A weighing and sealing device for a paper diaper production line

Abstract

The application relates to a weighing and sealing device for a paper diaper production line, and relates to the technical field of the paper diaper production line, which comprises a material collecting box. The application forms a full-process automatic operation system by arranging a feeding conveying line, a weighing device, a material pushing assembly, a sealing device body, a limiting assembly and a discharging conveying line. When working, the feeding conveying line automatically conveys the carton after the carton is boxed to the weighing device, the weighing device completes weight detection, qualified cartons enter the sealing device body after being arranged and limited by the limiting assembly, the adhesive tape wheel of the sealing device body releases the adhesive tape, the flattening roller flattens the adhesive tape, the cutter cuts the adhesive tape, automatic sealing is completed, and finally the discharging conveying line conveys the qualified cartons to subsequent links; unqualified cartons are automatically transferred to the material collecting box by the material pushing assembly. The whole process does not need manual participation in sealing and unqualified product sorting, labor consumption and operation difference caused by manual operation are avoided, the number of manual configuration of the production line is reduced, and human cost is reduced.

Description

Technical Field

[0001] This application relates to the field of diaper production line technology, and in particular to a weighing and sealing device for a diaper production line. Background Technology

[0002] As a core consumable in the daily lives of modern infants and young children, the market demand for diapers has been increasing year by year. To meet market supply, manufacturers are constantly pursuing increased production capacity and optimized production efficiency while ensuring product quality and safety. However, current diaper production lines still face significant efficiency bottlenecks in the final packaging stage: existing production lines require multiple workers to participate in the packaging process, especially in the sealing process before the packaging cartons come off the line, where manual operation is generally relied upon for actions such as applying tape, flattening, and cutting. This manual sealing method not only requires workers to continuously invest physical labor, but also easily leads to unstable sealing quality due to differences in human operation. Furthermore, the large number of workers required per production line results in high labor costs. At the same time, the speed of manual operation is difficult to match with the automated packing rhythm at the front end of the production line, often resulting in cartons piling up waiting to be sealed. This severely restricts the continuous operating efficiency of the entire production line and cannot meet the needs of enterprises for large-scale and efficient production. Furthermore, while some production lines have attempted to introduce simple mechanical structures to assist in sorting defective cartons, the push plates in existing auxiliary sorting structures mostly use fixed connections (such as welding or one-piece molding). When the push plates experience wear and deformation after long-term use, or when the push plate dimensions need to be adjusted according to different carton sizes, the fixed connections are difficult to disassemble, requiring specialized tools and considerable time. This not only affects equipment maintenance efficiency but may also damage other components of the sorting structure due to improper operation during disassembly, further increasing equipment maintenance costs and the risk of production interruption. Therefore, a weighing and sealing device for diaper production lines is provided. Utility Model Content

[0003] The purpose of this application is to provide a weighing and sealing device for a diaper production line, which features reduced labor costs and easy replacement of the push plate.

[0004] This application provides a weighing and sealing device for a diaper production line, employing the following technical solution: It includes a collection bin, a feeding conveyor line for conveying packed diaper cartons, a weighing device for weight detection of the cartons and transferring them to the next station, a pushing component for transferring unqualified cartons to a defective product area, a sealing device body for sealing qualified cartons, a limiting component for material handling and limiting the cartons during the sealing process, and a feeding conveyor line for conveying qualified sealed cartons. The sealing device body includes a flattening roller for pressing tape onto the carton opening and a cutter for cutting the tape. The pushing component includes a transmission chamber, inside which a forward and reverse motor is fixedly connected. A threaded column is fixedly connected to the output end of the forward and reverse motors. A threaded tube is threadedly connected to the end of the threaded column away from the forward and reverse motors. A push plate is provided at the end of the threaded tube away from the threaded column. The collection box is located in the corresponding area of ​​the push plate. A connecting rod is fixedly connected to the side of the push plate. A groove adapted to the connecting rod is opened at the end of the threaded tube near the connecting rod. A through hole is opened on the surface of the connecting rod. A limit hole is provided inside the groove. A limit rod is movably connected to the surface of the threaded tube near the connecting rod. One end of the limit rod passes through the through hole and is engaged inside the limit hole. A handle is fixedly connected to the other end of the limit rod. A spring passes through the surface of the limit rod. One end of the spring is fixedly connected to the handle near the threaded tube, and the other end is fixedly connected to the threaded tube. By adopting the above technical solution, and by setting up a collection bin, a feeding conveyor line, a weighing device, a pushing component, a sealing device body, a limiting component, and a discharging conveyor line, a complete automated process for diaper cartons from conveying, weighing, sorting to sealing and discharging is constructed. The feeding conveyor line automatically feeds cartons, replacing manual handling and reducing labor input; the weighing device automatically detects the weight of the cartons, avoiding errors and inefficiencies associated with manual weighing; the pushing component transfers unqualified cartons to the collection bin, eliminating the need for manual sorting and reducing manual workload; the sealing device body's flattening rollers and cutters work together to automatically seal, replacing manual tape application and cutting operations, solving the problems of time-consuming and labor-intensive manual sealing that affect production efficiency in existing technologies; the discharging conveyor line automatically conveys finished products, ensuring continuous production and further improving overall production efficiency. When wear and deformation occur, requiring replacement, or when the push plate size needs to be adjusted according to carton specifications, simply pull the handle to disengage the limit rod from the limit hole and through hole to quickly remove the push plate. No special tools are needed, significantly reducing disassembly difficulty, saving disassembly time, and improving equipment maintenance efficiency. Furthermore, no other parts of the pusher assembly need to be operated during disassembly, effectively avoiding damage to components such as the transmission chamber and threaded tube due to improper disassembly, reducing equipment maintenance costs, lowering the risk of production interruption, and solving the problems of inconvenient maintenance, increased costs, and interruption risks caused by the fixed connection of the push plate in the existing technology.

[0005] Preferably, a slider is fixedly connected to one end of the threaded tube inside the transmission chamber, and a groove adapted to the slider is provided inside the transmission chamber, with the slider movably connected inside the groove.

[0006] By adopting the above technical solution, a slider is set at the end of the threaded tube, and a matching groove is set in the transmission chamber. The sliding cooperation between the slider and the groove guides the movement of the threaded tube. When the forward and reverse motors of the pushing assembly drive the threaded column to rotate, it can effectively prevent the threaded tube from rotating synchronously with the threaded column, ensuring that the threaded tube moves stably along the axial direction. This, in turn, drives the pusher plate to smoothly push out unqualified cartons, preventing inaccurate pushing position, missed pushing, or damage to cartons due to the deviation of the threaded tube, and improving the stability and reliability of the pushing assembly.

[0007] Preferably, the limiting component is an adjustable structure, and the limiting component can adjust its width according to the specifications of the carton to adapt to diaper packaging cartons of different sizes.

[0008] By adopting the above technical solution, the limiting component is designed as an adjustable structure, allowing its width to be adjusted according to the carton specifications. When dealing with diaper packaging cartons of different sizes, there is no need to replace the dedicated limiting component; simply adjusting the width of the limiting component is sufficient to handle and limit the material of different cartons, ensuring that all types of cartons enter the sealing device in a neat posture and guaranteeing consistent sealing quality. This design improves the adaptability of the device to different product specifications, avoids the need for companies to configure separate equipment for cartons of different sizes, reduces equipment investment costs, and meets diverse production needs.

[0009] Preferably, a counting sensor is installed above the opening of the limiting component to detect the incoming carton and count the passing cartons.

[0010] By adopting the above technical solution, a counting sensor is installed above the opening of the limiting component, which can detect the incoming cartons in real time and count them automatically. This eliminates the need for manual counting of the number of cartons, avoiding omissions and errors caused by manual counting. It provides production managers with accurate product output data, facilitating the monitoring of production progress, adjustment of production plans, and inventory management. This improves the precision of production control and reduces production management problems caused by errors in manual counting.

[0011] Preferably, the sealing device body further includes a belt pulley for holding rolls of tape, and the end of the tape in the belt pulley can extend out and adhere to the carton.

[0012] By adopting the above technical solution, a belt roller is added to the sealing device body to hold rolls of adhesive tape, and the ends of the tape can be directly adhered to the carton. Compared to manually pulling and cutting the tape, the belt roller can continuously supply tape for the sealing process. Combined with the movement of the carton, the tape is automatically pulled and covered, eliminating the need for frequent manual tape replenishment, further reducing manual intervention and improving sealing efficiency. At the same time, the rolls of tape are easier to store when placed on the belt roller, reducing tape waste and lowering production costs.

[0013] Preferably, the weighing device and the pushing assembly are electrically connected through an external controller. The weighing device can feed back the detected carton weight information to the pushing assembly through the external controller to control the pushing assembly to start or stop.

[0014] By adopting the above technical solution, and electrically connecting the weighing device and the pushing assembly, the weighing device can feed back the weight detection results to the pushing assembly in real time, enabling automatic start and stop control of the pushing assembly. When a defective carton is detected, the pushing assembly can quickly start and promptly transfer the defective product; when a qualified carton is detected, the pushing assembly remains stationary, without affecting the conveying of qualified cartons. This electrical connection design achieves automated linkage between weighing and sorting, avoiding delays caused by manual judgment and operation, reducing the risk of production process interruption, and improving sorting efficiency and accuracy.

[0015] Preferably, the flattening roller is located behind the tape pulley, and the flattening roller can flatten the tape on the surface of the carton opening during the tape pulling and sealing process.

[0016] By adopting the above technical solution, the flattening roller is positioned behind the belt conveyor. As the tape is pulled from the belt conveyor and covers the carton opening, the flattening roller immediately follows, pressing the tape flat onto the carton surface. This effectively eliminates air bubbles between the tape and the carton, preventing wrinkles and curling edges on the tape, ensuring a tight seal, improving sealing quality, and preventing problems such as openings and product spillage during subsequent transportation due to insecure sealing, thus ensuring product safety during transport.

[0017] Preferably, both the slider and the working surface of the groove are provided with a wear-resistant layer.

[0018] By adopting the above technical solution, a wear-resistant layer is applied to the working surfaces of the slider and the groove, reducing frictional loss during relative sliding. During long-term operation of the feeding assembly, the wear rate of the slider and the groove is significantly reduced, preventing increased sliding clearance and decreased feeding accuracy due to component wear. This extends the service life of the slider and the groove, reduces the frequency and cost of component maintenance and replacement, and ensures the long-term stable operation of the feeding assembly.

[0019] In summary, this application includes at least one of the following beneficial technical effects: This weighing and sealing device for a diaper production line forms a fully automated operation system by setting up a feeding conveyor line, a weighing device, a pushing component, a sealing device body, a limiting component, and a discharging conveyor line. During operation, the feeding conveyor line automatically transports the packed cartons to the weighing device. After the weighing device completes the weight detection, qualified cartons are controlled by the limiting component and then enter the sealing device body. The sealing device body's belt rollers release the tape, the flattening rollers flatten the tape, and the cutter cuts the tape, automatically completing the sealing process. Finally, the uncharging conveyor line transports the sealed cartons to subsequent stages. Unqualified cartons are automatically transferred to a collection bin by the pushing component. The entire process requires no manual intervention in sealing and sorting of defective products, avoiding the physical exertion and operational inconsistencies of manual operations. This reduces the number of workers on the production line, lowers labor costs, and ensures consistent sealing quality, solving the problems of time-consuming, labor-intensive, and inconsistent quality associated with manual sealing in existing technologies. Furthermore, addressing the inconvenience of disassembling the push plate in existing auxiliary sorting structures, a connecting rod fixed to the side of the push plate can be inserted into the groove of the threaded tube. A limiting rod passes through the through hole of the connecting rod and engages with the limiting hole in the groove for fixation. When the push plate becomes worn, deformed, or needs replacement, or when its size needs to be adjusted according to carton specifications, simply pull the handle to disengage the limiting rod from the limiting hole and through hole for quick removal of the push plate. This eliminates the need for specialized tools, significantly reducing disassembly difficulty, saving time, and improving equipment maintenance efficiency. Moreover, disassembly does not require operation on other components of the pusher assembly, effectively preventing damage to the transmission chamber, threaded tube, and other components due to improper disassembly, reducing equipment maintenance costs, lowering the risk of production interruption, and resolving the problems of inconvenient maintenance, increased costs, and interruption risks caused by the fixed connection of the push plate in existing technologies. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present application. Figure 2 This is a cross-sectional structural schematic diagram of the pusher assembly of this application; Figure 3 for Figure 2 Schematic diagram of the structure at point A; Figure 4 This is a structural schematic diagram of the position of the counting sensor in this application; Figure 5 This is a schematic diagram showing a partial cross-section of the slider in this application; Figure 6 This is a cross-sectional structural diagram of the connection between the threaded pipe and the push plate in this application.

[0021] In the picture: 1. Material collection bin; 2. Feeding conveyor line; 3. Weighing device; 4. Pushing assembly; 401. Transmission chamber; 402. Forward and reverse motors; 403. Threaded column; 404. Threaded tube; 405. Push plate; 406. Slider; 407. Slide groove; 408. Wear-resistant layer; 409. Connecting rod; 410. Groove; 411. Through hole; 412. Limiting hole; 413. Limiting rod; 414. Spring; 415. Handle; 5. Sealing device body; 501. Flattening roller; 502. Cutting tool; 503. Belt pulley; 6. Limiting assembly; 7. Unloading conveyor line; 8. Counting sensor. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1 -Appendix Figure 6 This application will be described in further detail below.

[0023] Example 1: A weighing and sealing device for a diaper production line, referring to... Figure 1 , Figure 2 and Figure 6The system includes a collection bin 1, a feeding conveyor line 2 for conveying diaper cartons after packaging, a weighing device for weighing cartons and transferring them to the next station, a pushing assembly for transferring cartons that do not meet the weight requirements to the defective product area, a sealing device body for sealing cartons that meet the weight requirements, a limiting assembly for limiting the material handling of cartons during the sealing process, and a feeding conveyor line 7 for conveying qualified cartons after sealing. The sealing device body 5 includes a flattening roller 501 for pressing tape onto the opening of the carton and a cutter 502 for cutting the tape. The pushing assembly 4 includes a transmission chamber 401, inside which a forward and reverse motor 402 is fixedly connected. A threaded post 403 is fixedly connected to the output end of the forward and reverse motor 402. A threaded tube 404 is threadedly connected to the end of the threaded post 403 away from the forward and reverse motor 402. A push plate 405 is provided at the end of the threaded tube 404 away from the threaded post 403. The collection bin 1 is located on the push plate. Area 405 corresponds to; a connecting rod 409 is fixedly connected to the side of the push plate 405. A groove 410, adapted to the connecting rod 409, is provided at one end of the threaded tube 404 near the connecting rod 409. A through hole 411 is provided on the surface of the connecting rod 409. A limiting hole 412 is provided inside the groove 410. A limiting rod 413 is movably connected to one end of the threaded tube 404 near the connecting rod 409. One end of the limiting rod 413 passes through the through hole 411 and is engaged inside the limiting hole 412. 13. A handle 415 is fixedly connected to the other end. A spring 414 is passed through the surface of the limiting rod 413. One end of the spring 414 is fixedly connected to the handle 415 near the threaded tube 404, and the other end is fixedly connected to the threaded tube 404. By setting up a collection box 1, a feeding conveyor line 2, a weighing device 3, a pushing component 4, a sealing device body 5, a limiting component 6, and a discharging conveyor line 7, a complete automated process for diaper cartons from conveying, weighing, sorting to sealing and discharging is constructed.The feeding conveyor line 2 automatically feeds cartons, replacing manual handling and reducing labor input; the weighing device 3 automatically detects the weight of the cartons, avoiding errors and inefficiencies associated with manual weighing; the pushing component 4 transfers defective cartons to the collection bin 1, eliminating the need for manual sorting and reducing workload; the sealing device body 5 uses flattening rollers 501 and cutters 502 to automatically seal the boxes, replacing manual tape application and cutting operations, solving the problems of time-consuming and labor-intensive manual sealing that affect production efficiency in existing technologies; the unloading conveyor line 7 automatically transports finished products, ensuring continuous production and further improving overall production efficiency. When the pusher plate 405 shows wear or deformation... When the push plate 405 needs to be replaced or its size needs to be adjusted according to the carton specifications, simply pull the handle 415 to disengage the limiting rod 413 from the limiting hole 412 and the through hole 411 to quickly remove the push plate 405. This eliminates the need for specialized tools, significantly reducing disassembly difficulty, saving disassembly time, and improving equipment maintenance efficiency. Furthermore, the disassembly process does not require operation on other components of the push assembly 4, effectively preventing damage to components such as the transmission chamber 401 and threaded tube 404 due to improper disassembly. This reduces equipment maintenance costs, lowers the risk of production interruption, and solves the problem of inconvenient maintenance, increased costs, and the risk of interruption caused by the fixed connection of the push plate 405 in the prior art.

[0024] Reference Figure 1 , Figure 2 and Figure 3 A slider 406 is fixedly connected to one end of the threaded tube 404, which is movably connected inside the transmission chamber 401. A groove 407 adapted to the slider 406 is provided inside the transmission chamber 401. The slider 406 is movably connected inside the groove 407. The limiting component 6 is an adjustable structure. The limiting component 6 can adjust its width according to the specifications of the carton to adapt to different sizes of diaper packaging cartons. The slider 406 is provided at the end of the threaded tube 404, and a matching groove 407 is provided inside the transmission chamber 401. The sliding cooperation between the slider 406 and the groove 407 guides the movement of the threaded tube 404. When the forward and reverse motors 402 of the pushing assembly 4 drive the threaded column 403 to rotate, it effectively prevents the threaded tube 404 from rotating synchronously with the threaded column 403, ensuring that the threaded tube 404 moves stably along the axial direction. This, in turn, drives the push plate 405 to smoothly push unqualified cartons, preventing inaccurate pushing positions, missed pushing, or damage to cartons due to the deviation of the threaded tube 404. This improves the stability and reliability of the pushing assembly 4. The limiting assembly 6 is designed as an adjustable structure, allowing its width to be adjusted according to the carton specifications. When dealing with diaper packaging cartons of different sizes, there is no need to replace the dedicated limiting component. Simply adjusting the width of the limiting assembly 6 is sufficient to handle and limit the cartons, ensuring that all types of cartons enter the sealing device body 5 in a neat posture, guaranteeing stable sealing quality. This design improves the adaptability of the device to different product specifications, avoiding the need for companies to configure separate equipment for cartons of different sizes, reducing equipment investment costs, and meeting diverse production needs.

[0025] Reference Figure 1 , Figure 2 and Figure 4 A counting sensor 8 is installed above the opening of the limiting component 6 to detect the incoming cartons and count the passing cartons. The sealing device body 5 also includes a belt roller 503 for holding rolls of adhesive tape. The end of the tape in the belt roller 503 can extend and adhere to the cartons. The counting sensor 8 installed above the opening of the limiting component 6 can detect the incoming cartons in real time and count them automatically. This eliminates the need for manual counting of the number of cartons passing through, avoiding omissions and errors caused by manual counting. It provides production managers with accurate product output data, facilitating the monitoring of production progress, adjustment of production plans, and inventory management. This improves the precision of production control and reduces production management problems caused by manual counting errors. The belt roller 503 added to the sealing device body 5 is used to hold rolls of adhesive tape, and the end of the tape can be directly adhered to the cartons. Compared to manual extraction and cutting of tape, the tape pulley 503 can continuously supply tape for the sealing process. With the movement of the carton, the tape is automatically pulled and covered, eliminating the need for frequent manual tape replenishment, further reducing manual intervention and improving sealing efficiency. At the same time, the roll of tape placed on the tape pulley 503 is easier to store, reducing tape waste and lowering production costs.

[0026] Reference Figure 1 , Figure 2 and Figure 5The weighing device 3 and the pushing assembly 4 are electrically connected via an external controller. The weighing device 3 can feed back the detected carton weight information to the pushing assembly 4 through the external controller to control the starting or stopping of the pushing assembly 4. The flattening roller 501 is located behind the belt pulley 503. The flattening roller 501 can flatten the belt on the carton opening surface during the belt pulling and sealing process. The working surfaces of the slider 406 and the chute 407 are both provided with wear-resistant layers 408. By electrically connecting the weighing device 3 and the pushing assembly 4, the weighing device 3 can feed back the weight detection result to the pushing assembly 4 in real time, realizing the automatic start and stop control of the pushing assembly 4. When a defective carton is detected, the pushing assembly 4 can quickly respond and start to transfer the defective product in time; when a qualified carton is detected, the pushing assembly 4 remains stationary and does not affect the conveying of qualified cartons. This electrical connection design achieves automated linkage between weighing and sorting, avoiding delays caused by manual judgment and operation, reducing the risk of production process interruptions, and improving sorting efficiency and accuracy. The flattening roller 501 is positioned behind the belt pulley 503. As the tape is pulled from the belt pulley 503 and covers the carton opening, the flattening roller 501 immediately follows to flatten the tape onto the carton surface. This effectively eliminates air bubbles between the tape and the carton, preventing wrinkles and curling edges on the tape, ensuring a tight fit between the tape and the carton, improving sealing quality, and preventing problems such as open seals and product spillage during subsequent transportation, thus ensuring product transportation safety. A wear-resistant layer 408 is provided on the working surfaces of the slider 406 and the chute 407 to reduce frictional wear during relative sliding. During long-term operation, the wear rate of slider 406 and slide 407 of pusher assembly 4 is greatly reduced, avoiding the situation where the sliding fit clearance increases and the pusher accuracy decreases due to component wear. This extends the service life of slider 406 and slide 407, reduces the frequency and cost of device maintenance and component replacement, and ensures the long-term stable operation of pusher assembly 4.

[0027] In this embodiment, a fully automated operation system is formed by setting up a feeding conveyor line 2, a weighing device 3, a pushing component 4, a sealing device body 5, a limiting component 6, and a discharging conveyor line 7. During operation, the feeding conveyor line 2 automatically transports the packed cartons to the weighing device 3. After the weighing device 3 completes the weight detection, qualified cartons are limited by the limiting component 6 and then enter the sealing device body 5. The sealing device body 5 uses a belt roller 503 to release the tape, a flattening roller 501 to flatten the tape, and a cutter 502 to cut the tape, automatically completing the sealing. Finally, the uncharging conveyor line 7 transports the unqualified cartons to the subsequent stages. Unqualified cartons are automatically transferred to the collection bin 1 by the pushing component 4. The entire process requires no manual intervention in sealing and sorting of defective products, avoiding the physical exertion and operational inconsistencies of manual operation. This reduces the number of personnel required for the production line, lowers labor costs, and ensures the stability of sealing quality, solving the problems of time-consuming, labor-intensive, and unstable quality in existing manual sealing technologies. In addition, addressing the issue of inconvenient disassembly of the push plate 405 in the existing auxiliary sorting structure, the connecting rod 409, which is fixedly connected to the side of the push plate 405, can be inserted into the groove 410 of the threaded tube 404. The limiting rod 413 passes through the through hole 411 of the connecting rod 409 and is locked in the limiting hole 412 of the groove 410 for fixation. When the push plate 405 is worn or deformed and needs to be replaced, or when the size of the push plate 405 needs to be adjusted according to the carton specifications, simply pull the handle 415 to drive the limit rod 413 out of the limit hole 412 and the through hole 411 to quickly remove the push plate 405. No special tools are needed, which greatly reduces the difficulty of disassembly, saves disassembly time, and improves equipment maintenance efficiency. Moreover, no other parts of the push assembly 4 need to be operated during the disassembly process, which effectively avoids damage to the transmission chamber 401, threaded tube 404 and other parts due to improper disassembly, reduces equipment maintenance costs, reduces the risk of production interruption, and solves the problem of inconvenient maintenance, increased costs and interruption risks caused by the fixed connection of the push plate 405 in the prior art.

[0028] The implementation principle of this application embodiment is as follows: Cartons containing diapers packed by the front-end packing machine of the production line are first conveyed to the feeding conveyor line 2. The feeding conveyor line 2 moves the cartons at a preset speed, gradually conveying them to the subsequent weight detection station, providing stable material conveying support for subsequent weighing operations. When the cartons reach the weighing device 3 along with the feeding conveyor line 2, the weighing device 3 starts and performs weight detection on the cartons to determine whether the number of diapers in the cartons meets the standard. Simultaneously, the weighing device 3 and the pushing assembly 4 are electrically connected through an external controller, and the detected weight information is converted into an electrical signal in real time and fed back to the pushing assembly 4 through the external controller, providing a control basis for the starting or stopping of the pushing assembly 4. If the weighing device 3 detects that the weight of the cartons is below standard, its feedback electrical signal will trigger the pushing assembly 4 to start: the forward and reverse motor 402 inside the transmission chamber 401 of the pushing assembly 4 starts operating, driving its output end fixedly connected... The threaded column 403 rotates synchronously. Since the threaded column 403 is threadedly connected to the threaded tube 404, and the end of the threaded tube 404 extending into the transmission chamber 401 is fixedly connected to the slider 406, which is movably connected to the groove 407 adapted in the transmission chamber 401, the cooperation between the slider 406 and the groove 407 restricts the threaded tube 404 from rotating synchronously with the threaded column 403, causing the threaded tube 404 to move axially towards the carton along the threaded column 403. The push plate 405 at the end of the threaded tube 404 away from the threaded column 403 moves synchronously with the threaded tube 404. After contacting the unqualified carton, it pushes it away from the feeding conveyor line 2. Finally, the unqualified carton falls into the collection box 1, which is pre-set in the corresponding area of ​​the push plate 405, completing the automatic sorting of the unqualified carton. After sorting, the forward and reverse motors 402 rotate in reverse, driving the threaded column 403 to rotate in reverse, so that the threaded tube 404 and the push plate 405 are reset, waiting for the next sorting instruction.During this process, the wear-resistant layer 408 on the working surfaces of the slider 406 and the chute 407 reduces frictional loss during relative sliding, ensuring stable operation of the pushing assembly 4. If the weighing device 3 detects that the carton weight meets the standard, the pushing assembly 4 does not receive a start signal and remains stationary. Qualified cartons continue to move under the drive of the feeding conveyor line 2 and enter the station corresponding to the limiting assembly 6. Workers can adjust the width of the limiting assembly 6 according to the specifications of the batch of cartons, so that the limiting assembly 6 can perform material handling and limiting functions on the moving qualified cartons, correcting paper... To prevent any misalignment of the carton, the system ensures that the carton enters the subsequent sealing station in a neat and orderly manner. Simultaneously, a counting sensor 8 installed above the opening of the limiting component 6 automatically records a count when a qualified carton passes by, providing real-time statistics on the number of products conveyed. After being limited by the limiting component 6, the qualified carton continues to move to the sealing station corresponding to the sealing device body 5. A roll of adhesive tape is pre-placed on the belt pulley 503 in the sealing device body 5, with its end extending out and adhering to the starting end of the carton opening. As the carton continues to move, the tape is removed from the belt pulley... The tape is pulled down from the sealing device 503, gradually covering the carton opening. Because the flattening roller 501 is located behind the tape pulley 503 and can press down to adhere to the carton surface, as the tape is pulled to cover the carton opening, the flattening roller 501 moves with the carton, pressing the tape tightly against the carton opening surface to prevent air bubbles or wrinkles. When the carton has completely passed through the sealing device body 5 and the tape has fully covered the carton opening, the cutter 502 in the sealing device body 5 is activated to cut the tape, completing the sealing of a single qualified carton. The automatic sealing operation is as follows: After the qualified carton is sealed, it moves from the sealing device body 5 to the unloading conveyor line 7 under the drive of the conveyor force. The unloading conveyor line 7 drives the finished carton to move and transport it to the subsequent storage, transfer or other processing links of the production line, thus completing the entire weighing and sealing process; In addition, the connecting rod 409 fixedly connected to the side of the push plate 405 can be inserted into the groove 410 of the threaded tube 404. The limiting rod 413 passes through the through hole 411 of the connecting rod 409 and is locked in the limiting hole 412 of the groove 410 to achieve fixation. When the push plate 405 is worn or deformed and needs to be replaced, or when the size of the push plate 405 needs to be adjusted according to the carton specifications, simply pull the handle 415 to drive the limit rod 413 out of the limit hole 412 and the through hole 411 to quickly remove the push plate 405. No special tools are needed, which greatly reduces the difficulty of disassembly, saves disassembly time, and improves equipment maintenance efficiency. Moreover, no other parts of the push assembly 4 need to be operated during the disassembly process, which effectively avoids damage to the transmission chamber 401, threaded tube 404 and other parts due to improper disassembly, reduces equipment maintenance costs, reduces the risk of production interruption, and solves the problem of inconvenient maintenance, increased costs and interruption risks caused by the fixed connection of the push plate 405 in the prior art.

Claims

1. A weighing and sealing device for a diaper production line, comprising a collection box (1), characterized in that, It also includes a feeding conveyor line (2) for conveying diaper cartons after packaging, a weighing device (3) for weighing the cartons and transferring them to the next station, a pushing assembly (4) for transferring cartons that do not meet the weight requirements to the defective product area, a sealing device body (5) for sealing cartons that meet the weight requirements, a limiting assembly (6) for limiting the cartons during the sealing process, and a feeding conveyor line (7) for conveying qualified cartons after sealing. The sealing device body (5) includes... The feeding assembly (4) includes a pressing roller (501) for pressing tape onto the opening of a carton and a cutting tool (502) for cutting the tape. The feeding assembly (4) includes a transmission chamber (401) with a forward / reverse motor (402) fixedly connected inside. A threaded post (403) is fixedly connected to the output end of the forward / reverse motor (402). A threaded tube (404) is threadedly connected to the end of the threaded post (403) away from the forward / reverse motor (402). The threaded tube (404) is located away from the threaded post. (403) A push plate (405) is provided at one end, and the collection box (1) is located in the corresponding area of ​​the push plate (405). A connecting rod (409) is fixedly connected to the side of the push plate (405). A groove (410) adapted to the connecting rod (409) is opened at one end of the threaded tube (404) near the connecting rod (409). A through hole (411) is opened on the surface of the connecting rod (409). A limit hole (412) is provided inside the groove (410). The threaded tube (404) A limiting rod (413) is movably connected to one end of the connecting rod (409). One end of the limiting rod (413) passes through the through hole (411) and is engaged inside the limiting hole (412). A handle (415) is fixedly connected to the other end of the limiting rod (413). A spring (414) passes through the surface of the limiting rod (413). One end of the spring (414) and the handle (415) are fixedly connected to the side near the threaded tube (404), and the other end is fixedly connected to the threaded tube (404).

2. The weighing and sealing device for a diaper production line according to claim 1, characterized in that: The threaded tube (404) is movably connected to a slider (406) inside the transmission chamber (401). The transmission chamber (401) is provided with a groove (407) that is adapted to the slider (406). The slider (406) is movably connected inside the groove (407).

3. The weighing and sealing device for a diaper production line according to claim 1, characterized in that: The limiting component (6) is an adjustable structure. The limiting component (6) can adjust its width according to the specifications of the carton to adapt to different sizes of diaper packaging cartons.

4. The weighing and sealing device for a diaper production line according to claim 1, characterized in that: A counting sensor (8) is installed above the opening of the limiting component (6) to detect the incoming carton and count the passing cartons.

5. A weighing and sealing device for a diaper production line according to claim 1, characterized in that: The sealing device body (5) also includes a belt pulley (503) for holding a roll of tape, and the end of the tape in the belt pulley (503) can extend out and stick to the carton.

6. The weighing and sealing device for a diaper production line according to claim 1, characterized in that: The weighing device (3) and the pushing assembly (4) are electrically connected through an external controller. The weighing device (3) can feed back the detected carton weight information to the pushing assembly (4) through the external controller to control the pushing assembly (4) to start or stop.

7. A weighing and sealing device for a diaper production line according to claim 5, characterized in that: The flattening roller (501) is located behind the tape pulley (503), and the flattening roller (501) can flatten the tape on the surface of the carton opening during the tape pulling and sealing process.

8. A weighing and sealing device for a diaper production line according to claim 2, characterized in that: The working surfaces of both the slider (406) and the groove (407) are provided with wear-resistant layers (408).

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