Blade rotary type cut-off machine for PET suction pipe

Abstract

The utility model provides a blade rotary cut-off machine for a PET (Polyethylene Terephthalate) suction tube, which comprises a rack and is characterized in that a rotary cut-off device for rotationally cutting the PET suction tube is arranged inside the rack; a cutter feeding assembly used for being matched with the rotary cutting device is further fixedly installed in the machine frame. The feed assembly is arranged below the rotary cutting device; a driving motor used for driving the rotary cutting device to rotate is further installed in the machine frame through bolts. According to the straw cutting device, a rotary cutting mode is adopted, the blades rotate and cut the straw by a circle at the same time, and the problem that the straw is crushed due to traditional downward-pressing type cutting is effectively solved; by means of rotary cutting, the cutting face is flatter and smoother, the size precision is higher, and the requirement for high quality of the PET straw in the industries of food and beverage, medical treatment and public health and the like is met.

Description

Technical Field

[0001] This utility model relates to the field of straw production equipment, and in particular to a rotary blade cutting machine for PET straws. Background Technology

[0002] Polyethylene terephthalate (PET), as a thermoplastic polyester material, has many excellent properties, such as high strength, wear resistance, chemical corrosion resistance, high transparency, and good biocompatibility. With these properties, PET material has been widely used in the straw manufacturing industry, and PET straws have gradually become the mainstream product in the market.

[0003] PET straws play an indispensable role in many industries such as food and beverage, medical and health, and cosmetics. For example, in the food and beverage industry, PET straws can safely come into contact with various beverages without adversely affecting their taste and quality. In the medical and health field, their good biocompatibility allows them to be used for liquid delivery in some special medical scenarios. However, the material characteristics of PET straws also bring certain challenges to their production and processing. PET material has a certain degree of hardness and toughness, which makes it easy for various problems to occur when processing it using traditional straw cutting methods.

[0004] Traditional straw cutting machines mostly use a downward-pressing cutting blade. When cutting PET straws, this method applies significant pressure due to the hardness and toughness of the PET straws. When the pressure exceeds the limit that the PET straw can withstand, the straw is prone to deformation or even crushing. This not only affects the cutting quality, resulting in uneven cut surfaces and inaccurate dimensions, but also increases the scrap rate and production costs. Utility Model Content

[0005] To address the problem that traditional straw cutting tools in the existing technology cannot adapt to the characteristics of PET straws, resulting in a high scrap rate when cutting PET straws, this utility model provides a rotary blade cutting machine for PET straws.

[0006] This utility model provides a rotary blade cutting machine for PET straws, which adopts the following technical solution:

[0007] A rotary cutting machine for PET straws includes a frame, characterized in that a rotary cutting device for rotary cutting PET straws is provided inside the frame; a feed assembly for cooperating with the rotary cutting device is also fixedly installed inside the frame; the feed assembly is located below the rotary cutting device; and a drive motor for driving the rotary cutting device to rotate is also installed inside the frame by bolts.

[0008] Furthermore, the rotary cutting device includes a main shaft; the main shaft is rotatably mounted inside the frame; the main shaft has a conveying channel for the passage of the suction tube; an inner ring is provided on the outer side of the main shaft; the inner ring and the main shaft are rotatably connected relative to each other via bearings; a turntable is bolted to one radial side wall of the inner ring along the main shaft; an outer finish is bolted to the side wall of the turntable away from the inner ring; two mating wheels are rotatably connected to the outer side wall of the outer finish via bolts and bearings; a mounting groove is provided inside the turntable, and a tool assembly is slidably connected inside the mounting groove; an outer ring for moving the tool assembly inside the turntable is slidably connected to the outer side wall of the inner ring; the tool assembly can be driven by the rotation of the main shaft.

[0009] Furthermore, the end of the main shaft furthest from the turntable is connected to the output end of an external motor, which can rotate after the power is turned on.

[0010] Furthermore, the two mating wheels and the tool assembly are arranged in a circular array around the geometric center of the turntable, and the angles of the lines connecting their centers are all equal.

[0011] Furthermore, the tool assembly includes a drive shaft; a slider is slidably connected within the mounting groove opened in the turntable; a keyed groove is opened inside the outer surface, the drive shaft passes through the groove and the interior of the slider, one end extending to the outer side of the outer surface, and the other end extending to the interior of the inner ring; the drive rod and the slider are rotatably connected relative to each other via bearings; a mounting block is bolted to the end of the drive shaft located on the outer side of the outer surface; a cutting blade is mounted on the outer wall of the mounting block; a spring is fixedly connected between the bottom of the slider and the bottom of the mounting groove; the top of the slider extends to the outside of the groove opening opened inside the turntable, and the top of the slider is set as a slope; the inner wall of the outer ring near the opening of the turntable is milled with a matching bevel angle having the same slope as the top slope of the slider;

[0012] Furthermore, the outer wall of the inner ring is provided with a rolling groove, and a ball is provided in the rolling groove; the outer ring slides relative to the inner ring through the ball;

[0013] Furthermore, a driven gear is fixedly mounted on one end of the drive shaft inside the inner sleeve via a key connection; a driving gear is fixedly mounted on the outer wall of the main shaft via a key connection; the driving gear and the driven gear are meshed when in contact.

[0014] Furthermore, the feed assembly includes a bracket, a cylinder, a push rod, a mounting base, a connecting rod, and a push block. The bracket is bolted to the inside of the frame, and the cylinder is bolted to the top of the bracket. The output end of the cylinder is connected to the push rod. The mounting base is bolted to the outer wall of the push rod. One end of the connecting rod is rotatably connected to the top of the mounting base via a bearing. The other end of the connecting rod is integrally formed with a push block. A pushing groove is formed around the outer wall of the outer ring. The push block is disposed inside the pushing groove, and the linear movement of the push block can drive the outer ring to perform the same linear movement. The cross-section of the pushing groove is trapezoidal. The push block is generally frustum-shaped and has a transitional fit with the pushing groove.

[0015] Furthermore, a transmission pulley is fitted on the outer wall of the inner ring; the transmission pulley is fixedly connected to the inner ring by bolts; the transmission pulley and the output end of the drive motor are connected to each other by a transmission belt.

[0016] Furthermore, the frame is also equipped with a vertical adjustment mechanism for longitudinal adjustment of the rotary cutting device and a horizontal adjustment mechanism for horizontal adjustment of the rotary cutting device.

[0017] In summary, the beneficial effects of this utility model are as follows:

[0018] This invention employs a rotary cutting method, where the blade rotates while cutting around the straw, effectively avoiding the problem of the straw being crushed due to traditional downward cutting. Rotary cutting results in a smoother, flatter cut surface and higher dimensional accuracy, meeting the high-quality requirements of PET straws in the food and beverage, medical and health industries.

[0019] In addition, this invention achieves rapid blade feed and cutting by using a drive motor to rotate the spindle and by using a cylinder to push the push rod, connecting rod and other components in coordination. This significantly improves the cutting speed. Compared with the traditional method of cutting one by one, this technical solution can cut multiple straws continuously, which greatly improves production efficiency and reduces production costs. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the overall structure of the rotary cutting device of this utility model;

[0022] Figure 3 This is a schematic diagram of the internal structure of the rotary cutting device of this utility model;

[0023] Figure 4 This is a schematic diagram showing the cooperation between the rotary cutting device and the feed assembly of this utility model;

[0024] Figure 5 This utility model Figure 4 An enlarged schematic diagram of part A in the middle.

[0025] As shown in the figure: 1-Frame, 11-Vertical adjustment mechanism, 12-Horizontal adjustment mechanism, 2-Rotary cutting device, 21-Main shaft, 211-Conveying channel, 22-Inner collar, 23-Outer collar, 231-Push groove, 24-Turntable, 25-Outer finish, 250-Slide groove, 251-Matching wheel, 252-Tool assembly, 2521-Mounting block, 2522-Blade, 253-Drive shaft, 2531-Slider, 254-Driven gear, 2541-Inclined surface, 2542-Matching angle, 2543-Spring, 255-Drive gear, 26-Transmission pulley; 27-Rolling groove, 28-Ball, 3-Infeed assembly, 31-Bracket, 32-Cylinder, 33-Push rod, 34-Mounting seat, 35-Connecting rod, 36-Push block, 4-Drive motor, 41-Transmission belt. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-5 The present invention will be further described in detail below:

[0027] A rotary cutting machine for PET straws includes a frame 1. The frame 1 contains a rotary cutting device 2 for rotary cutting of PET straws. A feed assembly 3 for cooperating with the rotary cutting device is also fixedly installed inside the frame 1. The feed assembly 3 is positioned below the rotary cutting device 2. A drive motor 4 for driving the rotary cutting device 2 is bolted to the inside of the frame 1. In this embodiment, the PET straw passes through the conveying channel 211 inside the main shaft 21. When the straw extends to a fixed length, the drive motor 4 starts, rotating the rotary cutting device 2 via the transmission belt 41. Simultaneously, the feed assembly 3 drives the rotary cutting device 2 to cut. This structure avoids the problem of traditional downward-pressing cutting blades easily crushing the straw, and improves cutting efficiency and quality through rotary cutting.

[0028] like Figure 2 , 3As shown in Figure 4, the rotary cutting device 2 includes a main shaft 21; the main shaft 21 is rotatably mounted inside the frame 1; a conveying channel 211 for the passage of the suction tube is provided inside the main shaft 21; an inner sleeve 22 is provided on the outer side of the main shaft 21; the inner sleeve 22 and the main shaft 21 are rotatably connected relative to each other by bearings; a turntable 24 is bolted to one radial side wall of the inner sleeve 22 along the main shaft 21; an outer surface 25 is bolted to one side wall of the turntable 24 away from the inner sleeve 22; a mating wheel 251 is rotatably connected to the outer side wall of the outer surface 25 by bolts and bearings; there are two mating wheels 251; the turntable 24 has an opening inside... The device has a mounting groove, inside which a tool assembly 252 is slidably connected. An outer ring 23 is slidably connected to the outer wall of the inner ring 22 to allow the tool assembly 252 to move within the turntable 24. The tool assembly 252 can be driven by the rotation of the spindle 21. In this embodiment, the spindle 21 provides rotational support, the inner ring 22 rotates relative to the spindle 21, the turntable 24, the outer surface 25, and the mating wheel 251 are fixed to the inner ring 22, and the tool assembly 252 slides within the turntable 24, driven by the outer ring 23. When the outer ring 23 moves, it can move the tool assembly 252 towards the suction tube for cutting.

[0029] like Figure 2 , 3 As shown in Figure 4, it is worth noting that the inner part of the mating wheel 251 is provided with a cutting groove that mates with the blade 2522, leaving a certain space for cutting; in addition, the distance between the mating wheel 251 and the center of the turntable 24 is adjustable to accommodate PET straws of different specifications.

[0030] The end of the spindle 21 furthest from the turntable 24 is connected to the output end of an external motor, which can rotate after the power is turned on.

[0031] like Figure 2 , 3 As shown in Figure 4, the two mating wheels 251 and the tool assembly 252 are arranged in a circular array around the geometric center of the turntable 24, with the angles of the connecting lines being equal. In this embodiment, the two mating wheels 251 and the tool assembly 252 are arranged in a circular array around the geometric center of the turntable 24, with the angles of the connecting lines being equal. This distribution ensures the uniformity and stability of the tool assembly 252 during rotation. The three-point distribution design also clamps the suction tube, improving cutting efficiency and quality, and reducing unevenness during the cutting process.

[0032] like Figure 5As shown, the tool assembly 252 includes a drive shaft 253; a slider 2531 is slidably connected in a mounting groove opened in the turntable 24; a keyed groove 250 is opened in the interior of the outer surface 25, the drive shaft 253 passes through the groove 250 and the interior of the slider 2531, one end extends to the outside of the outer surface 25, and the other end extends to the interior of the inner collar 22; the drive rod and the slider 2531 are rotatably connected relative to each other by bearings; a mounting block 2521 is bolted to one end of the drive shaft 253 located on the outside of the outer surface 25; a cutting tool 2522 is mounted on the outer wall of the mounting block 2521; the bottom of the slider 2531 is connected to the bottom of the mounting groove. A spring 2543 is fixedly connected; the top of the slider 2531 extends to the outside of the slot of the mounting groove opened inside the turntable 24, and the top of the slider 2531 is set as an inclined surface 2541; the inner wall of the outer ring 23 near the ring opening of the turntable 24 is milled with a matching chamfer 2542 with the same slope as the top chamfer 2541 of the slider 2531; in this embodiment, when the outer ring 23 moves, the slider 2531 moves down through the action of the inclined surface 2541 and the matching chamfer 2542, thereby driving the drive shaft 253 and the blade 2522 to move; after cutting is completed, the spring 2543 resets the slider 2531 and the blade 2522 leaves the suction tube;

[0033] like Figure 2 , 3 As shown in Figure 4, the outer wall of the inner ring 22 is provided with a rolling groove 27, and a ball 28 is disposed in the rolling groove 27; the outer ring 23 slides relative to the inner ring 22 through the ball 28; in this embodiment, when the outer ring 23 moves under the action of external force, it slides in the rolling groove 27 of the inner ring 22 through the ball 28, which reduces frictional resistance and improves the smoothness and durability of the sliding motion;

[0034] like Figure 4 , 5 As shown, a driven gear 254 is fixedly mounted on one end of the drive shaft 253 inside the inner sleeve 22 via a key connection; a driving gear 255 is fixedly mounted on the outer wall of the main shaft 21 via a key connection; the driving gear 255 and the driven gear 254 are meshed when in contact; in this embodiment, when the slider 2531 moves down to make the driven gear 254 mesh with the driving gear 255, the rotation of the main shaft 21 drives the driven gear 254 and the drive shaft 253 to rotate, thereby driving the blade 2522 to rotate; thus realizing the function of driving the blade 2522 to rotate when the main shaft 21 rotates;

[0035] like Figure 4As shown, the feed assembly 3 includes a bracket 31, a cylinder 32, a push rod 33, a mounting base 34, a connecting rod 35, and a push block 36. The bracket 31 is bolted to the inside of the frame 1, and the cylinder 32 is bolted to the top of the bracket 31. The output end of the cylinder 32 is connected to the push rod 33. The mounting base 34 is bolted to the outer wall of the push rod 33. One end of the connecting rod 35 is rotatably connected to the top of the mounting base 34 via a bearing. The other end of the connecting rod 35 has a push block 36 integrally formed. A pushing groove 231 is formed around the outer wall of the outer ring 23. The push block 36 is disposed inside the pushing groove 231, and the linear movement of the push block 36 can drive the outer ring 23 to perform the same linear movement. The cross-section of 31 is trapezoidal; the push block 36 is frustum-shaped and has a transition fit with the push groove 231; when the cylinder 32 is started, the output end drives the push rod 33 to move, which in turn drives the push block 36 to move in the push groove 231 through the mounting base 34 and the connecting rod 35; causing the outer ring 23 to slide further on the outer wall of the inner ring 22, and through the action of the inclined surface 2541 and the mating angle 2542, the slider 2531 moves down, which in turn drives the drive shaft 253 and the blade 2522 to move; when the slider 2531 moves down and the driven gear 254 meshes with the driving gear 255, the rotation of the main shaft 21 drives the driven gear 254 and the drive shaft 253 to rotate, which in turn drives the blade 2522 to rotate;

[0036] like Figure 1 As shown, a transmission pulley 26 is fitted on the outer wall of the inner ring 22; the transmission pulley 26 is fixedly connected to the inner ring 22 by bolts; the transmission pulley 26 and the output end of the drive motor 4 are connected to each other by a transmission belt 41; in this embodiment, the rotation of the main shaft 21 drives the blade 2522 to rotate, and at the same time, the drive motor 4 drives the inner ring 22 to rotate in the opposite direction of the main shaft 21, so that the blade 2522 rotates while the inner ring 22 rotates as a whole to complete the cutting around the suction tube;

[0037] like Figure 1 As shown, the frame 1 is also equipped with a vertical adjustment mechanism 11 for longitudinal adjustment of the rotary cutting device and a horizontal adjustment mechanism 12 for horizontal adjustment of the rotary cutting device 2. In this embodiment, by adjusting the vertical adjustment mechanism 11 and the horizontal adjustment mechanism 12, the position of the rotary cutting device 2 inside the frame 1 can be adjusted, which improves the flexibility and adaptability of the equipment and meets the cutting requirements of PET straws of different specifications and requirements.

[0038] In the above embodiments, the vertical adjustment mechanism 11 can be adjusted longitudinally by a manual crank or a motor-driven lead screw; the horizontal adjustment mechanism 12 can be adjusted laterally by a guide rail and a locking element.

[0039] The implementation principle of this utility model embodiment is as follows:

[0040] Install the PET straw rotary cutter in a suitable working area, ensuring the frame 1 is stable and all components are tightly connected; connect the power supply and debug the machine, checking whether the drive motor 4, cylinder 32, transmission belt 41, and other components are working properly; adjust the vertical adjustment mechanism 11 and horizontal adjustment mechanism 12 according to the specifications of the PET straw to ensure the position and angle of the rotary cutter 2 are appropriate; guide the PET straw to be cut to the input end of the frame 1, ensuring that the straw can smoothly enter the conveyor channel 211; set the parameters for the straw to extend to a fixed length according to the cutting requirements; connect the main shaft motor power supply to start the main shaft 21 to rotate; the cylinder 32 starts, and the cylinder output end pushes the push rod 33 forward; the push rod 33 drives the push block 36 to move in the push groove 231 through the mounting base 34 and connecting rod 35, and the push block 36 in turn pushes the outer ring 23 to move along the direction of the main shaft 21; the movement of the outer ring 23 is connected by the inclined plane 2541 and the... With the action of the angle 2542, the slider 2531 moves downward within the groove 250 of the inner surface. At the same time, the driven gear 254 of the drive shaft 253 meshes with the driving gear 255 on the main shaft 21. As the main shaft 21 rotates, the driven gear 254 drives the drive shaft 253 and the blade 2522 to rotate, and the blade 2522 begins to cut the PET straw. Simultaneously, the drive motor 4 drives the transmission pulley 26 and the inner collar 22 to rotate in the opposite direction of the main shaft 21 through the transmission belt 41, so that the blade 2522 rotates around the straw to cut. When the blade 2522 completes the cut, the output end of the cylinder 32 retracts, and the push rod 33, mounting base 34, connecting rod 35 and push block 36 return to their original positions. Under the action of the spring 2543, the slider 2531 and the blade 2522 move upward and leave the straw, completing one cut. The cut straw falls out from the output end of the frame 1, ready for the next round of cutting or subsequent processing.

[0041] Collect the cut PET straws and organize or package them as needed; clean the inside of the frame 1 and the cutting area to ensure the machine is clean and tidy, with no residue affecting the next use; regularly check whether the machine parts are worn or loose, and replace or tighten them in time; clean the transmission belt 41, ball bearings 28 and other parts to maintain their good lubrication and operation; perform necessary maintenance and upkeep on the cylinder 32, drive motor 4 and other parts to ensure the long-term stable operation of the machine.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. The various components mentioned in this utility model are common technologies in the existing field. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A rotary cutter for cutting PET straws, comprising a frame (1), characterized in that The inside of the frame (1) is provided with a rotary cutting device (2) for rotary cutting of PET straws; the inside of the frame (1) is also fixedly provided with a feed assembly (3) for cooperating with the rotary cutting device (2); the feed assembly (3) is arranged below the rotary cutting device (2); the inside of the frame (1) is also bolted with a driving motor (4) for driving the rotary cutting device (2) to rotate.

2. The rotary cutter for cutting PET straw blades according to claim 1, characterized in that The rotary cutting device (2) comprises a main shaft (21); the main shaft (21) is rotatably arranged in the frame (1); the inside of the main shaft (21) is provided with a conveying channel (211) for the straw to pass through; the outside of the main shaft (21) is provided with an inner sleeve ring (22); the inner sleeve ring (22) and the main shaft (21) are relatively rotatably connected through a bearing; the radial side wall of the inner sleeve ring (22) along the main shaft (21) is bolted with a rotating disc (24); the side wall of the rotating disc (24) away from the inner sleeve ring (22) is bolted with an outer veneer (25); the outer side wall of the outer veneer (25) is rotatably connected with a cooperating wheel (251) through a bolt and a bearing; the number of the cooperating wheel (251) is two; the inside of the rotating disc (24) is provided with an installation groove, and the inside of the installation groove is slidably connected with a cutter assembly (252); the outer side wall of the inner sleeve ring (22) is slidably connected with an outer sleeve ring (23) for moving the cutter assembly (252) in the rotating disc (24); the cutter assembly (252) can be driven by the rotation of the main shaft (21).

3. The rotary cutter for cutting PET straw blades according to claim 2, characterized in that The end of the main shaft (21) away from the rotating disc (24) is connected with the output end of an external motor, which can be rotated after the power is turned on.

4. The rotary cutter for cutting PET straw blades according to claim 2, characterized in that The two cooperating wheels (251) and cutter assemblies (252) are distributed in a circular array around the geometric center of the rotating disc (24), and the central connecting lines are equal in angle.

5. The rotary cutter for cutting PET straw blades according to claim 4, characterized in that The cutter assembly (252) comprises a driving shaft (253), a sliding block (2531) slidably connected in a mounting groove in the rotary disc (24), a circular-key-shaped sliding groove (250) formed in the inner part of the outer veneer (25), the driving shaft (253) penetrating the inner parts of the sliding groove (250) and the sliding block (2531) and extending to the outside of the outer veneer (25) at one end and to the inside of the inner sleeve ring (22) at the other end, the relative rotation between the driving rod and the sliding block (2531) being connected through a bearing, the end of the driving shaft (253) arranged outside the outer veneer (25) being provided with a mounting block (2521) through bolting, the outer sidewall of the mounting block (2521) being provided with a blade (2522), the bottom of the sliding block (2531) being fixedly connected with the bottom of the mounting groove through a spring (2543), the top of the sliding block (2531) extending to the outside of the notch of the mounting groove formed in the inside of the rotary disc (24), the top of the sliding block (2531) being arranged as an inclined surface (2541), and the inner sidewall of the ring notch of the outer sleeve ring (23) being milled with a matching inclined angle (2542) having the same slope as the inclined surface (2541) of the top of the sliding block (2531).

6. A knife rotary cutter for PET straws according to claim 5, characterized in that The outer sidewall of the inner sleeve ring (22) is provided with a rolling groove (27), and the rolling groove (27) is provided with a ball (28).

7. The knife rotary cutter for PET straw according to claim 5, characterized in that The end of the driving shaft (253) arranged inside the inner sleeve ring (22) is fixedly provided with a driven gear (254) through key connection, the outer sidewall of the main shaft (21) is fixedly provided with a driving gear (255) through key connection, and the driving gear (255) and the driven gear (254) are in meshing relationship when in contact.

8. The rotary cutter for cutting PET straw blades according to claim 4, characterized in that The feed assembly (3) comprises a bracket (31), a cylinder (32), a push rod (33), a mounting seat (34), a connecting rod (35), and a push block (36), the inside of the frame (1) is fixedly provided with the bracket (31) through bolting, and the top of the bracket (31) is provided with the cylinder (32) through bolting; the output end of the cylinder (32) is connected with the push rod (33); the outer sidewall of the push rod (33) is provided with the mounting seat (34) through bolting; one end of the connecting rod (35) is rotatably connected with the top of the mounting seat (34) through a bearing; the other end of the connecting rod (35) is integrally formed with the push block (36); the outer sidewall of the outer sleeve ring (23) is provided with a pushing groove (231) around the circumference; the push block (36) is arranged inside the pushing groove (231), and the linear motion of the push block (36) can drive the outer sleeve ring (23) to make the same linear motion; the cross section of the pushing groove (231) is a trapezoidal structure; the push block (36) is in the form of a circular truncated cone structure and is in transition fit with the pushing groove (231).

9. The knife rotary cutter for PET straw according to claim 4, characterized in that The inner sleeve ring (22) is sleeved with a transmission pulley (26) on the outer wall; the transmission pulley (26) is fixedly connected with the inner sleeve ring (22) through bolts; the transmission pulley (26) and the output end of the driving motor (4) are connected with each other through a transmission belt (41).

10. The rotary cutter for cutting PET straw blades according to claim 1, characterized in that The inside of the frame (1) is also provided with a vertical adjusting mechanism (11) for longitudinal adjustment of the rotary cutting device (2), and a horizontal adjusting mechanism (12) for horizontal adjustment of the rotary cutting device (2).

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