How To Repair The Malfunction Of The Cutting Machine

China's current manufacturing enterprises Cutting machine A cam is arranged at the end part of the motor spindle, and a connecting rod is arranged on the eccentric shaft of the cam. When the motor is rotated, the connecting rod drives the slide block, so that the blade fixed on the slide block moves straight and reciprocally, thereby achieving two functions of cutting and cutting. The overall operation of the grinder system is that the friction wheel is attached to the outer side of the cam, and the power transmission of the shaft gear in the friction wheel is carried out; one drives the two sets of annular abrasive belts around the sharpener to rotate, and the other drives the bidirectional screw to cause the sharpening device to move up and down. The gear of friction wheel must bear two loads of power.

The grinder system designed by foreign countries has reached the limit, and 174 complex and precise parts have been designed in the narrow motor shell. Due to the tight structure of parts, there are high requirements for the manufacturing process of parts. It is understood that enterprises in China generally only process motors, knives and chassis. Almost all the precision parts in the sharpening mechanism are purchased. It is clear that the faults of the cutting machines are often on the parts purchased, and the importance of the most critical quality assurance is neglected.

Due to the large gap between our production technology and equipment and its design requirements, when used in practice, due to the excessive load of the transmission mechanism, the transmission parts driven by the friction wheel will be damaged and damaged in a relatively short time. The cutting machine has been recognized by garment production and other industries as one of the most malfunctioning equipment, the highest maintenance rate and the most expensive equipment in the equipment they use. For decades, every garment factory has equipped with emergency clipping machine. When the machine fails, it will replace the machine for production. Otherwise, at any time will cause the next process to stop production.

　　 The problems existing in the existing technology cutting machine are analyzed as follows:

First, Sharpen The friction wheel and transmission gear in the mechanism are the most easily damaged parts. According to the statistics of many professional repair units, the sharpening mechanism accounts for more than 80% of the total maintenance.

Two. The blade edge of the abrasive belt is grinded out. After microscopic observation, the tooth shape is formed. After cutting the cloth, the blade of the micro blade will soon fall off, and the tooth edge will be passivated by cutting off the edge teeth. So a few pieces of cloth must be grind. According to the denim garment processing plant, ordinary carbon steel blades must finish grinding a blade one day.

Three. When the blade reaches the pole up and down, the end edge of the straight blade is separated from the chassis plane by 3.5 cm, and the 3.5 cm laminated cloth is cut off when the blade is running downward and downward. The cloth with a diameter of 3.5 centimeters is cut off by a straight edge. The design of foreign cutting machines was completed by two functions. The blending of two different functions often leads to the following problems when cutting.

(1) take the 12 inch cutter as an example, the length of the straight blade is 30 centimeters, the straight end edge can be used for the length of the cutting cloth only 1 cm, and the blade length ratio is 30 to 1. The proportion of workload is seriously unbalanced.

(2) straight knife edge is reciprocating thread to realize cutting operation, and it is not easy to passivation. The cutting edge of the end is passivated by impact cutting, and when the cutting operation feels the thrust is blocked, the 1 cm edge of the end has been passivated. Although the straight edge is still in sharp state, if the blade is not sharpened in time, the cutting head will passivate the continuous yarn and cloth fragments into the slot of the chassis.

Four, the position of the abrasive belt of the sharpening tool will often be shifted. After shifting, the edge of the abrasive belt can not be worn to the bottom end, and the two is that the cutter cuts off the abrasive belt.

Five. blade The friction between the plane and the tool magazine plane, the back of the knife and the back of the tool base is slight. After friction, the blade generates high temperature. When cutting the chemical fiber cloth, the cloth is sintered. Cut cowboy cloth, friction temperature placed on the blade from red to black.

Six, as the friction coefficient is too large, the cutting power is increased by increasing the power of the motor, increasing the power of the motor and increasing the weight, resulting in overloading of the cutter bar and chassis, and the phenomenon of the sinking of the chassis with the tool rocking.