2results about How to "Joint smooth" patented technology

This invention relates to the field of molding and joining equipment for plastic sheets, specifically to a far-infrared hot-melt overlapping plastic box forming device, comprising a frame, a lower pressure mold fixedly connected to the frame, and a pressing mechanism. The pressing mechanism is disposed above the lower pressure mold and can move in a direction perpendicular to the surface of the lower pressure mold to press the joint of the sheet. A first clamping mechanism and a second clamping mechanism are respectively disposed on both sides of the lower pressure mold, which are used to clamp the two sections of the sheet to be joined. This invention, by fixing the first clamping mechanism and rotatably disposing of the second clamping mechanism, uses a rotating shaft to drive the second clamping mechanism to rotate around the axis, so that the sheet held by the second clamping mechanism automatically changes its spatial posture during the rotation, and drives the unconstrained sheet to move synchronously, thereby automatically converting the sheet from the initial enclosed state to a flat enclosed state that is easy for hot-melt pressing.

This invention provides a dynamic coordinated control method and system for mode switching in methanol-electric hybrid power ships. The upper-level controller acquires real-time status information such as the ship's propeller load torque, methanol engine speed, permanent magnet synchronous motor speed, and the speed difference between the driving and driven ends of the clutch, and determines whether mode switching needs to be triggered. When switching is required, the upper-level controller generates target torques for the engine, motor, and clutch, sending the first two directly to the corresponding actuators, while sending the clutch target torque to the lower-level controller. Upon receiving the clutch target torque, the lower-level controller first calculates the clutch target oil pressure using the torque-oil pressure mapping relationship, then calculates the quasi-steady-state control current component, dynamic feedforward compensation current component, and nonlinear error feedback correction current component, respectively. Finally, the three are added together to obtain the drive current, which is output to the clutch actuator, achieving precise closed-loop control of the clutch oil pressure.