Thickness detection device for corrugated paper packaging box production and use method

Abstract

The invention relates to the technical field of corrugated paper box production, in particular to a thickness detection device for corrugated paper box production and a using method, the thickness detection device comprises a C-shaped frame, a paperboard placing groove is formed in the upper surface of the bottom of the C-shaped frame and used for positioning a corrugated paperboard, and the lower surface of the top of the C-shaped frame is connected with a reset mechanism. The upper surface of the bottom of the C-shaped frame is connected with a scale plate, the top of the C-shaped frame is connected with a measuring mechanism and an adjusting mechanism, the measuring mechanism is used for measuring the thickness and flatness of a corrugated board, and the adjusting mechanism is used for adjusting a thickness measurement value according to the flatness of the corrugated board. Through cooperative use of the measuring mechanism and the adjusting mechanism, self-adaptive compensation of a thickness measurement value is realized, when the surface of the corrugated board is uneven due to uneven thickness distribution, the average value of the thickness of the corrugated board can be detected, the flatness of the corrugated board can be measured, and the measurement accuracy of the corrugated board is improved. And then the thickness data is adjusted through the measured flatness, so that the production quality of the packaging box is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of corrugated paper box production, and in particular to a thickness detection device for corrugated paper packaging box production and a use method thereof. Background Art

[0002] Corrugated cardboard is made into corrugated boxes through die-cutting, creasing, nailing or gluing. Corrugated boxes are the most widely used packaging products, and their usage has always been the highest among various packaging products, including calcium plastic corrugated boxes. For more than half a century, corrugated boxes have gradually replaced wooden boxes and other transport packaging containers with their superior performance and good processing properties, becoming the main force of transport packaging. In addition to protecting goods and facilitating warehousing and transportation, they also play a role in beautifying and promoting goods. Corrugated boxes are green and environmentally friendly products. They are beneficial to the environment and facilitate loading and unloading and transportation.

[0003] Existing corrugated cardboard thickness detection devices generally detect the thickness of one area of ​​the corrugated cardboard. However, this method has a major defect. It is difficult to detect multiple areas of the corrugated cardboard at the same time, resulting in large deviations in the measurement data when convex or concave areas appear in the detection area. If other areas outside the detection area are uneven, it will affect the quality of the packaging box. Therefore, it is necessary to detect the flatness of the corrugated cardboard. If the corrugated cardboard is uneven, that is, if the thickness distribution on the surface of the corrugated cardboard is uneven, the single-point detection data is difficult to represent the overall thickness characteristics, which will lead to inaccurate detected thickness. However, existing thickness detection devices have difficulty detecting the flatness of the corrugated cardboard, making it difficult to measure the average thickness of the corrugated cardboard based on the flatness. Summary of the Invention

[0004] The object of the present invention is to provide a thickness detection device for the production of corrugated cardboard packaging boxes and a method for use thereof, so as to solve the problems raised in the above-mentioned background technology. To achieve the above-mentioned object, the present invention provides the following technical solution: A thickness detection device for the production of corrugated cardboard packaging boxes comprises a C-shaped frame, wherein the upper surface of the bottom of the C-shaped frame is provided with a cardboard placement groove for locating the position of the corrugated cardboard, the lower surface of the top of the C-shaped frame is connected to a reset mechanism, the upper surface of the bottom of the C-shaped frame is connected to a scale plate, and the lower surface of the top of the C-shaped frame is connected to a measuring mechanism and an adjusting mechanism, wherein the measuring mechanism is used to measure the thickness and flatness of the corrugated cardboard, and the adjusting mechanism is used to adjust the thickness measurement value according to the flatness of the corrugated cardboard.

[0005] Preferably, the measuring mechanism includes a cylinder connected to both sides of the lower surface of the top of the C-frame, the driving end of the cylinder is connected to a lifting plate, the bottom of the lifting plate is connected to a thickness measuring component, the top of the thickness measuring component is connected to a flatness measuring component, and the flatness measuring component is connected to the C-frame.

[0006] Preferably, the thickness measuring assembly includes a first telescopic member slidably connected to both sides of the bottom of the lifting plate, first springs are connected to both sides of the first telescopic member, and the top of the first telescopic member is connected to a translation block; The center of the lifting plate is connected to a T-shaped rod through a first ball rotating pair, and both sides of the bottom of the T-shaped rod are rotatably connected to the moving block, and the moving block is slidably connected to the translation block; A lifting assembly is connected to multiple top corners of the bottom of the lifting plate. The lifting assembly includes a second telescopic member connected to the bottom of the lifting plate. The bottom of the second telescopic member is connected to a lifting column. The bottom of the lifting column is connected to a pressure block. The lifting column cooperates with the translation block.

[0007] Preferably, the flatness measuring assembly includes a sixth telescopic member connected to the lower surface of the top of the C-shaped frame, one side of the bottom of the sixth telescopic member is fixedly connected to the first pointer, the bottom of the sixth telescopic member is fixedly connected to the fixed rod, the bottom of the fixed rod is connected to the deflection plate through a second ball rotating pair, a synchronization assembly is connected at the bottom center of the deflection plate, the bottom of the synchronization assembly is connected to the first ball rotating pair, the synchronization assembly includes a pillar connected to the top of the first ball rotating pair, the top of the pillar is connected to the third telescopic member through the second ball rotating pair, and the top of the third telescopic member is fixedly connected to the deflection plate; The bottom of the fixed rod is rotatably connected to the rotating telescopic assembly, and the rotating telescopic assembly is slidably connected to the deflection plate; The top of the fixed rod is rotatably connected to a protractor disc, which cooperates with the first pointer. The bottom of the protractor disc is connected to a telescopic ring on the outside. The telescopic ring includes a fixed ring fixedly connected to the bottom of the protractor disc. The bottom of the fixed ring is slidably connected to a sleeve ring, which is connected to a synchronization plate.

[0008] Preferably, the rotary telescopic assembly includes a cross bar rotatably connected to the bottom of the fixed rod, one end of the cross bar is connected to a counterweight block, the other end of the cross bar is connected to the bottom of a fourth telescopic member, the fourth telescopic member is provided with a second spring, the bottom of the fourth telescopic member is fixedly connected to a synchronization plate, the synchronization plate is connected to the telescopic ring, the bottom of the synchronization plate is connected to a slide via a third ball rotating pair, and the slide is slidably connected to the deflection disk.

[0009] Preferably, the adjustment mechanism comprises a rotating ring rotatably connected to the outer wall of the collar, the rotating ring is fixedly connected to an L-shaped rod on both sides, the bottom of the L-shaped rod is fixedly connected to an L-shaped plate, the bottom of the L-shaped plate is fixedly connected to a second pointer on both sides, and the second pointer cooperates with the scale plate; The top of the L-shaped plate is connected to the fifth telescopic member, and the fifth telescopic member is connected to the C-shaped frame.

[0010] Preferably, the reset mechanism comprises an inclined ring fixedly connected to the top of the protractor disc; The lower surface of the top of the C-shaped frame is fixedly connected to a vertical rod, and the bottom end of the vertical rod is rotatably connected to a roller, and the roller is matched with the tilting ring.

[0011] Preferably, the method for using the thickness detection device for producing corrugated paper packaging boxes comprises the following steps: S1: First, place the corrugated cardboard on the C-frame; S2: The lifting plate is lowered by the cylinder, thereby lowering the thickness measuring assembly and the flatness measuring assembly. When the thickness measuring assembly contacts the corrugated cardboard, the approximate thickness of the cardboard can be measured. The thickness measuring assembly and the flatness measuring assembly are then lowered further until the extrusion force reaches the set threshold, and then the extrusion is stopped. During the extrusion process, the flatness measuring assembly measures the flatness of the cardboard by squeezing the cardboard, and can also measure the tilt angle; S3: The thickness data is adjusted according to the flatness of the cardboard through the adjustment mechanism, thereby measuring the average thickness of the cardboard, and then the measured data is recorded by the staff.

[0012] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, the flatness detection of the corrugated cardboard and the adaptive compensation of the thickness measurement value according to the flatness are realized by the coordinated use of the measuring mechanism and the adjusting mechanism. When the surface of the corrugated cardboard is uneven due to uneven thickness distribution, the average thickness of the corrugated cardboard can be detected, and the flatness of the corrugated cardboard can be measured. Then, the thickness data is adjusted according to the measured flatness, so that the measured thickness data can be made more accurate. The corrugated cardboard can be further screened according to the flatness, and unqualified corrugated cardboard can be eliminated, thereby ensuring the production quality of the packaging box from the source. The reduction ratio between multiple areas can be measured according to the rotation angle of the protractor disk, so that the thinnest area of ​​the cardboard can be accurately located, providing data support for production process optimization. In the present invention, a measuring mechanism can detect multiple areas simultaneously, and calibrate data according to the thickness difference of each area. In addition, the cardboard is stopped from being squeezed according to the squeezing force of the pressure blocks, so that the squeezing forces of the multiple pressure blocks are close to each other. At this time, the pressure blocks are stopped from descending, so that the measurement data is more accurate and damage to the corrugated cardboard is avoided. The average thickness can be accurately calculated, and the detection accuracy is significantly improved. The efficiency and reliability of thickness measurement are achieved, and a more accurate quantitative basis is provided for the quality control of the corrugated cardboard. In the present invention, through the coordinated use of the reset mechanism and the measuring mechanism, when the measuring mechanism rises, the protractor disk can be driven to rotate and reset with the help of the extrusion force, effectively avoiding the problem of distortion of the next measurement data caused by residual angle deviation. The linkage mechanism realizes the automatic zeroing calibration of the protractor disk through the precise coordination of the mechanical structure, ensuring that the starting reference of each round of measurement is consistent, and ensuring the continuity and reliability of the thickness detection data. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic structural diagram of the present invention as a whole; Figure 2 It is a three-dimensional schematic diagram of the present invention as a whole; Figure 3 This is a schematic diagram of the structure of the present invention without the C-frame as a whole; Figure 4 It is a schematic structural diagram of the measuring mechanism, partial structure of the regulating mechanism and the reset mechanism of the present invention; Figure 5 It is a structural diagram of the measuring mechanism and the regulating mechanism of the present invention; Figure 6 A cross-sectional view of a portion of the measuring mechanism and the adjusting mechanism of the present invention; Figure 7 for Figure 6 Enlarged view of point A in the middle; Figure 8 Schematic diagram of the thickness measurement assembly of the present invention when viewed from above; Figure 9 2 is a cross-sectional view of the thickness measurement assembly of the present invention.

[0014] In the figure: 1, C-shaped frame; 2, measuring mechanism; 21, cylinder; 22, lifting plate; 23, first telescopic member; 24, first spring; 25, translation block; 26, second telescopic member; 27, lifting column; 28, pressure block; 29, moving block; 210, T-shaped rod; 211, support; 212, third telescopic member; 213, deflection plate; 214, slide plate; 215, fourth telescopic member; 216, second spring; 217, Cross bar; 218, counterweight; 219, fixed rod; 220, protractor; 221, sixth telescopic member; 222, first pointer; 223, fixed ring; 224, sleeve ring; 225, synchronization plate; 3, adjustment mechanism; 31, rotating ring; 32, L-shaped rod; 33, L-shaped plate; 34, fifth telescopic member; 35, second pointer; 4, scale plate; 5, reset mechanism; 51, vertical rod; 52, roller; 53, tilting ring. DETAILED DESCRIPTION

[0015] 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. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0016] See also Figures 1 to 9The present invention provides a technical solution: a thickness detection device for corrugated cardboard packaging box production, comprising a C-shaped frame 1. A reset mechanism 5 is connected to the lower surface of the top of the C-shaped frame 1. A scale plate 4 is connected to the upper surface of the bottom of the C-shaped frame 1. A measuring mechanism 2 and an adjustment mechanism 3 are connected to the lower surface of the top of the C-shaped frame 1. The measuring mechanism 2 is used to measure the thickness and flatness of the corrugated cardboard, and the adjustment mechanism 3 is used to adjust the thickness measurement value based on the flatness of the corrugated cardboard. It should be noted that a cardboard placement groove is provided on the upper surface of the bottom of the C-shaped frame 1 for locating the position of the corrugated cardboard.

[0017] In this embodiment, Figures 2 to 9 As shown, the measuring mechanism 2 includes a cylinder 21 connected to both sides of the lower surface of the top of the C-frame 1, the driving end of the cylinder 21 is connected to a lifting plate 22, the bottom of the lifting plate 22 is connected to the thickness measuring component, the top of the thickness measuring component is connected to the flatness measuring component, and the flatness measuring component is connected to the C-frame 1.

[0018] In this embodiment, Figures 8 and 9 As shown, the thickness measurement assembly includes a first telescopic member 23 slidably connected to both sides of the bottom of the lifting plate 22. First springs 24 are connected to both sides of the first telescopic member 23, and the top of the first telescopic member 23 is connected to a translation block 25. It should be noted that: the bottom of the translation block 25 is provided with first inclined surfaces on both sides, and the bottom of the lifting plate 22 is provided with rectangular grooves on both sides. The grooves are fixed with limit rods, which are slidably connected to the holes set in the top of the first telescopic member 23. The first spring 24 is sleeved on both sides of the limit rod, and one end of the first spring 24 is connected to the first telescopic member 23.

[0019] The center of the lifting plate 22 is connected to the T-bar 210 via a first ball-and-socket reciprocating joint. The bottom of the T-bar 210 is pivotally connected to the moving block 29 on both sides. The moving block 29 is slidably connected to the translation block 25. It should be noted that one side of the translation block 25 has a rectangular hole, which is slidably connected to the moving block 29. The first ball-and-socket reciprocating joint includes a first rotating ball fixedly connected to the top of the T-bar 210 and a first rotating seat fixed to the center of the lifting plate 22. The rotating ball and the rotating seat cooperate.

[0020] The lifting plate 22 is connected to a lifting assembly at multiple corners at the bottom. The lifting assembly includes a second telescopic member 26 connected to the bottom of the lifting plate 22. The bottom of the second telescopic member 26 is connected to a lifting column 27. The bottom of the lifting column 27 is connected to a pressure block 28. The lifting column 27 cooperates with the translation block 25. It should be noted that a second inclined surface is provided on the top of the lifting column 27, which cooperates with the first inclined surface. The pressure block 28 is provided with a pressure sensor for detecting the squeezing force of the pressure block 28 on the corrugated cardboard. When the values ​​of the multiple pressure sensors are close and reach the set threshold, the cylinder 21 stops working to prevent excessive squeezing force from damaging the corrugated cardboard. When the two lifting columns 27 on one side rise, they can squeeze the translation block 25 to move the translation block 25, thereby deflecting the T-bar 210. When the translation block 25 on one side rises, the T-bar 210 can be deflected.

[0021] In this embodiment, Figures 4 to 7 As shown, the flatness measurement assembly includes a sixth telescopic member 221 connected to the lower surface of the top of the C-shaped frame 1. One side of the bottom of the sixth telescopic member 221 is fixedly connected to the first pointer 222. The bottom of the sixth telescopic member 221 is fixedly connected to the fixed rod 219. The bottom of the fixed rod 219 is connected to the deflection disk 213 via a second ball rotating pair. The deflection disk 213 is connected to a synchronization assembly at the bottom center. The synchronization assembly is connected to the first ball rotating pair at the bottom. The synchronization assembly includes a support 211 connected to the top of the first ball rotating pair. The top of the support 211 is connected to the third telescopic member 212 via a second ball rotating pair. The top of the third telescopic member 212 is fixedly connected to the deflection disk 213. It should be noted that the second ball rotating pair includes a second rotating ball fixedly connected to the bottom of the fixed rod 219 and a second rotating seat fixedly connected to the top center of the deflection disk 213. The second rotating seat cooperates with the second rotating ball.

[0022] The bottom of the fixed rod 219 is rotatably connected to the rotating telescopic assembly, and the rotating telescopic assembly is slidably connected to the deflection plate 213. It should be noted that an annular limiting groove is provided on the outer side of the top of the deflection plate 213.

[0023] The top of the fixed rod 219 is rotatably connected to a protractor disc 220, which cooperates with a first pointer 222. The bottom of the protractor disc 220 is connected to a telescopic ring on the outside. The telescopic ring includes a fixed ring 223 fixedly connected to the bottom of the protractor disc 220. The bottom of the fixed ring 223 is slidably connected to a collar 224, which is connected to a synchronization plate 225. It should be noted that the support 211 is fixedly connected to the top of the rotating ball. The rotation of the T-bar 210 drives the support 211 to deflect, thereby extending and deflecting the third telescopic member 212, thereby tilting the deflection disc 213. Subsequently, the telescopic ring and the protractor disc 220 can be rotated by rotating the telescopic assembly, thereby measuring the rotation angle of the protractor disc 220 and the deflection direction of the deflection disc 213. The deflection angle of the T-bar 210 can be clearly seen through the deflection disc 213.

[0024] In this embodiment, Figure 4 、 Figure 6 and Figure 7 As shown, the rotary telescopic assembly includes a cross bar 217 rotatably connected to the bottom of the fixed rod 219, one end of the cross bar 217 is connected to a counterweight block 218, and the other end of the cross bar 217 is connected to the bottom of the fourth telescopic member 215, the fourth telescopic member 215 is provided with a second spring 216, the bottom of the fourth telescopic member 215 is fixedly connected to a synchronization plate 225, the synchronization plate 225 is connected to the telescopic ring, the bottom of the synchronization plate 225 is connected to the slide 214 through the third ball rotating pair, and the slide 214 is slidably connected to the deflection plate 213. It should be noted that the third ball rotating pair includes a third rotating ball fixedly connected to the bottom of the synchronization plate 225 and a third rotating seat fixedly connected to the top of the slide 214. The third rotating seat cooperates with the third rotating ball, and the groove body of the annular limit groove is slidably connected to the slide 214. The upper surface and the lower surface of the slide 214 are rotatably connected with a plurality of rollers. The rollers are used to reduce the friction between the slide 214 and the deflection plate 213, so that the slide 214 can slide in the annular limit groove. The counterweight block 218 can be used to give one end of the cross bar 217 a biasing force to facilitate the rotation of the cross bar 217. When the deflection plate 213 tilts, the second spring 216 will be compressed or stretched. The elastic force of the second spring 216 can restore the fourth telescopic member 215 to its initial state, thereby rotating the cross bar 217, and then causing the slide 214 to slide in the annular limit groove. The lowering height of multiple pressure blocks 28 can be measured by cooperating with the rotation angle of the protractor 220 and the telescopic height of the fourth telescopic member 215.

[0025] In this embodiment, Figures 2 to 5 As shown, the adjustment mechanism 3 includes a rotating ring 31 rotatably connected to the outer wall of the ring 224, an L-shaped rod 32 is fixedly connected on both sides of the rotating ring 31, an L-shaped plate 33 is fixedly connected to the bottom of the L-shaped rod 32, and a second pointer 35 is fixedly connected on both sides of the bottom of the L-shaped plate 33, and the second pointer 35 cooperates with the scale plate 4.

[0026] The top of the L-shaped plate 33 is connected to the fifth telescopic member 34, which is connected to the C-shaped frame 1. It should be noted that the ring 224 drives the rotating ring 31 to rise and fall, thereby causing the L-shaped rod 32, the L-shaped plate 33 and the second pointer 35 to rise and fall, thereby measuring the thickness of the corrugated cardboard.

[0027] In this embodiment, Figures 3 and 4 As shown, the reset mechanism 5 includes an inclined ring 53 fixedly connected to the top of the protractor disc 220. It should be noted that the upper surface of the inclined ring 53 is provided with an inclined surface.

[0028] A vertical rod 51 is fixedly connected to the lower surface of the top of the C-shaped frame 1. A roller 52 is rotatably connected to the bottom end of the vertical rod 51. The roller 52 cooperates with a tilting ring 53. It should be noted that when the tilting ring 53 rises with the angle disc 220, the tilting ring 53 squeezes the roller 52, causing the tilting ring 53 to rotate, thereby resetting the angle disc 220.

[0029] In this embodiment, Figures 1 to 9 As shown, a method for using a thickness detection device for corrugated paper packaging box production includes the following steps: S1: First, place the corrugated cardboard in the cardboard placement slot, and make the outer wall of the corrugated cardboard fit with the inner wall of the cardboard placement slot; S2: The lifting plate 22 is lowered by the cylinder 21, thereby lowering the thickness measuring assembly, the flatness measuring assembly and the adjustment mechanism 3, and then the pressure block 28 contacts the corrugated cardboard. When the pressure block 28 squeezes the cardboard, the lifting column 27 and the translation block 25 are used in conjunction to deflect the T-bar 210. The T-bar 210 drives the support 211 to deflect, thereby extending and deflecting the third telescopic member 212, and then tilting the deflection plate 213. At this time, the second spring 216 will rotate according to the deflection plate 213. 13, the fourth telescopic member 215 can be compressed or stretched in the inclined direction, and the elastic force of the second spring 216 can cause the fourth telescopic member 215 to expand and contract. At the same time, the counterweight block 218 can cause a biasing force on one end of the cross bar 217, thereby rotating the cross bar 217, and then causing the slide plate 214 to slide in the annular limit groove, so that the slide plate 214 is always located at the highest point of the deflection plate 213. The expansion and contraction of the fourth telescopic member 215 can cause the second pointer 35 to rise and fall, thereby adjusting the measured value of the corrugated cardboard thickness and measuring the flatness of the cardboard; S3, when resetting, the lifting plate 22 is raised by the cylinder 21, thereby raising the thickness measuring assembly, the flatness measuring assembly and the adjustment mechanism 3. When the tilting ring 53 contacts and squeezes the roller 52, the tilting ring 53 can be rotated, thereby resetting the protractor 220.

[0030] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A thickness detection device for corrugated paper packaging box production, comprising a C-shaped frame (1), wherein the lower surface of the top of the C-shaped frame (1) is connected to a reset mechanism (5), and the upper surface of the bottom of the C-shaped frame (1) is connected to a scale plate (4); Its characteristics are: The lower surface of the top of the C-shaped frame (1) is connected to a measuring mechanism (2) and an adjusting mechanism (3), wherein the measuring mechanism (2) is used to measure the thickness and flatness of the corrugated cardboard, and the adjusting mechanism (3) is used to adjust the thickness measurement value according to the flatness of the corrugated cardboard.

2. The thickness detection device for corrugated paper packaging box production according to claim 1, characterized in that: The measuring mechanism (2) comprises a cylinder (21) connected to both sides of the lower surface of the top of the C-shaped frame (1); a driving end of the cylinder (21) is connected to a lifting plate (22); the bottom of the lifting plate (22) is connected to a thickness measuring assembly; the top of the thickness measuring assembly is connected to a flatness measuring assembly; and the flatness measuring assembly is connected to the C-shaped frame (1).

3. The thickness detection device for corrugated paper packaging box production according to claim 2, characterized in that: The thickness measuring assembly comprises a first telescopic member (23) slidably connected to both sides of the bottom of the lifting plate (22), and the top of the first telescopic member (23) is connected to a translation block (25); The center of the lifting plate (22) is connected to a T-shaped rod (210) via a first ball rotation pair, and both sides of the bottom of the T-shaped rod (210) are rotatably connected to moving blocks (29), and the moving blocks (29) are slidably connected to the translation blocks (25); A plurality of top corners of the bottom of the lifting plate (22) are connected to lifting components, and the lifting components cooperate with the translation block (25).

4. The thickness detection device for corrugated paper packaging box production according to claim 3, characterized in that: The flatness measuring assembly comprises a sixth telescopic member (221) connected to the lower surface of the top of the C-shaped frame (1), a first pointer (222) being connected to one side of the bottom of the sixth telescopic member (221), a fixed rod (219) being connected to the bottom of the sixth telescopic member (221), a deflection plate (213) being connected to the bottom of the fixed rod (219) via a second ball rotation pair, a synchronization assembly being connected to the bottom of the deflection plate (213) at the center of the bottom, and the synchronization assembly being connected to the first ball rotation pair; The bottom of the fixed rod (219) is rotatably connected to a rotating telescopic assembly, and the rotating telescopic assembly is slidably connected to the deflection plate (213); The top of the fixed rod (219) is rotatably connected to a protractor disc (220), the protractor disc (220) cooperates with a first pointer (222), and the bottom of the protractor disc (220) is connected to a telescopic ring on the outside, and the telescopic ring is connected to the rotating telescopic assembly.

5. The thickness detection device for corrugated paper packaging box production according to claim 4, characterized in that: The rotary telescopic assembly includes a cross bar (217) rotatably connected to the bottom of the fixed rod (219), one end of the cross bar (217) is connected to a counterweight (218), the other end of the cross bar (217) is connected to the bottom of a fourth telescopic member (215), the fourth telescopic member (215) is sleeved with a second spring (216), the bottom of the fourth telescopic member (215) is fixedly connected to a synchronization plate (225), the synchronization plate (225) is connected to the telescopic ring, the bottom of the synchronization plate (225) is connected to a slide plate (214) via a third ball rotation pair, and the slide plate (214) is slidably connected to the deflection plate (213).

6. The thickness detection device for corrugated paper packaging box production according to claim 4, characterized in that: The adjustment mechanism (3) comprises a rotating ring (31) rotatably connected to the outer wall of the collar (224), the rotating ring (31) having two sides fixedly connected to an L-shaped rod (32), the bottom of the L-shaped rod (32) being fixedly connected to an L-shaped plate (33), the bottom of the L-shaped plate (33) being fixedly connected to a second pointer (35), the second pointer (35) being matched with the scale plate (4); The top of the L-shaped plate (33) is connected to a fifth telescopic member (34), and the fifth telescopic member (34) is connected to the C-shaped frame (1).

7. The thickness detection device for corrugated paper packaging box production according to claim 6, characterized in that: The reset mechanism (5) comprises a tilting ring (53) connected to the top of the protractor disc (220); The lower surface of the top of the C-shaped frame (1) is connected to a vertical rod (51), and the bottom end of the vertical rod (51) is rotatably connected to a roller (52), and the roller (52) cooperates with the tilting ring (53).

8. A method for using a thickness detection device for producing corrugated paper packaging boxes, using the thickness detection device for producing corrugated paper packaging boxes according to any one of claims 1 to 7, characterized in that: The steps include: S1: First, place the corrugated cardboard on the C-shaped frame (1); S2: The lifting plate (22) is lowered by the cylinder (21), thereby lowering the thickness measuring component and the flatness measuring component. When the thickness measuring component contacts the corrugated cardboard, the approximate thickness of the cardboard can be measured. Then, the thickness measuring component and the flatness measuring component are further lowered until the extrusion force reaches a set threshold value, and then the extrusion is stopped. During the extrusion process, the flatness measuring component measures the flatness of the cardboard by squeezing the cardboard, and can also measure the tilt angle. S3: The thickness data is adjusted according to the flatness of the cardboard by the adjusting mechanism (3), thereby measuring the average thickness of the cardboard, and then the measured data is recorded by the staff.

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