Oil way for preventing injection cylinder from shaking

Abstract

The utility model discloses an oil circuit for preventing the jitter of injection cylinder, including injection cylinder body, also including first solenoid directional valve, regulation and control subassembly, quick release valve and second solenoid directional valve, first solenoid directional valve is used for generating backpressure to injection cylinder body, quick release valve is used for the discharge of backpressure, and the second solenoid directional valve is used for regulating and controlling the jitter of injection cylinder body. And the second electromagnetic directional valve is arranged at the control end of the injection cylinder body. By means of the design of the injection cylinder body, the first electromagnetic directional valve, the quick discharge valve, the second electromagnetic directional valve and the regulation and control assembly, when the injection cylinder body is started, the first electromagnetic directional valve is powered on to be started, back pressure is generated in a rod cavity of the injection cylinder body through the cartridge valve, an injection piston in the injection cylinder body moves stably, and the injection cylinder body is started. And then the first electromagnetic directional valve is powered off in a delayed mode, the second electromagnetic directional valve is powered on, the cartridge valve is closed, back pressure in the rod cavity is rapidly discharged through the rapid discharging valve, and therefore shaking when the injection cylinder body is started is prevented.

Description

Technical Field

[0001] This utility model relates to the field of injection cylinder technology, and in particular to an oil circuit for preventing injection cylinder vibration. Background Technology

[0002] Extrusion casting is a material forming method in which qualified molten molten metal is directly injected into a high-strength pressure chamber or mold cavity, and then continuous mechanical static pressure is applied. Under the action of pressure, the molten metal undergoes rheological filling, crystallization and solidification, and rheological shrinkage, ultimately obtaining a part with dense internal structure, smooth appearance and accurate dimensions. The relevant actions are controlled by the injection cylinder.

[0003] However, when the existing injection cylinder is started, the vibration of the injection piston causes fluctuations in the molten metal, resulting in significant undulations of the molten metal within the mold. This leads to defects such as dents and gaps on the surface of the metal casting after extrusion molding, affecting the quality of the casting. Utility Model Content

[0004] The purpose of this invention is to provide an oil circuit that prevents injection cylinder vibration, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an oil circuit for preventing injection cylinder vibration, comprising an injection cylinder body, and further comprising:

[0006] The first electromagnetic reversing valve is located at the oil inlet end of the injection cylinder body and is used to generate back pressure for the injection cylinder body.

[0007] A control component is disposed between the injection cylinder and the first electromagnetic reversing valve;

[0008] A quick-release valve is located at the oil outlet end of the injection cylinder body and is used to release back pressure.

[0009] The second electromagnetic reversing valve is located at the control end of the injection cylinder.

[0010] Preferably, the control component includes a cartridge valve and a pressure regulating valve, wherein the cartridge valve is used to adjust the direction of the oil circuit and the pressure regulating valve is used to adjust the oil circuit pressure.

[0011] Preferably, the output end of the first electromagnetic reversing valve is connected to the input end of the pressure regulating valve, the output end of the pressure regulating valve is connected to the input end of the cartridge valve, and the output end of the cartridge valve is connected to the oil inlet end of the injection cylinder.

[0012] Preferably, an oil supply pipe is provided between the injection cylinder, the cartridge valve, the pressure regulating valve, the first solenoid directional valve, the quick exhaust valve, and the second solenoid directional valve, and the oil supply pipe is used for through connection between each port.

[0013] Preferably, the oil outlet end of the injection cylinder is connected in a through connection with the input end of the cartridge valve, and the oil outlet end of the injection cylinder is connected in a through connection with the input end of the second solenoid directional valve.

[0014] Preferably, the bottom end of the injection cylinder is fixedly connected to a mounting post, and the bottom of the mounting post is fixedly connected to a connecting stud for installing an oil pipeline.

[0015] Preferably, the outer wall of the connecting stud is provided with an anti-loosening component to prevent the connecting stud from falling off. The anti-loosening component includes a rotating rod and a locking block. One end of the rotating rod is fixedly connected to one side of the locking block. The other end of the rotating rod has a slot. A round rod is inserted into the slot. A mounting seat for mounting the round rod is provided on the outside of the round rod. One end of the mounting seat is fixedly connected to the outer wall of the connecting stud.

[0016] Preferably, the outer wall of the mounting column is provided with a slot for inserting the card block, and the bottom end of the inner wall of the slot is provided with a groove for restricting the movement of the card block.

[0017] The technical effects and advantages of this utility model are as follows:

[0018] This invention utilizes the design of an injection cylinder, a first solenoid directional valve, a quick-release valve, a second solenoid directional valve, and a control assembly. When starting the injection cylinder, the first solenoid directional valve is first energized, generating back pressure in the rod chamber of the injection cylinder through the cartridge valve, thus ensuring smooth movement of the injection piston inside the injection cylinder. Then, the first solenoid directional valve is de-energized after a delay, and the second solenoid directional valve is energized, closing the cartridge valve. This allows the back pressure inside the rod chamber to be quickly discharged through the quick-release valve, thereby preventing vibration during the start-up of the injection cylinder. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the oil circuit of this utility model.

[0020] Figure 2 This is a schematic diagram of the connection structure between the injection cylinder and the oil supply pipe of this utility model.

[0021] Figure 3 For this utility model Figure 2 A schematic diagram of the enlarged structure of A in the middle.

[0022] Figure 4 This is a three-dimensional structural diagram of the anti-loosening component of this utility model.

[0023] Figure 5This is a three-dimensional structural diagram of the rotating rod and the locking block of this utility model.

[0024] Figure 6 This is a three-dimensional structural diagram of the mounting base and round rod of this utility model.

[0025] In the diagram: 1. Injection cylinder; 2. Cartridge valve; 3. Pressure regulating valve; 4. First solenoid directional valve; 5. Quick exhaust valve; 6. Second solenoid directional valve; 7. Oil supply pipe; 8. Connecting stud; 9. Mounting post; 10. Anti-loosening component; 101. Rotating rod; 102. Locking block; 103. Mounting seat; 104. Round rod. Detailed Implementation

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] This utility model provides, for example Figure 1-6 The oil circuit shown includes an injection cylinder body 1, and further includes:

[0028] The first electromagnetic reversing valve 4 is located at the oil inlet end of the injection cylinder 1 and is used to generate back pressure for the injection cylinder 1.

[0029] A control component is disposed between the injection cylinder 1 and the first solenoid directional valve 4.

[0030] Quick-release valve 5 is located at the oil outlet end of the injection cylinder 1 and is used to discharge back pressure.

[0031] The second electromagnetic reversing valve 6 is located at the control end of the injection cylinder 1.

[0032] Specifically, the control components include a cartridge valve 2 and a pressure regulating valve 3. The cartridge valve 2 is used to adjust the direction of the oil circuit, and the pressure regulating valve 3 is used to adjust the oil circuit pressure. The output end of the first solenoid directional valve 4 is connected to the input end of the pressure regulating valve 3. The output end of the pressure regulating valve 3 is connected to the input end of the cartridge valve 2. The output end of the cartridge valve 2 is connected to the oil inlet end of the injection cylinder 1. An oil supply pipe 7 is provided between the injection cylinder 1, the cartridge valve 2, the pressure regulating valve 3, the first solenoid directional valve 4, the quick discharge valve 5, and the second solenoid directional valve 6. The oil supply pipe 7 is used for the connection between the various ports. The oil outlet end of the injection cylinder 1 is connected to the input end of the cartridge valve 2. The oil outlet end of the injection cylinder 1 is connected to the input end of the second solenoid directional valve 6. The bottom end of the injection cylinder 1 is fixedly connected to the mounting post 9. The bottom of the mounting post 9 is fixedly connected to the connecting stud 8 for installing the oil supply pipe 7.

[0033] Furthermore, cartridge valve 2, pressure regulating valve 3, and first solenoid directional valve 4 form one circuit, which are connected sequentially through oil supply pipe 7. Second solenoid directional valve 6 and quick-release valve 5 form another circuit, which are also connected sequentially through oil supply pipe 7. The output end of cartridge valve 2 is connected to the oil inlet end of injection cylinder 1 through oil supply pipe 7, and the input end of quick-release valve 5 is connected to the oil outlet end of injection cylinder 1 through oil supply pipe 7. When starting injection cylinder 1, first solenoid directional valve 4 is energized to start it, and back pressure is generated in the rod chamber of injection cylinder 1 through cartridge valve 2, so that the injection piston inside injection cylinder 1 moves smoothly. Then, first solenoid directional valve 4 is de-energized after a delay, and second solenoid directional valve 6 is energized to close cartridge valve 2, so that the back pressure inside rod chamber is quickly discharged through quick-release valve 5, thereby preventing vibration when injection cylinder 1 is started.

[0034] Specifically, the outer wall of the connecting stud 8 is provided with an anti-loosening component 10 to prevent the connecting stud 8 from falling off. The anti-loosening component 10 includes a rotating rod 101 and a locking block 102. One end of the rotating rod 101 is fixedly connected to one side of the locking block 102. The other end of the rotating rod 101 has a slot. A round rod 104 is inserted into the slot. A mounting base 103 for mounting the round rod 104 is provided on the outside of the round rod 104. One end of the mounting base 103 is fixedly connected to the outer wall of the connecting stud 8. The outer wall of the mounting post 9 has a slot for inserting the locking block 102. The bottom end of the inner wall of the slot has a slot for restricting the movement of the locking block 102.

[0035] Furthermore, the connecting stud 8 is fixedly installed at the end of the oil pipe 7. The end of the connecting stud 8 facing the mounting post 9 is threaded. The threaded end of the connecting stud 8 is threadedly inserted into the mounting post 9. The connection method of the connecting stud 8 and the mounting post 9 is the existing oil pipe threaded joint method. The connecting stud 8 and the mounting post 9 are used for the connection between the oil pipe 7 and the injection cylinder body 1. The anti-loosening component 10 is installed on the outer wall of the connecting stud 8. The number of slots and grooves corresponds to the number of anti-loosening components 10. The rotating rod 101 is an L-shaped rod. The part of the locking block 102 that contacts the rotating rod 101 is welded and fixed. The locking block 102 and the rotating rod 101 are arranged perpendicular to each other. The groove is a strip groove. The mounting seat 103 is welded and fixed to the outer wall of the connecting stud 8. The end of the mounting seat 103 away from the connecting stud 8 is provided with a through groove. The end of the round rod 104 is welded and fixed to the inner wall of the through groove. The round rod 104 is inserted into the groove. The size of the slot is 1.02 times the size of the locking block 102. The horizontal cross-section of the slot is T-shaped. After the connecting stud 8 and the mounting post 9 are threaded together, the rotating rod 101 is moved away from the round rod 104, so that the round rod 104 moves to the bottom of the slot, allowing the rotating rod 101 to rotate. The locking block 102 is then inserted into the slot. After releasing the rotating rod 101, it will fall vertically under its own weight, causing the locking block 102 to fall into the slot. At this time, the round rod 104 moves to the top of the slot, causing the bottom of the rotating rod 101 to press against the mounting base 103, restricting the rotation of the rotating rod 101 and preventing the locking block 102 from being removed from the slot. When the threads of the connecting stud 8 and the mounting post 9 are damaged after long-term use, the anti-loosening component 10 restricts the mounting post 9 from moving away from the connecting stud 8, thereby reducing the occurrence of oil leakage.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An oil circuit for preventing injection cylinder vibration, comprising an injection cylinder body (1), characterized in that, Also includes: The first electromagnetic reversing valve (4) is located at the oil inlet end of the injection cylinder (1) and is used to generate back pressure for the injection cylinder (1). A control component is disposed between the injection cylinder (1) and the first electromagnetic reversing valve (4); Quick-release valve (5), the quick-release valve (5) is located at the oil outlet end of the injection cylinder (1), the quick-release valve (5) is used to discharge back pressure; The second electromagnetic reversing valve (6) is located at the control end of the injection cylinder (1).

2. The oil circuit for preventing injection cylinder vibration according to claim 1, characterized in that, The control component includes a cartridge valve (2) and a pressure regulating valve (3). The cartridge valve (2) is used to adjust the direction of the oil circuit, and the pressure regulating valve (3) is used to adjust the oil circuit pressure.

3. The oil circuit for preventing injection cylinder vibration according to claim 2, characterized in that, The output end of the first electromagnetic reversing valve (4) is connected to the input end of the pressure regulating valve (3), the output end of the pressure regulating valve (3) is connected to the input end of the cartridge valve (2), and the output end of the cartridge valve (2) is connected to the oil inlet end of the injection cylinder (1).

4. The oil circuit for preventing injection cylinder vibration according to claim 3, characterized in that, Oil supply pipes (7) are provided between the injection cylinder (1), cartridge valve (2), pressure regulating valve (3), first solenoid directional valve (4), quick discharge valve (5) and second solenoid directional valve (6), and the oil supply pipes (7) are used for through connection between each port.

5. The oil circuit for preventing injection cylinder vibration according to claim 1, characterized in that, The oil outlet of the injection cylinder (1) is connected to the input of the cartridge valve (2), and the oil outlet of the injection cylinder (1) is connected to the input of the second solenoid directional valve (6).

6. The oil circuit for preventing injection cylinder vibration according to claim 4, characterized in that, The bottom end of the injection cylinder (1) is fixedly connected to the mounting post (9), and the bottom of the mounting post (9) is fixedly connected to the connecting stud (8) for the installation of the oil pipeline (7).

7. The oil circuit for preventing injection cylinder vibration according to claim 6, characterized in that, The outer wall of the connecting stud (8) is provided with an anti-loosening component (10) to prevent the connecting stud (8) from falling off. The anti-loosening component (10) includes a rotating rod (101) and a locking block (102). One end of the rotating rod (101) is fixedly connected to one side of the locking block (102). The other end of the rotating rod (101) is provided with a slot. A round rod (104) is inserted inside the slot. A mounting seat (103) for mounting the round rod (104) is provided outside the round rod (104). One end of the mounting seat (103) is fixedly connected to the outer wall of the connecting stud (8).

8. The oil circuit for preventing injection cylinder vibration according to claim 7, characterized in that, The outer wall of the mounting post (9) is provided with a slot for inserting the card block (102), and the bottom end of the inner wall of the slot is provided with a groove for restricting the movement of the card block (102).

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