WO2011094918A1 - 一种注塑形成的密封式电缆线引出电容器及注塑形成方法 - Google Patents

一种注塑形成的密封式电缆线引出电容器及注塑形成方法 Download PDF

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Publication number
WO2011094918A1
WO2011094918A1 PCT/CN2010/001126 CN2010001126W WO2011094918A1 WO 2011094918 A1 WO2011094918 A1 WO 2011094918A1 CN 2010001126 W CN2010001126 W CN 2010001126W WO 2011094918 A1 WO2011094918 A1 WO 2011094918A1
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Prior art keywords
capacitor
lead
injection
cable
capacitor body
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PCT/CN2010/001126
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English (en)
French (fr)
Inventor
潘浩
张自魁
许峰
Original Assignee
上海皓月电气有限公司
上海皓月电容器有限公司
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Application filed by 上海皓月电气有限公司, 上海皓月电容器有限公司 filed Critical 上海皓月电气有限公司
Priority to BRPI1010143A priority Critical patent/BRPI1010143B8/pt
Priority to CN2010800065824A priority patent/CN102272871B/zh
Priority to DE212010000112U priority patent/DE212010000112U1/de
Publication of WO2011094918A1 publication Critical patent/WO2011094918A1/zh

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G4/00Fixed capacitors; Processes of their manufacture
    • H01G4/002Details
    • H01G4/228Terminals
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G4/00Fixed capacitors; Processes of their manufacture
    • H01G4/002Details
    • H01G4/224Housing; Encapsulation

Definitions

  • the present invention relates to a capacitor structure in the form of a cable take-up, and more particularly to a sealed cable-tie capacitor and an injection molding method formed by injection molding.
  • FIG. 1 it comprises a capacitor body 1 having a capacitor core inside, and an upper end surface of the capacitor body 1 has a solder joint 6 with a capacitor core connected to a lower end of the lead cable 4; an upper end surface of the capacitor body 1
  • the soldering joint 6 is on the leading end cover 2, and the peripheral ring 9 of the leading end cover 2 surrounds the welding defect 6 therein, and the outer ring 9 of the leading end cover 2 is sleeved with a lead positioning sleeve 3; the take-out positioning sleeve 3
  • the utility model comprises an upper part and a lower part which are connected to each other; the lower part of the lead-out positioning sleeve is sleeved with the lead-out end cover (for example, the lower part of the lead-out positioning sleeve is sleeve
  • the existing product also needs to be led out of the positioning sleeve 3, and the epoxy resin 7 is potted, and the structure is used to realize the insulation and positioning.
  • This structure not only increases the material cost of the product, but also further assembles the product. The operating process is complicated.
  • the object of the present invention is to provide a sealed cable lead-out capacitor formed by injection molding and an injection molding forming method, which mainly solves the complicated structure of the existing cable lead-out capacitor (especially, has a lead-out positioning sleeve), resulting in high product cost and assembly operation.
  • the complicated technical problem not only simplifies the product structure, reduces the cost, but also further simplifies the production process of the product, and also makes the capacitor have a good sealing property.
  • the present invention is achieved as follows:
  • a sealed cable lead-out capacitor formed by injection molding comprising a capacitor body having a capacitor core inside, the upper end surface of the capacitor body having a solder joint connecting the capacitor core and the lower end of the cable of the bow I;
  • the welding spot of the upper end surface is on the outlet end cover;
  • the injection molding plastic covers the upper end of the capacitor body and is connected with the upper end edge of the metal casing, the injection molding plastic will be wrapped around the end cover, and the lead cable is also positioned.
  • injection molding plastics In injection molding plastics.
  • the sealed cable lead-out capacitor formed by injection molding characterized in that: The upper end of the injection molding plastic is injection molded to form a lead-out tube through which the lead cable is passed.
  • the sealed cable lead-out capacitor formed by the injection molding is characterized in that: the lead end cover has a peripheral ring, and the peripheral ring surrounds the welding defect.
  • An injection molding method for forming a sealed cable lead-out capacitor formed by injection molding as described above characterized in that: it uses a special injection mold; the special injection mold is composed of upper and lower molds, and the cavity is sequentially from bottom to top The capacitor body slot, the peripheral ring positioning slot and the cable line positioning slot are disposed, and the top block is disposed under the capacitor body slot; the specific steps are:
  • the capacitor body is placed in the capacitor body slot of the injection mold, and the lead cable is placed in the cable positioning groove, and the outer ring on the end cover is placed in the outer ring groove;
  • top block on the injection mold is placed against the bottom of the capacitor body to fix the capacitor body to prevent displacement of the capacitor body during the injection molding process.
  • the top block is placed against the bottom of the capacitor body, resulting in the capacitor body upper edge and the capacitor body on the injection mold.
  • the upper edge of the groove is closely matched, and the upper space of the capacitor body forms an injection cavity;
  • the special injection mold further comprises an extraction tube injection groove, which is disposed between the peripheral ring positioning groove and the cable line positioning groove, and is used for injection molding of an injection molding structure in which an extraction pipe is to be provided.
  • the advantages of the present invention are: 1. Compared with the existing products, the invention does not need to process and pull out the positioning sleeve, and therefore, it is not necessary to add a cable to pass out and locate the process step of pulling out the positioning sleeve in the assembly process.
  • the invention does not need to fill the epoxy resin, and replaces the insulation and positioning function of the epoxy resin by the integral injection molding, which not only simplifies the operation, but also reduces the material cost.
  • the injection molded plastic of the capacitor of the present invention covers the upper end of the capacitor body and is connected to the upper end edge of the metal casing, and the injection molded plastic is integrally formed with the metal casing of the capacitor body, so that the capacitor has good sealing property.
  • 1 is a schematic structural view of a conventional cable take-up capacitor
  • FIG. 2 is a schematic structural view of Embodiment 1 of the present invention.
  • FIG. 3 is a schematic structural view of Embodiment 2 of the present invention.
  • FIGS. 4 and 5 are schematic structural views of a processing die of the present invention.
  • the present invention discloses a sealed cable take-up capacitor formed by injection molding, which will be further described in detail below through two embodiments.
  • a sealed cable lead-out capacitor formed by injection molding comprises a capacitor body 1 having a capacitor core inside, and an upper end surface of the capacitor body 1 has a solder core connected to a lower end of the lead cable 4 Solder joint 6;
  • the solder bump 6 of the upper end surface of the capacitor body 1 is on the lead end cover 2, and the peripheral ring of the end cap 2 is taken out to surround the solder joint 6.
  • the injection molded plastic 8 covers the upper end of the capacitor body 1 and is connected to the upper end edge of the metal casing.
  • the injection molded plastic 8 wraps the lead end cover 2 therein, and the lead cable 4 is also positioned in the injection molded plastic 8.
  • an injection molded cable lead-out capacitor includes a capacitor body 1 having a capacitor core inside, and an upper end surface of the capacitor body 1 has a capacitor core connected to a lower end of the lead cable 4
  • the solder joint 6; the solder bump 6 of the upper end surface of the capacitor body 1 is on the lead end cover 2, and the peripheral ring 9 of the lead end cover 2 encloses the solder joint 6 therein.
  • the injection molded plastic 8 covers the upper end of the capacitor body 1 and is connected to the upper end edge of the metal casing.
  • the injection molded plastic 8 wraps the lead end cover 2 therein, and the lead cable 4 is also positioned in the injection molded plastic 8.
  • the upper end of the injection molded plastic 8 is injection molded to form a lead-out tube 81 through which the lead cable 4 is passed.
  • the present invention also includes a take-up end cap 2 (not shown) that does not have a peripheral ring 9.
  • the lead-out capacitor of the above structure does not need to be provided with the lead-out positioning sleeve when the lead-out wire is taken out, and it is not necessary to perform the insulation positioning by filling the epoxy resin, and only a special injection mold 10 can be used.
  • the special injection mold 10 is composed of upper and lower molds, and a capacitor body groove 104, a peripheral ring positioning groove 103 and a cable positioning groove 101 are sequentially arranged from bottom to top in the cavity.
  • a top block 105 is disposed below the capacitor body slot 104. Its operation steps include:
  • the capacitor body is placed in the capacitor body slot 104 of the injection mold 10, and the lead cable 4 is placed in the cable positioning slot 101, and the peripheral ring on the outlet cover is placed in the peripheral ring groove 103;
  • top block 105 on the injection mold is placed against the bottom of the capacitor body to fix the capacitor body to prevent displacement of the capacitor body during the injection molding process. At the same time, the top block 105 is pressed against the bottom of the capacitor body, so that the capacitor body is closely matched with the upper edge of the capacitor body groove 104 on the injection mold, and the upper space of the capacitor body forms an injection cavity;
  • the product shown in Figure 2 was injection molded, and there was no extraction tube injection groove on the mold.
  • the injection molding structure of the extraction tube should be set on the mold - the extraction tube injection groove.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Description

一种注塑形成的密封式电缆线引出电容器及注塑形成方法 技术领域
本发明涉及电缆线引出形式的电容器结构, 特别是一种注塑形成的 密封式电缆线弓 I出电容器及注塑形成方法。
背景技术
现有的电缆线引出形式的电容器, 请参阅中国发明专利说明书(授 权公告号: CN201146106Y), 它公开了一种电缆线引出电容器。 如图 1 所示: 它包括内部具有电容器芯子的电容器本体 1, 该电容器本体 1上 端面具有电容器芯子与引出电缆线 4的下端相连接的焊接焊点 6; 该电 容器本体 1上端面的焊接焊点 6在引出端盖 2上, 引出端盖 2的外围环 9将焊接悍点 6围设其中, 在引出端盖 2的外围环 9套接一引出定位套 3; 该引出定位套 3包括由相互连通的上部和下部构成; 该引出定位套 下部与引出端盖套接(如: 该引出定位套的下部套设在引出端盖的外围 环 9 内); 该引出定位套上部设有一卡线结构, 该卡线结构为一设置于 上部的槽口结构, 槽口内壁对应设置有定位凸起; 该引出电缆线 4穿过 引出定位套 3的卡线结构内定位;在引出定位套 3内灌封有环氧树脂 7。 但是, 这种电缆线引出电容器确具有如下缺点:
1、需要加工具有卡线结构的引出定位套 3,因此,增加了生产成本。
2、 组装时, 不但需要将引出电缆线 4从引出定位套 3中穿出, 还 需要将引出电缆线 4定位在卡线结构中; 另外, 当电缆线引出定位结束 后, 还需要另外将引出定位套 3固定在引出端盖 2上; 由此可见, 现有 的产品在组装操作中工艺复杂, 对工人的操作要求相对较高。
3、现有的产品还需要引出定位套 3内灌封有环氧树脂 7,通过这个 结构来实现绝缘和定位的作用, 这样的结构不但增加了产品的材料成 本, 而且也进一步使产品的组装操作工艺复杂化。
如上所述, 由于现有的电缆线引出电容器的结构复杂(特别是具有 引出定位套), 造成产品成本高、 组装操作复杂。
发明内容
本发明的目的在于提供一种注塑形成的密封式电缆线引出电容器 及注塑形成方法, 主要解决现有的电缆线引出电容器的结构复杂(特别 是具有引出定位套), 造成产品成本高、 组装操作复杂的技术问题, 它 不但使产品结构简化、 成本降低, 也使产品的生产工艺进一步简化, 另 夕卜, 也使电容器具有良好的密封性。
为实现上述目的, 本发明是这样实现的:
一种注塑形成的密封式电缆线引出电容器, 它包括内部具有电容器 芯子的电容器本体, 该电容器本体上端面具有电容器芯子与弓 I出电缆线 的下端相连接的焊接焊点; 该电容器本体上端面的焊接焊点在引出端盖 上; 其特征在于: 所述的注塑塑料覆盖在电容器本体上端并与金属外壳 上端边缘连接, 该注塑塑料将引出端盖包裹其中, 而引出电缆线也定位 在注塑塑料中。
所述的注塑形成的密封式电缆线引出电容器, 其特征在于: 所述的 注塑塑料上端注塑形成有一引出管, 引出电缆线从该引出管中穿出。 所述的注塑形成的密封式电缆线引出电容器, 其特征在于: 所述的 引出端盖具有外围环, 外围环将焊接悍点围设其中。
一种如上所述的注塑形成的密封式电缆线引出电容器的注塑形成 方法, 其特征在于: 它使用一专用注塑模具; 所述的专用注塑模具由上 下模组成, 模腔内从下往上依次设有电容器本体槽、 外围环定位槽和电 缆线定位槽, 所述的电容器本体槽下方设有顶块; 具体步骤为:
A引出电缆线下端与电容器芯子的引出线进行焊接;
B将电容器本体放置于注塑模具的电容器本体槽中, 引出电缆线放 置于电缆线定位槽中, 引出端盖上的外围环放置于外围环槽中;
C启动注塑设备进行上下模合模;
D合模过程注塑模具上的顶块顶住电容器本体底部, 固定电容器本 体, 防止在注塑过程电容器本体发生位移; 同时, 顶块顶住电容器本体 底部, 导致电容器本体上沿与注塑模具上电容器本体槽的上沿紧密配 合, 电容器本体上部空间形成注塑腔体;
E注塑塑料;
F开模, 注塑完成, 取出产品。
所述的方法,.其特征在于: 所述的专用注塑模具还包括引出管注塑 槽, 它设置在外围环定位槽和电缆线定位槽之间, 用于注塑需设置引出 管的注塑结构。
藉由上述结构, 本发明的优点在于: 1、 本发明与现有产品相比, 无需加工引出定位套, 因而, 在组装 工艺中无需加入电缆线穿出并定位于引出定位套的工艺步骤。
2、 本发明与现有产品相比, 无需灌装环氧树脂, 通过一体注塑的 形式来替换环氧树脂的绝缘和定位功能, 不但操作简化, 而且还降低了 材料成本 o
3、 本发明电容器的注塑塑料覆盖在电容器本体上端并与金属外壳 上端边缘连接, 注塑塑料与电容器本体的金属外壳形成一个整体, 使得 电容器具有良好的密封性。
附图说明
图 1是现有的电缆线引出电容器的结构示意图;
图 2是本发明实施例 1的结构示意图;
图 3是本发明实施例 2的结构示意图;
图 4、 5是本发明的加工模具的结构示意图;
图中:
1-电容器本体; 2-引出端盖;
3-引出定位套; 4-引出电缆线;
5-引出焊片; 6-焊点;
7-环氧树脂; 8-注塑塑料;
81-引出管; 9-外围环;
10-注塑模具 (由上下模组成); 101-电缆线定位槽;
102-引出管注塑槽; 103-外围环槽; 104-电容器本体槽; 105-顶块。
具体实施方式
本发明公开了一种注塑形成的密封式电缆线引出电容器, 以下通过 2个实施例来进一步详细介绍。
实施例 1 :
请参阅图 2, 一种注塑形成的密封式电缆线引出电容器,它包括内 部具有电容器芯子的电容器本体 1, 该电容器本体 1上端面具有电容器 芯子与引出电缆线 4的下端相连接的焊接焊点 6; 该电容器本体 1上端 面的焊接悍点 6在引出端盖 2上, 引出端盖 2的外围环将焊接焊点 6围 设其中。 述的注塑塑料 8覆盖在电容器本体 1上端并与金属外壳上端 边缘连接, 该注塑塑料 8将引出端盖 2包裹其中, 而引出电缆线 4也定 位在注塑塑料 8中。
实施例 2:
请参阅图 3, 一种注塑形^ ^的密封式电缆线引出电容器, 它包括内 部具有电容器芯子的电容器本体 1, 该电容器本体 1上端面具有电容器 芯子与引出电缆线 4的下端相连接的焊接焊点 6; 该电容器本体 1上端 面的焊接悍点 6在引出端盖 2上, 引出端盖 2的外围环 9将悍接焊点 6 围设其中。所述的注塑塑料 8覆盖在电容器本体 1上端并与金属外壳上 端边缘连接, 该注塑塑料 8将引出端盖 2包裹其中, 而引出电缆线 4也 定位在注塑塑料 8中。 所述的注塑塑料 8上端注塑形成有一引出管 81, 引出电缆线 4从该引出管 81中穿出。 本发明还包括不具有外围环 9的引出端盖 2 (图中未示)。
上述结构的引出电容器在引出线引出定位时, 无需设置引出定位 套, 也不必通过灌装环氧树脂来进行绝缘定位, 只需使用一专用注塑模 具 10即可。 如图 4、 5所示: 所述的专用注塑模具 10由上下模组成, 模腔内从下往上依次设有电容器本体槽 104、 外围环定位槽 103和电缆 线定位槽 101, 所述的电容器本体槽 104下方设有顶块 105。 其操作步 骤包括:
1、 引出电缆线下端与电容器芯子的引出线进行焊接;
2、 将电容器本体放置于注塑模具 10的电容器本体槽 104中, 引出 电缆线 4放置于电缆线定位槽 101中, 引出端盖上的外围环放置于外围 环槽 103中;
3、 启动注塑设备进行上下模合模;
4、 合模过程注塑模具上的顶块 105顶住电容器本体底部, 固定电 容器本体, 防止在注塑过程电容器本体发生位移。 同时, 顶块 105顶住 电容器本体底部, 导致电容器本体上沿与注塑模具上电容器本体槽 104 的上沿紧密配合, 电容器本体上部空间形成注塑腔体;
5、 注塑塑料;
6、 开模, 注塑完成, 取出产品。
注塑如图 2的产品,模具上无引出管注塑槽。如注塑如图 3的产品, 模具上需设置引出管的注塑结构 --引出管注塑槽。

Claims

权 利 要 求
1、 一种注塑形成的密封式电缆线引出电容器, 它包括内部具有电 容器芯子的电容器本体 (1 ), 该电容器本体 (1 ) 上端面具有电容器芯 子与引出电缆线(4)的下端相连接的悍接焊点(6); 该电容器本体(1 ) 上端面的焊接焊点 (6)在引出端盖(2) 上; 其特征在于: 所述的注塑 塑料(8)覆盖在电容器本体 (1 ) 上端并与金属外壳上端边缘连接, 该 注塑塑料 (8) 将引出端盖 (2) 包裹其中, 而引出电缆线 (4) 也定位 在注塑塑料 (8) 中。
2、 根据权利要求 1 所述的注塑形成的密封式电缆线引出电容器, 其特征在于: 所述的注塑塑料 (8) 上端注塑形成有一引出管 (81 ), 引 出电缆线 (4) 从该引出管 (81 ) 中穿出。
3、 根据权利要求 1或 2所述的注塑形成的密封式电缆线引出电容 器, 其特征在于: 所述的引出端盖 (2) 具有外围环, 外围环将焊接焊 点 (6) 围设其中。
4、 一种如权利要求 1或 2所述的注塑形成的密封式电缆线引出电 容器的注塑形成方法, 其特征在于: 它使用一专用注塑模具 (10); 所 述的专用注塑模具(10) 由上下模组成, 模腔内从下往上依次设有电容 器本体槽 (104)、 外围环定位槽 (103 ) 和电缆线定位槽 (101 ), 所述 的电容器本体槽 (104) 下方设有顶块 (105); 具体步骤为:
A引出电缆线下端与电容器芯子的引出线进行焊接; B将电容器本体放置于注塑模具 (10) 的电容器本体槽 (104) 中, 引出电缆线 (4)放置于电缆线定位槽 (101 ) 中, 引出端盖上的外围环 放置于外围环槽 (103 ) 中;
C启动注塑设备进行上下模合模;
D合模过程注塑模具上的顶块 (105) 顶住电容器本体底部, 固定 电容器本体, 防止在注塑过程电容器本^ ε发生位移; 同时, 顶块(105) 顶住电容器本体底部, 导致电容器本体上沿与注塑模具上电容器^:体槽 ( 104) 的上沿紧密配合, 电容器本体上部空间形成注塑腔体;
Ε注塑塑料;
F开模, 注塑完成, 取出产品。
5、 根据权利要求 4所述的方法, 其特征在于: 所述的专用注塑模 具 (10) 还包括引出管注塑槽 (102), 它设置在外围环定位槽 (103 ) 和电缆线定位槽 (101 ) 之间, 用于注塑需设置引出管的注塑结构。
PCT/CN2010/001126 2010-02-05 2010-07-26 一种注塑形成的密封式电缆线引出电容器及注塑形成方法 WO2011094918A1 (zh)

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CN201796731U (zh) * 2010-02-05 2011-04-13 上海皓月电气有限公司 一种注塑形成的密封式电缆线引出电容器
CN103295778B (zh) * 2013-06-17 2015-12-09 上海皓月电气有限公司 全铝外壳电缆线侧向引出电容器、铝防护帽及形成方法

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CN201796731U (zh) 2011-04-13
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