Carton printing pattern detection equipment and method
By using an electronically controlled adjustment mechanism, the friction force of the carton printing pattern detection equipment can be continuously adjusted and complex scenarios can be simulated. This solves the problems of stepless friction force adjustment and the influence of environmental factors in the existing technology, and improves the detection accuracy and operating efficiency.
Patent Information
- Application Number
- CN202511972029.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-25
- Publication Date
- 2026-01-27
AI Technical Summary
Existing cardboard box printing pattern inspection equipment cannot achieve stepless adjustment of friction force, is greatly affected by environmental factors, cannot simulate complex working conditions, and has high maintenance costs.
An electronically controlled adjustment mechanism is adopted, including a linear telescopic mechanism, a guide rail, an inclination sensor, and a distance sensor. The friction force is adjusted in real time through feedback from the detection module, and the force is corrected by trigonometric functions to achieve continuous adjustment of friction force and simulation of complex scenarios.
It improves the accuracy of friction adjustment and the authenticity of detection, reduces interference from environmental factors, simplifies the operation process, and reduces maintenance costs.
Smart Images
Figure CN121409784A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a device and method for detecting printed patterns on cardboard boxes. Background Technology
[0002] The core principle of corrugated box printing pattern testing equipment in testing the abrasion resistance of printed patterns is to simulate actual friction conditions (such as transportation stacking, hand touch, etc.) by applying constant pressure and periodic frictional motion to the sample surface, quantifying the degree of ink layer wear (such as discoloration area, residual rate) to evaluate abrasion resistance. It mainly includes a testing mechanism, loading mechanism, power system, and data acquisition module. The loading mechanism adjusts the friction force by manually adding or removing weights. Some automated equipment (such as the American Sutherland 2000) uses a servo motor to drive the friction head, but pressure adjustment still relies on weight combinations, making continuous stepless adjustment impossible. Although the weight loading system has the advantages of simple structure and low cost, its adjustment method has the following technical defects: (1) The adjustment is discontinuous and cannot achieve stepless adjustment. Discrete pressure levels: The weights need to be stacked in fixed mass (e.g., 100g, 200g), which means that the friction force can only be switched between preset levels (e.g., 0.5N, 1.0N, 1.5N), making it impossible to accurately match the continuous friction force requirements of different materials (e.g., soft films require dynamic adjustment of 0.3-0.7N). Low adjustment efficiency: Each time the weight is changed, the machine needs to be stopped, which takes several minutes and affects the efficiency of batch testing.
[0003] (2) Environmental factors interfere with accuracy Weight mass drift: Changes in temperature and humidity can cause weights to absorb moisture or oxidize, resulting in a mass error of up to ±0.5% (e.g., a 500g weight may actually become 498-502g), which directly affects the accuracy of friction force calibration. Accumulated mechanical wear: Long-term contact between the weight and the hook causes surface wear, which further aggravates the quality deviation.
[0004] (3) Unable to simulate complex working conditions Static pressure limitations: Traditional weights can only provide constant positive pressure and cannot simulate dynamic pressure changes in actual transportation (such as instantaneous impact force or vibration pressure fluctuations when cardboard boxes are stacked).
[0005] (4) High maintenance costs The calibration of weights is cumbersome: it requires regular calibration using standard weights and the availability of a high-precision balance (accuracy 0.1mg), which increases the laboratory's operation and maintenance costs. Frequent component replacement: Easily worn parts such as weight hooks and guide grooves need to be replaced frequently due to long-term stress and wear. Summary of the Invention
[0006] The purpose of this invention is to provide a cardboard box printing pattern detection device and method that enables stepless electronic adjustment of friction force, in order to solve the above-mentioned technical problems.
[0007] The technical solution of the cardboard box printing pattern inspection device of the present invention is as follows: The cardboard box printing pattern inspection device includes: The machine body includes a horizontally set worktable and a vertically set back plate. The back plate is provided with a horizontally set slide groove, and a lever is slidably assembled in the slide groove. The lower friction table is installed on the worktable; The upper friction platform has friction bodies symmetrically installed at its lower end and a U-shaped groove in the middle. The upper friction platform is fitted onto the lever through the U-shaped groove and abuts against the lower friction platform through the friction bodies. The adjustment mechanism includes a mounting plate horizontally fixed to the back plate, a linear telescopic mechanism vertically mounted in the middle of the mounting plate, a push plate vertically connected to the lower end of the telescopic rod of the linear telescopic mechanism, a guide rail below the push plate, a guide rod vertically connected to the mounting plate, the push plate and the guide rail being guided and slidably sleeved on the guide rod through a guide hole set coaxially, an elastic element connecting the push plate and the mounting plate, a guide groove provided at the lower part of the guide rail, and a guide boss correspondingly provided at the upper part of the upper friction table, the guide boss and the guide groove being guided and slidably engaged; The controller includes a detection module for detecting the pressure applied to the paperboard by the friction element, and the controller controls the movement of the linear telescopic mechanism based on the feedback from the detection module.
[0008] Based on the above scheme, the following improvements are made: an angle sensor is installed on the guide rail to detect the static angle between the guide rail and the horizontal plane.
[0009] Based on the above scheme, the following improvements are made: the detection module includes a distance sensor, which is mounted on the push plate or guide rail to detect the relative displacement between the two.
[0010] Based on the above scheme, the following improvements are made: there are two ranging sensors, which are symmetrically installed at both ends of the guide rail or symmetrically installed at both ends of the push plate.
[0011] Based on the above scheme, further improvements are made as follows: the elastic element is a helical spring, and there are multiple elastic elements, which are evenly distributed between the push plate and the guide rail.
[0012] Based on the above scheme, the following improvements are made: the cross-section of the guide groove and the guide boss is dovetail-shaped or T-shaped.
[0013] Based on the above solution, the following improvements are made: the lower end of the guide rod is connected to the back plate via a positioning strip.
[0014] Based on the above solution, the following improvements are made: the linear telescopic mechanism includes an electric push rod.
[0015] The technical solution of the cardboard box printing pattern detection method of the present invention is as follows: including the following steps: S10. Install an angle sensor on the guide rail to detect the static angle between the guide rail and the horizontal plane; S20. Install and fix the paperboard sample to be tested on the lower friction table, and install and fix the friction paper on the upper friction table and attach it to the friction body; S30. Preset the parameters of friction count, friction speed and friction force on the controller, start the switch, and the linear telescopic mechanism adjusts the friction force applied to the paperboard sample to be tested through telescopic movement. During the adjustment process, the force value signal detected by the detection module is fed back. Combined with the angle value between the guide rail and the horizontal plane detected by the tilt sensor, the vertical component force is calculated using trigonometric functions to correct the vertical force actually applied to the guide rail by the linear telescopic mechanism. S40. After completing the set number of friction tests, remove the friction paper and the test paperboard sample, observe the surface color change on the friction paper and the test paperboard sample, and complete the test.
[0016] Based on the above scheme, further improvements are made as follows: the detection module includes a distance sensor. The distance sensor detects the relative displacement between the push plate and the guide rail, and calculates the elastic force of the elastic element by combining the elastic coefficient of the elastic element. Since the force sensor is relatively large, it is inconvenient to directly install it to detect the pressure on the sample. However, the distance sensor can detect the relative displacement between the push plate and the guide rail, and this relative displacement represents the deformation of the elastic element. The product of the deformation of the elastic element and the coefficient of friction is the magnitude of the elastic force. Therefore, the elastic force of the elastic element can be measured using a small distance sensor. Adding the weight of the relevant components with a fixed value, the corresponding pressure can be calculated.
[0017] The beneficial effects of this application are as follows: Compared with the existing technology of adjusting the weight applied to the sample by combining weights, the cardboard printing pattern detection equipment and method of this application can apply the pressure set on the upper friction stage in a stepless manner through the adjustment mechanism, and the application effect can be fed back through the detection module for timely adjustment, so as to keep the actual applied force as consistent as possible with the set value, thereby improving the force application accuracy. Moreover, it can continuously adjust different applied force values according to different samples and test requirements, thereby adjusting different friction forces, meeting the needs of continuous and stepless adjustment of friction force. Furthermore, since it is no longer limited by gravity, but relies on the detection module for real-time detection, it is not affected by environmental humidity, temperature changes, rust, oxidation and other factors, further improving the force application accuracy and avoiding environmental interference. Moreover, since this application uses an electronic control method to adjust the friction force, it can simulate friction force tests under various complex scenarios, no longer limited by a single friction force value. For example, it can simulate the change of friction force under vibration, thereby realizing friction force detection simulation in more complex scenarios and improving the realism of the test. Furthermore, the entire operation process is completed electronically and controlled by a pre-input program, or the parameters can be temporarily adjusted to change different friction force test schemes, making the operation convenient and quick. Furthermore, by installing an inclination sensor on the guide rail, the inclination angle of the guide rail is detected, avoiding force loss caused by deviation during the vertical sliding of the guide rail. When the guide rail tilts, the direction of the transmitted force changes, and a portion of the horizontal force is lost. By detecting the inclination angle with the inclination sensor, the value of the lost horizontal component can be calculated using trigonometric functions, thereby correcting the actual applied force value and further improving testing accuracy. The inclusion of an elastic element allows the friction element to adapt to the uneven structure of some sample surfaces during contact between the friction paper and the sample surface, ensuring a good fit between the friction paper and the sample. Attached Figure Description
[0018] Figure 1 This is a schematic front view (partial cross-section) of a specific embodiment of the carton printing pattern detection equipment of the present invention. Figure 2 for Figure 1 A magnified view of a section at point A in the middle; Figure 3 for Figure 1 A magnified view of a section at point B in the middle; Figure 4 for Figure 1 Left side view (partial sectional view); Figure 5 for Figure 4 A magnified view of a section at point C; In the diagram: 1-Main body, 11-Workbench, 12-Back plate, 121-Slide groove, 122-Pulley, 13-Support leg, 2-Lower friction table, 21-Workpiece pressure plate, 3-Upper friction table, 31-Friction body, 32-U-shaped groove, 33-Guide boss, 34-Paper pressure plate, 4-Adjustment mechanism, 41-Mounting plate, 42-Linear telescopic mechanism, 43-Push plate, 44-Guide rail, 441-Guide groove, 45-Guide rod, 46-Positioning strip, 47-Elastic element, 5-Distance sensor (detection module), 6-Tilt sensor, 7-Paper sample to be tested, 8-Friction paper, 9-Controller, 10-Control switch. Detailed Implementation
[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, and not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0020] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.
[0021] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0022] The features and performance of the present invention will be further described in detail below with reference to embodiments.
[0023] Specific embodiments of the cardboard box printing pattern detection device of the present invention: as follows Figure 1-5 As shown, the cardboard box printing pattern detection equipment includes a machine body 1, a lower friction table 2, an upper friction table 3, an adjustment mechanism 4, and a controller 9.
[0024] The machine body 1 includes a horizontally arranged workbench 11 and a vertically arranged back plate 12, forming an L-shaped structure. The lower part is provided with four support legs. The back plate 12 is provided with a horizontally arranged slide groove 121. A lever 122 is slidably assembled in the slide groove 121. The lever 122 is driven by a drive device provided behind the back plate 12, which drives the lever 122 to slide back and forth along the slide groove 121.
[0025] The lower friction table 2 is installed on the worktable 11, and workpiece pressure plates 21 are respectively provided at both ends for fixing and clamping the paperboard sample 7 to be tested.
[0026] Friction bodies 31 are symmetrically installed at the lower end of the upper friction platform 3, and a U-shaped groove 32 is provided in the middle. The upper friction platform 3 is sleeved on the lever 122 through the U-shaped groove 32 and abuts against the lower friction platform 2 through the friction bodies 31. The height of the U-shaped groove 32 is relatively high, so that the bottom of the U-shaped groove 32 will not contact the lever 122 during use, so as to prevent the lever 122 from bearing the weight of the upper friction platform 3.
[0027] The adjustment mechanism 4 includes a mounting plate 41 horizontally fixed on the back plate 12. A linear telescopic mechanism 42 is vertically mounted in the middle of the mounting plate 41. The linear telescopic mechanism 42 includes an electric push rod. A push plate 43 is vertically connected to the lower end of the telescopic rod of the linear telescopic mechanism 42. A guide rail 44 is provided below the push plate 43. A guide rod 45 is vertically connected to the mounting plate 41. The push plate 43 and the guide rail 44 are guided and slidably sleeved on the guide rod 45 through a coaxially arranged guide hole. An elastic element 47 is connected between the push plate 43 and the mounting plate 41. A guide groove 441 is provided at the lower part of the guide rail 44. A guide boss 33 is correspondingly provided at the upper part of the upper friction table 3. The guide boss 33 is guided and slidably engaged with the guide groove 441. The cross-section of the guide groove 441 and the guide boss 33 is dovetail-shaped or T-shaped. The elastic element 47 is a helical spring. There are multiple elastic elements 47. This embodiment shows three, which are evenly distributed between the push plate 43 and the guide rail 44. The lower end of the guide rod 45 is connected to the back plate 12 via the positioning strip 46 to prevent the vertical guiding accuracy from being affected by the cantilever of the lower end of the guide rod 45.
[0028] The controller 9 includes a detection module for detecting the pressure applied to the paperboard by the friction body 31. The controller 9 controls the movement of the linear telescopic mechanism 42 based on feedback from the detection module. The detection module includes a distance sensor 5, which is mounted on the push plate 43 or the guide rail 44 to detect the relative displacement between them. There are two distance sensors 5, symmetrically mounted at both ends of the guide rail 44 or symmetrically mounted at both ends of the push plate 43.
[0029] An inclination sensor 6 is installed on the guide rail 44 to detect the static angle between the guide rail 44 and the horizontal plane.
[0030] The cardboard printing pattern detection equipment and method of this application can apply a set pressure to the upper friction stage 3 through the stepless adjustment mechanism 4, and the application effect can be fed back through the detection module for timely adjustment, so as to keep the actual applied force as consistent as possible with the set value, thereby improving the force application accuracy. Moreover, it can continuously adjust different applied force values according to different samples 7 and test requirements, thereby adjusting different friction forces, meeting the requirements of continuous and stepless adjustment of friction force. Furthermore, since it is no longer limited by gravity, but relies on the detection module for real-time detection, it is not affected by environmental humidity, temperature changes, rust, oxidation and other factors, further improving the force application accuracy and avoiding environmental interference. Moreover, since this application uses an electronic control method to adjust the friction force, it can simulate friction force tests under various complex scenarios, no longer limited by a single friction force value. For example, it can simulate the change of friction force under vibration, thereby realizing friction force detection simulation in more complex scenarios and improving the realism of the test. Moreover, the entire operation process is completed electronically and controlled by a pre-input program, or the parameters can be temporarily adjusted to change different friction force test schemes, making the operation convenient and quick. Furthermore, by installing an inclination sensor 6 on the guide rail 44, the inclination angle of the guide rail 44 is detected, avoiding force loss caused by deviation during the vertical sliding of the guide rail 44. When the guide rail 44 tilts, the direction of the transmitted force changes, and a portion of the horizontal force is lost. By detecting the inclination angle using the inclination sensor 6, the lost horizontal component can be calculated using trigonometric functions, thereby correcting the actual applied force value and further improving test accuracy. The elastic element 47 allows the friction body 31 to adapt to the uneven structure of the sample 7 surface during contact between the friction paper 8 and the sample 7, ensuring a good fit between the friction paper 8 and the sample 7.
[0031] A specific embodiment of the cardboard box printing pattern detection method of the present invention is as follows: including the following steps: An inclination sensor 6 is installed on the guide rail 44 to detect the static angle between the guide rail 44 and the horizontal plane; The paperboard sample 7 to be tested is installed and fixed on the lower friction table 2, and the friction paper 8 is installed and fixed on the upper friction table 3 and attached to and covered the friction body 31. The parameters of friction number, friction speed and friction force are preset on the controller 9. The switch is turned on and the linear telescopic mechanism 42 adjusts the friction force applied to the paperboard sample 7 under test through telescopic movement. During the adjustment process, the force value signal detected by the detection module is fed back. Combined with the angle value between the guide rail 44 and the horizontal plane detected by the tilt sensor 6, the vertical component force is calculated by using trigonometric functions to correct the vertical force actually applied to the guide rail 44 by the linear telescopic mechanism 42. After completing the set number of friction tests, remove the friction paper 8 and the test paperboard sample 7, observe the surface color changes on the friction paper 8 and the test paperboard sample 7, and the test is completed.
[0032] The detection module includes a distance sensor 5. The distance sensor 5 detects the relative displacement between the push plate 43 and the guide rail 44, and calculates the elastic force of the elastic element 47 by combining the elastic coefficient of the elastic element 47. Since the force sensor is relatively large, it is inconvenient to directly install it to detect the pressure on the sample 7. However, the distance sensor 5 can detect the relative displacement between the push plate 43 and the guide rail 44, and this relative displacement represents the deformation of the elastic element 47. The product of the deformation of the elastic element 47 and the coefficient of friction is the magnitude of the elastic force. Therefore, the elastic force of the elastic element 47 can be measured using the compact distance sensor 5. Adding the weight of the relevant components with a fixed value, the corresponding pressure can be calculated.
[0033] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present invention shall also be included within the scope of protection of the present invention.
Claims
1. Equipment for inspecting printed patterns on cardboard boxes, including: The machine body includes a horizontally set worktable and a vertically set back plate. The back plate is provided with a horizontally set slide groove, and a lever is slidably assembled in the slide groove. The lower friction table is installed on the worktable; The upper friction platform has friction bodies symmetrically installed at its lower end and a U-shaped groove in the middle. The upper friction platform is fitted onto the lever through the U-shaped groove and abuts against the lower friction platform through the friction bodies. Its characteristic is that it further includes: The adjustment mechanism includes a mounting plate horizontally fixed to the back plate, a linear telescopic mechanism vertically mounted in the middle of the mounting plate, a push plate vertically connected to the lower end of the telescopic rod of the linear telescopic mechanism, a guide rail below the push plate, a guide rod vertically connected to the mounting plate, the push plate and the guide rail being guided and slidably sleeved on the guide rod through a guide hole set coaxially, an elastic element connecting the push plate and the mounting plate, a guide groove provided at the lower part of the guide rail, and a guide boss correspondingly provided at the upper part of the upper friction table, the guide boss and the guide groove being guided and slidably engaged; The controller includes a detection module for detecting the pressure applied to the paperboard by the friction element, and the controller controls the movement of the linear telescopic mechanism based on the feedback from the detection module.
2. The cardboard box printing pattern detection equipment according to claim 1, characterized in that, An angle sensor is installed on the guide rail to detect the static angle between the guide rail and the horizontal plane.
3. The cardboard box printing pattern detection equipment according to claim 1, characterized in that, The detection module includes a distance sensor, which is mounted on a push plate or guide rail to detect the relative displacement between the two.
4. The cardboard box printing pattern detection equipment according to claim 3, characterized in that, There are two ranging sensors, which are symmetrically installed at both ends of the guide rail or at both ends of the push plate.
5. The cardboard box printing pattern detection equipment according to claim 1, characterized in that, The elastic element is a helical spring, and there are multiple elastic elements, which are evenly distributed between the push plate and the guide rail.
6. The cardboard box printing pattern detection equipment according to claim 1, characterized in that, The cross-sections of the guide grooves and guide bosses are dovetail-shaped or T-shaped.
7. The cardboard box printing pattern detection equipment according to claim 1, characterized in that, The lower end of the guide rod is connected to the back plate via a positioning strip.
8. The cardboard box printing pattern detection equipment according to claim 1, characterized in that, The linear telescopic mechanism includes an electric push rod.
9. The detection method using the cardboard box printing pattern detection equipment as described in claim 1, characterized in that, Includes the following steps: S10. Install an angle sensor on the guide rail to detect the static angle between the guide rail and the horizontal plane; S20. Install and fix the paperboard sample to be tested on the lower friction table, and install and fix the friction paper on the upper friction table and attach it to the friction body; S30. Preset the parameters of friction count, friction speed and friction force on the controller, start the switch, and the linear telescopic mechanism adjusts the friction force applied to the paperboard sample to be tested through telescopic movement. During the adjustment process, the force value signal detected by the detection module is fed back. Combined with the angle value between the guide rail and the horizontal plane detected by the tilt sensor, the vertical component force is calculated using trigonometric functions to correct the vertical force actually applied to the guide rail by the linear telescopic mechanism. S40. After completing the set number of friction tests, remove the friction paper and the test paperboard sample, observe the surface color change on the friction paper and the test paperboard sample, and complete the test.
10. The detection method according to claim 9, characterized in that, The detection module includes a distance sensor, which detects the relative displacement between the push plate and the guide rail, and calculates the elastic force of the elastic element by combining the elastic coefficient of the elastic element.