Waste powder removing device and rotary tablet press

Abstract

The utility model discloses a waste powder rejecting device and a rotary tablet press, and relates to the technical field of tablet presses, the waste powder rejecting device comprises a rack, a stand column is arranged on the rack, and a fixing plate is arranged on the side face of the periphery of the stand column; the adjusting support is connected with the fixing plate, and a quick-release plate is arranged on the adjusting support and connected with the gas conveying pipe set; a dust collection port is formed in the end part of the dust collection block, and the dust collection port is communicated with the first end of the air delivery pipe group; the vacuum generator is connected with the second end of the air conveying pipe set. According to the waste powder removing device and the rotary tablet press, the technical problems that an existing waste powder removing device uses compressed air as power, the compressed air is blown down to a waste tablet channel to flow out, however, waste powder is scattered, part of residual waste powder enters a feeding boot of a first layer of materials again along with a mold, and color mixing is caused are solved; the vacuum generator provides suction force for the dust suction block through the air conveying pipe set, the dust suction block sucks waste powder thoroughly through the dust suction opening, the color mixing phenomenon cannot be caused, and the yield of tablet production is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of tablet presses, in particular to a waste powder rejecting device and a rotary tablet press. Background Art

[0002] In the production process of multi-layer tablets, after the previous layer of tablets is sampled separately, the subsequent filling materials cannot be pressed and formed, and become waste powder. Such waste powder cannot be pressed and formed and is scattered when rejecting, causing dust to be blown away and multi-layer tablets to mix colors. When the rotary tablet press produces three-layer tablets, three materials are required for the production of three-layer tablets. First, the first material is filled into the middle die hole through the first feed shoe, passes through the first pre-pressing wheel, and is compressed once by the pre-pressing wheel to discharge the gas in the material. Then the second material is filled into the middle die hole through the second feed shoe, passes through the second pre-pressing wheel, and is compressed once by the second pre-pressing wheel. Then the third material is filled into the middle die hole through the second feed shoe, passes through the main pressing wheel, and is compressed once by the main pressing wheel. When the formed tablets reach the position of the tablet scraper, the qualified tablets will be intercepted by the tablet scraper and flow into the qualified tablet channel in the tablet discharge chute as the turret rotates. The waste tablets will be rejected by the waste rejection device on the tablet scraper and flow into the waste tablet channel in the discharge chute. During the entire multi-layer film production process, it is necessary to avoid the problem of contact and mixing of several materials, that is, the color mixing problem in the production of multi-layer films.

[0003] At present, in the field of multi-layer tablet production, in order to confirm the tablet weight, it is necessary to sample and weigh the first few layers of tablets separately. After the first layer of tablets is sampled, the tablet in the middle die hole will eventually lack a layer of material, and the remaining material will become waste powder. The lack of a layer of material will cause the weight to be low, and the tablet cannot be formed after pressing. When such waste powder reaches the tablet scraper position of the tablet press, the existing waste powder removal device uses compressed air as power to blow it down to the waste tablet channel to flow out. However, the waste powder will be broken up, causing dust to fly, and some of the remaining waste powder will re-enter the feed boot of the first layer of material with the mold, causing color mixing. Therefore, a waste powder removal device and a rotary tablet press are proposed to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a waste powder removal device, which solves the problem that the existing waste powder removal device uses compressed air as power to blow the waste powder down to the waste sheet channel for outflow, but the waste powder will be broken up, causing dust to fly, and some of the residual waste powder re-enters the feed boot of the first layer of material with the mold, causing color mixing technical problems.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a waste powder removal device, comprising:

[0006] A frame for mounting the stamping die;

[0007] The column is arranged on the frame, and a fixing plate is provided on the outer peripheral side of the column;

[0008] The adjusting bracket is connected to the fixing plate. A quick-release plate is arranged on the adjusting bracket, and the quick-release plate is connected to the air delivery pipe group;

[0009] The dust suction block is arranged on the quick-release plate. A dust suction port is provided at the end of the dust suction block, and the dust suction port communicates with the first end of the air delivery pipe group;

[0010] The vacuum generator is connected to the second end of the air delivery pipe group, and the vacuum generator is used to provide a negative pressure acting force to the air delivery pipe group.

[0011] Preferably, a scraper is arranged on the frame, and the scraper is arranged on one side of the dust suction block, and the scraper is used to intercept the finished tablets.

[0012] Preferably, a third discharge chute is arranged below the scraper, and the third discharge chute is used to convey the finished tablets to the qualified product container.

[0013] Preferably, the air delivery pipe group includes: a first hose, the first hose is connected to a reducing joint, the reducing joint is connected to a second hose, the second hose is connected to a dust suction pipe, and the dust suction pipe is connected to the dust suction block.

[0014] Preferably, a fixed handle is arranged on the adjusting bracket, the fixed handle is connected to the quick-release plate, and the quick-release plate is connected to the dust suction block.

[0015] Preferably, a plurality of kidney-shaped holes are arranged on the adjusting bracket, and a plurality of positioning holes are arranged on the fixing plate, and each kidney-shaped hole is connected to one of the positioning holes through a bolt.

[0016] Preferably, a scale is arranged on the side surface of the adjusting bracket, and a pointer adapted to the scale is arranged on the side surface of the fixing plate.

[0017] Preferably, the vacuum generator is connected to an electromagnetic valve, and the electromagnetic valve is used to control the start and stop of the vacuum generator.

[0018] Preferably, the distance between the bottom surface of the dust suction block and the top surface of the stamping die is greater than the thickness of the finished tablets.

[0019] A rotary tablet press includes the waste powder removal device according to any one of the above.

[0020] Compared with the above background art, a waste powder removal device provided by the present utility model has the following beneficial effects:

[0021] (1)The utility model generates negative pressure through a vacuum generator. The vacuum generator provides suction force to the dust suction block through an air delivery pipe group. The dust suction block sucks the waste powder on the surface of the stamping die and in the middle die hole through the dust suction port. The waste powder is directly sucked clean by the dust suction block, and the situation of the waste powder being scattered to cause dust flying will not occur. Furthermore, the residual waste powder will not re-enter the feeding boot of the first-layer material along with the die, resulting in the phenomenon of color mixing, effectively improving the qualified rate of tablet production.

[0022] (2)The utility model flexibly adjusts the distance between the bottom surface of the dust suction block and the top surface of the stamping die by adjusting the height of the adjusting bracket relative to the fixed plate, so that the dust suction port can be as close as possible to the top surface of the stamping die, ensuring that the suction force can suck away the waste powder after sampling. At the same time, the height of the dust suction block will not touch the finished tablets and will not affect the passage of the tablets, so that the overall waste powder removal device is adapted to tablets of different thicknesses, with better practicability. Brief Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0024] Figure 1 It is a three-dimensional structure diagram of the waste powder removal device provided by the embodiment of the present utility model;

[0025] Figure 2 It is a front view of the waste powder removal device provided by the embodiment of the present utility model;

[0026] Figure 3 It is a side view of the waste powder removal device provided by the embodiment of the present utility model;

[0027] Figure 4 It is a sectional schematic diagram of the waste powder removal device provided by the embodiment of the present utility model.

[0028] Specifically, 1 - frame; 2 - stamping die; 3 - column; 4 - fixed plate; 5 - adjusting bracket; 6 - quick-release plate; 7 - air delivery pipe group; 701 - first hose; 702 - reducing joint; 703 - second hose; 704 - dust suction pipe; 8 - dust suction block; 801 - dust suction port; 9 - vacuum generator; 10 - scraper; 11 - third discharge chute; 12 - fixed handle; 13 - waist-shaped hole; 14 - positioning hole; 15 - scale; 16 - pointer; 17 - first feeding boot; 18 - first discharge chute; 19 - second feeding boot; 20 - second discharge chute; 21 - third feeding boot. Detailed Embodiment

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0030] In order to enable those skilled in the art in this technical field to better understand the solution of the present utility model, the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0031] As Figure 1 and Figure 4 shown, to achieve the above object, the present utility model provides a waste powder removal device, including: a column 3, an adjustment bracket 5, an adjustment bracket 5, and a vacuum generator 9 provided on a frame 1. The frame 1 is used to install a stamping die 2, and the stamping die 2 can be driven to rotate on the frame 1 to complete the stamping of tablets.

[0032] A column 3 is provided on the frame 1. A fixing plate 4 is provided on the outer peripheral side of the column 3. The fixing plate 4 is connected to the adjustment bracket 5. A quick-release plate 6 is provided on the adjustment bracket 5. The quick-release plate 6 is connected to an air pipe group 7;

[0033] A dust suction block 8 is provided on the quick-release plate 6. A dust suction port 801 is provided at the front end of the dust suction block 8. Specifically, the dust suction port 801 is provided on the bottom surface of the dust suction block 8 to ensure that the dust suction port 801 can directly suck the materials in the middle die holes on the stamping die 2. The dust suction port 801 communicates with the lower end of the air pipe group 7. The upper end of the air pipe group 7 is connected to the vacuum generator 9. The vacuum generator 9 is the source of vacuum generation, and uses compressed air as the power to generate negative pressure, that is, the vacuum generator 9 is used to provide a negative pressure acting force to the air pipe group 7. Preferably, the vacuum generator 9 is connected to an electromagnetic valve (not shown in the figure), and the start and stop of the vacuum generator 9 are controlled by the electromagnetic valve. Of course, the vacuum generator can also be controlled to start and stop in other ways, and the control method for the start and stop of the vacuum generator 9 is not specifically limited.

[0034] Specifically, the vacuum generator 9 generates negative pressure, provides a suction force to the dust suction block 8 through the air pipe group 7, and the dust suction block 8 sucks the waste powder on the surface of the stamping die 2 and in the middle die holes through the dust suction port 801, and the waste powder is directly sucked clean through the dust suction block 8.

[0035] It should be noted that the stamping die 2 is provided with a middle die hole for filling materials. Along the rotation direction of the stamping die 2, a first feeding shoe 17 and a first discharge chute 18, a second feeding shoe 19 and a second discharge chute 20, and a third feeding shoe 21 are successively arranged on the frame 1. The first feeding shoe 17 is used for filling the first layer of materials, and the first discharge chute 18 is used for discharging the tablets sampled from the first layer; the second feeding shoe 19 is used for filling the second layer of materials, and the second discharge chute 20 is used for discharging the tablets sampled from the second layer; the third feeding shoe 21 is used for filling the third layer of materials. The middle die hole successively passes through the first feeding shoe 17, the first discharge chute 18, the second feeding shoe 19, the second discharge chute 20, the third feeding shoe 21 and the dust suction block 8, that is, the dust suction block 8 is arranged in the next process of the third feeding shoe 21.

[0036] Among them, the adjusting bracket 5 can move relatively on the fixed plate 4. By adjusting the height of the adjusting bracket 5 relative to the fixed plate 4, the distance between the bottom surface of the dust suction block 8 and the top surface of the stamping die 2 can be flexibly adjusted, so that the dust suction port 801 can be as close as possible to the top surface of the stamping die 2, ensuring that the suction force can suck away the waste powder after sampling. At the same time, the height of the dust suction block 8 will not touch the finished tablets and will not affect the passage of the tablets.

[0037] During use, the vacuum generator 9 generates negative pressure and provides suction force to the dust suction block 8 through the air pipe group 7. The dust suction block 8 sucks the waste powder on the surface of the stamping die 2 and in the middle die hole through the dust suction port 801. The waste powder is directly sucked clean by the dust suction block 8, and there will be no phenomenon that the remaining waste powder re-enters the feeding shoe of the first layer of materials with the die, causing color mixing, thereby improving the qualified rate of tablet production.

[0038] It should be noted that for the production of multi-layer tablets, the suction force generated by the vacuum dust collector is very important and is an important guarantee for preventing color mixing. The vacuum generator 9 directly provides suction force to the dust suction block 8 through the air pipe group 7, without occupying the suction force of the vacuum dust collector in the tablet press. The suction force generated by the vacuum generator 9 will not be affected by the vacuum dust collector, effectively avoiding the risk that the suction force generated by the vacuum generator 9 decreases and the waste powder cannot be completely sucked, thus avoiding the risk of color mixing caused.

[0039] A scraper 10 is arranged on the frame 1, and the scraper 10 is arranged on the lower side of the dust suction block 8. While the dust suction block 8 sucks the waste powder on the surface of the stamping die 2, the scraper 10 intercepts the finished tablets to avoid re-entering the feeding shoe of the first layer of materials. In addition, a third discharge chute 11 is arranged below the scraper 10, and the finished tablets are conveyed to the qualified product container through the third discharge chute 11 to complete the production of the finished tablets.

[0040] Such as Figure 2 and Figure 3As shown in the figure, the gas pipeline group 7 includes: a first hose 701. Preferably, the outer diameter of the first hose 701 is 2 inches. The first hose 701 is connected to a reducing joint 702. Among them, the reducing joint 702 is fixed on the frame 1. One end of the reducing joint 702 has an inner diameter of 2 inches, and the other end has an inner diameter of 1.5 inches. The reducing joint 702 is connected to a second hose 703. The outer diameter of the second hose 703 is 1.5 inches. The second hose 703 is connected to a dust suction pipe 704. The dust suction pipe 704 is connected to a dust suction block 8. The inside of the dust suction block 8 is communicated with the dust suction pipe 704. Specifically, a vacuum generator 9 generates negative pressure, and successively sucks the inside of the dust suction block 8 through the first hose 701, the reducing joint 702, the second hose 703, and the dust suction pipe 704, providing suction force for the dust suction block 8. The dust suction block 8 sucks the waste powder on the surface of the stamping die 2 through the dust suction port 801. Preferably, both the first hose 701 and the second hose 703 are made of rubber material and have a certain elastic deformation function. They are not easily broken or cracked under long-term repeated bending, and have a longer service life. Of course, they can also be made of polyvinyl chloride material. The specific materials of the first hose 701 and the second hose 703 are not limited. The main purpose is that the first hose 701 and the second hose 703 can change their own structural states according to the positions of the dust suction block 8 or the vacuum generator 9.

[0041] A fixed handle 12 is arranged on the adjusting bracket 5. The fixed handle 12 is threadedly connected to the quick-release plate 6. The top surface of the quick-release plate 6 is connected to the dust suction block 8, and the bottom surface of the quick-release plate 6 is connected to the dust suction pipe 704. And through holes are provided on the surface of the quick-release plate 6 for communicating the inside of the dust suction block 8 and the dust suction pipe 704. Specifically, the dust suction block 8 is arranged on the top surface of the quick-release plate 6. The fixed handle 12 passes through the quick-release plate 6 and is threadedly connected to the adjusting bracket 5, thereby fixing the dust suction pipe 704 on the adjusting bracket 5. By screwing the fixed handle 12, the quick-release function of the quick-release plate 6 and the adjusting bracket 5 can be realized, which is convenient for the splicing and assembly of the entire waste powder removal device.

[0042] In addition, a number of kidney-shaped holes 13 are arranged on the adjusting bracket 5, and a number of positioning holes 14 are arranged on the fixing plate 4. Each kidney-shaped hole 13 is connected to a positioning hole 14 through a bolt. The adjusting bracket 5 is connected to the fixing frame by passing a bolt and a positioning pin through the positioning hole 14 and the kidney-shaped hole 13. When the bolt and the positioning pin pass through the positioning hole 14 and the kidney-shaped hole 13, the height position of the positioning hole 14 relative to the kidney-shaped hole 13 can be flexibly adjusted, so as to control the relative height of the adjusting bracket 5 on the fixing frame according to the set thickness of the finished tablets, ensuring that the dust suction port 801 can be as close as possible to the top surface of the stamping die 2, and the distance between the bottom surface of the dust suction block 8 and the top surface of the stamping die 2 is greater than the thickness of the finished tablets, ensuring that the waste powder after sampling can be sucked away by the suction force while the height of the dust suction block 8 will not touch the finished tablets and does not affect the passing of the tablets.

[0043] In an embodiment of the present utility model, a scale 15 is provided on the side surface of the adjusting bracket 5, and a pointer 16 adapted to the scale 15 is provided on the side surface of the fixing plate 4. The operator can accurately control the relative height of the adjusting bracket 5 on the fixing frame by observing the position where the pointer 16 points to the scale line of the scale 15, and further accurately control the distance between the bottom surface of the dust suction block 8 and the top surface of the stamping die 2.

[0044] When the present utility model is in use, during the production process of three-layer tablets, the first layer of materials is filled into the middle die holes through the first feeding boot 17, the tablets sampled from the first layer are discharged through the first discharge chute 18, the second layer of materials is filled into the middle die holes through the second feeding boot 19, the tablets sampled from the second layer are discharged through the second discharge chute 20, and the third layer of materials is filled into the middle die holes through the third feeding boot 21. Since the first layer or the second layer of materials is sampled and discharged, the third layer of materials cannot be formed under the same pressing force and remains in a powder state. The solenoid valve controls the vacuum generator 9 to be turned on, and the vacuum generator 9 generates negative pressure. The inside of the dust suction block 8 is sucked through the first hose 701, the reducing joint 702, the second hose 703 and the dust suction pipe 704 to provide a suction force for the dust suction block 8. The dust suction block 8 sucks the waste powder on the surface of the stamping die 2 and in the middle die holes through the dust suction port 801. At the same time, the finished tablets are intercepted by the scraper 10 and conveyed to the qualified product container through the third discharge chute 11.

[0045] In summary, negative pressure is generated by the vacuum generator 9, and the vacuum generator 9 provides a suction force for the dust suction block 8 through the gas transmission pipe group 7. The dust suction block 8 directly sucks the waste powder on the surface of the stamping die 2 and in the middle die holes clean, and there will be no phenomenon that the residual waste powder re-enters the feeding boot of the first layer of materials with the die, resulting in color mixing, effectively improving the qualification rate of tablet production.

[0046] In addition to the above waste powder removal device, the present utility model also provides a rotary tablet press including the waste powder removal device disclosed in the above embodiment. For the structures of other parts of the rotary tablet press, please refer to the prior art and will not be elaborated herein.

[0047] It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from several other entities, and do not necessarily require or imply any actual relationship or order between these entities.

[0048] In this article, specific examples are used to elaborate on the principles and implementation modes of the present utility model. The descriptions of the above embodiments are only used to help understand the method and its core idea of the present utility model. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present utility model, several improvements and modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the present utility model.

Claims

1. A waste powder removal device, characterized in that, Comprising: A frame for mounting a stamping die; Columns provided on the frame, with fixing plates provided on the outer peripheral sides of the columns; An adjustment bracket connected to the fixing plate, a quick-release plate provided on the adjustment bracket, and the quick-release plate connected to an air delivery pipe group; A dust suction block provided on the quick-release plate, with a dust suction port provided at the end of the dust suction block, and the dust suction port communicating with the first end of the air delivery pipe group; A vacuum generator connected to the second end of the air delivery pipe group, and the vacuum generator is used to provide a negative pressure force to the air delivery pipe group.

2. The waste powder removal device according to claim 1, wherein, A scraper is provided on the frame, and the scraper is provided on one side of the dust suction block, and the scraper is used to intercept finished tablets.

3. The waste powder removal device according to claim 2, characterized in that, A third discharge chute is provided below the scraper, and the third discharge chute is used to convey the finished tablets to a qualified product container.

4. A waste powder removal device according to claim 1, characterized in that, The air delivery pipe group includes: a first hose, the first hose is connected to a reducing joint, the reducing joint is connected to a second hose, the second hose is connected to a dust suction pipe, and the dust suction pipe is connected to the dust suction block.

5. A waste powder removal device according to claim 4, characterized in that A fixing handle is provided on the adjustment bracket, the fixing handle is connected to the quick-release plate, and the quick-release plate is connected to the dust suction block.

6. The waste powder removal device according to claim 1, characterized in that, A number of kidney-shaped holes are provided on the adjustment bracket, and a number of positioning holes are provided on the fixing plate, and each kidney-shaped hole is connected to one of the positioning holes by a bolt.

7. An unused toner removing device according to claim 6, wherein, A scale is provided on the side of the adjustment bracket, and a pointer adapted to the scale is provided on the side of the fixing plate.

8. A waste powder removal device according to any one of claims 1-7, characterized in that, The vacuum generator is connected to a solenoid valve, and the solenoid valve is used to control the start and stop of the vacuum generator.

9. The waste powder removal device according to claim 1, characterized in that, The distance between the bottom surface of the dust suction block and the top surface of the stamping die is greater than the thickness of the finished tablets.

10. A rotary tablet press, characterized in that, Including the waste powder removal device according to any one of claims 1-9 above.

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