How can a hot runner make a two-color mold even more powerful?

What is a two-color mold

Two-color mold refers to two kinds of plastic materials injection molding in the same injection molding machine, divided into two molding, but the product is only a mold die. In general, this molding process is also referred to as two-shot molding and is usually completed by a set of molds and requires a special two-color injection molding machine. Two-color molds are increasingly popular on the market. This process can make the appearance of the product more beautiful, easy to change color without spraying, but the requirements for design and injection molding are high.

What is hot runner system

In plastic injection molds, in order to promote the flow of plastic melt in the cavity, the main flow path and the bypass flow path are heated by appropriate methods to keep the plastic in a molten state, and the continuous injection molding structure is a hot runner system.

Advantages and disadvantages of hot runner systems

advantage

Save raw materials, reduce injection cycle, increase production efficiency

100% raw material production, reduce the secondary material caused by the bad

Improve product quality (pressure, reduced product internal stress)

Extend mold life

No need to reserve flow path, reduce die size. Easy to set the gate position

Shortcomings

Rising mold costs

Maintenance warranty requires professional staff

Mold design should be fully tested

In the case of two-color mold manufacturing, it is necessary to use a hot runner

In the manufacture of two-color molds, hot runners are sometimes used. The hot runner molds are molds that use a heating device to keep the melt in the runner from solidifying. Because it is shorter than the traditional mold forming cycle and saves more raw materials, the hot runner mold has been widely used in various industrialized countries and regions in the world today.

The following situations require the use of a hot runner system:

1. The quality of strict injection products

2. A variety of plastic, multi-color co-injection process

3. The direction of the gate is a certain or vertical angle to the mold opening direction

4. Multi-layer mold One way to increase production without increasing the tonnage of the injection molding machine is to use multi-layer molds. That is, there are multiple mold sections on the mold. This mold is completely realized by the hot runner system.

5. The sprue opens inside the deep part. Some industrial products have very strict appearance requirements. The use of ten should not expose any traces of the gate. Small parts such as cosmetic lipstick covers and automobile interior parts. At this point, you need to place the gate inside the part. When the depth of the part is too large, it is not possible to use a cold runner gate, but only use a hot runner nozzle to inject into the interior of the part.

Mold Usage Hot Runner Benefits:

1. Shorten the molding cycle of parts. Many thin-wall parts produced with hot runner molds can be molded in less than 5 seconds.

2, save plastic raw materials, in the pure hot runner mold no production materials. It is an effective way to reduce material costs and material costs.

3, reduce fees and improve product quality.

4, eliminate the follow-up process, is conducive to production automation.

5, to expand the application of injection molding process.

Troughing idler, which is the most common idlers used on belt conveyor, is mounted on the carrying side, used for conveying bulk materials. Generally it consists of 3 rollers in equal length. The two outer rollers are inclined upward and the middle one is horizontal. The inclined degree can be 30°,35°and 45°, some can be up to 60° in suspended type. There are two basic types: standard type and ahead inclined type. The latter can also be present all through the conveyor to prevent the belt from sideslip.

A Troughing Idler is comprised of a central idler roll, which has a fixed width, and two or more wing idlers located on each side of the central idler roll. The wing idlers can be adjusted up or down to change the toughing angle, which affects the depth of the trough created by the conveyor belt as it moves.

The troughing idlers comprise a centre idler roll of a defined width, and 'wing' idlers on either side of the centre roll. Unlike the centre, horizontal roll, the wing idlers are cranked up to an angle known as the troughing angle. This troughing angle ensures that the carrying belt maintains the same cross-sectional area throughout the carrying strand, so that the load-bearing capacity of a particular conveyor belt is the same along the conveyors' full length. In so doing, material loaded to the maximum capacity at the loading point will not fall off of the belt en-route.

Troughing idlers usually deep groove ball Bearing For Conveyor Idler roller.

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