Device convenient for adjusting particle size of pharmaceutical preparation

Abstract

The utility model discloses a device for conveniently adjusting the particle size of a medicinal preparation, which comprises a box body, a granulator shell, a feeding mechanism, a forming plate and a pressing mechanism, and the box body is provided with a top plate and a bottom plate which are oppositely arranged in the height direction of the box body; the granulator shell is fixed in the box body; the feeding mechanism is arranged in the box body, penetrates through the top plate and is communicated with the granulator shell; the forming plate is detachably arranged in the granulator shell, and a plurality of through forming holes are uniformly formed in the forming plate; the pressing mechanism is fixed in the granulator shell, and the pressing mechanism is attached to the forming plate. The forming plate is arranged in the granulator shell, the pressing mechanism is arranged above the forming plate, the medicine raw materials are pressed by the pressing mechanism in the granulator shell, the pressing mechanism presses the medicine raw materials on the forming plate into the forming holes in the forming plate, medicine particles are generated, and when the medicine particles of different sizes are needed, the medicine raw materials can be pressed into the forming holes in the forming plate. And only the forming plates with different specifications need to be replaced.

Description

Technical Field

[0001] The present application relates to the technical field of pharmaceutical devices, and in particular to a device for adjusting the particle size of a pharmaceutical preparation. Background Art

[0002] Pharmaceutical preparations are the production of drugs in a form that is convenient for people to take or use, such as tablets or granules. When making pharmaceutical preparations, a granulator is generally used to make the drug into tablets or granules.

[0003] When the existing granulator is used to make drug preparations, the size of the drug particles cannot be adjusted, resulting in one granulator being able to only make drug preparations of one specification, which brings many inconveniences in actual use.

[0004] The above contents are only used to assist in understanding the technical solution of the present application and do not constitute an admission that the above contents are prior art. Utility Model Content

[0005] The main purpose of the present application is to provide a device for facilitating the adjustment of the particle size of a pharmaceutical preparation, aiming to solve the problem that the existing pharmaceutical granulator can only produce pharmaceutical preparations of one specification.

[0006] To achieve the above-mentioned purpose, the present application provides a device for facilitating the adjustment of the particle size of a pharmaceutical preparation, comprising: a box body, a granulator shell, a feeding mechanism, a forming plate and a pressing mechanism, wherein the box body has a top plate and a bottom plate arranged opposite to each other in its height direction, and the granulator shell is fixed in the box body; the feeding mechanism is arranged in the box body, and the feeding mechanism passes through the top plate and is connected to the granulator shell; the forming plate is detachably arranged in the granulator shell, and a plurality of through forming holes are evenly arranged on the forming plate; the pressing mechanism is fixed in the granulator shell, and the pressing mechanism is in contact with the forming plate.

[0007] Optionally, the device also includes a baffle mechanism, part of which is located in the granulator housing and is arranged on the side of the forming plate away from the pressing mechanism, and the other structure of the baffle mechanism passes through the granulator housing and slidably cooperates with the granulator housing, and the baffle mechanism is fixed to a side wall of the box body.

[0008] Optionally, two surfaces of the granulator housing that cooperate with the forming plate are provided with slide rails, the slide rails extend along a first direction, and the forming plate is slidably fitted in the slide rails.

[0009] Optionally, the pressing mechanism includes two hydraulic cylinders and a pressing roller, wherein the two hydraulic cylinders are fixed to the inner wall of the granulator housing; both ends of the pressing roller are respectively connected to the two hydraulic cylinders, the pressing roller is attached to the forming plate, and the pressing roller has the freedom of movement in a second direction, and the second direction is perpendicular to the first direction.

[0010] Optionally, the baffle mechanism includes multiple cylinders, baffles and connecting plates, wherein the multiple cylinders are fixed to the side walls of the box body and pass through the granulator housing, and the piston rods of the multiple cylinders are slidably matched with the granulator housing; the baffle is located in the granulator housing and is arranged on the side of the forming plate away from the pressing mechanism, and the baffle is close to the forming plate; the connecting plate is located in the granulator housing and is arranged on the side of the baffle facing the multiple cylinders, and the connecting plate connects the piston rods of the multiple cylinders.

[0011] Optionally, the device further comprises a controller, wherein the controller is connected to the two hydraulic cylinders, and the controller is used to control the extension and retraction of the hydraulic cylinders.

[0012] Optionally, the device further comprises a first sieve plate, which is obliquely arranged in the box body, and has a plurality of through first sieve holes evenly arranged on the first sieve plate, wherein the aperture of the first sieve holes is smaller than the aperture of the forming holes arranged on the forming plate.

[0013] Optionally, the device also includes a second sieve plate, which is obliquely arranged in the box body, the second sieve plate is arranged opposite to the first sieve plate, the second sieve plate is arranged on the side of the first sieve plate facing the granulator housing, and the second sieve plate is evenly provided with a plurality of through second sieve holes, and the aperture diameter of the second sieve holes is larger than the aperture diameter of the forming holes set on the forming plate.

[0014] Optionally, the device also includes a discharge port, which is arranged on one side of the box body, and the discharge port has a first side surface and a second side surface which are relatively arranged in the height direction of the box body, and the second side surface is located on the side of the first side surface away from the top plate; the distance from the side edge of the second side surface close to the first sieve plate to the plane where the baffle is located is a, and the distance from the side edge of the second side surface away from the first sieve plate to the plane where the baffle is located is b, then b>a, the first sieve plate has a first angle with the horizontal plane, the second side surface has a second angle with the horizontal plane, and the first angle is equal to the second angle.

[0015] Optionally, the contours of the plurality of forming holes extending through the forming plate form a circular structure.

[0016] The embodiment of the present application proposes a device for adjusting the particle size of a drug preparation. A molding plate is arranged in a granulator housing, and a pressing mechanism is arranged above the molding plate. Drug raw materials are added to the granulator housing from the feeding mechanism, and the drug raw materials are pressed by the pressing mechanism in the granulator housing. The pressing mechanism presses the drug raw materials on the molding plate into the molding holes on the molding plate to generate drug particles. Since the molding plate is detachably arranged in the granulator housing, when drug particles of different sizes are needed, only molding plates of different specifications need to be replaced, thereby adjusting the size of the drug particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of a device for adjusting the particle size of a pharmaceutical preparation provided in an embodiment of the present application;

[0018] Figure 2 for Figure 1 Schematic diagram of the internal structure of the granulator housing;

[0019] Figure 3 for Figure 2 A schematic diagram of the structure from another perspective;

[0020] Figure 4 for Figure 1 A schematic diagram of the structure from another perspective;

[0021] Among them, 1. box body; 2. granulator shell; 3. feeding mechanism; 4. forming plate; 5. pressing mechanism; 501. hydraulic cylinder; 502. pressing roller; 6. baffle mechanism; 601. cylinder; 602. baffle; 603. connecting plate; 7. slide rail; 8. controller; 9. first sieve plate; 901. first sieve hole; 10. second sieve plate; 1001. second sieve hole; 11. discharge port.

[0022] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. 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.

[0024] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0027] See also Figure 1 to Figure 3 The embodiment of the present application relates to a device for adjusting the particle size of a pharmaceutical preparation, which may include a housing 1, a granulator housing 2, a feeding mechanism 3, a forming plate 4, and a pressing mechanism 5. The housing 1 has a top plate and a bottom plate arranged opposite to each other in the height direction; the granulator housing 2 is fixed in the housing 1; the feeding mechanism 3 is arranged in the housing 1, and the feeding mechanism 3 penetrates the top plate and is connected to the granulator housing 2; the forming plate 4 is detachably arranged in the granulator housing 2, and a plurality of through forming holes are evenly arranged on the forming plate 4; the pressing mechanism 5 is fixed in the granulator housing 2, and the pressing mechanism 5 fits the forming plate 4.

[0028] Specifically, when preparing a drug preparation, the drug raw materials are first mixed and stirred evenly, and then the drug raw materials are added to the granulator housing 2 from the feeding mechanism 3. In the granulator housing 2, the pressing mechanism 5 is started to press the drug raw materials in the granulator housing 2. During the pressing process, the drug raw materials are pressed into the forming holes opened on the forming plate 4, thereby forming drug particles. If drug particles of different sizes need to be produced, only the forming plate 4 needs to be replaced.

[0029] In this embodiment, a forming plate 4 is arranged in the granulator housing 2, and a pressing mechanism 5 is arranged above the forming plate 4, and the drug raw material is added to the granulator housing 2 from the feeding mechanism 3, and the drug raw material is pressed by the pressing mechanism 5 in the granulator housing 2. The pressing mechanism 5 presses the drug raw material on the forming plate 4 into the forming holes on the forming plate 4 to generate drug particles. Since the forming plate 4 is detachably arranged in the granulator housing 2, when drug particles of different sizes are needed, it is only necessary to replace the forming plates 4 of different specifications, so that the size of the drug particles can be adjusted.

[0030] See also Figure 2 In some embodiments, the device for adjusting the particle size of the drug preparation may further include a baffle mechanism 6, wherein a portion of the baffle mechanism 6 is located in the granulator housing 2 and is arranged on the side of the forming plate 4 away from the pressing mechanism 5, and another portion of the baffle mechanism 6 passes through the granulator housing 2 and is slidably matched with the granulator housing 2, and the baffle mechanism 6 is fixed to a side wall of the box body 1.

[0031] Specifically, the baffle mechanism 6 is disposed on the bottom side of the forming plate 4. When the pressing mechanism 5 presses the drug raw material on the forming plate 4, the baffle mechanism 6 is attached to the bottom side of the forming plate 4 to ensure the forming of the drug particles during the pressing process.

[0032] In this embodiment, a baffle mechanism 6 is provided on the bottom side of the forming plate 4, and the baffle mechanism 6 plays an assisting role in the process of pressing and molding the drug particles. Specifically, the baffle mechanism 6 is attached to the bottom side of the forming plate 4 and cooperates with the forming holes opened on the forming plate 4, which is more conducive to the pressing and molding of the drug particles.

[0033] See also Figure 2 The two surfaces of the granulator housing 2 that match the forming plate 4 are both provided with slide rails 7 , the slide rails 7 extend along the first direction X, and the forming plate 4 is slidably fitted in the slide rails 7 .

[0034] Specifically, the first direction X can be, for example, the left-right direction in the figure. When it is necessary to prepare pharmaceutical preparation particles of different sizes, the forming plate 4 is pulled out from the slide rail 7 along the first direction X, and the forming plate 4 of appropriate specifications is replaced, so as to adjust the size of the pharmaceutical preparation particles.

[0035] In this embodiment, the slide rail 7 is provided, and the forming plate 4 is fitted in the slide rail 7, so that the forming plate 4 can be easily removed. All the forming plates 4 are of the same size, and the only difference is that the diameters of the forming holes opened on the forming plates 4 are different. When compressing the drug raw materials, different forming plates 4 are replaced to adjust the drug particle size.

[0036] See also Figure 2 The pressing mechanism 5 may include two hydraulic cylinders 501 and a pressing roller 502, wherein the two hydraulic cylinders 501 are fixed to the inner wall of the granulator housing 2; both ends of the pressing roller 502 are respectively connected to the two hydraulic cylinders 501, the pressing roller 502 is attached to the forming plate 4, and the pressing roller 502 has the freedom of movement in the second direction Y, and the second direction Y is perpendicular to the first direction X.

[0037] Specifically, the two hydraulic cylinders 501 drive the pressing roller 502 to reciprocate on the forming plate 4, thereby achieving the pressing of the drug raw material. Specifically, when the piston rods of the two hydraulic cylinders 501 extend, the pressing roller 502 moves away from the hydraulic cylinders 501; when the piston rods of the two hydraulic cylinders 501 contract, the pressing roller 502 moves toward the hydraulic cylinder 501. The hydraulic cylinder 501 also rotates during the movement.

[0038] In this embodiment, two hydraulic cylinders 501 are selected to cooperate with the pressing roller 502 to realize the pressing of the drug raw materials. During the pressing process, under the drive of the two hydraulic cylinders 501, the pressing roller 502 presses the drug raw materials on the molding plate 4 into the molding hole, thereby forming molded drug particles. The entire pressing structure is simple and can be implemented, and it does not affect the replacement of the molding plate 4.

[0039] See also Figure 3 , further, the baffle mechanism 6 may include a plurality of cylinders 601, a baffle 602 and a connecting plate 603. The plurality of cylinders 601 are fixed to the side wall of the box body 1 and pass through the granulator housing 2, and the piston rods of the plurality of cylinders 601 are slidably matched with the granulator housing 2; the baffle 602 is located in the granulator housing 2 and is arranged on the side of the forming plate 4 away from the pressing mechanism 5, and the baffle 602 is close to the forming plate 4; the connecting plate 603 is located in the granulator housing 2 and is arranged on the side of the baffle 602 facing the plurality of cylinders 601, and the connecting plate 603 is connected to the piston rods of the plurality of cylinders 601.

[0040] Specifically, the baffle mechanism 6 includes two cylinders 601, a baffle 602 and a connecting plate 603. When the pressing mechanism 5 presses the drug raw material, the piston rods of the two cylinders 601 extend and push the baffle 602 to the lower side of the forming plate 4 for pressing; when the pressing mechanism 5 completes pressing of the drug raw material, the piston rods of the two cylinders 601 contract and pull the baffle 602 back to a position where it does not block the forming holes on the forming plate 4, so that the drug particles can fall off.

[0041] In this embodiment, by providing a plurality of cylinders 601 and baffles 602 in cooperation with the forming plate 4, the drug raw materials can be pressed into particles of the same size each time the drug raw materials are pressed, so that the pressed particles of the drug raw materials meet the preset requirements.

[0042] See also Figure 1 , Figure 4 The device for adjusting the particle size of the drug preparation may further include a controller 8, wherein the controller 8 is connected to two hydraulic cylinders 501, and the controller 8 is used to control the hydraulic cylinders 501 to extend and retract.

[0043] Specifically, the controller 8 compares the sensor signal with a preset value, calculates a control signal, and controls the hydraulic cylinder 501 by controlling the solenoid valve.

[0044] In this embodiment, the controller 8 is used to control the extension and retraction of the two hydraulic cylinders 501, which can conveniently and quickly control the extension and retraction of the hydraulic cylinders 501, making it convenient for the pressing roller 502 to press the drug raw materials.

[0045] See also Figure 1 The device for adjusting the particle size of the drug preparation may also include a first sieve plate 9, wherein the first sieve plate 9 is obliquely arranged in the box body 1, and a plurality of through first sieve holes 901 are evenly arranged on the first sieve plate 9, and the aperture of the first sieve hole 901 is smaller than the aperture of the forming hole arranged on the forming plate 4.

[0046] Specifically, after the drug raw material is pressed and formed by the pressing mechanism 5, it falls from the granulator shell 2 onto the first sieve plate 9 in the box body 1. Since the aperture of the first sieve hole 901 opened on the first sieve plate 9 is smaller than the aperture of the forming hole set on the forming plate 4, some debris generated during the pressing process will fall from the first sieve hole 901 of the first sieve plate 9 into the box body 1, and the qualified drug particles after pressing are on the upper surface of the first sieve plate 9.

[0047] In this embodiment, the first sieve plate 9 is tiltedly arranged in the box body 1, so that the pressed drug particles can roll to the bottom of the first sieve plate 9, which is convenient for collecting the drug particles; the aperture of the first sieve hole 901 is set to be smaller than the aperture of the forming hole set on the forming plate 4, in order to remove some unqualified debris during the pressing process, which is beneficial to improve the yield of drug particles.

[0048] See also Figure 1The device for adjusting the particle size of the drug preparation may further include a second sieve plate 10, wherein the second sieve plate 10 is obliquely arranged in the box body 1, the second sieve plate 10 is arranged opposite to the first sieve plate 9, the second sieve plate 10 is arranged on the side of the first sieve plate 9 facing the granulator housing 2, and a plurality of through second sieve holes 1001 are evenly arranged on the second sieve plate 10, and the aperture of the second sieve hole 1001 is larger than the aperture of the forming hole arranged on the forming plate 4.

[0049] Specifically, the second sieve plate 10 is provided to prevent the baffle mechanism 6 from malfunctioning. When the drug raw materials are pressed, the baffle 602 fails to promptly adhere to the bottom side of the forming hole provided on the forming plate 4, resulting in larger drug particles. The second sieve plate 10 will block these larger drug particles on the second sieve plate 10, while those qualified drugs with smaller particles will pass through the second sieve hole 1001 to reach the drug collection area.

[0050] In this embodiment, the pressed drug particles are screened by the second sieve plate 10 to block the larger drug particles on the second sieve plate 10, and the qualified drugs fall from the second sieve holes 1001 on the second sieve plate 10, which is beneficial to improve the yield of the drug particles.

[0051] See also Figure 1 The device for adjusting the particle size of the drug preparation may also include a discharge port 11, wherein the discharge port 11 is arranged on one side of the box body 1, and the discharge port 11 has a first side surface and a second side surface that are relatively arranged in the height direction of the box body 1, and the second side surface is located on the side of the first side surface away from the top plate; the distance from the side edge of the second side surface close to the first sieve plate 9 to the plane where the baffle 602 is located is a, and the distance from the side edge of the second side surface away from the first sieve plate 9 to the plane where the baffle 602 is located is b, then b>a, the first sieve plate 9 has a first angle with the horizontal plane, the second side surface has a second angle with the horizontal plane, and the first angle is equal to the second angle.

[0052] Specifically, the discharge port 11 is disposed between the first sieve plate 9 and the second sieve plate 10 . After the drug particles are screened by the first sieve plate 9 and the second sieve plate 10 , they slide to the discharge port 11 and the qualified drug particles are collected.

[0053] In this embodiment, the drug particles after screening are discharged from the discharge port 11 by setting the discharge port 11, the drug particles with larger particles are blocked by the second sieve plate 10, and the drug particles with smaller particles pass through the first sieve holes 901 of the first sieve plate 9 and fall to the bottom of the box 1, so that the drug particles are screened, which is conducive to separating defective products.

[0054] See also Figure 2Furthermore, the contours of the multiple forming holes on the forming plate 4 form a circular structure. The advantage of this arrangement is that the compressed and formed drug particles can fall from the multiple forming holes into the box body 1, thereby facilitating collection.

[0055] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A device for adjusting the particle size of a pharmaceutical preparation, characterized in that: include: The box body (1) has a top plate and a bottom plate which are arranged opposite to each other in the height direction thereof; A granulator housing (2) is fixed inside the housing (1); A feeding mechanism (3) is arranged in the box body (1), and the feeding mechanism (3) penetrates the top plate and is in communication with the granulator housing (2); A forming plate (4) is detachably arranged in the granulator housing (2), and a plurality of through-going forming holes are evenly arranged on the forming plate (4); The pressing mechanism (5) is fixed in the granulator housing (2), and the pressing mechanism (5) is in contact with the forming plate (4).

2. The device for adjusting the particle size of a pharmaceutical preparation according to claim 1, characterized in that: The device also includes: A baffle mechanism (6), part of which is located in the granulator housing (2) and is arranged on the side of the forming plate (4) away from the pressing mechanism (5), and another part of which passes through the granulator housing (2) and is slidably matched with the granulator housing (2), and the baffle mechanism (6) is fixed to a side wall of the box body (1).

3. The device for adjusting the particle size of a pharmaceutical preparation according to claim 1, characterized in that: Both surfaces of the pelletizer housing (2) that match the forming plate (4) are provided with slide rails (7), the slide rails (7) extend along a first direction, and the forming plate (4) is slidably fitted in the slide rails (7).

4. The device for adjusting the particle size of a pharmaceutical preparation according to claim 3, characterized in that: The pressing mechanism (5) comprises: Two hydraulic cylinders (501) are both fixed to the inner wall of the granulator housing (2); The pressing roller (502) has two ends respectively connected to the two hydraulic cylinders (501), the pressing roller (502) is attached to the forming plate (4), and the pressing roller (502) has the freedom to move in a second direction, and the second direction is perpendicular to the first direction.

5. The device for adjusting the particle size of a pharmaceutical preparation according to claim 2, characterized in that: The baffle mechanism (6) comprises: A plurality of cylinders (601) are fixed to the side wall of the box body (1) and pass through the granulator housing (2), and the piston rods of the plurality of cylinders (601) are slidably matched with the granulator housing (2); a baffle (602) located in the granulator housing (2) and arranged on a side of the forming plate (4) facing away from the pressing mechanism (5), the baffle (602) being in close contact with the forming plate (4); A connecting plate (603) is located inside the granulator housing (2) and is arranged on the side of the baffle plate (602) facing the multiple cylinders (601), and the connecting plate (603) connects the piston rods of the multiple cylinders (601).

6. The device for adjusting the particle size of a pharmaceutical preparation according to claim 4, characterized in that: The device also includes: A controller (8) is connected to the two hydraulic cylinders (501), and the controller (8) is used to control the hydraulic cylinders (501) to extend and retract.

7. The device for adjusting the particle size of a pharmaceutical preparation according to claim 5, characterized in that: The device also includes: The first sieve plate (9) is arranged obliquely in the box body (1), and a plurality of through first sieve holes (901) are evenly arranged on the first sieve plate (9), and the aperture of the first sieve holes (901) is smaller than the aperture of the forming holes arranged on the forming plate (4).

8. The device for adjusting the particle size of a pharmaceutical preparation according to claim 7, characterized in that: The device also includes: The second sieve plate (10) is obliquely arranged in the box body (1), the second sieve plate (10) is arranged opposite to the first sieve plate (9), the second sieve plate (10) is arranged on the side of the first sieve plate (9) facing the granulator housing (2), and a plurality of through-going second sieve holes (1001) are evenly arranged on the second sieve plate (10), and the aperture of the second sieve hole (1001) is larger than the aperture of the forming hole arranged on the forming plate (4).

9. The device for adjusting the particle size of a pharmaceutical preparation according to claim 8, characterized in that: The device also includes: A discharge port (11) is arranged on one side of the box body (1), the discharge port (11) having a first side surface and a second side surface which are arranged opposite to each other in the height direction of the box body (1), and the second side surface is located on a side of the first side surface away from the top plate; The distance from the side edge of the second side surface close to the first sieve plate (9) to the plane where the baffle plate (602) is located is a, and the distance from the side edge of the second side surface far from the first sieve plate (9) to the plane where the baffle plate (602) is located is b, then b>a, a first angle is formed between the first sieve plate (9) and the horizontal plane, a second angle is formed between the second side surface and the horizontal plane, and the first angle is equal to the second angle.

10. The device for adjusting the particle size of a pharmaceutical preparation according to claim 1, characterized in that: The contours of the plurality of forming holes that penetrate the forming plate (4) form a circular structure.

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