Gluing detection device for filter stick forming paper

Abstract

The utility model provides a gluing detection device for filter stick forming paper, and belongs to the technical field of tobacco processing. The filter stick forming paper gluing detection device comprises a signal processing part, an alarm part, a gluing part and a glue line detection part. According to the utility model, if the first detection optical signal is within the first preset optical signal range, the gluing of the filter stick forming paper on the surface is normal, and if the first detection optical signal is not within the first preset optical signal range, the gluing of the filter stick forming paper on the surface is unqualified, and the signal processing part controls the alarm part to give an alarm; by adopting spectrum detection, the resolution ratio and the detection speed are obviously higher than those of a visual detection mode, the time interval of detection of the middle line glue and the length of a middle line glue section which is not detected are shortened, and the detection precision and the reliability of a detection result are improved; and the filter stick processing quality can be controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of tobacco processing, in particular to a filter rod forming paper gluing detection device. Background Art

[0002] Centerline glue refers to the uninterrupted glue line applied along the length of the coil paper during the cigarette filter rod forming process. It is typically located in the middle of the coil paper width and is usually present in two strips. It is used to bond the filament tow and coil paper together, securing the two. Missing centerline glue on the coil paper can affect the filter rod forming quality, further reducing cigarette quality. Therefore, centerline glue detection is crucial for controlling cigarette processing quality. Currently, the industry primarily uses visual inspection to detect centerline glue in filter rods. However, due to the 3ms or longer interval between inspections required for image acquisition and transmission, the filter rod gluing line in the workshop operates at a speed of 600m / min. This means that within the inspection interval, a 30mm length of coil paper may not be detected. This means that the visual inspection solution can only miss 30mm of centerline glue for every 100mm of centerline glue inspection. This results in insufficient reliability of centerline glue detection results, making filter rod quality control difficult. Utility Model Content

[0003] The purpose of the utility model is to provide a filter rod wrap glue coating detection device to address the deficiencies of the prior art.

[0004] The utility model provides a filter rod wrapping paper gluing detection device, comprising a signal processing component, an alarm component, a gluing component for applying centerline glue to a moving filter rod wrapping paper, and a glue line detection component that moves synchronously with the gluing component and is used to detect a spectral signal at a gluing position on a filter rod wrapping paper. The glue line detection component comprises a relatively arranged optical signal transmitting module and an optical signal receiving module, and a detection channel arranged between the optical signal transmitting module and the optical signal receiving module for the filter rod wrapping paper to pass through. The optical signal transmitting module transmits a first detection optical signal toward the optical signal receiving module, and the optical signal receiving module is used to receive the first detection optical signal emitted by the optical signal transmitting module and passing through a filter rod wrapping paper. The signal processing component is used to control the alarm component to alarm when the first detection optical signal is not within a first preset optical signal range.

[0005] Furthermore, the signal processing component is a PLC or FPGA chip.

[0006] Furthermore, it also includes a mounting bracket connected to the glue applicator and a mounting plate connected to the mounting bracket, and the optical signal transmitting module and the optical signal receiving module are respectively connected to the mounting plate.

[0007] Furthermore, it also includes an adjustment plate that is detachably connected to the mounting plate, and a first mounting seat and a second mounting seat that are respectively detachably connected to the bottom of the adjustment plate, the first mounting seat and the second mounting seat are arranged at intervals, the optical signal transmitting module is connected to the first mounting seat, and the optical signal receiving module is connected to the second mounting seat.

[0008] Furthermore, a first projection of the glue outlet of the glue coating member on the filter plug wrapping paper is within a width range of a second projection of the detection channel on the filter plug wrapping paper.

[0009] Furthermore, the optical signal transmitting module includes a transmitting housing and a light source arranged inside the transmitting housing, and the optical signal receiving module includes a receiving housing and a photosensitive element arranged in the receiving housing for receiving light emitted by the light source.

[0010] Furthermore, the off signal transmitting module further includes a focusing collimating lens disposed in the transmitting housing and located on the light output path of the light source, and the focusing collimating lens is used to limit the light path of the light emitted from the light source.

[0011] Furthermore, the light source is a near-infrared light source for emitting near-infrared light.

[0012] Furthermore, the glue coating members are multiple and are arranged along the direction of movement of the filter plug wrapping paper, and the glue line detection members are multiple and are arranged corresponding to the multiple glue coating members.

[0013] Furthermore, the optical signal transmitting module further includes a heat sink provided on a side surface of the transmitting housing away from the receiving housing.

[0014] The utility model provides a filter rod forming paper gluing detection device with the following beneficial effects:

[0015] The glue coating component coats the moving filter rod forming paper with centerline glue, and the optical signal transmitting module sends a first detection light signal toward the optical signal receiving module. The optical signal receiving module receives the first detection light signal emitted by the optical signal transmitting module and passing through a filter rod forming paper. The optical signal receiving module receives the first preset light signal emitted by the optical signal transmitting module and passing through the position where the glue coating is completed on the filter rod forming paper. If the first detection light signal is within the range of the first preset light signal, it means that the glue coating of the filter rod forming paper is normal. If the first detection light signal is not within the range of the first preset light signal, it means that the glue coating of the filter rod forming paper is unqualified. The signal processing component controls the alarm component to alarm, so as to determine whether the filter rod forming paper is coated with centerline glue. Spectral detection is adopted, and its resolution and detection speed are significantly higher than the visual detection method, shortening the time interval of centerline glue detection and the length of the undetected centerline glue section, improving the detection accuracy and the reliability of the detection results, which is beneficial to controlling the processing quality of the filter rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which are incorporated into and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention. In these drawings, similar reference numerals are used to represent similar elements. The drawings described below are some embodiments of the present invention, but not all. Those skilled in the art can derive other drawings from these drawings without inventive effort.

[0017] Figure 1 This is a principle block diagram of a filter plug wrapping paper gluing detection device according to an embodiment of the present utility model;

[0018] Figure 2 This is a structural schematic diagram of a filter plug wrapping paper gluing detection device according to an embodiment of the present utility model;

[0019] Figure 3 This is a structural diagram of a filter plug wrap glue detection device according to an embodiment of the present invention, in which an adjustment plate is connected to a mounting plate and a glue line detection component is installed on the adjustment plate;

[0020] Figure 4 The figure is a schematic diagram of signal transmission in a filter rod wrapping paper gluing detection device according to an embodiment of the present invention.

[0021] In the figure: 1-filter rod forming machine, 11-glue coating part, 2-glue line detection part, 21-optical signal transmitting module, 211-transmitting housing, 212-light source, 213-focusing collimating lens, 214-heat sink, 22-optical signal receiving module, 221-receiving housing, 222-photosensitive element, 23-detection channel, 3-filter rod wrapping paper, 4-signal processing part, 5-rejection part, 61-mounting bracket, 62-mounting plate, 621-first fixing hole, 63-adjusting plate, 631-second fixing hole, 64-first mounting seat, 65-second mounting seat. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. It should be noted that, in the absence of conflict, the embodiments in this application and the features in the embodiments can be arbitrarily combined with each other.

[0023] See also Figures 1 to 4A filter rod wrapping paper gluing detection device according to an embodiment of the present invention comprises a signal processing component 4, an alarm component, a gluing component 11 for applying centerline glue to a moving filter rod wrapping paper 3, a glue line detection component 2 that moves synchronously with the gluing component 11 and detects a spectral signal at a gluing position on a filter rod wrapping paper 3, the glue line detection component 2 comprising an optical signal transmitting module 21 and an optical signal receiving module 22 that are relatively arranged, and a detection channel 23 arranged between the optical signal transmitting module 21 and the optical signal receiving module 22 for the filter rod wrapping paper 3 to pass through, the optical signal transmitting module 21 transmits a first detection optical signal toward the optical signal receiving module 22, the optical signal receiving module 22 receives the first detection optical signal emitted by the optical signal transmitting module and passing through a filter rod wrapping paper 3, and the signal processing component 4 controls the alarm component to sound an alarm when the first detection optical signal is not within a first preset optical signal range.

[0024] Here, the present application is used to detect the glue coating quality at the gluing location on the filter rod wrapping paper 3. An optical signal transmitting module 21 and an optical signal receiving module 22 are used to detect the filter rod wrapping paper 3 after the gluing line operation. The optical signal emitted by the optical signal transmitting module 21 passes through the filter rod wrapping paper 3 with normal gluing to the optical signal receiving module 22. The signal received by the optical signal receiving module 22 is a first preset optical signal. If the optical signal emitted by the optical signal transmitting module 21 passes through a location without gluing, the signal received by the optical signal receiving module 22 is outside the first preset optical signal range, indicating that the filter rod wrapping paper 3 is not glued. A sudden change in the first detection optical signal received by the optical signal receiving module 22 is used to determine whether the filter rod wrapping paper 3 is glued, that is, whether the center line glue is applied. This helps detect unqualified filter rods produced from unglued filter rod wrapping paper 3. Users can discard unqualified filter rods produced from unglued filter rod wrapping paper 3, avoiding the difficulty of finding unqualified filter rods among a large number of filter rods later, thereby reducing the difficulty of filter rod processing.

[0025] Specifically, the filter plug wrap 3 may be coiled paper. The alarm component may be an audible and visual alarm, and the signal processing component 4 is used to control the alarm component to emit an alarm signal when the first detection light signal is not within the first preset light signal range.

[0026] Specifically, it can also include a filter rod forming machine 1, which includes a conveying mechanism for driving the filter rod forming paper 3 to move, and a forming machine electronic control system for controlling the operation of the conveying mechanism and controlling the gluing operation. The gluing component 11 in this application is electrically connected to the forming machine electronic control system. The gluing component 11 can be a part of the filter rod forming machine 1. The gluing component 11 is arranged on the side of the conveying mechanism. Under the drive of the forming machine electronic control system, the gluing component 11 continuously applies glue to the filter rod forming paper 3 moving on the conveying mechanism to achieve sequential gluing operations on each section of the filter rod forming paper 3.

[0027] Specifically, the glue line detection component 2 moves synchronously with the glue coating component 11. The glue line detection component 2 is used to detect the spectral signal of the glue coating position on the filter rod wrapping paper 3 and determine the presence of glue on the filter rod wrapping paper 3 through spectral signal analysis. The detection channel 23 is for the filter rod wrapping paper 3 to pass through after the glue coating operation. The optical signal transmission module 21 is used to emit near-infrared light, and the optical signal receiving module 22 is used to receive near-infrared light signals. The signal processing component 4 is communicatively connected or electrically connected to the optical signal transmission module 21 and the optical signal receiving module 22 respectively. The signal processing component 4 receives the spectral intensity signals transmitted by the optical signal transmission module 21 and the optical signal receiving module 22 respectively. The signal processing module is electrically connected to the optical signal transmission module 21 and the optical signal receiving module 22 to ensure signal stability.

[0028] Specifically, during operation of this application, the device is first initialized. Then, an uncoated portion of the filter plug wrap 3 passes through the detection channel 23. The glue line detection component 2 collects and stores the near-infrared spectral signal of the uncoated portion as a reference signal. It should be noted that when the near-infrared light emitted by the optical signal transmitting module 21 passes through the uncoated filter plug wrap 3, the near-infrared spectral signal (or light intensity signal) received by the optical signal receiving module 22 varies minimally from the near-infrared spectral signal (or light intensity signal) emitted by the optical signal transmitting module 21. This pre-collection of the reference signal is primarily intended to eliminate the influence of the thickness and quality of the filter plug wrap 3 on the detection results. After entering the normal operating flow, the optical signal transmitting module 21 of the glue line detection component 2 emits near-infrared light in real time. Because the centerline glue is water-based, the near-infrared light's intensity decreases as it passes through the glue-coated filter plug wrap 3. Consequently, the signal processing component 4, based on a sudden increase in the signal received from the optical signal receiving module 22, determines that glue is not applied at that location, indicating a glue leak. This sudden increase in the near-infrared spectrum signal is an abnormal spectrum intensity signal. At this point, the signal processing component 4 sends an alarm signal to the alarm component and a rejection signal to the rejection component 5, controlling the alarm component to sound an alarm and the rejection component 5 to remove the filter plug wrap 3 corresponding to the abnormal spectrum intensity signal.

[0029] The glue line detection member 2 may be a member that moves synchronously with the glue coating member 11 , so that the distance between the glue line detection member 2 and the glue coating member 11 remains unchanged.

[0030] The signal processing component 4 can be a PLC or FPGA chip.

[0031] The filter plug wrap glue detection device in this embodiment may further include a mounting bracket 61 connected to the glue applicator, a mounting plate 62 connected to the mounting bracket 61 , and the optical signal transmitting module 21 and the optical signal receiving module 22 are respectively connected to the mounting plate 62 .

[0032] As a filter rod wrapping paper gluing detection device in this embodiment, it can also include an adjustment plate 63 detachably connected to the mounting plate 62, and a first mounting seat 64 and a second mounting seat 65 detachably connected to the bottom of the adjustment plate 63, respectively. The first mounting seat 64 and the second mounting seat 65 are arranged at intervals, the optical signal transmitting module 21 is connected to the first mounting seat 64, and the optical signal receiving module 22 is connected to the second mounting seat 65.

[0033] For details, see Figure 2 and Figure 3 Adjustment plate 63 is L-shaped. The vertical portion of the L-shaped structure of adjustment plate 63 is fixedly connected to mounting plate 62, and the horizontal portion of the L-shaped structure of adjustment plate 63 is used to mount first mounting seat 64 and second mounting seat 65. Thus, when first mounting seat 64 and second mounting seat 65 are fixed, the distance between optical signal transmitting module 21 and optical signal receiving module 22 is determined. In this embodiment, the glue line detection member 2 is compact and is mounted on the glue coating member 11. It can follow the position of the glue line of the center glue, preventing the glue line from exceeding the field of view.

[0034] A first projection of the glue outlet of the glue coating member 11 on the filter plug wrap 3 may be within a width range of a second projection of the detection channel 23 on the filter plug wrap 3 .

[0035] Specifically, the projection of the glue outlet of the glue coating member 11 onto the filter plug wrap 3 is within the width of the projection of the detection channel 23 onto the filter plug wrap 3. In other words, it is necessary to ensure that the glued portion of the filter plug wrap 3 falls within the detection range of the glue line detection. This prevents erroneous detection results caused by the glue line detection member 2 detecting non-glue-coated portions of the filter plug wrap 3 due to misalignment between the glue line detection member 2 and the glue coating member 11, thereby improving the reliability of the detection results. In this embodiment, the projection of the glue outlet of the glue coating member 11 onto the filter plug wrap 3 can be located either in the middle or on the side of the filter plug wrap 3. Since the glue line detection member 2 is fixed to the glue coating member 11, the glue line detection member 2 and the glue coating member 11 move synchronously when the position of the glue coating member 11 is adjusted, thereby ensuring that the glue line detection member 2 is always aligned with the glue coating member 11.

[0036] The mounting plate 62 may be provided with a plurality of first fixing holes 621, the adjusting plate 63 may be provided with a plurality of second fixing holes 631, and further include a first fastening structure, a second fastening structure, and a third fastening structure; one end of the first fastening structure passes through different first fixing holes 621 and is fixedly connected to the mounting bracket 61, so as to detachably fix the adjusting plate 63 and the mounting plate 62; one end of the second fastening structure passes through the first second fixing hole 631 and is fixedly connected to the first mounting seat 64, so as to detachably fix the first mounting seat 64 and the adjusting plate 63; one end of the third fastening structure passes through the second second fixing hole 631 and is fixedly connected to the second mounting seat 65, so as to detachably fix the second mounting seat 65 and the adjusting plate 63.

[0037] Specifically, the first fastening structure, the second fastening structure, and the third fastening structure can all be screws. There are at least three second fixing holes 631. By connecting the first mounting base 64 to the first fixing hole and connecting the second mounting base 65 to the remaining second fixing holes 631, the distance between the first mounting base 64 and the second mounting base 65 can be changed, thereby changing the distance between the optical signal transmitting module 21 and the optical signal receiving module 22.

[0038] The optical signal transmitting module 21 may include a transmitting housing 211 and a light source 212 disposed inside the transmitting housing 211 . The optical signal receiving module 22 may include a receiving housing 221 and a photosensitive element 222 disposed inside the receiving housing 221 for receiving light emitted by the light source 212 .

[0039] The optical signal transmitting module 21 may further include a focusing collimating lens 213 disposed in the transmitting housing 211 and located on the light output path of the light source 212 . The focusing collimating lens 213 is used to define the light path of the light emitted from the light source 212 .

[0040] The light source 212 may be a near-infrared light source 212 for emitting near-infrared light.

[0041] Specifically, the photosensitive element 222 is electrically connected to the signal processing component 4 via a cable head passing through the receiving housing 221 .

[0042] There may be a plurality of glue coating members 11 provided along the moving direction of the filter plug wrapping paper 3 , and a plurality of glue line detection members 2 provided corresponding to the plurality of glue coating members 11 .

[0043] Specifically, by providing multiple gluing components 11, the gluing width on the filter plug wrap 3 is increased, ensuring that the glue on the filter plug wrap 3 is sufficient to secure the tow, thereby improving the stability and reliability of the filter plug after bonding. In this embodiment, the signal processing component 4 is electrically connected to the filter plug maker 1. Thus, the operation of the signal processing component 4 is triggered by the filter plug maker 1. That is, when the filter plug maker 1 sends a gluing signal to the gluing component 11, the signal processing component 4 receives the signal from the filter plug maker 1 and, in real time, receives the signal from the glue line detection component 2 to perform gluing detection.

[0044] The optical signal transmitting module 21 may further include a heat sink 214 disposed on a side of the transmitting housing 211 away from the receiving housing 221 .

[0045] Specifically, the heat sink 214 can prevent the light source 212 from being damaged due to overheating of the optical signal transmitting module 21; the focusing collimating lens 213 is used to limit the optical path of the near-infrared light emitted from the light source 212 to improve the signal-to-noise ratio of the near-infrared light signal, thereby improving the reliability of the detection results.

[0046] Specifically, the traditional visual inspection method can only detect the presence of centerline glue and issue an alarm. After the inspection, unqualified filter rods mixed in a large number of filter rods need to be found manually, which is difficult and increases the difficulty of filter rod processing. With the upgrade of cigarette filter rods, filter rods with transparent windows are now available. In order to ensure the beauty of the transparent window, centerline glue cannot be applied at the window position. In this way, it is necessary to implement intermittent gluing when applying the centerline glue. At this time, it is necessary to detect whether the phase of the intermittent gluing is correct. If it is incorrect, it must be shifted and removed. Therefore, the present application also includes a rejection member 5. When the first detection light signal is not within the first preset light signal range, the signal processing member 4 controls the rejection member 5 to shift and remove the filter rod formed by the filter rod forming paper 3. Specifically, the rejection member 5 can be a pneumatic valve electrically connected to the signal processing member 4. The pneumatic valve is driven by the signal processing member 4 to push out unqualified filter rods.

[0047] Specifically, in other embodiments, the thickness of the centerline glue on the filter plug wrap 3 can also be detected. Specifically, the glue line detection component 2 first performs near-infrared spectroscopy on the filter plug wrap 3 coated with a standard thickness of centerline glue, and the resulting near-infrared spectral intensity signal is used as the standard signal. Once the normal detection process begins, the glue line detection component 2 collects the near-infrared spectral intensity signal of the inspected portion of the filter plug wrap 3 in real time. When the acquired near-infrared spectral intensity signal fluctuates within approximately 20% of the standard signal, i.e., (|acquired near-infrared spectral intensity signal value - standard signal|) / standard signal ≤ 20%, the centerline glue coating thickness is determined to be acceptable. When this ratio exceeds 20%, the centerline glue coating thickness is determined to be unacceptable. If a single unacceptable centerline glue coating thickness signal is detected, the signal processing component 4 controls the alarm component to sound an alarm. If the unacceptable signal is detected three or more times in a row, the signal processing component 4 controls the rejection component 5 to reject the filter plugs processed from the filter plug wrap 3 corresponding to the unacceptable signal.

[0048] Specifically, in this embodiment, the glue line detection device 2 has a detection speed of 0.04ms per test. When the filter plug wrap 3 moves at a speed of 600m / min, the glue line detection device 2 detects the centerline glue length on the filter plug wrap 3 with a resolution of 0.4mm. That is, when the filter plug wrap 3 moves at a speed of 600m / min, the glue line detection device 2 detects a centerline glue length of 0.4mm in a single test. The device also has a maximum overall response speed of 0.04ms, meaning that the device triggers, collects signals, processes signals, and performs rejection within 0.04ms. The following table summarizes the differences between the centerline glue detection device 10 of this embodiment and traditional visual inspection solutions:

[0049] Technical Principle Ultra-high-speed spectral detection Visual Inspection Detection speed 0.04 ms / detection >3ms / detection Centerline rubber length detection resolution (600 m / min vehicle speed) 0.4 mm >100 mm Center line glue missed detection length Approaching 0 >30 mm Reject unqualified products individually have none

[0050] As can be seen from the table above, the filter rod wrapping paper gluing detection device of this embodiment has significantly improved detection speed and resolution compared to the visual inspection solution, and its missed detection length approaches 0. It can achieve continuous and uninterrupted detection of centerline glue and can reject individual unqualified products in real time, avoiding the difficulty of finding them during the subsequent centralized rejection of unqualified products.

[0051] Specifically, the rejecting element 5 is electrically connected to the signal processing element 4. When the first detected light signal falls outside the first preset light signal range, the signal processing element 4 indicates that the first detected light signal has an abnormal spectral intensity signal. This indicates that the signal processing element 4 has received the abnormal spectral intensity signal. At this point, the signal processing element 4 controls the rejecting element 5 to shift and reject the corresponding filter stick formed by the roll of filter plug wrap 3, thereby rejecting filter sticks with unqualified glue coating. This shifting rejection of unqualified filter sticks by the rejecting element 5 occurs because the centerline glue test targets the filter plug wrap 3. After the inspection, the filter plug wrap 3 enters the converging stage, where it forms a strip (i.e., a filter stick). Filter sticks containing unqualified filter plug wrap 3 are then rejected. Because the roll is not rejected simultaneously with the detection of unqualified filter plug wrap 3, but rather after processing at the next station, it is also called shifting rejection.

[0052] Specifically, by setting a glue line detection part 2 that moves synchronously with the glue coating part 11, an optical signal transmitting module 21 and an optical signal receiving module 22 are used to shoot and detect the filter rod forming paper 3 after the glue coating line operation, and the sudden change of the signal received by the optical signal receiving module 22 is used to judge whether the filter rod forming paper 3 is coated with center line glue, thereby detecting the filter rod with unqualified glue coating, and the unqualified filter rod is rejected by the rejection part 5 to avoid the difficulty of searching for unqualified filter rods in a large number of filter rods in the later stage, thereby reducing the difficulty of filter rod processing; in addition, high-speed spectral detection is adopted, and its resolution and detection speed are significantly higher than those of visual detection method, shortening the time interval of center line glue detection and the length of undetected center line glue section, improving the detection accuracy and reliability of the detection results, which is beneficial to controlling the processing quality of filter rods, and can also be used to detect whether the phase of intermittent glue coating is correct.

[0053] The contents described above can be implemented individually or in combination in various ways, and these variations are all within the scope of protection of the present invention.

[0054] It should be noted that, in the description of the present application, the terms "upper end", "lower end" and "bottom end" indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the device referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprising a..." do not exclude the presence of other identical elements in the process, method, article or device comprising the elements.

[0055] Finally, it should be noted that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art will appreciate that modifications may be made to the technical solutions described in the above embodiments, or that some of the technical features may be replaced with equivalents; and such modifications or replacements do not deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A filter plug wrap glue detection device, characterized by: The invention comprises a signal processing part (4), an alarm part, a glue coating part (11) for coating a moving filter rod forming paper (3) with centerline glue, and a glue line detection part (2) that moves synchronously with the glue coating part (11) and detects a spectral signal at a glue coating position on a filter rod forming paper (3). The glue line detection part (2) comprises an optical signal transmitting module (21) and an optical signal receiving module (22) that are relatively arranged, and a detection channel (23) arranged between the optical signal transmitting module (21) and the optical signal receiving module (22) for the filter rod forming paper (3) to pass through. The optical signal transmitting module (21) transmits a first detection optical signal toward the optical signal receiving module (22). The optical signal receiving module (22) receives the first detection optical signal emitted by the optical signal transmitting module and passes through a filter rod forming paper (3). The signal processing part (4) controls the alarm part to alarm when the first detection optical signal is not within a first preset optical signal range.

2. A filter plug wrap glue detection device according to claim 1, characterized in that: The signal processing component (4) is a PLC or FPGA chip.

3. A filter plug wrap glue detection device according to claim 1 or 2, characterized in that: It also includes a mounting bracket (61) connected to the glue applicator and a mounting plate (62) connected to the mounting bracket (61), and the optical signal transmitting module (21) and the optical signal receiving module (22) are respectively connected to the mounting plate (62).

4. A filter plug wrap glue detection device according to claim 3, characterized in that: The optical signal transmitting module (21) is connected to the first mounting seat (64), and the optical signal receiving module (22) is connected to the second mounting seat (65).

5. A filter plug wrap glue detection device according to claim 1 or 2, characterized in that: A first projection of the glue outlet of the glue coating member (11) on the filter plug wrapping paper (3) is within the width range of a second projection of the detection channel (23) on the filter plug wrapping paper (3).

6. A filter plug wrap glue detection device according to claim 1 or 2, characterized in that: The optical signal transmitting module (21) comprises a transmitting housing (211) and a light source (212) arranged inside the transmitting housing (211); the optical signal receiving module (22) comprises a receiving housing (221) and a photosensitive element (222) arranged inside the receiving housing (221) for receiving light emitted by the light source (212).

7. A filter plug wrap glue detection device according to claim 6, characterized in that: The optical signal transmitting module (21) further comprises a focusing collimating lens (213) arranged in the transmitting housing (211) and located on the light output path of the light source (212); the focusing collimating lens (213) is used to define the light path of the light emitted from the light source (212).

8. The filter plug wrap glue detection device according to claim 6, characterized in that: The light source (212) is a near-infrared light source for emitting near-infrared light.

9. A filter plug wrap glue detection device according to claim 1 or 2, characterized in that: The glue coating parts (11) are multiple and are arranged along the direction in which the filter rod forming paper (3) moves. The glue line detection parts (2) are multiple and are arranged corresponding to the multiple glue coating parts (11).

10. The filter plug wrap glue detection device according to claim 6, characterized in that: The optical signal transmitting module (21) further comprises a heat sink (214) arranged on a side of the transmitting housing (211) away from the receiving housing (221).

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