Laboratory Injection Molding Machine

Model

AT-P6160 series

Applications

It is used to prepare laboratory-grade plastic specimens in dumbbell, strip, round, or other shapes that conform to ISO and ASTM standards.

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Laboratory Injection Molding Machine Overview

A laboratory injection molding machine is used to melt plastic granules, inject them into a mold, and then cool and mold them into a plastic part of a specific shape. Its core function is to prepare plastic test specimens. By using different molds, it can injection mold test strips conforming to standards such as ISO, ASTM, and GB, used to test the mechanical and thermal properties of materials. Researchers can also use it to test small quantities of expensive new materials or formulations to verify their ease of processing and the performance of the finished product.

Injection Molding Machine Operating Principle

Plastic particles are fed into the extruder inlet of the injection molding machine. Under the influence of heating and the powerful shearing force generated by the screw rotation, the material is melted and plasticized. The plasticized melt is conveyed to the front end of the screw, a process that simultaneously ensures precise metering of the material needed for the next injection. The screw propels forward linearly like a piston, injecting the melt from the storage zone into the mold cavity at a set speed (or pressure). Once the cavity is filled, the screw maintains pressure, replenishing the material lost due to cooling shrinkage to prevent shrinkage marks in the product. The product cools and solidifies in the mold. After the product cools and hardens, the mold automatically opens, and the ejector mechanism ejects the product, completing one production cycle.

Detailed Description of Equipment

Our laboratory injection molding machines come standard with a 22mm diameter screw. This screw can handle most materials. For special materials such as PET, we will configure a dedicated screw for the machine. As it rotates, the material is gradually melted and plasticized under the friction and shearing forces of the screw channels, pushing the molten material to the head of the screw for storage and injection. Under the piston thrust of the injection cylinder, the screw injects the molten material in the storage chamber into the mold cavity through the nozzle at high speed and high pressure. The standard machine has a single injection volume of 40g and a clamping force of 20 tons.

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We can configure different molds for the machine according to the different shapes and sizes of the test samples. If a machine needs to produce many different types of samples, we will configure a master mold and a slave mold. A mold consists of a master mold and multiple slave molds. The master mold is fixed in the mold area of the machine, and slave molds with different cavity shapes and sizes can be installed on the master mold as needed to achieve injection molding of various different samples. Slave molds can be quickly changed, which is not only convenient to use but also saves on the overall mold cost.

Lab Injection Molding Machine - Technical Specifications

	Model	Unit	AT-P6160-20
Injection unit	Screw diameter	mm	22
	Injection pressure	kg/cm2	2170
	Injection volume	G/OZ	40/1.4
	Screw stroke	mm	110
	Nozzle stroke	mm	150
Mold clamping unit	Clamping Force	Tons	20
	Platen size	mm	380*290
	Tie-bars spacing	mm	250*200
	Min mold thickness	mm	100/40
	Mold opening stroke	mm	215
	Max mold opening distance	mm	255/315
Power unit	Max hydraulic pressure	kg/cm2	140
	Motor power	KW	4(5HP）
	Total power consumption	KW	6
Others	Machine weight	kg	1000
Others	Machine dimensions	kg	2020×600×1400mm

Lab Injection Molding Machine Video

Lab Injection Molding Machine Features

The injection molding area features a horizontal layout for easy operation.
The processing area is physically isolated from the outside environment to ensure safety.
Static temperature control accuracy reaches 1 degree Celsius.
The system uses a 32-bit CPU design, offering fast processing speed, precise control, and high stability.
It features a high-brightness LCD display screen.
It has a production statistics function, automatically recording the daily and hourly output for the past 15 days.
It can store hundreds of mold data.
It supports displaying multiple curves: injection curve, speed curve, temperature curve, servo real-time curve, and historical curve.
It is compatible with and customizable for various ISO & ASTM molds.
It supports Quick Changing Mold.
Molds can be cooled by water circulation.
Operation is simple and maintenance is easy.