Longmen cutting machine process characteristics: in the shoe parts of the material, in addition to natural leather, but also a large number of synthetic leather, artificial leather, fiber fabrics and other materials. Because of the uniformity of these materials, the shape of the rules, punching without strict selection of materials, you can multi-layer blanking at the same time. Longmen cutting machine is designed and manufactured with the characteristics of this process. In order to meet the needs of multi-layer blanking, the shoe machinery can also be configured according to the state of the material automatic feeding mechanism, so that multi-layer materials stacked together into the table, so that a substantial increase in production efficiency. Gantry cutting machine has fixed and lift gantry type, there are manual and automatic punch type. The automatic punch model can be fixed on the punching plate, the computer control system to compile the knife on the beam in the reciprocating motion and feeding mechanism of the automatic feeding movement, in order to achieve punching automation. Automatic punching process is: punch up and down punching punch to the left (or right) to move a knife width to punch to the end of the table (or raw material), the automatic feeding of a knife-length punch to move in the opposite direction And punching. In the actual production, automatic blanking technology is less used, a lot of use is still manual feeding models.

　　The structure and performance of the gantry cutting machine is mainly composed of hydraulic transmission mechanism, cylinder synchronization mechanism, beam and punch mechanism, stroke control mechanism and so on. Hydraulic transmission mechanism is mainly composed of fuel tank, oil pump motor, electromagnetic follower valve, punching cylinder and other hydraulic components. The hydraulic control system uses the follow-up technology and the differential growth circuit, so that the power of the motor is only. Electromagnetic follower valve control four cylinders at the same time to drive the lifting beam of the punching movement. In order to ensure the consistency of the four cylinder movement, the machine set up a tooth plate synchronization mechanism. Cylinder synchronization mechanism by the four tooth plates were connected with the four cylinder piston rod, and tooth plate and each other to form a whole movement, so that the four cylinder movement regardless of the load, how to maintain the same speed, to drive The purpose of the smooth movement of the beam. The beam and punch mechanism consists of beam, cylinder piston rod, sliding punch and other components. The four cylinder piston rods are fixed at the four corners of the beam to support and drive the beam movement. Roller on the rolling bearing on the beam guide to drive around the slider slide, and the punch material for the aluminum alloy, so that the control punch light and flexible. When punching shoes, the punch on the plane and the beam guide plane and knife blade edge plane, the table plane to maintain a high degree of parallelism to ensure that the uniformity of the knife mold force and shoe punching quality The Turn the handwheel by hand to control the mechanical commutation of the electromagnetic reversing valve so that the distance between the beam and the table can be adjusted and the balance of the upper and lower oil chambers is maintained so that the beam is at the adjusted height. Stroke control mechanism by the handle and the fine-tuning button, stroke fine-tuning knob, electric control box composed of control elements. When punching, as long as the hands of the handle and the button on the beam and punch that is quickly down punching, once the blanking is completed, the beam and punch that is upward to return to the upper limit position. Fine-tuning the accuracy of the stroke to make different thickness of the shoe in the blanking when both convenient and accurate. The adjustment and use of the machine, and hydraulic swing arm cutting machine is basically the same.