Scientific development and technological innovation of bag making machine

Foreign plastic bag making machines have developed rapidly. Since the 1990s, there has been great progress in technology. In addition to the increasingly sophisticated auxiliary functions, production speed and high efficiency are important aspects, especially in electrical applications. Technology, so machine performance has indeed made great progress, which is the direction of development.

The improvement of the function of the bag making machine is mainly in the control part, such as the adjustment of the length of the bag, the adjustment of the color mark detection, and the improvement of the production speed. In the past, it was all adjusted by hand. If the length adjustment must be carefully adjusted to the value of the eccentricity of the crank mechanism, then open the mechanism bag, check the sample length, repeated several times, more troublesome. Moreover, since it is intermittent reciprocating motion, the machine vibration is large. If the stepping motor is used to directly drive the rubber roller for intermittent reciprocating operation, the number of pulses is controlled by the electric circuit to control the length of the working time of the motor. The fixed length of the film can be delivered with minimal error, which eliminates the need for a crank-link mechanism and facilitates lengthening, eliminating the need for electromagnetic clutches, brakes or overrunning clutches, as well as complex and expensive electronic control systems.

Stepper motors (such as the 130BC3100) should be equipped with a stepper motor driver and a dedicated stepper motor controller (such as the YXD-2) to concentrate the various electrical buttons. This makes it easy to set the length of the bag and other operating items on the control panel using the dialer. Such as machine stop, discharge amount (discharge contact), color mark photoelectric probe switch, machine main switch, welder temperature, counter, etc.

The main motor drives the main shaft to rotate, and the main shaft has a special cam (light opening), which can provide start and stop signals for the stepping motor. The machine works in coordination with the various requirements set while completing the bag making operation (sealing, cutting, conveying, color marking, etc.).

The production speed of the bag making machine can reach 140~150 times/min, the bag length is ≤1000mm, and the bag length error is small, about 0.5~1mm, which is much more efficient than the ordinary photoelectric control bag making machine.

Since all electrical component controllers are produced in China, including photoelectric probe switches (such as Sino-foreign joint ventures producing Futai photoelectric probes), proximity switches, etc., the price is cheap, convenient, and can be produced by themselves or by a specialized manufacturer. This professional production can greatly facilitate the production of bag making machines, and also improve the level of the whole machine, provide conditions for the development of more new bag making machines, and promote technological progress.