Oil suction mechanism of vulcanizing machine and hydraulic system of vulcanizing machine
Patent Information
- Application Number
- CN202522487620.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-24
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-11-24
AI Technical Summary
[0004]然而，油缸吸回油口的口径增大后，提速的同时会引发新的问题，比如各个油缸吸回油口处阀门开启不同步、开启行程不一致，导致模具合模精度下降，出现产品尺寸偏差、表面瑕疵等质量问题，同时还会增加设备运行时的冲击力和噪音，缩短液压元件的使用寿命，进而影响生产的稳定性和产品的合格率
[0019]该硫化机吸回油机构通过回油法兰、充液阀、中间法兰和过渡法兰形成贯通流道，结构紧凑，减少了泄漏点，尤其是中间法兰中的限位支撑端面，能精确限制充液阀顶杆的最大行程，并结合限位支撑端面上的通孔设计，确保各个油缸吸回油口的有效通流面积相同，提升了各个油缸工作的同步性、可靠性、稳定性与控制精度，有助于硫化机平稳运行，满足工艺要求。
Smart Images
Figure CN224919580U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hydraulic control technology, and in particular to a vulcanizing machine oil suction return mechanism and a vulcanizing machine hydraulic system. Background Technology
[0002] The large flat vulcanizing machine adopts a multi-cylinder configuration, with one cylinder serving as an auxiliary cylinder and equipped with a power station for active oil suction. The other cylinders passively suction oil through filling valves. After the mold is closed, oil replenishment, pressurization, and vulcanization timing are synchronized. The oil suction port of the vulcanizing machine's cylinders is generally equipped with components such as filling valves, return flanges, seals, fasteners, and pipes.
[0003] With advancements in technology, existing processes and equipment can no longer meet the demands of modern technological development and require further improvement. For example, the required mold opening speed has increased from 0.2mm / s to 8mm / s to 10mm / s to 50mm / s. Common methods to achieve this speed increase include increasing the diameter of the hydraulic cylinder's oil return port and modifying the hydraulic pipeline configuration.
[0004] However, increasing the diameter of the hydraulic cylinder's suction port, while increasing speed, also introduces new problems. For example, valves at the suction ports of different cylinders may open asynchronously or have inconsistent opening strokes, leading to decreased mold closing accuracy and quality issues such as product dimensional deviations and surface defects. It also increases the impact force and noise during equipment operation, shortens the lifespan of hydraulic components, and consequently affects production stability and product yield. Furthermore, the flow distribution of the hydraulic system is even more critical. If the system design is unreasonable or the control precision is insufficient, phenomena such as oil pressure fluctuations and motion jamming may occur, further restricting the improvement of production efficiency and the assurance of product quality. Utility Model Content
[0005] The purpose of this utility model is to provide a vulcanizing machine oil suction mechanism and a vulcanizing machine hydraulic system. Under the condition that the diameter of the oil suction port of the oil cylinder remains unchanged, the hydraulic pipeline configuration is modified to achieve mold opening speed increase and smooth operation.
[0006] To achieve this objective, the present invention adopts the following technical solution:
[0007] A vulcanizing machine oil suction mechanism includes an oil return flange, a filling valve, an intermediate flange and a transition flange connected in sequence. A through flow channel is formed in the oil return flange, the filling valve, the intermediate flange and the transition flange. The oil return flange is connected to an oil tank pipeline and the transition flange is connected to the oil cylinder suction port.
[0008] The filling valve includes a valve body and a cylinder and a valve core disposed in the valve body. The cylinder is fixedly connected to the inner wall of the valve body. A push rod is provided in the cylinder body extending to one side of the intermediate flange. The valve core is installed on the push rod and cooperates with the valve body to close or open the flow channel.
[0009] The intermediate flange is provided with a limit support end face, which is used to limit the maximum extension stroke of the push rod. Several through holes are opened on the limit support end face to limit the effective flow area of the flow channel.
[0010] As an optional solution, four through holes are provided, which are evenly spaced around the circumference to form an X-shaped rib. The intersection of the X-shaped ribs is the contact point with the top rod.
[0011] As an alternative, the valve body is provided with a control port that communicates with the flow channel, and the surface of the cylinder is provided with a balance port that communicates with the rodless chamber of the cylinder.
[0012] As an alternative, the cylinder block extends into the return flange or into the pipeline between the return flange and the oil tank.
[0013] As an alternative, the filling valve, intermediate flange, and transition flange are fastened together by the first bolt, the return flange is fastened to the filling valve by the second bolt, and the transition flange is fastened to the oil cylinder suction port by the third bolt.
[0014] As an optional solution, sealing rings are installed between the return flange and the filling valve, between the filling valve and the intermediate flange, between the intermediate flange and the transition flange, and between the transition flange and the oil cylinder suction port.
[0015] On the other hand, the present invention adopts the following technical solution:
[0016] A hydraulic system for a vulcanizing machine includes a main oil tank with several oil tank pipes that are connected one-to-one with the oil return ports of each oil cylinder. The aforementioned oil return mechanism for the vulcanizing machine is installed at the port of each oil tank pipe.
[0017] As an optional solution, the hydraulic system of the vulcanizing machine also includes an active oil suction pipe that connects to the auxiliary cylinder port and a pressurization pipe that connects to several cylinder pressurization ports.
[0018] The beneficial effects of this utility model are:
[0019] The vulcanizing machine's oil return mechanism forms a through-flow channel through the oil return flange, filling valve, intermediate flange, and transition flange. Its compact structure reduces leakage points. In particular, the limiting support end face in the intermediate flange precisely limits the maximum stroke of the filling valve's push rod. Combined with the through-hole design on the limiting support end face, it ensures that the effective flow area of the oil return ports of each cylinder is the same, improving the synchronization, reliability, stability, and control accuracy of each cylinder's operation. This contributes to the smooth operation of the vulcanizing machine and meets process requirements. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the structure of the vulcanizing machine oil suction mechanism provided in this embodiment of the utility model;
[0021] Figure 2 This is an end view of the intermediate flange of the vulcanizing machine oil suction mechanism provided in this embodiment of the utility model;
[0022] Figure 3 This is a schematic diagram of the hydraulic system of the vulcanizing machine provided in this embodiment of the utility model.
[0023] In the attached image:
[0024] 1. Return flange; 2. Filling valve; 2a. Valve body; 2b. Cylinder body; 2c. Valve core; 2d. Push rod; 2e. Control port; 2f. Balance port; 3. Intermediate flange; 3a. Limiting support end face; 3b. Through hole; 3c. X-shaped rib; 4. Transition flange; 5. Oil tank pipeline; 6. Oil cylinder suction return port; 7. First bolt; 8. Second bolt; 9. Third bolt; 10. Sealing ring; 11. Main oil tank; 12. Active oil suction pipeline; 13. Pressurization pipeline. Detailed Implementation
[0025] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.
[0026] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0027] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "on the upper side," and "over" the second feature include the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature include the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0028] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.
[0029] like Figure 1 and Figure 2 As shown, this utility model provides a vulcanizing machine oil suction mechanism, including an oil return flange 1, a filling valve 2, an intermediate flange 3 and a transition flange 4 connected in sequence. A through flow channel is formed in the oil return flange 1, the filling valve 2, the intermediate flange 3 and the transition flange 4. The oil return flange 1 is connected to the oil tank pipeline 5, and the transition flange 4 is connected to the oil cylinder suction port 6.
[0030] The filling valve 2 includes a valve body 2a, a cylinder 2b and a valve core 2c disposed in the valve body 2a. The cylinder 2b is fixedly connected to the inner wall of the valve body 2a. A push rod 2d is disposed in the cylinder 2b and extends to one side of the intermediate flange 3. The valve core 2c is installed on the push rod 2d and cooperates with the valve body 2a to close or open the flow channel.
[0031] The intermediate flange 3 is provided with a limiting support end face 3a, which is used to limit the maximum extension stroke of the top rod 2d. Several through holes 3b are opened on the limiting support end face 3a to limit the effective flow area of the flow channel.
[0032] Thus, a through flow channel is formed by the return flange 1, the filling valve 2, the intermediate flange 3, and the transition flange 4, resulting in a compact structure and reduced leakage points. In particular, the limiting support end face 3a in the intermediate flange 3 can precisely limit the maximum stroke of the filling valve 2 push rod 2d, and combined with the through hole 3b design on the limiting support end face 3a, it ensures that the effective flow area of the oil return port 6 of each cylinder is the same.
[0033] In at least one embodiment, four through holes 3b are provided, and the four through holes 3b are evenly spaced around their circumference to form X-shaped ribs 3c. The intersection area of the X-shaped ribs 3c is the position that contacts the top rod 2d. The number and opening size of the through holes 3b directly affect the effective flow area and can be adjusted according to actual design requirements.
[0034] Optionally, the valve body 2a is provided with a control port 2e communicating with the flow channel, and the surface of the cylinder body 2b is provided with a balance port 2f communicating with the rodless chamber of the cylinder body 2b, so as to automatically balance the oil pressure and meet the pressure holding requirements according to the extension or retraction of the lever.
[0035] Optionally, the cylinder body 2b extends into the return flange 1 or into the oil return flange 1 and the oil tank pipeline 5. Considering the large volume of the cylinder body 2b, the flow channel space can be fully utilized to optimize the volume of the filling valve 2.
[0036] Optionally, the filling valve 2, intermediate flange 3 and transition flange 4 are fastened together by the first bolt 7, the return flange 1 is fastened to the filling valve 2 by the second bolt 8, and the transition flange 4 is fastened to the oil cylinder suction port 6 by the third bolt 9, to ensure reliable connection of each component.
[0037] Furthermore, sealing rings 10 are respectively provided between the return flange 1 and the filling valve 2, between the filling valve 2 and the intermediate flange 3, between the intermediate flange 3 and the transition flange 4, and between the transition flange 4 and the oil cylinder suction port 6 to ensure the sealing of the flow channel.
[0038] Based on this, Figure 3 As shown, this utility model also provides a vulcanizing machine hydraulic system, including a main oil tank 11. The main oil tank 11 is provided with a plurality of oil tank pipes 5 that are connected one-to-one with the oil return ports 6 of each oil cylinder. The aforementioned vulcanizing machine oil return mechanism is installed on the port of the oil tank pipes 5.
[0039] Optionally, the hydraulic system of the vulcanizing machine also includes an active oil suction pipe 12 for docking with the auxiliary cylinder port and a pressurization pipe 13 for docking with the pressurization ports of the cylinders.
[0040] In summary, the hydraulic system of this vulcanizing machine adopts the original cylinder diameter, configures pipeline valves, and controls the maximum stroke of the filling valve. This ensures that when the cylinder diameter has the maximum flow rate, the differential opening stroke of multiple filling valves effectively increases the speed, thereby improving the synchronization, reliability, stability, and control accuracy of each cylinder. This contributes to the smooth operation of the vulcanizing machine and meets the process requirements.
[0041] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A vulcanizing machine oil suction mechanism, characterized in that, It includes a return oil flange (1), a filling valve (2), an intermediate flange (3) and a transition flange (4) connected in sequence. A through flow channel is formed in the return oil flange (1), the filling valve (2), the intermediate flange (3) and the transition flange (4). The return oil flange (1) is connected to the oil tank pipeline (5) and the transition flange (4) is connected to the oil cylinder suction port (6). The filling valve (2) includes a valve body (2a) and a cylinder (2b) and a valve core (2c) disposed in the valve body (2a). The cylinder (2b) is fixedly connected to the inner wall of the valve body (2a). A push rod (2d) is disposed in the cylinder (2b) extending to one side of the intermediate flange (3). The valve core (2c) is mounted on the push rod (2d) and cooperates with the valve body (2a) to close or open the flow channel. The intermediate flange (3) is provided with a limiting support end face (3a), which is used to limit the maximum extension stroke of the top rod (2d). The limiting support end face (3a) is provided with a plurality of through holes (3b) to limit the effective flow area of the flow channel.
2. The vulcanizing machine oil suction mechanism according to claim 1, characterized in that, The four through holes (3b) are evenly spaced around the circumference to form X-shaped ribs (3c), and the intersection of the X-shaped ribs (3c) is the position that contacts the top rod (2d).
3. The vulcanizing machine oil suction mechanism according to claim 1, characterized in that, The valve body (2a) is provided with a control port (2e) communicating with the flow channel, and the surface of the cylinder body (2b) is provided with a balance port (2f) communicating with the rodless cavity of the cylinder body (2b).
4. The vulcanizing machine oil suction mechanism according to claim 1, characterized in that, The cylinder body (2b) extends into the return flange (1) or into the oil tank pipeline (5) between the return flange (1) and the oil tank pipeline (5).
5. The vulcanizing machine oil suction mechanism according to claim 1, characterized in that, The filling valve (2), the intermediate flange (3) and the transition flange (4) are fastened together by the first bolt (7), the return flange (1) is fastened to the filling valve (2) by the second bolt (8), and the transition flange (4) is fastened to the oil cylinder suction port (6) by the third bolt (9).
6. The vulcanizing machine oil suction mechanism according to claim 5, characterized in that, A sealing ring (10) is provided between the return oil flange (1) and the filling valve (2), between the filling valve (2) and the intermediate flange (3), between the intermediate flange (3) and the transition flange (4), and between the transition flange (4) and the oil cylinder suction port (6).
7. A hydraulic system for a vulcanizing machine, characterized in that, It includes a main oil tank (11), on which a plurality of oil tank pipes (5) are provided, each connecting to the oil return port (6) of each oil cylinder, and the oil return mechanism of the vulcanizing machine as described in any one of claims 1-6 is installed at the port of the oil tank pipes (5).
8. The hydraulic system for a vulcanizing machine according to claim 7, characterized in that, It also includes an active oil suction pipe (12) for docking with the auxiliary cylinder port and a pressurization pipe (13) for several docking cylinder pressurization ports.