An industrial visual sorting machine based on a one-to-three infrared camera module

Abstract

The present invention discloses an industrial visual sorting machine based on a one-to-three infrared camera module, comprising a loader and an optical sorting mechanism, wherein the optical sorting mechanism is arranged outside the loader, the optical sorting mechanism comprises a sorting chamber and an optical module, and the optical module is arranged inside the sorting chamber; the optical module comprises two groups of left and right infrared light sources, each group of the infrared light sources is provided with two upper and lower ones, the two infrared light sources of each group intersect on the blanking track to form a viewing point, and two dichroic mirrors are provided on the diffuse reflection track of the infrared rays based on the viewing point, and three camera circuit boards are respectively provided on the reflection and refraction paths of the dichroic mirrors, and the input ends of the three camera circuit boards are electrically connected to photoelectric sensors. The present invention relates to the technical field of sorting machines, and solves the problems of high cost and low sorting efficiency of existing sorting machines, or few identification types, resulting in limited sorting needs.

Description

Technical Field

[0001] The present invention relates to the technical field of sorting machines, and in particular to an industrial vision sorting machine based on a one-to-three infrared camera module. Background Art

[0002] There are two existing methods for plastic color sorting. One uses an infrared hyperspectral camera or infrared spectrometer to obtain spectral signals across the entire infrared band of the plastic. This can generate infrared spectral information across dozens or even hundreds of bands, enabling identification of a wide range of plastic materials with high accuracy. The other uses two infrared cameras to obtain spectral signals from two infrared bands and then identifies the plastic material based on the ratio or difference between the two signals. The advantages of this method are relatively low cost, low data processing volume, and high sorting efficiency.

[0003] Both of the above methods have certain defects in actual use. The former is due to the high prices of infrared hyperspectral cameras and infrared spectrometers, which leads to the high cost of such color sorters, and the large number of processes leads to reduced sorting efficiency. The latter can only recognize spectral information of two infrared bands, and the types of plastic materials that can be recognized are limited. It is difficult to cope with complex plastic material sorting scenarios. Therefore, it is necessary to solve the shortcomings of existing technologies. Summary of the Invention

[0004] In response to the shortcomings of the existing technology, the present invention provides an industrial visual sorting machine based on a one-to-three infrared camera module, which solves the problems of high cost, low sorting efficiency, or limited recognition types of existing sorting machines, resulting in limited sorting needs.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an industrial visual sorting machine based on a one-to-three infrared camera module, comprising a feeder,

[0006] An optical sorting mechanism, which is arranged outside the loader and includes a sorting chamber and an optical module, and the optical module is arranged inside the sorting chamber;

[0007] The optical module includes two groups of left and right infrared light sources, each group of infrared light sources is provided with two upper and lower infrared light sources, the two infrared light sources of each group intersect on the blanking trajectory to form a viewing point, and two dichroic mirrors are provided on the diffuse reflection trajectory of infrared rays based on the viewing point, and three camera circuit boards are respectively provided on the reflection and refraction paths of the dichroic mirrors, the input ends of the three camera circuit boards are electrically connected to photoelectric sensors, the outsides of the three camera circuit boards are provided with infrared lenses, and the three infrared lenses are provided with filters;

[0008] The protective component is arranged outside the optical module and shields the outside of the optical module through movement.

[0009] Preferably, the interior of the sorting chamber is connected to the output end of the loader, the interior of the sorting chamber is respectively connected with a good product discharge hopper and a waste product discharge hopper, and the interior of the sorting chamber is provided with an air jet valve.

[0010] Preferably, the protective component includes a baffle, which is arranged on the outside of the optical module, and the outer surface of the baffle is fixedly connected to a telescopic rod, one end of the telescopic rod is fixedly connected to the interior of the sorting chamber, and the outer surface of the baffle is fixedly connected to a steel belt, and the outer surface of the steel belt is movably connected to a fixed pulley, and the outer surface of the fixed pulley is fixedly connected to the interior of the sorting chamber.

[0011] Preferably, the outer surface of the baffle is fixedly connected to a fixing strip, and the fixing strip is respectively arranged on the outside of the dichroic mirror and the filter. The outer surface of the fixing strip is covered with a cloth bag, and the outer surface of the cloth bag is movably connected to the outer surface of the dichroic mirror and the filter.

[0012] Preferably, the bag opening of the cloth bag is embedded and fixedly connected with a steel ring, the outer surface of the fixed bar is rotatably connected with a rotating bar, and the outer surface of the rotating bar abuts against the outer surface of the steel ring.

[0013] Preferably, a traction unit is provided at one end of the steel belt, and the traction unit includes a slide cylinder, the outer surface of the slide cylinder is fixedly connected to the interior of the sorting chamber, the body of the slide cylinder is slidably connected with a slide rod, the other end of the slide rod is fixedly connected to one end of the steel belt, the outer surface of the slide rod is fixedly connected with a sealing plate, and the outer surface of the sealing plate is movably connected to the interior of the slide cylinder.

[0014] Preferably, two air pipes are connected through the interior of the slide, a solenoid valve is provided on the outside of one of the air pipes, and an end of the other air pipe is connected to an air pump.

[0015] Preferably, a compression spring is sleeved on the outside of the sliding rod, and two ends of the compression spring are fixedly connected to the inside of the sliding cylinder and the outer surface of the sealing plate respectively.

[0016] Preferably, a blocking structure is provided at one end of the sliding rod, and the blocking structure includes two plywood, and the outer surfaces of the two plywood are fixedly connected to push plates, and the outside of the push plates is provided with an oblique bar, and the body of the oblique bar is provided with a through guide groove, and the inside of the guide groove is slidably connected to a guide bar, and one end of the guide bar is fixedly connected to the outer surface of the push plate.

[0017] Preferably, the outer surface of the oblique bar is movably connected to a connecting plate, the outer surface of the connecting plate is fixedly connected to one end of the sliding rod, the body of the connecting plate is provided with a wedge groove, the inside of the wedge groove is slidably connected to a pin rod, the body of the oblique bar is provided with a through sliding groove, the outer surface of the pin rod is slidably connected to the inside of the sliding groove, and one end of the pin rod is fixedly connected to the outer surface of the guide bar.

[0018] Beneficial effects

[0019] The present invention provides an industrial visual sorting machine based on a one-to-three infrared camera module. Compared with the existing technology, it has the following advantages:

[0020] (1) By setting up an optical module, two dichroic mirrors are used to split the light beam into three on the diffuse reflection trajectory of the light. By obtaining the mutual ratio or difference of the three-band spectral signals, the plastic material recognition range can be effectively expanded, the sorting efficiency can be improved, and the sorting cost can be reduced.

[0021] (2) By setting up a protective component and driving the baffle to move through the telescopic rod, the outer side of the optical module can be buffered and protected, avoiding the problem of damage to the dichroic mirror and filter caused by collision with foreign objects. The cloth bag can also clean the dichroic mirror and filter, and by keeping the surface clean, the sorting accuracy and service life can be improved.

[0022] (3) By setting up a traction unit, an air pump is used to fill the inside of the slide tube with external air, and the air pressure pushes the sealing plate to move, so that the slide rod pulls the steel belt to move, thereby driving the baffle to move and protect the optical module. At the same time, the air and spring elastic force further act as buffer damping to improve the protective performance of the baffle.

[0023] (4) By setting up a blocking structure and using the connecting plate to follow the synchronous movement of the sliding rod, the relative position of the pin rod inside the wedge groove is changed, so that the displacement difference of the pin rod position change parameter is used to push the closing plate to move through the guide bar and the push plate, and the optical diffuse reflection trajectory is blocked by closing the two closing plates to prevent objects from splashing in this direction and causing damage to the dichroic mirror surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a front view of the internal structure of the present invention;

[0025] Figure 2 is a schematic diagram of an optical module of the present invention;

[0026] Figure 3 A three-dimensional diagram of the external structure of the baffle of the present invention;

[0027] Figure 4 A three-dimensional diagram of the external structure of the fixing strip of the present invention;

[0028] Figure 5 A three-dimensional diagram of the internal structure of the slide of the present invention;

[0029] Figure 6 It is a three-dimensional diagram of the external structure of the connecting plate of the present invention.

[0030] In the figure: 1. Loader; 2. Sorting chamber; 3. Optical module; 31. Infrared light source; 32. Viewpoint; 33. Dichroic mirror; 34. Camera circuit board; 35. Photoelectric sensor; 36. Infrared lens; 37. Filter; 4. Protective assembly; 41. Baffle; 42. Telescopic rod; 43. Steel belt; 44. Traction unit; 441. Slide; 442. Slide rod; 443. Blocking structure; 4431. Plywood; 4432. Push Plate; 4433, oblique strip; 4434, guide groove; 4435, guide strip; 4436, connecting plate; 4437, wedge groove; 4438, pin rod; 4439, slide; 444, sealing plate; 445, air pipe; 446, solenoid valve; 447, air pump; 448, compression spring; 45, fixed pulley; 46, fixing strip; 47, cloth bag; 48, steel ring; 49, rotating strip; 5, good product discharge hopper; 6, waste product discharge hopper; 7, jet valve. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0032] See also Figure 1-6 The present invention provides a technical solution: an industrial visual sorting machine based on a one-to-three infrared camera module:

[0033] Example 1: Refer to the attached manual Figure 1 , Attachment Figure 2 ;

[0034] The utility model comprises a feeder 1, which is composed of an existing vibrating feeder, a material trough and a frame. An optical sorting mechanism is arranged on the outside of the feeder 1, and the optical sorting mechanism comprises a sorting chamber 2 and an optical module 3. The sorting chamber 2 is arranged on the outside of the feeder 1, and the interior of the sorting chamber 2 is connected with the output end of the feeder 1. The optical module 3 is arranged on the inside of the sorting chamber 2. A protective component 4 is arranged on the outside of the optical module 3. A discharge hopper is connected with the interior of the sorting chamber 2. There are two discharge hoppers, namely a good discharge hopper 5 and a waste discharge hopper 6. An air jet valve 7 is arranged on the inside of the sorting chamber 2 and on the outside of the feed end of the discharge hopper. The optical module 3 comprises two left and right groups of infrared light sources 31, each group of infrared light sources 31 is provided with two, and the two infrared light sources 31 of each group are tilted so that the infrared light beams of the two are in the air jet valve. 7 and the discharge end of the feeder 1 intersect to form a viewing point 32, which is the irradiation point where the plastic is color-selected. The viewing point 32 is on the blanking trajectory, and two dichroic mirrors 33 are arranged along the diffuse reflection trajectory of the infrared light beam. The dichroic mirrors 33 are tilted on the diffuse reflection trajectory of the light beam to facilitate splitting the light beam by reflection, and the cut-off wavelengths of the two dichroic mirrors 33 are 1100nm and 1500nm respectively. Three camera circuit boards 34 are respectively arranged on the reflection and refraction paths of the two dichroic mirrors 33, and the input ends of the three camera circuit boards 34 are electrically connected to photoelectric sensors 35. The outside of the three camera circuit boards 34 is provided with infrared lenses 36, and the three infrared lenses 36 are provided with filters 37. The center wavelength of the filter 37 is set and replaced according to actual needs.

[0035] In this embodiment, the plastic to be sorted falls to the viewing point 32 after being fed by the feeder 1. At this time, the infrared rays emitted by each group of two infrared light sources 31 intersect at the viewing point 32 and irradiate the plastic. A beam of light diffusely reflected by the plastic is incident on the front surface of the first dichroic mirror 33 and is split into two beams by the first dichroic mirror 33. The reflected light with a wavelength less than the cut-off wavelength of 1100 nm is irradiated on the filter 37 corresponding to the first dichroic mirror 33, and then imaged on the photoelectric sensor 35 of the camera circuit board 34 through the corresponding infrared lens 36; while the reflected light with a wavelength greater than the cut-off wavelength of 1100 nm is imaged on the photoelectric sensor 35 of the camera circuit board 34. A beam of transmitted light with a cutoff wavelength of 1100nm is refracted and irradiated onto the front surface of the second dichroic mirror 33, and a beam of reflected light with a wavelength less than the cutoff wavelength of 1500nm is irradiated onto a filter 37 outside the second dichroic mirror 33, and then imaged onto the photoelectric sensor 35 of the camera circuit board 34 through the corresponding infrared lens 36; and a beam of transmitted light with a wavelength greater than the cutoff wavelength of 1500nm is refracted and irradiated onto another filter 37 outside the second dichroic mirror 33, and then imaged onto the camera circuit board 34 through the corresponding infrared lens 36. On the photoelectric sensor 35, two sets of dichroic mirrors 33 divide the light diffusely reflected from the plastic into three beams, which are imaged by three infrared cameras respectively. The wavelength ranges are less than 1100nm, 1100nm~1500nm, and greater than 1500nm. However, this wavelength range is still relatively wide. We also need to use three filters 37 to extract the infrared "fingerprint" of the plastic. The filter 37 is a device that extracts narrowband spectral signals. We can set different wavelengths of the filter 37 according to the characteristics of the plastic. Assuming that the center wavelength of the filter 37 is They are 1000nm, 1300nm and 1600nm respectively. Then, through this one-to-three infrared camera module, we can obtain the three-segment infrared "fingerprint" spectral information of plastics at 1000nm, 1300nm and 1600nm at one time. By calculating the pairwise ratios or pairwise differences of these three spectral signals, we can get three groups of ratios or three groups of differences. Compared with a group of ratios or a group of differences in the two-band sorting method, the information obtained is more complete, and the types of plastic materials that can be identified and sorted are also richer, which can basically cover the types of most waste plastics.

[0036] Example 2: Based on Example 1, refer to the attached Figure 3 , Attachment Figure 4 ;

[0037] The protective component 4 includes a baffle 41, the cross section of which covers the entire outer side of the optical module 3 to achieve a comprehensive shielding effect, thereby preventing objects from the outside from contacting the optical module 3 and causing damage to the optical module 3. A camera is provided on the outside of the baffle 41 to identify and monitor external splashes. The baffle 41 is provided on the outside of the optical module 3. The outer surface of the baffle 41 is fixedly connected with a telescopic rod 42. The telescopic rod 42 is made of a spring rod. The elastic expansion and contraction can not only buffer the external impact, but also facilitate the movement of the baffle 41 to shield the optical module 3. The expansion and contraction direction of the telescopic rod 42 is perpendicular to the diffuse reflection direction. One end of the telescopic rod 42 is fixedly connected to the interior of the sorting chamber 2. The outer surface of the baffle 41 is fixedly connected with a steel belt 43. The flexibility and hardness of the steel belt 43 can facilitate the improvement of service life, and the baffle 41 can be pulled close to the optical module 3 for protection by changing the positions of the two ends. The outer surface of the steel belt 43 is movably connected with a fixed pulley 45. The fixed pulley 45 The outer surface of the fixed pulley 45 is fixedly connected to the interior of the sorting chamber 2, and the outer surface of the baffle 41 is fixedly connected to a fixed strip 46, which is respectively arranged on the outside of the dichroic mirror 33 and the filter 37. The outer surface of the fixed strip 46 is provided with a cloth bag 47, which can be made of a cleaning material. On the one hand, it can avoid the wear caused by the direct contact of the fixed strip 46, and on the other hand, it can play a cleaning role, thereby improving the accuracy of the optical module 3. The outer surface of the cloth bag 47 is movably connected to the outer surface of the dichroic mirror 33 and the filter 37, respectively. The bag mouth of the cloth bag 47 is embedded in a fixed connection with a steel ring 48. The steel ring 48 plays the role of wrapping and improving the connection stability, and an opening is provided on one side. The outer surface of the fixed strip 46 is rotatably connected to a rotating strip 49. The rotating strip 49 rotates inside the steel ring 48 to facilitate the disassembly and replacement of the cloth bag 47, and the length of the rotating strip 49 is greater than the inner length of the opening of the steel ring 48, and the width is less than the inner length of the opening. The outer surface of the rotating strip 49 abuts against the outer surface of the steel ring 48.

[0038] In this embodiment, the cloth bag 47 is first sleeved on one end of the fixed strip 46, and the rotating strip 49 is set vertically during the sleeve so as to enter the inside of the steel ring 48 through the opening. After the cloth bag 47 is sleeved, the rotating strip 49 is rotated inside the steel ring 48. By changing the positions of its two ends, the cloth bag 47 is fixed by abutting the steel ring 48. At the same time, when the camera on the baffle 41 detects splashes in the direction of the optical diffuse reflection trajectory, one end of the steel belt 43 moves to pull the baffle 41 to move close to the optical module 3 to protect it, and at the same time compresses the output end of the telescopic rod 42 so as to reset the baffle 41 by rebounding, and the fixed strip 46 drives the cloth bag 47 to move and contact the surface of the dichroic mirror 33 and the filter 37 to play a role in contact protection and cleaning.

[0039] Example 3: Based on Example 2, refer to the attached Figure 3 , Attachment Figure 5 ;

[0040] A traction unit 44 is provided at one end of the steel belt 43. The traction unit 44 includes a slide 441. The slide 441 is fixed to the interior of the sorting chamber 2 through its attached base. The outer surface of the slide 441 is fixedly connected to the interior of the sorting chamber 2. The body of the slide 441 is slidably connected with a slide rod 442. The other end of the slide rod 442 is fixedly connected to one end of the steel belt 43. The outer surface of the slide rod 442 is fixedly connected with a sealing plate 444. The sealing plate 444 is made of an existing rubber piston. The outer surface of the sealing plate 444 is movably connected to the interior of the slide 441. The interior of the slide 441 is connected through two air pipes 445. The two air pipes 446 are connected. 45 are used for air intake and exhaust respectively, wherein the air pipe 445 for air intake is made of a one-way valve, an electromagnetic valve 446 is provided on the outside of one of the air pipes 445, and one end of the other air pipe 445 is connected to an air pump 447, the electromagnetic valve 446 and the air pump 447 are both connected to the external control circuit wires to control the air intake and exhaust inside the slide 441, and the outer sleeve of the slide rod 442 is provided with a compression spring 448, which further improves the performance of the telescopic rod 42 by its own rebound and reduces the fatigue of the telescopic rod 42, and the two ends of the compression spring 448 are fixedly connected to the interior of the slide 441 and the outer surface of the sealing plate 444 respectively.

[0041] In this embodiment, when splashing objects are detected, the air pump 447 works to pump outside air into the slide cylinder 441 through an air pipe 445, and pushes the slide rod 442 to move through the sealing plate 444 to stretch the steel belt 43, so that the baffle 41 follows the movement to protect the optical module 3. At the same time, the sealing plate 444 compresses the compression spring 448 so that the slide rod 442 is reset through the rebound of the compression spring 448, thereby reducing the performance loss of the telescopic rod 42.

[0042] Example 4: Based on Example 3, refer to the attached Figure 3 , Attachment Figure 6 ;

[0043] One end of the slide bar 442 is provided with a blocking structure 443, which includes two plywood 4431. The outer surfaces of the two plywood 4431 are fixedly connected with push plates 4432. The push plates 4432 slide along their own center lines to push the two plywood 4431 to close. The two sets of push plates 4432 and the plywood 4431 are trapezoidal when closed. The outer surface of the push plates 4432 is provided with an oblique bar 4433. The body of the oblique bar 4433 is provided with a through guide groove 4434. The inner part of the guide groove 4434 is slidably connected with a guide bar 4435. The guide bar 4435 can improve the stability of the movement of the plywood 4431. One end of the guide bar 4435 is fixedly connected to the outer surface of the push plate 4432 The outer surface of the oblique bar 4433 is movably connected with a connecting plate 4436, and the outer surface of the connecting plate 4436 is fixedly connected to one end of the sliding rod 442. The body of the connecting plate 4436 is provided with a wedge groove 4437, which is inclined and increases the lateral driving force by the displacement difference on both sides of the interior. The interior of the wedge groove 4437 is slidably connected with a pin rod 4438, and the body of the oblique bar 4433 is provided with a through sliding groove 4439. The width of the sliding groove 4439 is smaller than the width of the guide groove 4434 to limit the guide bar 4435. The outer surface of the pin rod 4438 is slidably connected to the interior of the sliding groove 4439, and one end of the pin rod 4438 is fixedly connected to the outer surface of the guide bar 4435.

[0044] In this embodiment, when the slide rod 442 slides, it pushes the connecting plate 4436 to move synchronously. The movement of the connecting plate 4436 changes the relative position of the pin rod 4438 inside it, and pushes the pin rod 4438 to move synchronously inside the slide groove 4439 through the displacement difference and oblique abutment, and pushes the guide bar 4435 to follow the synchronous movement, so that the push plate 4432 pushes the closing plate 4431 to move and close. The diffuse reflection trajectory of the light is blocked by the closing of the two closing plates 4431, thereby blocking the splashes from this direction, and buffering is performed through the air damping effect to reduce the kinetic energy of the splashes, thereby achieving double protection for the optical module 3.

[0045] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0046] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An industrial visual sorting machine based on a one-to-three infrared camera module, comprising a loader (1), characterized in that: An optical sorting mechanism, the optical sorting mechanism being arranged outside the feeder (1), the optical sorting mechanism comprising a sorting chamber (2) and an optical module (3), the optical module (3) being arranged inside the sorting chamber (2); The optical module (3) includes two groups of left and right infrared light sources (31), each group of the infrared light sources (31) is provided with two upper and lower ones, the two infrared light sources (31) of each group intersect on the blanking track to form a viewing point (32), and two dichroic mirrors (33) are provided on the diffuse reflection track of the infrared rays based on the viewing point, and three camera circuit boards (34) are respectively provided on the reflection and refraction paths of the dichroic mirrors (33), the input ends of the three camera circuit boards (34) are electrically connected to the photoelectric sensors (35), the outsides of the three camera circuit boards (34) are provided with infrared lenses (36), and the three infrared lenses (36) are provided with filters (37); A protective component (4) is provided outside the optical module (3) and shields the outside of the optical module (3) by movement. The protective component (4) includes a baffle (41), the baffle (41) is provided outside the optical module (3), a telescopic rod (42) is fixedly connected to the outer surface of the baffle (41), one end of the telescopic rod (42) is fixedly connected to the inside of the sorting chamber (2), and a steel belt (43) is fixedly connected to the outer surface of the baffle (41). The outer surface of the belt (43) is movably connected to a fixed pulley (45), and the outer surface of the fixed pulley (45) is fixedly connected to the interior of the sorting chamber (2). The outer surface of the baffle (41) is fixedly connected to a fixed strip (46), and the fixed strip (46) is respectively arranged outside the dichroic mirror (33) and the filter (37). The outer surface of the fixed strip (46) is provided with a cloth bag (47), and the outer surface of the cloth bag (47) is movably connected to the outer surface of the dichroic mirror (33) and the outer surface of the filter (37).

2. The industrial visual sorting machine based on the one-to-three infrared camera module according to claim 1, characterized in that: The interior of the sorting chamber (2) is connected to the output end of the feeder (1), and a good product discharge hopper (5) and a waste product discharge hopper (6) are respectively connected through the interior of the sorting chamber (2), and an air jet valve (7) is provided inside the sorting chamber (2).

3. The industrial visual sorting machine based on the one-to-three infrared camera module according to claim 1, characterized in that: The bag opening of the cloth bag (47) is embedded in and fixedly connected to a steel ring (48), and the outer surface of the fixed strip (46) is rotatably connected to a rotating strip (49), and the outer surface of the rotating strip (49) abuts against the outer surface of the steel ring (48).

4. The industrial visual sorting machine based on the one-to-three infrared camera module according to claim 1, characterized in that: A traction unit (44) is provided at one end of the steel belt (43), and the traction unit (44) includes a slide (441), the outer surface of the slide (441) is fixedly connected to the interior of the sorting chamber (2), the body of the slide (441) is slidably connected to a slide rod (442), the other end of the slide rod (442) is fixedly connected to one end of the steel belt (43), the outer surface of the slide rod (442) is fixedly connected to a sealing plate (444), and the outer surface of the sealing plate (444) is movably connected to the interior of the slide (441).

5. The industrial visual sorting machine based on the one-to-three infrared camera module according to claim 4, characterized in that: The interior of the slide (441) is connected to two air pipes (445), one of which is provided with an electromagnetic valve (446) on the outside, and one end of the other air pipe (445) is connected to an air pump (447).

6. The industrial visual sorting machine based on the one-to-three infrared camera module according to claim 4, characterized in that: The outer portion of the slide rod (442) is provided with a compression spring (448), and the two ends of the compression spring (448) are fixedly connected to the inner portion of the slide cylinder (441) and the outer surface of the sealing plate (444), respectively.

7. The industrial visual sorting machine based on the one-to-three infrared camera module according to claim 4, characterized in that: A blocking structure (443) is provided at one end of the slide rod (442), and the blocking structure (443) includes two plywoods (4431), and the outer surfaces of the two plywoods (4431) are fixedly connected to a push plate (4432), and an oblique bar (4433) is provided on the outside of the push plate (4432), and the body of the oblique bar (4433) is provided with a through guide groove (4434), and the inside of the guide groove (4434) is slidably connected to a guide bar (4435), and one end of the guide bar (4435) is fixedly connected to the outer surface of the push plate (4432).

8. The industrial visual sorting machine based on the one-to-three infrared camera module according to claim 7, characterized in that: The outer surface of the inclined bar (4433) is movably connected to a connecting plate (4436), the outer surface of the connecting plate (4436) is fixedly connected to one end of the sliding rod (442), the body of the connecting plate (4436) is provided with a wedge groove (4437), the interior of the wedge groove (4437) is slidably connected to a pin rod (4438), the body of the inclined bar (4433) is provided with a through sliding groove (4439), the outer surface of the pin rod (4438) is slidably connected to the interior of the sliding groove (4439), and one end of the pin rod (4438) is fixedly connected to the outer surface of the guide bar (4435).

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