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Injection molding evolved from a manual process in the 1940s, when machines were virtually unsophisticated arbor presses in which plastic was squeezed into a mold that was manually clamped by hand. The injection molding machine converts granular raw plastic into final molded parts through the use of a melt, inject, pack and cool cycle for thermoplastics. A basic injection molding machine is typically composed of the following: injection system, hydraulic system, mold system, clamping system and control system.

The clamping tonnage and shot size are both used in identifying the dimensions of the injection molding machine for thermoplastics, which is the main factor in the whole process. Other consideration include rate of injection, pressure, design of screw, thickness of the mold and distance between tie bars.

An injection-molding machine performs the entire process of plastic molding services. These machines serve to both heat the plastic material and form it. Using different molds the shape of the produced components may be changed. Injection molding machines have two basic parts, the injection unit, which melts the plastic and then injects or moves it into the mold, and the clamping unit, which holds the mold. The unit clamps the mold in a closed position during injection, opens the mold after cooling, and ejects the finished part.

The injection molding machine can be classified into three categories, namely: general purpose machines, precision/tight-tolerance machines and high-speed thin-wall machines. All three types require auxiliary equipment to function. These support equipment includes dryers (resin), material handling equipment, granulators, mold temperature controllers and chillers, part-handling equipment and part-removal robots.

Vertical Injection molding machine

Horizontal injection molding machines with automatic unload systems are a common sight. Walking through the plant floor of any number of custom molding companies will provide a good illustration of gantry systems that unload finished molded product directly from horizontal molding presses.

The term robotic un loaders is the common phrase used to describe unload equipment in the molding industry.

Indeed, the vertical injection molding industry would seem to be a natural fit for robotics - labor costs for three shifts, repetitious manual motion, and dedicated presses to meet customer production demands are common in the molding industry. A robotic terminal load system, which could reduce labor, eliminate potential Carpal Tunnel Syndrome, and increase overall production, would seem to be a wise investment. Until recently, however, the vertical molding industry as a whole has shied away from using robots as an integral component for insert loading applications.

Features:

Performance High.

The latest technical expertise of satisfied needs based on the built-up of experiences and know-how.

The Result of improvements on operation, stability with speed and preciseness, space saving, robot and other automatic equipment interfaces and many others

User-friendly versatility and high performance.


Advantages of Vertical injection molding machine:

Installation floor space is about one half space as compared with horizontal machine with same capacity. That means a productivity of the vertical machine doubles in comparison with the horizontal in terms of the floor space.

The vertical machine facilitates insert molding or plastic-metal combined part molding, because a mold face is in horizontal plane to put the metal parts securely onto the mold.


Durability of alignment of a mold clamp-unit and the mold in the vertical machine are much superior to that in the horizontal machine, because the heavy mold is supported on the horizontal mold platen in the vertical clamp-unit and opened/closed without any dis-location by gravity.

Various automated equipments can be easily attached onto the vertical clamp unit, because surrounding (front, rear, left and right) of the unit is open and clear in 4 post-clamp units.

Then the vertical machine is most suitable for fully automatic operation without attendant.

Formerly the horizontal machine seemed suitable for fully automatic operation by dropping down of molded parts out of the mold, however; recently, molded parts are taken out by robot even in the horizontal machine.

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