Dynamic error control and compensation mechanism of bipolar plate press

Abstract

The utility model relates to the technical field of bipolar plate press machines, in particular to a dynamic error control and compensation mechanism of a bipolar plate press machine, which comprises a main servo motor direct drive transmission gear shaft and a driven eccentric gear, a connecting rod mechanism adopts a toggle rod type structure and comprises a connecting rod, a corner bracket and a lower connecting rod, and the lower connecting rod is connected with a sliding block adjusting screw rod. A sliding block adjusting servo motor drives a worm and a worm gear transmission mechanism, an adjusting nut structure is arranged in a worm gear and forms a connecting pair with an adjusting screw rod, the worm gear rotates to drive the sliding block adjusting screw rod to move up and down so as to adjust the die height of the sliding block, and the sliding block is provided with an inductance type linear displacement sensor. The main servo motor and the sliding block adjusting servo motor are connected with the displacement sensor through the PLC, the mold closing speed and the mold closing position of the mold are monitored and accurately controlled in real time, high-precision adjustment of mold closing of the mold is achieved, and the position of a bottom dead center can be accurately controlled and compensated in real time.

Description

Technical Field

[0001] This utility model relates to the field of bipolar plate press technology, and in particular to a dynamic error control and compensation mechanism for bipolar plate presses. Background Technology

[0002] The dynamic error control and compensation mechanism of the bipolar plate press effectively reduces dynamic errors in the production process through real-time monitoring, feedback adjustment and compensation, improves the forming accuracy and quality consistency of bipolar plates, adapts to the requirements of different materials and processes, and ensures stable operation and long service life of the equipment.

[0003] Metal bipolar plates are one of the core components in hydrogen fuel cells. Their mass production often adopts stamping forming. Elbow-type servo presses are commonly used stamping equipment in this field. However, existing bipolar plate presses are inconvenient to achieve the forming requirements during the stamping process, and it is also difficult to monitor and accurately control the mold closing speed and position. The position of the bottom dead center is also difficult to control accurately and compensate in real time. In order to solve the aforementioned problems, a dynamic error control and compensation mechanism for bipolar plate presses is provided. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing the following technical solution: a dynamic error control and compensation mechanism for a bipolar plate press, comprising a main servo motor, the output end of which is connected to a main drive gear shaft, the top end of which is meshed with a driven eccentric gear, a connecting rod in the middle of which is connected to a bracket at one end, a lower connecting rod at one end of which is connected to a lower connecting rod, a slider adjusting screw installed at the bottom end of which is fitted with a worm gear on its periphery, a worm gear meshing with one side of which is connected to a worm, and a slider adjusting servo motor at one end of which is connected to a worm gear.

[0005] As an improvement to the above technical solution, an inductive linear displacement sensor is fastened to one end of the slider adjusting screw, and the bottom end of the inductive linear displacement sensor is connected to one side of the bipolar plate press body.

[0006] As an improvement to the above technical solution, the threads of the main drive gear shaft and the driven eccentric gear are matched, and the threads of the worm gear and the worm are matched.

[0007] As an improvement to the above technical solution, the main servo motor and the slider adjusting screw are connected to the linear displacement sensor through a PLC controller.

[0008] As an improvement to the above technical solution, the driven eccentric gear is a double helical gear structure, the large end of the connecting rod is connected to the driven eccentric gear through an eccentric body, the small end of the connecting rod is connected to the angle bracket through a first pin, the large end of the lower connecting rod is connected to the angle bracket through a second pin, and the small end of the lower connecting rod is connected to the slider adjusting screw through a third pin.

[0009] The beneficial effects of this utility model are as follows: the main servo motor and the slider adjustment servo motor are connected to the displacement sensor through the PLC controller, which monitors and controls the mold closing speed and position in real time, realizing high-precision adjustment of mold closing, and enabling precise control and real-time compensation of the bottom dead center position. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the main structure of the dynamic error control and compensation mechanism of the bipolar plate press of this utility model;

[0011] Figure 2 This is a side view of the dynamic error control and compensation mechanism of the bipolar plate press of this utility model.

[0012] Figure 3 This is a top view of the dynamic error control and compensation mechanism of the bipolar plate press of this utility model.

[0013] Figure 4 The dynamic error control and compensation mechanism of the bipolar plate press of this utility model is located in Figure 3 A schematic diagram of the cross-sectional structure at point A.

[0014] Reference numerals in the attached diagram: 1. Main servo motor; 2. Main drive gear shaft; 3. Driven eccentric gear; 4. Connecting rod; 5. Angle bracket; 6. Lower connecting rod; 7. Slider adjusting screw; 8. Slider adjusting servo motor; 9. Worm gear; 10. Worm wheel; 11. Inductive linear displacement sensor. Detailed Implementation

[0015] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0016] See appendix Figure 1-4As shown, a dynamic error control and compensation mechanism for a bipolar plate press is provided to solve the above problems. This mechanism includes a main servo motor 1, with a main drive gear shaft 2 connected to the output end of the main servo motor 1. A driven eccentric gear 3 is meshed with the top end of the main drive gear shaft 2. A connecting rod 4 is located in the middle of the driven eccentric gear 3. A bracket 5 is fastened to one end of the connecting rod 4, and a lower connecting rod 6 is fastened to one end of the bracket 5. A slider adjusting screw 7 is installed at the bottom end of the connecting rod 4. A worm gear 10 is sleeved around the circumference of the slider adjusting screw 7. A worm 9 is meshed with one side of the worm gear 10, and a slider adjusting servo motor 8 is connected to one end of the worm 9.

[0017] The main servo motor 1 is the power source, which drives the main drive gear shaft 2 to rotate by outputting power. Through the meshing of the main drive gear shaft 2 and the driven eccentric gear 3, the rotational motion can be transmitted to the driven eccentric gear 3. This gear transmission method can accurately transmit power, and the rotational speed of the driven eccentric gear 3 can be controlled by adjusting parameters such as the speed of the main servo motor 1. The connecting rod 4 in the middle of the driven eccentric gear 3 converts the rotational motion of the eccentric gear into linear motion. When the driven eccentric gear 3 rotates, one end of the connecting rod 4 will move up and down linearly with the change of eccentricity. This motion conversion plays a key role in the operation of the press. The angle bracket 5, which is fastened to one end of the connecting rod 4, serves the function of connection and force transmission. The angle bracket 5 transmits the force of the connecting rod 4 to the lower connecting rod 6, so that the force can be transmitted to the working part of the press along a specific path. This connection method This design ensures effective force transmission and, through reasonable structural design, allows for uniform force distribution on the working components, contributing to improved bipolar plate pressing quality. The worm gear 10 sleeved around the slider adjusting screw 7 and the meshing worm 9 constitute the worm gear 10-worm 9 transmission mechanism. The slider adjusting servo motor 8 drives the worm 9 to rotate, which in turn drives the worm gear 10 to rotate, thereby rotating the slider adjusting screw 7. This worm gear 10-worm 9 transmission method is self-locking, enabling precise adjustment of the slider position and allowing for fixing the slider position when needed. This achieves high-precision control of the slider position during bipolar plate pressing, playing a crucial role in compensating for dynamic errors during the pressing process. If uneven pressing force is found due to uneven material thickness during bipolar plate pressing, this error can be compensated by adjusting the slider position, thus improving the quality of the bipolar plate.

[0018] To improve the dynamic error control and compensation mechanism of the bipolar plate press, please refer to [the relevant documentation / reference]. Figure 1-4 Specifically, one end of the slider adjusting screw 7 is fastened to an inductive linear displacement sensor 11, and the bottom end of the inductive linear displacement sensor 11 is connected to one side of the bipolar plate press body.

[0019] The inductive linear displacement sensor 11 is fastened to one end of the slider adjusting screw 7, enabling real-time monitoring of the linear displacement of the slider adjusting screw 7. During the operation of the bipolar plate press, the position change of the slider is crucial for the pressing effect and dynamic error control. The inductive linear displacement sensor 11 can accurately obtain the slider position information. Its measurement principle is based on the phenomenon of electromagnetic induction. The bottom end of the inductive linear displacement sensor 11 is connected to one side of the bipolar plate press body, which provides it with a stable installation foundation. At the same time, this connection method allows the sensor to better transmit the monitored displacement data to the press control system.

[0020] To improve the dynamic error control and compensation mechanism of the bipolar plate press, please refer to [the relevant documentation / reference]. Figure 1-4 Specifically, the threads of the main drive gear shaft 2 and the driven eccentric gear 3 are matched, and the threads of the worm gear 10 and the worm 9 are matched.

[0021] When the main servo motor 1 drives the main drive gear shaft 2 to rotate, the threads of the main drive gear shaft 2 and the driven eccentric gear 3 are matched, ensuring that the power is transmitted to the driven eccentric gear 3 in a precise manner. This precise transmission method can effectively reduce power loss and vibration caused by loose gear fit or excessive clearance. During the operation of the bipolar plate press, precise power transmission helps maintain a stable pressing speed and pressure, avoiding a decrease in bipolar plate pressing quality due to unstable power transmission. The thread matching of the worm gear 10 and the worm 9 makes the transmission between them smoother and more reliable. In the working environment of the bipolar plate press, it may be affected by various vibrations and impacts. This stable transmission method can reduce the interference of external factors on the slider adjustment mechanism, ensure the accuracy and timeliness of slider adjustment, and thus enhance the mechanical stability of the entire bipolar plate press dynamic error control and compensation mechanism.

[0022] To improve the dynamic error control and compensation mechanism of the bipolar plate press, please refer to [the relevant documentation / reference]. Figure 1-4 Specifically, the main servo motor 1 and the slider adjusting screw 7 are connected to the inductive linear displacement sensor 11 through the PLC controller.

[0023] The inductive linear displacement sensor 11 can monitor the displacement of the slider adjusting screw 7 in real time. By connecting to the PLC controller, the displacement sensor can transmit the collected displacement data to the PLC controller. This data is crucial for the dynamic error control of the bipolar plate press. For example, during the bipolar plate pressing process, changes in the slider position may cause uneven pressing force. By accurately measuring the changes in the slider position through the inductive linear displacement sensor 11 and feeding the data back to the PLC controller, the PLC controller can accurately understand the real-time position status of the slider.

[0024] To improve the dynamic error control and compensation mechanism of the bipolar plate press, please refer to [the relevant documentation / reference]. Figure 1-4 Specifically, the driven eccentric gear 3 is a double helical gear structure. The large end of the connecting rod 4 is connected to the driven eccentric gear 3 through an eccentric body. The small end of the connecting rod 4 is connected to the bracket 5 through a first pin. The large end of the lower connecting rod 6 is connected to the bracket 5 through a second pin. The small end of the lower connecting rod 6 is connected to the slider adjusting screw 7 through a third pin.

[0025] The large end of connecting rod 4 is connected to the driven eccentric gear 3 via an eccentric body. This eccentric connection is key to converting rotary motion into linear motion. When the driven eccentric gear 3 rotates, due to the presence of the eccentric body, the large end of connecting rod 4 will perform circular motion around the eccentric center, while the small end of connecting rod 4 will convert this circular motion into linear motion. This provides the bipolar plate press with the vertical linear force required to press the bipolar plates, allowing the bipolar plates to be effectively pressed under the action of the press. The small end of connecting rod 4 is connected to the angle bracket 5 via a first pin. This pin connection allows for relatively flexible rotation between connecting rod 4 and angle bracket 5. During the operation of the bipolar plate press, when connecting rod 4 performs linear motion, the first pin can adapt to the angle changes caused by this motion and effectively transmit force. This ensures that the force transmission process from connecting rod 4 to angle bracket 5 is both stable and flexible, without additional stress concentration or obstruction of movement due to rigid connections between components. The lower connecting rod 6... The end of the lower connecting rod 6 is connected to the corner bracket 5 via a second pin, which also plays a role in flexibly transmitting force. In the entire force transmission chain, the corner bracket 5 acts as a transition and force distribution mechanism. The second pin allows for smooth force transmission between the corner bracket 5 and the lower connecting rod 6, and can adapt to forces in different directions, ensuring that there is no jamming or loss of force during the transmission from the corner bracket 5 to the lower connecting rod 6. The small end of the lower connecting rod 6 is connected to the slider adjusting screw 7 via a third pin. This is the last link in transmitting force to the slider adjusting screw 7. The third pin ensures that the lower connecting rod 6 can accurately transmit force to the slider adjusting screw 7, and can cooperate with the slider adjusting screw 7 when it is adjusted in position (e.g., to compensate for errors in the bipolar plate pressing process), making the entire force transmission and adjustment process more coordinated and stable. This connection method allows the bipolar plate press to precisely control the position of the slider adjusting screw 7, thereby better controlling the pressing force and compensating for dynamic errors.

[0026] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A dynamic error control and compensation mechanism for a bipolar plate press, characterized in that, Includes a main servo motor (1), the output end of which is connected to a main drive gear shaft (2), the top end of which is meshed with a driven eccentric gear (3), a connecting rod (4) is provided in the middle of the driven eccentric gear (3), one end of which is fastened to a bracket (5), one end of which is fastened to a lower connecting rod (6), a slider adjusting screw (7) is installed at the bottom end of the connecting rod (4), a worm gear (10) is sleeved on the periphery of the slider adjusting screw (7), a worm (9) is meshed on one side of the worm gear (10), and one end of the worm (9) is connected to a slider adjusting servo motor (8).

2. The dynamic error control and compensation mechanism for the bipolar plate press according to claim 1, characterized in that: One end of the slider adjusting screw (7) is fastened to an inductive linear displacement sensor (11), and the bottom end of the inductive linear displacement sensor (11) is connected to one side of the bipolar plate press body.

3. The dynamic error control and compensation mechanism for the bipolar plate press according to claim 1, characterized in that: The threads of the main drive gear shaft (2) and the driven eccentric gear (3) are matched, and the threads of the worm wheel (10) and the worm (9) are matched.

4. The dynamic error control and compensation mechanism for the bipolar plate press according to claim 3, characterized in that: The main servo motor (1) and the slider adjusting screw (7) are connected to the linear displacement sensor (11) through a PLC controller.

5. The dynamic error control and compensation mechanism for the bipolar plate press according to claim 3, characterized in that: The driven eccentric gear (3) is a double helical gear structure. The large end of the connecting rod (4) is connected to the driven eccentric gear (3) through an eccentric body. The small end of the connecting rod (4) is connected to the bracket (5) through a first pin. The large end of the lower connecting rod (6) is connected to the bracket (5) through a second pin. The small end of the lower connecting rod (6) is connected to the slider adjusting screw (7) through a third pin.

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