不同类型的非熔体通道包括:用于承载冷却剂的冷却剂通道,用于冷却热尖端喷嘴的尖端,例如在热锁定操作期间; 加热流体通道,用于承载用于在热流道歧管内的熔体通道内加热熔体的加热流体; 以及用于将致动流体携带到阀致动喷嘴的阀的致动流体通道。 在每种情况下,喷嘴可以与热流道歧管整体地形成,并且各种类型的非熔体通道中的一种或多种可以在这样的单一整体喷嘴内连续路由。 可以使用自由形成制造工艺来形成本公开的热流道歧管,其通常包含形成各种类型的熔体和非熔体通道的复杂/复杂的内部通道。

    HOT RUNNER NOZZLE WITH A GATE PRESSURE EQUALIZER

    公开(公告)号:US20180015653A1

    公开(公告)日:2018-01-18

    申请号:US15525098

    申请日:2015-11-16

    IPC分类号: B29C45/28 B29C45/27

    摘要: A method and apparatus for equalizing gate pressure of a hot runner nozzle are disclosed. The nozzle includes a nozzle housing defining a primary melt channel, a first nozzle tip having a first secondary melt channel in fluid communication with the primary melt channel, a second nozzle tip having a second secondary melt channel in fluid communication 5 with the primary melt channel, and a valve disposed in the primary melt channel for selectively opening and closing a downstream end of the primary melt channel to control a flow of melt to the first and second secondary melt channels. In some embodiments, the valve is configured to selectively open when a pressure of the melt reaches a threshold peak pressure. In some embodiments, the 10 valve includes a valve stem that cooperates with the primary melt channel to block a flow of melt therefrom until the threshold peak pressure is established.

    Unitary Monolithically Formed Injection-Molding Apparatuses
    6.
    发明申请
    Unitary Monolithically Formed Injection-Molding Apparatuses 审中-公开
    单一单片成型注塑设备

    公开(公告)号:US20160193768A1

    公开(公告)日:2016-07-07

    申请号:US14909750

    申请日:2014-09-10

    摘要: A unitary monolithically formed hot-runner apparatus having at least a manifold containment structure, a hot-runner manifold, at least one nozzle, and one or more spacers. In some embodiments, the manifold containment structure, hot-runner manifold, nozzle(s), and spacer(s) may be multi-material apparatuses of unitary monolithic construction. In other embodiments, a thermal expansion accommodation portion is provided for each nozzle to accommodate thermal growth. Each spacer may be formed of a material having a lower thermal conductivity than the materials of the hot-runner manifold and manifold containment structure and may be made to include a discontinuity to allow for thermal expansion.

    摘要翻译: 具有至少一个歧管容纳结构,热流道歧管,至少一个喷嘴和一个或多个间隔件的整体式整流式热流道装置。 在一些实施例中,歧管容纳结构,热流道歧管,喷嘴和间隔件可以是整体式整体结构的多材料装置。 在其它实施例中,为每个喷嘴提供热膨胀容纳部分以适应热量生长。 每个间隔件可以由具有比热流道歧管和歧管容纳结构的材料低的热导率的材料形成,并且可以被制成包括不连续性以允许热膨胀。