Environment-friendly rotary tablet press

Abstract

The utility model relates to tablet press technical field especially relates to an environmental protection type rotary tablet press, it includes: work bench, be provided with rotary component on the work bench, be provided with tableting assembly on the rotary component, be provided with collecting assembly on the work bench of tableting assembly one side. The utility model discloses through setting up tableting assembly, utilizes the cooperation of oil storage cylinder, piston rod, piston one and spring, in the tableting process, the lower mould is pressed and moves down, the spring is compressed, and piston one is driven in the oil storage cylinder sliding with piston rod, and hydraulic oil passes through the small hole on piston one and repeatedly flows between two cavities and produces damping force, and the damping force can effectively slow down the spring rebound speed, greatly guaranteed the stability of the lower mould when tableting and resetting, avoided the problem that material slides, tableting is uneven or material is bounced after forming because the lower mould is unstable, ensured the tableting quality, improved the product qualification rate.

Description

Technical Field

[0001] This utility model relates to the field of tablet press technology, and in particular to an environmentally friendly rotary tablet press. Background Technology

[0002] A rotary tablet press is a pharmaceutical equipment that uses a rotating turntable to drive a die through filling, tableting, and tableting processes to compress granular materials into round or irregularly shaped tablets.

[0003] However, traditional rotary tablet presses typically only have a single type of press head. When different tableting requirements need to be met, it is not easy to change the press head, which greatly limits the flexibility and applicability of the equipment. Secondly, after the tableting operation is completed, the tablets will fly out and scatter on the worktable as the rotary table continues to rotate. At the same time, there will be residual flying powder on the lower mold. This flying powder will not only scatter in the work area, causing pollution to the production environment, but also lead to material waste and increase production costs.

[0004] Prior art 1 (Chinese patent application number CN202421240753.5, application date 2024-06-03) discloses an environmentally friendly rotary tablet press. A motor is mounted above the base, and the motor is sequentially connected to a first turntable, a vertical rod, and a second turntable. Both turntables have multiple through holes evenly distributed along their circumference. A lower mold rod is inserted into each through hole on turntable one, and an upper mold rod is inserted into each through hole on turntable two. The lower mold rods and upper mold rods are aligned vertically. A limiting rail is located outside the motor above the base, cooperating with the lower mold rod. An L-shaped plate is located on the rear side of the base, with an inverted limiting rail below the horizontal side of the L-shaped plate, cooperating with the upper mold rod. An L-shaped baffle is located above the base, cooperating with the limiting rail below to prevent material from sliding out.

[0005] Prior art 2 (Chinese patent application number CN202322214201.9, application date 2023-08-17) discloses an environmentally friendly rotary tablet press. A feeding cylinder is installed at the top end of the rotary tablet press body, and a feeding pipe is connected to the bottom of the feeding cylinder. A feeding hopper is installed on the outer side of the rotary tablet press body. After the tablets are compressed, they are gradually pushed out of the die hole by the upper punch and blocked by the retaining arc plate. Under the influence of the rotating turntable, they enter between the retaining arc plate and the limiting arc plate, thus preventing the tablets from sliding out of the space between the retaining arc plate and the limiting arc plate. This ensures that the tablets can enter the feeding hood under the rotation of the turntable, preventing the tablets from sliding out of the turntable. This effectively solves the problem of insufficient tablet protection measures causing tablets to slide out of the tablet press table during the use of a rotary tablet press. Utility Model Content

[0006] The purpose of this invention is to provide an environmentally friendly rotary tablet press to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: it includes a worktable, a rotating assembly is provided on the worktable, a tablet pressing assembly is provided on the rotating assembly, and a collecting assembly is provided on the worktable on one side of the tablet pressing assembly.

[0008] In a preferred embodiment of this utility model, the rotating assembly includes a mounting groove 1 formed on the workbench, a motor is provided on one side of the mounting groove 1, a sprocket 1 is provided on the transmission end of the motor, a rotating shaft is provided in the mounting groove 1 on one side of the motor via a bearing seat, a sprocket 2 is sleeved on the outside of the rotating shaft, a transmission chain is provided between the sprocket 1 and the sprocket 2, a protective plate is provided on the top of the mounting groove 1, the rotating shaft passes through the protective plate, and a rotating table is provided on the top of the rotating shaft.

[0009] In a preferred embodiment of this invention, the tableting assembly includes several mounting slots 2 formed on a rotating table. Each of the mounting slots 2 has a lower mold slidably disposed therein. Each mounting slot 2 has an oil storage cylinder disposed therein. A piston rod is disposed at the bottom of the lower mold corresponding to the position of the oil storage cylinder. A piston is disposed at the bottom of the piston rod. The piston is slidably disposed inside the oil storage cylinder. A spring is disposed between the top of the piston rod and the bottom of the oil storage cylinder.

[0010] As a preferred embodiment of this utility model, a second mounting bracket is provided on the worktable on one side of the rotary table. A telescopic cylinder is provided at the bottom of the second mounting bracket. A mounting plate is provided at the bottom of the telescopic rod of the telescopic cylinder. An upper mold rod is provided at the bottom of the mounting plate. A pair of fixed seats are symmetrically arranged on both sides of the upper mold rod. A pair of fixed columns are provided at the bottom of the mounting plate. The fixed columns pass through the fixed seats, and a fixed cap is threaded to the bottom of the fixed columns.

[0011] As a preferred embodiment of the present invention, the collecting component includes an inverted L-shaped baffle disposed on the workbench, a guide plate disposed on one side of the inverted L-shaped baffle, one end of the guide plate being in contact with the outer wall of the rotary table, and a collection box disposed on one side of the workbench, the collection box being located directly below the tail of the guide plate.

[0012] As a preferred embodiment of this utility model, a suction nozzle is provided on the worktable on one side of the rotating table, a storage box is provided at the bottom of the worktable, a filter screen is provided in the middle of the storage box, a fly powder recovery box is movably arranged in the storage box at the bottom of the filter screen, a pair of guide rails are provided at the bottom of the storage box, the fly powder recovery box is slidably arranged on the guide rails, a blower is provided at the top of the storage box, the suction nozzle is connected to the blower through a pipe, and the blower is connected to the storage box through a pipe.

[0013] As a preferred embodiment of this utility model, a first mounting frame is provided on the side of the workbench away from the second mounting frame, a feeding hopper is provided on the first mounting frame, and a quantitative feeder corresponding to the lower mold is provided at the bottom of the first mounting frame, and the feeding hopper is connected to the quantitative feeder.

[0014] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects: This invention features a rotating assembly where a motor drives a first sprocket, which in turn transmits power to a second sprocket via a transmission chain. This, in turn, drives the rotating shaft and the rotary table to rotate. The transmission method is simple in structure and provides stable power transmission, offering a precise basis for subsequent quantitative feeding and tableting operations. At the same time, the protective plate effectively prevents external dust and debris from entering the mounting slot, protecting the internal components and extending the service life of the equipment.

[0015] This invention utilizes a tableting assembly with an oil reservoir, piston rod, piston one, and spring. During tableting, the lower mold moves downward under pressure, compressing the spring. Simultaneously, the piston rod drives piston one to slide within the oil reservoir. Hydraulic oil flows repeatedly between the two chambers through a small hole on piston one, generating a damping force. This damping force effectively slows down the spring's rebound speed, greatly ensuring the stability of the lower mold during tableting and resetting. This avoids problems such as material slippage, uneven tableting, or tablets flying away after forming due to lower mold instability, ensuring tableting quality and improving product qualification rate. Furthermore, the upper mold rod is fixed to the mounting plate using a fixed seat, fixed column, and fixed cap, resulting in a stable structure that is easy to disassemble and replace. When it is necessary to replace the upper mold rod with a different specification, the operator only needs to loosen the fixed cap to complete the operation, greatly improving the flexibility and applicability of the equipment.

[0016] This invention features a collection component. The inverted L-shaped baffle effectively prevents tablets from flying out during rotation and guides them smoothly into the guide plate, avoiding tablet scattering that causes waste and environmental pollution. Secondly, one end of the guide plate is in contact with the outer wall of the rotating table, ensuring that tablets can accurately slide into the collection box, achieving automatic tablet collection and improving production efficiency. In addition, the suction nozzle, in conjunction with the blower, can promptly remove residual powder from the lower mold after tableting. After impurities are filtered through the filter screen, the powder falls into the powder recovery box. Operators can periodically remove the powder recovery box to refill the box, achieving powder recycling and reuse, reducing production costs, and minimizing powder pollution to the production environment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the rotating component structure of this utility model; Figure 3 This is a schematic diagram of the tablet compression assembly structure of this utility model; Figure 4 This is a schematic diagram of the telescopic cylinder structure in the tableting assembly of this utility model; Figure 5 This is a schematic diagram of the upper mold rod structure in the tableting assembly of this utility model; Figure 6 This is a schematic diagram of the collection component structure of this utility model; Figure 7 This is a schematic diagram of the fly powder recovery box structure in the collection component of this utility model.

[0018] Reference numerals: 1. Workbench; 2. Rotating assembly; 21. Mounting slot 1; 22. Motor; 23. Sprocket 1; 24. Shaft; 25. Sprocket 2; 26. Transmission chain; 27. Protective plate; 28. Rotary table; 3. Pressing assembly; 31. Mounting slot 2; 32. Lower mold; 33. Oil reservoir; 34. Piston rod; 35. Piston 1; 36. Spring; 37. Mounting bracket 2; 38. Telescopic cylinder; 39. Mounting plate; 310. Upper mold rod; 311. Fixed seat; 312. Fixed column; 313. Fixed cap; 4. Collection assembly; 41. Inverted L-shaped baffle; 42. Guide plate; 43. Collection box; 44. Suction nozzle; 45. Storage box; 46. Filter screen; 47. Fly powder recovery box; 48. Guide rail; 49. Blower; 5. Mounting bracket 1; 6. Feed hopper; 7. Quantitative feeder. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0020] like Figures 1-7 As shown, the present invention proposes an environmentally friendly rotary tablet press, which includes a worktable 1, a rotating component 2 on the worktable 1, a tablet pressing component 3 on the rotating component 2, and a collecting component 4 on one side of the worktable 1 of the tablet pressing component 3.

[0021] The rotating assembly 2 includes a mounting slot 21 on the worktable 1, which provides a mounting base for other components in the rotating assembly 2. A motor 22 is installed on one side of the mounting slot 21, and a sprocket 23 is installed at the transmission end of the motor 22. The motor 22 provides power to drive the sprocket 23 to rotate. A rotating shaft 24 is installed in the mounting slot 21 on one side of the motor 22 through a bearing seat. A sprocket 25 is sleeved on the outside of the rotating shaft 24. A transmission chain 26 is installed between the sprocket 23 and the sprocket 25. The sprocket 25 receives the power transmitted by the sprocket 23 through the transmission chain 26 and drives the rotating shaft 24 to rotate. A protective plate 27 is installed on the top of the mounting slot 21 to protect the components in the mounting slot 21 from external environmental interference. The rotating shaft 24 passes through the protective plate 27, and a rotating platform 28 is installed on the top of the rotating shaft 24. The rotating platform 28 rotates with the rotating shaft 24, driving the lower mold 32 on it to rotate.

[0022] The tableting assembly 3 includes several mounting slots 31 formed on the rotary table 28. A lower mold 32 is slidably disposed within each mounting slot 31. The lower mold 32 is used to hold materials and cooperates with the upper mold rod 310 to complete the tableting operation. An oil reservoir 33 is disposed within each mounting slot 31 to store hydraulic oil. A piston rod 34 is disposed at the bottom of the lower mold 32 corresponding to the position of the oil reservoir 33. The piston rod 34 connects the lower mold 32 and the piston 35 to transmit pressure. A piston is disposed at the bottom of the piston rod 34. Piston 35 is slidably disposed inside oil reservoir 33. Piston 35 divides the space inside oil reservoir 33 into two chambers, causing hydraulic oil to flow between the chambers and generating damping force. This, together with spring 36, ensures the stability of lower mold 32. Spring 36 is disposed between the top of piston rod 34 and the bottom of oil reservoir 33. Spring 36 is compressed during the pressing operation and provides a restoring force to lower mold 32 after pressing is completed. It works in conjunction with piston rod 34, piston 35 and oil reservoir 33 to ensure the stability of lower mold 32.

[0023] A mounting bracket 37 is provided on the workbench 1 on one side of the rotary table 28. The mounting bracket 37 provides a mounting base for the telescopic cylinder 38. The telescopic cylinder 38 is located at the bottom of the mounting bracket 37. A mounting plate 39 is located at the bottom of the telescopic rod of the telescopic cylinder 38. The telescopic cylinder 38 drives the mounting plate 39 and the upper mold rod 310 to rise and fall through the telescopic movement of the telescopic rod. The upper mold rod 310 is located at the bottom of the mounting plate 39. The upper mold rod 310 cooperates with the lower mold 32 to complete the pressing. A pair of fixed seats 311 are symmetrically arranged on both sides of the upper mold rod 310. A pair of fixed posts 312 are located at the bottom of the mounting plate 39. The fixed posts 312 pass through the fixed seats 311. A fixed cap 313 is threaded to the bottom of the fixed posts 312. The fixed seats 311 cooperate with the fixed posts 312 and the fixed cap 313 to fix the upper mold rod 310.

[0024] The collecting component 4 includes an inverted L-shaped baffle 41 set on the workbench 1. The inverted L-shaped baffle 41 prevents tablets from flying out during rotation and guides the tablets into the guide plate 42. The guide plate 42 is set on one side of the inverted L-shaped baffle 41. One end of the guide plate 42 is in contact with the outer wall of the rotating table 28. The guide plate 42 guides the tablets that have been compressed to the collection box 43. The collection box 43 is set on one side of the workbench 1. The collection box 43 is located directly below the tail of the guide plate 42 and collects the tablets that have been compressed.

[0025] A suction nozzle 44 is installed on the workbench 1 on one side of the rotary table 28. The suction nozzle 44 sucks up the flying powder generated during the tableting process. A storage box 45 is installed at the bottom of the workbench 1. A filter screen 46 is installed in the middle of the storage box 45. The filter screen 46 filters out impurities in the flying powder. A flying powder recovery box 47 is movably installed in the storage box 45 at the bottom of the filter screen 46. The flying powder recovery box 47 collects the flying powder filtered by the filter screen 46 and can be slid out for recycling and reuse. A pair of guide rails 48 are installed at the bottom of the storage box 45. The flying powder recovery box 47 is slidably installed on the guide rails 48. The guide rails 48 provide guidance for the flying powder recovery box 47, making it easy to take out and put in. A blower 49 is installed at the top of the storage box 45. The suction nozzle 44 is connected to the blower 49 through a pipe. The blower 49 is connected to the storage box 45 through a pipe. The blower 49 provides suction so that the suction nozzle 44 can suck up the flying powder.

[0026] On the workbench 1, away from the mounting frame 37, there is a mounting frame 5. The mounting frame 5 provides a mounting base for the feed hopper 6 and the quantitative feeder 7. The feed hopper 6 is installed on the mounting frame 5. The feed hopper 6 is used to add the material to be compressed. The bottom of the mounting frame 5 is equipped with a quantitative feeder 7 corresponding to the lower mold 32. The feed hopper 6 is connected to the quantitative feeder 7. The quantitative feeder 7 quantitatively conveys the material in the feed hopper 6 to the lower mold 32.

[0027] In operation, the operator first adds the material through the feed hopper 6. The quantitative feeder 7 then quantitatively delivers the material to the lower mold 32 on the rotary table 28. Next, the rotating assembly 2 is started, and the motor 22 drives the first sprocket 23 to rotate. The first sprocket 23 transmits power to the second sprocket 25 through the transmission chain 26, which in turn drives the rotating shaft 24 and the rotary table 28 to rotate. The rotary table 28 sequentially rotates the lower mold 32 without material to directly below the quantitative feeder 7, and simultaneously rotates the lower mold 32 containing material to directly below the upper mold rod 310 in the tableting assembly 3. At this time, the telescopic rod of the telescopic cylinder 38 extends, driving the mounting plate 39 and the upper mold rod 310 to press down. 10 works in conjunction with the lower mold 32 to complete the tableting operation. During the tableting process, the lower mold 32 moves downward under pressure, the spring 36 is compressed, and the piston rod 34 drives the piston 35 to slide inside the oil reservoir 33. The piston 35 divides the space inside the oil reservoir 33 into two chambers. The hydraulic oil in the oil reservoir 33 flows repeatedly between the two chambers through different small holes on the piston 35. The friction between the hole wall and the hydraulic oil, as well as the internal friction between the hydraulic oil molecules, will hinder the flow of hydraulic oil, generate damping force, slow down the rebound speed of the spring 36, ensure the stability of the lower mold 32, ensure the stability of the material during tableting and when the lower mold 32 is reset, and prevent the tablets after forming from being ejected.

[0028] After tableting is completed, the rotary table 28 continues to rotate. Guided by the inverted L-shaped baffle 41, the tablets enter the guide plate 42 and then slide into the collection box 43. The remaining lower molds 32 rotate sequentially to directly below the upper mold rod 310, repeating the above operation. When the lower mold 32 that has completed tableting rotates to the suction nozzle 44 position, the blower 49 starts to provide suction for the suction nozzle 44. The suction nozzle 44 sucks up the residual fly powder on the lower mold 32. The fly powder enters the storage box 45 through a pipe, and after being filtered by the filter screen 46, it falls into the fly powder recovery box 47. The fly powder recovery box 47 can be removed periodically to refill the fly powder, realizing continuous tableting, collection, and fly powder recycling. When the operator needs to replace the upper mold rod 310, the entire device can be closed first. Hold the upper mold rod 310 with one hand and loosen and remove the fixing caps 313 on both sides with the other hand to remove the upper mold rod 310. Align the fixing seats 311 on both sides of the new upper mold rod 310 with the fixing posts 312, so that the fixing posts 312 pass through the round holes on the fixing seats 311. Then tighten the fixing caps 313 to complete the installation.

[0029] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. An environmentally friendly rotary tablet press, comprising: The workbench (1) is characterized in that: a rotating component (2) is provided on the workbench (1), a tablet pressing component (3) is provided on the rotating component (2), and a collecting component (4) is provided on the workbench (1) on one side of the tablet pressing component (3).

2. The environmentally friendly rotary tablet press according to claim 1, characterized in that: The rotating assembly (2) includes a mounting slot (21) on the workbench (1). A motor (22) is provided on one side of the mounting slot (21). A sprocket (23) is provided at the transmission end of the motor (22). A rotating shaft (24) is provided in the mounting slot (21) on one side of the motor (22) through a bearing seat. A sprocket (25) is sleeved on the outside of the rotating shaft (24). A transmission chain (26) is provided between the sprocket (23) and the sprocket (25). A protective plate (27) is provided on the top of the mounting slot (21). The rotating shaft (24) passes through the protective plate (27). A rotating table (28) is provided on the top of the rotating shaft (24).

3. The environmentally friendly rotary tablet press according to claim 2, characterized in that: The tablet compression assembly (3) includes several mounting slots (31) on a rotating table (28). A lower mold (32) is slidably disposed in each of the mounting slots (31). An oil storage cylinder (33) is disposed in each mounting slot (31). A piston rod (34) is disposed at the bottom of the lower mold (32) corresponding to the position of the oil storage cylinder (33). A piston (35) is disposed at the bottom of the piston rod (34). The piston (35) is slidably disposed in the oil storage cylinder (33). A spring (36) is disposed between the top of the piston rod (34) and the bottom of the oil storage cylinder (33).

4. The environmentally friendly rotary tablet press according to claim 3, characterized in that: A mounting bracket two (37) is provided on the workbench (1) on one side of the rotary table (28). A telescopic cylinder (38) is provided at the bottom of the mounting bracket two (37). A mounting plate (39) is provided at the bottom of the telescopic rod of the telescopic cylinder (38). An upper mold rod (310) is provided at the bottom of the mounting plate (39). A pair of fixed seats (311) are symmetrically arranged on both sides of the upper mold rod (310). A pair of fixed columns (312) are provided at the bottom of the mounting plate (39). The fixed columns (312) penetrate the fixed seats (311). A fixed cap (313) is threaded to the bottom of the fixed columns (312).

5. The environmentally friendly rotary tablet press according to claim 4, characterized in that: The collection component (4) includes an inverted L-shaped baffle (41) on the workbench (1), a guide plate (42) is provided on one side of the inverted L-shaped baffle (41), one end of the guide plate (42) is in contact with the outer wall of the rotary table (28), and a collection box (43) is provided on one side of the workbench (1), the collection box (43) is located directly below the tail of the guide plate (42).

6. The environmentally friendly rotary tablet press according to claim 5, characterized in that: A suction nozzle (44) is provided on the workbench (1) on one side of the rotary table (28). A storage box (45) is provided at the bottom of the workbench (1). A filter screen (46) is provided in the middle of the storage box (45). A fly powder recovery box (47) is movably arranged in the storage box (45) at the bottom of the filter screen (46). A pair of guide rails (48) are provided at the bottom of the storage box (45). The fly powder recovery box (47) is slidably arranged on the guide rails (48). A blower (49) is provided at the top of the storage box (45). The suction nozzle (44) is connected to the blower (49) through a pipe. The blower (49) is connected to the storage box (45) through a pipe.

7. An environmentally friendly rotary tablet press according to claim 6, characterized in that: On the workbench (1), a mounting frame (5) is provided on the side away from the mounting frame (37). A feeding hopper (6) is provided on the mounting frame (5). A quantitative feeder (7) corresponding to the lower mold (32) is provided at the bottom of the mounting frame (5). The feeding hopper (6) is connected to the quantitative feeder (7).

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