CN114354348A

CN114354348A - Full-automatic paperboard crease stiffness testing device

Info

Publication number: CN114354348A
Application number: CN202111569665.0A
Authority: CN
Inventors: 王可; 竺炜; 苏洪波
Original assignee: Zhejiang Minong Century Group Co ltd
Current assignee: Zhejiang Minong Century Group Co ltd
Priority date: 2021-12-21
Filing date: 2021-12-21
Publication date: 2022-04-15

Abstract

The invention belongs to the technical field of paperboard crease stiffness testing, and discloses a full-automatic paperboard crease stiffness testing device which comprises a paper cutter, a grabbing mechanism and a crease stiffness tester, wherein the bottom surface of the full-automatic paperboard crease stiffness testing device is provided with a workbench, the paper cutter is fixed on one side of the workbench, the grabbing mechanism is fixed in the middle of the workbench, the crease stiffness tester is arranged on the other side of the workbench, and a longitudinal crease sample and a transverse crease sample are simultaneously cut by the paper cutter and then are transmitted to the crease stiffness tester through the grabbing mechanism for testing. The paper cutter is used for sampling, the mechanical arm is used for simultaneously grabbing longitudinal and transverse samples and transmitting the longitudinal and transverse samples to the crease stiffness tester for testing and calculating, the stiffness test results and the stiffness ratio of the longitudinal crease samples and the transverse crease samples are displayed, and the alarm is given to the test results exceeding the standard values. The device of the invention replaces manual sampling and calculation, and improves the testing efficiency and the accuracy of the testing result.

Description

Full-automatic paperboard crease stiffness testing device

Technical Field

The invention belongs to the technical field of paperboard crease stiffness tests, and particularly relates to a full-automatic paperboard crease stiffness testing device.

Background

Crease stiffness is the resistance to a certain degree of folding of a cardboard in the direction of a crease under certain conditions, usually expressed in milli-newtons (mN). Whether it is a manual or mechanical folding, the crease stiffness is very important in the opening and closing process of the carton. Too high crease stiffness can produce the skew to the folding line position in carton shaping production line or carton design and the position that finally embodies, and indentation resilience can cause the carton opening force to increase or the distortion of shaping carton, bounce open to reduce production quality and production efficiency. The transverse crease stiffness represents the indentation crease stiffness perpendicular to the paper fiber direction, the longitudinal crease stiffness represents the indentation crease stiffness parallel to the paper fiber direction, and the ratio of the transverse crease stiffness to the longitudinal crease stiffness is too large or too small, so that paper jam or paper forming distortion can be caused, and the automatic packaging and feeding of the paper box is not facilitated. The ratio of the transverse stiffness to the longitudinal stiffness of the paperboard can be used for judging whether the quality of the paperboard meets the requirements or not, and the ratio of the transverse stiffness to the longitudinal stiffness of the paperboard can also be used as a reference for adjusting the parameters of the die cutting tool required by paperboard processing. In the process of paper box packaging production, paper needs to be sampled and detected continuously, so that the machine can be adjusted in real time, and the crease stiffness ratio of the produced paper box can meet the quality standard.

The existing crease stiffness measuring method is that the longitudinal crease and the transverse crease of paper are respectively cut manually, the measuring size of a measuring sample is adjusted, then the longitudinal sample and the transverse sample are sequentially placed into a crease stiffness tester for measurement respectively, the results are compared manually after the measurement, and the samples with the results not meeting the requirements are recorded. The process of cutting, testing and comparing by manpower is not only heavy in workload, but also time-consuming and labor-consuming and easy to make mistakes.

Disclosure of Invention

The invention aims to provide a full-automatic paperboard crease stiffness testing device, which solves the technical problems that the existing crease stiffness measurement needs manual cutting and testing, the workload is large, time and labor are wasted, and errors are easy to occur.

In order to solve the technical problems, the specific technical scheme of the full-automatic paperboard crease stiffness testing device provided by the invention is as follows:

the utility model provides a full-automatic cardboard crease deflection testing arrangement, includes that the paper cuts the ware, snatchs mechanism and crease deflection apparatus, full-automatic cardboard crease deflection testing arrangement bottom surface has the workstation, the paper cuts the ware and fixes the one side at the workstation, it fixes in the middle of the workstation to snatch the mechanism, the opposite side at the workstation is installed to the crease deflection apparatus, the paper cuts the ware and will indulge the crease sample and the horizontal crease sample simultaneously and cut off the back and transmit the test to on the crease deflection apparatus through snatching the mechanism.

Further, the paper cutter passes through the stand to be fixed in one side of workstation, the stand upper end has the cutting bed, have vertical cutting groove and crosscut cutting groove in the middle of the cutting bed, the cutting bed top has the cutting board, the cylinder is connected to cutting board top, the position that the cutting board lower surface corresponds vertical cutting groove and crosscut cutting groove has square plug-in strip respectively, thereby the cutting board is carried out the up-and-down motion by cylinder control and is cut the paper on the bisection cutting bed.

Further, a starting key is fixedly arranged on one side of the paper cutter on the workbench, a paper cutting controller is arranged on the paper cutter, the starting key is electrically connected with the paper cutting controller, and when the starting key is pressed, the paper cutting controller controls the cylinder to start working.

Furthermore, a material receiving box is respectively arranged below the cutting table and corresponding to the longitudinal cutting groove and the transverse cutting groove, the shell of the material receiving box is a square shell, the upper surface of the material receiving box is open, the plane area of the material receiving box is larger than the area of the cut paper sample, an oblique wave-shaped step is arranged in the material receiving box, the step is gradually lifted from the end part of the box bottom to the middle of the box bottom, and the transverse width of the step is smaller than the width of the paper sample.

Furthermore, the cutting table is provided with paper positioning strips, the paper positioning strips are upwards convex blocking strips on the upper surface of the cutting table, and the paper positioning strips are arranged transversely and longitudinally up and down, left and right.

Furthermore, snatch the mechanism and constitute by left manipulator and right manipulator, left side manipulator and right manipulator are fixed on both sides about the workstation is middle, and left manipulator is used for snatching the vertical crease sample of left side material receiving box, and right manipulator is used for snatching the horizontal crease sample of right material receiving box.

Furthermore, infrared sensors are arranged on the left mechanical hand and the right mechanical hand, the left mechanical hand and the right mechanical hand are respectively electrically connected with the grabbing controller, and the grabbing controller grabs the sample after detecting signals of the infrared sensors.

Further, the crease stiffness determinator has a shell, a control system is arranged in the shell, a display screen is arranged on the shell, a base extending outwards is arranged at the bottom of the shell, clamping parts arranged in bilateral symmetry are arranged on the base, two force measuring plates extending out of the shell are arranged below the front display screen of the shell, stiffness tests are carried out on longitudinal crease samples and transverse crease samples between the clamping parts and the force measuring plates on the left side and the right side respectively, a test result and an aspect ratio calculation result are displayed on the display screen, an alarm unit is arranged in the control system, and when the measurement result exceeds a standard value, the control system sends out buzzing alarm sound.

Furthermore, the clamping part is provided with a body, one side of the body is provided with an opening, the clamping plate is arranged in parallel with the opening surface, the clamping plate is connected with the body through a spring, a top column is arranged on the body and on the opening side, facing the clamping plate, and is connected with the body shaft, and the top column is electrically connected with a controller in the control system.

Furthermore, the bottom of the clamping part body is provided with a rotating shaft, the clamping part is connected with the base through the rotating shaft, the rotating shaft is electrically connected with a controller in a control system, and the controller in the control system controls the rotating shaft to rotate.

The full-automatic paperboard crease stiffness testing device disclosed by the invention has the following advantages: the paper box longitudinal crease sample and the transverse crease sample are simultaneously sampled by the paper cutter, and the longitudinal crease sample and the transverse crease sample are simultaneously grabbed by the left manipulator and the right manipulator and are transmitted to the crease stiffness tester for testing. The device provided by the invention replaces manual sampling and calculation, so that the test efficiency and the test result accuracy are improved, and the production efficiency is improved.

Drawings

FIG. 1 is a schematic diagram showing the position of a longitudinally folded sample and a transversely folded sample of a carton in an unfolded state;

FIG. 2 is a schematic structural view of a full-automatic paperboard crease stiffness testing device of the present invention;

FIG. 3 is a schematic view of the cutting table of the present invention;

FIG. 4 is a schematic structural view of the material receiving box of the present invention;

FIG. 5 is a schematic view of the gripping mechanism of the present invention;

FIG. 6 is a schematic view of the construction of the crease stiffness tester of the present invention;

FIG. 7 is a side view of a holding member of the crease stiffness tester of the present invention;

FIG. 8 is a schematic view showing a state in which a holding member of the crease stiffness measuring instrument of the present invention is held;

FIG. 9 is a schematic view showing a state of measurement of the crease stiffness tester of the present invention;

the notation in the figure is: 1. a sheet cutter; 2. a grabbing mechanism; 3. a crease stiffness tester; 4. a workbench, 5 and a material receiving box; 6. a collection box; 11. a column; 12. cutting table; 13. a sliding shaft; 14. a fixed block; 15. cutting the board; 16. a pneumatic shaft; 17. a cylinder; 18. a paper cutting controller; 19. a start key; 121. longitudinally cutting a groove; 122. transversely cutting the groove; 123. a paper positioning strip; 151. a square knife switch; 51. a step; 22. a left manipulator; 22. a right manipulator; 23. a capture controller; 24. an infrared sensor; 221. a fixed seat; 222. a rotating arm; 223. a first cylinder; 224. a first arm; 225. a second arm; 226. a second cylinder; 227. a gripper; 228. a third cylinder; 31. a housing; 32. a display screen; 33. a base; 34. a clamping member; 35. a force measuring plate; 341. a body; 342. an opening; 343. a clamping plate; 344. a top pillar; 345. a spring; 346. a rotating shaft.

Detailed Description

In order to better understand the purpose, structure and function of the present invention, a fully automatic paperboard crease stiffness testing device of the present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1, it is a developed sample diagram of a certain packaging paper box, and the vertical and horizontal stiffness ratio, i.e. the ratio of the vertical crease to the horizontal crease on the paper box, needs to collect the vertical crease sample and the horizontal crease sample on the same paper box during the test process to calculate the ratio.

As shown in fig. 2, the full-automatic device for testing the crease stiffness of the paperboard of the present invention comprises a paper cutter 1, a grabbing mechanism 2 and a crease stiffness tester 3. The paper cutter 1 cuts the longitudinal crease sample and the transverse crease sample at the same time, and then the longitudinal crease sample and the transverse crease sample are transmitted to a crease stiffness tester 3 through a grabbing mechanism 2 for testing.

Specifically, full-automatic cardboard crease deflection testing arrangement bottom surface has workstation 4, paper cutter 1 passes through stand 11 to be fixed in one side of workstation 4, stand 11 upper end has cutting bed 12, the vertical fixation has sliding shaft 13 on the cutting bed 12, sliding shaft 13 can set up more than 2 or two, sliding shaft 13 upper end fixedly connected with fixed block 14, cutting board 15 has the through-hole that supplies sliding shaft 13 to pass, cutting board 15 can be at the up-and-down motion between fixed block 14 and cutting bed 12. The middle of the cutting plate 15 is fixedly connected with a pneumatic shaft 16, an air cylinder 17 is arranged on the fixed block 14, a paper cutting controller 18 is fixed on the fixed block 14 on one side of the air cylinder 17, a starting key 19 is fixedly arranged on one side of the paper cutting device 1 on the workbench 4, and the starting key 19 is electrically connected with the paper cutting controller 18. When the start key 19 is pressed, the paper cutting controller 18 controls the air cylinder 17 to start operating. The cylinder 17 can drive the pneumatic shaft 16 to move up and down so as to drive the cutting plate 15 to move up and down. As shown in fig. 3, the cutting table 12 has a longitudinal cutting groove 121 and a transverse cutting groove 122 in the middle, and the longitudinal cutting groove 121 and the transverse cutting groove 122 are square through-hole grooves whose sizes are customized according to the size required for measurement by the crease stiffness tester 3. The positions of the longitudinal cutting grooves 121 and the transverse cutting grooves 122 are determined according to a template of the test paper, the longitudinal cutting grooves 121 correspond to longitudinal folds of the paper, and the transverse cutting grooves 122 correspond to transverse folds of the paper. And the positions below the cutting table 12 corresponding to the longitudinal cutting groove 121 and the transverse cutting groove 122 are respectively provided with a material receiving box 5, and the material receiving box 5 is used for containing the cut paper samples. The cutting table 12 is further provided with a paper positioning strip 123, and the paper positioning strip 123 is a blocking strip protruding upwards on the upper surface of the cutting table 12, and is provided with an upper transverse, a lower transverse, a left transverse and a right longitudinal arrangement for accurately positioning paper.

As shown in fig. 2, the lower surface of the cutting plate 15 is provided with square gates 151 at positions corresponding to the longitudinal cutting grooves 121 and the transverse cutting grooves 122, respectively, when the cutting plate 15 moves downward, the square gates 151 cut the paper samples placed on the cutting table 12, and the cut samples fall into the material receiving box 5 through the longitudinal cutting grooves 121 and the transverse cutting grooves 122, respectively.

In order to conveniently and effectively clamp a sample by the grabbing mechanism 2, the structure of the material receiving box 5 is designed, as shown in fig. 5, the shell of the material receiving box 5 is a square shell, the upper surface of the shell is open, the plane area of the shell is larger than the area of a cut paper sample, so that the paper sample can completely fall into the material receiving box, the inside of the material receiving box 5 is provided with a step 51 in an oblique waveform shape, the step 51 is gradually raised from the end part of the box bottom to the middle of the box bottom, the transverse width of the step 51 is smaller than the width of the paper sample, when the paper sample falls into the material receiving box 5, one part of the step can be exposed out of the step, so that the grabbing mechanism 2 can grab the paper sample smoothly.

As shown in fig. 2, the grasping mechanism 2 is composed of a left manipulator 21 and a right manipulator 22, the left manipulator 21 and the right manipulator 22 are fixed at the left and right sides of the middle of the workbench 4, the left manipulator 21 is used for grasping the longitudinal fold sample of the left material receiving box 5, and the right manipulator 22 is used for grasping the transverse fold sample of the right material receiving box 5. The left manipulator 21 and the right manipulator 22 have the same structure, and the structure of the right manipulator 22 is described below by taking the right manipulator 22 as an example, as shown in fig. 5, a fixed seat 221 is provided at the bottom of the right manipulator 22, the fixed seat 221 is fixed on the worktable 4, a rotating arm 222 is provided above the fixed seat 221, and the rotating arm 222 can rotate around the central axis of the fixed seat 221. The upper end of the rotating arm 222 is provided with a first arm 224, one end of the first arm 224 is connected with the top end shaft of the rotating arm 222, a first air cylinder 223 is fixedly arranged on the side wall of the rotating arm 222, and the telescopic shaft of the first air cylinder 223 is connected with the position shaft of the first arm 224 close to the connecting shaft of the rotating arm 222. The first cylinder 223 drives the telescopic shaft to extend and retract so as to enable the first arm 224 to move up and down. The other end of the first arm 224 has a second arm 225, and one end of the second arm 225 is connected to the other end shaft of the first arm 224. A second air cylinder 226 is fixedly connected to the side wall of the first arm 224, and the telescopic shaft of the second air cylinder 226 is connected with a position shaft of the second arm 225 close to the connecting shaft of the first arm 224. The second cylinder 226 drives the telescopic shaft to extend and retract, so that the second arm 225 moves left and right. A hand grip 227 is fixed to the other end of the second arm 225, and a third cylinder 228 is provided between the second arm 225 and the hand grip 227. The third cylinder 228 drives the telescopic shaft to extend and retract so as to open or close the hand grip. The grip 227 has an infrared sensor 24 near the magazine 5, the infrared sensor 24 is electrically connected to the grip controller 23, and the infrared sensor 24 is used for identifying the sample in the magazine 5. The rotating arm 222, the first cylinder 223, the second cylinder 226 and the third cylinder 228 are all electrically connected with the grabbing controller 23, and the grabbing controller 23 reads signals of the infrared sensor 24 and controls the rotating arm 222, the first cylinder 223, the second cylinder 226 and the third cylinder 228 to move according to the programmed instructions, so that the sample in the material receiving box 5 is grabbed.

The grabbing mechanism 2 simultaneously grabs the longitudinal crease sample of the left material receiving box 5 and the transverse crease sample of the right material receiving box 5 and then transmits the samples to the crease stiffness tester 3 for testing. The crease stiffness tester 3 is installed on the other side of the workbench 4, as shown in fig. 6, the crease stiffness tester 3 has a housing 31, a control system is provided inside the housing 31, a display screen 32 is provided on the housing 31, a base 33 extending outward is provided at the bottom of the housing 31, clamping members 34 symmetrically arranged on the base 33, as shown in fig. 7, the clamping members 34 have a body 341, an opening 342 is provided at one side of the body 341, the opening 342 is used for placing a sample, a clamping plate 343 is arranged in parallel with the opening surface, the clamping plate 343 is connected with the body 341 through a spring 345, and the clamping plate 343 is used for clamping the sample. The body 341 has a top column 344 at the opening side facing the clamping plate 343, the top column 344 is connected with the body 341 by a shaft, and the top column 344 is electrically connected with a controller in the control system. Under normal conditions, the posts 344 are held against the plate 343 and the spring 345 is compressed; as shown in fig. 8, when a sample is placed in the opening 342, the top column 344 is pushed open by the sample, and the clamping plate 343 clamps the sample under the action of the spring 345. When the test is completed and the sample is removed, the controller in the control system returns the top column 344, and the top column 344 is pushed against the clamping plate 343 again to wait for the next test.

As shown in fig. 6, two force measuring plates 35 are provided under the front display screen 32 of the housing 31 and extend from the inside of the housing 31, as shown in fig. 7, the bottom of the body 341 of the holding member 34 has a rotating shaft 346, and the holding member 34 is connected to the base 33 through the rotating shaft 346. The rotating shaft 346 is electrically connected to a controller in the control system. As shown in fig. 9, when a sample is placed in the clamping member 34, after a controller in the control system detects a signal that the top pillar 344 is pushed open, the rotating shaft 346 is controlled to rotate 90 degrees, so that the opening 342 of the clamping member 34 faces the force measuring plate 35, at this time, the sample is bent 90 degrees along with the fold, the bent surface is pushed against the force measuring plate 35, the force measuring plate 35 measures the stiffness of the fold, and the measurement result is displayed on the display screen 32. The display screen 32 has 3 display windows for displaying the data measured by the left and right force measuring plates 35 and the automatically calculated aspect ratio. The control system is internally provided with an alarm unit, and when the measurement result exceeds a standard value, the control system sends out a buzzing alarm sound. After the test is completed, the control system controls the rotating shaft 346 to rotate back to the original position, and the gripping mechanism 2 takes the sample away. As shown in fig. 1, the crease stiffness tester 3 has collecting boxes 6 on both sides for placing the longitudinally and transversely folded samples after the test. The grasping mechanism 2 takes the samples away and then puts the longitudinal crease samples and the transverse crease samples into the corresponding collecting boxes 6 respectively.

When the device is used for testing samples, a worker firstly puts packaging paper into a cutting table 12 of a paper cutter 1, longitudinal creases and transverse creases can be accurately aligned with longitudinal cutting grooves 121 and transverse cutting grooves 122 under the positioning of a paper positioning strip 123, a start key 19 on a workbench 4 is pressed, a paper cutting controller 18 controls a cylinder 17 to move to drive a cutting plate 15 to cut the paper downwards, the cut longitudinal crease samples and the cut transverse crease samples respectively fall into a material receiving box 5 under the cutting table 12, after the infrared sensors 24 on a left manipulator 21 and a right manipulator 22 detect the samples, the left manipulator 21 and the right manipulator 22 grab the samples in the material receiving box 5, the samples are sent into a clamping part 34 on a crease stiffness tester 3 and then the samples are loosened to jack the jack column 344, a control system in the crease stiffness tester 3 detects a signal that the jack column 344 is jacked open, so as to control a rotating shaft 346 to rotate by 90 degrees, make the opening 342 of clamping part 34 measure board 35 in the face of the dynamics, the sample is along with the crease is buckled 90 degrees this moment, and the one side top after buckling is on board 35 is measured to the dynamics, and board 35 is measured the dynamics to the stiffness of crease, waits for several seconds after, and display screen 32 shows about respectively that board 35 is measured to both sides dynamics measures the data that obtain and the aspect ratio of stiffness of automatic calculation. And when the measurement result exceeds the standard value, the control system sends out a buzzing alarm sound. After the test is completed, the control system controls the rotating shaft 346 to rotate back to the original position, the gripping mechanism 2 takes the samples away and puts the longitudinal crease samples and the transverse crease samples into the corresponding collecting boxes 6 respectively.

It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes in the features and embodiments, or equivalent substitutions may be made therein by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. The utility model provides a full-automatic cardboard crease stiffness testing arrangement, includes paper cutter (1), snatchs mechanism (2) and crease stiffness apparatus (3), its characterized in that, full-automatic cardboard crease stiffness testing arrangement bottom surface has workstation (4), one side at workstation (4) is fixed in paper cutter (1), it fixes in the middle of workstation (4) to snatch mechanism (2), the opposite side at workstation (4) is installed in crease stiffness apparatus (3), paper cutter (1) will indulge crease sample and cross crease sample simultaneously and cut off the back and transmit the test to on crease stiffness apparatus (3) through snatching mechanism (2).

2. The full-automatic paperboard crease stiffness testing device according to claim 1, characterized in that the paper cutter (1) is fixed on one side of the workbench (4) through an upright post (11), a cutting table (12) is arranged at the upper end of the upright post (11), a longitudinal cutting groove (121) and a transverse cutting groove (122) are arranged in the middle of the cutting table (12), a cutting plate (15) is arranged above the cutting table (12), a cylinder (17) is connected above the cutting plate (15), square gates (151) are respectively arranged at positions of the lower surface of the cutting plate (15) corresponding to the longitudinal cutting groove (121) and the transverse cutting groove (122), and the cutting plate (15) is controlled by the cylinder (17) to move up and down so as to cut the paper on the cutting table (12).

3. The full-automatic paperboard crease stiffness testing device according to claim 2, characterized in that a start key (19) is fixedly arranged on one side of the paper cutter (1) on the workbench (4), a paper cutting controller (18) is arranged on the paper cutter (1), the start key (19) is electrically connected with the paper cutting controller (18), and when the start key (19) is pressed, the paper cutting controller (18) controls the cylinder (17) to start working.

4. The full-automatic paperboard crease stiffness testing device according to claim 2, characterized in that a material receiving box (5) is respectively arranged below the cutting table (12) at positions corresponding to the longitudinal cutting groove (121) and the transverse cutting groove (122), the shell of the material receiving box (5) is a square shell, the upper surface of the material receiving box is open, the plane area of the material receiving box is larger than the area of the cut paper sample, an oblique wave-shaped step (51) is arranged inside the material receiving box (5), the step (51) is gradually raised from the end part of the box bottom to the middle of the box bottom, and the transverse width of the step (51) is smaller than the width of the paper sample.

5. The full-automatic paperboard crease stiffness testing device of claim 2, wherein the cutting table (12) is provided with a paper positioning strip (123), and the paper positioning strip (123) is a baffle strip protruding upwards from the upper surface of the cutting table (12) and is arranged vertically, horizontally and longitudinally.

6. The full-automatic paperboard crease stiffness testing device according to claim 1, characterized in that the grabbing mechanism (2) comprises a left manipulator (21) and a right manipulator (22), the left manipulator (21) and the right manipulator (22) are fixed on the left side and the right side of the middle of the workbench (4), the left manipulator (21) is used for grabbing a longitudinal crease sample of the left material receiving box (5), and the right manipulator (22) is used for grabbing a transverse crease sample of the right material receiving box (5).

7. The full-automatic paperboard crease stiffness testing device according to claim 6, wherein the left manipulator (21) and the right manipulator (22) are provided with infrared sensors (24), the left manipulator (21) and the right manipulator (22) are respectively electrically connected with a grabbing controller (23), and the grabbing controller (23) grabs a sample after detecting signals of the infrared sensors (24).

8. The fully automatic paperboard crease stiffness testing device according to claim 1, characterized in that the crease stiffness tester (3) has a housing (31), a control system is arranged inside the housing (31), a display screen (32) is arranged on the housing (31), a base (33) extending outwards is arranged at the bottom of the housing (31), clamping components (34) symmetrically arranged left and right are arranged on the base (33), two force measuring plates (35) extending out from the housing (31) are arranged below the front display screen (32) of the housing (31), a longitudinal crease sample and a transverse crease sample are respectively subjected to stiffness testing between the clamping components (34) and the force measuring plates (35) at the left and right sides, a testing result and an aspect ratio calculation result are displayed on the display screen (32), and an alarm unit is arranged in the control system, and when the measurement result exceeds the standard value, the control system sends out a buzzing alarm sound.

9. The fully automatic paperboard crease stiffness testing device of claim 8, wherein the clamping member (34) is provided with a body (341), an opening (342) is formed in one side of the body (341), the clamping plate (343) is arranged in parallel with the opening surface, the clamping plate (343) is connected with the body (341) through a spring (345), a top column (344) is arranged on the body (341) and faces the clamping plate (343) and faces the opening surface, the top column (344) is connected with a shaft of the body (341), and the top column (344) is electrically connected with a controller in a control system.

10. The fully automatic paperboard crease stiffness testing device of claim 9, wherein the bottom of the body (341) of the clamping member (34) is provided with a rotating shaft (346), the clamping member (34) is connected with the base (33) through the rotating shaft (346), the rotating shaft (346) is electrically connected with a controller in a control system, and the controller in the control system controls the rotating shaft (346) to rotate.