Breakage strength testing device for corrugated carton

Abstract

The invention discloses a corrugated carton bursting strength testing device, and relates to the technical field of corrugated carton bursting strength test.The corrugated carton bursting strength testing device comprises a detection table and a housing, the housing is fixed to the top of the detection table through bolts, and a telescopic assembly is fixed to the top of the housing through bolts; according to the corrugated paper bursting strength detection device, the rail frame alternately moves on the top of the detection table, corrugated paper boards are placed on the driven roller and the clamping roller to be alternately fed, the situation that operators excessively participate in the corrugated paper bursting strength detection process is avoided, and a sliding block arranged on a threaded rod in a sleeving mode is driven by a motor to move on the rail frame; the rotating sleeve rotates when the side part of the rotating sleeve is in contact with the staggered baffle strip, 180-degree rotation is completed under the rotation of the spring behind the rotating sleeve and the abutting action of the limiting column, the clamping roller rotates to clamp the corrugated paper, and after the corrugated paper is subjected to double-sided bursting strength detection, the clamping roller rotates to drive the corrugated paper to deviate towards one side, so that the corrugated paper can be clamped. And the bursting strength detection of multiple positions and front and back surfaces on the single corrugated paper is realized.

Description

Technical Field

[0001] The invention relates to the technical field of corrugated paper bursting strength testing, in particular to a bursting strength testing device for a corrugated paper box. Background Art

[0002] Bursting strength is the maximum pressure value in the direction perpendicular to the paperboard when the elastic film breaks the circular sample area under the pressure applied by the hydraulic system. It is also an important performance indicator of paperboard, packaging paper and paper bag paper. Bursting strength is related to fiber length and fiber bonding strength. Paper with high fiber length and bonding strength also has high bursting strength.

[0003] The mechanical treatment method and beating degree of pulp directly affect the average length of pulp fibers and the bonding force of fibers. Increasing the beating degree will increase the bursting strength, but excessive beating will reduce the bursting strength. The bursting strength is a comprehensive reflection of many strength properties of paper and paperboard, and it also affects the tensile strength, elongation and tear strength.

[0004] During the bursting strength test, the samples are divided into two groups, one with the front side facing the rubber film and the other with the back side facing the rubber film. When the sample is broken, the test value is read, and the sum of the test values ​​of each sample is divided by the number of samples to obtain the test result. The flipping and transposition of the corrugated paper are manually adjusted throughout the process. If the breaking position on a single piece of paperboard is too close, the hole position will be offset when the elastic film applies pressure, which will affect the accuracy of the acquisition of the entire corrugated paper bursting strength test value;

[0005] Therefore, we propose a bursting strength testing device for corrugated boxes. Summary of the invention

[0006] The purpose of the present invention is to provide a bursting strength test device for corrugated paper boxes to solve the problems raised in the above background technology;

[0007] To achieve the above object, the present invention provides the following technical solution: a bursting strength test device for a corrugated box, comprising a test platform and a cover shell, the top of the test platform is fixed with the cover shell by bolts, the top of the cover shell is fixed with a telescopic assembly by bolts, a placement plate is installed in the cover shell, and the telescopic assembly is fixed to the top of the placement plate;

[0008] An upper chuck is fixed to the bottom of the placement plate by bolts, a pad is installed on the inspection table, a cavity is symmetrically opened in the inspection table, and tooth sleeves are movably connected to the inner walls on both sides of the cavity, both sides of the pad pass through the inspection table and extend into the cavity, the pad is located on the inner and outer walls of the cavity and meshed with the tooth sleeves, a lower chuck is fixed to the top of the pad by bolts, a tooth column is symmetrically fixed to the bottom of the placement plate by spot welding, one end of the tooth column passes through one side of the inspection table and meshed with one side of the tooth sleeve in the cavity, and a control panel is installed on the cover shell side.

[0009] Furthermore, a clamping and pulling assembly is installed on the outer wall of the cover shell, and a steering and lifting assembly is movably connected to the top of the detection platform.

[0010] Furthermore, the steering lifting assembly includes a track frame and a slider, the side wall of the track frame is slidably connected to the slider, the top of the track frame is fixed with a motor by bolts, a threaded rod is fixed on the output end of the motor, and one end of the threaded rod passes through one side of the slider and is movably connected to the bottom of the track frame, and the slider and the threaded rod are threadedly connected.

[0011] Furthermore, the steering lifting assembly also includes a staggered bar and a limit block. The bottom of the track frame is slidably connected with the staggered bar, the top of the staggered bar is fixed with the limit block by spot welding, and the inner wall of one side of the staggered bar is fixed with a toothed plate by bolts.

[0012] Furthermore, a rotating sleeve is movably connected inside the slider, one side of the rotating sleeve passes through the slider and is fixed with a storage plate, the other side of the rotating sleeve passes through the slider and is installed with a spring, one side of the spring is connected to the bottom of the slider, and the outer wall of the slider is symmetrically welded and fixed with a limiting column on the rotating sleeve side.

[0013] Furthermore, one side of the storage plate is symmetrically and movably connected to a driven roller via a bearing, the other side of the storage plate is movably connected to a clamping roller, and the storage plate at the bottom of the clamping roller is movably connected to a driven roller.

[0014] Furthermore, one side of the clamping roller penetrates the storage plate and is fixed with a transmission tooth, and the rotating sleeve is symmetrically fixed with a protruding block on the slider side, and the protruding block is correspondingly arranged with the upper limit block of the offset gear bar.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] In the present invention, a track frame is used to alternately move on the top of the testing table, and corrugated paperboards are placed on the driven roller and the clamping roller for alternate loading, while avoiding excessive participation of operators in the corrugated paper bursting strength test. The slider sleeved on the threaded rod is driven by a motor to move on the track frame, and rotates when the side of the rotating sleeve contacts the misaligned gear bar, and completes a 180° rotation under the rotation of the spring behind the rotating sleeve and the abutment of the limit column, so as to facilitate the double-sided bursting strength test of the corrugated paper.

[0017] Secondly, as the motor continues to change direction and rotate, when the storage plate slides upward, the transmission teeth on the clamping roller side contact the tooth plate on the offset gear bar and rotate, so that the clamping roller rotates to complete the clamping of the corrugated paper. After the double-sided bursting strength test of the corrugated paper, the rotation of the clamping roller is used to drive the corrugated paper to deviate to one side, so as to realize the bursting strength test of multiple positions and front and back sides on a single corrugated paper. There is no need for manual control and adjustment by the operator throughout the process, so the rapid test of the bursting strength of the corrugated paper can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the bursting strength testing device for corrugated paper boxes of the present invention;

[0019] Figure 2 It is a schematic diagram of the installation structure of the chuck and the lower chuck on the surface of the testing table of the present invention;

[0020] Figure 3 It is a schematic diagram of placing corrugated paper on the driven roller and the clamping roller of the present invention;

[0021] Figure 4 This is a schematic diagram of the overall structure of the steering lifting assembly of the present invention;

[0022] Figure 5 This is a schematic diagram of the rear view structure connection of the track frame of the present invention;

[0023] Figure 6 This is a schematic diagram of the locking process of corrugated paper on the track rack of the present invention;

[0024] Figure 7 This is a schematic diagram of 180° flipping of the corrugated paper on the track rack of the present invention.

[0025] In the figure: 1. test table; 2. cover shell; 3. telescopic assembly; 4. placement plate; 5. upper chuck; 6. clamping and pulling assembly; 7. gear column; 8. cavity; 9. gear sleeve; 10. pad; 11. lower chuck; 12. steering lifting assembly; 121. track frame; 122. slider; 123. motor; 124. threaded rod; 125. offset gear bar; 126. limit block; 127. gear plate; 13. rotating sleeve; 14. storage plate; 15. driven roller; 16. clamping roller; 17. spring; 18. limit column; 19. control panel. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-7 , the present invention provides a technical solution:

[0028] Example 1: The bursting strength can be measured by a bursting tester, and the bursting strength of corrugated paperboard can also be calculated from the raw materials used. Because there are gaps between the layers of corrugated paperboard, the buffering capacity is increased, but it is easier to be broken one by one, so the sum of the bursting strengths of each layer of paperboard is multiplied by a coefficient of 0.95 to get a result that is consistent with the actual situation. The bursting strength has nothing to do with the corrugated layer. On the one hand, the bursting strength of the corrugated layer is much lower than that of the paperboard. On the other hand, the bursting strength is a static bursting strength. The buffering of the corrugated layer is greater, which greatly reduces its bursting strength to the point that it can be ignored.

[0029] like Figure 1 Compared with the original burst tester, the backing plate 10 and the steering lifting assembly 12 are installed on the basis of the original instrument, and the telescopic assembly 3 installed on the top of the cover shell 2 is used to drive the placement plate 4 in the cover shell 2 to move. At the same time, within the set height, the tooth column 7 symmetrically installed at the bottom of the placement plate 4 is meshed and connected with the tooth sleeve 9 in the cavity 8 in the test table 1, and the rotation of the tooth sleeve 9 drives the backing plate 10 to rise during the descent of the placement plate 4, so that the lower clamping plate 11 installed on the top of the backing plate 10 is abutted with the upper clamping plate installed at the bottom of the placement plate 4;

[0030] Before the two come into contact, the corrugated cardboard placed on the steering lifting assembly 12 is moved between the two, that is, the two sides of the corrugated cardboard are clamped, and then the elastic film in the entire lower clamping plate 11 is pushed up, and the hydraulically rising elastic film completes the hole in the abutting corrugated cardboard, and the burst resistance value is recorded at the moment of the hole being broken, and the data size is reflected through the control panel 19 on the side of the cover shell 2.

[0031] Example 2: Considering the accuracy of the burst resistance test value of corrugated cardboard, multiple groups of corrugated cardboards are set for group testing. At the same time, random multi-position measurements and two-side measurements are required on a single piece of corrugated cardboard to obtain the average burst resistance data to ensure data accuracy;

[0032] In order to facilitate the movement and flipping of the corrugated cardboard, a steering lifting assembly 12 is installed on the testing platform 1. Figure 3As shown, the track frame 121 is symmetrically arranged on the rotating frame, which is convenient for pre-placing the corrugated cardboard when testing the bursting strength of a single corrugated cardboard, and the process is performed alternately to improve the bursting strength testing rate of the corrugated cardboard;

[0033] At the same time Figure 4 As shown, a slider 122 is vertically slidably connected to the track frame 121, and the motor 123 installed on the top and the threaded rod 124 driven by the motor 123 are rotated to control the entire slider 122 to slide up and down on the surface of the track frame 121. At the same time, the track frame 121 is horizontally and laterally slidably connected to a dislocation bar 125, which is in a semi-enclosed "U" shape, and a limited block 126 is fixedly connected to the middle position of the position. The section of the limited block 126 is triangular, and a rotating sleeve 13 is movably connected to the slider 122. The rotating sleeve 13 passes through both sides of the slider 122, and a storage plate 14 is fixed to the front end of the rotating sleeve 13 by bolts. At the same time, a protruding block is symmetrically arranged on the rotating sleeve 13 behind the storage plate 14;

[0034] Combination Figure 5 A spring 17 is connected to the side of the rotating sleeve 13, one side of the spring 17 is connected to the bottom of the rotating block, and the rotating sleeve 13 is restricted in its rotation. A limiting column 18 is symmetrically fixed on the slider 122 on the side of the rotating sleeve 13, and is used to limit the rotation of the rotating sleeve 13;

[0035] For the corrugated cardboard to be placed and fixed on the track frame 121, a driven roller 15 is symmetrically and movably connected to one side of the storage plate 14, and a clamping roller 16 is movably connected to the other side, wherein the cross section of the clamping roller 16 is cam-shaped. Figure 6 As shown, the small radius side of the clamping roller 16 cooperates with the driven roller 15 to receive the corrugated cardboard instead of clamping it;

[0036] At this time, the corrugated cardboard slides easily between the clamping roller 16 and the driven roller 15, and the slider 122 moves downward. At this time, the protruding block on the rotating sleeve 13 contacts the top limit block 126 of the offset gear bar 125, causing the offset gear bar 125 to move rightward away from the initial position. A tooth plate 127 is also fixed inside the offset gear bar 125. The offset gear bar 125 moving rightward moves the tooth plate 127 to the transmission tooth section installed behind the clamping roller 16. At the same time, the offset gear bar 125 moves with damping;

[0037] The upwardly moving slider 122 drives the storage plate 14 to move, and the transmission teeth behind the clamping roller 16 start to rotate after contacting the tooth plate 127. After the clamping roller 16 rotates, the large diameter side gradually rotates to the top of the corrugated cardboard, and cooperates with the driven roller 15 to complete the clamping of the corrugated cardboard. At this time, the corrugated cardboard is clamped on one side of the storage plate 14, thus avoiding the problem of sliding of the corrugated cardboard.

[0038] As the slider 122 moves upward, the protruding block on the rotating sleeve 13 contacts the misaligned stop bar 125. At this time, the height of the corrugated cardboard is located between the upper clamping plate 5 and the lower clamping plate 11. Figure 2 As shown, at this time, the telescopic component 3 drives the tooth column 7 and the placement plate 4 to descend, and the upper clamping plate 5 and the lower clamping plate 11 move synchronously to complete the clamping of the two sides of the corrugated cardboard, and then the corrugated cardboard bursting strength test is carried out, and the corrugated cardboard with the hole completed is turned 180°, and the bursting strength test of the other side is started;

[0039] When the slider 122 continues to move upward, the protruding block on the rotating sleeve 13 contacts the misaligned stop bar 125 and rotates 180° counterclockwise. Figure 7 As shown, the corrugated cardboard on the clamping roller 16 is driven to rotate at the same time. At the same time, due to the clamping effect of the clamping roller 16, the corrugated cardboard does not deflect during the flipping process. Since the punching positions of the flipped corrugated cardboard are the same, it is necessary to dislocate. A clamping and pulling assembly 6 is installed on the inner side of the cover 2. The clamp is driven by an electric push rod to contact the corrugated cardboard. While clamping, the corrugated cardboard on the clamping roller 16 is dragged to move forward and backward to change the position of the hole on the front side of the corrugated cardboard. At this time, the upper clamping plate 5 and the lower clamping plate 11 move toward each other to complete the bursting strength test of the back side of the corrugated cardboard.

[0040] Usually, a single piece of corrugated cardboard needs to be tested for bursting strength on the front and back sides at three locations. When the slider 122 moves downward, the raised block on the rotating sleeve 13 pushes the limit block 126 to slide, causing the entire misaligned bar 125 to reset and return to the initial position. At this time, the slider 122 moves upward. With the help of the reset misaligned bar 125, the rotating sleeve 13 rotates 180° clockwise to return to the front side. At this time, a hole is left on the front side of the corrugated cardboard and a hole is left vertically at the rear side.

[0041] Repeat the front punching operation of the corrugated cardboard, but when the slider 122 moves upward, the transmission teeth on the side of the clamping roller 16 contact the tooth plate 127 again and then rotate. At this time, the clamping roller 16 no longer only clamps the corrugated cardboard, but also drives the corrugated cardboard to move horizontally, thereby changing the position of the hole to be punched on the corrugated cardboard. At this time, with the movement of the upper clamping plate 5 and the lower clamping plate 11, the bursting strength test of another position on the same corrugated cardboard begins;

[0042] When the three positions of a single piece of corrugated cardboard are detected, the clamping roller 16 is rotated to the small diameter side. With the rotation of the track frame 121, the operator can take out the measured corrugated cardboard. The operator only needs to perform the initial placement of the corrugated cardboard during the whole process, and there is no need to adjust the position and flipping of the corrugated cardboard subsequently, which makes the bursting strength test of the corrugated box more convenient and improves the efficiency of data acquisition.

[0043] In the present invention, two-thirds of the corrugated cardboard to be tested is clamped between the driven roller 15 and the clamping roller 16, and the excess part is toward the clamping roller 16 side, the track frame 121 rotates 180 degrees to send the corrugated cardboard into the cover 2, and the motor 123 controls the slider 122 on the track frame 121 to move downward, and the protruding block on the side of the rotating sleeve 13 contacts the triangular limit block 126 on the misaligned gear bar 125, driving the misaligned gear bar 125 to slide and moving the tooth plate 127 to the transmission gear behind the clamping roller 16;

[0044] As the slider 122 moves upward, the transmission teeth on the side of the clamping roller 16 contact the tooth plate 127 on the offset bar 125 and rotate, driving the clamping roller 16 to rotate while the clamping roller 16 completes the clamping of the placed corrugated cardboard;

[0045] The storage plate 14 clamps the corrugated cardboard and moves upward, and stops when the raised block on the rotating sleeve 13 contacts the top of the offset stop bar 125, and the telescopic component 3 pushes the placement plate 4 to move downward, the tooth column 7 contacts the inner tooth sleeve 9 of the detection table 1 and pushes the pad 10 upward, and the upper chuck 5 at the bottom of the placement plate 4 and the upper and lower chucks 11 of the pad 10 move towards each other to complete the clamping of the two sides of the corrugated cardboard, and the elastic film in the lower chuck 11 is lifted to complete the rupture of the corrugated cardboard, and at the same time, the bursting strength value of the corrugated cardboard is obtained according to the control panel 19;

[0046] The slider 122 continues to rise, and the rotating sleeve 13 abutted by the misaligned stop bar 125 begins to rotate. During the rotation of the other side of the rotating sleeve 13, the spring 17 pulls the rotating sleeve 13 to complete a 180° turn. The clamping and pulling assembly 6 in the housing 2 pulls the corrugated paper turned 180° through the clamp at the end of the electric push rod. At the same time, the telescopic assembly 3 drives the placement plate 4 to descend again. The upper clamping plate 5 and the lower clamping plate clamp the reversed corrugated paperboard and perform a tear resistance test.

[0047] At this time, the slider 122 moves downward to drive the rotating sleeve 13 to contact the limit block 126, driving the misaligned gear bar 125 to reset. Subsequently, the slider 122 rises to make the rotating sleeve 13 side contact the misaligned gear bar 125 and perform a 180° turn to reset. At this time, the sliding sleeve descends to complete the reset of the misaligned gear bar 125. The transmission teeth on the back side of the rising clamping roller 16 contact the tooth plate 127 and rotate. The rotation of the clamping roller 16 drives the entire corrugated cardboard to move horizontally, thereby realizing the subsequent transposition and burst resistance detection operation of the corrugated cardboard.

[0048] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

[0049] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0050] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A bursting strength testing device for a corrugated paper box, comprising a testing platform (1) and a cover (2), wherein the top of the testing platform (1) is fixed with the cover (2) by bolts, characterized in that: A telescopic assembly (3) is fixed to the top of the housing (2) by means of bolts, a placement plate (4) is installed inside the housing (2), and the telescopic assembly (3) is fixed to the top of the placement plate (4); An upper chuck (5) is fixed to the bottom of the placement plate (4) by bolts, a pad (10) is installed on the detection platform (1), a cavity (8) is symmetrically opened in the detection platform (1), and gear sleeves (9) are movably connected to the inner walls of both sides of the cavity (8); Both sides of the pad (10) penetrate the detection platform (1) and extend into the cavity (8); the pad (10) is located on the inner and outer walls of the cavity (8) and meshedly connected with the tooth sleeve (9); the top of the pad (10) is fixed with a lower chuck (11) by bolts; the bottom of the placement plate (4) is symmetrically fixed with a tooth column (7) by spot welding; one end of the tooth column (7) penetrates one side of the detection platform (1) and meshedly connected with one side of the tooth sleeve (9) in the cavity (8); and a control panel (19) is installed on the side of the cover shell (2).

2. A corrugated box bursting strength testing device according to claim 1, characterized in that: The outer wall of the housing (2) is provided with a clamping and pulling assembly (6), and the top of the testing platform (1) is movably connected with a steering and lifting assembly (12).

3. A corrugated box bursting strength testing device according to claim 2, characterized in that: The steering lifting assembly (12) comprises a track frame (121) and a slider (122); the side wall of the track frame (121) is slidably connected to the slider (122); a motor (123) is fixed to the top of the track frame (121) by bolts; a threaded rod (124) is fixed to the output end of the motor (123); one end of the threaded rod (124) passes through one side of the slider (122) and is movably connected to the bottom of the track frame (121); and the slider (122) and the threaded rod (124) are threadedly connected.

4. A corrugated box bursting strength testing device according to claim 3, characterized in that: The steering lifting assembly (12) further comprises a dislocation bar (125) and a limit block (126); the bottom of the track frame (121) is slidably connected with the dislocation bar (125); the top of the dislocation bar (125) is fixed to the limit block (126) by spot welding; and a toothed plate (127) is fixed to an inner wall of one side of the dislocation bar (125) by bolts.

5. A corrugated box bursting strength testing device according to claim 4, characterized in that: A rotating sleeve (13) is movably connected inside the slider (122); one side of the rotating sleeve (13) passes through the slider (122) and is fixed with a storage plate (14); the other side of the rotating sleeve (13) passes through the slider (122) and is installed with a spring (17); one side of the spring (17) is connected to the bottom of the slider (122); and a limiting column (18) is symmetrically welded and fixed to the outer wall of the slider (122) and located on the side of the rotating sleeve (13).

6. A corrugated box bursting strength testing device according to claim 5, characterized in that: One side of the storage plate (14) is symmetrically and movably connected to a driven roller (15) via a bearing, the other side of the storage plate (14) is movably connected to a clamping roller (16), and the storage plate (14) at the bottom of the clamping roller (16) is movably connected to a driven roller (15).

7. A corrugated box bursting strength testing device according to claim 6, characterized in that: One side of the clamping roller (16) passes through the storage plate (14) and is fixed with a transmission tooth. The rotating sleeve (13) is symmetrically fixed with a protruding block on the side of the slider (122), and the protruding block is arranged correspondingly to the upper limit block (126) of the misaligned gear bar (125).

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