Traditional Chinese medicine protection pad medicine core feeding and coating production line

Abstract

The traditional Chinese medicine protection pad medicine core feeding and coating production line is characterized in that a coating layer distributing frame is arranged on one side of a coating layer receiving wheel, a powder discharging device is arranged above the coating layer receiving wheel, and a medicine core coating frame is arranged below the end, away from the coating layer receiving wheel, of the coating layer distributing frame; a turnover pressing wheel, a turnover device and a shaping pressing wheel are sequentially arranged above the flux core coating frame in the direction away from the coating layer distributing frame, and the coating layer receiving wheel, the coating layer distributing frame, the powder discharging device, the flux core coating frame, the turnover pressing wheel and the shaping pressing wheel are connected to the end face of the same side of the vertical base plate. According to the structure, according to the traditional Chinese medicine protection pad medicine core feeding and coating production line, traditional Chinese medicine powder is continuously laid on the coating layer to form the medicine powder layer, then the core strip is laid, the two sides of the coating layer are coated, the medicine core of the traditional Chinese medicine protection pad is formed, and automatic continuous production of the medicine core of the traditional Chinese medicine protection pad is achieved.

Description

Technical Field

[0001] This invention relates to the technical field of a traditional Chinese medicine pad production equipment, specifically to a traditional Chinese medicine pad core feeding and coating production line. Background Technology

[0002] Small and convenient panty liners are very popular among women. They are generally long and narrow, and women use them during exercise. The panty liner is attached to the underwear to prevent vaginal discharge from staining it. Some panty liners now contain traditional Chinese medicine powders with specific formulas. These powders have pharmacological effects that can not only prevent bacterial growth but also treat certain conditions, thus protecting women's vaginal health. Additionally, panty liners specifically formulated for men with prostate problems are now available on the market, also containing traditional Chinese medicine powders with formulas addressing prostate issues.

[0003] When producing these types of panty liners, the prepared herbal powder needs to be evenly applied to the surface of the corresponding layer of the panty liner, and the thickness of the powder application also has certain requirements. However, current panty liner production lines on the market do not require the addition of herbal powder to the panty liner, nor do they need to consider how the powder will come into contact with the user, so there is no dedicated production equipment. Currently, traditional panty liner production lines are only suitable for the production of ordinary panty liners. Therefore, this step currently relies on production operators to manually distribute the powder evenly, add the core strip, and cover the panty liner. Obviously, the production efficiency of this method is far lower than that of traditional panty liner assembly line production. In addition, with manual operation, the stability of the amount and evenness of powder distribution cannot be guaranteed, which will lead to poor consistency in the effect of the produced panty liner. Furthermore, because the production of these products requires high hygiene standards, manual operation requires personnel to take breaks and use the restroom during work, resulting in a hygienic disinfection process every time they enter the corresponding production environment, leading to very high additional production costs.

[0004] The applicant's previously developed herbal sanitary pad core structure involves encapsulating a powder layer of Chinese herbal medicine within a covering layer to form the core, which is then fixed inside the pad. Furthermore, considering the sustained-release effect of the herbal medicine powder and the reduction of irritation, a loosely porous and soft core strip is filled as a spacer on the user-facing side of the powder layer within the covering layer. Clearly, existing sanitary pad production lines are unsuitable for the mass production of sanitary pads with this permeable core.

[0005] Furthermore, since the core contains traditional Chinese medicine powder, there is no suitable equipment on the market for this function. The applicant can only refer to the powder feeding device described in application number 202520241037.7. However, this device only ensures a stable amount of powder fed per unit time, but it still cannot solve the problem of evenly spreading the stable amount of powder fed per unit time onto the protective mat it passes through. In addition, the existing technology also addresses the problem that "powder is prone to quality changes due to prolonged retention, and the changed powder mixes in during discharge, affecting the hygiene and safety of use." However, it only solves the powder retention problem at the screw connection structure, without addressing the powder retention problem caused by the container structure itself, or proposing a technical solution to solve the powder retention problem within the container structure itself.

[0006] Furthermore, there is currently no equipment available to reference for how to encapsulate the powder and core strip to form a core, and how to achieve continuous automated production at high speed to match the production speed of subsequent traditional panty liners. Summary of the Invention

[0007] The purpose of this invention is to overcome the shortcomings of the prior art and provide a production line for feeding and coating the core of a traditional Chinese medicine pad. The production line of this application can automatically and continuously apply the powder of traditional Chinese medicine to the middle of the coating layer to form a powder layer. Then, a core strip is applied on top of the powder layer. After the coating layer is folded over from both sides, the powder layer and the core strip are wrapped together to form the core of the traditional Chinese medicine pad. This achieves efficient, automated and continuous production of the core of the traditional Chinese medicine pad.

[0008] The technical solution adopted in this invention is: The Chinese herbal medicine pad core feeding and coating production line includes a coating layer receiving wheel, a coating layer fabrication frame on one side of the receiving wheel, a powder dispensing device above the receiving wheel on the side away from the fabrication frame, and a core coating frame below the fabrication frame on the side away from the receiving wheel. Above the core coating frame, along the direction away from the fabrication frame, are sequentially arranged a folding pressure roller, a folding device, and a shaping pressure roller. The powder from the powder dispensing device is dispensed into the middle of the coating layer, which is conveyed by a receiving conveyor belt wrapped around the receiving wheel, forming a coating layer connection. The powder layer is arranged in parallel directions. The receiving conveyor belt transports the coating layer with the powder layer in the middle of the top surface to the coating layer fabric rack. The top of the powder layer of the coating layer is covered with a core strip. After being folded by the bottom of the folding pressure roller, it is transported by the coating conveyor belt set in the core coating frame. It is then transported in sequence through the folding device and the shaping pressure roller. The coating conveyor belt located at the top of the core coating frame and the receiving conveyor belt located at the top of the coating layer fabric rack transport at the same speed and in the same direction. The coating receiving roller, the coating layer fabric rack, the powder dropping device, the core coating frame, the folding pressure roller, and the shaping pressure roller are respectively connected to the same end face of the vertical base plate.

[0009] A further improvement of the present invention is that a transmission wheel A is rotatably connected to the end of the covering layer fabric frame away from the covering layer receiving wheel. The receiving conveyor belt is respectively wound around the covering layer receiving wheel and the transmission wheel A. The receiving conveyor belt wound around the top of the covering layer receiving wheel moves towards the top of the transmission wheel A and is wound around the transmission wheel A. The receiving conveyor belt wound around the bottom of the transmission wheel A moves towards the bottom of the covering layer receiving wheel and is wound around the covering layer receiving wheel. The covering layer receiving wheel is the drive wheel for the receiving conveyor belt. A transmission wheel B is also provided on the opposite side of the covering layer receiving wheel and the covering layer fabric frame, below the covering layer fabric frame. The receiving conveyor belt is wound around the top of the transmission wheel B. The transmission wheel B is the tension wheel of the receiving conveyor belt.

[0010] A further improvement of the present invention is that the powder feeding device includes a powder storage hopper, the top plate of which is connected to a powder feeding hopper, and an auger rotatably connected to the shaft center of the powder storage hopper. The lower end of the auger extends into the bottom of the powder storage hopper and connects to a discharge pipe. The auger includes a central shaft and spiral blades fixed to the central shaft. The spiral blades are in contact with the inner wall of the discharge pipe. The top end of the central shaft is driven by a drive motor A fixed to the top plate. A central shaft sleeve is rotatably connected to the central shaft above the spiral blades. Multiple scraper strips that contact the inner wall of the powder storage hopper are evenly distributed on the side wall of the central shaft sleeve. The central shaft sleeve is driven by a drive motor B fixed to the top plate through a transmission device. The bottom end of the discharge pipe is connected to the powder feeding pipe through a connecting pipe. A vibrator is fixedly installed on the outer wall of the powder feeding pipe.

[0011] A further improvement of the present invention is that the auger is located at the conical bucket-shaped part in the lower part of the powder storage hopper, and a transmission shaft A is coaxially fixed to the top of the central shaft of the auger. The top of the transmission shaft A extends upward out of the top plate and is driven and connected to the drive shaft A of the drive motor A. The central shaft sleeve is rotatably connected to the transmission shaft A. The scraper is located at the cylindrical part in the upper part of the powder storage hopper, and a transmission wheel B is coaxially fixed to the outer wall of the part of the central shaft sleeve extending upward out of the top plate. The transmission wheel B is coaxially connected to the transmission shaft B driven by the drive shaft B of the drive motor B. The connection between the top end of the central shaft and the bottom end of the transmission shaft A is located inside the central shaft sleeve. The bottom end of the central shaft sleeve is located above the helical blade. The bottom end of the inner wall of the central shaft sleeve is also detachably and coaxially fixed with a sealing ring. The inner diameter of the sealing ring is larger than the outer diameter of the central shaft, and the inner wall of the sealing ring is coaxially provided with a sealing rubber ring.

[0012] A further improvement of the present invention is that the powder discharge pipe includes a connecting pipe fixedly connected to the connecting pipe at the top and a gradient pipe sealed to the connecting pipe at the bottom. The top of the gradient pipe is a round pipe opening that matches the connecting pipe, and the bottom of the gradient pipe is a strip-shaped pipe opening with an inner wall width smaller than the powder discharge width. The gradient pipe is inclined. Vibrators are respectively provided on the outer side of the connecting pipe wall and the outer side of the lower pipe wall of the gradient pipe. The plane A where the vibrator and the axis of the connecting pipe are located is perpendicular to the plane B where the vibrator and the axis of the gradient pipe are located. The strip-shaped opening of the gradient tube is detachably fitted with a sleeve. The inner wall width of the sleeve matches the powder discharge width. The bottom edges of the sleeve corresponding to the two side walls of the gradient tube and the bottom edge corresponding to the lower side wall of the gradient tube respectively contact the pad to which the powder is to be discharged. The gap between the bottom edge of the sleeve corresponding to the upper side wall and the pad to which the powder is to be discharged matches the thickness of the Chinese medicine powder layer formed by the discharge of the powder.

[0013] A further improvement of the present invention is that the folding pressure roller is located within the range of the coating conveyor belt driven at the top of the drug core coating frame, and the two sides of the rim of the folding pressure roller that contact the core strip are flush with the side edge of the core strip. A wheel brush is also provided above the folding pressure roller, and the wheel brush contacts the rim of the folding pressure roller when it rotates to the top position and the part of the end face of the two wheels near the rim.

[0014] A further improvement of the present invention is that the folding device includes a folding pressure plate A and a folding pressure plate B fixedly connected to the top of the drug core coating frame and arranged opposite to each other on both sides of the coating conveyor belt. A shaping pressure plate is also provided on the side of the top of the drug core coating frame where the folding pressure plate B is located, along the conveying direction of the coating conveyor belt and located behind the folding pressure plate B. Both the folding pressure plate A and the folding pressure plate B are arranged parallel to the conveying direction of the coating conveyor belt. The shaping pressure plate is located along the conveying direction of the coating conveyor belt, formed by the folding pressure plate A. The side where B is located is inclined towards the side where the folding pressure plate A is located; along the conveying direction of the covering conveyor belt, the end of the folding pressure plate A is located between the end of the folding pressure plate B and the beginning of the shaping pressure plate, and there is a gap between the folding pressure plate A and the folding pressure plate B. The end of the shaping pressure plate facing the side where the folding pressure plate A is located is located on the side of the covering conveyor belt close to the side where the folding pressure plate A is located. The bottom surface of the folding pressure plate A, the top surface of the folding pressure plate B, and the bottom surface of the shaping pressure plate are all flush with the top surface of the core strip conveyed by the covering conveyor belt.

[0015] A further improvement of the present invention is that the starting ends of the opposing sidewalls of the folding pressure plate A and the folding pressure plate B are inclined in opposite directions along the conveying direction of the covering conveyor belt. The bevel is an arc surface A and an arc surface B that are smoothly connected to the opposing sidewalls of the folding pressure plate A and the folding pressure plate B; along the conveying direction of the covering conveyor belt, the end of the arc surface B is located behind the end of the arc surface A. The end of the shaping plate facing the side wall of the conveyor belt is provided with an outlet bevel, which is an arc surface C that is smoothly connected to the side wall of the shaping plate facing the side wall of the conveyor belt.

[0016] A further improvement of the present invention is that the shaping pressure roller includes shaping pressure roller A and shaping pressure roller B arranged sequentially along the conveying direction of the covering conveyor belt, the shaping pressure roller A is located at the end position of the folding device, and the shaping pressure roller B is located at the end position of the drug core covering frame; The diameter of the shaping roller A is smaller than the diameter of the shaping roller B, and the height of the bottom edge of the shaping roller A is greater than or equal to the height of the bottom edge of the shaping roller B.

[0017] A further improvement of the present invention is that the top and bottom of the drug core coating frame facing the coating layer fabric frame are respectively provided with a transmission roller A and a transmission roller D, and the top and bottom of the drug core coating frame facing away from the coating layer fabric frame are respectively provided with a transmission roller B and a transmission roller C, and the bottom of the drug core coating frame is also provided with a drive roller and a tension roller, and the coating conveyor belt is sequentially connected to the transmission roller A, transmission roller B, transmission roller C, drive roller, tension roller and transmission roller D for transmission.

[0018] The beneficial effects of this invention are as follows: First, the Chinese herbal medicine pad core feeding and coating production line of this application can automatically and continuously apply Chinese herbal medicine powder to the middle of the coating layer to form a powder layer, then apply a core strip on top of the powder layer, and then wrap the powder layer and the core strip by folding the two sides of the coating layer to form the core of the Chinese herbal medicine pad, thereby realizing the efficient, automated and continuous production of the Chinese herbal medicine pad core.

[0019] Secondly, the Chinese medicine pad core feeding and coating production line of this application uses an auger to stably and evenly convey the Chinese medicine powder in the powder storage hopper downward to the powder discharge pipe for discharge. The action of the vibrator installed in the powder discharge pipe makes the Chinese medicine powder that falls on the pad at the corresponding position of the powder discharge pipe loose and even. In addition, the scraper can ensure that no Chinese medicine powder remains on the inner wall of the powder storage hopper located above the auger.

[0020] Third, the Chinese medicine pad core feeding and coating production line of this application, through the connection between the central bushing and the drive shaft A, and the connection between the central bushing and the drive shaft B, allows the auger and the scraper to rotate independently without mutual interference.

[0021] Fourth, the Chinese medicine pad core feeding and coating production line of this application has the connection between the central shaft and the drive shaft A located inside the central shaft sleeve. The bottom end of the central shaft sleeve is located above the spiral blade. The bottom end of the inner wall of the central shaft sleeve can also be detachably fixed with a sealing ring. The inner wall of the sealing ring is coaxially provided with a sealing rubber ring, thereby avoiding the residue of Chinese medicine powder at the connection between the auger and the drive shaft A and the connection between the central shaft sleeve and the central shaft.

[0022] Fifth, the Chinese medicine pad core feeding and coating production line of this application uses an annular flange provided in the powder storage hopper, which includes a top plate, a cylindrical part, a connecting ring, and a conical hopper part. The top plate, cylindrical part, and connecting ring are detachably fixed to the annular flange by multiple axial connecting rods evenly distributed on the outside of the cylindrical part, so that the powder storage hopper can be easily disassembled, thereby facilitating regular cleaning of the inner wall of the powder storage hopper and preventing residual powder from being stuck in certain local positions inside the powder storage hopper.

[0023] Sixth, the Chinese medicine pad core feeding and coating production line of this application has brush bristles on the contact side of the scraper and the cylindrical part, corresponding to the position where the bottom of the cylindrical part connects with the connecting ring, so that the scraper can further brush away the medicine powder remaining in the corresponding gap in the powder storage hopper, thus extending the cycle of regularly cleaning the powder storage hopper.

[0024] Seventh, the Chinese medicine pad core feeding and coating production line of this application, through the connecting cylinder extending downward to contact the inner wall of the conical bucket-shaped part by the connecting ring inner wall, further facilitates the important medicinal powder in the powder storage hopper to approach the auger, not only ensuring the conveying effect of the auger, but also preventing the powder in the powder storage hopper from escaping from the connection between the connecting ring and the annular flange.

[0025] Eighth, the Chinese medicine pad core feeding and coating production line of this application, through the inclined scraper, facilitates the scraping of the Chinese medicine powder remaining on the inner wall of the powder storage hopper, while forcibly and quickly dropping the powder into the lower part of the powder storage hopper, further avoiding the residue of medicine powder in the powder storage hopper and further ensuring the effective feeding of Chinese medicine powder.

[0026] Ninth, the Chinese medicine pad core feeding and coating production line of this application connects the powder discharge pipe to the powder storage hopper through the connecting pipe. This not only reduces the vibration impact of the vibrator on the powder storage hopper, but also allows the powder to enter from the smallest diameter of the discharge pipe to the larger inner diameter of the connecting pipe, and finally into the powder discharge pipe with an even larger inner diameter. This facilitates the uniform dispersion of the Chinese medicine powder after it is discharged from the discharge pipe, ensuring that the Chinese medicine powder is evenly and loosely distributed when it falls onto the pad surface.

[0027] Tenth, the Chinese herbal medicine pad core feeding and coating production line of this application includes a powder feeding pipe comprising an upper connecting pipe and a lower gradient pipe. The bottom of the gradient pipe is a strip-shaped opening with an inner wall width smaller than the powder feeding width, and the gradient pipe is inclined. Vibrators are respectively provided on the outer side of the connecting pipe wall and the outer side of the lower pipe wall of the gradient pipe. The plane A where the vibrator and the axis of the connecting pipe are located is perpendicular to the plane B where the vibrator and the axis of the gradient pipe are located. This not only further ensures the uniform and loose distribution of the Chinese herbal medicine powder when it is discharged from the strip-shaped opening of the gradient pipe, but also prevents the Chinese herbal medicine powder from remaining on the inner wall of the connecting pipe through the vibrator. The vibrator in the gradient pipe not only prevents the Chinese herbal medicine powder from remaining on the inner wall of the gradient pipe, but also ensures that the Chinese herbal medicine powder discharged from the strip-shaped opening of the gradient pipe is evenly dispersed and falls stably.

[0028] Eleventh, in the Chinese herbal medicine pad core feeding and coating production line of this application, the strip-shaped opening of the gradient tube is detachably fitted and fixed with a sleeve, which not only ensures the dropping position and dropping width of the Chinese herbal medicine powder to the corresponding position of the pad, but also ensures the thickness of the Chinese herbal medicine powder layer at the corresponding position of the pad.

[0029] Twelfth, the Chinese medicine pad core feeding and coating production line of this application, through the action of the flexible annular sealing pad A, further prevents the Chinese medicine powder in the powder storage hopper from escaping outward and reduces the vibration impact of the vibrator.

[0030] Thirteenth, the Chinese herbal pad core feeding and coating production line of this application, through the setting of the coating layer cloth frame, enables the powder layer falling onto the top surface of the coating layer to be conveyed more stably, avoiding the powder layer from scattering due to slight vibration during the conveying process, which would prevent the core strip from covering the powder layer, thus causing the powder to pollute the equipment and surrounding environment in subsequent production processes, as well as wasting the powder and reducing the amount of medicine in the produced core, thereby affecting the product effect.

[0031] Fourteenth, the Chinese medicine pad core feeding and coating production line of this application, through the action of the folding pressure roller, can not only make the core strip cover the powder layer and make the powder evenly enter the gaps in the internal structure of the core strip; but also make the coating layer form folded parts corresponding to both sides of the core strip, so that the folded parts of the coating layer can subsequently coat the powder layer and the core strip.

[0032] Fifteenth, the Chinese medicine pad core feeding and coating production line of this application can remove some residual powder of medicine near the rim or end face of the folding pressure roller through the action of the roller brush, so as to avoid the residual powder of the folding pressure roller affecting the core strip that comes into contact with it later.

[0033] Sixteenth, the Chinese medicine pad core feeding and coating production line of this application, through the structure of the roller brush, can remove the residual powder of the medicine powder on the folding and pressing roller in time, and avoid the powder from accumulating on the brush bristles or wiping layer, which will affect the effect of the roller brush after being left for a long time.

[0034] Seventeenth, the Chinese medicine pad core feeding and coating production line of this application improves the strength of the brush bristles by using the inverted "U"-shaped baffle set on the wheel brush. This avoids the excessively large angle between the contact surface of the brush bristles and the folding pressure roller after the wheel brush is tilted, which would result in the side wall of the brush bristles contacting the folding pressure roller alone, and the brush bristles having too little recovery force, thus affecting the brush bristles' ability to remove powder.

[0035] Eighteenth, the Chinese medicine pad core feeding and coating production line of this application, through the inclined setting of the roller brush, not only relatively increases the contact surface between the brush bristles and the folding pressure roller, thus allowing the brush bristles to contact the folding pressure roller for a longer time; in addition, it also allows the wiping layer to contact the folding pressure roller, thereby further improving the brush brush's effect on removing residual powder from the folding pressure roller.

[0036] Nineteenth, the Chinese herbal pad core feeding and coating production line of this application, through the setting of the wiping layer, can effectively remove the stubborn powder residue on the rim surface of the folding pressure roller due to pressure.

[0037] Twentieth, the Chinese medicine pad core feeding and coating production line of this application, through the folding pressure plate A and folding pressure plate B set in the core coating frame, allows the two folded parts formed by the folding pressure roller before the coating layer can continue to fold and fold successively to cover the top surface of the core strip, thereby realizing the coating of the core strip and the powder layer to form the core.

[0038] 21. The Chinese medicine pad core feeding and wrapping production line of this application, through the shaping pressure plate set on the side where the folding pressure plate B is located, can improve the folding effect of the folding part that is subsequently covered on the core strip, and avoid the edge of the folding part that is subsequently covered on the core strip from curling up and affecting subsequent production.

[0039] 22. The Chinese medicine pad core feeding and coating production line of this application, through the action of shaping pressure roller A and shaping pressure roller B, not only makes the fold at the folding part deeper and the state after folding more stable, but also presses the core strip against the powder layer again, so that more powder in the powder layer can enter the loose pores of the core strip's internal structure.

[0040] Twenty-third, in the Chinese medicine pad core feeding and coating production line of this application, the diameter of the shaping pressure roller B is larger than that of the shaping pressure roller A, and the height of the bottom edge of the shaping pressure roller A is greater than or equal to the height of the bottom edge of the shaping pressure roller B. This makes the shaping pressure roller B exert a greater downward squeezing effect on the core strip and the squeezing contact distance with the core strip longer, thereby further achieving the effect of the medicine powder in the powder layer filling the core strip as fully and evenly as possible.

[0041] Twenty-fourth, the Chinese medicine pad core feeding and coating production line of this application places the shaping pressure roller A close to the back of the shaping pressure plate, so that the core that has just been pressed and limited by the shaping pressure plate can be directly pressed by the shaping pressure roller A, further consolidating the coating effect of the core, and pressing the core strip into the powder layer as soon as possible while ensuring the coating effect, so that more powder in the powder layer can enter the loose pores of the core strip's internal structure.

[0042] Twenty-fifth, the Chinese medicine pad core feeding and coating production line of this application sets the shaping pressure roller B at the end of the core coating frame, so that the core strip and coating layer after passing through the shaping pressure roller A have enough time to recover to the normal state, and when passing through the shaping pressure roller B again, the coating effect of the core layer can be further consolidated. Under the premise of ensuring the coating effect, the core strip is pressed against the powder layer again, so that more powder in the powder layer can enter the loose pores of the core strip's internal structure, allowing the core to enter the subsequent production process as soon as possible. Attached Figure Description

[0043] Figure 1 This is a front view diagram of this application.

[0044] Figure 2 This is an enlarged front sectional view of the powder feeding device of this application.

[0045] Figure 3 This is a top-view enlarged schematic diagram of the drug core coating frame of this application.

[0046] Figure 4 This is an enlarged schematic diagram of the end face of the brush facing the direction of rotation of the folding pressure roller in this application.

[0047] Figure 5 This is an enlarged cross-sectional view of the brush in this application at the center elevation of the folding pressure roller.

[0048] Figure 6 This is an enlarged schematic diagram of the end face of the brush facing away from the rotation direction of the folding pressure roller in this application. Detailed Implementation

[0049] Combination Figures 1-6 It is known that the Chinese medicine pad core feeding and coating production line includes a coating layer receiving wheel 1. A coating layer fabric frame 2 is also provided on one side of the coating layer receiving wheel 1. A powder discharging device 5 is provided above the coating layer receiving wheel 1 on the side away from the coating layer fabric frame 2. A core coating frame 7 is also provided at the end of the coating layer fabric frame 2 away from the coating layer receiving wheel 1. A folding pressure roller 10, a folding device, and a shaping pressure roller are sequentially arranged above the core coating frame 7 along the direction away from the coating layer fabric frame 2. The powder in the powder discharging device 5 is discharged to the middle of the coating layer 16, which is conveyed by the receiving conveyor belt 3 wrapped around the coating layer receiving wheel 1, forming a shape parallel to the conveying direction of the coating layer 16. The powder layer 17 is set up. The receiving conveyor belt 3 conveys the coating layer 16 with the powder layer 17 on the top surface to the coating layer fabric rack 2. After the powder layer 17 of the coating layer 16 is covered with the core strip 18, it is pressed and folded at the bottom by the folding pressure roller 10 and then conveyed by the coating conveyor belt 8 set on the core coating rack 7. It is then conveyed sequentially through the folding device and the shaping pressure roller. The coating conveyor belt 8 located at the top of the core coating rack 7 and the receiving conveyor belt 3 located at the top of the coating layer fabric rack 2 convey at the same speed and in the same direction. The coating receiving roller 1, the coating layer fabric rack 2, the powder dropping device 5, the core coating rack 7, the folding pressure roller 10, and the shaping pressure roller are respectively connected to the same side end face of the vertical substrate.

[0050] The end of the covering layer fabric frame 2 away from the covering layer receiving wheel 1 is rotatably connected to a transmission wheel A21. The receiving conveyor belt 3 is respectively connected to the covering layer receiving wheel 1 and the transmission wheel A21. The receiving conveyor belt 3, which is placed around the top of the covering layer receiving wheel 1, moves towards the top of the transmission wheel A21 and around the transmission wheel A21. The receiving conveyor belt 3, which is placed around the bottom of the transmission wheel A21, moves towards the bottom of the covering layer receiving wheel 1 and around the covering layer receiving wheel 1. The covering layer receiving wheel 1 is the drive wheel for the receiving conveyor belt 3.

[0051] On the opposite side of the covering layer receiving wheel 1 and the covering layer fabric frame 2, a transmission wheel B22 is also provided below the covering layer fabric frame 2. The receiving conveyor belt 3 is connected to the top of the transmission wheel B22, and the transmission wheel B22 is the tension wheel of the receiving conveyor belt 3.

[0052] The top surface of the receiving conveyor belt 3, located between the receiving wheel 1 of the coating layer and the drive wheel A21, is horizontal.

[0053] The bottom surface of the receiving conveyor belt 3, located between the receiving wheel 1 and the drive wheel A21, is in contact with the top surface of the covering layer fabric rack 2.

[0054] The coating layer 16 is conveyed by the coating layer feeding conveyor wheel 4 to contact and be synchronously conveyed to the receiving conveyor belt 3 that is wrapped around the coating layer receiving wheel 1. The core strip 18 is conveyed by the core strip feeding conveyor wheel 6 to contact and be synchronously conveyed to the top of the powder layer 17 on the top surface of the coating layer 16 located near the transmission wheel A21 at the top of the coating layer fabric frame 2.

[0055] The powder feeding device 5 includes a powder storage hopper 500. A powder feeding hopper 501 is connected to the top plate 512 of the powder storage hopper 500. An auger 502 is coaxially rotatably connected to the shaft center of the powder storage hopper 500. The lower end of the auger 502 extends into the bottom of the powder storage hopper 500 and connects to a discharge pipe 508. The auger 502 includes a central shaft 506 and spiral blades fixed to the central shaft 506. The spiral blades are in contact with the inner wall of the discharge pipe 508. The top end of the central shaft 506 is fixed to the top plate 512. The drive motor A503 is connected to the drive shaft 506. The central shaft 506 is located on the upper part of the spiral blade and is coaxially and rotatably connected to the central shaft sleeve 507. The side wall of the central shaft sleeve 507 is evenly distributed with a plurality of scraper blades 504 that contact the inner wall of the powder storage hopper 500. The central shaft sleeve 507 is connected to the drive motor B505 fixed to the top plate 512 through a transmission device. The bottom end of the discharge pipe 508 is connected to the powder discharge pipe 510 through a connecting pipe 509. The outer side wall of the powder discharge pipe 510 is fixedly provided with a vibrator 511.

[0056] The auger 502 is located at the conical bucket-shaped part 519 in the lower part of the powder storage hopper 500. The top end of the central shaft 506 of the auger 502 is coaxially fixed with a drive shaft A517. The top end of the drive shaft A517 extends upward from the top plate 512 and is driven and connected to the drive shaft A of the drive motor A503. The central shaft sleeve 507 is rotatably connected to the drive shaft A517. The scraper 504 is located at the cylindrical part 520 in the upper part of the powder storage hopper 500. The outer wall of the part of the central shaft sleeve 507 extending upward from the top plate 512 is coaxially fixed with a drive wheel B514. The drive wheel B514 is coaxially fixed with the drive shaft B518 driven by the drive shaft B of the drive motor B505 and is connected to the drive wheel A513.

[0057] The drive wheel A513 and drive wheel B514 are connected by a drive belt 515.

[0058] The top surface of the top plate 512 is detachably and fixedly connected to the transmission box 516. The drive motor A503 and drive motor B505 are respectively fixedly connected to the top of the transmission box 516. The transmission wheel A513, the transmission wheel B514, the transmission belt 515, the portion of the transmission shaft A517 extending out of the top plate, the portion of the central shaft sleeve 507 extending out of the top plate 512, and the transmission shaft B518 are all located inside the transmission box 516.

[0059] The connection between the top end of the central shaft 506 and the bottom end of the transmission shaft A517 is located inside the central shaft sleeve 507. The bottom end of the central shaft sleeve 507 is located above the helical blade. The bottom end of the inner wall of the central shaft sleeve 507 is also detachably and coaxially fixed with a sealing ring 529. The inner diameter of the sealing ring 529 is larger than the outer diameter of the central shaft 506, and the inner wall of the sealing ring 529 is coaxially provided with a sealing rubber ring.

[0060] The top end of the central shaft 506 is threaded to the bottom end of the transmission shaft A517, and the outer wall of the sealing ring 529 is threaded to the bottom of the inner wall of the central shaft sleeve 507.

[0061] The top end of the central bushing 507 is rotatably connected to the transmission shaft A517, and the bottom end of the central bushing 507 is rotatably connected to the central shaft 506 via bearings; the top and top plate 512 of the transmission box 516 are rotatably connected to the central bushing 507 and the transmission shaft B518 via bearings, respectively.

[0062] The powder storage hopper 500 also includes a connecting ring 521. The top of the conical hopper-shaped part 519 is coaxially provided with an annular flange 522 that matches the connecting ring 521. The diameter of the top plate 512, the outer diameter of the connecting ring 521, and the outer diameter of the annular flange 522 are all larger than the outer diameter of the cylindrical part 520. The top plate 512, the cylindrical part 520, and the connecting ring 521 are all detachably fixedly connected to the annular flange 522 by axial connecting rods 523. Multiple axial connecting rods 523 are provided and are evenly and coaxially distributed on the outside of the cylindrical part 520.

[0063] The inner diameter of the connecting ring 521 is equal to the inner diameter of the cylindrical part 519. The bottom end of the scraper 504 is located below the connection between the bottom end of the cylindrical part 520 and the connecting ring 521. Furthermore, bristles 527 are provided on the contact side of the scraper 504 and the cylindrical part 520, corresponding to the position where the bottom end of the cylindrical part 520 connects with the connecting ring 521.

[0064] The inner wall of the connecting ring 521 extends downward to form a connecting cylinder 525. The inner diameter of the connecting cylinder 525 is equal to the inner diameter of the cylindrical part 519. The bottom end of the connecting cylinder 525 extends downward to contact the inner wall of the conical part 519.

[0065] The cylindrical part 520 is made of transparent plexiglass.

[0066] The connecting rod 523 has an enlarged head at its top end and a screw at its bottom end, the major diameter of which is smaller than the diameter of the connecting rod 523. The top plate 512 has a matching through hole A corresponding to the position of the connecting rod 523. The connecting ring 521 and the annular flange 522 have matching through holes B and C corresponding to the screw. After the bottom end of the connecting rod 523 passes downward through the through hole A of the top plate 512, the bottom end of the screw of the connecting rod 523 passes downward through the through hole B of the connecting ring 521 and the through hole C of the annular flange 522 in sequence, and is locked and fixed by a nut 524.

[0067] The bottom of the top plate 512 is provided with an annular positioning groove A corresponding to the top end of the cylindrical part 520, and the inner edge of the top of the connecting ring 521 is provided with an annular positioning groove B corresponding to the bottom end of the cylindrical part 520.

[0068] The annular positioning groove A and the annular positioning groove B are respectively provided with matching flexible annular sealing gaskets B, and the cylindrical part 520 is connected to the annular positioning groove A and the annular positioning groove B through the flexible annular sealing gaskets B respectively.

[0069] A flexible annular sealing gasket A526 is provided between the connecting ring 521 and the connecting cylinder 525, the annular flange 522, and the conical bucket-shaped part 519.

[0070] The top and bottom ends of the scraper 504 are fixedly connected to the central bushing 507 via radial rods 528. The scraper 504 is inclined, and along the rotation direction of the central bushing 507, the top end of the scraper 504 is located in front of the bottom end of the scraper 504.

[0071] The top opening of the connecting pipe 509 is fixed to the bottom opening of the discharge pipe 508 by a tightening bolt 530, and the top opening of the powder discharge pipe 510 is fixed to the bottom opening of the connecting pipe 509 by a connecting bolt 533. Multiple tightening bolts 530 and connecting bolts 533 are provided and evenly distributed around the axis of the connecting pipe 509. The connecting pipe 509 is provided with matching threaded through holes and threaded blind holes corresponding to the tightening bolts 530 and connecting bolts 533, respectively, and the powder discharge pipe 510 is provided with matching through holes D corresponding to the connecting bolts 533.

[0072] The inner wall of the connecting pipe 509 has an annular notch at the top that matches the outer wall of the discharge pipe 508. The bottom edge of the outer wall of the discharge pipe 508 has a positioning protrusion 531 extending outward. The bottom of the inner wall of the annular notch has an annular positioning groove C532 that matches the positioning protrusion 531.

[0073] The powder discharge pipe 510 includes a connecting pipe 535 fixedly connected to the connecting pipe 509 at the top and a gradient pipe 536 sealed to the connecting pipe 535 at the bottom. The top of the gradient pipe 536 is a round pipe opening that matches the connecting pipe 535, and the bottom of the gradient pipe 536 is a strip-shaped pipe opening with an inner wall width smaller than the powder discharge width. The gradient pipe 536 is inclined. Vibrators 511 are respectively provided on the outer side of the pipe wall of the connecting pipe 535 and the outer side of the lower pipe wall of the gradient pipe 536. The plane A where the vibrator 511 and the axis of the connecting pipe 535 are located is perpendicular to the plane B where the vibrator 511 and the axis of the gradient pipe 536 are located.

[0074] Multiple vibrators 511 are provided on the outer side of the lower tube wall of the tapered tube 536 from top to bottom along the extension direction of the tapered tube 536.

[0075] The strip-shaped opening of the gradient tube 536 is detachably fitted with a sleeve 537. The inner wall width of the sleeve 537 matches the powder discharge width. The bottom edges of the sleeve 537 corresponding to the two side walls of the gradient tube 536 and the bottom edge of the lower side wall of the gradient tube 536 respectively contact the pad to which the powder is to be discharged. The gap between the bottom edge of the upper side wall of the sleeve 537 and the pad to which the powder is to be discharged matches the thickness of the Chinese medicine powder layer formed by the discharge of the powder.

[0076] The bottom edge of the sleeve 537 corresponding to the two side walls of the tapered tube 536 is an arc-shaped structure 538.

[0077] The arc-shaped structure 538 is coaxially arranged with the coating layer receiving wheel 1.

[0078] The folding pressure roller 10 is located within the range of the coating conveyor belt 8 driven at the top of the core coating frame 7, and the two sides of the rim of the folding pressure roller 10 that contact the core strip 18 are flush with the side edge of the core strip 18 respectively. A wheel brush 28 is also provided above the folding pressure roller 10, and the wheel brush 28 contacts the rim of the folding pressure roller 10 when it rotates to the top position and the part of the end face of the two wheels near the rim.

[0079] The wheel brush 28 includes an inverted "U"-shaped frame 35. The top and sides of the through-wheel groove 36 at the bottom of the inverted "U"-shaped frame 35 are evenly provided with top bristles 40 and side bristles 43, respectively. The height of the free end of the bottom of the top bristles 40 is lower than the height of the rim of the folding pressure roller 10 corresponding to the position inside the inverted "U"-shaped frame 35. The spacing between the side bristles 43 on both sides inside the through-wheel groove 36 is less than the axial thickness of the folding pressure roller 10.

[0080] The groove wall edge of the through wheel slot 36 is provided with a matching inverted "U" shaped baffle 38 on the side away from the folding pressure roller 10. The top bristles 40 and the side bristles 43 are located on the side of the inverted "U" shaped baffle 38 facing the folding pressure roller 10. The top bottom surface of the inverted "U" shaped baffle 38 is higher than the free end of the bottom of the top bristles 40. The side of the inverted "U" shaped baffle 38 is located in the middle of the side bristles 43 on the same side.

[0081] The top bristles 40 are fixedly connected to the connecting groove A37 provided at the top of the through wheel groove 36 via the bristle plate A39. The side bristles 43 are fixedly connected to the connecting groove B41 provided on the side wall of the through wheel groove 36 via the bristle plate B42. The end face of the bristle plate B42 connecting the side bristles 43 is flush with the side wall of the through wheel groove 36. The top end of the bristle plate B42 is flush with the free end of the bottom of the top bristles 40. The bottom end of the bristle plate B42 is flush with the bottom opening of the through wheel groove 36. The two ends of the bristle plate A37 are flush with the side wall of the through wheel groove 36.

[0082] Negative pressure through holes are evenly distributed on the end face of the brush plate A37 connected to the top brush 40 and the end face of the brush plate B42 connected to the side brush 43. The negative pressure through holes are connected to the negative pressure device through the negative pressure pipe provided by the inverted "U" shaped frame 35.

[0083] The end face of the brush plate A37 connected to the top brush 40 is also fixedly provided with a wiping layer 44, and the bottom free ends of the top brush 40 fixed to the brush plate A37 pass downward through the wiping layer 44 respectively.

[0084] The bottom surface of the wiping layer 44 is higher than the top surface of the through-wheel groove 36.

[0085] The wheel brush 28 is located on the top of the folding pressure roller 10, near the side of the covering layer fabric frame 2.

[0086] The wheel brush 28 is inclined radially toward the side facing the rotation direction of the folding pressure roller 10 at the contact position between the wheel brush 28 and the folding pressure roller 10.

[0087] The wiping layer 44 is made of sponge or cloth.

[0088] The folding device includes a folding pressure plate A11 and a folding pressure plate B12 fixedly connected to the top of the drug core coating frame 7 and arranged opposite each other on both sides of the coating conveyor belt 8. A shaping pressure plate 13 is also provided on the side of the folding pressure plate B12 at the top of the drug core coating frame 7, along the conveying direction of the coating conveyor belt 8, behind the folding pressure plate B12. Both the folding pressure plate A11 and the folding pressure plate B12 are arranged parallel to the conveying direction of the coating conveyor belt 8. The shaping pressure plate 13 is arranged along the conveying direction of the coating conveyor belt 8, from the side of the folding pressure plate B12 towards the folding pressure plate. The side where A11 is located is inclined; along the conveying direction of the covering conveyor belt 8, the end of the folding pressure plate A11 is located between the end of the folding pressure plate B12 and the beginning of the shaping pressure plate 13. There is a gap between the folding pressure plate A11 and the folding pressure plate B12. The end of the shaping pressure plate 13 facing the side where the folding pressure plate A11 is located is located on the side of the covering conveyor belt 8 close to the side where the folding pressure plate A11 is located. The bottom surface of the folding pressure plate A11, the top surface of the folding pressure plate B12 and the bottom surface of the shaping pressure plate 13 are all flush with the top surface of the core strip 18 conveyed by the covering conveyor belt 8.

[0089] The inlet openings at the beginning of the opposing sidewalls of the folding pressure plate A11 and the folding pressure plate B12 are inclined in opposite directions along the conveying direction of the covering conveyor belt 8.

[0090] The beveled opening consists of arc surfaces A and B that smoothly transition to the opposing sidewalls of the folding pressure plate A11 and the folding pressure plate B12.

[0091] Along the conveying direction of the covering conveyor belt 8, the end of the arc surface B is located behind the end of the arc surface A.

[0092] The end of the shaping plate 13 facing the side wall of the conveyor belt 8 is provided with an outlet bevel, which is an arc surface C that is smoothly connected to the side wall of the shaping plate 13 facing the side wall of the conveyor belt 8.

[0093] The folding pressure plate A11, folding pressure plate B12 and shaping pressure plate 13 are respectively connected to the side of the core coating frame 7 via the connecting side plate 29.

[0094] The folding pressure plate A11, folding pressure plate B12 and shaping pressure plate 13 are fixedly connected to the corresponding connecting side plate 29 by fixing bolts 31. The beginning and end of the folding pressure plate A11 and folding pressure plate B12 are fixed to the corresponding connecting side plate 29 by fixing bolts 31, and the beginning of the shaping pressure plate 13 is fixed to the corresponding connecting side plate 29 by fixing bolts 31.

[0095] The folding pressure plate A11 and folding pressure plate B12 are respectively provided with strip-shaped holes 32 that penetrate through the opposite sidewall edge at the position of the fixing bolt 31. The extension direction of the strip-shaped holes 32 is perpendicular to the conveying direction of the covering conveyor belt 8.

[0096] The shaping rollers include shaping roller A14 and shaping roller B15 arranged sequentially along the conveying direction of the covering conveyor belt 8. Shaping roller A14 is located at the end of the folding device, and shaping roller B15 is located at the end of the core coating frame 7.

[0097] The diameter of the shaping roller A14 is smaller than the diameter of the shaping roller B15, and the height of the bottom edge of the shaping roller A14 is greater than or equal to the height of the bottom edge of the shaping roller B15.

[0098] The drug core coating frame 7 has a drive roller A23 and a drive roller D26 rotatably mounted on its top and bottom sides facing the coating layer fabric frame 2, respectively. The drug core coating frame 7 has a drive roller B24 and a drive roller C25 rotatably mounted on its top and bottom sides facing away from the coating layer fabric frame 2, respectively. The bottom of the drug core coating frame 7 also has a drive roller 9 and a tension roller 27 rotatably mounted. The coating conveyor belt 8 is sequentially connected to the drive rollers A23, B24, C25, 9, 27, and D26 for transmission.

[0099] The bottom surface of the coating conveyor belt 8, located between drive rollers A23 and B24, is in contact with the top surface of the core coating frame 7.

[0100] The coating layer receiving wheel 1, coating layer feeding conveyor wheel 4, core strip feeding conveyor wheel 6, and tension wheel 22 are rotatably connected to the vertical substrate via their respective axles. The drive motor C of the coating layer receiving wheel 1 (not shown in the attached drawings) is fixedly connected to the other end face of the vertical substrate. The coating layer feeding rack 2 and the powder feeding device 5 are respectively connected to the vertical substrate (the vertical substrate is not shown in the attached drawings; the vertical substrate is actually located in the attached drawings). Figure 1 The rear side of each component shown is fixedly connected.

[0101] The folding pressure roller 10 is rotatably connected to the vertical substrate via axle A, the shaping pressure roller A14 is rotatably connected to the vertical substrate via axle B, the shaping pressure roller B15 is rotatably connected to the vertical substrate via axle C, the drive roller 9 and the tension roller 27 are rotatably connected to the vertical substrate via their respective roller shafts, and the drive motor D of the drive roller 9 (not shown in the attached drawings) is fixedly connected to the other end of the vertical substrate; the core coating frame 7 and the wheel brush 28 are fixedly connected to the vertical substrate.

[0102] The core strip 18 is made of non-woven fabric or cotton core, and has a relatively loose structure, which plays a role in the uniform and slow release of the drug powder.

[0103] Before using this application, the powder feeding device 5 needs to be pre-prepared with the traditional Chinese medicine powder to be used to prepare the core of the protective pad. The operator adds the prepared traditional Chinese medicine powder to the powder storage hopper 500 through the powder feeding hopper 501 until the powder is stacked to the top of the cylindrical part 520 of the transparent plexiglass. At this point, adding more powder through the powder feeding hopper 501 to the powder storage hopper 500 is stopped. Then, when the production line needs to discharge the traditional Chinese medicine powder, the drive motors A503 and B505 drive the auger 502 and scraper 504 to rotate around the axis of the powder storage hopper 500, respectively, and the vibrator 511 is also started simultaneously, thus discharging the powder from the powder storage hopper 500. The powder is conveyed downwards through the auger 502 to the discharge pipe 508, and then discharged at a constant speed from the discharge pipe 508 through the connecting pipe 509 into the powder drop pipe 510. Under the action of the vibrator 511, the Chinese medicine powder in the powder drop pipe 510 falls from the sleeve 537 at the bottom of the powder drop pipe 510 to the corresponding position of the coating layer 16 it has passed through. At the same time, the scraper 504 scrapes off the Chinese medicine powder remaining on the inner wall of the cylindrical part 520 of the powder storage hopper 500 so that the Chinese medicine powder can be conveyed downwards by the auger 502, and it is also convenient for the operators to better observe the state and amount of the Chinese medicine powder in the powder storage hopper 500 through the cylindrical part 520 of the transparent plexiglass. If, during subsequent use, the operator finds that the amount of Chinese herbal powder in the powder storage hopper 500 is lower than the level below the cylindrical section 520, the operator should add the prepared Chinese herbal powder directly into the powder storage hopper 500 through the powder feeding hopper 501 until the amount of Chinese herbal powder in the powder storage hopper 500 is stacked to the top of the cylindrical section 520, which can be observed through the transparent plexiglass.

[0104] When this application is used, drive motors A503, B505, C, and D are started respectively. The coating layer feeding conveyor wheel 4 conveys the feeding and conveying coating layer 16 to contact the receiving conveyor belt 3 wrapped around the coating layer receiving wheel 1, and then conveys it through the receiving conveyor belt 3 to the bottom opening of the sleeve 537 at the bottom of the powder discharging device 5. At this time, the Chinese medicine powder in the powder discharging device 5 falls exactly to the middle of the top surface of the coating layer 16 and is conveyed through... Under the action of the arc-shaped structure 538 at the bottom of the sleeve 537, the covering layer 16 of the sleeve 537 is laid on the top surface to form a powder layer 17 of the required width and thickness for the core 20. Then, the covering layer 16 with the powder layer 17 laid on the middle of the top surface is conveyed to the covering layer feeding frame 2 by the receiving conveyor belt 3, and continues to be conveyed to the drive wheel A21 along the top surface of the covering layer feeding frame 2. When the covering layer 16 with the powder layer 17 is conveyed to the drive wheel A21 by the receiving conveyor belt 3, At the designated position, the coating layer feeding conveyor 4 synchronously conveys the core strip 18 to the top surface of the powder layer 17 corresponding to the top surface of the coating layer 16, covering the powder layer 17 so that the powder layer 17 is located between the core strip 18 and the coating layer 16; then the coating layer 16, together with the powder layer 17 and the core strip 18, is conveyed by the receiving conveyor 3 to the drive wheel A21 and then wrapped around the bottom surface of the folding pressure wheel 10, and then contacts the top surface of the coating conveyor 8 at the top of the core coating frame 7 and continues to be conveyed by the coating conveyor 8. Conveying; When the coating layer 16, together with the powder layer 17 and the core strip 18, passes through the bottom surface of the folding roller 10, since the bottom surface of the folding roller 10 only contacts the part of the top surface of the core strip 18 that passes through the folding roller 10, not only can the powder in the powder layer 17 be evenly pressed into the loose pores of the internal structure of the core strip 18, but also when the two sides of the coating layer 16 pass through the bottom surface of the folding roller 10, they fold upward along the two sides of the rim of the folding roller 10 to form the folded part 19 of the coating layer 16;After being folded by the folding roller 10, the coating layer 16, along with the powder layer 17 and the core strip 18, continues to be conveyed along the top of the core coating frame 7 by the coating conveyor belt 8. When the coating conveyor belt 8 conveys the coating layer 16, along with the powder layer 17 and the core strip 18, to the folding device, the folded portions 19 formed by the folding roller 10 on both sides of the coating layer 16 contact the arc surface A of the folding plate A11 and the arc surface B of the folding plate B12 on the corresponding sides, respectively. Since the end of the arc surface B is located behind the end of the arc surface A, when the folded portion 19 in contact with the folding plate A11 has completely passed the arc surface A, the folded portion 19 has been completely folded towards the top surface of the core strip 18 by the folding plate A11 until it is in contact with the top surface of the core strip 18. The folded portion 19, which is in contact with the folding pressure plate B12, has not yet completely passed the arc surface B. That is, the folded portion 19 has not yet completely folded towards the top surface of the core strip 18. Until the folded portion 19 is conveyed to the end of the arc surface B of the folding pressure plate B12 by the covering conveyor belt 8, the folded portion 19 folds towards the top surface of the core strip 18 and is in contact with the top surface of the folded portion 19 that has been folded by the folding pressure plate A11. This makes the core strip 18 and the powder layer 17 at the bottom of the core strip 18 completely covered in the covering layer 16 to form the drug core 20. Then, under the conveying action of the covering conveyor belt 8, the drug core 20 leaves the end of the folding pressure plate B12 and the end of the folding pressure plate A11, and then contacts the beginning of the shaping pressure plate 13. Due to the tilt of the shaping pressure plate 13 body, The slanted design of the shaping platen 13 ensures that it effectively guides the drug core 20. Contact with the shaping platen 13 causes the folded portion 19 at the top of the drug core 20 to be pressed against the top surface of the core strip 18, thus shaping the folded portion 19 of the covering layer 16. The arc-shaped C structure of the shaping platen 13 ensures that the edge of the folded portion 19 on the top surface of the drug core 20, which passes through this area, is always covered by the shaping platen 13, preventing the edge of the folded portion 19 from lifting and affecting subsequent processes. After leaving the shaping platen 13 via the covering conveyor belt 8, the drug core 20 passes sequentially through the shaping rollers A14 and B15. The shaping roller B15 reshapes the folded portion 19 of the drug core 20 after it has been bent. This not only makes the folds of the folded portion 19 deeper and the folded state more stable, but also presses the core strip 18 against the drug powder layer 17 again, allowing more powder from the drug powder layer 17 to enter the loose pores of the internal structure of the core strip 18. Furthermore, the diameter of the shaping roller B15 is larger than that of the shaping roller A14, and the height of the bottom edge of the shaping roller A14 is greater than or equal to the height of the bottom edge of the shaping roller B15. Therefore, the shaping roller B15 exerts a greater downward pressure on the core strip 18 and the contact distance with the core strip 18 is longer, thereby further achieving the effect of filling the core strip 18 with the drug powder in the drug powder layer 17 as fully and evenly as possible.Finally, the core 20, still conveyed by the covering conveyor belt 20, is sequentially transported along the core covering frame 7, leaving the shaping roller B15 and then exiting the core covering frame 7, so that the core 20 can proceed to subsequent processes for producing pads.

[0105] During the above process, since the folding pressure roller 10 is in direct contact with the core strip 18, when the folding pressure roller 10 presses the core strip 18 against the coating layer 16, the powder of the powder layer 17 will enter the loose pores of the internal structure of the core strip 18. In this process, some powder will inevitably pass directly upward through the core strip 18 and contact the bottom surface of the rim of the folding pressure roller 10. In addition, some powder will escape from both sides of the core strip 18. Due to the obstruction of the folding part 19, the powder that escapes from both sides of the core strip 18 will also contact the positions of the two end faces of the folding pressure roller 10 near the bottom rim. As the coating layer 16 continues to convey the powder layer 17 and the core strip 18, the folding pressure roller 10 continues to rotate. The powder remaining on the rim and end face of the folding pressure roller 10 near the rim will transfer to the top surface of the corresponding core strip 18 when the folding pressure roller 10 rotates to the bottom and comes into contact with the corresponding core strip 18, causing contamination of the top surface of the corresponding core strip 18. Furthermore, when the folding part 19 folds to fit against the top surface of the core strip 18, the powder on the top surface of the core strip 18 will escape from the edge of the folding part 19, contaminating the folding part 19 itself and the surrounding air. By using the brush 28 provided on the upper part of the folding pressure roller 10, the powder remaining on the corresponding part of the folding pressure roller 10 that rotates to the position of the brush 28 is brushed away by the top bristles 40 and the side bristles 43 during the process of passing through the brush 28. Since the rim surface of the folding pressure roller 10 is in direct contact with the core strip 18 and there is relative pressure between them, the residual powder will be compacted on the rim surface of the folding pressure roller 10, making it more difficult to remove the residual powder from the rim surface. By using the radially inclined setting of the brush 28 relative to the position of the folding pressure roller 10, and the wiping layer 44 provided on the brush 28, the wiping layer 44 wipes the rim surface of the folding pressure roller 10. The brush plate A37, which is connected to the top brush 40 and the wiping layer 44, and the brush plate B42, which is connected to the side brush 43, are each evenly provided with negative pressure through holes. The negative pressure through holes are connected to the negative pressure device through the negative pressure pipe provided by the inverted "U" shaped frame 35. This allows the powder on the rim surface of the folding pressure roller 10 and the powder near the rim at the end to be brushed and wiped away by the top brush 40, the side brush 43 and the wiping layer 44. The powder remaining on the top brush 40, the side brush 43 and the wiping layer 44 after wiping can be effectively and timely removed. This avoids the accumulation of powder, which affects the subsequent brushing effect of the roller brush 28, and also avoids the excessive accumulation of powder, which would scatter and affect the surrounding environment when brushing the folding pressure roller 10.

Claims

1. A traditional Chinese medicine pad core feeding and coating production line, characterized in that: The system includes a coating receiving wheel (1), a coating material rack (2) on one side of the coating receiving wheel (1), a powder dispensing device (5) on the side of the coating receiving wheel (1) away from the coating material rack (2), a core coating rack (7) below the end of the coating material rack (2) away from the coating receiving wheel (1), a folding pressure roller (10), a folding device and a shaping pressure roller are arranged sequentially above the core coating rack (7) along the direction away from the coating material rack (2), and the powder in the powder dispensing device (5) is dispensed to the middle of the coating layer (16) which is conveyed by the receiving conveyor belt (3) placed around the coating receiving wheel (1) to form a powder layer (17) parallel to the conveying direction of the coating layer (16). After the receiving conveyor belt (3) conveys the coating layer (16) with the powder layer (17) on the top surface to the coating layer fabric rack (2), the powder layer (17) of the coating layer (16) is covered with a core strip (18). After being folded at the bottom by the folding pressure roller (10), it is conveyed by the coating conveyor belt (8) set on the core coating rack (7), and then conveyed through the folding device and the shaping pressure roller in sequence. The coating conveyor belt (8) located at the top of the core coating rack (7) and the receiving conveyor belt (3) located at the top of the coating layer fabric rack (2) convey at the same speed and in the same direction. The coating receiving roller (1), the coating layer fabric rack (2), the powder dropping device (5), the core coating rack (7), the folding pressure roller (10), and the shaping pressure roller are respectively connected to the same side end face of the vertical substrate. ​ 2. The traditional Chinese medicine pad core feeding coating production line of claim 1, characterized in that: The end of the covering layer fabric rack (2) away from the covering layer receiving wheel (1) is rotatably connected to a drive wheel A (21). The receiving conveyor belt (3) is respectively connected to the covering layer receiving wheel (1) and the drive wheel A (21). The receiving conveyor belt (3) placed around the top of the covering layer receiving wheel (1) moves towards the top of the drive wheel A (21) and moves around the drive wheel A (21). The receiving conveyor belt (3) placed around the bottom of the drive wheel A (21) moves towards the covering layer receiving wheel (21). The bottom of the material wheel (1) is conveyed and moved, and is placed around the covering layer receiving wheel (1). The covering layer receiving wheel (1) is the drive wheel of the receiving conveyor belt (3). The receiving wheel (1) and the covering layer fabric rack (2) are located on the opposite side of the covering layer receiving wheel (1) and below the covering layer fabric rack (2). The receiving conveyor belt (3) is connected to the top of the transmission wheel B (22). The transmission wheel B (22) is the tension wheel of the receiving conveyor belt (3).

3. The traditional Chinese medicine pad core feeding coating production line of claim 1, characterized in that: The powder feeding device (5) includes a powder storage hopper (500), the top plate (512) of the powder storage hopper (500) is connected to a powder feeding hopper (501), and an auger (502) is rotatably connected to the shaft center inside the powder storage hopper (500). The lower end of the auger (502) extends into the bottom of the powder storage hopper (500) and is connected to a discharge pipe (508). The auger (502) includes a central shaft (506) and spiral blades fixed to the central shaft (506). The spiral blades are in contact with the inner wall of the discharge pipe (508). The top end of the central shaft (506) is connected to the top plate (512) of the powder storage hopper (501). 2) Drive motor A (503) is connected to the central shaft (506) located on the upper part of the spiral blade and is coaxially connected to the central shaft sleeve (507). The side wall of the central shaft sleeve (507) is evenly distributed with multiple scraper blades (504) that contact the inner wall of the powder storage hopper (500). The central shaft sleeve (507) is connected to the drive motor B (505) fixed on the top plate (512) through a transmission device. The bottom end of the discharge pipe (508) is connected to the powder drop pipe (510) through a connecting pipe (509). The outer side wall of the powder drop pipe (510) is fixed with a vibrator (511).

4. The traditional Chinese medicine pad core feeding and coating production line of claim 3, characterized in that: The auger (502) is located at the position of the conical bucket-shaped part (519) in the lower part of the powder storage hopper (500). The top of the central shaft (506) of the auger (502) is coaxially fixed with a transmission shaft A (517). The top of the transmission shaft A (517) extends upward out of the top plate (512) and is driven and connected to the drive shaft A of the drive motor A (503). The central shaft sleeve (507) is rotatably connected to the transmission shaft A (517). The scraper (504) is located at the position of the cylindrical part (520) in the upper part of the powder storage hopper (500). The outer side wall of the part of the central shaft sleeve (507) extending upward out of the top plate (512) is coaxially fixed with a transmission wheel B (514). The transmission wheel B (514) is coaxially fixed with the transmission shaft B (518) driven by the drive shaft B of the drive motor B (505) and the transmission wheel A (513). The connection between the top end of the central shaft (506) and the bottom end of the transmission shaft A (517) is located inside the central shaft sleeve (507). The bottom end of the central shaft sleeve (507) is located above the spiral blade. The bottom end of the inner wall of the central shaft sleeve (507) is also detachably and coaxially fixed with a sealing ring (529). The inner diameter of the sealing ring (529) is larger than the outer diameter of the central shaft (506), and the inner wall of the sealing ring (529) is coaxially provided with a sealing rubber ring.

5. The herbal pad core feeding and coating production line as described in claim 3, characterized in that: The powder discharge pipe (510) includes a connecting pipe (535) fixedly connected to the connecting pipe (509) at the top and a gradient pipe (536) sealed to the connecting pipe (535) at the bottom. The top of the gradient pipe (536) is a round pipe opening that matches the connecting pipe (535), and the bottom of the gradient pipe (536) is a strip-shaped pipe opening with an inner wall width smaller than the powder discharge width. The gradient pipe (536) is inclined. Vibrators (511) are respectively provided on the outer side of the pipe wall of the connecting pipe (535) and the outer side of the lower pipe wall of the gradient pipe (536). The plane A where the vibrator (511) of the connecting pipe (535) and the axis of the connecting pipe (535) are located is perpendicular to the plane B where the vibrator (511) of the gradient pipe (536) and the axis of the gradient pipe (536) are located. The strip-shaped opening of the gradient tube (536) is detachably fitted with a sleeve (537). The inner wall width of the sleeve (537) matches the width of the powder falling. The bottom edge of the sleeve (537) corresponding to the two side walls of the gradient tube (536) and the bottom edge of the lower side wall of the gradient tube (536) respectively contact the pad to which the powder is to fall. The gap between the bottom edge of the upper side wall of the sleeve (537) and the pad to which the powder is to fall matches the thickness of the Chinese medicine powder layer formed by the falling powder.

6. The herbal pad core feeding and coating production line as described in claim 1, characterized in that: The folding pressure roller (10) is located within the range of the coating conveyor belt (8) driven at the top of the core coating frame (7), and the two sides of the rim of the folding pressure roller (10) that contact the core strip (18) are flush with the side rim of the core strip (18). A wheel brush (28) is also provided above the folding pressure roller (10), and the wheel brush (28) contacts the rim of the folding pressure roller (10) at the top position and the part of the end face of the two wheels near the rim.

7. The herbal pad core feeding and coating production line as described in claim 1, characterized in that: The folding device includes a folding pressure plate A (11) and a folding pressure plate B (12) fixedly connected to the top of the drug core coating frame (7) and arranged opposite to each other on both sides of the coating conveyor belt (8). A shaping pressure plate (13) is also provided on the side of the top of the drug core coating frame (7) where the folding pressure plate B (12) is located, along the conveying direction of the coating conveyor belt (8) and located behind the folding pressure plate B (12). The folding pressure plate A (11) and the folding pressure plate B (12) are both arranged along the conveying direction parallel to the coating conveyor belt (8). The shaping pressure plate (13) is arranged along the conveying direction of the coating conveyor belt (8) from the side where the folding pressure plate B (12) is located toward the folding pressure plate A. (11) The side is inclined; along the conveying direction of the covering conveyor belt (8), the end of the folding pressure plate A (11) is located between the end of the folding pressure plate B (12) and the beginning of the shaping pressure plate (13). There is a gap between the folding pressure plate A (11) and the folding pressure plate B (12). The end of the shaping pressure plate (13) facing the side where the folding pressure plate A (11) is located is on the side of the covering conveyor belt (8) close to the side where the folding pressure plate A (11) is located. The bottom surface of the folding pressure plate A (11), the top surface of the folding pressure plate B (12) and the bottom surface of the shaping pressure plate (13) are all flush with the top surface of the core strip (18) conveyed by the covering conveyor belt (8).

8. The herbal pad core feeding and coating production line as described in claim 7, characterized in that: The inlet openings of the opposite sidewalls of the folding pressure plate A (11) and the folding pressure plate B (12) are inclined in opposite directions along the conveying direction of the covering conveyor belt (8); The bevel is an arc surface A and an arc surface B that are smoothly connected to the opposing sidewalls of the folding pressure plate A (11) and the folding pressure plate B (12); along the conveying direction of the covering conveyor belt (8), the end of the arc surface B is located behind the end of the arc surface A. The end of the shaping plate (13) facing the side wall of the conveyor belt (8) is provided with an outlet bevel, which is an arc surface C that is phototransformed and connected to the side wall of the shaping plate (13) facing the side wall of the conveyor belt (8).

9. The herbal pad core feeding and coating production line as described in claim 7, characterized in that: The shaping rollers include shaping roller A (14) and shaping roller B (15) arranged sequentially along the conveying direction of the covering conveyor belt (8). The shaping roller A (14) is located at the end of the folding device, and the shaping roller B (15) is located at the end of the core coating frame (7). The diameter of the shaping roller A (14) is smaller than the diameter of the shaping roller B (15), and the height of the bottom edge of the shaping roller A (14) is greater than or equal to the height of the bottom edge of the shaping roller B (15).

10. The herbal pad core feeding and coating production line as described in claim 1, characterized in that: The core coating frame (7) has a drive roller A (23) and a drive roller D (26) rotatably mounted on the top and bottom of the end facing the coating layer fabric frame (2), respectively. The core coating frame (7) has a drive roller B (24) and a drive roller C (25) rotatably mounted on the top and bottom of the end facing away from the coating layer fabric frame (2), respectively. The bottom of the core coating frame (7) also has a drive roller (9) and a tension roller (27) rotatably mounted. The coating conveyor belt (8) is connected to the drive roller A (23), drive roller B (24), drive roller C (25), drive roller (9), tension roller (27) and drive roller D (26) in sequence.

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