Tablet coating machine

Abstract

The utility model relates to the technical field of coating machines, in particular to a tablet coating machine which comprises a coating machine body, the side wall of the coating machine body is rotatably connected with a coating pan, the side wall of the coating pan is provided with a feeding port, the side wall of the coating machine body is fixedly connected with a supporting frame, and the top of one end of the supporting frame is fixedly connected with a fixing disc. A coating storage box is fixedly connected to the top of the fixing disc, a fixing block is fixedly connected to the top of one end of the supporting frame, a sliding rod is fixedly connected to the side wall of the fixing block, and a reciprocating spraying mechanism used for coating tablets more evenly is arranged on the outer wall of the sliding rod. Compared with the prior art, the problem that tablets are easily adhered due to excessive coatings due to uneven coating distribution is avoided, and the smoothness of the production process is improved. The surface defects and quality problems of the tablets are reduced, effective components in the coating liquid can be uniformly dispersed through the stirring mechanism, and it is ensured that the components of the liquid sprayed every time are consistent.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of coating machine especially relates to a tablet coating machine. BACKGROUND

[0002] Tablets are one of the most common dosage forms in the pharmaceutical industry. In order to improve the stability of tablets, control drug release, improve the appearance of tablets and mask the bad taste of drugs, coating technology has been widely used in tablet production process. As the key equipment to realize this process, tablet coating refers to coating one or more layers of film or coating on the surface of tablets. In recent years, it has been continuously developed in technology and process to meet the increasingly strict quality requirements and diversified market demand of the pharmaceutical industry.

[0003] A tablet coating device is disclosed in Chinese patent with patent publication number CN 209137373 U. The patent "includes a tablet coating machine body, a coating pot outer shell is welded and fixed on one side of the tablet coating machine body, a coating pot inner shell is arranged in the inside of the coating pot outer shell, a first rotating shaft is welded at the bottom of the coating pot inner shell, and the other end of the first rotating shaft is rotationally connected with the output end of the motor in the tablet coating machine body. By dividing the coating pot into an inner shell and an outer shell, the copper gas guide pipe surrounds the inner shell of the coating pot, and the gas inlet and outlet of the copper gas guide pipe respectively penetrate the inner side of the coating pot outer shell".

[0004] Although this device can increase the temperature between the outer shell and the inner shell by flowing the heated gas along the gas guide pipe, thereby drying the sugar coating wrapped in the coating pot inner shell, preventing the sugar syrup sprayed by the spray head from deviating from the direction of the tablet when the airflow directly dries the wrapped tablet, the device has fixed spraying coating liquid devices when in use. The fixed spray head can only cover a limited spraying range, which will lead to uneven distribution of the coating on the surface of the tablet, resulting in excessive coating in some areas and possibly insufficient coating in other areas, affecting the overall quality of the tablet. Uneven coating distribution can easily cause tablets to stick together due to excessive coating, affecting the smoothness of the production process. Meanwhile, the device cannot stir the coating liquid in the coating liquid container, which can cause the ingredients such as polymers, plasticizers and pigments to precipitate or agglomerate during the standing process, affecting the spraying effect and ensuring the uniformity and consistency of the coating liquid during the spraying process, leading to unstable coating quality and inconvenience in use. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model aims to provide a tablet coating machine to solve the problem of fixed spraying coating liquid devices when the device is in use, and the fixed spray head can only cover a limited spraying range, which will lead to uneven distribution of the coating on the surface of the tablet and the inability to stir the coating liquid in the coating liquid container.

[0006] In order to solve the above problems, the utility model provides a tablet coating machine, including the coating machine body, the lateral wall rotation of coating machine body is connected with the coating pot, the lateral wall of coating pot is provided with the feed inlet, the lateral wall fixed connection of coating machine body has the support frame, the one end top of support frame is fixedly connected with the fixed disc, the top fixed connection of fixed disc has the coating storage box, the one end top of support frame is fixedly connected with the fixed block, the lateral wall fixed connection of fixed block has the slide rod, the outer wall of slide rod is provided with reciprocating spraying mechanism for more uniform tablet coating, the inside of coating storage box is provided with stirring mechanism for stirring coating liquid in the inside of coating storage box.

[0007] Preferably, the reciprocating spraying mechanism includes a reciprocating block slidingly connected to the outer wall of the slide rod, one end of the reciprocating block is fixedly connected with an extrusion block, the feed inlet of the coating pot is fixedly connected with four push blocks at the bottom of the reciprocating block, the opposite sides of the extrusion block and the push block are arc-shaped, the outer part of the push block is in contact with the outer wall of the extrusion block, the outer part of the slide rod is sleeved with a telescopic spring, one end of the telescopic spring is fixedly connected to the slide rod, the other end of the telescopic spring is fixedly connected to the lateral wall of the reciprocating block, the bottom of the reciprocating block is fixedly connected with a coating spraying head, and the lateral wall of the coating spraying head is fixedly connected with the bottom of the coating storage box through a liquid delivery pipe.

[0008] Preferably, the stirring mechanism includes a stirring rod rotationally connected to the inside of the coating storage box, the outer wall of the stirring rod is fixedly connected with a plurality of equidistant and uniform stirring blades, the top of the coating storage box is fixedly connected with a torsion spring box, the top end of the stirring rod penetrates through the outer wall of the torsion spring box and is fixedly connected with a winding roller, the inside of the torsion spring box is fixedly connected with a vortex torsion spring, the other end of the vortex torsion spring is fixedly connected to the outer wall of the stirring rod, a pull rope is fixedly connected between one end of the reciprocating block and the outer wall of the winding roller, the bottom of the fixed disc is fixedly connected with a delivery pump, and one end of the liquid delivery pipe is connected with the delivery pump.

[0009] Preferably, the top of the fixed block is rotationally connected with a guide wheel, and the outer wall of the pull rope is in contact with the outer wall of the guide wheel.

[0010] Preferably, the top of the coating machine body is fixedly connected with a hot air pipe for blowing hot air, the shape of the hot air pipe is inverted "U" shape, and one end of the hot air pipe extends into the inside of the coating pot.

[0011] Preferably, the top of the coating storage box is fixedly connected with a liquid inlet for feeding.

[0012] Preferably, the bottom of the coating machine body is fixedly connected with support bases on both sides, threaded connections are arranged at both ends of the support bases, and anti-skid washers are fixedly connected to the bottom ends of the threaded connections.

[0013] Preferably, the inner wall of the coating pan is fixedly connected with a plurality of oppositely arranged and inclined tumbling plates.

[0014] Preferably, the opposite sides of the extrusion block and the push block are arc-shaped.

[0015] Preferably, the outer wall of the stirring blade is provided with a plurality of uniformly distributed flow holes.

[0016] The present application has the following beneficial effects:

[0017] 1. The tablet coating machine ensures that the coating liquid is uniformly distributed on the surface of the tablets through the reciprocating spraying mechanism, avoids the situation that some areas are coated too thick or too thin, can more effectively cover the tablets at the edge of the coating pan and the positions that are difficult to spray, improves the overall coating effect, reduces the variability of the coating on the surface of the tablets, ensures the uniformity of the coating thickness of each tablet, thereby ensuring the stability and consistency of the medicine, avoiding that uneven coating distribution easily leads to the adhesion between tablets due to too much coating, improving the smoothness of the production process, reducing the surface defects and quality problems of the tablets, and improving the yield.

[0018] 2. The tablet coating machine can keep the components in the coating liquid uniformly dispersed through the stirring mechanism, ensures the consistency of the liquid components sprayed each time, thereby ensuring the uniformity of the coating quality, can also prevent the phenomenon that some coating materials may agglomerate or condense when standing still, ensures the flowability and spraying effect of the coating liquid, and the leakage hole can also promote the circulation of the coating liquid, keeps the good flowability and consistency, increases the use flexibility of the equipment, and is convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are only the present application, and those skilled in the art can obtain other drawings according to these drawings without creating any creative labor.

[0020] Figure 1 It is a whole three-dimensional structure schematic diagram of the present application;

[0021] Figure 2 It is a three-dimensional structure schematic diagram of the reciprocating spraying mechanism of the present application;

[0022] Figure 3 It is a three-dimensional structure schematic diagram of the stirring mechanism of the present application;

[0023] Figure 4 For the utility model Figure 3 A place to enlarge the structure of the schematic diagram.

[0024] Marked as:

[0025] 1, coating machine body; 2, coating pot; 3, support frame; 4, fixed disc; 5, coating storage box; 6, fixed block; 7, slide bar; 8, reciprocating block; 9, extrusion block; 10, push block; 11, extension spring; 12, coating spray head; 13, infusion tube; 14, stirring rod; 15, stirring blade; 16, torsion spring box; 17, winding roller; 18, vortex torsion spring; 19, pull rope; 20, delivery pump; 21, guide wheel; 22, hot air pipe; 23, liquid inlet; 24, support base; 25, rotating threaded rod; 26, non-slip gasket; 27, tumbling plate. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the following will be further described in detail in combination with specific embodiments.

[0027] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the utility model should be understood as the usual meaning by those skilled in the art to which the utility model belongs. The "first", "second" and similar words used in the utility model do not represent any order, quantity or importance, but are only used to distinguish different components. "Include" or "contain" and similar words mean that the elements or objects before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connection" or "connected" and similar words are not limited to physical or mechanical connection, but can include electrical connection, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to represent relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0028] As Figures 1 to 4As shown, a tablet coating machine, including coating machine body 1, the side wall of coating machine body 1 is rotatably connected with coating pot 2, the side wall of coating pot 2 is provided with feeding port, the side wall of coating machine body 1 is fixedly connected with support frame 3, one end of the top of support frame 3 is fixedly connected with fixed disc 4, the top of fixed disc 4 is fixedly connected with coating storage box 5, the top of coating storage box 5 is fixedly connected with liquid inlet 23 for feeding, one end of the top of support frame 3 is fixedly connected with fixed block 6, the side wall of fixed block 6 is fixedly connected with slide rod 7, the outer wall of slide rod 7 is provided with reciprocating spraying mechanism for more uniform tablet coating, the inside of coating storage box 5 is provided with stirring mechanism for stirring coating liquid inside coating storage box 5.

[0029] Further, with reference to the accompanying drawings Figure 1 And Figure 2 As shown, the reciprocating spraying mechanism includes reciprocating block 8 slidingly connected to the outer wall of slide rod 7, one end of the bottom of reciprocating block 8 is fixedly connected with extrusion block 9, the bottom of reciprocating block 8 is fixedly connected with push block 10, the number of push block 10 is four, the outside of push block 10 and the outer wall of extrusion block 9 are in contact, the opposite sides of extrusion block 9 and push block 10 are arc-shaped, the outside of slide rod 7 is sleeved with expansion spring 11, one end of expansion spring 11 is fixedly connected to slide rod 7, the other end of expansion spring 11 is fixedly connected to the side wall of reciprocating block 8, the bottom of reciprocating block 8 is fixedly connected with coating spraying head 12, the side wall of coating spraying head 12 and the bottom of coating storage box 5 are fixedly connected with liquid delivery pipe 13;

[0030] When the reciprocating spraying mechanism, first put the tablets need to be coated into the coating pan 2, and then turn on the power, start the coating machine body 1, the coating machine body 1 drive coating pan 2 rotation, when the coating pan 2 will drive the internal tablets to roll, at this time start the delivery pump 20, the delivery pump 20 through the infusion tube 13 coating layer storage box 5 inside the coating liquid delivery into the coating spraying head 12, then sprayed on the tablets in the rolling, when the coating pan 2 will also drive the push block 10 rotation, the opposite sides of the extrusion block 9 and push block 10 are arc-shaped, the push block 10 side wall is arc-shaped to facilitate extrusion extrusion block 9, the number of push block 10 is four, then the push block 10 will extrude the extrusion block 9, the extrusion block 9 is extruded to drive the reciprocating block 8 to slide on the outer wall of the slide rod 7, when the reciprocating block 8 slides will extrude the other side of the extension spring 11, then the reciprocating block 8 will also drive the coating spraying head 12 to reciprocate left and right, to ensure that the coating liquid is evenly distributed on the surface of the tablets, to avoid some areas of the coating is too thick or too thin, can more effectively cover the tablets and difficult to spray the edge of the coating pan 2, improve the overall coating effect, also reduce the variability of the coating on the surface of the tablet, to ensure that the coating thickness of each tablet is consistent, so as to ensure the stability and consistency of the drug, avoid uneven coating distribution easily lead to tablets between the coating too much and stick together, improve the smoothness of the production process. Reduce the surface defects and quality problems of tablets, improve the yield.

[0031] Further, with reference to the accompanying drawings Figure 3 And Figure 4 As shown, the stirring mechanism includes a stirring rod 14 rotatably connected inside the coating storage box 5, a plurality of equidistant uniform stirring blades 15 are fixedly connected to the outer wall of the stirring rod 14, a plurality of uniformly distributed flow holes are formed in the outer wall of the stirring blade 15, a torsional spring box 16 is fixedly connected to the top of the coating storage box 5, a winding roller 17 is fixedly connected to the top end of the stirring rod 14 penetrating the outer wall of the torsional spring box 16, a vortex torsional spring 18 is fixedly connected inside the torsional spring box 16, the other end of the vortex torsional spring 18 is fixedly connected to the outer wall of the stirring rod 14, a pull rope 19 is fixedly connected between one end of the reciprocating block 8 and the outer wall of the winding roller 17, a delivery pump 20 is fixedly connected to the bottom of the fixed disc 4, one end of the infusion tube 13 is connected with the delivery pump 20;

[0032] When the stirring mechanism is in use, firstly, when the reciprocating block 8 in the reciprocating spraying mechanism is in motion, it will pull the pull rope 19, then one end of the pull rope 19 will pull the winding roller 17 to rotate, when the winding roller 17 rotates, it will drive the bottom stirring rod 14 to rotate, when the bottom stirring rod 14 rotates, it will drive the vortex torsional spring 18 to rotate and contract, at the same time, the stirring rod 14 will also drive the stirring blade 15 to rotate, so that the coating liquid in the coating storage box 5 can be stirred, after stirring for a few circles, the pull rope 19 is no longer pulled by the reciprocating block 8, the vortex torsional spring 18 starts to release its own spring force to drive the stirring rod 14 to rotate in the opposite direction, then the stirring rod 14 will again drive the stirring blade 15 and the leakage hole to rotate, thereby the coating liquid can be stirred again, at the same time, the leakage hole can also promote the circulation of the coating liquid, so that it maintains good fluidity and consistency, through the stirring mechanism, the effective components (such as polymers, plasticizers, pigments, etc.) in the coating liquid can be uniformly dispersed, ensuring that the liquid components sprayed each time are consistent, thereby ensuring the uniformity of the coating quality, at the same time, the stirring can also prevent some coating materials from caking or condensing when standing still, ensuring the fluidity of the coating liquid and the spraying effect, increasing the use flexibility.

[0033] Further, referring to the accompanying drawings Figure 3 illustrated, the top of the fixed block 6 is rotationally connected with a guide wheel 21, the outer wall of the pull rope 19 is in contact with the outer wall of the guide wheel 21, the guide wheel 21 plays a guiding role for the pull rope 19, facilitating the pull rope 19 to drive the stirring mechanism to operate.

[0034] Further, referring to the accompanying drawings Figure 1 illustrated, the top of the coating machine body 1 is fixedly connected with a hot air pipe 22 for blowing hot air, the shape of the hot air pipe 22 is inverted "U" shape, one end of the hot air pipe 22 extends into the inside of the coating pot 2, through the action of the hot air pipe 22, hot air is blown into the coating pot 2, so that the surface of the coated tablets is uniformly dried.

[0035] Further, referring to the accompanying drawings Figure 1 illustrated, the bottom of the coating machine body 1 is fixedly connected with a support base 24 on both sides, the both ends of the support base 24 are threadedly connected with a rotating threaded rod 25, the bottom end of the rotating threaded rod 25 is fixedly connected with an anti-skid pad 26, by rotating the rotating threaded rod 25 to drive the anti-skid pad 26 to move upward or downward, the height position of one end of the support base 24 is adjusted, avoiding the whole coating machine body 1 from vibrating when operating due to the lower or higher height of one end of the support base 24, affecting the tablet coating.

[0036] Further, referring to the accompanying drawings Figure 2As shown, the inner wall of the coating pan 2 is fixedly connected with a plurality of oppositely arranged and inclined tumbling plates 27, which play a further tumbling role on the tablets in the coating pan 2 through the winding roller 17, and increase the uniformity of the coating.

[0037] Those skilled in the art will understand that the above discussion of any of the embodiments is merely exemplary in nature and is not intended to imply that the scope of the present application, including the claims, is limited to these examples; the above embodiments or technical features among different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above, which are not provided in details for the sake of brevity.

[0038] The present application is intended to cover all such alternatives, modifications, and variations as fall within the broad scope of the appended claims. Accordingly, any and all such alternatives, modifications and variations are intended to be encompassed by the appended claims.

Claims

1. A tablet coating machine, comprising a coating machine body (1), a coating kettle (2) is rotatably connected to the side wall of the coating machine body (1), and a feeding port is arranged on the side wall of the coating kettle (2), characterized in that: The side wall of the coating machine body (1) is fixedly connected with a support frame (3), one end top of the support frame (3) is fixedly connected with a fixed disc (4), the top of the fixed disc (4) is fixedly connected with a coating storage box (5), the other end top of the support frame (3) is fixedly connected with a fixed block (6), the side wall of the fixed block (6) is fixedly connected with a sliding rod (7), the outer wall of the sliding rod (7) is provided with a reciprocating spraying mechanism for spraying tablets, the inside of the coating storage box (5) is provided with a stirring mechanism for stirring the coating liquid inside the coating storage box (5).

2. A tablet coating machine according to claim 1, characterized in that The reciprocating spraying mechanism comprises a reciprocating block (8) slidingly connected to the outer wall of the sliding rod (7), one end bottom of the reciprocating block (8) is fixedly connected with an extrusion block (9), the bottom of the coating kettle (2) is fixedly connected with a push block (10) close to the reciprocating block (8), the number of the push block (10) is four, the opposite sides of the extrusion block (9) and the push block (10) are arc-shaped, the outer part of the push block (10) is in contact with the outer wall of the extrusion block (9), the outer part of the sliding rod (7) is sleeved with a telescopic spring (11), one end of the telescopic spring (11) is fixedly connected to the sliding rod (7), the other end of the telescopic spring (11) is fixedly connected to the side wall of the reciprocating block (8), the bottom of the reciprocating block (8) is fixedly connected with a coating spraying head (12), the side wall of the coating spraying head (12) and the bottom of the coating storage box (5) are fixedly connected with a liquid conveying pipe (13).

3. A tablet coater according to claim 2, wherein The stirring mechanism comprises a stirring rod (14) rotatably connected inside the coating storage box (5), a plurality of equidistant uniform stirring blades (15) are fixedly connected to the outer wall of the stirring rod (14), a torsional spring box (16) is fixedly connected to the top of the coating storage box (5), a winding roller (17) is fixedly connected to the top end of the stirring rod (14) penetrating through the outer wall of the torsional spring box (16), a vortex torsional spring (18) is fixedly connected inside the torsional spring box (16), the other end of the vortex torsional spring (18) is fixedly connected to the outer wall of the stirring rod (14), a pull rope (19) is fixedly connected between one end of the reciprocating block (8) and the outer wall of the winding roller (17), a delivery pump (20) is fixedly connected to the bottom of the fixed disc (4), one end of the liquid conveying pipe (13) is connected with the delivery pump (20).

4. A tablet coater according to claim 3, wherein The top of the fixed block (6) is rotatably connected with a guide wheel (21), the outer wall of the pull rope (19) is in contact with the outer wall of the guide wheel (21).

5. A tablet coating machine according to claim 1, wherein The top of the coating machine body (1) is fixedly connected with a hot air pipe (22) for blowing hot air, the shape of the hot air pipe (22) is inverted U-shaped, one end of the hot air pipe (22) extends into the inside of the coating kettle (2).

6. A tablet coating machine according to claim 1, characterized in that The top of the coating storage box (5) is fixedly connected with a liquid inlet (23) for feeding. The top of the coating storage box (5) is fixedly connected with a liquid inlet (23) for feeding.

7. A tablet coating machine according to claim 1, wherein Both sides of the bottom of the coating machine body (1) are fixedly connected with support bases (24), threaded connections of both ends of the support bases (24) are provided with rotating threaded rods (25), and bottom ends of the rotating threaded rods (25) are fixedly connected with anti-skid washers (26).

8. A tablet coating machine according to claim 1, characterized in that The inner wall of the coating pan (2) is fixedly connected with a plurality of oppositely arranged and inclined tumbling plates (27).

9. A tablet coating machine according to claim 3, wherein The outer wall of the stirring blade (15) is provided with a plurality of uniformly distributed flow-through holes.

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