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Hydraulic supply device and method for controlling hydraulic actuator device using the same

A hydraulic supply and actuation device technology, which is applied in the direction of fluid pressure actuation devices, servo motors, servo meter circuits, etc., can solve the problems of unusable, slow response of servo control, deterioration of performance and cost balance, etc., and achieve easy increase , highly responsive effect

Active Publication Date: 2013-02-13
YUKEN KOGYO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] As mentioned above, in a large-capacity hydraulic pump device, it is difficult to use the pump unit itself in the high-speed rotation area. In addition, as the size of the servo motor increases, it often cannot be used in the high-speed rotation area. Moreover, the servo control Responsiveness is also slow, and there are problems such as deterioration of the cost balance between performance and workload

Method used

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  • Hydraulic supply device and method for controlling hydraulic actuator device using the same
  • Hydraulic supply device and method for controlling hydraulic actuator device using the same
  • Hydraulic supply device and method for controlling hydraulic actuator device using the same

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Embodiment Construction

[0050] exist figure 1 Among them, the injection molding machine 20 is provided with, for example, a variable speed hydraulic motor 23 that drives and rotates the metering screw 24, an injection cylinder 27, a displacement cylinder 28, a mold clamping cylinder 35, and a discharge cylinder 38 and other hydraulic actuators. . The hydraulic supply device for supplying the hydraulic oil to these several hydraulic actuators is also the same in the present embodiment as figure 2 As shown, it consists of five hydraulic pump units 10 having the same rated performance. Each hydraulic pump device 10 is provided with a variable speed motor 11 and a pump unit 12 that is rotated by the motor 11 . The discharge ports 13 of the pump units 12 in each hydraulic pump device 10 communicate with one common hydraulic oil passage 21, respectively. The hydraulic actuators of the injection molding machine 20 on the load side are connected to the hydraulic oil passages through direction switching ...

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Abstract

Provided is a hydraulic supply device having a high response and compatible with various mother device sizes. The hydraulic supply device includes: a plurality of hydraulic pump devices (10) each having a variable-speed motor (11) and a pump unit (12); a work oil path (21) directly communicating with a discharge exit (13) of each pump unit so as to allow smooth passage of the work oil in both directions, combining the flows of the work oil discharged from the respective pump units (12) so as to introduce the oil to a load side or, in the reverse direction, dividing the work oil returned from the load side so as to introduce the oil to the respective pump unit (12); and control means (14, 15) for controlling the rpm of the motor (11) of each hydraulic pump device (10) in synchronization with one another.

Description

technical field [0001] The present invention relates to a hydraulic supply device for supplying hydraulic oil with a predetermined flow rate and / or pressure to various hydraulic actuating devices such as hydraulic cylinders and hydraulic motors, and also relates to a method of controlling driving of the hydraulic actuating device using the hydraulic supply device . Background technique [0002] In an injection molding machine, a press molding device, etc., the hydraulic actuator is controlled by guiding the hydraulic fluid from the hydraulic supply device to various hydraulic actuators, and by controlling the flow rate and / or pressure of the hydraulic fluid on the side of the hydraulic supply device. action speed and torque. For example, in an injection molding machine for plastic molding, an injection cylinder for injecting raw resin into the cavity of a metal mold, a hydraulic motor for rotary drive of a metering screw conveyor that feeds raw resin into the injection cyli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B11/02B29C33/20B29C45/82B29C45/84F15B11/00
CPCB29C45/82F15B2211/20576F15B2211/20515F15B2211/20546F15B2211/265F15B2211/327F15B11/17B29C33/20B29C45/84F15B11/00F15B11/02
Inventor 平出博一辔田雅博
Owner YUKEN KOGYO