Optical filter coupling detection equipment capable of realizing multi-point detection

Abstract

The invention discloses an optical filter coupling detection device capable of multi-point detection, and relates to the technical field of optical filter detection, the optical filter coupling detection device comprises a rack, a shielding unit, a detection unit and a marking unit, the rack is used for installing and fixing the shielding unit, the detection unit and the marking unit, the shielding unit is used for shielding the edge of a circular optical filter to be detected, and the marking unit is used for marking the edge of the circular optical filter to be detected. The detection unit is used for multi-point simultaneous detection of the optical filter, the marking unit is used for marking the defective optical filter, and when the optical filter is installed at a to-be-detected position, the shielding unit is used for shielding the edges of the optical filters with different diameters, so that the phenomena of reflection, scattering and the like possibly existing on the edges of the optical filters are avoided, and the detection accuracy is improved. The light transmittance of the edge and the light transmittance of the center area are different, the detection result is influenced, the detection unit carries out synchronous detection of multiple point positions on the optical filter, the detection efficiency is improved, and when it is detected that a certain area of the optical filter has a non-uniform defect, the marking unit marks the optical filter, and follow-up classification is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of optical filter detection, in particular to an optical filter coupling detection device capable of multi-point detection. Background Art

[0002] With the continuous development of optical technology, filters are increasingly used in various fields, such as photography, optical instruments, medical equipment, communications, etc. The performance of filters directly affects the optical performance and imaging quality of related equipment. Therefore, accurate and efficient detection of filters is crucial.

[0003] At present, there are the following problems in the detection of filters:

[0004] Traditional filter inspection methods usually use single-point inspection, that is, measuring the optical performance at a specific position of the filter. However, this method cannot fully reflect the overall performance of the filter, because the filter may be non-uniform during the production process, and the optical performance at different positions may vary. For example, in some large filters or applications with high optical performance requirements, single-point inspection may ignore local defects or performance changes in the filter, leading to misjudgment of the filter quality.

[0005] In the transmittance detection of filters, the edge area often has a greater impact on the detection results. There may be reflection, scattering and other phenomena at the edge of the filter, which makes the transmittance at the edge different from that in the central area. Traditional detection methods usually do not effectively block or process the edge area, resulting in inaccurate transmittance detection results. This not only affects the accurate evaluation of the optical performance of the filter, but may also cause the performance of the optical system to deteriorate in actual applications.

[0006] When a filter has a defect of uneven transmittance, current detection methods often fail to mark the defect quickly and accurately, which makes it difficult to distinguish and handle defective filters in subsequent production processes, increasing production costs and time. At the same time, the lack of an effective defect marking function is not conducive to tracing and improving quality problems in the filter production process. Summary of the invention

[0007] The purpose of the present invention is to provide a filter coupling detection device capable of multi-point detection to solve the problems raised in the prior art.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] The filter coupling detection device capable of multi-point detection comprises a frame, a detection unit, a shielding unit and a marking unit, wherein the frame is placed on a horizontal foundation, a slide groove is arranged on the frame, a vertical plate is arranged on the surface of one end of the frame away from the horizontal foundation, the vertical plate and the frame are slidably installed in the slide groove, a circular through hole is opened on the vertical plate, a clamping block is axially symmetrically installed in the circular through hole with a horizontal axis as the center, a distance sensor is arranged on the vertical plate, a thread is arranged on the contact end of the clamping block and the vertical plate, the detection unit is fixedly installed on the surface of one end of the frame away from the horizontal foundation, the detection unit has the function of multi-point detection of filters and increasing the precision detection of defective filters, the shielding unit is fixedly installed on the surface of one end of the frame away from the horizontal foundation, the marking unit is fixedly connected to the frame, and the marking unit has the function of marking defective filters.

[0010] The rack is used to install and fix the blocking unit, the detection unit and the marking unit. The blocking unit is used to block the edge of the circular filter to be inspected, the detection unit is used to simultaneously detect multiple points of the filter, and the marking unit is used to mark defective filters. When the filter is installed at the location to be inspected, the blocking unit is used to block the edges of filters of different diameters to avoid reflection, scattering and other phenomena at the edges of the filter, which makes the transmittance at the edge different from that in the center area and affects the detection result. The detection unit performs synchronous detection of multiple points on the filter to improve the detection efficiency. When uneven defects are detected in a certain area of ​​the filter, the marking unit marks the filter for subsequent classification.

[0011] Furthermore, the detection unit includes a telescopic rod, a mounting box, a motor, a driving gear, a driven gear, a gear ring, a connecting rod, a transmission plate, a buffer spring, a slider, a light source, a support tube, a photoresistor, a reflective lens, a rotating column, a first memory spring and a second memory spring. The telescopic end of the telescopic rod is fixedly connected to the vertical plate, the fixed end of the telescopic rod is fixedly connected to the mounting box, the mounting box is fixedly mounted on the surface of one end of the frame away from the horizontal foundation, the fixed end of the motor is fixedly mounted inside the mounting box, the output end of the motor is fixedly connected to the driving gear, the driving gear is meshed with the driven gear, the driven gear is rotatably mounted on the long rod at the fixed end of the motor, the driven gear is meshed with the gear ring, the outer surface of the gear ring is fixedly connected to the middle of the connecting rod, one end of the connecting rod is rotatably connected to the mounting box, and the other end is fixedly connected to the transmission plate, the transmission plate is provided with a rectangular groove, one end of the buffer spring is fixedly connected to the inner wall of the transmission plate groove away from the central axis, and the other end is fixedly connected to the slider, the slider is slidably mounted in the transmission plate groove, and the transmission plate is evenly provided with a plurality of a group of circular through holes, the light source is fixedly installed between the gear ring and the transmission plate, an opaque soft film is arranged above the buffer spring, when the slider is parallel to the vertical axis, the number of circular through holes blocked by the slider below is less than the number of circular through holes blocked by the slider above, the support cylinder is fixedly installed at one end of the frame away from the horizontal foundation, the photoresistor is fixedly installed on the outer surface of the support cylinder close to the motor, there are multiple reflective lenses, the reflective lenses are rotatably connected to the rotating column, a sliding groove is opened on the inner surface of the support cylinder in the horizontal direction, and the two ends of the rotating column are slidably connected to the sliding groove of the support cylinder, one end of the first memory spring is fixedly connected to the inner wall of the support cylinder, and the other end is fixedly connected to the rotating column, one end of the second memory spring is fixedly connected to the inner wall of the support cylinder, and the other end is fixedly connected to the rotating column, the inner surface of the support cylinder close to the horizontal foundation is evenly provided with sliding grooves, each sliding groove is arranged at intervals below the rotating column, the rotating column connected to the first memory spring is slidably installed in the sliding groove of the support cylinder, and the rotating column connected to the second memory spring is slidably installed in the sliding groove of the support cylinder.

[0012] When the filter is placed on the clamping block, the external controller controls the motor to start, thereby driving the driving gear to rotate, and the gear ring to rotate under the transmission action of the driven gear, thereby driving the transmission plate to rotate synchronously under the transmission action of the connecting rod, and the slider is driven to squeeze the buffer spring under the action of centrifugal force, so that the circular through hole is no longer blocked, so that the light source is transmitted from the circular through hole and irradiates the filter. When the slider is in the vertical direction, the upper slider moves downward under the action of its own gravity and the restoring force of the buffer spring to block more circular through holes below. The number of circular through holes blocked by the slider below is increased, so that when it is in the vertical direction, multi-point detection of the filter is realized, thereby improving the detection efficiency of the filter. When the transmittance of the next area of ​​the filter needs to be detected, the motor speed is increased by the controller, and the slider further compresses the buffer spring under the action of centrifugal force, reducing the number of blocked circular through holes, thereby increasing the irradiation area and improving the on the other hand, the external controller controls the telescopic rod to extend and retract, thereby pushing the vertical plate to move, until it moves to the optimal test distance and then performs filter coupling detection, thereby improving the filter coupling detection. The efficiency is that when the photoresistor detects that the light intensity of the light source passing through the filter is lower than the set value, the filter to be inspected is determined to be a defective product. At this time, the photoresistor feeds back a signal to the controller. On the one hand, the controller passes a certain current value into the first memory spring, so that the first memory spring is energized and contracts a certain distance, thereby pulling the inner rotating column to move along the sliding groove toward the inner wall of the support tube, thereby pulling the adjacent rotating columns closer to each other, and making the adjacent reflective lenses symmetrically deflected with the middle rotating column as the center, so that the reflective lenses and the light source are at an angle of 45 degrees. On the other hand, the controller passes an equal amount of current value into the second memory spring, so that the second memory spring is energized and expands a certain distance, so that the outer rotating column moves along the sliding groove toward the middle of the support tube, and pulls the adjacent rotating columns closer to each other. At the same time, the adjacent reflective lenses are also symmetrically deflected with the rotating column as the center, so that the outer reflective lenses and the light source are also at an angle of 45 degrees, so that the light source reduces the light intensity of the defective filter through continuous multiple reflections when entering the first reflective lens, thereby expanding the light intensity loss value, making it easier for the receiver to detect the light intensity difference of the defective product, thereby improving the accuracy of the receiver's detection.

[0013] Furthermore, the shielding unit includes a fixed cylinder, an inclined slide, a push block, two telescopic rods, a return spring, an arc-shaped soft plate and a shielding cloth. The fixed cylinder is fixedly installed on one end of the vertical plate close to the detection unit, one end of the inclined slide is fixedly installed on the inner surface of the fixed cylinder, two adjacent inclined slides are fixedly installed with shielding cloth, the second fixed end of the telescopic rod is installed on the inner surface of the fixed cylinder, the second telescopic end of the telescopic rod is slidably connected to the push block, the push block is fixedly connected to the return spring, the return spring is installed inside the arc-shaped soft plate, and the arc-shaped soft plate is connected to the fixed cylinder through the shielding cloth.

[0014] When the filter is placed on the clamping block, the depth of the clamping block entering the vertical plate is changed by rotating the thread of the clamping block, thereby adjusting the clamping diameter to adapt to the clamping of filters of different diameters. At this time, the distance sensor detects the distance from the bottom of the upper clamping block to the rack, and feeds back to the controller. The controller controls the extension of the telescopic rod 2 to push the push block to compress the reset spring and move along the inclined slide until it moves to the set distance from the edge of the filter and stops moving. At this time, the arc-shaped soft plate drives the shielding cloth to block the edge of the filter, thereby avoiding reflection, scattering and other phenomena of the light source at the edge of the filter when the filter is performing transmittance detection, resulting in a difference in transmittance at the edge and the center area, resulting in inaccurate transmittance detection results, thereby improving the detection accuracy of filter coupling.

[0015] Furthermore, the marking unit includes telescopic rod three, a guide plate, a movable plate, a holding box, a magnetic block, a pull rope, a guide column, a winding tube, a stirring rod, a torsion spring, a nozzle, a guide column, a compression spring, a marking pen, a box and a receiver. The box is fixedly mounted on the surface of one end of the frame away from the horizontal foundation. One end of the telescopic rod three is fixedly connected to the inner wall of the holding box away from the detection unit, and the other end is fixedly connected to the movable plate. The movable plate is provided with a rectangular through hole, and a rectangular cavity is provided directly above the rectangular through hole of the movable plate. The guide plate is slidably connected to the rectangular through hole of the movable plate. The guide plate is fixedly mounted on the inner walls of both sides of the holding box parallel to the horizontal axis. The holding box is fixedly mounted Installed on the inner surface of one end of the box away from the horizontal base, red ink is contained in the containing box, the magnetic block is installed in the rectangular cavity of the movable plate, one end of the pull rope is fixedly connected to the magnetic block, and the other end passes around the guide column and is fixedly connected to the winding tube, the winding tube is rotatably connected to the movable plate through a torsion spring, one end of the stirring rod is fixedly connected to the winding tube, and the other end extends out of the movable plate, the nozzle is conductively connected to the containing box, the guide column is fixedly installed at both ends of the nozzle parallel to the horizontal axis, one end of the compression spring is fixedly connected to the fixing ring on the left side of the nozzle, and the other end is fixedly connected to the marking pen, the marking pen is slidably installed inside the nozzle, and the receiver is fixedly installed inside the box.

[0016] When the receiver receives the light source signal through the filter, it analyzes it. When the transmittance is lower than the set value, the receiver feeds back a signal to the controller. At this time, the controller controls the telescopic rod to extend three times, thereby driving the movable plate to move along the guide plate and squeeze the red ink inside into the nozzle and wet the marking pen. As the movable plate continues to move, under the action of pressure, the ink pushes the marking pen to extend the nozzle along the direction of the guide column and contact the filter, thereby quickly marking the defective filter, which is convenient for subsequent staff to distinguish and handle defective products. In the process of the movable plate moving along the guide plate, when the magnetic block passes through the groove on the guide plate, the magnetic block is attracted to move upward under the attraction of opposite polarities between the electromagnet and the magnetic block, thereby stretching the pull rope. The pull rope pulls the winding tube along the guide column to compress the torsion spring and rotate, thereby driving the stirring rod to rotate, stirring the red ink inside the container. Stirring improves the fluidity of the red ink and avoids the viscosity of the ink, which makes it impossible for the marker pen to be dipped in ink and the marker pen to be unable to extend, thereby affecting the marking of the defective filter. When the magnetic block passes through the middle of the two grooves on the guide plate, under the combined action of the repulsive force of the same polarity between the electromagnet and the magnetic block and the restoring force of the torsion spring itself, the pull rope is cooperated to move the magnetic block downward, so that the winding tube drives the stirring rod to rotate synchronously, and the red ink inside the holding box is stirred again, thereby improving the fluidity of the red ink. When the marking pen completes marking, the controller controls the telescopic rod to contract three times to pull the moving plate to reset. During the movement of the moving plate, on the one hand, the magnetic block interacts with the electromagnet on the guide plate to stir the red ink for a second time to improve the fluidity. On the other hand, the marking pen is reset under the action of the restoring force of the compression spring itself, and slides into the nozzle to be dipped in ink to prepare for the next marking.

[0017] Furthermore, the shielding cloth is made of opaque cloth.

[0018] In order to facilitate the shielding of the edge of the filter, the light source is prevented from irradiating the edge of the filter to cause reflection, scattering and other phenomena, thereby improving the accuracy of the transmittance detection results.

[0019] Furthermore, a plurality of groups of grooves are evenly arranged on the surface of one end of the guide plate away from the horizontal base, electromagnets with the same magnetic properties as the magnetic blocks are arranged in the middle of adjacent grooves, and electromagnets with opposite magnetic properties to the magnetic blocks are arranged inside the grooves.

[0020] In order to make the movable plate move on the guide plate, the magnetic block moves up and down under the action of the electromagnet, thereby driving the winding tube and the stirring rod to rotate synchronously to stir the red ink in the containing box, thereby improving the fluidity of the ink and avoiding the ink from becoming sticky, resulting in the inability of the marking pen to be soaked in ink and the marking pen to be unable to extend, thereby affecting the marking of the defective filter.

[0021] Furthermore, the maximum angle of rotation of the winding tube driven by the torsion spring is 60 degrees, and the torsion spring is initially in a stretched state.

[0022] In order to make the magnetic block move up and down when passing through the electromagnet, thereby driving the stirring rod to rotate, the stirring rod can swing back and forth in a large range to improve the uniform stirring of the ink. Since the torsion spring is initially in a stretched state, it will continuously exert a restoring force on the winding tube, causing the winding tube to continuously reciprocate. This dynamic stirring effect can effectively break the stratification phenomenon that may exist in the ink, ensure that the ink can be fully stirred in the entire container, and improve the fluidity of the ink.

[0023] Furthermore, a heater is provided inside the nozzle.

[0024] In order to prevent the ink from clumping in winter, the heater heats the red ink entering the nozzle to increase the fluidity of the ink and improve the marking effect of the marker pen.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. When located in the vertical direction, the present invention realizes multi-point detection of the filter by moving the upper slider in the detection unit downward under the action of its own gravity and the restoring force of the buffer spring to block more circular through holes below than the number of circular through holes blocked by the lower slider at this time, thereby improving the detection efficiency of the filter. When the photoresistor detects that the light intensity of the light source passing through the filter is lower than the set value, a certain current value is passed into the first memory spring and the second memory spring to contract the first memory spring and expand the second memory spring at the same time, so that the reflective lens is 45 degrees to the irradiation direction of the light source, and the light intensity of the defective filter is reduced through reflection by multiple reflective lenses, thereby expanding the light intensity loss value, making it easier for the receiver to detect the light intensity difference of the defective product, thereby improving the detection accuracy of the receiver.

[0027] 2. The present invention extends the second telescopic rod in the shielding unit to push the push block to compress the reset spring and move along the inclined slide, thereby driving the arc-shaped soft plate to drive the shielding cloth to shield the edge of the filter, thereby avoiding the phenomenon of light source reflection and scattering at the edge of the filter when the filter is performing transmittance detection, resulting in a difference in transmittance at the edge and the center area, resulting in inaccurate transmittance detection results, thereby improving the detection accuracy of filter coupling.

[0028] 3. In the present invention, when the magnetic block in the marking unit passes through the guide plate, the electromagnet and the magnetic block change their polarity at all times, driving the magnetic block to move up and down. Therefore, under the action of the pull rope, the winding tube is pulled to drive the stirring rod to stir the red ink, thereby improving the fluidity of the red ink and avoiding the viscosity of the ink, which results in the inability to make the marking pen dipped in ink and the marking pen unable to extend, thereby affecting the marking of the defective filter. At the same time, the moving plate moves along the guide plate and squeezes the red ink inside into the nozzle and wets the marking pen. As the moving plate continues to move, under the action of pressure, the ink pushes the marking pen to extend out of the nozzle along the direction of the guide column and contact the filter, thereby quickly marking the defective filter, making it convenient for subsequent staff to distinguish and handle defective products. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the overall appearance structure of a filter coupling detection device capable of multi-point detection according to the present invention;

[0030] Figure 2 It is a front view structural schematic diagram of a filter coupling detection device capable of multi-point detection according to the present invention;

[0031] Figure 3 It is a schematic diagram of the top view structure of a filter coupling detection device capable of multi-point detection according to the present invention;

[0032] Figure 4 The present invention is a filter coupling detection device capable of multi-point detection Figure 3 Schematic diagram of the cross-section structure at AA in the middle;

[0033] Figure 5 This is a schematic diagram of the internal structure of an installation box of a filter coupling detection device capable of multi-point detection according to the present invention;

[0034] Figure 6 This is a schematic diagram of the installation position structure of the driving gear, the driven gear and the gear ring of a filter coupling detection device capable of multi-point detection according to the present invention;

[0035] Figure 7 This is a schematic diagram of the installation position structure of a transmission plate, a buffer spring and a slider of a filter coupling detection device capable of multi-point detection according to the present invention;

[0036] Figure 8 It is a schematic diagram of the installation position structure of a fixed cylinder, a shielding cloth and an arc-shaped soft board of a filter coupling detection device capable of multi-point detection according to the present invention;

[0037] Fig. 9 This is a schematic diagram of the internal structure of a fixed cylinder of a filter coupling detection device capable of multi-point detection according to the present invention;

[0038] Fig.10 It is a schematic diagram of the installation position of the shielding unit part of the filter coupling detection device capable of multi-point detection according to the present invention;

[0039] Fig.11 This is a schematic diagram of the internal structure of a containing box of a filter coupling detection device capable of multi-point detection according to the present invention;

[0040] Fig.12 This is a schematic diagram of the internal structure of a moving plate of a filter coupling detection device capable of multi-point detection according to the present invention;

[0041] Fig.13 This is a schematic diagram of the internal structure of a support tube of a filter coupling detection device capable of multi-point detection according to the present invention, wherein the arrow represents the irradiation direction of the light source.

[0042] In the figure: 1, frame; 11, vertical plate; 12, clamping block; 2, detection unit; 21, telescopic rod 1; 22, installation box; 23, motor; 24, driving gear; 25, driven gear; 26, gear ring; 27, connecting rod; 28, transmission plate; 29, buffer spring; 210, slider; 211, light source; 212, support cylinder; 213, photoresistor; 214, reflective lens; 215, rotating column; 216, first memory spring; 217, second memory spring; 3, shielding unit; 31 , fixed cylinder; 32, inclined sliding plate; 33, pushing block; 34, telescopic rod two; 35, reset spring; 36, arc soft plate; 37, shielding cloth; 4, marking unit; 41, telescopic rod three; 42, guide plate; 43, moving plate; 44, holding box; 45, magnetic block; 46, pull rope; 47, guide column; 48, winding tube; 49, stirring rod; 410, torsion spring; 411, nozzle; 412, guide column; 413, compression spring; 414, marking pen; 415, box; 416, receiver. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] Example: Figure 1-Figure 13 As shown, the present invention provides a technical solution:

[0045] like Figure 1As shown, a filter coupling detection device capable of multi-point detection includes a frame 1, a detection unit 2, a shielding unit 3 and a marking unit 4. The frame 1 is placed on a horizontal foundation, a slide groove is arranged on the frame 1, a vertical plate 11 is arranged on the surface of one end of the frame 1 away from the horizontal foundation, the vertical plate 11 and the frame 1 are slidably installed in the slide groove, a circular through hole is opened on the vertical plate 11, a clamping block 12 is axially symmetrically installed in the circular through hole with the horizontal axis as the center, a distance sensor is arranged on the vertical plate 11, and a thread is arranged on the contact end of the clamping block 12 and the vertical plate 11, the detection unit 2 is fixedly installed on the surface of one end of the frame 1 away from the horizontal foundation, the detection unit 2 has the function of multi-point detection of filters and increasing the accurate detection of defective filters, the shielding unit 3 is fixedly installed on the surface of one end of the frame 1 away from the horizontal foundation, the marking unit 4 is fixedly connected to the frame 1, and the marking unit 4 has the function of marking defective filters.

[0046] The frame 1 is used to install and fix the shielding unit 3, the detection unit 2 and the marking unit 4. The shielding unit 3 is used to shield the edge of the circular filter to be inspected, the detection unit 2 is used to simultaneously detect multiple points of the filter, and the marking unit 4 is used to mark the defective filter. When the filter is installed at the location to be inspected, the shielding unit 3 is used to shield the edges of filters of different diameters to avoid reflection, scattering and other phenomena that may exist at the edges of the filter, which makes the transmittance at the edge different from that in the center area and affects the detection result. The detection unit 2 performs synchronous detection of multiple points on the filter to improve the detection efficiency. When uneven defects are detected in a certain area of ​​the filter, the marking unit 4 marks the filter to facilitate subsequent classification.

[0047] like Figure 2 , 3, 5, 6, 7, and 13, the detection unit 2 includes a telescopic rod 21, an installation box 22, a motor 23, a driving gear 24, a driven gear 25, a gear ring 26, a connecting rod 27, a transmission plate 28, a buffer spring 29, a slider 210, a light source 211, a support tube 212, a photoresistor 213, a reflective lens 214, a rotating column 215, a first memory spring 216, and a second memory spring 217. The telescopic end of the telescopic rod 21 is fixedly connected to the vertical plate 11, and the fixed end of the telescopic rod 21 is fixedly connected to the installation box 22. The installation box 22 is fixedly mounted on the surface of one end of the frame 1 away from the horizontal foundation, and the fixed end of the motor 23 is fixedly mounted on the installation box Inside the motor 22, the output end of the motor 23 is fixedly connected to the driving gear 24, the driving gear 24 is meshed with the driven gear 25, the driven gear 25 is rotatably mounted on the long rod at the fixed end of the motor 23, the driven gear 25 is meshed with the gear ring 26, the outer surface of the gear ring 26 is fixedly connected to the middle of the connecting rod 27, one end of the connecting rod 27 is rotatably connected to the installation box 22, and the other end is fixedly connected to the transmission plate 28, the transmission plate 28 is provided with a rectangular groove, one end of the buffer spring 29 is fixedly connected to the inner wall of the groove of the transmission plate 28 away from the central axis, and the other end is fixedly connected to the slider 210, the slider 210 is slidably mounted in the groove of the transmission plate 28, and the transmission plate 28 moves along the A plurality of circular through holes are evenly arranged in the groove, the light source 211 is fixedly installed between the gear ring 26 and the transmission plate 28, an opaque soft film is arranged above the buffer spring 29, when the slider 210 is parallel to the vertical axis, the number of circular through holes blocked by the lower slider 210 is less than the number of circular through holes blocked by the upper slider 210, the support cylinder 212 is fixedly installed at the end of the frame 1 away from the horizontal base, the photoresistor 213 is fixedly installed on the outer surface of the end of the support cylinder 212 close to the motor 23, there are a plurality of reflective lenses 214, the reflective lenses 214 are rotatably connected to the rotating column 215, a slide groove is arranged on the inner surface of the support cylinder 212 in the horizontal direction, and the rotating column 215 is connected to the rotating column 215. The two ends of the first memory spring 216 are slidably connected with the sliding groove of the support cylinder 212. One end of the first memory spring 216 is fixedly connected with the inner wall of the support cylinder 212, and the other end is fixedly connected with the rotating column 215. One end of the second memory spring 217 is fixedly connected with the inner wall of the support cylinder 212, and the other end is fixedly connected with the rotating column 215. The inner surface of the end of the support cylinder 212 close to the horizontal base is uniformly provided with sliding grooves, and each sliding groove is arranged at intervals below the rotating column 215. The rotating column 215 connected with the first memory spring 216 is slidably installed in the sliding groove of the support cylinder 212, and the rotating column 215 connected with the second memory spring 217 is slidably installed in the sliding groove of the support cylinder 212.

[0048] When the filter is placed on the clamping block 12, the motor 23 is controlled to start by the external controller, thereby driving the driving gear 24 to rotate, and the gear ring 26 is driven to rotate under the transmission action of the driven gear 25, thereby driving the transmission plate 28 to rotate synchronously under the transmission action of the connecting rod 27, and driving the slider 210 to squeeze the buffer spring 29 under the action of centrifugal force, so that the circular through hole is no longer blocked, so that the light source 211 is transmitted from the circular through hole and irradiates the filter. When the slider 210 is in the vertical direction, the upper slider 210 moves downward under the action of its own gravity and the restoring force of the buffer spring 29, and the number of circular through holes below that are blocked is more than that at this time. The number of circular through holes blocked by the slider 210 below is increased, so that when it is located in the vertical direction, the detection of multiple points of the filter is realized, and the detection efficiency of the filter is improved. When the transmittance detection of the next area of ​​the filter is required, the speed of the motor 23 is increased by the controller. Under the action of centrifugal force, the slider 210 further compresses the buffer spring 29, reducing the number of blocked circular through holes, thereby increasing the irradiation area and improving. On the other hand, the external controller controls the telescopic rod 21 to extend and retract, thereby pushing the vertical plate 11 to move, until it moves to the optimal test distance and then performs filter coupling detection, thereby improving the efficiency of filter coupling detection. When the photoresistor 213 detects the penetration When the light intensity of the filter light source 211 is lower than the set value, the filter to be inspected is determined to be a defective product. At this time, the photoresistor 213 feeds back a signal to the controller. On the one hand, the controller passes a certain current value into the first memory spring 216, so that the first memory spring 216 is energized and contracts a certain distance, thereby pulling the inner rotating column 215 to move along the sliding groove toward the inner wall of the support cylinder 212, thereby pulling the adjacent rotating columns 215 closer to each other, and making the adjacent reflective lenses 214 symmetrically deflected with the middle rotating column 215 as the center, so that the reflective lens 214 and the light source 211 are at an angle of 45 degrees. On the other hand, the controller passes a certain current value into the second memory spring 217. The current value of the amount causes the second memory spring 217 to expand a certain distance when energized, so that the outer rotating column 215 moves along the sliding groove toward the middle of the support tube 212, pulling the adjacent rotating columns 215 closer to each other while causing the adjacent reflecting lenses 214 to deflect symmetrically around the rotating columns 215, so that the outer reflecting lenses 214 and the light source 211 also form an angle of 45 degrees, so that the light source 211 reduces the light intensity of the defective filter through continuous multiple reflections when entering the first reflecting lens 214, thereby expanding the light intensity loss value, making it easier for the receiver 416 to detect the light intensity difference of the defective product, thereby improving the detection accuracy of the receiver 416.

[0049] like Figure 4 , 8As shown in Figures 9 and 10, the shielding unit 3 includes a fixed cylinder 31, an inclined slide plate 32, a push block 33, a telescopic rod 34, a reset spring 35, an arc-shaped soft plate 36 and a shielding cloth 37. The fixed cylinder 31 is fixedly mounted on one end of the vertical plate 11 close to the detection unit 2, one end of the inclined slide plate 32 is fixedly mounted on the inner surface of the fixed cylinder 31, and two adjacent inclined slide plates 32 are fixedly mounted with a shielding cloth 37. The fixed end of the telescopic rod 34 is mounted on the inner surface of the fixed cylinder 31, and the telescopic end of the telescopic rod 34 is slidably connected to the push block 33. The push block 33 is fixedly connected to the reset spring 35. The reset spring 35 is mounted inside the arc-shaped soft plate 36, and the arc-shaped soft plate 36 is connected to the fixed cylinder 31 through the shielding cloth 37.

[0050] When the filter is placed on the clamping block 12, the depth of the clamping block 12 entering the vertical plate 11 is changed by rotating the thread of the clamping block 12, thereby adjusting the clamping diameter to adapt to the clamping of filters of different diameters. At this time, the distance sensor detects the distance from the bottom of the upper clamping block 12 to the frame 1, and feeds back to the controller. The controller controls the telescopic rod 34 to extend, thereby pushing the push block 33 to compress the reset spring 35 and move along the inclined slide plate 32 until it moves to the set distance from the edge of the filter and stops moving. At this time, the arc-shaped soft plate 36 drives the shielding cloth 37 to shield the edge of the filter, thereby avoiding reflection, scattering and the like of the light source 211 at the edge of the filter when the filter is performing transmittance detection, resulting in a difference in transmittance at the edge and the center area, resulting in inaccurate transmittance detection results, thereby improving the detection accuracy of filter coupling.

[0051] like Figure 3 , 4As shown in , 11 and 12, the marking unit 4 includes a telescopic rod 3 41, a guide plate 42, a movable plate 43, a holding box 44, a magnetic block 45, a pull rope 46, a guide column 47, a winding tube 48, a stirring rod 49, a torsion spring 410, a nozzle 411, a guide column 412, a compression spring 413, a marking pen 414, a box 415 and a receiver 416. The box 415 is fixedly mounted on the surface of the frame 1 at one end away from the horizontal foundation. One end of the telescopic rod 3 41 is fixedly connected to the inner wall of the holding box 44 at one end away from the detection unit 2, and the other end is fixedly connected to the movable plate 43. The movable plate 43 is provided with a rectangular through hole, and a rectangular cavity is arranged directly above the rectangular through hole of the movable plate 43. The guide plate 42 is slidably connected to the rectangular through hole of the movable plate 43. The guide plate 42 is fixedly mounted on the inner walls of both sides of the holding box 44 parallel to the horizontal axis. The box 44 is fixedly installed on the inner surface of the box body 415 at one end away from the horizontal base. Red ink is contained in the box 44. The magnetic block 45 is installed in the rectangular cavity of the movable plate 43. One end of the pull rope 46 is fixedly connected to the magnetic block 45, and the other end passes around the guide column 47 and is fixedly connected to the winding tube 48. The winding tube 48 is rotatably connected to the movable plate 43 through the torsion spring 410. One end of the stirring rod 49 is fixedly connected to the winding tube 48, and the other end extends out of the movable plate 43. The nozzle 411 is conductively connected to the box 44. The guide column 412 is fixedly installed at both ends of the nozzle 411 parallel to the horizontal axis. One end of the compression spring 413 is fixedly connected to the fixing ring on the left side of the nozzle 411, and the other end is fixedly connected to the marking pen 414. The marking pen 414 is slidably installed inside the nozzle 411. The receiver 416 is fixedly installed inside the box body 415.

[0052] When the receiver 416 receives the signal of the light source 211 through the filter, it analyzes it. When the transmittance is lower than the set value, the receiver 416 feeds back a signal to the controller. At this time, the controller controls the telescopic rod 3 41 to extend, thereby driving the movable plate 43 to move along the guide plate 42 and squeeze the red ink inside into the nozzle 411 and wet the marking pen 414. As the movable plate 43 continues to move, under the action of pressure, the ink pushes the marking pen 414 to extend out of the nozzle 411 along the direction of the guide column 412 and contact the filter, thereby quickly marking the defective filter, which is convenient for subsequent staff to distinguish and handle defective products. In the process of the movable plate 43 moving along the guide plate 42, when the magnetic block 45 passes through the groove on the guide plate 42, the magnetic block 45 is attracted to move upward under the attraction of opposite polarities between the electromagnet and the magnetic block 45, thereby stretching the pull rope 46. The pull rope 46 pulls the winding tube 48 along the guide column 47 to compress the torsion spring 410 and rotate, thereby driving the stirring rod 49 to rotate, and the red ink inside the containing box 44 is pressed. The red ink is stirred to improve the fluidity of the red ink and avoid the viscosity of the ink, which makes it impossible for the marking pen 414 to be dipped in the ink and the marking pen 414 to be extended, thereby affecting the marking of the defective filter. When the magnetic block 45 passes through the middle of the two grooves on the guide plate 42, under the joint action of the repulsive force of the same polarity of the electromagnet and the magnetic block 45 and the restoring force of the torsion spring 410 itself, the pull rope 46 is cooperated to move the magnetic block 45 downward, so that the winding tube 48 drives the stirring rod 49 to rotate synchronously, and the red ink inside the containing box 44 is stirred again to improve the fluidity of the red ink. When the marking pen 414 completes the marking, the controller controls the telescopic rod 41 to contract to pull the moving plate 43 to reset. During the movement of the moving plate 43, on the one hand, the magnetic block 45 interacts with the electromagnet on the guide plate 42 to stir the red ink for a second time to improve the fluidity. On the other hand, the marking pen 414 is reset under the action of the restoring force of the compression spring 413 itself, and slides into the nozzle 411 to be dipped in ink to prepare for the next marking.

[0053] like Figure 8 As shown, the shielding cloth 37 is made of opaque cloth.

[0054] In order to facilitate shielding the edge of the filter, it is prevented that the light source 211 irradiates the edge of the filter to cause reflection, scattering and the like, thereby improving the accuracy of the transmittance detection result.

[0055] like Fig.11 As shown, a plurality of groups of grooves are evenly arranged on the surface of one end of the guide plate 42 away from the horizontal base, electromagnets with the same magnetic properties as the magnetic block 45 are arranged in the middle of adjacent grooves, and electromagnets with opposite magnetic properties to the magnetic block 45 are arranged inside the grooves.

[0056] In order to make the movable plate 43 move on the guide plate 42, the magnetic block 45 moves up and down under the action of the electromagnet, thereby driving the winding tube 48 and the stirring rod 49 to rotate synchronously to stir the red ink in the containing box 44, thereby improving the fluidity of the ink and avoiding the viscosity of the ink, which results in the inability to make the marking pen 414 dipped in ink and the marking pen 414 unable to extend, thereby affecting the marking of the defective filter.

[0057] like Fig.11 As shown, the torsion spring 410 drives the winding tube 48 to rotate to a maximum angle of 60 degrees, and the torsion spring 410 is initially in a stretched state.

[0058] In order to make the magnetic block 45 move up and down when passing through the electromagnet, thereby driving the stirring rod 49 to rotate, and making the stirring rod 49 swing back and forth in a large range, thereby improving the uniform stirring of the ink, since the torsion spring 410 is initially in a stretched state, it will continuously apply a restoring force to the winding tube 48, causing the winding tube 48 to continuously reciprocate. This dynamic stirring effect can effectively break the stratification phenomenon that may exist in the ink, ensure that the ink can be fully stirred in the entire container, and improve the fluidity of the ink.

[0059] like Fig.11 As shown, a heater is provided inside the nozzle 411.

[0060] In order to prevent the ink from clumping in winter, the heater heats the red ink entering the nozzle 411 to improve the fluidity of the ink and improve the marking effect of the marking pen 414.

[0061] Working principle of the present invention:

[0062] When the filter is placed on the clamping block 12, the depth of the clamping block 12 entering the vertical plate 11 is changed by rotating the thread of the clamping block 12, thereby adjusting the clamping diameter to adapt to the clamping of filters of different diameters. At this time, the distance sensor detects the distance from the bottom of the upper clamping block 12 to the frame 1, and feeds back to the controller. The controller controls the telescopic rod 34 to extend, thereby pushing the push block 33 to compress the reset spring 35 and move along the inclined slide plate 32 until it moves to the set distance from the edge of the filter and stops moving. At this time, the arc-shaped soft plate 36 drives the shielding cloth 37 to shield the edge of the filter, thereby avoiding reflection, scattering and the like of the light source 211 at the edge of the filter when the filter is performing transmittance detection, resulting in a difference in transmittance at the edge and the center area, resulting in inaccurate transmittance detection results, thereby improving the detection accuracy of filter coupling.

[0063] On the one hand, the external controller controls the motor 23 to start, thereby driving the driving gear 24 to rotate, and the gear ring 26 is driven to rotate under the transmission action of the driven gear 25, thereby driving the transmission plate 28 to rotate synchronously under the transmission action of the connecting rod 27, and driving the slider 210 to squeeze the buffer spring 29 under the action of centrifugal force, so that the circular through hole is no longer blocked, so that the light source 211 is transmitted from the circular through hole and irradiates the filter. When the slider 210 is in the vertical direction, the upper slider 210 moves downward under the action of its own gravity and the restoring force of the buffer spring 29, and the number of circular through holes blocked below is greater than that blocked by the lower slider 210 at this time. The number of circular through holes, when located in the vertical direction, can realize the detection of multiple points of the filter, improve the detection efficiency of the filter, when it is necessary to detect the transmittance of the next area of ​​the filter, the speed of the motor 23 is increased by the controller, and the slider 210 further compresses the buffer spring 29 under the action of centrifugal force, thereby reducing the number of obstructions of the circular through holes, thereby increasing the irradiation area and improving the on the other hand, the external controller controls the telescopic rod 21 to extend and retract, thereby pushing the vertical plate 11 to move, until it moves to the optimal test distance and then performs the filter coupling detection, thereby improving the efficiency of the filter coupling detection, when the photoresistor 213 detects that the light source 2 passing through the filter When the light intensity of 11 is lower than the set value, the filter to be inspected is determined to be a defective product. At this time, the photoresistor 213 feeds back a signal to the controller. On the one hand, the controller passes a certain current value into the first memory spring 216, so that the first memory spring 216 is energized and contracts a certain distance, thereby pulling the inner rotating column 215 to move along the sliding groove toward the inner wall of the support cylinder 212, thereby pulling the adjacent rotating columns 215 closer to each other, and making the adjacent reflective lenses 214 symmetrically deflected with the middle rotating column 215 as the center, so that the reflective lens 214 and the light source 211 are at an angle of 45 degrees. On the other hand, the controller passes an equal amount of current into the second memory spring 217 The flow value makes the second memory spring 217 energized and expand a certain distance, so that the outer rotating column 215 moves along the sliding groove toward the middle of the support tube 212, pulling the adjacent rotating columns 215 closer to each other and making the adjacent reflecting lenses 214 deflect symmetrically around the rotating column 215, so that the outer reflecting lens 214 and the light source 211 also form an angle of 45 degrees, so that the light source 211 reduces the light intensity of the defective filter through continuous multiple reflections when entering the first reflecting lens 214, thereby expanding the light intensity loss value, making it easier for the receiver 416 to detect the light intensity difference of the defective product, thereby improving the detection accuracy of the receiver 416.

[0064] When the receiver 416 receives the signal of the light source 211 through the filter, it analyzes it. When the transmittance is lower than the set value, the receiver 416 feeds back a signal to the controller. At this time, the controller controls the telescopic rod 3 41 to extend, thereby driving the movable plate 43 to move along the guide plate 42 and squeeze the red ink inside into the nozzle 411 and wet the marking pen 414. As the movable plate 43 continues to move, under the action of pressure, the ink pushes the marking pen 414 to extend out of the nozzle 411 along the direction of the guide column 412 and contact the filter, thereby quickly marking the defective filter, which is convenient for subsequent staff to distinguish and handle defective products. In the process of the movable plate 43 moving along the guide plate 42, when the magnetic block 45 passes through the groove on the guide plate 42, the magnetic block 45 is attracted to move upward under the attraction of opposite polarities between the electromagnet and the magnetic block 45, thereby stretching the pull rope 46. The pull rope 46 pulls the winding tube 48 along the guide column 47 to compress the torsion spring 410 and rotate, thereby driving the stirring rod 49 to rotate, and the red ink inside the containing box 44 is pressed. The red ink is stirred to improve the fluidity of the red ink and avoid the viscosity of the ink, which makes it impossible for the marking pen 414 to be dipped in the ink and the marking pen 414 to be extended, thereby affecting the marking of the defective filter. When the magnetic block 45 passes through the middle of the two grooves on the guide plate 42, under the joint action of the repulsive force of the same polarity of the electromagnet and the magnetic block 45 and the restoring force of the torsion spring 410 itself, the pull rope 46 is cooperated to move the magnetic block 45 downward, so that the winding tube 48 drives the stirring rod 49 to rotate synchronously, and the red ink inside the containing box 44 is stirred again to improve the fluidity of the red ink. When the marking pen 414 completes the marking, the controller controls the telescopic rod 41 to contract to pull the moving plate 43 to reset. During the movement of the moving plate 43, on the one hand, the magnetic block 45 interacts with the electromagnet on the guide plate 42 to stir the red ink for a second time to improve the fluidity. On the other hand, the marking pen 414 is reset under the action of the restoring force of the compression spring 413 itself, and slides into the nozzle 411 to be dipped in ink to prepare for the next marking.

[0065] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A filter coupling detection device capable of multi-point detection, characterized in that: The filter coupling detection device capable of multi-point detection comprises a frame (1), a detection unit (2), a shielding unit (3) and a marking unit (4), wherein the frame (1) is placed on a horizontal base, a slide groove is provided on the frame (1), a vertical plate (11) is provided on the surface of one end of the frame (1) away from the horizontal base, the vertical plate (11) and the frame (1) are slidably mounted in the slide groove, a circular through hole is provided on the vertical plate (11), and a clamping block (12) is axially rotatably mounted in the circular through hole with a horizontal axis as the center. The vertical plate (11) is provided with a distance sensor, the clamping block (12) is provided with a thread at the contact end with the vertical plate (11), the detection unit (2) is fixedly mounted on the surface of the end of the frame (1) away from the horizontal base, the detection unit (2) has the function of multi-point detection of the filter and increasing the precision detection of defective filters, the shielding unit (3) is fixedly mounted on the surface of the end of the frame (1) away from the horizontal base, the marking unit (4) is fixedly connected to the frame (1), and the marking unit (4) has the function of marking defective filters; The shielding unit (3) comprises a fixed cylinder (31), an inclined slide plate (32), a push block (33), a second telescopic rod (34), a return spring (35), an arc-shaped soft plate (36) and a shielding cloth (37); the fixed cylinder (31) is fixedly mounted on one end of the vertical plate (11) close to the detection unit (2); one end of the inclined slide plate (32) is fixedly mounted on the inner surface of the fixed cylinder (31); two adjacent inclined slide plates (32) are fixedly mounted with a shielding cloth (37); the fixed end of the second telescopic rod (34) is mounted on the inner surface of the fixed cylinder (31); the telescopic end of the second telescopic rod (34) is slidably connected to the push block (33); the push block (33) is fixedly connected to the return spring (35); the return spring (35) is mounted inside the arc-shaped soft plate (36); and the arc-shaped soft plate (36) is connected to the fixed cylinder (31) via the shielding cloth (37).

2. The filter coupling detection device capable of multi-point detection according to claim 1, characterized in that: The detection unit (2) comprises a telescopic rod (21), a mounting box (22), a motor (23), a driving gear (24), a driven gear (25), a gear ring (26), a connecting rod (27), a transmission plate (28), a buffer spring (29), a slider (210), a light source (211), a support tube (212), a photoresistor (213), a reflective lens (214), a rotating column (215), a first memory spring (216) and a second memory spring (217); the telescopic end of the telescopic rod (21) is fixedly connected to the vertical plate (11); the fixed end of the telescopic rod (21) is fixedly connected to the mounting box (22); the mounting box (22) is fixedly mounted on a surface of an end of the frame (1) away from the horizontal base; the motor ( The motor (23) has a fixed end fixedly mounted inside the mounting box (22), the output end of the motor (23) is fixedly connected to the driving gear (24), the driving gear (24) is meshedly connected to the driven gear (25), the driven gear (25) is rotatably mounted on a long rod at the fixed end of the motor (23), the driven gear (25) is meshedly connected to the ring gear (26), the outer surface of the ring gear (26) is fixedly connected to the middle of the connecting rod (27), one end of the connecting rod (27) is rotatably connected to the mounting box (22), and the other end is fixedly connected to the transmission plate (28), the transmission plate (28) is provided with a rectangular groove, one end of the buffer spring (29) is fixedly connected to the inner wall of the groove of the transmission plate (28) away from the central axis, and the other end is fixedly connected to the slider (210 ) are fixedly connected, the transmission plate (28) is evenly provided with a plurality of groups of circular through holes along the groove, the light source (211) is fixedly installed between the gear ring (26) and the transmission plate (28), an opaque soft film is arranged above the buffer spring (29), when the slider (210) is parallel to the vertical axis, the number of circular through holes blocked by the lower slider (210) is less than the number of circular through holes blocked by the upper slider (210), the support tube (212) is fixedly installed at one end of the frame (1) away from the horizontal base, the photoresistor (213) is fixedly installed on the outer surface of one end of the support tube (212) close to the motor (23), there are a plurality of reflective lenses (214), and the reflective lenses (214) rotate with the rotating column (215) The support tube (212) is connected, in the horizontal direction, a sliding groove is provided on the inner surface thereof, and both ends of the rotating column (215) are slidably connected to the sliding groove of the support tube (212). One end of the first memory spring (216) is fixedly connected to the inner wall of the support tube (212), and the other end is fixedly connected to the rotating column (215). One end of the second memory spring (217) is fixedly connected to the inner wall of the support tube (212), and the other end is fixedly connected to the rotating column (215). The inner surface of one end of the support tube (212) close to the horizontal foundation is evenly provided with sliding grooves, and each sliding groove is arranged at intervals below the rotating column (215). The rotating column (215) connected to the first memory spring (216) is slidably installed in the sliding groove of the support tube (212).The rotating column (215) connected to the second memory spring (217) is slidably mounted in the sliding groove of the supporting cylinder (212).

3. The filter coupling detection device capable of multi-point detection according to claim 1, characterized in that: The marking unit (4) comprises a telescopic rod (41), a guide plate (42), a movable plate (43), a storage box (44), a magnetic block (45), a pull rope (46), a guide column (47), a reel (48), a stirring rod (49), a torsion spring (410), a nozzle (411), a guide column (412), a compression spring (413), a marking pen (414), a box (415) and a receiver (416), wherein the box (415) is fixedly mounted on the frame (1) away from the horizontal foundation. The telescopic rod (41) is fixedly connected to the inner wall of the receiving box (44) at one end away from the detection unit (2), and the other end is fixedly connected to the moving plate (43). The moving plate (43) is provided with a rectangular through hole. A rectangular cavity is provided directly above the rectangular through hole of the moving plate (43). The guide plate (42) is slidably connected to the rectangular through hole of the moving plate (43). The guide plate (42) is fixedly mounted on the inner walls of both sides of the receiving box (44) parallel to the horizontal axis. The receiving box (44) is provided with a plurality of movable plates (43). ) is fixedly mounted on the inner surface of one end of the box body (415) away from the horizontal base, the containing box (44) contains red ink, the magnetic block (45) is installed in the rectangular cavity of the movable plate (43), one end of the pull rope (46) is fixedly connected to the magnetic block (45), and the other end is fixedly connected to the winding tube (48) by bypassing the guide column (47), and the winding tube (48) is rotatably connected to the movable plate (43) through the torsion spring (410), and one end of the stirring rod (49) is fixedly connected to the winding tube (48). The nozzle (411) is electrically connected to the containing box (44), the guide column (412) is fixedly mounted at both ends of the nozzle (411) parallel to the horizontal axis, one end of the compression spring (413) is fixedly connected to the fixing ring on the left side of the nozzle (411), and the other end is fixedly connected to the marking pen (414), the marking pen (414) is slidably mounted inside the nozzle (411), and the receiver (416) is fixedly mounted inside the box (415).

4. The filter coupling detection device capable of multi-point detection according to claim 1, characterized in that: The shielding cloth (37) is made of opaque cloth.

5. The filter coupling detection device capable of multi-point detection according to claim 3, characterized in that: The surface of one end of the guide plate (42) away from the horizontal base is evenly provided with a plurality of groups of grooves, an electromagnet having the same magnetic property as the magnetic block (45) is arranged between adjacent grooves, and an electromagnet having the opposite magnetic property to the magnetic block (45) is arranged inside the groove.

6. The filter coupling detection device capable of multi-point detection according to claim 3, characterized in that: The torsion spring (410) drives the reel tube (48) to rotate to a maximum angle of 60 degrees, and the torsion spring (410) is initially in a stretched state.

7. The filter coupling detection device capable of multi-point detection according to claim 3, characterized in that: A heater is arranged inside the nozzle (411).

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