Drawer type hot wind heating mechanism

Abstract

The invention relates to a drawer type hot wind heating mechanism belonging to the technical field of heating devices. The drawer type hot wind heating mechanism comprises a heating box body, a material placing drawer and a heating device, wherein the heating box body is provided with at least one heating cavity; one end of the heating box body is provided with at least one high-temperature air leading-in box in a separating way; the high-temperature air leading-in boxes are provided with high-temperature air leading-in interfaces; the other end of the heating box body is provided with lower-temperature air leading-out boxes in a separating way; the lower-temperature air leading-out boxes are provided with lower-temperature air leading-in interfaces; the material placing drawer is arranged in the heating cavity in a matching way; and the heating device is arranged in the heating cavity and comprises an air feeding pipe and an air discharging groove. The invention can save the energy, ensure that products obtain same surface heating effect without generating yin and yang, also ensure the subsequent compression molding effect of the products and prevent generating defective productsand scrap products.

Description

technical field [0001] The invention belongs to the technical field of heating devices, and in particular relates to a drawer-type hot air heating mechanism, which is used for heating such as automotive interior parts, rubber products, plastic products, fabrics such as felts or blankets, and packages before molding. Background technique [0002] Before carrying out compression molding to the above-mentioned but not limited to the above-mentioned products, heating is required, and after heating, the mold is formed while it is hot. Taking the interior panels of vehicles such as car roofs, inner door panels, rear shelves, trunk inner guards and sun visors as examples, the base material of the interior parts is heated by a heating mechanism and then put into mold molding. For example, natural brown hemp fibers with low density, good hygroscopicity, high strength and low cost are used with green environmental protection effects. After bonding the natural brown hemp fibers, they h...

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Problems solved by technology

[0004] The above-mentioned drawer-type heating mechanism has the advantages of simple structure and the ability to heat the products located in each heating chamber separately without interfering with each other, but the following shortcomings are exposed in the actual application process: First, the energy consumption is large, not only It is contrary to the spirit of energy-saving and economical economy advocated by the whole society at present, and increases the application cost; second, the heating time is long, and the length is 2-2.5m, the width is 1.5-1.8m and the thickness is 4-5cm. Take the felt used for automotive interior parts as an example, the heating time takes 6-9 minutes, which not only affects the processing (heating) efficiency but also leads to greater energy consumption; third, it is impossible to obtain a uniform heating temperature for the receptor, that is, the heated product. Because there is a gap between a group of electric heating tubes that constitute the heating device 3, the temperature of the part facing the electric heating tube is relatively high, while the temperature of the part away from the electric heating tube is relatively low, which eventually leads to the same heated product. The unbalanced phenomenon of one high and one low or one low and high temperature can not guarantee the quality of the product after molding; fourth, it is easy to make the heated product show two-sided or even three-sided phenomenon, because the heated product is facing the heating device The side of 3, that is, the side facing the electric heating tube, can undoubtedly obtain a heating effect that is superior to that of the moon, but the heating effect of the inner layer and the bottom layer of the heated product gradually declines, resulting in a yin and yang situation, the so-called The yin and yang situation refers to: the side of the heated product facing the electric heating tube has a high degree of softening due to ideal baking, the inner layer is slightly inferior, and the bottom layer is the side that is in contact with the drawer board of the aforementioned material drawer 2. Still showing If it is hard, it will crack when it is pressed into the mold, resulting in defective products, and it will be scrapped if it is serious; the fifth is that the electric heating tube is easy to cause damage. During the heating process of the material drawer 2, once any one or more than one of a group of electric heating tubes fails to heat, it will undoubtedly damage the heating quality of the heated product.

[0005] In view of the shortcomings of the aforementioned drawer-type heating mechanism, the applicant believes that it is necessary to improve it, and has carried out extensive searches for this, but none of the existing Chinese patent documents and non-patent documents have been retrieved. Some drawer-type heating mechanisms can be used for reference for the improvement of technical enlightenment

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