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drying device

A drying device and exhaust port technology, which is applied in the direction of drying gas arrangement, drying solid materials, non-progressive dryers, etc., can solve the problems of cost increase and device large-scale, and achieve the purpose of inhibiting oxidation, inhibiting temperature drop, and improving The effect of drying efficiency

Active Publication Date: 2020-12-08
KAWATA MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, adding a heating unit will increase the size of the device, and also increase the cost of manufacturing and operating the device.

Method used

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Embodiment Construction

[0030] Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

[0031]

[0032] figure 1 It is a figure which shows the structure of the drying apparatus 1 which concerns on one Embodiment of this invention. This drying device 1 is a device that dries resin pellets 9 that are powder materials and supplies the dried resin pellets 9 to a subsequent injection molding machine 2 .

[0033] The drying device 1 of the present embodiment takes resin pellets for optical products as processing objects. The resin particles for optical products refer to a resin that can transmit 90% of visible light, and specifically, polycarbonate, COP resin (Cyclo-olefin polymer), or acrylic resin can be mentioned. The resin pellets 9 discharged from the drying device 1 are molded in the injection molding machine 2 to become a transparent optical product such as a light guide plate. In the molding process of transparent optical products, preven...

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Abstract

The invention provides a drying device which can suppress temperature reduction of heated and dried powder material in a discharging pipe. The drying device (1) is provided with the components of a storage trough (10) for storing the powder material, namely resin particles (9); a first circulating pipe (30) which heats air discharged from the storage trough (10) through a heater (33) and introduces the heated air to the storage trough (10); and a discharging pipe (41) which discharges the resin particles (9) out of the storage trough (10). The resin particles (9) in the storage trough (10) aredried through the hot air which is introduced from the first circulating pipe (30). Furthermore the drying device (1) is provided with a second circulating pipe (50) which connects a second air outlet on the discharging pipe (41) with the first circulating pipe (30). One part of the air in the storage trough (10) flows from the discharging pipe (41) to the second circulating pipe (50). Therefore,temperature reduction of the resin particles (9) in the discharging pipe (41) can be suppressed.

Description

technical field [0001] The present invention relates to a drying device that dries a material composed of powder or granules (hereinafter referred to as "powder material") and supplies it to a subsequent device. Background technique [0002] Conventionally, in the molding process of plastic products, powder materials such as resin pellets are stored in a storage tank using a drying device and dried, and then the dried powder materials are supplied to an injection molding machine. In this drying device, the powdery material is heated and dried by supplying hot air to the inside of the storage tank. In addition, the lower part of the storage tank is connected with the injection molding machine through a discharge pipe. The heated and dried powder material is supplied from the storage tank to the injection molding machine through the discharge pipe. [0003] About the conventional drying apparatus, it describes in patent document 1, for example. [0004] prior art literature...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F26B11/00F26B21/00F26B21/14F26B25/00
CPCF26B11/00F26B21/001F26B21/003F26B21/14F26B25/00
Inventor 帆山克明
Owner KAWATA MFG
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