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Injection moulding machine and protection method for the injection moulding machine

An injection molding machine and electric motor technology, which is applied in the direction of motor/generator/inverter limiter, motor generator control, electrical components, etc., can solve the problems of inability to ensure the configuration space and manufacturing cost of electric injection molding machines.

Inactive Publication Date: 2003-04-30
SUMITOMO HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] On the other hand, as in the above-mentioned conventional electric injection molding machine, in order to protect the dynamic braking device 5, a thermal relay 7, a current detector or a voltage detector and other protection dedicated equipment are installed, and the electric injection molding machine must be changed. into a large machine
In this way, it may not be possible to ensure the arrangement space and manufacturing cost of the electric injection molding machine

Method used

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  • Injection moulding machine and protection method for the injection moulding machine
  • Injection moulding machine and protection method for the injection moulding machine
  • Injection moulding machine and protection method for the injection moulding machine

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Embodiment Construction

[0028] Hereinafter, embodiments of the present invention will be described with reference to the drawings. The following is an explanation by taking an electric injection molding machine as an embodiment of the present invention.

[0029] Fig. 2 is a side view showing a schematic configuration of an electric injection molding machine according to a first embodiment of the present invention. As shown in FIG. 2 , the electric injection molding machine 10 is composed of an injection device 20 , a mold clamping device 50 , and the like.

[0030] The injection device 20 has a heating cylinder (silinda) 21 , and a funnel 22 is arranged on the heating cylinder 21 . Furthermore, a screw (screw) 23 capable of advancing and retreating and rotating freely is provided in the heating cylinder 21 . The rear end of the screw rod 23 is rotatably supported by a support member 24 . On the supporting member 24, a metering motor 25 such as a servo motor as a driving part is attached, and the r...

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Abstract

The present invention provides an injection molding machine of a simple structure which can realize sure protection of a dynamic brake device, combined with a motor mounted as an actuator from overloaded state, and to provide a method of protecting the injection molding machine. This injection molding machine includes a motor, a dynamic brake device, which is combined with the motor and consumes the regenerated power of the motor as the load, and a controller which outputs a drive output signal to the dynamic brake device and controls the dynamic brake device, consuming the regenerated power of the motor; this controller estimates the load applied to the dynamic brake device, based on the drive output signal outputted to the dynamic brake device, and determines whether the dynamic brake device is in overload state, based on the load estimated.

Description

technical field [0001] The present invention relates to an injection molding machine and a protection method for the injection molding machine, in particular to an electric injection molding machine or a hybrid injection molding machine and a method for protecting the injection molding machine. The electric injection molding machine is provided with a dynamic brake, and the power The brake is incorporated in an electric motor used as a driving device (acchuter) of an injection device, a mold clamping device, or the like. Background technique [0002] An electric motor (motor) is generally used as a driving source in an electric injection molding machine. In addition, as an injection molding machine that integrates the advantages of both a hydraulic injection molding machine and an electric injection molding machine, although it is called a hybrid injection molding machine, this hybrid injection molding machine also uses a motor. [0003] That is, in the above-mentioned inje...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/76H02P3/18
CPCH02P3/18B29C45/7666B29C2045/1792B29C2945/76033B29C2045/7673B29C2945/76525Y02P70/10
Inventor 水野博之
Owner SUMITOMO HEAVY IND LTD