Car roof production line and heating method

Abstract

The invention provides a car ceiling production line and a heating method. The production line sequentially comprises an automatic conveying system, multiple heating furnaces, a compression molding machine, a facing material laying and feeding device, a cutting device and an accessory assembly table, wherein the multiple heating furnaces are connected in series; multiple temperature control areasare arranged on the heating furnaces; and main control boxes and temperature control tables which are used for independently controlling the temperature control areas are arranged on the heating furnaces. By using the car ceiling production line and the heating method, the product quality is greatly improved, and the waste loss rate is reduced from 2.1% to 0.3%; and meanwhile, the equipment productivity is increased, the production efficiency is greatly improved, and the output per shift is increased from 250 to 420.

Description

technical field [0001] The invention relates to a processing of a car roof fabric, in particular to a car roof production line and a heating method. Background technique [0002] The traditional ceiling production line basically adopts the traditional single furnace, single sheet far-infrared heating, and integral temperature adjustment equipment, which has the following disadvantages: [0003] 1. The heating time of single furnace and single sheet (75-85S) is longer than the pressure-holding time (50-60S) required by the product itself, which seriously affects production efficiency and production capacity; [0004] 2. The temperature zones on both sides of the furnace body and the front and rear ends are difficult to adjust (fast heat dissipation). Since the PU sheet enters and exits the heating furnace is not fully enclosed, part of the heat from the front and rear sides is lost. Secondly, the air flow in the furnace will cause uneven heat distribution. Even (higher temp...

AI Technical Summary

Problems solved by technology

[0003] 1. The heating time of single furnace and single sheet (75-85S) is longer than the pressure-holding time (50-60S) required by the product itself, which seriously affects production efficiency and production capacity;

[0004] 2. The temperature zones on both sides of the furnace body and the front and rear ends are difficult to adjust (fast heat dissipation). Since the PU sheet enters and exits the heating furnace is not fully enclosed, part of the heat from the front and rear sides is lost. Secondly, the air flow in the furnace will cause uneven heat distribution. Even (higher temperature in the middle, lower on both sides), resulting in the heating temperature of some areas of the PU sheet not reaching the required value;

[0005] 3. According to the modeling characteristics of the product and the thermoplastic material characteristics of the PU sheet, the stretching rate of each area of ​​the sheet when the product is formed has different temperature requirements. The area with a steeper surface such as: A / C pillar, front The required temperature value of the dome light sheet is relatively high, and the required temperature value of the flat area such as the middle of the ceiling can be slightly lower, while the temperature adjustment of traditional equipment cannot meet the different temperature requirements of each area;

[0009] The sheet is not fully baked, resulting in uneven phenomena such as pits and pits on the surface of the ceiling

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