Production process of double-layer composite pad

Abstract

The invention provides a production process of a double-layer composite pad, which comprises the following steps: an injection mold of the double-layer composite pad is mounted on injection molding equipment, and the double-layer composite pad is composed of an injection molding body and a flexible material layer attached to the injection molding body; an injection mold is opened, a flexible material layer prepared in advance is put into the mold and then hung on a needle body fixedly arranged in the mold, all parts of the flexible material layer are in an unfolded state, and all the edges of the flexible material layer are located within the outer contour line of the edge of the double-layer composite pad product; and closing the mold, performing injection molding, and taking out after the product is molded. Under the condition that a key procedure (a finishing procedure) of an existing scheme is omitted, the product percent of pass and the production efficiency are greatly improved, the production procedure of the double-layer composite pad is more simplified, and the production cost is lower.

Description

technical field [0001] The invention belongs to the technical field of injection molding production of a double-layer composite pad, and in particular relates to a production process of a double-layer composite pad. Background technique [0002] The double-layer composite pad mentioned in the present invention refers to an injection-molded composite pad, the upper layer of which is an injection-molded body, and the lower layer is a flexible material layer attached to the injection-molded body. Automobile rear door armrest spring pad frame), filter pad. [0003] At present, the production process of most double-layer composite mats includes: installing the mold on the injection molding equipment, opening the injection mold, fixing the prepared flexible material layer into the mold and filling the cavity, adjusting the flexible material layer After closing the mold, injection molding, waiting for the product to take shape, open the mold to take out the semi-finished product, ...

AI Technical Summary

Problems solved by technology

[0004] However, the existing production process has the following disadvantages: 1. The process is cumbersome and the production cost is high. Each production line needs to set up a semi-finished product trimming station, and a number of workers are specially assigned to trim the semi-finished product; 2. The production efficiency is low, and the overall pass rate is still high. It needs to be improved. Each semi-finished product needs a worker to spend several minutes to complete the trimming. For the assembly line of mass production, the efficiency of the injection molding process must not be slowed down. Taking the production of the car door armrest spring cushion skeleton as an example, the daily life of a single production line The output is only about 700 pieces, and about 100 pieces of them need to be trimmed twice. The overall pass rate in the daily output (the overall pass rate after the first and second corrections) is 90-95%; 3. The difficulty of trimming semi-finished products Large, especially easy to cause sore hands and even sore arms of the operator; 4. The consumption of consumables is large and the amount of waste is large

Images