Pastry appearance flaw detection system

Abstract

The invention relates to the technical field of appearance detection, in particular to a pastry appearance flaw detection system. Comprising two symmetrically-arranged conveying rollers, a conveying belt used for conveying pastries is jointly installed on the conveying rollers, sliding grooves are formed in the two sides of the conveying belt, and a shaking mechanism used for shaking the pastries and a first camera used for recording videos of the shaken pastries are arranged between the two conveying rollers; the shaking mechanism designed by the invention can shake pastries in the conveying process, tiny cracks left in the pastries due to baking, forming and other processes can be completely cracked under the action of continuous shaking under the shaking of mechanical force, and the detection misjudgment phenomenon caused by crack closing is avoided; and accuracy and reliability of cake quality detection are effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of appearance detection, and in particular to a pastry appearance defect detection system. Background Art

[0002] As people's living standards improve, their focus on food safety and quality is increasing. As a common food, the appearance of pastries directly influences consumers' willingness to purchase and their perception of product quality. Furthermore, ensuring food safety relies primarily on food testing. During the production process, pastries may develop various cosmetic defects, such as surface contamination, damage, cracks, and bubbles. These defects not only affect the pastries' aesthetics but can also pose safety risks. Therefore, rigorous inspection of pastry appearance is essential.

[0003] For example, a device for detecting impurities in pastries, published as Publication No. CN220894168U, features a base with fixed side panels. A transparent slot panel and a transparent cover are installed on one side of the side panel. The transparent slot panel is tilted, and mounting blocks at its corners rotate with the side panels via a shaft at one end. A drive mechanism is located between the side panels and the shaft. A visual inspection camera is located above the transparent slot panel, and an adjustment mechanism is located between the side panels and the camera. This device can inspect for impurities all around the pastries, improving efficiency. The camera's height can also be adjusted for precise foreign object detection, making it highly practical.

[0004] In the above-mentioned prior art, although the camera is used to capture images of pastries, workers can make a preliminary assessment of surface cracks based on the photos. However, this method has significant limitations: due to the varying degrees of crack formation in pastries, some tiny cracks that are not completely cracked are difficult to clearly show in photos and can easily be mistaken for being intact. This will cause pastries with potential quality issues to flow into the subsequent packaging process. Over time or due to vibration and compression during transportation, these incompletely cracked areas may completely crack, which will not only affect the appearance of the pastries but also reduce product quality.

[0005] Based on this, and in accordance with the above-mentioned viewpoints, there is still room for improvement in the existing technology for detecting appearance defects in pastries. Summary of the Invention

[0006] In order to solve the above technical problems, the present application provides a pastry appearance defect detection system, which adopts the following technical solution: a pastry appearance defect detection system, comprising two symmetrically arranged conveyor rollers, on which a conveyor belt for conveying pastries is mounted, and sliding grooves are provided on both sides of the conveyor belt. A shaking mechanism for shaking the pastries and a camera for recording the shaken pastries are provided between the two conveyor rollers, wherein the shaking mechanism includes: The shaking plates are symmetrically arranged along the width direction of the conveyor belt and are slidably arranged inside the sliding grooves on the corresponding sides.

[0007] The driving assembly is arranged between the two conveying rollers and is used to drive the shaking plate to shake back and forth.

[0008] Preferably, support frames are provided at both ends of the conveyor roller, and the conveyor roller is installed on the support frames on the corresponding sides through bearings, and a support plate is commonly installed between the support frames distributed along the length direction of the conveyor belt, and two groups of limit columns are symmetrically arranged on the conveyor belt along its width direction, and each group of limit columns is evenly distributed along the length direction of the conveyor belt, and the adjacent limit columns in the length direction of the conveyor belt correspond to each other one by one.

[0009] Preferably, the drive assembly comprises: The driving shaft is arranged between the two supporting plates and is installed on the supporting plates on the corresponding sides through bearings, and corresponds to the two shaking plates.

[0010] There are two linkage rods, which are symmetrically arranged along the wide belt direction of the conveyor belt. They are inverted L-shaped structures and correspond one-to-one with the shaking plates. The vertical section of the linkage rod is installed at the bottom of the corresponding side shaking plate.

[0011] There are two groups of toggle rods which are symmetrically arranged along the length direction of the drive shaft. Each group of toggle rods has multiple toggle rods evenly distributed along the circumference of the drive shaft and correspond to the corresponding side linkage rods.

[0012] A supporting protrusion is provided on the opposite side of the supporting plate, and an elastic telescopic rod for resetting the linkage rod is installed between the supporting protrusion and the horizontal section of the linkage rod on the corresponding side.

[0013] Preferably, a horizontal frame is installed on the support frame corresponding to the conveying roller on either side, and a supporting elastic rod is installed on the horizontal frame. A fixed block is installed on the telescopic end of the supporting elastic rod, and a tensioning roller is installed on the opposite surface of the fixed block through a bearing, and the height of the tensioning roller is lower than the height of the conveying roller to ensure that the conveyor belt is always in a taut transmission state.

[0014] Preferably, either end of the drive shaft passes through the support plate on the corresponding side, the conveying roller close to the tensioning roller and the shaft head on the same side as the through-end of the drive shaft passes through the support frame on the corresponding side, and a linkage shaft is installed on the support plate on the corresponding side through a bearing, the linkage shaft and the through-end of the drive shaft are connected by gear meshing, and the linkage shaft and the shaft head of the through-end of the conveying roller are connected by belt drive.

[0015] Preferably, a leveling roller is provided between the two conveying rollers and on both sides of the driving shaft, and the leveling roller is mounted on the support plate through bearings.

[0016] Preferably, a rotating mechanism for performing a secondary inspection on the cakes after shaking is installed on the two supporting plates through a supporting frame, wherein the rotating mechanism includes: The supporting connecting frame is symmetrically arranged between the two support plates along the length direction of the conveying roller and is installed on the opposite surfaces of the support plates. A fixed frame is jointly installed between the two supporting connecting frames.

[0017] Rotating cylinders are evenly distributed along the length direction of the fixed frame, and are rotatably installed on the fixed frame through bearings.

[0018] The sprocket wheels are installed on the circumferential surface of the rotating cylinders and are located at the bottom of the fixed connecting frame.

[0019] Preferably, a rotating cylinder that moves up and down is installed on the top of the rotating cylinder, and a limiting rod that penetrates through the rotating cylinder is installed on the top of the rotating cylinder. The rotating cylinder and the limiting rod are in sliding fit. An annular groove for making way for the rotating cylinder is also provided on the conveyor belt.

[0020] Preferably, a plurality of annular cylinders that correspond to the rotating cylinders one by one and are concentric are installed on the top of the fixed frame. Guide grooves are provided on the annular cylinders, and guiding rods that are matched with the guide grooves are installed on the circumferential surface of the rotating cylinder.

[0021] Preferably, a U-shaped frame with a downward opening is jointly installed on the two support plates and above the shaking mechanism. A transverse plate is installed at the bottom of the horizontal section of the U-shaped frame. The first camera is installed at the bottom of the transverse plate on the side close to the shaking mechanism, and the second camera is installed at the bottom of the side of the transverse plate close to the rotating mechanism.

[0022] In summary, the present application includes at least one of the following beneficial technical effects: 1. The shaking mechanism designed in the present invention can shake the pastries during the conveying process. Under the continuous shaking effect, the tiny cracks remaining in the pastries due to processes such as baking and shaping can be completely cracked under the shaking of mechanical force, avoiding the detection misjudgment phenomenon caused by the closure of the cracks, effectively improving the accuracy and reliability of the pastry quality detection. This design can effectively avoid the risk that the cracks are further expanded or even broken due to the inevitable external forces such as shaking, friction, and collision during the packaging and transportation process, improve the integrity of the pastry finished products in the circulation link from the source, reduce the damage and loss caused by hidden cracks, and provide a more reliable quality guarantee for the subsequent packaging, warehousing, and transportation processes.

[0023] 2. In the rotating mechanism designed in this invention, the rotating cylinder can move the rotating cylinder upward during rotation, thereby driving the pastry off the conveyor belt. This process also drives the pastry to rotate, thereby dynamically adjusting the pastry's spatial position. During this process, each area of ​​its surface is sequentially exposed to the field of view of camera 2. Through this multi-dimensional motion coordination, camera 2 can dynamically capture the pastry, effectively capturing hidden areas such as the top surface and side joints that are difficult to capture in traditional static shooting modes, avoiding the problem of missing gaps due to a fixed shooting angle, and significantly improving the comprehensiveness and accuracy of pastry surface defect detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0025] Figure 2 It is a schematic diagram of the three-dimensional installation structure between the support frame, support plate and limit columns of the present invention.

[0026] Figure 3 It is a schematic diagram of the three-dimensional installation structure between the drive assembly, conveyor belt and support frame of the present invention.

[0027] Figure 4 This invention Figure 3 A partial enlarged view of point A.

[0028] Figure 5 It is a schematic diagram of the three-dimensional installation structure among the horizontal frame, supporting elastic rods and fixing blocks of the present invention.

[0029] Figure 6 It is a schematic diagram of the three-dimensional installation structure between the supporting frame and the fixed frame of the present invention.

[0030] Figure 7 This invention Figure 6 A partial enlarged view of point B.

[0031] Explanation of the accompanying drawings: 1. Conveyor roller; 11. Support frame; 111. Horizontal frame; 112. Support elastic rod; 113. Fixed block; 114. Tensioning roller; 12. Support plate; 121. Linkage shaft; 122. Profile frame; 123. Horizontal plate; 124. Camera 2; 13. Limiting column; 14. Leveling roller; 2. Conveyor belt; 3. Rocking mechanism; 31. Rocking plate; 32. Driving assembly; 321. Driving shaft; 322. Linkage rod; 323. Toggle rod; 324. Elastic telescopic rod; 4. Camera 1; 5. Rotating mechanism; 51. Supporting frame; 52. Fixed frame; 53. Rotating cylinder; 531. Rotating cylinder; 532. Rotating cylinder; 533. Annular cylinder; 534. Guide groove; 535. Guide rod; 54. Sprocket. DETAILED DESCRIPTION

[0032] The following is combined with Figures 1 to 7 This application is described in further detail.

[0033] An embodiment of the present application discloses a pastry appearance defect detection system, which can continuously shake the pastry. Under the action of continuous shaking, the tiny cracks inside the pastry remaining from baking, molding and other processes can be completely cracked under the shaking of mechanical force, avoiding detection misjudgment caused by crack closure, and effectively improving the accuracy and reliability of pastry quality detection.

[0034] Example 1:

[0035] Reference Figure 1 and Figure 2 A pastry appearance defect detection system includes two symmetrically arranged conveyor rollers 1. A conveyor belt 2 for conveying pastries is mounted on the conveyor rollers 1. Sliding grooves are provided on both sides of the conveyor belt 2. A shaking mechanism 3 for shaking the pastries and a camera 4 for recording the shaken pastries are provided between the two conveyor rollers 1. The shaking mechanism 3 includes: The shaking plates 31 are symmetrically arranged along the width direction of the conveyor belt 2 and are slidably arranged inside the sliding grooves on the corresponding sides.

[0036] The driving assembly 32 is disposed between the two conveying rollers 1 and is used to drive the shaking plate 31 to shake back and forth.

[0037] Reference Figure 2 A support frame 11 is provided at both ends of the conveyor roller 1, and the conveyor roller 1 is installed on the support frame 11 on the corresponding side through a bearing, and a support plate 12 is commonly installed between the support frames 11 distributed along the length direction of the conveyor belt 2. Two groups of limiting columns 13 are symmetrically provided on the conveyor belt 2 along its width direction. Each group of limiting columns 13 is evenly distributed along the length direction of the conveyor belt 2, and the adjacent limiting columns 13 in the length direction of the conveyor belt 2 correspond to each other one by one.

[0038] A leveling roller 14 is provided between the two conveying rollers 1 and on both sides of the driving shaft 321 , and the leveling roller 14 is mounted on the support plate 12 via bearings.

[0039] The area of ​​the conveyor belt 2 between the two flat rollers 14 is set as a shaking area, and the shaking plate 31 can slide inside the sliding groove during the movement of the conveyor belt 2. During operation, the cakes to be tested are placed in sequence inside the area formed by the four adjacent limit columns 13 on the conveyor belt 2. At this time, the conveyor roller 1 is driven to rotate by an external driving force (motor, etc.), and the conveyor belt 2 is driven to move during the rotation of the conveyor roller 1. During the movement of the conveyor belt 2, the cakes can be driven to move forward (the forward direction of the cakes is as shown in FIG. Figure 1As shown by the arrow, when the cake moves to the vicinity of the shaking area, the shaking plate 31 is driven by the driving component 32 to drive the conveyor belt 2 to shake back and forth up and down. During the process of the conveyor belt 2 shaking back and forth up and down, the cake can be driven to shake back and forth up and down.

[0040] The leveling roller 14 can block the shaking of the shaking zone during the conveying shaking process, so that the shaking of the conveyor belt 2 only exists inside the shaking zone, avoiding the shaking of the shaking zone from being transmitted to the remaining part of the conveyor belt 2, affecting the stability of the conveyor belt 2 during the conveying of cakes.

[0041] Reference Figure 3 and Figure 4 The continuous shaking action allows the tiny cracks inside the pastry left over from the baking and molding processes to be completely cracked under the mechanical shaking, avoiding the detection misjudgment phenomenon caused by the closure of the cracks, and effectively improving the accuracy and reliability of pastry quality detection. Specifically, the driving component 32 includes: The driving shaft 321 is disposed between the two support plates 12 and is mounted on the support plate 12 on the corresponding side through a bearing, and corresponds to the two shaking plates 31 .

[0042] There are two linkage rods 322 and they are symmetrically arranged along the wide width direction of the conveyor belt 2. They are inverted L-shaped structures and correspond one-to-one with the shaking plates 31. The vertical section of the linkage rod 322 is installed at the bottom of the corresponding side shaking plate 31.

[0043] There are two groups of toggle rods 323 symmetrically arranged along the length direction of the driving shaft 321 . Each group of toggle rods 323 has multiple toggle rods evenly distributed along the circumference of the driving shaft 321 and corresponds to the corresponding side linkage rods 322 .

[0044] A supporting protrusion is provided on the opposite side of the support plate 12 , and an elastic telescopic rod 324 for resetting the linkage rod 322 is installed between the supporting protrusion and the horizontal section of the linkage rod 322 on the corresponding side.

[0045] Either end of the drive shaft 321 passes through the support plate 12 on the corresponding side, and the conveying roller 1 close to the tensioning roller 114 and the shaft head on the same side as the passing end of the drive shaft 321 passes through the support frame 11 on the corresponding side. A linkage shaft 121 is installed on the support plate 12 on the corresponding side through a bearing. The linkage shaft 121 and the passing end of the drive shaft 321 are connected by gear meshing, and the linkage shaft 121 and the shaft head of the passing end of the conveying roller 1 are connected by belt drive.

[0046] During specific operation, the belt transmission method drives the linkage shaft 121 to rotate during the rotation of the corresponding conveyor roller 1, and the gear meshing method drives the drive shaft 321 to rotate during the rotation of the linkage shaft 121, and thus the drive shaft 321 can be driven without the use of external drive. The linkage shaft 121 and the drive shaft 321 are connected by gear meshing, so that the drive shaft 321 is reversed to ensure that the toggle rod 323 can press the conveyor belt 2 downward in cooperation with the linkage rod 322 to prevent the conveyor belt 2 from flipping upward and causing the pastry to overturn.

[0047] During the rotation of the driving shaft 321, the toggle rod 323 is driven to rotate circumferentially. After the toggle rod 323 contacts the horizontal section of the linkage rod 322, it drives the linkage rod 322 to move downward. During the downward movement of the linkage rod 322, the conveyor belt 2 in the shaking area is driven downward through the shaking plate 31. At this time, the elastic telescopic rod 324 is compressed. When the toggle rod 323 is disengaged from the horizontal section of the linkage rod 322, the elastic telescopic rod 324 is reset, driving the linkage rod 322 to reset synchronously, and then the linkage rod 322 drives the conveyor belt 2 in the shaking area to reset synchronously through the shaking plate 31.

[0048] When the next toggle rod 323 contacts the horizontal section of the linkage rod 322, the above action is repeated, and the conveyor belt 2 inside the shaking area can be driven to shake back and forth up and down through the shaking plate 31, so that the pastries in the shaking area can be shaken. During the shaking of the pastries, the camera 4 can shoot and detect the shaking pastries, and judge whether there are defects such as cracks on the pastries through the captured video or photos. Under the action of continuous shaking, the tiny cracks inside the pastries left over from the baking, molding and other processes can be completely cracked under the shaking of mechanical force, avoiding the detection misjudgment phenomenon caused by the closure of the cracks, and effectively improving the accuracy and reliability of pastry quality detection.

[0049] Reference Figure 5 A horizontal frame 111 is installed on the support frame 11 corresponding to the conveying roller 1 on either side, and a supporting elastic rod 112 is installed on the horizontal frame 111. A fixed block 113 is installed on the telescopic end of the supporting elastic rod 112, and a tensioning roller 114 is installed on the opposite surface of the fixed block 113 through a bearing, and the height of the tensioning roller 114 is lower than the height of the conveying roller 1 to ensure that the conveyor belt 2 is always in a taut transmission state.

[0050] When the swaying plate 31 drives the conveyor belt 2 downward, the conveyor belt 2 in the swaying zone stretches and deforms under the action of tension, instantly increasing the tension of the entire conveying system. At this point, the supporting elastic rod 112 compresses and deforms under the action of tension, driving the fixed block 113 and the tensioning roller 114 to move upward synchronously. Through the elastic restoring force of the supporting elastic rod 112 and the adaptive adjustment of the tensioning roller 114, the length change of the conveyor belt 2 caused by stretching is compensated in real time, forming a dynamic balance mechanism. This collaborative working mode can effectively suppress tension fluctuations, ensuring that the conveyor belt 2 always maintains the optimal tension state, thereby ensuring stable and reliable friction transmission performance between it and the conveyor roller 1, and avoiding malfunctions such as slipping and deviation.

[0051] Example 2:

[0052] Reference Figure 6 and Figure 7 On the basis of the first embodiment, in order to increase the inspection accuracy of cakes, the rotating mechanism 5 provided by the present invention can also perform a secondary inspection on cakes. Specifically, the two support plates 12 are jointly mounted with a rotating mechanism 5 for performing a secondary inspection on the cakes after shaking through a supporting frame 51, wherein the rotating mechanism 5 includes: The supporting connecting frames 51 are symmetrically arranged between the two supporting plates 12 along the length direction of the conveying roller 1 and are installed on the opposite surfaces of the supporting plates 12. A fixed frame 52 is commonly installed between the two supporting connecting frames 51.

[0053] There are multiple rotating cylinders 53 evenly distributed along the length direction of the fixed frame 52, and they are rotatably mounted on the fixed frame 52 through bearings.

[0054] The sprocket 54 is mounted on the circumference of the rotating cylinder 53 and is located at the bottom of the fixed connecting frame.

[0055] In order to ensure that the cakes can fall accurately in the middle of the rotating cylinder 531, the conveyor roller 1 drives the conveyor belt 2 to move, and only moves the length of the conveyor belt 2 and the adjacent limit column 13 each time to ensure that the cakes can correspond one-to-one with the rotating cylinder 531.

[0056] A rotating cylinder 531 that moves up and down is installed on the top of the rotating cylinder 53, and a limiting rod 532 that passes through the rotating cylinder 531 is installed on the top of the rotating cylinder 53. The rotating cylinder 53 and the limiting rod 532 are slidably matched. An annular groove is also provided on the conveyor belt 2 for making way for the rotating cylinder 531.

[0057] A silicone anti-skid pad is added to the top of the rotating cylinder 531, and the contact area between the anti-skid pad and the bottom surface of the pastry is large enough to ensure that the pastry will not slip when rotating.

[0058] A plurality of annular cylinders 533 corresponding to and concentric with the rotating cylinder 531 are installed on the top of the fixed frame 52. A guide groove 534 is provided on the annular cylinder 533, and a guide rod 535 matching the guide groove 534 is installed on the circumferential surface of the rotating cylinder 531.

[0059] Look back Figure 3 On the two support plates 12 and above the shaking mechanism 3, a U-shaped frame 122 with a downward opening is jointly installed. A transverse plate 123 is installed at the bottom of the horizontal section of the U-shaped frame 122, and the camera one 4 is installed at the bottom of the transverse plate 123 on the side close to the shaking mechanism 3. A camera two 124 is installed at the bottom of the side of the transverse plate 123 close to the rotating mechanism 5.

[0060] A chain is jointly installed on the sprocket 54, and the guiding groove has a helical upward structure. During specific operation, the shaken pastry continues to move to the top of the rotating cylinder 531 under the drive of the conveyor belt 2. At this time, the conveyor belt 2 stops, and the pastry is located directly above the rotating cylinder 531. Any rotating cylinder 53 is driven to rotate by an existing driving force (such as a motor). During the rotation of the rotating cylinder 5, the rotating cylinder 531 is synchronously driven to rotate by the limiting column 13. During the rotation of the rotating cylinder 531, the guide rod 535 is synchronously driven to rotate around its circumference. During the rotation of the guide rod 535, it moves upward along the guide groove 534. Therefore, during the rotation of the guide rod 535, it moves upward synchronously. During the upward movement of the guide rod 535, the rotating cylinder 531 is synchronously driven to rotate and move upward.

[0061] During the upward movement of the rotating cylinder 531, the pastry is driven to脱离 the surface of the conveyor belt 2. At this time, the rotating cylinder 531 can also drive the pastry to rotate. The corresponding pastry is still within the area formed by the limiting columns 13 on the conveyor belt 2, avoiding the risk of the pastry falling off due to centrifugal force during rotation. When the guide rod 535 leaves the guide groove, it moves on the horizontal section of the annular cylinder 533. At this time, the guide rod 535 no longer moves upward.

[0062] During the rotation of the pastry, the pastry is detected by the camera two 124 for the second time. Whether there are defects such as cracks on the pastry is judged again through the taken video or photo.

[0063] After the rotating cylinder 53 rotates one circle, the guide rod 535 synchronously falls into the guide groove, and the rotating cylinder 531 is synchronously reset, and the pastry falls back onto the conveyor belt 2. The above steps are then repeated to inspect the remaining shaken pastries, thereby achieving dynamic adjustment of the pastry's spatial position. In this process, each area of ​​its surface is sequentially exposed to the shooting field of view of the second camera 124. Through this multi-dimensional motion coordination, the second camera 124 can dynamically capture the pastries, effectively capturing hidden areas such as the top surface and side joints that are difficult to capture in traditional static shooting modes, avoiding the problem of missing gaps due to a fixed shooting angle, and significantly improving the comprehensiveness and accuracy of pastry surface defect detection.

[0064] It should be noted that the size of the cake should be smaller than the area of ​​the region formed by four adjacent limiting posts 13 on the conveyor belt 2 to ensure that the cake can rotate within the region without colliding with the corresponding limiting posts 13 .

[0065] The implementation principle of the present invention is: (1): The cakes to be inspected are placed in sequence inside the area formed by four adjacent limit posts 13 on the conveyor belt 2. At this time, the conveyor roller 1 is driven to rotate by an external driving force (motor, etc.). During the rotation of the conveyor roller 1, the conveyor belt 2 is driven to move. During the movement of the conveyor belt 2, the cakes can be driven forward.

[0066] (2): When the cake moves to the vicinity of the shaking area, the shaking plate 31 is driven by the driving component 32 to drive the conveyor belt 2 to shake back and forth. During the up and down shaking of the conveyor belt 2, the cake can be driven to shake back and forth. During the shaking of the cake, the camera 4 can shoot, detect and process the shaking cake.

[0067] (3): During the rotation of the rotating cylinder 53, the limiting column 13 synchronously drives the rotating cylinder 531 to rotate. During the rotation of the rotating cylinder 531, the guide rod 535 is synchronously driven to rotate around its circumference. During the rotation of the guide rod 535, it moves up along the guide groove 534, and then the guide rod 535 moves up synchronously during the rotation. During the upward movement of the guide rod 535, the rotating cylinder 531 is synchronously driven to rotate and move up. During the upward movement of the rotating cylinder 531, the pastry is driven to leave the surface of the conveyor belt 2. At this time, the rotating cylinder 531 can also drive the pastry to rotate.

[0068] (4): During the rotation of the pastry, the pastry is photographed and inspected twice by the camera 2 124, and the captured video or photo is used to determine whether there are defects such as cracks on the pastry.

[0069] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0070] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A pastry appearance defect detection system, comprising two symmetrically arranged conveying rollers (1), characterized in that: A conveyor belt (2) for conveying cakes is mounted on the conveyor rollers (1), and sliding grooves are provided on both sides of the conveyor belt (2). A shaking mechanism (3) for shaking the cakes and a camera (4) for recording the cakes after shaking are provided between the two conveyor rollers (1), wherein the shaking mechanism (3) includes: The shaking plate (31) is symmetrically arranged along the width direction of the conveyor belt (2) and is slidably arranged inside the sliding groove on the corresponding side; The driving assembly (32) is arranged between the two conveying rollers (1) and is used to drive the shaking plate (31) to shake back and forth.

2. A pastry appearance defect detection system according to claim 1, characterized in that: Support frames (11) are provided at both ends of the conveying roller (1), and the conveying roller (1) is installed on the support frames (11) on the corresponding side through bearings, and a support plate (12) is installed between the support frames (11) distributed along the length direction of the conveyor belt (2), and two groups of limiting columns (13) are symmetrically provided on the conveyor belt (2) along its width direction, and each group of limiting columns (13) is evenly distributed along the length direction of the conveyor belt (2), and the limiting columns (13) adjacent to each other in the length direction of the conveyor belt (2) correspond to each other.

3. The pastry appearance defect detection system according to claim 2, characterized in that: The drive assembly (32) includes: A drive shaft (321) is disposed between the two support plates (12) and is mounted on the support plate (12) on the corresponding side via a bearing, and corresponds to the two shaking plates (31); Two linkage rods (322) are provided and are symmetrically arranged along the wide width direction of the conveyor belt (2), are inverted L-shaped structures and correspond one to one with the shaking plates (31), and the vertical sections of the linkage rods (322) are installed at the bottom of the corresponding side shaking plates (31); Two groups of toggle rods (323) are provided and are symmetrically arranged along the length direction of the drive shaft (321), and each group of toggle rods (323) has a plurality of toggle rods evenly distributed along the circumference of the drive shaft (321) and corresponding to the corresponding side linkage rods (322); A supporting protrusion is provided on the opposite side of the support plate (12), and an elastic telescopic rod (324) for resetting the linkage rod (322) is installed between the supporting protrusion and the horizontal section of the linkage rod (322) on the corresponding side.

4. The pastry appearance defect detection system according to claim 3, characterized in that: A horizontal frame (111) is installed on the support frame (11) corresponding to the conveying roller (1) on either side, and a supporting elastic rod (112) is installed on the horizontal frame (111). A fixed block (113) is installed on the telescopic end of the supporting elastic rod (112), and a tensioning roller (114) is installed on the opposite surface of the fixed block (113) through a bearing. The height of the tensioning roller (114) is lower than the height of the conveying roller (1) to ensure that the conveyor belt (2) is always in a taut transmission state.

5. The pastry appearance defect detection system according to claim 4, characterized in that: Either end of the drive shaft (321) passes through the support plate (12) on the corresponding side, and the shaft head of the conveying roller (1) close to the tensioning roller (114) and on the same side as the through-end of the drive shaft (321) passes through the support frame (11) on the corresponding side. A linkage shaft (121) is installed on the support plate (12) on the corresponding side through a bearing. The linkage shaft (121) and the through-end of the drive shaft (321) are connected by gear meshing, and the linkage shaft (121) and the shaft head of the through-end of the conveying roller (1) are connected by belt transmission.

6. The pastry appearance defect detection system according to claim 3, characterized in that: A leveling roller (14) is provided between the two conveying rollers (1) and on both sides of the driving shaft (321), and the leveling roller (14) is mounted on the support plate (12) via a bearing.

7. The pastry appearance defect detection system according to claim 5, characterized in that: A rotating mechanism (5) for performing a secondary inspection on the cakes after shaking is installed on the two supporting plates (12) via a supporting connecting frame (51), wherein the rotating mechanism (5) includes: A supporting frame (51) is symmetrically arranged between the two supporting plates (12) along the length direction of the conveying roller (1) and is installed on the opposite surface of the supporting plates (12), and a fixed frame (52) is installed between the two supporting frames (51); A plurality of rotating cylinders (53) are evenly distributed along the length direction of the fixed frame (52) and are rotatably mounted on the fixed frame (52) through bearings; The sprocket (54) is mounted on the circumferential surface of the rotating cylinder (53) and is located at the bottom of the fixed frame.

8. The pastry appearance defect detection system according to claim 7, characterized in that: A rotating cylinder (531) that moves up and down is installed on the top of the rotating cylinder (53), and a limiting rod (532) that penetrates the rotating cylinder (531) is installed on the top of the rotating cylinder (53), and the rotating cylinder (53) and the limiting rod (532) are slidably matched. The conveyor belt (2) is also provided with an annular groove for giving way to the rotating cylinder (531).

9. The pastry appearance defect detection system according to claim 8, characterized in that: A plurality of annular cylinders (533) corresponding to and co-centered with the rotating cylinders (531) are mounted on the top of the fixed frame (52). Guide grooves (534) are provided on the annular cylinders (533), and guide rods (535) matching the guide grooves (534) are mounted on the circumferential surface of the rotating cylinder (531).

10. The pastry appearance defect detection system according to claim 7, characterized in that: A downward-opening shaped frame (122) is installed on the two support plates (12) and above the shaking mechanism (3). A transverse plate (123) is installed at the bottom of the horizontal section of the shaped frame (122). Camera 1 (4) is installed at the bottom of the transverse plate (123) on the side close to the shaking mechanism (3). Camera 2 (124) is installed at the bottom of the transverse plate (123) on the side close to the rotating mechanism (5).

Images