CN1147999A - 具有压入的加热元件和一体的环部的模注注嘴 - Google Patents
具有压入的加热元件和一体的环部的模注注嘴 Download PDFInfo
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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
- 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
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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
- 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
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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
- 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
- B29C2045/2743—Electrical heating element constructions
- B29C2045/2748—Insulating layers covering the electrical heating element
-
- 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
- B29C2045/2772—Means for fixing the nozzle to the manifold
Abstract
一种模注注嘴具有围着内芯部后端延伸的外环部，还具有带有螺旋部的电加热元件，该螺旋部在内芯部的外表面中的螺旋形槽内延伸，借助于加热元件的螺旋部被压配合并再变形于槽内，以及用热固性陶瓷密封剂将外环部和内芯部固定在一起，从而可使之在没有过热地加热元件的情况下提供整体的一件式的结构件。
Description
本发明一般地涉及模注注嘴，特别涉及具有细长的内芯部、外环部和电加热元件被一体地固定在一起而没有遭受高的钎焊温度的模注注嘴。
一体的加热模注注嘴是已知的，该注嘴具有外环部，该外环部将注嘴支承在围绕的冷模子中。设置电加热元件，而将其螺旋部一体地固定在细长的内芯部中也是已知的。在一个实例中，如在本申请人的美国专利(专利号4557685，颁布日期1985年10月10)中可看到。电加热元件首先以合适的镍合金钎焊到螺旋形槽中，然后，外环部以合适的铜合金钎焊定位。在另一实例中，全都用镍合金以单一步骤钎焊，正如本申请人的专利号为4768283(颁布日期为1988年9月6)中可见到的。所有这些现有注嘴是被钎焊的，其缺点是将它们加热到大约1100°F的钎焊温度，可能损坏加热元件，这是由于其中的阻抗丝变脆。因此，在运送和组装过程中，更容易出现损坏，注嘴可能缩短使用寿命。
雷尔(Reinl)的专利(EP0425981)示出了压力装配电加热元件于在熔体分配歧管的平表面中的槽内，但是没有解决具有一体的外环部注嘴中的加热元件的损坏问题。
因此，本发明的目的是至少部分地克服现有技术的缺点，这是借助于提出一种模注注嘴，该注嘴具有结合的加热元件和外环部，该加热元件的螺旋部是被压装配并再成形到槽中定位的，该外环部用热固性陶瓷密封剂而被固定定位。
为此，就其一个方面而言，本发明提出一种模注注嘴，该注嘴具有带有后端，前端和熔体孔以及外表面和头部的细长的内芯部，该熔体孔从后端穿过其上而延伸；该头部在后端处通过外表面向外延伸；外环部邻近后端而环绕内芯部，外环部具有抵靠内芯部的头部的肩；以及具有引出部和带有外表面的螺旋部的电加热元件，该引出部向外延伸穿过外环部，该螺旋部绕在内芯部的外表面中的螺旋形槽内，槽具有带有半圆基底的内表面，其改进之处包括以下的结合，即加热元件的螺旋部借助于压配合进入槽内而使其充分地变形以保证在槽的内表面和加热元件的螺旋部的外表面之间实质上连续的接触，并且，借助于热固性陶瓷密封剂施加到内芯部和围绕的外环部之间而使外环部围着内芯部被固定定位。
本发明的其它目的和优点将从以下结合附图的描述中显示出来。
图1是根据本发明推荐实施例的模注注嘴的平面视图；
图2是沿图1中2-2线的剖示图；
图3是放大的剖示图，示出了压配合装入在槽内的加热元件；
图4是立体分解图，示出了卷绕到位的加热元件以及为了组装的外环部和接线塞的状况；
图5是立体视图，示出了热固化陶瓷密封剂的应用。
首先参考图1和3，该等图示出根据本发明推荐实施例的整体加热模注注嘴10，它是被装在注模(没示出)中的。注嘴10具有细长内芯部12，该内芯部具有后端14和前端16。熔体孔18延伸穿过内芯部12以便输送压力熔体从后端14到达前端16。在此实施例中，具有空心内件22以及螺纹外件24的注嘴密封件20是被螺固在注嘴10前端16中的螺纹座26中，以便将熔体输送到注模(没示出)中的注入浇口。然而，在另一实施例中，注嘴10的前端16可以具有不同的其它构型以提供不同类型的浇注。
注嘴10还具有外环部28，该外环部围绕着内芯部12并邻近内芯部12的后端14。当外环部2 8以通常的H13热工具钢制成时，内芯部12可以以不同的材料制成，诸如铝、不锈钢或者铜铍合金、镍铍合金，它们具有不同的热传导性以便提供合适的热平衡以使之用于不同材料或不同浇注口型式，诸如热浇注口。注嘴10的内芯部12在其后端14处具有向外延伸的头部30。头部30紧密地装配在外环部28中的座32内，并且抵靠向内延伸的肩部34。在此实施例中，外环部28具有螺纹孔36以便容纳螺钉38使之将其固定到熔体分配歧管40上。外环部28具有筒形裙部42，该裙部围着内芯部12向前延伸而到达注嘴10在模子(没示出)中的定位处。如能见到的那样，在内芯部12的圆柱形外表面46和外环部28的围绕的裙部42之间设有间隔44。
注嘴10的内芯部12具有电加热元件48。电加热元件48具有螺旋部50和引出部52。螺旋部50在内芯部12的圆柱形外表面46中的螺旋形槽54中延伸，螺旋形槽54的节距朝向后端14和前端16是较密集的，该处由于较大的热损失而要求更多的热量。如图3可见到，螺旋形槽54的内表面6具有半圆形的基底58。电加热元件48具有包封在外钢壳64中的电绝缘的耐热粉末材料62中的阻抗丝60，该粉末材料诸如是氧化镁粉末。原始的加热元件48具有的圆断面的直径稍为小于螺旋形槽54的宽度。如图3所示，加热元件48的螺旋部50是被压配合进入槽54中的，这就使变形而形成平的外侧66，并迫使其外表面68向外而进入连续地与螺旋形槽54的内表面56接触。这种接触将加热元件48的螺旋部50固定定位在螺旋形槽54中并保证热从加热元件48到邻接的注嘴10的内部12的良好传输。加热元件48的引出部52径向地向外延伸穿过外环部28中的U形开口70，如图4所示，在此实施例中，引出部52具有两个隔开的引出端72，该引出端72是相互平行的，但是，在另一实施例中可以是只有单一引出端的。两个引出端72向外延伸进入陶瓷的终端连接件76中的平行孔74。终端连接件76具有长圆形内端78，该内端装配到外环部28中的U形开口70中。终端连接件还具有两个制动螺钉80，该制动螺钉80螺入两个螺纹孔82中以便固定引出端72，以使之将其与传统电源(没示出)来的引线84搭接。
借助于热固性陶瓷密封剂86，围着内芯部12，外环部28被整体地固定定位，热固性陶瓷密封剂是被施加到外环部28的裙部42和内芯部12的外表面46之间的间隔中的。陶瓷密封剂还固定终端连接件74到位并密封外环部28中的U形开口70的支托而防止可能的熔体泄漏。此外，密封防止熔体漏到内芯部12和外环部28之间，在间隔44中的陶瓷密封剂的圈带还提供绝缘以增强内芯部12和围着的裙部42之间的热隔离。
请参考图4和图5，该等图描述了根据本发明推荐实施例的模注嘴10的制作方法，细长的内芯部12在其外表面46上以注嘴10热要求而决定的图形相加工制成螺旋形槽54，然后，电加热元件48的螺旋部50绕在螺旋形槽54中，而引出部52在靠近后端14处径向地向外延伸。用滚辗工具将电加热元件48的螺旋部50压配合进入螺旋形槽54中，这样而将其变形并提供在加热元件48的外表面68和螺旋形槽54的内表面56之间连续的接触。空心外环部28滑过内芯部12的前端16而到位，而使内芯部12的头部被容纳在外环部28中的座32内，并且加热元件48的引出部52向外延伸穿过外环部28中的U形开口70。头部30在座32中的装配是十分紧密的，以使之在外环部28中精确地定位内芯部12。
然后，陶瓷终端连接件76安装定位，而其长圆的内端78座落在外环部28中匹配的U形开口70中，并且两个引出端72延伸进入平行的孔74。然后，弹性圈88围着外环部28的后端90定位，以使之覆盖U形开口70的剩余部分。在图5中以竖直位置观之，预定数量的合适的液态热固性陶瓷密封剂86从气动配送管92被施加或注射而进入裙部42和内芯部12的圆柱形外表面46之间的间隔44中，该热固性陶瓷密封剂诸如CERAMABOND668(商标名称为Aremeo)。液态热固性陶瓷密封剂86围着连接器76的内端78流下，并且弹性圈88防止其穿过外环部28中的开口70漏出。如图2所示，液态热固性陶瓷密封剂86还流进到小缝隙94中，该小缝隙设置成围着内芯部12，然后，充填部分筒形间隔44。随后，组装的注嘴10在炉内被加热到大约200℃，这就固化了热固性陶瓷密封剂86。这就一体地固定内芯部12，外环部28和陶瓷连接器76于一起，而没有过热地加热元件。热固性陶瓷密封剂86还形成一种密封，以防止内芯部12和外环部28之间熔体的泄漏。最后，在被装到合适的模子中之前，弹性圈88被除去。
使用中，电能被施加到熔体分配歧管40中的加热元件96上以及注嘴10中的加热元件48上以使之将它们加热到预定的运行温度。根据预定的模注循环，压力熔体从模注机(没示出)被施加到熔体分配歧管40的熔体通道98中，熔体流过注嘴10中的熔体孔18并穿过两件的注嘴密封件20而到达模子中的浇口(没示出)。在模腔被充满之后，并在适合的致密和冷却期期满之后，模注压力被释放，熔体输送系统被减压以避免穿过开启浇口的拉丝。然后打开模子，逐出模制产品，在取出之后，模子关闭并连续地重复循环，而循环时间是根据模腔尺寸和被模注材料的型号的。
相应于推荐实施例的模注注嘴10的描述已给出。如本领域技术人员所知晓，在不背离本发明的范畴内的各种改进是可能的，并是被下述权利要求所界定的。
Claims (5)
1、整体的加热模注注嘴，该注嘴具有带后端，前端，从后端延伸穿过其上的熔体孔，圆柱形外表面以及头部的细长的内芯部，该头部位于后端而经过外表面向外延伸；临近后端围绕着内芯部的外环部，该外环部具有肩部，内芯部的头部抵靠该肩部；以及带有引出部的电加热元件，该引出部穿过外环部向外延伸，而带有外表面的螺旋部绕在内芯部的外表面中的螺旋形槽内，该槽具有带有半圆形底的内表面，其特征是，该注嘴具有以下特征的组合：
(a)借助于将其压配合到槽内，加热元件的螺旋部是充分地被变形以使之保证在槽的内表面和加热元件的螺旋部的外表面之间实质上连续的接触；以及
(b)借助于施加热固性陶瓷密封剂到内芯部和围绕的外环部之间，外环部被围着内芯部固定定位。
2、如权利要求1所述模注注嘴，其特征是，加热元件的螺旋部在被压配合装入槽中被变形之前其断面为圆形。
3、如权利要求2所述模注注嘴，其特征是，由加热元件的引出部穿过终端连接件而向外延伸，终端连接件具有容纳在外环部中的开口内的内端，热固性陶瓷密封件使终端连接件固定定位并密封外环部中的开口以防止熔体在此穿过泄漏。
4、如权利要求3所述模注注嘴，其特征是，外环部具有圆筒形裙，该裙向前延伸而在裙和内芯部的外表面之间有间隔，热固性陶瓷密封剂至少部分地充填到裙和外表面之间的间隔中以防止在内芯部和围着的外环部之间的熔体的泄漏。
5、如权利要求4所述模注注嘴，其特征是，制成内芯部和外环部的材料具有不同的导热性。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002152664A CA2152664C (en) | 1995-06-26 | 1995-06-26 | Injection molding nozzle with pressed in heating element and integral collar portion |
| CA2152664 | 1995-06-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1147999A true CN1147999A (zh) | 1997-04-23 |
| CN1058653C CN1058653C (zh) | 2000-11-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96106889A Expired - Fee Related CN1058653C (zh) | 1995-06-26 | 1996-06-20 | 具有压入的加热元件和一体的环部的模注注嘴 |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US5614233A (zh) |
| EP (1) | EP0750974B1 (zh) |
| JP (1) | JPH0911279A (zh) |
| CN (1) | CN1058653C (zh) |
| AR (1) | AR002587A1 (zh) |
| AT (1) | ATE184234T1 (zh) |
| BR (1) | BR9602782A (zh) |
| CA (1) | CA2152664C (zh) |
| DE (1) | DE69604131T2 (zh) |
| DK (1) | DK0750974T3 (zh) |
| ES (1) | ES2136345T3 (zh) |
| MY (1) | MY112323A (zh) |
| SG (1) | SG80551A1 (zh) |
Families Citing this family (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2181964C (en) * | 1996-07-24 | 2007-02-20 | Chun Keung Mak | Injection molding nozzle method using a terminal locating and sealing key |
| US6305923B1 (en) * | 1998-06-12 | 2001-10-23 | Husky Injection Molding Systems Ltd. | Molding system using film heaters and/or sensors |
| CA2250599A1 (en) * | 1998-10-16 | 2000-04-16 | Jobst Ulrich Gellert | Apparatus and method of making an injection molding nozzle with tip insert |
| US6655945B1 (en) | 1999-03-18 | 2003-12-02 | Mold Masters Limited | Apparatus and method for multi-layer injection molding |
| US6440350B1 (en) | 1999-03-18 | 2002-08-27 | Mold-Masters Limited | Apparatus and method for multi-layer injection molding |
| US6398537B2 (en) | 1999-04-02 | 2002-06-04 | Mold-Masters Limited | Shuttle system for an apparatus for injection molding |
| DE19920331B4 (de) * | 1999-05-03 | 2006-04-20 | Yudo Co., Ltd. | Einspritzdüse für Spritzgießmaschinen |
| US6196826B1 (en) | 1999-05-28 | 2001-03-06 | Mold-Masters Limited | Seepage system for an injection molding apparatus |
| US6394784B1 (en) * | 2000-03-08 | 2002-05-28 | Mold-Masters Limited | Compact cartridge hot runner nozzle |
| DE10025588A1 (de) | 2000-05-24 | 2001-11-29 | Mold Masters Ltd | Einrichtung zur Verarbeitung von geschmolzenem Material, Verfahren und Vorrichtung zur Herstellung derselben |
| US6817088B1 (en) | 2000-06-16 | 2004-11-16 | Watlow Electric Msg.C | Termination method for thick film resistance heater |
| US6394785B1 (en) * | 2000-11-20 | 2002-05-28 | Top Grade Molds Ltd. | Nozzle for injection mold |
| CN1646292B (zh) | 2002-02-05 | 2012-01-25 | 马斯特模具（2007）有限公司 | 具有加热头部的注射喷嘴 |
| US6890473B2 (en) * | 2002-09-03 | 2005-05-10 | Mold-Masters Limited | Alignment collar for a nozzle |
| US20050181090A1 (en) * | 2002-12-06 | 2005-08-18 | Mold-Masters Limited | Injection molding nozzle with embedded and removable heaters |
| ITTO20030042A1 (it) * | 2003-01-27 | 2004-07-28 | Piero Enrietti | Dispositivo riscaldatore-diffusore termico per un ugello di |
| DE102004009184B4 (de) * | 2003-02-25 | 2017-02-16 | Mold-Masters (2007) Limited | Verfahren und Vorrichtung zum Entfernen von Schmelze aus einer Schmelzerückstände-Stauzone angrenzend einer Ventilnadel in einer Spritzgießvorrichtung |
| US20040258795A1 (en) * | 2003-06-23 | 2004-12-23 | Hans Guenther | Injection molding nozzle with separate nozzle flange |
| US7381050B2 (en) | 2004-10-20 | 2008-06-03 | Mold-Masters (2007) Limited | Snap on flange for injection molding nozzle |
| KR100671817B1 (ko) * | 2004-10-25 | 2007-01-19 | 김관표 | 사출성형기용 노즐 및 제작방법 |
| KR100671815B1 (ko) * | 2004-10-25 | 2007-01-19 | 김관표 | 사출성형기용 단노즐 제작방법 |
| DE202005002043U1 (de) * | 2005-02-08 | 2005-04-21 | Günther Heißkanaltechnik GmbH | Spritzgießvorrichtung |
| US7314367B2 (en) * | 2005-02-25 | 2008-01-01 | Mold-Masters (2007) Limited | Hot runner nozzle collar for an injection molding apparatus |
| US7890896B2 (en) * | 2005-11-18 | 2011-02-15 | Synopsys, Inc. | Method and apparatus for distinguishing combinational designs |
| KR100844069B1 (ko) * | 2006-06-02 | 2008-07-07 | 주식회사 몰드이노 | 고주파 유도 용융 수지 사출장치 |
| JP4784948B2 (ja) * | 2006-03-03 | 2011-10-05 | モルド−イノ カンパニー リミテッド | プラスチック射出ノズル用非接触高周波誘導加熱装置 |
| DE202007014964U1 (de) * | 2007-10-25 | 2009-02-26 | Günther Heisskanaltechnik Gmbh | Anschlusseinrichtung |
| TWI620643B (zh) * | 2014-05-28 | 2018-04-11 | 開放式熱澆道澆口構造 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3046471A1 (de) * | 1980-12-10 | 1982-07-22 | Bernhard 7410 Reutlingen Dangelmaier | Duesenkern zum einbau in einen duesenkoerper von heisskanalspritzduesen fuer eine kunststoffspritzgiessvorrichtung |
| CA1230458A (en) * | 1984-07-13 | 1987-12-22 | Gellert, Jobst Ulrich | Injection molding heated nozzle with brazed in heating element and method of manufacture |
| CA1267514A (en) * | 1987-07-15 | 1990-04-10 | Jobst Ulrich Gellert | Coated injection molding nozzle and method |
| DE3935856C1 (zh) * | 1989-10-27 | 1991-04-25 | Sfr-Formenbau Dangelmaier Gmbh, 7410 Reutlingen, De | |
| US5052100A (en) * | 1990-04-10 | 1991-10-01 | Panos Trakas | Method of making sprue bushing assembly with inner thermal sleeve |
| JP2991789B2 (ja) * | 1991-02-19 | 1999-12-20 | モールド・マスターズ株式会社 | プラスチック成形用加熱ノズル |
| US5225662A (en) * | 1992-01-13 | 1993-07-06 | Husky Injection Molding Systems, Ltd. | Flexible heating element for a hot runner housing including method of manufacture and method of installation |
| CA2137702C (en) * | 1994-12-07 | 2004-11-02 | Jobst Ulrich Gellert | Injection molding nozzle with separable core and one-piece collar |
-
1995
- 1995-06-26 CA CA002152664A patent/CA2152664C/en not_active Expired - Fee Related
- 1995-07-17 US US08/502,922 patent/US5614233A/en not_active Expired - Lifetime
-
1996
- 1996-05-28 ES ES96108488T patent/ES2136345T3/es not_active Expired - Lifetime
- 1996-05-28 AT AT96108488T patent/ATE184234T1/de not_active IP Right Cessation
- 1996-05-28 DK DK96108488T patent/DK0750974T3/da active
- 1996-05-28 EP EP96108488A patent/EP0750974B1/en not_active Expired - Lifetime
- 1996-05-28 DE DE69604131T patent/DE69604131T2/de not_active Expired - Fee Related
- 1996-05-29 SG SG9609920A patent/SG80551A1/en unknown
- 1996-06-13 BR BR9602782A patent/BR9602782A/pt not_active IP Right Cessation
- 1996-06-14 JP JP8154228A patent/JPH0911279A/ja active Pending
- 1996-06-20 CN CN96106889A patent/CN1058653C/zh not_active Expired - Fee Related
- 1996-06-24 MY MYPI96002549A patent/MY112323A/en unknown
- 1996-06-25 AR ARP960103302A patent/AR002587A1/es unknown
Also Published As
| Publication number | Publication date |
|---|---|
| SG80551A1 (en) | 2001-05-22 |
| EP0750974A1 (en) | 1997-01-02 |
| MY112323A (en) | 2001-05-31 |
| ATE184234T1 (de) | 1999-09-15 |
| CA2152664A1 (en) | 1996-12-27 |
| DE69604131D1 (de) | 1999-10-14 |
| US5614233A (en) | 1997-03-25 |
| JPH0911279A (ja) | 1997-01-14 |
| ES2136345T3 (es) | 1999-11-16 |
| DE69604131T2 (de) | 2000-01-20 |
| EP0750974B1 (en) | 1999-09-08 |
| BR9602782A (pt) | 1998-04-22 |
| AR002587A1 (es) | 1998-03-25 |
| CA2152664C (en) | 2008-10-14 |
| CN1058653C (zh) | 2000-11-22 |
| DK0750974T3 (da) | 2000-04-03 |
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