Tow joint detection device

Abstract

The utility model discloses a tow joint detection device. The device is arranged between an air opener and a fiber opening gluing machine. The tow joint detection device comprises a camera obscura and an industrial personal computer; an upper shell and a lower shell are arranged in the camera obscura, a gap allowing tows to pass through is formed between the upper shell and the lower shell, and the side faces, facing the gap, of the upper shell and the lower shell are transparent side faces. An image collector is arranged in the upper shell and connected with the industrial personal computer through a signal line. Whether the tows have joints or not is automatically detected before the tows enter the fiber opening and gluing machine, the industrial personal computer sends a removal signal to downstream equipment under the condition that the joints exist, automatic identification and automatic removal are achieved, serious quality accidents caused by the tow joints are avoided, the product quality of filter sticks is guaranteed, and the production efficiency is improved. And meanwhile, the tedious processes of manual shutdown, picking and the like are avoided, the labor intensity of operators is reduced, and the continuous working capacity of equipment is greatly improved.

Description

Technical Field

[0001] The present application relates to the technical field of filter rod production, and more specifically, to a tow joint detection device. Background Art

[0002] The fiber opening and gluing machine unwinds the tow band, removes curl, applies plasticizer, and reassembles it. Diacetate tow is the mainstream raw material for filter rod production (measured in bales). Each bale has a tow joint at the beginning or middle.

[0003] In order to ensure that the equipment can carry out continuous production, when replacing the yarn bundle or the yarn bundle joint, the operator needs to use adhesive tape to bond the front and back positions of the yarn bundle joint to achieve the purpose of replacing the yarn bundle auxiliary materials.

[0004] In actual production, the joints are connected with adhesive tape, which can get mixed in and must be removed. Furthermore, the tow near the joints can become soft due to the influence of the joints, and must also be removed.

[0005] In existing technology, when a tow splice is encountered, the machine operator must pay special attention, manually slow down the machine, shut down the machine, remove the tow splice and the filter rods produced before and after it, and then restart the machine. However, due to the lack of early warning and other factors, operators often forget to stop the machine to handle the splice. The splice will then continue to be produced during the filter rod forming process and flow into the next step, resulting in serious quality problems for the filter rods. Utility Model Content

[0006] The present application provides a tow joint detection device, which is arranged between an air opener and a fiber opening and gluing machine. It automatically detects whether there are joints on the tow before the tow enters the fiber opening and gluing machine. If a joint exists, the industrial computer sends a rejection signal to the downstream equipment to realize automatic identification and automatic rejection, thereby avoiding the occurrence of serious quality accidents caused by tow joints, ensuring the product quality of the filter rod, and avoiding tedious manual shutdown, picking and other processes, reducing the labor intensity of operators, and greatly improving the continuous working capacity of the equipment.

[0007] The present application provides a tow joint detection device, which is arranged between an air opener and a fiber opening and gluing machine;

[0008] The tow joint detection device includes a dark box and an industrial computer;

[0009] The dark box is provided with an upper shell and a lower shell, and a gap is provided between the upper shell and the lower shell for the wire bundle to pass through. The sides of the upper shell and the lower shell facing the gap are transparent sides; an image collector is provided in the upper shell, and the image collector is connected to the industrial computer through a signal line.

[0010] Preferably, the image collector is a CCD industrial camera.

[0011] Preferably, an LED light strip is provided in the lower shell.

[0012] Preferably, a transparent glass plate is provided in the middle of the upper shell, and the image collector is arranged above the transparent glass plate.

[0013] Preferably, a plurality of high-pressure nozzles are symmetrically provided below the transparent glass plate in the upper shell.

[0014] Preferably, a plurality of image collectors are symmetrically arranged in the upper shell.

[0015] Preferably, the industrial computer is connected to the controller signal of the molding machine.

[0016] The present application also provides a method for detecting a tow joint, comprising:

[0017] The image collector collects images of the passing tow in real time and sends the images to the industrial computer;

[0018] Use an industrial computer to process the image and determine whether the tow has a joint;

[0019] If so, a rejection signal is issued.

[0020] Preferably, there are multiple image collectors;

[0021] If the industrial computer recognizes a connector in the image of at least one image collector, a rejection signal is issued.

[0022] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and, together with the description, serve to explain the principles of the application.

[0024] Figure 1 This is a schematic diagram of the installation of the tow joint detection device provided in this application;

[0025] Figure 2 This is a structural diagram of the tow joint detection device provided in this application. DETAILED DESCRIPTION

[0026] Various exemplary embodiments of the present application 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 application.

[0027] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present disclosure, its application, or uses.

[0028] 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.

[0029] 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.

[0030] The present application provides a tow joint detection device, which is arranged between an air opener and a fiber opening and gluing machine. It automatically detects whether there are joints on the tow before the tow enters the fiber opening and gluing machine. If a joint exists, the industrial computer sends a rejection signal to the downstream equipment to realize automatic identification and automatic rejection, thereby avoiding the occurrence of serious quality accidents caused by tow joints, ensuring the product quality of the filter rod, and avoiding tedious manual shutdown, picking and other processes, reducing the labor intensity of operators, and greatly improving the continuous working capacity of the equipment.

[0031] like Figure 1 As shown, the yarn bundle joint detection device 5 provided in the present application is arranged between the air opener 3 and the fiber opening and gluing machine 8. The yarn bundle 506 is drawn out from the yarn package 1, passes through the air opener 3, and passes through the joint detection device 5 under the support of the cross arm 4, and then enters the fiber opening and gluing machine 8 for the yarn bundle opening, gluing and other processes.

[0032] Combine Figure 1 and 2 As shown, the tow joint detection device 5 includes a dark box secured to the cross arm 4 via a mounting bracket 507 and an industrial computer 510. The dark box houses an upper housing 502 and a lower housing 508. A gap is defined between the upper and lower housings 502, 508, for the passage of the tow 506. The sides of the upper and lower housings 502, 508 facing the gap are transparent. An image acquisition device 501 is secured within the upper housing 502 via a camera bracket 503, capturing images of the tow 506 through the transparent side.

[0033] As an embodiment, the image collector 501 is a CCD industrial camera.

[0034] Preferably, multiple image collectors 501 (for example, two) are symmetrically arranged in the upper housing 502. The detection coverage area of ​​multiple image collectors is wider, and longer joints (such as Figure 2 505 in FIG.

[0035] Preferably, a transparent glass plate 504 is provided in the middle of the upper shell 502, and the image collector 501 is arranged above the transparent glass plate 504. The transparent glass plate isolates the image collector 501 from the external environment, protects the internal environment of the image collector 501, and prevents dust from contaminating components such as the lens.

[0036] On the basis of the above, preferably, a plurality of high-pressure nozzles 511 are symmetrically provided below the transparent glass plate 504 in the upper shell 502 , and the transparent glass plate 504 is cleaned and blown regularly by the high-pressure nozzles 511 to ensure the clarity of the image.

[0037] Preferably, an LED light strip 509 is provided in the lower shell 508 to provide lighting for the image collector 501 and improve the accuracy of imaging. At the same time, the LED light strip is encapsulated in a dark box to prevent dust from entering the dark box and contaminating the camera lens.

[0038] The image collector 501 is connected to the industrial computer 510 via a signal line 512. The industrial computer 510 is connected to the controller of the molding machine downstream of the fiber opening and gluing machine 8 by signal.

[0039] As the tow 506 passes through the gap between the upper shell 502 and the lower shell 508, the image collector 501 takes real-time photos of the running tow 506 and transmits the monitoring data to the industrial computer 510 via the signal line 512. The industrial computer 510 processes and determines the data. If a splice is detected, the industrial computer 510 generates a rejection signal and transmits it to the forming machine. The forming machine activates the rejection solenoid valve to reject the splice and the filter rods formed before and after the splice. The rejection quantity is set by the program according to the specific situation.

[0040] Based on the above, the present application also provides a method for detecting a tow joint, comprising:

[0041] P1: The image collector collects images of the passing tow in real time and sends the images to the industrial computer.

[0042] P2: Use an industrial computer to process the image and determine whether there is a joint on the tow.

[0043] Specifically, if a joint exists on a tow, the color value and other characteristics of the joint area in the image will be different from those of the rest of the tow. The industrial computer determines whether a joint exists on the tow by identifying the area with different characteristics. It should be noted that this application uses existing image processing technology to achieve joint identification and does not improve the image processing method.

[0044] P3: If yes, a rejection signal is issued.

[0045] Preferably, there are multiple image collectors. If the industrial computer recognizes a connector in the image of at least one image collector, it sends a rejection signal.

[0046] Although some specific embodiments of the present application have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A tow joint detection device, characterized in that: Installed between the air opener and the fiber opening and gluing machine; The tow joint detection device includes a dark box and an industrial computer; The dark box is provided with an upper shell and a lower shell, and a gap is provided between the upper shell and the lower shell for the wire bundle to pass through. The sides of the upper shell and the lower shell facing the gap are transparent sides; an image collector is provided in the upper shell, and the image collector is connected to the industrial computer through a signal line.

2. The tow joint detection device according to claim 1, characterized in that: The image collector is a CCD industrial camera.

3. The tow joint detection device according to claim 1, characterized in that: An LED light strip is provided in the lower shell.

4. The tow joint detection device according to claim 1, characterized in that: A transparent glass plate is provided in the middle of the upper shell, and the image collector is arranged above the transparent glass plate.

5. The tow joint detection device according to claim 4, characterized in that: In the upper shell, a plurality of high-pressure nozzles are symmetrically arranged below the transparent glass plate.

6. The tow joint detection device according to claim 1, characterized in that: A plurality of image collectors are symmetrically arranged in the upper shell.

7. The tow joint detection device according to claim 1, characterized in that: The industrial computer is connected to the controller signal of the molding machine.

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