Light curtain sensor with adjustable size

Abstract

The invention discloses a light curtain sensor with an adjustable size. The light curtain sensor comprises a first mounting box, a servo motor is fixed in the first mounting box; a first lead screw isfixed to an output shaft of the servo motor. The upper end part of the first screw rod is rotationally connected with the top end of a first mounting box; the first screw rod is in threaded transmission connection with a first transmission nut; the first transmission nut is embedded in the push plate; push rods are fixed to the upper sides of the two ends of the push plate. And the upper end of the push rod penetrates through the top end of the first mounting box and extends to the upper portion, a second mounting box is fixed to the end of the upper end of the push rod, a first light curtainsensor is fixed to the outer side of the second mounting box, a length adjusting mechanism is arranged in the second mounting box, and a second light curtain sensor is arranged on the length adjusting mechanism. Automatic adjustment of the height of the light curtain sensor is achieved, the length size of the light curtain sensor can be changed and adjusted, and the maneuverability and flexibility of the device are improved.

Description

technical field [0001] The invention belongs to the technical field of light curtain sensors, in particular to a size-adjustable light curtain sensor. Background technique [0002] The light curtain sensor consists of two parts: a light emitter and a light receiver. The light emitter emits modulated infrared light, which is received by the light receiver to form a protection net. When an object enters the protection net, and when the light is blocked by the object, the light receiver circuit responds immediately through the internal control circuit, that is, in the output Part of the output signal is used for emergency braking of machine tools such as punch presses and presses, which can effectively avoid safety accidents, avoid the danger of operators and third parties, and reduce the overall cost of accidents, which is beneficial to the company itself, operators and society. Application industry: forging machine tool factory, automobile manufacturing factory, motorcycle m...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a light curtain sensor with adjustable size to solve the above-mentioned background technology. Most of the current light curtain sensors are fixed on mechanical equipment, and their height cannot be adjusted. It is troublesome to disassemble the equipment, and it is easy to damage the light curtain sensor, and the length of the existing light curtain sensor is fixed, resulting in a fixed length range of monitoring, but when the mechanical equipment is replaced, if the product length changes If the length of the light curtain sensor is too large, the light curtain sensor cannot fully monitor the position of the product, which has potential safety hazards and is prone to safety accidents. Only different types of light curtain sensors can be replaced, which increases costs and consumes time.

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