A coaxiality detection device and detection method for photoelectric detector

Abstract

The present invention relates to the detection field, in particular to a coaxiality detection device for a photoelectric detector, comprising a detector body and a workpiece to be detected, the coaxiality detection device comprising a containing mechanism for fixing the detector body, a driving mechanism fixedly installed inside the containing mechanism, a limiting mechanism provided on the driving mechanism, an interference mechanism fixedly installed between the containing mechanism and the driving mechanism, the driving mechanism comprising a transmission belt composed of two belt bodies, a slit is provided between the two belt bodies, the two belt bodies are connected by a plurality of fixing frames, the setting of the driving mechanism in the device can effectively drive the limiting mechanism to move, and the workpiece to be detected can be temporarily limited during the movement of the limiting mechanism, so as to achieve the effect of continuous detection, so that the workpiece to be detected can be better detected.

Description

Technical Field

[0001] The invention relates to the detection field, in particular to a coaxiality detection device and a detection method for a photoelectric detector. Background Art

[0002] The structure of the photodetector requires the chip and shell to be processed separately during production, and then the chip and shell are bonded into a whole with glue to form the overall structure of the photodetector. Errors are inevitable in the bonding operation. In order to ensure the detection accuracy of the photodetector, the installation coaxiality of the shell and chip on the photodetector must be tested before leaving the factory, so as to screen out defective products and ensure product quality.

[0003] During the detection process of the photoelectric detector, the workpiece to be detected needs to be limited by a fixture, and the limited workpiece to be detected is moved to the bottom of the detection end of the detection equipment for coaxiality detection. However, during the detection process, the fixture needs to be moved continuously to alternately place the workpiece to be detected, which affects the detection efficiency of the workpiece to be detected. Therefore, we design a coaxiality detection device and detection method for photoelectric detectors to perform continuous detection of the workpiece to be detected and improve the detection efficiency. Summary of the invention

[0004] In view of the fact that the coaxiality detection devices and detection methods for photoelectric detectors mentioned above or in the prior art need to alternately place the workpieces to be detected during the detection process, which affects the detection efficiency of the workpieces to be detected, the present invention is proposed.

[0005] Therefore, an object of the present invention is to provide a coaxiality detection device and a detection method for a photoelectric detector.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: a coaxiality detection device for a photoelectric detector, comprising a detector body and a workpiece to be detected, the coaxiality detection device comprising a containing mechanism for fixing the detector body, a driving mechanism fixedly installed inside the containing mechanism, a limiting mechanism provided on the driving mechanism, and an interference mechanism fixedly installed between the containing mechanism and the driving mechanism, the driving mechanism comprising a conveyor belt composed of two belt bodies, a slit provided between the two belt bodies, and the two belt bodies are connected by a plurality of fixing frames; the limiting mechanism comprises an entry groove provided on the conveyor belt and an installation groove provided on one side of the slit, a connecting frame is slidably connected inside the installing groove, an interference frame and a retaining frame are respectively fixedly connected to the connecting frame, a clamping pad is fixedly connected inside the retaining frame, and a placement groove is provided on the top of the retaining frame.

[0007] As a preferred solution of the coaxiality detection equipment for photoelectric detectors of the present invention, the limiting mechanism also includes blocking pads fixedly installed at the upper and lower ends of the mounting groove, and the connecting frame is connected to the mounting groove by a first spring; the retention frame is away from one end of the interference frame, and the length of its support foot is greater than the support foot at the other end, both ends of the retention frame are located in the slit, and a gap is left between the bottom of the interference frame and the conveyor belt.

[0008] As a preferred solution of the coaxiality detection equipment for photoelectric detectors of the present invention, the interference mechanism includes a interference box fixed between the accommodating mechanism and the interference frame, a slide is fixedly connected to the inside of the interference box through a second spring, and a interference groove and an inclined groove are respectively provided at one end of the slide close to the interference frame, and an inclined block is fixedly connected to the transmission belt corresponding to the inclined groove.

[0009] As a preferred solution of the coaxiality detection device for photoelectric detectors of the present invention, the cross-section of the interference box is rectangular, the interference box is slidably connected to the slide plate, the interference groove is matched with the interference frame, and the inclined surface of the inclined block is matched with the inclined groove.

[0010] As a preferred solution of the coaxiality detection equipment for photoelectric detectors of the present invention, the accommodating mechanism includes a accommodating box, a material collection box is slidably connected inside the accommodating box, the accommodating box is located on the top of the conveyor belt and is fixedly connected to a loading bracket, a built-in groove is opened on the loading bracket, and the workpiece to be detected is located in the built-in groove.

[0011] As a preferred solution of the coaxiality detection equipment for photoelectric detectors of the present invention, the feeding bracket is adapted to the limiting mechanism, a gap is left between the bottom of the feeding bracket and the top of the retaining rack, and the bottom pin of the workpiece to be detected is adapted to the clamping pad inside the retaining rack.

[0012] As a preferred solution of the coaxiality detection device for the photoelectric detector of the present invention, the material collection box is located at the bottom of the conveyor belt, and a good product accommodating chamber and a waste product accommodating chamber are respectively provided inside the material collection box.

[0013] As a preferred solution of the coaxiality detection equipment for photoelectric detectors of the present invention, the driving mechanism also includes a motor fixed on the containing box, the driving end of the motor passes through the containing box and is fixedly connected to a driving roller, the driving roller is connected to a transmission belt, and the other end of the transmission belt is connected to the containing box through a driven roller.

[0014] As a preferred solution of the coaxiality detection device for the photoelectric detector of the present invention, the driving roller and the driven roller are both located inside the transmission belt, and a gap is left between the motor driving end and the accommodating box.

[0015] A detection method, applied to the coaxiality detection device of the above-mentioned photoelectric detector, the method comprising: S1, start the conveyor belt, and when the entry slot in the conveyor belt passes through the built-in slot on the loading bracket, place the photoelectric detector body in the built-in slot; S2, the conveyor belt drives the storage rack to move, and takes the photoelectric detector body away from the built-in slot and drops it into the placement slot on the storage rack; S3, the conveyor belt drives the storage rack and the photoelectric detector body to move to the bottom of the detector body; S4, the limiting mechanism temporarily limits the photoelectric detector body, so that the detector body detects the photoelectric detector body; S5. After the detection is completed, if the product is good, the good product containing chamber in the material collection box is moved to the bottom of the conveyor belt. Otherwise, the waste product containing chamber is moved to the bottom of the conveyor belt. When the conveyor belt moves the detector body to the top of the material collection box, the detector body falls into the material collection box under the action of its own weight.

[0016] Beneficial effects of the present invention: The setting of the driving mechanism in the device can effectively drive the limit mechanism to move, and the limit mechanism can temporarily limit the workpiece to be inspected during the movement process, so as to achieve the effect of continuous inspection, so that the workpiece to be inspected can be better inspected; The setting of the interference groove can interfere with the interference frame. After the interference frame is interfered, the workpiece to be detected is in a static state relative to the detector body. The inclined block interferes with the inclined groove, and the inclined block can effectively break the static state of the workpiece to be detected. At this time, a detection operation can be completed, and continuous detection is performed in this way. The action switching is continuous, and the triggering and releasing of the static operation are stable, which can improve the efficiency of continuous detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the coaxiality detection equipment used for the photoelectric detector.

[0019] Figure 2 It is a schematic diagram of the driving mechanism and limiting mechanism of the coaxiality detection device for the photoelectric detector.

[0020] Figure 3 Schematic diagram of the transmission belt of the coaxiality detection equipment used for photoelectric detectors.

[0021] Figure 4Schematic diagram of a loading bracket for a coaxiality detection device for a photoelectric detector.

[0022] Figure 5 It is a schematic diagram of the limiting mechanism of the coaxiality detection device for the photoelectric detector.

[0023] Figure 6 Schematic diagram of the interference mechanism of the coaxiality detection device for the photoelectric detector.

[0024] Figure 7 It is a partial structural schematic diagram of the limiting mechanism of the coaxiality detection equipment used for the photoelectric detector.

[0025] Figure 8 It is a partial structural schematic diagram of the interference mechanism of the coaxiality detection equipment used for the photoelectric detector.

[0026] Fig. 9 The present invention is a schematic diagram of the structure of a retention rack for a coaxiality detection device for a photoelectric detector.

[0027] In the figure: 1. accommodating mechanism; 10. accommodating box; 11. material collecting box; 12. loading bracket; 13. built-in slot; 2. driving mechanism; 20. conveyor belt; 21. slit; 22. fixing frame; 23. motor; 24. driving roller; 3. limiting mechanism; 30. entry slot; 31. installation slot; 32. blocking pad; 33. first spring; 34. sliding block; 35. interference frame; 36. retention frame; 37. clamping pad; 38. placement slot; 4. interference mechanism; 40. interference box; 41. second spring; 42. sliding plate; 43. interference slot; 44. inclined slot; 45. inclined block; 5. detector body; 6. workpiece to be detected. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0029] Example 1, reference Figures 1 to 9 , which is the first embodiment of the present invention, provides a coaxiality detection device for a photoelectric detector, including a detector body 5 and a workpiece to be detected 6, the coaxiality detection device includes a receiving mechanism 1 for fixing the detector body 5, a driving mechanism 2 is fixedly installed inside the receiving mechanism 1, a limiting mechanism 3 is provided on the driving mechanism 2, and an interference mechanism 4 is fixedly installed between the receiving mechanism 1 and the driving mechanism 2; Furthermore, during inspection, the workpiece 6 to be inspected is placed inside the accommodating mechanism 1, and the driving mechanism 2 drives the limiting mechanism 3 to move. When the limiting mechanism 3 passes through the workpiece 6 to be inspected, the workpiece 6 to be inspected is taken away from the accommodating mechanism 1 and the workpiece 6 to be inspected is limited. When the limiting mechanism 3 passes through the detector body 5, the limiting mechanism 3 contacts the resistance mechanism 4, and the resistance mechanism 4 limits the limiting mechanism 3 and the workpiece 6 to be inspected above it. At this time, the detector body 5 can inspect the workpiece 6 to be inspected. The setting of the driving mechanism 2 can effectively drive the movement of the limiting mechanism 3, and the driving mechanism 2 and the limiting mechanism 3 are used to control the workpiece to move along a fixed path. The setting of the detector body 5 can photograph the workpiece and perform coaxiality detection through the image.

[0030] The driving mechanism 2 includes a conveyor belt 20 composed of two belt bodies, a slit 21 is provided between the two belt bodies, and the setting of the slit 21 can make the workpiece 6 to be detected move along a fixed path. The two belt bodies are connected by a plurality of fixing frames 22. The cross section of the fixing frame 22 is "C"-shaped, and its shape can avoid conflicting with the pins of the workpiece 6 to be detected, and can also avoid conflicting with the driving mechanism 2. The setting of the fixing frame 22 can effectively synchronize the belt bodies at both ends of the conveyor belt 20, so that the conveyor belt 20 can run more stably; The limiting mechanism 3 includes an entry slot 30 provided on the conveyor belt 20 and a mounting slot 31 provided on one side of the slit 21. A connecting frame 34 is slidably connected inside the mounting slot 31. A resisting frame 35 and a retaining frame 36 are fixedly connected to the connecting frame 34. A clamping pad 37 is fixedly connected inside the retaining frame 36. A placement slot 38 is provided on the top of the retaining frame 36. Specifically, the entry groove 30 is set in a teardrop shape, which can ensure that the pins of the workpiece 6 to be detected are not damaged when the workpiece 6 to be detected is placed. The setting of the installation groove 31 can limit and fix the components inside it. The setting of the interference frame 35 can cooperate with the interference mechanism 4 to block the retention frame 36 and make it stationary relative to the detector body 5 to facilitate the detection of the workpiece 6 to be detected. The setting of the retention frame 36 can accommodate the workpiece 6 to be detected, and the placement groove 38 is adapted to the workpiece 6 to be detected.

[0031] The limiting mechanism 3 also includes a blocking pad 32 fixedly mounted at the upper and lower ends of the mounting groove 31, and the connecting frame 34 is connected to the mounting groove 31 through a first spring 33; the retaining frame 36 is away from one end of the abutting frame 35, and the length of its support leg is greater than the support leg at the other end, and both ends of the retaining frame 36 are located in the slit 21, and a gap is left between the bottom of the abutting frame 35 and the conveyor belt 20; Among them, the end of the blocking pad 32 close to the first spring 33 is provided with a convex obstruction strip, and the connecting frame 34 contacts the convex obstruction strip during the movement, thereby increasing the friction between the blocking pad 32 and the connecting frame 34. The blocking pad 32 is made of rubber material, and its cross section is rectangular. The rectangular setting can be adapted to the installation groove 31. The cross section of the retention frame 36 is "V"-shaped, and the lengths of the two ends are different. The manufacturing material of the retention frame 36 is spring steel. When the retention frame 36 enters the slit 21 from the entry groove 30, the retention frame 36 is subjected to the slit The two ends of the opening of the retention frame 36 shrink inward and drive the clamping pad 37 to shrink inward. The setting of the clamping pad 37 can effectively wrap the pins of the workpiece 6 to be detected, protect the pins of the workpiece 6 to be detected, and clamp the pins of the workpiece 6 to be detected. There is a gap between the bottom of the contact frame 35 and the conveyor belt 20, and the gap can better protect the contact frame 35, and prevent the particles and dust on the conveyor belt 20 from squeezing the contact frame 35, causing damage and shaking of the contact frame 35.

[0032] In summary, this embodiment solves the problem of movement of the workpiece 6 to be detected, and allows multiple workpieces 6 to be detected to pass through the bottom of the detector body 5 in sequence, avoiding intermittent picking up of the workpiece 6 to be detected, thereby improving detection efficiency.

[0033] Example 2, reference Figures 1 to 9 , which is the second embodiment of the present invention. Different from the previous embodiment, this embodiment provides a coaxiality detection device for a coaxiality detection device of a photoelectric detector, which solves the problem of low detection efficiency of the coaxiality detection device for a photoelectric detector. It includes a resistance mechanism 4 and a receiving mechanism 1. The resistance mechanism 4 includes a resistance box 40 fixed between the receiving mechanism 1 and the resistance frame 35. A slide plate 42 is fixedly connected to the resistance box 40 through a second spring 41. A resistance groove 43 and an inclined groove 44 are respectively provided at one end of the slide plate 42 close to the resistance frame 35. An inclined block 45 is fixedly connected to the transmission belt 20 corresponding to the inclined groove 44. The cross section of the resistance box 40 is rectangular. The resistance box 40 is slidably connected to the slide plate 42. The resistance groove 43 is matched with the resistance frame 35. The inclined surface of the inclined block 45 is matched with the inclined groove 44.

[0034] Specifically, the setting of the resistance box 40 can protect the conveyor belt 20 inside it, and the setting of the second spring 41 can limit the slide plate 42. After the slide plate 42 is squeezed by the inclined block 45, it will drive the slide plate 42 to move. After the slide plate 42 moves, it will squeeze the second spring 41. After being squeezed, the second spring 41 accumulates elastic potential energy. When the force-applying end on the slide plate 42 disappears, the elastic potential energy of the second spring 41 is released to drive the slide plate 42 to reset. The inclined surface of the inclined block 45 is greater than the length of the resistance groove 43. During the movement of the inclined block 45, it can directly cross the resistance groove 43 to avoid the resistance groove 43 from colliding with the inclined block 45.

[0035] The accommodating mechanism 1 includes an accommodating box 10, a material collecting box 11 is slidably connected inside the accommodating box 10, and a loading bracket 12 is fixedly connected to the accommodating box 10 at the top of the conveyor belt 20, and a built-in groove 13 is provided on the loading bracket 12, and the workpiece 6 to be detected is located in the built-in groove 13. The loading bracket 12 is adapted to the limiting mechanism 3, and a gap is left between the bottom of the loading bracket 12 and the top of the retention rack 36, and the bottom pin of the workpiece 6 to be detected is adapted to the clamping pad 37 inside the retention rack 36.

[0036] Furthermore, the material collection box 11 can effectively store the workpiece 6 to be inspected, and the loading bracket 12 can effectively limit the detector body 5. The loading bracket 12 is made of stainless steel, which is rust-proof and corrosion-resistant and provides a longer service life. The top of the built-in groove 13 is arc-shaped to prevent the workpiece 6 to be inspected from colliding with the loading bracket 12 during the placement process. At the same time, the workpiece 6 to be inspected can be limited, and the workpiece 6 to be inspected can be more easily placed in the built-in groove 13.

[0037] The material collection box 11 is located at the bottom of the conveyor belt 20, and a good product accommodating chamber and a waste product accommodating chamber are respectively provided inside the material collection box 11. The driving mechanism 2 also includes a motor 23 fixed on the accommodating box 10, and the driving end of the motor 23 passes through the accommodating box 10 and is fixedly connected to a driving roller 24, which is connected to the conveyor belt 20, and the other end of the conveyor belt 20 is connected to the accommodating box 10 through a driven roller. The driving roller 24 and the driven roller are both located inside the conveyor belt 20, and a gap is left between the driving end of the motor 23 and the accommodating box 10.

[0038] Among them, there is a gap between the bottom of the feeding bracket 12 and the top of the retaining rack 36, and the gap can avoid the conflict between the bottom of the feeding bracket 12 and the retaining rack 36. The gap can effectively enable the movable retaining rack 36 to take away the workpiece 6 to be inspected in the built-in groove 13, so as to effectively inspect the workpiece 6 to be inspected. The setting of the motor 23 can drive the driving roller 24 to operate. The driving roller 24 is two roller bodies, and there is a gap between the two roller bodies. The gap can effectively avoid the fixed frame 22.

[0039] The rest of the structure is the same as that of Example 1.

[0040] During operation, the conveyor belt 20 is started. When the entry slot 30 in the conveyor belt 20 passes through the built-in slot 13 on the loading bracket 12, the workpiece 6 to be inspected is placed in the built-in slot 13. The arc at the top of the built-in slot 13 can effectively limit the workpiece 6 to be inspected, so that the workpiece 6 to be inspected can be placed better. The conveyor belt 20 drives the retention rack 36 to move, and the clamping pad 37 inside it contacts the pins at the bottom of the workpiece 6 to be inspected. Because the pins of the workpiece 6 to be inspected are subjected to the horizontal traction force of the clamping pad 37, the workpiece 6 to be inspected is taken away from the built-in slot 13. When the workpiece 6 to be inspected leaves the built-in slot 13 and falls into the placement slot 38 on the retention rack 36, the transfer of the workpiece 6 to be inspected is completed and the inspection stage is entered. The conveyor belt 20 drives the storage rack 36 and the workpiece 6 to be detected to move to the bottom of the detector body 5, and the contact groove 43 contacts the contact rack 35 to prevent the contact rack 35 from crossing the contact groove 43 during the movement. The first spring 33 is squeezed to accumulate elastic potential energy. At this time, the contact rack 35 is in a static state relative to the detector body 5, and the coaxiality detection can be performed, so that the detector body 5 can detect the workpiece 6 to be detected. When the inclined block 45 contacts the inclined groove 44, the inclined block 45 can effectively contact the inclined groove 44 on the slide plate 42, so that the slide plate 42 moves in the direction of the second spring 41. After the slide plate 42 moves, it squeezes the second spring 41, so that the second spring 41 accumulates elastic potential energy, and at the same time separates the contact groove 43 from the contact rack 35. After the inclined groove 44 is squeezed, the static state of the detector body 5 is broken, and the elastic potential energy of the first spring 33 is released to drive the workpiece 6 to be detected away from the detector body 5. At this time, a detection operation can be completed; When the retention rack 36 is limited, the retention rack 36 enters the slit 21 from the entry slot 30. At this time, the retention rack 36 contracts and drives the clamping pad 37 to contract. At this time, the bottom pin of the workpiece 6 to be inspected can be clamped and fixed to prevent it from detaching. When the first spring 33 is reset after the inspection is completed, the clamping pad 37 and the retention rack 36 can be slowly reset under the limit of the blocking pad 32 to avoid damage to the workpiece 6 to be inspected due to rapid reset. After the detection is completed, if the product is good, the good product containing chamber in the material collection box 11 is moved to the bottom of the conveyor belt 20, otherwise the waste product containing chamber is moved to the bottom of the conveyor belt 20. When the conveyor belt 20 moves the detector body 5 to the top of the material collection box 11, the detector body 5 falls into the material collection box 11 under the action of its own weight.

[0041] In summary, the setting of the good product accommodating chamber and the waste product accommodating chamber can be used to classify the workpieces according to their quality, the setting of the material collecting box 11 can effectively store the workpieces, and the setting of the loading bracket 12 can effectively limit the workpiece 6 to be inspected.

[0042] Example 3, reference Figures 1 to 9, which is the third embodiment of the present invention, is different from the previous embodiment in that this embodiment provides a detection method to solve the problem of coaxiality detection of the photoelectric detector, which includes a coaxiality detection device applied to the photoelectric detector, and the method includes; S1, start the conveyor belt 20, when the entry slot 30 in the conveyor belt 20 passes through the built-in slot 13 on the loading bracket 12, the workpiece 6 to be inspected is placed in the built-in slot 13, the setting of the entry slot 30 can effectively provide a placement space for the workpiece 6 to be inspected, avoid the workpiece 6 to be inspected from contacting the slit 21 during the placement process, and make it more convenient to place the workpiece 6 to be inspected; S2, the conveyor belt 20 drives the storage rack 36 to move, and takes the workpiece 6 to be inspected away from the built-in groove 13 and drops it into the placement groove 38 on the storage rack 36; S3, the conveyor belt 20 drives the storage rack 36 and the workpiece 6 to be inspected to move to the bottom of the detector body 5, so that the workpiece 6 to be inspected can be better inspected; S4, the limiting mechanism 3 temporarily limits the workpiece 6 to be detected, so that the detector body 5 can detect the workpiece 6 to be detected. The temporary limit can provide better detection conditions, and at the same time enable the device to continuously detect the workpiece, eliminating the material removal process; S5. After the detection is completed, if the product is good, the good product containing chamber in the material collection box 11 is moved to the bottom of the conveyor belt 20. Otherwise, the waste product containing chamber is moved to the bottom of the conveyor belt 20. When the conveyor belt 20 moves the detector body 5 to the top of the material collection box 11, the detector body 5 falls into the material collection box 11 under the action of its own weight.

[0043] The rest of the structure is the same as that of Example 2.

[0044] In summary, when the retention rack 36 is limited, the retention rack 36 enters the slit 21 from the entry groove 30. At this time, the retention rack 36 contracts and drives the clamping pad 37 to contract. At this time, the bottom pin of the workpiece 6 to be inspected can be clamped and fixed to prevent it from detaching. After the inspection is completed, when the first spring 33 is reset, the clamping pad 37 and the retention rack 36 can be slowly reset under the limitation of the blocking pad 32 to avoid damage to the workpiece 6 to be inspected due to rapid reset.

[0045] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A coaxiality detection device for a photoelectric detector, comprising a detector body (5) and a workpiece to be detected (6), characterized in that: The coaxiality detection device comprises a receiving mechanism (1) for fixing a detector body (5); a driving mechanism (2) is fixedly installed inside the receiving mechanism (1); a limiting mechanism (3) is provided on the driving mechanism (2); and an interference mechanism (4) is fixedly installed between the receiving mechanism (1) and the driving mechanism (2); The driving mechanism (2) comprises a transmission belt (20) composed of two belt bodies, a slit (21) is provided between the two belt bodies, and the two belt bodies are connected via a plurality of fixing frames (22); The limiting mechanism (3) comprises an entry slot (30) provided on the conveyor belt (20) and a mounting slot (31) provided on one side of the slit (21); a connecting frame (34) is slidably connected inside the mounting slot (31); a resisting frame (35) and a retaining frame (36) are respectively fixedly connected to the connecting frame (34); a clamping pad (37) is fixedly connected inside the retaining frame (36); and a placement slot (38) is provided on the top of the retaining frame (36).

2. The coaxiality detection device for a photoelectric detector according to claim 1, characterized in that: The limiting mechanism (3) further comprises a blocking pad (32) fixedly mounted at the upper and lower ends of the mounting groove (31); the connecting frame (34) and the mounting groove (31) are connected via a first spring (33); The retention rack (36) is located at one end away from the abutment rack (35), and its support leg is longer than the support leg at the other end. Both ends of the retention rack (36) are located in the slit (21), and a gap is left between the bottom of the abutment rack (35) and the conveyor belt (20).

3. The coaxiality detection device for a photoelectric detector according to claim 2, characterized in that: The abutment mechanism (4) comprises an abutment box (40) fixed between the accommodating mechanism (1) and the abutment frame (35); a slide plate (42) is fixedly connected to the inside of the abutment box (40) via a second spring (41); an abutment groove (43) and an inclined groove (44) are respectively formed at one end of the slide plate (42) close to the abutment frame (35); and an inclined block (45) is fixedly connected to the conveyor belt (20) corresponding to the inclined groove (44).

4. The coaxiality detection device for a photoelectric detector according to claim 3, characterized in that: The cross section of the abutment box (40) is rectangular, the abutment box (40) is slidably connected to the slide plate (42), the abutment groove (43) is matched with the abutment frame (35), and the inclined surface of the inclined block (45) is matched with the inclined groove (44).

5. The coaxiality detection device for a photoelectric detector according to claim 3, characterized in that: The accommodating mechanism (1) comprises a accommodating box (10), a material collecting box (11) being slidably connected inside the accommodating box (10), the accommodating box (10) being located on the top of the conveyor belt (20) and being fixedly connected to a loading bracket (12), the loading bracket (12) being provided with a built-in groove (13), and the workpiece (6) to be detected being located in the built-in groove (13).

6. The coaxiality detection device for a photoelectric detector according to claim 5, characterized in that: The feeding bracket (12) is matched with the limiting mechanism (3), a gap is left between the bottom of the feeding bracket (12) and the top of the retention rack (36), and the bottom pin of the workpiece (6) to be inspected is matched with the clamping pad (37) inside the retention rack (36).

7. The coaxiality detection device for a photoelectric detector according to claim 5, characterized in that: The material collection box (11) is located at the bottom of the conveyor belt (20), and a good product accommodating chamber and a waste product accommodating chamber are respectively provided inside the material collection box (11).

8. The coaxiality detection device for a photoelectric detector according to claim 7, characterized in that: The driving mechanism (2) further comprises a motor (23) fixed on the containing box (10); a driving end of the motor (23) passes through the containing box (10) and is fixedly connected to a driving roller (24); the driving roller (24) is connected to a conveyor belt (20); and the other end of the conveyor belt (20) is connected to the containing box (10) via a driven roller.

9. The coaxiality detection device for a photoelectric detector according to claim 8, characterized in that: The driving roller (24) and the driven roller are both located inside the conveyor belt (20), and a gap is left between the driving end of the motor (23) and the accommodating box (10).

10. A detection method, characterized in that: The coaxiality detection device for a photoelectric detector as claimed in any one of claims 1 to 9, the method comprising: S1, starting the conveyor belt (20), and when the entry slot (30) in the conveyor belt (20) passes through the built-in slot (13) on the loading bracket (12), placing the workpiece (6) to be inspected in the built-in slot (13); S2, the conveyor belt (20) drives the storage rack (36) to move, and brings the workpiece (6) to be inspected away from the built-in groove (13) and drops it into the placement groove (38) on the storage rack (36); S3, the conveyor belt (20) drives the storage rack (36) and the workpiece to be inspected (6) to move to the bottom of the detector body (5); S4, the limiting mechanism (3) temporarily limits the workpiece (6) to be detected, so that the detector body (5) can detect the workpiece (6) to be detected; S5. After the detection is completed, if the product is good, the good product containing chamber in the material collection box (11) is moved to the bottom of the conveyor belt (20); otherwise, the waste product containing chamber is moved to the bottom of the conveyor belt (20). When the conveyor belt (20) moves the detector body (5) to the top of the material collection box (11), the detector body (5) falls into the material collection box (11) under the action of its own weight.

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