Double-station angle ring dewatering press and working method thereof

Abstract

The invention discloses a double-station angle ring dewatering press and a working method thereof.A press frame is of a gantry type frame structure, a transposition workbench is installed on the press frame through sliding blocks and sliding rails, a press lifting bottom plate is arranged on the transposition workbench, protective nets are installed at the two ends of the press frame correspondingly, and a plurality of supporting wheels are installed on the protective nets; the air cylinder is used for supporting the extending transposition workbench, one end of the air cylinder is fixed to the press frame, and the other end of the air cylinder is connected with the transposition workbench and used for driving the transposition workbench to be switched between the double stations; the hydraulic station is arranged in the protective net and connected with the hydraulic cylinder, the hydraulic cylinder is installed at the bottom of the oil cylinder lifting bottom plate, and the oil cylinder lifting bottom plate is matched with the pressing machine lifting bottom plate to drive the pressing machine lifting bottom plate to ascend and descend. By optimizing the machining process flow, adopting a single-body double-station press structure and reasonably arranging a double-station transmission system, the production efficiency and the machining quality are both considered, and the angle ring machining device is more suitable for angle ring market requirements.

Description

Technical Field

[0001] This invention belongs to the field of transformer insulation corner rings, and in particular to a dual-station corner ring dehydration press and its working method. Background Technology

[0002] Corner rings, as a primary insulating component in transformer insulation, are the core part of the insulation system. High-density cardboard corner rings, through breakthroughs in 100% pure insulating wood pulp, innovative structure (seamless curved surface), and advanced manufacturing processes (micron-level precision), have become the ultimate guarantee for the safe operation of ultra-high voltage transformers and a core benchmark for measuring the technological strength of a nation's high-end power equipment. The corner ring guides the uniform distribution of electric field lines through its physical shape, avoiding insulation breakdown caused by localized electric field concentration. Simultaneously, as part of the oil shielding structure, it optimizes the electric field distribution within the oil. It also enhances the main insulation strength, extends the creepage distance along the insulation surface at the winding ends (especially between high-voltage and low-voltage windings), prevents surface discharge or flashover, and significantly improves insulation reliability. Furthermore, it divides the oil gap barrier, separating the insulating oil gap at the winding ends into multiple short oil gaps, forming a barrier effect and effectively increasing the breakdown voltage of the oil gap. The corner ring also serves as a mechanical support and structural stabilizer, fixing and supporting the winding ends to prevent loosening or deformation of the windings due to vibration or electromagnetic forces during operation, ensuring overall structural stability.

[0003] Currently, corner rings are pressed using ordinary single-station presses, and dehydration is carried out using steam hot presses, which takes up the operating time of the hot press equipment and affects the equipment utilization rate. In addition, the paper-feeding process requires manual entry into the press area, which violates the mandatory clause of "prohibiting limbs from entering the danger zone of dynamic equipment" in the "Safety Specifications for Hazardous Operations in Industrial Enterprises". In recent years, mechanical injury accidents caused by such operations have accounted for 15%, which is a very high risk factor.

[0004] Currently, there is no dual-station press for corner ring pressing. Traditional single-station dehydration presses typically only have a single processing station, resulting in low processing efficiency, long downtime, and insufficient capacity per unit time, making it difficult to meet the cycle time requirements of modern large-scale corner ring production. Furthermore, traditional equipment often uses a single fixed connection method for components, lacking optimized design for force transmission paths. This leads to problems such as loose connections and decreased positioning accuracy after long-term operation, affecting product processing consistency. Summary of the Invention

[0005] The purpose of this invention is to provide a dual-station angle ring dehydration press and its working method, thereby solving the problem of low equipment utilization in existing technologies.

[0006] To achieve the above objectives, the present invention employs the following technical solution: A dual-station corner ring dehydration press, characterized in that it includes a press frame, a hydraulic station, a pneumatic cylinder, a hydraulic cylinder, a shifting worktable, a press lifting base plate, and a hydraulic cylinder lifting base plate; The press frame is a gantry frame structure. The shifting worktable is installed on the press frame via a slider rail. The press lifting base plate is set on the shifting worktable. Both ends of the press frame are equipped with protective nets, and several support wheels are installed on the protective nets to support the extended shifting worktable. One end of the cylinder is fixed to the press frame, and the other end of the cylinder is connected to the shifting worktable to drive the shifting worktable to switch between two workstations. The hydraulic station is located inside the protective netting. The hydraulic station is connected to the hydraulic cylinder, which is installed at the bottom of the hydraulic cylinder lifting base plate. The hydraulic cylinder lifting base plate cooperates with the press lifting base plate to drive the press lifting base plate to rise and fall.

[0007] Furthermore, a press upper platform is fixedly installed on the top of the press frame.

[0008] Furthermore, a control panel and several control buttons are provided on one side of the press frame.

[0009] Furthermore, a lifting platform limit mechanism is provided between the shifting worktable and the press lifting platform.

[0010] Furthermore, a hydraulic station motor is installed on the hydraulic station, and the hydraulic station motor is connected to the hydraulic pump inside the hydraulic station.

[0011] Furthermore, a hydraulic station valve body is installed between the oil outlet of the hydraulic station and the oil inlet of the hydraulic cylinder.

[0012] Furthermore, a linear bearing is installed at the bottom of the hydraulic cylinder lifting base plate, and the linear bearing is connected to a linear guide column.

[0013] Furthermore, drainage grooves are provided on both sides of the transposition workbench.

[0014] Furthermore, a positioning pin is installed on the top of the hydraulic cylinder lifting base plate, and the positioning pin cooperates with the bottom of the press lifting base plate.

[0015] A method for operating the dual-station angle ring dehydration press includes: Place the corner ring to be processed on the press lifting base plate of the shifting worktable. The cylinder drives the shifting worktable and the press lifting base plate to move horizontally along the slider rail. The support wheel supports the extended shifting worktable and switches to the processing station. Start the hydraulic station, and the hydraulic cylinder drives the oil cylinder to lift the base plate. Raise the press base plate to a certain height to dehydrate and press the corner ring to be processed. After dehydration and molding are completed, the hydraulic cylinder stops working, the press lifting base plate descends, and the cylinder drives the shifting worktable and the press lifting base plate to move back to the first station, completing one cycle. At the same time, the next station with the corner ring to be processed is switched to the processing station, ready for the next dehydration and molding.

[0016] Compared with the prior art, the present invention has the following beneficial effects: This invention provides a dual-station angle ring dehydration press. By setting the press frame as a gantry frame structure, it possesses high strength and stability, capable of withstanding large pressures and loads, providing a solid and reliable support foundation for the entire press operation. This ensures that the equipment will not deform or be damaged due to stress during the dehydration and pressing process, guaranteeing long-term stable operation. The switching worktable is mounted on the press frame via a slider rail, ensuring smooth and stable switching between the two stations. The press lifting base plate is placed on the switching worktable, and protective nets are installed at both ends of the press frame. Several support wheels are installed on the protective nets to support the extended switching worktable, enhancing its stability in the extended state and preventing tilting or shaking due to uneven force. One end of a cylinder is fixed to the press frame, and the other end is connected to the switching worktable to drive it to switch between the two stations. The hydraulic station is located within the protective net, saving space and protecting the hydraulic station. The hydraulic station connects to a hydraulic cylinder, which is installed at the bottom of the cylinder lifting base plate. The cylinder lifting base plate cooperates with the press lifting base plate, driving the press lifting base plate to rise and fall. The hydraulic transmission method can provide greater pressure to meet the pressure requirements during the corner ring dehydration pressing process. Simultaneously, the lifting speed and pressure of the press lifting base plate can be precisely controlled according to different process requirements. This invention optimizes the processing flow, adopts a single-unit dual-station press structure, and rationally arranges the dual-station transmission system, making the equipment compact and saving floor space. It achieves continuous, high-precision dehydration pressing of corner rings, improving pressing efficiency while ensuring product quality, increasing speed, improving equipment utilization, reducing equipment waste, and increasing output. It produces high-quality, high-performance products, balancing production efficiency and processing quality, better meeting the needs of the corner ring market, and filling the gap in specialized processing equipment for transformer insulation corner rings. At the same time, it reduces manual operation and lowers the safety risks for workers.

[0017] This invention also provides a working method for a dual-station corner ring dehydration press. The corner ring to be processed is placed on the press lifting base plate of the switching worktable. A cylinder drives the switching worktable and the press lifting base plate horizontally along the slider rail. Support wheels support the extended switching worktable, switching to the processing station. The hydraulic station is activated, and the hydraulic cylinder drives the oil cylinder lifting base plate to rise, raising the press lifting base plate to a certain height for dehydration and forming of the corner ring. After dehydration and forming, the hydraulic cylinder stops working, the press lifting base plate descends, and the cylinder drives the switching worktable and the press lifting base plate back to the first station, completing one cycle. Simultaneously, the next station with a corner ring to be processed is switched to the processing station, preparing for the next dehydration and forming. This invention switches between two stations by using a cylinder to drive the switching worktable and the press lifting base plate. When a corner ring is undergoing dehydration and forming at one station, preparation work for placing a corner ring can be carried out simultaneously at the other station. This alternating operation mode significantly reduces equipment idle time, achieves continuous production, and enables the completion of more dehydration and pressing tasks for corner rings per unit time, thereby significantly improving overall production efficiency. After completing one dehydration and pressing cycle, the cylinder can quickly move the switching worktable and press lifting base plate back to the original position, while simultaneously switching the next waiting workstation to the processing position, ready for the next operation. The entire cycle is smooth and fast, further shortening the production cycle and enabling the equipment to produce more products in a shorter time, meeting the needs of large-scale production. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is an isometric view of the dual-station angle ring dehydration press of the present invention.

[0020] Figure 2 This is a top view of the dual-station angle ring dehydration press of the present invention.

[0021] Figure 3 This is a front view of the dual-station angle ring dehydration press of the present invention.

[0022] Figure 4 This is a right view of the dual-station angle ring dehydration press of the present invention.

[0023] Figure 5 This is an internal sectional view of the dual-station angle ring dehydration press of the present invention.

[0024] The components are: 1-press frame, 2-control panel, 3-control buttons, 4-support wheels, 5-hydraulic station motor, 6-hydraulic station, 7-hydraulic station valve body, 8-protective net, 9-cylinder, 10-hydraulic cylinder, 11-linear guide column, 12-shifting worktable, 13-press upper platform, 14-press lifting base plate, 15-oil cylinder lifting base plate, 16-lifting base plate limit mechanism, 17-slider slide rail, 18-positioning pin, 19-linear bearing, 20-drainage trough. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0030] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0031] The present invention will now be described in further detail with reference to the accompanying drawings: See Figure 1 This invention provides a dual-station angle ring dehydration press, comprising a press frame 1, a control panel 2, control buttons 3, support wheels 4, a hydraulic station motor 5, a hydraulic station 6, a hydraulic station valve body 7, a protective net 8, a cylinder 9, a hydraulic cylinder 10, a linear guide column 11, a shifting worktable 12, a press upper platform 13, a press lifting base plate 14, a hydraulic cylinder lifting base plate 15, a lifting base plate limiting mechanism 16, a slider rail 17, a positioning pin 18, a linear bearing 19, and a drainage groove 20.

[0032] The press frame 1 is the core supporting structure of the entire equipment. It is a gantry-type frame structure made of Q235B high-strength carbon structural steel using a full-penetration welding process. It includes left and right side columns and a top beam. The columns have a rectangular hollow cross-section, and triangular reinforcing ribs are installed at the connection points between the beams and columns to ensure overall rigidity and resistance to deformation. The press frame 1 is placed vertically on the ground, and its side columns are fixed to the ground with expansion bolts to ensure no displacement during operation. The press upper platform 13 is horizontally fixed below the top beam of the press frame 1, providing a mounting base for the top components.

[0033] The control panel 2 is located on one side of the press frame 1, integrating various control buttons 3 and a display device. Operators can input processing parameters, start and stop the equipment, and monitor its operating status in real time, such as pressure and displacement parameters, through the control panel 2. The control buttons 3, including start, stop, and emergency stop buttons, are installed on the control panel 2 and the side of the equipment. These buttons enable manual control of the equipment. In case of abnormal conditions, operators can quickly stop the equipment using the emergency stop button, ensuring the safety of both the equipment and personnel.

[0034] like Figure 5As shown, the shifting worktable 12 is mounted on the press frame 1 via a slider rail 17. It is used to place the corner rings to be processed and those already processed. Driven by the cylinder 9, the shifting worktable 12 can switch between two workstations, improving processing efficiency. The slider rail 17 is installed on both sides of the press frame 1 to support the shifting worktable 12 and guide its movement, ensuring smooth and stable movement. A press lifting base plate 14 is installed on the shifting worktable 12. The press lifting base plate 14 can move in both horizontal and vertical directions and is positioned relative to the shifting worktable 12 by a lifting base plate limiting mechanism 16. The press lifting base plate 14 serves as the working platform for the dehydration and forming of the corner rings. The corner rings are placed on the press lifting base plate 14 to complete the dehydration and forming process. A lifting base plate limiting mechanism 16 is installed between the shifting worktable 12 and the press lifting base plate 14 to limit the movement stroke of the press lifting base plate 14, preventing excessive movement that could damage the equipment or affect processing quality. Drainage grooves 20 are provided on both sides of the shifting worktable 12 to collect the water discharged from the corner rings during the dehydration and pressing process, keeping the working environment of the equipment clean.

[0035] like Figure 3 As shown, one end of the cylinder 9 is fixed on the press frame 1, and the other end is connected to the shifting table 12. The cylinder 9 drags the shifting table 12 and simultaneously drives the press lifting base plate 14 to move horizontally, realizing the switching between two workstations. Its structure is compact and its action is rapid. It can quickly transport the corner ring to be processed to the processing station, or move the processed corner ring out of the processing station, thereby improving processing efficiency.

[0036] Protective nets 8 are installed at both ends of the press frame 1 to prevent operators from accidentally contacting the moving parts of the equipment, ensuring operator safety. They also prevent external debris from entering the equipment and affecting its normal operation. Several support wheels 4 are installed on the protective nets 8 to support the extended shifting table 12, facilitating its movement and positioning. Figure 2 As shown, the hydraulic station 6 is located within the protective net 8 and is used to store hydraulic oil, regulate the pressure and flow of the hydraulic oil, provide stable hydraulic power to the hydraulic cylinder, and ensure that the hydraulic cylinder can output stable pressure during operation. A hydraulic station motor 5 is installed on the hydraulic station 6, providing power to drive the hydraulic pump, converting electrical energy into hydraulic energy, and providing a high-pressure oil source for the hydraulic cylinder 10 and other actuators, thus serving as the power source for the hydraulic system.

[0037] like Figure 4As shown, the hydraulic cylinder 10 is installed at the bottom of the hydraulic cylinder lifting base plate 15. Through the high-pressure oil supplied by the hydraulic station 6, the hydraulic cylinder 10 can output strong pressure, driving the hydraulic cylinder lifting base plate 15 to move upwards. A positioning pin 18 is provided on the top of the hydraulic cylinder lifting base plate 15. The positioning pin 18 is used for positioning the hydraulic cylinder lifting base plate 15 and the press lifting base plate 14. When the hydraulic cylinder 10 rises, it drives the hydraulic cylinder lifting base plate 15 to rise. The positioning pin 18 is inserted into the press lifting base plate 14 for precise positioning, raising the press lifting base plate 14 to a certain height, where the corner ring is pressed using a corner ring mold. The hydraulic station valve body 7 is installed between the oil outlet of the hydraulic station 6 and the oil inlet of the hydraulic cylinder 10. It includes various directional valves, relief valves, throttle valves, etc., used to control the flow direction, pressure, and flow rate of the hydraulic oil, realizing the extension, retraction, and pressure holding actions of the hydraulic cylinder 10. It is the control core of the hydraulic system.

[0038] A linear bearing 19 is provided at the bottom of the hydraulic cylinder lifting base plate 15. The linear bearing 19 is connected to the linear guide post 11. The linear guide post 11 guides the movement direction of the hydraulic cylinder lifting base plate 15, ensuring that the hydraulic cylinder lifting base plate 15 maintains linear movement during the up and down movement, thereby improving the accuracy of dehydration and pressing.

[0039] The operating method of the dual-station angle ring dehydration press of the present invention includes: 1. Preparation: The operator first checks whether all components of the equipment are normal, including whether the press frame 1 is stable, whether the control panel 2 and control buttons 3 are working properly, whether there are any oil leaks or abnormalities in the actuators such as cylinder 9 and hydraulic cylinder 10, whether the protective net 8 is intact, whether the support wheels 4 can rotate normally, and whether the hydraulic oil in the hydraulic station 6 is sufficient. Input the processing parameters, such as pressure and displacement, through the control panel 2, and set appropriate dehydration and pressing parameters according to the size of the corner rings, the number of pressings, and the specifications.

[0040] 2. Corner Ring Placement: Observe the current position of the shift table 12 and select an empty position to place the corner ring to be processed. Place the corner ring to be processed stably on the corresponding press lifting base plate 14 on the shift table 12, ensuring that the corner ring is placed accurately and does not affect subsequent processing.

[0041] 3. Dual-station switching and positioning: The operator presses the start button on the control panel 2 or the side of the equipment to activate cylinder 9. Cylinder 9 drags the switching worktable 12 and the press lifting base plate 14 horizontally. The slider rail 17 guides the switching worktable 12 and the press lifting base plate 14 to move smoothly and steadily, switching the worktable with the corner ring to be processed to the processing worktable. The support wheels 4 on the protective net 8 support the extended switching worktable 12, assisting its movement and positioning, ensuring that the switching worktable 12 and the press lifting base plate 14 accurately reach the processing position.

[0042] 4. Dehydration and Pressing: The hydraulic station motor 5 is activated via control panel 2. Motor 5 drives the hydraulic pump, converting electrical energy into hydraulic energy to power hydraulic station 6. Hydraulic station 6 stores and regulates the pressure and flow of hydraulic oil, providing stable hydraulic power to hydraulic cylinder 10. The high-pressure oil supplied by hydraulic station 6 enters hydraulic cylinder 10 after its flow direction, pressure, and flow are controlled by hydraulic station valve body 7. Hydraulic cylinder 10 outputs strong pressure, driving the cylinder lifting base plate 15 upwards. Positioning pins 18 on the cylinder lifting base plate 15 are inserted into the press lifting base plate 14 for precise positioning. Linear guide columns 11 guide the movement direction of the cylinder lifting base plate 15, ensuring it maintains linear movement during its up-and-down motion, raising the press lifting base plate 14 to a certain height. The pressure and pressing time are adjusted according to the set process parameters for dehydration and pressing.

[0043] 5. Moisture Collection and Station Reset: During the dehydration and pressing process, the moisture discharged from the corner rings flows into the drainage trough 20, keeping the equipment's working environment clean. After the set pressing time is completed, press the stop button to stop the hydraulic cylinder 10, causing it and the press lifting base plate 14 to descend. Restart the cylinder 9, which moves the shifting worktable 12 and the press lifting base plate 14 back to the first station, completing one cycle. Simultaneously, switch the other station containing the corner rings to be processed to the processing station, preparing for the next processing cycle.

[0044] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A double station angle ring dewatering press characterized by, It comprises a press frame (1), a hydraulic station (6), a cylinder (9), a hydraulic cylinder (10), a transposition workbench (12), a press lifting bottom plate (14) and an oil cylinder lifting bottom plate (15). The press frame (1) is a gantry frame structure, the transposition workbench (12) is installed on the press frame (1) through a sliding block sliding rail (17), the press lifting bottom plate (14) is arranged on the transposition workbench (12), both ends of the press frame (1) are provided with protective nets (8), a plurality of supporting wheels (4) are arranged on the protective nets (8) and used for supporting the extended transposition workbench (12), one end of the cylinder (9) is fixed on the press frame (1), the other end of the cylinder (9) is connected with the transposition workbench (12) and used for driving the transposition workbench (12) to switch between the double stations. The hydraulic station (6) is arranged in the protective net (8), the hydraulic station (6) is connected with the hydraulic cylinder (10), the hydraulic cylinder (10) is arranged at the bottom of the oil cylinder lifting bottom plate (15), and the oil cylinder lifting bottom plate (15) cooperates with the press lifting bottom plate (14) and drives the press lifting bottom plate (14) to lift.

2. A double-station angular ring dewatering press according to claim 1, characterized in that, The top of the press frame (1) is fixedly provided with a press upper plate (13).

3. A double-station angular ring dewatering press according to claim 1, characterized in that, One side of the press frame (1) is provided with a control panel (2) and a plurality of control buttons (3).

4. A double-station angular ring dewatering press according to claim 1, characterized in that, A lifting bottom plate limiting mechanism (16) is arranged between the transposition workbench (12) and the press lifting bottom plate (14).

5. A double-station angular ring dewatering press according to claim 1, wherein, The hydraulic station (6) is provided with a hydraulic station motor (5), and the hydraulic station motor (5) is connected with a hydraulic pump in the hydraulic station (6).

6. A double-station angular ring dewatering press according to claim 1, wherein, A hydraulic station valve body (7) is arranged between the oil outlet of the hydraulic station (6) and the oil inlet of the hydraulic cylinder (10).

7. A double-station angular ring dewatering press according to claim 1, wherein, The bottom of the oil cylinder lifting bottom plate (15) is provided with a linear bearing (19), and the linear bearing (19) is connected with a linear guide column (11).

8. A double-station angular ring dewatering press according to claim 1, wherein, Drainage grooves (20) are formed in the two sides of the transposition workbench (12).

9. A double-station angular ring dewatering press according to claim 1, wherein, The top of the oil cylinder lifting bottom plate (15) is provided with a positioning pin (18), and the positioning pin (18) cooperates with the bottom of the press lifting bottom plate (14).

10. A method of operating a double-station angular ring dewatering press according to any one of claims 1 to 9, characterized in that, It comprises: The angle ring to be processed is placed on the press lifting bottom plate (14) of the transposition workbench (12), the cylinder (9) drags the transposition workbench (12) and the press lifting bottom plate (14) to move horizontally along the sliding block sliding rail (17), the supporting wheel (4) supports the extended transposition workbench (12), and the processing station is switched to; The hydraulic station (6) is started, the hydraulic cylinder (10) drives the oil cylinder lifting bottom plate (15) to rise, the press lifting bottom plate (14) is lifted to a certain height, and the angle ring to be processed is dehydrated and pressed; After the dehydration and pressing are completed, the hydraulic cylinder (10) stops working, the press lifting bottom plate (14) is lowered, the cylinder (9) drives the transposition workbench (12) and the press lifting bottom plate (14) to move back to the first station, one cycle is completed, and at the same time, the next station provided with the angle ring to be processed is switched to the processing station, and is prepared for the next dehydration and pressing.

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