A collagen sausage casing defect detection device

Abstract

The application relates to the field of medical supplies, in particular to a casing defect detection device for collagen, which comprises a supporting plate and a water tank; a row of plugs is arranged on each side of the supporting plate, a gas inlet channel is arranged at the center position of one row of plugs, the gas inlet channel is communicated with a pipe body on the supporting plate, the end of the pipe body penetrates through the lower surface of the supporting plate downwards, a plurality of no. 1 insertion tubes opposite to the pipe body are arranged in the water tank, the supporting plate is placed in the water tank, and the no. 1 insertion tubes are inserted into the ports of the pipe body one by one; the physical principle of bubble detection is adopted to replace traditional optical visual detection, gas escapes from the defect and forms visible bubbles in water, so that the defect position can be directly and reliably indicated, the method is not interfered by the surface fold, thick layer of grease and other appearance characteristics of the casing, as long as there is a through hole or a crack, bubble signals will be generated by gas leakage, and the misjudgment problem in the existing visual detection is effectively solved.

Description

Technical Field

[0001] This invention relates to the field of medical products, specifically a device for detecting defects in collagen casings. Background Technology

[0002] Absorbable sutures are medical suture materials that can be degraded and absorbed after being implanted in the human body. They are widely used in gynecology, obstetrics, surgery and other departments for surgical procedures and soft tissue suturing, eliminating the need for suture removal. They are classified into two categories based on their raw materials: natural materials and synthetic materials.

[0003] Most absorbable sutures made of natural materials are made of catgut or collagen. However, catgut tends to cause greater tissue reaction, and foreign proteins can easily trigger antigen rejection, often resulting in inflammatory reactions such as redness, swelling, exudation, and pain. Collagen sutures, on the other hand, cause less tissue reaction, and purified collagen has better biocompatibility, resulting in a milder rejection reaction in the human body. Therefore, most absorbable sutures currently available use collagen sutures.

[0004] Currently, the industry commonly uses automated inspection devices based on machine vision to identify surface defects in collagen casings. These devices typically acquire images of the casing surface using camera arrays, and then use image processing algorithms to analyze grayscale features or texture anomalies to determine the presence of holes or defects. However, this visual inspection method has significant technical limitations in practical applications: First, the accuracy of detection is severely affected by surface conditions. During the production process of collagen casings, the surface often develops natural wrinkles due to drying and shrinkage, or has a thick layer of local fat. These surface morphological features can easily mislead optical imaging and lead to misjudgment. For example, the shadow area formed by wrinkles may be identified as a false defect of holes, while real micropores covered by a thick layer of fat may be missed because light penetration is blocked. Existing vision systems have difficulty effectively distinguishing between surface morphological interference and real structural defects, resulting in a high false detection rate and a high missed detection rate. Secondly, the detection efficiency and production capacity are limited. Existing visual inspection devices usually adopt a single-channel or single-station design, which can only accommodate one sausage casing to pass through the detection area at a time. Since collagen sausage casings are soft and easy to tangle, and the flatness of the unfolding during image acquisition must be ensured, the device is difficult to achieve parallel detection of multiple sausage casings. This single-line detection mode restricts the detection efficiency.

[0005] Therefore, a defect detection device for collagen casings is proposed to address the above problems. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides a defect detection device for collagen casing, including a tray for supporting the casing and a water tank; a row of plugs is provided on both sides of the tray, each plug is truncated cone-shaped and can be inserted into the casing port, and an air inlet channel is opened at the center of one row of plugs, the air inlet channel is connected to a tube on the tray, and the end of the tube penetrates the lower surface of the tray downward; The water tank is equipped with multiple No. 1 insertion tubes that are opposite to the pipe body. The support plate is placed in the water tank, and the No. 1 insertion tubes are inserted into the port of the pipe body one by one. A strip-shaped opening is also opened on one side of the water tank, and the strip-shaped opening is opened along the length of the water tank.

[0008] Preferably, each plug has a top tube at its tail end, a base block at the middle of the top tube, a rubber ring slidably connected to the top tube, a spring on the back of the rubber ring, the end of the spring pressing against the base block, and the rubber ring using the elastic force of the spring to squeeze and seal the end of the casing onto the plug.

[0009] Preferably, each of the top pipes has multiple negative pressure channels arranged in a circumferential array within its inner wall. One end of each negative pressure channel extends to the outer surface of the connection between the plug and the top rod, and the other end extends to the outer surface of the tail of the top pipe. Each top pipe has a fluid slip ring on its tail outer surface, and a negative pressure pipe is provided on the fluid slip ring. The end of the negative pressure pipe penetrates downward through the lower surface of the support plate and is sealed and inserted into the second insertion pipe provided in the water tank.

[0010] Preferably, each of the plugs has a radially formed annular recess at the connection point with the top tube, and one end of the negative pressure pipe extends into the recess.

[0011] Preferably, the support plate has multiple sliding grooves for the base block to slide, and a guide rod is provided below the groove opening of each sliding groove, with the guide rod passing through the base block.

[0012] Preferably, the base block has rotating grooves inside its two side walls, which extend downward through the lower surface of the base block. The rotating grooves are equipped with locking pins, the lower ends of which protrude from the lower surface of the base block and can be embedded in a fixing groove on the surface of the support plate.

[0013] Preferably, a transparent cover is rotatably connected to one length edge of the tray, and a plurality of pressure strips are provided on the inner surface of the transparent cover. The pressure strips are used to press the inflated casing below the liquid surface.

[0014] Preferably, each of the transparent cover plates has multiple sets of sliders on its outer surface. Each set of sliders is set to correspond to the pressure strip. By moving the sliders, the position of the sliders is aligned with the position of the air bubbles on the casing, and the location of the casing defects is marked.

[0015] Preferably, the bottom surface of the water tank is inclined and tilted downwards towards the strip-shaped opening.

[0016] Preferably, the lower surface of the tray has slots on both sides; the upper surface of the tray has handles on both sides, and the upper and lower trays are stacked, with the slots of the upper tray fastening to the handles of the lower tray.

[0017] The advantages of this invention are: 1. In this invention, the physical principle of bubble detection is used to replace the traditional optical visual detection. Gas escapes from the defect and forms visible bubbles in the water, thus indicating the location of the defect intuitively and reliably. This method is not affected by the morphological features such as wrinkles or thick layers of grease on the surface of the sausage casing. No matter whether the defect is located in a wrinkled or recessed area or in an area covered by grease, as long as there is a penetrating hole or crack, gas leakage will generate a bubble signal, which effectively solves the problem of misjudgment in existing visual detection and effectively improves the accuracy and reliability of the detection results. 2. In this invention, two rows of plugs are provided, which can support multiple sausage casings at the same time for defect detection. Compared with the inefficient mode of single-line inspection by existing visual inspection devices, the entire process of inflation, immersion, and leak detection of multiple sausage casings is completed simultaneously. The detection efficiency can be improved several times compared with existing single-channel inspection equipment, which can meet the high-speed production capacity requirements of modern sausage casing production lines, significantly reduce the unit inspection cost, and allow sausage casings to be pre-fitted onto the plugs for preparation, and then transferred to the water tank for inspection, which can realize a batch parallel inspection process and double the inspection efficiency. Attached Figure Description

[0018] Figure 1 This is a perspective view of the casing defect detection device of the present invention; Figure 2 This is a top view of the casing defect detection device of the present invention; Figure 3 This is a perspective view of the water tank in this invention; Figure 4 This is a perspective view of the tray in this invention; Figure 5 This is a perspective view of the transparent cover plate in this invention; Figure 6 This is a perspective view of the fit between the plug and the rubber ring in this invention; Figure 7 This is a perspective view of the connection between the plug and the top tube in this invention; Figure 8 This is a schematic diagram of the concave structure in the present invention; Figure 9 This is a cross-sectional view of the fit between the plug and the top tube in this invention; Figure 10 This is a cross-sectional view of the base block in this invention; Figure 11 This is a cross-sectional view of the water tank in this invention; Figure 12This is a schematic diagram of the pallets stacked vertically in this invention; Figure 13 This is a schematic diagram illustrating the cooperation between the bayonet and the handle in this invention.

[0019] In the diagram: 1. Support plate; 2. Water tank; 3. Plug; 4. Pipe body; 5. No. 1 insertion tube; 6. Air intake channel; 7. Strip-shaped opening; 8. Top tube; 9. Base block; 10. Rubber ring; 11. Spring; 12. Negative pressure channel; 13. Fluid slip ring; 14. Negative pressure pipe; 15. No. 2 insertion tube; 16. Recess; 17. Slide groove; 18. Guide rod; 19. Rotary groove; 20. Locking pin; 21. Fixing groove; 22. Transparent cover plate; 23. Pressure strip; 24. Slider; 25. Bayonet; 26. Handle. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0021] Reference Figure 1 - Figure 6 A defect detection device for collagen casings includes a tray 1, a water tank 2, plugs 3, tubes 4, and first insertion tubes 5. The tray 1 supports the casings. A row of plugs 3 is provided on both sides of its upper surface. Each plug 3 is frustoconical and can be inserted into the casing port. An air inlet channel 6 is opened at the center of one row of plugs 3, connecting to the tubes 4 on the tray 1. The end of the tubes 4 extends downward through the lower surface of the tray 1. Multiple first insertion tubes 5 are provided in the water tank 2, opposite to the tubes 4. The tray 1 is placed in the water tank 2, and each first insertion tube 5 is inserted into the port of the tube 4. A strip-shaped opening 7 is also opened on one side of the water tank 2, extending along the length of the water tank 2. In this embodiment of the invention, the designed support plate 1 is mainly used to support the sausage casing, such as... Figure 1 and Figure 2 As shown, multiple sausage casings can be inspected for defects at the same time on the tray 1. Specifically, first, the end of the sausage casing is put onto the plug 3. Both ends of the plug 3 are rounded to avoid scratching and damaging the sausage casing. Then, the tray 1 and the sausage casing are placed together in the water tank 2. The bottom surface of the water tank 2 and the tray 1 are marked with arrows indicating the direction. The tray 1 can be installed in the same direction. A water supply pipe is connected to the slot 7, which is connected to an external water pump. After the tray 1 is placed in, the water pump is driven, and water quickly fills the water tank 2. During the water filling process, the first insertion tube 5 is connected to the tube body 4, and the first insertion tube 5 is connected to an external air pump. The air pump injects gas into the first insertion tube 5, and then extends the tube body 4 and the air inlet channel 6 into the casing. The casing is filled with gas and expands, and comes into contact with water. If there are holes or cracks on the surface of the casing, the gas will leak from the holes or cracks and generate bubbles in the water. At this time, it can be determined that the casing has defects such as holes or cracks. This invention uses the physical principle of bubble detection to replace traditional optical visual inspection. Gas escapes from the defect and forms visible bubbles in the water, thus indicating the location of the defect intuitively and reliably. This method is not affected by the morphological features of the sausage casing surface such as wrinkles and thick layers of grease. No matter whether the defect is located in a wrinkled or recessed area or in an area covered by grease, as long as there is a penetrating hole or crack, gas leakage will generate a bubble signal, which effectively solves the problem of misjudgment in existing visual inspection and effectively improves the accuracy and reliability of the inspection results. Furthermore, it is equipped with two rows of plugs 3, which can support multiple sausage casings at the same time for defect detection. Compared with the inefficient mode of single-line inspection by existing visual inspection devices, it can simultaneously complete the entire process of inflation, water immersion and leak detection of multiple sausage casings. The detection efficiency can be increased several times compared with existing single-channel inspection equipment, meeting the high-speed production capacity requirements of modern sausage casing production lines, significantly reducing the unit inspection cost, and allowing sausage casings to be pre-loaded on plugs 3 for preparation, and then transferred to water tank 2 for inspection, enabling batch parallel inspection process and doubling the inspection efficiency.

[0022] Reference Figure 6 - Figure 9 Each plug 3 has a top tube 8 at its tail end, a base block 9 in the middle of the top tube 8, a rubber ring 10 slidably connected to the top tube 8, a spring 11 on the back of the rubber ring 10, the end of the spring 11 pressing against the base block 9, and the rubber ring 10 pressing and sealing the end of the casing onto the plug 3 by the elastic force of the spring 11. The sausage casing itself is elastic and can wrap around the plug 3. However, the stability of the wrapping is limited. If the pressure of the gas injected into the casing continues to increase, the casing will slip off the plug 3, causing the casing detection to fail. To address this, a structure is designed to further stabilize the casing. Specifically, the rubber ring 10 is first pushed backward and moves towards its adjacent base block 9. Then, the end of the casing is fitted onto the plug 3, with the edge of the casing's end extending to the back of the plug 3. After that, the rubber ring 10 is released and reset under the elastic force of the spring 11. The rubber ring 10 presses the edge of the casing's end against the back of the plug 3, further stabilizing the connection between the casing and the plug 3. At the same time, the soft compression of the casing's end by the rubber ring 10 enhances the fit between the casing's end and the plug 3, further improving the sealing between the casing and the plug 3. The rubber ring 10, in conjunction with the spring 11, can further stabilize the structure of the casing, effectively solving the problem of the casing falling off the plug 3 due to the continuous increase of internal inflation pressure. This ensures that the casing remains stably wrapped on the plug 3 during the testing process, avoiding test failure due to slippage. At the same time, the elastic sealing design can adapt to the clamping requirements of casings with different wall thicknesses and diameters, and has good compatibility and adaptability. To address the issue of air leakage at the rubber ring 10 seal due to improper assembly or uneven casing port, which may cause gaps between the casing and plug 3, inspectors can distinguish between genuine defects and seal failures using the following methods: First, observe the location of the air bubbles. If the bubbles continuously appear at the root area where the casing and plug 3 overlap, it is determined to be a leak in the seal gap. If the bubbles appear on the surface of the casing body away from the plug 3, it is determined to be a defect of holes or cracks in the casing itself. Furthermore, confirmation can be made through a secondary pressure verification method. After briefly stopping inflation, the air bubbles at the seal gap will usually disappear due to pressure balance, while at the through-hole defect, a stable air bubble flow will form due to continuous gas leakage. This self-inspection mechanism effectively eliminates the interference of seal failure on the test results, ensures the accuracy of defect judgment, and reduces the false detection rate.

[0023] Reference Figure 2 - Figure 9 Multiple negative pressure channels 12 are arranged in a circular array inside the wall of each of the top tubes 8. One end of the negative pressure channel 12 extends to the outer surface of the connection position between the plug 3 and the top rod, and the other end of the negative pressure channel 12 extends to the outer surface of the tail of the top tube 8. A fluid slip ring 13 is provided on the outer surface of the tail of each top tube 8. A negative pressure pipe 14 is provided on the fluid slip ring 13. The end of the negative pressure pipe 14 penetrates the lower surface of the support plate 1 downward and is sealed and inserted into the second insertion pipe 15 provided in the water tank 2. The tray 1 has two rows of plugs 3. One row of plugs 3 has an air intake channel 6 connected to the pipe body 4 via a top tube 8, while the other row of plugs 3 is solid and not connected to the pipe body 4. Each plug 3 has a top tube 8 fixed to its back, and each top tube 8 has a negative pressure channel 12 inside its wall. Figure 2 and Figure 6 As shown, the negative pressure channel 12 is connected to the negative pressure pipe 14 through the fluid slip ring 13; During testing, sausage casings can be pre-placed in tray 1, flattened and straightened for preparation. Then, tray 1 along with sausage casings is placed in water tank 2. The first insertion tube 5 is inserted into tube body 4, and the end of the second insertion tube 15 is also inserted into negative pressure tube 14. Next, the negative pressure pump connected to the second insertion tube 15 is started. At this time, negative pressure is generated at one end of negative pressure channel 12. During the process of putting the sausage casing on plug 3, the edge of the sausage casing port is attracted, so that the sausage casing port is narrowed and wrapped around the top tube 8. Then, the rubber ring 10 is loosened. The inner ring of the rubber ring 10 can fit over the end of the sausage casing, and the end face of the rubber ring 10 squeezes the sausage casing against the back of plug 3. This design can improve the sealing between the end of the sausage casing and plug 3, reduce the possibility of gas leakage at this position, reduce the secondary pressure test operation, save time, and improve testing efficiency.

[0024] Reference Figure 8 and Figure 9 Each of the plugs 3 and the top tube 8 has a radially formed annular recess 16 at the connection position, and one end of the negative pressure tube 14 extends into the recess 16. The recess 16 serves to make way for the casing. When the end of the casing is fitted onto the plug 3, the end of the casing will be attracted and placed in the recess 16. At this time, the end of the casing is flush with the outer surface of the top tube 8. When the rubber ring 10 squeezes the casing, the inner ring of the rubber ring 10 can effectively and completely wrap the end of the casing. The end face of the rubber ring 10 can effectively squeeze the casing against the back of the plug 3, further improving the sealing between the casing and the plug 3.

[0025] Reference Figure 4 , Figure 6 and Figure 10 The support plate 1 has multiple sliding grooves 17 for sliding of the base block 9. Each sliding groove 17 has a guide rod 18 below the groove opening, and the guide rod 18 passes through the base block 9. The base block 9 corresponding to the other row of plugs 3 is slidably connected in the slide groove 17, while the base block 9 corresponding to one row of plugs 3 is fixed on the support plate 1. By using the sliding base block 9, the distance between the two plugs 3 can be adjusted to adapt to the detection of casings of different lengths. Specifically, firstly, one end of the casing is put on the fixed plug 3, then the other end of the casing is put on the movable plug 3. Then, the movable plug 3 is adjusted, and the base block 9 corresponding to the plug 3 is moved. The base block 9 moves along the slide groove 17, so that the casing is in a taut state. After the casing is injected with gas, it can expand and come into contact with water, so that casings of different lengths can be successfully detected for defects.

[0026] Reference Figure 2 , Figure 6 and Figure 10 The base block 9 has rotating grooves 19 inside its two side walls. The rotating grooves 19 penetrate downward through the lower surface of the base block 9. A locking pin 20 is provided in the rotating grooves 19. The lower end of the locking pin 20 protrudes from the lower surface of the base block 9 and can be embedded in the fixing groove 21 opened on the surface of the support plate 1. A locking pin 20 is provided on the sliding base block 9 to lock the sliding base block 9. Specifically, when adjusting the position of the movable base block 9, the upper end of the locking pin 20 is pressed, and the lower end of the locking pin 20 disengages from the fixing groove 21 and temporarily retracts into the rotating groove 19. At this time, the base block 9 is in a free state. Moving the base block 9 makes the casing taut. Then, the locking pin 20 is released, and the locking pin 20 rotates back to its original position under the torque of the torsion spring it is connected to. The lower end of the locking pin 20 is re-embedded into the fixing groove 21, fixing the base block 9 and stabilizing the taut state of the casing. When inflating or submerging the casing later, it can still be taut and effectively contact the water, further improving the detection effect.

[0027] Reference Figure 1 - Figure 5 A transparent cover plate 22 is rotatably connected to one long edge of the tray 1. A plurality of pressure strips 23 are provided on the inner surface of the transparent cover plate 22. The pressure strips 23 are used to press the inflated casing below the liquid surface. Considering that when air is injected into the casing, the water will exert a buoyant force on the casing, causing it to float and bend, especially in the middle part of the casing where the bending is greater and the upper surface is difficult to contact with water, a transparent cover plate 22 is provided. The transparent cover plate 22 can completely press the casing into the water, and the transparent cover plate 22 will not affect the observation of air bubbles. In addition, a pressure strip 23 is provided on the transparent cover plate 22, which can embed the expanded casing into the pressure strip 23, restricting the horizontal displacement of the casing and preventing adjacent casings from sticking together, which could easily lead to misjudgment of gas leakage points.

[0028] Reference Figure 5Each of the transparent cover plates 22 has multiple sets of sliders 24 on its outer surface. Each set of sliders 24 is set to correspond to the pressure strip 23. By moving the sliders 24, the sliders 24 are aligned with the positions of the air bubbles on the casing, and the defective points of the casing are marked. The slider 24 is used to mark the location of defects on the casing. When a defect is found on the casing, the slider 24 is moved to the corresponding position. After the subsequent inspection is completed and the water is drained, the tray 1 is removed from the water tank 2. The operators then further process the casing according to the position of the slider 24, such as cutting and removing the parts with holes.

[0029] Reference Figure 11 The bottom surface of the water tank 2 is inclined and tilted downwards towards the strip-shaped opening 7; The bottom of the water tank 2 is tilted to facilitate the rapid drainage of water. After the casing has completed defect detection, the water pump switches from water injection mode to water pumping mode, and the water in the water tank 2 is quickly pumped out, or the water supply pipe is directly removed, and the water is discharged directly along the strip opening 7, which quickly drains the water and improves the detection efficiency.

[0030] Reference Figure 12 - Figure 13 The lower surface of the tray 1 has slots 25 on both sides; the upper surface of the tray 1 has handles 26 on both sides. The upper and lower trays 1 are stacked, and the slots 25 of the upper tray 1 are fastened to the handles 26 on the lower tray 1. In the preparation stage, sausage casings are placed in tray 1, then the transparent cover is closed, and then multiple trays 1 are stacked together, as shown. Figure 13 As shown, materials can be prepared in advance, saving space occupied during material preparation.

[0031] In summary, the embodiments of the present invention can effectively detect surface defects in collagen casings, thereby providing a good foundation for the subsequent manufacture of sutures and ensuring the quality of absorbable sutures.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for detecting defects in collagen casings, characterized in that: It includes a tray for supporting sausage casings and a water tank; both sides of the tray are provided with a row of plugs, each plug is truncated cone-shaped and can be inserted into the sausage casing port, and an air intake channel is opened at the center of one row of plugs, the air intake channel is connected to a tube on the tray, and the end of the tube penetrates the lower surface of the tray downward. The water tank is equipped with multiple No. 1 insertion tubes that are opposite to the pipe body. The support plate is placed in the water tank, and the No. 1 insertion tubes are inserted into the port of the pipe body one by one. A strip-shaped opening is also opened on one side of the water tank, and the strip-shaped opening is opened along the length of the water tank.

2. The collagen casing defect detection device according to claim 1, characterized in that: Each plug has a top tube at its tail end, a base block at the middle of the top tube, a rubber ring slidably connected to the top tube, a spring on the back of the rubber ring, the end of the spring pressing against the base block, and the rubber ring using the elastic force of the spring to squeeze and seal the end of the casing onto the plug.

3. The collagen casing defect detection device according to claim 2, characterized in that: Multiple negative pressure channels are arranged in a circumferential array inside the wall of each jacking pipe. One end of the negative pressure channel extends to the outer surface of the connection position between the plug and the jacking rod, and the other end of the negative pressure channel extends to the outer surface of the tail of the jacking pipe. A fluid slip ring is provided on the outer surface of the tail of each jacking pipe, and a negative pressure pipe is provided on the fluid slip ring. The end of the negative pressure pipe penetrates downward through the lower surface of the support plate and is sealed and inserted into the No. 2 insertion pipe provided in the water tank.

4. The collagen casing defect detection device according to claim 3, characterized in that: Each of the plugs has a radially annular recess at the connection point with the top pipe, and one end of the negative pressure pipe extends into the recess.

5. The collagen casing defect detection device according to claim 3, characterized in that: The support plate has multiple sliding grooves for the base block to slide, and a guide rod is provided below the groove opening of each groove, with the guide rod passing through the base block.

6. The collagen casing defect detection device according to claim 5, characterized in that: The base block has rotating grooves inside its two side walls, which extend downward through the lower surface of the base block. A locking pin is provided in the rotating groove, with the lower end of the locking pin protruding from the lower surface of the base block and able to be embedded in a fixing groove on the surface of the tray.

7. The collagen casing defect detection device according to claim 6, characterized in that: A transparent cover is rotatably connected to one length of the tray. Multiple pressure strips are provided on the inner surface of the transparent cover. The pressure strips are used to press the inflated casing below the liquid surface.

8. The collagen casing defect detection device according to claim 7, characterized in that: Each of the transparent cover plates has multiple sets of sliders on its outer surface. Each set of sliders corresponds to a pressure strip. By moving the sliders, the position of the sliders is aligned with the position of the air bubbles on the casing, thus marking the location of the casing defects.

9. The collagen casing defect detection device according to claim 3, characterized in that: The bottom surface of the water tank is inclined and tilted downwards towards the strip-shaped opening.

10. The collagen casing defect detection device according to claim 7, characterized in that: The lower surface of the tray has slots on both sides; the upper surface of the tray has handles on both sides. When the two trays are stacked, the slots of the upper tray are fastened to the handles of the lower tray.

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