Adjustable rotary tablet press
By introducing an automatic mold height adjustment mechanism and a discharge mechanism into the tablet press, the problems of inconvenient mold adjustment and low tablet collection efficiency have been solved, achieving highly efficient automation of tablet production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HAINAN WEIJIAN PHARMACEUTICAL CO LTD
- Filing Date
- 2025-06-03
- Publication Date
- 2026-05-15
AI Technical Summary
Existing tablet presses suffer from problems such as inconvenient mold height adjustment and low tablet collection efficiency in tablet compression processing.
The device employs an adjustment mechanism to automatically adjust the height of the pressing die and a discharge mechanism to ensure timely tablet discharge. Combined with the design of a motor-driven die and a pusher plate, it achieves automated tablet production and efficient collection.
It improves the ease of mold height adjustment and tablet collection efficiency, reduces manual labor intensity, and increases production efficiency.
Smart Images

Figure CN224240492U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pharmaceutical production technology, specifically to an adjustable rotary tablet press. Background Technology
[0002] A tablet press is a machine that compresses powdered materials into tablets using a mold. It is used in the pharmaceutical industry to compress various Chinese and Western medicine preparations, as well as in the health product industry to compress similar products. Tablets are typically made by compressing powdered materials into tablets, which are then coated as needed. However, existing tablet presses can only compress tablets of the same thickness, limiting their applicability.
[0003] CN213353668U discloses a high-efficiency rotary tablet press. The press has a casing with a storage chamber at its lower end. A rotary motor is located at the upper center of the storage chamber, and a rotating disk is connected to the output shaft of the motor. Multiple tableting slots are evenly spaced along the outer circumference of the rotating disk. Each tableting slot has a mounting component screwed into its lower end, extending beyond the slot. A lower pressing die is located above the mounting component, and a spring connects the mounting component and the lower pressing die. A first fixing rod is located on one side of the rotating disk, with a feeding hopper on it. An electric telescopic rod is located on the inner top of the casing, with an upper pressing die at its telescopic end, positioned to one side of the feeding hopper along the rotation direction of the rotating disk. This invention, by screwing mounting components into the lower ends of the tableting slots and adjusting the distance between their upper surfaces and the upper surface of the rotating disk, can produce tablets of different thicknesses.
[0004] However, the technology in this patent still has some shortcomings in the tablet compression process:
[0005] 1. In this patent, although the height of the pressing mold can be adjusted, it needs to be manually adjusted before the pressing process, which results in a large workload and high work intensity, and at the same time makes the adjustment of the height of the pressing mold inconvenient.
[0006] 2. In this patent, after the pressing process, the lower end of the push rod rotates to abut against the upper surface of the arc-shaped inclined plate through the rotation of the rotating seat and the cooperation of the arc-shaped inclined plate. The push rod rises as the height of the arc-shaped inclined plate gradually increases. When the lower end of the push rod abuts against the highest point of the arc-shaped inclined plate, the tablet in the tableting groove is pushed out, and the tablet is swept into the feeding hopper by the scraper to complete the feeding. Since there is a certain time difference between the tablet forming and the tablet feeding, the tablet collection efficiency is affected. Utility Model Content
[0007] In order to solve the above problems, the purpose of this utility model is to provide an adjustable rotary tablet press.
[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: an adjustable rotary tablet press, the rotary tablet press including a machine box, a rotating unit, a drug dispensing unit, a tableting unit and a powder suction unit, the rotating unit, the drug dispensing unit, the tableting unit and the powder suction unit are assembled in the inner cavity of the machine box;
[0009] The rotating unit includes a rotating disk and a rotating motor. The rotating motor is assembled in the inner cavity of the housing. The drive output end of the rotating motor is fixedly connected to the shaft center on the lower surface of the rotating disk. The upper surface of the rotating disk has several pressing slots arranged in a ring array. One end of each pressing slot is provided with a pressing mold.
[0010] The inner cavity of the machine casing and the rotating disk are equipped with adjustment mechanisms, and the inner cavity of the machine casing is equipped with a discharge mechanism;
[0011] The adjustment mechanism includes several movable chambers arranged in a ring array inside the rotating disk. The movable chambers are located below the tableting groove and are connected to the tableting groove. An isolation plate is fixedly installed at one end of each movable chamber. An internally threaded sleeve is rotatably installed between the bottom wall of the movable chamber and the isolation plate. A threaded rod is rotatably installed on the inner wall of the internally threaded sleeve. One end of the threaded rod is rotatably connected to the lower surface of the lower pressing mold. An arc-shaped seat is fixedly installed at one end of each internally threaded sleeve.
[0012] The inner cavity of the chassis is fixedly equipped with a first motor, and the drive output end of the first motor is fixedly equipped with a rotating rod. The inner cavity of the chassis is rotatably equipped with a rotating shaft. One end of the rotating rod and one end of the rotating shaft are both fixedly equipped with bevel gears, which mesh with each other. The other end of the rotating shaft is fixedly equipped with an arc-shaped block. The lower surface of several arc-shaped seats is provided with arc-shaped grooves, and the arc-shaped block is in movable contact with the inner wall of one of the arc-shaped grooves.
[0013] Preferably, each of the several movable cavities has two guide grooves on its sidewalls. A guide block is slidably mounted on one end of each guide groove, and an L-shaped connecting plate is fixedly mounted on one side of each guide block. One end of two adjacent L-shaped connecting plates is fixedly connected to the lower surface of a pressing mold. A support frame is fixedly mounted inside the housing. The fixed end of the first motor is fixedly connected to the inner wall of the support frame, and the rotating shaft is rotatably connected to one end of the support frame.
[0014] Preferably, the discharge mechanism includes a discharge plate, which is fixedly disposed in the inner cavity of the machine housing. One side of the discharge plate is in movable contact with the outer wall of the rotating disk, and an annular cavity is formed on the upper surface of the discharge plate.
[0015] Preferably, a rotating shaft is rotatably mounted at the center of the discharge disc, and an L-shaped connecting rod is fixedly mounted at one end of the rotating shaft. A pusher plate is fixedly mounted at the other end of the L-shaped connecting rod, and the pusher plate is in movable contact with the inner wall of the annular cavity. The pusher plate is arc-shaped.
[0016] Preferably, the bottom wall of the annular cavity has a discharge hole, and a discharge hopper is fixedly installed inside the machine housing. The discharge hopper is inclined and located below the discharge hole. A second motor is fixedly installed on the lower surface of the discharge plate, and the drive output end of the second motor is fixedly connected to the other end of the rotating shaft.
[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0018] 1. In this utility model, by setting an adjustment component, before adding powder, the adjustment component drives the lower pressing mold to rise and fall vertically in the tableting groove, which can realize the automatic adjustment of the lower pressing mold, which facilitates the pressing and processing of tablets of different thicknesses, and at the same time improves the convenience of adjusting the height of the lower pressing mold. After the tablet pressing and processing, the adjustment component drives the lower pressing mold to rise to the initial height, which can separate the tablet from the tableting groove, making it easier for the subsequent tablet discharge.
[0019] 2. In this utility model, by setting the discharge mechanism, the pusher plate is controlled to rotate counterclockwise 360 degrees, so that the tablet is located at the position of the discharge hole. The tablet is discharged outward through the discharge hole and the discharge hopper, thus facilitating the timely discharge of the tablet after pressing and improving the tablet collection efficiency. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 This is a schematic diagram of the overall structure of an adjustable rotary tablet press according to the present invention.
[0022] Figure 2 This is a schematic diagram of the structure of the rotating unit, drug dosing unit, tableting unit, adjusting mechanism and discharging mechanism of this utility model.
[0023] Figure 3 This is a schematic diagram of the connection structure between the adjustment mechanism and the discharge mechanism of this utility model and the rotary disk.
[0024] Figure 4 This is a schematic diagram of another connection structure between the adjustment mechanism and the discharge mechanism of this utility model and the rotary disk.
[0025] Figure 5 This is a cross-sectional structural diagram of the rotating disk of this utility model.
[0026] Figure 6 This is a schematic diagram of the adjustment mechanism of this utility model.
[0027] Figure 7 This is a schematic diagram of the material discharge mechanism of this utility model.
[0028] In the diagram: 1-Chassis; 2-Rotating unit; 3-Dosing unit; 4-Tableting unit; 5-Powder suction unit; 6-Adjusting mechanism; 8-Discharge mechanism; 21-Rotating disk; 22-Rotating motor; 23-Tableting groove; 24-Lower pressing mold; 41-Electric telescopic rod; 42-Upper pressing mold; 61-Moving cavity; 62-Isolation disk; 63-Internal threaded sleeve; 64-Threaded rod; 65-Guide groove; 66-Guide block; 67-L-shaped connecting plate; 68-Arc-shaped seat; 7-Support frame; 71-First motor; 72-Rotating rod; 73-Rotating shaft; 74-Bevel gear; 75-Arc-shaped block; 76-Arc-shaped groove; 81-Discharge disk; 82-Annular cavity; 83-Rotating shaft; 84-L-shaped connecting rod; 85-Push plate; 86-Discharge hole; 87-Discharge hopper; 88-Second motor. Detailed Implementation
[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0030] Example:
[0031] like Figure 1-7 As shown, this utility model provides an adjustable rotary tablet press. The rotary tablet press includes a housing 1, a rotating unit 2, a drug dispensing unit 3, a tableting unit 4, and a powder suction unit 5. The rotating unit 2, the drug dispensing unit 3, the tableting unit 4, and the powder suction unit 5 are assembled in the inner cavity of the housing 1. The drug dispensing unit 3 adds raw materials to the rotating unit 2 to achieve feeding. The tableting unit 4 compresses the raw materials to form tablets. The powder suction unit 5 absorbs excess powder. This is the prior art disclosed in the prior art document and will not be described in detail here.
[0032] See Figure 1The rotating unit 2 of this application includes a rotating disk 21 and a rotating motor 22. The rotating motor 22 is assembled in the inner cavity of the housing 1. The drive output end of the rotating motor 22 is fixedly connected to the shaft center of the lower surface of the rotating disk 21. By starting the rotating motor 22, the rotating motor 22 can make the rotating disk 21 rotate. The upper surface of the rotating disk 21 is provided with a plurality of tablet pressing slots 23 arranged in a ring array. One end of each of the tablet pressing slots 23 is provided with a pressing mold 24. By setting the tablet pressing slots 23 and the pressing mold 24, when the rotating disk 21 rotates, the plurality of tablet pressing slots 23 can correspond one by one with the drug dispensing unit 3 and the tablet pressing unit 4. By adjusting the height of the pressing mold 24, the pressing processing of tablets of different thicknesses can be realized.
[0033] See Figure 2 The tableting unit 4 of this application includes an electric telescopic rod 41 and an upper pressing mold 42. The fixed end of the electric telescopic rod 41 is fixedly installed on the top wall of the machine box 1, and the upper pressing mold 42 is fixedly installed on the piston end of the electric telescopic rod 41. By activating the electric telescopic rod 41, the piston end of the electric telescopic rod 41 can make the upper pressing mold 42 descend vertically. When the upper pressing mold 42 enters the interior of the tableting groove 23, it cooperates with the action of the lower pressing mold 24 to compress the powder into tablets.
[0034] See Figure 2 and Figure 3 The inner cavity of the casing 1 and the rotating disk 21 of this application are provided with an adjustment mechanism 6, and the inner cavity of the casing 1 is provided with a discharge mechanism 8. By setting the adjustment mechanism 6, the adjustment mechanism 6 can automatically adjust the height of the pressing mold 24 in the tableting groove 23, and can make the tablets after tableting separate from the tableting groove 23, thereby improving the convenience of adjustment operation. By setting the discharge mechanism 8, the discharge mechanism 8 can make the tablets separate from the rotating disk 21 and realize the collection of tablets. Compared with the discharge method in the comparative case, the collection efficiency of tablets is improved.
[0035] See Figure 5 and Figure 6The adjustment mechanism 6 of this application includes several movable cavities 61, which are arranged in a ring array within the rotating disk 21. The movable cavities 61 are located below and connected to the tablet pressing groove 23. An isolation disk 62 is fixedly installed at one end of each movable cavity 61. The isolation disk 62 isolates the tablet pressing groove 23 from the movable cavity 61. An internally threaded sleeve 63 is rotatably installed between the bottom wall of the movable cavity 61 and the isolation disk 62. A threaded rod 64 is rotatably installed on the inner wall of the internally threaded sleeve 63. One end of the threaded rod 64 is rotatably connected to the lower surface of the lower pressing mold 24. By driving the internally threaded sleeve 63 to rotate, the internal thread... The threaded sleeve 63 allows the threaded rod 64 to rotate within the threaded sleeve 63. The rotation of the threaded rod 64 allows the pressing die 24 to rise and fall vertically within the tableting groove 23, thereby achieving height adjustment of the pressing die 24. After the tableting of the powder is completed, the pressing die 24 is driven to rise to the initial height, so that the formed tablet is located on the upper surface of the rotating disk 21. Each of the several movable cavities 61 has two guide grooves 65 on its sidewall. A guide block 66 is slidably provided at one end of the guide groove 65. An L-shaped connecting plate 67 is fixedly provided on one side of the guide block 66. One end of two adjacent L-shaped connecting plates 67 is fixedly connected to the lower surface of a pressing die 24. By setting guide groove 65, guide block 66 and L-shaped connecting plate 67, guide block 66 can move vertically up and down in guide groove 65, so that L-shaped connecting plate 67 can guide the pressing die 24 vertically. One end of several internal threaded sleeves 63 is fixedly provided with arc-shaped seat 68. By setting arc-shaped seat 68, when arc-shaped seat 68 rotates, arc-shaped seat 68 can make internal threaded sleeves 63 rotate.
[0036] See Figure 6In this application, a first motor 71 is fixedly installed inside the casing 1. A rotating rod 72 is fixedly installed at the drive output end of the first motor 71. A rotating shaft 73 is rotatably installed inside the casing 1. A support frame 7 is fixedly installed inside the casing 1. The fixed end of the first motor 71 is fixedly connected to the inner wall of the support frame 7. The rotating shaft 73 is rotatably connected to one end of the support frame 7. By setting the support frame 7, the support frame 7 can support the first motor 71 and the rotating rod 72. A bevel gear 74 is fixedly installed at one end of the rotating rod 72 and one end of the rotating shaft 73. The two bevel gears 74 mesh with each other. By starting the first motor 71, the drive shaft of the first motor 71 can cause the rotating rod 72 to rotate. The rotating rod 72 can be driven by… The bevel gear 74 causes the rotating shaft 73 to rotate. An arc-shaped block 75 is fixedly installed at the other end of the rotating shaft 73. By driving the rotating shaft 73 to rotate, the rotating shaft 73 can cause the arc-shaped block 75 to rotate. The lower surface of several arc-shaped seats 68 is provided with arc-shaped grooves 76. The arc-shaped block 75 is in movable contact with the inner wall of one of the arc-shaped grooves 76. By providing the arc-shaped grooves 76, when the rotating disk 21 rotates, the arc-shaped seat 68 and the arc-shaped grooves 76 follow the circumference to revolve, so that the arc-shaped block 75 can always enter the arc-shaped grooves 76. When the rotating disk 21 rotates again, the arc-shaped grooves 76 disengage from the arc-shaped block 75. By driving the arc-shaped block 75 to rotate, the arc-shaped block 75 can cause the arc-shaped seat 68 to rotate through the arc-shaped grooves 76.
[0037] See Figure 7 The discharge mechanism 8 of this application includes a discharge plate 81, which is fixedly installed in the inner cavity of the machine box 1. One side of the discharge plate 81 is in contact with the outer wall of the rotating disk 21. An annular cavity 82 is provided on the upper surface of the discharge plate 81. By providing the annular cavity 82, the tablet formed by the pressing process can enter the annular cavity 82.
[0038] See Figure 7 In this application, a rotating shaft 83 is rotatably mounted at the axis of the discharge disc 81. An L-shaped connecting rod 84 is fixedly mounted at one end of the rotating shaft 83, and a pusher plate 85 is fixedly mounted at the other end of the L-shaped connecting rod 84. The pusher plate 85 is arc-shaped and makes movable contact with the inner wall of the annular cavity 82. A second motor 88 is fixedly mounted on the lower surface of the discharge disc 81. The drive output end of the second motor 88 is fixedly connected to the other end of the rotating shaft 83. By turning on the second motor 88, the drive shaft of the second motor 88 can cause the rotating shaft 83 to rotate. The rotating shaft 83 can cause the pusher plate 85 to revolve around the axis of the rotating shaft 83 via the L-shaped connecting rod 84. (See reference...) Figure 3 When the pusher plate 85 rotates counterclockwise 180 degrees, the inner wall of the pusher plate 85 can contact the outer wall of the tablet. When the pusher plate 85 rotates counterclockwise again, it can push the tablet to revolve in a circular motion into the annular cavity 82.
[0039] See Figure 7The bottom wall of the annular cavity 82 of this application is provided with a feeding hole 86, and a discharge hopper 87 is fixedly provided in the inner cavity of the machine box 1. The discharge hopper 87 is inclined and located below the feeding hole 86. By setting the feeding hole 86 and the discharge hopper 87, when the pusher plate 85 pushes the tablet to rotate 180 degrees, the tablet can be located at the position of the feeding hole 86, and the tablet is discharged outward through the feeding hole 86 and the discharge hopper 87.
[0040] The working principle of this application is as follows: During the tablet pressing process, the operator starts the first motor 71. The drive shaft of the first motor 71 causes the rotating rod 72 to rotate. The rotating rod 72 causes the rotating shaft 73 to rotate through two bevel gears 74. The rotating shaft 73 causes the arc block 75 to rotate. The arc block 75 causes an arc seat 68 to rotate through a corresponding arc groove 76. The arc seat 68 causes the internal threaded sleeve 63 to rotate. The internal threaded sleeve 63 causes the threaded rod 64 to rotate within the internal thread of the internal threaded sleeve 63. The rotation of the threaded rod 64 causes the lower pressing mold 24 to descend vertically within the tablet pressing groove 23, thereby facilitating the height adjustment of the lower pressing mold 24.
[0041] When the powder is added into the corresponding tableting slot 23, as the rotary motor 22 drives the rotary disk 21 to rotate, when the tableting slot 23 containing the powder is vertically aligned with the upper pressing mold 42, the electric telescopic rod 41 pushes the upper pressing mold 42 to descend vertically, and in conjunction with the action of the lower pressing mold 24, the powder is pressed into tablets.
[0042] As the upper pressing mold 42 rises and resets, the operator turns on the first motor 71 again, driving the lower pressing mold 24 to rise vertically in the tablet pressing groove 23. At the same time, the lower pressing mold 24 causes the tablets to rise synchronously. After the lower pressing mold 24 rises to the initial height, the first motor 71 is turned off. At this time, the tablets are located on the upper surface of the rotating disk 21.
[0043] Subsequently, the operator starts the second motor 88, causing the drive shaft of the second motor 88 to rotate counterclockwise. The drive shaft of the second motor 88 causes the rotating shaft 83 to rotate. The rotating shaft 83, through the L-shaped connecting rod 84, causes the pusher plate 85 to revolve counterclockwise around the axis of the rotating shaft 83. After the pusher plate 85 rotates 180 degrees counterclockwise, it contacts the outer wall of the tablet. As the pusher plate 85 revolves counterclockwise, the tablet is pushed into the annular cavity 82. After the pusher plate 85 has rotated 360 degrees counterclockwise, the medicine is vertically aligned with the discharge hole 86, and the tablet is discharged outward through the discharge hole 86 and the discharge hopper 87.
[0044] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.
Claims
1. An adjustable rotary tablet press, characterized in that, It includes a chassis (1), a rotating unit (2), a drug dispensing unit (3), a tableting unit (4), and a powder suction unit (5), wherein the rotating unit (2), the drug dispensing unit (3), the tableting unit (4), and the powder suction unit (5) are assembled in the inner cavity of the chassis (1); The rotating unit (2) includes a rotating disk (21) and a rotating motor (22). The rotating motor (22) is installed in the inner cavity of the housing (1). The drive output end of the rotating motor (22) is fixedly connected to the axis of the lower surface of the rotating disk (21). The upper surface of the rotating disk (21) is provided with a plurality of tablet pressing grooves (23) arranged in a ring array. One end of each of the plurality of tablet pressing grooves (23) is provided with a pressing mold (24). The inner cavity of the machine box (1) and the rotating disk (21) are provided with an adjustment mechanism (6), and the inner cavity of the machine box (1) is provided with a discharge mechanism (8); The adjustment mechanism (6) includes several movable cavities (61), which are arranged in a ring array within the rotating disk (21). The movable cavities (61) are located below the tableting groove (23) and are connected to the tableting groove (23). An isolation disk (62) is fixedly provided at one end of each of the movable cavities (61). An internal threaded sleeve (63) is rotatably installed between the bottom wall of the movable cavity (61) and the isolation disk (62). A threaded rod (64) is rotatably installed on the inner wall of the internal threaded sleeve (63). One end of the threaded rod (64) is rotatably connected to the lower surface of the lower pressing mold (24). An arc-shaped seat (68) is fixedly provided at one end of each of the internal threaded sleeves (63). The inner cavity of the chassis (1) is fixedly provided with a first motor (71), and the drive output end of the first motor (71) is fixedly provided with a rotating rod (72). The inner cavity of the chassis (1) is rotatably provided with a rotating shaft (73). One end of the rotating rod (72) and one end of the rotating shaft (73) are both fixedly provided with bevel gears (74). The two bevel gears (74) mesh with each other. The other end of the rotating shaft (73) is fixedly provided with an arc block (75). The lower surface of several arc seats (68) is provided with arc grooves (76). The arc block (75) is in movable contact with the inner wall of one of the arc grooves (76).
2. The adjustable rotary tablet press as described in claim 1, characterized in that, Each of the several active cavities (61) has two guide grooves (65) on its sidewall. A guide block (66) is slidably provided at one end of the guide groove (65). An L-shaped connecting plate (67) is fixedly provided on one side of the guide block (66). One end of two adjacent L-shaped connecting plates (67) is fixedly connected to the lower surface of a pressing mold (24).
3. The adjustable rotary tablet press as described in claim 1, characterized in that, The inner cavity of the chassis (1) is fixedly provided with a support frame (7), the fixed end of the first motor (71) is fixedly connected to the inner wall of the support frame (7), and the rotating shaft (73) is rotatably connected to one end of the support frame (7).
4. An adjustable rotary tablet press as described in claim 1, characterized in that, The discharge mechanism (8) includes a discharge plate (81), which is fixedly installed in the inner cavity of the machine box (1). One side of the discharge plate (81) is in contact with the outer wall of the rotating disk (21), and an annular cavity (82) is opened on the upper surface of the discharge plate (81). A rotating shaft (83) is rotatably mounted at the center of the discharge plate (81). An L-shaped connecting rod (84) is fixedly provided at one end of the rotating shaft (83). A pusher plate (85) is fixedly provided at one end of the L-shaped connecting rod (84). The pusher plate (85) is in movable contact with the inner wall of the annular cavity (82).
5. An adjustable rotary tablet press as described in claim 4, characterized in that, The pusher plate (85) is arc-shaped.
6. An adjustable rotary tablet press as described in claim 4, characterized in that, The bottom wall of the annular cavity (82) is provided with a discharge hole (86), and the inner cavity of the machine box (1) is fixedly provided with a discharge bucket (87). The discharge bucket (87) is inclined and located below the discharge hole (86).
7. An adjustable rotary tablet press as described in claim 4, characterized in that, A second motor (88) is fixedly installed on the lower surface of the discharge plate (81), and the drive output end of the second motor (88) is fixedly connected to the other end of the rotating shaft (83).