Ultrasonic-based cigarette packet transparent paper splice joint detection device
By using an ultrasonic testing device on the cigarette packaging production line, the ultrasonic transmitter and receiver can detect the joints of transparent paper, solving the problem of low testing efficiency in existing technologies, achieving rapid and accurate testing results, and improving production efficiency and product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI CHINA TOBACCO INDUSTRY CO LTD
- Filing Date
- 2025-04-25
- Publication Date
- 2026-05-29
AI Technical Summary
Existing technology cannot quickly and accurately detect the seams of the transparent paper in cigarette packs, resulting in low production efficiency and potentially affecting product quality and brand image.
An ultrasonic-based detection device is used. By setting ultrasonic transmitters and receivers on both sides of the transparent paper guide roller, the splice joint is detected by utilizing the energy attenuation mechanism. The signal emitted by the ultrasonic transmitter is received by the receiver, and the presence of the splice joint is determined based on the signal strength.
It enables rapid and accurate detection of transparent paper splice joints, improving production efficiency, reducing missed detections, and enhancing product quality and production line stability.
Smart Images
Figure CN224303630U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tobacco packaging material testing technology, specifically to the field of cigarette pack transparent paper splice joint testing technology, and particularly to an ultrasonic-based cigarette pack transparent paper splice joint testing device. Background Technology
[0002] The tobacco packaging process includes the production of wrapping the cigarette packs with cellophane. During the production of the cellophane itself, seams are created. In the cellophane wrapping stage of cigarette pack production, the cellophane is wound on rollers, and these seams are not easily and accurately detected by the naked eye. Therefore, how to quickly and accurately detect these cellophane seams has become a pressing problem to be solved. Summary of the Invention
[0003] This invention provides an ultrasonic-based device for detecting the joints of transparent paper in cigarette packs, in order to solve the problem of low efficiency in detecting joints of transparent paper in cigarette packs.
[0004] This utility model provides an ultrasonic-based device for detecting the seam joints of transparent paper in cigarette packs, comprising:
[0005] A fixed base, an ultrasonic transmitter, and an ultrasonic receiver; the ultrasonic transmitter and the ultrasonic receiver are fixed to both ends of the fixed base.
[0006] The fixed base is fixed to the base equipment, which includes multiple transparent paper guide rollers. The fixed base is fixed between two adjacent transparent paper guide rollers. The ultrasonic transmitter and the ultrasonic receiver are located on both sides of the transparent paper wound around the two adjacent transparent paper guide rollers.
[0007] Based on the above technical solution, optionally, the fixed base is U-shaped, and the fixed base includes a transmitter connection part, a receiver connection part and a device connection part. The ultrasonic transmitter is fixed to the transmitter connection part, the ultrasonic receiver is fixed to the receiver connection part, and the device connection part is connected to the base equipment.
[0008] Based on the above technical solution, optionally, the transmitting end connection part is provided with a transmitting end through hole, the receiving end connection part is provided with a receiving end through hole, and the transmitting end through hole and the receiving end through hole are coaxial;
[0009] The ultrasonic transmitter passes through the transmitter through hole and is fixed to the transmitter through hole by a nut;
[0010] The ultrasonic receiver passes through the receiver through hole and is fixed to the receiver through hole by a nut.
[0011] Based on the above technical solution, optionally, the outer surface of the ultrasonic transmitter is provided with threads, and the ultrasonic transmitter is fixed to the transmitter through hole by a first nut and a second nut; the first nut and the second nut are respectively located on both sides of the transmitter connection.
[0012] Based on the above technical solution, optionally, the outer surface of the ultrasonic receiver is provided with threads, and the ultrasonic receiver is fixed to the receiver through hole by a third nut and a fourth nut; the third nut and the fourth nut are respectively located on both sides of the receiver connection part.
[0013] Based on the above technical solution, optionally, the device connection part is provided with a fixing hole, and a fixing bolt is provided in the fixing hole.
[0014] Based on the above technical solution, optionally, the fixing bolt passes through the fixing hole to fix the equipment connection part to the base equipment; or...
[0015] The fixing bolt passes through the fixing hole and fixes the equipment connection part to one end of the connector, while the other end of the connector is connected to the base equipment.
[0016] Based on the above technical solution, optionally, the equipment connection part is provided with an adjustment slot, and an adjustment bolt is provided in the adjustment slot.
[0017] Based on the above technical solution, optionally, the ultrasonic receiver is connected to the controller via a signal connection cable; the power cable of the ultrasonic receiver and / or the signal connection cable are fixed to the fixing base via cable ties; and / or,
[0018] The power cable of the ultrasonic transmitter is fixed to the mounting base by cable ties.
[0019] Based on the above technical solution, optionally, the controller is also connected to an input / output device, the input / output device including a display and an alarm light; and / or, the controller is also connected to a rejection device.
[0020] The technical solution of this utility model embodiment allows for the placement of an ultrasonic transmitter and an ultrasonic receiver on both sides of the transparent paper guide roller during the paper's travel. The ultrasonic signal emitted by the transmitter is received by the receiver. Based on the energy attenuation mechanism, the presence of seams in the transparent paper is determined according to the intensity of the ultrasonic signal received by the receiver. By detecting these seams during the paper's transmission process, rapid and accurate detection of transparent paper seams is achieved.
[0021] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this utility model, nor is it intended to limit the scope of this utility model. Other features of this utility model will become readily apparent from the following description.
[0022] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this utility model, nor is it intended to limit the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description
[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0024] Figure 1 This is a schematic diagram of the structure of an ultrasonic-based cigarette pack transparent paper splice joint detection device provided in an embodiment of this utility model;
[0025] Figure 2 This is a schematic diagram of a scenario for an ultrasonic-based detection device for the joint of transparent paper in cigarette packs, provided in an embodiment of this utility model. Detailed Implementation
[0026] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention 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 invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.
[0027] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.
[0028] The tobacco packaging process includes the production step of wrapping the cigarette pack with cellophane. During the production of the cellophane itself, seams are created. In the cellophane wrapping stage of cigarette pack production, the cellophane is wound on rollers, and these seams are not easily and accurately located by the naked eye.
[0029] The inventors discovered that using infrared technology to detect defects in transparency paper splices is problematic. For example, infrared detection is susceptible to variations in the transparency paper material, splice processing techniques, and ambient light, leading to frequent missed detections and impacting production line stability and product yield. This not only increases production costs but may also trigger consumer complaints, affecting product quality and damaging brand image. Therefore, how to quickly and accurately detect transparency paper splices has become a pressing issue.
[0030] Figure 1 This is a schematic diagram of the structure of an ultrasonic-based cigarette pack transparent paper splice joint detection device provided in an embodiment of this utility model. Figure 2 This is a schematic diagram of a scenario for an ultrasonic-based cigarette pack transparent paper splice detection device provided in this embodiment. This embodiment is applicable to the detection of splices in the transparent paper of cigarette packs during the tobacco packaging production process. The device includes:
[0031] A fixed base 1, an ultrasonic transmitter 2, and an ultrasonic receiver 3; the ultrasonic transmitter 2 and the ultrasonic receiver 3 are fixed to both ends of the fixed base 1.
[0032] The fixed base 1 is fixed to the base equipment, which includes multiple transparent paper guide rollers 4. The fixed base 1 is fixed between two adjacent transparent paper guide rollers 4. The ultrasonic transmitter 2 and the ultrasonic receiver 3 are respectively located on both sides of the transparent paper 0 wound by the two adjacent transparent paper guide rollers 4.
[0033] Ultrasonic transmitter 1 emits high-frequency pulses. When the transparent paper 0 is a single layer, the single layer absorbs some energy, and the remaining energy penetrates the single layer and is captured by ultrasonic transmitter 2. There is a transparent paper splice joint at the junction of the two transparent papers, which is formed by splicing two transparent papers together. When the pulse signal encounters the transparent paper splice joint, the ultrasonic wave needs to penetrate the interface between the two media. The energy is significantly attenuated due to secondary refraction and material absorption effects, resulting in a significant reduction in the received signal strength.
[0034] The interface reflection effect of transparent paper is as follows. Ultrasonic waves are reflected and refracted on the top and bottom surfaces of a single layer of transparent paper, respectively, and a weak signal can be detected at the receiving end. At the joint of the transparent material, where an additional interface is formed between the two layers of paper, the ultrasonic waves need to undergo two penetrations and three reflections (air-paper-paper-air), and the signal intensity attenuates to near zero.
[0035] Therefore, the ultrasonic receiver 3 transmits the detected signal to the controller. The controller can determine whether a transparent paper splice exists based on the strength of the signal output by the ultrasonic receiver 3.
[0036] This invention relates to an ultrasonic-based cigarette pack transparent paper splice detection device, which features an ultrasonic transmitter 2 and an ultrasonic receiver 3 positioned on either side of the transparent paper guide roller 4 during the transmission of the transparent paper 0. The ultrasonic signal emitted by the transmitter 2 is received by the receiver 3. Based on an energy attenuation mechanism, the presence of a splice in the transparent paper 0 is determined according to the intensity of the ultrasonic signal received by the receiver 3. By detecting splices during the transmission of the transparent paper 0, the device achieves rapid and accurate detection of such splices.
[0037] Based on the above technical solution, optionally, the fixed base 1 is U-shaped, and the fixed base 1 includes a transmitter connection part 11, a receiver connection part 12 and a device connection part 13. The ultrasonic transmitter 2 is fixed to the transmitter connection part 11, the ultrasonic receiver 3 is fixed to the receiver connection part 12, and the device connection part 13 is connected to the basic equipment.
[0038] The fixing base 1 can be U-shaped or other shapes, as long as it enables the ultrasonic receiver 3 fixed to the receiving end connection 12 to receive the ultrasonic signal emitted by the ultrasonic transmitter 2 fixed to the transmitting end connection 11. In this embodiment of the invention, the use of a U-shaped fixing base 1 can fix the ultrasonic transmitter 2 and the ultrasonic receiver 3, thereby fixing their relative positions and improving the stability of ultrasonic signal transmission and reception.
[0039] Based on the above technical solution, optionally, the transmitting end connection part 11 is provided with a transmitting end through hole, the receiving end connection part 12 is provided with a receiving end through hole, and the transmitting end through hole and the receiving end through hole are coaxial;
[0040] The ultrasonic transmitter 2 passes through the transmitter through hole and is fixed to the transmitter through hole by a nut; the ultrasonic receiver 3 passes through the receiver through hole and is fixed to the receiver through hole by a nut.
[0041] The transmitting end through hole and the receiving end through hole are coaxial, so that the ultrasonic transmitting end 2 fixed to the transmitting end through hole and the ultrasonic receiving end 3 fixed to the receiving end through hole are coaxial, further improving the stability of ultrasonic signal transmission and reception.
[0042] Based on the above technical solution, optionally, the outer surface of the ultrasonic transmitter 2 is provided with threads, and the ultrasonic transmitter 2 is fixed to the transmitter through hole by a first nut 51 and a second nut 52; the first nut 51 and the second nut 52 are respectively located on both sides of the transmitter connection part 11.
[0043] The first nut 51 and the second nut 52 respectively engage with the threads on the outer surface of the ultrasonic transmitter 2, fixing the ultrasonic transmitter 2 in the transmitter through hole. Furthermore, by engaging the first nut 51 and the second nut 52, the position of the ultrasonic transmitter 2 in the transmitter through hole can be adjusted, thereby adjusting the distance between the ultrasonic transmitter 2 and the transparent paper 0.
[0044] The above-described embodiment can finely adjust the position of the ultrasonic transmitter 2 by means of the first nut 51 and the second nut 52, and stably fix the ultrasonic transmitter 2 to the transmitter connection part 11, thereby improving the reliability of ultrasonic signal transmission and reception.
[0045] Based on the above technical solution, optionally, the outer surface of the ultrasonic receiver 3 is provided with threads, and the ultrasonic receiver 3 is fixed to the receiver through hole by a third nut 53 and a fourth nut 54; the third nut 53 and the fourth nut 54 are respectively located on both sides of the receiver connection part 12.
[0046] The third nut 53 and the fourth nut 54 respectively engage with the threads on the outer surface of the ultrasonic receiver 3, fixing the ultrasonic receiver 3 in the transmitting end through hole. Furthermore, by engaging the third nut 53 and the fourth nut 54, the position of the ultrasonic receiver 3 in the receiving end through hole can be adjusted, thereby adjusting the distance between the ultrasonic receiver 3 and the transparent paper 0.
[0047] The above-described embodiment can finely adjust the position of the ultrasonic receiver 3 by means of the third nut 53 and the fourth nut 54, and stably fix the ultrasonic receiver 3 to the receiver connection part 12, thereby improving the reliability of ultrasonic signal transmission and reception.
[0048] Based on the above technical solution, optionally, the device connection part 13 is provided with a fixing hole, and a fixing bolt 6 is provided in the fixing hole.
[0049] Based on the above technical solution, optionally, in one implementation, the fixing bolt 6 passes through the fixing hole to fix the equipment connection part 13 to the base equipment.
[0050] The basic equipment has a plane close to the transparent paper guide roller 4, so that after the fixed base 1 is fixed on the plane, the ultrasonic transmitter 2 and the ultrasonic receiver 3 can be located on both sides of the transparent paper 0 wound by the two adjacent transparent paper guide rollers 4.
[0051] Based on the above technical solution, alternatively, in another implementation, the fixing bolt 6 passes through the fixing hole to fix the equipment connection part 13 to one end of the connector 8, and the other end of the connector 8 is connected to the base equipment.
[0052] The surface of the base equipment is far from the transparent paper guide roller 4, which means that when the fixing base 1 is fixed to the surface of the base equipment, the ultrasonic transmitter 2 and the ultrasonic receiver 3 cannot be located on both sides of the transparent paper 0 wound by the two adjacent transparent paper guide rollers 4. In this case, the connector 8 can be a connecting rod, with one end of the connector 8 fixed to the surface of the base equipment and the other end of the connector 8 fixed to the equipment connection part 13 of the fixing base 1. Figure 1 The middle connector 8 is an L-shaped connector, which is an alternative to the connecting rod.
[0053] The two implementation methods described above can handle different basic equipment scenarios, ensuring that the relative positions of the fixed base 1, the basic equipment, and the transparent paper guide roller 4 are fixed. This guarantees that the ultrasonic transmitter 2 and the ultrasonic receiver 3 are located on both sides of the transparent paper 0 wound around the two adjacent transparent paper guide rollers 4, improving the reliability of transparent paper splice detection.
[0054] Based on the above technical solution, optionally, the equipment connection part 13 is provided with an adjustment slot 131, and an adjustment bolt 7 is provided in the adjustment slot.
[0055] The adjusting slot 131 can be arc-shaped. The adjusting slot 131 limits the movement of the adjusting bolt 7, thereby controlling the rotation of the fixed base 1. As the fixed base 1 rotates, the ultrasonic signal transmission formed by the ultrasonic transmitter 2 and the ultrasonic receiver 3 reverses direction, changing the angle between the signal and the direction of travel of the transparent paper. When this angle is adjusted to a suitable position, the locking adjusting bolt 7 fixes the position of the fixed base 1, thereby improving the reliability of ultrasonic signal transmission and reception.
[0056] Based on the above technical solution, optionally, the ultrasonic receiver 3 is connected to the controller via a signal connection line 31; the receiver power line 32 and / or the signal connection line 31 connected to the ultrasonic receiver 3 are fixed to the fixing base 1 by cable ties; and / or,
[0057] The power cable 21 of the ultrasonic transmitter 2 is fixed to the base 1 by a cable tie.
[0058] The ultrasonic receiver 3 transmits the acquired signal to the controller via signal connection line 31. The controller is capable of detecting transparent splice joints based on the ultrasonic signal.
[0059] The controller can be a programmable logic controller (PLC).
[0060] Based on the above technical solution, optionally, the controller is also connected to an input / output device, the input / output device including a display and an alarm light; and / or, the controller is also connected to a rejection device.
[0061] When the controller detects a transparency splice, it communicates with the connected rejection device. The rejection device performs the rejection action on the transparency splice. The rejection device can be a MICROII controller.
[0062] The input / output device displays a pre-configured button panel, which includes buttons for setting the rejection step count, start / stop, threshold setting, and reset. The button panel layout is designed to be logical, easy to operate, and readily understandable and usable by the operator. Operators can conveniently set the rejection step count, view rejection statistics, and control the system's start and stop via the button panel.
[0063] The controller can also preprocess the ultrasonic sensor signals by filtering and amplifying them to extract effective detection information. It determines whether there is a seam in the transparent paper based on a preset threshold. When the signal change exceeds the threshold, a seam is identified. When a seam is detected, an alarm light is activated.
[0064] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.
Claims
1. An ultrasonic-based device for detecting the splicing joints of transparent paper in cigarette packs, characterized in that, include: A fixed base, an ultrasonic transmitter, and an ultrasonic receiver; the ultrasonic transmitter and the ultrasonic receiver are fixed to both ends of the fixed base. The fixed base is fixed to the base equipment, which includes multiple transparent paper guide rollers. The fixed base is fixed between two adjacent transparent paper guide rollers. The ultrasonic transmitter and the ultrasonic receiver are located on both sides of the transparent paper wound around the two adjacent transparent paper guide rollers.
2. The ultrasonic-based cigarette pack transparent paper splice joint detection device according to claim 1, characterized in that, The fixed base is U-shaped and includes a transmitter connection part, a receiver connection part, and a device connection part. The ultrasonic transmitter is fixed to the transmitter connection part, the ultrasonic receiver is fixed to the receiver connection part, and the device connection part is connected to the base equipment.
3. The ultrasonic-based cigarette pack transparent paper splice joint detection device according to claim 2, characterized in that, The transmitting end connection part is provided with a transmitting end through hole, the receiving end connection part is provided with a receiving end through hole, and the transmitting end through hole and the receiving end through hole are coaxial; The ultrasonic transmitter passes through the transmitter through hole and is fixed to the transmitter through hole by a nut; The ultrasonic receiver passes through the receiver through hole and is fixed to the receiver through hole by a nut.
4. The ultrasonic-based cigarette pack transparent paper splice joint detection device according to claim 3, characterized in that, The outer surface of the ultrasonic transmitter is provided with threads, and the ultrasonic transmitter is fixed to the transmitter through hole by a first nut and a second nut; the first nut and the second nut are respectively located on both sides of the transmitter connection.
5. The ultrasonic-based cigarette pack transparent paper splice joint detection device according to claim 4, characterized in that, The outer surface of the ultrasonic receiver is provided with threads, and the ultrasonic receiver is fixed to the receiver through hole by a third nut and a fourth nut; the third nut and the fourth nut are respectively located on both sides of the receiver connection.
6. The ultrasonic-based cigarette pack transparent paper splice joint detection device according to claim 2, characterized in that, The device connection part is provided with a fixing hole, and a fixing bolt is provided in the fixing hole.
7. The ultrasonic-based cigarette pack transparent paper splice joint detection device according to claim 6, characterized in that, The fixing bolt passes through the fixing hole to fix the equipment connection part to the base equipment; or... The fixing bolt passes through the fixing hole and fixes the equipment connection part to one end of the connector, while the other end of the connector is connected to the base equipment.
8. The ultrasonic-based cigarette pack transparent paper splice joint detection device according to claim 7, characterized in that, The device connection part is provided with an adjustment slot, and an adjustment bolt is provided in the adjustment slot.
9. The ultrasonic-based cigarette pack transparent paper splice joint detection device according to claim 8, characterized in that, The ultrasonic receiver is connected to the controller via a signal cable; the power cable and / or the signal cable connected to the ultrasonic receiver are fixed to the mounting base via cable ties; and / or... The power cable of the ultrasonic transmitter is fixed to the mounting base by cable ties.
10. The ultrasonic-based cigarette pack transparent paper splice joint detection device according to claim 9, characterized in that, The controller is also connected to input / output devices, including displays and alarm lights; and / or, the controller is also connected to rejection devices.