Sanitary napkin production system

Abstract

The utility model relates to the technical field of sanitary towel packaging equipment, and particularly discloses a sanitary towel production system which comprises a packaging bag conveying device, a packaging bag feeding device, a conveying bag opening device, a product feeding device, a product pushing device, a heat sealing device and a product conveying device. The packaging bag conveying device comprises a packaging bag chain conveyor, a plurality of mounting cushion blocks are arranged on the packaging bag chain conveyor, a plurality of positioning rods and limiting plates are arranged on the mounting cushion blocks, the positioning rods and the limiting plates are alternately arranged, and the distance between every two adjacent limiting plates is matched with the width of a packaging bag; the conveying and bag opening device comprises a packaging bag belt conveyor and a bag opening mechanism, a vacuum box is arranged in the packaging bag belt conveyor, and a plurality of adsorption holes are formed in a belt. By the adoption of the technical scheme, the technical problem that in the prior art, in the previous bag feeding process, workers need to detect the opening directions of packaging bags one by one through naked eyes or a detection instrument, and consequently the overall production efficiency is reduced can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of sanitary napkin packaging equipment, in particular to a sanitary napkin production system. Background Art

[0002] At present, when producing sanitary napkins, it is necessary not only to individually package a single sanitary napkin, but also to repackage multiple (e.g., 10, 8, etc.) individually packaged sanitary napkins to form a final product that is convenient for sale and carrying. When repackaging multiple independently packaged sanitary napkins, it is necessary to go through processes such as bag feeding, bag opening, filling, and heat sealing. The prior art sets a corresponding device for each process to complete the corresponding operation.

[0003] However, since the devices that complete each process are independent of each other, staff are needed to complete the connection operations between the processes. On the one hand, the work efficiency between the devices, as well as the operating efficiency of the staff and the work efficiency of the devices do not match, resulting in low overall production efficiency; on the other hand, when the staff places the semi-finished products into the devices of the corresponding processes, it is easy for the problems of improper placement may occur, resulting in a decrease in the quality of the final product.

[0004] In addition, when individually packaged sanitary napkins are repackaged, during the bag opening, filling, heat sealing and other processes, each device has very high precision requirements for the direction of the bag opening. Therefore, in the previous bag feeding process, workers are required to check the direction of the bag opening one by one with the naked eye or detection instruments, resulting in a decrease in overall production efficiency. Utility Model Content

[0005] The utility model is intended to provide a sanitary napkin production system to solve the technical problem in the prior art that in the preceding bag feeding process, workers are required to detect the opening directions of packaging bags one by one by the naked eye or with a detection instrument, which results in reduced overall production efficiency.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The sanitary napkin production system comprises a packaging bag conveying device, a packaging bag loading device and a conveying and opening bag device connected in sequence, as well as a product loading device, a product pushing device, a heat sealing device and a product conveying device connected in sequence; the packaging bag conveying device comprises a packaging bag chain conveyor, a plurality of mounting pads are provided on the packaging bag chain conveyor along the conveying direction, a plurality of positioning rods and limit plates are provided on the mounting pads along the conveying direction, the positioning rods and the limit plates are alternately arranged, and the distance between two adjacent limit plates matches the width of the packaging bag; the conveying and opening bag device comprises a packaging bag belt conveyor and a bag opening mechanism connected in sequence, a protective cover is provided at the feeding end of the packaging bag belt conveyor, a support plate is provided at the discharging end of the packaging bag belt conveyor, a vacuum box is provided in the packaging bag belt conveyor, the vacuum box is connected to an external vacuum pumping system, the top of the vacuum box is open and the top of the vacuum box is in contact with the belt of the packaging bag belt conveyor, and a plurality of adsorption holes are provided on the belt of the packaging bag belt conveyor.

[0008] The principle and beneficial effects of this program:

[0009] In actual application, the front end of the packaging bag is closed, the rear end is not closed, and a positioning hole is opened at the rear end of the packaging bag, and the positioning hole is used to hang the final packaged product for display and sale; the staff hangs a certain number of packaging bags (for example, 50) on the positioning rod through the positioning hole, and the packaging bag chain conveyor conveys the stacked packaging bags to the packaging bag feeding device, and the packaging bag feeding device feeds the stacked packaging bags one by one onto the packaging bag belt conveyor, and the packaging bag belt conveyor conveys the single packaging bag to the bag opening mechanism, and the upper suction head and the lower suction head are used to open the bag. The attached heads respectively adsorb the upper and lower sides of the packaging bag, and the bag opening drive component drives the upper adsorption head and the lower adsorption head to move away from each other to realize the opening of the packaging bag; the product loading device conveys the stacked products to the product pushing device, and the number of each stack of products matches the specifications on the packaging bag. The product pushing device pushes a stack of products into the opened packaging bag, and pushes the packaging bag connected to the product inside it to the heat sealing device, and the heat sealing device heat-seals the rear end of the packaging bag to form the final product, and the product conveying device conveys the final product to the subsequent packaging and boxing process.

[0010] 1. This solution uses the positioning holes opened at the rear end of the packaging bag to hang the packaging bag stack on the positioning rod. Since the distance between two adjacent limiting plates matches the width of the packaging bag, the packaging bag can only be placed between the two adjacent limiting plates in the manner of "opening toward the conveying bag opening device" or "opening away from the conveying bag opening device". The operator can quickly distinguish the opening end of the packaging bag according to the relative position of the positioning holes on the packaging bag, and detect the opening direction of the packaging bag, so as to accurately and quickly place the opening end of the packaging bag toward the conveying bag opening device to ensure the smooth progress of subsequent processes and improve overall production efficiency. This solution uses the original positioning holes of the packaging bag to realize the rapid detection of the opening position of the packaging bag without adding additional detection equipment, which is conducive to reducing equipment costs.

[0011] 2. This solution connects the devices of each process in the repackaging process of independently packaged sanitary napkins in sequence, without the need for staff to complete the connection operations between the processes. On the one hand, the working efficiency of each device can be adjusted to match each other, and the problem of mismatch between the operating efficiency of the staff and the working efficiency of the device can be avoided, which is conducive to improving the overall production efficiency; on the other hand, the devices of each process are connected in sequence to automatically complete the transportation and transfer of semi-finished products, which can avoid the problem of improper placement caused by manual placement by staff, thereby ensuring the quality of the final product.

[0012] 3. The packaging bag conveying device in this scheme conveys packaging bags in a stacked form, and the stacked packaging bags are fed one by one to the conveying and bag opening device through the packaging bag loading device. Therefore, each time the packaging bag conveying device completes a conveying, the packaging bag loading device needs to complete a number of loading times consistent with the number of stacked packaging bags, and the subsequent processes also need to be repeated a corresponding number of times. During this process, the packaging bag conveying device suspends conveying, that is, the packaging bag conveying device is intermittent conveying. In this way, not only can the energy consumption of the packaging bag conveying device be reduced, but also the gap between the efficiency of manual hanging of packaging bags and the working efficiency of each device can be effectively eliminated, thereby solving the problem of mismatch between manual operation efficiency and device working sales volume, which is conducive to improving overall production efficiency.

[0013] 4. This solution uses a positioning rod to quickly position the packaging bag, and then uses two adjacent limit plates to accurately limit the packaging bag on both sides of the packaging bag, which can avoid relative displacement of the stacked packaging bags during subsequent transportation and limit the stacked packaging bags to an accurate position, which is beneficial to improving the processing accuracy of subsequent devices, thereby improving the quality of the final product.

[0014] 5. This scheme sets a protective cover at the feeding end of the packaging bag belt conveyor. In the process of the packaging bag loading device loading the packaging bags one by one onto the packaging bag belt conveyor, the packaging bags at the feeding end of the packaging bag belt conveyor can be prevented from being rolled into the packaging bag belt conveyor, thereby ensuring the smooth connection of subsequent processes; and a support plate is set at the discharging end of the packaging bag belt conveyor, so that the packaging bags transported to the discharging end of the packaging bag belt conveyor will be pushed onto the support plate to facilitate the bag opening mechanism to open the packaging bags.

[0015] 6. This solution sets a vacuum box inside the packaging bag belt conveyor, and forms a vacuum environment in the vacuum box through an external vacuum system. The adsorption holes on the top of the vacuum box are connected to the vacuum box, and a vacuum environment can also be formed in these adsorption holes. In this way, a single packaging bag conveyed on the packaging bag belt conveyor can be adsorbed and attached to the belt, avoiding positional displacement during the conveying process due to the weight of a single packaging bag being too light, thereby ensuring the processing accuracy of subsequent processes.

[0016] Preferably, as an improvement, the bag opening mechanism includes a bag opening drive component and an upper adsorption head and a lower adsorption head connected to the output end of the bag opening drive component, the upper adsorption head and the lower adsorption head are both connected to an external vacuum system, and the bag opening drive component drives the upper adsorption head and the lower adsorption head to move away from each other to open the packaging bag; the conveying bag opening device also includes a feeding motor component and a bag holding mechanism, the bag opening mechanism is connected to the output end of the feeding motor component, and the feeding motor component drives the bag opening mechanism to move between the packaging bag belt conveyor and the bag holding mechanism; the bag holding mechanism includes a bag holding motor and a bag holding turntable connected to the output end of the bag holding motor, and a plurality of bag holding claws are provided on the side of the bag holding turntable close to the bag opening mechanism.

[0017] Beneficial effects: The upper adsorption head and the lower adsorption head of the present solution are fixed to the upper side and the lower side of the packaging bag respectively by means of negative pressure adsorption. The bag opening drive assembly drives the upper adsorption head and the lower adsorption head to move away from each other, which can drive the upper side and the lower side of the packaging bag to move away from each other, thereby realizing the bag opening process of the packaging bag, with a simple structure and reliable operation. The present solution adds a feeding motor assembly and a bag holding mechanism, and drives the bag opening mechanism to approach the bag holding mechanism through the feeding motor assembly to realize the transfer of the packaging bag. The bag holding mechanism rotates the packaging bag and aligns it with the heat sealing device, which can realize the vertical installation of the bag opening mechanism and the heat sealing mechanism, thereby reducing the footprint of the entire system; and the bag holding mechanism is configured to include a plurality of bag holding claws, so that the bag holding mechanism can cooperate with the bag opening mechanism and the product pushing device at the same time, thereby omitting the time for the product pushing device to pause and wait for the bag holding mechanism to rotate, which is beneficial to improving the overall processing efficiency.

[0018] Preferably, as an improvement, the packaging bag feeding device includes a driving motor assembly and a feeding cylinder, the feeding cylinder is connected to the output end of the driving motor assembly, and the driving motor assembly drives the feeding cylinder to move between the packaging bag chain conveyor and the packaging bag belt conveyor; the output end of the moving cylinder is connected to a suction cup mounting frame, and a plurality of guide rods are vertically slidably connected to the mounting frame, a vacuum suction cup is provided at the bottom of the guide rod, the vacuum suction cup is connected to an external vacuum pumping system, and a spring is connected between the vacuum suction cup and the suction cup mounting frame; the adsorption force of the vacuum suction cup on the packaging bag is 24 to 38 KPa.

[0019] Beneficial effects: This scheme uses a guide rod to slide the vacuum suction cup onto the suction cup mounting frame, and connects a spring between the vacuum suction cup and the suction cup mounting frame. When the vacuum suction cup absorbs the packaging bag from the packaging bag chain conveyor, and when the vacuum suction cup places the absorbed packaging bag on the packaging bag belt conveyor, it can avoid hard contact between the vacuum suction cup and the packaging bag chain conveyor and the packaging bag belt conveyor, thereby avoiding damage to the system structure and helping to extend the service life of the system; in addition, the guide rod can not only realize the sliding connection between the vacuum suction cup and the suction cup mounting frame, but also limit the moving direction of the vacuum suction cup when the spring contracts, avoiding deflection of the vacuum suction cup, ensuring the accuracy of the vacuum suction cup adsorption position, thereby ensuring the position accuracy of the packaging bag transfer, and helping to improve the quality of the final product.

[0020] This solution sets the suction force of the vacuum suction cup on the packaging bag to 24-38KPa, which can ensure that the vacuum suction cup effectively adsorbs the topmost packaging bag stacked on the packaging bag conveying device, so as to continuously feed the packaging bags to the conveying and bag opening device, ensure the continuity of production, and avoid excessive suction force of the vacuum suction on the packaging bag, which may cause deformation of the packaging bag, especially the positioning hole of the packaging bag, which is conducive to ensuring the appearance quality of the final product. If the suction force of the vacuum suction cup on the packaging bag is too small, less than 24KPa, it is difficult to ensure that the vacuum suction cup effectively adsorbs the topmost packaging bag, affecting the continuity of sanitary napkin production and reducing the actual production efficiency; and if the suction force of the vacuum suction cup on the packaging bag is too large, greater than 38KPa, the vacuum suction cup is prone to deformation of the packaging bag, especially the positioning hole of the packaging bag, during the process of adsorbing and feeding the packaging bag, affecting the appearance quality of the final product and causing a bad sensory experience for consumers.

[0021] Preferably, as an improvement, the product loading device includes a product chain conveyor and a product conveying plate arranged above the product chain conveyor, a plurality of limit blocks are arranged on the product chain conveyor along the conveying direction, the distance between two adjacent limit blocks matches the width of the product, a conveying channel is opened on the product conveying plate in the conveying direction, and the limit blocks extend out of the product conveying plate through the conveying channel; a loading motor assembly is provided at the discharge end of the product chain conveyor, the output end of the loading motor assembly is connected with the loading plate, the loading plate is connected with the product conveying plate, and a make way channel is opened at the position of the loading plate corresponding to the conveying channel, the loading motor assembly drives the loading plate to move upward, and moves the product conveyed to the discharge end of the product chain conveyor to the output end of the product pushing device.

[0022] Beneficial effects: When using this solution, the products are stacked on the product conveying plate according to the number marked on the packaging bag, so that the products are located between two adjacent limit blocks, and the product chain conveyor drives the limit blocks to move, so that the limit blocks push the products until the products are pushed onto the loading plate, the product chain conveyor is temporarily closed, and the loading motor assembly drives the loading plate to move upward, thereby driving the products to move upward until the products are located at the output end of the product pushing device. This solution can realize continuous loading of products, so that the working efficiency of the product loading device matches the working efficiency of the product pushing device, thereby improving the overall production efficiency of sanitary napkins.

[0023] Preferably, as an improvement, the product pushing device includes a pushing motor assembly and a pushing rod connected to the output end of the pushing motor assembly, a pushing block is provided at one end of the pushing rod close to the bag holding mechanism; a pushing hole is provided at the position of the bag holding turntable corresponding to the bag holding claw, and the size of the pushing hole matches the size of the pushing block; the pushing motor assembly drives the pushing block to pass through the pushing hole at the corresponding position to push the product on the loading plate into the packaging bag.

[0024] Beneficial effects: When the present invention is in use, the push motor assembly drives the push rod to move toward the direction close to the bag-holding mechanism, thereby driving the push block to move toward the direction close to the bag-holding mechanism, so that the push block pushes the product through the push hole at the corresponding position, and pushes the product into the packaging bag on the bag-holding clamp at the corresponding position; the push motor assembly continues to drive the push rod to move in the opposite direction close to the heat-sealing device, thereby driving the push block to push the packaging bag and the product therein toward the direction close to the heat-sealing device, until the packaging bag and the product therein are located at the heat-sealing device. The present invention provides a push hole at the position of the bag-holding clamp corresponding to the bag-holding clamp of the bag-holding turntable, so that the push block can pass through the push hole and enter the packaging bag on the bag-holding clamp at the corresponding position, which can not only realize the bagging of the product, but also further realize the movement of the packaging bag and the product therein to the next process, which can effectively reduce the conveying structure, equipment cost and production area.

[0025] Preferably, as an improvement, the heat sealing device includes a heat sealing mechanism and a residual material cutting mechanism, the heat sealing mechanism includes a heat sealing drive assembly and an upper heat sealing roller and a lower heat sealing roller connected to the output end of the heat sealing drive assembly, the heat sealing drive assembly drives the upper heat sealing roller and the lower heat sealing roller to approach each other, clamps the packaging bag to achieve heat sealing of the packaging bag; the residual material cutting mechanism is located on the side of the heat sealing mechanism close to the bag supporting mechanism, the residual material cutting mechanism includes a cutting cylinder and an upper cutting knife connected to the output end of the cutting cylinder, and a fixed lower cutting knife is provided below the upper cutting knife.

[0026] Beneficial effects: The heat sealing mechanism of this scheme has a simple structure and can effectively realize the heat sealing of the rear end of the packaging bag; and a residual material cutting mechanism is provided to cut off the excess waste material at the rear end of the packaging bag after the heat sealing is completed to form a final product, which can ensure the appearance of the final product; compared with setting up a residual material cutting mechanism later, this scheme sets the heat sealing mechanism and the residual material cutting mechanism close to each other, which can improve the structural integration of the system and reduce the system's footprint.

[0027] Preferably, as an improvement, the heat sealing device also includes a waste collecting mechanism located on the side of the residual material cutting mechanism away from the heat sealing mechanism, the waste collecting mechanism includes a waste collecting plate, a waste conveying pipe and a waste collecting box, the height of the waste collecting plate matches the height of the lower cutting knife, a waste collecting port is opened on the waste collecting plate, one end of the waste conveying pipe is connected to the waste collecting port, the other end of the waste conveying pipe is connected to the waste collecting box, and the waste collection box is connected to an external vacuum system.

[0028] Beneficial effects: This solution sets a waste collection mechanism on the side of the residual material cutting mechanism away from the heat sealing mechanism, which can collect the residual material cut off from the packaging bag by the residual material cutting mechanism, avoiding the residual material of the packaging bag from falling into the working environment at will, which is beneficial to keeping the system working environment clean and reducing cleaning costs. It can also avoid the residual material of the packaging bag from falling to other structures and interfering with the work of other structures.

[0029] Preferably, as an improvement, the bottom of the upper heat-sealing roller and the top of the lower heat-sealing roller are both provided with isolation belts, and the upper heat-sealing roller and the lower heat-sealing roller are provided with heat insulation plates on the side close to the product conveying device.

[0030] Beneficial effects: This solution sets an isolation belt at the bottom of the upper heat-sealing roller and the top of the lower heat-sealing roller, which can prevent the packaging bag from directly contacting the upper heat-sealing roller and the lower heat-sealing roller, thereby preventing the packaging bag from sticking to the upper heat-sealing roller and / or the lower heat-sealing roller after heating, and preventing the packaging bag from being pulled up and down by the upper heat-sealing roller and the lower heat-sealing roller when the upper heat-sealing roller and the lower heat-sealing roller are separated from each other after heat-sealing, which is beneficial to ensure the appearance of the final product. In addition, this solution sets a heat insulation plate on the side of the upper heat-sealing roller and the lower heat-sealing roller close to the product conveying device. In the process of heat-sealing the packaging bag, the heat emitted by the upper heat-sealing roller and the lower heat-sealing roller can be reduced or even prevented from being transferred to the side of the packaging bag containing the product, thereby preventing the side of the packaging bag containing the product from being deformed by heat, which is beneficial to further ensure the appearance of the final product.

[0031] Preferably, as an improvement, the driving motor assembly includes a driving motor, a driving active gear and a driving driven gear, the driving active gear is connected to the output shaft of the driving motor, and a driving toothed belt is tensioned between the driving active gear and the driving driven gear; the feeding motor assembly, the loading motor assembly and the pushing motor assembly have the same structure as the driving motor assembly.

[0032] Beneficial effect: This solution drives the toothed belt to rotate by driving the active gear and the driven gear to achieve the movement of the vacuum suction cup, thereby realizing the transfer of the packaging bag. Compared with ordinary pulleys and belts, the cooperation of gears and toothed belts can avoid slipping and improve the accuracy of displacement, thereby improving the accuracy of processing.

[0033] Preferably, as an improvement, the top end of the positioning rod is conical, and the side of the limiting plate away from the packaging bag belt conveyor is rounded to form a fan-shaped limiting plate.

[0034] Beneficial effect: This solution sets the top of the positioning rod to be conical. When the packaging bag is hung on the positioning rod, the top of the cone can play a certain guiding role in the hanging of the packaging bag, thereby improving the convenience of operation. When the front end of the packaging bag of the sanitary napkin product is provided with a tie, this solution sets the structure of the limit plate. In the process of the packaging bag feeding device adsorbing and transferring the packaging bag to the conveying and opening bag device, it can prevent the tie at the front end of the packaging bag from being hung on the corner of the limit plate away from the packaging bag belt conveyor, causing the packaging bag to be pulled and deformed, which is conducive to ensuring the appearance of the final product. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a top view of the overall structure of Example 1 of the utility model.

[0036] Figure 2 for Figure 1 Front view of the belt conveyor area for the middle packaging bag.

[0037] Figure 3 It is a schematic diagram of the structure of the packaging bag conveying device in Example 1 of the utility model.

[0038] Figure 4 It is a schematic structural diagram of the packaging bag feeding device in Example 1 of the utility model.

[0039] Figure 5 It is a top view of the packaging bag belt conveyor in Example 1 of the utility model.

[0040] Figure 6 It is a structural schematic diagram of the bag opening mechanism and the feeding motor assembly in Example 1 of the utility model.

[0041] Figure 7 This is a schematic structural diagram of the bag-supporting mechanism in Example 1 of the utility model.

[0042] Figure 8 This is a schematic diagram of the structure of the product feeding device in Example 1 of the utility model (excluding the feeding motor assembly).

[0043] Fig. 9 This is a schematic diagram of the structure of the product pushing device and the feeding motor assembly in Example 1 of the utility model.

[0044] Fig.10 This is a schematic diagram of the structure of the heat sealing mechanism in Example 1 of the utility model.

[0045] Fig.11 This is a schematic diagram of the structure of the upper heat sealing roller and the lower heat sealing roller in Example 1 of the utility model.

[0046] Fig.12 This is a schematic structural diagram of the excess material cutting mechanism in Example 1 of the utility model.

[0047] Fig.13 This is a schematic diagram of the structure of the waste collection mechanism in Example 1 of the utility model. DETAILED DESCRIPTION

[0048] The following is further described in detail through specific implementation methods:

[0049] The reference numerals in the drawings of the specification include: packaging bag conveying device 1, packaging bag chain conveyor 11, mounting pad 12, positioning rod 13, limiting plate 14, packaging bag feeding device 2, driving motor 21, driving toothed belt 22, feeding slide rail 23, feeding mounting frame 24, feeding cylinder 25, suction cup mounting frame 26, guide rod 27, spring 28, vacuum suction cup 29, conveying and opening bag device 3, packaging bag belt conveyor 31, protective cover 311, support plate 312, adsorption hole 313, bag opening mechanism 32, bag opening drive assembly 321, upper adsorption head 322, lower adsorption head 323, feeding motor assembly 33, feeding motor 331, feeding toothed belt 332, feeding slide rail 34, bag holding mechanism 35, bag holding motor 351, bag holding turntable 352, bag holding clamp 353, product feeding device 4 , product chain conveyor 41, product conveying plate 42, limit block 43, loading plate 44, loading motor 45, loading toothed belt 46, product pushing device 5, pushing motor 51, pushing toothed belt 52, pushing plate 53, pushing rod 54, pushing block 55, pushing slide rail 56, heat sealing device 6, heat sealing slide rail 611, upper mounting plate 612, upper connecting rod 613, lower mounting plate 614, lower connecting rod 615, heat sealing rotating shaft 616, heat sealing rotating block 617, residual material cutting mechanism 62, cutting cylinder 621, upper cutting knife 622, lower cutting knife 623, waste collecting mechanism 63, waste collecting plate 631, waste collecting port 632, waste conveying pipe 633, waste collecting box 634, upper heat sealing roller 641, lower heat sealing roller 642, insulation plate 65, isolation belt 66, product conveying device 7.

[0050] Example 1

[0051] Sanitary napkin production system, as attached Figure 1 and Figure 2 As shown, it includes a packaging bag conveying device 1, a packaging bag loading device 2 and a conveying and opening bag device 3 connected in sequence, and a product loading device 4, a product pushing device 5, a heat sealing device 6 and a product conveying device 7 connected in sequence. The conveying direction of the packaging bag conveying device 1 is perpendicular to the conveying direction of the conveying and opening bag device 3, the heat sealing device 6 and the product conveying device 7 are located below the conveying and opening bag device 3, and the conveying direction of the product conveying device 7 is parallel to the conveying direction of the conveying and opening bag device 3.

[0052] like Figure 3As shown, the packaging bag conveying device 1 includes a packaging bag chain conveyor 11, on which a plurality of mounting blocks 12 are fixedly connected along the conveying direction by screws, and a plurality of positioning rods 13 and a limiting plate 14 are provided on the mounting blocks 12 along the conveying direction; specifically, a plurality of threaded holes are opened on the top of the mounting blocks 12, and the plurality of threaded holes are distributed in two rows along the conveying direction, the bottom of the positioning rod 13 is threadedly connected to a row of threaded holes close to the conveying bag opening device 3, and the limiting plate 14 is threadedly connected to a row of threaded holes away from the conveying bag opening device 3 by bolts.

[0053] The positioning rods 13 and the limiting plates 14 are arranged alternately. In this embodiment, two limiting plates 14 and the positioning rod 13 therebetween form a limiting group. In each limiting group, the positioning rod 13 is located in the middle of the two limiting plates 14, and the distance between the two limiting plates 14 matches the width of the packaging bag. When the size of the processed sanitary napkin changes, the size of its packaging bag will also change accordingly. At this time, the distance between the two limiting plates 14 in the limiting group can be adjusted to match the new packaging bag size.

[0054] The top end of the positioning rod 13 is conical, and the side of the limiting plate 14 away from the packaging bag belt conveyor 31 is rounded to form a fan-shaped limiting plate 14 .

[0055] like Figure 4 As shown, the packaging bag feeding device 2 includes a feeding slide rail 23, a feeding mounting frame 24 and a driving motor 21 assembly. The feeding slide rail 23 is horizontally arranged, and the feeding mounting frame 24 is slidably connected to the feeding slide rail 23, and the feeding mounting frame 24 is connected to the output end of the driving motor 21 assembly. The driving motor 21 assembly drives the feeding mounting frame 24 to move between the packaging bag chain conveyor 11 and the conveying and opening bag device 3. The driving motor 21 assembly includes a driving motor 21, a driving driving gear and a driving driven gear. The driving driving gear is coaxially fixedly connected to the output shaft of the driving motor 21 by bolts. A driving toothed belt 22 is tensioned between the driving driving gear and the driving driven gear, and the driving toothed belt 22 is meshed with the driving driving gear and the driving driven gear. The feeding mounting frame 24 is fixedly connected to the driving toothed belt 22.

[0056] The feeding mounting frame 24 is fixedly connected with a feeding cylinder 25 by bolts, and the piston rod of the feeding cylinder 25 is set downward. The piston rod of the feeding cylinder 25 is fixedly connected with a suction cup mounting frame 26, and the suction cup mounting frame 26 is vertically slidably connected to the feeding mounting frame 24. A plurality of guide rods 27 are vertically slidably connected to the suction cup mounting frame 26, and a vacuum suction cup 29 is fixedly connected to the bottom of the guide rod 27. The vacuum suction cup 29 is connected to the external vacuum pumping system, and a spring 28 is connected between the vacuum suction cup 29 and the suction cup mounting frame 26. Specifically, the spring 28 is sleeved on the guide rod 27, the top of the spring 28 is fixedly connected to the suction cup mounting frame 26, and the bottom of the spring 28 is fixedly connected to the vacuum suction cup 29. The adsorption force of the vacuum suction cup 29 on the packaging bag is 24 to 38 KPa, and specifically, it can be 24 KPa, 28 KPa, 32 KPa, 36 KPa, 38 KPa, etc.

[0057] like Figure 1 As shown, the bag-opening device 3 includes a bag-conveying belt conveyor 31, a bag-opening mechanism 32 and a bag-supporting mechanism 35 connected in sequence, and also includes a feeding motor assembly 33 and a feeding slide rail 34. Figure 6 As shown, the feeding slide rail 34 is horizontally arranged, the bag opening mechanism 32 is slidably connected to the feeding slide rail 34, and the bag opening mechanism 32 is connected to the output end of the feeding motor assembly 33. The feeding motor assembly 33 drives the bag opening mechanism 32 to move between the packaging bag belt conveyor 31 and the bag holding mechanism 35.

[0058] like Figure 5 As shown, the feeding end of the packaging bag belt conveyor 31 is fixedly connected to a protective cover 311, and the protective cover 311 covers the feeding end of the packaging bag belt conveyor 31; the discharging end of the packaging bag belt conveyor 31 is fixedly connected to a support plate 312, and the support plate 312 is connected to the discharging end of the packaging bag belt conveyor 31. A vacuum box (not shown in the figure) is arranged inside the packaging bag belt conveyor 31, and the vacuum box is connected to an external vacuum pumping system, the top of the vacuum box is open, and the top of the vacuum box is in contact with the belt of the packaging bag belt conveyor 31, and a plurality of adsorption holes 313 are opened on the belt of the packaging bag belt conveyor 31, and the adsorption holes 313 located above the vacuum box are connected to the vacuum box.

[0059] like Figure 6 As shown, the feeding motor assembly 33 includes a feeding motor 331, a feeding driving gear and a feeding driven gear. The feeding driving gear is coaxially fixedly connected to the output shaft of the feeding motor 331. A feeding toothed belt 332 is tensioned between the feeding driving gear and the feeding driven gear. The bag opening mechanism 32 is fixedly connected to the feeding toothed belt 332.

[0060] The bag opening mechanism 32 includes a bag opening drive component 321 and an upper adsorption head 322 and a lower adsorption head 323 connected to the output end of the bag opening drive component 321. The upper adsorption head 322 has an air hole at the bottom, and the lower adsorption head 323 has an air hole at the top. The air holes of the upper adsorption head 322 and the lower adsorption head 323 are both connected to the external vacuum system. The bag opening drive component 321 drives the upper adsorption head 322 and the lower adsorption head 323 to move away from each other to open the packaging bag. Specifically, the bag opening drive component 321 includes a bag opening mounting plate and a bag opening cylinder fixedly connected to the bag opening mounting plate, and the bag opening mounting plate is fixedly connected to the feeding toothed belt 332; the piston rod of the bag opening cylinder is horizontally arranged, and two connecting rod structures are fixedly connected to the piston rod of the bag opening cylinder, and the two connecting rod structures are symmetrical up and down along the axis of the piston rod of the bag opening cylinder; the upper adsorption head 322 is fixedly connected to the end of the connecting rod structure located at the top, and the lower adsorption head 323 is fixedly connected to the end of the connecting rod structure located at the bottom.

[0061] like Figure 7 As shown, the bag-holding mechanism 35 includes a bag-holding motor 351 and a bag-holding turntable 352 coaxially fixedly connected to the output shaft of the bag-holding motor 351. A plurality of bag-holding clamping claws 353 are connected to the side of the bag-holding turntable 352 close to the bag-opening mechanism 32. The bag-holding turntable 352 has a through-pushing hole at the position corresponding to the bag-holding clamping claws 353. In this embodiment, the number of the bag-holding clamping claws 353 is four, and the four bag-holding clamping claws 353 are evenly distributed along the circumference of the bag-holding turntable 352.

[0062] like Figure 8 As shown, the product loading device 4 includes a product chain conveyor 41 and a product conveying plate 42 located above the product chain conveyor 41. A plurality of stop blocks 43 are fixedly connected to the chain on the product chain conveyor 41 along the conveying direction, and the distance between two adjacent stop blocks 43 matches the size of the product. A conveying channel penetrating the product conveying plate 42 is opened on the product conveying plate 42 along the conveying direction, and the top of the stop block 43 extends out of the product conveying plate 42 through the conveying channel. The stop block 43 pushes the product on the product conveying plate 42 for conveying until the stop block 43 pushes the product on the product conveying plate 42 onto the loading plate 44.

[0063] The discharge end of the product chain conveyor 41 is provided with Fig. 9 The loading motor 45 assembly shown in the figure has a loading plate 44 connected to its output end, which is horizontally connected to the product conveying plate 42, and a make way channel penetrating the loading plate 44 is opened at the position of the conveying channel corresponding to the loading plate 44. The loading motor 45 assembly drives the loading plate 44 to move upward, and moves the product conveyed to the discharge end of the product chain conveyor 41 to the output end of the product pushing device 5.

[0064] The feeding motor 45 assembly includes a feeding motor 45, a feeding driving gear and a feeding driven gear. The feeding driving gear is coaxially fixedly connected to the output shaft of the feeding motor 45, and a feeding toothed belt 46 is tensioned between the feeding driving gear and the feeding driven gear. The feeding toothed belt 46 is meshed with the feeding driving gear and the feeding driven gear.

[0065] like Fig. 9 As shown, the product pushing device 5 includes a pushing slide rail 56, a pushing motor 51 assembly and a pushing plate 53 connected to the output end of the pushing motor 51 assembly, the pushing slide rail 56 is horizontally arranged, and the pushing plate 53 is slidably connected to the pushing slide rail 56. The pushing motor 51 assembly includes a pushing motor 51, a pushing driving gear and a pushing driven gear, the pushing driving gear is coaxially fixedly connected to the output shaft of the pushing motor 51, and a pushing toothed belt 52 is tensioned between the pushing driving gear and the pushing driven gear, and the pushing toothed belt 52 is meshed with the pushing driving gear and the pushing driven gear.

[0066] A pushing rod 54 is fixedly connected to the top of the pushing plate 53, and a pushing block 55 is fixedly connected to one end of the pushing rod 54 close to the bag holding mechanism 35. The size of the pushing block 55 matches the size of the pushing hole on the bag holding turntable 352; the pushing motor 51 assembly drives the pushing block 55 to pass through the pushing hole at the corresponding position, and pushes the product on the loading plate 44 into the packaging bag on the bag holding clamp 353 at the corresponding position.

[0067] Combination Fig.10 , Fig.11 , Fig.12 and Fig.13 As shown, the heat sealing device 6 includes a heat sealing mechanism, a residual material cutting mechanism 62 and a waste material collecting mechanism 63. The heat sealing mechanism includes a heat sealing drive assembly and a heat sealing slide rail 611. The heat sealing slide rail 611 is vertically arranged. The output end of the heat sealing drive assembly is connected to an upper heat sealing roller 641 and a lower heat sealing roller 642. The upper heat sealing roller 641 and the lower heat sealing roller 642 are both slidably connected to the heat sealing slide rail 611. The heat sealing drive assembly drives the upper heat sealing roller 641 and the lower heat sealing roller 642 to approach each other, clamp the packaging bag to achieve heat sealing of the packaging bag.

[0068] Specifically, Fig.10As shown, the heat sealing drive assembly includes a heat sealing motor, a heat sealing shaft 616, a heat sealing rotating block 617, an upper heat sealing frame and a lower hot air frame. The output shaft of the heat sealing motor is arranged horizontally, and the heat sealing shaft 616 is coaxially fixedly connected to the output shaft of the heat sealing motor. There are two heat sealing rotating blocks 617, which are fixedly connected to the heat sealing shaft 616 at the middle position, and the heat sealing rotating blocks 617 are arranged horizontally. The upper heat sealing frame includes an upper mounting plate 612 vertically slidably connected to the heat sealing slide rail 611, the upper mounting plate 612 is arranged horizontally, and the length of the upper mounting plate 612 matches the distance between the two heat sealing rotating blocks 617; the upper connecting rods 613 are rotatably connected at both ends of the upper mounting plate 612, and the end of the upper connecting rod 613 away from the upper mounting plate 612 is rotatably connected to the heat sealing rotating block 617 at the corresponding position. The lower heat sealing frame includes a lower mounting plate 614 vertically slidably connected to the heat sealing slide rail 611, the lower mounting plate 614 is parallel to the upper mounting plate 612, and the length of the lower mounting plate 612 matches; the lower connecting rods 615 are rotatably connected at both ends of the lower mounting plate 614, and one end of the lower connecting rod 615 away from the lower mounting plate 614 is rotatably connected to the heat sealing rotating block 617 at the corresponding position. The upper connecting rod 613 and the lower connecting rod 615 are rotatably connected to the two ends of the heat sealing rotating block 617 respectively.

[0069] like Fig.11 As shown, the upper heat sealing roller 641 is fixedly connected to the bottom of the upper mounting plate 612, and the lower heat sealing roller 642 is fixedly connected to the top of the lower mounting plate 614. The bottom of the upper heat sealing roller 641 and the top of the lower heat sealing roller 642 are both pasted and fixed with an isolation belt 66, which covers the bottom of the upper heat sealing roller 641 and the top of the lower heat sealing roller 642, and the isolation belt 66 is made of heat-resistant cloth. The upper heat sealing roller 641 and the lower heat sealing roller 642 are provided with a heat insulation plate 65 on one side close to the product conveying device 7, and the heat insulation plate 65 is fixedly connected to the upper mounting plate 612 and the lower mounting plate 614 respectively.

[0070] The excess material cutting mechanism 62 is located on the side of the heat sealing mechanism away from the product conveying device 7. Fig.12 As shown, the residual material cutting mechanism 62 includes a cutting cylinder 621 and an upper cutting knife 622 connected to the output end of the cutting cylinder 621. The cutting cylinder 621 is vertically fixedly connected to the side of the upper mounting plate 612 away from the product conveying device 7. A fixed lower cutting knife 623 is provided below the upper cutting knife 622.

[0071] like Fig.13As shown, the waste collection mechanism 63 includes a waste collection plate 631, a waste conveying pipe 633 and a waste collection box 634. The waste collection plate 631 is fixed to the side of the residual material cutting mechanism 62 away from the heat sealing mechanism, and the height of the waste collection plate 631 matches the height of the lower cutting knife 623. A waste collection port 632 is formed on the waste collection plate 631, one end of the waste conveying pipe 633 is connected to the waste collection port 632, and the other end of the waste conveying pipe 633 is connected to the waste collection box 634, and the waste collection box 634 is connected to an external vacuum system.

[0072] The product conveying device 7 includes a product belt conveyor, such as Figure 2 As shown, the product belt conveyor is located directly below the packaging bag belt conveyor 31.

[0073] The sanitary napkin production process is completed based on the above-mentioned sanitary napkin production system, and includes the following steps:

[0074] S1. Packaging bag stacking and conveying: the staff stacks a certain number of packaging bags (for example, 50) and hangs them on the same positioning rod 13 through the positioning holes at the rear end of the packaging bags. At this time, the packaging bags are limited by the limiting plates 14 on both sides of the positioning rod 13; the packaging bag chain conveyor 11 conveys the stacked packaging bags a fixed distance (the distance between the two positioning groups) toward the packaging bag feeding device 2, and the staff stacks and places the packaging bags at the next positioning group.

[0075] S2. Loading the packaging bags one by one: When the stacked packaging bags are conveyed to the bottom of the packaging bag loading device 2, the loading cylinder 25 drives the suction cup mounting frame 26 to move downward until the vacuum suction cup 29 is attached to the uppermost packaging bag, and the external vacuum system vacuums the vacuum suction cup 29 to adsorb the uppermost packaging bag; the loading cylinder 25 drives the suction cup mounting frame 26 to move upward and reset, and the driving motor 21 is started to drive the driving driving wheel to rotate, thereby driving the driving toothed belt 22 to rotate, and then driving the loading mounting frame 24 to move closer to the packaging bag. The suction cup mounting frame 26 moves in the direction of the bag belt conveyor 31 until the packaging bag is located above the feeding port of the packaging bag belt conveyor 31; the feeding cylinder 25 drives the suction cup mounting frame 26 to move downward until the packaging bag is in contact with the belt of the packaging bag belt conveyor 31, and the external vacuum system stops vacuuming the vacuum suction cup 29, and the vacuum suction cup 29 no longer adsorbs the packaging bag; the feeding cylinder 25 drives the suction cup mounting frame 26 to move upward and reset, and the driving motor 21 assembly drives the feeding mounting frame 24 to move in the direction away from the packaging bag belt conveyor 31 and reset.

[0076] S3-1. The packaging bags are transported one by one: the external vacuum system evacuates the vacuum box, and the adsorption holes 313 adsorb the packaging bags and stick them to the belt of the packaging bag belt conveyor 31. The packaging bag belt conveyor 31 transports the packaging bags toward the bag opening mechanism 32 for a fixed distance, so that the distances between the locked packaging bags on the packaging bag belt conveyor 31 are equal.

[0077] S3-2, opening the packaging bag: the packaging bag is conveyed to the support plate 312 by the packaging bag belt conveyor 31. At this time, the packaging bag is located between the upper adsorption head 322 and the lower adsorption head 323. The external vacuum system vacuums the upper adsorption head 322 and the lower adsorption head 323. The upper adsorption head 322 adsorbs the upper side of the packaging bag, and the lower adsorption head 323 adsorbs the lower side of the packaging bag. Then, the bag opening drive component 321 drives the upper adsorption head 322 and the lower adsorption head 323 away from each other to open the packaging bag.

[0078] S3-3, bag stretching: the feeding motor 331 drives the feeding active wheel to rotate, and drives the feeding toothed belt 332 to rotate, thereby driving the bag opening mechanism 32 to move towards the direction close to the bag stretching mechanism 35; the opening of the packaging bag is aligned with the bag stretching jaw 353 located at the top on the bag stretching turntable 352, and is finally sleeved on the bag stretching jaw 353, and the bag stretching jaw 353 continues to stretch the bag opening of the packaging bag; the bag stretching motor 351 drives the bag stretching turntable 352 to rotate, so that the packaging bag rotates to the bottom.

[0079] S4. Product loading: Products are stacked on the product conveying plate 42 in the quantity marked on the packaging bags and are located between two adjacent limit blocks 43. The product chain conveyor 41 drives the limit block 43 to move toward the loading plate 44, so that the limit block 43 pushes the product from the product conveying plate 42 to the loading plate 44; the loading motor 45 drives the loading active wheel to rotate, driving the loading toothed belt 46 to rotate, thereby driving the loading plate 44 to move upward until the top of the loading plate 44 is flush with the bottom of the pushing block 55. At this time, the product on the loading plate 44 is relative to the position of the pushing block 55.

[0080] S5. Product pushing: the pushing motor 51 drives the pushing active gear to rotate, driving the pushing toothed belt 52 to rotate, thereby driving the pushing plate 53, the pushing rod 54 and the pushing block 55 to move in the direction close to the bag supporting mechanism 35, so that the pushing block 55 contacts the product on the loading plate 44, and pushes the product on the loading plate 44 to the packaging bag at the corresponding position through the pushing hole; the pushing motor 51 assembly continues to drive the pushing block 55 to move in the direction close to the heat sealing device 6, and the packaging bag together with the product therein is pushed between the upper heat sealing roller 641 and the lower heat sealing roller 642. At this time, the front end of the packaging bag with the product is supported on the feed end of the product belt conveyor, and the rear end of the packaging bag without the product is supported on the waste collection plate 631, and the pushing motor 51 assembly drives the pushing block 55 to reset.

[0081] S6-1. Heat sealing of packaging bag: The heat sealing motor drives the heat sealing shaft 616 to rotate, driving the heat sealing rotary block 617 to rotate around the axis of the heat sealing shaft 616, thereby driving the upper mounting plate 612 to move downward along the heat sealing slide rail 611 through the upper connecting rod 613, and at the same time driving the lower mounting plate 614 to move upward along the heat sealing slide rail 611 through the lower connecting rod 615, so that the upper heat sealing roller 641 and the lower heat sealing roller 642 are close to each other and clamp the packaging bag therebetween, thereby realizing heat sealing of the packaging bag at the rear end; then the heat sealing motor drives the heat sealing shaft 616 to rotate in the opposite direction, so that the upper heat sealing roller 641 and the lower heat sealing roller 642 are reset.

[0082] S6-2, cutting off the remaining material of the packaging bag: the cutting cylinder 621 drives the upper cutting knife 622 to move downward, and the upper cutting knife 622 cooperates with the lower cutting knife 623 to cut off the remaining material at the rear end of the packaging bag. The cut remaining material is located on the waste collecting plate 631.

[0083] S6-3. Packaging bag waste collection: The external vacuum system evacuates the waste collection box 634, so that the remaining materials on the waste collection plate 631 are collected into the waste collection box 634 through the waste collection port 632 and the waste conveying pipe 633.

[0084] S7, product conveying: After the remaining material at the rear end of the packaging bag is cut off, the final product is formed. At this time, the product belt conveyor starts to convey the final product to the subsequent packaging and boxing process.

[0085] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the technical solution of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A sanitary napkin production system, characterized in that: It includes a packaging bag conveying device, a packaging bag loading device and a conveying and opening bag device connected in sequence, as well as a product loading device, a product pushing device, a heat sealing device and a product conveying device connected in sequence; the packaging bag conveying device includes a packaging bag chain conveyor, a plurality of mounting pads are provided on the packaging bag chain conveyor along the conveying direction, a plurality of positioning rods and limit plates are provided on the mounting pads along the conveying direction, the positioning rods and the limit plates are alternately arranged, and the distance between two adjacent limit plates matches the width of the packaging bag; the conveying and opening bag device includes a packaging bag belt conveyor and a bag opening mechanism connected in sequence, a protective cover is provided at the feeding end of the packaging bag belt conveyor, a support plate is provided at the discharging end of the packaging bag belt conveyor, a vacuum box is provided in the packaging bag belt conveyor, the vacuum box is connected to an external vacuum pumping system, the top of the vacuum box is open and the top of the vacuum box is in contact with the belt of the packaging bag belt conveyor, and a plurality of adsorption holes are provided on the belt of the packaging bag belt conveyor.

2. The sanitary napkin production system according to claim 1, characterized in that: The bag opening mechanism includes a bag opening drive component and an upper adsorption head and a lower adsorption head connected to the output end of the bag opening drive component, the upper adsorption head and the lower adsorption head are both connected to an external vacuum system, and the bag opening drive component drives the upper adsorption head and the lower adsorption head to move away from each other to open the packaging bag; the conveying and opening bag device also includes a feeding motor component and a bag holding mechanism, the bag opening mechanism is connected to the output end of the feeding motor component, and the feeding motor component drives the bag opening mechanism to move between the packaging bag belt conveyor and the bag holding mechanism; the bag holding mechanism includes a bag holding motor and a bag holding turntable connected to the output end of the bag holding motor, and a plurality of bag holding claws are provided on the side of the bag holding turntable close to the bag opening mechanism.

3. The sanitary napkin production system according to claim 2, characterized in that: The packaging bag feeding device includes a driving motor assembly and a feeding cylinder, the feeding cylinder is connected to the output end of the driving motor assembly, and the driving motor assembly drives the feeding cylinder to move between the packaging bag chain conveyor and the packaging bag belt conveyor; the output end of the moving cylinder is connected to a suction cup mounting frame, and a plurality of guide rods are vertically slidably connected to the mounting frame, a vacuum suction cup is provided at the bottom of the guide rod, the vacuum suction cup is connected to an external vacuum pumping system, and a spring is connected between the vacuum suction cup and the suction cup mounting frame; the adsorption force of the vacuum suction cup on the packaging bag is 24 to 38 KPa.

4. The sanitary napkin production system according to claim 3, characterized in that: The product loading device includes a product chain conveyor and a product conveying plate arranged above the product chain conveyor. A plurality of limit blocks are arranged on the product chain conveyor along the conveying direction. The distance between two adjacent limit blocks matches the width of the product. A conveying channel is opened on the product conveying plate in the conveying direction. The limit blocks extend out of the product conveying plate through the conveying channel. A loading motor assembly is provided at the discharge end of the product chain conveyor. The output end of the loading motor assembly is connected with a loading plate. The loading plate is connected with the product conveying plate, and a yield channel is opened at the position of the loading plate corresponding to the conveying channel. The loading motor assembly drives the loading plate to move upward, and moves the product conveyed to the discharge end of the product chain conveyor to the output end of the product pushing device.

5. The sanitary napkin production system according to claim 4, characterized in that: The product pushing device includes a pushing motor assembly and a pushing rod connected to the output end of the pushing motor assembly, and a pushing block is provided at one end of the pushing rod close to the bag-holding mechanism; a pushing hole is provided at a position of the bag-holding turntable corresponding to the bag-holding clamping claw, and the size of the pushing hole matches the size of the pushing block; the pushing motor assembly drives the pushing block to pass through the pushing hole at the corresponding position to push the product on the loading plate into the packaging bag.

6. The sanitary napkin production system according to claim 5, characterized in that: The heat sealing device comprises a heat sealing mechanism and a residual material cutting mechanism. The heat sealing mechanism comprises a heat sealing drive assembly and an upper heat sealing roller and a lower heat sealing roller connected to the output end of the heat sealing drive assembly. The heat sealing drive assembly drives the upper heat sealing roller and the lower heat sealing roller to approach each other to clamp the packaging bag to achieve heat sealing of the packaging bag. The residual material cutting mechanism is located on a side of the heat sealing mechanism close to the bag supporting mechanism. The residual material cutting mechanism comprises a cutting cylinder and an upper cutting knife connected to the output end of the cutting cylinder. A fixed lower cutting knife is provided below the upper cutting knife.

7. The sanitary napkin production system according to claim 6, characterized in that: The heat sealing device also includes a waste collecting mechanism located on the side of the residual material cutting mechanism away from the heat sealing mechanism, the waste collecting mechanism includes a waste collecting plate, a waste conveying pipe and a waste collecting box, the height of the waste collecting plate matches the height of the lower cutting knife, a waste collecting port is opened on the waste collecting plate, one end of the waste conveying pipe is connected to the waste collecting port, the other end of the waste conveying pipe is connected to the waste collecting box, and the waste collecting box is connected to an external vacuum system.

8. The sanitary napkin production system according to claim 6, characterized in that: The bottom of the upper heat-sealing roller and the top of the lower heat-sealing roller are both provided with isolation belts, and the upper heat-sealing roller and the lower heat-sealing roller are provided with heat insulation plates on one side close to the product conveying device.

9. The sanitary napkin production system according to claim 5, characterized in that: The driving motor assembly comprises a driving motor, a driving driving gear and a driving driven gear, wherein the driving driving gear is connected to the output shaft of the driving motor, and a driving toothed belt is tensionedly connected between the driving driving gear and the driving driven gear; The feeding motor assembly, the loading motor assembly and the pushing motor assembly have the same structure as the driving motor assembly.

10. The sanitary napkin production system according to any one of claims 1 to 9, characterized in that: The top of the positioning rod is conical, and the side of the limiting plate away from the packaging bag belt conveyor is rounded to form a fan-shaped limiting plate; a plurality of threaded holes are opened on the top of the mounting pad, and the positioning rod and the limiting plate are detachably connected at the threaded holes by bolts.

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