Cutting device for sealing strip production and processing

Abstract

The utility model relates to the technical field of sealing strips, in particular to a cutting device for producing and processing sealing strips, which comprises a working table, a cutting box is fixedly arranged at the top of the working table, a cutting component is arranged in an inner cavity of the cutting box, and the cutting component comprises a hollow limiting rod. The two ends of the hollow limiting rod are fixedly connected with the two sides of an inner cavity of the cutting box, a two-way screw is arranged in the inner cavity of the hollow limiting rod, the surface of the two-way screw does not make contact with the hollow limiting rod, one end of the surface of the two-way screw is sleeved with a threaded sleeve in a threaded mode, and the threaded sleeve is fixedly arranged in the inner cavity of the left side of the cutting box. A motor is fixedly arranged at one end of the two-way screw rod, one side of the motor is fixedly connected with the left side of the cutting box, and when the cutting distance is adjusted, the width, needing to be cut, of the sealing strip is determined firstly, then the limiting bolt is unscrewed, and limiting between the cutting base and the limiting rod is relieved.

Description

Technical Field

[0001] This utility model relates to the field of sealing strip technology, specifically a cutting device for the production and processing of sealing strips. Background Technology

[0002] Sealing strips are products used to seal something, making it difficult to open, and serving functions such as shock absorption, waterproofing, sound insulation, heat insulation, dust prevention, and fixation. They are widely used in many fields such as automobiles, doors and windows, cabinets, and containers, and are an important component to ensure the sealing performance of equipment or spaces. Sealing strips are made of various materials, including rubber, paper, metal, and plastic, and different materials have different characteristics and application scenarios.

[0003] When processing sealing strips, a cutting device is required. However, this device cannot adjust the cutting spacing and depth, making it impossible to cut sealing strips of different widths and depths. This necessitates changing different cutting equipment during production to accommodate varying sealing strip specifications, thereby increasing production costs and reducing cutting efficiency. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a cutting device for the production and processing of sealing strips. It has the advantages of being able to adjust the cutting spacing and depth, thereby cutting sealing strips of different widths and depths, and solving the problem that the cutting device cannot adapt to sealing strips of different widths and depths.

[0005] This utility model discloses a cutting device for manufacturing and processing sealing strips, comprising a workbench, a cutting box fixedly mounted on the top of the workbench, a cutting assembly disposed within the inner cavity of the cutting box, and a hollow limiting rod. Both ends of the hollow limiting rod are fixedly connected to the sides of the inner cavity of the cutting box. A bidirectional screw is disposed within the inner cavity of the hollow limiting rod, and the surface of the bidirectional screw does not contact the hollow limiting rod. A threaded sleeve is threaded onto one end of the surface of the bidirectional screw, and the threaded sleeve is fixedly disposed within the inner cavity on the left side of the cutting box. A motor is fixedly mounted onto one end of the bidirectional screw, and one side of the motor is fixedly connected to the left side of the cutting box. Threaded sleeves are threaded onto both sides of the surface of the bidirectional screw, and a slider is fixedly mounted on the top of each threaded sleeve. The surface of the limiting rod has a groove for cooperating with the slider. A mounting block is fixedly mounted on the top of the slider, and the mounting block is movably fitted onto the surface of the hollow limiting rod. An electric telescopic rod is inserted through the inner cavity of the mounting block. A mounting frame is fixedly mounted on the bottom of the electric telescopic rod. A drive motor is fixedly mounted on one side of the mounting frame. A rotating rod is fixedly connected to one end of the drive motor. A mounting knife holder is fixedly fitted at the center of the rotating rod's surface. A circular knife is fixedly fitted onto the surface of the mounting knife holder. A first movable sleeve is movably fitted onto one end of the rotating rod, and the first movable sleeve is fixedly located in the inner cavity of one side of the mounting frame. A second movable sleeve is movably fitted onto the other end of the mounting knife holder, and the second movable sleeve is fixedly located in the inner cavity of the mounting frame. The cutting... An auxiliary cutting component is located below the main assembly. When adjusting the cutting spacing, first determine the required width of the sealing strip to be cut. Then, loosen the limiting bolt to release the limit between the cutting seat and the limiting rod. After moving the cutting seat to the appropriate position according to the measuring ruler, tighten the limiting bolt to limit the cutting seat. Then, the motor starts, driving the bidirectional screw to rotate. The bidirectional screw rotation drives the screw sleeve to move, which in turn drives the slider to move. The slider moves through the sliding groove, which in turn drives the mounting block to move. The mounting block moves the electric telescopic rod, which in turn drives the mounting frame. The mounting frame moves the drive motor, rotating rod, mounting knife holder, and circular knife, thus adjusting the spacing between the circular knives and the cutting depth. When the electric telescopic rod is activated, it moves the mounting frame, which in turn moves the drive motor, rotating rod, mounting knife holder, and circular knife, adjusting the circular knife to the appropriate position. Then, the electric push rod is activated, moving the push plate. The push plate moves via a sliding block and sliding groove, which in turn moves the limiting plate, which in turn moves the limiting rod, moving the cutting seat to the appropriate position. When cutting the sealing strip, the drive motor is activated, rotating the rotating rod. The rotating rod, in conjunction with the first and second movable sleeves, rotates, causing the mounting knife holder to rotate, which in turn rotates the circular knife, cutting the sealing strip.By adjusting the cutting spacing and depth, the cutting device can adapt to the cutting needs of sealing strips of different sizes. This allows for precise cutting of sealing strips of varying widths and depths according to production requirements, meeting diverse production needs. Furthermore, the use of sharp circular blades ensures a smooth and efficient cutting process, improving both product quality and cutting efficiency.

[0006] This utility model discloses a cutting device for manufacturing and processing sealing strips. The auxiliary cutting component includes an electric push rod, the bottom of which is fixedly connected to the top of a worktable. A push plate is fixedly mounted on the top of the electric push rod, and limit plates are fixedly mounted on both sides of the top of the push plate. A limit rod is fixedly connected between the two limit plates, and a cutting seat is fitted on both sides of the surface of the limit rod. A limit screw hole is formed in the inner cavity of the cutting seat, and a limit bolt is threaded into the inner cavity of the limit screw hole. The cutting seat is fixedly connected to the limit rod via the limit bolt. By cooperating with the cutting component, the auxiliary cutting component performs cutting, achieving precise cutting of the sealing strip, ensuring product quality, and improving cutting efficiency.

[0007] This utility model discloses a cutting device for manufacturing and processing sealing strips. Sliding blocks are fixedly installed on both the left and right sides of the push plate, and sliding grooves that cooperate with the sliding blocks are opened on both sides of the inner cavity of the cutting box. The push plate moves in cooperation with the sliding blocks and sliding grooves, which increases the stability of the push plate during operation and avoids the problem of the push plate shaking during operation, thus affecting the cutting efficiency.

[0008] This utility model discloses a cutting device for the production and processing of sealing strips. The surface of the push plate is provided with a measuring ruler, which is used in conjunction with the cutting seat. By setting the measuring ruler, the user can easily adjust the distance between the cutting seats according to the production needs, which increases the convenience of operation and thus improves work efficiency.

[0009] This utility model discloses a cutting device for producing and processing sealing strips. The four corners of the bottom of the workbench are fixedly provided with support legs, and the bottom of the support legs is provided with anti-slip pads. By providing support legs and anti-slip pads, the stability of the workbench during operation is increased, thereby increasing the stability of the cutting device, ensuring the stable operation of the cutting work, and further improving the cutting efficiency.

[0010] This utility model discloses a cutting device for manufacturing and processing sealing strips, wherein the number of cutting seats is two, and the surface of the cutting seats is provided with a cutting groove for cooperating with a circular knife. By setting the cutting groove to cooperate with the circular knife, the cutting trajectory of the circular knife is fixed and guided, thereby achieving precise cutting of the sealing strip, ensuring cutting accuracy and improving cutting quality.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. When adjusting the cutting spacing, first determine the required cutting width of the sealing strip. Then, loosen the limiting bolt to release the limit between the cutting seat and the limiting rod. After moving the cutting seat to the appropriate position according to the measuring ruler, tighten the limiting bolt to limit the cutting seat. Then, start the motor, which drives the bidirectional screw to rotate. The bidirectional screw rotates, which drives the screw sleeve to move. The screw sleeve moves, which drives the slider to move. The slider moves through the sliding groove, which drives the mounting block to move. The mounting block moves, which drives the electric telescopic rod to move. The electric telescopic rod moves, which drives the mounting frame to move. The mounting frame moves, which drives the drive motor, rotating rod, mounting knife holder, and circular knife to move. This allows the spacing between the circular knives to be adjusted. When adjusting the cutting depth, the electric telescopic rod starts, which drives the mounting frame to move. The mounting frame moves, which drives the drive motor, rotating rod, mounting knife holder, and circular knife to move. This allows the circular knife to be adjusted to the appropriate position. Then, the electric push rod is activated, driving the push plate to move. The push plate moves in conjunction with the sliding block and sliding groove, which in turn moves the limiting plate, which in turn moves the limiting rod. The limiting rod then moves the cutting seat to the appropriate position. When cutting the sealing strip, the drive motor is activated, driving the rotating rod to rotate. The first and second movable sleeves work together to rotate the rotating rod, which in turn drives the mounting knife holder to rotate. The rotating knife holder then drives the circular knife to rotate, thus cutting the sealing strip. By adjusting the cutting spacing and depth, the cutting device can adapt to the cutting needs of sealing strips of different sizes. This allows for precise cutting of sealing strips of different widths and depths according to production requirements, meeting diverse production needs. Simultaneously, the sharp circular knife ensures a smooth and efficient cutting process, improving product quality and cutting efficiency.

[0013] 2. This utility model achieves precise cutting of the sealing strip by using an auxiliary cutting component in conjunction with the cutting component, ensuring product quality and improving cutting efficiency;

[0014] The sliding plate moves in conjunction with the sliding block and sliding groove, which increases the stability of the push plate during operation and avoids the problem of the push plate shaking during operation, thus affecting the cutting efficiency.

[0015] By setting a measuring ruler, users can easily adjust the distance between the cutting seats according to production needs, which increases the convenience of operation and thus improves work efficiency.

[0016] By setting up support legs and anti-slip pads, the stability of the workbench during operation is increased, which in turn increases the stability of the cutting device, ensuring the stable operation of the cutting work and further improving the cutting efficiency.

[0017] By setting a groove to work in conjunction with a circular cutter, the cutting trajectory of the circular cutter is fixed and guided, thereby achieving precise cutting of the sealing strip, ensuring cutting accuracy and improving cutting quality. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a cross-sectional view of the cutting box of this utility model;

[0021] Figure 3 This is a schematic diagram of the cutting component structure of this utility model.

[0022] Figure 4 This is a cross-sectional view of the hollow limiting rod of this utility model;

[0023] Figure 5 This is a schematic diagram of the internal structure of the mounting frame of this utility model;

[0024] Figure 6 This is a schematic diagram of the auxiliary cutting component structure of this utility model.

[0025] In the diagram: 1. Workbench; 2. Cutting box; 3. Cutting assembly; 301. Motor; 302. Bidirectional screw; 303. Threaded sleeve; 304. Hollow limit rod; 305. Threaded sleeve; 306. Slider; 307. Mounting block; 308. Electric telescopic rod; 309. Mounting frame; 310. Drive motor; 311. Rotating rod; 312. Mounting knife holder; 313. Circular knife; 314. First movable sleeve; 315. Second movable sleeve; 316. Slide groove; 4. Auxiliary cutting assembly; 401. Electric push rod; 402. Push plate; 403. Limiting plate; 404. Limiting rod; 405. Cutting seat; 406. Limiting screw hole; 407. Limiting bolt; 408. Sliding block; 5. Measuring ruler; 6. Sliding groove; 7. Support leg. Detailed Implementation

[0026] The following drawings will disclose several embodiments of this utility model. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit this utility model. That is, in some embodiments of this utility model, these practical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0027] Please see Figure 1-6This utility model discloses a cutting device for manufacturing and processing sealing strips, comprising a workbench 1, a cutting box 2 fixedly mounted on the top of the workbench 1, a cutting assembly 3 disposed within the inner cavity of the cutting box 2, and a hollow limiting rod 304, the two ends of which are fixedly connected to the two sides of the inner cavity of the cutting box 2. A bidirectional screw 302 is disposed within the inner cavity of the hollow limiting rod 304, and the surface of the bidirectional screw 302 does not contact the hollow limiting rod 304. A threaded sleeve 303 is threaded onto one end of the surface of the bidirectional screw 302 and fixedly disposed within the inner cavity on the left side of the cutting box 2. A motor 301 is fixedly mounted on one end of the bidirectional screw 302, and one side of the motor 301 is fixedly connected to the left side of the cutting box 2. Screw sleeves 305 are threaded onto both sides of the surface of screw 302. A slider 306 is fixedly mounted on the top of the screw sleeve 305. A groove 316 for cooperating with the slider 306 is opened on the surface of the hollow limiting rod 304. A mounting block 307 is fixedly mounted on the top of the slider 306 and is movably sleeved on the surface of the hollow limiting rod 304. An electric telescopic rod 308 is passed through the inner cavity of the mounting block 307. A mounting frame 309 is fixedly mounted on the bottom of the electric telescopic rod 308. A drive motor 310 is fixedly mounted on one side of the mounting frame 309. A rotating rod 311 is fixedly connected to one end of the drive motor 310. A mounting tool holder 312 is fixedly sleeved at the center of the surface of the rotating rod 311. The surface of the mounting tool holder 312... A circular blade 313 is fixedly sleeved. A first movable sleeve 314 is movably sleeved on one end of the rotating rod 311, and the first movable sleeve 314 is fixedly set in the inner cavity of one side of the mounting frame 309. A second movable sleeve 315 is movably sleeved on the other end of the mounting blade holder 312, and the second movable sleeve 315 is fixedly set in one side of the inner cavity of the mounting frame 309. An auxiliary cutting component 4 is set below the cutting component 3. When adjusting the cutting spacing, first determine the width of the sealing strip to be cut, then loosen the limiting bolt 407 to release the limit between the cutting seat 405 and the limiting rod 404. After moving the cutting seat 405 to the appropriate position according to the measuring ruler 5, tighten the limiting bolt 407 to limit the cutting seat 405. Then the motor 301 starts. The movement of the screw 302 is driven by the motor 301, which in turn drives the screw sleeve 305 to move. The movement of the screw sleeve 305 then drives the slider 306 to move, which in turn moves the slide groove 316. The slider 306 then moves the mounting block 307, which in turn moves the electric telescopic rod 308. The electric telescopic rod 308 then moves the mounting frame 309, which in turn moves the drive motor 310, the rotating rod 311, the mounting knife holder 312, and the circular knife 313. This allows for adjustment of the spacing between the circular knives 313. When adjusting the cutting depth, the electric telescopic rod 308 is activated, which in turn moves the mounting frame 309.The movement of the mounting frame 309 drives the drive motor 310, rotating rod 311, mounting knife holder 312, and circular knife 313 to move, thus adjusting the circular knife 313 to a suitable position. Then, the electric push rod 401 is activated, driving the push plate 402 to move. The sliding block 408 and sliding groove 6 cooperate to move the push plate 402, which in turn drives the limiting plate 403 to move. The limiting plate 403 in turn drives the limiting rod 404 to move, thus moving the cutting seat 405 to a suitable position. When cutting the sealing strip, the drive motor 310 is activated, driving the rotating rod 311 to move. The device rotates via the first movable sleeve 314 and the second movable sleeve 315 in conjunction with the rotating rod 311. The rotation of the rotating rod 311 drives the mounting knife holder 312 to rotate, which in turn drives the circular knife 313 to rotate. The rotating circular knife 313 then cuts the sealing strip. By adjusting the cutting spacing and depth, the cutting device can adapt to the cutting needs of sealing strips of different sizes. This allows for precise cutting of sealing strips of varying widths and depths according to production requirements, meeting diverse production needs. Simultaneously, the sharp circular knife 313 ensures a smooth and efficient cutting process, improving product quality and cutting efficiency.

[0028] The auxiliary cutting component 4 includes an electric push rod 401. The bottom of the electric push rod 401 is fixedly connected to the top of the worktable 1. A push plate 402 is fixedly installed on the top of the electric push rod 401. Limiting plates 403 are fixedly installed on both sides of the top of the push plate 402. A limiting rod 404 is fixedly connected between the two limiting plates 403. A cutting seat 405 is sleeved on both sides of the surface of the limiting rod 404. A limiting screw hole 406 is opened in the inner cavity of the cutting seat 405. A limiting bolt 407 is threadedly connected to the inner cavity of the limiting screw hole 406. The cutting seat 405 is fixedly connected to the limiting rod 404 through the limiting bolt 407. By cooperating with the cutting component 3, the auxiliary cutting component 4 performs cutting, realizing the precise cutting of the sealing strip, ensuring product quality, and improving cutting efficiency.

[0029] Sliding blocks 408 are fixedly installed on both the left and right sides of the push plate 402. Sliding grooves 6 that cooperate with the sliding blocks 408 are opened on both sides of the inner cavity of the cutting box 2. The push plate 402 moves in cooperation with the sliding blocks 408 and the sliding grooves 6, which increases the stability of the push plate 402 during the working process and avoids the problem of the push plate 402 shaking during the working process, thus affecting the cutting efficiency.

[0030] The surface of the push plate 402 is provided with a measuring ruler 5, which is used in conjunction with the cutting seat 405. By setting the measuring ruler 5, the user can easily adjust the distance between the cutting seats 405 according to production needs, which increases the convenience of operation and thus improves work efficiency.

[0031] Support legs 7 are fixedly installed at the four corners of the bottom of the workbench 1, and anti-slip pads are installed at the bottom of the support legs 7. By setting support legs 7 and anti-slip pads, the stability of the workbench 1 during the working process is increased, thereby increasing the stability of the cutting device, ensuring the stable operation of the cutting work, and further improving the cutting efficiency.

[0032] There are two cutting seats 405, and the surface of the cutting seat 405 is provided with a cutting groove for use with the circular knife 313. By setting the cutting groove to work with the circular knife 313, the cutting trajectory of the circular knife 313 is fixed and guided, thereby achieving precise cutting of the sealing strip, ensuring cutting accuracy and improving cutting quality.

[0033] When using this utility model: When adjusting the cutting spacing, first determine the width of the sealing strip to be cut, then loosen the limiting bolt 407 to release the limitation between the cutting seat 405 and the limiting rod 404. After moving the cutting seat 405 to the appropriate position according to the measuring ruler 5, tighten the limiting bolt 407 to limit the cutting seat 405. Then, the motor 301 starts, driving the bidirectional screw 302 to rotate. The rotation of the bidirectional screw 302 drives the threaded sleeve 305 to move, which in turn drives the slider 306 to move. The slider 306 moves through the sliding groove 316. The movement of slider 306 moves mounting block 307, which in turn moves electric telescopic rod 308, which in turn moves mounting frame 309, which in turn moves drive motor 310, rotating rod 311, mounting knife holder 312, and circular knife 313. This allows adjustment of the spacing between the circular knives 313. When adjusting the cutting depth, electric telescopic rod 308 is activated, moving mounting frame 309, which in turn moves drive motor 310, rotating rod 311, mounting knife holder 312, and circular knife 313. 13. Move the circular blade 313 to the appropriate position. Then, start the electric push rod 401, which drives the push plate 402 to move. The sliding block 408 and the sliding groove 6 cooperate to move the push plate 402. The movement of the push plate 402 drives the limit plate 403 to move. The movement of the limit plate 403 drives the limit rod 404 to move. The movement of the limit rod 404 moves the cutting seat 405 to the appropriate position. When cutting the sealing strip, start the drive motor 310, which drives the rotating rod 311 to rotate. The first movable sleeve 314 and the second movable sleeve... The rotating rod 311 rotates in conjunction with the 315, which in turn drives the mounting knife holder 312 to rotate. The rotating knife holder 312 then drives the circular knife 313 to rotate, thus cutting the sealing strip. By adjusting the cutting spacing and depth, the cutting device can adapt to the cutting needs of sealing strips of different sizes. This allows for precise cutting of sealing strips of different widths and depths according to production requirements, meeting diverse production needs. At the same time, the sharp circular knife 313 ensures a smooth and efficient cutting process, improving product quality and cutting efficiency.

[0034] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A cutting device for manufacturing and processing sealing strips, comprising a workbench (1), characterized in that: A cutting box (2) is fixedly installed on the top of the workbench (1). A cutting assembly (3) is installed in the inner cavity of the cutting box (2). The cutting assembly (3) includes a hollow limiting rod (304). The two ends of the hollow limiting rod (304) are fixedly connected to the two sides of the inner cavity of the cutting box (2). A bidirectional screw (302) is installed in the inner cavity of the hollow limiting rod (304). The surface of the bidirectional screw (302) does not contact the hollow limiting rod (304). A threaded sleeve (30) is threaded onto one end of the surface of the bidirectional screw (302). 3), and the threaded sleeve (303) is fixedly installed in the inner cavity on the left side of the cutting box (2). One end of the bidirectional screw (302) is fixedly installed with a motor (301). One side of the motor (301) is fixedly connected to the left side of the cutting box (2). Both sides of the surface of the bidirectional screw (302) are threaded with threaded sleeves (305). The top of the threaded sleeve (305) is fixedly installed with a slider (306). The surface of the hollow limiting rod (304) is provided with a groove (316) that cooperates with the slider (306). A mounting block (307) is fixedly installed on the top of the hollow limiting rod (304), and the mounting block (307) is movably sleeved on the surface of the hollow limiting rod (304). An electric telescopic rod (308) is provided through the inner cavity of the mounting block (307). A mounting frame (309) is fixedly installed at the bottom of the electric telescopic rod (308). A drive motor (310) is fixedly installed on one side of the mounting frame (309). A rotating rod (311) is fixedly connected to one end of the drive motor (310). A mounting bracket is fixedly sleeved at the center of the surface of the rotating rod (311). The mounting knife holder (312) is fixedly fitted with a round knife (313) on its surface. The surface of one end of the rotating rod (311) is movably fitted with a first movable sleeve (314), and the first movable sleeve (314) is fixedly set in the inner cavity of one side of the mounting frame (309). The other end of the mounting knife holder (312) is movably fitted with a second movable sleeve (315), and the second movable sleeve (315) is fixedly set in one side of the inner cavity of the mounting frame (309). An auxiliary cutting component (4) is provided below the cutting component (3).

2. The cutting device for manufacturing and processing sealing strips according to claim 1, characterized in that: The auxiliary cutting component (4) includes an electric push rod (401). The bottom of the electric push rod (401) is fixedly connected to the top of the workbench (1). A push plate (402) is fixedly installed on the top of the electric push rod (401). Limiting plates (403) are fixedly installed on both sides of the top of the push plate (402). A limiting rod (404) is fixedly connected between the two limiting plates (403). A cutting seat (405) is sleeved on both sides of the surface of the limiting rod (404). A limiting screw hole (406) is opened in the inner cavity of the cutting seat (405). A limiting bolt (407) is threaded into the inner cavity of the limiting screw hole (406). The cutting seat (405) is fixedly connected to the limiting rod (404) through the limiting bolt (407).

3. The cutting device for manufacturing and processing sealing strips according to claim 2, characterized in that: Sliding blocks (408) are fixedly provided on both the left and right sides of the push plate (402), and sliding grooves (6) that cooperate with the sliding blocks (408) are provided on both sides of the inner cavity of the cutting box (2).

4. The cutting device for manufacturing and processing sealing strips according to claim 2, characterized in that: The surface of the push plate (402) is provided with a measuring ruler (5), and the measuring ruler (5) is used in conjunction with the cutting seat (405).

5. The cutting device for manufacturing and processing sealing strips according to claim 1, characterized in that: The workbench (1) has four fixed support legs (7) at the bottom corners, and the bottom of the support legs (7) is provided with anti-slip pads.

6. The cutting device for manufacturing and processing sealing strips according to claim 2, characterized in that: There are two cutting seats (405), and the surface of the cutting seat (405) is provided with a cutting groove for use with the circular knife (313).

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