Welcome to the official website of Zongsheng Precision Mould Co., Ltd., Shunde District, Foshan City!

0757-22269630

Sitemap | RSS | XML |
PET瓶坯模具

category

Product Categories

contact us

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


What is the reason for the uneven thickness at the bottom of the bottle blown by the bottle blowing machine, and what is the use of the drawing rod?

Your current location: Home >> News >> Company newsletter

What is the reason for the uneven thickness at the bottom of the bottle blown by the bottle blowing machine, and what is the use of the drawing rod?

Release date:2020-03-26 Author: Click:

       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 the injection mold for thermoplastics, the first 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.

拉伸杆

       

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. 


1. Time: lengthen the drawing time (different manufacturers call it differently, which can also be called "blowing time delay"). In short, one truth is to let the drawing rod blow immediately after it reaches the bottom of the mold! 

If the air is not blown in place, the center of the bottom of the bottle will not be positioned correctly, offset and so on! 

The parameter to be adjusted refers to the time it takes to stretch the rod to the bottom of the bottle mold! 


2. Temperature: the temperature at the top of the bottle billet (the bottom of the bottle, at the gate) should not be too high as far as possible. 

If the temperature is too high, the bottom of the bottle can not bear the impact of the tension rod, there will be a direct breakdown of the bottom of the bottle, or priority stretching, expansion of the soft part, the bottom of the bottle will be thinner than the bottle body, or directly blown out and so on!


URL of this article:http://en.fszongsheng.com/news/444.html

Recently Viewed:

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


Follow us

瓶坯模具厂家

Wechat official account

网站.png

Mobile phone official website

  • Service
  • Contact
    15820657628
  • Message
  • Mobile site
  • inquiry
    Welcome message
    Enter it here.
    name
    contacts
    Tel
    phone
    mailbox
    mailbox
    adress
    adress