CN-224224381-U - Hydraulic turntable system and injection molding machine

CN224224381UCN 224224381 UCN224224381 UCN 224224381UCN-224224381-U

Abstract

The utility model discloses a hydraulic turntable system and an injection molding machine. The system comprises a first end of a direction valve, a second end of the direction valve, an oil supply module, a turntable position acquisition module, a control module and a proportional valve, wherein the first end of the direction valve is connected with a first connecting end of a turntable driving module, the second end of the direction valve is connected with a second connecting end of the turntable driving module, the third end of the direction valve is connected with the oil supply module, the fourth end of the direction valve is connected with an oil return pipeline, the turntable position acquisition module is used for detecting position information of a turntable in real time and converting the position information of the turntable into a turntable position signal to be transmitted to the control module, the control module is used for receiving a set turntable rotation signal, controlling the oil supply module and the direction valve to open to drive the turntable to rotate, and simultaneously receiving the turntable position signal, and controlling the opening of the proportional valve and the oil supply quantity and the oil supply pressure of the oil supply module to drive the turntable to be steadily decelerated through the turntable driving module until the turntable stops. The utility model reduces the impact when the turntable stops, reduces the failure rate of the hydraulic turntable system and prolongs the service life of the hydraulic turntable system.

Inventors

HOU YUAN
ZHANG JUNHUI
HOU YONGPING
QI MINGCHAO
ZHANG TAO

Assignees

伊之密精密机械（苏州）有限公司

Dates

Publication Date: 20260512
Application Date: 20250429

Claims (10)

1. A hydraulic turntable system, comprising: The device comprises a turntable, a turntable driving module, a directional valve, a proportional valve, an oil supply module, a turntable position acquisition module and a control module; The first end of the direction valve is connected with the first connecting end of the turntable driving module, the second end of the direction valve is connected with the second connecting end of the turntable driving module, the third end of the direction valve is connected with the oil supply module, the fourth end of the direction valve is connected with an oil return pipeline, and the proportional valve is arranged on the oil return pipeline; The rotary table position acquisition module is electrically connected with the control module, and is used for detecting the position information of the rotary table in real time, converting the position information of the rotary table into rotary table position signals and transmitting the rotary table position signals to the control module, wherein the control module is electrically connected with the direction valve, the proportional valve and the oil supply module, and is used for receiving set rotary table rotation signals, controlling the oil supply module and the direction valve to open so as to drive the rotary table to rotate, and simultaneously receiving the rotary table position signals, and controlling the opening degree of the proportional valve and the oil supply quantity and the oil supply pressure of the oil supply module so as to drive the rotary table to be stably decelerated through the rotary table driving module until the rotary table is stopped, and the rotary table rotation signals comprise rotary table rotation direction signals and rotary table rotation position signals.
2. The hydraulic turntable system of claim 1, further comprising: a first pressure sensor; The first pressure sensor is used for acquiring the return oil pressure at the outlet position of the fourth end of the direction valve in real time, converting the return oil pressure into a return oil pressure signal and transmitting the return oil pressure signal to the control module; The control module is used for: Receiving the rotary position signal of the turntable, and outputting a first brake position signal and a target position signal; when the turntable position signal is equal to the first brake position signal, controlling to reduce the opening of the proportional valve; And when the oil return pressure signal is greater than or equal to a preset oil return pressure signal, controlling the proportional valve to keep the current opening degree, and controlling the oil supply module to gradually reduce the oil supply quantity and the oil supply pressure according to a first oil supply threshold value until the turntable reaches a target position.
3. The hydraulic turntable system of claim 2, wherein, The control module is further configured to: And when the turntable position signal is equal to the target position signal, controlling the oil supply module to stop working.
4. The hydraulic turntable system of claim 1, further comprising: an oil return electromagnetic valve; The first end of the oil return electromagnetic valve is connected with the first end of the direction valve through a first oil return branch, the first end of the oil return electromagnetic valve is connected with the second end of the direction valve through a second oil return branch, the second end of the oil return electromagnetic valve is connected with the oil return pipeline through a third oil return branch, and the connecting end of the third oil return branch and the oil return pipeline is arranged on one side, far away from the direction valve, of the proportional valve; And the control module is used for controlling the directional valve to be closed and controlling the oil return electromagnetic valve to be opened when the position signal of the turntable is equal to the target position signal.
5. The hydraulic turntable system of claim 1, wherein, The turntable driving module comprises two hydraulic motors; The two hydraulic motors are oppositely arranged on two sides of the turntable, the first ends of the directional valves are connected with the first connecting ends of the two hydraulic motors, and the second ends of the directional valves are connected with the second connecting ends of the two hydraulic motors.
6. The hydraulic turntable system of claim 1, further comprising: The fourth end of the direction valve is connected with an oil inlet of the oil tank through the oil return pipeline; the oil supply module includes: The high-pressure oil pump is arranged between an oil outlet of the oil tank and a third end of the direction valve, a first end of the servo driving module is electrically connected with the high-pressure oil pump, and a second end of the servo driving module is electrically connected with the control module; The control module is used for controlling the directional valve to open according to the rotating signal of the turntable, controlling the servo driving module to drive the high-pressure oil pump to operate, and controlling the directional valve to open so as to drive the turntable to rotate; And receiving the position signal of the rotary table, and controlling to reduce the opening degree of the proportional valve and the output pressure of the servo driving module so as to drive the rotary table to smoothly slow down through the rotary table driving module until the rotary table stops.
7. The hydraulic turntable system of claim 6, wherein, The oil supply module further includes: A second pressure sensor; the second pressure sensor is electrically connected with the servo driving module and is used for detecting the output pressure of the pump port of the high-pressure oil pump in real time and converting the output pressure of the pump port into an output pressure signal of the pump port to be transmitted to the servo driving module, and the servo driving module is used for controlling the output pressure of the pump port of the high-pressure oil pump to be stabilized to the preset output pressure until the turntable stops rotating when the output pressure signal of the pump port is equal to the preset output pressure signal.
8. The hydraulic turntable system of claim 6, further comprising: an oil absorption filter; The oil suction filter is arranged between the high-pressure oil pump and an oil outlet of the oil tank.
9. The hydraulic turntable system of claim 1, wherein, The turntable position acquisition module includes a position encoder.
10. An injection molding machine comprising a machine body and a hydraulic turntable system according to any one of claims 1 to 9.

Description

Hydraulic turntable system and injection molding machine Technical Field The utility model relates to the technical field of hydraulic turntables, in particular to a hydraulic turnplate system and an injection molding machine. Background With the rapid development of economic construction, there is an increasing market demand for injection molding machines with hydraulic turntable systems. In the prior art, a servo motor is generally adopted to directly drive the turntable to rotate, and in the process of controlling the turntable to stop by the servo motor, the turntable is relatively large in inertia, so that relatively large turntable impact is generated, and the hydraulic turntable system is easily damaged. Disclosure of utility model The utility model provides a hydraulic turntable system and an injection molding machine, which are used for reducing impact when a turntable stops, reducing the failure rate of the hydraulic turntable system and prolonging the service life of the hydraulic turntable system. According to an aspect of the present utility model, there is provided a hydraulic turntable system including: The device comprises a turntable, a turntable driving module, a directional valve, a proportional valve, an oil supply module, a turntable position acquisition module and a control module; The first end of the directional valve is connected with the first connecting end of the turntable driving module, the second end of the directional valve is connected with the second connecting end of the turntable driving module, the third end of the directional valve is connected with the oil supply module, the fourth end of the directional valve is connected with the oil return pipeline, and the proportional valve is arranged on the oil return pipeline; The rotary table position acquisition module is electrically connected with the control module, and is used for detecting the position information of the rotary table in real time, converting the position information of the rotary table into rotary table position signals and transmitting the rotary table position signals to the control module, wherein the control module is electrically connected with the direction valve, the proportional valve and the oil supply module, and is used for receiving set rotary table rotation signals, controlling the oil supply module and the direction valve to open to drive the rotary table to rotate, simultaneously receiving the rotary table position signals, controlling the opening of the proportional valve and the oil supply quantity and the oil supply pressure of the oil supply module, and driving the rotary table to stably decelerate until the rotary table is stopped through the rotary table driving module, and the rotary table rotation signals comprise rotary table rotation direction signals and rotary table rotation position signals. Further, the hydraulic turntable system further includes: a first pressure sensor; The first pressure sensor is used for acquiring the return oil pressure at the outlet position of the fourth end of the direction valve in real time, converting the return oil pressure into a return oil pressure signal and transmitting the return oil pressure signal to the control module; the control module is used for: Receiving a rotary position signal of a turntable, and outputting a first brake position signal and a target position signal; When the rotary table position signal is equal to the first brake position signal, controlling to reduce the opening of the proportional valve; And when the oil return pressure signal is greater than or equal to the preset oil return pressure signal, controlling the proportional valve to keep the current opening degree, and controlling the oil supply module to gradually reduce the oil supply quantity and the oil supply pressure according to the first oil supply threshold value until the turntable reaches the target position. Further, the control module is further configured to: And when the turntable position signal is equal to the target position signal, controlling the oil supply module to stop working. Further, the hydraulic turntable system further includes: an oil return electromagnetic valve; The first end of the oil return electromagnetic valve is connected with the first end of the directional valve through a first oil return branch, the first end of the oil return electromagnetic valve is connected with the second end of the directional valve through a second oil return branch, the second end of the oil return electromagnetic valve is connected with the oil return pipeline through a third oil return branch, and the connecting end of the third oil return branch and the oil return pipeline is arranged on one side, far away from the directional valve, of the proportional valve; And the control module is used for controlling the directional valve to be closed and controlling the oil return electromagnetic valve to be opened when the position signal of the turntabl