Image acquisition device for fabric defect detection

Abstract

The utility model belongs to the technical field of image acquisition devices, and particularly relates to an image acquisition device for fabric defect detection, which comprises a base and an image acquirer, upright posts are welded at four corners of the upper end of the base, a top plate is fixedly connected to the tops of the upright posts, and an air cylinder is fixedly mounted in the middle of the upper end of the top plate; a telescopic shaft of the air cylinder penetrates through the top plate and is in sliding connection with the top plate, the tail end of the telescopic shaft is fixedly connected with a connecting disc, and a flattening mechanism is arranged at the bottom of the connecting disc. By arranging the connecting disc which is driven by the air cylinder to ascend and descend, the flattening mechanism is arranged on the connecting disc, in the process that the flattening mechanism moves downwards along with the connecting disc, the pressing rollers in the flattening mechanism can be unfolded oppositely and deflect, in the deflection process, fabric to be detected can be flattened, and therefore wrinkles are prevented from blocking defects.

Description

Technical Field

[0001] This solution belongs to the field of image acquisition devices, specifically involving an image acquisition device for detecting defects in fabrics. Background Technology

[0002] This image acquisition device can be a device equipped with a high-resolution camera to capture images of the fabric surface. This device allows for the rapid and accurate detection of defects and flaws on the fabric surface, including tears, stains, and damage.

[0003] A search revealed a utility model patent with authorization announcement number CN201464383U, which discloses a fabric defect identification device, including an image acquisition system, an image processing system, and a defect marking system. The image acquisition system is characterized by comprising a camera located on one side of the fabric, a light source located on the other side of the fabric, and a drive mechanism for driving the camera and the light source.

[0004] In existing technologies, fabrics are prone to wrinkles during inspection, which can obstruct the view of defects and affect image acquisition. In addition, the image acquisition device is cumbersome to install, and its disassembly and maintenance will indirectly increase downtime. Utility Model Content

[0005] The purpose of this solution is to provide an image acquisition device for fabric defect detection, which solves the problem that in the existing technology, fabric wrinkles easily appear during the inspection process, which can obstruct the defects and affect image acquisition. At the same time, it also solves the problem that the image acquisition device is cumbersome to install and that the subsequent disassembly and maintenance will indirectly increase downtime.

[0006] To achieve the above objectives, this solution provides an image acquisition device for fabric defect detection, including a base and an image acquisition unit. Columns are welded to the four corners of the upper end of the base. A top plate is fixedly connected to the top of each column. A cylinder is fixedly installed in the middle of the upper end of the top plate. The telescopic shaft of the cylinder passes through the top plate and is slidably connected to it. A connecting plate is fixedly connected to the end of the telescopic shaft. A flattening mechanism is provided at the bottom of the connecting plate. A connecting column is fixedly connected to the center of the top of the connecting plate. A mounting shell is fixedly connected to the bottom of the connecting column. A motor is fixedly installed inside the mounting shell. The output shaft of the motor passes through the mounting shell and is connected to it via a bearing. A turntable is fixedly connected to the end of the output shaft. A disassembly and assembly mechanism is provided between the turntable and the image acquisition unit.

[0007] The principle of this solution is as follows: In use, the fabric to be inspected is first laid on the base. Then, the connecting plate is pushed downward by the cylinder. As the flattening mechanism moves downward with the connecting plate, the pressure rollers in the flattening mechanism will unfold in opposite directions and deflect. During this deflection, the fabric to be inspected can be flattened, thus preventing wrinkles from obscuring defects. Then, the motor drives the turntable to rotate, which in turn drives the image acquisition unit to rotate and inspect the fabric. If the image acquisition unit needs to be disassembled and repaired later, simply rotate the inner threaded sleeve counterclockwise to release the pressure on the locking pin. The locking pin will then reset under the action of the second spring and disengage from the insertion post. The image acquisition unit can then be removed together with the insertion post for repair. The operation is simple and convenient, reducing downtime.

[0008] The technical effect of this solution is as follows: by setting up a connecting plate driven by a cylinder to lift and lower, and setting up a flattening mechanism on the connecting plate, the pressure rollers in the flattening mechanism will unfold in opposite directions and deflect during the process of moving down with the connecting plate. During the deflection process, the fabric to be inspected can be flattened, thereby avoiding wrinkles from covering up defects.

[0009] By setting a mounting shell fixed by a connecting column on the connecting plate, the motor is installed inside the mounting shell, and then a turntable is set on the output shaft of the motor. The image acquisition unit can be installed on the turntable through the designed disassembly and assembly mechanism, and is located in an eccentric position. The engagement and disengagement of the locking pin and the insertion post on the image acquisition unit can be controlled by the forward and reverse internal thread sleeve, thereby achieving the purpose of facilitating quick disassembly and assembly of the image acquisition unit and reducing downtime due to maintenance in the later stage.

[0010] Furthermore, anti-slip pads are adhered to all four corners of the base, and these pads are made of rubber. The anti-slip pads provide a non-slip surface when the entire unit is placed on the ground.

[0011] Furthermore, the flattening mechanism includes a rotating arm hinged to the bottom of the connecting plate, with a pressure roller mounted at the end of the rotating arm. A limit frame is fixedly connected to the bottom of the connecting plate, and the limit frame abuts against the rotating arm. A sliding sleeve is fixedly connected to the bottom of the connecting plate, and a sliding rod is slidably connected to the inner side of the sliding sleeve. A ball head is fixedly connected to the end of the sliding rod, and the ball head abuts against the rotating arm. A spring is provided on the inner side of the sliding sleeve, with one end of the spring fixedly connected to the sliding rod and the other end fixedly connected to the inner surface of the sliding sleeve. By setting up the flattening mechanism, the fabric to be inspected can be flattened, preventing wrinkles from obscuring defects.

[0012] Furthermore, a guide block is fixedly connected to the slide rod, and the guide block is slidably connected to the sliding sleeve. The guide block guides the relative sliding between the slide rod and the sliding sleeve.

[0013] Furthermore, the disassembly and assembly mechanism includes a connecting seat fixedly connected to the bottom of the turntable. A pin is inserted into the inner side of the connecting seat, and the image acquisition device is fixedly connected to the bottom of the pin. An internally threaded sleeve is threadedly connected to the outer side of the connecting seat. A locking pin is slidably connected to the inner side wall of the connecting seat, and the locking pin passes through the connecting seat. One end of the locking pin abuts against the internally threaded sleeve, and the other end of the locking pin is inserted into the pin. A retaining ring is fixedly connected to the pin body of the locking pin, and a second spring is sleeved on the pin body. One end of the second spring is fixedly connected to the retaining ring, and the other end of the second spring is fixedly connected to the outer wall of the connecting seat. This disassembly and assembly mechanism facilitates the quick disassembly and assembly of the image acquisition device, making it convenient to use.

[0014] Furthermore, a positioning block is fixedly connected to the top of the insertion post, and the positioning block engages with the connecting seat. The positioning block serves to position the insertion post within the connecting seat.

[0015] Furthermore, a guide rod is fixedly connected to the outer wall of the connecting seat. The guide rod passes through the retaining ring and is slidably connected to the retaining ring. A limit block is fixedly connected to the end of the guide rod. Through the arrangement of the guide rod, in cooperation with the retaining ring, it guides the lateral movement of the locking pin. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0017] Figure 2 This is an embodiment of the present utility model. Figure 1 A schematic diagram of a partial structure;

[0018] Figure 3 This is an embodiment of the present utility model. Figure 1 A front sectional view;

[0019] Figure 4 This is an embodiment of the present utility model. Figure 3 Enlarged view of point A.

[0020] The following detailed explanation illustrates the specific implementation methods:

[0021] The reference numerals in the accompanying drawings of the instruction manual include: base 1, column 2, top plate 3, cylinder 4, connecting plate 41, flattening mechanism 5, connecting column 6, mounting shell 7, motor 8, disassembly and assembly mechanism 9, turntable 10, image acquisition device 11, anti-slip pad 12, rotating arm 51, pressure roller 52, limit frame 53, sliding sleeve 54, sliding rod 55, ball head 56, spring one 57, guide block 58, connecting seat 91, insertion post 92, positioning block 93, internal thread sleeve 94, locking pin 95, retaining ring 96, spring two 97, guide rod 98, and limit block 99. Detailed Implementation

[0022] The basic implementation examples are as follows: Figures 1-3 The image acquisition device for fabric defect detection includes a base 1 and an image acquisition unit 11. Columns 2 are welded to the four corners of the upper end of the base 1. A top plate 3 is fixedly connected to the top of each column 2. A cylinder 4 is fixedly installed in the middle of the upper end of the top plate 3. The telescopic shaft of the cylinder 4 passes through the top plate 3 and is slidably connected to it. A connecting plate 41 is fixedly connected to the end of the telescopic shaft. A connecting column 6 is fixedly connected to the center of the top of the connecting plate 41. A mounting shell 7 is fixedly connected to the bottom of the connecting column 6. A motor 8 is fixedly installed inside the mounting shell 7. The output shaft of the motor 8 passes through the mounting shell 7 and is connected to it via a bearing. A turntable 10 is fixedly connected to the end of the output shaft. Anti-slip pads 12, made of rubber, are adhered to the four corners of the bottom of the base 1. The anti-slip pads 12 provide an anti-slip effect when the device is placed in a stable position.

[0023] like Figure 1 , Figure 2 , Figure 3 As shown, a flattening mechanism 5 is provided at the bottom of the connecting plate 41. This mechanism flattens the fabric to be inspected, preventing wrinkles from obscuring defects. The flattening mechanism 5 includes a rotating arm 51 hinged to the bottom of the connecting plate 41, with a pressure roller 52 mounted at its end. A limit frame 53 is fixedly connected to the bottom of the connecting plate 41, abutting against the rotating arm 51. A sliding sleeve 54 is fixedly connected to the bottom of the connecting plate 41, with a sliding rod 55 slidably connected to its inner side. A ball head 56 is fixedly connected to the end of the sliding rod 55, abutting against the rotating arm 51. A spring 57 is provided inside the sliding sleeve 54, with one end fixedly connected to the sliding rod 55 and the other end fixedly connected to the inner surface of the sliding sleeve 54. A guide block 58 is fixedly connected to the rod of the sliding rod 55, slidably connected to the sliding sleeve 54. The guide block 58 guides the relative sliding between the slide rod 55 and the slide sleeve 54.

[0024] like Figure 3 , Figure 4As shown, a disassembly and assembly mechanism 9 is provided between the turntable 10 and the image acquisition device 11. The disassembly and assembly mechanism 9 facilitates the quick disassembly and assembly of the image acquisition device 11 and makes it easy to use. The disassembly and assembly mechanism 9 includes a connecting seat 91 fixedly connected to the bottom of the turntable 10. A plug 92 is inserted into the inner side of the connecting seat 91. The image acquisition device 11 is fixedly connected to the bottom of the plug 92. An internal threaded sleeve 94 is threadedly connected to the outer side of the connecting seat 91. A locking pin 95 is slidably connected inside the side wall of the connecting seat 91 and passes through the connecting seat 91. One end of the locking pin 95 abuts against the internal threaded sleeve 94, and the other end of the locking pin 95 is inserted into the plug 92. A retaining ring 96 is fixedly connected to the pin body of the locking pin 95. A second spring 97 is sleeved on the pin body of the locking pin 95. One end of the second spring 97 is fixedly connected to the retaining ring 96, and the other end of the second spring 97 is fixedly connected to the outer wall of the connecting seat 91. A positioning block 93 is fixedly connected to the top of the insertion post 92, and the positioning block 93 engages with the connecting seat 91. The positioning block 93 positions the insertion post 92 within the connecting seat 91. A guide rod 98 is fixedly connected to the outer wall of the connecting seat 91, passing through and slidably connecting with the retaining ring 96. A limit block 99 is fixedly connected to the end of the guide rod 98. The guide rod 98, in conjunction with the retaining ring 96, guides the lateral movement of the locking pin 95.

[0025] The specific implementation process of this utility model is as follows: In use, the fabric to be tested is first laid on the base 1. Then, the connecting plate 41 is pushed down by the cylinder 4. As the flattening mechanism 5 moves down with the connecting plate 41, the pressure rollers 52 in the flattening mechanism 5 will unfold in opposite directions and deflect. During the deflection process, the fabric to be tested can be flattened, thereby avoiding wrinkles from covering defects. Then, the motor 8 drives the turntable 10 to rotate, thereby driving the image acquisition device 11 to rotate, and then the fabric is tested. If the image acquisition device 11 needs to be disassembled and repaired later, simply rotate the inner threaded sleeve 94 counterclockwise to remove the squeezing force on the locking pin 95. The locking pin 95 will then be reset under the action of the spring 97 and disengage from the insertion post 92. Then the image acquisition device 11 and the insertion post 92 can be removed together for repair. The operation is simple and convenient, reducing downtime.

[0026] This solution uses a connecting plate 41 driven by a cylinder 4 to lift and lower. A flattening mechanism 5 is set on the connecting plate 41. As the flattening mechanism 5 moves down with the connecting plate 41, the pressure rollers 52 in the flattening mechanism 5 will unfold in opposite directions and deflect. During the deflection process, the fabric to be inspected can be flattened, thereby avoiding wrinkles from covering up defects.

[0027] By setting a mounting shell 7 fixed by a connecting post 6 on the connecting plate 41, the motor 8 is installed in the mounting shell 7, and then a turntable 10 is set on the output shaft of the motor 8. The image acquisition unit 11 can be installed on the turntable 10 through the designed disassembly and assembly mechanism 9, and is located in an eccentric position. The engagement and disengagement of the locking pin 95 and the insertion post 92 on the image acquisition unit 11 can be controlled by the forward and reverse internal thread sleeve 94, thereby achieving the purpose of facilitating the quick disassembly and assembly of the image acquisition unit 11 and reducing the downtime due to maintenance in the later stage.

[0028] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. An image acquisition device for detecting defects in fabrics, comprising a base and an image acquisition unit, characterized in that: The base has four columns welded to its upper corners. A top plate is fixedly connected to the top of each column. A cylinder is fixedly installed in the middle of the upper part of the top plate. The telescopic shaft of the cylinder passes through the top plate and is slidably connected to it. A connecting plate is fixedly connected to the end of the telescopic shaft. A flattening mechanism is provided at the bottom of the connecting plate. A connecting column is fixedly connected to the center of the top of the connecting plate. A mounting shell is fixedly connected to the bottom of the connecting column. A motor is fixedly installed inside the mounting shell. The output shaft of the motor passes through the mounting shell and is connected to it via a bearing. A turntable is fixedly connected to the end of the output shaft. A disassembly and assembly mechanism is provided between the turntable and the image acquisition device.

2. The image acquisition device for fabric defect detection according to claim 1, characterized in that: The base has anti-slip pads glued to all four corners of its bottom, and the anti-slip pads are made of rubber.

3. The image acquisition device for fabric defect detection according to claim 1, characterized in that: The flattening mechanism includes a rotating arm hinged to the bottom of the connecting plate, a pressure roller installed at the end of the rotating arm, a limit frame fixedly connected to the bottom of the connecting plate, the limit frame abutting against the rotating arm, a sliding sleeve fixedly connected to the bottom of the connecting plate, a sliding rod slidably connected to the inner side of the sliding sleeve, a ball head fixedly connected to the end of the sliding rod, the ball head abutting against the rotating arm, a spring one provided on the inner side of the sliding sleeve, one end of the spring one fixedly connected to the sliding rod, and the other end of the spring one fixedly connected to the inner surface of the sliding sleeve.

4. The image acquisition device for fabric defect detection according to claim 3, characterized in that: A guide block is fixedly connected to the slide rod, and the guide block is slidably connected to the slide sleeve.

5. The image acquisition device for fabric defect detection according to claim 1, characterized in that: The disassembly and assembly mechanism includes a connecting seat fixedly connected to the bottom of the turntable. A plug is inserted into the inner side of the connecting seat. The image acquisition device is fixedly connected to the bottom of the plug. An internal threaded sleeve is threadedly connected to the outer side of the connecting seat. A locking pin is slidably connected to the inner side wall of the connecting seat and passes through the connecting seat. One end of the locking pin abuts against the internal threaded sleeve, and the other end of the locking pin is inserted into the plug. A retaining ring is fixedly connected to the pin body of the locking pin. A second spring is sleeved on the pin body of the locking pin. One end of the second spring is fixedly connected to the retaining ring, and the other end of the second spring is fixedly connected to the outer wall of the connecting seat.

6. The image acquisition device for fabric defect detection according to claim 5, characterized in that: A positioning block is fixedly connected to the top of the insertion post, and the positioning block is engaged with the connecting seat.

7. An image acquisition device for fabric defect detection according to claim 5, characterized in that: A guide rod is fixedly connected to the outer wall of the connecting seat. The guide rod passes through the retaining ring and is slidably connected to the retaining ring. A limit block is fixedly connected to the end of the guide rod.

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