Medicament tablet press

Abstract

The utility model discloses a medicament tablet press. The medicament tablet press comprises a conveying belt, a lower forming die, a pre-forming mechanism and a forming frame, wherein the lower forming die is arranged on the conveying belt; the pre-forming mechanism and the forming frame are arranged right above the conveying belt; on the basis of a conventional tablet compression molding technology, a set of structure for preforming a dry powder medicament is designed, so that along with synchronous rotation of two preforming rollers in the preforming mechanism, preforming grooves in the preforming rollers take out medicinal powder from the bottom of a medicinal powder hopper, and a sphere-like structure is formed through joint cooperation of the preforming grooves; the preforming groove is used for exerting certain acting force, the powder is kept in a sphere-like shape, and the powder falls into the lower die cavity, so that follow-up pressurizing and shaping are facilitated; by means of the pre-forming design, packaging can be effectively achieved, and metering of tablets entering the tablet forming cavity is uniform and stable.

Description

Technical Field

[0001] The utility model relates to the technical field of medicine processing, in particular to a medicine tablet press. Background Art

[0002] Tablet press is a very common industrial production equipment, especially in the pharmaceutical field. It is widely used as a basic equipment for pressing various granular raw materials into tablets. In the operation process of existing tablet presses, powder will always be scattered under high-frequency operation, resulting in waste of raw materials. Tablet pressing operation is a late step in drug production, and the dust generated may also pollute the production environment. Utility Model Content

[0003] The utility model aims to provide a medicine tablet press to solve the problem that conventional medicine tablet presses easily cause waste of raw materials and medicine dust.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] The utility model provides a pharmaceutical tablet press, comprising:

[0006] The conveyor belt has a lower support plate at the bottom of its upper layer, and the lower support plate is adjusted to rise and fall by a support telescopic cylinder installed on a ground bracket;

[0007] Lower forming molds are evenly spaced on the conveyor belt, and each lower forming mold has a lower mold cavity;

[0008] The preforming mechanism comprises a box body, in which two preforming rollers for use together and a powder hopper for providing powder to the gap between the two preforming rollers are arranged; the two preforming rollers are synchronously driven to rotate by a preforming motor; and corresponding preforming grooves are respectively provided on the two preforming rollers;

[0009] A forming frame is provided with a forming telescopic cylinder and an upper forming mold located at the lower end of the forming telescopic cylinder; the upper forming mold is located just above the conveyor belt, and an upper mold cavity used in conjunction with the lower mold cavity is provided on the upper forming mold.

[0010] Furthermore, the driving wheel shaft of the conveyor belt is arranged on a supporting frame, and is driven to rotate by a transfer driving motor.

[0011] Furthermore, the lower mold cavity and the upper mold cavity are both arc-shaped grooves;

[0012] A tablet collecting groove is arranged at the conveying tail end of the conveyor belt, and a brush roller is arranged above the tablet collecting groove for cleaning the tablets in the lower mold cavity.

[0013] Furthermore, the preforming mechanism includes a box body located above the lower forming die, and a guide plate is arranged in the box body and directly below the gap between the two preforming rollers.

[0014] Furthermore, a bulkhead vibrator is arranged on the outer wall of the powder hopper.

[0015] Furthermore, the preforming roller is symmetrically mounted in the preforming mechanism via a bracket;

[0016] The preforming roller is provided with preforming grooves corresponding to the positions and numbers of the upper and lower mold cavities of the lower molding die.

[0017] Furthermore, a plurality of position sensors for detecting the position of the lower molding die are arranged on the molding frame.

[0018] Compared with the prior art, the beneficial technical effects of the utility model are:

[0019] In this application, on the basis of conventional tablet compression molding, a set of structures for preforming dry powder medicines is designed, so that with the synchronous rotation of the two preforming rollers in the preforming mechanism, the preforming grooves thereon take out the powder from the bottom of the powder hopper, and form a spherical structure through the cooperation of the preforming grooves, so that the amount of medicine taken from the powder hopper is the same, and a certain force is applied by the preforming grooves to maintain a spherical shape, and fall into the lower mold cavity for subsequent pressurization and shaping; this preforming design can effectively package the dosage entering the tablet molding cavity uniformly and stably. This application reduces the problem of direct powder compression molding, which easily causes powder leakage, by preforming tablets. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 This is a schematic diagram of the main body of the pharmaceutical tablet press of the utility model;

[0022] Figure 2 It is a top view schematic diagram of the pharmaceutical tablet press of the utility model;

[0023] Figure 3 It is an enlarged schematic diagram of the preforming mechanism on the pharmaceutical tablet press of the utility model;

[0024] Figure 4 It is an enlarged schematic diagram of the forming mechanism on the pharmaceutical tablet press of the utility model;

[0025] Figure 5 This is a schematic diagram of the pharmaceutical tablet press equipped with a brush roller according to the utility model.

[0026] Explanation of the accompanying drawings: 1. Conveyor belt; 11. Transfer drive motor; 2. Lower forming mold; 21. Lower mold cavity; 22. Brush roller; 3. Preforming mechanism; 31. Guide plate; 4. Powder hopper; 41. Bulkhead vibrator; 5. Preforming roller; 51. Preforming motor; 52. Preforming groove; 53. Bracket; 6. Forming frame; 61. Position sensor; 7. Upper forming mold; 71. Guide rod; 72. Upper mold cavity; 8. Forming telescopic cylinder; 9. Lower support plate; 91. Support telescopic cylinder; 10. Tablet collecting groove. DETAILED DESCRIPTION

[0027] This embodiment discloses a pharmaceutical tablet press, comprising: a conveyor belt 1, a lower forming die 2 mounted on the conveyor belt 1, a preforming mechanism 3 and a forming frame 6 mounted just above the conveyor belt 1;

[0028] like Figure 1 As shown, in this embodiment, a lower support plate 9 is installed at the bottom of the upper layer of the conveyor belt 1, and the lower support plate 9 is adjusted and lifted by a support telescopic cylinder 91 installed on a ground bracket; wherein the support telescopic cylinder 91 is controlled to adjust and lift to support the lower molding die 2 below the upper molding die 7;

[0029] In this embodiment, the driving wheel shaft of the conveyor belt 1 is installed on a supporting frame, and is driven to rotate by a transfer driving motor 11.

[0030] The lower molding dies 2 are evenly spaced and installed on the conveyor belt 1, and a lower mold cavity 21 is provided in each of the lower molding dies 2. Figure 2 As shown, three lower mold cavities 21 are opened in each of the lower molding molds 2 .

[0031] The preforming mechanism 3 includes a box body, in which two cooperating preforming rollers 5 and a powder hopper 4 for providing powder to the gap between the two preforming rollers 5 are symmetrically installed through a bracket 53; the two preforming rollers 5 are synchronously driven to rotate by a preforming motor 51; corresponding preforming grooves 52 are respectively opened on the two preforming rollers 5; the preforming rollers 5 are opened with preforming grooves 52 corresponding to the positions and numbers of the upper and lower mold cavities 21 of the lower molding mold 2.

[0032] Tablet preforming principle:

[0033] As the two preforming rollers 5 rotate synchronously, the preforming grooves 52 thereon take out the powder from the bottom of the powder hopper 4, and cooperate with each other to form a spherical structure, so that the amount of medicine taken from the powder hopper 4 is the same, and a certain force is applied by the preforming grooves 52 to maintain a spherical shape and fall into the lower mold cavity 21 for subsequent pressurization and shaping.

[0034] A forming telescopic cylinder 8 and an upper forming mold 7 located at the lower end of the forming telescopic cylinder 8 are installed on the forming frame 6; the upper forming mold 7 is located directly above the conveyor belt 1, and an upper mold cavity 72 used in conjunction with the lower mold cavity 21 is opened on the upper forming mold 7; a plurality of position sensors 61 for detecting the position of the lower forming mold 2 are installed on the forming frame 6;

[0035] like Figure 1 The top plate of the forming frame 6 is provided with a plurality of sleeves, and four guide rods 71 ​​are vertically connected to the four corners of the upper forming mold 7, and the guide rods 71 ​​are inserted into the sleeves to realize the vertical lifting state of the upper forming mold 7;

[0036] Tablet forming principle:

[0037] The position sensor 61 is used to detect the position of the lower mold cavity 21 below the upper molding mold 7; the transfer drive motor 11 is controlled to pause, and the telescopic end of the molding telescopic cylinder 8 is started to descend to press the upper molding mold 7 downward; at the same time, the supporting telescopic cylinder 91 is started to adjust the lifting and lowering to support the lower molding mold 2 below the upper molding mold 7; thereby realizing the closing of the upper mold cavity 72 and the lower mold cavity 21, and pressing the preformed medicine balls in the lower mold cavity 21 into tablets.

[0038] In this embodiment, the lower die cavity 21 and the upper die cavity 72 are both arc-shaped grooves, so as to process oblate tablets.

[0039] like Figure 1 and Figure 5 As shown, a tablet collecting trough 10 is installed at the conveying tail end of the conveyor belt 1, and a brush roller 22 is installed above the tablet collecting trough 10 to cooperate in sweeping the tablets in the lower mold cavity 21, so that the brush roller 22 is used to assist in cleaning the tablets in the lower mold cavity 21.

[0040] In this embodiment, Figure 3 As shown, the preforming mechanism 3 includes a box located above the lower forming mold 2, and a guide plate 31 is installed in the box and just below the gap between the two preforming rollers 5; wherein the guide plate 31 is used to allow the preformed medicine ball to fall into the lower mold cavity 21 under the guidance of the guide plate 31; in order to facilitate the preformed medicine ball to fall accurately into the lower mold cavity 21, a position sensor can also be installed in the preforming mechanism 3, so that when the preformed medicine ball falls, the lower mold cavity 21 is just below the gap of the guide plate 31.

[0041] In this embodiment, a bulkhead vibrator 41 is installed on the outer wall of the powder hopper 4 to facilitate the powder in the powder hopper 4 to evenly fall to the gap between the two preforming rollers 5 .

[0042] The above embodiments are only descriptions of the preferred methods of the invention, and are not intended to limit the scope of the invention. Without departing from the design spirit of the invention, various modifications and improvements made to the technical solution of the invention by ordinary technicians in this field should fall within the protection scope of the claims of the invention.

Claims

1. A pharmaceutical tablet press, characterized in that: include: The conveyor belt (1) is provided with a lower support plate (9) at the bottom of the upper layer, and the lower support plate (9) is adjusted to rise and fall by a support telescopic cylinder (91) installed on a ground bracket; Lower molding dies (2) are evenly spaced and arranged on the conveyor belt (1), and each of the lower molding dies (2) is provided with a lower mold cavity (21); The preforming mechanism (3) comprises a box body, in which two preforming rollers (5) for use in conjunction with each other and a powder hopper (4) for providing powder to the gap between the two preforming rollers (5) are arranged; the two preforming rollers (5) are synchronously driven to rotate by a preforming motor (51); and corresponding preforming grooves (52) are respectively provided on the two preforming rollers (5); A forming frame (6) is provided with a forming telescopic cylinder (8) and an upper forming mold (7) located at the lower end of the forming telescopic cylinder (8); the upper forming mold (7) is located directly above the conveyor belt (1), and an upper mold cavity (72) for use with a lower mold cavity (21) is provided on the upper forming mold (7).

2. The pharmaceutical tablet press according to claim 1, characterized in that: The driving wheel shaft of the conveyor belt (1) is arranged on a supporting frame and is driven to rotate by a transfer driving motor (11).

3. The pharmaceutical tablet press according to claim 1, characterized in that: The lower mold cavity (21) and the upper mold cavity (72) are both arc-shaped grooves; A tablet collecting trough (10) is provided at the conveying tail end of the conveyor belt (1), and a brush roller (22) is provided above the tablet collecting trough (10) for cleaning tablets from the lower die cavity (21).

4. The pharmaceutical tablet press according to claim 1, characterized in that: The preforming mechanism (3) comprises a box body located above the lower forming die (2), and a guide plate (31) is arranged in the box body and directly below the gap between the two preforming rollers (5).

5. The pharmaceutical tablet press according to claim 1, characterized in that: A bulkhead vibrator (41) is provided on the outer wall of the medicine powder hopper (4).

6. The pharmaceutical tablet press according to claim 1, characterized in that: The preforming roller (5) is symmetrically mounted in the preforming mechanism (3) via a bracket (53); The preforming roller (5) is provided with preforming grooves (52) corresponding to the positions and number of the upper and lower mold cavities (21) of the lower molding die (2).

7. The pharmaceutical tablet press according to claim 1, characterized in that: A plurality of position sensors (61) for detecting the position of the lower molding die (2) are arranged on the molding frame (6).

Images