A continuous conveyor device for processing bottle caps on a production line

Abstract

This invention discloses a continuous conveying device for bottle cap production line processing, relating to the field of bottle cap production technology. Specifically, it includes a linear conveying structure and a rotary conveying structure. The linear conveying structure includes a conveyor belt with a groove in the middle of its outer side wall. Air holes are evenly distributed at the bottom of the groove. A guide and limiting component is located at the top of one side of the conveyor belt, and a rotary conveying structure is located above the other side of the conveyor belt. This application employs pneumatic non-contact conveying and positioning technology. Through the dual synergistic effect of directional lifting airflow and coaxial buffering airflow, it achieves zero-contact, low-damage conveying of bottle caps throughout the lifting and lowering process. Furthermore, the directional lifting airflow separates the bottle caps from the conveyor belt, eliminating frictional loss between the bottle caps and the conveyor belt during queuing or subsequent processing. The pneumatic method also improves conveying efficiency, resulting in a simple structure and reduced equipment maintenance costs.

Description

Technical Field

[0001] This invention relates to the field of bottle cap manufacturing technology, specifically a continuous conveying device for bottle cap production line processing. Background Technology

[0002] Bottle caps typically undergo multiple processes during production, including stamping, forming, gluing, printing, testing, and packaging. Between these processes, bottle cap blanks or semi-finished products usually need to be transferred using conveyor devices.

[0003] In existing technologies, the conventional implementation method for bottle cap conveying and marking operations is as follows: A conveyor belt is used to continuously transport the bottle caps. Flexible baffles are installed along one or both sides of the conveyor belt to constrain the conveying path of the bottle caps and prevent them from deviating or derailing during transport. When the bottle cap queue reaches the marking station, a baffle-type positioning mechanism intercepts a preset number of bottle caps below the marking head, stopping them from moving synchronously with the conveyor belt, thus enabling the marking operation. Bottle caps located upstream of the marking station are constrained by a limiting mechanism, forming a queue waiting for material.

[0004] However, because the conveyor belt continues to rotate during the marking process, the bottle caps in the queue are in a state of sliding friction with the conveyor belt. This increases the wear of the sealing ring or coating at the bottom of the bottle cap and also accelerates the wear of the conveyor belt surface. Furthermore, the bottle caps in the marking process lack reliable mechanical locking, making them susceptible to momentary positional shifts due to external influences, affecting marking accuracy. Moreover, bottle caps that fail to be marked and can be re-marked are carried along by subsequent bottle caps, unable to return to the marking station for a second operation, and can only enter the next stage, affecting product qualification rate and production quality stability. Based on this, this application proposes a continuous conveying device for processing bottle caps on a wine bottle production line. Summary of the Invention

[0005] This invention provides a continuous conveying device for bottle cap production line processing, which solves the following problems mentioned in the background art: During the marking process, the conveyor belt operates continuously, and the bottle caps waiting in line slide and rub against the conveyor belt, resulting in wear of the bottom sealing ring or coating of the bottle cap and accelerated wear of the conveyor belt surface; the bottle caps at the marking station lack reliable mechanical locking and positioning, and are easily affected by external interference, resulting in instantaneous displacement and insufficient marking accuracy; bottle caps that fail to be marked cannot be traced back to the marking station for remarking, and are directly carried into the next process by subsequent bottle caps, affecting the product qualification rate.

[0006] The present invention provides the following technical solution: a continuous conveying device for processing bottle caps in a production line, comprising a linear conveying structure and a rotary conveying structure. The linear conveying structure includes a conveyor belt, a groove is provided in the middle of the outer side wall of the conveyor belt, and air holes are uniformly provided in the bottom of the groove. A guide and limiting component is provided at the top of one side of the conveyor belt, and a rotary conveying structure is provided above the other side of the conveyor belt. A bottle cap lifting structure is provided at the intersection of the guide and limiting component and the rotary conveying structure. The bottle cap lifting structure is used to realize the conversion of bottle caps from linear conveying to rotary conveying. The bottle cap lifting structure includes a first airflow nozzle located below the air hole in the straight section of the conveyor belt and a bottle cap limiting frame adapted to the bottle cap. The first airflow nozzle is located directly below the bottle cap limiting frame and is fitted with a horizontal baffle at its top. The bottle cap limiting frame has a hollow structure, and the inner wall of the frame is uniformly provided with exhaust grooves. An exhaust pipe is provided on one side of the frame. The guide and limiting assembly includes a set of flexible baffles extending along the conveying direction, a limiting plate that is tightly fitted to one end of the flexible baffles near the rotating conveying structure, and an isolation baffle located between the two flexible baffles and movably connected to the flexible baffles. The bottom of the isolation baffle and the bottom of the limiting plate are provided with compensation blocks that are adapted to the groove. When both compensation blocks are located in the groove, the isolation baffle, the flexible baffle, and the limiting plate together form a bottle cap limiting frame.

[0007] Preferably, the flexible baffle includes a fixed plate and a baffle body connected to the inner side of the fixed plate. The end of the fixed plate near the rotary conveying structure, the limiting plate, and the isolation baffle are all hollow structures. The inner cavity of the fixed plate is connected to the inner cavity of the limiting plate, and the inner cavity of the isolation baffle is connected to the inner cavity of the fixed plate through connecting grooves. The inner wall of the isolation baffle, the inner wall of the flexible baffle near the rotary conveying structure, and the inner wall of the limiting plate are all provided with exhaust grooves.

[0008] Preferably, a first pressure sensor is provided on the side of the limiting plate near the flexible baffle.

[0009] Preferably, the rotary conveying structure includes a supporting base plate connected to the end of the limiting plate away from the flexible baffle. A rotating shaft is movably connected to the top of the supporting base plate. Connecting rods are evenly connected to the outer ring of the top of the rotating shaft. A fixing block is connected to the end of the connecting rod away from the rotating shaft. A bottle cap-compatible receiving groove is provided in the middle of the bottom of the fixing block. A second pressure sensor is provided at the top of the receiving groove. Side grooves are provided on both sides of the receiving groove. Clamping plates compatible with bottle caps are movably connected in the side grooves. The clamping plates are connected to the fixing block via an electric telescopic rod. A through hole is provided in the middle of the receiving groove. An air jet ring is provided on the outer ring of the through hole.

[0010] Preferably, the connecting rod is provided with a branch channel group, which includes a first branch channel and a second branch channel. The first branch channel is connected to the air inlet end of the jet ring through a first connecting pipe. The rotating shaft is provided with a main channel group adapted to the branch channel group. The main channel group includes a first main channel connected to the first branch channel and a second main channel connected to the second branch channel.

[0011] Preferably, a third pressure sensor is provided on the inner wall of the clamping plate, and a mesh flow channel is provided on the inner wall of the clamping plate. The second branch flow channel is connected to the air inlet end of the mesh flow channel through a second connecting pipe, and an electric ball valve is provided on the second connecting pipe.

[0012] Preferably, a hollow sleeve is movably fitted around the outer ring at the bottom end of the rotating shaft. The hollow sleeve is connected to the supporting base plate. The air inlet end of the hollow sleeve is connected to a first air inlet pipe. The inner wall of the hollow sleeve is provided with a first connecting hole adapted to the first main channel and a second connecting hole adapted to the second main channel. The first connecting hole is located on the side of the hollow sleeve near the release position of the rotating conveying structure. A central rod is provided in the middle of the rotating shaft. The central rod is connected to the supporting base plate. A crossbar is connected to the top of the central rod. A second airflow nozzle is provided at the bottom of the end of the crossbar. When the second connecting hole, which is away from the first connecting hole, is connected to the mesh channel, the second airflow nozzle is located directly above the bottle cap.

[0013] Preferably, a guide buffer assembly is provided below the release position of the rotary conveyor structure. The guide buffer assembly includes an air jet plate disposed on one side of the unloading position and a guide cone connected to the top of the air jet plate through a lifting structure. A limit ring is provided at the bottom of the guide cone. Air jet holes are uniformly provided at the bottom end of the air jet plate. When the bottle cap slides down along the guide cone, the horizontal airflow ejected from the air jet holes forms a horizontal air curtain below the bottle cap.

[0014] Preferably, the inner diameter of the upper end of the guide cone is larger than the inner diameter of its lower end. When the fixed block is in the release position of the rotary conveying structure, the central axis of the guide cone is collinear with the central axis of the bottle cap. The limiting ring is a hollow structure with exhaust holes evenly arranged on its inner wall. The air inlet end of the limiting ring is connected to a second air inlet pipe.

[0015] Preferably, the bottom of the fixing block and the top of the bottle cap limiting frame are at the same height.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. This continuous conveying device for bottle cap production line adopts a combination of linear and rotary conveying to meet the process requirements of continuous feeding and fixed-point operation, while making the overall structure more compact and saving floor space. Furthermore, when changing conveying modes, the bottle cap limiting frame and receiving groove work together to limit the bottle cap, allowing it to be lifted in a directional manner and ensuring stability. The guide buffer assembly further limits the bottle cap, ensuring it falls vertically and lands on the conveyor belt in a predetermined posture, facilitating stable execution of subsequent processes.

[0017] 2. The continuous conveying device used in this bottle cap production line adopts pneumatic non-contact conveying and positioning technology. Through the dual synergistic effect of directional lifting airflow and coaxial buffering airflow, it achieves zero-contact and low-damage conveying of bottle caps throughout the lifting and falling process. The directional lifting airflow separates the bottle caps from the conveyor belt, eliminating frictional loss between the bottle caps and the conveyor belt during queuing or subsequent processing, and improving conveying efficiency through pneumatic means. Its simple structure reduces equipment failure rate and maintenance costs. During the falling stage, the coaxial buffering airflow guides and positions the bottle caps and slows their descent, reducing the contact impact force when the bottle caps fall onto the conveyor belt, lowering the probability of deformation and scratches, and ensuring the conveying quality of the bottle caps. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a continuous conveying device for processing bottle caps in a production line according to the present invention; Figure 2 The structure of this invention Figure 1 Rear view illustration; Figure 3 The structure of this invention Figure 1 Diagram showing the view from below; Figure 4 This is a schematic diagram of the linear conveying structure of the present invention; Figure 5 The structure of this invention Figure 4 Explosion diagram; Figure 6 This is a bottom view of the fixing block of the present invention; Figure 7 This is a schematic diagram showing the separation of the rotating shaft and the hollow sleeve in the structure of this invention; Figure 8 This is a top view of the hollow sleeve structure of the present invention; Figure 9 This is a schematic diagram of the guide cone and its connection structure of the present invention.

[0019] In the diagram: 1. Conveyor belt; 2. Groove; 3. Fixing plate; 4. Baffle body; 5. Fixing block; 6. Support base plate; 7. Limiting plate; 8. Jet plate; 9. Guide cone; 10. Limiting ring; 11. Electric telescopic rod; 12. First airflow nozzle; 13. Exhaust trough; 14. Exhaust pipe; 15. First drive structure; 16. Isolation baffle; 17. Connecting groove; 18. Compensation block; 19. Clamping plate; 20. Second pressure sensor; 21. Connecting rod; 22. First branch channel; 23. Second branch channel; 24. Jet ring; 25. Center rod; 26. Second airflow nozzle; 27. Rotating shaft; 28. Second main channel; 29. ​​First main channel; 30. First air inlet pipe; 31. Hollow sleeve; 32. Second connecting hole; 33. First connecting hole; 34. Lifting structure; 35. Horizontal baffle. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] This invention provides one embodiment: Please refer to Figures 1-9 A continuous conveying device for processing bottle caps in a production line includes a linear conveying structure and a rotary conveying structure. The linear conveying structure includes a conveyor belt 1, a support frame, and a set of conveying rollers. The top of the support frame is equipped with conveying rollers, and the two conveying rollers are connected by the conveyor belt 1. A servo motor is installed on one side of the support frame. The servo motor is used to drive the conveying rollers connected to it to rotate. When the servo motor drives the conveying rollers to rotate, the conveying rollers can drive the conveyor belt 1 to rotate. The conveyor belt 1 can stably convey the bottle caps placed on it. The servo motor is existing technology, and its model and specifications can be set according to requirements and are not limited here.

[0022] A groove 2 is provided in the middle of the outer side wall of the conveyor belt 1. Air holes are evenly provided at the bottom of the groove 2. The width of the groove 2 is smaller than the inner diameter of the bottle cap. During the conveying process, the bottle cap contacts the top of the conveyor belt 1. The width of the groove 2 can be set according to the requirements and is not limited here. A guide and limiting assembly is provided on the top of one side of the conveyor belt 1, and a rotary conveying structure is provided on the top of the other side of the conveyor belt 1. The guide and limiting assembly includes a set of flexible baffles extending along the conveying direction, a limiting plate 7 that is tightly fitted with the end of the flexible baffles near the rotary conveying structure, and an isolation baffle 16 located between the two flexible baffles and movably connected to the flexible baffles. In embodiment 1, a first driving structure 15 is provided on the outside of one flexible baffle. The first driving structure 15 is used to drive the isolation baffle 16 to rotate. The isolation baffle 16 can switch between a vertical state and a horizontal state. When the isolation baffle 16 is in a horizontal state, the isolation baffle 16 is located above the bottle cap, so as to avoid the isolation baffle 16 affecting the conveying of the bottle cap. In embodiment 1, the first driving structure 15 is a servo motor, and its model and specifications can be set according to requirements, which are not limited here.

[0023] The flexible baffle includes a fixed plate 3 and a baffle body 4 connected to the inner side of the fixed plate 3. The fixed plate 3 is fixed in position using an existing bracket, thereby fixing the position of the baffle body 4. The baffle body 4 is made of flexible material, and its material can be set according to requirements, without limitation here. The end of the fixed plate 3 near the rotary conveying structure, the limiting plate 7, and the isolation baffle 16 are all hollow structures. The inner cavity of the fixed plate 3 is connected to the inner cavity of the limiting plate 7, and the inner cavity of the isolation baffle 16 is connected to the inner cavity of the fixed plate 3 through connecting grooves 17. The inner wall of the isolation baffle 16, the inner wall of the flexible baffle at the end near the rotary conveying structure, and the inner wall of the limiting plate 7 are all provided with exhaust grooves 13. Both the bottom of the isolation baffle 16 and the bottom of the limiting plate 7 are provided with compensation blocks 18 that are adapted to the groove 2. When the isolation baffle 16 is in a vertical state, the compensation block 18 is located in the groove 2 and is in a movable connection with the groove 2. At this time, the isolation baffle 16, the flexible baffle and the limiting plate 7 together form a bottle cap limiting frame adapted to the bottle cap.

[0024] Furthermore, a first pressure sensor is provided on the side of the limiting plate 7 near the flexible baffle. When the bottle cap contacts the limiting plate 7, the first pressure sensor can detect the pressure data of the bottle cap on the limiting plate 7. The controller of this application can control the first drive structure 15 to work based on the data collected by the first pressure sensor. The first drive structure 15 drives the isolation baffle 16 to rotate until the isolation baffle 16 is in a vertical state.

[0025] A bottle cap lifting structure is provided at the intersection of the guide limiting component and the rotary conveying structure. This structure facilitates the transition of bottle caps from linear to rotary conveying. The bottle cap lifting structure includes a first airflow nozzle 12 positioned below the air holes on the straight section of the conveyor belt 1 and a bottle cap limiting frame adapted to the bottle cap. During use, at any given time, at least one air hole directly above the first airflow nozzle 12 is fully or partially aligned with its air outlet. A horizontal baffle 35 is fitted onto the top of the first airflow nozzle 12, and the horizontal baffle 35 is aligned with the conveyor belt. The bottom of the straight section of the conveyor belt 1 has flexible contact. For example, a wear-resistant rubber strip or other flexible sealing strip is set on the top of the horizontal baffle 35. The flexible sealing strip is used to achieve flexible contact between the horizontal baffle 35 and the bottom of the straight section of the conveyor belt 1, thereby ensuring a reliable seal between the horizontal baffle and the conveyor belt 1. When the bottle cap is located in the bottle cap limiting frame, the first airflow nozzle 12 is located directly below the bottle cap. The horizontal baffle 35 blocks the bottom of the bottle cap limiting frame to prevent airflow from leaking from the side of the nozzle and ensure that the airflow is concentrated and sprayed upward through the air holes on the conveyor belt 1.

[0026] The bottle cap limiting frame has a hollow structure, with exhaust grooves 13 evenly distributed on the inner wall of the frame, and an exhaust pipe 14 on one side of the frame. Based on feedback data from the first pressure sensor, the controller of this application sprays a first-stage airflow from the first airflow nozzle 12 when the bottle cap squeezes the limiting plate 7. The airflow sprayed in this stage blows onto the bottle cap through the air hole, causing the bottle cap to move upward and separate from the conveyor belt 1. This avoids wear on the bottom sealing ring or coating of the bottle cap due to the bottle cap being limited by the continued operation of the conveyor belt 1, accelerated wear on the surface of the conveyor belt, and avoids the sprayed airflow affecting the bottle caps that continue to be conveyed on the conveyor belt 1. Furthermore, when the isolation baffle 16 is in a vertical state, the second stage airflow ejected from the first airflow nozzle 12 is constrained by the bottle cap limiting frame and can blow up the bottle cap, causing the bottle cap to change its position in the vertical direction. During the process of the bottle cap being blown up, excess gas in the bottle cap limiting frame enters the inner cavity of the frame through the exhaust groove 13 and is finally discharged through the exhaust pipe 14, so that the gas under the bottle cap maintains dynamic balance and the bottle cap moves upward stably.

[0027] When using this application, the method for determining the air pressure ejected from the first airflow nozzle 12 can be a direct adjustment method: install a precision pressure regulating valve and a pressure gauge in the air path of the first airflow nozzle 12, set the starting point of the adjustment to 10%~30% of the air pressure corresponding to the weight of the bottle cap, and slowly increase it. When the air pressure increases to the point where the bottle cap can just shake slightly and a stable air film appears between the bottom and the conveyor belt, but the overall height does not rise significantly, the pressure at this point is the ideal first-stage working pressure. Continue to increase the air pressure, and when the bottle cap begins to move steadily upward and the upward speed meets the production cycle requirements, this air pressure is the ideal working air pressure for the second stage.

[0028] The rotary conveying structure includes a support base plate 6 connected to the end of the limiting plate 7 away from the flexible baffle. A rotating shaft 27 is movably connected to the top of the support base plate 6. A second drive structure is provided on the support base plate 6. The second drive structure is used to drive the rotating shaft 27 to rotate. In embodiment 1, the second drive structure is a servo motor. Its model and specifications can be set according to requirements and are not limited here.

[0029] Connecting rods 21 are evenly connected to the outer ring of the top of the rotating shaft 27. A fixing block 5 is connected to the end of the connecting rod 21 away from the rotating shaft 27. The bottom of the fixing block 5 is at the same height as the top of the bottle cap limiting frame. Under the action of the second driving structure, the fixing block 5 can move above the bottle cap limiting frame. A receiving groove for the bottle cap is provided in the middle of the bottom of the fixing block 5. When the bottle cap needs to be transferred by conveying, the bottle cap is located directly below the receiving groove. Under the action of the airflow sprayed from the first airflow nozzle 12, the bottle cap can be moved up into the receiving groove. A second pressure sensor 20 is provided at the top of the receiving groove. When the second pressure sensor 20 detects pressure, the top of the bottle cap is in contact with the top of the receiving groove, indicating that the bottle cap has been transferred from the bottle cap limiting frame into the receiving groove. Side grooves are provided on both sides of the receiving groove. A clamping plate 19 adapted to the bottle cap is movably connected in the side groove. The clamping plate 19 is connected to the fixing block 5 through an electric telescopic rod 11.

[0030] When the pressure detected by the first pressure sensor reaches a set threshold and the pressure detected by the second pressure sensor 20 reaches a set threshold, i.e., when the bottle cap is transferred into the receiving slot, the controller of this application drives the electric telescopic rod 11 to work. The electric telescopic rod 11 drives the clamping plate 19 to move. The two clamping plates 19 work together to clamp and fix the bottle cap. In use, the controller controls the extension threshold of the electric telescopic rod 11 and the squeezing force of the clamping plate 19 on the bottle cap. A third pressure sensor is provided on the inner wall of the clamping plate 19. When only the pressure detected by the second pressure sensor 20 reaches the set threshold, the controller determines that the first airflow nozzle 12 has been mistakenly opened, executes the operation of closing the first airflow nozzle 12, and utilizes... Alarms such as buzzers will sound to remind staff to perform maintenance. However, if both the first and second pressure sensors detect pressure at the set threshold, and the controller controls the electric telescopic rod 11 to reach the telescopic threshold, but the third pressure sensor does not detect pressure or the detected pressure is lower than the set threshold, then a clamping abnormality is judged, and the subsequent delivery and feeding of bottle caps will be immediately suspended to prevent bottle caps from piling up or colliding. The controller will control the electric telescopic rod 11 to reset and clamp again. If the third pressure sensor still does not trigger within the set number of re-clamping attempts, the controller will issue a fault alarm signal and stop the machine to prompt the operator to check the clamping mechanism, bottle cap size, or sensor status. Automatic operation can only be resumed after the fault is eliminated.

[0031] A through hole is provided in the middle of the receiving groove. When the bottle cap is being marked, the part of the bottle cap to be marked can be exposed through the through hole, making it convenient for marking. An air jet ring 24 is provided on the outer ring of the through hole.

[0032] A branch channel group is provided on the connecting rod 21, including a first branch channel 22 and a second branch channel 23. The first branch channel 22 is connected to the air inlet end of the jet ring 24 through a first connecting pipe. A mesh channel is provided on the inner wall of the clamping plate 19. The second branch channel 23 is connected to the air inlet end of the mesh channel through a second connecting pipe, and an electric ball valve is provided on the second connecting pipe. Controlling the opening of the electric ball valve can change the speed of the gas ejected from the mesh channel. A main channel group adapted to the branch channel group is provided on the rotating shaft 27. The main channel group includes a first main channel 29 connected to the first branch channel 22 and a second main channel 28 connected to the second branch channel 23. The airflow can enter the jet ring 24 through the first main channel 29 and the adapted first branch channel 22. The airflow can be ejected through the nozzles evenly arranged at the top of the inner cavity of the jet ring 24. The ejected airflow can blow away impurities generated during the marking process and prevent the bottle cap from being contaminated during the marking process. The airflow enters the mesh channel through the second main channel 28, the corresponding second branch channel 23, and the second connecting pipe. The airflow within the mesh channel creates a uniform gas film between the clamp 19 and the bottle cap, facilitating separation and preventing the bottle cap from adhering to the clamp due to static electricity. The gas flow rate within the mesh channel can be set as needed and is not limited here.

[0033] A hollow sleeve 31 is movably fitted around the outer ring at the bottom of the rotating shaft 27. The hollow sleeve 31 is connected to the support base plate 6. The air inlet end of the hollow sleeve 31 is connected to a first air inlet pipe 30. The inner wall of the hollow sleeve 31 is provided with a first connecting hole 33 that matches the first main channel 29 and a second connecting hole 32 that matches the second main channel 28. The first connecting hole 33 is located on the side of the hollow sleeve 31 near the release position of the rotary conveying structure. The rotation of the rotating shaft 27 can change the position of the main channel group. When the first main channel 29 is aligned with the first connecting hole 33, the gas in the hollow sleeve 31 can enter the jet ring 24. The jet flow rate of the jet ring 24 can be set according to the requirements and is not limited here. When the second main channel 28 is aligned with the second connecting hole 32, a uniform gas film can be formed between the clamping plate 19 and the bottle cap. The opening and closing degree of the electric ball valve can be set according to the requirements and is not limited here.

[0034] A central rod 25 is provided in the middle of the rotating shaft 27. The central rod 25 is connected to the support base plate 6. A crossbar is connected to the top of the central rod 25. A second airflow nozzle 26 is provided at the bottom of the end of the crossbar. When the second connecting hole 32, which is away from the first connecting hole 33, is connected to the mesh flow channel, the second airflow nozzle 26 is located directly above a fixed block 5. If this application is used to transport bottle caps to the marking equipment for marking, and it is necessary to inspect the bottle caps before and after marking, the second airflow nozzle 26 is located between the loading position and the marking position of the rotating conveyor structure. A collection frame can be provided on the side of the conveyor belt 1. When a defective bottle cap moves to the top of the collection frame, when the clamping plate 19 releases the bottle cap, the second airflow nozzle 26 sprays airflow to apply a downward pushing force to the bottle cap, which facilitates the separation of the bottle cap from the fixed block 5. The bottle cap can fall into the collection frame for collection.

[0035] A guide buffer assembly is installed below the release position of the rotary conveyor structure. This assembly includes an air jet plate 8 located on one side of the unloading position and a guide cone 9 connected to the top of the air jet plate 8 via a lifting structure 34. A limit ring 10 is installed at the bottom of the guide cone 9. Air jet holes are evenly distributed at the bottom of the air jet plate 8. When the bottle cap is detected as having passed the marking test, the marked bottle cap is released from its clamping position. Under gravity, as the bottle cap slides down along the guide cone 9, the horizontal airflow from the air jet holes forms a horizontal air curtain below the bottle cap, providing cushioning and reducing the impact force of the bottle cap falling back onto the conveyor belt 1. The thickness of the horizontal air curtain is less than one-third of the bottle cap's height, and the impact force on the bottle cap is less than one-third of its weight. The thickness and air pressure of the horizontal air curtain can be set according to requirements and are not limited here. The lifting structure 34 can be an electric telescopic rod, and its model and specifications can be set according to requirements without limitation. The lifting structure 34 is used to change the height of the guide cone 9, allowing it to move above the bottle cap and preventing it from interfering with the bottle cap's transport. Furthermore, when the bottle cap fails to be marked successfully and can be re-marked in its original position, the controller stops both the linear and rotary conveyor structures. After the bottle cap is re-marked, the process resumes, ensuring a high product qualification rate.

[0036] The inner diameter of the upper end of the guide cone 9 is larger than that of the lower end. When the fixed block 5 is in the release position of the rotary conveyor structure, the central axis of the guide cone 9 is collinear with the central axis of the bottle cap. Under the action of gravity, the bottle cap can fall into the guide cone 9. The limiting ring 10 is a hollow structure with exhaust holes evenly arranged on its inner wall. The air inlet end of the limiting ring 10 is connected to a second air inlet pipe. The annular airflow ejected from several exhaust holes can guide the bottle cap, so that the bottle cap moves vertically downward, avoiding deflection, jamming or collision. The size of the airflow ejected from the exhaust holes can be set according to the requirements and is not limited here.

[0037] Furthermore, in use, to prevent mechanical interference from the bottle caps during the resetting movement of the isolation baffle 16, subsequent bottle caps are only allowed to enter the waiting area below the isolation baffle 16 after the previous bottle cap has been transferred and the isolation baffle 16 has been reset. The conveying speed of the conveyor belt 1, the distance between two adjacent bottle caps, and the rotation period of the rotating shaft 27 can be set according to requirements and are not limited here.

[0038] In summary: This continuous conveyor device for bottle cap production line is suitable for bottle caps with an aspect ratio greater than 1. It uses conveyor belt 1 to transport the bottle caps, with the open end of the bottle cap in contact with the conveyor belt 1. During transport, a flexible baffle limits the bottle cap's position. When the bottle cap presses against the limiting plate 7, a first pressure sensor detects the pressure. The controller then controls the first airflow nozzle 12 to eject airflow and uses the first drive structure 15 to move the isolation baffle 16. The ejected airflow separates the bottle cap from the conveyor belt, preventing sliding friction between the conveyor belt and the bottle cap support. When the isolation baffle 16 is in a vertical position, the airflow from the first airflow nozzle 12 causes the bottle cap to... The bottle cap moves steadily upwards, gradually moving into the receiving slot above it. When the bottle cap is tightly fitted to the top of the receiving slot, the second pressure sensor 20 detects pressure. Based on the data collected by the second pressure sensor 20, the controller determines that the bottle cap has moved into place and controls the electric telescopic rod 11 to move the clamping plate 19. The coordinated action of the electric telescopic rod 11 and the clamping plate 19 achieves the clamping and fixing of the bottle cap. After the bottle cap is clamped and fixed, the first airflow nozzle 12 stops spraying airflow. At the same time, the controller controls the first drive structure 15 to drive the isolation baffle 16 to move in the opposite direction until the isolation baffle 16 is reset, and the next bottle cap can be moved above the first airflow nozzle 12. After the bottle cap is clamped and fixed, the second drive structure drives the rotating shaft 27 to rotate. The rotating shaft 27 drives the fixed block 5 to rotate through the connecting rod 21, changing the position of the bottle cap. The bottle cap is conveyed by a rotating conveyor. The bottle cap can be marked and other operations can be performed. When it is necessary to put the bottle cap back on the conveyor belt 1, the bottle cap is moved above the guide cone 9, the clamping and fixing of the bottle cap is released, and under the action of gravity, the bottle cap can fall onto the conveyor belt 1, and the conveyor belt 1 can carry the bottle cap to continue to be conveyed.

[0039] In Example 1, the marking device is set above the guide cone 9, and a collection frame is set below the second airflow nozzle 26 on one side of the conveyor belt to collect bottle caps that have failed the marking test. The specific operation of the bottle cap marking conveyor using the rotary conveyor method is as follows: After the bottle cap is clamped and fixed by the clamp 19 located above the loading position, the rotating shaft 27 drives the bottle cap to rotate 90 degrees and enter the waiting position. The rotating shaft 27 drives the bottle cap in the waiting position to rotate 90 degrees again, and the bottle cap can be moved to the marking position for marking. After the bottle cap is successfully marked, the clamp 19 releases its clamping and fixing on the bottle cap at the marking position, and the bottle cap can fall onto the conveyor belt 1. The conveyor belt 1 can carry the bottle cap to continue conveying. If the bottle cap is not successfully marked, the unmarked bottle cap is marked a second time in the original position. If it is still not marked as qualified, the unqualified bottle cap can be moved to the top of the collection frame by rotating 90 degrees under the action of the rotating shaft 27. After the clamp 19 releases its clamping on the bottle cap, the second airflow nozzle 26 sprays airflow to apply a downward pushing force to the bottle cap, which facilitates the separation of the bottle cap from the fixing block 5. The bottle cap can then fall into the collection frame for collection.

[0040] All standard parts used in this invention are commercially available products, and irregularly shaped parts can be customized according to the specifications and drawings. All specific connection methods of the structures adopt well-known and mature technologies in the art, such as bolt connections. The machinery, parts, and equipment used are all existing models under current technical conditions. The material, size, and specifications of each component can be selected according to actual needs, and this specification does not impose any limitations on this. Content not described in detail in this specification belongs to prior art known to those skilled in the art. Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the invention. The scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A continuous conveying device for processing bottle caps on a production line, comprising a linear conveying structure and a rotary conveying structure, characterized in that: The linear conveying structure includes a conveyor belt (1), a groove (2) is provided in the middle of the outer side wall of the conveyor belt (1), and air holes are uniformly provided at the bottom of the groove (2). A guide limiting component is provided at the top of one side of the conveyor belt (1), and a rotary conveying structure is provided above the other side of the conveyor belt (1). A bottle cap lifting structure is provided at the intersection of the guide limiting component and the rotary conveying structure. The bottle cap lifting structure is used to realize the conversion of the wine bottle cap from linear conveying to rotary conveying. The bottle cap lifting structure includes a first airflow nozzle (12) located below the air hole in the straight section of the conveyor belt (1) and a bottle cap limiting frame adapted to the bottle cap. The first airflow nozzle (12) is located directly below the bottle cap limiting frame and is fitted with a horizontal baffle (35) at its top. The frame of the bottle cap limiting frame is a hollow structure, and the inner wall of the frame is uniformly provided with exhaust grooves (13). An exhaust pipe (14) is provided on one side of the frame. The guide limiting assembly includes a set of flexible baffles extending along the conveying direction, a limiting plate (7) that is tightly fitted to one end of the flexible baffles near the rotating conveying structure, and an isolation baffle (16) located between the two flexible baffles and movably connected to the flexible baffles. The bottom of the isolation baffle (16) and the bottom of the limiting plate (7) are provided with compensation blocks (18) that are adapted to the groove (2). When both compensation blocks (18) are located in the groove (2), the isolation baffle (16), the flexible baffles and the limiting plate (7) together form a bottle cap limiting frame.

2. The continuous conveying device for processing bottle caps in a production line according to claim 1, characterized in that: The flexible baffle includes a fixed plate (3) and a baffle body (4) connected to the inner side of the fixed plate (3). The fixed plate (3) near the rotating conveying structure, the limiting plate (7) and the isolation baffle (16) are all hollow structures. The inner cavity of the fixed plate (3) is connected to the inner cavity of the limiting plate (7) and the inner cavity of the isolation baffle (16) is connected to the inner cavity of the fixed plate (3) through connecting grooves (17). The inner wall of the isolation baffle (16), the inner wall of the flexible baffle near the rotating conveying structure and the inner wall of the limiting plate (7) are all provided with exhaust grooves (13).

3. The continuous conveying device for processing bottle caps in a production line according to claim 1, characterized in that: The limiting plate (7) is provided with a first pressure sensor on the side near the flexible baffle.

4. The continuous conveying device for processing bottle caps in a production line according to claim 1, characterized in that: The rotary conveying structure includes a support base plate (6) connected to the end of the limiting plate (7) away from the flexible baffle. A rotating shaft (27) is movably connected to the top of the support base plate (6). A connecting rod (21) is evenly connected to the outer ring of the top of the rotating shaft (27). A fixing block (5) is connected to the end of the connecting rod (21) away from the rotating shaft (27). A bottle cap-compatible receiving groove is provided in the middle of the bottom of the fixing block (5). A second pressure sensor (20) is provided at the top of the receiving groove. Side grooves are provided on both sides of the receiving groove. A clamping plate (19) compatible with the bottle cap is movably connected in the side groove. The clamping plate (19) is connected to the fixing block (5) through an electric telescopic rod (11). A through hole is provided in the middle of the receiving groove. An air jet ring (24) is provided on the outer ring of the through hole.

5. The continuous conveying device for processing bottle caps in a production line according to claim 4, characterized in that: The connecting rod (21) is provided with a branch channel group, which includes a first branch channel (22) and a second branch channel (23). The first branch channel (22) is connected to the air inlet end of the jet ring (24) through a first connecting pipe. The rotating shaft (27) is provided with a main channel group adapted to the branch channel group. The main channel group includes a first main channel (29) connected to the first branch channel (22) and a second main channel (28) connected to the second branch channel (23).

6. The continuous conveying device for processing bottle caps in a production line according to claim 5, characterized in that: The inner wall of the clamp (19) is provided with a third pressure sensor, and the inner wall of the clamp (19) is provided with a mesh flow channel. The second branch flow channel (23) is connected to the air inlet end of the mesh flow channel through a second connecting pipe, and an electric ball valve is provided on the second connecting pipe.

7. The continuous conveying device for processing bottle caps in a production line according to claim 6, characterized in that: A hollow sleeve (31) is movably fitted on the outer ring of the bottom end of the rotating shaft (27). The hollow sleeve (31) is connected to the support base plate (6). The air inlet end of the hollow sleeve (31) is connected to a first air inlet pipe (30). The inner wall of the hollow sleeve (31) is provided with a first connecting hole (33) adapted to the first main channel (29) and a second connecting hole (32) adapted to the second main channel (28). The first connecting hole (33) is located on the side of the hollow sleeve (31) near the release position of the rotating conveying structure. A center rod (25) is provided in the middle of the rotating shaft (27). The center rod (25) is connected to the support base plate (6). A crossbar is connected to the top of the center rod (25). A second airflow nozzle (26) is provided at the bottom of the end of the crossbar. When the second connecting hole (32) away from the first connecting hole (33) is connected to the mesh flow channel, the second airflow nozzle (26) is located directly above the bottle cap.

8. The continuous conveying device for processing bottle caps in a production line according to claim 4, characterized in that: Below the release position of the rotary conveyor structure is a guide buffer assembly. The guide buffer assembly includes an air jet plate (8) set on one side of the unloading position and a guide cone (9) connected to the top of the air jet plate (8) through a lifting structure (34). A limit ring (10) is set at the bottom of the guide cone (9). Air jet holes are uniformly arranged at the bottom end of the air jet plate (8). When the bottle cap slides down along the guide cone, the horizontal airflow ejected from the air jet holes forms a horizontal air curtain under the bottle cap.

9. A continuous conveying device for processing bottle caps on a production line according to claim 8, characterized in that: The inner diameter of the upper end of the guide cone (9) is greater than the inner diameter of its lower end. When the fixed block (5) is in the release position of the rotating conveying structure, the central axis of the guide cone (9) is collinear with the central axis of the bottle cap. The limiting ring (10) is a hollow structure with exhaust holes evenly arranged on its inner wall. The air inlet end of the limiting ring (10) is connected to a second air inlet pipe.

10. A continuous conveying device for processing bottle caps in a production line according to claim 4, characterized in that: The bottom of the fixing block (5) and the top of the bottle cap limiting frame are at the same height.

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