Bottled seasoning defect detection system

Abstract

The invention provides a bottled seasoning defect detection system, and mainly relates to the field of package detection. A bottled seasoning defect detection system comprises a front conveyor, a rear conveyor and a material arranging device, the material arranging device is arranged between the front conveyor and the rear conveyor, and a transition platform is arranged between the tail end of the front conveyor and the starting end of the rear conveyor; at least two material arranging discs are rotationally arranged in the center of the material arranging frame, limiting grooves matched with the outer contours of the packaging bottles are formed in the material arranging discs, when the limiting grooves limit the packaging bottles, the material arranging discs do not shield labels of the packaging bottles, a butt joint mechanism is arranged on the opposite side of the material arranging device, and when the material arranging device drives the packaging bottles to pass through the transition platform, the butt joint mechanism is in butt joint with the packaging bottles. The butt joint mechanism abuts against the packaging bottles, an installation space is formed between the material arranging discs, and a CCD camera system is installed in the installation space in a cantilever mode. The bottled seasoning detection device has the beneficial effects that the bottled seasoning detection structure can be simplified, and the detection efficiency is improved.

Description

Technical Field

[0001] The invention mainly relates to the field of packaging detection, and in particular to a bottled condiment defect detection system. Background Art

[0002] For bottled condiments such as soy sauce, vinegar, cooking wine, oyster sauce, etc., in addition to conventional physical and chemical tests during production, the packaging and coding of the packaging bottles need to be tested after packaging to detect whether there are any defects in the bottle information, so as to ensure that the labels of the packaging bottles are clear and complete, and avoid defects such as fuzzy label information and omissions that may cause negative market feedback. The packaging problems that need to be tested mainly include high labels, low labels, no labels, oblique labels, cracks, tape adhesion, poor shrinkage, poor label printing, and label colors that do not correspond to the product.

[0003] In today's large-scale mass production enterprises, the backward method of visual inspection has long been eliminated, and instead an automated visual recognition system is used to detect the packaging quality of bottled condiments. However, this detection method still has problems. The packaging of condiments is a continuous process. The packaging bottles are always moving on the assembly line, and the labels on the packaging bottles have a large span. When the visual recognition equipment is installed on the side, it cannot completely cover the entire label, and there will be problems such as the bevel of the label and the adhesion of the tape. When the visual recognition equipment is installed on the top, there will be problems such as high label, low label, and poor printing. Therefore, there are currently multiple visual inspection systems, and auxiliary equipment for packaging bottle sorting to achieve surround recognition of packaging bottles to fully cover the label range of the packaging bottles. This structure is relatively redundant, the overall structure is relatively complex, and it lengthens the span of the entire production line. Summary of the invention

[0004] To address the deficiencies of the prior art, the present invention provides a bottled seasoning defect detection system, which can simplify the detection structure of the bottled seasoning and improve the detection efficiency.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions: A defect detection system for bottled condiments includes a front conveyor, a rear conveyor and a material sorter, wherein the material sorter is disposed between the front conveyor and the rear conveyor, and the front conveyor and the rear conveyor are disposed at a certain angle. The material sorter of the present invention is used to adjust the speed and gap of the packaged condiments, so as to facilitate the subsequent automatic box sealing operation by a robot arm. At the same time, in the packaging bottle detection link under the prior art, the material sorting link is also a conventional means of adjusting the packaging bottles. In the present invention, the structure of the material sorter is improved, and a visual recognition system is added to the material sorter, so that the packaging bottle detection can be completed while the material is sorted, and the two processes are integrated, the detection structure is simplified, and the detection efficiency is improved.

[0006] A transition platform is arranged between the end of the front conveyor and the starting end of the rear conveyor. The transition platform cooperates with the material sorter to support the seasoning packaging bottles rotated and transferred by the material sorter, thereby ensuring the stable transfer of the packaging bottles.

[0007] The material sorter includes a material sorting rack, a main shaft is set at the center of the material sorting rack, at least two material sorting trays are set on the main shaft, the material sorting tray has a limit groove adapted to the outer contour of the packaging bottle, the limit groove is evenly set on the material sorting tray in a circumference, the spacing between the material sorting trays is adjustable, and when the limit groove restricts the packaging bottle, the material sorting tray does not block the label of the packaging bottle. There is an installation space between the material sorting trays, and a CCD camera system is cantilevered in the installation space. The CCD camera system is used as a visual recognition system to collect image data of the label status of the packaging bottle, and transmits the data to the controller for data processing and comparison to determine whether the label status of the packaging bottle is qualified. The spacing between the material sorting trays of the present invention is adjustable, and the gap can be adjusted according to the products with different label positions, so as to have a wider range of adaptability. At the same time, the material sorting tray can be replaced to further adapt to packaging bottles of different shapes and ensure the adaptability of different condiment packaging bottles. A docking mechanism is arranged on the opposite side of the material sorter, and a buffer mechanism is arranged on the rear side of the docking mechanism. When the material sorter drives the packaging bottle to pass through the transition platform, the docking mechanism conflicts with the packaging bottle. The docking mechanism is used to cooperate with the material sorter, and the packaging bottle can rotate in a circle by contact friction, and then all the label display surfaces are rotated to the side facing the visual recognition system. The visual recognition system can completely collect complete image data of the label status, so that the label detection accuracy of the packaging bottle is higher.

[0008] A plurality of guide plates are arranged above the rear conveyor, and the guide plates divide the rear conveyor into a plurality of screening channels. At least one screening mechanism is arranged on one side of the screening channel, and the screening mechanism is used to push the defective packaging bottles to switch the screening channel. The screening channel screens the packaging bottles according to different states such as qualified products, unqualified products that can be repaired, and unqualified products that have been relabeled. Through the multi-level screening of the screening mechanism, packaging bottles with different defects can be classified and collected, so that the subsequent repair work can be carried out more smoothly.

[0009] Preferably, a positioning platform is sleeved on the spindle, and at least one fastening bolt is provided on the outer wall of the positioning platform. The positioning platform is fixed to the spindle by tightening the fastening bolt, and the material sorting tray is fixedly connected to the positioning platform by bolts. By installing the positioning platform, the material sorting tray is positioned at an installation height so that it can adapt to the label sizes of different packaging bottles without blocking the labels, which is convenient for image acquisition by the visual recognition system.

[0010] Preferably, the spindle has a guide key or a guide keyway, and the central hole of the positioning platform and the material sorting tray is provided with a matching keyway corresponding to the guide key or a matching key corresponding to the guide keyway. Through the cooperation of the key and the keyway, the material sorting tray can be accurately and quickly positioned and installed.

[0011] Preferably, the mounting cantilever of the CCD camera system extends from one side of the rear conveyor into the mounting space, and the CCD camera system is not physically connected to the material sorter. The upper and lower shielding of the material sorting tray in the present invention creates a semi-enclosed light-shielding environment for the CCD camera, which has a certain limiting effect on the interference of stray light in image recognition. The material sorter not only realizes the fixed-speed and fixed-distance sorting of packaging bottles, but also creates a physical environment for visual recognition. The present invention creatively installs the visual recognition system in conjunction with the material sorter, which simplifies the overall visual recognition structure and improves the detection efficiency.

[0012] Preferably, the docking mechanism is a docking plate, and when the material handling tray drives the seasoning bottle to rotate, the seasoning bottle and the docking plate collide with each other. Through the contact friction of the docking plate, the packaging bottle can be rotated around its own axis by the transportation of the material handling tray, so that all ranges of the label can be facing the visual recognition system for image data collection.

[0013] Preferably, the docking mechanism comprises a docking frame, a docking belt is tensioned on the docking frame, the docking belt is driven by a motor, and the rotation direction of the docking belt is opposite to the rotation direction of the material sorting plate. By setting the docking belt, the packaging bottle can be flexibly contacted with the docking mechanism, and the reverse direction of the docking belt can make the rotation speed of the packaging bottle faster, so that the data collection of the label image can be realized under a smaller displacement, thereby improving the efficiency of image recognition.

[0014] Preferably, the buffer mechanism is a plurality of damping springs, and when the material handling tray drives the seasoning bottle to rotate to a position in contact with the docking mechanism, the damping springs are compressed to provide thrust. The damping springs provide a certain amount of assistance to the docking mechanism, so that the packaging bottle can be in stable contact with the docking mechanism, and under the premise of ensuring the stable rotation of the packaging bottle, the damage to the bottle body caused by friction can be minimized to ensure product quality.

[0015] Preferably, the screening mechanism includes a counting device and a screening cylinder, and the screening mechanism has a switching gap at the position of the guide plate corresponding to the screening mechanism, so that the screening mechanism can push the packaging bottle to transfer from the switching gap to the next screening channel. The setting of multiple screening mechanisms can perform autonomous screening according to the qualification and defect pattern of the packaging bottle itself, and collect the packaging bottles with the same or similar defects, so as to facilitate the subsequent batch processing of defective packaging bottles.

[0016] Preferably, the end of each screening channel is connected to a material separation conveyor, and the material separation conveyor classifies and conveys the packaging bottles according to whether they are qualified or not and the types of defects.

[0017] Preferably, there are four screening channels. The four screening channels are, from the initial side to the rear side, qualified products, label reprocessed and repaired products, label removed and then repaired products, and scrapped products. Through multi-level screening, subsequent remedial measures can be facilitated, so that products with the same processing problems can be batched and the repair efficiency of products can be improved.

[0018] Compared with the prior art, the beneficial effects of the present invention are: The present invention simplifies the structure of labeling and coding detection of condiment packaging bottles, combines a visual detection mechanism with an automatic material sorting mechanism before packaging, integrates the two processes into one, and improves the production efficiency and detection efficiency of the entire condiment filling system.

[0019] The present invention can complete the quality inspection of packaging bottles in a continuous production process, and can drive the packaging bottles to rotate by a specific structure, so as to fully inspect the bottle labels of the packaging bottles, thereby improving the inspection accuracy and better preventing defective products from entering the market and affecting the brand image.

[0020] The present invention adds a defective product type classification device. Compared with the original manual secondary processing of all defective products, condiments with different disposal methods are grouped together, which can save subsequent processing time, improve processing efficiency, and reduce cost waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Attached Figure 1 It is a schematic diagram of the structure of the present invention in a top view; Attached Figure 2 It is a schematic diagram of the first stereoscopic viewing angle structure of the present invention; Attached Figure 3 is a schematic diagram of a second stereoscopic viewing angle structure of the present invention; Attached Figure 4 It is a schematic diagram of the main viewing angle structure of the present invention; Attached Figure 5 It is a schematic diagram of a partial top view of the docking mechanism of Example 2 of the present invention; Attached Figure 6 It is a structural schematic diagram of the material sorter of the present invention; Attached Figure 7 The present invention Figure 2 A partial enlarged structural diagram of the middle part; Attached Figure 8 The present invention Figure 4 A schematic diagram of the partially enlarged structure of the middle B part; Reference numerals shown in the drawings: 1, front conveyor; 2, rear conveyor; 3, sorting device; 4, transition platform; 5, docking mechanism; 6, CCD camera system; 7, screening mechanism; 21, guide vane; 22, screening channel; 31, sorting rack; 32, main shaft; 33, sorting tray; 34, limiting groove; 35, positioning table; 36, drive motor; 41, support frame; 42, transition tabletop; 51, buffer mechanism; 52, docking frame; 53, docking belt; 71, screening cylinder; 72, extension link; 73, pushing head. Detailed implementation manners

[0022] In combination with the drawings and specific embodiments, the present invention will be further described. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by this application. Embodiment 1

[0023] A bottled condiment defect detection system according to the present invention includes a front conveyor 1, a rear conveyor 2 and a sorting device 3. Both the front conveyor 1 and the rear conveyor 2 are belt conveyors. The front conveyor 1 is used to convey the bottled condiment packages that have completed the marking and labeling processes downstream. The rear conveyor 2 is used to continue conveying the bottled condiment packages that have been detected at the sorting device 3, and complete the screening according to the detection results, separating the qualified products from the packages with different defects.

[0024] The rear conveyor 2 is arranged at an angle with the conveying direction of the front conveyor 1, so that the sorting device 3 can complete the transfer of the packaged bottles by rotation. The conveying angle between the rear conveyor 2 and the front conveyor 1 is preferably 90-135 degrees. The sorting device 3 is installed outside the included angle between the rear conveyor 2 and the front conveyor 1. A transition platform 4 is installed between the end of the front conveyor 1 and the starting end of the rear conveyor 2. The transition platform 4 is composed of a support frame 41 and a transition tabletop 42 at the top. The shape of the top of the transition platform 4 just fills the included angle shape formed by the front conveyor 1 and the rear conveyor 2. The top surface height of the transition platform 4 is the same as the conveyor belt height of the front conveyor 1 and the rear conveyor 2. The top of the transition platform 4 is a smooth plane. Through the supporting effect of the transition platform 4, it can ensure that the packaged bottles smoothly transition from the front conveyor 1 to the rear conveyor 2 under the push of the sorting device 3.

[0025] Specifically, the material sorter 3 is a rotating single-piece material conveying structure. The material sorter 3 includes a material sorting frame 31, which is located between the end of the front conveyor 1 and the front end of the rear conveyor 2. The material sorting frame 31 can be relatively fixed on the ground by installing a counterweight or bolting to ensure the stability of the installation. The main shaft 32 is rotatably arranged at the center of the material sorting frame 31, and the bottom of the material sorting frame 31 has a driving motor 36 that drives the main shaft 32 to rotate through a gear box or a belt, a transmission chain and other mechanisms. At least two material sorting trays 33 are installed on the main shaft 32 from top to bottom, and the material sorting tray 33 has a limiting groove 34 that is adapted to the outer contour of the packaging bottle. The limiting groove 34 is evenly arranged on the material sorting tray 33 in a circumferential manner. The limiting groove 34 is used to limit the packaging bottle, so that the packaging bottle can be driven to move from the front conveyor 1 to the rear conveyor 2. Specifically, after the seasoning packaging bottle is transported from the upstream, it is accumulated at the end of the front conveyor 1 and is blocked by the material sorter 3. When the limiting groove 34 on the sorter 3 rotates to the position facing the bottle, the bottle is pushed into the limiting groove 34 by the continuous conveying force of the front conveyor 1, and is transferred with the rotation of the sorting tray 33. When the bottle is moved to the rear conveyor 2, the bottle will automatically leave the limiting groove 34 under the continuous conveyance of the rear conveyor 2. The limiting grooves 34 are evenly arranged on the sorting tray 33 in a circumferential shape, which makes the time interval for the bottle to be released consistent, thereby ensuring the uniformity of the bottle sorting.

[0026] Specifically, the sizes of the limiting grooves 34 of the multiple material sorting trays 33 are inconsistent, based on the bottle body size of the packaging bottle. When the material sorting tray 33 limits the conveyance of the packaging bottle, the outer wall of the packaging bottle just contacts the limiting grooves 34 of the multiple material sorting trays 33 and its own axis is perpendicular.

[0027] Specifically, the spacing between the material trays 33 is adjustable. When the limiting slots 34 limit the packaging bottles, the material trays 33 do not block the labels of the packaging bottles, so that the visual recognition system can accurately and comprehensively recognize the labels and marking images of the packaging bottles, so as to accurately complete the type judgment and screening of defective products. At the same time, the height-adjustable material trays 33 also provide fine-tuning space for the contact between the limiting slots 34 and the packaging bottles, ensuring the smooth transportation of the packaging bottles.

[0028] The visual recognition system is the CCD camera system 6. The installation cantilever of the CCD camera system 6 extends into the installation space from one side of the rear conveyor 2. The CCD camera system 6 is not physically connected to the feeder 3, so that the operation of the sorting tray 33 will not interfere with the image recognition work of the CCD camera system 6, and the two cooperate without interfering with each other. The CCD camera system 6 specifically includes a CCD camera, an exposure lamp, a positioning sensor, etc. The positioning sensor is used to detect that the packaging bottle enters the detection range. The exposure lamp strobes to supplement light for the packaging bottle to be recognized. The CCD camera records the label of the packaging bottle completely through continuous image acquisition, so as to comprehensively complete the detection of the packaging quality of the packaging bottle.

[0029] Specifically, the installation structure of the sorting tray 33 is as follows: a positioning table 35 is sleeved on the main shaft 32. At least one fastening bolt is arranged on the outer wall of the positioning table 35. The positioning table 35 is fixed on the main shaft 32 by tightening the fastening bolt. The top of the positioning table 35 has a number of flange screw holes, and the sorting tray 33 has installation holes corresponding to the flange screw holes. The sorting tray 33 and the positioning table 35 are fixedly connected by bolts. Further, in order to ensure the accuracy of the installation of the sorting tray 33 and the positioning table 35, so that multiple sorting trays 33 can be installed correspondingly, the main shaft 32 is provided with a guiding key or a guiding key groove, and a mating key groove corresponding to the guiding key or a mating key corresponding to the guiding key groove is arranged in the central holes of the positioning table 35 and the sorting tray 33. Through the key connection method, the installation accuracy of the sorting tray 33 can be ensured, so that the limiting grooves 34 of multiple sorting trays 33 can be installed correspondingly one by one, thereby ensuring the stability of the picking and transportation of the condiment packaging bottles.

[0030] Specifically, there is an installation space between the sorting trays 33. When more than 2 sorting trays 33 are installed, the installation space is between the two sorting trays 33 where the label is located. The CCD camera system 6 is installed in the installation space through cantilever support, so that the entire CCD camera system 6 can be in a semi-closed state. By using the light-shielding effect of the two sorting trays 33, most of the stray light effects can be eliminated, making the label image obtained by the CCD camera system 6 clearer and ensuring the accuracy of the image recognition result.

[0031] The docking mechanism 5 is installed on the opposite side of the feeder 3. The docking mechanism 5 cooperates with the feeder 3. When the feeder 3 drives the packaging bottle to be transported, the docking mechanism 5 comes into contact with the packaging bottle, so that the packaging bottle can rotate independently under the friction force and display the large label completely within the coverage range of the CCD camera system 6. There is a buffer mechanism 51 behind the docking mechanism 5. When the feeder 3 drives the packaging bottle to pass through the transition platform 4, the buffer mechanism 51 pushes the docking mechanism 5, so that the docking mechanism 5 comes into contact with the packaging bottle and increases the friction force with the packaging bottle, thereby driving the packaging bottle to rotate better and displaying the label on the packaging bottle body completely.

[0032] Specifically, the contact center of the docking mechanism 5 with the packaging bottle is on the entire bottle body or at the bottle body label position, and cooperates with the limit grooves 34 at the upper and lower ends of the label to ensure stable transportation of the packaging bottle. At the same time, the contact between the docking mechanism 5 and the bottle body label can also test the pasting quality of the label to ensure the labeling and coding quality of the packaging bottle.

[0033] Specifically, the docking mechanism 5 is a docking plate, and a docking bracket is installed on the rear side of the docking plate, and the docking bracket is fixedly connected to the support frame 41 of the transition platform 4. The docking plate is an arc-shaped plate with a certain curvature, and its curvature corresponds to the curvature of the material sorting tray 33, which can ensure that the packaging bottles pass smoothly through the area of ​​the transition platform 4. When the material sorting tray 33 drives the seasoning bottle to rotate, the seasoning bottle conflicts with the docking plate. The buffer mechanism 51 is a plurality of shock-absorbing springs, and the shock-absorbing springs are installed between the docking plate and the docking bracket. When the material sorting tray 33 drives the seasoning bottle to rotate to the contact position with the docking mechanism 5, the shock-absorbing springs are compressed to provide thrust for the docking plate, so that there is a certain resistance between the docking plate and the packaging bottle, so that the packaging bottle can rotate stably without affecting the passage of the packaging bottle.

[0034] Above the rear conveyor 2, a number of guide vanes 21 are provided. The guide vanes 21 divide the rear conveyor 2 into a number of screening channels 22. The outermost screening channel 22 is a qualified product channel. In this embodiment, there are four screening channels 22. Starting from the qualified product channel, the screening channels 22 on the other side are respectively: a defective product channel where the label is not firmly attached or has fallen off and can be reattached; a defective product channel where the label or inkjet code is incorrect, dirty, cracked, etc. and needs to be cleaned and reattached; a scrap product channel where the packaging bottle body is damaged, dirty, etc. At least one screening mechanism 7 is provided between adjacent screening channels 22. Through the screening mechanism 7, the defective packaging bottles are pushed to switch the screening channels 22, so as to progressively screen and classify according to the types of defects of the packaging bottles. Specifically, the screening mechanism 7 includes a counting device and a screening cylinder 71. The screening cylinder 71 is installed on one side of the screening channel 22. The counting device measures the number of packaging bottles, and calculates the position of the defective products through distance. When the defective products reach the screening mechanism 7, the cylinder of the screening mechanism 7 acts, pushing the packaging bottles to switch the screening channels 22 and transfer them to the next-level channel. When the defective condiment packaging bottle belongs to the classification corresponding to this screening channel 22, it is continuously conveyed by this screening channel 22. When the defect type of the packaging bottle does not belong to the classification of this screening channel 22, after the packaging bottle triggers the counting device of this screening channel 22, the corresponding screening cylinder 71 of this screening channel 22 acts, pushing the packaging bottle into the next screening channel 22 until the defect type of the packaging bottle is consistent with the classification corresponding to the screening channel 22. At the position of the guide vane 21 corresponding to the screening mechanism 7, there is a switching notch, so that the screening mechanism 7 can push the packaging bottle to transfer from the switching notch to the next screening channel 22. The screening cylinder 71 adopts a slide table cylinder, which has its own support, so that the front end of the cylinder can be stably extended, and the pushing effect on the condiment packaging bottle is better. Specifically, in order to prevent the screening cylinder 71 from blocking and interfering with the normal conveyance of the bottled condiments in the screening channel 22, an extension connecting rod 72 is installed at the front end of the piston rod of the screening cylinder 71. The extension connecting rod 72 deflects the action of the screening cylinder 71, so that the screening cylinder 71 is installed at a high position, but the pushing head 73 installed at the front end is located at the height of the bottle body. The installation height of the screening cylinder 71 is greater than the height of the bottle body, so that the bottled condiments can pass smoothly. The front end of the pushing head 73 has a certain concave arc, so that the packaging bottle can be more stably restricted, preventing the packaging bottle from tipping and being damaged due to slipping when the packaging bottle is pushed.

[0035] Specifically, each screening channel 22 can have a separate conveyor belt as the conveying unit, and the diversion plate 21 is installed on the tabletop between each screening channel 22. Multiple separate conveyor belts can use the same drive unit as the power source to ensure the synchronization of the conveying speeds of each screening channel 22. Thus, when the packaging bottles switch between the screening channels, they will not tip over due to rate changes.

[0036] In another conveying solution, multiple screening channels 22 can use the same wide conveyor belt as the conveying unit, and the diversion plate 21 is installed on the frame supports on both sides of the rear conveyor 2 in a gantry overhead structure. However, since the installation position of the screening cylinder 71 is relatively complex, in order to ensure the running stability, when there are more screening channels 22, the present embodiment preferably adopts the structure of synchronous driving of multiple conveyor belts in the first type.

[0037] Specifically, the screening channels 22 are arranged progressively from the outside to the other side. The diversion plates 21 for separating the screening channels 22 are arranged in a stepped manner, and the screening mechanisms 7 installed thereon are also arranged in a stepped manner, so that the screening mechanism 7 of the next screening channel 22 is closer to the downstream than the previous screening mechanism 7, thereby providing space for the screening of bottled condiments.

[0038] In this embodiment, the end of each screening channel 22 is connected to a distributing conveyor, and the distributing conveyor classifies and conveys the packaging bottles according to whether they are qualified and the types of defects, so as to collect the packaging bottles with the same defect problems for subsequent centralized treatment. Embodiment 2

[0039] Based on Embodiment 1, the structure of the docking mechanism 5 in this embodiment is slightly different. In order to enable the packaging bottle to rotate within a smaller transfer range by more than 180 degrees to meet the image pickup conditions of the CCD camera system 6, an auxiliary rotation structure is added to the docking mechanism 5 in this embodiment. The docking mechanism 5 includes a docking frame 52. Tension rollers are rotatably installed at both ends of the docking frame 52. One of the tension rollers should be the driving roller, which is driven to rotate by a motor. A docking belt 53 is tension-installed between the two tension rollers, and the rotation direction of the docking belt 53 is opposite to the rotation direction of the sorting tray 33. Through the reverse rotation, the rotation speed of the condiment packaging bottle in contact with it can be increased, so that when the packaging bottle is driven to rotate by a smaller angle by the sorting tray, it can complete a sufficient self-rotation angle, enabling the CCD camera system 6 to record the complete label state under a smaller displacement state of the packaging bottle, thereby improving the efficiency of label image acquisition, reducing the recognition difficulty and recognition range of the CCD camera, reducing the pressure on the image processing link, and improving the judgment accuracy of defective products.

[0040] Specifically, the buffer mechanism 51 in this embodiment is installed between the docking frame 52 and the docking bracket, and also plays a buffering role, which is used to balance the distance error caused by the rotation of the material sorting tray.

[0041] Further, in this embodiment, the docking frame 52 is a concave arc-shaped frame body, and the docking belt 53 is in a suspended state on the side facing the material sorting tray 33. When the bottom of the packaging bottle is on the docking belt 53, the docking belt 53 will be concave under its own elastic force, and at the same time apply a certain pressure to the packaging bottle, which is more conducive to the self-rotation of the packaging bottle. Based on this, the docking belt 53 itself has a buffering effect. Therefore, when using this structure, the buffer mechanism 51 can not be installed to simplify the structure. Embodiment 3

[0042] Based on Embodiment 2, in this embodiment, the driving motor 36 of the material sorter 3 is a stepping motor. Through the drive of the stepping motor, the material sorting tray 33 can be driven to rotate at a precise angle. The rotation angle of the material sorting tray 33 each time is the included angle P between two adjacent limiting slots 34. Correspondingly, the included angle between the front conveyor 1 and the rear conveyor 2 is N times the angle P. Specifically, in this embodiment, there are 8 limiting slots 34 on the material sorting tray, the included angle between two adjacent limiting slots 34 is 45 degrees, and the included angle between the front conveyor 1 and the rear conveyor 2 is 90 degrees. This structure can ensure that the bottled condiments on the front conveyor 1 can accurately enter the limiting slots 34, and at the same time can ensure that the packaging bottles in the limiting slots 34 are accurately taken out by the rear conveyor 2, avoiding the situation that the conveying state of the packaging bottles is affected by the rotation factor of the material sorting tray 33.

[0043] More specifically, the orientation of the CCD camera system 6 is also a node where the limiting slot 34 pauses. At this time, the docking belt 53 of the docking mechanism 5 just contacts the packaging bottle, so as to drive the packaging bottle to rotate itself through the reverse drive of the docking belt 53. Through the in-situ self-rotation of the packaging bottle, the bottle body image obtained by the CCD camera system 6 is more stable, which is more conducive to obtaining a more accurate defect recognition result.

[0044] When using this device to conduct quality inspection on the labels or inkjet codes on the body of the condiment packaging bottle, first, the pre-feed conveyor 1 conveys the bottled condiments that have been filled, labeled, and marked. The condiment packaging bottles accumulate at the position of the aligning device 3 at the end of the pre-feed conveyor 1. The pre-feed conveyor 1 continues to convey, and the bottom surface of the packaging bottle makes sliding friction contact with the pre-feed conveyor 1. As the aligning device 3 continuously rotates or rotates step by step, when the limiting groove 34 on the aligning plate 33 is just in a butting state with the pre-feed conveyor 1, the bottled condiments are sent into the limiting groove 34 and carried by the aligning plate 33 to be transferred to the post-feed conveyor 2. During the transfer, the outer side of the packaging bottle of the bottled condiments contacts the docking mechanism 5, and through the frictional resistance of the docking mechanism 5, the packaging bottle itself is driven to rotate around its axis. At this time, it just passes through the image acquisition range of the CCD camera system 6. The CCD camera system 6 continuously takes pictures and sends the images back to the controller. The controller identifies the label status and inkjet code status of the packaging bottle body, and detects and reviews whether the label and inkjet code are clear, whether the label is damaged or soiled, etc. If there is no abnormality in the label and inkjet code status of the bottle body, then after the packaging bottle is released onto the post-feed conveyor 2, the qualified bottled condiments are transferred to the packaging process by the outermost qualified product screening channel 22. When there are defects in the packaged products, according to the defect type of the packaging bottle, through the cooperation and measurement of the counting device, the defective products are removed into the corresponding screening channel 22 by the screening cylinder 71, which is convenient for subsequent centralized treatment of the same type of defective products.

Claims

1. A bottled condiment defect detection system, comprising a front conveyor (1), a rear conveyor (2) and a sorting device (3), characterized in that: The material sorter (3) is arranged between the front conveyor (1) and the rear conveyor (2), the front conveyor (1) and the rear conveyor (2) are arranged at a certain angle, and a transition platform (4) is arranged between the end of the front conveyor (1) and the starting end of the rear conveyor (2); the material sorter (3) comprises a material sorting frame (31), a main shaft (32) is arranged at the center of the material sorting frame (31), at least two material sorting trays (33) are arranged on the main shaft (32), and the material sorting tray (33) has a limiting groove (34) adapted to the outer contour of the packaging bottle, the limiting groove (34) is evenly arranged on the circumference of the material sorting tray (33), and the spacing between the material sorting trays (33) is adjustable. When the limiting groove (34) limits the packaging bottle, the The material sorting tray (33) does not block the labels of the packaging bottles. A docking mechanism (5) is arranged on the opposite side of the material sorter (3). A buffer mechanism (51) is arranged on the rear side of the docking mechanism (5). When the material sorter (3) drives the packaging bottles to pass through the transition platform (4), the docking mechanism (5) collides with the packaging bottles. An installation space is provided between the material sorting trays (33). A CCD camera system (6) is cantilevered and installed in the installation space. A plurality of guide plates (21) are arranged above the rear conveyor (2). The guide plates (21) divide the rear conveyor (2) into a plurality of screening channels (22). At least one screening mechanism (7) is arranged on one side of the screening channel (22). The screening mechanism (7) is used to push defective packaging bottles to switch the screening channel (22).

2. The bottled condiment defect detection system according to claim 1, wherein: A positioning platform (35) is sleeved on the main shaft (32), and at least one fastening bolt is provided on the outer wall of the positioning platform (35). The positioning platform (35) is fixed to the main shaft (32) by tightening the fastening bolt, and the material sorting tray (33) is fixedly connected to the positioning platform (35) by bolts.

3. The bottled condiment defect detection system according to claim 2, characterized in that: The main shaft (32) is provided with a guide key or a guide keyway, and the central holes of the positioning platform (35) and the material sorting plate (33) are both provided with a matching keyway corresponding to the guide key or a matching key corresponding to the guide keyway.

4. A bottled condiment defect detection system according to claim 1, characterized in that: The mounting cantilever of the CCD camera system (6) extends from one side of the rear conveyor (2) into the mounting space, and the CCD camera system (6) is not physically connected to the material sorter (3).

5. A bottled condiment defect detection system according to claim 1, characterized in that: The docking mechanism (5) is a docking plate, and when the material arrangement plate (33) drives the seasoning bottle to rotate, the seasoning bottle and the docking plate come into conflict.

6. The bottled condiment defect detection system according to claim 1, wherein: The docking mechanism (5) comprises a docking frame (52), a docking belt (53) is tensioned on the docking frame (52), the docking belt (53) is driven by a motor, and the rotation direction of the docking belt (53) is opposite to the rotation direction of the material sorting tray (33).

7. A bottled condiment defect detection system according to claim 1, characterized in that: The buffer mechanism (51) is a plurality of shock absorbing springs. When the material processing plate (33) drives the seasoning bottle to rotate to a contact position with the docking mechanism (5), the shock absorbing springs are compressed to provide thrust.

8. A bottled condiment defect detection system according to claim 1, characterized in that: The screening mechanism (7) includes a counting device and a screening cylinder. At the position of the deflector (21) corresponding to the screening mechanism (7), there is a switching notch, so that the screening mechanism (7) can push the packaging bottles to transfer from the switching notch to the next screening channel (22).

9. A bottled condiment defect detection system according to claim 1, characterized in that: At the end of each screening channel (22), a distributing conveyor is connected, and the distributing conveyor classifies and conveys according to whether the packaging bottles are qualified or not and the types of defects.

10. A bottled condiment defect detection system according to claim 1, characterized in that: There are four screening channels (22).

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