A transfer device for plastic bottle cap production

Abstract

The application relates to the technical field of conveying devices, and discloses a transfer device for plastic bottle cap production. The transfer device for plastic bottle cap production comprises a feeding vibration disc. The feeding vibration disc transports plastic bottle cap bodies to a conveying belt of a belt conveying part. A transfer assembly is arranged on the belt conveying part. When a vertical cylinder rotates step by step in a fixed frame, a plurality of groups of arc-shaped grooves on a distributing frame are periodically aligned with the output end of the feeding vibration disc, so that the plastic bottle cap bodies enter the arc-shaped grooves one by one. Meanwhile, cooperating with a plurality of groups of main air nozzles on a semicircular pipe, the plastic bottle cap bodies can be stably adsorbed. After the plastic bottle cap bodies rotate by 180 degrees, the suction force disappears, and the conveying belt carries the plastic bottle cap bodies backward for continuous conveying, so that the plastic bottle cap bodies can be orderly transported and transferred when being transferred from the feeding vibration disc to the conveying belt of the belt conveying part, and displacement and misalignment caused by inertia can be avoided.

Description

Technical Field

[0001] This invention relates to the field of transportation equipment technology, specifically a transfer device for the production of plastic bottle caps. Background Technology

[0002] As a core packaging component for food, beverages, and daily chemical products, the continuity and stability of plastic bottle cap production—from post-molding material loading and transfer to sorting and quality inspection—directly determine product production efficiency and finished product qualification rate. Transfer devices are crucial equipment connecting plastic bottle cap molding with subsequent processing steps. Currently, the transfer devices used in plastic bottle cap mass production lines mostly rely on a core structure of vibratory feeders combined with simple conveyor belts, manual assisted positioning, or single adsorption transfer. These devices only achieve the basic transfer function of plastic bottle caps and have the following shortcomings in actual large-scale production scenarios: Firstly, existing transfer devices often lack precise material distribution and stable adsorption structures. The plastic bottle caps output by the feeding vibratory feeder are prone to stacking and misalignment. During the transfer process, due to inertia, they are easily detached or displaced from the conveying structure, causing subsequent processes to be unable to connect properly. Frequent manual intervention and adjustment are required, which not only reduces transfer efficiency but also easily causes wear on the surface of the plastic bottle caps, affecting the appearance quality of the product and making it difficult to meet the needs of large-scale continuous production. Secondly, most transfer devices do not have the functions of gradual adsorption force and synergistic adsorption. When some devices use a single adsorption structure to adsorb and transfer plastic bottle caps, the instantaneous adsorption force is too large, which can easily cause the plastic bottle caps to deform or shift. If the adsorption force is insufficient, they are prone to falling off. Moreover, they cannot dynamically adjust the adsorption force according to the position change of the plastic bottle caps, resulting in poor stability and insufficient adaptability in the transfer process. Third, the existing equipment has a low level of automation and intelligence, lacks complete sensing and detection components, and cannot automatically identify the transfer position and opening orientation of plastic bottle caps. Manual judgment of the bottle cap position and posture is required, making it difficult to achieve uniform adjustment of the opening orientation of plastic bottle caps. Subsequent processing steps require additional posture adjustment steps, increasing production processes and labor costs, and the adjustment accuracy is difficult to guarantee. Fourth, some devices with basic transfer functions have a dispersed structural design, with adsorption, transfer, and detection components arranged in a disorderly manner, low integration, large installation space, and poor signal interaction between components, which can easily lead to delays in action connection and disrupt the transfer rhythm. At the same time, they lack effective protection and auxiliary limiting structures, making them prone to failure during operation and requiring frequent maintenance. Summary of the Invention

[0003] The purpose of this invention is to provide a transfer device for the production of plastic bottle caps, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A transfer device for producing plastic bottle caps includes a feeding vibratory feeder. The output end of the feeding vibratory feeder transports the plastic bottle cap body to the conveyor belt of a belt conveyor. The belt conveyor is equipped with a transfer assembly, which includes a fixed frame. The fixed frame is fixedly installed on the outer wall of the belt conveyor. Inside the fixed frame, a stepper servo-rotating vertical cylinder is rotatably installed via bearing components. The bottom of the vertical cylinder is fixedly connected to the top center of a material distribution frame. The material distribution frame has multiple arc-shaped grooves arranged in a circular array at equal intervals. Multiple semi-circular tubes are fixedly installed on the inner wall of the material distribution frame. A main air nozzle for assisting in the transport of the plastic bottle cap body is fixedly installed at the arc-shaped opening end of each semi-circular tube. The main air nozzle is located inside the arc-shaped groove.

[0005] In a further embodiment, the main air nozzle is vertically flat, and multiple main air nozzles are provided inside a single arc-shaped groove. The main air nozzle is the output end of the air supply mechanism.

[0006] In a further embodiment, the gas supply mechanism includes an adapter, which is fixedly installed inside the top of the vertical cylinder. A main pipe is fixedly installed between the adapter and the circular opening end of the semi-circular pipe. A solenoid valve is installed on the main pipe. A pump body is fixedly installed after the top of the adapter passes through the vertical cylinder. The pump body is rotatably installed inside the mounting bracket via bearing components. A processor is fixedly installed outside the pump body. The pump body has an air intake function. A clamp is snapped inside the vertical cylinder and fitted onto the outside of the main pipe. The adapter is not fitted to the inner wall of the vertical cylinder. A through groove for wiring is provided on the vertical cylinder.

[0007] In a further embodiment, the vertical cylinder is driven to rotate by a rotating mechanism, which includes a stepper motor. The stepper motor is fixedly mounted on a fixed frame, and a drive gear is fixedly mounted on the outside of the output shaft of the stepper motor. A driven gear is fixedly mounted on the outside of the vertical cylinder, and the drive gear meshes with the driven gear.

[0008] In a further embodiment, the material distribution rack is equipped with an auxiliary component, which includes multiple arc-shaped tubes. The multiple arc-shaped tubes are fixedly installed inside the material distribution rack. A follower tube is fixedly installed between the adapter and the circular opening end of the arc-shaped tube. The follower tube is sleeved inside the clamp. A follower air nozzle is fixedly installed at the arc-shaped opening end of the arc-shaped tube. The follower air nozzle is located inside the arc-shaped groove. The arc-shaped tube is located directly below the semi-circular tube.

[0009] In a further embodiment, the outer surface of the air nozzle is V-shaped, with baffles on both inclined sides of the air nozzle and inclined openings on both inclined sides. The baffles are located inside the inclined openings, resulting in varying adsorption forces. Along the direction gradually approaching the main air nozzle, on the inclined side of the multiple sets of air nozzles facing away from the main air nozzle, the cross-section of the baffles gradually decreases, causing the inclined openings of the air nozzles on that side to gradually increase. Along the direction gradually approaching the main air nozzle, on the inclined side of the multiple sets of air nozzles facing the main air nozzle, the cross-section of the baffles gradually increases, causing the inclined openings of the air nozzles on that side to gradually decrease, thus making the plastic bottle cap body more stable when entering and exiting the arc-shaped groove.

[0010] In a further embodiment, a sensing component is provided on the outside of the feeding vibratory feeder. The sensing component includes multiple sets of first position sensors and second position sensors fixedly installed inside the side wall of the distribution rack. Compared with the first position sensor, the second position sensor is further away from the corresponding main air nozzle. The transmitting and receiving ends of the first and second position sensors on the arc-shaped groove are respectively located at both ends of the arc-shaped groove. When the first position sensor is activated first and then the second position sensor is activated, the processor cooperates with the control system to start the stepper motor to run once. A gas flow meter is fixedly installed inside the large end of the main air nozzle. When the average value of multiple gas flow meters inside a single arc-shaped groove decreases, the processor cooperates with the control system to activate the distance sensor. The distance sensor is fixedly installed on the mounting bracket. The distance sensor is located directly above the circular motion trajectory of the center of the arc side of the arc-shaped groove, and is used to automatically obtain the current opening orientation of the plastic bottle cap body.

[0011] In a further embodiment, the pump body has an air blowing function, and the material distribution rack is equipped with a flipping component. The flipping component includes a base plate, which is fixedly installed at the bottom of the material distribution rack. The base plate has multiple straight grooves, which are located directly below the corresponding arc-shaped grooves. The side of the straight groove closest to the center of the base plate is set as an arc surface. A bracket is fixedly installed on the top of the material distribution rack, and an asynchronous motor is fixedly installed on the bracket. An arc-shaped cover is fixedly installed on the output shaft of the asynchronous motor. An inclined frame is also fixedly installed on the top of the material distribution rack, and a rectangular cover is fixedly installed at the top of the inclined frame. In the standby state of the flipping component, the inclined end of the arc-shaped cover is in contact with the rectangular cover. In the start state of the flipping component, the inclined end of the arc-shaped cover is in contact with the conveyor belt, and its straight end is close to the rectangular cover.

[0012] In a further embodiment, the top of the rectangular cover has a through circular hole.

[0013] In a further embodiment, the material distribution rack is fitted with multiple conical covers, which are located below the corresponding rectangular covers.

[0014] Compared with the prior art, the present invention provides a transfer device for the production of plastic bottle caps, which has the following advantages: 1. This transfer device for plastic bottle cap production, by setting up transfer components, allows the vertical cylinder to rotate stepwise inside the fixed frame, causing multiple sets of arc-shaped grooves on the material distribution rack to periodically align with the output end of the feeding vibratory plate. As a result, the plastic bottle caps enter the arc-shaped grooves one by one. At the same time, multiple sets of main air nozzles on the semi-circular tube can stably adsorb the plastic bottle caps. After rotating 180 degrees, the suction disappears, and the caps are carried backward by the conveyor belt for continued transport. This avoids displacement and misalignment of the plastic bottle caps due to inertia when they are transferred from the feeding vibratory plate to the conveyor belt of the belt conveyor, enabling orderly transportation and transfer.

[0015] 2. This transfer device for plastic bottle cap production uses multiple main air nozzles arranged in a circumferential array within a single arc-shaped groove. These main air nozzles are vertically flat, allowing for stable adsorption of the plastic bottle caps. A gas supply mechanism, along with a pump's suction mode, adapter, processor, and corresponding solenoid valve, creates negative pressure inside the main pipe and semi-circular pipe. This activates the adsorption function of the main air nozzles within the arc-shaped groove. Once adsorption is complete, the plastic bottle caps are released from the arc-shaped groove. The device also features a through-groove for easy wiring. A certain gap is maintained between the adapter and the inner wall of the vertical cylinder. All these features contribute to a more integrated and space-saving transfer assembly.

[0016] 3. The transfer device for producing plastic bottle caps has a rotating mechanism. When the stepper motor is started, the driving gear rotates, and the driven gear drives the vertical cylinder to rotate stably in a stepping motion inside the fixed frame.

[0017] 4. This transfer device for plastic bottle cap production, through the setting of auxiliary components, in conjunction with the pump's suction mode, adapter, processor, and corresponding solenoid valve, creates negative pressure inside the corresponding arc-shaped tube and the auxiliary tube. This allows multiple sets of auxiliary air nozzles to simultaneously adsorb the plastic bottle cap body. The opening of the auxiliary air nozzle is smaller than that of the main air nozzle, and the auxiliary air nozzle is closer to the plastic bottle cap body being transferred. Therefore, the plastic bottle cap body will first be subjected to a smaller suction force from the auxiliary air nozzle, and after being adsorbed forward, it will be subjected to a larger suction force from the main air nozzle, thus creating a transition effect. This makes the movement of the plastic bottle cap body more stable. Combined with clamps, this makes the installation of the main and auxiliary tubes more stable.

[0018] 5. In this transfer device for producing plastic bottle caps, the height of the air nozzle in a single arc-shaped groove is lower than the height of the small end of the main air nozzle. That is, the arc-shaped tube outside the single arc-shaped groove is located below the semi-circular tube. This makes the air nozzle closer to the bottom of the plastic bottle cap body when it first picks up the plastic bottle cap body, while the center of the main air nozzle is closer to the middle of the plastic bottle cap body. This makes the plastic bottle cap body more stable during movement and less prone to rolling.

[0019] 6. The transfer device for producing plastic bottle caps uses two sets of mirrored air nozzles, each set containing multiple nozzles, to achieve balanced adsorption at both ends of the plastic bottle cap body, resulting in greater stability. The air nozzles are V-shaped with baffles on their two inclined sides, creating varying adsorption forces. As the plastic bottle cap body is drawn into the arc-shaped groove, the adsorption force from the multiple air nozzles gradually increases. When the corresponding solenoid valve of the main air nozzle is disconnected, ending the main adsorption force, the plastic bottle cap body gradually detaches from the arc-shaped groove, where the adsorption force from the multiple air nozzles also gradually increases, ensuring more stable entry and exit of the plastic bottle cap body from the arc-shaped groove.

[0020] 7. This transfer device for producing plastic bottle caps, by setting up sensing components, when the target plastic bottle cap body enters the corresponding arc-shaped groove, sequentially triggers the first position sensor and the second position sensor, thereby starting the stepper motor in the rotation mechanism to run 90 degrees, transferring the current plastic bottle cap body in a circular motion. The next arc-shaped groove is aligned with the output end of the feeding vibratory plate to receive the next plastic bottle cap body. When the current plastic bottle cap body continues to rotate 90 degrees, and the cumulative rotation reaches 180 degrees before being output from the arc-shaped groove, the second position sensor and the first position sensor will be triggered sequentially. Since the starting sequence is inconsistent with the preset sequence, it will not affect the operation of the stepper motor. In summary, it can improve the automation and intelligence level of the device.

[0021] 8. This transfer device for producing plastic bottle caps uses a gas flow meter installed inside the main air nozzle. When the target plastic bottle cap moves to the outside of the main air nozzle, the former will block the large end of the latter. The processor then obtains the average value of multiple gas flow meters in the arc groove and senses a decrease in the value, thus knowing that the plastic bottle cap has moved into position. Only then will the distance sensor be activated to determine the opening orientation of the plastic bottle cap. Specifically, when the opening is upward, the downward detection reflection path of the distance sensor is longer because the reflection point is located on the inner wall of the closed end of the plastic bottle cap. When the opening is downward, the downward detection reflection path of the distance sensor is shorter because the reflection point is located on the outer wall of the closed end of the plastic bottle cap. This allows for convenient and automatic acquisition of the position and opening orientation of the plastic bottle cap.

[0022] 9. This transfer device for producing plastic bottle caps, by setting up a flipping component in conjunction with the arc surface on the base plate, ensures that the plastic bottle cap body enters the arc-shaped groove and simultaneously enters the straight groove, thus being ultimately adsorbed onto the top surface of the base plate. This prevents contact with the conveyor belt during its circumferential transfer, avoiding premature conflict between the adsorption force and the conveyor belt's thrust, which could affect transport. When it is necessary to adjust the opening orientation of the plastic bottle cap body, the sensing component first obtains the current opening orientation. When uniform orientation is required for the entire batch, the following operation is performed for any non-compliant opening orientations of the target plastic bottle cap body: During the current 180-degree transfer of the plastic bottle cap body, the processor automatically and synchronously starts the asynchronous motor on the bracket, causing the arc-shaped cover to rotate. One end of the arc-shaped cover is aligned with the conveyor belt, and the other end is aligned with the rectangular cover on the inclined frame. The circular holes prevent the rectangular cover from... The obstruction of the distance sensor activates the pump's blowing mode, sending a powerful airflow from the main nozzle. The plastic bottle cap is blown into the curved cover, while airflow from the nozzle simultaneously provides auxiliary restraint at both ends. The curved cover's arc structure naturally adjusts the bottle cap by 180 degrees, quickly and naturally aligning its opening to the target direction. Guided by the conical cover, it falls back into the corresponding arc groove, which is the top surface of the base plate. The asynchronous motor of the bottle cap matching the target opening orientation for the current batch will not operate. The near-horizontal curved cover also prevents the newly entered bottle cap from rolling or shifting. In summary, this method allows for convenient adjustment of the opening orientation of the current batch of bottle caps and also provides a final auxiliary adjustment for any missing parts from previous orientation adjustment processes.

[0023] 10. This plastic bottle cap production transfer device, in conjunction with an industrial quality inspection camera on the frame, can inspect the plastic bottle caps that pass by below in sequence. Defective products are blown into the defective product box by the air blowing component, while qualified products continue to be transferred to the finished product box on the auxiliary conveyor component. This allows for the classification and transfer of qualified and unqualified plastic bottle caps. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective; Figure 3 For the present invention Figure 2 Enlarged structural diagram of region A in the middle; Figure 4 This is a schematic diagram of the frame and some structural connections of the present invention; Figure 5 For the present invention Figure 4 Enlarged structural diagram of region B in the middle; Figure 6This is a schematic cross-sectional view of the belt conveyor component of the present invention; Figure 7 This is a cross-sectional view of part of the structure of the present invention; Figure 8 This is a schematic diagram of the vertical cylinder and some structural connections of the present invention; Figure 9 This is an exploded view of part of the structure of the present invention; Figure 10 This is an exploded view of a portion of the structure from another perspective of the present invention; Figure 11 This is an exploded cross-sectional view of part of the structure of the present invention; Figure 12 For the present invention Figure 11 Enlarged structural diagram of region C in the middle; Figure 13 For the present invention Figure 11 A magnified schematic diagram of the D region; Figure 14 For the present invention Figure 11 Enlarged structural diagram of region E in the middle; Figure 15 This is a cross-sectional schematic diagram of the material distribution rack of the present invention; Figure 16 This is a cross-sectional view of the material distribution rack from another perspective of the present invention; Figure 17 For the present invention Figure 16 A magnified structural diagram of the middle F region; Figure 18 This is a schematic diagram of multiple sets of semi-circular tubes and arc-shaped tubes of the present invention; Figure 19 This is a schematic diagram of a single semi-circular tube and an arc-shaped tube of the present invention.

[0025] Explanation of icon numbers: 1. Vibratory feeder; 2. Plastic bottle cap body; 3. Belt conveyor; 4. Transfer assembly; 41. Fixing frame; 42. Vertical cylinder; 421. Through groove; 43. Material distribution frame; 44. Arc groove; 45. Semi-circular pipe; 46. Main air nozzle; 47. Air supply mechanism; 471. Adapter; 472. Main pipe; 473. Solenoid valve; 474. Pump body; 475. Processor; 48. Rotating mechanism; 481. Stepper motor; 482. Drive gear; 483. Driven gear; 49. Clamp; 5. Auxiliary components; 51. Arc-shaped tube; 52. Sub-tube; 53. Sub-air nozzle; 54. Baffle; 6. Sensing components; 61. First position sensor; 62. Second position sensor; 63. Gas flow meter; 64. Distance sensor; 7. Flip-over assembly; 71. Base plate; 72. Straight groove; 73. Curved surface; 74. Bracket; 75. Asynchronous motor; 76. Curved cover; 77. Slanted frame; 78. Rectangular cover; 79. Circular hole; 710. Conical cover; 8. Frame; 9. Industrial quality inspection camera; 10. Air blowing component; 11. Auxiliary conveyor component; 12. Finished product box; 13. Defective product box; 14. Protective cover. Detailed Implementation

[0026] 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.

[0027] In this application, the term "above" indicates the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is primarily used to better describe this application and its embodiments, and is not intended to limit the indicated device, element, or component to having a specific orientation, or to construct and operate in a specific orientation. Furthermore, the term "above" may also be used in certain circumstances to indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances. Example

[0028] Please see Figures 1-19 The present invention provides a technical solution: A transfer device for producing plastic bottle caps includes a feeding vibratory plate 1. The output end of the feeding vibratory plate 1 transports the plastic bottle cap body 2 to the conveyor belt of a belt conveyor 3. The belt conveyor 3 is equipped with a transfer component 4, which includes a fixed frame 41. The fixed frame 41 is fixedly installed on the outer wall of the belt conveyor 3. A stepper servo-rotating vertical cylinder 42 is rotatably installed inside the fixed frame 41 through bearing components. The bottom of the vertical cylinder 42 is fixedly connected to the top center of a material distribution frame 43. Four arc-shaped grooves 44 are evenly spaced in a circular array on the material distribution frame 43. Four semi-circular tubes 45 are fixedly installed on the inner wall of the material distribution frame 43. A main air nozzle 46 for assisting in the transport of the plastic bottle cap body 2 is fixedly installed at the arc-shaped opening end of the semi-circular tubes 45. The main air nozzle 46 is located inside the arc-shaped grooves 44. In addition, the belt conveyor 3 is set at the top of the frame 8. An industrial quality inspection camera 9 and an air blowing device 10 are fixedly installed on the frame 8. The detection end of the industrial quality inspection camera 9 is located directly above the plastic bottle cap body 2 on the conveyor belt. A defective product box 13 is also placed on the frame 8. The defective product box 13 is located in front of the output end of the air blowing device 10. An auxiliary conveyor 11 is set outside the frame 8. A finished product box 12 is placed on the conveyor belt of the auxiliary conveyor 11 to receive qualified plastic bottle cap bodies 2. A protective cover 14 is fixedly installed at the top of the frame 8 to protect the industrial quality inspection camera 9. Example

[0029] Please see Figure 5 , Figure 11 and Figure 19 Based on Embodiment 1, the main air nozzle 46 is vertically flat, and three main air nozzles 46 are provided inside a single arc-shaped groove 44. The main air nozzle 46 is the output end of the air supply mechanism 47. In addition, the air supply mechanism 47 includes an adapter 471, which is fixedly installed inside the top of the vertical cylinder 42. A main pipe 472 is fixedly installed between the adapter 471 and the circular opening end of the semi-circular tube 45. A solenoid valve 473 is provided on the main pipe 472. A pump body 474 is fixedly installed after the top of the adapter 471 passes through the vertical cylinder 42. The pump body 474 is rotatably installed inside the fixing frame 41 through a bearing. A processor 475 is fixedly installed outside the pump body 474. The pump body 474 has an air intake function. A clamp 49 is snapped into the inside of the vertical cylinder 42. The clamp 49 is sleeved on the outside of the main pipe 472. The adapter 471 is not in contact with the inner wall of the vertical cylinder 42. A through groove 421 for wiring is opened on the vertical cylinder 42. Example

[0030] Please see Figure 6 Based on Embodiment 1, the vertical cylinder 42 is driven to rotate by the rotating mechanism 48. The rotating mechanism 48 includes a stepper motor 481, which is fixedly mounted on the fixed frame 41. A drive gear 482 is fixedly mounted on the outside of the output shaft of the stepper motor 481, and a driven gear 483 is fixedly mounted on the outside of the vertical cylinder 42. The drive gear 482 meshes with the driven gear 483. Example

[0031] Please see Figure 18 Based on Embodiments 1, 2 and 3, an auxiliary component 5 is provided on the material distribution rack 43. The auxiliary component 5 includes four arc-shaped tubes 51, which are fixedly installed inside the material distribution rack 43. A connecting tube 52 is fixedly installed between the adapter 471 and the circular opening end of the arc-shaped tube 51. The connecting tube 52 is sleeved inside the clamp 49. An air nozzle 53 is fixedly installed at the arc-shaped opening end of the arc-shaped tube 51. The air nozzle 53 is located inside the arc-shaped groove 44, and the arc-shaped tube 51 is located directly below the semi-circular tube 45. Example

[0032] Please see Figure 11 , Figure 13 , Figure 14 and Figure 17 Based on Embodiments 1, 2, 3, and 4, the nozzle 53 is configured in a V-shape, with baffles 54 on both inclined sides of the nozzle 53 and inclined openings on both inclined sides. The baffles 54 are located inside the inclined openings, resulting in varying adsorption forces. Along the direction gradually approaching the main nozzle 46, on the inclined sides of the three sets of nozzles 53 facing away from the main nozzle 46, the cross-section of the baffles 54 gradually decreases, causing the inclined openings of the nozzle 53 on that side to gradually increase. Along the direction gradually approaching the main nozzle 46, on the inclined sides of the three sets of nozzles 53 facing the main nozzle 46, the cross-section of the baffles 54 gradually increases, causing the inclined openings of the nozzle 53 on that side to gradually decrease. This makes the plastic bottle cap body 2 more stable when entering and exiting the arc-shaped groove 44. Example

[0033] Please see Figure 7 and Figure 17 Based on Embodiments 1, 2, and 3, a sensing component 6 is provided on the outside of the feeding vibratory feeder 1. The sensing component 6 includes four sets of first position sensors 61 and second position sensors 62 fixedly installed inside the side wall of the distribution frame 43. Compared with the first position sensors 61, the second position sensors 62 are further away from the corresponding main air nozzle 46. The transmitting and receiving ends of the first position sensors 61 and the second position sensors 62 on the corresponding arc-shaped groove 44 are located at both ends of the arc-shaped groove 44, respectively, so as to satisfy the condition that the first position sensor 61 is activated first, and then the main air nozzle 46 is activated. When the second position sensor 62 is activated, the processor 475, in coordination with the control system, starts the stepper motor 481 to run in one step. A gas flow meter 63 is fixedly installed inside the large end of the main gas nozzle 46. When the average value of the three gas flow meters 63 inside the single arc-shaped groove 44 decreases, the processor 475, in coordination with the control system, activates the distance sensor 64. The distance sensor 64 is fixedly installed on the mounting bracket 41. The distance sensor 64 is located directly above the circular motion trajectory of the center of the arc side of the arc-shaped groove 44, and is used to automatically obtain the current opening orientation of the plastic bottle cap body 2. Example

[0034] Please see Figure 7 , Figure 8 , Figure 9 and Figure 12Based on Embodiments 1, 2, 3, and 6, the pump body 474 has a blowing function. The pump body 474 is a miniature blowing and suction dual-purpose pump. A flipping assembly 7 is provided on the material distribution rack 43. The flipping assembly 7 includes a base plate 71, which is fixedly installed at the bottom of the material distribution rack 43. Four straight grooves 72 are opened on the base plate 71. The straight grooves 72 are located directly below the corresponding arc-shaped grooves 44. The side of the straight groove 72 closest to the center of the base plate 71 is set as an arc surface 73. A bracket 74 is fixedly installed on the top of the material distribution rack 43, and an asynchronous motor 7 is fixedly installed on the bracket 74. 5. An arc-shaped cover 76 is fixedly installed on the output shaft of the asynchronous motor 75. An inclined frame 77 is also fixedly installed on the top of the material distribution frame 43. A rectangular cover 78 is fixedly installed on the top of the inclined frame 77. In the standby state of the flipping component 7, the inclined end of the arc-shaped cover 76 is in contact with the rectangular cover 78. In the start state of the flipping component 7, the inclined end of the arc-shaped cover 76 is in contact with the conveyor belt, and its straight end is close to the rectangular cover 78. In addition, a through round hole 79 is opened on the top of the rectangular cover 78. In addition, four conical covers 710 are snapped on the material distribution frame 43. The conical covers 710 are located below the corresponding rectangular covers 78.

[0035] Working principle: After the device is started, the control system connects to 220V mains power to supply power to all electrical components. The feeding vibratory feeder 1 starts first, and through its own vibration, it organizes the plastic bottle cap bodies 2 to be transferred in an orderly manner, ensuring that the plastic bottle cap bodies 2 are output one by one from the output end in a uniform posture. At the same time, the transfer assembly 4 starts synchronously, and its internal rotating mechanism 48 starts to operate. The stepper motor 481 in the rotating mechanism 48 starts after receiving the control signal from the processor 475. The output shaft of the stepper motor 481 drives the drive gear 482 to rotate. Since the drive gear 482 is fixedly installed on the outside of the vertical cylinder 42... Driven gears 483 mesh with each other, and under the action of gear transmission, vertical cylinder 42 achieves stable step-by-step rotation inside fixed frame 41 through bearing components, with precise and controllable rotation angle; the bottom of vertical cylinder 42 is fixedly connected to the top center of distribution frame 43, thereby driving distribution frame 43 to rotate synchronously in a step-by-step manner. Multiple sets of arc-shaped grooves 44 with equal spacing in a circular array on distribution frame 43 rotate with distribution frame 43 and periodically align with the output end of feeding vibratory plate 1. At this time, the plastic bottle cap body 2 output by feeding vibratory plate 1 enters the arc-shaped groove 44 one by one smoothly under the action of vibration friction, completing the initial connection between feeding and transfer.

[0036] As the plastic bottle cap body 2 enters the arc-shaped groove 44, under the action of the friction force output by the feeding vibrating plate 1, it simultaneously enters the straight groove 72 opened on the bottom plate 71 of the flipping assembly 7. The side of the straight groove 72 near the center of the bottom plate 71 is set as an arc surface 73. This arc surface 73 plays a guiding role, preventing the plastic bottle cap body 2 from getting stuck when entering the straight groove 72, and guiding the plastic bottle cap body 2 to move smoothly. Finally, the plastic bottle cap body 2 is attracted to the top surface of the bottom plate 71 by the subsequent adsorption force. This design can ensure that the plastic bottle cap body 2 remains separated from the conveyor belt of the belt conveyor 3 throughout the entire circumferential transfer process, effectively avoiding premature confrontation between the adsorption force and the friction force of the conveyor belt, preventing the plastic bottle cap body 2 from shifting or rolling during the transfer process, and ensuring the stability of the conveying process.

[0037] When the plastic bottle cap body 2 enters the arc-shaped groove 44, the first position sensor 61 and the second position sensor 62 in the sensing component 6 are triggered sequentially. The first position sensor 61 and the second position sensor 62 are fixedly installed inside the side wall of the dispensing rack 43. The first position sensor 61 is farther away from the main air nozzle 46 than the second position sensor 62. The transmitting and receiving ends of the two sensors are located at the two ends of the arc-shaped groove 44, which can just detect the entry state of the plastic bottle cap body 2. The first position sensor 61 and the second position sensor 62 convert the detected signals into electrical signals and transmit them to the processor 475. After analyzing and processing the received signals, the processor 475 immediately sends a control command to the stepper motor 481 in the rotating mechanism 48, controlling the stepper motor 481 to run precisely 90 degrees, driving the dispensing rack. 43 rotates 90 degrees synchronously, transferring the arc-shaped groove 44 currently carrying the plastic bottle cap body 2 in a circular motion. At the same time, the next empty arc-shaped groove 44 is precisely aligned with the output end of the feeding vibratory plate 1 to receive the next plastic bottle cap body 2, realizing continuous and orderly feeding and transfer. When the current plastic bottle cap body 2 continues to rotate 90 degrees with the feeding rack 43, and the cumulative rotation angle reaches 180 degrees and is about to be output from the arc-shaped groove 44 to the belt conveyor 3, the same set of second position sensors 62 and first position sensors 61 will be triggered again in sequence. However, since the triggering sequence is opposite to the preset start sequence, after the processor 475 recognizes the abnormal signal, it will not send additional running instructions to the stepper motor 481, ensuring that the stepper motor 481 maintains a stable stepping rhythm, further improving the automation and intelligent transfer level of the device.

[0038] After the plastic bottle cap body 2 enters the arc-shaped groove 44 and triggers the sensing component 6, the air supply mechanism 47 responds immediately. Under the control of the processor 475, the pump body 474 starts the suction mode. The pump body 474 establishes a connection with the main pipe 472 and the secondary pipe 52 through the adapter 471. At this time, the processor 475 controls the corresponding solenoid valve 473 to open, so that the main pipe 472 and the semi-circular pipe 45 form a sealed communication channel. Under the suction action of the pump body 474, the air inside the main pipe 472 and the semi-circular pipe 45 is drawn out, forming a stable negative pressure environment. Since the main air nozzle 46 is fixedly installed at the arc-shaped opening end of the semi-circular pipe 45, and the main air nozzle 46 is located in the arc-shaped groove 44. In the first part, the negative pressure environment is transmitted to the main air nozzle 46 through the semi-circular tube 45, so that multiple sets of main air nozzles 46 can start the adsorption function simultaneously to stably adsorb the plastic bottle cap body 2 in the arc groove 44 and prevent it from falling off during the transfer process. At the same time, the auxiliary component 5 starts working simultaneously. The suction mode of the pump body 474 is transmitted to the slave tube 52 through the adapter 471. With the opening of the corresponding solenoid valve 473, a negative pressure is also formed inside the arc tube 51 and the slave tube 52. The slave air nozzle 53 fixedly installed at the arc opening end of the arc tube 51 starts the adsorption function simultaneously. Multiple sets of slave air nozzles 53 assist in the adsorption of the plastic bottle cap body 2, further improving the stability of adsorption.

[0039] The auxiliary component 5 has a clear structural difference between the secondary air nozzle 53 and the main air nozzle 46. The opening size of the secondary air nozzle 53 is smaller than that of the main air nozzle 46, and the installation position of the secondary air nozzle 53 is closer to the plastic bottle cap body 2 that is being transported compared to the main air nozzle 46. Therefore, when the plastic bottle cap body 2 enters the arc groove 44, it will initially be subjected to a smaller suction force generated by the secondary air nozzle 53, and will be slowly sucked forward under the action of this suction force. After it moves into the suction range of the main air nozzle 46, it will then be subjected to a larger suction force generated by the main air nozzle 46. This "small to large" suction force transition effect can effectively prevent the plastic bottle cap body 2 from shifting or deforming due to a sudden large suction force, ensuring that its movement process is smooth and stable; clamp 49 secures. Connected inside the vertical cylinder 42 and sleeved outside the main pipe 472 and the secondary pipe 52, it provides a firm fixation for the main pipe 472 and the secondary pipe 52, preventing the pipes from loosening or shifting due to vibration during equipment operation, and improving the installation stability of the entire air supply system. In addition, the height of the secondary air nozzle 53 in a single arc groove 44 is lower than the height of the small end of the main air nozzle 46, that is, the arc-shaped pipe 51 is located directly below the semi-circular pipe 45. This height difference design makes the secondary air nozzle 53 closer to the bottom of the plastic bottle cap body 2 and the main air nozzle 46 closer to the middle of the plastic bottle cap body 2, forming a coordinated adsorption pattern, effectively preventing the plastic bottle cap body 2 from rolling or tilting during movement and transportation, and further ensuring transportation stability.

[0040] The nozzle 53 is designed with a V-shaped structure, and baffles 54 are fixedly installed on both of its inclined sides. The baffles 54 allow for adjustment of the suction force. Multiple sets of inclined surfaces on the side of the nozzle 53 facing away from the main nozzle 46 gradually decrease in cross-sectional area as they approach the main nozzle 46, resulting in a gradual increase in the opening size of that inclined surface and consequently, a gradual increase in suction force. Conversely, multiple sets of inclined surfaces on the side of the nozzle 53 facing the main nozzle 46 gradually increase in cross-sectional area as they approach the main nozzle 46, resulting in... The opening size of the inclined surface gradually decreases, and the adsorption force gradually increases accordingly. This design ensures that when the plastic bottle cap body 2 is sucked into the arc groove 44, the adsorption force from the air nozzle 53 gradually increases as it moves, ensuring a smooth adsorption process and avoiding damage caused by excessive instantaneous suction. When the plastic bottle cap body 2 is removed from the arc groove 44, the adsorption force from the air nozzle 53 also gradually increases, which can provide a certain buffering effect on the plastic bottle cap body 2, preventing it from falling freely due to a sudden loss of adsorption force, and ensuring that the process of the plastic bottle cap body 2 entering and leaving the arc groove 44 is stable and controllable.

[0041] A gas flow meter 63 is fixedly installed inside the large end of the main air nozzle 46. The gas flow meter 63 can detect the gas flow rate inside the main air nozzle 46 in real time and transmit the detection data to the processor 475 in real time. When the plastic bottle cap body 2 is attracted to the outside of the main air nozzle 46, it will block the large end of the main air nozzle 46, causing the gas flow rate inside the main air nozzle 46 to decrease, which in turn causes the value detected by the gas flow meter 63 to decrease significantly. The processor 475 receives and analyzes the detection data of multiple gas flow meters 63 in real time. When the average detection value of multiple gas flow meters 63 in the current arc groove 44 decreases and reaches a preset threshold, it can be determined that the plastic bottle cap body 2 has been attracted in place. At this time, the processor 475 immediately sends a start command to the distance sensor 64 to start the distance sensor 64. The distance sensor 64 is fixedly installed on the mounting bracket 41 and is located directly above the circular motion trajectory of the center of the arc side of the arc groove 44. It can accurately detect the closed end position of the plastic bottle cap body 2 by detecting the length of the reflection path. The orientation of the opening of the plastic bottle cap body 2 is determined by the following logic: Both the transmitter and receiver of the distance sensor 64 are aligned downwards with the central area of ​​the plastic bottle cap body 2 within the arc-shaped groove 44. When the opening of the plastic bottle cap body 2 faces upwards, the distance sensor 64 detects the reflection point at the bottom surface of the inner cavity of the plastic bottle cap body 2, and the measured distance value is D1. A longer detection reflection path results in a larger D1 value. When the opening of the plastic bottle cap body 2 faces downwards, the distance sensor 64 detects the reflection point at the outer wall of the top surface of the plastic bottle cap body 2, and the measured distance... The distance value is D2. The shorter the detection reflection path, the smaller the value of D2. The magnitude of D1 and D2 is used as the intuitive judgment basis: when D1>D2, it is determined that the opening of the plastic bottle cap body 2 is facing upward; when D1≤D2, it is determined that the opening of the plastic bottle cap body 2 is facing downward. The difference between D1 and D2 is the inner cavity depth of the plastic bottle cap body 2 of this batch. In this way, the movement position and opening orientation of the plastic bottle cap body 2 can be obtained automatically and conveniently and accurately, which can meet the detection needs of different batches of plastic bottle cap bodies 2 in industrial production. The distance sensor 64 in this device is an industrial-grade ranging sensor, adapted to the detection needs of different batches of plastic bottle cap bodies 2. The installation position calibration, detection angle calibration, and judgment threshold adjustment must be completed before the device is used for the first time, after replacing a batch of plastic bottle cap bodies 2, or after the sensor is disassembled and reassembled. The specific operation and logic are as follows: The mounting bracket 41 has a reserved sensor mounting groove. During installation, the distance sensor 64 is slid to be directly above the circular motion trajectory of the center of the arc side of the arc groove 44. The sensor mounting base is calibrated by a level to ensure that the detection probe is vertically downward and has no left, right or front and back tilt. Take the standard plastic bottle cap body 2 from the current batch and place it at the center of one side of the arc groove 44 ring. Adjust the sensor height so that D1 measured when the opening of the plastic bottle cap body 2 is facing upwards and D2 measured when the opening is facing downwards are both within the effective distance measurement range of the sensor (the recommended distance measurement range is 5-20cm). Tighten the sensor fixing bolts to complete the position and angle calibration. After calibration, make installation scale marks to avoid subsequent offset. This device uses an intuitive logic for judging numerical values. The core judgment relationship is: D1>D2→opening upwards; D1≤D2→opening downwards. No complex electrical logic conversion is required. The numerical comparison threshold can be set by the processor 475. When changing the bottle cap batch, take 10-20 standard bottle caps from the batch and place them in the center of one side of the arc groove 44 ring. Measure the average D1 value (D1 average) when the opening is facing upwards and the average D2 value (D2 average) when the opening is facing downwards. If there are industrial environmental errors (such as reflection on the bottle cap surface or slight vibration of the conveyor belt), an error threshold △ can be set in the processor 475 control system (△ is recommended to be 0.5-2mm, and adjusted according to the actual production environment). After adjustment, the judgment logic is as follows: when D1-D2>△, the bottle cap opening is determined to be upward; when D1-D2≤△, the bottle cap opening is determined to be downward. After the threshold is set, the accuracy of the judgment can be verified by testing with 3-5 defective bottle caps (such as deformed or missing material). If a misjudgment occurs, the error threshold △ is finely adjusted until the detection is accurate.

[0042] When it is necessary to adjust the opening orientation of the plastic bottle cap body 2 in this batch to keep it uniform, the processor 475 will make targeted adjustments to the plastic bottle cap body 2 that does not conform to the target orientation based on the opening orientation information detected by the distance sensor 64 in the sensing component 6. During the 180-degree circumferential transfer of the plastic bottle cap body 2 with the material distribution rack 43, the processor 475 automatically and synchronously sends a start command to the asynchronous motor 75 in the flipping component 7. The asynchronous motor 75 is fixedly installed on the bracket 74. After starting, its output shaft drives the arc-shaped cover 76 to rotate until the arc-shaped cover 76 rotates. One end of the 6 is tightly fitted to the conveyor belt of the belt conveyor 3, and the other end is precisely aligned with the rectangular cover 78 fixedly installed at the top of the inclined frame 77; the top of the rectangular cover 78 has a through circular hole 79, the position of which corresponds to the detection direction of the distance sensor 64, which can effectively prevent the rectangular cover 78 from blocking the detection path of the distance sensor 64 and ensure the normal operation of the distance sensor 64; then, the processor 475 controls the pump body 474 to switch to the blowing mode, and the high-pressure gas generated by the pump body 474 is transmitted to the main gas through the adapter 471, the main pipe 472 and the semi-circular pipe 45. The main air nozzle 46 blows out a strong airflow, propelling the plastic bottle cap body 2 from the top surface of the base plate 71 into the interior of the arc-shaped cover 76. Simultaneously, the high-pressure gas from the pump body 474 is transmitted through the adapter 471, the pipe 52, and the arc-shaped pipe 51 to the auxiliary air nozzle 53. The auxiliary air nozzle 53 blows out a gentle airflow, which assists in limiting the two ends of the plastic bottle cap body 2, preventing it from shifting or colliding inside the arc-shaped cover 76. Driven by the strong airflow, the plastic bottle cap body 2 moves in an arc along the arc-shaped structure of the arc-shaped cover 76, naturally completing a 180-degree rotation during the movement, with the opening facing... The orientation is quickly adjusted to the target orientation; after the flipping is completed, under the guidance of the conical cover 710, the plastic bottle cap body 2 falls back into the top surface of the bottom plate 71 in the corresponding arc groove 44 to continue the subsequent transfer; for the plastic bottle cap body 2 whose opening orientation meets the target requirements, its corresponding asynchronous motor 75 will not run, and the arc cover 76 will remain in a horizontal standby state. At this time, the horizontal arc cover 76 can also block the plastic bottle cap body 2 that has just entered the arc groove 44, preventing it from rolling or shifting in the early stage of transfer, thus achieving the dual effect of orientation adjustment and transfer protection.

[0043] When the plastic bottle cap body 2 completes a 180-degree circumferential transfer with the material distribution rack 43, and its opening orientation has been adjusted to meet the requirements, the processor 475 immediately sends a closing command to the solenoid valve 473 at the corresponding position. After the solenoid valve 473 closes, it first closes the connection channel between the main pipe 472 and the pump body 474, and then closes the connection channel between the secondary pipe 52 and the pump body 474. The air supply mechanism 47 stops the air intake operation, and the negative pressure environment inside the main air nozzle 46 and the secondary air nozzle 53 disappears in sequence, and the adsorption force is released. At this time, the plastic bottle cap body 2 will first be adsorbed onto the conveyor belt by the secondary air nozzle 53. Then, after the secondary air nozzle 53 also loses its adsorption force, it will be carried backward at a uniform speed by the conveyor belt under the action of the friction force of the conveyor belt of the belt conveyor 3, and continue to be transported to the upper area of ​​the frame 8, completing the core transfer process of the transfer component 4.

[0044] The frame 8 serves as the mounting base for the entire device. The industrial quality inspection camera 9, fixedly mounted on its top, starts synchronously. The inspection end of the industrial quality inspection camera 9 faces the conveyor belt of the belt conveyor 3, allowing for comprehensive inspection of the plastic bottle cap bodies 2 passing beneath it. Inspection includes checking the appearance integrity and dimensional accuracy of the plastic bottle cap bodies 2. Inspection data is transmitted in real-time to the processor 475, which determines whether the plastic bottle cap bodies 2 are qualified. When a defective product is detected, the processor 475 immediately sends a control command to the air blowing component 10. The air blowing component 10 starts and blows out a high-pressure airflow, blowing the defective plastic bottle cap bodies 2 from the conveyor belt into the defective product box 13, completing the collection of defective products. For qualified plastic bottle cap bodies 2, they continue to move along the conveyor belt... After transfer, the product is finally conveyed to the conveyor belt of the auxiliary conveyor 11, and then transferred to the finished product box 12 by the auxiliary conveyor 11 to complete the collection of qualified products and realize the automatic classification and transfer of qualified and unqualified products of plastic bottle cap body 2. The protective cover 14 fixedly installed at the top of the frame 8 can effectively block the corrosion and collision of external dust, debris and other objects on the industrial quality inspection camera 9, play a good protective role, and extend the service life of the industrial quality inspection camera 9. The through groove 421 opened on the vertical cylinder 42 and the adapter 471 leave a certain distance between them and the inner wall of the vertical cylinder 42 for the wiring of various electrical components of the equipment, avoiding messy and tangled wiring that affects the operation of the equipment. At the same time, it makes the layout of each component of the transfer assembly 4 more compact, improves the overall integration level, and effectively saves the installation space of the equipment.

[0045] All electrical components appearing in this application are electrically connected to the control system, processor 475, and 220V AC mains power. The control system is a conventional, known device capable of controlling the feeding vibratory feeder 1, belt conveyor 3, adapter 471, solenoid valve 473, pump 474, processor 475, stepper motor 481, first position sensor 61, second position sensor 62, gas flow meter 63, distance sensor 64, asynchronous motor 75, industrial quality inspection camera 9, air blowing device 10, and auxiliary conveyor 11. The signal interaction of each component adopts the PLC control protocol commonly used in industrial equipment, which is common knowledge to those skilled in the art and can be implemented without further detailed description. The control logic and signal interaction method are existing technologies and will not be elaborated further. The standard parts used in this application can all be purchased from the market. The specific connection methods of each part are all conventional methods such as riveting and welding, which are mature technologies in the prior art. The standard parts all adopt conventional models in the prior art, and the circuit connections adopt conventional connection methods in the prior art, which will not be described in detail here.

[0046] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0047] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A transfer device for producing plastic bottle caps, comprising a feeding vibratory plate (1), wherein the output end of the feeding vibratory plate (1) transports and transfers the plastic bottle cap body (2) onto the conveyor belt of a belt conveyor (3), characterized in that: The belt conveyor (3) is provided with a transfer component (4), which includes a fixed frame (41). The fixed frame (41) is fixedly installed on the outer wall of the belt conveyor (3). A stepper servo-rotating vertical cylinder (42) is rotatably installed inside the fixed frame (41) through a bearing component. The bottom of the vertical cylinder (42) is fixedly connected to the top center of the material distribution rack (43). Multiple arc-shaped grooves (44) are evenly spaced in a circular array on the material distribution rack (43). Multiple semi-circular tubes (45) are fixedly installed on the inner wall of the material distribution rack (43). A main air nozzle (46) for assisting in the transport of the plastic bottle cap body (2) is fixedly installed at the arc-shaped opening end of the semi-circular tube (45). The main air nozzle (46) is located inside the arc-shaped groove (44).

2. The transfer device for producing plastic bottle caps according to claim 1, characterized in that: The main air nozzle (46) is vertically flat, and multiple main air nozzles (46) are provided inside a single arc groove (44). The main air nozzle (46) is the output end of the air supply mechanism (47).

3. The transfer device for producing plastic bottle caps according to claim 2, characterized in that: The gas supply mechanism (47) includes an adapter (471), which is fixedly installed inside the top of the vertical cylinder (42). A main pipe (472) is fixedly installed between the adapter (471) and the circular opening end of the semi-circular pipe (45). A solenoid valve (473) is provided on the main pipe (472). A pump body (474) is fixedly installed after the top of the adapter (471) passes through the vertical cylinder (42). The pump body (474) is rotatably installed inside the fixing frame (41) through a bearing component. A processor (475) is fixedly installed outside the pump body (474). The pump body (474) has an air intake function. A clamp (49) is snapped inside the vertical cylinder (42). The clamp (49) is sleeved on the outside of the main pipe (472). The adapter (471) is not in contact with the inner wall of the vertical cylinder (42). A through groove (421) for wiring is opened on the vertical cylinder (42).

4. The transfer device for producing plastic bottle caps according to claim 3, characterized in that: The vertical cylinder (42) is driven to rotate by a rotating mechanism (48). The rotating mechanism (48) includes a stepper motor (481), which is fixedly mounted on a fixed frame (41). A drive gear (482) is fixedly mounted on the outside of the output shaft of the stepper motor (481), and a driven gear (483) is fixedly mounted on the outside of the vertical cylinder (42). The drive gear (482) meshes with the driven gear (483).

5. The transfer device for producing plastic bottle caps according to claim 3, characterized in that: The material distribution rack (43) is provided with an auxiliary component (5), which includes multiple arc-shaped tubes (51). The multiple arc-shaped tubes (51) are fixedly installed inside the material distribution rack (43). A conduit (52) is fixedly installed between the adapter (471) and the circular opening end of the arc-shaped tube (51). The conduit (52) is sleeved inside the clamp (49). A conduit nozzle (53) is fixedly installed at the arc-shaped opening end of the arc-shaped tube (51). The conduit nozzle (53) is located inside the arc-shaped groove (44). The arc-shaped tube (51) is located directly below the semi-circular tube (45).

6. The transfer device for producing plastic bottle caps according to claim 5, characterized in that: The outer part of the air nozzle (53) is set in a V shape. Baffles (54) are provided on both inclined sides of the air nozzle (53), and inclined openings are opened on both inclined sides of the air nozzle (53). The baffles (54) are located inside the inclined openings, so that the resulting adsorption forces are different. Along the direction gradually approaching the main air nozzle (46), on the inclined side of the multiple sets of air nozzles (53) facing away from the main air nozzle (46), the cross-section of the baffles (54) gradually decreases, so that the inclined openings of the air nozzles (53) on this side gradually increase. Along the direction gradually approaching the main air nozzle (46), on the inclined side of the multiple sets of air nozzles (53) facing the main air nozzle (46), the cross-section of the baffles (54) gradually increases, so that the inclined openings of the air nozzles (53) on this side gradually decrease, so that the plastic bottle cap body (2) can enter and exit the arc groove (44) more stably.

7. The transfer device for producing plastic bottle caps according to claim 4, characterized in that: The feeding vibratory plate (1) is equipped with a sensing component (6) on its exterior. The sensing component (6) includes multiple sets of first position sensors (61) and second position sensors (62) fixedly installed inside the side wall of the material distribution frame (43). The first position sensors (61) and second position sensors (62) are further away from the corresponding main air nozzle (46). The transmitting end and receiving end of the first position sensor (61) and the second position sensor (62) on the corresponding arc groove (44) are located at both ends of the arc groove (44), respectively, so that the first position sensor (61) is activated first, and then the second position sensor (62) is activated. When the processor (475) cooperates with the control system to start the stepper motor (481) to run step by step once, a gas flow meter (63) is fixedly installed inside the large end of the main air nozzle (46). When the average value of multiple gas flow meters (63) inside a single arc groove (44) decreases, the processor (475) cooperates with the control system to start the distance sensor (64). The distance sensor (64) is fixedly installed on the fixing frame (41). The distance sensor (64) is located directly above the circumferential motion trajectory of the center of the arc side of the arc groove (44) and is used to automatically obtain the current opening orientation of the plastic bottle cap body (2).

8. The transfer device for producing plastic bottle caps according to claim 7, characterized in that: The pump body (474) has an air blowing function. The material distribution rack (43) is provided with a flipping component (7). The flipping component (7) includes a base plate (71). The base plate (71) is fixedly installed at the bottom of the material distribution rack (43). The base plate (71) has multiple straight grooves (72). The straight grooves (72) are located directly below the corresponding arc grooves (44). The side of the straight groove (72) near the center of the base plate (71) is set as an arc surface (73). The top of the material distribution rack (43) is fixedly installed with a bracket (74). An asynchronous motor (75) is fixedly installed on the frame (74). An arc-shaped cover (76) is fixedly installed on the output shaft of the asynchronous motor (75). An inclined frame (77) is also fixedly installed on the top of the material distribution frame (43). A rectangular cover (78) is fixedly installed on the top of the inclined frame (77). In the standby state of the flipping component (7), the inclined end of the arc-shaped cover (76) is attached to the rectangular cover (78). In the start state of the flipping component (7), the inclined end of the arc-shaped cover (76) is attached to the conveyor belt, and its straight end is close to the rectangular cover (78).

9. The transfer device for producing plastic bottle caps according to claim 8, characterized in that: The rectangular cover (78) has a through circular hole (79) at the top.

10. The transfer device for producing plastic bottle caps according to claim 8, characterized in that: Multiple conical covers (710) are snapped onto the material distribution rack (43). The conical covers (710) are located below the corresponding rectangular covers (78). The belt conveyor (3) is set at the top of the frame (8). An industrial quality inspection camera (9) and an air blowing device (10) are fixedly installed on the frame (8). The detection end of the industrial quality inspection camera (9) is located directly above the plastic bottle cap body (2) on the conveyor belt. A defective box (13) is also placed on the frame (8). The defective box (13) is located in front of the output end of the air blowing device (10). An auxiliary conveyor (11) is set outside the frame (8). A finished product box (12) is placed on the conveyor belt of the auxiliary conveyor (11) to receive qualified plastic bottle cap bodies (2). A protective cover (14) is fixedly installed at the top of the frame (8) to protect the industrial quality inspection camera (9).

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