Heng Rui Machinery

Zhoushan City, Heng Rui Machinery Co., Ltd. Located in the motherland of the East China Sea, located in the beautiful scenery of Zhejiang Islands, the fourth largest island - the island of Jintang the verge of Shanghai, Ningbo, Zhoushan Port, the world's leading deep-water wharf adjacent.
Zhoushan City Heng Rui Machinery Co., Ltd. is a professional

Film Blowing Machine Screw Suppliers and Injection Molding Barrel Manufacturers

,we are design and manufacture of screw and barrel of production enterprises, the products are mainly used for injection molding machines, chemical fiber machine, film blowing machine, extruder, rubber machine plastic machinery and equipment.
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WHAT WE DO services

WHY CHOOSE US

  • Customization

    We can develop and produce all kinds of products according to customer’s drawings or samples.

  • Port of shipment

    We are close to Ningbo Port and Zhapu Port, so it’s convenient to deliver the products to any other country.

  • Ability

    Our monthly production capacity is more than 300 sets, can meet different requirements from different customers.

  • Services

    Our products are in line with international standards and are mainly exported to Europe, the United States, Australia, Asia and Africa.

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FAQ MORE+

1.HOW LONG CAN I GET THE FEEDBACKS AFTER WE SENT THE INQUIRY?+

We will reply you within 12 hours on workdays.

2.Are you a manufacturer or a trading company?+

We are a manufacturer, and we have foreign trade department. We market our own products.

3.What products can you offer?+

We mainly produce high precision screws and barrels.

News MORE+

  • Injection Molding Machine Cylinder Screw Design Principle:
    Injection Molding Machine Cylinder Screw Design Principle:

    The main part of the pin screw is a common screw. The pin can be arranged in the drop slot of the melting section or the metering section of the screw rod or on the smooth cylindrical surface with no screw groove at the end of the metering section. Pin arranged by a certain arrangement, density can vary, the number varies. The cylindrical pin is formed by fitting the pin into the hole of the screw; the square or diamond pin is formed by milling directly on the screw.
    If these pins are set in the melting zone, the pin can break the solid bed, destroy the two-phase flow, and stir the solid and liquid phases together to increase the contact area between the solid solution phase and the contained material and promote Melt. If the pins are located in the melt delivery zone, their main function is to divide the stream, increase the interface, change the direction of the stream, and rearrange the stream. Repeatedly diversion, confluence, changing the flow direction, the melt composition and temperature homogenization.
    Mixing section are set in the screw end of the ordinary screw section of the inward slotted structure, the outer diameter and the outer diameter of the screw equal. Grooves are divided into several groups, each group is the convergence of materials. Material is divided by the trench, to the convergence zone meeting, re-segmentation, convergence, the principle is similar to pin-type.
    Separate screw is characterized by the melting section in addition to the original a screw thread (known as the main screw), but also attached a thread (called the additional thread), the outer diameter slightly smaller than the outer diameter of the main thread, Different lead, deputy thread from the end of the feed section (and here associated with the feed section), after several threads, gradually and the main section of the homogenization section intersect.
    The screw thread groove depth and thread lead from the beginning of the feed section to the end of the homogenization are gradually changing, both the thread lead gradually narrowing from the width, the depth of the screw groove gradually lightening, the material can be the maximum compression.

    http://www.hr-screw.com

  • Injection Molding Machine Cylinder Screw Design Principle:

    The main part of the pin screw is a common screw. The pin can be arranged in the drop slot of the melting section or the metering section of the screw rod or on the smooth cylindrical surface with no screw groove at the end of the metering section. Pin arranged by a certain arrangement, density can vary, the number varies. The cylindrical pin is formed by fitting the pin into the hole of the screw; the square or diamond pin is formed by milling directly on the screw.
    If these pins are set in the melting zone, the pin can break the solid bed, destroy the two-phase flow, and stir the solid and liquid phases together to increase the contact area between the solid solution phase and the contained material and promote Melt. If the pins are located in the melt delivery zone, their main function is to divide the stream, increase the interface, change the direction of the stream, and rearrange the stream. Repeatedly diversion, confluence, changing the flow direction, the melt composition and temperature homogenization.
    Mixing section are set in the screw end of the ordinary screw section of the inward slotted structure, the outer diameter and the outer diameter of the screw equal. Grooves are divided into several groups, each group is the convergence of materials. Material is divided by the trench, to the convergence zone meeting, re-segmentation, convergence, the principle is similar to pin-type.
    Separate screw is characterized by the melting section in addition to the original a screw thread (known as the main screw), but also attached a thread (called the additional thread), the outer diameter slightly smaller than the outer diameter of the main thread, Different lead, deputy thread from the end of the feed section (and here associated with the feed section), after several threads, gradually and the main section of the homogenization section intersect.
    The screw thread groove depth and thread lead from the beginning of the feed section to the end of the homogenization are gradually changing, both the thread lead gradually narrowing from the width, the depth of the screw groove gradually lightening, the material can be the maximum compression.

    http://www.hr-screw.com

Knowledge of the screw MORE+

Standard injection screw General injection molding machine should use standard pitch diameter screw, matched with two high and low pressure conventional screws, widely applicable to the manufacturing of general-purpose plastics and engineering plastics.

Extended injection screw It is a universal type injection screw, which has good plasticizing capacity and compounding performance. The features: high draw ratio (20 - 25), long metering section (30%), light groove in metering section (0.04 - 0.05D), high compression ratio (0.11 - 012D).

Rigid PVC injection screw The features: low draw ratio, short metering section and transmission section, long compression section, deep groove in metering section, low compression ratio. It is suitable for injection moulding of rigid PVC and other plastics with poor thermal stability.