Multi-group parallel oil circuit of neutron oil cylinder for injection molding machine

Abstract

This invention proposes a multi-parallel neutron cylinder hydraulic circuit for injection molding machines, including a neutron valve plate, an oil tank, neutron cylinder one, and neutron cylinder two. The neutron valve plate is equipped with an inlet pipe, a return pipe, and an unloading pipe. One end of the inlet pipe is an inlet port, and one end of the return pipe is a return port. Operation via the control panel sends a signal to the two-way solenoid directional valve, causing it to open. At this time, the hydraulic oil in the left and right chambers of neutron cylinder one and neutron cylinder two flows through parallel check valves A, B, A, and B, and is depressurized back to the oil tank via the T port of the two-way solenoid directional valve. If there are more cylinders, they can be connected in parallel and stacked according to the number of cylinders. Only one two-way solenoid directional valve is needed to achieve the simultaneous unloading effect of multiple neutron cylinders, effectively improving the depressurization efficiency of the neutron cylinders and reducing operating costs.

Description

Technical Field

[0001] This utility model relates to the field of injection molding machine technology, specifically to an oil circuit for multiple parallel neutron cylinders used in injection molding machines. Background Technology

[0002] Injection molding machines, also known as injection molding machines or injection molding machines, are the main molding equipment used to produce various shapes of plastic products from thermoplastic or thermosetting plastics using plastic molds. They are classified as vertical, horizontal, and all-electric. Injection molding machines heat the plastic, apply high pressure to the molten plastic, and inject it to fill the mold cavity.

[0003] Currently, neutron cylinders in injection molding machines are controlled by hydraulic circuits to complete their actions. The pressure relief function and method of the neutron cylinder are important parts of the hydraulic circuit design. However, existing pressure relief circuits for neutron cylinders have low pressure relief efficiency, complex structure, and high cost. Utility Model Content

[0004] This invention proposes a multi-group parallel neutron cylinder oil circuit for injection molding machines, which solves the problems of low pressure relief efficiency, complex structure, and high cost of neutron cylinder pressure relief oil circuits in related technologies.

[0005] The technical solution of this utility model is as follows: a multi-group parallel neutron cylinder oil circuit for an injection molding machine, including a neutron valve plate, an oil tank, a neutron cylinder one and a neutron cylinder two, wherein the neutron valve plate is provided with an oil inlet pipe, an oil return pipe and an unloading pipe, one end of the oil inlet pipe is an oil inlet and one end of the oil return pipe is an oil return outlet;

[0006] The neutron valve plate is equipped with two or more Y-type three-position four-way directional valves (Y-type three-position four-way directional valve 1 and Y-type three-position four-way directional valve 2) for controlling the operation of neutron cylinder 1 and neutron cylinder 2, two or more stacked bidirectional check valves (Y-type three-position four-way directional valve 1 and Y-type three-position four-way directional valve 2) for maintaining the pressure of neutron cylinder 1 and neutron cylinder 2 respectively, check valve 1A and check valve 1B for controlling the rapid pressure relief of neutron cylinder 1, check valve 2A and check valve 2B for controlling the rapid pressure relief of neutron cylinder 2, and a two-way solenoid directional valve for the rapid unloading of neutron cylinder 1 and neutron cylinder 2.

[0007] Preferably, the oil inlet is connected to the P port of Y-type three-position four-way directional valve one and Y-type three-position four-way directional valve two via pipelines, and the oil return port is connected to the T port of Y-type three-position four-way directional valve one, Y-type three-position four-way directional valve two and two-way solenoid directional valve via pipelines, and is connected to the oil tank.

[0008] Preferably, the A and B ports of the Y-type three-position four-way reversing valve are connected to the stacked bidirectional one-way valve through pipes, and the stacked bidirectional one-way valve is connected to the left and right chambers of the neutron cylinder through pipes respectively.

[0009] Preferably, the A and B ports of the Y-type three-position four-way reversing valve are connected to the stacked bidirectional one-way valve via pipelines, and the stacked bidirectional one-way valve is connected to the left and right chambers of the neutron cylinder via pipelines respectively.

[0010] Preferably, check valve A and check valve B are connected in parallel on the pipeline between the stacked bidirectional check valve A and the neutron cylinder A, and check valve B is connected in parallel on the pipeline between the stacked bidirectional check valve B and the neutron cylinder B.

[0011] Preferably, the T ports of check valve A, check valve B, check valve A, and check valve B are connected to the oil inlet P of the two-way solenoid directional valve via pipelines.

[0012] The working principle and beneficial effects of this utility model are as follows:

[0013] When neutron cylinders one and two are working, the two-way solenoid directional valve is closed because it does not receive a signal from the control panel. At this time, the hydraulic oil in the left and right chambers of neutron cylinders one and two cannot be depressurized and flow back to the oil tank. When neutron cylinders one and two need to be depressurized and unloaded, this can be done through the external control panel, sending a signal to the two-way solenoid directional valve, causing it to open. At this time, the hydraulic oil in the left and right chambers of neutron cylinders one and two flows through... The system connects check valves A, B, A, and B, and then releases pressure back to the oil tank via the T port of a two-way solenoid directional valve. This achieves simultaneous pressure relief in the left and right chambers of neutron cylinders 1 and 2. If there are more cylinders, they can be connected in parallel and superimposed according to the number of cylinders. During pressure relief, only one two-way solenoid directional valve is needed to achieve the effect of simultaneous unloading of multiple neutron cylinders, effectively improving the pressure relief efficiency of neutron cylinders. The structure is simple and helps to reduce operating costs. Attached Figure Description

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0015] Figure 1 This is a schematic diagram of the overall planar structure of this utility model.

[0016] In the diagram: 1. Neutron valve plate; 2. Oil inlet; 3. Oil return port; 4. Neutron cylinder one; 5. Neutron cylinder two; 6. Y-type three-position four-way directional valve one; 7. Y-type three-position four-way directional valve two; 8. Stacked bidirectional check valve one; 9. Stacked bidirectional check valve two; 10. Check valve one A; 11. Check valve one B; 12. Check valve two A; 13. Check valve two B; 14. Two-way solenoid directional valve. Detailed Implementation

[0017] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0018] Please see Figure 1 The present invention provides an oil circuit for multiple parallel neutron cylinders for injection molding machines, including a neutron valve plate 1, an oil tank, a first neutron cylinder 4 and a second neutron cylinder 5. The neutron valve plate 1 is provided with an oil inlet pipe, an oil return pipe and an unloading pipe. One end of the oil inlet pipe is an oil inlet 2 and one end of the oil return pipe is an oil return outlet 3.

[0019] The neutron valve plate 1 is equipped with two or more Y-type three-position four-way directional valves 16 and 27 that control the operation of neutron cylinder 1 4 and neutron cylinder 2 5, two or more stacked bidirectional check valves 18 and 29 that maintain the pressure of neutron cylinder 1 4 and neutron cylinder 2 5 respectively, check valves 1A10 and 1B11 that control the rapid pressure relief of neutron cylinder 1 4, check valves 2A12 and 2B13 that control the rapid pressure relief of neutron cylinder 2 5, and a two-way solenoid directional valve 14 for the rapid unloading of neutron cylinder 1 4 and neutron cylinder 2 5.

[0020] Furthermore, the oil inlet 2 is connected to the P port of Y-type three-position four-way directional valve 6 and Y-type three-position four-way directional valve 7 respectively through pipelines, and the oil return port 3 is connected to the T port of Y-type three-position four-way directional valve 6, Y-type three-position four-way directional valve 7 and two-way solenoid directional valve 14 respectively through pipelines, and is connected to the oil tank.

[0021] Furthermore, the A1 and B1 ports of the Y-type three-position four-way directional valve-6 are connected to the stacked bidirectional check valve-8 via pipes, and the stacked bidirectional check valve-8 is connected to the left and right chambers of the neutron cylinder-4 via pipes respectively.

[0022] Furthermore, the A2 and B2 ports of the Y-type three-position four-way directional valve 27 are connected to the stacked bidirectional one-way valve 29 via pipelines, and the stacked bidirectional one-way valve 29 is connected to the left and right chambers of the neutron cylinder 25 via pipelines respectively.

[0023] Furthermore, check valve A10 and check valve B11 are connected in parallel on the pipeline between stacked bidirectional check valve 8 and neutron cylinder 4, respectively, and check valve A12 and check valve B13 are connected in parallel on the pipeline between stacked bidirectional check valve 9 and neutron cylinder 5, respectively.

[0024] Furthermore, the T1 port of check valve A10, the T2 port of check valve B11, the T3 port of check valve A12, and the T4 port of check valve B13 are all connected to the oil inlet P5 of the two-way solenoid directional valve 14 through pipelines.

[0025] The technical solution provided in this embodiment is as follows: When neutron cylinder 4 and neutron cylinder 5 are working, the two-way solenoid directional valve 14 is in the closed state because it does not receive a signal from the operation panel. At this time, the hydraulic oil in the left and right chambers of neutron cylinder 4 and neutron cylinder 2 cannot be depressurized and flow back to the oil tank. When neutron cylinder 4 and neutron cylinder 2 need to be depressurized and unloaded, they can be operated through the external operation panel, which feeds back a signal to the two-way solenoid directional valve 14, causing the two-way solenoid directional valve 14 to be in the open state. At this time, the left and right chambers of neutron cylinder 4 and neutron cylinder 2 are... The hydraulic oil passes through parallel check valves A10, B11, A12, and B13, and is depressurized back to the oil tank via the T port of the two-way solenoid directional valve 14. This achieves the effect of simultaneous depressurization of the left and right chambers of neutron cylinder 4 and neutron cylinder 5. If there are more cylinders, they can be connected in parallel according to the number of cylinders. When depressurizing, only one two-way solenoid directional valve 14 is needed to achieve the effect of simultaneous unloading of multiple neutron cylinders, which effectively improves the depressurization efficiency of neutron cylinders. Moreover, the structure is simple and helps to reduce the cost of use.

[0026] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A multi-group parallel connection of neutron oil cylinder oil circuit for injection molding machine, comprising a neutron valve plate (1), an oil tank, a neutron oil cylinder I (4) and a neutron oil cylinder II (5), characterized in that, The neutron valve plate (1) is provided with an oil inlet pipe, an oil return pipe and an unloading pipe. One end of the oil inlet pipe is an oil inlet (2) and one end of the oil return pipe is an oil return outlet (3). The neutron valve plate (1) is equipped with two or more Y-type three-position four-way directional valves (6) and (7) for controlling the operation of neutron cylinder 1 (4) and neutron cylinder 2 (5), two or more stacked bidirectional check valves (8) and (9) for maintaining the pressure of neutron cylinder 1 (4) and neutron cylinder 2 (5), check valves A (10) and B (11) for controlling the rapid depressurization of neutron cylinder 1 (4), check valves A (12) and B (13) for controlling the rapid depressurization of neutron cylinder 2 (5), and a two-way solenoid directional valve (14) for the rapid unloading of neutron cylinder 1 (4) and neutron cylinder 2 (5).

2. The multi-group parallel oil circuit of the neutron oil cylinder for the injection molding machine according to claim 1, characterized in that, The oil inlet (2) is connected to the P port of the Y-type three-position four-way reversing valve one (6) and the Y-type three-position four-way reversing valve two (7) through pipelines respectively. The oil return port (3) is connected to the T port of the Y-type three-position four-way reversing valve one (6), the Y-type three-position four-way reversing valve two (7) and the two-way solenoid reversing valve (14) through pipelines respectively, and is connected to the oil tank.

3. The multi-group parallel oil circuit of the neutron oil cylinder for the injection molding machine according to claim 1, characterized in that, The A1 and B1 ports of the Y-type three-position four-way reversing valve (6) are connected to the stacked bidirectional one-way valve (8) through pipes. The stacked bidirectional one-way valve (8) is connected to the left and right chambers of the neutron cylinder (4) through pipes respectively.

4. The multi-group parallel oil circuit of the neutron oil cylinder for the injection molding machine according to claim 1, characterized in that, The A2 and B2 ports of the Y-type three-position four-way reversing valve (7) are connected to the stacked bidirectional one-way valve (9) through pipes. The stacked bidirectional one-way valve (9) is connected to the left and right chambers of the neutron cylinder (5) through pipes respectively.

5. The multi-group parallel oil circuit of the neutron oil cylinder for the injection molding machine according to claim 1, characterized in that, The one-way valve A (10) and one-way valve B (11) are connected in parallel on the pipeline between the stacked bidirectional one-way valve A (8) and the neutron cylinder A (4), respectively. The one-way valve B (12) and one-way valve B (13) are connected in parallel on the pipeline between the stacked bidirectional one-way valve B (9) and the neutron cylinder B (5), respectively.

6. The multi-group parallel oil circuit of the neutron oil cylinder for the injection molding machine according to claim 1, characterized in that, The T1 port of the one-way valve A (10), the T2 port of the one-way valve B (11), the T3 port of the one-way valve A (12), and the T4 port of the one-way valve B (13) are all connected to the oil inlet P5 of the two-way solenoid directional valve (14) through a pipeline.

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