Movable rotary cutter

Abstract

The utility model discloses a movable cutter rotating device which comprises a cutter rotating main body and a cutter rotating auxiliary body, a connecting ring plate is arranged on the cutter rotating main body, a local limiting plate is arranged on the connecting ring plate, a connecting inner ring matched with the connecting ring plate is arranged on the cutter rotating auxiliary body, and a local fixing plate is arranged on the connecting inner ring. A fixing unit detachably connected with the cutter rotating pair is arranged on the cutter rotating main body, and when the cutter rotating pair is connected with the fixing unit, the local fixing plate is aligned with the local limiting plate. According to the device, the movable cutter rotators are divided into the main cutter rotators and the auxiliary cutter rotators, the mode of bolt connection is replaced by rotary connection between the main cutter rotators and the auxiliary cutter rotators, and specifically, a local limiting plate corresponds to a local fixing plate through rotation of a connecting inner ring on a connecting ring plate; and therefore, the local limiting plate forms limiting constraint on the local fixing plate, and axial limiting constraint is formed on the tool rotating pair.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting tools, in particular to a movable cutter headstock. Background Art

[0002] Generally, for a movable cutter headstock, after assembling the cutting tool and the disc spring, it is directly sleeved on the shaft of the equipment, and then fixed on the shaft by a locking screw. Currently, the commonly used movable cutter headstocks in the market are all assembled and fixed with the cutting tool by locking the main cutter headstock and the auxiliary cutter headstock with 4-6 screws. The using method is to place the cutting tool, disc spring, etc. on the main cutter headstock in sequence, and then lock the auxiliary cutter headstock and the main cutter headstock with screws to assemble the cutter headstock.

[0003] For example, the publication number "CN116787532A" discloses "a cutting tool installation structure and its installation method", which includes a tool rest. The tool rest includes a tool rest seat for installing the cutting tool and a tool rest pressing plate for realizing axial pressing and locking of the cutting tool. A seat locking structure is arranged on the tool rest seat. The seat locking structure includes a spring-type compression locking structure and a locking deformation structure arranged in a linkage manner; a spring-type synchronous locking structure is arranged on the tool rest pressing plate. However, in actual application, each disassembly of this method requires unscrewing each screw one by one before the used cutting tool can be disassembled. During assembly, each screw also needs to be tightened one by one before it can be used. The relative time is longer. Summary of the Invention

[0004] Aiming at the problem of cumbersome disassembly and assembly of the existing technology mentioned in the background art, the utility model provides a movable cutter headstock, which can improve the efficiency during disassembly and assembly, avoid the steps of disassembling and assembling screws multiple times, and at the same time ensure the stability of the connection.

[0005] To achieve the above object, the utility model adopts the following technical solutions.

[0006] A movable cutter head includes a main cutter head and a sub-cutter head. A connecting ring plate is provided on the main cutter head, and a partial limiting plate is provided on the connecting ring plate. A connecting inner ring that cooperates with the connecting ring plate is provided on the sub-cutter head, and a partial fixing plate is provided on the connecting inner ring. A fixing unit for detachably connecting the sub-cutter head is provided on the main cutter head. When the sub-cutter head is connected to the fixing unit, the partial fixing plate is aligned with the partial limiting plate. In this application, the movable cutter head is divided into a main cutter head and a sub-cutter head. The rotational connection between the main cutter head and the sub-cutter head is used to replace the bolt connection method. Specifically, the rotation of the connecting inner ring on the connecting ring plate makes the partial limiting plate and the partial fixing plate correspond, so that the partial limiting plate forms a limiting constraint on the partial fixing plate, thereby forming an axial limiting constraint on the sub-cutter head. Further, a fixing unit is provided on the main cutter head. After the sub-cutter head rotates in place, that is, after the partial fixing plate on the sub-cutter head is aligned with the partial limiting plate on the main cutter head, the fixing unit can form a fixed limiting effect on the sub-cutter head. Specifically, the fixing unit includes, but is not limited to, detachable connecting pins, elastically arranged snap protrusions and other components to achieve the circumferential limiting effect of the sub-cutter head.

[0007] Preferably, the fixing unit is a fixing block movably connected to the main cutter head, and a fixing slot is provided on the sub-cutter head. When the sub-cutter head rotates in place on the connecting ring plate, the fixing slot is snap-connected to the fixing block. The fixing unit is a fixing block, and the fixing block can be snap-connected to the fixing slot to achieve the fixing effect on the sub-cutter head. Further, the connection method between the fixing block and the main cutter head is a movable connection, including but not limited to insertion connection, bolt connection, elastic connection, etc., to achieve the selectable limiting constraint of the fixing block on the sub-cutter head and facilitate disassembly.

[0008] Preferably, an elastic unit is provided between the fixing block and the main cutter head, and the fixing block can telescopically displace relative to the main cutter head. The elastic unit provided between the fixing block and the main cutter head can apply an elastic force to the fixing block. Therefore, the fixing block can compress the spring when pressed by an external force, so that the fixing block can achieve automatic telescopic snap connection.

[0009] Preferably, when the main cutter head is connected to the sub-cutter head, the connecting inner ring presses the fixing block. When the sub-cutter head is rotated until the fixing slot is aligned with the fixing block, the fixing block is snap-connected to the fixing slot. When the fixing block contracts into the main cutter head and then remains in the contracted state during the rotation of the sub-cutter head, and when the fixing slot is aligned with the fixing block, the fixing block can be snap-connected to the fixing slot under the elastic restoring force of the elastic unit, so as to ensure automatic snap connection. During disassembly, only need to press the fixing block into the main cutter head to release the limiting constraint, so that the sub-cutter head can rotate relative to the main cutter head.

[0010] Preferably, the connecting ring plate includes a relief area disposed on a side close to the fixing unit. The provision of the relief area on the connecting ring plate enables direct operation on the fixing unit in the relief area to release the limit constraint when disassembling the cutter rotation pair, and similarly enables operation on the fixing unit in the relief area to achieve limit constraint during the installation process.

[0011] Preferably, the fixing block includes a fixing portion connected to the fixing card slot, and the fixing block includes a disassembly portion exposed outside the fixing card slot. The fixing block includes a fixing portion and a disassembly portion, wherein the fixing portion is snap-connected to the fixing card slot, and the disassembly portion is exposed outside the fixing card slot, so that the fixing card slot does not have a constraint effect on the disassembly portion, and thus enables the operator to directly press the fixing block during the disassembly process, avoiding interference from the fixing card slot.

[0012] Preferably, the connecting ring plate includes a docking empty area, and the connecting inner ring includes an avoidance portion. When the local fixing plate is aligned with the docking empty area and the local limiting plate is aligned with the avoidance portion, the connecting ring plate is docked with the connecting inner ring. The docking empty area and the avoidance portion are formed naturally by the arrangement of the local limiting plate and the local fixing plate. Since the local limiting plate and the local fixing plate are locally arranged in a certain area on the cutter rotation main body and the cutter rotation pair, the docking empty area and the avoidance portion are formed at the positions where the local limiting plate and the local fixing plate are not arranged.

[0013] Preferably, a plurality of local limiting plates and local fixing plates are provided, and a docking empty area is provided between the local limiting plates, and an avoidance portion is provided between the local fixing plates. By providing a plurality of local limiting plates and local fixing plates, the constraint effect of the cutter rotation main body on the cutter rotation pair can be improved, and the connection tightness can be enhanced.

[0014] Preferably, the setting position of the fixing unit is misaligned with the setting position of the local limiting plate. By misaligning the setting position of the fixing unit with the local limiting plate, the interference effect of other components on the fixing unit can be reduced when installing or disassembling the fixing unit.

[0015] Preferably, a step seat is provided on the cutter rotation main body, the step seat includes a connecting surface, and the cutter rotation pair includes a clamping surface disposed on a side close to the cutter rotation main body. When the connecting inner ring abuts against the connecting surface, a clamping gap is left between the clamping surface and the cutter rotation main body.

[0016] The beneficial effects of the present utility model are as follows:

[0017] (1) It can improve the efficiency during the disassembly and assembly process, avoid the steps of disassembling and assembling screws multiple times, and at the same time ensure the connection stability;

[0018] (2) It can ensure the stability of the connection, ensure the stability of the connection in all directions, and can achieve an automatic snap-in connection effect through the elastically connected fixing unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is the first exploded view of the present invention.

[0020] Figure 2 yes Figure 1 Axonometric view of the middle knife rotation pair.

[0021] Figure 3 yes Figure 1 Axonometric view of the central knife spinner.

[0022] Figure 4 yes Figure 1 A partial enlarged view of the fixed unit.

[0023] Figure 5 This is the second exploded view of the present invention.

[0024] Figure 6 It is a front view of the utility model.

[0025] Figure 7 This is the third exploded view of the present invention.

[0026] In the figure:

[0027] 1 knife rotary main, 11 step seat, 111 connection surface;

[0028] 2 knife rotating pair, 21 fixed slot, 22 clamping surface;

[0029] 3 connecting ring plate, 31 local limiting plate, 32 giving way area, 33 docking empty area;

[0030] 4 is connected to the inner ring, 41 is a local fixed plate, and 42 is an avoidance portion;

[0031] 5 fixing unit, 51 fixing block, 511 fixing part, 512 disassembling part;

[0032] 6. Clamping gap;

[0033] 7 coil spring;

[0034] 8 knives. DETAILED DESCRIPTION

[0035] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0036] Embodiment 1:

[0037] like Figure 1 , 2, as shown in FIGS. 3, a movable cutter head includes a main cutter head 1 and a sub-cutter head 2. A connecting ring plate 3 is provided on the main cutter head 1, and a partial limiting plate 31 is provided on the connecting ring plate 3. A linking inner ring 4 that cooperates with the connecting ring plate 3 is provided on the sub-cutter head 2, and a partial fixing plate 41 is provided on the linking inner ring 4. A fixing unit 5 detachably connected to the sub-cutter head 2 is provided on the main cutter head 1. When the sub-cutter head 2 is connected to the fixing unit 5, the partial fixing plate 41 is aligned with the partial limiting plate 31. In this application, the movable cutter head is divided into the main cutter head 1 and the sub-cutter head 2. The rotational connection between the main cutter head 1 and the sub-cutter head 2 is used to replace the bolt connection method. Specifically, the rotation of the linking inner ring 4 on the connecting ring plate 3 makes the partial limiting plate 31 and the partial fixing plate 41 correspond, so that the partial limiting plate 31 forms a limiting constraint on the partial fixing plate 41, thereby forming an axial limiting constraint on the sub-cutter head 2. Further, a fixing unit 5 is provided on the main cutter head 1. After the sub-cutter head 2 rotates in place, that is, after the partial fixing plate 41 on the sub-cutter head 2 is aligned with the partial limiting plate 31 on the main cutter head 1, the fixing unit 5 can form a fixed limiting effect on the sub-cutter head 2. Specifically, the fixing unit 5 includes, but is not limited to, detachable connection components such as pins and elastically arranged snap protrusions to achieve the circumferential limiting effect of the sub-cutter head 2.

[0038] As Figure 1 , 4 shown, the fixing unit 5 is a fixing block 51 movably connected to the main cutter head 1. A fixing slot 21 is provided on the sub-cutter head 2. After the sub-cutter head 2 rotates in place on the connecting ring plate 3, the fixing slot 21 is engaged with the fixing block 51. An elastic unit is provided between the fixing block 51 and the main cutter head 1, and the fixing block 51 can telescopically displace relative to the main cutter head 1. The fixing unit 5 is the fixing block 51, and the fixing block 51 can be engaged with the fixing slot 21 to achieve the fixing effect on the sub-cutter head 2. Further, the connection method between the fixing block 51 and the main cutter head 1 is a movable connection, including but not limited to insertion connection, bolt connection, elastic connection, etc., to achieve the selectable limiting constraint of the fixing block 51 on the sub-cutter head 2 for convenient disassembly. The elastic unit provided between the fixing block 51 and the main cutter head 1 can apply an elastic force to the fixing block 51. Therefore, the fixing block 51 can compress the spring when pressed by an external force, so that the fixing block 51 can achieve automatic telescopic engagement.

[0039] As Figure 1 , 4As shown in FIGS. 5, when the main cutter rotation 1 is connected to the cutter rotation pair 2, the connecting inner ring 4 presses against the fixing block 51. When the cutter rotation pair 2 is rotated until the fixing slot 21 is aligned with the fixing block 51, the fixing block 51 is snap-connected to the fixing slot 21. When the fixing block 51 retracts into the main cutter rotation 1 and then remains in the retracted state during the rotation of the cutter rotation pair 2, and when the fixing slot 21 is aligned with the fixing block 51, the fixing block 51 can be snap-connected to the fixing slot 21 under the elastic restoring force of the elastic unit, so as to ensure automatic snap connection. During disassembly, only by pressing the fixing block 51 into the main cutter rotation 1 can the limit constraint be released, so that the cutter rotation pair 2 can rotate relative to the main cutter rotation 1.

[0040] As Figure 1 shown, the connecting ring plate 3 includes a relief area 32 provided on one side close to the fixing unit 5. The connecting ring plate 3 is provided with a relief area 32, so that when disassembling the cutter rotation pair 2, the fixing unit 5 can be directly operated on the relief area 32 to release the limit constraint, and similarly, the fixing unit 5 can be operated on the relief area 32 to achieve the limit constraint during installation.

[0041] As Figure 3 shown, the fixing block 51 includes a fixing portion 511 connected to the fixing slot 21, and the fixing block 51 includes a disassembly portion 512 exposed outside the fixing slot 21. The fixing block 51 includes a fixing portion 511 and a disassembly portion 512, wherein the fixing portion 511 is snap-connected to the fixing slot 21, and the disassembly portion 512 is exposed outside the fixing slot 21, so that the fixing slot 21 will not have a constraint effect on the disassembly portion 512, and thus during disassembly, the operator can directly press the fixing block 51, avoiding interference from the fixing slot 21.

[0042] As Figure 2 、 3 shown, the connecting ring plate 3 includes a docking empty area 33, and the connecting inner ring 4 includes an avoidance portion 42. When the partial fixing plate is aligned with the docking empty area 33 and the partial limiting plate is aligned with the avoidance portion 42, the connecting ring plate 3 is docked with the connecting inner ring 4. The docking empty area 33 and the avoidance portion 42 are naturally formed parts for arranging the partial limiting plate 31 and the partial fixing plate 41. Since the partial limiting plate 31 and the partial fixing plate 41 are partially arranged in a certain area on the main cutter rotation 1 and the cutter rotation pair 2, the docking empty area 33 and the avoidance portion 42 are formed at the positions where the partial limiting plate 31 and the partial fixing plate 41 are not provided.

[0043] As Figure 1As shown, a plurality of local limit plates 31 and local fixing plates 41 are provided. There is a docking gap 33 between each of the local limit plates 31, and an avoidance portion is provided between each of the local fixing plates 41. By providing a plurality of local limit plates 31 and local fixing plates 41, the constraint effect of the tool rotation main body 1 on the tool rotation auxiliary body 2 can be improved, and the tightness of the connection can be enhanced.

[0044] As Figure 1 , 4 shown, the setting position of the fixing unit 5 is offset from the setting position of the local limit plate 31. By offsetting the setting position of the fixing unit 5 from the local limit plate 31, when installing or disassembling the fixing unit 5, the interference effect of other components on the fixing unit 5 can be reduced.

[0045] As Figure 5 , 6 shown, a stepped seat 11 is provided on the tool rotation main body 1. The stepped seat 11 includes a connection surface 111. The tool rotation auxiliary body 2 includes a clamping surface 22 provided on the side close to the tool rotation main body 1. When the connecting inner ring 4 abuts against the connection surface 111, a clamping gap 6 is left between the clamping surface 22 and the tool rotation main body 1.

[0046] As Figure 7 shown, the assembly and working process of the movable tool rotation in this embodiment are as follows: In this embodiment, the movable tool rotation includes a tool rotation main body 1 and a tool rotation auxiliary body 2, wherein the tool rotation main body 1 and the tool rotation auxiliary body 2 are combined and connected, and the tool 8 and the disc spring 7 are clamped in the middle position, thereby fixing the tool 8 and ensuring the stability of the tool 8 during the cutting process. Therefore, in this embodiment, the connection method between the tool rotation main body 1 and the tool rotation auxiliary body 2 is improved, making the connection between the tool rotation main body 1 and the tool rotation auxiliary body 2 more convenient and rapid. In this embodiment, the connection between the tool rotation main body 1 and the tool rotation auxiliary body 2 is changed to a rotational snap connection, thereby avoiding opening bolt holes on the tool rotation main body 1 and the tool rotation auxiliary body 2. By using the method of bolt connection, the connection steps are reduced, and the opening of the tool rotation main body 1 and the tool rotation auxiliary body 2 can be avoided, thereby increasing the structural strength of the tool rotation main body 1 and the tool rotation auxiliary body 2, and further ensuring the stability of the connection.

[0047] The specific connection method in this embodiment is as follows, wherein, in this embodiment, a connecting ring plate 3 is provided on the knife rotating main 1, wherein the connecting ring plate 3 is not a full circle structure, and a part is missing in the middle of the connecting ring plate 3, and a fixing unit 5 is provided on the surrounding area of ​​the missing part, thereby ensuring the convenient operation of the fixing unit 5; further, in this embodiment, a local limiting plate 31 is provided on the connecting ring plate 3, wherein the local limiting plates 31 are criss-crossed relative to the connecting ring plate 3, and in this embodiment, the connecting ring plate 3 extends axially, and the local limiting plates 31 are arranged at the end of the connecting ring plate 3, and the extension direction is lateral extension, wherein in this embodiment, four local limiting plates 31 are provided, which are staggered in the circumferential direction of the connecting ring plate 3, and between each local limiting plate 31 is a docking empty area 33, and correspondingly, four docking empty areas 33 are also provided; in this embodiment, four local fixing plates 41 and four avoidance parts 42 are correspondingly provided on the link inner ring 4 of the knife rotating pair 2, wherein the local fixing plates 41 and the avoidance parts 42 are also staggered.

[0048] Based on the above technical scheme, the connection and assembly process in this embodiment is as follows. In this embodiment, the avoidance portion 42 and the local limit plate 31 are first matched, and correspondingly, the give way area 32 and the local fixed plate 41 are matched, so that the knife rotation pair 2 can be connected correspondingly to the knife rotation main 1, and the link inner ring 4 can be connected correspondingly to the connecting ring plate 3, wherein the local fixed plate 41 on the link inner ring 4 abuts against the connecting ring plate 3. After the knife rotation pair 2 and the knife rotation main 1 are docked, the knife rotation pair 2 can be rotated to align the local fixed plate 41 with the local limit plate. Due to the mutual abutment between the local limit plate 31 and the local fixed plate 41, the local limit plate 31 can form a limiting effect on the local fixed plate 41, thereby fixing the knife rotation pair 2 on the connecting ring plate 3.

[0049] Furthermore, in this embodiment, when the rotary tool sub - assembly 2 and the rotary tool main body 1 are connected, since the fixing unit 5 is arranged near the docking empty area 33, during the process of installing the rotary tool sub - assembly 2 onto the rotary tool main body 1, it is necessary to align the local fixing plate 41 with the docking empty area 33. During the process of the rotary tool main body 1 and the rotary tool sub - assembly 2 approaching each other, the local fixing plate 41 will squeeze the fixing unit 5. In this embodiment, the fixing unit 5 is a fixing block 51, and the fixing block 51 is elastically arranged on the rotary tool main body 1. An elastic unit is arranged between the fixing block 51 and the rotary tool main body 1, and the elastic unit can drive the fixing block 51 to self - reset. Therefore, during the connection process of the rotary tool main body 1 and the rotary tool sub - assembly 2, the fixing block 51 is squeezed into the interior of the rotary tool main body 1. And during the rotation of the rotary tool sub - assembly 2, since the rotary tool sub - assembly 2 always covers all or part of the fixing block 51, the squeezing effect on the fixing block 51 can be always maintained. In this embodiment, a fixing slot 21 is arranged on the rotary tool sub - assembly 2, and the shape of the fixing slot 21 is adapted to the shape of the fixing block 51. Therefore, when the rotary tool sub - assembly 2 rotates to align the fixing slot 21 with the fixing block 51, the fixing block 51 is lifted by the elastic unit and engaged with the fixing slot 21. At this time, the fixing block 51 and the fixing slot 21 complete mutual limiting, and the rotary tool sub - assembly 2 cannot continue to rotate. At this time, the local fixing plate 41 and the local limiting plate 31 are kept in an aligned state. At this time, the axial movement of the rotary tool sub - assembly 2 is limited. Since the linking inner ring 4 and the connecting ring plate 3 are kept in a sleeved state, the radial movement of the rotary tool sub - assembly 2 is limited. Due to the engagement connection between the fixing block 51 and the fixing slot 21, the circumferential rotation of the rotary tool sub - assembly 2 is also limited, thus realizing the rapid installation process.

[0050] The disassembly process in this embodiment is as follows: Since the connection between the fixing slot 21 and the fixing block 51 is a partial engagement connection, that is, the fixing block 51 is divided into two parts, namely the fixing part 511 that engages with the fixing slot 21, and the part that does not engage with the fixing slot 21 is the disassembly part 512. There is no interference from the connected components around the disassembly part 512. Therefore, during the disassembly process, the staff can directly press the area of the disassembly part 512 to press the fixing block 51 down into the rotary tool main body 1, so that the fixing part 511 is disengaged from the fixing slot 21. Then rotate the rotary tool sub - assembly 2. Since there are multiple local fixing plates 41 arranged on the rotary tool sub - assembly 2, and each local fixing plate 41 is arranged in a staggered manner with the local limiting plate 31, the rotary tool sub - assembly 2 can be rotated in both forward and reverse directions to achieve rotation, so that the local fixing plate 41 and the local limiting plate 31 are staggered to remove the rotary tool sub - assembly 2 from the rotary tool main body 1. And during the rotation process, the rotary tool sub - assembly 2 will always maintain the squeezing effect on the fixing block 51 to avoid interference from the fixing block 51. When the rotary tool main body 1 and the rotary tool sub - assembly 2 are separated, the fixing block 51 pops out again under the drive of the elastic unit.

[0051] Further, in this embodiment, a stepped seat 11 is provided on the cutter rotation main body 1. During the installation process, first, the cutter 8 and the disc spring 7 need to be installed and sleeved on the stepped seat 11. At this time, a preliminary limit constraint is imposed on the positions of the cutter 8 and the disc spring 7 to ensure that the central positions of the cutter 8 and the disc spring 7 are aligned. A connecting surface 111 is provided on the stepped seat 11, and the connecting surface 111 is the surface connected to the cutter rotation pair 2. Components such as the connecting ring plate 3 and the fixing unit 5 are arranged on the connecting surface 111. In this embodiment, the connecting inner ring 4 is arranged on the cutter rotation pair 2, and a stepped structure is also formed between the connecting inner ring 4 and the cutter rotation pair 2. The connecting inner ring 4 abuts against the connecting surface 111. Since the size and thickness of the outer ring part of the cutter rotation pair 2 are greater than those of the connecting inner ring 4, a clamping gap 6 can be formed between the clamping surface 22 of the outer ring part of the cutter rotation pair 2 and the cutter rotation main body 1. The disc spring 7 and the cutter 8 are clamped through the clamping gap 6.

Claims

1. A mobile knife rotation, characterized in that, The invention comprises a main knife rotating body (1) and a knife rotating pair (2); the main knife rotating body (1) is provided with a connecting ring plate (3); the connecting ring plate (3) is provided with a local limiting plate (31); the knife rotating pair (2) is provided with a connecting inner ring (4) matched with the connecting ring plate (3); the connecting inner ring (4) is provided with a local fixing plate (41); the main knife rotating body (1) is provided with a fixing unit (5) detachably connected to the knife rotating pair (2); when the knife rotating pair (2) is connected to the fixing unit (5), the local fixing plate (41) is aligned with the local limiting plate (31).

2. A mobile knife rotary according to claim 1, characterized in that: The fixing unit (5) is a fixing block (51) movably connected to the main knife rotating member (1), and a fixing slot (21) is provided on the knife rotating member (2). When the knife rotating member (2) is rotated into position on the connecting ring plate (3), the fixing slot (21) is engaged and connected with the fixing block (51).

3. A mobile knife rotary according to claim 2, characterized in that: An elastic unit is provided between the fixed block (51) and the knife rotating main body (1), and the fixed block (51) can be telescopically displaced relative to the knife rotating main body (1).

4. A mobile knife rotary according to claim 3, characterized in that: When the main blade rotation member (1) is connected to the blade rotation member (2), the connecting inner ring (4) presses the fixed block (51); when the blade rotation member (2) is rotated until the fixed slot (21) is aligned with the fixed block (51), the fixed block (51) is engaged and connected to the fixed slot (21).

5. A mobile knife rotary according to claim 3, characterized in that: The connecting ring plate (3) comprises a clearance area (32) arranged close to one side of the fixing unit (5).

6. A mobile knife rotary according to claim 3, characterized in that: The fixing block (51) comprises a fixing portion (511) connected to the fixing slot (21), and the fixing block (51) comprises a disassembly portion (512) exposed outside the fixing slot (21).

7. A mobile knife rotary according to claim 1, characterized in that: The connecting ring plate (3) includes a butt joint empty area (33), and the connecting inner ring (4) includes an avoidance portion (42). When the local fixing plate (41) is aligned with the butt joint empty area (33), and when the local limiting plate (31) is aligned with the avoidance portion (42), the connecting ring plate (3) is butt jointed with the inner ring (4).

8. A mobile knife rotary according to claim 7, characterized in that: A plurality of the local limiting plates (31) and the local fixing plates (41) are provided, a docking space (33) is provided between each of the local limiting plates (31), and an avoidance portion (42) is provided between each of the local fixing plates (41).

9. A mobile knife rotary according to any one of claims 1 to 8, characterized in that: The setting position of the fixing unit (5) is misaligned with the setting position of the local limiting plate (31).

10. A mobile knife rotary according to any one of claims 1 to 8, characterized in that: The knife rotating main body (1) is provided with a step seat (11), the step seat (11) includes a connecting surface (111), the knife rotating pair (2) includes a clamping surface (22) arranged close to one side of the knife rotating main body (1), and when the connecting inner ring (4) abuts against the connecting surface (111), a clamping gap (6) is left between the clamping surface (22) and the knife rotating main body (1).

Images