Cigarette case paperboard strength detection device

Abstract

The invention relates to the technical field of strength detection equipment, in particular to a cigarette case paperboard strength detection device which comprises a workbench, the top of the workbench is connected with a hydraulic box, the top of the hydraulic box is connected with a detachable positioning seat, a top film is arranged in the detachable positioning seat, the top of the workbench is connected with a shell, and the top of the shell is provided with an air cylinder. And a pressure head for applying pressure to the paperboard is mounted on the air cylinder. Through cooperation of the hydraulic box, the detachable positioning seat, the top film, the air cylinder, the pressing head, the clamp and the butt joint assembly, detection of the bursting strength, the edge pressing strength and the tensile strength of the paperboard can be completed, the detection process can be simplified, the paperboard strength detection efficiency can be improved, the data integration accuracy can be improved, and the paperboard strength detection precision can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of strength detection equipment, and in particular to a cigarette box paperboard strength detection device. Background Art

[0002] Cigarette box cardboard strength testing is an important process to ensure that the packaging material can effectively protect cigarettes from damage. This test focuses on the mechanical properties of the cardboard, including but not limited to the following key indicators: 1. Edge pressure strength: measures the ability of the edge of the cardboard to withstand vertical pressure; 2. Tensile strength: evaluates the maximum stress that the paperboard can withstand before being stretched to break; 3. Burst strength: Tests the ability of the cardboard surface to resist uniformly increased pressure until it breaks.

[0003] These performance indicators directly affect whether the carton can maintain its structural integrity and aesthetics during production, transportation and final use.

[0004] At present, the industry generally relies on split-type equipment to test the strength of cigarette box paperboard, which has the following defects: 1. The testing process is scattered: Since edge pressure testing, tensile testing and burst resistance testing need to be completed on different independent devices, operators must frequently switch between these devices. Each switch involves preparing new samples, adjusting equipment and other steps. Every time when switching from one testing task to another, there will inevitably be some non-productive waiting time, such as equipment preheating, parameter adjustment and sample loading. The accumulation of these extra times will significantly extend the cycle of the entire testing process, which not only increases the complexity of the operation, but also greatly reduces the testing efficiency.

[0005] 2. Limited detection accuracy: Data synchronization and integration between different devices are difficult, resulting in large errors in comprehensive performance analysis, affecting the accuracy of the final evaluation. Summary of the invention

[0006] The object of the present invention is to provide a cigarette box paperboard strength detection device integrating edge pressure detection, stretching detection and burst resistance detection functions in order to solve the above problems.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a cigarette box cardboard strength detection device, comprising a workbench, a hydraulic box connected to the top of the workbench, a detachable positioning seat connected to the top of the hydraulic box, a top film arranged in the detachable positioning seat, a through hole 1 for the top film to arch upward to apply pressure to the cardboard is opened on the detachable positioning seat, a shell is connected to the top of the workbench, a cylinder is installed on the top of the shell, a pressure head for applying pressure to the cardboard is installed on the cylinder, a through hole 2 for the top film to arch upward is opened at the bottom of the pressure head, and two sets of upper and lower guide rails are connected in the shell, each set of guide rails A slide plate is provided on the rail, a spring is connected between the slide plate and the shell, a slide rail is connected to the upper slide plate, a lifting plate is provided in the slide rail, a clamp for clamping cardboard is connected to the lifting plate and the lower slide plate, a through slot for the clamp to enter and exit is opened on the shell, a locking assembly for locking the slide plate is provided on the shell, a push plate is connected to the pressure head, and when the push plate moves up, the locking assembly is driven to release the lock of the slide plate, a docking assembly is provided between the pressure head and the upper clamp, and the upper clamp is locked on the pressure head through the docking assembly, so that the pressure head drives the upper clamp to move up to stretch the cardboard.

[0008] Preferably, the locking assembly includes two upper and lower pushing frames slidably arranged on the shell, and a wedge-shaped block is slidably provided on each guide rail. The pushing frames on the upper and lower sides are respectively in contact with the wedge-shaped blocks on the upper and lower sides, and a spring is connected between the wedge-shaped blocks and the shell. The slide plate is symmetrically provided with slots matching the wedge-shaped blocks. The lifting and lowering of the push plate can contact the pushing frame and push the pushing frame to move. The movement of the pushing frame pushes the wedge-shaped block out of the slot to release the lock of the slide plate.

[0009] Preferably, the docking assembly includes two motors symmetrically installed in the pressure head, the output shafts of the two motors are connected to inner diamond rods, outer diamond rods are slidably provided inside the inner diamond rods, spring three located inside the outer diamond rods is connected between the outer diamond rods and the inner diamond rods, two hook blocks are symmetrically connected to the lower part of the inner diamond rods, the inner diamond rods and the hook blocks are slidably matched with the pressure head, two docking blocks are symmetrically connected to the upper clamp, and movable grooves are opened on the docking blocks for the inner diamond rods and the hook blocks to slide up and down.

[0010] Preferably, a humidifying mechanism for humidifying the cardboard is provided outside the shell, and the humidifying mechanism includes two transparent covers respectively hinged on both sides of the outside of the shell, and the two transparent covers are closed to form a closed test chamber, and both transparent covers are connected with atomizing nozzles for spraying water on the cardboard, and a water tank is installed in the workbench, and a water pump is installed in the water tank, and the water pump is connected to the atomizing nozzle through a water pipe.

[0011] Preferably, a transparent curved plate is connected to the atomizing nozzle, the atomizing nozzle sprays atomized water onto the transparent curved plate, and a humidity sensor is installed on the transparent curved plate.

[0012] Preferably, the pressure head includes a hollow pressure cylinder connected to the cylinder, a pressure plate is connected to the lower part of the outer wall of the hollow pressure cylinder, the bottom of the pressure plate is flush with the bottom of the hollow pressure cylinder, a rotating plate is rotatably connected to the middle part of the hollow pressure cylinder, the bottom of the rotating plate is flush with the bottom of the hollow pressure cylinder, through hole 2 is opened at the bottom of the rotating plate, the motor is installed in the hollow pressure cylinder, and the outer diamond rod and the hook block are slidably matched with the bottom of the hollow pressure cylinder.

[0013] Preferably, the clamp includes a circular plate, in which two clamping plates are provided which can approach and move away from each other, a bidirectional screw is rotatably connected to the circular plate, and the bidirectional screw is threadedly connected to the two clamping plates, the circular plate of the upper clamp is connected to the lifting plate, the circular plate of the lower clamp is connected to the lower slide plate, and two docking blocks are symmetrically connected to the circular plate of the upper clamp.

[0014] Preferably, a guide groove is spaced apart on one side of the transparent arc plate facing the atomizing nozzle connected thereto, and a water collecting trough is connected to the lower part of one side of the transparent arc plate facing the atomizing nozzle connected thereto, and the water collecting trough is connected to the water tank through a return pipe.

[0015] Preferably, a lifting mechanism is provided on the top of the hydraulic box, which is used to lift the cardboard and separate it from the detachable positioning seat. The lifting mechanism includes a U-shaped plate connected to the top of the hydraulic box, the U-shaped plate is located on the outside of the detachable positioning seat, and both sides of the U-shaped plate are provided with lifting plates that can be lifted and lowered, which are used to lift the cardboard and separate it from the detachable positioning seat. A spring four is connected between the bottom of the top plate and the lower part of the U-shaped plate.

[0016] Preferably, a distance sensor is installed on the top of the hydraulic box, and the distance sensor is located outside the detachable positioning seat and inside the U-shaped plate.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. Through the cooperation of hydraulic box, detachable positioning seat, top film, cylinder, pressure head, fixture and docking assembly, three tests of cardboard's bursting strength, edge pressure strength and tensile strength can be completed, which can not only simplify the testing process and improve the efficiency of cardboard strength testing, but also improve the accuracy of data integration and improve the accuracy of cardboard strength testing.

[0018] 2. The humidification mechanism can humidify the cardboard. By controlling the change of humidity, the humidity conditions that the cardboard may encounter in the actual use environment are simulated, and the strength changes of the cardboard under different humidity conditions are detected. This can more comprehensively and accurately evaluate the strength changes of the cardboard under different humidity conditions, thereby further improving the accuracy of cardboard strength detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0020] Figure 2The figure is a schematic diagram of the installation of the hydraulic box, the distance sensor and the detachable positioning seat of the present invention.

[0021] Figure 3 It is a schematic diagram of the partial three-dimensional structure of the present invention Figure 1 .

[0022] Figure 4 It is a bottom view of the pressure head of the present invention.

[0023] Figure 5 It is a schematic diagram of the installation of the docking assembly and the jacking mechanism of the present invention.

[0024] Figure 6 It is a schematic diagram of the partial three-dimensional structure of the present invention Figure 2 .

[0025] Figure 7 It is a schematic diagram of the installation of the locking assembly of the present invention.

[0026] Figure 8 It is a schematic diagram of the three-dimensional structure of the locking assembly of the present invention.

[0027] Fig. 9 It is a schematic diagram of the three-dimensional structure of the clamp of the present invention.

[0028] Fig.10 It is a three-dimensional structural schematic diagram of the docking assembly of the present invention.

[0029] Fig.11 It is a partial three-dimensional structural schematic diagram of the docking assembly of the present invention.

[0030] Fig.12 It is a schematic diagram of the installation of the humidifying mechanism of the present invention.

[0031] Fig.13 It is a schematic diagram of the three-dimensional structure of the humidifying mechanism of the present invention.

[0032] Fig.14 The figure is a schematic diagram of the connection of the atomizing nozzle, the water delivery pipe, the transparent curved plate and other components of the present invention.

[0033] Fig.15 It is a schematic diagram of the three-dimensional structure of the lifting mechanism of the present invention.

[0034] In the figure: 1-working table, 2-hydraulic box, 21-distance sensor, 3-detachable positioning seat, 30-through hole one, 31-external thread ring, 32-internal thread ring, 33-pressing plate, 4-top membrane, 5-housing, 51-through groove, 6-cylinder, 7-pressure head, 70-through hole two, 71-hollow pressure cylinder, 72-pressure plate, 73-turn plate, 8-guide rail, 9-slide plate, 91-spring one, 10-slide rail, 11-lifting plate, 12-clamp, 121-retractable plate, 122-clamp plate, 123-rubber plate, 124-bidirectional screw rod, 130-inclined surface one, 131-pushing frame, 132-wedge block, 13 3-spring two, 134-inclined surface two, 135-slot, 136-guide rod, 14-push plate, 151-motor, 152-inner diamond rod, 153-outer diamond rod, 154-hook block, 155-spring three, 156-docking block, 157-movable groove, 161-water tank, 162-transparent cover, 163-atomizing nozzle, 164-water pipe, 171-transparent arc plate, 172-humidity sensor, 173-guide groove, 174-water collecting trough, 175-return pipe, 181-U-shaped plate, 182-top plate, 183-spring four, 184-water trough, 185-guide groove, 186-guide block. DETAILED DESCRIPTION

[0035] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0036] See also Figure 1-Figure 9A cigarette box paperboard strength detection device includes a workbench 1, a hydraulic box 2 is connected to the top of the workbench 1, a detachable positioning seat 3 is connected to the top of the hydraulic box 2, a top film 4 is arranged in the detachable positioning seat 3, the detachable positioning seat 3 includes an external threaded ring 31 connected to the top of the hydraulic box 2, an internal threaded ring 32 is connected to the external threaded ring 31, a pressing plate 33 is connected to the upper part of the internal threaded ring 32, the pressing plate 33 is used to press the top film 4 on the external threaded ring 31 to prevent the top film 4 from moving, and a through hole 30 is opened on the pressing plate 33 for the top film 4 to arch up and apply pressure to the paperboard. The internal threaded ring 32 is unscrewed from the external threaded ring 31 to release the lock on the top film 4, so as to facilitate the replacement of the top film 4. The top of the workbench 1 is connected to a shell 5 located at the rear side of the hydraulic box 2 A cylinder 6 is installed on the top of the shell 5, and a pressure head 7 for applying pressure to the cardboard is installed on the piston rod of the cylinder 6. The pressure head 7 includes a hollow pressure cylinder 71 connected to the piston rod of the cylinder 6, and a pressure plate 72 is connected to the lower part of the outer wall of the hollow pressure cylinder 71. The bottom of the pressure plate 72 is flush with the bottom of the hollow pressure cylinder 71. A rotating plate 73 is rotatably connected to the middle part of the hollow pressure cylinder 71. The bottom of the rotating plate 73 is flush with the bottom of the hollow pressure cylinder 71. Appropriate friction contact is designed between the rotating plate 73 and the hollow pressure cylinder 71 to achieve a damping effect of movement, so as to enhance the connection stability between the rotating plate 73 and the hollow pressure cylinder 71 and prevent the rotating plate 73 from being pushed by the cardboard to rotate by itself. A through hole 70 is opened at the bottom of the rotating plate 73 for the top film 4 to arch up. The shell 5 is connected with two upper and lower A set of guide rails 8, each set of guide rails 8 has two guide rails, and the two guide rails 8 in each set are symmetrically arranged on the left and right. A slide plate 9 is slidably provided on each set of guide rails 8. The shape of the lower slide plate 9 is T-shaped. Two springs 91 are symmetrically connected between the rear side of the slide plate 9 and the inner wall of the rear side of the shell 5. The front side of the upper slide plate 9 is connected to a slide rail 10 in contact with the lower slide plate 9. A lifting plate 11 is slidably provided in the slide rail 10. The front sides of the lifting plate 11 and the lower slide plate 9 are both connected to a clamp 12 for clamping a cardboard. A through groove 51 for the clamp 12 to enter and exit is opened on the front side wall of the shell 5. The shape of the through groove 51 is I-shaped. The clamp 12 includes a circular plate 121. The circular plate 121 is slidably connected with two front and rear clamps 122 through a guide rod. The two clamps 122 are close to each other. The near side is connected with a rubber plate 123 for increasing friction, which can make the clamping plate 122 clamp the cardboard more firmly, and can buffer and protect the cardboard to prevent the cardboard from being damaged during the clamping process. The right side of the circular plate 121 is rotatably connected with a bidirectional screw rod 124, and the bidirectional screw rod 124 is threadedly connected with the two clamping plates 122. The circular plate 121 of the upper clamp 12 is connected to the front side of the lifting plate 11, and the circular plate 121 of the lower clamp 12 is connected to the front side of the lower slide plate 9. Rotating the bidirectional screw rod 124 can drive the two clamping plates 122 to approach each other to clamp the cardboard, and reversing the bidirectional screw rod 124 can drive the two clamping plates 122 away from each other to release the cardboard. A locking component for locking the slide plate 9 is provided on the shell 5, and a push plate 14 is connected to the right rear side of the top of the pressure plate 72.When the push plate 14 moves upward, the locking assembly is driven to unlock the slide plate 9. A docking assembly is provided between the pressure head 7 and the upper clamp 12. The upper clamp 12 is locked on the pressure head 7 through the docking assembly, so that the pressure head 7 drives the upper clamp 12 to move upward to stretch the paperboard.

[0037] See also Figure 5-Figure 8 The locking assembly includes two upper and lower push frames 131 slidably arranged on the housing 5, and the front side of the push frame 131 is provided with two upper and lower inclined surfaces 130, and each guide rail 8 is slidably provided with a wedge-shaped card block 132, and the rear side of the push frame 131 is provided with two left and right inclined surfaces 134, and the two inclined surfaces 134 on the upper push frame 131 are respectively in contact with the two wedge-shaped card blocks 132 on the upper side, and the two inclined surfaces 134 on the lower push frame 131 are respectively in contact with the two wedge-shaped card blocks 132 on the lower side, and the slide plate 9 has two left and right symmetrical card grooves 135 matching the wedge-shaped card blocks 132, and the wedge card blocks 132 are respectively in contact with the wedge-shaped card blocks 132. A guide rod 136 is slidably connected to 32, and the guide rod 136 is fixedly connected to the inner wall of the shell 5 to guide the movement of the wedge-shaped block 132 to ensure that the wedge-shaped block 132 moves smoothly. A spring 133 is sleeved on the guide rod 136, and the two ends of the spring 133 are respectively connected to the wedge-shaped block 132 and the shell 5. The lifting of the push plate 14 can contact the inclined surface 130 on the pushing frame 131, and squeeze the inclined surface 130 to make the pushing frame 131 move backward. The pushing frame 131 moves backward through the inclined surface 134 thereon to push the wedge-shaped block 132 out of the card slot 135, thereby releasing the lock on the slide plate 9.

[0038] See also Figure 4 , Figure 5 , Fig. 9 , Fig.10 and Fig.11 The docking assembly includes two motors 151 symmetrically installed in the hollow pressure cylinder 71 with the rotating plate 73 as the symmetry center. The output shafts of the two motors 151 are connected with inner diamond rods 152. The inner diamond rods 152 are slidably provided with outer diamond rods 153. A spring 155 located in the outer diamond rods 153 is connected between the outer diamond rods 153 and the inner diamond rods 152. Two hook blocks 154 are symmetrically connected to the lower part of the inner diamond rods 152. The inner diamond rods 152 and the outer diamond rods 153 are connected to each other. The hook block 154 is slidably matched with the bottom of the hollow pressure cylinder 71. The circular plate 121 of the upper clamp 12 is symmetrically connected to two hollow docking blocks 156 on the outside. A movable groove 157 is opened on the top of the docking block 156 for the inner diamond rod 152 and the hook block 154 to slide up and down. The movable groove 157 consists of a circular groove and two square grooves. The two square grooves are symmetrically arranged front and back with the circular groove as the center of symmetry. The square groove matches the hook block 154, and the circular groove matches the inner diamond rod 152.

[0039] First, the hydraulic box 2 is connected to an infusion pump, and hydraulic oil is injected into the hydraulic box 2 through the infusion pump, so that the hydraulic box 2 is filled with hydraulic oil, and then the cardboard is placed horizontally on the detachable positioning seat 3. Initially, the push plate 14 is located at the lower side of the lower push frame 131, and then the cylinder 6 is controlled to drive the pressure head 7 to move downward to press the cardboard and fix it on the detachable positioning seat 3, and then the infusion pump is controlled to inject hydraulic oil into the hydraulic box 2. Since the hydraulic box 2 is filled with hydraulic oil, as the hydraulic oil is continuously injected into the hydraulic box 2, the pressure in the hydraulic box 2 gradually increases, and finally the top film 4 is pushed upward. The upward arch of the top film 4 applies uniform pressure to the cardboard until the cardboard breaks, simulating the force conditions in actual use, so as to detect the bursting strength of the cardboard. After the bursting strength test is completed, the infusion pump is controlled to extract the excess hydraulic oil in the hydraulic box 2. As the hydraulic oil is extracted, the pressure in the hydraulic box 2 gradually decreases, and the top film 4 returns to its initial flat state under the action of the loss of external pressure, preparing for the next test.

[0040] Then the air cylinder 6 is controlled to drive the pressure head 7 to drive the push plate 14 to move up to between the upper and lower push frames 131 to loosen the cardboard. When the push plate 14 moves up and contacts the lower inclined surface 130 of the lower push frame 131, the push plate 14 continues to move up to squeeze the lower inclined surface 130 of the lower push frame 131, so that the lower push frame 131 moves backward. The lower push frame 131 moves backward through the inclined surface 2 134 thereon, pushing the lower wedge-shaped block 132 out of the slot 135 on the lower slide plate 9 to release the lock of the lower slide plate 9, and the lower spring 2 133 is compressed accordingly. After the lower slide plate 9 is unlocked, the compressed lower spring 1 91 pushes the lower slide plate 9 and the lower clamp 12 to move forward out of the housing 5. After the lower slide plate 9 is separated from the lower wedge-shaped block 132, the lower spring 2 133 pushes the lower wedge-shaped block 132 to move toward the guide rail 8 and reset. The lower wedge-shaped block 132 then pushes the lower push frame 131 forward and resets. Then, the cardboard is vertically placed in the lower clamp 12, and then the lower clamp 12 is manually clamped to fix the cardboard. Then, the rotating plate 73 is manually pushed to rotate 180 degrees so that the through hole 2 70 faces upward, so that the bottom of the hollow pressing cylinder 71, the pressing plate 72 and the rotating plate 73 form a flat surface, thereby ensuring that uniform pressure is applied to the cardboard in the future. Then, the air cylinder 6 is controlled to drive the pressure head 7 to move downward to apply pressure to the upright cardboard, simulating the force conditions in actual use to detect the edge pressure strength of the cardboard. The air cylinder 6 transmits its pressure value to the controller (the controller is not shown in the figure, the controller is existing technology, and no further description is given here). The controller receives the data, processes and analyzes the data, and sends the processed pressure data to the background system (such as a computer or a display screen) so that the operator can monitor and record the pressure changes in the process of the cardboard edge pressure strength detection in real time. At the same time, the operator checks the bending degree of the cardboard.

[0041] After the edge pressure strength test is completed, the lower clamp 12 is firstly released from the cardboard and the cardboard is taken away, and then the cylinder 6 is controlled to drive the pressure head 7 to drive the push plate 14 to move up to the upper side push frame 131. Similarly, when the push plate 14 moves up to the upper side push frame 131, it can push the upper side push frame 131 to move backward, thereby pushing the upper side wedge-shaped block 132 to move out of the card slot 135 on the upper side slide plate 9 to release the lock of the upper side slide plate 9. Under the reset action of the compressed upper side spring 191, the upper side slide plate 9 is pushed to move forward with the upper side clamp 12 out of the housing 5. When the upper side clamp 12 moves out of the I-shaped through slot 51, the upper side clamp 12 moves down accordingly under the action of gravity. Then the cylinder 6 is controlled to drive the pressure head 7 to drive the outer diamond rod 153 to move downward into the docking block 156, thereby driving the hook block 154 to move downward into the docking block 156 and dock with the docking block 156, until the hook block 154 moves downward and disengages from the square groove on the movable groove 157, and then the motor 151 is controlled to drive the inner diamond rod 152 to drive the outer diamond rod 153 to rotate 90 degrees, thereby driving the hook block 154 to rotate 90 degrees and contact the inner top surface of the docking block 156 to hook the docking block 156, thereby locking the upper clamp 12 on the pressure head 7. Then the cylinder 6 is controlled to drive the pressure head 7 to drive the upper clamp 12 to move upward through the docking assembly, and then the cardboard is placed in the upper and lower clamps 12, and the clamps 12 clamp the cardboard, and then the cylinder 6 is controlled to drive the pressure head 7 to drive the upper clamp 12 to continue to move upward, thereby stretching the cardboard to test the tensile strength of the cardboard. Before testing, a tension sensor is first installed at the bottom of the circular plate 121 of the lower clamp 12. The tension sensor can detect the tension in real time. The tension sensor inputs the tension value to the controller, and the controller sends the processed tension data to the background system, so that the test personnel can grasp the tension applied to the cardboard.

[0042] In this way, a single device can complete the three tests of the bursting strength, edge pressure strength and tensile strength of the cardboard, which can not only simplify the test process and improve the efficiency of cardboard strength test, but also improve the accuracy of data integration and the accuracy of cardboard strength test. After the tensile strength test is completed, the clamp 12 is first released from the cardboard and the cardboard is taken away, and then the motor 151 is controlled to drive the inner diamond rod 152 to drive the outer diamond rod 153 to rotate 90 degrees, thereby driving the hook block 154 to rotate 90 degrees and align with the square groove on the movable groove 157, thereby releasing the docking block 156 and releasing the lock between the upper clamp 12 and the pressure head 7. Then, the clamp 12 is manually pushed back into the housing 5, and the slide plate 9 moves backward and resets accordingly. When the slide plate 9 contacts the wedge-shaped block 132, the slide plate 9 continues to push the wedge-shaped block 132 backward in the direction away from the guide rail 8 to compress the spring 2 133. When the slot 135 on the slide plate 9 is aligned with the wedge-shaped block 132, under the resetting action of the spring 2 133, the wedge-shaped block 132 is pushed to be reinserted into the slot 135 to lock the slide plate 9. The slide plate 9 moves backward to compress the spring 1 91. Finally, the cylinder 6 is controlled to drive the pressure head 7 to drive the push plate 14 to move down between the upper and lower push frames 131.

[0043] See also Figure 1 , Fig.12 , Fig.13 and Fig.14 A humidifying mechanism for humidifying the cardboard is provided outside the shell 5, and the humidifying mechanism includes two transparent covers 162 respectively hinged on the outer walls of the left and right sides of the shell 5, and the two transparent covers 162 are closed to form a closed test chamber, and a guide groove for the piston rod of the cylinder 6 is provided on the top of the transparent cover 162, and an atomizing nozzle 163 for spraying water on the cardboard is connected to the two transparent covers 162. A water tank 161 is installed in the workbench 1, and a water pump is installed in the water tank 161. The water pump is connected to the atomizing nozzle 163 through a water pipe 164, and a water injection pipe is connected to the upper right side of the water tank 161. A transparent window for checking the water storage amount therein is embedded on the right side of the water tank 161.

[0044] See also Figure 12-14 A transparent curved plate 171 is connected to the atomizing nozzle 163, and the atomizing nozzle 163 sprays atomized water on the transparent curved plate 171. A humidity sensor 172 is installed on the side of the transparent curved plate 171 facing away from the atomizing nozzle 163 connected thereto. A guide groove 173 is spaced apart on the side of the transparent curved plate 171 facing the atomizing nozzle 163 connected thereto. A water collecting tank 174 is connected to the lower part of the side of the transparent curved plate 171 facing the atomizing nozzle 163 connected thereto. The water collecting tank 174 is connected to the water tank 161 through a return pipe 175. Both the water delivery pipe 164 and the return pipe 175 are hoses to avoid hindering the opening and closing of the transparent cover body 162.

[0045] First, manually rotate and close the two transparent covers 162 to form a closed test chamber, and then control the water pump to work, and transport the water in the water tank 161 to the atomizing nozzle 163 through the water pipe 164, and the atomizing nozzle 163 then sprays the water in atomized form. In this process, the transparent curved plate 171 can block and disperse the atomized water, so that the water mist is evenly sprayed on the cardboard, thereby achieving a uniform humidification effect. The transparent curved plate 171 can also prevent the atomizing nozzle 163 from directly spraying water on the cardboard to prevent the problem of local over-humidification. The excess water on the transparent curved plate 171 will be introduced into the water collection tank 174 through the guide groove 173, and then flow back to the water tank 161 through the return pipe 175 for recycling to reduce the waste of water resources. When the humidity sensor 172 detects that the humidity in the closed test chamber reaches a preset value, the humidity sensor 172 sends a signal to the controller, and the controller controls the water pump to close after receiving the signal. Thus, by controlling the change of humidity, simulating the humidity conditions that the paperboard may encounter in the actual use environment, and detecting the strength change of the paperboard under different humidity conditions, the strength change of the paperboard under different humidity conditions can be evaluated more comprehensively and accurately, thereby further improving the accuracy of the paperboard strength detection. In addition, the closed test chamber formed by the two transparent covers 162 can effectively prevent the paperboard from being broken and splashing around during the detection process, ensuring safe operation and keeping the environment clean.

[0046] See also Figure 5 and Fig.15 , a lifting mechanism is provided on the top of the hydraulic box 2 for lifting the cardboard and separating it from the detachable positioning seat 3. The lifting mechanism includes a U-shaped plate 181 connected to the top of the hydraulic box 2, and the U-shaped plate 181 is located on the outside of the detachable positioning seat 3. The left and right sides of the U-shaped plate 181 are provided with a lifting top plate 182 for lifting the cardboard and separating it from the detachable positioning seat 3. Three springs 183 are connected between the bottom of the top plate 182 and the lower part of the U-shaped plate 181 from front to back. A water trough 184 is spaced from front to back on the top plate 182 for atomized water to flow and spray on the bottom surface of the cardboard. Three guide grooves 185 are spaced from front to back on the inner walls of the left and right sides of the U-shaped plate 181, and a guide block 186 is slidably connected in each guide groove 185. The guide block 186 is connected to the top plate 182 on the same side to guide the lifting of the top plate 182 to ensure the smooth lifting of the top plate 182.

[0047] The top plate 182 can be supported by the spring four 183, so that the top plate 182 can lift the cardboard and separate it from the detachable positioning seat 3. When the cardboard is lifted and separated from the detachable positioning seat 3, the bottom surface of the cardboard will be completely exposed to the spraying range of the atomized water, ensuring that the moisture can be evenly distributed on the entire cardboard surface, improving the uniformity of cardboard humidification, and enhancing the overall humidification effect. When the pressure head 7 presses the cardboard downward to contact the detachable positioning seat 3, the pressure plate 72 on the pressure head 7 pushes the top plate 182 downward to compress the spring four 183. After the pressure head 7 moves upward to separate from the cardboard, under the reset action of the spring four 183, the top plate 182 is pushed upward to lift the cardboard.

[0048] See also Figure 3 and Figure 5 Four distance sensors 21 are installed at intervals along the circumferential direction on the top of the hydraulic box 2 . The distance sensors 21 are located outside the detachable positioning seat 3 and inside the U-shaped plate 181 .

[0049] When the cardboard is laid flat and pressed down by the pressure head 7 to contact the detachable positioning seat 3, the distance sensor 21 detects that the distance between it and the cardboard reaches a preset value, and the distance sensor 21 sends a signal to the controller. After receiving the signal, the controller sends an instruction to the infusion pump. After receiving the instruction from the controller, the infusion pump can inject hydraulic oil into the hydraulic box 2 to perform a bursting strength test on the cardboard. This ensures that the bursting strength test is performed only when specific conditions are met, effectively preventing unnecessary tests caused by operator misoperation.

[0050] The above-mentioned embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those skilled in the art, several modifications, improvements and substitutions can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.

Claims

1. A cigarette box cardboard strength testing device, comprising a workbench (1), the top of the workbench (1) is connected to a hydraulic box (2), the top of the hydraulic box (2) is connected to a detachable positioning seat (3), a top film (4) is arranged in the detachable positioning seat (3), a through hole (30) is opened on the detachable positioning seat (3) for the top film (4) to arch upward to apply pressure to the cardboard, the top of the workbench (1) is connected to a shell (5), the top of the shell (5) is equipped with a cylinder (6), the cylinder (6) is equipped with a pressure head (7) for applying pressure to the cardboard, and the bottom of the pressure head (7) is equipped with a through hole (70) for the top film (4) to arch upward, characterized in that: Two groups of upper and lower guide rails (8) are connected in the shell (5), each group of guide rails (8) is provided with a slide plate (9), a spring (91) is connected between the slide plate (9) and the shell (5), a slide rail (10) is connected to the upper slide plate (9), a lifting plate (11) is provided in the slide rail (10), a clamp (12) for clamping a cardboard is connected to the lifting plate (11) and the lower slide plate (9), a through slot (51) for the clamp (12) to enter and exit is opened on the shell (5), a locking assembly for locking the slide plate (9) is provided on the shell (5), a push plate (14) is connected to the pressure head (7), when the push plate (14) moves upward, the locking assembly is driven to release the lock of the slide plate (9), a docking assembly is provided between the pressure head (7) and the upper clamp (12), the upper clamp (12) is locked on the pressure head (7) through the docking assembly, so that the pressure head (7) drives the upper clamp (12) to move upward to stretch the cardboard.

2. A cigarette box cardboard strength detection device according to claim 1, characterized in that: The locking assembly comprises two upper and lower push frames (131) slidably arranged on the housing (5), a wedge-shaped block (132) is slidably arranged on each guide rail (8), the upper and lower push frames (131) respectively contact the upper and lower wedge-shaped blocks (132), a second spring (133) is connected between the wedge-shaped blocks (132) and the housing (5), a slide plate (9) is symmetrically provided with a card slot (135) matching the wedge-shaped blocks (132), the push plate (14) can be raised and lowered to contact the push frame (131) and push the push frame (131) to move, the push frame (131) moves to push the wedge-shaped blocks (132) out of the card slot (135), and the slide plate (9) is unlocked.

3. A cigarette box paperboard strength detection device according to claim 2, characterized in that: The docking assembly comprises two motors (151) symmetrically mounted in the pressure head (7), the output shafts of the two motors (151) are connected to inner diamond rods (152), an outer diamond rod (153) is slidably arranged in the inner diamond rod (152), a spring three (155) located in the outer diamond rod (153) is connected between the outer diamond rod (153) and the inner diamond rod (152), two hook blocks (154) are symmetrically connected to the lower part of the inner diamond rod (152), the inner diamond rod (152) and the hook block (154) are slidably matched with the pressure head (7), and two docking blocks (156) are symmetrically connected to the upper clamp (12), and a movable groove (157) is opened on the docking block (156) for the inner diamond rod (152) and the hook block (154) to slide up and down.

4. A cigarette box paperboard strength detection device according to claim 3, characterized in that: A humidifying mechanism for humidifying the paperboard is provided outside the shell (5), the humidifying mechanism comprising two transparent covers (162) respectively hinged on two sides of the outside of the shell (5), the two transparent covers (162) forming a closed test chamber when closed, the two transparent covers (162) are both connected to an atomizing nozzle (163) for spraying water on the paperboard, a water tank (161) is installed in the workbench (1), a water pump is installed in the water tank (161), and the water pump is connected to the atomizing nozzle (163) through a water pipe (164).

5. A cigarette box paperboard strength detection device according to claim 4, characterized in that: A transparent curved plate (171) is connected to the atomizing nozzle (163), and the atomizing nozzle (163) sprays atomized water onto the transparent curved plate (171). A humidity sensor (172) is installed on the transparent curved plate (171).

6. A cigarette box paperboard strength detection device according to claim 5, characterized in that: The pressure head (7) comprises a hollow pressure cylinder (71) connected to the cylinder (6), a pressure plate (72) is connected to the lower part of the outer wall of the hollow pressure cylinder (71), the bottom of the pressure plate (72) is flush with the bottom of the hollow pressure cylinder (71), a rotating plate (73) is rotatably connected to the middle part of the hollow pressure cylinder (71), the bottom of the rotating plate (73) is flush with the bottom of the hollow pressure cylinder (71), the second through hole (70) is provided at the bottom of the rotating plate (73), the motor (151) is installed in the hollow pressure cylinder (71), and the outer diamond rod (153) and the hook block (154) are slidably matched with the bottom of the hollow pressure cylinder (71).

7. A cigarette box paperboard strength detection device according to claim 6, characterized in that: The clamp (12) comprises a circular plate (121), wherein two clamping plates (122) capable of moving closer to or farther from each other are arranged in the circular plate (121), a bidirectional screw rod (124) is rotatably connected to the circular plate (121), and the bidirectional screw rod (124) is threadedly connected to the two clamping plates (122), the circular plate (121) of the upper clamp (12) is connected to the lifting plate (11), the circular plate (121) of the lower clamp (12) is connected to the lower slide plate (9), and two docking blocks (156) are symmetrically connected to the circular plate (121) of the upper clamp (12).

8. A cigarette box paperboard strength detection device according to claim 7, characterized in that: A guide groove (173) is spaced apart on one side of the transparent curved plate (171) facing the atomizing nozzle (163) connected thereto, and a water collecting trough (174) is connected to the lower part of the side of the transparent curved plate (171) facing the atomizing nozzle (163) connected thereto, and the water collecting trough (174) is communicated with the water tank (161) via a return pipe (175).

9. A cigarette box paperboard strength detection device according to claim 8, characterized in that: A lifting mechanism is provided on the top of the hydraulic box (2) for lifting the cardboard and separating it from the detachable positioning seat (3). The lifting mechanism comprises a U-shaped plate (181) connected to the top of the hydraulic box (2). The U-shaped plate (181) is located outside the detachable positioning seat (3). Both sides of the U-shaped plate (181) are provided with lifting plates (182) capable of lifting and lowering and for lifting the cardboard and separating it from the detachable positioning seat (3). A spring (183) is connected between the bottom of the lifting plate (182) and the lower part of the U-shaped plate (181).

10. A cigarette box paperboard strength detection device according to claim 9, characterized in that: A distance sensor (21) is installed on the top of the hydraulic box (2), and the distance sensor (21) is located outside the detachable positioning seat (3) and inside the U-shaped plate (181).

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