Finest powder filling device for feeder of tablet press

Abstract

The utility model discloses a finest powder filling device for a feeder of a tablet press, and relates to the technical field of pharmaceutical machinery. The device comprises a feeder lining strip, a sunk screw and a feeder base plate, the feeder lining strip is provided with a filling opening and a feeder lining strip screw fixing hole, the feeder lining strip is fixedly assembled to the filling opening of the feeder base plate through the sunk screw, the side wall of the filling opening is composed of a side wall inclined face and a side wall plane, and the side wall inclined face and the side wall plane are fixed. The filling opening is diverged outwards from the side wall plane along the side wall inclined plane, and the angle between the side wall inclined plane and the horizontal plane is 25-70 degrees. The rotary table solves the problems that when oral solid preparation materials containing a certain amount of finest powder are tableted, a large amount of finest powder in the materials is accumulated on the working face of the rotary table of the tablet press and leaks, and is reasonable in structural design, convenient to mount and dismount, capable of remarkably improving the yield of products and suitable for being widely popularized and used.

Description

Technical Field

[0001] The utility model relates to the technical field of pharmaceutical machinery, in particular to a finest powder filling device for a tablet press feeder. Background Art

[0002] Tablet presses are mainly used in the research of tablet technology in the pharmaceutical industry. Tablet presses press granules and powders into round, special-shaped tablets or tablets with words and symbols.

[0003] The operation process of the tablet press includes the steps of feeding, quantitative filling, pre-pressing, main pressing and forming, and tablet discharge. The upper and lower punches are driven by the punch plate to move from left to right along the upper and lower guide rails. When the punch moves to the feeding section, the punch of the lower punch and the inner hole of the middle mold form a cavity, and the material is filled into the cavity through the impeller of the feeder. When the cam gradually moves upward, the remaining material is pushed out of the inner hole of the middle mold to complete the quantitative material filling step. The filling chamber in the feeder has a filling impeller rotated by a driver for filling. The filling impeller has a plurality of stirring blades distributed in the filling area. When the filling impeller rotates, the stirring blade passes through the filling port of the middle mold of the rotating turntable below the feeder. The material falls into the filling port of the middle mold through the bottom opening of the feeder with the movement of the stirring blade to realize the filling of the material. The feeder is an important component of the material filling step in the tablet press, which determines the stability of material filling and directly affects the weight difference during product production.

[0004] For oral solid preparations, when the material contains a certain amount of the finest powder for tableting production, during the feeding process, the material is prone to large-scale accumulation and powder leakage on the tablet press turntable working surface, which is particularly obvious during the high-speed production of small-sized tablets. Usually, the method of reducing the gap between the tablet press feeder chassis and the tablet press turntable working surface is adopted to reduce the leakage of the finest powder material and improve the yield of product production. However, if the gap is adjusted too small, it is easy to cause damage to the core components of the tablet press punch. At the same time, when the proportion of the finest powder is too high, reducing the gap between the tablet press feeder chassis and the tablet press turntable working surface cannot solve the above problems. There will be more serious problems of powder leakage and material accumulation, resulting in reduced yield. In view of the above problems, the present utility model is specially proposed. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a tablet press feeder finest powder filling device, which solves the problem of large-scale accumulation and leakage of the finest powder in the material on the working surface of the tablet press turntable when tableting an oral solid preparation containing a certain amount of finest powder material. The structure is reasonably designed and easy to install and disassemble. While ensuring the stability of tablet weight, the yield of the product is significantly improved, and the utility model is suitable for wide promotion and use.

[0006] The utility model provides a tablet press feeder finest powder filling device, comprising a feeder lining strip, a countersunk screw, and a feeder chassis, wherein the feeder lining strip is provided with a filling port and a feeder lining strip screw fixing hole, the feeder chassis is provided with a filling port, the feeder lining strip is fixedly assembled to the filling port of the feeder chassis by a countersunk screw, the side wall of the filling port is composed of a side wall inclined surface and a side wall plane, the side wall inclined surface is fixed to the side wall plane, the filling port diverges from the side wall plane along the side wall inclined surface to the outside, and the angle between the side wall inclined surface and the horizontal plane is 25°-70°.

[0007] Preferably, the angle between the inclined surface of the filling port side wall and the horizontal plane is 25°-55°;

[0008] Preferably, the feeder liner strip is replaced individually according to the tablet press die specifications of the product being produced;

[0009] Preferably, the width of the lower edge of the filling port is 2 cm to 8 cm greater than the diameter of the circular tablet punch die installed in the tablet press;

[0010] Preferably, the width of the lower edge of the filling port is 3 cm to 12 cm greater than the longest diameter of the special-shaped tablet punching die installed in the tablet press;

[0011] Preferably, the bottom edge width of the filling port is 1-6 mm, and the bottom edge of the filling port is convex relative to the bottom surface of the feeder lining strip, and the convex height of the bottom edge of the filling port is 0.1-2 mm relative to the bottom surface of the feeder lining strip;

[0012] Preferably, the central axis position of the lower edge of the filling port coincides with the center position of the punch die of the tablet press turntable;

[0013] Preferably, the feeder lining strip is made of food-grade nylon or other food-grade contactable materials, more preferably made of food-grade nylon;

[0014] Preferably, the material hardness of the feeder lining strip is less than HRC28;

[0015] Preferably, the feeder lining strip is assembled to the feeder chassis filling port by countersunk screws.

[0016] The utility model adopts the above structure, which can bring the following beneficial effects:

[0017] (1) The utility model installs a feeder liner of a specific shape and size at the filling port of the feeder bottom plate, and the center axis position of the width of the lower edge of the filling port of the feeder liner coincides with the center position of the die of the tablet press turntable, thereby improving the filling effect of fine powder materials under low filling area conditions, achieving more accurate and sufficient material filling, reducing the filling area and thus reducing the escape area at the bottom of the material filling process during tableting, thereby improving the product yield when tableting oral solid preparations containing a certain amount of the finest powder materials.

[0018] (2) The angle of the side wall of the filling port of the feeder strip of the utility model to the horizontal plane is 25°-70°, especially 25°-55°. When the material contains a certain amount of finest powder for tableting, and the width of the lower edge of the filling port of the feeder strip is small, the filling fluidity of the material during filling is greatly increased, thereby reducing the accumulation of materials on the working surface of the tablet press turntable, so as to improve the product yield when tableting oral solid preparations containing finest powder materials.

[0019] (3) The bottom edge width of the filling port of the feeder liner strip of the utility model is 1 to 6 mm. Relative to the bottom surface of the feeder liner strip, the bottom edge of the filling port is convex, which further reduces the escape area of ​​the material during tableting and filling, greatly reduces the powder leakage rate of the feeder, and thus improves the yield of the product.

[0020] (4) The utility model installs a feeder liner strip at the filling port of the feeder bottom plate, preferably a feeder liner strip with a lower edge width of the filling port corresponding to the die size of the product variety, so as to reduce the escape area at the bottom of the material filling process during tableting, thereby reducing the loss of oral solid preparations containing the finest powder material on the working surface of the tablet press turntable during tableting, thereby improving the product yield.

[0021] (5) The feeder liner strip of the utility model can further reduce the gap between the feeder chassis of the tablet press and the turntable working surface from the original minimum of 0.05 mm to 0.03 mm, further reducing the overflow of powder.

[0022] (6) The lining strip of the feeder of the utility model is made of nylon material, which has high wear resistance and impact resistance. The hardness of the material is less than HRC28. Even if the gap is improperly adjusted and scratches occur, it is not easy to damage the working surface of the tablet press turntable, which greatly improves the safety and stability of the tablet press feeder's finest powder filling device.

[0023] (7) The utility model is complementary to the traditional tablet press and has the advantages of simple device, strong versatility, simple operation and low cost.

[0024] (8) The feeder liner strip used in the utility model can be processed by batch molding, has good replaceability, is not easy to contact with the working surface of the tablet press turntable, and can be used for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a top view structural schematic diagram of a finest powder filling device of a tablet press feeder of the utility model;

[0026] Figure 2 This is a bottom view structural schematic diagram of a finest powder filling device of a tablet press feeder of the utility model;

[0027] Figure 3This is a schematic diagram of the top view of the structure of a feeder lining strip of a tablet press feeder finest powder filling device of the utility model;

[0028] Figure 4 This is a schematic diagram of the structure of a feeder lining strip of a tablet press feeder finest powder filling device of the utility model, viewed from above;

[0029] Figure 5 This is a three-dimensional structural diagram of a tablet press feeder finest powder filling device of the utility model after the entire feeder is installed;

[0030] Figure 6 This is a left-side structural schematic diagram of a finest powder filling device of a tablet press feeder of the utility model;

[0031] Among them, the numbers in the figure represent: 1. feeder lining strip; 2. countersunk screw; 3. feeder chassis; 4. turntable working surface; 5. side wall plane; 6. lower edge of filling port; 7. bottom filling port; 8. tablet press turntable die; 9. side wall slope; 10. bottom edge of filling port; 11. filling port; 12. feeder lining strip screw fixing hole. DETAILED DESCRIPTION

[0032] In order to better understand the purpose, structure and function of the utility model, the following is a further detailed description of the finest powder filling device of the tablet press feeder of the utility model in combination with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] In the description of the present invention, it should be understood that the terms "center", "edge", "inside", "bottom", "below", "lowest surface", "central axis" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "assembly", "fixation", "fastening" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Embodiment 1:

[0036] The utility model discloses a tablet press feeder fine powder filling device, comprising a feeder lining strip 1, a countersunk screw 2, and a feeder chassis 3. The feeder lining strip 1 is provided with a filling port 11 and a feeder lining strip screw fixing hole 12. The feeder chassis 3 is provided with a filling port 7. The feeder lining strip 1 is fixedly assembled to the filling port 7 of the feeder chassis 3 by the countersunk screw 2. The side wall of the filling port 11 is composed of a side wall inclined surface 9 and a side wall plane 5. The side wall inclined surface 9 is fixed to the side wall plane 5. The filling port 11 radiates outward from the side wall plane 5 along the side wall inclined surface 9. The angle between the side wall inclined surface 9 and the horizontal plane is 25°-70°.

[0037] like Figure 1 As shown, it is a top view of a preferred implementation example of the feeder filling device of the utility model, and the device includes a feeder lining strip 1, a countersunk screw 2, and a feeder chassis 3.

[0038] like Figure 3 As shown, it is a top view of the feeder lining strip 1 of the utility model, and the feeder lining strip 1 is provided with a filling port 11 and a feeder lining strip screw fixing hole 12.

[0039] The feeder lining strip 1 is fixedly assembled at the position of the filling port 7 at the bottom of the feeder chassis 3 by countersunk screws 2 through the feeder lining strip screw fixing holes 12 .

[0040] The feeder chassis 3 needs to be equipped with a feeder lining strip 1 according to the die size of the product produced by the tablet press. If the product produced is a circular tablet die, the feeder chassis 3 should be equipped with a feeder lining strip 1 whose lower edge 6 width of the filling port 11 is greater than the diameter of the circular tablet die by 2cm-8cm. If the product produced is an irregular tablet die, the feeder chassis 3 should be equipped with a feeder lining strip 1 whose lower edge 6 width of the filling port 11 is greater than the longest diameter of the irregular tablet die by 3cm-12cm.

[0041] The bottom edge 10 of the filling port 11 has a width of 1 to 6 mm. Relative to the bottom surface of the feeder lining strip 1, the bottom edge 10 of the filling port 11 is convex, and the convex height is 0.1 to 2 mm.

[0042] The feeder lining strip 1 is made of food-grade nylon or other food-grade contactable materials, preferably food-grade nylon;

[0043] The feeder lining strip 1 has a material hardness less than HRC28 and is assembled to the bottom filling port 7 of the feeder chassis 3 by using a countersunk screw 2 .

[0044] The method for using the above feeder filling device specifically includes the following steps:

[0045] 1) Tablet press feeder assembly stage: confirm that the feeder lining strip 1 assembled on the feeder chassis 3 matches the size of the tablet die of the product to be produced by the tablet press. If the product to be produced by tableting is a round tablet, the feeder lining strip 1 should be assembled with a lower edge 6 width of the filling port 11 greater than the diameter of the round tablet die of 2cm-8cm. If the product to be produced by tableting is a special-shaped tablet, the feeder lining strip 1 should be assembled with a lower edge 6 width of the filling port 11 greater than the longest diameter of the special-shaped tablet die of 3cm-12cm. After confirming that the width of the lower edge 6 of the filling port 11 corresponding to the feeder lining strip 1 assembled on the feeder chassis 3 is correct, assemble the feeder chassis 3 and the feeder;

[0046] 2) Tablet press feeder installation stage: Place the feeder with the assembled feeder chassis 3 flat on the tablet press feeder platform, adjust the feeder platform to an appropriate horizontal height, adjust the feeder platform height by rotating the feeder platform base nut, rotate the feeder base nut clockwise to raise the feeder platform height, rotate the feeder base nut counterclockwise to lower the feeder platform height, and adjust the feeder platform height so that the lowest surface of the feeder chassis 3 equipped with the feeder lining strip 1 is 0.03 mm away from the tablet press turntable working surface 4, and at the same time check and confirm that the width center axis position of the lower edge 6 of the filling port 11 of the feeder lining strip 1 should coincide with the center position of the tablet press turntable die 8;

[0047] 3) Complete the installation of the remaining components of the tablet press equipment according to the installation steps of the tablet press equipment. After the installation is completed, check the accuracy of the installed components. After the installation of the whole machine is completed, manually turn the machine to check the equipment status. After confirming that there is no abnormality in the equipment status, the tablet press equipment can be started for production operation;

[0048] 4) After the production starts, the material enters the feeder, and the feeder drive shaft rotates to drive the material inside the feeder. The material is slowly filled through the filling port 11 of the feeder lining strip 1, so that the material is evenly filled into the middle mold hole. During this period, the angle between the side wall slope 9 of the filling port 11 of the feeder lining strip 1 and the bottom horizontal plane is 25°-70°, preferably 25-55°, which greatly improves the fluidity of the material during filling. The corresponding width of the lower edge 6 of the filling port 11 of the feeder lining strip 1 reduces the overflow of material powder, thereby avoiding the occurrence of material accumulation and powder leakage, and improving the product production yield.

[0049] It can be understood that the present invention is described through some embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention.

[0050] In addition, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope of protection of the present invention.

Claims

1. A tablet press feeder finest powder filling device, characterized in that: The invention comprises a feeder lining strip (1), a countersunk screw (2), and a feeder chassis (3). The feeder lining strip (1) is provided with a filling port (11) and a feeder lining strip screw fixing hole (12). The feeder chassis (3) is provided with a filling port (7). The feeder lining strip (1) is fixedly assembled to the filling port (7) of the feeder chassis (3) by the countersunk screw (2). The side wall of the filling port (11) is composed of a side wall inclined surface (9) and a side wall plane (5). The side wall inclined surface (9) is fixed to the side wall plane (5). The filling port (11) diverges from the side wall plane (5) along the side wall inclined surface (9) to the outside. The angle between the side wall inclined surface (9) and the horizontal plane is 25°-70°.

2. The finest powder filling device for a tablet press feeder according to claim 1, characterized in that: The angle between the side wall slope (9) and the horizontal plane is 25°-55°.

3. The finest powder filling device for a tablet press feeder according to claim 1, characterized in that: The width of the lower edge (6) of the filling port (11) is 2cm-8cm greater than the diameter of the circular tablet die installed in the tablet press, or the width of the lower edge (6) of the filling port (11) is 3cm-12cm greater than the longest diameter of the special-shaped tablet die installed in the tablet press.

4. The finest powder filling device for a tablet press feeder according to claim 1, characterized in that: The bottom edge (10) of the filling port (11) has a width of 1 to 6 mm, and relative to the bottom surface of the feeder lining strip (1), the bottom edge (10) of the filling port is convex.

5. The finest powder filling device for a tablet press feeder according to claim 4, characterized in that: The protruding height of the bottom edge (10) of the filling port (11) is 0.1-2 mm.

6. The finest powder filling device for a tablet press feeder according to claim 1, characterized in that: The feeder liner strip (1) is replaced individually according to the specifications of the tablet press die of the product being produced.

7. The finest powder filling device for a tablet press feeder according to claim 1, characterized in that: The central axis position of the lower edge (6) of the filling port (11) coincides with the center position of the tablet press turntable punch (8).

8. The finest powder filling device for a tablet press feeder according to claim 1, characterized in that: The feeder lining strip (1) is made of food-grade contactable material.

9. The finest powder filling device for a tablet press feeder according to claim 1, characterized in that: The material hardness of the feeder lining strip (1) is less than HRC28.

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