CN211144936U - Oil pressure release control loop of injection molding machine - Google Patents
Oil pressure release control loop of injection molding machine Download PDFInfo
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- CN211144936U CN211144936U CN201921487164.6U CN201921487164U CN211144936U CN 211144936 U CN211144936 U CN 211144936U CN 201921487164 U CN201921487164 U CN 201921487164U CN 211144936 U CN211144936 U CN 211144936U
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Abstract
The utility model relates to an injection molding machine control oil pressure release loop, which comprises a control oil pipeline, an energy accumulator, a pressure oil source and an electromagnetic directional valve, wherein the pressure oil source and the energy accumulator are connected through a first pipeline; the electromagnetic directional valve is arranged on the first pipeline and used for controlling the on-off of an oil path between the pressure oil source and the energy accumulator; one end of the control oil pipeline is connected to the first section of pipeline between the electromagnetic directional valve and the energy accumulator, and the other end of the control oil pipeline is connected with a valve in a hydraulic circuit of the injection molding machine. The hydraulic circuit is simple, only one electromagnetic directional valve needs to be installed, the pipeline is convenient to install, and the cost is low; when the injection molding machine works, the control oil pipeline and the pressure oil source do not have any connection point, the leakage points are few, and the pressure maintaining is reliable.
Description
Technical Field
The utility model relates to an injection molding machine field, specifically say, relate to an injection molding machine control oil pressure release return circuit.
Background
Because the hydraulic circuit of the injection molding machine adopts a servo motor energy-saving hydraulic circuit, in order to ensure that the pressure of control oil required by a valve in the hydraulic circuit of the injection molding machine is stable, more and more injection molding machines are provided with energy accumulators on the control oil path. The accumulator hydraulic circuit has a good pressure maintaining function, but in the process of stopping, repairing and debugging the injection molding machine, if the pressure cannot be effectively relieved, the release of pressure oil can hurt operators.
The existing oil control pressure relief loop of the injection molding machine is generally similar to the oil control pressure relief loop shown in fig. 1, and comprises an energy accumulator F1, a one-way valve V1 and an electromagnetic directional valve V2, when the injection molding machine is stopped, maintained and debugged, an electromagnet D1 is electrified, the electromagnetic directional valve V2 is reversed, and a control oil way is connected with an oil tank T to realize pressure unloading. Because the electromagnetic directional valve V2 has inevitable leakage due to machining precision, the accumulator is easy to be filled with liquid frequently, waste is caused, and the pressure maintaining of the control oil is unstable.
Therefore, there is a need for an improved and optimized control oil relief circuit for an existing injection molding machine.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the above-mentioned not enough that exists among the prior art, and provide an injection molding machine control oil pressure release return circuit with low costs, the operational reliability is good.
The utility model provides a technical scheme that above-mentioned problem adopted is: the utility model provides an injection molding machine control oil pressure release return circuit, includes control oil pipeline, energy storage ware and pressure oil source, its characterized in that: the pressure oil source is connected with the energy accumulator through a first pipeline; the electromagnetic directional valve is arranged on the first pipeline and used for controlling the on-off of an oil path between the pressure oil source and the energy accumulator; one end of the control oil pipeline is connected to the first section of pipeline between the electromagnetic directional valve and the energy accumulator, and the other end of the control oil pipeline is connected with a valve in a hydraulic circuit of the injection molding machine.
Preferably, the electromagnetic directional valve is a cartridge type reversing valve and is a two-position two-way valve, wherein one position is a two-way flow position, and the other position is a one-way flow position.
Preferably, when the electromagnetic directional valve is not electrified, the one-way circulation position is in the working position, at the moment, oil in the pressure oil source can circulate to the energy accumulator, and otherwise, the oil is not electrified; when the electromagnetic directional valve is electrified, the bidirectional circulation position is at the working position, and oil in the pressure oil source is communicated with oil in the energy accumulator.
When the injection molding machine is used specifically, a servo motor energy-saving hydraulic circuit is adopted by the injection molding machine, the pressure of a pressure oil source acts along with the load, the pressure is changed in real time, when the injection molding machine works, the pressure of the pressure oil source is increased, the pressure oil source provides oil to charge and store energy for an energy accumulator through an electromagnetic directional valve, when the pressure of the pressure oil source is reduced (an oil pump is actively reversed), because a working position of the electromagnetic directional valve at the moment is in a one-way circulation position, the oil in the energy accumulator cannot circulate to the pressure oil source, and therefore a good pressure maintaining function is; when the injection molding machine is stopped, maintained and debugged, the pressure oil source has no pressure, the control oil pipeline still maintains the pressure due to the fact that the electromagnetic directional valve does not circulate reversely, pressure release is needed, at the moment, the electromagnet in the electromagnetic directional valve is electrified, the electromagnetic directional valve is switched to a bidirectional circulation position, pressure oil filled in the energy accumulator reaches the pressure oil source through the electromagnetic directional valve, the pressure of the pressure oil source is reduced (the oil pump is passively reversed), and pressure release is achieved.
Compared with the prior art, the utility model, have following advantage and effect: the hydraulic circuit is simple, only one electromagnetic directional valve needs to be installed, the pipeline installation is convenient, and the cost is low; when the injection molding machine works, the control oil pipeline and the pressure oil source do not have any connection point, the leakage points are few, and the pressure maintaining is reliable.
Drawings
In order to illustrate the embodiments of the present invention or the solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic diagram of a prior art control oil relief circuit.
Fig. 2 is a schematic structural diagram of an embodiment of the present invention, illustrating a control oil pressure relief loop.
Description of reference numerals: the device comprises an accumulator F1, a pressure oil source P, an electromagnetic directional valve V3, a control oil pipeline 1, a first pipeline 2 and an electromagnet D1.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.
Examples are given.
Referring to fig. 2, the present embodiment discloses an injection molding machine control oil pressure relief circuit, which includes a control oil pipeline 1, an accumulator F1, a pressure oil source P, and an electromagnetic directional valve V3. The pressure oil source P and the accumulator F1 are connected by a first line 2. And the electromagnetic direction valve V3 is arranged on the first pipeline 2 and is used for controlling the on-off of an oil path between the pressure oil source P and the accumulator F1. One end of the control oil pipeline 1 is connected to a first pipeline 2 between the electromagnetic directional valve V3 and the accumulator F1, and the other end of the control oil pipeline 1 is connected with a valve in a hydraulic circuit of the injection molding machine.
The electromagnetic directional valve V3 is a plug-in type reversing valve, and is a two-position two-way valve, wherein one position is a two-way flow position, and the other position is a one-way flow position. When the electromagnet D1 in the electromagnetic directional valve V3 is not electrified, the one-way circulation position is in the working position, namely the electromagnetic directional valve V3 plays the role of a one-way valve, at the moment, the oil in the pressure oil source P can circulate to the energy accumulator F1, and otherwise, the oil is not communicated; when the electromagnet D1 in the electromagnetic directional valve V3 is energized, the two-way flow position is in the working position, and the oil in the pressure oil source P is communicated with the oil in the accumulator F1.
When the injection molding machine is used specifically, a servo motor energy-saving hydraulic circuit is adopted by the injection molding machine, the pressure of a pressure oil source P is changed in real time along with the action of a load, when the injection molding machine works, the pressure of the pressure oil source P is increased, oil provided by the pressure oil source P is filled and stored in an energy accumulator F1 through an electromagnetic directional valve V3, an oil pump is actively reversed when the pressure of the pressure oil source P is reduced, and the oil in the energy accumulator F1 cannot flow to the pressure oil source P due to the fact that a working position of the electromagnetic directional valve V3 at the moment, so that a good pressure maintaining function is achieved for control oil; when the injection molding machine is stopped, maintained and debugged, the pressure oil source P has no pressure, the control oil pipeline still keeps pressure due to the fact that the electromagnetic directional valve V3 does not circulate reversely, pressure release is needed, the electromagnet D1 in the electromagnetic directional valve V3 is electrified, the electromagnetic directional valve V3 is switched to a bidirectional circulation position, pressure oil filled in the energy accumulator reaches the pressure oil source P through the electromagnetic directional valve V3, the pressure oil source P pressure reduction oil pump rotates reversely passively, and pressure release is achieved.
In addition, it should be noted that the specific embodiments described in the present specification may be different in the components, the shapes of the components, the names of the components, and the like, and the above description is only an example of the structure of the present invention. All the equivalent changes or simple changes made according to the structure, characteristics and principle of the patent idea of the utility model are included in the protection scope of the patent of the utility model. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (3)
1. The utility model provides an injection molding machine control oil pressure release return circuit, includes control oil pipeline (1), energy storage ware (F1) and pressure oil source (P), its characterized in that: the system also comprises an electromagnetic direction valve (V3), and the pressure oil source (P) and the accumulator (F1) are connected through a first pipeline (2); the electromagnetic directional valve (V3) is arranged on the first pipeline (2) and is used for controlling the on-off of an oil path between the pressure oil source (P) and the energy accumulator (F1); one end of the control oil pipeline (1) is connected to a first pipeline (2) between the electromagnetic directional valve (V3) and the energy accumulator (F1), and the other end of the control oil pipeline (1) is connected with a valve in a hydraulic circuit of the injection molding machine.
2. The injection molding machine oil control pressure relief circuit of claim 1, wherein: the electromagnetic directional valve (V3) is a plug-in type reversing valve and is a two-position two-way valve, wherein one position is a two-way flow position, and the other position is a one-way flow position.
3. The injection molding machine oil control pressure relief circuit of claim 2, wherein: when the electromagnetic directional valve (V3) is not electrified, the one-way circulation position is at the working position, at the moment, the oil in the pressure oil source (P) can circulate to the energy accumulator (F1), otherwise, the electromagnetic directional valve is not electrified; when the electromagnetic directional valve (V3) is electrified, the bidirectional circulation position is in the working position, and the oil in the pressure oil source (P) is communicated with the oil in the accumulator (F1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921487164.6U CN211144936U (en) | 2019-09-09 | 2019-09-09 | Oil pressure release control loop of injection molding machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921487164.6U CN211144936U (en) | 2019-09-09 | 2019-09-09 | Oil pressure release control loop of injection molding machine |
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| CN211144936U true CN211144936U (en) | 2020-07-31 |
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| CN201921487164.6U Active CN211144936U (en) | 2019-09-09 | 2019-09-09 | Oil pressure release control loop of injection molding machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112344015A (en) * | 2020-10-26 | 2021-02-09 | 中国第一汽车股份有限公司 | Active pressure relief control method of transmission energy accumulator, vehicle and storage medium |
| CN113565820A (en) * | 2021-08-11 | 2021-10-29 | 浙江旭昌昇装备科技有限公司 | Injection molding machine mould neutron pressurize pressure release oil piping system |
-
2019
- 2019-09-09 CN CN201921487164.6U patent/CN211144936U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112344015A (en) * | 2020-10-26 | 2021-02-09 | 中国第一汽车股份有限公司 | Active pressure relief control method of transmission energy accumulator, vehicle and storage medium |
| CN112344015B (en) * | 2020-10-26 | 2022-02-22 | 中国第一汽车股份有限公司 | Active pressure relief control method of transmission energy accumulator, vehicle and storage medium |
| CN113565820A (en) * | 2021-08-11 | 2021-10-29 | 浙江旭昌昇装备科技有限公司 | Injection molding machine mould neutron pressurize pressure release oil piping system |
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