What is the travel switch? What are the functions of the travel switch? One type of travel switch, position switch (also known as limit switch), is a commonly used small current main electric appliance. The collision or control circuit is realized by the collision of the moving parts of the production machinery to make the contact action to achieve a certain control purpose. Typically, such switches are used to limit the position or travel of the mechanical motion, allowing the motion machine to automatically stop, reverse, shift, or automatically reciprocate at a certain position or stroke. In an electrical control system, the position switch functions to achieve sequential control, position control, and position status detection. Used to control the travel and limit protection of mechanical equipment. Construction: consists of the operating head, the contact system and the housing. In actual production, the travel switch is installed in a pre-arranged position. When the module mounted on the moving part of the production machine hits the travel switch, the contact of the travel switch acts to realize the switching of the circuit. Therefore, the stroke switch is an electric appliance that switches the circuit according to the stroke position of the moving part, and its function is similar to that of the button. The travel switch is widely used in all kinds of machine tools and lifting machinery to control its travel and limit the terminal. In the control circuit of the elevator, the travel switch is also used to control the speed of the switch car door, the limit of the automatic door opening and closing, and the upper and lower limit protection of the car. The travel switch can be mounted on a relatively stationary object (such as a fixed frame, a door frame, etc., referred to as a still life) or a moving object (such as a car, a door, etc., referred to as an animal). When the animal approaches the still life, the contact of the switch's linkage drive switch causes the closed contact to break or the open contact to close. The operation of the circuit and mechanism is controlled by the change of the opening and closing state of the switch contacts. Daily life There are many applications for the travel switch, and many of them have their own appearance. What role can such a simple switch play? It mainly plays the role of chain protection. The most common example is its application in washing machines and recorders (recorders). In the process of dehydration (drying) of the washing machine, the rotation speed is very high. If someone opens the door or cover of the washing machine inadvertently and then puts it in, it is easy to cause injury to people. In order to avoid such accidents, in the washing machine The door or cover is equipped with an electrical contact. Once someone opens the door or cover of the washing machine, the motor is automatically powered off, or even mechanically linked. When the door or cover is opened, it immediately "brakes" and forcibly turns. The parts stop to avoid hurting the person. In recorders and recorders, we often use fast forward or rewind, the tape spins rapidly, but automatically stops when it reaches the end of the tape. Here, the travel switch once again plays a role, but this time it is not caused by the collision but by the sudden increase of the tension of the tape. industry The travel switch is mainly used to convert the mechanical displacement into an electrical signal to change the operating state of the motor, thereby controlling the mechanical action or as a program control. The real use of the travel switch is in the industry, where it is combined with other equipment to form more complex automation equipment. There are many such travel switches on the machine that can be used to control the movement of the workpiece or the stroke of the automatic feed to avoid collisions. Sometimes the stroke switch is used to automatically reverse the controlled object between the two specified positions, thereby obtaining continuous reciprocating motion. For example, the car that automatically transports the material reaches the end point and touches the travel switch. When the rollover mechanism is connected, the material in the car is turned over and returned to the starting point. After reaching the starting point, it touches the start switch of the starting point, turns on the circuit of the loading mechanism, and starts automatic loading. Always doing this, it has become an automatic production line, which does not require people to work around the clock, saving people's physical labor. SHAOXING COLORBEE PLASTIC CO.,LTD , https://www.colorbeephoto.com
