Bottle blank heater

Abstract

The invention relates to the field of blow molding heating, in particular to a bottle blank heater. The bottle blank heater comprises a case. An operating console is arranged in the horizontal direction of the case and provided with a bottle blank supporting seat. Transmission of the bottle blank supporting seat is achieved through a transmission chain and the transmission chain is of an annular structure. Heating devices are arranged in the case and located on the two sides of the bottle blank supporting seat. A reflection board is arranged in the annular transmission chain. A temperature sensor is connected to the end of the reflection board. An automatic controller and a draught fan are arranged on the case. The temperature sensor, the automatic controller and the draught fan are electrically connected. Due to the arrangement of the temperature sensor and the draught fan, the temperature inside the case is distributed evenly and the bottle blank heating quality is improved.

Description

technical field [0001] The invention relates to the field of blow molding heating, in particular to a preform heater. Background technique [0002] Use polyester such as PET as raw materials to produce plastic packaging containers such as beverage bottles, oil bottles, medicine bottles and cosmetic bottles. It is necessary to inject the plastic raw materials into preforms first, then heat the preforms and put them into stretch blowing machines for blowing. forming. The quality of preform heating directly affects the qualification rate of plastic container molding products, so the composition of plastic preform heaters is the key equipment for two-step processing of plastic hollow containers. Before the plastic bottle is blow-molded, a heating device is required to heat the plastic preform. After the plastic preform becomes soft, the conveying mechanism will send the plastic preform to the blow molding machine for blow molding. The existing heating device mainly includes a ...

AI Technical Summary

Problems solved by technology

However, this device has the following problems: the plastic preform is generally placed on the support seat, and then it is rotated through a chain drive, and simultaneously receives the heating of the heating lamp tubes on both sides, however, the side of the preform that is away from the heating lamp tube cannot be heated. The heating of the heating lamp can only be heated by the opposite heating lamp which is relatively far away, so that the preforms are heated unevenly

However, there are the following problems: when the heating device heats the preform, the preform in the middle is heated at a relatively high temperature, and the temperature distribution inside the casing is uneven, so that the preform is heated unevenly

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