Optical detection device for label printing quality

Abstract

The invention relates to the technical field of visual inspection, and discloses a label printing quality optical detection device which comprises a main line body, a mounting frame is arranged on the main line body, a plurality of autorotation rollers rotating through chains are rotationally mounted on the mounting frame, and an inductor used for detecting a packaging box is fixedly mounted on the surface of the mounting frame; the inductor is connected with the input end of the controller, and a height-adjustable detection plate is slidably mounted on the mounting frame; the controller drives the electromagnetic mechanism to move, the movement of the electromagnetic mechanism drives the wiping block to be separated from the sealing of the dustproof frame, then the wiping block is driven to revolve under the action of the rotating mechanism, the surface of the detection lens is wiped through the revolution of the wiping block at the moment, and meanwhile secondary detection is conducted after the detection lens is shielded. Therefore, the false alarm of the detection lens caused by dust on the surface of the detection lens is avoided, the detection accuracy is ensured through secondary detection, and the purpose of improving the detection accuracy is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of visual inspection, in particular to a label printing quality optical detection device. BACKGROUND

[0002] At present, with the development of science and technology, label printing technology is widely used in packaging box packaging field. By printing labels on packaging boxes, users can easily view product information according to packaging. Compared with the traditional method of pasting labels on packaging boxes, the printed labels are more stable, and the labor input is also reduced, greatly improving the efficiency of packaging box packaging.

[0003] At present, after printing labels on packaging boxes, the printed labels need to be detected to ensure that the printed labels have no printing defects. However, in the process of label detection by the existing equipment, the packaging equipment is generally at the end of the line, so the packaging conveyor will generate dust during transportation. The dust will cause the detection camera to appear detection abnormity, resulting in false alarm. The packaging boxes with false alarm need to be manually placed on the conveying line again, which seriously affects the packaging efficiency. Based on this, the present application designs a label printing quality optical detection device to solve the above problems. SUMMARY

[0004] The purpose of the embodiment of the present application is to provide a label printing quality optical detection device, which aims to solve the technical problems existing in the prior art mentioned in the background.

[0005] The embodiment of the present application is realized as follows: a label printing quality optical detection device, the device comprises: A main line body is provided with a mounting frame, a plurality of self-rotating rollers rotating through chains are rotatably installed on the mounting frame, a sensor for detecting packaging boxes is fixedly installed on the surface of the mounting frame, the sensor is connected with the input end of a controller, and an adjustable height detection plate is slidingly installed on the mounting frame; A detection mechanism comprises two detection lenses for detecting labels installed on the detection plate, each detection lens is fixedly installed on an L-shaped plate, the detection lens is connected with another input end of the controller, a gravity block for maintaining the motion posture of the detection lens is fixedly installed on the surface of the L-shaped plate, a wiping block for wiping the surface of the detection lens is installed on the detection plate, the wiping block is fixedly installed on a rotating rod, and a dustproof frame for cooperating with the wiping block is installed on the detection plate; A power supply mechanism is used to supply power to the detection lens; A circulating mechanism is used to drive the detection lens to move synchronously with the packaging box; An electromagnetic mechanism is used to drive the wiping block to revolve by cooperating with a rotating mechanism; A moving mechanism is used to adjust the detection height of the detection lens; The blanking mechanism is used for blanking the abnormal packaging box.

[0006] Further, the power supply mechanism comprises a rotating contact head connected with the detection lens, the rotating contact head penetrates through the L-shaped plate and is fixedly connected with the L-shaped plate, the rotating contact head penetrates through the circulating mechanism and is fixedly connected with the circulating mechanism, the input end of the rotating contact head is in contact with the inner wall of the power supply ring, the power supply ring is fixedly connected with the circulating mechanism, the surface of the power supply ring is fixedly installed with a power supply plate, the surface of the power supply plate is fixedly installed with a conductive rod, the surface of the detection plate is fixedly installed with a power supply ring and an insulating ring which cooperate with the conductive rod, and the power supply ring and the insulating ring form a complete U-shaped ring.

[0007] Further, the circulating mechanism comprises a rotating rod fixedly connected with the surface of the L-shaped plate, the rotating contact head penetrates through the rotating rod and is fixedly connected with the rotating rod, the surface of the rotating rod is rotatably installed with a fixed block, the surface of the fixed block is fixedly installed with a power supply ring, the fixed block is fixedly installed on a rotating belt, the rotating belt is sleeved on the driving pulley and the driven pulley and forms a belt wheel transmission with the driving pulley and the driven pulley, the driven pulley is rotatably connected with the detection plate, the surface of the driving pulley is connected with the output end of the circulating motor, the output end of the circulating motor penetrates through the detection plate and is rotatably connected with the detection plate, the surface of the detection plate is provided with a U-shaped sliding groove matched with the rotating rod, and the circulating motor is connected with the output end of the controller.

[0008] Further, the electromagnetic mechanism comprises a power supply coil fixedly installed on the surface of the power supply plate, a relay is installed on the power supply coil, the relay is connected with another output end of the controller, further comprises a permanent magnet installed on the detection plate and different from the magnetism of the power supply coil, the power supply coil and the permanent magnet are connected through a compression spring, the surface of the permanent magnet is rotatably installed with a moving rod, the moving rod is slidably connected with the power supply coil and the inner wall of the guide plate, the guide plate is fixedly installed on the surface of the power supply ring, the surface of the guide plate is fixedly installed with a connecting frame, the moving rod is slidably connected with the inner wall of the connecting frame, the surface of the moving rod is fixedly installed with a rotating rod, the surface of the connecting frame is fixedly installed with a dustproof frame, and the surface of the moving rod is fixedly installed with a rotating mechanism.

[0009] Further, the rotating mechanism comprises a limiting block fixedly installed on the surface of the guide plate, a limiting column head is fixedly installed on the surface of the limiting block, a sliding groove rod is fixedly installed on the surface of the moving rod, a straight slot and a circumferential slot matched with the limiting column head are formed on the surface of the sliding groove rod, one end of the straight slot is smoothly connected with the circumferential slot, a rotating gear is fixedly installed on the surface of the sliding groove rod, and a fixed rack plate matched with the rotating gear is fixedly installed on the surface of the detection plate.

[0010] Further, the moving mechanism comprises two driving motors fixedly installed on the surface of the mounting frame, an output end of each driving motor is fixedly installed with a rotating screw rod, the rotating screw rod and the screw rod slider form a screw pair transmission, the screw rod slider is fixedly connected with the detection plate, and the screw rod slider is slidingly connected with the mounting frame.

[0011] Further, the blanking mechanism comprises a jacking cylinder and a thrust cylinder fixedly installed on the mounting frame, the output end of the jacking cylinder is fixedly installed with a jacking frame, the output end of the thrust cylinder is fixedly installed with a thrust plate, and the jacking cylinder and the thrust cylinder are connected with another output end of the controller.

[0012] Compared with the prior art, the present application has the following beneficial effects: 1. The detection lens is driven to move with the label of the packaging box through the circulating mechanism, if the label has no defects, it is normally released, another detection lens is driven to detect the label of the packaging box behind through the circulation of the circulating mechanism, so that the purpose of automatic circulation detection is achieved. 2. The controller drives the electromagnetic mechanism to move, the movement of the electromagnetic mechanism drives the wiping block to separate from the sealing of the dustproof frame, and then drives the wiping block to revolve through the action of the rotating mechanism. At this time, the revolution of the wiping block wipes the surface of the detection lens, and the detection lens is shielded for secondary detection, so as to avoid false alarm of the detection lens caused by dust on the surface of the detection lens, and the secondary detection ensures the accuracy of detection, so as to achieve the purpose of improving the detection accuracy. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 A structural schematic view of a label printing quality optical detection device provided by an embodiment of the present application is shown in the figure; Figure 2 A structural schematic view of a label printing quality optical detection device provided by an embodiment of the present application is shown in the figure; Figure 1 An enlarged structural schematic view of A of the present application is shown in the figure; Figure 3 An enlarged structural schematic view of B of the present application is shown in the figure; Figure 1 Another sectional structural schematic view of a label printing quality optical detection device of the present application is shown in the figure; Figure 4 An enlarged structural schematic view of C of the present application is shown in the figure; Figure 5 Figure 4 An exploded structural schematic view of part of a label printing quality optical detection device of the present application is shown in the figure; Figure 6 An enlarged structural schematic view of D of the present application is shown in the figure; Figure 7 An enlarged structural schematic view of D of the present application is shown in the figure; Figure 6 An enlarged structural schematic view of D of the present application is shown in the figure; Figure 8 Figure 6 ​​The enlarged structure schematic diagram of E in the figure. In the figure: 1, main line body; 101, mounting frame; 102, self-rotating roller; 103, inductor; 104, detection plate; 2, detection mechanism; 201, detection lens; 202, L-shaped plate; 203, gravity block; 204, wiping block; 205, rotating rod; 206, dustproof frame; 3, power supply mechanism; 301, rotating contact; 302, power supply ring; 303, power transmission plate; 304, conductive rod; 305, power supply ring; 306, insulating ring; 4, circulating mechanism; 401, rotating rod; 402, fixed block; 403, rotating belt; 404, driving pulley; 405, driven pulley; 406, circulating motor; 5, electromagnetic mechanism; 501, power supply coil; 502, permanent magnet; 503, compression spring; 504, moving rod; 505, guide plate; 506, connecting frame; 6, rotating mechanism; 601, limit block; 602, limit column head; 603, sliding slot rod; 604, straight slot; 605, circumferential slot; 606, rotating gear; 607, fixed rack plate; 7, moving mechanism; 701, drive motor; 702, rotating screw; 703, screw block; 8, blanking mechanism; 801, jacking cylinder; 802, jacking frame; 803, thrust cylinder; 804, thrust plate. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application, and are not used to limit the present application.

[0015] It can be understood that the terms "first", "second" and the like used in the present application can be used herein to describe various elements, but unless specifically stated, these elements are not limited by these terms. These terms are only used to distinguish the first element from another element.

[0016] As shown in Figure 2 , Figure 4 , Figure 5 and Figure 6 , in one embodiment, a label printing quality optical detection device is proposed, which comprises: The main line body 1 is provided with a mounting frame 101, a plurality of self-rotating rollers 102 are rotatably installed on the mounting frame 101 through a chain, a surface of the mounting frame 101 is fixedly installed with an inductor 103 for detecting a packaging box, the inductor 103 is connected with an input end of a controller, and an adjustable height detection plate 104 is slidably installed on the mounting frame 101; Detection mechanism 2: two detection lenses 201 are installed on the detection plate 104 for detecting labels, each detection lens 201 is fixedly installed on the L-shaped plate 202, the detection lens 201 is connected with another input end of the controller, the surface of the L-shaped plate 202 is fixedly installed with a gravity block 203 for maintaining the movement posture of the detection lens 201, further comprising a wiping block 204 installed on the detection plate 104 for wiping the surface of the detection lens 201, the wiping block 204 is fixedly installed on the rotating rod 205, further comprising a dustproof frame 206 installed on the detection plate 104 for cooperating with the wiping block 204; Power-on mechanism 3: for providing power for the detection lens 201; Circulation mechanism 4: for driving the detection lens 201 to move synchronously with the packaging box; Electromagnetic mechanism 5: driven by the rotating mechanism 6 to revolve with the wiping block 204; Moving mechanism 7: for adjusting the detection height of the detection lens 201; Blanking mechanism 8: for blanking the abnormal packaging box.

[0017] When the label on the packaging box is detected, the height of the detection lens 201 is adjusted by the moving mechanism 7, so that the detection lens 201 can correctly take pictures of the label on the packaging box, when the packaging box passes through the front-end printing machine to complete the printing of the label, the position of the printing machine has been positioned, so it is not necessary to position again on the self-rotating cylinder 102, at this time, as shown in Figure 2 When the packaging box triggers the sensor 103, the feedback is given to the controller, the controller starts to read seconds, when the set number of seconds is reached, the label position of the packaging box is just moved to the image taking position of the detection lens 201, the controller feeds back a signal to the circulation mechanism 4, as shown in Figure 5 And Figure 6As shown, the detection lens 201 is driven by the circulating mechanism 4 to move with the label of the packaging box, if the label is defect-free, it is released normally, and another detection lens 201 is driven by the circulating mechanism 4 to detect the label of the packaging box behind, so as to achieve the purpose of automatic circulation detection, it should be noted that the setting of the wiping block 204 ensures that the detection lens 201 does not rotate with the circulating mechanism 4, so as to avoid the influence of the centrifugal force on the electronic components in the detection lens 201, when the detection lens 201 detects the abnormal packaging box, the electromagnetic mechanism 5 is driven by the controller to move, the movement of the electromagnetic mechanism 5 drives the wiping block 204 to separate from the sealing of the dustproof frame 206, and the wiping block 204 is driven by the rotating mechanism 6 to revolve, at this time, the revolution of the wiping block 204 wipes the surface of the detection lens 201, and the detection lens 201 is shielded for secondary detection, so as to avoid the false alarm of the detection lens 201 caused by the dust on the surface of the detection lens 201, the secondary detection ensures the accuracy of the detection, so as to achieve the purpose of improving the detection accuracy, if the secondary detection shows that the label still has defects, as shown in Figure 4 At this time, the unloading mechanism 8 operates to push the packaging box with printing defects from the rotating drum 102 to the unloading line, so as to avoid affecting the detection of the subsequent packaging box.

[0018] As shown in Figure 5 and Figure 6 As a preferred embodiment of the application, the power supply mechanism 3 includes a rotating contact 301 connected to the detection lens 201, the rotating contact 301 penetrates the L-shaped plate 202 and is fixedly connected with the L-shaped plate 202, and the rotating contact 301 penetrates the circulating mechanism 4 and is fixedly connected with the circulating mechanism 4, the input end of the rotating contact 301 is in contact with the inner wall of the power supply ring 302, the power supply ring 302 is fixedly connected with the circulating mechanism 4, the surface of the power supply ring 302 is fixedly installed with a power supply plate 303, the surface of the power supply plate 303 is fixedly installed with a conductive rod 304, the surface of the detection plate 104 is fixedly installed with a power supply ring 305 and an insulating ring 306 matched with the conductive rod 304, and the power supply ring 305 and the insulating ring 306 form a complete U-shaped ring.

[0019] In actual application, when the packaging box is detected, as shown in Figure 5 At this time, the power supply ring 305 is powered, and the power of the power supply ring 305 is transmitted to the detection lens 201 through the conductive rod 304, the power supply plate 303, the power supply ring 302 and the rotating contact 301, at this time, the detection lens 201 moves synchronously with the packaging box, and the label on the packaging box is detected, after the detection of the label of the packaging box is completed, another detection lens 201 is driven by the circulating mechanism 4 to detect the packaging box, as shown in Figure 6As shown in the figure, the conductive rod 304 on the detection lens 201 that has completed detection moves to the insulating ring strip 306, at this time the detection lens 201 does not work any more, so as to achieve the purpose of automatically energizing the working detection lens 201, and at the same time, the non-working detection lens 201 is powered off to cool down, thereby improving the working life of the detection lens 201.

[0020] As shown in the figure, Figure 4 , Figure 5 and Figure 6 As another preferred embodiment of the present application, the circulating mechanism 4 comprises a rotating rod 401 fixedly connected with the surface of the L-shaped plate 202, the rotating contact 301 penetrates through the rotating rod 401 and is fixedly connected with the rotating rod 401, the surface of the rotating rod 401 is rotatably installed with a fixed block 402, the surface of the fixed block 402 is fixedly installed with the energizing ring 302, the fixed block 402 is fixedly installed on a rotating belt 403, the rotating belt 403 is sleeved on the driving pulley 404 and the driven pulley 405 to form a belt wheel transmission, the driven pulley 405 is rotatably connected with the detection plate 104, the surface of the driving pulley 404 is connected with the output end of the circulating motor 406, and the output end of the circulating motor 406 penetrates through the detection plate 104 and is rotatably connected with the detection plate 104, the surface of the detection plate 104 is provided with a U-shaped sliding groove matched with the rotating rod 401, and the circulating motor 406 is connected with the output end of the controller.

[0021] When the controller completes the preset time setting in actual application, as shown in the figure, Figure 4 At this time, the controller drives the circulating motor 406 to run, as shown in the figure, Figure 6 The running of the circulating motor 406 drives the driving pulley 404 to rotate, the rotation of the driving pulley 404 drives the rotating belt 403 to rotate through the belt wheel, as shown in the figure, Figure 5 The rotation of the rotating belt 403 drives the rotating rod 401 to move synchronously through the fixed block 402, thereby driving the detection lens 201 to move synchronously with the packaging box, so as to achieve the purpose of following detection of the packaging box label.

[0022] As shown in the figure, Figure 5 and Figure 8As shown, as another preferred embodiment of the present application, the electromagnetic mechanism 5 comprises a power coil 501 fixedly installed on the surface of the transmission plate 303, a relay is installed on the power coil 501, the relay is connected with another output end of the controller, and the electromagnetic mechanism 5 further comprises a permanent magnet 502 installed on the detection plate 104 and different from the magnetism generated by the power coil 501, the power coil 501 and the permanent magnet 502 are connected through a compression spring 503, the surface of the permanent magnet 502 is rotatably installed with a moving rod 504, the moving rod 504 is slidably connected with the power coil 501 and the inner wall of a guide plate 505, the guide plate 505 is fixedly installed on the surface of the power ring 302, the surface of the guide plate 505 is fixedly installed with a connecting frame 506, the moving rod 504 is slidably connected with the inner wall of the connecting frame 506, the surface of the moving rod 504 is fixedly installed with a rotating rod 205, the surface of the connecting frame 506 is fixedly installed with a dustproof frame 206, and the surface of the moving rod 504 is fixedly installed with the rotating mechanism 6.

[0023] When the detection lens 201 detects the label defect for the first time in actual application of the embodiment of the present application, the controller sends a signal to the relay on the power coil 501, the relay switch is opened to make the power coil 501 electrified to generate magnetism, as shown in Figure 5 and Figure 8 The permanent magnet 502 moves to the position of the power coil 501 under the action of the magnetic force, and further drives the rotating mechanism 6 to move to the position of the power coil 501, and simultaneously drives the moving rod 504 to move to the position away from the detection plate 104, the movement of the moving rod 504 drives the wiping block 204 to disengage from the dustproof frame 206 through the rotating rod 205, then the rotating mechanism 6 is rotated under the action of the circulating mechanism 4, the rotation of the rotating mechanism 6 drives the wiping block 204 to revolve through the moving rod 504 and the rotating rod 205, the revolution of the wiping block 204 removes the dust on the surface of the detection lens 201, and after one revolution of the wiping block 204, the wiping block 204 is reset to engage with the dustproof frame 206 through the action of the rotating mechanism 6 and the compression spring 503, so as to avoid that the wiping block 204 contacts with the outside environment to accumulate dust and affect the cleaning effect on the detection lens 201 in the later period.

[0024] As shown in Figure 5 and Figure 7As shown in the drawings, as another preferred embodiment of the present application, the rotating mechanism 6 comprises a limiting block 601 fixedly installed on the surface of the guide plate 505, the surface of the limiting block 601 is fixedly installed with a limiting column head 602, the surface of the moving rod 504 is fixedly installed with a sliding groove rod 603, the surface of the sliding groove rod 603 is provided with a straight slot 604 and a circumferential slot 605 matched with the limiting column head 602, and one end of the straight slot 604 is smoothly connected with the circumferential slot 605, the surface of the sliding groove rod 603 is fixedly installed with a rotating gear 606, and the surface of the detection plate 104 is fixedly installed with a fixed rack plate 607 matched with the rotating gear 606.

[0025] As shown in the drawings, as another preferred embodiment of the present application, the rotating mechanism 6 comprises a limiting block 601 fixedly installed on the surface of the guide plate 505, the surface of the limiting block 601 is fixedly installed with a limiting column head 602, the surface of the moving rod 504 is fixedly installed with a sliding groove rod 603, the surface of the sliding groove rod 603 is provided with a straight slot 604 and a circumferential slot 605 matched with the limiting column head 602, and one end of the straight slot 604 is smoothly connected with the circumferential slot 605, the surface of the sliding groove rod 603 is fixedly installed with a rotating gear 606, and the surface of the detection plate 104 is fixedly installed with a fixed rack plate 607 matched with the rotating gear 606. Figure 5 Figure 7 As shown in the drawings, as another preferred embodiment of the present application, the rotating mechanism 6 comprises a limiting block 601 fixedly installed on the surface of the guide plate 505, the surface of the limiting block 601 is fixedly installed with a limiting column head 602, the surface of the moving rod 504 is fixedly installed with a sliding groove rod 603, the surface of the sliding groove rod 603 is provided with a straight slot 604 and a circumferential slot 605 matched with the limiting column head 602, and one end of the straight slot 604 is smoothly connected with the circumferential slot 605, the surface of the sliding groove rod 603 is fixedly installed with a rotating gear 606, and the surface of the detection plate 104 is fixedly installed with a fixed rack plate 607 matched with the rotating gear 606.

[0026] As shown in the drawings, as another preferred embodiment of the present application, the rotating mechanism 6 comprises a limiting block 601 fixedly installed on the surface of the guide plate 505, the surface of the limiting block 601 is fixedly installed with a limiting column head 602, the surface of the moving rod 504 is fixedly installed with a sliding groove rod 603, the surface of the sliding groove rod 603 is provided with a straight slot 604 and a circumferential slot 605 matched with the limiting column head 602, and one end of the straight slot 604 is smoothly connected with the circumferential slot 605, the surface of the sliding groove rod 603 is fixedly installed with a rotating gear 606, and the surface of the detection plate 104 is fixedly installed with a fixed rack plate 607 matched with the rotating gear 606. Figure 1 Figure 3 As shown in the drawings, as another preferred embodiment of the present application, the rotating mechanism 6 comprises a limiting block 601 fixedly installed on the surface of the guide plate 505, the surface of the limiting block 601 is fixedly installed with a limiting column head 602, the surface of the moving rod 504 is fixedly installed with a sliding groove rod 603, the surface of the sliding groove rod 603 is provided with a straight slot 604 and a circumferential slot 605 matched with the limiting column head 602, and one end of the straight slot 604 is smoothly connected with the circumferential slot 605, the surface of the sliding groove rod 603 is fixedly installed with a rotating gear 606, and the surface of the detection plate 104 is fixedly installed with a fixed rack plate 607 matched with the rotating gear 606.

[0027] ​​The embodiment of the present application is applied in practice, as shown in Figure 1 and Figure 3 When the label detection is performed on the packaging box, the driving motor 701 is started according to the position of the label on the packaging box, the driving motor 701 drives the rotating screw rod 702 to rotate, and then the screw rod sliding block 703 is driven to move through the screw pair transmission, the movement of the screw rod sliding block 703 drives the detection plate 104 to move, and the purpose of automatically adjusting the position of the detection lens 201 is achieved.

[0028] As shown in Figure 2 As another preferred embodiment of the present application, the discharging mechanism 8 comprises a jacking cylinder 801 and a thrust cylinder 803 fixedly installed on the mounting frame 101, the output ends of the jacking cylinder 801 and the thrust cylinder 803 are fixedly installed with a jacking frame 802 and a thrust plate 804 respectively, and the jacking cylinder 801 and the thrust cylinder 803 are connected with another output end of the controller.

[0029] The embodiment of the present application is applied in practice, when the detection of the packaging box is completed, as shown in Figure 2 If the packaging box has a printing defect, the controller transmits a signal to the jacking cylinder 801, the jacking cylinder 801 drives the jacking frame 802 to lift the abnormal packaging box, and at the same time, the thrust cylinder 803 drives the thrust plate 804 to push the lifted packaging box to the discharging line, so as to complete the automatic discharging of the packaging box.

[0030] The technical features of the above-mentioned embodiments can be combined arbitrarily, in order to make the description simple, not all possible combinations of the technical features in the above-mentioned embodiments are described, however, as long as the combination of the technical features does not exist contradictory, it should be considered that it is within the scope of the present application.

[0031] The above-mentioned embodiments only express several embodiments of the present application, the description is more specific and detailed, but it cannot be understood as the limitation of the patent scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

[0032] The above-mentioned is only the preferred embodiment of the present application, and does not limit the present application, any modification, equivalent replacement and improvement within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A label print quality optical detection apparatus, characterized by, The device comprises: A main line body (1) provided with a mounting rack (101), a plurality of self-rotating rollers (102) rotating through chains are mounted on the mounting rack (101), a sensor (103) for detecting a packaging box is fixedly mounted on the surface of the mounting rack (101), the sensor (103) is connected with an input end of a controller, an adjustable height detection plate (104) is slidingly mounted on the mounting rack (101); A detection mechanism (2) comprising two detection lenses (201) for detecting labels mounted on the detection plate (104), each detection lens (201) is fixedly mounted on an L-shaped plate (202), the detection lens (201) is connected with another input end of the controller, a gravity block (203) for maintaining the movement posture of the detection lens (201) is fixedly mounted on the surface of the L-shaped plate (202), a wiping block (204) for wiping the surface of the detection lens (201) is mounted on the detection plate (104), the wiping block (204) is fixedly mounted on a rotating rod (205), a dustproof frame (206) for cooperating with the wiping block (204) is mounted on the detection plate (104); A power supply mechanism (3) for supplying power to the detection lens (201); A circulating mechanism (4) for driving the detection lens (201) to move synchronously with the packaging box; An electromagnetic mechanism (5) for driving the wiping block (204) to revolve by cooperating with a rotating mechanism (6); A moving mechanism (7) for adjusting the detection height of the detection lens (201); A discharging mechanism (8) for discharging abnormal packaging boxes.

2. A label print quality optical detection apparatus according to claim 1, characterised in that, The power supply mechanism (3) comprises a rotating contact (301) connected with the detection lens (201), the rotating contact (301) penetrates through the L-shaped plate (202) and is fixedly connected with the L-shaped plate (202), the rotating contact (301) penetrates through the circulating mechanism (4) and is fixedly connected with the circulating mechanism (4), an input end of the rotating contact (301) is in contact with the inner wall of a power supply ring (302), the power supply ring (302) is fixedly connected with the circulating mechanism (4), the surface of the power supply ring (302) is fixedly provided with a power supply plate (303), the surface of the power supply plate (303) is fixedly provided with a conductive rod (304), the surface of the detection plate (104) is fixedly provided with a power supply ring (305) and an insulating ring (306) matched with the conductive rod (304), the power supply ring (305) and the insulating ring (306) form a complete U-shaped ring.

3. A label print quality optical detection apparatus according to claim 2, characterised in that, The circulating mechanism (4) comprises a rotating rod (401) fixedly connected with the surface of an L-shaped plate (202), a rotating contact (301) penetrating through the rotating rod (401) and fixedly connected with the rotating rod (401), a fixed block (402) rotatably mounted on the surface of the rotating rod (401), a current-carrying ring (302) fixedly mounted on the surface of the fixed block (402), the fixed block (402) being fixedly mounted on a rotating belt (403), the rotating belt (403) being sleeved on a driving pulley (404) and a driven pulley (405) to form a belt wheel transmission with the driving pulley (404) and the driven pulley (405), the driven pulley (405) being rotatably connected with a detection plate (104), the surface of the driving pulley (404) being connected with the output end of a circulating motor (406), the output end of the circulating motor (406) penetrating through the detection plate (104) and being rotatably connected with the detection plate (104), the surface of the detection plate (104) being provided with a U-shaped sliding groove matched with the rotating rod (401), and the circulating motor (406) being connected with the output end of a controller.

4. A label print quality optical detection apparatus according to claim 2, characterised in that, The electromagnetic mechanism (5) comprises a current-carrying coil (501) fixedly mounted on the surface of a power transmission plate (303), a relay mounted on the current-carrying coil (501) and connected with another output end of a controller, a permanent magnet (502) mounted on the detection plate (104) and different from the magnetism generated by the current-carrying coil (501), the current-carrying coil (501) being connected with the permanent magnet (502) through a compression spring (503), the surface of the permanent magnet (502) being rotatably provided with a moving rod (504), the moving rod (504) being slidably connected with the current-carrying coil (501) and the inner wall of a guide plate (505), the guide plate (505) being fixedly mounted on the surface of the current-carrying ring (302), the surface of the guide plate (505) being fixedly provided with a connecting frame (506), the moving rod (504) being slidably connected with the inner wall of the connecting frame (506), the surface of the moving rod (504) being fixedly provided with a rotating rod (205), the surface of the connecting frame (506) being fixedly provided with a dustproof frame (206), and the surface of the moving rod (504) being fixedly provided with a rotating mechanism (6).

5. A label print quality optical detection apparatus according to claim 4, characterised in that, The rotating mechanism (6) comprises a limiting block (601) fixedly mounted on the surface of the guide plate (505), a limiting column head (602) fixedly mounted on the surface of the limiting block (601), a sliding groove rod (603) fixedly mounted on the surface of the moving rod (504), a straight slot (604) and a circumferential slot (605) formed in the surface of the sliding groove rod (603) and matched with the limiting column head (602), one end of the straight slot (604) being smoothly connected with the circumferential slot (605), a rotating gear (606) fixedly mounted on the surface of the sliding groove rod (603), and a fixed rack plate (607) fixedly mounted on the surface of the detection plate (104) and matched with the rotating gear (606).

6. A label print quality optical detection apparatus according to claim 1, wherein The moving mechanism (7) comprises two driving motors (701) fixedly installed on the surface of the mounting rack (101), the output end of each driving motor (701) is fixedly installed with a rotating screw rod (702), the rotating screw rod (702) and a screw rod sliding block (703) form a screw pair transmission, the screw rod sliding block (703) is fixedly connected with the detection plate (104), and the screw rod sliding block (703) is slidingly connected with the mounting rack (101).

7. The label print quality optical detection apparatus according to claim 1, wherein The blanking mechanism (8) comprises a jacking cylinder (801) and a thrust cylinder (803) fixedly installed on the mounting rack (101), the output end of the jacking cylinder (801) is fixedly installed with a jacking frame (802), the output end of the thrust cylinder (803) is fixedly installed with a thrust plate (804), and the jacking cylinder (801) and the thrust cylinder (803) are connected with another output end of the controller.

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