Folic acid tablet layered compression molding equipment and molding process thereof

Abstract

This invention discloses a folic acid tablet layering and pressing equipment and its molding process, specifically relating to the field of tablet manufacturing equipment technology. It aims to improve the problems of powder leakage from the gap between the pressing rod and the mold, which contaminates the lower transmission components, and uneven layering. The equipment includes a frame, a feeding mechanism, a pressing mechanism, and a discharging mechanism. The pressing mechanism has synchronously rotating upper, middle, and lower turntables. A mold is mounted on the middle turntable, and upper and lower pressing rods are mounted on the upper and lower turntables, respectively. The frame is equipped with guide wheels and guide platforms that cooperate with the pulleys at the ends of the pressing rods to control the lifting and lowering of the pressing rods to complete filling and pressing. A receiving component is provided on the lower pressing rod to receive material falling from the gap between the lower pressing rod and the inner wall of the mold. This structure can collect leaked powder, preventing it from contaminating the lower guide platform and transmission components, and facilitating cleaning and maintenance.

Description

Technical Field

[0001] This invention relates to the field of tablet manufacturing technology, and in particular to a folic acid tablet layering compression molding equipment and its molding process. Background Technology

[0002] Layered compression molding is a common process used to prepare products with specific structures, such as bilayer tablets and two-color tablets. The common practice in the industry is to use a rotary tablet press, which uses multiple feeding stations and a pressing cam track to allow the mold to fill and press different materials sequentially during rotation. In some continuous production conditions, when a process of filling and pressing in stages is adopted, the surface state of the material after the first filling and pre-pressing will be affected by the powder flowability, filling speed, and scraping action. If the upper surface of the material fails to form an ideal flat plane after the first filling, such as a slight slope or unevenness, there is a small probability that the thickness distribution between the layers of the finished tablet will be uneven, with one side being thicker than the other, during the subsequent second filling and final pressing. Although the tolerance range of this thickness deviation is generally acceptable, there are still areas for improvement. In addition, after long-term operation of the tableting equipment, the pressing rod, which is a moving part, may develop tiny wear gaps between itself and the inner wall of the fixed mold due to frequent relative movement. Under conditions of high-speed operation or extremely fine powder particles, a small amount of powdery raw material may leak downwards through these gaps. If this leaked powder falls onto the transmission mechanism at the bottom of the equipment, such as gears, bearings, or guide rails, it will accumulate over a long period of time and have a potential impact on the lubrication status or motion accuracy of the transmission components.

[0003] Based on the aforementioned engineering details that may be exposed in a long-term continuous production environment, there is room for targeted optimization and improvement of the structure of existing layered tableting equipment. Summary of the Invention

[0004] The purpose of this invention is to solve the shortcomings of existing technologies, such as powder leakage from the gap between the pressure rod and the mold, which contaminates the transmission components below, and uneven layering. Therefore, this invention proposes a folic acid tablet layering pressing and molding equipment and its molding process.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A folic acid tablet layering and pressing molding equipment, including a frame; Both feeding mechanism I and feeding mechanism II are located on the side of the frame; A pressing mechanism is located in the middle of the machine frame. The pressing mechanism includes an upper turntable, a middle turntable, and a lower turntable located on the same axis and fixedly connected to each other, arranged from top to bottom. Multiple molds are fixedly embedded in the surface of the middle turntable at equal intervals along a ring. Each mold has a pressing cavity. The upper turntable and the lower turntable are respectively provided with an upper pressing rod and a lower pressing rod that can slide vertically, and each of them cooperates with the corresponding pressing cavity. The top inner wall of the machine frame is provided with guide wheel I, guide wheel II, and guide wheel III. The bottom inner wall of the machine frame is fixedly provided with guide table I and guide table II. The discharge mechanism is located on the side of the frame.

[0006] In one possible design, an upper pulley is rotatably mounted on the top of the upper pressure rod, and three supports are fixedly mounted on the top inner wall of the frame. Guide wheels I, II, and III are all rotatably connected to the supports and cooperate with the upper pulley.

[0007] In one possible design, a sliding pulley is rotatably provided at the bottom of the pressure bar, and the sliding pulley cooperates with guide table I and guide table II.

[0008] In one possible design, the first end of guide platform I is connected to the end of guide platform II, and both guide platform I and guide platform II are provided with beveled feet at their ends.

[0009] In one possible design, the discharge mechanism includes a discharge rack, which is fixedly mounted on one side of the frame and its top is aligned with one side of the turntable. The top of the discharge rack is provided with an integral protrusion on the side of the turntable's rotation direction, and the protrusion is located on the top of the turntable.

[0010] In one possible design, both feeding mechanism I and feeding mechanism II include a storage hopper, a circular temporary storage shell, and a conical platform. The storage hopper is fixedly connected to the frame via a frame arm. A frustum-shaped pipe is fixedly arranged between the storage hopper and the circular temporary storage shell. A base is fixedly arranged at the bottom of the circular temporary storage shell. The conical platform is rotatably arranged on the top of the base and located inside the frustum-shaped pipe. Multiple scraper strips are fixedly arranged at equal intervals along the outer wall of the conical platform. A discharge hole is opened at the bottom of the base. The base is located on top of the central turntable.

[0011] In one possible design, the bottom of the conical platform and the bottom of the lower turntable are both fixedly equipped with rotating shafts, which are connected to an external motor via a synchronous pulley and a synchronous belt.

[0012] In one possible design, the outer wall of the lower pressure rod is provided with a receiving platform, a receiving tray is fitted on the receiving platform, and a receiving groove is provided on the top of the receiving tray. The opening of the receiving groove is a converging structure, and the top inner edge and the bottom inner edge of the opening are respectively set as the upper inner edge and the lower inner edge. The upper inner edge 328 is flush with or recessed from the rod wall, and the lower inner edge is closer to the central axis of the lower pressure rod than the upper inner edge.

[0013] A molding process, applied to any of the folic acid tablet layering and pressing molding equipment described herein, specifically includes the following steps: S1. When the equipment starts, the drive motor drives the upper, middle and lower turntables to rotate synchronously. At the same time, the conical platform of the feeding mechanism drives the scraper to rotate to prevent powder bridging. S2. First filling and pressing: The pressure chamber rotates to the bottom of the feeding mechanism I to complete the filling of the first type of raw material. Then, under the action of the guide wheel I, the upper pressure rod and the lower pressure rod press together to form the core. S3. The core moves downward with the lower pressure bar as it moves away from the guide table I along with the lower roller. At the same time, the upper pressure bar assists the core to fall under the action of the guide roller II. S4. Second filling and pressing: The pressure chamber rotates to the bottom of the feeding mechanism II to complete the filling of the second type of raw material. Then, under the action of the guide wheel III, a second pressing is carried out to form a double-layer folic acid tablet. S5. Finished product discharge: The lower pressing rod moves upward as the sliding roller enters the guide table II, pushing out the finished tablets. After being blocked by the protruding end of the discharge rack, the tablets slide down into the collection container.

[0014] In this application, during actual use, the conical platform is driven to rotate continuously to avoid the accumulation of raw materials, and the conical platform drives multiple scrapers to rotate continuously, so as to continuously send the raw materials out through the discharge hole. As the pressing mechanism rotates, its pressing chamber passes below the feeding mechanism I, connecting with the discharge port. Raw material enters and fills the pressing chamber. The turntable continues to rotate, and excess material is scraped off by the base plate 217. The upper pressing rod passes below the guide wheel I, and its top pulley contacts the guide wheel I, causing the upper pressing rod to move downwards. Meanwhile, the lower pressing rod's sliding pulley is located on the guide table I, allowing the upper and lower pressing rods to compress the raw material inside the pressing chamber. The turntable continues to rotate, causing the lower pressing rod to move downwards, disengaging from the guide table I. The formed tablets fall along with it into the lower part of the pressing chamber, while the upper pressing rod... Simultaneously, it will enter the range of guide roller II, and move further downward based on guide roller I to help the tablet move downward and prevent the tablet from getting stuck in the middle of the pressure chamber. Then the turntable continues to rotate, and the upper pressure rod first leaves the range of guide roller II and moves upward. Then the pressure chamber enters the lower part of the feeding mechanism II to fill the second batch of raw materials. After passing the feeding mechanism II, the upper pressure rod enters the lower part of guide roller III and moves downward again to press the tablet a second time, achieving a double-layer forming effect. Then the upper pressure rod leaves the range of guide roller III, and the lower pressure rod enters the range of guide plate II and moves upward. The tablet will be pushed out of the pressure chamber until it touches the protrusion and then slides out along the discharge rack.

[0015] In this invention, the folic acid tablet layer pressing molding equipment and its molding process, by setting a receiving part on the lower pressing rod, can receive and collect the powdery raw material falling from the gap between the pressing rod and the inner wall of the mold, avoiding the falling raw material from falling directly onto the guide table or transmission component below, which is convenient for maintenance and helps to extend the maintenance cycle of the transmission component. In this invention, the folic acid tablet layer pressing molding equipment and its molding process, by setting a rotatable conical platform and scraper, makes the powder temporarily stored in the feeding mechanism in a state of being moved, which helps to improve the problem of decreased fluidity of the powder due to static storage. In this invention, during use, the feeding mechanism can ensure that the raw material fills the pressure chamber space each time, thereby avoiding the phenomenon of slope. In addition, when the pressure rod 317 enters below the guide wheel II 323, it will be further pressed down to assist the core to move down, thereby avoiding the phenomenon of it adhering to the middle of the pressure chamber 318 and ensuring its operational stability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of a folic acid tablet layering and pressing molding device proposed in this invention; Figure 2 This is an exploded structural diagram of the feeding mechanism of a folic acid tablet layering and pressing equipment proposed in this invention; Figure 3 This is a rear view schematic diagram of a folic acid tablet layering and pressing molding device proposed in this invention; Figure 4 This is a schematic diagram of the left side of a folic acid tablet layering and pressing molding device proposed in this invention; Figure 5 This is a front view schematic diagram of a folic acid tablet layering and pressing molding device proposed in this invention; Figure 6 This is a right-side structural schematic diagram of a folic acid tablet layering and pressing molding device proposed in this invention; Figure 7 This is a three-dimensional structural diagram of the receiving tray of a folic acid tablet layering and pressing molding equipment proposed in this invention; Figure 8 This is an exploded structural diagram of the receiving tray of a folic acid tablet layering and pressing molding equipment proposed in this invention.

[0017] In the diagram: 1. Frame; 2. Feeding mechanism I; 211. Storage hopper; 212. Frustum-shaped pipe; 213. Circular temporary storage shell; 214. Conical platform; 215. Scraper; 216. Discharge hole; 217. Base; 218. Rotating shaft; 3. Pressing mechanism; 311. Upper turntable; 312. Middle turntable; 313. Lower turntable; 314. Support; 315. Guide wheel I; 316. Upper pulley; 317. 318. Upper pressure bar; 319. Pressure chamber; 320. Mold; 321. Lower pressure bar; 322. Lower pulley; 323. Guide table I; 324. Guide wheel II; 325. Receiving tray; 326. Receiving platform; 327. Receiving groove; 328. Upper inner edge; 329. Lower inner edge; 330. Guide wheel III; 4. Discharge mechanism; 411. Discharge rack; 412. Protruding end; 5. Feeding mechanism II. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] In one embodiment: Reference Figure 1 The basic structure of a layered pressing molding equipment includes: a frame 1, a feeding mechanism I 2, a pressing mechanism 3, a discharging mechanism 4, and a feeding mechanism II 5.

[0020] The frame 1 is welded from square steel and forms the main support frame of the equipment. The feeding mechanism I2 and the feeding mechanism II5 have the same structure and are fixedly installed on the upper side of the frame 1 through their own frame arms to provide two different raw materials. The pressing mechanism 3 is located in the middle of the frame 1. The discharging mechanism 4 is fixedly installed on the other side of the frame 1 opposite to the feeding mechanism I2.

[0021] refer to Figure 3-6The pressing mechanism 3 includes an upper turntable 311, a middle turntable 312, and a lower turntable 313, all located on the same vertical axis and locked together by hexagonal socket head cap screws evenly distributed around the circumference. Multiple through holes are machined equidistantly along the circumference of the upper turntable 311, and an upper pressure rod 317 is installed in each through hole. The upper pressure rod 317 is made of stainless steel round rod, and has a clearance fit with the through hole of the upper turntable 311, allowing the upper pressure rod 317 to slide vertically. An upper pulley 3 is rotatably mounted on the top of the upper pressure rod 317 via a bearing. 16. On the surface of the central turntable 312, multiple molds 319 are also fixedly embedded at equal intervals along a ring. The molds 319 are made of high-hardness alloy steel and are press-fitted into the reserved holes of the central turntable 312 by interference fit. Each mold 319 has a pressure cavity 318 in its center. On the lower turntable 313, corresponding to the upper pressure rod 317, multiple through holes are arranged at equal intervals along a ring. Each through hole is fitted with a lower pressure rod 320. The material and diameter of the lower pressure rod 320 are the same as those of the upper pressure rod 317, and there is also a gap between the lower pressure rod 320 and the through hole of the lower turntable 313. For clearance fit, a sliding pulley 321 is rotatably mounted on the bottom of the lower pressure rod 320 in the same manner. Three independent brackets 314 are fixedly mounted on the top inner wall of the frame 1, respectively rotatably connected to the guide wheels: guide wheel I 315, guide wheel II 323, and guide wheel III 330. These are used to sequentially contact the upper pulley 316 that slides above when the upper turntable 311 rotates, generating downward pressure. Guide platforms I 322 and II 324 are fixedly mounted on the bottom inner wall of the frame 1. Guide platforms I 322 and II 324 are composed of long strips... The fixed track is made of wear-resistant steel plate with a smooth top surface. It is used to support and guide the lower roller 321 when the lower turntable 313 rotates, thereby controlling the lifting and lowering of the lower pressure rod 320. The first end of the guide table I 322 (the end near the feeding mechanism I 2) and the end of the guide table II 324 (the end near the discharge mechanism 4) are smoothly connected in space to form a continuous guide path. The ends of the guide table I 322 and the guide table II 324 are both machined with gradually changing slope feet to allow the lower roller 321 to enter or leave the top surface of the guide table smoothly.

[0022] The discharge mechanism 4 includes a discharge rack 411, which is fixed to one side of the frame 1 by welding. The top of the discharge rack 411 and located on the side of the rotation direction of the central turntable 312 are provided with an integral protrusion 412, which is located above the central turntable 312.

[0023] In this embodiment, a return spring (not shown in the figure) is sleeved between the outer wall of the upper pressure rod 317 and the upper edge of the through hole of the upper turntable 311, and between the outer wall of the lower pressure rod 320 and the lower edge of the through hole of the lower turntable 313. The spring of the upper pressure rod 317 provides an upward return force, while the spring of the lower pressure rod 320 provides a downward return force. The spring constant is selected according to the pressure required for pressing the tablet and the weight of the moving parts.

[0024] The drive motor drives the upper turntable 311, the middle turntable 312 and the lower turntable 313 to rotate synchronously through the synchronous belt pulley system. When the pressure cavity 318 of the mold 319 rotates to the bottom of the base plate 217 of the feeding mechanism I2 and is aligned with the discharge hole 216, the first raw material falls into the pressure cavity 318. As the turntable continues to rotate, the bottom surface of the base plate 217 scrapes off the excess raw material at the top of the pressure cavity 318, completing the first filling. At this time, the lower roller 321 of the lower pressing rod 320 is located on the guide table I 322. Subsequently, the pressure chamber 318 rotates to below the guide wheel I 315, and the upper pulley 316 at the top of the upper pressure rod 317 contacts the guide wheel I 315. Under the pressure of the guide wheel I 315, the upper pressure rod 317 moves downward against the spring force, and together with the lower pressure rod 320 below, it performs the first pressing on the raw material in the pressure chamber 318. After the pressing is completed, the upper pulley 316 leaves the guide wheel I 315, and the upper pressure rod 317 rises back under the action of the spring. As the turntable continues to rotate, the lower roller 321 slides down from the end of the guide plate I 322, and the lower pressure rod 320 moves down a short distance under the action of the spring, so that the initially formed core falls into the pressure cavity 318. Meanwhile, the upper pressure rod 317 enters below the guide roller II 323 and is further pressed down to assist the core in moving down and prevent it from sticking to the middle of the pressure cavity 318. Then, the pressure chamber 318 rotates to the bottom of the feeding mechanism II5 to complete the filling of the second raw material. After filling, the upper pressure rod 317 enters the bottom of the guide wheel III330 to perform the second pressing and form a double-layer tablet. Finally, the upper pressure rod 317 disengages from the guide wheel Ⅲ 330 and rises, while the lower pressure rod 320's lower sliding wheel 321 enters the slope of the guide table Ⅱ 324 and rises along it, pushing the completed double-layer tablets out from the bottom of the pressure chamber 318. The pushed-out tablets will be blocked by the protrusion 412, detached from the mold 319, and slide down the discharge rack 411 into the collection container.

[0025] This application can be used in the field of tablet manufacturing, or in other fields applicable to this application.

[0026] In another embodiment: Reference Figure 2A folic acid tablet layering and pressing molding equipment is applied to the tablet manufacturing field. The structure of this embodiment is basically the same as that of the previous embodiment, except that the feeding mechanism is optimized and a leakage prevention structure is added.

[0027] Both feeding mechanisms I2 and II5 include a storage hopper 211, a frustum-shaped pipe 212, a circular temporary storage shell 213, a conical platform 214, a scraper 215, and a base 217. The storage hopper 211 is bolted to the side beam of the frame 1 via a frame arm. The bottom of the storage hopper 211 and the top of the circular temporary storage shell 213 are connected by the same frustum-shaped pipe 212, which facilitates the flow of powder. The bottom of the circular temporary storage shell 213 is welded to the base 217. The conical platform 214 is rotatably mounted at the top center of the base 217 via a bearing, and most of it is located within the internal space of the frustum-shaped pipe 212. On the outer wall of the conical platform 214, along a ring-shaped equidistant... Multiple stainless steel scraper blades 215 are welded on the base. The cross-section of the scraper blades 215 is rectangular. A discharge hole 216 is opened in the center of the base 217. The diameter of the hole is slightly larger than the diameter of the pressure chamber 318. The bottom surface of the base 217 is in contact with the upper surface of the central turntable 312. A rotating shaft 218 is fixedly installed at the bottom of the conical platform 214. The rotating shaft 218 is linked to the motor that drives the lower turntable 313 through a synchronous belt, so that the conical platform 214 rotates continuously and slowly during the operation of the equipment. The continuous rotation of the conical platform 214, together with the agitation of the scraper blades 215, keeps the powder in the temporary storage shell 213 in motion, reducing the "bridging" or poor discharge caused by the static placement of the powder.

[0028] refer to Figure 7-8 In this embodiment, a receiving structure is also provided on the lower pressure rod 320. On the outer wall of the lower pressure rod 320, at the middle of its stroke, a ring-shaped receiving platform 326 is machined. The receiving tray 325 is fixedly sleeved on the receiving platform 326 through its central hole. The top of the receiving tray 325 is provided with a ring-shaped receiving groove 327, and its opening is designed to be inwardly narrowed.

[0029] Specifically, the top inner edge of the opening is the upper inner edge 328, and the bottom inner edge is the lower inner edge 329. The diameter of the upper inner edge 328 is the same as or slightly smaller than the diameter of the lower pressure rod 320 located inside the pressure chamber 318, so as to ensure that when the pressure rod is in the working position, the upper inner edge 328 is flush with or slightly recessed with the rod wall, so that the powdered raw material can slide into its interior. The lower inner edge 329 is closer to the central axis of the lower pressure rod 320, so that the bottom width of the receiving groove 327 is greater than the opening width, forming a slope that can receive more raw material.

[0030] Due to long-term friction, a small gap is generated between the lower pressure rod 320 and the inner wall of the pressure cavity 318 of the mold 319. During the pressing process, extremely fine powder may be squeezed into this gap. To prevent this powder from falling out of the gap when the pressure rod returns, the powder that falls out will not fall directly onto the guide table I 322, guide table II 324 or the transmission components below. In this structure, the falling powder will be received by the receiving groove 327 located directly below it. Since the opening of the receiving groove 327 is narrow and has a slope, the powder can easily enter and accumulate in it. During equipment maintenance, the lower pressure rod 320 assembly can be completely removed and inverted. The powder accumulated in the receiving groove 327 can slide out along the slope for cleaning, extending the maintenance cycle of the main transmission components.

[0031] However, as is well known to those skilled in the art, the working principle and wiring method of the motor are conventional methods or common knowledge, and will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.

[0032] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0033] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A folic acid tablet layering and pressing molding equipment, characterized in that, include: Rack (1); Feeding mechanism I (2) and feeding mechanism II (5) are both located on the side of the frame (1); The pressing mechanism (3) is located in the middle of the frame (1). The pressing mechanism (3) includes an upper turntable (311), a middle turntable (312) and a lower turntable (313) located on the same axis and fixedly connected to each other, arranged from top to bottom. The surface of the middle turntable (312) is fixedly embedded with multiple molds (319) at equal intervals along the ring. The molds (319) are provided with pressing cavities (318). The upper turntable (311) and the lower turntable (313) are respectively provided with an upper pressing rod (317) and a lower pressing rod (320) that can slide vertically, and both are in cooperation with the corresponding pressing cavities (318). The top inner wall of the frame (1) is provided with guide wheel I (315), guide wheel II (323) and guide wheel III (330). The bottom inner wall of the frame (1) is fixedly provided with guide platform I (322) and guide platform II (324). The discharge mechanism (4) is located on the side of the frame (1).

2. The folic acid tablet layering and pressing equipment according to claim 1, characterized in that, The top of the upper pressure rod (317) is rotatably provided with an upper pulley (316), and the top inner wall of the frame (1) is fixedly provided with three supports (314). The guide wheel I (315), guide wheel II (323) and guide wheel III (330) are all rotatably connected to the supports (314) and are all in cooperation with the upper pulley (316).

3. The folic acid tablet layering and pressing equipment according to claim 2, characterized in that, The bottom of the lower pressure bar (320) is rotatably equipped with a lower pulley (321), which cooperates with guide table I (322) and guide table II (324).

4. The folic acid tablet layering and pressing equipment according to claim 1, characterized in that, The first end of the guide platform I (322) is connected to the end of the guide platform II (324), and both the ends of the guide platform I (322) and the guide platform II (324) are provided with bevel feet.

5. The folic acid tablet layering and pressing equipment according to claim 1, characterized in that, The discharge mechanism (4) includes a discharge rack (411), which is fixedly installed on one side of the frame (1) and its top is on one side of the turntable (312). The top of the discharge rack (411) is provided with an integral protrusion (412) on one side of the turntable (312) in the rotation direction, and the protrusion (412) is located on the top of the turntable (312).

6. The folic acid tablet layering and pressing equipment according to claim 1, characterized in that, Both the feeding mechanism I (2) and the feeding mechanism II (5) include a storage bucket (211), a circular temporary storage shell (213), and a conical platform (214). The storage bucket (211) is fixedly connected to the frame (1) via a frame arm. The same frustum-shaped pipe (212) is fixedly arranged between the storage bucket (211) and the circular temporary storage shell (213). A base plate (217) is fixedly arranged at the bottom of the circular temporary storage shell (213). The conical platform (214) is rotatably arranged on the top of the base plate (217) and located inside the frustum-shaped pipe (212). Multiple scraper strips (215) are fixedly arranged at equal intervals along the outer wall of the conical platform (214). A discharge hole (216) is opened at the bottom of the base plate (217). The base plate (217) is located on the top of the central turntable (312).

7. The folic acid tablet layering and pressing equipment according to claim 6, characterized in that, The bottom of the conical platform (214) and the bottom of the lower turntable (313) are both fixedly provided with rotating shafts (218), which are connected to an external motor through a synchronous pulley and a synchronous belt.

8. The folic acid tablet layering and pressing equipment according to claim 1, characterized in that, The outer wall of the lower pressure rod (320) is provided with a receiving platform (326), and a receiving tray (325) is sleeved on the receiving platform (326). The top of the receiving tray (325) is provided with a receiving groove (327). The opening of the receiving groove (327) is a converging structure. The top inner edge and the bottom inner edge of the opening are respectively set as the upper inner edge (328) and the lower inner edge (329). The upper inner edge (328) is flush with or recessed from the rod wall, and the lower inner edge (329) is closer to the central axis of the lower pressure rod (320) than the upper inner edge (328).

9. A molding process applied to a folic acid tablet layering and pressing molding equipment according to any one of claims 1 to 8, characterized in that, Specifically, the following steps are included: S1. When the equipment is started, the drive motor drives the upper turntable (311), the middle turntable (312), and the lower turntable (313) to rotate synchronously. At the same time, the conical platform (214) of the feeding mechanism drives the scraper (215) to rotate to prevent powder bridging. S2. First filling and pressing: The pressure chamber (318) rotates to the bottom of the feeding mechanism I (2) to complete the filling of the first type of raw material. Then, under the action of the guide wheel I (315), the upper pressure rod (317) and the lower pressure rod (320) press together to form the core. S3, the core moves downward with the assistance of the lower pressure bar (320) and moves downward with the lower pulley (321) away from the guide table I (322). At the same time, the upper pressure bar (317) assists the core to fall under the action of the guide wheel II (323). S4. Second filling and pressing: The pressing chamber (318) rotates to the bottom of the feeding mechanism II (5) to complete the filling of the second type of raw material. Then, under the action of the guide wheel III (330), a second pressing is carried out to form a double-layer folic acid tablet. S5. Finished product discharge: The lower pressing rod (320) moves upward as the lower roller (321) enters the guide table II (324), pushing out the finished tablets. The tablets slide into the collection container after being blocked by the protrusion (412) of the discharge rack (411).

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