Spring-type shut-off nozzle... The removable spring unit has significantly improved maintainability.
【Application Fields】 Food containers, automotive parts, industrial products, medical devices, electronic devices, etc. 【Operation】 This nozzle opens due to injection pressure and closes again by the force of a spring. The needle moves coaxially with the body and is normally held in the closed position by the spring's force. In the initial position, the nozzle's orifice is typically closed. The increased pressure of the molten resin acts on the surface of the needle, retracting it at 200 bar, causing the nozzle to open. When the molten resin pressure decreases (≤ 80 bar), the needle advances due to the spring's force, and the nozzle closes. *Please select the nozzle size according to the injection rate (cm3/s). Examples of Application 【Suppression Effects】 • Dripping, stringing • Air entrapment due to suck-back • Resin leakage from the nozzle during metering • Resin leakage in vertical machines 【Productivity Improvement】 • Control of molten resin flow, reliable shut-off • Reduction of cycle time, improvement of productivity • Increased reliability and reproducibility during manufacturing • Enhanced utility due to increased back pressure, improved homogeneity due to better mixing • Easy installation • High add-on performance (tool side)
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basic information
・TSN00 Maximum Injection Rate: 50 cm3 / s Screw Diameter (Approx.): Up to about φ 20 mm Maximum Nozzle Contact Pressure: Maximum 30 kN Maximum Back Pressure (Nozzle Open): 200 bar Maximum Injection Pressure and Temperature: 2500 bar at 350°C Standard Chip Length: 14 mm Maximum Orifice Diameter: 3 mm ・TSN0 Maximum Injection Rate: 500 cm3 / s Screw Diameter (Approx.): Up to about φ 40 mm Maximum Nozzle Contact Pressure: Maximum 70 kN Maximum Back Pressure (Nozzle Open): 200 bar Maximum Injection Pressure and Temperature: 2500 bar at 350°C Standard Chip Length: 13/28 mm Maximum Orifice Diameter: 3 mm ・TSN1 Maximum Injection Rate: 800 cm3 / s Screw Diameter (Approx.): Up to about φ 80 mm Maximum Nozzle Contact Pressure: Maximum 120 kN Maximum Back Pressure (Nozzle Open): 200 bar Maximum Injection Pressure and Temperature: 2500 bar at 350°C Standard Chip Length: 18/38 mm Maximum Orifice Diameter: 5 mm
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Applications/Examples of results
This is a spring-driven needle-type shut-off nozzle. It is used for low-viscosity thermoplastic resins such as PA, PPS, PE, POM, and PP. - Used in a 120t vertical machine It has made it possible to prevent resin leakage, suppress stringing, avoid air entrapment issues, and shorten cycle times (by performing metering and mold opening/closing simultaneously) all at once. Additionally, since the TSN allows for the spring to be removed, maintenance is very easy, significantly reducing machine downtime. This not only contributes to increased productivity but also greatly helps in reducing maintenance costs. Furthermore, because it is spring-operated, no changes to the machine are necessary; simply installing it allows you to enjoy its benefits.
Detailed information
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This is a cut model of TSN0 and TSN1. The structure of the flow path, needle, and spring is clearly visible. During purging, the needle can be retracted, allowing the shut-off function to be disabled.
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This is a cut model of TSN00. It is a super compact shut-off nozzle, making it easy to attach even to small vertical machines with limited space, allowing users to enjoy the benefits of the shut-off nozzle.
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Please download the data sheet from our website and send it to the inquiry address. After confirming the specifications, we will provide drawings and a quotation. www.taihei-s.com tts-info@taihei-s.com
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Company information
Our company is engaged in the business of manufacturing special metal parts and surface treatments. Due to the wide range of fields and products, including titanium coatings such as TiN, TiCN, TiAlN, CrN, DLC, as well as injection molding machine parts like shut-off nozzles and mixing nozzles, it has become necessary to conduct sales engineering and provide a comprehensive introduction. We aim for the fusion and harmony of technologies across different fields and actively engage in sales engineering.