An on-line hot air nonwoven fabric defect detection device

Abstract

The utility model provides a kind of hot air nonwoven fabric defect on-line detection device, it is related to nonwoven fabric processing field, including base, the base is equipped with multiple auxiliary conveying roller, the middle part position of base is equipped with middle-located bin, visual inspection component is installed and connected in the middle-located bin;Preprocessing mechanism, the preprocessing mechanism includes lower shell, the lower shell is fixedly connected with base, the upper position of lower shell is equipped with combination shell, the base is fixedly connected with portal frame.The utility model moves close to lower shell by electric cylinder telescopic end drive combination shell, forms the cleaning cavity shell of opposition, the inclined conveying groove and flat guide groove inside lower shell and combination shell combination form air duct, cooperate air circulation to be realized in air duct blowing nonwoven fabric, the impurity that can be removed with air with nonwoven fabric surface carrying, effectively surface the detection accuracy of some dust impurities attached to nonwoven fabric defect.

Description

Technical Field

[0001] This utility model relates to the field of nonwoven fabric processing, and in particular to an online defect detection device for hot air nonwoven fabric. Background Technology

[0002] Hot-air nonwoven fabric, a common type of nonwoven material, has wide applications in medical and health fields, packaging materials, and clothing. Its production process typically involves bonding fibers together using hot air to form a continuous fabric-like material. During the production of hot-air nonwoven fabric, defects such as holes, stains, wrinkles, and impurities may appear on the surface due to various factors including raw materials, production equipment, and process parameters. These defects not only affect the appearance quality of the hot-air nonwoven fabric but may also reduce its performance, failing to meet the quality requirements of relevant industries. Therefore, defect detection of hot-air nonwoven fabric is a crucial step in ensuring product quality.

[0003] Currently, the main method for detecting defects in hot-air nonwoven fabrics utilizes high-definition visual detectors for image capture. Traditional visual detectors rely primarily on single image acquisition and processing techniques to directly inspect the nonwoven fabric surface. However, due to the complex production environment of nonwoven fabrics, dust, fiber debris, and other impurities easily adhere to the fabric surface. Existing visual detectors lack targeted preprocessing mechanisms, allowing these impurities to interfere with image acquisition. This leads to confusion between impurities and defect features in the acquired images, making it easy for the visual detector to misjudge impurities as defects or miss true defects due to impurity obscuring the image, significantly reducing the accuracy and reliability of the detection.

[0004] Therefore, it is necessary to provide a new online defect detection device for hot air nonwoven fabrics to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides an online defect detection device for hot air nonwoven fabric.

[0006] This utility model provides an online defect detection device for hot air nonwoven fabric, comprising: a base, on which multiple auxiliary conveying rollers are provided, a central compartment is provided at the middle position of the base, and a visual inspection component is installed and connected in the central compartment; a pre-processing mechanism, comprising a lower shell, which is fixedly connected to the base, a combined shell is provided above the lower shell, a gantry is fixedly connected to the base, and side rods are fixedly connected to both ends of the gantry; and sliding seats are provided on both side walls of the combined shell, with the two sliding seats slidably connected to the two side rods respectively.

[0007] Preferably, an electric cylinder is installed and connected at the middle position of the gantry, and the telescopic end of the electric cylinder is fixedly connected to the upper side wall of the combined shell.

[0008] Preferably, both the lower shell and the combined shell are provided with inclined conveying grooves inside, and both the lower shell and the combined shell are provided with straight guide grooves inside, with one end of each of the two straight guide grooves connected to the two inclined conveying grooves respectively.

[0009] Preferably, both the lower shell and the combined shell are provided with air inlets on their shell walls, and both the lower shell and the combined shell are provided with air outlets on their side walls. The two air inlets are respectively connected to two inclined conveying grooves, and the two air outlets are respectively connected to two straight guide grooves.

[0010] Preferably, a bottom box is fixedly connected to the side wall of the base, an internal filter is installed inside the bottom box, and a fan is installed on the upper wall of the bottom box.

[0011] Preferably, the upper wall of the bottom box is provided with an upper pipe opening, the side wall of the bottom box is provided with a side pipe opening, the upper pipe opening is connected to the air inlet of the fan, the side pipe opening is connected to two air outlets through two first connecting pipes, the air outlet of the fan is connected to two air inlets through two second connecting pipes, and a sliding drawer is provided at the lower end of the bottom box.

[0012] Compared with related technologies, the online defect detection device for hot air nonwoven fabric provided by this utility model has the following beneficial effects:

[0013] This utility model uses the telescopic end of an electric cylinder to drive the combined shell to slide down relative to the two side rods, so that the combined shell moves closer to the lower shell to form an opposing cleaning chamber shell. The lower shell and the inclined conveying groove and straight guide groove inside the combined shell form an air duct. With the airflow circulation, the non-woven fabric is blown in the air duct, and the impurities carried on the surface of the non-woven fabric can be removed with the air. This effectively removes some dust and impurities attached to the surface of the non-woven fabric that affect the accuracy of non-woven fabric defect detection.

[0014] 2. This utility model uses a fan to create a circulating airflow, which allows pressurized air in the inclined conveying trough to initially clean the surface of the non-woven fabric. Larger dust particles and impurities are blown up, collected and concentrated in the straight guide trough, and then discharged from the air outlet. Combined with the built-in filter installed inside the bottom box, impurities in the discharged air can be filtered, which greatly improves the cleaning effect, ensures the cleanliness of the non-woven fabric surface, provides good conditions for subsequent defect detection, and ensures good product quality. Attached Figure Description

[0015] Figure 1 A schematic diagram of a preferred embodiment of this utility model;

[0016] Figure 2 forFigure 1 A schematic diagram of the cross-sectional structure of the combined shell shown;

[0017] Figure 3 for Figure 1 The diagram shows the structure at point A.

[0018] The following are the labels in the diagram: 1. Base; 2. Auxiliary conveyor roller; 3. Central compartment; 31. Vision inspection component; 4. Lower shell; 41. Combined shell; 42. Gantry; 43. Side rod; 44. Electric cylinder; 5. Inclined conveyor trough; 51. Straight guide trough; 6. Air inlet; 61. Air outlet; 7. Bottom box; 71. Built-in filter; 72. Fan; 8. Top pipe port; 81. Side pipe port; 9. Sliding drawer. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Please refer to the following: Figures 1 to 3 A hot air nonwoven fabric defect online detection device includes: a base 1, on which multiple auxiliary conveying rollers 2 are provided, and a central chamber 3 is provided at the middle position of the base 1, in which a visual inspection component 31 is installed and connected; a pre-processing mechanism, including a lower shell 4, which is fixedly connected to the base 1, and a combined shell 41 is provided above the lower shell 4. A gantry 42 is fixedly connected to the base 1, and side rods 43 are fixedly connected to both ends of the gantry 42. Slides are provided on both side walls of the combined shell 41, and the two slides are slidably connected to the two side rods 43 respectively.

[0021] In the specific implementation process, such as Figure 1 and Figure 2 As shown, an electric cylinder 44 is installed and connected at the middle position of the gantry 42, and the telescopic end of the electric cylinder 44 is fixedly connected to the upper shell wall of the combined shell 41.

[0022] It should be noted that: the telescopic end of the electric cylinder 44 drives the combined shell 41 to slide downward relative to the two side rods 43, so that the combined shell 41 moves closer to the lower shell 4 to form an opposing cleaning chamber shell. By utilizing the gas delivery channels inside the lower shell 4 and the combined shell 41, it is ensured that the non-woven fabric can be pre-treated.

[0023] refer to Figure 2 As shown, both the lower shell 4 and the combined shell 41 are provided with inclined conveying grooves 5 inside, and both the lower shell 4 and the combined shell 41 are provided with straight guide grooves 51 inside. One end of each of the two straight guide grooves 51 is connected to the two inclined conveying grooves 5.

[0024] It should be noted that the inclined design of the inclined conveying trough 5 is conducive to the airflow impacting the non-woven fabric surface at an inclined angle, exerting force on dust and impurities from multiple directions, making it easier for them to detach from the non-woven fabric surface; while the straight guide trough 51 plays the role of guiding and gathering the airflow, so that the airflow carrying impurities can flow to the air outlet 61 in an orderly manner for discharge. The two work together to form an efficient impurity cleaning channel.

[0025] refer to Figure 1 and Figure 2 As shown, both the lower shell 4 and the combined shell 41 are provided with air inlets 6 on their shell walls, and both the lower shell 4 and the combined shell 41 are provided with air outlets 61 on their side walls. The two air inlets 6 are respectively connected to the two inclined conveying grooves 5, and the two air outlets 61 are respectively connected to the two straight guide grooves 51.

[0026] It should be noted that the setting of air inlet 6 and air outlet 61 creates an airflow channel, ensuring that the pressurized air can smoothly enter the inclined conveying trough 5 to blow the non-woven fabric, while allowing the airflow carrying impurities to be discharged in time, maintaining the stable flow of airflow in the channel, and ensuring the continuous and efficient operation of impurity cleaning.

[0027] refer to Figure 1 and Figure 3 As shown, a bottom box 7 is fixedly connected to the side wall of the base 1, an internal filter 71 is installed inside the bottom box 7, and a fan 72 is installed on the upper wall of the bottom box 7.

[0028] It should be noted that: Fan 72, as the power source for airflow circulation, provides stable air pressure and air volume for the entire device, ensuring that the airflow can continuously circulate within the device;

[0029] The built-in filter 71 plays a crucial role in filtering impurities, effectively intercepting dust, fiber debris and other impurities in the airflow, ensuring that the air entering the circulation is clean, and preventing impurities from re-adhering to the surface of the non-woven fabric.

[0030] refer to Figure 1 and Figure 3 As shown, the upper wall of the bottom box 7 is provided with an upper pipe port 8, and the side wall of the bottom box 7 is provided with a side pipe port 81. The upper pipe port 8 is connected to the air inlet of the fan 72. The side pipe port 81 is connected to two air outlets 61 through two first connecting pipes. The air outlet of the fan 72 is connected to two air inlets 6 through two second connecting pipes. The lower end of the bottom box 7 is provided with a sliding drawer box 9.

[0031] It should be noted that the layout of the upper pipe port 8, the side pipe port 81, and the connecting pipe forms a complete airflow circulation loop, enabling the air to be recycled under the drive of the fan 72.

[0032] The sliding drawer 9 allows staff to regularly clean the impurities accumulated in the bottom box 7, maintaining the filtration effect of the built-in filter 71 and ensuring the stable operation of the entire device.

[0033] The working principle of the hot air nonwoven fabric defect online detection device provided by this utility model is as follows: the nonwoven fabric moves on the production line and is stably conveyed by multiple auxiliary conveying rollers 2 on the base 1, so that the nonwoven fabric smoothly enters the working area of ​​the detection device.

[0034] When the nonwoven fabric enters the pre-treatment mechanism, the pre-controlled electric cylinder 44 is activated, causing its telescopic end to drive the combined shell 41 to slide downward relative to the two side rods 43. This causes the combined shell 41 to move closer to the lower shell 4, forming an opposing cleaning chamber shell. The lower shell 4 and the inclined conveying groove 5 and the straight guide groove 51 inside the combined shell 41 form a conveying channel for the airflow on the surface of the nonwoven fabric, ensuring that the nonwoven fabric can be pre-treated.

[0035] Simultaneously, the control fan 72 starts operating, and air enters the air inlet of the fan 72 from the upper port 8 of the bottom box 7. After being pressurized by the fan 72, the air enters the inclined conveying grooves 5 of the lower shell 4 and the combined shell 41 through the two air inlets 6 via the second connecting pipe. In the inclined conveying grooves 5, the air with a certain pressure performs a preliminary cleaning of the non-woven fabric surface, blowing up larger dust and impurities. The air containing impurities then enters the straight guide groove 51, where it is gathered and concentrated before being discharged from the air outlet 61. It then enters the interior of the bottom box 7 through the two first connecting pipes. The built-in filter 71 installed inside the bottom box 7 can filter the impurities in the discharged air. The filtered air can be re-inhaled by the fan 72 for recycling, while the impurities remain in the bottom box 7. The circulating airflow can effectively reduce the interference of impurities on the non-woven fabric surface on subsequent testing.

[0036] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An online defect detection device for hot air nonwoven fabric, characterized in that, include: The base (1) is provided with multiple auxiliary conveying rollers (2), and a central compartment (3) is provided in the middle of the base (1). A vision inspection component (31) is installed and connected in the central compartment (3). The pre-processing mechanism includes a lower shell (4), which is fixedly connected to a base (1). A combined shell (41) is provided above the lower shell (4). A gantry (42) is fixedly connected to the base (1). Side rods (43) are fixedly connected to both ends of the gantry (42). Slides are provided on both sides of the combined shell (41). The two slides are slidably connected to the two side rods (43) respectively.

2. The online defect detection device for hot air nonwoven fabric according to claim 1, characterized in that, An electric cylinder (44) is installed and connected at the middle position of the gantry (42), and the telescopic end of the electric cylinder (44) is fixedly connected to the upper shell wall of the combined shell (41).

3. The online defect detection device for hot air nonwoven fabric according to claim 1, characterized in that, The lower shell (4) and the combined shell (41) are both provided with inclined conveying grooves (5), and the lower shell (4) and the combined shell (41) are both provided with straight guide grooves (51). One end of each of the two straight guide grooves (51) is connected to the two inclined conveying grooves (5).

4. The online defect detection device for hot air nonwoven fabric according to claim 3, characterized in that, Both the lower shell (4) and the combined shell (41) are provided with air inlets (6) on their shell walls, and both the lower shell (4) and the combined shell (41) are provided with air outlets (61) on their side walls. The two air inlets (6) are respectively connected to two inclined conveying grooves (5), and the two air outlets (61) are respectively connected to two straight guide grooves (51).

5. The online defect detection device for hot air nonwoven fabric according to claim 1, characterized in that, A bottom box (7) is fixedly connected to the side wall of the base (1), and an internal filter (71) is installed inside the bottom box (7). A fan (72) is installed on the upper wall of the bottom box (7).

6. The online defect detection device for hot air nonwoven fabric according to claim 5, characterized in that, The bottom box (7) has an upper pipe port (8) on its upper wall and a side pipe port (81) on its side wall. The upper pipe port (8) is connected to the air inlet of the fan (72). The side pipe port (81) is connected to two air outlets (61) through two first connecting pipes. The air outlet of the fan (72) is connected to two air inlets (6) through two second connecting pipes. The bottom box (7) has a sliding drawer (9) at its lower end.

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