Kisco

Seiki Hot Runner System

Seiki Valve Gate System
Our valve gate system has a ˇ§Toplessˇ¨ design. The valve pin shuts off directly to the gate in the cavity. There are two types of systems: a single heater system and a double system. The single heater system uses the body heater only to control the temperature. The double heater system has a body heater and a probe tip heater to gain a separate control over the temperature around the gate.

Features
ˇ§Toplessˇ¨ structure, -- the gate is cut directly into the cavity in order to the most cooling. With a double heater system (the probe has separate heaters for a tip and a body), the tip heater synchronizes the molding cycle to employ the intermittent heating method. This system also facilitates the molding of the crystalline resins.

Advantages of runnerless molding
Utilize the material to the fullest. 100% of the material is processed in to the product.
No need for secondary processing.
Shorter molding cycle improves profitability.
Stabilize the quality of the product.
Automated molding process contributes to the operation stability.
Solves other problems such as:
Resin leakage, gate clogging, stringing, drooling, resin deterioration, gate balance etc.

 
Spear
The spear has a double heater structure consisting of a tip heater and a body heater.
The spear tip has been modified to directly heat itself. There are a large variety of spears available to accommodate different resin types and applications.

Overall structure of the Spear System
The spear system consists of a spear (embedded into the die), a manifold, and a controller for output (temperature) control.

Principle and Features of the Spear System
The resin at the sprue and runner is kept molten to maintain constant fluidity. Depending on the temperature of the gate land and a die, a very small amount of the resin solidifies along with the resin inside of the cavity. After the molded product is removed, the spear tip is heated up to instantly melt the solidified resin at the gate land just before the next injection.

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CVN Series

Features

1.  The diameter of gate can vary from Ø0.8~6.0.
2.  The tapper pin is applied in accordance with standard gate bush.
3.  The clearance between sleeve bush and valve pin is strictly managed to avoid resin flowing back.

End-Product

-          It is applied to various engineering plastic.

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SST Series

Features

1.  it is applied to various engineering plastic.
2.  The gate diameters are mainly Ø3 and Ø4, a normal or inveted cylinder unit and a center gate type or multi-point type with a manifold.
3.  The ˇ§ steady brace mechanismˇ¨ for the valve pin and air driving system prevents abrasion and breakage of the gate of the mold and the pin.
4. With using higher quality of the valve pin, it ensures good appearance of the gate mark.
5. With using the cylindering valve pin, and the low-pressure system to control the switches of the pin, abrasion and breakage of the gate of the mold and the pin are prevented.
6. No resin is shed by strictly quality control of the clearance between the valve pin and sleeve

End Product

Cover

Multi-point typed Product

         

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Type SVP - Standard valve

Features


- Suitable for a wide range of molding process using general resins to general engineering plastic.
- Addition of the Tip heater system (optional) makes this valve to be very effective for molding reinforced resins and crystallized resins (PET pre-form).

Uses

- Exterior parts (case, cover).
- Mechanical parts.
- Large molded parts which require multiple gates.
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SVY - Simple Flow valve

Features


- Prevents the resin from deterioration and contamination due to the split flow.
- Great color changeability.

Uses

- Exterior parts (case, cover).
- Multiple color product.
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Type SVPL - Single valve Features

SVP type with a center gate., Exclusively for a direct gate operation (single molding). By adding a manifold, it is suitable for multi molding also.

Uses

- Automobile parts.
- Bumper.
- Large molded parts.
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Type SV32 - Compact valve Features

- Available to minimum 32mm gate pitch.
- Steady Brace system is equipped on the valve pin.
- Suitable for general resins and general engineering plastic (POM, PC, ABS, PA etc.)

Uses

- Office automation equipment parts.
- DVC parts.
- Cellular phone parts.

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Spear Series

STT Series : Comprise tip heater and body heater.

Body is controlled by closed loop system.
ST Series : Comprise tip heater and body heater.

Body is controlled by open loop system.
S Series : Comprise tip heater and a common body heater.

The common body is controlled by close loop system.
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SPT Series

Features
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1. The newly-developed external heating topless probe is equipped with a tip heater.
2. It can be used for multiple cavity mold as well, taking advantage of its compactness of minimum 7mm pitch.
3. Unlike a conventional block method, gate lay out can be arranged very freely.

End Product

- It is best suited for molding high-function plastics for extremely-small mechanical parts.
It is best for continuous strip molding or small electronic parts molding.
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Type ESP - The internal tip heating spear has evolved to the
external heating system


Features

- Tip heater contributes to smooth gate opening with a continuous output control.
- External heating system controls the temperature of the body runner to provide the FIFO system that maintains minimum pileup to prevent the resins from deterioration and contamination.

Uses

- Mechanical parts.
- Connector parts.
- Super engineering plastic products.
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Type ESN - Central Flow type with external heating system

Features

- Minimum resin content and FIFO system prevents the resins from deterioration and contamination.
- Many tip selections according to the resin.
- Best suited for commodity resin.

Uses

- Commodity
- Caps
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Type D - Multi-purpose system Features

- Suitable for a wide range of the molding operations from small products to large products.
- Suitable for multiple cavity moldings.
- Suitable for general engineering plastic.

Uses

- Appliance parts.
- Various case parts.
- Engineering plastic functional parts.


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Type G - Minimum resin pile up Features

- External heating system contributes to a high injection rate.
- Perfect choice for multi colored products.
- Perfect choice for the highest quality of engineering plastic.

Uses

- Mechanism parts.
- Super engineering plastic parts.
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Type I - Suitable for Multiple Cavity molding Features

- Multiple tip style --- 8, 12 or 16 tips on one block body.
- Very small pitch (15mm) can be processed.
- Multiple cavity molding can be easily processed.

Uses

- Protector.
- Battery parts.
- Medical equipment parts.

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Type B - Smoother resin flow, suitable for large molding products

Features

- Smooth resin flow.
- Good heat stability.
- Insert it into the manifold to use.

Uses

- Mechanism parts.
- Super engineering plastic products parts.


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Manifold - Example of the bridged manifold

- Our Manifold achieves superb energy savings while striving for a lighter weight design without compromising the main function.
- Tubular heater is adapted as we value the temperature distribution.

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BOSSˇ]Bolt on Seiki Systemˇ^
Fast Delivery and Low price


Features

- We deliver on the same day that your cavity is ready so you can try it immediately.
- Pre-assembled and pre-wired at our factory. Rigorous quality checks on the system before delivery.
- Machined by a machining center ensures the greater accuracy of the system.
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Type of the Controller

Type TP : Controls STT and ST Spear series, body output 32V, and Tip 11V.
Type VP : Controls SH Spear, our SVP, SVY and SV32 Valve systems and other manufacture's
systems.
Type NP : Controls S series spears such as Type I.
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Controller SMC Series

Features
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1. The compact controller can be installed even on a molding machine.
2. It features a monochrome touch panel display which improves visibility and operation performance.
3. Its original control techniques prevent a possible temperature overshoot at start-up.

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Type S2000 - High performance digital controller, suitable to control Valve / Spear system and other
manufacture's system


- Easy to handle Windows like drop-down menu and a large display.
- Current closed Loop Control an Voltage Compensation Circuit contribute to stable molding regardless of the power condition.
- In compliance with CE Mark. Designed to resist disturbance noise while it doesn't produce radiated noise.




Wide Screen - Large Color Entry Unit for S2000 Controller

- 12.1-inch screen (800 x 600 dot) is capable to display the data on 8 manifold zones and 16 probes. (It's 6.25 times more data than a standard screen display.)
- 256-color TFT LCD presents realistic and graphical user interface.


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Type VMC ˇV General 200V / 240V Heater Controller

LCD touch panel - bigger and better screen - for easy handling
Compliance with EMS / EMI of EN Standard
- Resistant to disturbance noise
- Reduction of noise emission
Equipped with Soft Pulse Output Control*.
- Easy on heaters.
Stabilize molding production

 

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Type AHC
2 models of compact controller are available for small-cavity-number molding to control Valve system and Spear system.

Conventional HC type (for Valve) and AYC type (for Spear) were integrated into this new controller type.
- The two models of controller are available for controlling Seikiˇ¦s almost all Valves and Spear probes.
- Their common type of display improves operationality and service-parts compatibility.
Upgraded controller
- Quick-blow fuses equipped in all output circuit phases prevent in-circuit damage of semiconductors.
- 15bit Analog to Digital Converter is incorporated in the temperature-measuring circuit.
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Air Controller SMA4 series

Features
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1. It can control up to 4 valve gate circuits individually.
2. It is suitable for special molding such as two-color molding.
3. With touch panel screen manually opens and closes all valves simultaneously or automatically open/ close each valve individually. Opens the valves manually at the start up and checks the valve function easily.
4. Memory storage capacity for many molds.

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