Oil cylinder oil drainage structure with both linear reciprocating motion and rotary motion
By designing an oil drain structure with linear reciprocating and rotating movement in the oil cylinder of the injection molding machine, the oil film brought out of the piston rod is brushed down and transported to the oil tank pipeline by using the oil discharge mechanism, the problem of leakage of the oil film of the traditional injection molding machine is solved, and the oil film leakage is achieved. The sealing and efficient use of hydraulic oil.
Patent Information
- Application Number
- CN202323638215.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-28
- Publication Date
- 2025-01-17
- Estimated Expiration
- 2033-12-28
AI Technical Summary
When the cylinder piston rod of a traditional injection molding machine rotates and retreats at high speed, the oil film brought out is separated and thrown out due to the action of centrifugal force, resulting in hydraulic oil leakage.
A oil drain structure of oil cylinder with both linear reciprocating and rotating movement is designed. By providing a retractable piston rod, a skeleton oil seal and an oil discharge mechanism in the oil cylinder, it includes a first oil discharge ring groove, a first pillar, an oil brush, The second oil discharge ring groove, the second pillar, the third oil brush, the oil discharge passage and the check valve ensure that the oil film is effectively brushed down during the expansion and rotational movement of the piston rod and transported to the oil tank pipeline to prevent leakage.
It effectively prevents the leakage of the oil film brought out of the linear movement and rotary movement of the piston rod, ensures the sealing of the hydraulic oil, and improves the efficiency of the injection molding machine.
Smart Images
Figure CN222363215U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an oil leakage structure, in particular to an oil cylinder oil leakage structure with both linear reciprocating and rotary motions. Background Art
[0002] The structure of a single-cylinder injection cylinder of a traditional injection molding machine mainly includes an injection cylinder, a cylinder front cover, a fixing plate, and a cylinder piston rod. The cylinder piston rod can perform telescopic movements on the injection cylinder, wherein the cylinder piston rod moves in a linear and rotational manner when moving backward, and the rotation speed is very high (≧300rpm). The linear backward force is provided by the reaction force of the molten plastic; the cylinder piston rod moves forward and backward in a linear manner, and the forward speed of the cylinder piston rod is very high (≧500mm / s). Therefore, the oil film brought out by the cylinder piston rod when moving forward will be separated and thrown out under the centrifugal force when the cylinder piston rod rotates backward at a high speed, causing hydraulic oil leakage. Utility Model Content
[0003] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a cylinder oil leakage structure with both linear reciprocating and rotary motions, which effectively solves the problems mentioned in the above technical background.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: the utility model includes a cylinder body for use, a retractable piston rod is arranged inside the cylinder body, a cylinder front cover is installed at one end of the cylinder body, a fixing seat is fixed on one side of the cylinder front cover, and a cavity is opened inside the fixing seat, and also includes a skeleton oil seal, a skeleton oil seal is arranged between the piston rod and the cylinder front cover, and oil unloading mechanisms are arranged on both sides of the skeleton oil seal;
[0005] The oil unloading mechanism includes a first oil unloading ring groove, a first pillar, a first oil brush, a second oil brush, a second oil unloading ring groove, a second pillar, a third oil brush, a first oil unloading channel, a second oil unloading channel, an oil tank pipeline, a third oil unloading channel and a one-way valve. The first oil unloading ring groove is opened on one side of the skeleton oil seal, and two annular first pillars are symmetrically arranged inside the first oil unloading ring groove. The first oil brush is arranged on the first pillar at the top of the inner side of the first oil unloading ring groove, and the second oil brush is arranged on the first pillar at the bottom of the inner side of the first oil unloading ring groove. The second oil unloading ring groove is opened on the other side of the skeleton oil seal, and a plurality of second pillars are installed inside the second oil unloading ring groove. A third oil brush parallel to the piston rod is arranged at one end of the second pillar, and a first oil unloading channel is opened in the cavity. The second oil unloading channel is connected to one side of the second oil unloading ring groove, and the third oil unloading channel is connected to one side of the first oil unloading ring groove. One end of the first oil unloading channel, the second oil unloading channel and the third oil unloading channel are connected to the oil tank pipeline.
[0006] Preferably, the movement mode of the piston rod is linear motion and rotational motion.
[0007] Preferably, the first oil brush is arranged to be inclined upward, and the second oil brush is arranged to be inclined downward.
[0008] Preferably, one-way valves are installed on the first oil unloading channel, the second oil unloading channel and the third oil unloading channel.
[0009] Preferably, the oil tank pipeline is connected to an external oil tank.
[0010] Preferably, the second oil brushes and the third oil brushes are evenly arranged in a ring shape.
[0011] Beneficial effect: When the utility model is used, when the oil film brought out by the extended piston rod passes through the first oil unloading ring groove, the first oil brush installed in the first oil unloading ring groove will brush the oil film down and enter the first oil unloading ring groove. When the oil film at the outer end of the retracted piston rod passes through the first oil unloading ring groove, the second oil brush installed in the first oil unloading ring groove will brush the oil film down and enter the first oil unloading ring groove, and then be discharged through the third oil unloading channel connected to the first oil unloading ring groove. When the piston rod rotates, the oil film on the piston rod will be brushed down by the third oil brush, and the brushed oil film enters the second oil unloading ring groove, and is transported to the oil tank pipeline through the second oil unloading channel connected to the second oil unloading ring groove, which can better unload the oil film brought out by the linear motion and rotational motion of the piston rod without causing leakage of the hydraulic oil. The utility model has a novel structure and an ingenious conception, can better unload the oil film brought out by the linear motion and rotational motion of the piston rod without causing leakage of the hydraulic oil, and is convenient for use. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:
[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0014] Figure 2 This is a schematic diagram of the third oil brush arrangement structure of the utility model;
[0015] Figure 3 This is a schematic diagram of the first oil brush arrangement structure of the utility model;
[0016] Figure 4 This utility model Figure 1 The structural diagram of A in the figure;
[0017] Numbers in the figure: 1. Cylinder body; 2. Piston rod; 3. Cylinder front cover; 4. Fixed seat; 5. Cavity; 6. Skeleton oil seal; 7. First oil unloading ring groove; 8. First pillar; 9. First oil brush; 10. Second oil brush; 11. Second oil unloading ring groove; 12. Second pillar; 13. Third oil brush; 14. First oil unloading channel; 15. Second oil unloading channel; 16. Oil tank pipeline; 17. Third oil unloading channel; 18. One-way valve. DETAILED DESCRIPTION
[0018] The following is combined with Figure 1-4 The specific implementation modes of the present utility model are further described in detail.
[0019] Embodiment 1, by Figure 1-4 The utility model provides an oil cylinder oil leakage structure with both linear reciprocating and rotary motions, including an oil cylinder body 1 for use, a retractable piston rod 2 is arranged inside the oil cylinder body 1, an oil cylinder front cover 3 is installed at one end of the oil cylinder body 1, a fixing seat 4 fixed to one side of the oil cylinder front cover 3 and a cavity 5 opened inside the fixing seat 4, and also includes a skeleton oil seal 6, a skeleton oil seal 6 is arranged between the piston rod 2 and the oil cylinder front cover 3, and oil unloading mechanisms are arranged on both sides of the skeleton oil seal 6;
[0020] The oil unloading mechanism includes a first oil unloading ring groove 7, a first support 8, a first oil brush 9, a second oil brush 10, a second oil unloading ring groove 11, a second support 12, a third oil brush 13, a first oil unloading channel 14, a second oil unloading channel 15, an oil tank pipeline 16, a third oil unloading channel 17 and a one-way valve 18. The first oil unloading ring groove 7 is opened on one side of the skeleton oil seal 6. Two annular first support pillars 8 are symmetrically arranged inside the first oil unloading ring groove 7. The first oil brush 9 is arranged on the first support pillar 8 at the top of the inner side of the first oil unloading ring groove 7. The first support pillar 8 at the bottom of the inner side of the first oil unloading ring groove 7 is provided with a first oil brush 9. A second oil brush 10 is provided on the column 8, a second oil unloading ring groove 11 is provided on the other side of the skeleton oil seal 6, a plurality of second pillars 12 are installed inside the second oil unloading ring groove 11, a third oil brush 13 parallel to the piston rod 2 is provided at one end of the second pillar 12, a first oil unloading channel 14 is provided in the cavity 5, a second oil unloading channel 15 is connected to one side of the second oil unloading ring groove 11, a third oil unloading channel 17 is connected to one side of the first oil unloading ring groove 7, and one end of the first oil unloading channel 14, the second oil unloading channel 15 and the third oil unloading channel 17 are connected to the oil tank pipeline 16.
[0021] Embodiment 2
[0022] The piston rod 2 in the first embodiment is inconvenient to use. Figure 1 As another preferred embodiment, the difference from the first embodiment is that the movement mode of the piston rod 2 is linear motion and rotational motion, which is convenient for the use of the piston rod 2.
[0023] Embodiment 3
[0024] In the first embodiment, the first oil brush 9 is inconvenient to use. Figure 1 As another preferred embodiment, the difference from the first embodiment is that the first oil brush 9 is inclined upward, and the second oil brush 10 is inclined downward, so that the piston rod 2 can be better brushed with oil when it is extended or retracted.
[0025] Embodiment 4
[0026] In the first embodiment, the hydraulic oil in the first oil unloading channel 14, the second oil unloading channel 15 and the third oil unloading channel 17 is easy to flow back. Figure 1 As another preferred embodiment, the difference from the first embodiment is that a one-way valve 18 is installed on the first oil unloading channel 14, the second oil unloading channel 15 and the third oil unloading channel 17 to prevent oil from flowing back.
[0027] Embodiment 5
[0028] In the first embodiment, the fuel tank pipe 16 is inconvenient to use. Figure 1 As another preferred embodiment, the difference from the first embodiment is that the oil tank pipeline 16 is connected to the external oil tank to facilitate the reflux.
[0029] Embodiment 6
[0030] In the first embodiment, the second oil brush 10 and the third oil brush 13 are inconvenient to use. Figure 1 As another preferred embodiment, the difference from the first embodiment is that the second oil brush 10 and the third oil brush 13 are evenly arranged in a ring shape, which facilitates the use of the third oil brush 13.
[0031] Working principle: When the utility model is used, when the oil film brought out by the extended piston rod 2 passes through the first oil unloading ring groove 7, the first oil brush 9 installed in the first oil unloading ring groove 7 will brush the oil film down and enter the first oil unloading ring groove 7. When the oil film at the outer end of the retracted piston rod 2 passes through the first oil unloading ring groove 7, the second oil brush 10 installed in the first oil unloading ring groove 7 will brush the oil film down and enter the first oil unloading ring groove 7, and then be discharged through the third oil unloading channel 17 connected to the first oil unloading ring groove 7. When the piston rod 2 rotates, the oil film on the piston rod 2 will be brushed down by the third oil brush 13, and the brushed oil film enters the second oil unloading ring groove 11, and is transported to the oil tank pipeline 16 through the second oil unloading channel 15 connected to the second oil unloading ring groove 11, so that the oil film brought out by the linear motion and rotational motion of the piston rod 2 can be better unloaded without causing leakage of hydraulic oil.
[0032] Beneficial effects: The utility model has a novel structure and an ingenious design, and can effectively unload the oil film brought about by the linear motion and rotational motion of the piston rod 2 without causing leakage of the hydraulic oil, which is convenient for use.
[0033] Through the personnel in this field, all the electrical components in this case are connected to their corresponding power supplies through wires, and appropriate controllers and encoders should be selected according to actual conditions to meet the control requirements. The specific connection and control sequence should refer to the following working principle, and the electrical connection between the electrical components is completed in the order of working in sequence. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principles and processes, and no longer explains the electrical control.
[0034] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A cylinder oil drain structure with both linear reciprocating and rotary motions, comprising a cylinder body (1) for use, a retractable piston rod (2) disposed inside the cylinder body (1), a cylinder front cover (3) mounted at one end of the cylinder body (1), a fixing seat (4) fixed to one side of the cylinder front cover (3), and a cavity (5) opened inside the fixing seat (4), characterized in that: It also includes a skeleton oil seal (6), wherein the skeleton oil seal (6) is arranged between the piston rod (2) and the cylinder front cover (3), and oil unloading mechanisms are arranged on both sides of the skeleton oil seal (6); The oil unloading mechanism comprises a first oil unloading ring groove (7), a first support (8), a first oil brush (9), a second oil brush (10), a second oil unloading ring groove (11), a second support (12), a third oil brush (13), a first oil unloading passage (14), a second oil unloading passage (15), an oil tank pipeline (16), a third oil unloading passage (17) and a one-way valve (18). The first oil unloading ring groove (7) is provided on one side of the skeleton oil seal (6). Two annular first support pillars (8) are symmetrically arranged inside the first oil unloading ring groove (7). The first oil brush (9) is arranged on the first support pillar (8) at the top of the inner side of the first oil unloading ring groove (7). The third oil brush (13) is arranged on the bottom of the inner side of the first oil unloading ring groove (7). A second oil brush (10) is arranged on a pillar (8), a second oil unloading ring groove (11) is provided on the other side of the skeleton oil seal (6), a plurality of second pillars (12) are installed inside the second oil unloading ring groove (11), a third oil brush (13) parallel to the piston rod (2) is arranged at one end of the second pillar (12), a first oil unloading passage (14) is arranged in the cavity (5), one side of the second oil unloading ring groove (11) is connected to the second oil unloading passage (15), one side of the first oil unloading ring groove (7) is connected to the third oil unloading passage (17), and one end of the first oil unloading passage (14), the second oil unloading passage (15) and the third oil unloading passage (17) are connected to an oil tank pipeline (16).
2. The oil cylinder oil drain structure with both linear reciprocating and rotary motion according to claim 1, characterized in that: The movement modes of the piston rod (2) are linear motion and rotational motion.
3. The oil cylinder oil drain structure with both linear reciprocating and rotary motion according to claim 1, characterized in that: The first oil brush (9) is arranged to be inclined upward, and the second oil brush (10) is arranged to be inclined downward.
4. The oil cylinder oil drain structure with both linear reciprocating and rotary motion according to claim 1, characterized in that: One-way valves (18) are installed on the first oil unloading channel (14), the second oil unloading channel (15) and the third oil unloading channel (17).
5. The oil cylinder oil drain structure with both linear reciprocating and rotary motion as claimed in claim 1, characterized in that: The oil tank pipeline (16) is connected to an external oil tank.
6. The oil cylinder oil drain structure with both linear reciprocating and rotary motion according to claim 1, characterized in that: The second oil brush (10) and the third oil brush (13) are evenly arranged in a ring shape.