Shanghai Xipu Electrical Equipment Co., Ltd
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Direct acting travel switch

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In the electrical control system, the function of the position switch is to realize sequence control, positioning control and position state detection. It is used to control the stroke and limit protection of mechanical equipment. Structure: It consists of operating head, contact system and housing.

In actual production, the travel switch is installed in a pre-arranged position. When the module installed on the moving parts of the production machinery hits the travel switch, the contacts of the travel switch act to realize the switching of the circuit. Therefore, the travel switch is an electrical appliance that switches the circuit according to the travel position of the moving part, and its working principle is similar to that of a button.

The travel switch is mainly used to convert the mechanical displacement into an electrical signal, so that the running state of the motor can be changed, so as to control the mechanical action or be used for program control.

The real use of the travel switch is in industry, where it cooperates with other equipment to form more complex automation equipment.

There are many such travel switches on the machine tool, which are used to control the travel of the workpiece movement or automatic tool feed to avoid collision accidents. Sometimes the travel switch is used to automatically switch the direction of the controlled object between the two specified positions, so as to obtain continuous reciprocating motion. For example, when the trolley that automatically transports the material reaches the end, it touches the travel switch and turns on the overturning mechanism, and the material in the car is turned over and returned to the starting point. After reaching the starting point, it touches the travel switch at the starting point, turns on the circuit of the loading mechanism, and starts automatic loading. If it goes on like this, it will become an automatic production line, which does not need human supervision, and works around the clock, saving people’s manual labor.

The action principle of the direct-acting travel switch is similar to that of the button, the difference is: one is manual, and the other is collided by the collision block of the moving part. When the impact block on the external moving part touches the button to make the contact move, when the moving part leaves, the contact automatically resets under the action of the spring.

Its action principle is the same as that of the button switch, but the opening and closing speed of its contacts depends on the running speed of the production machinery, and it should not be used in places where the speed is lower than 0.4m/min.


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Zhejiang SHUYI Electric Co., LTD, Focus on switches with 30 years.

An original factory of micro switch; foot switch; toggle switch; limit switch from China.

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