4results about How to "Reduce springback" patented technology

This utility model discloses an anti-counterfeiting layer thickness adjustment molding structure for anti-counterfeiting paper, including a base plate, an upper template, a lower template, and an adjuster. A bracket is installed on the base plate, and a pressure plate is connected to the upper end of the bracket via a first hydraulic cylinder. The pressure plate is slidably connected to the bracket. The upper template is connected to the pressure plate, and a convex template is inserted into the upper template. The lower template is installed on the surface of the base plate, and a concave template is inserted into the lower template. Two sets of adjusters are provided and connected to the convex and concave templates respectively. When the paper is placed on the lower template, the positions of the convex and concave templates are adjusted based on the paper thickness and material. The second hydraulic cylinder controls the movement of the convex and concave templates, so that the protrusion length of the convex template on the upper template corresponds to the concave amplitude of the concave template on the lower template. The convex and concave templates press the paper, eliminating the need to replace the upper and lower templates, facilitating continuous pressing of different types of paper, and improving efficiency.

The utility model relates to an angle steel bending machine, and relates to the technical field of angle steel machining equipment.The angle steel bending machine comprises a machining table, the upper end face of the machining table is rotationally connected with two limiting discs, an abutting block is arranged between the two limiting discs, a hydraulic cylinder is installed on the machining table, and a piston rod of the hydraulic cylinder is fixedly connected with the abutting block; the telescopic direction of the hydraulic cylinder is perpendicular to the connecting line between the circle centers of the two limiting discs, a resistance heating block used for being connected with angle steel in an abutting mode is arranged above the abutting block, and a lifting assembly used for driving the resistance heating block to ascend and descend is arranged on the machining table. The angle steel bending device can improve the angle steel bending effect.

The invention provides an electric valve which comprises a rotor assembly and a rod component, the rotor assembly can drive the rod component to act, the electric valve further comprises a stop structure and a stop part, the stop structure is in threaded fit with the rod component, the electric valve further comprises an anti-rotation structure, the anti-rotation structure can limit rotation of the stop structure, and the stop part is fixedly connected with the rod component. The stop structure comprises a first stop part and a second stop part, the stop part comprises a stop boss, the first stop part can abut against the stop boss to achieve lower stop, the second stop part can abut against the stop boss to achieve upper stop, and circumferential rotation of the stop structure can be limited through the arrangement of the anti-rotation structure. Therefore, the springback phenomenon generated when the stopping structure abuts against the stopping part for stopping is reduced.