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Enterprise name: Zongsheng Precision Mould Co., Ltd. 

Contact: Mr. Nie 13923298099 (Wechat same number). 

Miss Jia 15820657628 (Wechat same number). 

Tel: 0757 2226 9630. 

0757 color 22269276. 

Email: 261909968@qq.com. 

QQ:261909968. 

Fax: 0757 2226 9631 22269276. 

Web site: en.fszongsheng.com. 

Add: no. 1, Rongye 6 road, Fengxiang industrial zone, Daliang, Shunde district, Foshan city, Guangdong province


Drawing rod

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Drawing rod

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  • Release date:2020/03/30
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拉伸杆

      In order to meet the requirements of the injection molding process on the mold temperature, the temperature control system is required to schedule the mold temperature. With regard to thermoplastic injection moulds, the primary intention is to plan a cooling system to cool the mold. 


      The common method of mold cooling is to set up a cooling water channel in the mold and use circulating cooling water to take away the heat of the mold; in addition to the hot water or steam in the cooling water channel, the heating element can also be installed inside and around the mold. 

Molded parts refer to all kinds of parts that make up the shape of the product, including dynamic die, mold base and cavity, drawing rod, molding rod and exhaust port, etc. the molded part is composed of core and mold. The core part constitutes the exterior and exterior of the product, and the concave die constitutes the appearance of the product. When closed, the core and cavity form the cavity of the mold. According to the requirements of process and manufacturing, the mandrel is sometimes composed of several pieces, sometimes made into a whole, and only inserts are selected in the parts that are easy to damage and difficult to process. 


      It is a trough-shaped air outlet, and the PET injection mold manufacturer opens it in the mold to discharge the original and molten gas. 

When the melt is injected into the mold cavity, the air in the mold cavity and the gas introduced by the melt need to be discharged from the mold cavity through the finished exhaust port. Otherwise, the product will have stomata, poor connection, unqualified filling, and even the accumulated air will burn out the product due to the high temperature caused by contraction. Generally speaking, the exhaust hole can be located not only at the end of the movement of the melt in the mold cavity, but also on the parting surface of the plastic mold. The latter is a shallow groove with a depth of 0.03 mm, 0.2 mm, and a width of 1.5 mm, located around the mold. During the eruption, there will not be too much liquid leakage from the exhaust hole, because the molten liquid will cool and condense there, and the passage will be blocked. The exit should not be opened in the direction of the operator to prevent accidental eruption of melts from injuring people. In addition, the cooperative vacancy between the ejector rod and the ejector hole, and the cooperative vacancy between the ejector block and the release template and the core can also be used for exhaust. 


      Refers to the various parts that make up the mold structure, including guide parts, demoulding parts, core-pulling parts and parting parts. 

Such as front and rear splint, front and rear buckle formwork, support plate, support column, guide column, release formwork, release rod, return rod and so on.


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Contact us

Foshan Shunde Zongsheng Precision Mould Co., Ltd. 

Tel: 0757 Tel: 22269630 / 13923298099 (Mr. Nie). 

Web site: www.fszongsheng.com. 

Add: no. 1, Rongye 6 road, Fengxiang industrial zone, Daliang, Shunde district, Foshan, Guangdong


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