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What effects do the various components of an injection molding machine have?

2018-12-25

What functions does each part of an injection molding machine serve? The injection system: The injection system is one of the most critical components of a Ningbo injection molding machine, and it typically comes in three main types: plunger-type, screw-type, and screw-preplasticization-plunger-injection. Currently, the screw-type is the most widely used. Its function is to, during a single cycle of the injection molding machine,

The die on the production line is delivering material unevenly, resulting in inconsistent sheet thickness. How should this be addressed?

2020-04-16

① Inspect the die flow channels: remove accumulated and charred material from the channels to ensure they are smooth and free of blockages; if the channels are worn, repair them promptly. ② Adjust the die lip gap: use the adjustment bolts on both sides of the die to make fine adjustments to the die lip gap, and verify with a feeler gauge that the gap deviation at all measurement points is ≤0.05 mm. ③ Optimize melt pressure: appropriately increase the extruder screw speed to raise the melt pressure, thereby achieving more uniform melt distribution within the die. ④ Inspect the feeding system: ensure the feeder speed is stable, with no interruptions or blockages in material supply, so as to guarantee uniform feed of raw materials into the extruder.

How can scratches and pitting on the surface of PVC foam boards be addressed?

2020-04-16

① Scratch elimination: Inspect the traction unit, cooling water tank, and cutting machine table for contaminants and sharp protrusions; promptly clean and grind these areas to ensure smooth surfaces. Adjust the pressure of the traction unit’s press rollers to prevent excessive pressure that could cause hard friction between the sheet and the equipment. Additionally, install soft support rollers and protective pads along the sheet transport path to reduce contact wear. ② Mottling elimination: Enhance the drying degree of the raw material to remove moisture that can lead to the formation of tiny air bubbles. Clean the die flow channels of carbonized and accumulated material to ensure uniform melt discharge. Appropriately increase the die temperature to promote more thorough melt plasticization and minimize unplasticized particles. Finally, optimize the mesh count of the filter screen and increase the number of filtration stages to remove hard particulate impurities from the raw material.

What safety hazards exist during the production of PVC foam boards, and how can they be prevented?

2020-04-16

Core Safety Hazards and Preventive Measures: ① High-Temperature Burns: Extruders, die heads, and hot-melt materials can reach temperatures as high as 160–190°C. Protective barriers and high-temperature warning signs shall be installed around equipment, and operators must wear heat-resistant protective gloves and other protective gear. ② Mechanical Injuries: Transmission components such as screws, haul-off units, and cutting machines must be equipped with guards; before starting the equipment, ensure that all guards are securely closed, and it is strictly prohibited to reach into the machinery for cleaning while it is running. ③ Dust Pollution: Dust is generated during raw-material feeding and mixing. A dust collection and purification system shall be installed, and operators must wear dust masks. ④ Gas Leaks: The decomposition of blowing agents may produce small amounts of harmful gases. The workshop must maintain adequate ventilation, and harmful-gas detection and alarm systems must be installed.

Application of Convex-Point Steel-Plastic Geogrid in Construction

2019-12-16

Convex-node grating-reinforced steel grating is also known as metal wire wrapped in high-density polyethylene and joined by high-strength ultrasonic welding, with reinforcing tapes whose tensile strength can be adjusted according to engineering requirements and various design variations.

What safety precautions should be observed when operating a plastic shredder?

2020-12-29

The following safety precautions must be observed when operating a plastic shredder. During operation, operators must stay clear of the tangential plane of the hammer blades’ rotation; feeding materials by hand is strictly prohibited, hands must never extend beyond the safety guard, and it is absolutely forbidden to use metal tools or rods in place of manual feeding.

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+86-028-84211188

Address

Kaizhou New City Industrial Park, Zhongjiang County, Deyang City, Sichuan Province

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