Circular knife machine

Abstract

The utility model discloses a circular knife machine which comprises a plurality of circular knife work stations, each circular knife work station comprises a circular knife die cutting and slitting work station, each circular knife die cutting and slitting work station comprises a mounting seat and a slitting mechanism, a roller set is arranged on each mounting seat, and the roller sets are used for die cutting of film materials; and the slitting mechanism is arranged on the mounting base and located on the feeding side and / or the discharging side of the roller set, and the slitting mechanism comprises a cutter used for slitting the film material. When the film material needs to be split, a circular knife work station with a driving knife roll for splitting does not need to be additionally arranged, so that the number of the arranged circular knife work stations is reduced, the overall structure of the circular knife machine is simplified, and the manufacturing cost of the circular knife machine is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of die cutting, in particular to a circular knife machine. Background Art

[0002] The circular knife machine, also known as a multi-station rotary die-cutting machine, uses a control system and a tool in combination. It has a high degree of automation and can achieve multi-station simultaneous cutting and processing. The circular knife machine is widely used in production and processing because of its excellent production efficiency. In the process of producing and processing materials with a circular knife machine, the width of raw materials and composite materials often needs to be temporarily shortened to increase the yield or adapt to changes in the production environment. In order to solve this problem, a circular knife station with an active knife roller for slitting is often added to the circular knife machine for slitting. However, this method wastes the circular knife station, making the circular knife machine structure more complicated and more expensive. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a circular knife machine with a simpler structure.

[0004] A circular knife machine according to an embodiment of the utility model includes a plurality of circular knife stations, the circular knife stations include a circular knife die-cutting and slitting station, the circular knife die-cutting and slitting station includes a mounting seat and a slitting mechanism, a roller group is arranged on the mounting seat, and the roller group is used for die-cutting film materials; the slitting mechanism is arranged on the mounting seat and is located on the feed side and / or the discharge side of the roller group, and the slitting mechanism includes a cutting knife for slitting the film material.

[0005] A circular knife machine according to an embodiment of the utility model has at least the following technical effects:

[0006] Since the circular knife machine in the present application includes a circular knife die-cutting and slitting station, and the circular knife die-cutting and slitting station also includes a roller group for die-cutting film materials and a slitting mechanism for slitting film materials, during the use of the circular knife machine in the present application, the roller group in the circular knife die-cutting and slitting station can perform die-cutting processing on the film materials, and the circular knife die-cutting and slitting station is provided with a slitting mechanism at the feed side and / or the discharge side of the roller group. When the film material passes through the circular knife die-cutting and slitting station, the slitting mechanism in the circular knife die-cutting and slitting station can slitting the film material. From the above, it can be known that when the film material needs to be slitting in the present circular knife machine, there is no need to add an additional circular knife station with an active knife roller for slitting, thereby reducing the number of circular knife stations, simplifying the overall structure of the circular knife machine, and reducing the manufacturing cost of the circular knife machine.

[0007] According to some embodiments of the utility model, a circular knife machine, the slitting mechanism also includes a knife seat, the knife seat includes a first clamping part, a second clamping part, a mounting part and a locking structure, the first clamping part and the second clamping part are arranged in parallel on the mounting part, a clamping area is formed between the first clamping part and the second clamping part, the cutter part is arranged in the clamping area, the locking structure connects the first clamping part and the second clamping part, and is used to provide a locking force that enables the first clamping part and the second clamping part to cooperate to clamp the cutter.

[0008] According to a circular knife machine in some embodiments of the utility model, the locking structure includes a locking screw, which passes through the first clamping part and is threadedly connected to the second clamping part.

[0009] According to some embodiments of the utility model, a circular knife machine, the knife seat also includes a first deformation portion, one end of the first clamping portion close to the mounting portion is connected to the mounting portion through the first deformation portion, the first clamping portion, the first deformation portion and the mounting portion jointly define a first avoidance groove, and the first avoidance groove connects the clamping area.

[0010] According to some embodiments of the utility model, a circular knife machine, the knife seat also includes a second deformation portion, one end of the second clamping portion close to the mounting portion is connected to the mounting portion through the second deformation portion, the second clamping portion, the second deformation portion and the mounting portion jointly define a second avoidance groove, and the second avoidance groove connects the clamping area.

[0011] According to a circular knife machine in some embodiments of the utility model, the slitting mechanism also includes a mounting frame, the mounting frame includes a mounting shaft, a mounting through hole is formed on the mounting portion, the mounting through hole is penetrated by the mounting shaft, a gap is opened on the hole wall of the mounting through hole, and the two ends of the knife seat in the width direction of the gap are connected by an adjusting piece, and the adjusting piece is used to adjust the width of the gap.

[0012] According to a circular knife machine in some embodiments of the utility model, the mounting frame also includes a fixed block and a rotating rod, one end of the rotating rod is connected to the mounting shaft, the other end of the rotating rod is rotatably connected to the fixed block, and the fixed block is connected to the mounting seat.

[0013] According to some embodiments of the utility model, a circular knife machine, the mounting seat includes a base, a first mounting plate and a second mounting plate, the first mounting plate and the second mounting plate are respectively arranged on opposite sides of the base, the roller group includes a plurality of circular rollers, the opposite ends of the circular rollers are respectively rotatably connected to the first mounting plate and the second mounting plate, the first mounting plate is provided with a first mounting groove, and the fixing block is arranged in the first mounting groove.

[0014] According to a circular knife machine in some embodiments of the utility model, a first mounting plate is provided with a plurality of first mounting grooves along a height direction.

[0015] According to a circular knife machine in some embodiments of the utility model, the fixed block includes a hinged portion and a connecting portion, the hinged portion is connected to the rotating rod, the connecting portion is arranged in the first mounting groove, and the circumferential surface contour of the connecting portion is adapted to the groove wall contour setting of the first mounting groove.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 This is a schematic structural diagram of a circular knife machine according to one embodiment of the present utility model;

[0019] Figure 2 It is a three-dimensional structural schematic diagram of the mounting base of the utility model;

[0020] Figure 3 for Figure 2 A schematic diagram of the structure of the striping mechanism in FIG.

[0021] Figure 4 for Figure 3 Schematic diagram of the connection structure between the knife holder and the cutter;

[0022] Figure 5 for Figure 3 Schematic diagram of the structure of the fixed block in.

[0023] Reference numerals:

[0024] The circular knife station 10, the first circular knife station 10A, the second circular knife station 10B, the third circular knife station 10C, the mounting seat 100, the roller group 110, the circular roller 111, the base 120, the first mounting plate 130, the first mounting groove 131, and the second mounting plate 140;

[0025] The slitting mechanism 200, the cutting knife 210, the knife seat 220, the first clamping portion 221, the second clamping portion 222, the first insertion hole 223, the mounting portion 224, the mounting through hole 224a, the gap 224b, the second insertion hole 224c, the clamping area 225, the first deformation portion 226, the first avoidance groove 227, the second deformation portion 228, the second avoidance groove 229, the mounting frame 230, the mounting shaft 231, the fixing block 232, the hinged portion 232a, the connecting portion 232b, and the rotating rod 233. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, left, right, front, back, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] In the description of the utility model, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0029] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0030] Reference below Figures 1 to 5 A circular knife machine according to an embodiment of the utility model is described in detail.

[0031] In an embodiment of the utility model, a circular knife machine includes a plurality of circular knife stations 10, the circular knife stations 10 include a circular knife die-cutting and slitting station, the circular knife die-cutting and slitting station includes a mounting seat 100 and a slitting mechanism 200, a roller group 110 is arranged on the mounting seat 100, and the roller group 110 is used to die-cut the film material; the slitting mechanism 200 is arranged on the mounting seat 100 and is located on the feed side and / or the discharge side of the roller group 110, and the slitting mechanism 200 includes a cutter 210 for slitting the film material.

[0032] For example, Figure 1 and Figure 2 As shown, the circular knife machine includes three circular knife stations 10, which are respectively a first circular knife station 10A, a second circular knife station 10B and a third circular knife station 10C. The slitting mechanism 200 can be selectively arranged on the first circular knife station 10A, the second circular knife station 10B and the third circular knife station 10C. Figure 1In the figure, the slitting mechanism 200 is arranged on the first circular knife station 10A. At this time, the first circular knife station 10A is a circular knife die-cutting slitting station. The film material is transported to the first circular knife station 10A from front to back. The first circular knife station 10A includes a mounting seat 100 and a slitting mechanism 200. A roller group 110 is arranged on the mounting seat 100. The front side of the roller group 110 is the feeding side, and the rear side of the roller group 110 is the discharging side. The slitting mechanism 200 is arranged on the mounting seat 100 and is located on the discharging side of the roller group 110. The slitting mechanism 200 includes a cutter 210 for stripping the film material.

[0033] Since the circular knife machine in the present application includes a circular knife die-cutting and slitting station, and the circular knife die-cutting and slitting station also includes a roller group 110 for die-cutting the film material and a slitting mechanism 200 for slitting the film material, during the use of the circular knife machine in the present application, the roller group 110 in the circular knife die-cutting and slitting station can perform die-cutting processing on the film material, and a slitting mechanism 200 is provided at the discharge side of the roller group 110 in the circular knife die-cutting and slitting station. When the film material passes through the circular knife die-cutting and slitting station, the slitting mechanism 200 in the circular knife die-cutting and slitting station can slitting the film material. From the above, it can be known that when the film material needs to be slitting in the present circular knife machine, there is no need to add an additional circular knife station 10 with an active knife roller for slitting, thereby reducing the number of circular knife stations 10, simplifying the overall structure of the circular knife machine, and reducing the manufacturing cost of the circular knife machine.

[0034] It should be understood that in other embodiments of the present invention, the slitting mechanism 200 may be selectively disposed on the feed side of the roller group 110 according to actual needs, in addition to being disposed on the discharge side of the roller group 110 in the above embodiments.

[0035] like Figure 2 and Figure 4 As shown, in some embodiments of the utility model, the slitting mechanism 200 also includes a knife seat 220, and the knife seat 220 includes a first clamping portion 221, a second clamping portion 222, a mounting portion 224 and a locking structure. The first clamping portion 221 and the second clamping portion 222 are arranged in parallel on the mounting portion 224, and a clamping area 225 is formed between the first clamping portion 221 and the second clamping portion 222. The cutter 210 is partially arranged in the clamping area 225. The locking structure connects the first clamping portion 221 and the second clamping portion 222, and is used to provide a locking force that enables the first clamping portion 221 and the second clamping portion 222 to cooperate to clamp the cutter 210.

[0036] It can be understood that under the locking force of the locking structure, the first clamping portion 221 and the second clamping portion 222 arranged in parallel are brought close to each other, and the adjacent end surfaces of the first clamping portion 221 and the second clamping portion 222 respectively abut against the cutter 210, thereby stably locking the cutter 210 in the clamping area 225.

[0037] In one embodiment of the present invention, the locking structure includes a locking screw, which passes through the first clamping portion 221 and is threadedly connected to the second clamping portion 222. Figure 3 and Figure 4 As shown, the knife holder 220 is provided with a first through hole 223 passing through the first clamping portion 221 and the second clamping portion 222. The first through hole 223 is provided with two sections, wherein the section passing through the second clamping portion 222 is provided with a thread, and the locking screw passes through the first through hole 223 and is threadedly connected to the second clamping portion 222.

[0038] It is understandable that when the cutter 210 needs to be replaced, the staff can loosen the locking screw to increase the distance between the first clamping portion 221 and the second clamping portion 222. At this time, the staff can replace the cutter 210 in the clamping area 225. When the cutter 210 is replaced, the staff can tighten the locking screw so that the first clamping portion 221 and the second clamping portion 222 can cooperate to clamp the replaced cutter 210 in the clamping area 225.

[0039] It is understandable that, in addition to the locking screw in the above embodiment, in some other embodiments of the present invention, a locking bolt or other structure may be used to lock the cutter 210 in the clamping area 225 .

[0040] refer to Figure 4 In some embodiments of the present invention, the knife seat 220 further includes a first deformable portion 226, and one end of the first clamping portion 221 close to the mounting portion 224 is connected to the mounting portion 224 through the first deformable portion 226. The first clamping portion 221, the first deformable portion 226 and the mounting portion 224 jointly define a first avoidance groove 227, and the first avoidance groove 227 is connected to the clamping area 225. It can be understood that since the first clamping portion 221, the first deformable portion 226 and the mounting portion 224 form the first avoidance groove 227, the thickness of the first deformable portion 226 is smaller than the thickness of the first clamping portion 221, and the first deformable portion 226 is more likely to be deformed under the action of external force.

[0041] It can be understood that when the first clamping portion 221 approaches the second clamping portion 222 under the action of external force, since the first clamping portion 221 is connected to the mounting portion 224 through the first deformation portion 226, the first clamping portion 221 will swing around the mounting portion 224, so that the first clamping portion 221 will also approach the mounting portion 224 during the process of approaching the second clamping portion 222; the setting of the first avoidance groove 227 enables a part of the first clamping portion 221 to be accommodated in the first avoidance groove 227 when the first clamping portion 221 approaches the mounting portion 224, so as to reduce the possibility of the mounting portion 224 interfering with the first clamping portion 221 during the movement of the first clamping portion 221.

[0042] In one embodiment, if Figure 4 As shown, the knife seat 220 also includes a second deformable portion 228, and one end of the second clamping portion 222 close to the mounting portion 224 is connected to the mounting portion 224 through the second deformable portion 228. The second clamping portion 222, the second deformable portion 228 and the mounting portion 224 jointly define a second avoidance slot 229, and the second avoidance slot 229 is connected to the clamping area 225. It can be understood that since the second clamping portion 222, the second deformable portion 228 and the mounting portion 224 form the second avoidance slot 229, the thickness of the second deformable portion 228 is smaller than the thickness of the second clamping portion 222, and the second deformable portion 228 is more likely to be deformed under the action of an external force.

[0043] It can be understood that when the second clamping portion 222 approaches the first clamping portion 221 under the action of external force, since the second clamping portion 222 is connected to the mounting portion 224 through the second deformation portion 228, the second clamping portion 222 will swing around the mounting portion 224, so that the second clamping portion 222 will also approach the mounting portion 224 during the process of approaching the first clamping portion 221; the setting of the second avoidance groove 229 enables part of the second clamping portion 222 to be accommodated in the second avoidance groove 229 when the second clamping portion 222 approaches the mounting portion 224, so as to reduce the possibility of the mounting portion 224 interfering with the second clamping portion 222 during the movement of the second clamping portion 222.

[0044] In some embodiments of the present invention, the stripping mechanism 200 further includes a mounting frame 230, the mounting frame 230 includes a mounting shaft 231, a mounting through hole 224a is formed on the mounting portion 224, the mounting shaft 231 passes through the mounting through hole 224a, a slit 224b is formed on the hole wall of the mounting through hole 224a, and the knife holder 220 is connected at both ends of the slit 224b in the width direction by an adjusting member, and the adjusting member is used to adjust the width of the slit 224b. For example, Figure 3 and Figure 4As shown, a mounting through hole 224a is formed on the mounting portion 224, and the extension direction of the mounting through hole 224a is consistent with the extension direction of the first insertion hole 223. The mounting frame 230 includes a mounting shaft 231, and the mounting shaft 231 passes through the mounting through hole 224a. A gap 224b is formed on the hole wall of the mounting through hole 224a. A second insertion hole 224c is provided on the mounting portion 224, and the extension direction of the second insertion hole 224c is consistent with the width direction of the gap 224b. The second insertion hole 224c passes through the mounting portion 224 and is connected to the gap 224b. The adjustment member passes through the second insertion hole 224c and connects the knife seat 220 at both ends in the width direction of the gap 224b.

[0045] It should be noted that in the actual conveying process of the film material, there may be many different angles between the conveying path of the film material and the horizontal plane. When the angle between the conveying path of the film material and the horizontal plane changes, there will be a gap between the cutter 210 and the film material. At this time, the cutter 210 cannot normally divide the film material into strips.

[0046] Based on the above problems, it can be understood that in the circular knife machine of this embodiment, when there is a gap between the cutter 210 and the film material, the staff can adjust the width of the gap 224b through the adjusting piece to increase the size of the mounting hole 224a. At this time, the staff can drive the knife seat 220 to rotate relative to the mounting shaft 231 to adjust the position of the cutter 210 until the cutter 210 contacts the film material. At this time, the cutter 210 can normally strip the film material. After that, the staff can adjust the width of the gap 224b through the adjusting piece to reduce the size of the mounting hole 224a. The mounting hole 224a fits tightly with the mounting shaft 231 to provide friction to limit the rotation of the knife seat 220 on the mounting shaft 231, thereby achieving the locking and fixation of the knife seat 220.

[0047] It is understandable that in some specific embodiments of the present invention, the adjusting member may be a threaded fastener such as a bolt or a screw to adjust the width of the gap 224b.

[0048] refer to Figure 2 and Figure 3 In some embodiments, the mounting frame 230 further includes a fixing block 232 and a rotating rod 233, one end of the rotating rod 233 is connected to the mounting shaft 231, and the other end of the rotating rod 233 is rotatably connected to the fixing block 232, and the fixing block 232 is connected to the mounting seat 100. It can be understood that when the striping position of the cutter 210 needs to be adjusted, the rotating rod 233 is manually pushed to rotate relative to the mounting seat 100 around the fixing block 232, and the knife seat 220 connected to the mounting shaft 231 rotates accordingly, thereby achieving the adjustment of the position of the cutter 210 relative to the mounting seat 100.

[0049] In some embodiments of the present invention, the mounting base 100 includes a base 120, a first mounting plate 130 and a second mounting plate 140, the first mounting plate 130 and the second mounting plate 140 are respectively arranged on opposite sides of the base 120, the roller group 110 includes a plurality of round rollers 111, the opposite ends of the round rollers 111 are rotatably connected to the first mounting plate 130 and the second mounting plate 140, the first mounting plate 130 is provided with a first mounting groove 131, and the fixing block 232 is arranged in the first mounting groove 131. For example, Figure 2 As shown, the mounting seat 100 includes a base 120, a first mounting plate 130 and a second mounting plate 140, the first mounting plate 130 and the second mounting plate 140 are respectively arranged on the left and right sides of the base 120, the roller group 110 includes two round rollers 111, the left and right ends of the round rollers 111 are rotatably connected to the first mounting plate 130 and the second mounting plate 140 respectively, a first mounting groove 131 is arranged on the rear side of the first mounting plate 130, one end of the rotating rod 233 is connected to the left end of the mounting shaft 231, and the other end of the rotating rod 233 is connected to the fixing block 232, the fixing block 232 is arranged in the first mounting groove 131, and is connected to the first mounting plate 130 by threaded fasteners, so that the knife seat 220 located on the mounting frame 230 is fixed on the mounting seat 100, and is located on the discharge side of the roller group 110.

[0050] In some embodiments, the first mounting plate 130 is provided with a plurality of first mounting grooves 131 along the height direction. Figure 2 As shown, a plurality of first mounting grooves 131 are respectively arranged on the front and rear sides of the first mounting plate 130 along the height direction, and the plurality of first mounting grooves 131 are evenly spaced apart. The fixing block 232 can be selectively arranged in any first mounting groove 131 according to actual needs. Then, the staff can selectively set the fixing block 232 in the first mounting grooves 131 at different heights, thereby realizing the position adjustment of the mounting frame 230 in the vertical direction to adapt to the stripping of film materials at different heights.

[0051] refer to Figure 2 , Figure 3 and Figure 5 In some embodiments of the present invention, the fixing block 232 includes a hinge portion 232a and a connecting portion 232b, the hinge portion 232a is connected to the rotating rod 233, the connecting portion 232b is disposed in the first mounting groove 131, and the peripheral surface profile of the connecting portion 232b is adapted to the groove wall profile of the first mounting groove 131. Specifically, the first mounting groove 131 is an arc groove, the peripheral surface of the connecting portion 232b includes an arc surface adapted to the arc groove, and the arc surface of the connecting portion 232b is in contact with the groove wall surface of the first mounting groove 131.

[0052] In some embodiments of the utility model, two groups of rotating rods 233 and fixed blocks 232 are correspondingly arranged, the left end of the mounting shaft 231 is connected to the first mounting plate 130 through one group of rotating rods 233 and fixed blocks 232, and the right end of the mounting shaft 231 is connected to the second mounting plate 140 through another group of rotating rods 233 and fixed blocks 232, wherein the specific structure of the second mounting plate 140 refers to the first mounting plate 130.

[0053] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A circular knife machine, comprising a plurality of circular knife stations, characterized in that: The circular knife station includes a circular knife die cutting and striping station, and the circular knife die cutting and striping station includes: A mounting seat, wherein a roller group is arranged on the mounting seat, and the roller group is used for die-cutting the film material; The slitting mechanism is arranged on the mounting seat and is located at the feeding side and / or the discharging side of the roller group. The slitting mechanism includes a cutting knife for slitting the film material.

2. A circular knife machine according to claim 1, characterized in that: The slitting mechanism also includes a knife holder, which includes a first clamping portion, a second clamping portion, a mounting portion and a locking structure. The first clamping portion and the second clamping portion are arranged in parallel on the mounting portion, a clamping area is formed between the first clamping portion and the second clamping portion, and the cutter part is arranged in the clamping area. The locking structure connects the first clamping portion and the second clamping portion, and is used to provide a locking force that enables the first clamping portion and the second clamping portion to cooperate and clamp the cutter.

3. A circular knife machine according to claim 2, characterized in that: The locking structure includes a locking screw, which passes through the first clamping portion and is threadedly connected to the second clamping portion.

4. A circular knife machine according to claim 2, characterized in that: The tool holder also includes a first deformation portion, and one end of the first clamping portion close to the mounting portion is connected to the mounting portion through the first deformation portion. The first clamping portion, the first deformation portion and the mounting portion jointly define a first avoidance groove, and the first avoidance groove connects the clamping area.

5. A circular knife machine according to claim 4, characterized in that: The tool holder also includes a second deformation portion, and one end of the second clamping portion close to the mounting portion is connected to the mounting portion through the second deformation portion. The second clamping portion, the second deformation portion and the mounting portion jointly define a second avoidance groove, and the second avoidance groove is connected to the clamping area.

6. A circular knife machine according to claim 2, characterized in that: The slitting mechanism also includes a mounting frame, the mounting frame includes a mounting shaft, a mounting through hole is formed on the mounting portion, the mounting shaft passes through the mounting through hole, a gap is formed on the hole wall of the mounting through hole, and the knife seat is connected at both ends of the gap width direction by an adjusting piece, and the adjusting piece is used to adjust the width of the gap.

7. A circular knife machine according to claim 6, characterized in that: The mounting frame further comprises a fixing block and a rotating rod, one end of the rotating rod is connected to the mounting shaft, the other end of the rotating rod is rotatably connected to the fixing block, and the fixing block is connected to the mounting seat.

8. A circular knife machine according to claim 7, characterized in that: The mounting seat includes a base, a first mounting plate and a second mounting plate, the first mounting plate and the second mounting plate are respectively arranged on opposite sides of the base, the roller group includes a plurality of round rollers, the opposite ends of the round rollers are respectively rotatably connected to the first mounting plate and the second mounting plate, the first mounting plate is provided with a first mounting groove, and the fixing block is arranged in the first mounting groove.

9. A circular knife machine according to claim 8, characterized in that: The first mounting plate is provided with a plurality of first mounting grooves along the height direction.

10. A circular knife machine according to claim 8, characterized in that: The fixing block includes a hinged portion and a connecting portion, the hinged portion is connected to the rotating rod, the connecting portion is arranged in the first mounting groove, and the peripheral contour of the connecting portion is adapted to the groove wall contour of the first mounting groove.

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