Hot air oven with air channel switching function

Abstract

A hot air oven with an air channel switching function comprises a pair of air channel boxes, wherein each air channel box is equipped with a hot air channel box door, a hot air inlet channel and an air return channel are formed in each air channel box, upper hot air inlets communicated with the hot air inlet channel are formed in the upper part of an air channel partition board at intervals, lowerhot air inlets communicated with hot air inlet channel are formed in the lower part of the air channel partition board, upper air return devices and lower air return devices are arranged in the air return channel, upper air doors are arranged in the positions corresponding to the upper hot air inlets, and lower air doors are arranged in the positions corresponding to the lower hot air inlets; a hot air downward penetrating mechanism is arranged between upper parts of the pair of air channel boxes, and a hot air upward penetrating mechanism is arranged between lower parts of the pair of air channel boxes; and a hot air generation mechanism is arranged between tops of the pair of air channel boxes and is communicated with the hot air inlet channel and the air return channel. The hot air oven has the characteristics that the hot air oven also comprises an air channel switching control mechanism arranged on the pair of air channel boxes and connected with upper air doors and lower air doors. The fiber bonding effect is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of non-woven machinery, and in particular relates to a hot air oven with an air channel conversion function. Background technique [0002] The hot air oven is one of the indispensable equipment in the complete hot air non-woven product production system or production line. The function of the hot air oven is to make the high-temperature hot air penetrate the non-woven fabric layer or the cotton net layer, so that the synthetic fiber shows a glass state, a high elastic state, a softened state and a molten state when heated, and finally makes the low-melting point fiber and / or synthetic fiber Bond each other and cool and shape naturally in a hot air oven. In this regard, you can refer to the following patent documents without limitation: CN201428045Y (hot air penetration oven), CN202292956U (a hot air penetration cooling shaping oven), CN201537998U (circulation hot air oven), CN201081519Y (circulation hot air...

AI Technical Summary

Problems solved by technology

However, some non-woven products, such as felt pads used as automotive interior parts, have a large thickness, that is, a large grammage, and only one high-temperature hot air penetration from top to bottom is often not enough to achieve the full fiber coverage of the entire felt pad expected by the industry. At the ideal degree of bonding, if the hot air alternates several times from top to bottom and bottom to top, then the mutual bonding effect of the fibers of the felt mat can reach the extreme level

However, if the on-demand conversion between the upper air intake and the lower air outlet and the lower air intake and upper air outlet is to be satisfied, a reasonable structure must be provided to ensure it. There are technical inspirations for reference, and the technical solutions to be introduced below are generated under this background

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