Conveying device for leather product production based on visual inspection

Abstract

The invention relates to the technical field of leather detection, in particular to a conveying device for leather product production based on visual inspection, which comprises a conveyor, a main industrial camera and an auxiliary industrial camera, a support frame is fixedly connected to a rack of the conveyor, and a pair of sliding seats is transversely and slidably connected to the inner top end of the support frame; through the arrangement of a moving mechanism, a gear ring, an upper adjusting block and other structures, when a raised curled edge on the side edge of leather is detected, after one auxiliary industrial camera shoots the top of the curled edge, a laser contourgraph detects the curled edge, and the two auxiliary industrial cameras are immediately triggered to incline towards the middle and synchronously move along with a conveying line; according to the scheme, the camera always faces the shadow area, dead-corner-free image acquisition of the two sides and the top of the protrusion is completed at a time, manual face turning or shutdown for supplementary shooting is not needed, after one piece of leather is detected, the visual module can be driven to automatically reset in the gap between the two pieces of leather, interference with the next piece of material is avoided, and additional return time is also saved.

Description

Technical Field

[0001] This invention relates to the field of leather inspection technology, and in particular to a conveying device for leather product manufacturing based on visual inspection. Background Technology

[0002] In automated production lines for leather products, visual inspection has become a core component replacing manual visual inspection. High-resolution industrial vision cameras continuously photograph the leather during transport, and AI algorithms quickly identify defects such as knife marks, scratches, blemishes, and holes. The defects are then marked with A / B / C grades using inkjet printing or RFID tags. Subsequent cutting processes use these grades to avoid defective areas, maximizing material utilization. Existing equipment typically uses a combination of a fixed top-view camera and an LED surface light source. The camera shoots vertically downwards, and the light source provides supplementary illumination to generate a two-dimensional grayscale image. The software classifies the leather based on grayscale differences and texture features. For dark leather, the system automatically increases brightness or switches to polarized light to ensure clear edge contours.

[0003] However, arched protrusions (side curling or local bulging) often appear on the sides of leather. Due to the limited field of view, the base of the protrusion is in the shadow area of ​​the fixed camera. The top view film loses this part of the texture information. AI is prone to misjudging the shadow as a defect or missing a real defect. At the same time, the fixed lens cannot move with the conveyor line or tilt to fill the corner, which means that the two sides of the same protrusion need to be inspected twice, doubling the cycle time.

[0004] Therefore, a conveying device for leather product manufacturing based on visual inspection is proposed to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of the prior art by proposing a conveying device for leather product manufacturing based on visual inspection.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a conveying device for leather product production based on visual inspection, comprising a conveyor, a main industrial camera, and a secondary industrial camera. A support frame is fixedly connected to the frame of the conveyor. A pair of sliding seats are laterally slidably connected to the top of the support frame. The support frame is provided with a moving mechanism for driving the sliding seats to move laterally. Each sliding seat has a lower plate below it. A groove is formed on the side of the bottom of each of the two lower plates that is far apart. A pair of round rods are rotatably connected to the inner side of the groove. A toothed ring is fixedly connected to the outer wall of each round rod. A toothed rack is longitudinally slidably connected between the two toothed rings, and the top of the toothed rack extends through the top of the lower plate. An upper rod is fixedly connected to the side wall of the toothed rack. Side grooves are opened at both ends of the inner side of the support frame. Side blocks are laterally slidably connected to the bottom of the side grooves. Several upper adjusting blocks are fixedly connected at equal intervals to the side blocks near the upper rod. The several upper adjusting blocks are inclined to the side near the upper rod. Two pairs of auxiliary industrial cameras are provided. Each pair of auxiliary industrial cameras is vertically fixedly connected to the bottom of the round rod. One pair of main industrial cameras are provided. The main industrial cameras are fixedly connected to the bottom of the lower plate.

[0007] In the above technical solution, the upper rack meshes with the two toothed rings, and a fixing plate is fixedly connected to both sides of the outer wall of the upper rack. An upper spring is fixedly connected between the top of the fixing plate and the top of the groove.

[0008] In the above technical solution, a mounting base is provided below the lower plate, a laser profilometer is fixedly connected to the inner side of the mounting base, a connecting rod is fixedly connected between the side wall of the sliding seat and the side wall of the mounting base, the laser profilometer is electrically connected to the moving mechanism through the controller, and the laser profilometer is set between the auxiliary industrial cameras.

[0009] In the above technical solution, the moving mechanism further includes a pair of moving motors. A pair of top grooves are provided through the top of the support frame. A lead screw is rotatably connected to the inner side of each top groove. The moving motors are fixedly connected to the side wall of the support frame. The output ends of the moving motors are fixedly connected to the side wall of the lead screw through the top groove. A T-shaped block is slidably connected laterally to the inner side of each top groove. The bottom end of the T-shaped block is fixedly connected to the top of the sliding seat. The lead screw is threaded through and connected to the inner side wall of the T-shaped block.

[0010] In the above technical solution, the upper adjusting block is further positioned next to the upper rod, and a gap of the same diameter as the upper rod is left between the upper adjusting blocks.

[0011] In the above technical solution, further, a rotating seat is fixedly connected to the top of the lower plate, the rotating seat is rotatably connected to the inner side of the sliding seat, gears are rotatably connected to the side walls of the sliding seat, and the side walls of the gears pass through the inner side of the sliding seat and are fixedly connected to the rotating end of the rotating seat. Guide plates are fixedly connected to the side walls of the sliding seat. A bottom rack is provided below one of the gears, and a top rack is provided above the other gear. The bottom rack and the top rack are meshed with the corresponding gears. The bottom rack and the top rack are slidably connected to the side walls of the guide plate laterally. L-shaped frames are fixedly connected to the side walls of the bottom rack and the top rack. A lower rod is fixedly connected to the bottom end of the L-shaped frame. A top plate is fixedly connected to the top of the side groove. Upper electric telescopic cylinders are fixedly connected to both sides of the outer wall of the support frame.

[0012] In the above technical solution, a straight groove is further provided through the top of the top plate, and a storage groove is provided on the side wall of the straight groove. Several lower adjustment blocks are equidistantly arranged inside the storage groove. The lower adjustment blocks are inclined near the lower rod. A movable plate is fixedly connected between the bottoms of the lower adjustment blocks. The lower rod is inserted into the straight groove. The side wall of the guide plate is provided with a movable groove. Several lower springs are fixedly connected between the inner side of the movable groove and the side wall of the L-shaped frame. The output end of the upper electric telescopic cylinder passes through the inner side of the side groove and is fixedly connected to the side wall of the movable plate.

[0013] In the above technical solution, furthermore, both sides of the outer wall of the support frame are fixedly connected to a lower electric telescopic cylinder, and the output end of the lower electric telescopic cylinder passes through the inner side of the side groove and is fixedly connected to the side wall of the side block.

[0014] In the above technical solution, a touch sensor is fixedly connected to the top of the top plate relative to the position above the straight groove, and the touch sensor is located on the side away from the lower rod. Distance sensors are fixedly connected to the side walls of the sliding seat.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention, through the design of a moving mechanism, a toothed ring, and an upper adjusting block, enables the detection of rolled edges protruding on the side of leather. After one auxiliary industrial camera captures the top of the rolled edge, the laser profilometer detects the rolled edge and immediately triggers two auxiliary industrial cameras to tilt towards the center and move synchronously with the conveyor line. This solution ensures that the cameras are always facing the shadow area, completing the image capture of both sides and the top of the protrusion in one go without blind spots. There is no need for manual flipping or stopping the machine to retake the image. After the inspection of one piece of leather is completed, the vision module can be automatically reset at the gap between the two pieces of leather to avoid interference with the next piece of material and save extra return time.

[0016] 2. By incorporating a laser rangefinder, an upper electric telescopic cylinder, and a lower electric telescopic cylinder, this invention enables the main industrial camera and the auxiliary industrial camera to tilt towards the center and move synchronously with the conveyor line when the rolled edges on the front and back sides of the leather are being photographed and inspected. This allows the industrial cameras to capture images of the rolled edges on the front and back sides of the leather without any blind spots. Furthermore, the main and auxiliary industrial cameras have already completed the photographing of the top of the rolled edges on the front and back sides of the leather beforehand, further improving the flexibility of the device. Attached Figure Description

[0017] Figure 1 This is a partial three-dimensional structural diagram of the front of the conveying device of the present invention; Figure 2 This is a bottom-view perspective view of the support frame structure of the present invention; Figure 3 Appendix of the present invention Figure 2 A magnified view of the structure at point A in the middle; Figure 4 This is a schematic diagram of the overall appearance structure of the lower plate and the moving mechanism of the present invention; Figure 5 Appendix of the present invention Figure 4 A magnified schematic diagram of the structure at point B in the middle; Figure 6 This is a schematic diagram of the overall appearance structure of the lower plate and the top rack of the present invention; Figure 7 This is a schematic diagram of the overall appearance structure of the sliding seat, lower plate, and top plate of the present invention. Figure 8 This is a schematic diagram of a partial cross-section of the side of the lower plate of the present invention. Figure 9 This is a schematic diagram of the three-dimensional structure of the top plate, side blocks and movable plate of the present invention.

[0018] In the diagram: 1. Conveyor; 2. Main industrial camera; 3. Auxiliary industrial camera; 4. Support frame; 5. Sliding seat; 6. Lower plate; 7. Round rod; 8. Gear ring; 9. Upper rack; 10. Upper rod; 11. Side block; 12. Upper adjusting block; 13. Fixed plate; 14. Upper spring; 15. Mounting seat; 16. Laser profilometer; 17. Connecting rod; 18. Moving motor; 19. Lead screw; 20. T-block; 21. Rotating seat; 22. Gear; 23. Guide plate; 24. Bottom rack; 25. Top rack; 26. L-shaped frame; 27. Lower rod; 28. Top plate; 29. ​​Straight groove; 30. Storage groove; 31. Lower adjusting block; 32. Moving plate; 33. Upper electric telescopic cylinder; 34. Lower electric telescopic cylinder; 35. Touch sensor; 36. Distance sensor; 37. Lower spring. Detailed Implementation

[0019] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0021] In actual use, it was found that arched protrusions (side curling or local bulging) often appear on the sides of leather. Due to the limited field of view of the fixed camera, the root of the protrusion is in the shadow area. The top view lost this part of the texture information. The AI ​​is prone to misjudging the shadow as a defect or missing a real defect. At the same time, the fixed lens cannot move with the conveyor line or tilt to compensate for the corner, which means that the two sides of the same protrusion need to be inspected twice, doubling the cycle time. To solve the above problems, the following structure was invented.

[0022] like Figures 1-9 The illustrated conveying device for leather product manufacturing based on vision inspection includes a conveyor 1, a main industrial camera 2, and an auxiliary industrial camera 3. The conveyor 1 mainly consists of a motor, a conveyor belt, and conveyor rollers, and can automatically transport leather to a designated workstation. This is a mature technology in the prior art and will not be described in detail here. When the main industrial camera 2 and the auxiliary industrial camera 3 are shooting the leather online, the line light source shines evenly on the leather, and grayscale images are collected line by line. The AI ​​algorithm compares the texture in real time, marks the coordinates of defects such as knife marks, color spots, and holes, and links with a coding or labeling mechanism to make grade markings next to the defects, so as to achieve online quality judgment without stopping the machine, without shadows, and without missing detection.

[0023] A support frame 4 is fixedly connected to the frame of conveyor 1. A pair of sliding seats 5 are laterally slidably connected to the top of the support frame 4. The support frame 4 is equipped with a moving mechanism for driving the sliding seats 5 to move laterally. A lower plate 6 is provided below each sliding seat 5. A groove is opened on the side of the bottom of the two lower plates 6 that is far apart. A pair of round rods 7 are rotatably connected to the inside of the groove. A toothed ring 8 is fixedly connected to the outer wall of each round rod 7. An upper rack 9 is longitudinally slidably connected to the inside of the groove relative to the two toothed rings 8, and the top of the upper rack 9 passes through the top of the lower plate 6. The upper rack 9 is fixedly connected to the upper rod 10 on its side wall. The support frame 4 has side grooves at both ends on its inner side. The bottom of the side groove is slidably connected to a side block 11. Several upper adjustment blocks 12 are fixedly connected at equal intervals on the side block 11 near the upper rod 10. The several upper adjustment blocks 12 are inclined on the side near the upper rod 10. There are two pairs of auxiliary industrial cameras 3. Each pair of auxiliary industrial cameras 3 is vertically fixedly connected to the bottom of the round rod 7. There is one pair of main industrial cameras 2. The main industrial cameras 2 are fixedly connected to the bottom of the lower plate 6.

[0024] The upper rack 9 meshes with two toothed rings 8. Fixing plates 13 are fixedly connected to both sides of the outer wall of the upper rack 9. An upper spring 14 is fixedly connected between the top of the fixing plate 13 and the top of the groove.

[0025] A mounting base 15 is provided below the lower plate 6. A laser profilometer 16 is fixedly connected to the inner side of the mounting base 15. A connecting rod 17 is fixedly connected between the side wall of the sliding seat 5 and the side wall of the mounting base 15. The laser profilometer 16 is electrically connected to the moving mechanism through the controller. The laser profilometer 16 is set between the auxiliary industrial cameras 3. The laser profilometer 16 consists of a line laser emitter and an area array camera. The laser is projected onto the surface of the object at a fixed angle to form a bright contour line. The camera takes pictures of the deformation position of the line from the side. According to the principle of triangulation, the system calculates the height information point by point to generate the cross-sectional contour. As the object or sensor moves, multiple cross-sections are spliced ​​into a complete three-dimensional shape, realizing non-contact, high-speed, micron-level high-precision contour and defect detection. Thus, when encountering a rolled edge, a signal can be sent to the controller.

[0026] The moving mechanism includes a pair of moving motors 18. A pair of top slots are provided at the top of the support frame 4. A lead screw 19 is rotatably connected to the inner side of each top slot. The moving motors 18 are fixedly connected to the side wall of the support frame 4. The output ends of the moving motors 18 are fixedly connected to the side wall of the lead screw 19 through the top slots. A T-block 20 is slidably connected to the inner side of each top slot. The bottom end of the T-block 20 is fixedly connected to the top of the sliding seat 5. The lead screw 19 is threadedly connected to the inner side wall of the T-block 20.

[0027] The upper adjusting block 12 is located next to the upper rod 10, and there is a gap between the upper adjusting blocks 12 that is the same diameter as the upper rod 10.

[0028] Both sides of the outer wall of the support frame 4 are fixedly connected to the lower electric telescopic cylinders 34. The output ends of the lower electric telescopic cylinders 34 are fixedly connected to the side wall of the side block 11 through the inner side of the side groove. When a piece of leather is inspected, the upper rod 10 moves between the upper adjusting blocks 12. When two pieces of leather pass under the sliding seat 5, the lower electric telescopic cylinders 34 are controlled to start and drive the side block 11 to move, so that multiple upper adjusting blocks 12 are moved away from the side of the upper rod 10. Then the moving motor 18 is controlled to start and drive the sliding seat 5 to reset, thereby driving the vision module to automatically reset, avoiding interference with the lower material, and saving extra return time.

[0029] During the conveying process of leather products, the leather products are placed on conveyor 1 in sequence. Under the conveyor 1, the leather passes under the main industrial camera 2 and the auxiliary industrial camera 3 on the support frame 4 for visual quality inspection. During this process, the main industrial camera 2 mainly takes pictures and inspects the middle part of the leather, while the auxiliary industrial camera 3 takes pictures and inspects the side of the leather in more detail. During the inspection, the laser profilometer 16 will detect the flatness of the leather. When the rolled surface of the leather passes under the sliding seat 5, since the laser profilometer 16 is located between the two auxiliary industrial cameras 3, one of the auxiliary industrial cameras 3 will first complete the picture of the top of the rolled edge. Then the rolled edge moves to the side of the laser profilometer 16. The laser profilometer 16 detects and transmits the signal to the controller. The controller controls the moving motor 18 to start and drive the lead screw 19 to rotate. This drives the threaded T-block 20 to slide in the top groove, and at the same time drives the sliding seat 5, the lower plate 6 and the upper rod 10 to move.

[0030] During this process, since the upper rod 10 is located next to the upper adjusting block 12, and the upper rod 10 and the upper rack 9 can only slide longitudinally, the upper rod 10 will move to the inclined surface of the upper adjusting block 12 and drive the upper rack 9 to move upward. At the same time, the upper spring 14 is compressed, which in turn drives the meshing gear ring 8 to rotate, and drives the round rod 7 and the two auxiliary industrial cameras 3 to rotate downward to the side closer to each other. At this time, the sliding seat 5 will move at the same speed as the conveyor 1 and complete the angle adjustment of the auxiliary industrial cameras 3, thereby realizing the following shooting of the leather edge, avoiding the phenomenon of the leather being conveyed away after the adjustment is completed, and no longer causing motion blur or defocus due to relative movement. The viewing angle is always facing the target, and the shadow area is captured in one shot without stopping or reshooting, with zero loss of speed.

[0031] During this process, the upper rod 10 moves to the top of the upper adjustment block 12. As the sliding seat 5 continues to move, it causes the upper rod 10 to fall from the top of the upper adjustment block 12, relieving the pressure on the upper rod 10. Then, under the elastic force of the upper spring 14, it is pulled back to its original position, and the auxiliary industrial camera 3 is also reset, thus completing the shooting. The auxiliary industrial camera 3 is fixed in the adjusted position. Subsequently, when a curled edge is detected, the controller will control the moving motor 18 to start repeating the above operation for detection. Moreover, the auxiliary industrial camera 3 is kept vertical for shooting. The optical axis of the auxiliary industrial camera 3 is orthogonal to the leather surface, there is no perspective distortion in the field of view, the pixel resolution is uniform, the grayscale contrast is the highest, and the AI ​​algorithm can directly judge defects based on the two-dimensional image without perspective correction. The detection speed is faster, the data volume is smaller, and the false judgment rate is lower. When a curled edge is encountered, the camera is tilted instantly to reshoot. This retains the high precision advantage of vertical shooting while avoiding image stretching, edge omissions, and additional computing power burden caused by tilting throughout the process, achieving both straight high precision and no blind spots for curled edges.

[0032] In summary, through the above structural design, when inspecting the rolled edge of the leather side protrusion, after one of the auxiliary industrial cameras 3 has taken a picture of the top of the rolled edge, the laser profilometer 16 detects the rolled edge and immediately triggers the two auxiliary industrial cameras 3 to tilt towards the center and move synchronously with the conveyor line. This solution ensures that the camera is always facing the shadow area, completing the image acquisition of both sides and the top of the protrusion in one go without blind spots, without the need for manual flipping or stopping the machine to retake the picture. After the inspection of one piece of leather is completed, the vision module can be automatically reset at the gap between the two pieces of leather to avoid interference with the next piece of material and save extra return time.

[0033] Based on the above embodiments, it was found during use that the above structure can only follow the curled edges of the leather on both sides for shooting. However, leather has four sides, and it is not possible to follow the curled edges of the front and back sides of the leather for shooting, which is quite limited. In order to solve the above problems, the above structure has been further improved.

[0034] A rotating seat 21 is fixedly connected to the top of the lower plate 6. The rotating seat 21 is rotatably connected to the inner side of the sliding seat 5. Gears 22 are rotatably connected to the side walls of the sliding seat 5. The side walls of the gears 22 pass through the inner side of the sliding seat 5 and are fixedly connected to the rotating end of the rotating seat 21. Guide plates 23 are fixedly connected to the side walls of the sliding seat 5. A bottom rack 24 is provided below one gear 22, and a top rack 25 is provided above the other gear 22. The bottom rack 24 and the top rack 25 are meshed with the corresponding gears 22. The bottom rack 24 and the top rack 25 are slidably connected to the side walls of the guide plate 23 laterally. L-shaped frames 26 are fixedly connected to the side walls of the bottom rack 24 and the top rack 25. A lower rod 27 is fixedly connected to the bottom end of the L-shaped frame 26. A top plate 28 is fixedly connected to the top of the side groove. Upper electric telescopic cylinders 33 are fixedly connected to both sides of the outer wall of the support frame 4.

[0035] A straight groove 29 is provided through the top of the top plate 28. A storage groove 30 is provided on the side wall of the straight groove 29. Several lower adjustment blocks 31 are equidistantly arranged inside the storage groove 30. The lower adjustment blocks 31 are inclined on the side near the lower rod 27. A movable plate 32 is fixedly connected between the bottom of the lower adjustment blocks 31. The lower rod 27 is inserted into the inside of the straight groove 29. The guide plate 23 has a movable groove on its side wall. Several lower springs 37 are fixedly connected between the inside of the movable groove and the side wall of the L-shaped frame 26. The output end of the upper electric telescopic cylinder 33 passes through the inside of the side groove and is fixedly connected to the side wall of the movable plate 32.

[0036] A touch sensor 35 is fixedly connected to the top of the top plate 28, positioned above the straight groove 29. The touch sensor 35 is located on the side away from the lower rod 27. Distance sensors 36 are fixedly connected to the side walls of the sliding seat 5. The distance sensors 36 detect whether the leather has reached its end by emitting frequency-modulated continuous waves and measuring distance changes. The auxiliary industrial camera 3 and the main industrial camera 2 need to be controlled to rotate and capture images of the rolled edges on both sides of the leather. The touch sensor 35 is electrically connected to the conveyor 1, the distance sensor 36, and the moving motor 18 via a controller, enabling the lower rod 27 to move to the end of the straight groove 29 when inspecting a piece of leather. When the L-shaped frame 26 touches the touch sensor 35, but the distance sensor 36 does not send a signal, the controller will control the conveyor 1 to stop running and control the moving motor 18 to start reversing, driving the sliding seat 5 to reset, thereby ensuring the normal operation of subsequent equipment. When the distance sensor 36 detects that the leather has been conveyed from below and the shooting is completed, it first controls the upper electric telescopic cylinder 33 and the lower electric telescopic cylinder 34 to pull back the moving plate 32 and the side block 11, and then controls the moving motor 18 to start and drive the sliding seat 5 to reset in the gap between the two pieces of leather, avoiding interference with the next piece of material and saving extra return time.

[0037] When the leather moves to the front and back sides below the sliding seat 5, the distance sensor 36 detects the change in height and transmits the signal to the controller. The controller controls the lower electric telescopic cylinder 34 to start and drive the side block 11 and the upper adjusting block 12 to move away from the side of the upper rod 10 (to avoid affecting the flipping of the upper rod 10). At the same time, the controller controls the upper electric telescopic cylinder 33 to start and push the moving plate 32 and the lower adjusting block 31 to move, so that multiple lower adjusting blocks 31 move into the straight groove 29. Then, the controller controls the moving motor 18 to start and drive the sliding seat 5 to move. At this time, the sliding seat 5, the guide plate 23, the L-shaped frame 26 and the lower rod 27 will move. At the same time, the lower rod 27 will slide in the straight groove 29. Since the top rack 25 and the bottom rack 24 can only slide laterally on the guide plate 23, when the lower rod 27 moves to the lower adjusting block 31, it will be squeezed by the inclined surface of the lower adjusting block 31, so that the lower rod 27 moves to the side of the upper electric telescopic cylinder 33.

[0038] Simultaneously, the L-shaped frame 26, top rack 25, and bottom rack 24 move, stretching the lower spring 37. The movement of the top rack 25 and bottom rack 24 then drives the meshing gears 22 to rotate. Since the top rack 25 and bottom rack 24 are located on the upper and lower sides of the two gears 22 respectively, they drive the two gears 22 to rotate towards each other. This simultaneously causes the rotating seat 21 and lower plate 6 to flip towards the center, and also causes the main industrial camera 2 and auxiliary industrial camera 3 to flip. At this time, the sliding seat 5 follows the conveyor. The conveyor belt moves synchronously, thereby enabling the main industrial camera 2 and the auxiliary industrial camera 3 to adjust and shoot as they move along the conveyor line. During the shooting process, the lower rod 27 moves to the side wall of the lower adjustment block 31. After the shooting is completed, the lower rod 27 moves out from the side wall of the lower adjustment block 31 (although the upper adjustment block 12 moves away at this time, the upper adjustment block 12 and the lower adjustment block 31 have the same length, so the upper rod 10 will also move to the gap between the upper adjustment blocks 12 to ensure the normal following and flipping shooting of the rolled edges on both sides). The pressure on the lower rod 27 is released.

[0039] Then, under the elastic force of the lower spring 37, the device is pushed to reset, and the moving motor 18 stops running. The main industrial camera 2 and the auxiliary industrial camera 3 are positioned at this location. The main industrial camera 2 then continues to shoot, shooting the top front of the leather (shooting the top back of the leather is completed before flipping and shooting). Finally, the controller controls the upper electric telescopic cylinder 33 to start, driving the moving plate 32 and the lower adjusting block 31 to reset. Thus, when the two sides are flipped and shot, the lower rod 27 will slide in the straight groove 29. After the upper rod 10 moves on the upper adjusting block 12, the lower rod 27 also moves to the lower adjusting block 31. The upper electric telescopic cylinder 33 can be controlled to start at any time to push the lower adjusting block 31 into the straight groove 29 for operation.

[0040] In summary, through the design of the above structure, when shooting and detecting the rolled edges on the front and back sides of the leather, the main industrial camera 2 and the auxiliary industrial camera 3 can be triggered to tilt towards the center and move synchronously with the conveyor line. This allows the industrial cameras to shoot the rolled edges on the front and back sides of the leather without blind spots. Moreover, before this, the main industrial camera 2 and the auxiliary industrial camera 3 have already completed the shooting of the top of the rolled edges on the front and back sides of the leather, further improving the flexibility of the device.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of the present invention.

[0042] 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 the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed.

Claims

1. A conveying device for leather product production based on visual inspection, comprising a conveyor (1), a main industrial camera (2) and a secondary industrial camera (3), characterized in that: The frame of the conveyor (1) is fixedly connected with a support frame (4), a pair of sliding seats (5) are slidably connected to the inner top end of the support frame (4), a moving mechanism is arranged on the support frame (4) for driving the sliding seats (5) to move laterally, a lower plate (6) is arranged below each of the sliding seats (5), recesses are formed in the bottom end of the two lower plates (6) and away from each other, a pair of round rods (7) are rotatably connected to the inner side of the recesses, tooth rings (8) are fixedly connected to the outer wall of the round rods (7), an upper rack (9) is slidably connected longitudinally between the two tooth rings (8) on the inner side of the recess, the top end of the upper rack (9) penetrates through the top end of the lower plate (6), an upper rod (10) is fixedly connected to the side wall of the upper rack (9), side grooves are formed in the inner side of the support frame (4) at both ends, side blocks (11) are slidably connected to the bottom end of the side grooves, a plurality of upper adjusting blocks (12) are fixedly connected to the side of the upper rod (10) away from the side block (11) at equal intervals, the upper adjusting blocks (12) are arranged obliquely on the side of the upper rod (10) away from the side block (11), the auxiliary industrial cameras (3) are arranged in two pairs, each pair of the auxiliary industrial cameras (3) is perpendicularly fixedly connected to the bottom end of the round rod (7), and the main industrial cameras (2) are arranged in one pair, each of the main industrial cameras (2) is fixedly connected to the bottom end of the lower plate (6).

2. A conveying device for leather production based on visual detection according to claim 1, characterized in that: The upper rack (9) is in mesh with the two tooth rings (8), and a fixed plate (13) is fixedly connected to the outer wall of the upper rack (9) on both sides.

3. The conveying device for leather production based on visual inspection according to claim 1, characterized in that: A mounting seat (15) is arranged below the lower plate (6), a laser contour instrument (16) is fixedly connected to the inner side of the mounting seat (15), a connecting rod (17) is fixedly connected between the side wall of the sliding seat (5) and the side wall of the mounting seat (15), the laser contour instrument (16) is electrically connected between the controller and the moving mechanism, and the laser contour instrument (16) is arranged between the auxiliary industrial cameras (3).

4. The conveying device for leather production based on visual inspection according to claim 1, characterized in that: The moving mechanism comprises a moving motor (18), the moving motor (18) is arranged in a pair, a pair of top grooves are formed in the top end of the support frame (4), a screw rod (19) is rotatably connected to the inner side of each of the top grooves, the moving motor (18) is fixedly connected to the side wall of the support frame (4), the output end of the moving motor (18) is fixedly connected to the side wall of the screw rod (19) through the top groove, a T-shaped block (20) is slidably connected to the inner side of each of the top grooves, the bottom end of the T-shaped block (20) is fixedly connected to the top end of the sliding seat (5), and the screw rod (19) is threadedly connected to the inner side wall of the T-shaped block (20).

5. The conveying device for leather production based on visual inspection according to claim 1, characterized in that: The upper adjusting blocks (12) are arranged beside the upper rod (10), and a gap with the same diameter as the upper rod (10) is left between the upper adjusting blocks (12).

6. The conveying device for leather production based on visual inspection according to claim 1, characterized in that: The lower plate (6) top fixedly connected has the rotating seat (21), the rotating seat (21) is rotatably connected in the inner side of sliding seat (5), the sliding seat (5) side wall is rotatably connected with gear (22), and the gear (22) side wall passes through the inner side of sliding seat (5) and is fixedly connected with the rotating end of rotating seat (21), the sliding seat (5) side wall is fixedly connected with the guide plate (23), one of the gear (22) below is equipped with bottom rack (24), another gear (22) top is equipped with top rack (25), and the bottom rack (24) and top rack (25) are rotatably connected with the corresponding gear (22) between each other, and the bottom rack (24) and top rack (25) are transversely connected in the side wall of guide plate (23), the bottom rack (24) and top rack (25) side wall are fixedly connected with L-shaped frame (26), the L-shaped frame (26) bottom is fixedly connected with lower pole (27), the side groove top is fixedly connected with top plate (28), the support frame (4) outer wall both sides are fixedly connected with upper electric telescopic cylinder (33).

7. A conveying device for leather production based on visual inspection according to claim 6, characterized in that: The top plate (28) top is connected with the straight groove (29) of being set up, the straight groove (29) side wall is set up with the receiving groove (30), the receiving groove (30) inner side is equidistantly provided with a plurality of lower adjusting blocks (31), a plurality of lower adjusting blocks (31) are inclined to be set up close to the side of lower pole (27), the lower adjusting block (31) bottom is fixedly connected with the moving plate (32), the lower pole (27) is inserted in the inner side of straight groove (29), the guide plate (23) side wall is set up with the moving groove, the moving groove inner side and the side wall of L-shaped frame (26) are fixedly connected with a plurality of lower springs (37), the output end of upper electric telescopic cylinder (33) is fixedly connected in the side wall of moving plate (32) through the inner side of side groove.

8. The conveying device for leather production based on visual inspection according to claim 1, characterized in that: The support frame (4) outer wall both sides are fixedly connected with lower electric telescopic cylinder (34), the output end of lower electric telescopic cylinder (34) is fixedly connected in the side wall of side block (11) through the inner side of side groove.

9. The conveying device for leather production based on visual inspection according to claim 6, characterized in that: The top plate (28) top is fixedly connected with touch sensor (35) relative to the position above straight groove (29), and the touch sensor (35) is set up on the side away from lower pole (27), the sliding seat (5) side wall is fixedly connected with distance measuring sensor (36).

Images