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Hydraulic unit and its pressure flux supply method

A technology of hydraulic unit and hydraulic machine, which is applied in the direction of fluid pressure actuators, mechanical equipment, servo motors, etc. It can solve the problems of pump pressure flow waste and pressure waste, and achieve the effects of energy saving, efficiency improvement and profit improvement

Inactive Publication Date: 2009-05-13
孙栓厚
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with this kind of injection molding machine is that a quantitative pump or a variable pump with a small rated working value can only provide pressure and flow to a horizontal plastic injection molding machine. The pressure and flow of the pump are different, and the pressure and flow output by the pump will be mostly wasted.
According to the action schedule of a single horizontal plastic injection injection molding machine, that is, Table 1, it can be seen that the maximum pressure required during the working process of the injection molding machine is 90kg / cm 2 , which means a rated working pressure of 100+ / cm 2 The pressure provided by the quantitative pump or variable pump, most of the time is doing useless work, most of the pressure is wasted

Method used

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  • Hydraulic unit and its pressure flux supply method
  • Hydraulic unit and its pressure flux supply method
  • Hydraulic unit and its pressure flux supply method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The horizontal plastic injection molding unit in this example is composed of two horizontal plastic injection molding machines, both of which share an oil supply device to provide pressure and flow for them. The oil supply device includes a motor 23, a coupling 33, a pump 22, One turns two shunt blocks 36 etc. Its oil circuit connection structure is as follows image 3 As shown, the motor 23 is connected to the pump 22 through the coupling 33; the high-pressure oil pipe 37 is connected to the pump 22 and the distribution block 36; the high-pressure oil pipe 28 is connected to the distribution block 36 and the main oil of the second horizontal plastic injection molding machine Road plate 25; high-pressure oil pipe 27, connected to the oil inlet of cooler 30 and the main oil circuit board 25 of the second horizontal plastic injection molding machine; high-pressure oil pipe 32, connected to the distribution block 36 and the main oil of the first horizontal plastic injectio...

Embodiment 2

[0038] The difference between this embodiment and Embodiment 1 is that the oil supply device includes a motor 23, a coupling 33, a pump 22, etc., and each injection molding machine is connected to the corresponding output end of the pump according to its required working pressure and flow. connect. Its oil circuit connection is as figure 2 As shown, the motor 23 is connected with the pump 22 through the coupling 33; the high-pressure oil pipe 28 is connected with the pump 22 and the main oil circuit board 25 of the second horizontal plastic injection molding machine; the high-pressure oil pipe 32 is connected with the pump 22 and the first The main oil circuit board 20 of the horizontal plastic injection molding machine; the high-pressure oil pipe 27 is connected to the main oil circuit board 25 of the second horizontal plastic injection injection molding machine and the oil inlet of the cooler 30; the high-pressure oil pipe 31 is connected to the main oil circuit board 20 an...

Embodiment 3

[0043] The difference between this embodiment and the second embodiment is that the quantitative pump 22 adopts a pump. Its oil circuit connection is as Figure 4 As shown, through the coupling 33, the motor 23 is connected with a set of double-connected quantitative pump 22; the double-connected pump 22 is connected with the diverter block 36 through high-pressure oil pipes 37 and 38, and the diverter block 36 is connected with the second horizontal plastic injection molding The main oil circuit board 25 of the machine communicates with the high-pressure oil pipe 28; the diverter block 36 communicates with the main oil circuit board 20 of the first horizontal plastic injection molding machine through the high-pressure oil pipe 32; The oil inlet of the oil circuit board 25 and the cooler 30; the high-pressure oil pipe 31 communicates with the oil inlet of the main oil circuit board 20 and the cooler 30; the high-pressure oil pipe 27 and 31 are connected in parallel and connect...

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PUM

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Abstract

The invention discloses a hydraulic machine set and a pressure flow supply method thereof. The machine set comprises an oil feeding device, and a plurality of hydraulic presses. The oil feeding device provides oil for two hydraulic presses or more than two hydraulic presses simultaneously, and hydraulic presses have working process, thereby flow pressure can be provided for multiple hydraulic presses. Compared to the prior art, every hydraulic press needs to be equipped with an oil feeding device. The hydraulic machine set and the pressure flow supply method thereof ensure that the hardware input cost is reduced greatly; during the operation, the rated power of electric motor of the oil feeding device is fully utilized; and the power factor of the electric motor is improved, power loss of the electric motor is reduced, and the efficiency is obviously improved.

Description

【Technical field】 [0001] The invention relates to a hydraulic unit. 【Background technique】 [0002] Hydraulic unit with hydraulic drive, such as vertical or horizontal plastic injection molding unit, hydraulic unit, die-casting machine (hydraulic) group hydraulic machine tool group, rubber machine (hydraulic) group, hydraulic unit, forging press (hydraulic pressure) on the market ) group, vulcanizing unit, stamping unit, etc., in the pressure and flow supply of hydraulic drive, some manufacturers strongly recommend installing frequency converters on ordinary quantitative pumps to achieve certain energy-saving control goals. According to the flow rate and pressure signal sent by the injection molding machine, the motor speed of the oil pump is automatically adjusted. When the working condition requires large flow and high pressure, the motor will run at full speed; when the working condition requires low flow and low pressure. , the motor will decelerate; when no flow pressu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B11/02F15B11/16
Inventor 孙栓厚
Owner 孙栓厚