Disposable assembly molding processing method for split traffic barricade

Abstract

The invention discloses a disposable assembled formation processing method for a split type traffic roadblock. The disposable assembled formation processing method comprises the following steps: selecting raw materials, cleaning a die, pre-softening (drying the raw materials, heating and plastifying by an extruder and extruding a tube blank), closing the die, raising a lower die to form a sealed space between the lower die and a base, blow molding, backing off the lower die, then opening an upper die to obtain a product, and removing edge thorns from the product to finally obtain a finished product. According to the disposable assembled formation processing method, as pressure in a die cavity is utilized in the preparation method, a conical body material completely wraps the contact surface of the base and a conical body, and combination is firmer; and in addition, the conical body also has the natural phenomenon of cooling shrinkage to more tightly and firmly grasp the base, so that the phenomenon that the base is separated from the conical body becomes nearly impossible. The disposable assembled formation processing method also reduces assembly work in later period and can directly lower the production cost.

Description

technical field [0001] The invention belongs to the field of road safety protection equipment processing, and in particular relates to a processing technology of split traffic roadblocks. Background technique [0002] A traffic barrier is a traffic facility including a base and a cone, which is mainly used to temporarily block or separate traffic flow and guide traffic in road construction. It is one of the widely used traffic facilities. At present, the common traffic roadblocks are basically divided into two types: round and square in terms of appearance; in terms of color, they are mainly red and black, and the round roadblocks are mainly red. , square roadblocks are mostly black; from the processing technology, the common ones are injection molding, blow molding and die-casting, etc., and blow molding is the main one; The one-piece cone-shaped traffic barrier means that the cone and the base are processed at one time, while the split type processes the cone and the base...

AI Technical Summary

Problems solved by technology

Features: The mold is simple, and the requirements for production equipment are not high; Problems and disadvantages: Because two additional sand pipes need to be processed, the cost is high and there are many processing procedures. The entire production needs to go through cone blow molding, sand pipe blow molding, sand There are many processes such as pipe sand loading, cone sand pipe loading, etc. In addition, if the amount of sand in the sand pipe is insufficient, it is easy to cause the sand pipe to fall off during use, and the insufficient weight of the product will lead to poor function of the product.

Features: The mold is more complicated, and the requirements for production equipment are relatively high

The stretching characteristics of plastic blow molding determine that the base of this kind of traffic road sign should not be too thick, otherwise it is easy to cause high scrap rate in production

The sand is directly loaded into the base, and a hole needs to be opened on the base. The thickness of the base determines that the hole should not be too large, and the sand filling hole is too small, which increases the difficulty of filling the sand. Therefore, the main problem of this kind of road sign is the comparison of production efficiency. Low, which increases the production cost, and the plastic of the base part is over-stretched, which is easy to cause insufficient thickness, and it is easy to be scrapped due to the sand leakage caused by the bottom wear during use

[0006] Two-piece plastic traffic barriers (such as image 3 As shown), the cone and the base are processed separately. Generally, the cone is made of plastic blow molding, while there are many kinds of bases. Some are filled with sand or grout after hollow blow molding, some are integral rubber, and there are also polymers. Vinyl chloride die-casting, etc. After the cone and the base are produced separately, they need to be assembled manually. The cone and the base are fixed on the cone by the slot at the bottom of the cone. If the slot is too deep, The cone cannot be installed, and if the slot is too shallow, it is easy to separate the cone from the base due to factors such as moving, impact, thermal expansion and contraction, etc.

In addition, because the height of the card slot at the lower part of the cone is fixed, it determines that the base cannot be replaced casually

And the existing assembling method must guarantee that the draw-in groove on the cone will be smooth and smooth, and the width of the draw-in groove will be slightly greater than the thickness of the inner edge of the base (such as Figure 4 shown), otherwise the base will not fit on the cone

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