The design and application of bending machine pallet wheel frame

The design and application of bending machine pallet wheel frame

Bending machine pallet wheel frame structure design: need to be economic and practical, the structure follows the existing pallet track, can ensure its straightness in the sliding process.

(1) Pallet wheel frame assembly pallet wheel frame consists of 45 round steel rollers, set on the top of the pallet wheel frame, higher than the support beam on both sides, the rollers are connected by bearings, free movement, plate material pushing light and fast, largely reducing the physical strength of the operator.

(2) The bracket assembly mainly plays the role of placing the plate material support, the design is considered to be able to place more than 10 pieces of plate material at the same time, and has sufficient strength, using rectangular tube frame structure, can reduce the deformation of long time high load operation, in the bending process to facilitate the operator to operate continuously, reduce the lifting time of the plate, improve production efficiency.

(3) Walking wheel assembly This mechanism is connected to the ground guide rail through rollers, and the guide rail is set to ensure that the pallet wheel frame travels along a straight line parallel to the bending machine, and the two pallet wheel frames can be freely moved and adjusted according to the length of the plate material to adapt to the bending needs of different lengths of plate material.

Bending machine pallet wheel frame adopts screw and tie rod mechanical transmission technology, pallet wheel frame in the use of the process, to ensure that the pallet and the lower mold flush with the upper plane. In the use of different heights of the mold need to raise or lower the pallet wheel frame, by triggering the rotating hand wheel, the rotating hand wheel and the left and right rotary screw coupling in the middle position, the left and right rotary screw using the left and right rotary thread, respectively, with the left rotary thread nut and right rotary thread nut, the left and right rotary thread nut and the pallet wheel frame lift tie rod coupling, in the rotation of the rotating hand wheel through the left and right rotary screw rotary thread drive the left and right rotary thread In the process of rotating the handwheel, the left and right rotating threads are driven by the left and right rotating threads through the left and right rotating screw.

CNC bending machine slider power is insufficient to cause slow return causes

(1) The slider goes down quickly. Solenoid energized, the hydraulic pump output pressure oil through the valve into the control chamber of the hydraulic control check valve will open it, the hydraulic cylinder lower cavity of the oil will flow back to the tank through the valve and throttle valve, the other way back to the tank, the slider under the action of self-weight fast downward hydraulic cylinder upper cavity empty volume by the tank of oil through the supplement, at this time the slider speed by the valve to adjust the connection.

(2) slider deceleration. When the slider down to the upper die close to be bent plate material, the travel switch sends a signal to energize the solenoid, so that the valve closes, the hydraulic cylinder lower cavity oil discharge back to the tank, after the energization, so that the pump output pressure oil through the hydraulic control chamber will be valve reversal, at the same time, due to the energization, so that the pressure of the hydraulic cylinder upper cavity pressure oil rises, the right position of the check valve to disconnect the hydraulic cylinder upper cavity and the tank. In this way, the downward movement of the hydraulic cylinder is only driven by the pump output through the valve into the upper chamber, and the movement speed of the slider can be adjusted.

(3) Unloading pressure. After the hydraulic bending machine work is completed, in the instantaneous return of the slider upward, through the electrical system first electromagnet disconnection 2s, in this period of time, due to power failure, valve reset, relief valve can open, so that the pressure of the upper chamber of the hydraulic cylinder down to achieve pre-pressure relief.

(4) Pressurization. The working position of the solenoid and valve remain unchanged, and the pressure in the upper chamber of the hydraulic cylinder rises gradually as the deformation resistance of the plate material increases until the ram runs to a predetermined position.

(5) Slider return. After the pressure is removed, the solenoid valve is de-energized and energized, the pressure oil output from the hydraulic pump enters the lower chamber of the hydraulic cylinder to push the slider upward, and the oil in the upper chamber of the hydraulic cylinder flows back to the tank through the valve. The liquid pressure during the return stroke can be adjusted by the relief valve.