Degradable environment-friendly corrugated board bonding strength detection device

Abstract

The invention relates to the technical field of corrugated board bonding strength detection, in particular to a degradable environment-friendly corrugated board bonding strength detection device which comprises a rectangular detection table, material placing mechanisms are mounted on the rectangular detection table in a diagonal mode, corrugated boards are placed on the material placing mechanisms, and a reversing mechanism is arranged on the rectangular detection table. According to the corrugated board detection device, a corrugated board can be driven to turn over to the other side through the positive and negative rotation motor, the other side of the corrugated board is detected by simulating the use scene that one side of the corrugated board is damaged, the diversity of detection work is improved, the detection efficiency is improved, and the detection efficiency is improved. The contact area with the clamping part is increased through the detection steel sheet with the two platy ends, it is guaranteed that the corrugated boards are stressed more uniformly in the detection process, meanwhile, the preparation work of the two corrugated boards can be met, the time for disassembling and assembling the corrugated boards is shortened, the continuity of the later adhesion degree detection work is guaranteed, and the detection efficiency is improved. And then the efficiency of the corrugated board adhesion degree detection work is improved.

Description

Technical Field

[0001] The invention relates to the technical field of corrugated paperboard bonding strength detection, in particular to a degradable and environmentally friendly corrugated paperboard bonding strength detection device. Background Art

[0002] Corrugated cardboard is a widely used packaging material. It is made of at least one layer of wavy core paper and two or more smooth surface paper tightly bonded by adhesive. With the increasing global environmental awareness, degradable and environmentally friendly corrugated cardboard is gradually becoming the mainstream choice. This new type of corrugated cardboard not only inherits the advantages of traditional products such as strength, cushioning performance and cost-effectiveness, but also pays more attention to ecological sustainability.

[0003] In order to ensure the stability and reliability of this environmentally friendly corrugated cardboard in practical applications, strict quality control is essential. One of the key indicators is the bonding strength, which directly affects the product's protection during transportation. At present, the testing method for the bonding strength of corrugated cardboard mainly includes: selecting samples of specific sizes, inserting test needles of different lengths into them, and placing them in a pressure testing machine. Then, a certain force and speed are applied to the shorter test needles until the sample is torn. By comparing and analyzing the experimental results with the preset standards, it is determined whether the batch of corrugated cardboard meets the quality requirements.

[0004] However, although the existing technology has been widely used, there are still some shortcomings. The traditional manual inspection method is often limited to single-sided operation, while corrugated cardboard has many usage scenarios. Since corrugated cardboard is made of multiple layers bonded together, the tearing and damage on one side of the corrugated cardboard does not affect the protection of the items inside the corrugated cardboard on the other side. Therefore, the existing single-sided inspection method is too one-sided and lacks representativeness for simulating the actual use of corrugated cardboard. At the same time, when manually inserting steel needles and inspecting corrugated cardboard, usually only a single corrugated cardboard is placed for inspection. When multiple corrugated cardboards are involved in the inspection, the corrugated cardboards often need to be repeatedly disassembled and assembled, so the inspection efficiency needs to be improved. Summary of the invention

[0005] In view of the above problems, the embodiment of the present application provides a degradable and environmentally friendly corrugated cardboard bonding strength detection device to solve the problems existing in the bonding strength detection of corrugated cardboard.

[0006] To achieve the above object, the embodiments of the present application provide the following technical solutions: A degradable and environmentally friendly corrugated cardboard bonding strength detection device, including a rectangular detection table. The front and rear side walls of the rectangular detection table are installed with a material placing mechanism for placing corrugated cardboard in a diagonal manner. A rectangular groove is opened downward on the upper end surface of the rectangular detection table, and a reverse rotation mechanism for driving the corrugated cardboard to reverse is installed in the rectangular groove.

[0007] Auxiliary parts are arranged diagonally on the left and right side walls of the rectangular detection table, and a first driving part for driving the auxiliary parts to work is jointly arranged below the two auxiliary parts.

[0008] The reverse rotation mechanism includes an adjusting gear rotatably arranged on the rear side wall of an annular shell. An adjusting part is arranged inside the annular shell. A frustum is fixedly arranged on the front side wall of the adjusting gear. Both the frustum and the end surface of the annular shell are provided with strip-shaped chutes in the vertical direction. Clamping parts are installed in both strip-shaped chutes. Corrugated cardboard is placed in both clamping parts. The two corrugated cardboard are placed diagonally in the rectangular groove. An auxiliary gear one that is always meshed with the adjusting gear is also rotatably arranged in the rectangular groove through a rotating roller. The rear end of the rotating shaft rotatably penetrates the rectangular detection table and is fixedly connected to a forward and reverse motor.

[0009] A U-shaped mounting frame with an opening downward is fixedly arranged on the rectangular detection table, and a detection mechanism for detecting the corrugated cardboard is installed on the U-shaped mounting frame.

[0010] The detection mechanism includes a mounting plate fixedly arranged at the center position of the horizontal section of the U-shaped mounting frame. A second driving part is arranged on the mounting plate, and detection parts for detecting the bonding degree of the corrugated cardboard are arranged on both the front and rear sides of the second driving part.

[0011] Preferably, the clamping part includes a pressing plate slidably arranged in the strip-shaped chute through two telescopic rods. Two telescopic clamping blocks distributed in the front-rear direction are fixedly arranged on the lower end surface of the pressing plate. The telescopic clamping blocks are provided with two left and right telescopic sections, and chamfers are arranged at the ends of the two telescopic sections. An electromagnet is arranged on the lower end surface of the pressing plate and between the two telescopic clamping blocks. An auxiliary plate is arranged below the pressing plate and fixedly arranged inside the strip-shaped chute. Rectangular through grooves corresponding to the positions of the two telescopic clamping blocks are opened on the upper end surface of the auxiliary plate. Square grooves that are matched with the telescopic clamping blocks and have chamfers at the corners are opened on the left and right side walls of the rectangular through groove. A top block that is matched with the detection part is also slidably arranged in the rectangular through groove through a spring. A matching group for matching with the detection steel sheet is also arranged on the side wall of the auxiliary plate. The matching group includes a bearing plate fixedly arranged on the side wall of the auxiliary plate and having a chute opened on the side wall. A matching block with a T-shaped limiting groove opened on the side wall is slidably arranged in the chute through a spring. The side of the matching block close to the material placing table is provided with a chamfer.

[0012] Preferably, the second driving part includes a first motor fixedly arranged inside the mounting plate and whose output shaft rotates upward through the mounting plate. The outer wall of the output shaft of the first motor is fixedly provided with a driving gear, and T-shaped racks that are always meshed with the driving gear are arranged diagonally on the front and rear sides of the driving gear.

[0013] Preferably, the detecting part includes slide rails fixedly arranged on the side wall of the mounting plate in a front-back symmetric manner. A sliding block fixedly connected to the corresponding T-shaped rack is slidably arranged inside the slide rail. A multi-stage telescopic push rod I is fixedly connected downward inside the sliding block. A C-shaped pressing frame with a downward opening is fixedly connected to the first-stage telescopic section of the telescopic push rod I. Pressing blocks I are fixedly arranged on the two vertical sections of the C-shaped pressing frame in a front-back symmetric direction. The second-stage telescopic section of the telescopic push rod I penetrates through the C-shaped pressing frame and a detecting group is arranged on the second-stage telescopic section.

[0014] Preferably, the detecting group includes rectangular plates slidably arranged on the inner side walls of the two vertical sections of the C-shaped pressing frame. Installation chutes extending in the front-back direction are symmetrically arranged on the lower end surface of the rectangular plate in a left-right symmetric manner. Pressing blocks II are respectively slidably arranged inside the two installation chutes. The left and right pressing blocks II are fixedly connected through a spring telescopic block. The detecting group further includes a bidirectional push rod fixedly arranged inside the rectangular plate. Thrust plates slidably penetrating through the installation chutes are fixedly arranged on the two telescopic sections of the bidirectional push rod. The thrust plates are attached to the side walls of the pressing blocks II.

[0015] Preferably, four support columns are fixedly arranged on the lower end surface of the rectangular detection table in a matrix manner. Avoidance groove groups are diagonally arranged on the upper end surface of the rectangular detection table. The avoidance groove groups include a strip-shaped groove I for avoiding corrugated cardboard and having chamfers at the corners, and a strip-shaped groove II corresponding to the auxiliary part and for avoiding the auxiliary part. Blocking plates are fixedly arranged on the inner side walls of the rectangular groove in a left-right symmetric manner. A bearing platform is also fixedly arranged at the center position of the rectangular groove and between the two blocking plates. The annular shell is rotatably arranged on the bearing platform.

[0016] Preferably, the auxiliary part includes a material guiding inclined plate fixedly arranged on the rectangular detection table and having an installation through groove on the side wall. A C-shaped abutting frame with an opening facing the bearing platform is fixedly connected inside the installation through groove through a telescopic plate. A connecting frame penetrating through the material guiding inclined plate is fixedly arranged along the front-back direction at the end of the C-shaped abutting frame away from the bearing platform. The connecting frame slides downward through the rectangular detection table. The connecting frame is divided into several L-shaped support sections and a strip-shaped connecting section connecting the several support sections into a whole. The several support sections are fixed to the C-shaped abutting frame. Two cooperation grooves distributed in the front-back direction are arranged on the upper end surface of the strip-shaped connecting section.

[0017] Preferably, the loading mechanism comprises a loading table for placing corrugated cardboard, the upper end surface of the loading table is fixedly provided with four blocks in a matrix manner, the left and right side walls of the loading table are respectively fixedly provided with support plates with sliding grooves on the end surfaces, a plurality of loading blocks with through grooves on the end surfaces are respectively slidably provided in the sliding grooves of the two support plates, a longer detection steel sheet and a shorter detection steel sheet are respectively placed in the interiors of the plurality of through grooves on both sides, the ends of the longer detection steel sheets placed on different loading tables that are away from each other are set as telescopic sections, the ends of the shorter detection steel sheets that are away from each other are respectively fixedly provided with T-shaped blocks, and the height of the loading block for placing the longer detection steel sheet is slightly higher than the height of the loading block for placing the shorter detection steel sheet.

[0018] Preferably, the driving part 1 includes a gear 1 rotatably arranged on the lower end surface of a rectangular detection platform, and a rack 1 which is always meshed with the gear 1 is slidably arranged on the lower end surface of the rectangular detection platform in a front-to-back symmetrical manner, and two strip blocks with sliding grooves on the end surfaces are fixedly arranged in the vertical direction on the two sides away from each other, and a sliding block fixed to the connecting frame is slidably arranged inside the sliding groove, and the gear 1 is fixedly connected to the output shaft of the external motor.

[0019] Preferably, the adjusting part includes an auxiliary gear 2 which is fixedly arranged on the rear side wall of the adjusting gear and located inside the annular shell. The inner wall of the annular shell is fixedly provided with a plurality of teeth along the circumferential direction. The teeth and the auxiliary gear 2 are meshed with three auxiliary gears 3 which are rotatably connected to the rear side wall of the adjusting gear.

[0020] Compared with the prior art, the embodiments of the present invention provide the following beneficial effects:

[0021] 1. The clamping part provided in the present invention can realize the limit work of the detection steel sheet. After the detection work on one side of the corrugated cardboard is completed, the corrugated cardboard can be turned to the other side by the forward and reverse motor, and the detection part can be controlled to realize the detection work on the second side of the corrugated cardboard. By simulating the use environment of the corrugated cardboard in various situations, that is, the use scenario of damage on one side and the bonding strength on the other side, the integrity of the detection work is improved, and the accuracy of the corrugated cardboard detection work is also guaranteed.

[0022] 2. The present invention is provided with two material placing tables in a diagonal manner, and detection steel sheets are placed on the two material placing tables. The plate-shaped detection steel sheets at both ends increase the contact area with the clamping part and the detection part, thereby ensuring that the corrugated cardboard is subjected to more uniform force during the detection process. At the same time, the present invention can meet the preparation work for the two corrugated cardboards, reduce the time used for disassembly and assembly of the corrugated cardboards, ensure the continuity of the later adhesion detection work, and thereby improve the efficiency of the adhesion detection work of the corrugated cardboards. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1It is a schematic three-dimensional structure diagram of the present invention.

[0024] Figure 2 It is a first-position schematic diagram of a partial structure on the rectangular detection table in the present invention.

[0025] Figure 3 It is Figure 2 The partial enlarged view at position A in

[0026] Figure 4 It is a second-position schematic diagram of a partial structure on the rectangular detection table in the invention.

[0027] Figure 5 It is a schematic three-dimensional structure diagram of the material placement mechanism in the present invention.

[0028] Figure 6 It is a schematic diagram of the positional relationship between the material placement mechanism and the rectangular detection table in the present invention.

[0029] Figure 7 It is a schematic diagram of the positional relationship between the inversion mechanism, the corrugated cardboard and the rectangular detection table in the present invention.

[0030] Figure 8 It is Figure 7 The partial enlarged view at position C in

[0031] Fig. 9 It is a partial mechanism cross-sectional view of the clamping part in the present invention.

[0032] Fig.10 It is Fig. 9 The partial enlarged view at position B in

[0033] Fig.11 It is a cross-sectional view of a partial mechanism in the adjustment part of the present invention.

[0034] Fig.12 It is a first-position schematic diagram of the detection mechanism in the present invention.

[0035] Fig.13 It is a half cross-sectional view of the C-shaped mounting bracket in the present invention.

[0036] Fig.14 It is a second-position schematic diagram of the detection mechanism in the present invention.

[0037] Fig.15 It is a cross-sectional view of the rectangular plate in the present invention.

[0038] Reference numerals in the drawings: 1, rectangular detection table; 11, rectangular groove; 12, auxiliary part; 121, material guiding inclined plate; 122, U-shaped abutting frame; 123, connecting frame; 1231, fitting groove; 13, first driving part; 131, first gear; 132, first rack; 133, strip-shaped block; 14, support column; 15, first strip-shaped groove; 16, second strip-shaped groove; 17, blocking plate; 2, material placing mechanism; 21, material placing table; 22, stop block; 23, support plate; 231, sliding groove; 24, material placing block; 25, detection steel sheet; 3, reverse mechanism; 31, adjusting gear; 311, annular housing; 312, frustum; 32, adjusting part; 321, second auxiliary gear; 322, tooth; 323, third auxiliary gear; 33, clamping part; 331, pressing plate; 3311, telescopic rod; 332, telescopic clamping block; 333, auxiliary plate; 3331, rectangular through groove; 334, top block; 335, fitting group; 3351, L-shaped bearing plate; 3352, fitting block; 33521, T-shaped limiting groove; 34, first auxiliary gear; 35, forward and reverse motor; 4, U-shaped mounting frame; 5, detection mechanism; 51, mounting plate; 52, second driving part; 521, first motor; 522, driving gear; 523, T-shaped rack; 53, detection part; 531, slide rail; 532, sliding block; 533, first telescopic push rod; 535, U-shaped pressing frame; 536, first pressing block; 537, detection group; 5371, rectangular plate; 5372, mounting sliding groove; 5373, second pressing block; 5374, spring sliding block; 5375, two-way push rod; 5376, pushing plate; 6, corrugated cardboard. Detailed implementation manners

[0039] The following further elaborates on this application Figure 1-15 in conjunction with the attached drawings.

[0040] Please refer to Figure 1 and Figure 2 , a degradable and environmentally friendly corrugated cardboard bonding strength detection device, including a rectangular detection table 1. The front and rear side walls of the rectangular detection table 1 are installed with a material placing mechanism 2 for placing corrugated cardboard 6 in a diagonal manner. A rectangular groove 11 is opened downward on the upper end surface of the rectangular detection table 1, and a reverse mechanism 3 for driving the corrugated cardboard 6 to reverse is installed in the rectangular groove 11.

[0041] Please refer to Figure 1 and Figure 2 , auxiliary parts 12 are arranged diagonally on the left and right side walls of the rectangular detection table 1, and a first driving part 13 for driving the auxiliary parts 12 to work is jointly arranged below the two auxiliary parts 12.

[0042] Please refer to Figure 6 , Fig. 9 , Fig.10 and Fig.11, the reverse mechanism 3 includes an adjusting gear 31 rotatably arranged on the rear side wall of an annular housing 311. An adjusting part 32 is arranged inside the annular housing 311. A frustum 312 is fixedly arranged on the front side wall of the adjusting gear 31. Strip-shaped sliding grooves are opened in the vertical direction on the end face of the frustum 312 and the annular housing 311. A clamping part 33 is installed in each of the two strip-shaped sliding grooves. Corrugated paperboards 6 are placed in each of the two clamping parts 33. The two corrugated paperboards 6 are placed diagonally in a rectangular groove 11. An auxiliary gear one 34 that is always meshed with the adjusting gear 31 is rotatably arranged in the rectangular groove 11 through a rotating roller. The rear end of the rotating shaft rotatably penetrates through the rectangular detection table 1 and is fixedly connected to a forward and reverse motor 35.

[0043] Please refer to Figure 1 , a U-shaped mounting frame 4 with an opening facing downward is fixedly arranged on the rectangular detection table 1. A detection mechanism 5 for detecting the corrugated paperboard 6 is installed on the U-shaped mounting frame 4.

[0044] Please refer to Figure 1 and Fig.12 , the detection mechanism 5 includes a mounting plate 51 fixedly arranged at the central position of the horizontal section of the U-shaped mounting frame 4. A driving part two 52 is arranged on the mounting plate 51. Detection parts 53 for detecting the adhesion degree of the corrugated paperboard 6 are arranged on both the front and rear sides of the driving part two 52.

[0045] Please refer to Figure 1 and Figure 5 , the material placing mechanism 2 includes a material placing table 21 for placing the corrugated paperboard 6. Four stoppers 22 are fixedly arranged on the upper end face of the material placing table 21 in a matrix manner. Support plates 23 with sliding grooves 231 opened on their end faces are respectively fixedly arranged on the left and right side walls of the material placing table 21. A plurality of material placing blocks 24 with through grooves opened on their end faces are respectively slidably arranged in the sliding grooves 231 of the two support plates 23. Longer detection steel sheets 25 and shorter detection steel sheets 25 are respectively placed in some of the through grooves on both sides. The far ends of the longer detection steel sheets 25 placed on different material placing tables 21 are set as telescopic sections. T-shaped blocks are respectively fixedly arranged at the far ends of the shorter detection steel sheets 25. And the height of the material placing blocks 24 for placing the longer detection steel sheets 25 is slightly higher than the height of the material placing blocks 24 for placing the shorter detection steel sheets 25.

[0046] During specific operation, first, the corrugated paperboard 6 is cut into a detection size manually. Then, the cut corrugated paperboard 6 is placed on the front and rear two material placing mechanisms 2. According to different detection methods, different numbers and different lengths of detection steel sheets 25 are inserted into the gaps of the corresponding corrugated paperboards 6 in sequence. After the detection steel sheets 25 are inserted, the corrugated paperboard 6 is pushed manually to the clamping part 33 at the corresponding position and the clamping part 33 completes the limiting work on the corrugated paperboard 6.

[0047] After the corrugated cardboard 6 is limited, the detection part 53 is controlled to move downward at a uniform speed, so that the detection part 53 presses down on the shorter detection steel sheet 25 until the side of the corrugated cardboard 6 that contacts the shorter detection steel sheet 25 is torn. According to the downward pressing force and the pressing time of the detection part 53, it is judged whether the bonding strength of this side of the corrugated cardboard 6 meets the requirements.

[0048] When the adhesion strength test of one side of the corrugated cardboard 6 is completed, the forward and reverse motors 35 are started to drive the auxiliary gear 34 to rotate. When the auxiliary gear 34 rotates, the meshing adjustment gear 31 rotates. At this time, the clamping portion 33 located in front of the adjustment gear 31 and the corrugated cardboard 6 are turned over by the adjustment gear 31. At the same time, the clamping portion 33 and the corrugated cardboard 6 on the rear side of the adjustment gear 31 rotate in the opposite direction to the front clamping portion 33 under the action of the adjustment portion 32. After the turning is completed, the detection portion 53 is continuously controlled to move downward at a uniform speed, so that the detection portion 53 presses down on the longer detection steel sheet 25 until the side of the corrugated cardboard 6 is also torn. The adhesion strength of the corrugated cardboard 6 under certain special working environments can be judged according to the downward pressing force and the downward pressing time of the detection portion 53.

[0049] Please refer to Figure 1 , Figure 2 The lower end surface of the rectangular detection platform 1 is fixedly provided with four support columns 14 in a matrix manner, and the upper end surface of the rectangular detection platform 1 is provided with an avoidance groove group in a diagonal manner, and the avoidance groove group includes a strip groove 15 for avoiding the corrugated cardboard 6 and having chamfers at the corners, and a strip groove 2 16 opened corresponding to the auxiliary part 12 and used for avoiding the auxiliary part 12. The inner side wall of the rectangular groove 11 is fixedly provided with a blocking plate 17 in a left-right symmetrical manner, and a support platform is also fixedly provided at the center position of the rectangular groove 11 and between the two blocking plates 17, and the annular shell 311 is rotatably provided on the support platform.

[0050] Please refer to Figure 7 , Figure 8 , Fig. 9 and Fig.10The clamping portion 33 includes a pressure plate 331 slidably arranged inside the strip-shaped slide groove through two telescopic rods 3311, and two telescopic blocks 332 distributed in the front-to-back direction are fixedly arranged on the lower end surface of the pressure plate 331. The telescopic blocks 332 are provided with two left and right telescopic sections, and the ends of the two telescopic sections are provided with chamfers. An electromagnet is provided on the lower end surface of the pressure plate 331 and located between the two telescopic blocks 332. An auxiliary plate 333 is provided below the pressure plate 331 and fixedly arranged inside the strip-shaped slide groove, and a rectangular through groove 3331 is provided on the upper end surface of the auxiliary plate 333 at the position corresponding to the two telescopic blocks 332. The left and right side walls of the rectangular through slot 3331 are provided with square slots that cooperate with the telescopic block 332. The interior of the rectangular through slot 3331 is also provided with a top block 334 that cooperates with the detection part 53 through a spring sliding. The side wall of the auxiliary plate 333 is also provided with a matching group 335 that cooperates with the detection steel sheet 25. The matching group 335 includes a supporting plate 3351 that is fixedly arranged on the side wall of the auxiliary plate 333 and has a sliding groove on the side wall. The interior of the sliding groove is provided with a matching block 3352 with a T-shaped limit groove 33521 on the side wall through a spring sliding. The side of the matching block 3352 close to the material placement table 21 is set to be chamfered.

[0051] During the specific operation, the corrugated cardboard 6 is first cut into the required size for detection by manual labor, and then the cut corrugated cardboard 6 is placed between the four stoppers 22 of the front and rear material placement tables 21, and then the material placement blocks 24 on the two material placement tables 21 for placing the longer detection steel sheets 25 and the shorter steel sheets 25 are pushed respectively, and then the longer and shorter detection steel sheets 25 are inserted into the holes on the side wall of the corrugated cardboard in turn according to the detection method.

[0052] After the detection steel sheets 25 of the corrugated cardboards 6 on the two loading tables 21 are inserted, the corrugated cardboards 6 on both sides are pushed and slid along their respective loading tables 21 and the strip grooves 15. As the corrugated cardboards 6 move, the two ends of the longer detection steel sheet 25 are respectively attached to the auxiliary plate 333 and the upper surface of the rectangular detection table 1, and the shorter detection steel sheet 25 slides into the T-shaped limit groove 33521 through the T-block set at one end thereof, and then the limiting work of the shorter detection steel sheet 25 close to one end of the auxiliary plate 333 is completed, and the corrugated cardboard 6 is continued to be pushed to move and the top end of the corrugated cardboard 6 is in conflict with the blocking plate 17, and the discharge work of the corrugated cardboard 6 is completed.

[0053] It should be noted that both ends of the detection steel sheet 25 are configured to be plate-shaped in order to increase the contact area and facilitate the later cooperation with the clamping part 33 to achieve the clamping work of the longer detection steel sheet 25 .

[0054] Please refer to Fig.12 and Fig.13, the detection unit 53 includes slide rails 531 fixedly arranged on the side wall of the mounting plate 51 in a front-back symmetric manner. A sliding block 532 is slidably arranged inside the slide rail 531. A multi-stage telescopic push rod 533 is fixedly connected downward inside the sliding block 532. A U-shaped pressing frame 535 with a downward opening is fixedly connected to the first-stage telescopic section of the telescopic push rod 533. Pressing blocks 536 are fixedly arranged on the two vertical sections of the U-shaped pressing frame 535 in a front-back symmetric direction. The second-stage telescopic section of the telescopic push rod 533 penetrates through the U-shaped pressing frame 535 and a detection group 537 is arranged on the second-stage telescopic section.

[0055] Please refer to Fig.14 and Fig.15 , the detection group 537 includes rectangular plates 5371 slidably arranged on the inner side walls of the two vertical sections of the U-shaped pressing frame 535. Installation chutes 5372 extending in the front-back direction are symmetrically arranged on the lower end surface of the rectangular plate 5371 in a left-right symmetric manner. Pressing blocks 5373 are respectively slidably arranged inside the two installation chutes 5372. The left and right pressing blocks 5373 are fixedly connected by a spring telescopic block 5374. The detection group 537 further includes a bidirectional push rod 5375 fixedly arranged inside the rectangular plate 5371. Thrust plates 5376 that slide through the installation chutes 5372 are fixedly arranged on the two telescopic sections of the bidirectional push rod 5375. The thrust plates 5376 are in contact with the side walls of the pressing blocks 5373.

[0056] When the corrugated cardboard 6 abuts against the blocking plate 17 and is located directly below the U-shaped pressing frame 535, first control the first-stage telescopic section of the telescopic push rod 533 to extend. At this time, the U-shaped pressing frame 535 gradually moves downward driven by the first-stage telescopic section and presses down the pressing plate 331 through the pressing block 5373 arranged on the U-shaped pressing frame 535. When the pressing plate 331 moves downward to the rectangular through slot 3331, the two telescopic clamping blocks 332 arranged at its lower end cooperate with the rectangular through slot 3331 to retract and respectively push the top blocks 334 inside their respective rectangular through slots 3331. As the telescopic clamping blocks 332 are pressed down to the square groove position on the rectangular through slot 3331, the telescopic sections on both sides of the telescopic clamping blocks 332 reset and pop out and are clamped into the corresponding square grooves. At this time, the first-stage telescopic section of the telescopic push rod 533 is fully extended. At the same time, when the telescopic clamping blocks 332 are clamped into the square grooves, the lower end surface of the pressing plate 331 is also in close contact with the upper end surfaces of several longer detection steel sheets 25. Finally, turn on the power supply of the electromagnet on the pressing plate 331 to magnetically fix the pressing plate 331 and several longer detection steel sheets 25.

[0057] When the longer detection steel sheet 25 and the shorter detection steel sheet 25 have completed the limiting, according to the spacing between the shorter detection steel sheets 25 of the same corrugated cardboard 6, the pressure block 2 5373 inside the installation slide groove 5372 is adjusted by manual sliding, so that the position of the pressure block 2 5373 corresponds to the position of the shorter detection steel sheet 25. When the position adjustment of the pressure block 2 5373 is completed, the two-way push rod 5375 is controlled to drive the push plate 5376 to extend, and the push plate 5376 synchronously pushes the pressure block 2 5373 on both sides, so that it is tightened inside the installation slide groove 5372, thereby completing the limiting work of the pressure block 2 5373.

[0058] When the position of the second pressure block 5373 and the position of the shorter detection steel sheet 25 are on the same vertical line, the secondary telescopic section of the telescopic push rod 1 533 is continued to be controlled to drive the rectangular plate 5371 to extend. When the rectangular plate 5371 moves downward, it presses downward against the corresponding shorter detection steel sheet 25 through the second pressure block 5373. Through the uniform extension of the telescopic push rod 1 533, several shorter detection steel sheets 25 will tear the corrugated cardboard 6 on the corresponding side.

[0059] Finally, the telescopic push rod 1 533 is controlled to reset, and according to the extended length of the secondary telescopic section of the telescopic push rod 1 533 and the pressing time of the second pressure block 5373 and the shorter detection steel sheet 25, it is judged whether the bonding strength of the single side of the corrugated cardboard 6 meets the detection requirements, that is, if the extended length of the secondary telescopic section of the telescopic push rod 1 533 is longer than the planned length, and the pressing time of the second pressure block 5373 is longer than the planned pressing time, then the bonding strength of the corrugated cardboard 6 meets the detection requirements; on the contrary, if the extended length of the secondary telescopic section of the telescopic push rod 1 533 is less than the planned length, and the pressing time of the second pressure block 5373 is less than the planned pressing time, then the bonding strength of the corrugated cardboard 6 does not meet the detection requirements.

[0060] It should be noted that one end of the shorter detection steel sheet 25 slides in the T-shaped limit groove 33521 through the T-block arranged thereon, and when the pressure block 2 5373 is pressed down, the shorter detection steel sheet 25 will drive the matching block 3352 to move down synchronously along the supporting plate 3351, and when the detection is completed, the telescopic push rod 2 drives the pressure block 2 5373 away from the shorter detection steel sheet 25, and the matching block 3352 will be reset with the rebound force of the spring, and the first-stage telescopic section and the second-stage telescopic section of the multi-stage telescopic push rod 1 533 are asynchronously extended, that is, the second-stage telescopic section starts to work and gradually extends when the first-stage telescopic section is fully extended.

[0061] Please refer to Fig.11, the adjusting part 32 includes an auxiliary gear two 321 fixedly arranged on the rear side wall of the adjusting gear 31 and located inside the annular housing 311. A plurality of teeth 322 are fixedly arranged on the inner side wall of the annular housing 311 along the circumferential direction. Three auxiliary gears three 323 rotatably connected to the rear side wall of the adjusting gear 31 are meshed between the teeth 322 and the auxiliary gear two 321.

[0062] Please refer to Figure 2 and Figure 4 , the first driving part 13 includes a gear one 131 rotatably arranged on the lower end face of the rectangular detection table 1. Two racks one 132 that are always meshed with the gear one 131 are slidably arranged on the lower end face of the rectangular detection table 1 in a front-back symmetric manner. On the far sides of the two racks one 132, strip-shaped blocks 133 with chutes opened on the end faces are respectively fixedly arranged along the vertical direction. A sliding block fixed to the connecting frame 123 is slidably arranged inside the chute. The gear one 131 is fixedly connected to the output shaft of an external motor.

[0063] Please refer to Figure 2 and Figure 3 , the auxiliary part 12 includes a feeding inclined plate 121 fixedly arranged on the rectangular detection table 1 and having an installation through groove opened on the side wall. An inverted U-shaped pressing frame 122 with an opening facing the bearing platform is fixedly connected inside the installation through groove through a telescopic plate. A connecting frame 123 penetrating the feeding inclined plate 121 along the front-back direction is fixedly arranged at the end of the inverted U-shaped pressing frame 122 far from the bearing platform. The connecting frame 123 slides downward through the rectangular detection table 1. The connecting frame 123 is divided into several L-shaped support sections and a strip-shaped connecting section connecting the several support sections into a whole. The several support sections are fixed to the inverted U-shaped pressing frame 122. Two cooperation grooves 1231 distributed along the front-back direction are opened on the upper end face of the strip-shaped connecting section.

[0064] Please refer to Fig.12 and Fig.13 , the second driving part 52 includes a first motor 521 fixedly arranged inside the mounting plate 51 and having an output shaft rotatably penetrating the mounting plate 51 upward. A driving gear 522 is fixedly arranged on the outer wall of the output shaft of the first motor 521. T-shaped racks 523 that are always meshed with the driving gear 522 are arranged diagonally on the front and rear sides of the driving gear 522. The sliding block 532 is fixedly connected to the corresponding T-shaped rack 523.

[0065] After the corrugated paperboard 6 finishes the single-sided adhesion strength test, start the forward and reverse motor 35 to drive the auxiliary gear one 34 to mesh with the adjusting gear 31 and rotate. When the adjusting gear 31 rotates, the corrugated paperboard 6 on its front side is driven by the auxiliary plate 333 and the pressing plate 331 to turn left. The corrugated paperboard 6 on the rear side of the adjusting gear 31 makes the corrugated paperboard 6 on the rear side of the adjusting gear 31 turn right through the principle of planetary gears.

[0066] When the two corrugated papers 6 are reversed relative to each other, the telescopic sections of the longer detection steel sheets 25 on the respective corrugated papers 6 will first come into contact with the material guiding inclined plate 121 and gradually retract along the inclined surface of the material guiding inclined plate 121. When the flipping operation of the corrugated paper 6 is completed, the telescopic sections of the longer detection steel sheets 25 will snap into the interior of the U-shaped abutting frame 122. Immediately afterwards, an external motor drives the first gear 131 to work. When the first gear 131 rotates, it meshes with the first racks 132 on both sides respectively. The strip-shaped blocks 133 provided on the two first racks 132 and the sliding blocks drive the corresponding connecting frames 123 and the U-shaped abutting frames 122 to approach each other, and the abutting and limiting work of the longer detection steel sheets 25 is realized through the movement of the U-shaped abutting frames 122.

[0067] At the same time, control the first motor 521 to drive the driving gear 522 to rotate. The driving gear 522 meshes with the T-shaped racks 523 on both sides respectively, and the two T-shaped racks 523 drive the sliding blocks 532 to slide along the slide rails 531 to the positions directly above the corresponding corrugated papers 6 respectively. Then, the first-stage telescopic section of the telescopic push rod 533 drives the U-shaped pressing frame 535 to move downward, and the pressing block 536 presses against the top block 334. As the downward pressure of the top block 334 gradually increases, the two telescopic sections of the telescopic latch 332 will disengage from the square grooves, and the pressing block 536 on the other side of the U-shaped pressing frame 535 will move into the fitting groove 1231. Continue to control the telescopic section of the telescopic push rod 533 to extend. The pressing block 536 on the U-shaped pressing frame 535 presses against the connecting frame 123 and the top block 334 respectively. The top block 334 pushes the pressing plate 331. Furthermore, the longer detection steel sheet 25 between the connecting frame 123 and the pressing plate 331 gradually tears the corrugated paper 6 as the downward pressure increases and the downward pressing time lengthens.

[0068] After the detection work is completed on this detection surface, control the telescopic push rod 533 to reset. According to the length of the first-stage telescopic section of the telescopic push rod 533 extending and the downward pressing time of the pressing block 536 on the connecting frame 123 and the pressing plate 331, it is judged whether the bonding strength of the other side meets the detection requirements when the corrugated paper 6 is torn and damaged on one side. That is, if the length of the first-stage telescopic section of the telescopic push rod 533 extends longer than the planned length, and at the same time the downward pressing time of the pressing block 536 is longer than the planned downward pressing time, it indicates that the bonding strength of the other side of the corrugated paper 6 meets the detection requirements when one side is damaged. On the contrary, if the length of the first-stage telescopic section of the telescopic push rod 533 is less than the planned length, and at the same time the downward pressing time of the pressing block 536 is less than the planned downward pressing time, it indicates that the bonding strength of the other side of the corrugated paper 6 does not meet the detection requirements when one side is damaged.

[0069] Working process: S1: First, the corrugated board 6 is cut into a suitable size by manual labor, and then the two cut corrugated boards 6 are respectively placed between the four stoppers 22 on the material placing table 21.

[0070] S2: According to the detection method, manually push the material placing blocks 24 and the detection steel sheets 25 on the four support plates 23 to the left and right side walls of the corresponding corrugated board 6 respectively, then insert the detection steel sheets 25 with different lengths into the corresponding corrugated board 6 in sequence, and then push the corrugated board 6 with the detection steel sheet 25 inserted into the rectangular detection table 1.

[0071] S3: During the pushing process of the corrugated board 6, the shorter detection steel sheet 25 is limited by the T-shaped block sliding into the T-shaped limit groove 33521, and the lower end of the longer detection steel sheet 25 is placed on the upper surface of the auxiliary plate 333. Then, control the first-stage telescopic section of the telescopic push rod 533 to drive the C-shaped pressing frame 535 to extend, and press down the pressure plate 331 through the first pressing block 536 so that the telescopic clamping block 332 is clamped into the corresponding square groove. At the same time, turn on the power supply of the electromagnet on the lower end surface of the pressure plate 331 to magnetically fix the longer detection steel sheet 25 and the pressure plate 331, and the limiting work of the longer detection steel sheet 25 can be completed.

[0072] S4: Manually adjust the position of the second pressing block 5373 in the same rectangular plate 5371 according to the position of the shorter detection steel sheet 25, and then push the pushing plate 5376 through the bidirectional push rod 5375 to complete the pressing and limiting work of the second pressing block 5373. Control the second-stage telescopic section of the telescopic push rod 533 to drive the rectangular plate 5371 to move downward, so that the second pressing block 5373 continuously presses the shorter detection steel sheet 25 at a constant speed.

[0073] S5: When the surface of the corrugated board 6 in contact with the shorter detection steel sheet 25 is torn, control the telescopic push rod 533 to reset, and judge whether the bonding strength of one side of the corrugated board 6 meets the detection requirements according to the extended length of the second-stage telescopic section of the telescopic push rod 533 and the pressing time of the second pressing block 5373 on the shorter detection steel sheet 25. That is, if the extended length of the second-stage telescopic section of the telescopic push rod 533 is longer than the planned length, and at the same time the pressing time of the second pressing block 5373 is longer than the planned pressing time, then the bonding strength of the corrugated board 6 meets the detection requirements. On the contrary, if the extended length of the second-stage telescopic section of the telescopic push rod 533 is less than the planned length, and at the same time the pressing time of the second pressing block 5373 is less than the planned pressing time, then the bonding strength of the corrugated board 6 does not meet the detection requirements.

[0074] S6: For the corrugated board 6 with qualified single-sided adhesion strength, the adhesion strength of the other side can also be detected. Start the forward and reverse motor 35 to drive the auxiliary gear 1 to rotate. The front corrugated board 6 rotates to the left driven by the adjusting gear 31, and the rear corrugated board 6 rotates to the right through the planetary gear principle. During the rotation process, the longer detection steel sheet 25 is clamped into the U-shaped abutment 122 through the cooperation with the material guiding inclined plate 121. The limiting abutment work of the longer detection steel sheet 25 is completed by the mutual approach of the two connecting frames 123 and the U-shaped abutment 122. Subsequently, the first-stage telescopic section of the telescopic push rod 1 533 drives the pressing block 1 536 on the U-shaped pressing frame 535 to press down the connecting frame 123 and the top block 334 at a uniform speed.

[0075] S7: Until the surface of the corrugated board 6 in contact with the longer detection steel sheet 25 is torn, control the telescopic push rod 1 533 to reset, and judge the adhesion strength of the other side of the corrugated board 6 according to the length of the first-stage telescopic section of the telescopic push rod 1 533 and the pressing time of the pressing block 1 536 on the longer detection steel sheet 25. That is, if the length of the first-stage telescopic section of the telescopic push rod 1 533 is longer than the planned length, and at the same time the pressing time of the pressing block 1 536 is longer than the planned pressing time, it indicates that the adhesion strength of the other side of the corrugated board 6 meets the detection requirements when one side is damaged. On the contrary, if the length of the first-stage telescopic section of the telescopic push rod 1 533 is less than the planned length, and at the same time the pressing time of the pressing block 1 536 is less than the planned pressing time, it indicates that the adhesion strength of the other side of the corrugated board 6 does not meet the detection requirements when one side is damaged.

[0076] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the embodiments of the present invention. In addition, in the description of the present invention, unless otherwise specified, the meanings of "multiple", "multiple roots", and "multiple groups" are two or more.

[0077] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "connected", "installed", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0078] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for testing the bonding strength of degradable and environmentally friendly corrugated paperboard, comprising a rectangular testing table (1), characterized in that: The front and rear side walls of the rectangular detection table (1) are installed with a material placing mechanism (2) for placing corrugated cardboard (6) in a diagonal manner. A rectangular groove (11) is opened downward on the upper end surface of the rectangular detection table (1), and a reverse mechanism (3) for driving the corrugated cardboard (6) to reverse is installed in the rectangular groove (11). Auxiliary parts (12) are arranged diagonally on the left and right side walls of the rectangular detection table (1), and a first driving part (13) for driving the auxiliary parts (12) to work is arranged below the two auxiliary parts (12). The reverse mechanism (3) includes an adjusting gear (31) rotatably arranged on the rear side wall of an annular housing (311). An adjusting part (32) is arranged inside the annular housing (311). A frustum (312) is fixedly arranged on the front side wall of the adjusting gear (31). Strip-shaped sliding grooves are opened in the vertical direction on the end surface of the frustum (312) and the annular housing (311). Clamping parts (33) are installed in the two strip-shaped sliding grooves. Corrugated cardboard (6) is placed in each of the two clamping parts (33). The two corrugated cardboard (6) are placed diagonally in the rectangular groove (11). An auxiliary gear one (34)(131) that is always meshed with the adjusting gear (31) is rotatably arranged in the rectangular groove (11) through a rotating roller. The rear end of the rotating shaft rotatably penetrates through the rectangular detection table (1) and is fixedly connected to a forward and reverse motor (35). A U-shaped mounting frame (4) with an opening downward is fixedly arranged on the rectangular detection table (1), and a detection mechanism (5) for detecting the corrugated cardboard (6) is installed on the U-shaped mounting frame (4). The detection mechanism (5) includes a mounting plate (51) fixedly arranged at the central position of the horizontal section of the U-shaped mounting frame (4). A second driving part (52) is arranged on the mounting plate (51). Detection parts (53) for detecting the adhesion of the corrugated cardboard (6) are arranged on both the front and rear sides of the second driving part (52).

2. The device for detecting the bonding strength of degradable and environmentally friendly corrugated paperboard according to claim 1, characterized in that: The clamping part (33) includes a pressure plate (331) slidably arranged inside the strip-shaped chute through two telescopic rods (3311). Two telescopic clamping blocks (332) distributed in the front-back direction are fixedly arranged on the lower end surface of the pressure plate (331). The telescopic clamping blocks (332) are provided with two left-right telescopic sections, and chamfers are arranged at the ends of the two telescopic sections. An electromagnet is arranged on the lower end surface of the pressure plate (331) and between the two telescopic clamping blocks (332). An auxiliary plate (333) is arranged below the pressure plate (331) and fixedly arranged inside the strip-shaped chute. Rectangular through grooves (3331) are formed on the upper end surface of the auxiliary plate (333) corresponding to the positions of the two telescopic clamping blocks (332). Square grooves which are matched with the telescopic clamping blocks (332) and have chamfers at the corners are formed on the left and right side walls of the rectangular through grooves (3331). A top block (334) which is matched with the detection part (53) is also slidably arranged inside the rectangular through grooves (3331) through a spring. A matching group (335) which is matched with the detection steel sheet (25) is also arranged on the side wall of the auxiliary plate (333). The matching group (335) includes a bearing plate (3351) fixedly arranged on the side wall of the auxiliary plate (333) and having a chute formed on the side wall. A matching block (3352) with a T-shaped limiting groove (33521) formed on the side wall is slidably arranged inside the chute through a spring. The side of the matching block (3352) close to the material placing table (21) is arranged as a chamfer.

3. The device for detecting the bonding strength of degradable and environmentally friendly corrugated paperboard according to claim 1, characterized in that: The second driving part (52) includes a first motor (521) fixedly arranged inside the mounting plate (51) and whose output shaft rotates upward through the mounting plate (51). A driving gear (522) is fixedly arranged on the outer wall of the output shaft of the first motor (521). T-shaped racks (523) which are always meshed with the driving gear (522) are arranged diagonally on the front and rear sides of the driving gear (522).

4. The device for detecting the bonding strength of degradable and environmentally friendly corrugated paperboard according to claim 3 is characterized in that: The detection part (53) includes slide rails (531) fixedly arranged on the side walls of the mounting plate (51) in a front-back symmetric manner. A sliding block (532) fixedly connected with the corresponding T-shaped rack (523) is slidably arranged inside the slide rails (531). A multi-stage telescopic push rod one (533) is fixedly connected downward inside the sliding block (532). A U-shaped pressing frame (535) with an opening downward is fixedly connected to the first-stage telescopic section of the telescopic push rod one (533). Pressing blocks one (536) are fixedly arranged on the two vertical sections of the U-shaped pressing frame (535) in a front-back symmetric direction. The second-stage telescopic section of the telescopic push rod one (533) penetrates through the U-shaped pressing frame (535) and a detection group (537) is arranged on the second-stage telescopic section.

5. The device for detecting the bonding strength of degradable and environmentally friendly corrugated paperboard according to claim 4, characterized in that: The detection group (537) includes a rectangular plate (5371) slidably arranged on the inner side walls of the two vertical sections of the C-shaped pressing frame (535). The lower end surface of the rectangular plate (5371) is provided with installation sliding grooves (5372) extending in the front-rear direction in a left-right symmetric manner. Two pressing blocks II (5373) are respectively slidably arranged inside the two installation sliding grooves (5372). The left and right pressing blocks II (5373) are fixedly connected through a spring telescopic block (5374). The detection group (537) further includes a bidirectional push rod (5375) fixedly arranged inside the rectangular plate (5371). Thrust plates (5376) slidably penetrating through the installation sliding grooves (5372) are fixedly arranged on the two telescopic sections of the bidirectional push rod (5375). The thrust plates (5376) are attached to the side walls of the pressing blocks II (5373).

6. The device for detecting the bonding strength of degradable and environmentally friendly corrugated paperboard according to claim 1, characterized in that: Four support columns (14) are fixedly arranged on the lower end surface of the rectangular detection table (1) in a matrix manner. Avoidance groove groups are provided on the upper end surface of the rectangular detection table (1) in a diagonal manner. The avoidance groove groups include a strip-shaped groove I (15) for avoiding the corrugated cardboard (6) and having chamfers at the corners, and a strip-shaped groove II (16) corresponding to the auxiliary part (12) and used for avoiding the auxiliary part (12). Blocking plates (17) are fixedly arranged on the inner side walls of the rectangular groove (11) in a left-right symmetric manner. A bearing platform is also fixedly arranged at the central position of the rectangular groove (11) and between the two blocking plates (17). The annular shell (311) is rotatably arranged on the bearing platform.

7. The device for detecting the bonding strength of degradable and environmentally friendly corrugated paperboard according to claim 6, characterized in that: The auxiliary part (12) includes a material guiding inclined plate (121) fixedly arranged on the rectangular detection table (1) and having an installation through groove opened on the side wall. A C-shaped abutting frame (122) with an opening facing the bearing platform is fixedly connected inside the installation through groove through a telescopic plate. A connecting frame (123) penetrating through the material guiding inclined plate (121) is fixedly arranged at one end of the C-shaped abutting frame (122) far from the bearing platform in the front-rear direction. The connecting frame (123) slidably penetrates downward through the rectangular detection table (1). The connecting frame (123) is divided into several L-shaped support sections and a strip-shaped connecting section connecting the several support sections into a whole. The several support sections are fixed to the C-shaped abutting frame (122). Two cooperation grooves (1231) distributed in the front-rear direction are opened on the upper end surface of the strip-shaped connecting section.

8. The device for detecting the bonding strength of degradable and environmentally friendly corrugated paperboard according to claim 1, characterized in that: The material placement mechanism (2) comprises a material placement platform (21) for placing corrugated paperboard (6), the upper end surface of the material placement platform (21) is fixedly provided with four stoppers (22) in a matrix manner, the left and right side walls of the material placement platform (21) are respectively fixedly provided with support plates (23) with sliding grooves (231) on the end surfaces, a plurality of material placement blocks (24) with through grooves on the end surfaces are respectively slidably provided in the sliding grooves (231) of the two support plates (23), a relatively long detection steel sheet (25) and a relatively short detection steel sheet (25) are respectively placed in the relatively long through grooves on both sides, the ends of the relatively long detection steel sheets (25) placed on different material placement platforms (21) that are away from each other are arranged as telescopic sections, the ends of the relatively short detection steel sheets (25) that are away from each other are respectively fixedly provided with T-shaped blocks, and the height of the material placement blocks (24) for placing the relatively long detection steel sheets (25) is slightly higher than the height of the material placement blocks (24) for placing the relatively short detection steel sheets (25).

9. The device for detecting the bonding strength of degradable and environmentally friendly corrugated paperboard according to claim 1, characterized in that: The driving part (13) comprises a gear (131) rotatably arranged on the lower end surface of the rectangular detection platform (1); a rack (132) which is always meshed with the gear (131) is slidably arranged on the lower end surface of the rectangular detection platform (1) in a front-to-back symmetrical manner; a strip block (133) with a sliding groove on the end surface is fixedly arranged in the vertical direction on the two sides of the racks (132) which are separated from each other; a sliding block fixed to the connecting frame (123) is slidably arranged inside the sliding groove; and the gear (131) is fixedly connected to the output shaft of the external motor.

10. The device for detecting the bonding strength of degradable and environmentally friendly corrugated paperboard according to claim 1, characterized in that: The adjusting portion (32) comprises an auxiliary gear 2 (321) fixedly arranged on the rear side wall of the adjusting gear (31) and located inside the annular housing (311); a plurality of teeth (322) are fixedly arranged on the inner side wall of the annular housing (311) along the circumferential direction; three auxiliary gears 3 (323) rotatably connected to the rear side wall of the adjusting gear (31) are meshed between the teeth (322) and the auxiliary gear 2 (321).

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