Diamond seat of tobacco cutter

Abstract

The utility model belongs to the technical field of cigarette manufacturing, and particularly relates to a tobacco cutter diamond seat which comprises a support body installed on a support wall plate, and an installation blind hole is formed in the support body. The diamond pen is movably mounted in the mounting blind hole, and a diamond is fixedly arranged at the upper end of the diamond pen; the compression spring is arranged in the blind hole in a penetrating mode and located below the diamond pen. The locking mechanism is mounted on the support body and is used for fixing the diamond pen on the support body; the mounting column is fixedly mounted on the support body, a rotating arm is rotatably mounted on the mounting column, and a calibration table is mounted below the rotating arm; the calibration table is located above the diamond pen, and the lower end face of the calibration table and the working face of the grinding wheel are located on the same horizontal plane. The utility model aims to solve the problems of complicated operation and low efficiency during adjustment and replacement caused by the structural defects of the existing diamond seat.

Description

Technical Field

[0001] This utility model belongs to the field of cigarette manufacturing technology, specifically relating to a diamond seat for a shredder. Background Technology

[0002] The shredder is the most expensive and precise piece of equipment on the tobacco production line, requiring high skills from maintenance and operation personnel. The working principle of the shredder is as follows: Loose material with a certain flow rate enters a wedge-shaped channel formed by upper and lower conveyor chains via a feeding device. When the material accumulates above the controlled material level, the upper and lower chains move to convey and compress the material, gradually forming a compact "tobacco cake," which is then delivered to the rectangular cutter gate at the smaller end of the wedge-shaped channel. The cutter roller driver drives the cutter roller to rotate along the cutter gate, and the roller speed and chain speed are maintained at a strict ratio by the control system. Multiple shredding blades placed on the cutter roller are continuously or intermittently fed quantitatively by a pusher device to replenish blade wear. The roller drives the blades to rotate, forming a cutting cylinder of a specified diameter with a sharp cutting edge, which cuts the continuously delivered "tobacco cake" from the cutter gate into tobacco shreds of the required width, which are then discharged from the equipment's unloading hopper. Meanwhile, a grinding wheel mounted on a sliding grinding wheel frame reciprocates along a direction parallel to the roller's rotation axis, and is driven by a separate motor. The high-speed rotation of the grinding wheel grinds the continuously fed cutting tool, keeping the cutting edge sharp. When the grinding wheel moves to one end with the grinding wheel holder, it automatically feeds once along the direction of the cutting roller. When it moves to the other end, the diamond mounted on the grinding wheel dresser automatically dresses the grinding wheel once in a round trip to maintain its sharpness and correct grinding position.

[0003] Therefore, the blade clearance (the gap between the blade and the blade gate) and the blade extension height are key factors in ensuring the quality of shredding. They are initially set by the manufacturer, but each time the diamond is adjusted or replaced, the diamond height will change, thus changing the blade extension height and the blade clearance. After adjusting or replacing the diamond, it is necessary to first check the blade clearance, then adjust the blade extension height, then adjust the grinding wheel height, and finally determine the diamond height. During this process, multiple test runs, sharpening of the blade, and grinding wheel re-sharpening are required.

[0004] In other words, when diamond adjustment and replacement must be performed by experienced repairmen, the process is cumbersome and inefficient. Utility Model Content

[0005] The purpose of this invention is to provide a diamond seat for a shredder, which solves the problem of cumbersome operation and low efficiency during adjustment and replacement caused by the structural defects of existing diamond seats.

[0006] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows:

[0007] A diamond holder for a shredder, comprising:

[0008] A support body installed on a support wall plate, wherein the support body has blind holes for installation.

[0009] A diamond pen, wherein the diamond pen is movably installed in a blind mounting hole, and a diamond is fixedly provided at the upper end of the diamond pen;

[0010] A compression spring, which passes through a blind hole and is located below the diamond pen;

[0011] A locking mechanism is installed on the support body to fix the diamond pen to the support body;

[0012] The mounting column is fixedly mounted on the support body, and a rotating arm is rotatably mounted on the mounting column. A calibration platform is mounted below the rotating arm.

[0013] The calibration platform is located above the diamond pen, and the lower end face of the calibration platform is at the same level as the working surface of the grinding wheel.

[0014] Further specifying, the locking mechanism includes a slot and a locking bolt;

[0015] The strip groove is formed at the free end of the support body and vertically penetrates the blind hole, and the strip groove divides the free end of the support body into two spring pieces;

[0016] One of the spring pieces has a through hole, and the other spring piece has a threaded hole;

[0017] The locking bolt passes through the through hole and is screwed into the threaded hole.

[0018] This structural design, through the cooperation of the strip groove and the locking bolt, forms a locking mechanism. By tightening the locking bolt, the two spring pieces can be driven to close together, thereby fixing the diamond pen. The structure is simple, easy to manufacture, and highly practical.

[0019] Further specified, a calibration bolt is screwed onto the support body;

[0020] The upper end face of the calibration platform is integrally formed with a stud, which is screwed to the rotating arm;

[0021] The central axis of the calibration bolt, the central axis of the stud, and the central axis of the mounting post are parallel to each other;

[0022] When the calibration platform rotates to be above the calibration bolt, the upper end face of the calibration bolt abuts against the lower end face of the calibration platform.

[0023] This structural design allows for easier assembly by calibrating the height of the lower end face of the calibration platform using calibration bolts. Furthermore, when the calibration platform is not in its working position, the calibration bolts support it, preventing damage caused by the free end of the rotating arm being suspended in a vibrating environment for extended periods. This design is highly practical.

[0024] Further specified, the diamond is conical, the central axis of the diamond is coaxial with the central axis of the diamond pen, and the angle between the central axis of the diamond and the lower end face of the calibration platform is α, wherein α is less than 90° and greater than the angle between the generatrix of the cone and the central axis.

[0025] This structural design, through the tilting of the diamond pen relative to the grinding wheel, allows the diamond tip to rotate at a certain angle and move upward a certain distance after it wears down, so that the new diamond tip can be used to machine the grinding wheel. This avoids the problem of low diamond utilization efficiency caused by an increased contact area between the diamond and the grinding wheel, which would no longer meet the machining requirements and would necessitate diamond replacement.

[0026] Further specifying, the upper sidewall of the diamond pen is provided with several markings above the support body, and the markings are evenly distributed along the central axis of the diamond pen.

[0027] This structural design, with markings indicating the rotation angle of the diamond pen, improves the adjustment efficiency of the diamond pen and is highly practical.

[0028] Furthermore, the number of the identifiers is an even number.

[0029] This structural design, by setting the number of markings to an even number, allows the diamond pen to be rotated 180° after a single wear, enabling the new diamond tip to re-machine the grinding wheel, making it more convenient to use.

[0030] Furthermore, the number of the identifiers is eight.

[0031] This structural design, by setting the number of markings to eight, allows the diamond pen to be rotated 180° for secondary use after the diamond is worn for the first time and a first wear surface is formed. After the second wear and formation of a second wear surface, the diamond pen is rotated 90° for a third use, and so on, allowing the diamond pen to be used multiple times, making it highly practical.

[0032] Further specifying, the upper sidewall of the diamond pen is evenly provided with eight marking surfaces, and the markings are set on the marking surfaces.

[0033] This structural design, which uses the mark surface to support the marking, makes it easier to manufacture the marking on the diamond pen during manufacturing. In addition, the parallelism between the mark surface and the side wall of the support body can be used to roughly determine whether the diamond pen has rotated into place, making it highly practical.

[0034] Further specified, the identifier is a numerical code, and the numerical code is arranged clockwise in the order of "1", "6", "4", "8", "2", "5", "3", "7".

[0035] This structural design uses numerical codes as identifiers and restricts the order of these codes. This allows for easy adjustment of the diamond pen by simply adding one to the previous number. For example, when using it for the first time, align the number "1" with the front of the support body; when using it for the second time, align the number "2" with the front of the support body. The structure is simple and easy to use.

[0036] The utility model employing the above technical solution has the following advantages:

[0037] 1. Through the cooperation of the support body, mounting blind hole, diamond pen, compression spring, locking mechanism, mounting column, rotating arm and calibration table, when the diamond needs to be adjusted or replaced, simply rotate the rotating arm, which will drive the calibration table to rotate above the diamond. Then, release the locking mechanism, and the compression spring will automatically lift the diamond pen so that the diamond rests against the calibration table. Then, use the locking mechanism again to fix the diamond pen to the support body. Finally, the rotating arm will drive the calibration table to rotate away from above the diamond. The operation is simple and improves work efficiency.

[0038] 2. The locking mechanism is formed by the cooperation of the slot and the locking bolt. By tightening the locking bolt, the two spring pieces can be driven to close together, thereby fixing the diamond pen. The structure is simple, easy to manufacture, and highly practical.

[0039] 3. The height of the lower end face of the calibration platform is calibrated by calibration bolts, making assembly more convenient; at the same time, when the calibration platform is not in the working position, the calibration bolts support the calibration platform, avoiding damage caused by the free end of the rotating arm being suspended in a vibration environment for a long time. This makes it highly practical.

[0040] 4. By tilting the diamond pen relative to the grinding wheel, after the diamond tip is worn, it can be rotated at a certain angle and moved upward a certain distance to use the new diamond tip to machine the grinding wheel. This avoids the problem of low diamond utilization efficiency caused by an increased contact area between the diamond and the grinding wheel, which would no longer meet the machining requirements and necessitate diamond replacement. Attached Figure Description

[0041] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0042] Figure 1 This is a schematic diagram of the structure of an embodiment of a diamond seat for a shredder according to the present invention;

[0043] Figure 2 for Figure 1 Enlarged structural diagram at point A;

[0044] Figure 3 This is a schematic diagram of the support body in an embodiment of the diamond seat of a shredder according to the present invention;

[0045] Figure 4 This is a schematic diagram of the diamond pen part in an embodiment of a diamond seat for a shredder according to the present invention;

[0046] Figure 5 for Figure 4 Enlarged structural diagram at point B;

[0047] Figure 6 This is a schematic diagram of the structure of the diamond seat of a wire cutter in this embodiment of the present invention, showing the engagement between the diamond and the calibration table before wear.

[0048] Figure 7 This is a schematic diagram of the structure of the diamond seat of a wire cutter according to the present invention after the first wear of the diamond and its cooperation with the calibration table;

[0049] Figure 8 This is a schematic diagram of the structure of the diamond seat of a wire cutter according to the present invention after the diamond wears for the second time and cooperates with the calibration table;

[0050] Figure 9 This is a schematic diagram illustrating the marking sequence on the diamond pen in an embodiment of a diamond seat for a shredder according to this utility model;

[0051] The symbols for the main components are explained below:

[0052] Support body 1, support wall plate 10, blind hole 11

[0053] 12. Slotted groove; 120. Locking bolt; 121. Through hole; 122. Threaded hole; 13. Bevel.

[0054] Diamond pen 2, diamond 20, first wear surface 201, second wear surface 202

[0055] Signage 21, Sign 210

[0056] Mounting column 3, calibration platform 30, rotating arm 31

[0057] Calibration bolt 4, stud 40. Detailed Implementation

[0058] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that similar or identical parts are referred to by the same reference numerals in the drawings or description. Implementations not shown or described in the drawings are forms known to those skilled in the art. Furthermore, directional terms mentioned in the embodiments, such as "up," "down," "top," "bottom," "left," "right," "front," and "back," are only for reference to the directions in the drawings and are not intended to limit the scope of protection of the present invention.

[0059] like Figures 1-9 As shown, the present invention provides a diamond holder for a shredder, comprising:

[0060] The support body 1 is installed on the support wall plate 10, and the support body 1 has a blind hole 11 for installation.

[0061] Diamond pen 2 is movably installed in the blind hole 11, and a diamond 20 is fixedly provided at the upper end of the diamond pen 2.

[0062] A compression spring is inserted into the blind hole 11 and located below the diamond pen 2;

[0063] A locking mechanism is installed on the support body 1 to fix the diamond pen 2 to the support body 1.

[0064] Mounting column 3 is fixedly mounted on support body 1. A rotating arm 31 is rotatably mounted on mounting column 3. A calibration platform 30 is mounted below the rotating arm 31.

[0065] The calibration platform 30 is located above the diamond pen 2, and the lower end face of the calibration platform 30 is at the same level as the working surface of the grinding wheel.

[0066] Through the cooperation of the support body 1, mounting blind hole 11, diamond pen 2, compression spring, locking mechanism, mounting column 3, rotating arm 31 and calibration platform 30, when the diamond needs to be adjusted or replaced, simply rotate the rotating arm 31, which will drive the calibration platform 30 to rotate above the diamond 20. Then, release the locking mechanism, and the compression spring will automatically lift the diamond pen 2, so that the diamond 20 rests against the calibration platform 30. Then, use the locking mechanism again to fix the diamond pen 2 to the support body 1. Finally, the rotating arm 31 will drive the calibration platform 30 to rotate away from above the diamond 20. The operation is simple and improves work efficiency.

[0067] The locking mechanism includes a slot 12 and a locking bolt 120;

[0068] The strip groove 12 is formed at the free end of the support body 1 and vertically penetrates the blind hole 11. The strip groove 12 divides the free end of the support body 1 into two spring pieces.

[0069] One of the spring pieces has a through hole 121, and the other spring piece has a threaded hole 122;

[0070] The locking bolt 120 passes through the through hole 121 and is screwed into the threaded hole 122.

[0071] In practice, depending on the actual situation, a threaded hole communicating with the blind hole 11 can be opened on the side plate of the support body 1, and an adjusting bolt can be screwed into the threaded hole. The diamond pen 2 can be fixed by tightening the adjusting bolt to push against it. In this embodiment, the locking mechanism is formed by the cooperation of the strip groove 12 and the locking bolt 120. By tightening the locking bolt 120, the two spring pieces can be driven to close together, thereby completing the fixation of the diamond pen 2. The structure is simple, easy to manufacture, and highly practical.

[0072] A calibration bolt 4 is screwed onto the support body 1;

[0073] The upper end face of the calibration platform 30 is integrally formed with a stud 40, which is screwed to the rotating arm 31.

[0074] The central axis of the calibration bolt 4, the central axis of the stud 40, and the central axis of the mounting post 3 are parallel to each other;

[0075] When the calibration platform 30 rotates above the calibration bolt 4, the upper end face of the calibration bolt 4 abuts against the lower end face of the calibration platform 30.

[0076] The height of the lower end face of the calibration platform 30 is calibrated by the calibration bolt 4, making assembly more convenient. At the same time, when the calibration platform 30 is in a non-working position, the calibration bolt 4 supports the calibration platform 30, preventing damage caused by the free end of the rotating arm 31 being suspended in a vibration environment for a long time. It is highly practical.

[0077] Diamond 20 is conical in shape. The central axis of diamond 20 is coaxial with the central axis of diamond pen 2. The angle between the central axis of diamond 20 and the lower end face of calibration platform 30 is α. α is less than 90° and greater than the angle between the generatrix of the cone and the central axis.

[0078] In practice, depending on the actual situation, the diamond 20 can be set as a square pyramid, and the central axis of the diamond 20 can be set perpendicular to the lower end face of the calibration platform 30. In this embodiment, by tilting the diamond pen 2 relative to the grinding wheel, after the tip of the diamond 20 is worn, it can be rotated at a certain angle and moved upward a certain distance, so that the new tip of the diamond 20 can be used to turn the grinding wheel. This avoids the problem of low diamond utilization efficiency caused by the increased contact area between the diamond and the grinding wheel, which would no longer meet the turning requirements and would require the diamond to be replaced.

[0079] The free end of the support body 1 is inclined from top to bottom away from the support wall plate 10 to form an inclined surface 13, which is perpendicular to the central axis of the blind hole 11.

[0080] In fact, depending on the actual situation, the inclined surface 13 can be omitted and directly set to a right angle. In this embodiment, the setting of the inclined surface 13 makes it more convenient and practical to open the blind hole 11.

[0081] The upper sidewall of the diamond pen 2 is provided with several markings 210 above the support body 1, and the markings 210 are evenly distributed along the central axis of the diamond pen 2.

[0082] In fact, even without the marking 210, the diamond pen 2 can be adjusted adaptively by observing the wear of the diamond 20 tip. In this embodiment, the rotation angle of the diamond pen 2 is marked by the marking 210, thereby improving the adjustment efficiency of the diamond pen 2 and making it highly practical.

[0083] The number of identifiers 210 is even.

[0084] In practice, depending on the actual situation, the number of markings 210 can be set to three, five, or other quantities. In this embodiment, by setting the number of markings 210 to an even number, after one wear, the diamond pen 2 can be rotated 180° so that the new tip of the diamond 20 can be re-machined on the grinding wheel, making it more convenient to use.

[0085] There are eight identifiers for 210.

[0086] In practice, depending on the actual situation, the number of markings 210 can be set to two, four, or other quantities. In this embodiment, the number of markings 210 is set to eight. After the diamond 20 is worn for the first time and forms the first wear surface 201, the diamond pen 2 is rotated 180° and reused for a second time. After the second wear and the formation of the second wear surface 202, the diamond pen 2 is rotated 90° and reused for a third time. This process is repeated to reuse the diamond pen 2 multiple times, making it highly practical.

[0087] The upper side wall of the diamond pen 2 is evenly provided with eight marking surfaces 21, and the markings 210 are set on the marking surfaces 21.

[0088] In practice, depending on the actual situation, the mark 210 can also be directly set on the side wall of the diamond pen 2. In this embodiment, the mark 210 is supported by the mark surface 21, which makes it easier to manufacture the mark 210 on the diamond pen 2. In addition, the parallelism between the mark surface 21 and the side wall of the support body 1 can be used to roughly determine whether the diamond pen 2 has rotated into place, which is more practical.

[0089] The identifier 210 is a numerical designation, with the numbers arranged clockwise in the order of "1", "6", "4", "8", "2", "5", "3", and "7".

[0090] In practice, different letters can be selected as the identifier 210, or other arrangement orders can be used depending on the actual situation. In this embodiment, the specific content of the identifier 210 is determined by using a number, and the arrangement order of the number is limited so that when adjusting the diamond pen 2, only one needs to be added to the previous number. That is, when using it for the first time, the number "1" is aligned with the front end of the support body 1, and when using it for the second time, the number "2" is aligned with the front end of the support body 1. The structure is simple and easy to use.

[0091] A vibration sensor is installed on the support body 1.

[0092] By setting up vibration sensors, vibration signals can be converted into electrical signals using a vibration signal converter. This allows for real-time monitoring of the equipment's vibration status. Furthermore, by analyzing the electrical signals, the degree of contact between the grinding wheel and the diamond can be assessed, and the feed rate and frequency of the grinding wheel can be adjusted accordingly to ensure that the sharpness of the cutting tool and the radius of the cutting roller remain within the normal range.

[0093] In this embodiment, during installation, the calibration bolt 4 is rotated so that the plane of the upper end face of the calibration bolt 4 is on the same plane as the lower end face of the grinding wheel. Then, the rotating arm 31 drives the calibration table 30 to rotate above the calibration bolt 4. After that, the stud 40 is rotated so that the lower end face of the calibration table 30 abuts against the upper end face of the calibration bolt 4.

[0094] When installing the diamond pen 2 that has not been worn, insert the compression spring and the diamond pen 2 into the blind hole 11 in sequence, press the diamond pen 2 downward, and then tighten the locking bolt 120 to temporarily fix the diamond pen 2.

[0095] Next, rotate the rotating arm 31 so that it rotates around the mounting post 3, thereby causing the calibration platform 30 to rotate above the diamond 20. Then, loosen the locking bolt 120. At this time, under the action of the compression spring, the diamond pen 2 moves along the central axis of the blind hole 11 towards the calibration platform 30 until the tip of the diamond 20 rests against the lower end face of the calibration platform 30. Then, manually rotate the diamond pen 2 so that the side marked 210 with "1" faces the front end face of the support body 1. Then tighten the locking bolt 120 to complete the fixation between the diamond pen 2 and the support body 1 (e.g., Figure 6 (as shown)

[0096] Then, rotate the rotating arm 31 around the mounting column 3, and the rotating arm 31 will drive the calibration table 30 to rotate above the calibration bolt 4.

[0097] After a period of use, the tip of the diamond 20 is worn by the grinding wheel, forming the first wear surface 201, which can no longer meet the turning requirements of the grinding wheel. When the grinding wheel moves to the point of disengaging from the diamond 20, the operation of the wire cutter can be stopped, so that the diamond 20 is exposed.

[0098] Then rotate the rotating arm 31 so that it rotates around the mounting post 3, and then the rotating arm 31 drives the calibration table 30 to rotate above the diamond 20. Then loosen the locking bolt 120. At this time, the diamond pen 2 moves along the central axis of the blind hole 11 towards the calibration table 30 under the action of the compression spring until the first wear surface 201 of the diamond 20 abuts against the lower end surface of the calibration table 30.

[0099] Next, manually rotate the diamond pen 2 so that the side marked "2" on 210 faces the front end of the support body 1. That is, rotate the diamond pen 2 180° around its own central axis. At this time, the new tip of the diamond 20 rests against the lower end face of the calibration table 30. Then tighten the locking bolt 120 to complete the fixation between the diamond pen 2 and the support body 1 (e.g., Figure 7 As shown in the figure, at this point, the same diamond 20 can be reused.

[0100] Similarly, after the second wear surface 202 is formed, referring to the above operation procedure, the side marked 210 as "3" is placed facing the front end of the support body 1, thus forming the third use of the diamond pen 2.

[0101] Similarly, the same diamond 20 on the diamond pen 2 can be used multiple times.

[0102] The above provides a detailed description of a diamond seat for a shredder provided by this utility model. The specific embodiments are described only to aid in understanding the method and core concept of this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A diamond seat for a shredder, characterized in that: include: A support body (1) is installed on a support wall plate (10), and a blind hole (11) is provided on the support body (1). Diamond pen (2), the diamond pen (2) is movably installed in the mounting blind hole (11), and a diamond (20) is fixedly provided at the upper end of the diamond pen (2). A compression spring, which passes through a blind hole (11) and is located below the diamond pen (2); A locking mechanism is installed on the support body (1) for fixing the diamond pen (2) to the support body (1); Mounting column (3), the mounting column (3) is fixedly mounted on the support body (1), a rotating arm (31) is rotatably mounted on the mounting column (3), and a calibration platform (30) is mounted below the rotating arm (31). The calibration platform (30) is located above the diamond pen (2), and the lower end face of the calibration platform (30) is at the same level as the working surface of the grinding wheel.

2. The diamond seat for a slicing machine according to claim 1, characterized in that: The locking mechanism includes a slot (12) and a locking bolt (120); The strip groove (12) is opened at the free end of the support body (1) and vertically penetrates the blind hole (11). The strip groove (12) divides the free end of the support body (1) into two spring pieces. One of the spring pieces has a through hole (121), and the other spring piece has a threaded hole (122). The locking bolt (120) passes through the through hole (121) and is screwed into the threaded hole (122).

3. The diamond seat for a slicing machine according to claim 1, characterized in that: A calibration bolt (4) is screwed onto the support body (1); The upper end face of the calibration platform (30) is integrally formed with a stud (40), and the stud (40) is screwed to the rotating arm (31); The central axis of the calibration bolt (4), the central axis of the stud (40), and the central axis of the mounting post (3) are parallel to each other; When the calibration platform (30) rotates above the calibration bolt (4), the upper end face of the calibration bolt (4) abuts against the lower end face of the calibration platform (30).

4. A diamond holder for a shredder according to claim 1, characterized in that: The diamond (20) is conical, and the central axis of the diamond (20) is coaxial with the central axis of the diamond pen (2). The angle between the central axis of the diamond (20) and the lower end face of the calibration platform (30) is α, which is less than 90° and greater than the angle between the generatrix of the cone and the central axis.

5. A diamond holder for a shredder according to claim 4, characterized in that: The upper sidewall of the diamond pen (2) is provided with several markings (210) above the support body (1), and the markings (210) are evenly distributed along the central axis of the diamond pen (2).

6. A diamond holder for a shredder according to claim 5, characterized in that: The number of the identifiers (210) is even.

7. A diamond holder for a shredder according to claim 6, characterized in that: The number of the identifiers (210) is eight.

8. A diamond holder for a shredder according to claim 7, characterized in that: The diamond pen (2) has eight marking surfaces (21) evenly distributed on the upper side wall, and the marking (210) is set on the marking surface (21).

9. A diamond holder for a shredder according to claim 8, characterized in that: The identifier (210) is a number, and the number is arranged clockwise in the order of "1", "6", "4", "8", "2", "5", "3", "7".

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