CN110806671A - Industrial mechanical shutter for optical detection - Google Patents

Abstract

The invention provides an industrial mechanical shutter for optical detection, which comprises an optical lens, a front panel, a rear panel, an electromagnet, a photomultiplier, a shutter blocking piece and a connecting crank, wherein the rear panel is arranged behind the front panel to form a closed shell; according to the structure, the shutter blocking piece is quickly opened and closed through the connection and matching of the electromagnet, the connecting crank and the blocking piece, and the light inlet of the light inlet is controlled in a mode of quickly opening and closing the shutter blocking piece, so that the high-frequency response of the shutter is realized; and the opening or closing of the shutter is detected by arranging the Hall sensor, and the device has the advantages of simple mechanical structure and reliable and stable operation.

Description

Industrial mechanical shutter for optical detection

Technical Field

The invention relates to the field of detection, in particular to an industrial mechanical shutter for optical detection.

Background

At present, mechanical shutters in mainstream detection cameras in the market are low-frequency shutters with small calibers and response frequencies of 3-5 HZ, and few high-frequency response shutters exist, so that the high-frequency response shutters are difficult to apply to a high-speed industrial production line, and the phenomenon that the shutters are in a closed state or a trace amount of light penetrates exists, so that the detection precision of a precision optical instrument is influenced, and the detection accuracy is reduced.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides the industrial mechanical shutter for optical detection, which can realize the quick opening and closing function of the shutter, thereby realizing the high-frequency response of the shutter, automatically detecting the opening and closing condition of the shutter and having the advantages of reliable and stable operation and high working efficiency.

In order to solve the technical problems, the technical scheme of the invention is as follows:

an industrial mechanical shutter for optical detection comprises a front panel, a rear panel, an electromagnet, an optical lens, a shutter baffle, a connecting crank and a photomultiplier;

the back panel is arranged behind the front panel and forms a closed shell, the electromagnet and the photomultiplier are arranged behind the back panel, the shutter blocking piece is arranged between the front panel and the back panel and is connected with an output shaft of the electromagnet through the connecting crank, the optical lens is arranged on the shutter blocking piece and is communicated with the photomultiplier, and the photomultiplier is further connected with an external controller and an external illumination module.

Furthermore, a control unit and a photoelectric switch are arranged in the photomultiplier;

the control unit is connected with the electromagnet and the external controller, and the photoelectric switch is connected with the external illumination module.

Furthermore, the industrial mechanical shutter for optical detection is also provided with a first Hall sensor, a second Hall sensor and an induction column;

the second Hall sensor is arranged below the first Hall sensor, the first Hall sensor and the second Hall sensor are arranged on the rear panel, the first Hall sensor and the second Hall sensor are also connected with the control unit, the induction column is arranged on the shutter stop piece, and when the shutter stop piece reaches a first preset station, the induction column is connected with the first Hall sensor in an induction mode; when the shutter blocking piece reaches a second preset station, the induction column is connected with the second Hall sensor in an induction mode.

Furthermore, the rear panel, the shutter blocking piece and the connecting crank are made of PEEK plastic.

By adopting the technical scheme, the shutter blocking piece is quickly opened and closed through the connection and matching of the electromagnet, the connecting crank and the blocking piece, and the light inlet of the light inlet is controlled in a mode of quickly opening and closing the shutter blocking piece, so that the high-frequency response of the shutter is realized, and the function of quick detection is realized; and the opening and closing state of the shutter is detected by arranging the Hall sensor, and the automatic shutter opening and closing detection device has the advantages of simple mechanical structure and reliable and stable operation.

Drawings

FIG. 1 is a schematic diagram of an embodiment of an industrial mechanical shutter for optical inspection according to the present invention;

FIG. 2 is a side view of one embodiment of an industrial mechanical shutter for optical inspection according to the present invention;

the number designations in the figures are: 100-front panel, 200-rear panel, 300-electromagnet, 400-optical lens, 500-shutter blade, 600-crank, 700-photomultiplier, 800-first Hall sensor, 900-second Hall sensor, 1000-induction column.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

An industrial mechanical shutter for optical detection, as shown in fig. 1 and 2, comprises a front panel 100, a rear panel 200, an electromagnet 300, an optical lens 400, a shutter blade 500, a connecting crank 600 and a photomultiplier 700;

the back panel 200 is arranged behind the front panel 100 and forms a closed shell, the electromagnet 300 and the photomultiplier tube 700 are arranged behind the back panel 200, the shutter plate 500 is arranged between the front panel 100 and the back panel 200 and is connected with the output shaft of the electromagnet 300 through the connecting crank 600, the optical lens 400 is arranged on the shutter plate 500 and is communicated with the photomultiplier tube 700, and the photomultiplier tube 700 is also connected with an external controller and an external illumination module;

the electromagnet 300 is used for driving the shutter blade 500 to ascend through the crank 600 when rotating clockwise;

the shutter blade 500 is used for shielding the photomultiplier tube 700 when ascending;

the electromagnet 300 is also used for driving the shutter blade 500 to descend through the crank 600 when rotating anticlockwise;

the shutter blade 500 is used to stop shielding the photomultiplier tube 700 when descending;

photomultiplier 700 is used to acquire the optical signal.

Further, the photomultiplier tube 700 is provided with a control unit and a photoelectric switch therein;

the control unit is connected with the electromagnet 300 and an external controller; the photoelectric switch is also connected with the external illumination module;

the photoelectric switch is used for sending a starting instruction to the external illumination module when a detection object is detected;

and the control unit is used for judging that the detection tank body has defects when the photomultiplier 700 acquires an optical signal, and sending rejection information to the external controller.

Further, the photoelectric switch is configured to, when the detection object is detected, send a turn-on command to the external illumination module, and then further includes:

the control unit is used for judging that the detection tank body has no defects and not sending rejection information to the external controller when the photomultiplier 700 cannot acquire optical signals.

The control unit is further configured to control the electromagnet 300 to rotate clockwise according to a first control instruction sent by the external controller;

the control unit is further configured to control the electromagnet 300 to rotate counterclockwise according to a second control instruction sent by the external controller.

Further, as shown in fig. 1, the industrial mechanical shutter for optical detection is further provided with a first hall sensor 800, a second hall sensor 900 and an induction column 1000;

the second hall sensor 900 is arranged below the first hall sensor 800, the first hall sensor 800 and the second hall sensor 900 are arranged on the rear panel 200, the first hall sensor 800 and the second hall sensor 900 are also connected with the control unit, the induction column 1000 is arranged on the shutter blade 500, and when the shutter blade 500 reaches a first preset station, the induction column 1000 is connected with the first hall sensor 800 in an induction manner; when the shutter blade 500 reaches the second preset station, the sensing column 1000 is connected with the second hall sensor 900 in a sensing manner;

the first hall sensor 800 is used for sending a third control instruction to the control unit when being connected with the induction column 1000 in an induction manner;

the control unit is further configured to control the electromagnet 300 to stop rotating according to the third control command;

the control unit is further configured to control the photomultiplier tube 700 to stop acquiring the optical signal according to the third control instruction;

the second hall sensor 900 is used for sending a fourth control instruction to the control unit when being connected with the induction column 1000 in an induction manner;

the control unit is further configured to control the electromagnet 300 to stop rotating according to the fourth control instruction;

the control unit is further configured to control the photomultiplier tube 700 to start acquiring the light signal according to the fourth control instruction.

Further, the rear panel 200, the shutter blade 500 and the connecting crank 600 are made of PEEK plastic.

In a specific application scenario of the present invention, when a user controls the present invention to start to acquire photon information through a background controller, the background controller sends a second control instruction to the electromagnet 300 through the control unit, the electromagnet 300 rotates counterclockwise after acquiring the second control instruction, at this time, the connecting crank 600 rotates along with the output shaft of the electromagnet 300 and drives the shutter stop 500 to descend and stop blocking the light-passing hole of the photomultiplier tube 700, at this time, the second hall sensor 900 is connected to the sensing column 1000 in an inductive manner and sends a fourth control instruction to the control unit, the control unit controls the electromagnet 300 to stop rotating according to the fourth control instruction and controls the photomultiplier tube 700 to start to acquire an optical signal, at this time, when the photomultiplier tube 700 detects the detection object, the photomultiplier tube 700 controls the external illumination module to light up, at this time, the light emitted by the external illumination module passes through the through hole on the detection object and enters the photomultiplier tube 700, at this time, if the control unit determines that the photomultiplier tube 700 acquires the optical information, the control unit determines that the detected object has defects and sends rejection information to the external controller, and the external controller rejects the detected object according to the rejection information.

In another specific application scenario of the present invention, when a user controls the present invention to stop obtaining photon information through a background controller, the background controller sends a first control instruction to the electromagnet 300 through a control unit, the electromagnet 300 rotates clockwise after obtaining the first control instruction, at this time, the connecting crank 600 rotates along with an output shaft of the electromagnet 300 and drives the shutter catch 500 to ascend and block a light-passing hole of the photomultiplier tube 700, at this time, the first hall sensor 800 is connected to the inductive column 1000 in an inductive manner and sends a third control instruction to the control unit, and the control unit controls the electromagnet 300 to stop rotating according to the third control instruction and controls the photomultiplier tube 700 to stop obtaining light signals.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.

Claims (4)

1. An industrial mechanical shutter for optical detection is characterized by comprising a front panel, a rear panel, an electromagnet, an optical lens, a shutter baffle, a connecting crank and a photomultiplier;

the back panel is arranged behind the front panel and forms a closed shell, the electromagnet and the photomultiplier are arranged behind the back panel, the shutter blocking piece is arranged between the front panel and the back panel and is connected with an output shaft of the electromagnet through the connecting crank, the optical lens is arranged on the shutter blocking piece and is communicated with the photomultiplier, and the photomultiplier is further connected with an external controller and an external illumination module.

2. An industrial mechanical shutter for optical detection according to claim 1, wherein the photomultiplier tube arrangement is internally provided with a control unit and a photoelectric switch;

the control unit is connected with the electromagnet and the external controller, and the photoelectric switch is connected with the external illumination module.

3. The industrial mechanical shutter for optical inspection according to claim 1, wherein the industrial mechanical shutter for optical inspection is further provided with a first hall sensor, a second hall sensor, and an induction column;

the second Hall sensor is arranged below the first Hall sensor, the first Hall sensor and the second Hall sensor are arranged on the rear panel, the first Hall sensor and the second Hall sensor are also connected with the control unit, the induction column is arranged on the shutter stop piece, and when the shutter stop piece reaches a first preset station, the induction column is connected with the first Hall sensor in an induction mode; when the shutter blocking piece reaches a second preset station, the induction column is connected with the second Hall sensor in an induction mode.

4. The mechanical shutter for optical inspection as claimed in claim 1, wherein the material of the back plate, the shutter blade and the connecting crank is PEEK plastic.

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