DONGSHIN GB

Your advantage in the packaging industry. Dongshin GB full-electric guarantees high cycle times for the production of packaging articles of any shape, thickness and size.

The machine is the result of intense development work, the aim of which has been to offer solid and effective answers to the increasingly demanding needs of the packaging market. The guideline of the project was to concentrate in a single product high performance in terms of speed and precision, high quality and reliability of the components, careful engineering of the ergonomics of the solutions adopted and particular attention to the containment of energy consumption.

By the using of multiple electric motors and a mechanical structure specially designed for high cycle times, dongshin gb guarantees injection speeds up to 800 mm/s without particular structural stress.

CLOSING FORCE: from 800 to 5500 Kn
DRIVE SYSTEM: “Full Electric”

    foto iniziale

    Clamping unit

    * High stiffness 5point toggle

    • Realization of compact high stiffness mechanism through FEA (Finite Element Analysis)
    • Securing the safety of mold and minimization of defective rate of products with V-line structure.

    Build up frame design

    • Maintaining the stability of precise control of clamping and injection unit based on strong frame design
    • Reduction of vibration more than 50% by built up frame design
    • Extension of mold durability by precise balance of mold open/ close movement even together with heavy weight mold
    • Saving the mold maintenance cost by prevention of abrasion and damage of mold guide pin with improvement of squareness, balance, rectilineal movement
    Grafico Consumi
    Cattura 1
    Cattura 3

    Center press Platen design

    By adapting Center Press Design through FEA (Finite Element Analysis), it distributes internal stress and clamping force equally.

    • Minimization of mold deformation
    • Distribution of uniformed clamping force
    • Equalization of quality of molded products
    • Improvement of molding stability for multi cavity
    • Cost reduction of mold and parts maintenance
    • Realization of high precise repeatability and production of precise molded parts by minimization of deviation of mold surface pressure
    Clamping unit
    foto 01
    Sensor for clamping force

    Precise control of clamping force
    Real time monitoring of clamping force
    Remove the factors of tiebar damage
    Maintain stable clamping force
    Minimization of mold damage and reduction of maintenance cost
    Keep the stable molding condition by minimization of variation of clamping force according to the temperature changinge

    foto 02
    Integral design of crosshead support plate

    Minimization of tiebar deformation.
    Improvement of machine durability.

    foto 03
    Easy to us stack mold
    foto 04

    Possible to install the most biggest mold compare with other makers
    Possible to perform the mold open/ close with maintaining high degree of horizontality even with heavy weight mold

    foto 05
    Innovation of platen design

    Enough tiebar space which can be installed bigger mold comparing with other makers
    Diversification of direction of mold installation based on square platen design (Possible to install mold into the side entry direction)
    15% bigger platen and tiebar space compare with other maker’s same model

    foto 06
    Tiebar guideless

    High speed driving of clamping unit
    Tiebar design without bushing by supporting LM guide
    Maintain the high degree of horizontality with heavy weight mold
    Saving the maintenance cost of mold
    Minimization of electric power loss during the mold close/ open
    Realization of ECO friendly clean factory without using grease in the tiebar area
    50% reduction of variation of mold balance by realization of tiebar guideless
    Possible to reduce mold open/ close cycle time 15% compare with traditional design

    Injection unit
    foto 07
    IN-Line structure

    Precise control
    Maintain stable injection molding
    Realization of high stiffness injection unit
    Stable control of material charging
    Saving of electric power consumption by minimization of load during material charging

    foto 10
    Simplification of injection pivoting unit
    foto 08
    High speed injection (Option)

    Easy to increase injection speed by using of dual injection motors.

    foto 11
    Servo motor direct connection (option)

    Realization of high repeatability
    Optimized design
    Elimination of pulley belt backlash
    Optimization of injection and minimization of electric consumption

    foto 09
    LM guide

    Minimization of frictional force
    Realization of precise molding control using stable back pressure control by minimization of injection cushion variation
    Minimization of electric consumption
    Realization of precise molding and stable injection driving by minimization of sliding resistance
    Reduction of deviation between injection machine

    foto 12
    Lightening of driving pulley

    Realization of high repeatability and responsibility by optimized pulley design
    Optimizing of precise molding by minimization of inertia

    Clamping unit

    * High stiffness 5point toggle

    • Realization of compact high stiffness mechanism through FEA (Finite Element Analysis)
    • Securing the safety of mold and minimization of defective rate of products with V-line structure.
    foto iniziale

    Build up frame design

    • Maintaining the stability of precise control of clamping and injection unit based on strong frame design
    • Reduction of vibration more than 50% by built up frame design
    • Extension of mold durability by precise balance of mold open/ close movement even together with heavy weight mold
    • Saving the mold maintenance cost by prevention of abrasion and damage of mold guide pin with improvement of squareness, balance, rectilineal movement
    Grafico Consumi
    Cattura 1

    Center press Platen design

    By adapting Center Press Design through FEA (Finite Element Analysis), it distributes internal stress and clamping force equally.

    • Minimization of mold deformation
    • Distribution of uniformed clamping force
    • Equalization of quality of molded products
    • Improvement of molding stability for multi cavity
    • Cost reduction of mold and parts maintenance
    • Realization of high precise repeatability and production of precise molded parts by minimization of deviation of mold surface pressure
    Cattura 3
    Clamping unit
    foto 01
    Sensor for clamping force

    Precise control of clamping force
    Real time monitoring of clamping force
    Remove the factors of tiebar damage
    Maintain stable clamping force
    Minimization of mold damage and reduction of maintenance cost
    Keep the stable molding condition by minimization of variation of clamping force according to the temperature changinge

    foto 02
    Integral design of crosshead support plate

    Minimization of tiebar deformation.
    Improvement of machine durability.

    foto 03
    Easy to us stack mold
    foto 04

    Possible to install the most biggest mold compare with other makers
    Possible to perform the mold open/ close with maintaining high degree of horizontality even with heavy weight mold

    foto 05
    Innovation of platen design

    Enough tiebar space which can be installed bigger mold comparing with other makers
    Diversification of direction of mold installation based on square platen design (Possible to install mold into the side entry direction)
    15% bigger platen and tiebar space compare with other maker’s same model

    foto 06
    Tiebar guideless

    High speed driving of clamping unit
    Tiebar design without bushing by supporting LM guide
    Maintain the high degree of horizontality with heavy weight mold
    Saving the maintenance cost of mold
    Minimization of electric power loss during the mold close/ open
    Realization of ECO friendly clean factory without using grease in the tiebar area
    50% reduction of variation of mold balance by realization of tiebar guideless
    Possible to reduce mold open/ close cycle time 15% compare with traditional design

    Injection unit
    foto 07
    IN-Line structure

    Precise control
    Maintain stable injection molding
    Realization of high stiffness injection unit
    Stable control of material charging
    Saving of electric power consumption by minimization of load during material charging

    foto 10
    Simplification of injection pivoting unit
    foto 08
    High speed injection (Option)

    Easy to increase injection speed by using of dual injection motors.

    foto 11
    Servo motor direct connection (option)

    Realization of high repeatability
    Optimized design
    Elimination of pulley belt backlash
    Optimization of injection and minimization of electric consumption

    foto 09
    LM guide

    Minimization of frictional force
    Realization of precise molding control using stable back pressure control by minimization of injection cushion variation
    Minimization of electric consumption
    Realization of precise molding and stable injection driving by minimization of sliding resistance
    Reduction of deviation between injection machine

    foto 12
    Lightening of driving pulley

    Realization of high repeatability and responsibility by optimized pulley design
    Optimizing of precise molding by minimization of inertia

    Always Connected

    Ripress keeps up with the new technologies related to the INDUSTRY 4.0 protocol, offering a system able to store online any machines’ parameter and moulding data, allowing both access and editing through any PC or tablet device. On Google Play and App Store is available the RIPRESS APP that allows remote monitoring of all alarms and operating parameters of Your Ripress machine.

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