Defect detection equipment

Abstract

The utility model relates to the technical field of printing, and particularly discloses flaw detection equipment which comprises a machine table, a first belt line, a second belt line, a third belt line, a visual detection mechanism, an unqualified product recovery mechanism and a qualified product recovery mechanism. One end of the third belt line is rotationally connected to the conveying tail end of the first belt line, lifting driving mechanisms are obliquely arranged below the two sides of the other end of the third belt line correspondingly, and the two lifting driving mechanisms are both hinged to the second belt line and the third belt line; the visual detection mechanism is erected above the conveying tail end of the first belt line and used for detecting flaws on the surfaces of products. The unqualified product recovery mechanism is arranged below the second belt line and is used for receiving unqualified products unloaded by the third belt line; and the qualified product recovery mechanism is arranged at the conveying tail end of the second belt line and used for receiving qualified products unloaded by the second belt line, and compared with traditional flaw detection equipment, operation is easy, and the working efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of printing technology, and more particularly to a defect detection device. Background Technology

[0002] Packaging boxes are essential for packaging all kinds of products, making them indispensable consumables. The outer surface of packaging boxes is often printed with various texts, letters, and patterns to identify product information, serve as warnings, and allow businesses to use these markings for advertising, increasing customer awareness of their products.

[0003] After the printed packaging box cardboard is cut, the printing effect needs to be checked to see if there are any missing areas, whether the printed markings are clear, and whether there are any defects such as ghosting.

[0004] Existing testing equipment is not convenient for online processing when detecting defects in printed packaging paperboard. There are generally two processing methods: one is to mark the defects and then sort them into qualified and unqualified products; the other is to stop the machine on-site and remove the unqualified products with defects. Both of these processing methods are cumbersome and affect production efficiency.

[0005] To address the aforementioned problems, this application discloses a defect detection device. Utility Model Content

[0006] To overcome the shortcomings of the prior art, this application discloses a defect detection device.

[0007] To achieve the above objectives, the technical solution adopted in this application is as follows: a defect detection device, comprising a machine base, a first conveyor belt, a second conveyor belt, a third conveyor belt, a visual inspection mechanism, a non-conforming product recycling mechanism, and a conforming product recycling mechanism; the first and second conveyor belts are respectively arranged on both sides above the machine base along a first direction; one end of the third conveyor belt is rotatably connected to the conveying end of the first conveyor belt, and the other end is provided with lifting drive mechanisms inclined on both sides below, and both lifting drive mechanisms are hinged to the second and third conveyor belts; the visual inspection mechanism is mounted above the conveying end of the first conveyor belt for detecting defects on the product surface; the non-conforming product recycling mechanism is located below the second conveyor belt for receiving non-conforming products unloaded from the third conveyor belt; the conforming product recycling mechanism is located at the conveying end of the second conveyor belt for receiving conforming products unloaded from the second conveyor belt.

[0008] More preferably, a first gantry is erected above the first belt conveyor along the second direction, and a bidirectional drive module is provided below the crossbeam of the first gantry. The two drive parts of the bidirectional drive module are provided with two baffles arranged in a figure-eight shape, and the two baffles are in contact with the first belt conveyor.

[0009] More preferably, the lifting drive mechanism is a linear cylinder.

[0010] More preferably, the visual inspection mechanism includes a second gantry, a visual inspection camera, and a light box. The second gantry is mounted above the first conveyor belt along a second direction near the conveyor end of the first conveyor belt. The visual inspection camera is located at the bottom of the crossbeam of the second gantry, and the light box is connected between the two legs of the second gantry below the visual inspection camera.

[0011] More preferably, the defective product recycling mechanism includes a servo linear module, a collection box, and a first counter. The servo linear module is mounted on the machine platform below the second belt conveyor along the second direction. The collection box is connected to the servo linear module. A vertical plate is provided on one side of the collection box, and the first counter is installed on the inner side of the vertical plate.

[0012] More preferably, the qualified recycling mechanism includes a fourth belt conveyor, an L-shaped stop, and a second counter. The fourth belt conveyor is arranged on the machine platform along a second direction at the conveying end of the second belt conveyor. The L-shaped stop is arranged above the conveying start of the fourth belt conveyor, facing the second belt conveyor. The second counter is arranged above the inner side of any one side of the L-shaped stop.

[0013] More preferably, the height of the fourth belt conveyor is lower than the height of the second belt conveyor, and the height of the L-shaped stop is higher than the height of the second belt conveyor.

[0014] This application achieves the following beneficial effects:

[0015] This application enables the slit packaging cardboard to be conveyed by the first belt conveyor to the visual inspection mechanism for defect detection. Based on the detection result, it controls whether two lifting drive mechanisms lift or lower, so that the defective product recycling mechanism and the qualified product recycling mechanism can recycle the detected products accordingly. Compared with traditional inspection equipment, it is simple to operate and improves work efficiency.

[0016] Other features and advantages of this application will be set forth in the following description and will be apparent in part from the description, or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures shown in the description and the accompanying drawings. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the disclosure of this application and, together with the specification, serve to explain the principles of this disclosure.

[0018] Figure 1 This is a schematic diagram of the overall structure disclosed in this application;

[0019] Figure 2 This is a schematic diagram of the side structure disclosed in this application;

[0020] In the diagram: 10, machine platform; 20, first conveyor belt; 30, second conveyor belt; 40, third conveyor belt; 50, lifting drive mechanism; 60, vision inspection mechanism; 61, second gantry; 62, vision inspection camera; 63, light box; 70, non-conforming product recycling mechanism; 71, servo linear module; 72, collection box; 73, upright plate; 74, first counter; 80, conforming product recycling mechanism; 81, fourth conveyor belt; 82, L-shaped stop; 83, second counter; 90, first gantry; 100, bidirectional drive module; 110, baffle. Detailed Implementation

[0021] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0022] In the description of this application, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the component or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0023] Example

[0024] To address the problems of cumbersome operation and low efficiency in existing technologies for detecting printing defects on packaging cardboard, this paper refers to... Figure 1 and Figure 2As shown, this application discloses a defect detection device, including a machine base 10, a first conveyor belt 20, a second conveyor belt 30, a third conveyor belt 40, a visual inspection mechanism 60, a defective product collection mechanism 70, and a qualified product collection mechanism 80. The first conveyor belt 20 and the second conveyor belt 30 are respectively arranged on both sides above the machine base 10 along a first direction. One end of the third conveyor belt 40 is rotatably connected to the conveying end of the first conveyor belt 20, and the other end is inclinedly provided with lifting drive mechanisms 50 on both sides below, and both lifting drive mechanisms 50 are hinged to the second conveyor belt 30 and the third conveyor belt 40. The visual inspection mechanism 60 is mounted above the conveying end of the first conveyor belt 20 for detecting defects on the product surface. The defective product collection mechanism 70 is located below the second conveyor belt 30 for receiving defective products unloaded from the third conveyor belt 40. The qualified product collection mechanism is located at the conveying end of the second conveyor belt 30 for receiving qualified products unloaded from the second conveyor belt 30.

[0025] Based on the above structure, the general operating principle of this application will be briefly explained below:

[0026] The defect detection device of this application is placed in the output section of the slitting equipment. The packaging cardboard cut by the slitting equipment falls into the first conveyor belt 20. Under the conveying of the first conveyor belt 20, the packaging cardboard is visually inspected by the vision inspection mechanism 60 when it passes through the vision inspection mechanism 60 to determine whether there are missing printing areas, whether the printed markings are clear, and whether there are defects such as ghosting in the printing. Based on the inspection results of the vision inspection mechanism 60, if the packaging cardboard fails the inspection, when the packaging cardboard is sent from the first conveyor belt 20 to the second conveyor belt 30, the two lifting drive mechanisms 50 will drive one side of the third conveyor belt 40 to descend and tilt. After that, the third conveyor belt 40 will convey the packaging cardboard to the defective product recycling mechanism 70 for recycling. If the packaging cardboard passes the inspection, when the packaging cardboard is sent from the first conveyor belt 20 to the second conveyor belt 30, the two lifting drive mechanisms 50 will not operate, and the third conveyor belt 40 will send the packaging cardboard to the second conveyor belt 30. Finally, the second conveyor belt 30 will send the packaging cardboard to the qualified product recycling mechanism 80 for stacking.

[0027] In addition to the above structure, in order to achieve precise positioning of the slit packaging cardboard and enable the vision inspection mechanism 60 to accurately detect defects in the printed parts, this application provides a first gantry 90 above the first conveyor belt 20 along the second direction. A bidirectional drive module 100 is provided below the crossbeam of the first gantry 90. Two baffles 110 arranged in a figure-eight shape are provided on the two drive parts of the bidirectional drive module 100, and the two baffles 110 are in contact with the first conveyor belt 20. Before use, according to the width of the packaging cardboard, the bidirectional drive module 100 drives the two baffles 110 to move closer or further apart to adjust the spacing until the corresponding width requirement of the packaging cardboard is met. Furthermore, by arranging the two baffles 110 in a figure-eight shape, the slit packaging cardboard can be quickly fed in.

[0028] It should be noted that the bidirectional drive module 100 can be either a bidirectional drive cylinder or a bidirectional servo screw module in actual use.

[0029] For example, the lifting drive mechanism 50 of this application is a linear cylinder, or other types of lifting drive mechanisms 50 may be used in this technical field, such as electric cylinders or hydraulic cylinders.

[0030] In one specific embodiment, the visual inspection mechanism 60 of this application includes a second gantry 61, a visual inspection camera 62, and a light box 63. The second gantry 61 is mounted above the first conveyor belt 20 along a second direction near the conveyor end of the first conveyor belt 20. The visual inspection camera 62 is located at the bottom of the crossbeam of the second gantry 61. The light box 63 is connected between the two legs of the second gantry 61 below the visual inspection camera 62. When the first conveyor belt 20 drives the packaging cardboard to the area below the light box 63, the light emitted by the light box 63 will illuminate the packaging cardboard. In this case, the visual inspection camera 62 will take pictures of the printed parts of the packaging cardboard through the light box 63 and send them to an external image processing system to analyze whether there are any defects in the printed parts.

[0031] In one specific implementation, the non-conforming product recycling mechanism 70 of this application includes a servo linear module 71, a collection box 72, and a first counter 74. The servo linear module 71 is arranged on the machine base 10 below the second conveyor belt 30 along the second direction. The collection box 72 is connected to the servo linear module 71. A vertical plate 73 is provided on one side of the collection box 72. The first counter 74 is installed inside the vertical plate 73. In actual use, the servo linear module 71 sends the empty collection box 72 into the area below the second conveyor belt 30, corresponding to the angle of the third conveyor belt 40 in its inclined state. When the second conveyor belt 30 unloads the packaging cardboard that has been detected as non-conforming, the first counter 74 counts it and then it falls into the collection box 72. When the number of non-conforming cardboard in the collection box 72 reaches a set value, the servo linear module 71 will drive the collection box 72 to move out of the area below the second conveyor belt 30. At this time, the operator can take out the non-conforming packaging cardboard.

[0032] In one specific implementation, the qualified recycling mechanism of this application includes a fourth belt conveyor 81, an L-shaped stop 82, and a second counter 83. The fourth belt conveyor 81 is arranged on the machine platform 10 along the second direction at the conveying end of the second belt conveyor 30. The L-shaped stop 82 is arranged above the conveying start of the fourth belt conveyor 81 facing the second belt conveyor 30. The second counter 83 is arranged above the inner side of any one side of the L-shaped stop 82.

[0033] Furthermore, the height of the fourth conveyor belt is lower than that of the second conveyor belt 30, while the height of the L-shaped stop 82 is higher than that of the second conveyor belt 30. When the second conveyor belt 30 unloads the packaging cardboard that has passed the inspection, the packaging cardboard will fall onto the fourth conveyor belt 81. During this process, the L-shaped stop 82 will block it, and the second counter 83 will count the falling qualified packaging cardboard. When the number counted by the second counter 83 reaches the set value, the fourth conveyor belt will send out the stacked packaging cardboard. At this time, the operator will take away the stacked qualified packaging cardboard.

[0034] In the description of this specification, the references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] The above embodiments are only for illustrating the technical concept and features of this application, and are intended to enable those skilled in the art to understand the content of this application and implement it accordingly. They should not be used to limit the scope of protection of this application. All equivalent changes or modifications made in accordance with the spirit and essence of this application should be included within the scope of protection of this application.

Claims

1. A defect detection device, characterized in that, The system includes a machine base (10), a first conveyor belt (20), a second conveyor belt (30), a third conveyor belt (40), a visual inspection mechanism (60), a defective product recycling mechanism (70), and a qualified product recycling mechanism (80). The first conveyor belt (20) and the second conveyor belt (30) are respectively arranged on the upper sides of the machine base (10) along a first direction. One end of the third conveyor belt (40) is rotatably connected to the conveying end of the first conveyor belt (20), and the other end is provided with lifting drive mechanisms (50) at an angle on both sides below, and both lifting drive mechanisms (50) are hinged to the second conveyor belt (30) and the third conveyor belt (40). The visual inspection mechanism (60) is mounted above the conveying end of the first conveyor belt (20) to detect defects on the surface of the product. The defective product recycling mechanism (70) is located below the second conveyor belt (30) to receive defective products unloaded from the third conveyor belt (40). The qualified product recycling mechanism is located at the conveying end of the second conveyor belt (30) to receive qualified products unloaded from the second conveyor belt (30).

2. The defect detection device according to claim 1, characterized in that, A first gantry (90) is mounted above the first belt conveyor (20) along the second direction. A bidirectional drive module (100) is provided below the crossbeam of the first gantry (90). Two baffles (110) are arranged in a figure-eight shape on the two drive parts of the bidirectional drive module (100), and the two baffles (110) are in contact with the first belt conveyor (20).

3. The defect detection device according to claim 1, characterized in that, The lifting drive mechanism (50) is a linear cylinder.

4. The defect detection device according to claim 1, characterized in that, The visual inspection mechanism (60) includes a second gantry (61), a visual inspection camera (62), and a light box (63). The second gantry (61) is mounted above the first conveyor belt (20) along a second direction near the conveying end of the first conveyor belt (20). The visual inspection camera (62) is located at the bottom of the crossbeam of the second gantry (61). The light box (63) is connected between the two legs of the second gantry (61) below the visual inspection camera (62).

5. The defect detection device according to claim 1, characterized in that, The defective product recycling mechanism (70) includes a servo linear module (71), a collection box (72) and a first counter (74). The servo linear module (71) is set on the machine base (10) below the second belt (30) along the second direction. The collection box (72) is connected to the servo linear module (71). A vertical plate (73) is provided on one side of the collection box (72). The first counter (74) is installed on the inner side of the vertical plate (73).

6. The defect detection device according to claim 1, characterized in that, The qualified recycling mechanism includes a fourth belt conveyor (81), an L-shaped stop (82), and a second counter (83). The fourth belt conveyor (81) is set on the machine platform (10) along the second direction at the conveying end of the second belt conveyor (30). The L-shaped stop (82) is set above the conveying start of the fourth belt conveyor (81) facing the second belt conveyor (30). The second counter (83) is set above the inner side of any one side of the L-shaped stop (82).

7. A defect detection device according to claim 6, characterized in that, The height of the fourth belt is lower than the height of the second belt (30), and the height of the L-shaped stop (82) is higher than the height of the second belt (30).

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