Air filter element polyurethane (PU) end cover foaming, curing and height-limiting device

Abstract

The invention relates to an air filter element polyurethane (PU) end cover foaming, curing and height-limiting device which comprises a lower-layer assembly line, an upper-layer assembly line, screw rod synchronous lifting mechanisms, positioning mechanism and multiple heating plates. The positioning mechanisms comprise bases, guide pillars and upper-layer fixing frames arranged on two sides of the upper-layer assembly line; guide sleeves are arranged on the upper-layer fixing frames; the guide pillars are arranged on the bases; the upper-layer fixing frames are arranged on the guide pillars through the guide sleeves in a sleeving way; the lower-layer assembly line is arranged on the base and comprises a conveyor chain plate; a chain plate supporting plate is arranged under the upper-end conveyor chain plate; a heating plate is arranged on the lower end face of the chain plate supporting plate; and the screw rod synchronous lifting mechanisms comprise screw rod servo motors, speed reducers, screw rods and couplers. According to the device, the foaming height of a filter element is limited through the height between the upper-layer assembly line and the lower-layer assembly layer, so that the consistency of the filter element height is good, the foaming quality is good, the appearance of the product is not affected, and the labor intensity of workers is reduced.

Description

technical field [0001] The invention relates to a foaming and curing height limiting device for a PU end cover of an air filter core. Background technique [0002] The cylindrical PU air filter element is formed by pouring PU glue into the PU end cover mold, inserting into the filter element body, and then heat sealing and foaming to form a whole. In the process of heat sealing, foaming, and shaping, it is necessary to maintain the temperature required for PU foaming, and it is necessary to control the height of the filter element, the parallelism of both ends, and the verticality of the filter element body and the end cap. [0003] The traditional production method is to use a ring-shaped production line. The production line is equipped with insulation facilities and filter element height limit tooling for a single filter element. This method can also achieve heat preservation and height limit for the foaming process of the filter element, but it needs to be inserted manual...

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Problems solved by technology

[0003] The traditional production method is to use a ring-shaped production line. The production line is equipped with insulation facilities and filter element height limit tooling for a single filter element. This method can also achieve heat preservation and height limit for the foaming process of the filter element, but it needs to be inserted manually. The plastic injection molds of the filter elements are put into the tooling installed on the production line one by one. This production method has the following disadvantages: First, at least one manual position needs to be set up to manually load the products into the height-limited tooling one by one. Inside, after foaming, it is necessary to manually take out the products one by one, and the labor intensity of the workers is high; second, the production efficiency and degree of automation are not high; third, the assembly line needs to be equipped with multiple tooling, and each tooling is independently controlled. Due to manufacturing and assembly errors, it is easy to have a problem of deviation in the consistency of the filter element; Fourth, in the process of manually lifting the mold and moving it into the tooling, due to the relatively many operations of loading into the tooling, the mold is prone to imbalance and cause internal PU The inclination of the rubber surface is not horizontal, which will cause the PU end cover of the filter element to overflow after the PU glue is foamed and shaped in the later stage, and the phenomenon of uneven flashing will affect the appearance quality of the product, and in severe cases, it will also affect the quality of the filter element and the assembly. finished assembly

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