Bottle blowing machine

Abstract

The invention provides a bottle blowing machine which comprises a control module, a heating group, a tension group, a molding group, a base as well as a clamp claw group and a rotating group. Due to adoption of the heating group, temperatures at different parts of a bottle blank can be precisely controlled, optimal temperatures can be achieved for different parts of the bottle blank, and then thequality of a bottle after bottle blowing molding can be improved; the whole production process is fully automatically carried out, and the efficiency is greatly improved; in addition, the bottle blankjust after injection molding can be heated in time by using the heating group, the waste heat of the bottle blank can be utilized, and thus energy consumption for heating the bottle blank before bottle blowing can be reduced.

Description

【Technical field】 [0001] The invention relates to bottle manufacturing technology, in particular to a bottle blowing machine. 【Background technique】 [0002] At present, most blow molding machines are still two-step blow molding machines, that is, the plastic raw materials must first be made into preforms, and then blown. The preform blowing process first heats the preform, then puts the preform into the cavity of the forming mold, and then stretches the stretching rod of the stretching group above the forming mold into the preform, and compresses the gas from the inside of the stretching rod The blowing channel blows into the preform for blowing. Moreover, most of the injection molded preforms and blown bottles are divided and cooperated by different manufacturers. Such a production method makes the preforms need to be transported to the bottle blowing factory for blowing after injection molding. The whole process requires a waste of manpower and material resources for tra...

AI Technical Summary

Problems solved by technology

Moreover, most of the injection molded preforms and blown bottles are divided and cooperated by different manufacturers. Such a production method makes the preforms need to be transported to the bottle blowing factory for blowing after injection molding. The whole process requires a waste of manpower and material resources for transportation. The injection molded preforms have a certain residual temperature. However, after transportation, the preforms will be cooled. When they arrive at the blowing factory, the preforms need to be reheated. Generally, the common blowing machines use super-long heating systems. To bake the preform to reach the melting point of the material, and then blow the bottle, which takes a long time and consumes a lot of energy, low production efficiency and high cost. At the same time, the waste heat of the preform that has just been injected with residual temperature is wasted, which is different from the current Contrary to the energy saving and emission reduction advocated by the state, the economic benefit is small

[0003] Because the preform has a temperature when it is just injected, if the original preform is reheated from the cooling state to the temperature that meets the blowing requirements, then the heating power for the same heating time will be different for the preform that has just been injected. Exceeding the required temperature will affect the quality of bottle blowing. Therefore, the existing heating group cannot meet such heating function requirements

[0004] In addition, because the shape of each part of the bottle blown by the preform is not the same, the temperature requirements of each part of the preform are inconsistent. Most of the PP bottle blowing machines sold on the market use multiple heating boxes for heating. The preform adopts a uniform heating temperature as a whole, so that the inside and outside of the preform are heated unevenly during heating, and the temperature of each part of the preform cannot be precisely controlled, which affects the quality of the bottle.

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