Label detection equipment

Abstract

The utility model discloses label detection equipment which is characterized in that a plurality of negative pressure through holes are formed in a first conveying belt, and a conveying line of the first conveying belt passes through a detection area of the label detection equipment; the negative pressure device is arranged on the back face of the first conveying belt and provides negative pressure for the bearing face of the first conveying belt through the negative pressure through hole. The visual detection device comprises a camera, and the shooting direction of the camera faces the detection area; the second conveying device is located on the downstream side of the first conveying device and comprises a conveying head end close to the first conveying device and a conveying tail end away from the first conveying device. The free end of the swinging device is connected with the second conveying device; the swinging device can drive the conveying tail end to swing up and down between a first position and a second position; the controller is electrically connected with the visual detection device and the swing device. Due to the action of negative pressure, the wood veneer cannot be influenced by environmental factors such as air flow in the moving process, and the shooting effect of the camera and the detection precision of label detection equipment are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of visual detection, and more specifically, to a label detection device. Background Art

[0002] During the production and processing of wooden IC cards, electronic tags are affixed to thin veneer. Multiple electronic tags are arrayed on a single sheet of veneer. After the electronic tags are affixed, the multiple layers of veneer are pressed and then cut. Therefore, if the electronic tags are improperly affixed to the veneer, they will be cut during the cutting process, rendering the resulting IC card unusable. Therefore, the electronic tags' affixation positions must be checked before the multiple layers of veneer are affixed and pressed to prevent them from being misaligned.

[0003] The existing inspection method involves placing veneer with electronic tags on transport equipment. Once the veneer is delivered to the inspection area, visual inspection equipment verifies the tag's position. However, due to the thinness of the veneer, it often appears slightly curled when placed on the transport equipment, preventing the visual inspection equipment from capturing an optimal image, impacting inspection effectiveness.

[0004] Therefore, how to provide a label detection device with better detection effect has become a technical problem that urgently needs to be solved in this field. Utility Model Content

[0005] The purpose of the utility model is to provide a label detection device with better detection effect.

[0006] The utility model provides a label detection device, comprising:

[0007] A first conveying device, the first conveying device includes a first conveyor belt, a plurality of negative pressure through holes are opened on the first conveyor belt, and a conveying route of the first conveyor belt passes through the detection area of the label detection device;

[0008] A negative pressure device is provided on the back of the first conveyor belt and provides negative pressure to the bearing surface of the first conveyor belt through the negative pressure through hole;

[0009] A visual inspection device includes a camera, wherein the camera is directed toward the inspection area;

[0010] a second conveying device, located on the downstream side of the first conveying device, comprising a conveying head end close to the first conveying device and a conveying tail end away from the first conveying device;

[0011] a swing device, the free end of which is connected to the second conveying device, and the swing device can drive the transport tail end to swing up and down between the first position and the second position;

[0012] The controller is electrically connected to the visual detection device and the swing device respectively.

[0013] Optionally, the visual inspection device further includes a fill light, and the illumination direction of the fill light is toward the inspection area.

[0014] Optionally, at least two fill lights are provided, and the two fill lights are respectively located above the first conveyor belt and on both sides of the width of the first conveyor belt.

[0015] Optionally, the negative pressure device includes a negative pressure pump and a negative pressure box. Several through holes are opened on the top surface of the negative pressure box. The negative pressure box is connected to the negative pressure pump pipeline. The negative pressure box is located on the back of the first conveyor belt and provides negative pressure to the bearing surface of the first conveyor belt at least in the detection area through the negative pressure through holes.

[0016] Optionally, the through hole is an elongated hole, and the length direction of the elongated hole is the conveying direction of the first conveyor belt.

[0017] Optionally, the label detection device includes a first pressing roller assembly, which is arranged at a preset height above the first conveyor belt;

[0018] And / or, the label detection device includes a third pressing roller assembly, and the third pressing roller assembly is arranged at a preset height above the second conveying device.

[0019] Optionally, the label detection device includes a second pressing roller assembly, which is arranged above the connection between the first conveying device and the second conveying device.

[0020] Optionally, the label detection equipment includes a first material detection device, which is located above the first conveying device and in the detection area, and the first material detection device is electrically connected to the controller.

[0021] Optionally, the label detection device includes a third conveying device located on the downstream side of the second conveying device. When the transport tail end is in the first position, the conveying surfaces of the second conveying device and the third conveying device are located in the same horizontal plane; when the transport tail end is in the second position, the transport tail end is located below the conveying surface of the third conveying device, and the conveying surface of the second conveying device extends obliquely to the horizontal plane.

[0022] Optionally, the label detection device includes a second material detection device, and the second material detection device is located above the second conveying device and close to the side of the third conveying device;

[0023] And / or, the label detection equipment includes a third material detection device, and the third material detection device is located above the third conveying device and close to the second conveying device.

[0024] According to the technical content disclosed in this utility model, the following beneficial effects are achieved:

[0025] The label detection equipment provided by the present invention has a plurality of negative pressure holes on the first conveyor belt, and a negative pressure device is arranged on the back of the first conveyor belt to provide negative pressure to the bearing surface of the first conveyor belt through the negative pressure holes. After the veneer with the electronic tag is placed on the bearing surface of the first conveyor belt, it is flattened and adsorbed on the bearing surface due to the effect of negative pressure. It will not be affected by environmental factors such as wind flow during movement. After moving to the detection area, the camera takes pictures and detects the position of the electronic tag, ensuring the camera's shooting effect and the detection accuracy of the label detection equipment. The visual detection device is electrically connected to the controller. When it detects that the label is crooked, the controller controls the swing device to drive the transport tail end to swing to the second position. When it detects that there is no problem with the label, the controller controls the swing device to drive the transport tail end to swing to the first position, so that qualified materials and unqualified materials can be automatically divided and delivered.

[0026] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0028] Figure 1 This is a three-dimensional diagram of the label detection device of the present invention.

[0029] Figure 2 This is a three-dimensional diagram of the first type of label detection equipment of the present invention with some structures omitted.

[0030] Figure 3 This is a top view of the label detection device of the present invention with some structures omitted.

[0031] Figure 4 This is a perspective view of the second type of label detection equipment of the present invention with some structures omitted.

[0032] Figure 5 This is a structural diagram of the negative pressure device of the present utility model.

[0033] Explanation of the accompanying drawings: 101, first conveyor belt; 102, negative pressure through hole; 2, second conveying device; 3, third conveying device; 401, negative pressure box; 402, negative pressure tube; 403, long hole; 5, detection area; 6, veneer; 7, visual detection device; 701, camera; 702, first support; 703, sliding rod; 704, fill light; 705, second support; 706, display; 8, telescopic rod; 901, first pressure roller assembly; 902, second pressure roller assembly; 903, third pressure roller assembly; 10, control box; 1101, first material detection device; 1102, second material detection device; 1103, third material detection device; 12, synchronous belt. DETAILED DESCRIPTION

[0034] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention.

[0035] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0036] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0037] In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0038] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0039] See also Figure 1 、 Figure 2 and Figure 3 The utility model discloses a label detection device, including a first conveying device, a second conveying device 2 and a third conveying device 3, wherein the second conveying device 2 is located on the downstream side of the first conveying device, and the second conveying device 2 is used to receive materials transmitted by the first conveying device; the third conveying device 3 is located on the downstream side of the second conveying device 2, and the third conveying device 3 is used to receive materials transmitted by the second conveying device 2.

[0040] A visual inspection device 7 is positioned above the first conveyor and is used to inspect veneers 6 on the first conveyor as they move to the inspection zone 5. The free end of the swing mechanism is hingedly connected to the second conveyor 2, causing the output side of the second conveyor 2 to swing upward and downward between a first position and a second position. When the output side of the second conveyor 2 is in the first position, the material on the second conveyor 2 is directly conveyed to the third conveyor 3. When the output side of the second conveyor 2 is in the second position, the output side of the second conveyor 2 is lower than the incoming material side of the third conveyor 3, and the conveying surface of the second conveyor 2 extends downwardly from the incoming material side to the outgoing material side. The material on the second conveyor 2 is directly conveyed from the output side to a receiving basket (not shown) located below the gap between the second and third conveyor 3. The visual inspection device 7 is electrically connected to a controller within a control box 10. When the label on the veneer 6 is detected to be crooked, the controller controls the swing mechanism to swing the output side of the second conveyor 2 to the second position. When the label is detected to be properly attached, the controller controls the swing mechanism to swing the output side of the second conveyor 2 to the first position, automatically separating qualified and unqualified materials.

[0041] Combine Figure 4 and Figure 5 The first conveying device includes an annular first conveyor belt 101, the conveying route of the first conveyor belt 101 passes through the detection area 5 of the label detection device; a plurality of negative pressure holes 102 are evenly opened on the first conveyor belt 101, and a negative pressure device is arranged on the back of the first conveyor belt 101 to provide negative pressure to the bearing surface of the first conveyor belt 101 through the negative pressure holes 102; specifically, the negative pressure device includes a negative pressure pump and a negative pressure box 401, a plurality of through holes are opened on the top surface of the negative pressure box 401, and the negative pressure box 401 and the negative pressure pump are connected by a negative pressure pipe 402. The negative pressure box 401 is located on the back of the first conveyor belt 101 and provides negative pressure to the front of the first conveyor belt 101 at least in the detection area 5 through the negative pressure through holes 102. Preferably, the through holes opened on the top surface of the negative pressure box 401 are elongated holes 403, the length direction of the elongated holes 403 is the conveying direction of the first conveyor belt 101, and the plurality of elongated holes 403 are distributed in an array on the upper surface of the negative pressure box 401. Compared to circular holes, the elongated holes 403 can increase the time that the negative pressure through-holes 102 and the elongated holes 403 remain connected, providing a continuous negative pressure on the bearing surface of the first conveyor belt 101. Providing a continuous negative pressure on the conveying surface of the first conveyor belt 101 allows the veneer 6 on the conveying surface of the first conveyor belt 101 to be stably and fully spread out and laid flat. The veneer 6 will not easily shift relative to the conveying surface of the first conveyor belt 101 and will not be blown off by the wind. Under the action of the negative pressure, the veneer 6 is fully spread out and laid flat on the conveying surface of the first conveyor belt 101, preventing the veneer 6 from curling up, which could lead to inspection failure or reduced inspection accuracy of the visual inspection device 7.

[0042] The visual inspection device 7 is mounted above the first conveyor belt 101 via a mounting frame and includes a camera 701, a first support 702, a slide bar 703, a fill light 704, a second support 705, and a display 706. The slide bar 703 is fixedly connected to the mounting frame and positioned perpendicular to the transport surface of the first conveyor belt 101. The camera 701 is slidably mounted on the slide bar 703 via the first support 702, allowing for adjustment of its height. The fill light 704 is slidably mounted on the slide bar 703 via the second support 705, allowing for adjustment of its height. The first support 702 is positioned above the second support 705, which is equipped with two fill lights 704, one above the first conveyor belt 101 and on either side of its width. The camera 701 is directed toward the inspection zone 5, while the fill light 704 is directed toward the inspection zone 5. The camera 701 and the display 706 are electrically connected to the controller respectively. The display 706 is used to display the shooting picture of the camera 701 and detection information such as detection results.

[0043] The second conveying device 2 is located downstream of the first conveying device. The second conveying device 2 is a belt conveyor. The length of the belt conveyor's bracket is rotatably connected to a rotating shaft on the side of the first conveying device near the second conveying device 2, so that the second conveying device 2 can swing around the rotating shaft. The second conveying device 2 includes a transport head end near the first conveying device and a transport tail end away from the first conveying device. The swinging device includes a telescopic rod 8. The telescopic rod 8 can be a pneumatic telescopic rod, a hydraulic telescopic rod, or other mechanically driven telescopic rod. The fixed end of the telescopic rod 8 is hinged to the mounting bracket below the first conveying device, and the free end of the telescopic rod 8 is hinged to the side of the bottom of the second conveying device 2 near the transport tail end. When the telescopic rod 8 performs telescopic movement, it can drive the transport tail end to swing up and down between the first position and the second position. The telescopic rod 8 is electrically connected to the controller, and the telescopic rod performs telescopic movement based on the detection results of the visual detection device 7.

[0044] The third conveyor 3 is located downstream of the second conveyor 2. When the conveying end of the second conveyor 2 is in the first position, the conveying surfaces of the second conveyor 2 and the third conveyor 3 are on the same horizontal plane. When the conveying end of the second conveyor 2 is in the second position, the conveying end is located below the conveying surface of the third conveyor 3, and the conveying surface of the second conveyor 2 extends obliquely to the horizontal plane. The third conveyor 3 is a belt conveyor.

[0045] The label detection device includes a first pressure roller assembly 901, a second pressure roller assembly 902, and a third pressure roller assembly 903. The first pressure roller assembly 901 is positioned at a predetermined height above the first conveyor belt 101; the third pressure roller assembly 903 is positioned at a predetermined height above the second conveyor 2. The second pressure roller assembly 902 is positioned above the junction between the first and second conveyor 2. The distance between each pressure roller assembly and the supporting surface of each conveyor is equal to or slightly greater than the thickness of the veneer 6.

[0046] The label detection equipment includes a first material detection device 1101, a second material detection device 1102, and a third material detection device 1103, each electrically connected to a controller. The first material detection device 1101 is located above the first conveyor and in detection zone 5. The first material detection device 1101 is electrically connected to the controller. The second material detection device 1102 is located above the second conveyor 2, near the third conveyor 3. The third material detection device 1103 is located above the third conveyor 3, near the second conveyor 2.

[0047] The workflow of label detection equipment:

[0048] The veneers 6 with electronic tags attached to the inspection belt are placed in sequence on the tail end of the first conveyor belt 101 (the loading side, that is, the side away from the second conveyor device 2); the veneers 6 located above the first conveyor belt 101 are spread out and flattened by the negative pressure and adsorbed on the surface of the first conveyor belt 101, and move forward with the first conveyor belt 101. When the veneer 6 is transported to the inspection area 5 and is detected by the first material detection device 1101, the first material detection device 1101 controls the camera through the controller to take pictures to collect images of the veneer 6. The controller controls the telescopic rod 8 to perform telescopic movement according to the detection results of the visual detection device 7. If the visual inspection device 7 determines that the position of the electronic label on the veneer 6 is correct, the telescopic rod 8 drives the transport tail end to rise to the first position. When the veneer 6 is transported to the connection between the first conveyor device and the second conveyor device 2, the second pressure roller assembly 902 acts as a guide to ensure that the veneer 6 enters the second conveyor device 2 smoothly. When the second material detection device 1102 detects the veneer 6, a signal is transmitted through the controller to start the third conveyor device 3 and continue to transport the veneer. The third material detection device 1103 detects the veneer 6, indicating that the veneer 6 will enter the next process from the third conveyor device 3. If the visual inspection device 7 determines that there is a quality problem such as a deviation in the position of the electronic label on the veneer 6 or a missing electronic label, the telescopic rod 8 drives the transport tail end to descend to the second position. The veneer 6 falls directly from the transport tail end of the second conveyor device 2 into the collection box below it, preventing unqualified veneer 6 from passing through the third conveyor device 3 to the next process.

[0049] Furthermore, in order to ensure that the conveying speeds of the first conveying device and the second conveying device 2 are consistent, the driving rollers of the belt conveyors of the first conveying device and the second conveying device 2 are connected by a synchronous belt 12.

[0050] In summary, the label detection equipment provided by the present invention has a plurality of negative pressure through holes on the first conveyor belt, and the negative pressure device is arranged on the back of the first conveyor belt to provide negative pressure to the bearing surface of the first conveyor belt through the negative pressure through holes. After the veneer with the electronic tag is placed on the bearing surface of the first conveyor belt, it is flattened and adsorbed on the bearing surface due to the effect of negative pressure. It will not be affected by environmental factors such as wind flow during movement. After moving to the detection area, the camera takes pictures and detects the position of the electronic tag, ensuring the camera's shooting effect and the detection accuracy of the label detection equipment. The visual detection device is electrically connected to the controller. When it is detected that the label is crooked, the controller controls the swing device to drive the transport tail end to swing to the second position. When it is detected that there is no problem with the label, the controller controls the swing device to drive the transport tail end to swing to the first position, so that qualified materials and unqualified materials can be automatically divided and delivered.

[0051] Although some specific embodiments of the present invention have been described in detail through examples, those skilled in the art will appreciate that the above examples are for illustration only and are not intended to limit the scope of the present invention. Those skilled in the art will appreciate that modifications may be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A label detection device, characterized in that: include: A first conveying device, comprising a first conveying belt, wherein a plurality of negative pressure through holes are formed on the first conveying belt, and a conveying route of the first conveying belt passes through a detection area of the label detection device; a negative pressure device, disposed on the back of the first conveyor belt and providing negative pressure to the bearing surface of the first conveyor belt through the negative pressure through-hole; A visual inspection device, comprising a camera, wherein the camera is directed toward the inspection area; a second conveying device, located on the downstream side of the first conveying device, comprising a conveying head end close to the first conveying device and a conveying tail end away from the first conveying device; a swing device, a free end of which is connected to the second conveying device, and the swing device can drive the transport tail end to swing up and down between a first position and a second position; A controller is electrically connected to the visual detection device and the swing device respectively.

2. The label detection device according to claim 1, characterized in that: The visual inspection device further includes a fill light, the illumination direction of the fill light being toward the inspection area.

3. The label detection device according to claim 2, characterized in that: At least two fill-in lights are provided, and the two fill-in lights are respectively located above the first conveyor belt and on both sides of the width of the first conveyor belt.

4. The label detection device according to any one of claims 1 to 3, characterized in that: The negative pressure device includes a negative pressure pump and a negative pressure box. A plurality of through holes are opened on the top surface of the negative pressure box. The negative pressure box is connected to the negative pressure pump pipeline. The negative pressure box is located on the back of the first conveyor belt and provides negative pressure to the bearing surface of the first conveyor belt at least in the detection area through the negative pressure through holes.

5. The label detection device according to claim 4, characterized in that: The through hole is an elongated hole, and the length direction of the elongated hole is the conveying direction of the first conveyor belt.

6. The label detection device according to any one of claims 1 to 3, characterized in that: The label detection device includes a first pressing roller assembly, which is arranged at a preset height above the first conveyor belt; And / or, the label detection device includes a third pressing roller assembly, and the third pressing roller assembly is arranged at a preset height above the second conveying device.

7. The label detection device according to claim 6, characterized in that: The label detection device includes a second pressing roller assembly, which is arranged above the connection between the first conveying device and the second conveying device.

8. The label detection device according to any one of claims 1 to 3, characterized in that: The label detection equipment includes a first material detection device, which is located above the first conveying device and in the detection area. The first material detection device is electrically connected to the controller.

9. The label detection device according to any one of claims 1 to 3, characterized in that: The label detection device includes a third conveying device located on the downstream side of the second conveying device. When the transport tail end is in the first position, the conveying surfaces of the second conveying device and the third conveying device are located in the same horizontal plane; when the transport tail end is in the second position, the transport tail end is located below the conveying surface of the third conveying device, and the conveying surface of the second conveying device extends obliquely to the horizontal plane.

10. The label detection device according to claim 9, characterized in that: The label detection device includes a second material detection device, which is located above the second conveying device and close to the third conveying device; And / or, the label detection equipment includes a third material detection device, and the third material detection device is located above the third conveying device and close to the second conveying device.

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