A detection device for quickly identifying and detecting the quality of paperboard

Abstract

The utility model discloses a kind of detection devices for quickly identifying, detecting paperboard material quality, it is related to paperboard material detection technical field, including detection table, detection table has transmission piece, for horizontal and not stop car guide and send paperboard to be detected;Optical detection module has multiple linear arrangement cameras, camera lens is perpendicular to the distribution of detection table;Support frame bottom end is equipped with edge compression strength detection piece, support frame height can be adjusted, and then adjust edge compression strength detection piece to be rolled in the two side barfs of paperboard to be detected upper end face;Support frame is also equipped with mechanics detection piece, and mechanics detection piece has electric cylinder and multiple linear distribution breaking resistance test head set in electric cylinder telescopic end, and breaking resistance test head is used for instant vertical action on paperboard to be detected.The utility model integrates optical detection, breaking detection and edge compression strength detection, solve the problem that traditional paperboard detection relies on artificial visual, mechanical pressure test or single sensor detection, low efficiency, large error.

Description

Technical Field

[0001] This utility model relates to the field of cardboard material testing technology, specifically a testing device for quickly identifying and testing the quality of cardboard materials. Background Technology

[0002] Monitoring cardboard materials is crucial for ensuring product quality, production safety, cost control, regulatory compliance, and enhancing corporate competitiveness. As a packaging material, cardboard must possess sufficient strength (such as burst strength, edge crush resistance, and puncture resistance) to protect its contents. For example, when transporting electronic products, insufficient burst strength of the cardboard can lead to packaging breakage and product damage; uncontrolled moisture content in food packaging can cause mold or deformation. Testing ensures that the strength of the cardboard, once produced as finished cartons, meets the requirements of the specific application scenario.

[0003] When testing the bursting strength of cardboard, traditional cardboard testing relies on manual visual inspection, mechanical pressure testing, or single sensor detection, which has problems of low efficiency and large error. Summary of the Invention

[0004] The purpose of this invention is to provide a detection device for quickly identifying and testing the quality of cardboard materials, so as to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a detection device for quickly identifying and detecting the quality of cardboard material, including a detection table, wherein the detection table has a transmission component for laterally and non-stop guiding the cardboard to be tested; An optical inspection module having multiple cameras arranged in a linear fashion, the lenses of which are distributed perpendicular to the inspection stage; A support frame is provided at the bottom of the support frame, and the height of the support frame is adjustable, thereby adjusting the edge crush strength detection element to roll on the upper surface of the two side ribs of the paperboard to be tested. The support frame is also equipped with a mechanical testing component, which has an electric cylinder and multiple linearly distributed bursting test heads located at the extension and retraction end of the electric cylinder. The bursting test heads are used to apply instantaneous vertical force to the cardboard to be tested.

[0006] In a further embodiment, a side support platform is horizontally welded to the side wall of the detection platform. A guide rod is vertically fixed to the upper surface of the side support platform. The upper end of the guide rod is bent to form a bent connection end. A mounting seat is fixed to the end of the bent connection end. A mounting groove is provided on the side wall of the mounting seat. A hanging plate is horizontally fixed in the mounting groove. Multiple linearly distributed cameras are installed on the bottom wall of the hanging plate and span across the top of the detection platform.

[0007] In a further embodiment, a servo motor is also installed on the upper surface of the side support platform. The output end of the servo motor is connected to a threaded rod. The top end of the threaded rod is rotatably connected to the bottom wall of the mounting base. One end of the support frame has a threaded hole and a guide hole respectively. The threaded hole is threadedly connected to the threaded rod, and the guide hole is used for the guide rod to slide through.

[0008] In a further embodiment, the other end of the support frame extends into two extensions that cross over the detection platform, with a distance between the two extensions, and multiple linearly distributed cameras are located above the two extensions.

[0009] In a further embodiment, the edge pressure strength detection component includes four connecting rods, with a collar fixed at the upper end of each connecting rod, and a roller rotatably mounted on the bottom side wall of each connecting rod. A pressure sensor with a ring structure is embedded in the radial outer wall of the roller. Two connecting rods form a group. The collars of the two connecting rods in one group are threadedly connected to a threaded adjusting rod, and the internal threads of the two collars rotate in opposite directions. A sliding adjusting groove is provided on the bottom wall of one of the extension ends. The threaded adjusting rod is inserted from the end of the extension end and rotates to connect with the inner wall of the sliding adjusting groove. The top wall of the connecting rod slides against the bottom wall of the extension end.

[0010] In a further embodiment, a sliding rod is slidably inserted into the collar of another set of two connecting rods, and a sliding adjustment groove is also provided on the bottom wall of the other extension end. The two ends of the sliding rod are rotatably connected to the opposite side walls inside the sliding adjustment groove, and the top wall of the connecting rod is slidably attached to the bottom wall of the extension end. A linkage rod is fixed between two connecting rods located in the same vertical plane below the two extension ends.

[0011] In a further embodiment, an extension rod is provided laterally on one long side wall of one of the extension ends, the electric cylinder is fixedly installed at the end of the extension rod, and a crossbeam is laterally fixed at the telescopic end of the electric cylinder, and multiple linearly distributed burst test heads are fixed on the bottom wall of the crossbeam.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This invention is a detection device for quickly identifying and testing the quality of cardboard materials. It integrates optical detection, burst strength detection, and edge crush strength detection into one device, solving the problems of low efficiency, large errors, and inability to comprehensively evaluate material performance caused by traditional cardboard detection methods that rely on manual visual inspection, mechanical pressure testing, or single sensor detection. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of an embodiment of the present utility model; Figure 2 This is an embodiment of the present utility model. Figure 1Enlarged view of the structure at point A; Figure 3 This is a schematic diagram of the assembly structure of the support frame, mechanical testing component, and edge crush strength testing component according to an embodiment of the present utility model; Figure 4 This is a schematic diagram of the edge crush strength testing component according to an embodiment of the present invention; Figure 5 This is a partial sectional view of the support frame according to an embodiment of the present utility model; Figure 6 This is an embodiment of the present utility model. Figure 5 Enlarged view of the structure at point B in the middle.

[0014] In the diagram: 1. Testing platform; 11. Boss; 2. Threaded rod; 3. Guide rod; 31. Mounting base; 4. Lifting plate; 5. Support frame; 51. Connecting rod; 52. Roller; 53. Collar; 54. Threaded adjusting rod; 55. Sliding adjusting groove; 6. Belt; 7. Electric cylinder; 71. Crossbeam; 72. Bursting strength test head. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] This embodiment provides a detection device for quickly identifying and detecting the quality of cardboard materials, including a detection table 1, such as... Figure 1 As shown, the inspection table 1 has a conveyor system, which includes a belt 6 and drive shafts rotatably mounted at both ends within the belt 6. One end of the drive shaft is connected to a motor, which is embedded within the inspection table. The motor is a variable frequency motor, providing a conveying speed of 0.5-5 m / s to provide rotational power to the drive shaft for lateral, non-stop conveying of the cardboard to be inspected. To prevent the cardboard from sinking during inspection due to the softness of the belt 6, the inspection table 1 is provided with a protrusion 11 located on the inner top wall of the belt 6, such as... Figure 2 As shown, by using the boss 11 to support the inner top wall of the belt 6, the support height of the upper end face of the belt 6 remains unchanged during the conveying process, thus not affecting the mechanical testing and pressure strength testing of the cardboard being conveyed.

[0017] An optical inspection module was also disclosed. This module has multiple cameras arranged linearly. A side support platform is horizontally welded to the side wall of the inspection table 1. A guide rod 3 is vertically fixed to the upper surface of the side support platform. The upper end of the guide rod 3 is bent to form a bent connecting end. A mounting base 31 is fixed to the end of the bent connecting end. A mounting groove is provided on the side wall of the mounting base 31. A hanging plate 4 is horizontally fixed in the mounting groove. Multiple linearly distributed cameras are mounted on the bottom wall of the hanging plate 4, spanning above the inspection table 1. Figure 1 As shown, the camera (resolution ≥ 5 μm / pixel) is fixed 300 mm directly above the inspection platform 1, with the lens perpendicular to the platform. The lens captures images of the cardboard surface, detecting wrinkles, holes, and oil stains. Cardboard surface images are acquired at 5000 fps, and the following defects are identified using image processing algorithms (such as Canny edge detection and Hough transform): Holes: Penetrating defects with a diameter ≥ 1 mm. Wrinkles: Continuous wrinkles with a surface undulation height ≥ 0.5 mm. Oil stains: Areas with abnormal reflectivity (segmented using grayscale thresholding).

[0018] like Figure 1 , Figure 3 and Figure 4 As shown, a support frame 5 has an edge crush strength testing element at its bottom. The height of the support frame 5 is adjustable, allowing the edge crush strength testing element to roll against the upper surfaces of the two side edges of the cardboard to be tested. Specifically, a servo motor is also installed on the upper surface of the side support platform. The output end of the servo motor is connected to a threaded rod 2. The top end of the threaded rod 2 is rotatably connected to the bottom wall of the mounting base 31. One end of the support frame 5 has a threaded hole and a guide hole. The threaded hole is threadedly connected to the threaded rod 2, and the guide hole is used for the guide rod 3 to slide through. Meanwhile, as... Figure 3 , Figure 4 and Figure 5 As shown, the edge pressure strength testing component includes four connecting rods 51. A collar 53 is fixed to the upper end of the connecting rod 51, and a roller 52 is rotatably mounted on the bottom side wall of the connecting rod 51. A pressure sensor with a ring structure is embedded in the radial outer wall of the roller 52.

[0019] The cardboard is conveyed laterally from one end to the other by belt 6. A servo motor powers the rotation of the threaded rod 2, allowing the support frame 5 to adjust its height synchronously. This ensures that the rollers 52 can press against the edges of the cardboard. Belt 6 conveys the cardboard at a constant speed (50 mm / s), and the rollers 52 press against the edges of the cardboard. Pressure sensors record the pressure signals in real time. The edge crush strength is calculated (formula: edge crush strength = maximum pressure / edge width).

[0020] To inspect more cardboard sizes, the distance between the bottom rollers 52 of the two connecting rods 51 in the same group needs to be adjusted according to different cardboard sizes. Therefore, the two connecting rods 51 are grouped together, with the collars 53 of the two connecting rods 51 in one group threadedly connected to a threaded adjusting rod 54. The internal threads of the two collars 53 rotate in opposite directions, and a sliding adjusting groove 55 is provided on the bottom wall of one of the extended ends. Figure 6 As shown, the threaded adjusting rod 54 is inserted into the inner wall of the sliding adjusting groove 55 from the end of the extension end and rotated. The top wall of the connecting rod 51 slides against the bottom wall of the extension end. Depending on the size of the cardboard to be tested, the threaded adjusting rod 54 is rotated by hand to adjust the two connecting rods 51 to move closer or further apart, thereby adjusting the distance between the two rollers 52 to ensure that the two rollers 52 can simultaneously and accurately roll on the upper surfaces of the two side ribs of the cardboard.

[0021] Another set of two connecting rods 51 have a sliding rod slidably inserted into their collars 53. A sliding adjustment groove 55 is also provided on the bottom wall of the other extension end. The two ends of the sliding rod are rotatably connected to the opposite side walls within the sliding adjustment groove 55. The top wall of the connecting rod 51 slides against the bottom wall of the extension end. A linkage rod is fixed between the two connecting rods 51 located in the same vertical plane below the two extension ends. Adjustment is achieved by rotating the threaded adjustment rod 54. Figure 4 When the connecting rods 51 of the left side move closer or further apart, the other two connecting rods 51 can be adjusted to move closer or further apart synchronously via the linkage rod. The adjustment operation is simple and convenient.

[0022] It should be noted that two extensions extend from the other end of the support frame 5, spanning above the inspection table 1. There is a distance between the two extensions, and multiple linearly distributed cameras are positioned above the area between the two extensions. This ensures that the support frame 5 does not obstruct the camera lenses from vertically photographing the cardboard being conveyed laterally by the belt 6.

[0023] The support frame 5 is also equipped with a mechanical testing component, which includes an electric cylinder 7 and multiple linearly distributed bursting strength test heads 72 located at the extension and retraction end of the electric cylinder 7. The bursting strength test heads 72 are used to apply instantaneous vertical force to the cardboard to be tested. Specifically, as shown... Figure 1 and Figure 3 As shown, one of the extension ends has a transverse extension rod on one long side wall. An electric cylinder 7 is fixedly installed at the end of the extension rod. A crossbeam 71 is transversely fixed at the telescopic end of the electric cylinder 7. Multiple linearly distributed bursting strength test heads 72 are fixed on the bottom wall of the crossbeam 71. The electric cylinder 7 provides downward pressure to the bursting strength test heads 72. A pressure sensor is also embedded in the end of the bursting strength test head 72, that is, dynamic pressure (adjustable from 0-20 kPa) is applied to the surface of the cardboard. The maximum pressure value at the moment of cardboard rupture is recorded by the pressure sensor, and the bursting strength is calculated (formula: bursting strength = rupture pressure / test area).

[0024] In summary, this design integrates optical inspection, burst strength inspection, and edge crush strength inspection into one unit, solving the problems of low efficiency, large errors, and inability to comprehensively evaluate material performance caused by traditional paperboard inspection relying on manual visual inspection, mechanical pressure testing, or single sensor inspection.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A detection device for rapidly identifying and testing the quality of cardboard materials, characterized in that, It includes a testing platform (1) and an optical testing module. The testing platform (1) has a transmission component for horizontally and non-stoply guiding the cardboard to be tested. The optical testing module has multiple cameras arranged in a linear arrangement, and the lenses of the cameras are distributed perpendicular to the testing platform (1). It also includes a support frame (5), the bottom end of which is provided with an edge crush strength detection element. The height of the support frame (5) is adjustable, thereby adjusting the edge crush strength detection element to roll on the upper surface of the two sides of the paperboard to be tested. The support frame (5) is also provided with a mechanical testing component. The mechanical testing component has an electric cylinder (7) and multiple bursting test heads (72) arranged linearly at the telescopic end of the electric cylinder (7). The bursting test heads (72) are used to act vertically on the paperboard to be tested instantaneously.

2. The detection device for rapidly identifying and detecting the quality of cardboard material according to claim 1, characterized in that, The side wall of the testing platform (1) is horizontally welded with a side support platform. A guide rod (3) is vertically fixed on the upper surface of the side support platform. The upper end of the guide rod (3) is bent to form a bent connection end. A mounting seat (31) is fixed at the end of the bent connection end. A mounting groove is provided on the side wall of the mounting seat (31). A hanging plate (4) is horizontally fixed in the mounting groove. Multiple linearly distributed cameras are installed on the bottom wall of the hanging plate (4) and span across the top of the testing platform (1).

3. The detection device for rapidly identifying and detecting the quality of cardboard material according to claim 2, characterized in that, A servo motor is also installed on the upper surface of the side support platform. The output end of the servo motor is connected to a threaded rod (2). The top end of the threaded rod (2) is rotatably connected to the bottom wall of the mounting base (31). One end of the support frame (5) has a threaded hole and a guide hole respectively. The threaded hole is threadedly connected to the threaded rod (2), and the guide hole is used for the guide rod (3) to slide through.

4. The detection device for rapidly identifying and detecting the quality of cardboard material according to claim 3, characterized in that, The other end of the support frame (5) extends to two extensions that cross the top of the detection table (1), with a distance between the two extensions, and multiple linearly distributed cameras located above the two extensions.

5. The detection device for rapidly identifying and detecting the quality of cardboard material according to claim 4, characterized in that, The edge pressure strength testing component includes four connecting rods (51). The upper end of the connecting rod (51) is fixed with a collar (53). The bottom side wall of the connecting rod (51) is rotatably mounted with a roller (52). The outer radial wall of the roller (52) is embedded with a pressure sensor distributed in a ring structure. Two connecting rods (51) form a group. The collars (53) of the two connecting rods (51) in one group are threadedly connected to a threaded adjusting rod (54), and the internal threads of the two collars (53) are rotated in opposite directions. A sliding adjusting groove (55) is provided on the bottom wall of one of the extension ends. The threaded adjusting rod (54) is inserted from the end of the extension end and rotatedly connected to the inner wall of the sliding adjusting groove (55). The top wall of the connecting rod (51) slides against the bottom wall of the extension end.

6. The detection device for rapidly identifying and detecting the quality of cardboard material according to claim 5, characterized in that, Another set of two connecting rods (51) have a sliding rod inserted into the collar (53), and the bottom wall of the other extension end is also provided with a sliding adjustment groove (55). The two ends of the sliding rod are rotatably connected to the opposite side walls inside the sliding adjustment groove (55), and the top wall of the connecting rod (51) is slidably attached to the bottom wall of the extension end. A linkage rod is fixed between two connecting rods (51) located in the same vertical plane below the two extension ends.

7. The detection device for rapidly identifying and detecting the quality of cardboard material according to claim 6, characterized in that, One of the extension ends has an extension rod on one of its long side walls. The electric cylinder (7) is fixedly installed at the end of the extension rod. The telescopic end of the electric cylinder (7) is fixed with a crossbeam (71). Multiple burst test heads (72) arranged in a linear distribution are fixed on the bottom wall of the crossbeam (71).

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