A detection device and method for carton production

Abstract

The present invention relates to the field of carton processing technology, specifically to a detection device and method for carton production, comprising a base, an infrared projector fixedly provided on the top of the base, a first reflector movably provided on the top of the base, and a second reflector movably provided on the top of the base. By observing whether the infrared rays emitted by the bottom infrared projector and the infrared rays after three reflections coincide with the four side lines of the bottom of the sample carton, it can be determined whether the bottom of the sample carton is a qualified rectangle. If one of the infrared rays does not coincide with the corresponding sample carton side line, it means that the shape of the sample carton is not compliant and the production is unqualified. Similarly, the infrared rays emitted by the bottom reflection prism and after being reflected by the three top reflection prisms can be used to detect the regularity of the four top side lines of the sample carton. By detecting the four upper and lower side lines, it is comprehensively determined whether the sample carton is a standard rectangular box, thereby improving the accuracy of the detection.

Description

Technical Field

[0001] The present invention relates to the technical field of carton processing, and in particular to a detection device and method for carton production. Background Art

[0002] Cartons are the most widely used packaging products. They come in various sizes and models, including corrugated boxes and single-layer cardboard boxes, depending on the material used. As an indispensable part of modern logistics, packaging cartons shoulder the important responsibilities of packaging, protecting products, and ensuring aesthetics. The physical performance indicators of packaging cartons serve as the basis for their quality assessment. A stable working environment ensures the accuracy and reliability of test data. Cartons are typically cut to specified dimensions using a die-cutting device and then folded into a box shape.

[0003] After the carton is die-cut, the die-cut carton samples need to be inspected to determine whether the size and shape of the carton meet the specification requirements, so as to decide whether to mass-produce it. At present, factories generally use squares and naked eyes to inspect cartons, and the cost of manual inspection is high. In addition, the efficiency and accuracy of this inspection method are relatively limited. Therefore, it is necessary to provide a detection device for carton production to replace manual inspection. Summary of the Invention

[0004] To this end, the present invention provides a detection device and method for carton production to solve the above-mentioned problems.

[0005] The present invention provides the following technical solution: a detection device for carton production, comprising:

[0006] base;

[0007] An infrared projection unit is fixedly provided on the top of the base;

[0008] A first reflective portion is movably provided on the top of the base, and the first reflective portion is located on the back of the infrared projection portion;

[0009] A second reflecting portion, wherein the top of the base is movably provided with a second reflecting portion, and the second reflecting portion is located at the right end of the first reflecting portion;

[0010] A third reflecting portion is movably provided on the top of the base, and the third reflecting portion is located at the right end of the base;

[0011] A bottom infrared projector is fixedly provided on the top of the base, and a top infrared projector is movable thereon, wherein the bottom infrared projector and the top infrared projector are used to emit infrared rays;

[0012] A bottom reflective prism is fixedly provided inside the first reflective portion, the second reflective portion, and the third reflective portion, and a top reflective prism is movably provided inside the first reflective portion, and the bottom reflective prism and the top reflective prism are used to reflect infrared rays;

[0013] A dust cleaning mechanism is movably provided inside the first reflecting part, the second reflecting part and the third reflecting part, and the dust cleaning mechanism is used to clean the bottom reflecting prism and the top reflecting prism.

[0014] As a preferred solution of the present invention, a borrow slot is provided through the upper front portion of the infrared projection part, the top infrared projector is slidably located inside the borrow slot, the top of the infrared projection part is fixedly connected to a transfer platform, the internal thread of the transfer platform is threaded with a threaded adjustment rod, the outer wall of the threaded adjustment rod is threaded with an adjustment bent rod, and the bottom of the adjustment bent rod is fixedly connected to the top of the top infrared projector.

[0015] As a preferred solution of the present invention, a sliding groove is provided on the upper part of the corners of the first reflecting part, the second reflecting part and the third reflecting part, and a slider is slidably connected to the inside of the sliding groove. One end of the slider is fixedly connected to the back of the top reflecting prism, and the end of the slider away from the top reflecting prism is fixedly connected to a linkage bent bar, and the slider is fixedly connected to the inner bend of the linkage bent bar. A linkage bent bar is fixedly connected to the outside of the top infrared projector. There are four linkage bent bars in total, and a first sliding square tube is slidably connected between two of the linkage bent bars distributed on the left and right, and a second sliding square tube is slidably sleeved between two of the linkage bent bars distributed on the front and back.

[0016] The top end of the second end of the lifting link is fixedly provided with a lifting post, and the bottom end of the second end of the lifting link is fixedly provided with a lifting post.

[0017] As a preferred solution of the present invention, two first guide seats distributed up and down are fixedly connected to the left side of the infrared projection part, the backs of the two first guide seats are fixedly connected to the first guide columns, the outer walls of the two first guide columns are slidably connected to the first guide sleeves, the two first guide sleeves are fixedly connected to the left side of the first reflecting part, the left side of the infrared projection part is fixedly connected to the first adapter seat, the inner wall of the first adapter seat is rotatably connected to the first adjusting screw rod, the first adjusting screw rod is located between the two first guide columns, and the outer wall of the first adjusting screw rod is threadedly connected to the first wire sleeve, and the first wire sleeve is fixedly connected to the left side of the first reflecting part.

[0018] As a preferred solution of the present invention, two fourth guide seats distributed up and down are fixedly connected to the back of the first reflecting part, and the two fourth guide seats are fixedly connected to the side surface close to the second reflecting part with fourth guide columns, and the outer walls of the two fourth guide columns are slidably connected with fourth guide sleeves, and the two fourth guide sleeves are fixedly connected to the back of the second reflecting part.

[0019] As a preferred solution of the present invention, the front side of the third reflecting part is fixedly connected to two second guide seats distributed up and down, and the two second guide seats are fixedly connected to the side surface close to the infrared projection part, and the outer walls of the two second guide posts are slidably connected to the second guide sleeves, and the two second guide sleeves are fixedly connected to the front side of the infrared projection part, and the front side of the infrared projection part is fixedly connected to a second adapter seat, the second adapter seat is located between the two second guide sleeves, and the inner wall of the second guide sleeve is rotatably connected to a second adjusting screw rod, and the outer wall of the second adjusting screw rod is threadedly connected to a second wire sleeve, and the second wire sleeve is fixedly connected to the front side of the third reflecting part.

[0020] As a preferred solution of the present invention, two third guide seats distributed up and down are fixedly connected to the side surface of the second reflecting part away from the first reflecting part, and the two third guide seats are fixedly connected to the side surface close to the third reflecting part. Third guide columns are fixedly connected to the outer walls of the two third guide columns, and third guide sleeves are slidably connected, and the two third guide sleeves are fixedly connected to the side surface of the third reflecting part away from the base.

[0021] As a preferred solution of the present invention, a rectangular area is surrounded by the infrared projection part, the first reflection part, the second reflection part and the third reflection part, the bottom reflection prism and the top reflection prism are all set at 45° to the first reflection part, the second reflection part and the third reflection part, and the three bottom reflection prisms have the same height, the three top reflection prisms have the same height, and the bottom wall of the infrared projection part, the bottom wall of the first reflection part, the bottom wall of the second reflection part and the bottom wall of the third reflection part are all fixedly connected with a support block, and the support block is located at the bottom of the bottom infrared projector and the bottom reflection prism.

[0022] A detection method for a detection device for carton production, comprising the following steps:

[0023] S1. According to the size of the carton, adjust the size of the rectangular space surrounded by the infrared projection part, the infrared projection part, the second reflection part and the third reflection part, and rotate the first adjusting screw rod to make it push the first reflection part to move toward the infrared projection part under the threaded connection with the first threaded sleeve, and at the same time, under the sliding guidance of the first guide column and the first guide sleeve, the first reflection part moves toward the infrared projection part more stably. During the movement of the first reflection part, the second reflection part is further driven to move synchronously with the first reflection part under the connection between the fourth guide seat, the fourth guide column and the fourth guide sleeve, so that the second reflection part gradually approaches the third reflection part, and by rotating the second adjusting screw rod, it is pushed to move the third reflection part toward the base under the threaded connection with the second threaded sleeve, and under the sliding guidance of the two second guide columns and the second guide sleeve, the movement of the third reflection part is more stable. During the movement of the third reflection part, it is further driven by the third guide seat, the third guide column and the third guide sleeve. Under the connection between the guide column and the third guide sleeve, the second reflecting part and the third reflecting part are further driven to move synchronously, so that the second reflecting part gradually approaches the first reflecting part, thereby adjusting the size of the rectangular area surrounded by the infrared projecting part, the first reflecting part, the second reflecting part and the third reflecting part, so as to be suitable for the detection of cartons of different specifications. When the rectangular area surrounded by the infrared projecting part, the first reflecting part, the second reflecting part and the third reflecting part is adjusted to the size suitable for the detection carton, the inspector places the carton sample on the top of the four support blocks from the top. At this time, the sample carton is just located between the infrared projecting part, the first reflecting part, the second reflecting part and the third reflecting part. The position of the sample carton is slightly adjusted so that the projection end of the bottom infrared projector is just located at one of the edge lines of the lower part of the paper. At the same time, a slight gap is left between the corners of the bottom infrared projector and the bottom reflecting prism, so as not to affect the light reflection of the bottom reflecting prism;

[0024] S2. After the position of the carton is adjusted, the inspector rotates the threaded adjustment rod so that it pushes the borrow slot up or down under the threaded connection with the adjustment bent rod, and further adjusts the height of the top infrared projector, and adjusts the height of the emitting end of the top infrared projector to correspond to the top edge of the sample carton. During this period, the top infrared projector will drive a linked bent bar connected to it to move synchronously, so that under the connection of the two first sliding square tubes and the two second sliding square tubes, the remaining three linked bent bars are further moved, and the three sliders are driven to slide along the inside of the three slide grooves, and the heights of the three top reflective prisms are synchronously adjusted so that the heights of the three top reflective prisms are always consistent with the heights of the emitting end of the top infrared projector. When all adjustments are completed, the inspector starts the bottom infrared projector and the top infrared projector. The infrared rays emitted by the bottom infrared projector are just set on the bottom reflective prism inside the first reflective part, and the infrared rays are reflected through the bottom reflective prism. The external ray is reflected along the second side line of the bottom of the sample carton to the bottom reflecting prism located inside the second reflecting part, and then reflected by the bottom reflecting prism, and then it is projected along the third side line of the bottom of the sample carton to the bottom reflecting prism located inside the third reflecting part, and then it is reflected by the bottom reflecting prism and extended to the fourth side line of the bottom of the sample carton. The inspector observes whether the infrared ray emitted by the bottom infrared projector and the infrared ray after three reflections coincide with the four side lines of the bottom of the sample carton, so as to determine whether the bottom of the sample carton is a qualified rectangle. If one of the infrared rays does not coincide with the corresponding side line of the sample carton, it means that the shape of the sample carton is not in compliance and the production is unqualified. Similarly, the infrared ray emitted by the bottom reflecting prism and reflected by the three top reflecting prisms can be used to detect the regularity of the four top side lines of the sample carton. By detecting the four upper and lower side lines, it is comprehensively judged whether the sample carton is a standard rectangular box.

[0025] S3. After using it for a period of time, the inspector can press the cleaning rod downward in sequence. When the cleaning rod moves downward, the top dust brush and the bottom dust brush will move downward, and the first spring will be compressed and force will be stored. When the bottom dust brush moves downward, it will clean the dust on the mirror surface of the bottom reflective prism, thereby restoring the mirror effect of the bottom reflective prism and ensuring the infrared ray reflection performance of the bottom reflective prism. When the bottom of the bottom dust brush contacts the top of the support block, it cannot continue to move downward. During this period, if the cleaning rod is continued to be pressed, the two abutment rods will slide downward inside the bottom dust brush. The second spring is compressed and force will be stored, so that when the bottom dust brush reaches the lower dead point, it will not interfere with the continued downward movement of the top dust brush. Therefore, when the top reflective prism is adjusted to the lower dead point, the top dust brush can still clean it and clean the dust on its mirror surface.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. In the present invention, by observing whether the infrared rays emitted by the bottom infrared projector and the infrared rays after three reflections coincide with the four side lines of the bottom of the sample carton, it is possible to determine whether the bottom of the sample carton is a qualified rectangle. If one of the infrared rays does not coincide with the corresponding sample carton side line, it means that the shape of the sample carton is not compliant and the production is unqualified. Similarly, the infrared rays emitted by the bottom reflection prism and after being reflected by the three top reflection prisms can be used to detect the regularity of the four top side lines of the sample carton. By detecting the upper and lower four side lines, it is comprehensively judged whether the sample carton is a standard rectangular box, thereby improving the accuracy of the detection.

[0028] 2. In the present invention, by rotating the threaded adjustment rod, it pushes the borrow slot up or down under the threaded connection with the adjusting bent rod, and further adjusts the height of the top infrared projector, and adjusts the height of the emitting end of the top infrared projector to correspond to the top edge line of the sample carton. During this period, the top infrared projector will drive a linked bent bar connected to it to move synchronously, so that under the connection of the two first sliding square tubes and the two second sliding square tubes, the remaining three linked bent bars are further moved, and the three sliders are driven to slide along the inside of the three slide grooves, and the heights of the three top reflective prisms are synchronously adjusted, so that the heights of the three top reflective prisms are always consistent with the heights of the emitting end of the top infrared projector, so that the present detection system can be used for the detection of cartons of different heights, thereby improving the scope of application.

[0029] 3. In the present invention, by pressing the cleaning rod downward, when the cleaning rod moves downward, the top dust brush and the bottom dust brush will move downward, and the first spring will be compressed and force will be stored. When the bottom dust brush moves downward, it will clean the dust on the mirror surface of the bottom reflecting prism, thereby restoring the mirror effect of the bottom reflecting prism and ensuring the infrared ray reflection performance of the bottom reflecting prism. When the bottom of the bottom dust brush contacts the top of the supporting block, it cannot continue to move downward. During this period, if the cleaning rod is continued to be pressed, the two abutment rods will slide downward inside the bottom dust brush. The second spring is compressed and force will be stored, so that when the bottom dust brush reaches the lower dead point, it will not interfere with the continued downward movement of the top dust brush, so that when the top reflecting prism is adjusted to the lower dead point, the top dust brush can still clean it and clean the dust on its mirror surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the left front viewing angle structure of the present invention Figure 1 ;

[0031] Figure 2 This is a schematic diagram of the left front viewing angle structure of the present invention Figure 2 ;

[0032] Figure 3 This is a schematic diagram of the structure of the present invention from a right rear perspective;

[0033] Figure 4 This is a schematic diagram of infrared ray reflection of the present invention;

[0034] Figure 5 for Figure 3 A schematic diagram of the partially enlarged structure of the present invention A;

[0035] Figure 6 This is a schematic diagram of the expanded structure of the linkage bending bar, the first sliding square tube and the second sliding square tube of the present invention;

[0036] Figure 7 Schematic diagram of the structure of the first adjusting screw rod and the second adjusting screw rod of the present invention;

[0037] Figure 8 The structure of the dust cleaning mechanism of the present invention is shown as follows: Figure 1 ;

[0038] Figure 9 The structure of the dust cleaning mechanism of the present invention is shown as follows: Figure 2 .

[0039] In the figure: 1. Base; 2. Infrared projection unit; 201. Borrow slot; 3. First reflecting unit; 4. Second reflecting unit; 5. Third reflecting unit; 6. Bottom infrared projector; 7. Top infrared projector; 8. Bottom reflecting prism; 9. Top reflecting prism; 1001. First guide seat; 1002. First guide column; 1003. First guide sleeve; 1004. First adapter seat; 1005. First adjusting screw; 1006. First screw sleeve; 1101. Second guide seat; 1102. Second guide column; 1103. Second guide sleeve; 1104. Second adapter seat; 1105. Second adjusting screw; 1106. Second screw sleeve; 12. Dust collector Structure; 1201, fixed seat; 1202, telescopic sleeve; 1203, cleaning rod; 1204, top dust brush; 1206, connecting strip; 1207, first spring; 1208, abutment rod; 1209, bottom dust brush; 1210, second spring; 13, third guide seat; 1301, third guide column; 1302, third guide sleeve; 14, fourth guide seat; 1401, fourth guide column; 1402, fourth guide sleeve; 15, slide groove; 1501, slider; 1502, linkage bending strip; 16, first sliding square tube; 17, second sliding square tube; 19, transfer table; 20, threaded adjustment rod; 21, adjustment bending rod; 22, support block. DETAILED DESCRIPTION

[0040] 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.

[0041] Example: See Figures 1-9 A detection device for carton production shown in the figure includes a base 1, an infrared projecting portion 2 is fixedly provided on the top of the base 1, a first reflecting portion 3 is movably provided on the top of the base 1, the first reflecting portion 3 is located on the back of the infrared projecting portion 2, a second reflecting portion 4 is movably provided on the top of the base 1, the second reflecting portion 4 is located at the right end of the first reflecting portion 3, a third reflecting portion 5 is movably provided on the top of the base 1, the third reflecting portion 5 is located at the right end of the base 1, a bottom infrared projector 6 is fixedly provided on the top of the base 1 and a top infrared projector 7 is movably provided, the bottom infrared projector 6 and the top infrared projector 7 are used to emit infrared rays, a bottom reflecting prism 8 is fixedly provided inside the first reflecting portion 3, the second reflecting portion 4 and the third reflecting portion 5 and a top reflecting prism 9 are movably provided inside the first reflecting portion 3, the second reflecting portion 4 and the third reflecting portion 5 and a dust cleaning mechanism 12 is movably provided inside the first reflecting portion 3, the second reflecting portion 4 and the third reflecting portion 5, the dust cleaning mechanism 12 is used to clean the bottom reflecting prism 8 and the top reflecting prism 9;

[0042] Specifically, the inspector starts the bottom infrared projector 6 and the top infrared projector 7. The infrared ray emitted by the bottom infrared projector 6 is just set on the bottom reflection prism 8 inside the first reflection part 3. The infrared ray is reflected along the second side line of the bottom of the sample carton by the bottom reflection prism 8 to the bottom reflection prism 8 located inside the second reflection part 4. Then, after being reflected by the bottom reflection prism 8, it is shot along the third side line of the bottom of the sample carton to the bottom reflection prism 8 located inside the third reflection part 5. Then, it is reflected by the bottom reflection prism 8 and extends directly to the fourth side line of the bottom of the sample carton. The inspector observes By observing whether the infrared rays emitted by the bottom infrared projector 6 and the infrared rays after three reflections coincide with the four side lines of the bottom of the sample carton, it can be determined whether the bottom of the sample carton is a qualified rectangle. If one of the infrared rays does not coincide with the corresponding sample carton side line, it means that the shape of the sample carton is not compliant and the production is unqualified. Similarly, the infrared rays emitted by the bottom reflection prism 8 and after three reflections by the top reflection prism 9 can be used to detect the regularity of the four top side lines of the sample carton. By detecting the four upper and lower side lines, it can be comprehensively judged whether the sample carton is a standard rectangular box.

[0043] In this embodiment, reference Figure 1-5As shown, a positioning slot 201 is formed through the upper front portion of the infrared projection unit 2, and the top infrared projector 7 is slidably positioned within the positioning slot 201. The top of the infrared projection unit 2 is fixedly connected to a transfer platform 19, and a threaded adjustment rod 20 is screwed through the internal threads of the transfer platform 19. An adjustment curved rod 21 is threadedly connected to the outer wall of the threaded adjustment rod 20, and the bottom of the adjustment curved rod 21 is fixedly connected to the top of the top infrared projector 7.

[0044] Specifically, by rotating the threaded adjustment rod 20, it is threadedly connected to the adjustment bent rod 21, pushing the borrow slot 201 up or down, and further adjusting the height of the top infrared projector 7. The height of the transmitting end of the top infrared projector 7 is adjusted to correspond to the top edge of the sample carton, so that the detection system can be used for the detection of cartons of different heights, thereby improving the scope of application.

[0045] In this embodiment, reference Figure 1-5 As shown, a slide groove 15 is provided on the upper part of the corner of the first reflecting portion 3, the second reflecting portion 4 and the third reflecting portion 5, and a slider 1501 is slidably connected to the inside of the slide groove 15. One end of the slider 1501 is fixedly connected to the back surface of the top reflecting prism 9, and the end of the slider 1501 away from the top reflecting prism 9 is fixedly connected to a linkage bent bar 1502. The slider 1501 is fixedly connected to the inner bending part of the linkage bent bar 1502. The outside of the top infrared projector 7 is fixedly connected to a linkage bent bar 1502. There are four linkage bent bars 1502 in total, and the first sliding square tube 16 is slidably connected between the two linkage bent bars 1502 distributed on the left and right, and the second sliding square tube 17 is slidably sleeved between the two linkage bent bars 1502 distributed on the front and back.

[0046] Specifically, the height of the top infrared projector 7 is adjusted by rotating the threaded adjustment rod 20, and the top infrared projector 7 will drive a linked bent bar 1502 connected thereto to move synchronously, so that under the connection of the two first sliding square tubes 16 and the two second sliding square tubes 17, the remaining three linked bent bars 1502 are further moved, and the three sliders 1501 are driven to slide along the inside of the three slide grooves 15, so as to synchronously adjust the heights of the three top reflection prisms 9, so that the heights of the three top reflection prisms 9 are always consistent with the heights of the transmitting end of the top infrared projector 7, ensuring that the top reflection prism 9 always reflects the infrared rays emitted by the top infrared projector 7. By setting the two slide grooves 15 and the two first sliding square tubes 16 and the sliding connection of the four linked bent bars 1502, while the heights of the three top reflection prisms 9 are synchronously adjusted, it will not cause interference with the position adjustment between the first reflection part 3, the second reflection part 4 and the third reflection part 5, thereby ensuring the free adjustment of the first reflection part 3, the second reflection part 4 and the third reflection part 5.

[0047] In this embodiment, reference Figure 1-5 As shown, the dust cleaning mechanism 12 includes a fixed seat 1201, which is fixedly connected to the top of the first reflecting part 3, the second reflecting part 4 and the third reflecting part 5 respectively. The top of the fixed seat 1201 is fixedly connected to two telescopic sleeves 1202, and the interiors of the two telescopic sleeves 1202 are slidably connected to the dust cleaning rods 1203. The dust cleaning rods 1203 are arranged in a bent shape, and the tops of the dust cleaning rods 1203 are commonly connected to the top dust brushes 1204. The top dust brushes 1204 are located on the top of the bottom reflecting prism 8. The bottom ends of the dust cleaning rods 1203 are fixedly connected to the connecting strips 1206, and the tops of the connecting strips 1206 are fixedly connected A first spring 1207 is connected, and the first spring 1207 is sleeved on the outside of the cleaning rod 1203. The top of the first spring 1207 is fixedly connected to the bottom of the fixing seat 1201. The bottom of the connecting strip 1206 is fixedly connected to the abutting rod 1208. The outer wall of the abutting rod 1208 is slidably connected with the bottom ash brush 1209. The bottom ash brush 1209 is located on the top of the bottom reflecting prism 8. The outer wall of the abutting rod 1208 is sleeved with a second spring 1210. The second spring 1210 is fixedly connected to the top of the bottom ash brush 1209. The top of the second spring 1210 is fixedly connected to the bottom of the connecting strip 1206.

[0048] Specifically, after the inspection system has been used for a period of time, the inspector can press the cleaning rod 1203 downwards in sequence. When the cleaning rod 1203 moves downwards, the top dust brush 1204 and the bottom dust brush 1209 will move downwards, and the first spring 1207 will be compressed and stored. When the bottom dust brush 1209 moves downwards, it will clean the dust on the mirror surface of the bottom reflecting prism 8, thereby restoring the mirror effect of the bottom reflecting prism 8 and ensuring the infrared ray reflection performance of the bottom reflecting prism 8. When the bottom of the bottom dust brush 1209 is aligned with the support block 22, the dust on the bottom dust brush 1209 will be cleaned. After the top is in contact, it cannot move downward any further. If the dust cleaning rod 1203 is continued to be pressed, the two contact rods 1208 will slide downward inside the bottom dust brush 1209. The second spring 1210 is compressed and stores force, so that when the bottom dust brush 1209 reaches the lower dead point, it will not interfere with the continued downward movement of the top dust brush 1204. Therefore, when the top reflecting prism 9 is adjusted to the lower dead point, the top dust brush 1204 can still clean it and clean the dust on its mirror surface to ensure that the top reflecting prism 9 always has a good reflection effect.

[0049] In this embodiment, reference Figure 1-5As shown, two first guide seats 1001 distributed vertically are fixedly connected to the left side of the infrared projection part 2, and the back surfaces of the two first guide seats 1001 are fixedly connected to first guide posts 1002. The outer walls of the two first guide posts 1002 are slidably connected to first guide sleeves 1003. The two first guide sleeves 1003 are fixedly connected to the left side of the first reflection part 3. A first adapter seat 1004 is fixedly connected to the left side of the infrared projection part 2, and a first adjusting screw rod 1005 is rotatably connected to the inner wall of the first adapter seat 1004. The first adjusting screw rod 1005 is located between the two first guide posts 1002. A first threaded sleeve 1006 is threadedly connected to the outer wall of the first adjusting screw rod 1005, and the first threaded sleeve 1006 is fixedly connected to the left side of the first reflection part 3.

[0050] Two fourth guide seats 14 are fixedly connected to the back of the first reflective portion 3, and are distributed vertically. A fourth guide post 1401 is fixedly connected to one side of each of the four guide seats 14 near the second reflective portion 4. A fourth guide sleeve 1402 is slidably connected to the outer wall of each of the four guide posts 1401. Both fourth guide sleeves 1402 are fixedly connected to the back of the second reflective portion 4.

[0051] The front surface of the third reflecting portion 5 is fixedly connected to two second guide seats 1101 distributed vertically. A second guide column 1102 is fixedly connected to the side surface of the two second guide seats 1101 close to the infrared projection portion 2. A second guide sleeve 1103 is slidably connected to the outer wall of the two second guide columns 1102. The two second guide sleeves 1103 are fixedly connected to the front surface of the infrared projection portion 2. A second adapter seat 1104 is fixedly connected to the front surface of the infrared projection portion 2. The second adapter seat 1104 is located between the two second guide sleeves 1103. A second adjusting screw rod 1105 is rotatably connected to the inner wall of the second adjusting screw rod 1105. A second threaded sleeve 1106 is threadedly connected to the outer wall of the second adjusting screw rod 1105. The second threaded sleeve 1106 is fixedly connected to the front surface of the third reflecting portion 5.

[0052] Two third guide seats 13 are fixedly connected to a side of the second reflective portion 4 away from the first reflective portion 3, and two third guide seats 13 are fixedly connected to a side of the second reflective portion 4 away from the first reflective portion 3. A third guide column 1301 is fixedly connected to the side of the second reflective portion 4 close to the third reflective portion 5. A third guide sleeve 1302 is slidably connected to the outer wall of the second third guide column 1301. The two third guide sleeves 1302 are fixedly connected to the side of the third reflective portion 5 away from the base 1.

[0053] Specifically, by rotating the first adjusting screw 1005, the first reflecting portion 3 is pushed to move toward the infrared projection portion 2 under the threaded connection with the first threaded sleeve 1006. At the same time, under the sliding guidance of the first guide column 1002 and the first guide sleeve 1003, the first reflecting portion 3 moves toward the infrared projection portion 2 more stably. When the first reflecting portion 3 moves, the second reflecting portion 4 is further driven to move synchronously with the first reflecting portion 3 under the connection between the fourth guide seat 14, the fourth guide column 1401 and the fourth guide sleeve 1402, so that the second reflecting portion 4 gradually approaches the third reflecting portion 5, and by rotating the second adjusting screw 1105, the first reflecting portion 3 is pushed to move toward the infrared projection portion 2 under the threaded connection with the second threaded sleeve 1106. Under the action of the threaded connection, the third reflecting part 5 is pushed to move toward the base 1, and under the sliding guidance of the two second guide pillars 1102 and the second guide sleeve 1103, the movement of the third reflecting part 5 is more stable. During the movement of the third reflecting part 5, the connection between the third guide seat 13, the third guide pillar 1301 and the third guide sleeve 1302 further drives the second reflecting part 4 and the third reflecting part 5 to move synchronously, so that the second reflecting part 4 gradually approaches the first reflecting part 3, thereby adjusting the size of the rectangular area surrounded by the infrared projection part 2, the first reflecting part 3, the second reflecting part 4 and the third reflecting part 5, so that it is suitable for the detection of cartons of different specifications.

[0054] In this embodiment, reference Figure 1-5 As shown, a rectangular area is formed between the infrared projection part 2, the first reflection part 3, the second reflection part 4 and the third reflection part 5. The bottom reflection prism 8 and the top reflection prism 9 are all set at 45 degrees to the first reflection part 3, the second reflection part 4 and the third reflection part 5. The heights of the three bottom reflection prisms 8 are the same, and the heights of the three top reflection prisms 9 are the same.

[0055] Specifically, by setting the bottom reflecting prism 8 and the top reflecting prism 9 to 45° with the first reflecting part 3, the second reflecting part 4 and the third reflecting part 5, the infrared rays emitted by the bottom infrared projector 6 and the top infrared projector 7 are reflected by the three bottom reflecting prisms 8 and the three top reflecting prisms 9, and then form a rectangular trajectory, thereby being emitted along the edge of the sample carton, making it easy to check whether the sample carton is a rectangular box.

[0056] In this embodiment, reference Figure 1-5 As shown, the bottom wall of the infrared projection part 2, the bottom wall of the first reflection part 3, the bottom wall of the second reflection part 4 and the bottom wall of the third reflection part 5 are all fixedly connected with a support block 22, and the support block 22 is located at the bottom of the bottom infrared projector 6 and the bottom reflection prism 8;

[0057] Specifically, a support block 22 is provided to support the sample carton.

[0058] A detection method for a detection device for carton production, comprising the following steps:

[0059] S1. According to the size of the carton, adjust the size of the rectangular space surrounded by the infrared projection part 2, the infrared projection part 2, the second reflective part 4 and the third reflective part 5. By rotating the first adjusting screw 1005, it is threadedly connected with the first threaded sleeve 1006 to push the first reflective part 3 toward the infrared projection part 2. At the same time, under the sliding guidance of the first guide column 1002 and the first guide sleeve 1003, the first reflective part 3 moves toward the infrared projection part 2 more stably. When the first reflective part 3 moves, the fourth guide seat 14 and the third guide seat 1006 are connected. The connection between the four guide posts 1401 and the fourth guide sleeve 1402 further drives the second reflective part 4 and the first reflective part 3 to move synchronously, so that the second reflective part 4 gradually approaches the third reflective part 5, and by rotating the second adjusting screw rod 1105, it is threadedly connected with the second screw sleeve 1106 to push the third reflective part 5 to move toward the base 1, and under the sliding guidance of the two second guide posts 1102 and the second guide sleeve 1103, the movement of the third reflective part 5 is more stable, and when the third reflective part 5 moves During the movement, the connection between the third guide seat 13, the third guide column 1301 and the third guide sleeve 1302 further drives the second reflective part 4 and the third reflective part 5 to move synchronously, so that the second reflective part 4 gradually approaches the first reflective part 3, thereby adjusting the size of the rectangular area surrounded by the infrared projector 2, the first reflective part 3, the second reflective part 4 and the third reflective part 5, so as to be suitable for the inspection of cartons of different specifications. When the rectangular area surrounded by the infrared projector 2, the first reflective part 3, the second reflective part 4 and the third reflective part 5 is adjusted to the size suitable for the inspection carton, the inspector places the carton sample from the top on the top of the four support blocks 22. At this time, the sample carton is just located between the infrared projector 2, the first reflective part 3, the second reflective part 4 and the third reflective part 5. The position of the sample carton is slightly adjusted so that the projection end of the bottom infrared projector 6 is just located at one of the edges of the lower part of the paper. At the same time, a slight gap is left between the corners of the bottom infrared projector 6 and the bottom reflective prism 8 so as not to affect the light reflection of the bottom reflective prism 8.

[0060] S2. After the position of the carton is adjusted, the inspector rotates the threaded adjustment rod 20 so that it pushes the borrowing slot 201 up or down under the threaded connection with the adjusting bent rod 21, and further adjusts the height of the top infrared projector 7, and adjusts the height of the emitting end of the top infrared projector 7 to correspond to the top edge of the sample carton. During this period, the top infrared projector 7 will drive a linked bent bar 1502 connected to it to move synchronously, so that under the connection of the two first sliding square tubes 16 and the two second sliding square tubes 17, the remaining three linked bent bars 1502 are further moved, and drive the three sliders 1501 to slide along the inside of the three slide grooves 15, and synchronously adjust the height of the three top reflecting prisms 9, so that the height of the three top reflecting prisms 9 is always consistent with the height of the emitting end of the top infrared projector 7. When all adjustments are completed, the inspector starts the bottom infrared projector 6 and the top infrared projector 7. The infrared rays emitted by the bottom infrared projector 6 are just set at the bottom reflecting prism 8 inside the first reflecting part 3. On the top, the infrared ray is reflected by the bottom reflection prism 8 along the second side line of the bottom of the sample carton to the bottom reflection prism 8 located inside the second reflection part 4, and then reflected by the bottom reflection prism 8 along the third side line of the bottom of the sample carton to the bottom reflection prism 8 located inside the third reflection part 5, and then reflected by the bottom reflection prism 8 to extend to the fourth side line of the bottom of the sample carton. The inspector observes whether the infrared ray emitted by the bottom infrared projector 6 and the infrared ray after three reflections coincide with the four side lines of the bottom of the sample carton, so as to determine whether the bottom of the sample carton is a qualified rectangle. If one of the infrared rays does not coincide with the corresponding sample carton side line, it means that the shape of the sample carton is not compliant and the production is unqualified. Similarly, the infrared ray emitted by the bottom reflection prism 8 and reflected by the three top reflection prisms 9 can be used to detect the regularity of the four top side lines of the sample carton. By detecting the four upper and lower side lines, it is comprehensively judged whether the sample carton is a standard rectangular box.

[0061] S3. After using for a period of time, the inspector can press the cleaning rod 1203 downwards in sequence. When the cleaning rod 1203 moves downwards, the top dust brush 1204 and the bottom dust brush 1209 will move downwards, and the first spring 1207 will be compressed and stored. When the bottom dust brush 1209 moves downwards, it will clean the dust on the mirror surface of the bottom reflective prism 8, thereby restoring the mirror effect of the bottom reflective prism 8 and ensuring the infrared ray reflection performance of the bottom reflective prism 8. When the bottom dust brush 1209 moves downwards, the dust on the bottom reflective prism 8 will be cleaned. After the part contacts the top of the support block 22, it cannot move downward any further. During this period, if the cleaning rod 1203 is continued to be pressed, the two abutment rods 1208 will slide downward inside the bottom dust brush 1209. The second spring 1210 is compressed and stores force, so that when the bottom dust brush 1209 reaches the lower dead point, it will not interfere with the continued downward movement of the top dust brush 1204. Therefore, when the top reflecting prism 9 is adjusted to the lower dead point, the top dust brush 1204 can still clean it and clean the dust on its mirror surface.

[0062] In this solution, a detection device for carton production is used. When working, first, according to the size of the carton, the size of the rectangular space surrounded by the infrared projection part 2, the infrared projection part 2, the second reflection part 4 and the third reflection part 5 is adjusted. By rotating the first adjusting screw 1005, it is threadedly connected with the first wire sleeve 1006 to push the first reflection part 3 toward the infrared projection part 2. At the same time, it is guided by the sliding of the first guide column 1002 and the first guide sleeve 1003, so that the first reflection part 3 moves toward the infrared projection part 2 more stably. When the first reflection part 3 moves During this period, the second reflective portion 4 and the first reflective portion 3 are further driven to move synchronously under the connection between the fourth guide seat 14, the fourth guide column 1401 and the fourth guide sleeve 1402, so that the second reflective portion 4 gradually approaches the third reflective portion 5, and by rotating the second adjusting screw 1105, it is threadedly connected with the second screw sleeve 1106 to push the third reflective portion 5 to move toward the base 1, and under the sliding guidance of the two second guide columns 1102 and the second guide sleeve 1103, the movement of the third reflective portion 5 is more stable. When the third reflector 5 moves, the connection between the third guide seat 13, the third guide column 1301 and the third guide sleeve 1302 further drives the second reflector 4 and the third reflector 5 to move synchronously, so that the second reflector 4 gradually approaches the first reflector 3, thereby adjusting the size of the rectangular area surrounded by the infrared projection part 2, the first reflector 3, the second reflector 4 and the third reflector 5, so as to be suitable for the detection of cartons of different specifications. After the rectangular area surrounded by the three reflective sections 5 is adjusted to fit the size of the test carton, the inspector places the carton sample from the top on top of the four support blocks 22. At this time, the sample carton is exactly located between the infrared projection section 2, the first reflective section 3, the second reflective section 4, and the third reflective section 5. The position of the sample carton is slightly adjusted so that the projection end of the bottom infrared projector 6 is exactly located at one of the lower edges of the paper. At the same time, a slight gap is left between the corners of the bottom infrared projector 6 and the bottom reflective prism 8 so as not to affect the light reflection of the bottom reflective prism 8.

[0063] When the position of the carton is adjusted, the inspector rotates the threaded adjustment rod 20 so that it pushes the borrowing slot 201 up or down under the threaded connection with the adjustment bent rod 21, and further adjusts the height of the top infrared projector 7, and adjusts the height of the emitting end of the top infrared projector 7 to correspond to the top edge of the sample carton. During this period, the top infrared projector 7 will drive a linked bent bar 1502 connected to it to move synchronously, so that under the connection of the two first sliding square tubes 16 and the two second sliding square tubes 17, the remaining three linked bent bars 1502 are further moved, and drive the three sliders 1501 to slide along the inside of the three slide grooves 15, and synchronously adjust the height of the three top reflecting prisms 9, so that the height of the three top reflecting prisms 9 is always consistent with the height of the emitting end of the top infrared projector 7. When all adjustments are completed, the inspector starts the bottom infrared projector 6 and the top infrared projector 7, and the infrared rays emitted by the bottom infrared projector 6 are just set on the bottom reflecting prism 8 inside the first reflecting part 3. , the infrared ray is reflected by the bottom reflection prism 8 along the second bottom edge of the sample carton to the bottom reflection prism 8 located inside the second reflection part 4, and then reflected by the bottom reflection prism 8 along the third bottom edge of the sample carton to the bottom reflection prism 8 located inside the third reflection part 5, and then reflected by the bottom reflection prism 8 to extend directly to the fourth bottom edge of the sample carton. The inspector observes whether the infrared ray emitted by the bottom infrared projector 6 and the infrared ray after three reflections coincide with the four bottom edges of the sample carton, thereby determining whether the bottom of the sample carton is a qualified rectangle. If one of the infrared rays does not coincide with its corresponding sample carton edge, it indicates that the shape of the sample carton is not compliant and the production is unqualified. Similarly, the infrared ray emitted by the bottom reflection prism 8 and reflected by the three top reflection prisms 9 can be used to detect the regularity of the four top edges of the sample carton. By detecting the four upper and lower edges, it is comprehensively determined whether the sample carton is a standard rectangular box.

[0064] After the inspection system has been used for a period of time, the inspector can press the cleaning rod 1203 downwards in sequence. When the cleaning rod 1203 moves downwards, the top dust brush 1204 and the bottom dust brush 1209 will move downwards, and the first spring 1207 will be compressed and stored. When the bottom dust brush 1209 moves downwards, it will clean the dust on the mirror surface of the bottom reflective prism 8, thereby restoring the mirror effect of the bottom reflective prism 8 and ensuring the infrared ray reflection performance of the bottom reflective prism 8. After the bottom contacts the top of the support block 22, it cannot move further downward. During this period, if the cleaning rod 1203 is continued to be pressed, the two abutment rods 1208 will slide downward inside the bottom dust brush 1209. The second spring 1210 is compressed and stores force, so that when the bottom dust brush 1209 reaches the lower dead point, it will not interfere with the continued downward movement of the top dust brush 1204. Therefore, when the top reflecting prism 9 is adjusted to the lower dead point, the top dust brush 1204 can still clean it and clean the dust on its mirror surface.

[0065] 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. A detection device for carton production, characterized by: Includes: Base (1); An infrared projection part (2), the infrared projection part (2) is fixedly provided on the top of the base (1), and a borrowing slot (201) is provided through the upper front part of the infrared projection part (2); A first reflecting portion (3), wherein the top of the base (1) is movably provided with the first reflecting portion (3), and the first reflecting portion (3) is located on the back of the infrared projection portion (2); A second reflecting portion (4), wherein the top of the base (1) is movably provided with a second reflecting portion (4), and the second reflecting portion (4) is located at the right end of the first reflecting portion (3); A third reflecting portion (5), wherein the top of the base (1) is movably provided with a third reflecting portion (5), and the third reflecting portion (5) is located at the right end of the base (1); A bottom infrared projector (6) is fixedly provided on the top of the base (1), and a top infrared projector (7) is movably provided. The bottom infrared projector (6) and the top infrared projector (7) are used to emit infrared rays. A bottom reflecting prism (8) is fixedly provided inside the first reflecting portion (3), the second reflecting portion (4) and the third reflecting portion (5), and a top reflecting prism (9) is movably provided therein. The bottom reflecting prism (8) and the top reflecting prism (9) are used to reflect infrared rays. The first reflecting part (3), the second reflecting part (4) and the third reflecting part (5) are all provided with a movably provided dust cleaning mechanism (12) inside, and the dust cleaning mechanism (12) is used to clean the bottom reflecting prism (8) and the top reflecting prism (9). The top infrared projector (7) is slidably located inside the borrowing slot (201). The top of the infrared projector (2) is fixedly connected with a transfer table (19). The internal thread of the transfer table (19) is threadedly connected with a threaded adjustment rod (20). The outer wall of the threaded adjustment rod (20) is threadedly connected with an adjustment bent rod (21). The bottom of the adjustment bent rod (21) is fixedly connected with the top of the top infrared projector (7). The upper part of the corner of the first reflecting part (3), the second reflecting part (4) and the third reflecting part (5) is provided with a slide groove (15) through it. The interior of the slide groove (15) is slidably connected to a slider (1501), one end of the slider (1501) is fixedly connected to the back of the top reflective prism (9), and the end of the slider (1501) away from the top reflective prism (9) is fixedly connected to a linkage bend (1502), and the slider (1501) is fixedly connected to the inner bend of the linkage bend (1502). The outside of the top infrared projector (7) is fixedly connected to a linkage bend (1502), and there are four linkage bends (1502), among which the first sliding square tube (16) is slidably connected between the two linkage bends (1502) distributed on the left and right, and the second sliding square tube (17) is slidably sleeved between the two linkage bends (1502) distributed on the front and back.

2. A carton production detection device according to claim 1, characterized in that: The dust cleaning mechanism (12) includes a fixed seat (1201), the fixed seat (1201) is fixedly connected to the top of the first reflecting part (3), the second reflecting part (4) and the third reflecting part (5), the top of the fixed seat (1201) is fixedly connected to two telescopic sleeves (1202), the interiors of the two telescopic sleeves (1202) are slidably connected to a dust cleaning rod (1203), the dust cleaning rod (1203) is arranged in a bent shape, the top of the dust cleaning rod (1203) is commonly connected to a top dust brush (1204), the top dust brush (1204) is located on the top of the bottom reflecting prism (8), the bottom end of the dust cleaning rod (1203) is fixedly connected to a connecting strip (1206), the top of the connecting strip (1206) is fixedly connected There is a first spring (1207), which is sleeved on the outside of the cleaning rod (1203), and the top of the first spring (1207) is fixedly connected to the bottom of the fixing seat (1201), and the bottom of the connecting strip (1206) is fixedly connected to the abutting rod (1208), and the outer wall of the abutting rod (1208) is slidably connected to the bottom dust brush (1209), and the bottom dust brush (1209) is located at the top of the bottom reflecting prism (8), and the outer wall of the abutting rod (1208) is sleeved with a second spring (1210), and the second spring (1210) is fixedly connected to the top of the bottom dust brush (1209), and the top of the second spring (1210) is fixedly connected to the bottom of the connecting strip (1206).

3. A carton production detection device according to claim 2, characterized in that: Two first guide seats (1001) distributed in an upper and lower direction are fixedly connected to the left side of the infrared projection part (2); the backs of the two first guide seats (1001) are fixedly connected to first guide posts (1002); the outer walls of the two first guide posts (1002) are slidably connected to first guide sleeves (1003); the two first guide sleeves (1003) are fixedly connected to the left side of the first reflection part (3); a first adapter seat (1004) is fixedly connected to the left side of the infrared projection part (2); a first adjusting screw rod (1005) is rotatably connected to the inner wall of the first adapter seat (1004); the first adjusting screw rod (1005) is located between the two first guide posts (1002); and a first threaded sleeve (1006) is threadedly connected to the outer wall of the first adjusting screw rod (1005); and the first threaded sleeve (1006) is fixedly connected to the left side of the first reflection part (3).

4. A carton production detection device according to claim 3, characterized in that: The back of the first reflecting portion (3) is fixedly connected to two fourth guide seats (14) distributed up and down, and the two fourth guide seats (14) are fixedly connected to a side surface close to the second reflecting portion (4) with a fourth guide column (1401), and the outer walls of the two fourth guide columns (1401) are slidably connected to a fourth guide sleeve (1402), and the two fourth guide sleeves (1402) are fixedly connected to the back of the second reflecting portion (4).

5. The detection device for carton production according to claim 4, characterized in that: The front of the third reflecting part (5) is fixedly connected to two second guide seats (1101) distributed up and down, and the two second guide seats (1101) are fixedly connected to a second guide column (1102) on a side surface close to the infrared projection part (2), and the outer walls of the two second guide columns (1102) are slidably connected to a second guide sleeve (1103), and the two second guide sleeves (1103) are fixedly connected to the front of the infrared projection part (2). The front of the infrared projection part (2) is fixedly connected to a second adapter seat (1104), and the second adapter seat (1104) is located between the two second guide sleeves (1103). The inner wall of the second guide sleeve (1103) is rotatably connected to a second adjusting screw rod (1105), and the outer wall of the second adjusting screw rod (1105) is threadedly connected to a second threaded sleeve (1106), and the second threaded sleeve (1106) is fixedly connected to the front of the third reflecting part (5).

6. The detection device for carton production according to claim 5, characterized in that: Two third guide seats (13) distributed up and down are fixedly connected to a side surface of the second reflective portion (4) away from the first reflective portion (3), and third guide columns (1301) are fixedly connected to a side surface of the two third guide seats (13) close to the third reflective portion (5). Third guide sleeves (1302) are slidably connected to the outer walls of the two third guide columns (1301), and the two third guide sleeves (1302) are fixedly connected to a side surface of the third reflective portion (5) away from the base (1).

7. The detection device for carton production according to claim 6, characterized in that: The infrared projection part (2), the first reflection part (3), the second reflection part (4) and the third reflection part (5) form a rectangular area. The bottom reflection prism (8) and the top reflection prism (9) are all set at 45 degrees to the first reflection part (3), the second reflection part (4) and the third reflection part (5). The three bottom reflection prisms (8) are all the same height. The three top reflection prisms (9) are all the same height. The bottom wall of the infrared projection part (2), the bottom wall of the first reflection part (3), the bottom wall of the second reflection part (4) and the bottom wall of the third reflection part (5) are all fixedly connected with a support block (22). The support block (22) is located at the bottom of the bottom infrared projector (6) and the bottom reflection prism (8).

8. The detection method of a detection device for carton production according to claim 7, characterized in that: The following steps are included: S1. According to the size of the carton, adjust the size of the rectangular space enclosed by the infrared projection part (2), the infrared projection part (2), the second reflective part (4) and the third reflective part (5). By rotating the first adjusting screw (1005), the first reflective part (3) is pushed to move toward the infrared projection part (2) under the threaded connection with the first thread sleeve (1006). At the same time, under the sliding guidance of the first guide column (1002) and the first guide sleeve (1003), the first reflective part (3) moves toward the infrared projection part (2) more stably. When the first reflective part (3) moves, the fourth guide seat (14) The connection between the second guide column (1401) and the fourth guide sleeve (1402) further drives the second reflective portion (4) and the first reflective portion (3) to move synchronously, so that the second reflective portion (4) gradually approaches the third reflective portion (5), and by rotating the second adjusting screw (1105), the third reflective portion (5) is pushed to move toward the base (1) under the action of the threaded connection with the second screw sleeve (1106), and under the sliding guidance of the two second guide columns (1102) and the second guide sleeve (1103), the movement of the third reflective portion (5) is more stable, and when the third reflective portion (5) is (5) During the movement, under the connection between the third guide seat (13), the third guide column (1301) and the third guide sleeve (1302), the second reflective part (4) and the third reflective part (5) are further driven to move synchronously, so that the second reflective part (4) gradually approaches the first reflective part (3), thereby adjusting the size of the rectangular area surrounded by the infrared projection part (2), the first reflective part (3), the second reflective part (4) and the third reflective part (5), so as to be suitable for the detection of cartons of different specifications. When the infrared projection part (2), the first reflective part (3), the second reflective part (4) and the third reflective part (5) are After the rectangular area surrounded by the third reflective portion (5) is adjusted to fit the size of the test carton, the inspector places the carton sample on top of the four support blocks (22) from the top. At this time, the sample carton is just located between the infrared projection portion (2), the first reflective portion (3), the second reflective portion (4) and the third reflective portion (5). The position of the sample carton is slightly adjusted so that the projection end of the bottom infrared projector (6) is just located at one of the edges of the lower part of the paper. At the same time, a slight gap is left between the corners of the bottom infrared projector (6) and the bottom reflective prism (8), so as not to affect the light reflection of the bottom reflective prism (8); S2. After the position of the carton is adjusted, the inspector rotates the threaded adjustment rod (20) so that it pushes the borrowing slot (201) up or down under the threaded connection with the adjustment bent rod (21), and further adjusts the height of the top infrared projector (7). The height of the transmitting end of the top infrared projector (7) is adjusted to correspond to a top edge of the sample carton. During this period, the top infrared projector (7) will drive a linked bent strip (1502) connected thereto to move synchronously, so that the two first sliding square tubes (16) and the two second sliding square tubes (17 ) is connected, the remaining three linkage bending bars (1502) are further moved, and the three sliders (1501) are driven to slide along the inside of the three slide grooves (15), and the heights of the three top reflection prisms (9) are synchronously adjusted, so that the heights of the three top reflection prisms (9) are always consistent with the height of the emission end of the top infrared projector (7). When all adjustments are completed, the inspector starts the bottom infrared projector (6) and the top infrared projector (7), and the infrared rays emitted by the bottom infrared projector (6) are just located inside the first reflection part (3). The infrared rays are reflected by the bottom reflecting prism (8) along the second side line of the bottom of the sample carton to the bottom reflecting prism (8) located inside the second reflecting part (4), and then reflected by the bottom reflecting prism (8) along the third side line of the bottom of the sample carton to the bottom reflecting prism (8) located inside the third reflecting part (5), and then reflected by the bottom reflecting prism (8) to extend to the fourth side line of the bottom of the sample carton. The inspector observes the infrared rays emitted by the bottom infrared projector (6) and the three Whether the infrared ray after the second reflection coincides with the four edges of the bottom of the sample carton can be judged to determine whether the bottom of the sample carton is a qualified rectangle. If one of the infrared rays does not coincide with the corresponding edge of the sample carton, it means that the shape of the sample carton is not compliant and the production is unqualified. Similarly, the infrared ray emitted by the bottom reflection prism (8) and reflected by the three top reflection prisms (9) can be used to detect the regularity of the four edges of the top of the sample carton. By detecting the four upper and lower edges, it can be comprehensively judged whether the sample carton is a standard rectangular box. S3. After using for a period of time, the inspector can press the cleaning rod (1203) downwards in sequence. When the cleaning rod (1203) moves downwards, the top dust brush (1204) and the bottom dust brush (1209) will move downwards, and the first spring (1207) will be compressed and stored. When the bottom dust brush (1209) moves downwards, the dust on the mirror surface of the bottom reflective prism (8) will be cleaned, thereby restoring the mirror effect of the bottom reflective prism (8) and ensuring the infrared ray reflection performance of the bottom reflective prism (8). When the bottom dust brush (1209) After the bottom contacts the top of the support block (22), it cannot move further downward. During this period, if the cleaning rod (1203) is continued to be pressed, the two abutting rods (1208) will slide downward inside the bottom dust brush (1209). The second spring (1210) is compressed and stores force, so that when the bottom dust brush (1209) reaches the lower dead point, it will not interfere with the continued downward movement of the top dust brush (1204). Therefore, when the top reflecting prism (9) is adjusted to the lower dead point, the top dust brush (1204) can still clean it and clean the dust on its mirror surface.

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