阅读说明：本技术 一种注塑机模具中子保压泄压油路系统 (Injection molding machine mould neutron pressurize pressure release oil piping system ) 是由 杨俊辉 石则满 王旭 于 2021-08-11 设计创作，主要内容包括：本发明涉及一种注塑机模具中子保压泄压油路系统,包括模具中子油缸、电磁换向阀、集成油路板、叠加集成块和保压泄压阀,所述的中子油缸进出油口通过管路分别与集成油路板相连,所述电磁换向阀、保压泄压阀通过固定螺钉与集成油路板相连。集成油路板通过管路与整机液压系统进回油相连。本发明具有保压稳定可靠、拆装维修安全性高、成本低等特点。(The invention relates to a neutron pressure maintaining and relieving oil circuit system of an injection molding machine mold, which comprises a mold neutron oil cylinder, an electromagnetic directional valve, an integrated oil circuit board, an overlapping integrated block and a pressure maintaining and relieving valve, wherein an oil inlet and an oil outlet of the neutron oil cylinder are respectively connected with the integrated oil circuit board through pipelines, and the electromagnetic directional valve and the pressure maintaining and relieving valve are connected with the integrated oil circuit board through fixing screws. The integrated oil circuit board is connected with the oil inlet and return of the whole hydraulic system through a pipeline. The invention has the characteristics of stable and reliable pressure maintaining, high dismounting and maintaining safety, low cost and the like.)

1. The utility model provides an injection molding machine mould neutron pressurize pressure release oil piping system, includes mould neutron hydro-cylinder (1, 2), integrated oil circuit board (5), solenoid directional valve (3, 4), stack integrated package (6, 7) and pressurize relief valve (8, 9, 10, 11), its characterized in that: the business turn over hydraulic fluid port of mould neutron hydro-cylinder (1, 2) pass through the business turn over hydraulic fluid port of pipeline with integrated oil circuit board (5) and link to each other, pressurize relief valve (8, 9) are installed on stack integrated package (6), pressurize relief valve (10, 11) are installed on stack integrated package (7), solenoid directional valve (3, 4), stack integrated package (6, 7) are installed on integrated oil circuit board (5), integrated oil circuit board (5) oil inlet passes through the pipeline and links to each other with the system pressure hydraulic fluid port, the oil return port passes through the pipeline and links to each other with the system oil return.

2. The injection molding machine mold neutron pressure maintaining and pressure relieving oil circuit system of claim 1, characterized in that: the stacking integrated blocks (6 and 7) are independently installed and can be detached.

3. The injection molding machine mold neutron pressure maintaining and pressure relieving oil circuit system of claim 1, characterized in that: and the pressure maintaining pressure relief valves (8 and 9) and the pressure maintaining pressure relief valves (10 and 11) are respectively and independently arranged on the superposition integrated blocks (6 and 7).

Technical Field

The invention relates to the technical field of hydraulic control of injection molding machines, in particular to an oil circuit system for performing neutron pressure maintaining and pressure relief on an injection molding machine die.

Background

The injection molding machine industry has been developing rapidly for many years, and all kinds of moulds use more and more, and in order to make diversified product, most moulds all have the neutron hydro-cylinder, and in the product forming process, the neutron hydro-cylinder of mould need keep certain pressure in order to make qualified product. Today, the rapid development of the industry, people are going to develop towards a direction of being more intelligent and safer. Traditional injection molding machine mould neutron pressurize pressure release mode, or the pressurize is unstable, and the substandard product that the product appears leads to the fact extravagantly more, or needs the manual pressure release of workman, and is not intelligent enough, also unsafe, or through complicated principle, increases multiple accessory and realizes automatic pressure release, incremental cost. In view of the above working conditions, there is an urgent need for a solution that can provide a neutron pressure-maintaining pressure-relieving oil path control system in a mold that is reliable, intelligent, safe and low in cost.

Disclosure of Invention

The invention aims to solve the technical problem of providing a neutron pressure maintaining and relieving oil circuit system of an injection molding machine mold, which has the characteristics of stable neutron pressure maintaining of the mold, intelligent pressure relief, safe and reliable disassembly and assembly and maintenance, low comprehensive cost and the like.

The technical scheme adopted by the invention for solving the technical problems is as follows: the injection molding machine die neutron pressure maintaining and relieving oil circuit system comprises an injection molding machine die neutron oil cylinder, an integrated oil circuit board, an electromagnetic directional valve, an overlapping integrated block and a pressure maintaining and relieving valve. And an oil inlet and an oil outlet of the neutron oil cylinder of the die are connected with an oil inlet and an oil outlet corresponding to the integrated oil circuit board through pipelines. The pressure maintaining relief valve is installed on the superposition integrated block. The electromagnetic directional valve and the superposition integrated block are arranged on the integrated oil circuit board. The oil inlet of the integrated oil circuit board is connected with the system pressure oil port through a pipeline, and the oil return port is connected with the system oil return through a pipeline.

The stacking integrated block is independently installed and can be detached.

And the pressure maintaining pressure relief valve is independently arranged on the superposition integrated block.

Has the advantages that: the invention relates to an oil circuit system for performing neutron pressure maintaining and pressure relief on an injection molding machine mold, which has the following specific beneficial effects:

(1) the pressure maintaining and relieving valve with zero leakage rate provides a reliable and stable pressure maintaining function for the neutron oil cylinder of the injection molding machine mold, so that the product percent of pass is improved, the cost is reduced, and the waste is reduced;

(2) through the pressure maintaining and relieving valve capable of being controlled by low voltage, the high pressure of the neutron oil cylinder in the die is automatically removed during disassembly, assembly and maintenance, and the maintenance is convenient and safe.

(3) The pressure maintaining pressure relief valve is installed on the independent superposition integrated block, can be detached according to the pressure maintaining requirement in the die, does not need to be reserved, does not need to be added to reserve accessories, and is low in cost and high in universality.

Drawings

FIG. 1 is a structural view of a conventional neutron hydraulic circuit in a die;

FIG. 2 is a structural view of a hydraulic oil path for a conventional die with a neutron-added pressure maintaining function;

FIG. 3 is a structural view of a hydraulic oil path with a pressure maintaining function and an automatic pressure relief function in a conventional mold;

FIG. 4 is a structural view of a hydraulic oil path for performing pressure maintaining and pressure relief on a die according to the invention;

FIG. 1 shows: 1 mould neutron hydro-cylinder, 2 mould neutron hydro-cylinders, 3 electromagnetic directional valves, 4 electromagnetic directional valves, 5 integrated oil circuit boards.

FIG. 2 shows: the mould comprises a mould neutron oil cylinder 1, a mould neutron oil cylinder 2, an electromagnetic directional valve 3, an electromagnetic directional valve 4, an integrated oil circuit board 5, a hydraulic control one-way valve 6 and a hydraulic control one-way valve 7.

FIG. 3 shows: the mould comprises a mould neutron oil cylinder 1, a mould neutron oil cylinder 2, an electromagnetic directional valve 3, an electromagnetic directional valve 4, an integrated oil circuit board 5, a hydraulic control one-way valve 6, a hydraulic control one-way valve 7, a one-way valve 8, a one-way valve 9, a directional valve 10, a one-way valve 11 and a pressure maintaining and relieving valve 12.

FIG. 4 shows: the mould neutron hydro-cylinder of 1, 2 mould neutron hydro-cylinders, 3 electromagnetic directional valves, 4 electromagnetic directional valves, 5 integrated oil circuit boards, 6 stack integrated package, 7 stack integrated package, 8 pressurize relief valves, 9 pressurize relief valves, 10 pressurize relief valves, 11 pressurize relief valves.

Detailed Description

The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.

The embodiment of the invention relates to an oil circuit system for performing neutron pressure maintaining and pressure relief on an injection molding machine die, which is characterized by being compared with the conventional oil circuit system.

As shown in fig. 1, it is a conventional die neutron hydraulic oil circuit system. The device comprises neutron oil cylinders 1 and 2 of a mould, electromagnetic directional valves 3 and 4 and an integrated oil circuit board 5. The mould neutron oil cylinder is connected with the integrated oil circuit board 5 through a pipeline, the electromagnetic directional valves 3 and 4 are installed on the integrated oil circuit board 5, the moving back and the moving back of the mould neutron oil cylinder are realized through the electrification and the power failure of the electromagnets at the two ends of the electromagnetic directional valves, and when the electromagnets at the two ends of the electromagnetic directional valves are all powered off, the mould oil cylinder is in a pressure maintaining state. Because the electromagnetic directional valve is of a sliding valve structure, the leakage rate of the valve body is large, the pressure maintaining effect is poor, and defective products are easy to appear in products. And when the assembly, disassembly and maintenance are failed, the pressure of the neutron oil cylinder cannot be automatically disassembled, so that potential safety hazards are brought.

As shown in fig. 2, a hydraulic oil circuit system for adding a pressure maintaining function to a neutron of a conventional mold is provided. The device comprises neutron oil cylinders 1 and 2 of a mould, electromagnetic directional valves 3 and 4, an integrated oil circuit board 5 and hydraulic control one-way valves 6 and 7. The neutron oil cylinder of the mould is connected with the integrated oil circuit board 5 through a pipeline, the electromagnetic directional valves 3 and 4 are installed on the integrated oil circuit board 5, and the hydraulic control one-way valves 6 and 7 are respectively installed below the electromagnetic directional valves 3 and 4. The advancing and retreating of the neutron oil cylinder of the mold are realized through the electrification and the power loss of the electromagnets at the two ends of the electromagnetic directional valve, and when the electromagnets at the two ends of the electromagnetic directional valve are all in the power loss state, the oil cylinder of the mold is in a pressure maintaining state. The oil circuit system maintains pressure through the hydraulic control one-way valve, and compared with the hydraulic oil circuit system in the figure 1, the pressure maintaining performance is improved. However, the oil return of the system generally has a certain back pressure, when the oil return pipeline fluctuates, the hydraulic control one-way valve is opened by the pressure of the oil return pipeline, and the pressure maintaining effect is reduced. And when the assembly, disassembly and maintenance of the neutron oil cylinder are failed, the pressure of the neutron oil cylinder cannot be automatically disassembled, and the potential safety hazard is also brought.

As shown in fig. 3, a pressure maintaining function is added to the neutron of the conventional mold, and a hydraulic oil line system with an automatic pressure relief function is configured. The device comprises neutron oil cylinders 1 and 2 of a mould, electromagnetic directional valves 3 and 4, an integrated oil circuit board 5, hydraulic control one-way valves 6 and 7, one-way valves 8, 9, 10 and 11 and a pressure maintaining and relieving valve 12. The neutron oil cylinders of the mold are connected with the integrated oil circuit board 5 through pipelines, the electromagnetic directional valves 3 and 4 are installed on the integrated oil circuit board 5, the hydraulic control one-way valves 6 and 7 are installed below the electromagnetic directional valves 3 and 4 respectively, and each group of neutron oil cylinders are provided with two one-way valves to connect two cavities of the oil cylinders with the pressure release valves. The advancing and retreating of the neutron oil cylinder of the mold are realized through the electrification and the power loss of the electromagnets at the two ends of the electromagnetic directional valve, and when the electromagnets at the two ends of the electromagnetic directional valve are all in the power loss state, the oil cylinder of the mold is in a pressure maintaining state. When needing dismouting maintenance, the pressurize relief valve is got electric, unloads neutron pipeline internal pressure automatically. This oil piping system passes through the hydraulic control check valve pressurize, and is the same with the hydraulic pressure oil piping system pressurize principle of fig. 2, equally because the hydraulic control check valve can be opened by the backpressure of system's oil return, has reduced the pressurize effect, has additionally added a plurality of check valves, UNICOM each other between the check valve, if there is a check valve to appear revealing can lead to a plurality of neutron hydro-cylinders to appear the risk that pressure was revealed. And no pipe die has no neutron pressurize requirement, and check valve and pressurize relief valve must reserve in advance and install on integrated oil circuit board, leads to the cost increase.

As shown in fig. 4, the invention is a hydraulic oil line system for performing pressure maintaining and pressure relief on a die. The device comprises neutron oil cylinders 1 and 2 of a mould, electromagnetic directional valves 3 and 4, an integrated oil circuit board 5, superposition integrated blocks 6 and 7, and pressure maintaining and relieving valves 8, 9, 10 and 11. The neutron oil cylinder of the mould is connected with the integrated oil circuit board 5 through a pipeline, the electromagnetic directional valves 3 and 4 are installed on the integrated oil circuit board 5, and the pressure maintaining and pressure releasing valve is installed on the superposition integrated block and then installed below the electromagnetic directional valves. The advancing and retreating of the neutron oil cylinder in the mold are realized by matching the power-on and power-off of the electromagnets at the two ends of the electromagnetic directional valve with the on-off of the pressure maintaining relief valve, and when the electromagnets of the electromagnetic directional valve and the electromagnets of the pressure maintaining relief valve are powered off, the oil cylinder of the mold is in a pressure maintaining state. The oil circuit system maintains pressure through the pressure maintaining relief valve with zero leakage, the pressure maintaining pressure is independent and not communicated with each other, the pressure maintaining effect is not influenced by the pressure fluctuation of the oil return pipeline, and the pressure maintaining is reliable and stable. When needing dismouting maintenance, pressurize relief valve can automatic pressure release, the safety of guarantee personnel and equipment. And the stacking integrated blocks are independently designed, can be installed when the mold is used for neutron needs, and can be detached when the mold is not used. The original integrated oil circuit board does not need to be reserved and installed, the application is more reasonable and flexible, and the cost is lower.