Automatic filling system and method for single-component polyurethane sealing gum

Abstract

The invention discloses an automatic filling system for single-component polyurethane sealing gum. The automatic filling system is composed of a gum pump, a gum filling pipe, a platen, a tray and two hydraulic cylinders, and is provided with a gum filling starting position photoelectric switch, a full barrel position photoelectric switch and a barrel replacing position photoelectric switch from top to bottom, wherein the tail end of the gum filling pipe is provided with a high viscosity liquid pressure sensor. A filling method disclosed by the invention comprises the following steps of: (a) placing a gum filling barrel; (b) detecting whether the gum filling barrel exists; (c) lifting the gum filling barrel to a gum filling starting position; (d) starting the gum pump; (e) controlling the gum filling barrel to descend through a proportional valve; (f) judging whether the gum filling barrel is full; (g) stopping the gum pump; and (h) carrying out gum scraping operation. According to the system and method disclosed by the invention, the pressure of the sealing gum is kept within a certain range, so that the sealing gum overflowing and air mixing are avoided, the quality of the filled sealing gum is ensured, the advantages of high filling precision, low labor intensity, high work efficiency and stable quality of the filled sealing gum are achieved, and continuous and automatic sealed production is convenient to realize.

Description

technical field [0001] The present invention relates to a kind of one-component polyurethane sealant automatic filling system and method, more specifically, relates to a kind of one-component polyurethane sealant automatic filling system which can effectively avoid sealant overflow and outside air from entering and method. Background technique [0002] One-component polyurethane sealant is a high-strength room-temperature moisture-curing adhesive. It is a highly viscous ointment at room temperature and during production, with poor fluidity and high viscosity. After the sealant is made in the paddle-type horizontal glue making machine, it is usually pumped out from the glue chamber by the glue pump of the glue making machine, and then filled into the glue barrel through the rubber hose connected to the outlet of the glue pump. The method in the package. This traditional filling method adopts a glue filling method in which the glue barrel is fixed, and the glue plate and the...

AI Technical Summary

Problems solved by technology

However, there is a large amount of sealant in the waste tube that cannot be taken out, causing a lot of waste, and changing the tube itself is time-consuming and laborious.

[0005] (2) High labor intensity

Most of the work in the entire glue filling process is done by hand, which requires the cooperation of multiple people, the labor intensity is high, and automatic filling cannot be realized

[0006] (3) Low filling efficiency

Glue loading speed is slow, work efficiency is low, not suitable for continuous production

[0007] (4) Low filling accuracy

During the glue filling process, because the glue barrels are weighed on the platform scale, the manual shut-off of the glue pump has a large difference in each operation, resulting in a large error in the amount of glue filled in each barrel and poor consistency.

Filling accuracy is greatly affected by the operator's technical level and sense of responsibility

[0008] (5) The quality of glue loading is unstable

Due to the inevitable contact of the colloid with the air during the filling process, it will affect the storage period of the sealant from the can to the plastic bucket, and even cause quality accidents such as premature skinning and curing.

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