CN110154118B - Rotary knife device capable of automatically compensating - Google Patents

Rotary knife device capable of automatically compensating Download PDF

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Publication number
CN110154118B
CN110154118B CN201910552432.6A CN201910552432A CN110154118B CN 110154118 B CN110154118 B CN 110154118B CN 201910552432 A CN201910552432 A CN 201910552432A CN 110154118 B CN110154118 B CN 110154118B
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CN
China
Prior art keywords
bearing
mounting seat
rotating shaft
blade
seat
Prior art date
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Application number
CN201910552432.6A
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Chinese (zh)
Other versions
CN110154118A (en
Inventor
李沛海
汪健
吴印
张明明
彭期伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chongqing Changzheng Heavy Industry Co Ltd
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Chongqing Changzheng Heavy Industry Co Ltd
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Priority to CN201910552432.6A priority Critical patent/CN110154118B/en
Publication of CN110154118A publication Critical patent/CN110154118A/en
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Publication of CN110154118B publication Critical patent/CN110154118B/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/25Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/08Means for actuating the cutting member to effect the cut
    • B26D5/12Fluid-pressure means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/26Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D7/2628Means for adjusting the position of the cutting member

Abstract

The invention relates to the field of cutting blades, in particular to a rotary knife device capable of automatically compensating. The device comprises a blade, a cutter head, a mounting seat and a bearing seat; the mounting seat is fixedly arranged with the cutterhead, and the bearing seat is connected with the rotating shaft through a bearing; the bearing pedestal and the mounting seat form a cavity, at least two thrust components are arranged in the cavity and used for pushing the bearing pedestal, the bearing pedestal drives the rotating shaft to move in a direction away from the mounting seat, and then the blade is pushed to automatically compensate the cutter disc, so that the problems of poor cutting quality, part damage and the like caused by the fact that the blade is cut and worn to generate a gap are solved.

Description

Rotary knife device capable of automatically compensating
Technical Field
The invention relates to the field of cutting blades, in particular to a rotary knife device capable of automatically compensating.
Background
The existing cutting equipment comprises a blade and a cutter disc, wherein the blade is a movable blade, the cutter disc is a fixed blade, the blade is tightly attached to the cutter disc, and when in cutting, materials are fed from the direction of the blade and discharged from a hollowed-out hole on the cutter disc; the blade rotates relative to the cutterhead, thereby forming a cut of material. During the cutting process, the knife edge contacted with the cutter head correspondingly generates abrasion, and after the movable blade is abraded, a gap is formed between the movable blade and the cutter head, so that the cutting effect and the service life of the blade are affected. In the prior art, after the abrasion of the cutting blade occurs, the abrasion needs to be adjusted and compensated manually. The wear compensation method is complex in operation and needs to be performed in a shutdown state to ensure safety; therefore, there are drawbacks in that the apparatus cannot be operated continuously and production efficiency is low, and improvement is required.
Disclosure of Invention
The invention aims at: aiming at the problem that the cutting blade in the prior art needs to be manually adjusted after being worn, the automatic compensation of the cutting blade after being worn is realized.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the rotary knife device capable of automatically compensating comprises a rotary shaft and a knife blade fixedly connected to one end of the rotary shaft, and is characterized by further comprising a knife disc and a mounting seat which are fixedly arranged; the cutter disc is positioned between the mounting seat and the blade; the front end of the rotating shaft passes through the cutter head, and the rotating shaft can move and is rotatably arranged on the mounting seat, and the mounting seat is close to the tail end of the rotating shaft; the tail end of the rotating shaft is connected with a bearing seat through a first bearing, and the bearing seat can drive the rotating shaft to move towards the direction far away from the mounting seat; a thrust component is arranged between the bearing seat and the mounting seat and pushes the bearing seat to be far away from the mounting seat so as to enable the blade to be clung to the cutterhead.
In the scheme of the invention, the cutterhead is arranged in front of the head of the mounting seat, and the cutterhead and the mounting seat are fixedly arranged. The blade is closely adjacent to the cutterhead. The head of the mounting seat is one end which is close to the blade along the rotating shaft, and the tail end of the mounting seat is the other end. The thrust component between the mounting seat and the bearing seat enables the blade to be tightly attached to the cutterhead.
In the blade cutting process, when a gap appears between the cutter disc and the blade, the thrust component pushes the bearing seat to move in a direction away from the cutter disc. The bearing seat is clamped on the rotating shaft, so that the rotating shaft is driven to move. The blade and the cutter head are kept in a close contact state at any time, and the gap generated after the blade is worn is automatically compensated. The thrust member may be a spring, or other member having a thrust force.
As a preferable scheme of the invention, the rotating shaft is connected with a sleeve in a sliding way, and the sleeve is fixedly connected with the mounting seat through a second bearing. The rotating shaft forms axial relative movement with the mounting seat through the shaft sleeve and forms relative rotation with the mounting seat through the second bearing, so that the rotating shaft is ensured to have a movement relation which can move axially and rotate relative to the mounting seat, and the rotating shaft has a simple structure and reliable function.
Wherein, two second bearings are arranged on the sleeve, and a shaft sleeve is arranged between the two second bearings; the sleeve is provided with a thrust ring which is used for limiting the position of the second bearing at the inner end. The axial positions of the two second bearings are limited by the thrust ring and the shaft sleeve, so that the two bearings form stable support for the rotating shaft.
As a preferable scheme of the invention, a dustproof transparent cover is arranged on the head of the mounting seat, and the dustproof transparent cover is fixedly connected with the cutterhead; the dust-proof transparent cover also forms an axial position limitation for the two second bearings.
The installation dustproof transparent cover can seal the installation seat, achieves dustproof effect and protects the bearing inside the installation seat.
The dustproof transparent cover prevents the two second bearings from channeling outwards and can prevent bearing grease inside the mounting seat from leaking and being polluted; thereby prolonging the service life.
As a preferable mode of the invention, wherein the mounting seat is formed with a cavity for mounting the thrust component, and the bearing seat is positioned in the cavity; a convex-concave matching structure is formed between the inner wall of the cavity of the mounting seat and the bearing seat, and the convex-concave matching structure is used for preventing the bearing seat from rotating; the bearing seat is in a cylindrical structure, and a cylinder opening of the bearing seat is provided with an outwardly extending flange; the two ends of the thrust component are propped between the flange and the bottom of the cavity. The rolling friction characteristic of the first bearing is fully utilized, the bearing seat and the mounting seat are prevented from forming relative rotation, various selectable modes are provided for selecting the thrust component and connecting the thrust component and the mounting seat, and the thrust component is ensured to run reliably.
As a preferable mode of the present invention, wherein the thrust member is a hydraulic cylinder. The automatic compensation driving of constant thrust can be formed by setting the pressure of the hydraulic cylinder; the wear of the blade can also be estimated by the oil pressure of the hydraulic thrust.
As a preferable scheme of the invention, the knife handle is fixed by a fixing nut screwed on the rotating shaft; a nut sleeve is arranged between the fixing nut and the knife handle. The tool handle is fixed by fully utilizing the existing threaded fastener, so that the structure is simplified, and the cost is reduced.
As a preferable mode of the present invention, the first bearing is a thrust ball bearing; the second bearing is a deep groove ball bearing.
In summary, due to the adoption of the technical scheme, the beneficial effects of the invention are as follows:
1. when the blade is cut, after a gap is formed between the blade and the cutter head, the thrust bearing drives the rotating shaft to move, so that the blade and the cutter head are kept in a close contact state at all times, and the purpose of automatically compensating the gap of the blade is achieved.
2. The worker can judge the wearing condition of the blade by observing the oil pressure condition of the hydraulic cylinder. When the oil pressure of the hydraulic cylinder is lower than a first preset threshold value and is stable and unchanged, a worker can judge that the blade is worn and the bearing seat pushes the rotating shaft to compensate. When the oil pressure of the hydraulic cylinder is lower than a second preset threshold value, the blade is replaced by a worker, so that the problem that the cutting quality is not affected in time due to replacement of the blade, and a cutterhead or other parts are damaged is avoided.
3. The device provided by the scheme is simple in adjustment mode, does not occupy working time, and improves the working efficiency of cutting; meanwhile, the utilization rate of the blade is improved, and the running cost is reduced.
Description of the drawings:
FIG. 1 is a schematic structural diagram of embodiment 1 of the present invention;
FIG. 2 is a schematic structural diagram of embodiment 2 of the present invention;
fig. 3 is a left side view of embodiment 2 of the present invention.
The marks in the figure: the cutter comprises a cutter handle 1, a cutter blade 2, a cutter disc 3, a mounting seat 4 and a thrust component 5; the device comprises a bearing seat 6, a coupler 7, a rotary shaft 8, a thrust ball bearing 9, a shaft sleeve 10, a thrust ring 11, a sleeve 12, a deep groove ball bearing 13, a dustproof cover 14, a nut sleeve 15 and a fixing nut 16.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1
The embodiment provides a rotary cutter device capable of automatically compensating, which comprises a cutter handle 1, a cutter blade 2, a cutter head 3, a mounting seat 4, a thrust component 5, a bearing seat 6, a coupler 7, a rotating shaft 8, a thrust ball bearing 9, a sleeve 12 and a deep groove ball bearing 13.
As shown in the structural schematic diagram of embodiment 1 of the present invention in fig. 1, a cutter handle 1 is provided at one end of a rotation shaft 8, the cutter handle 1 can be fixed at the front end of the rotation shaft 8 by screw connection, a plurality of blades 2 are provided on the cutter handle 1, the other end of the rotation shaft 8 is a coupling 7, the coupling 7 provides rotation power, so that the blades 2 rotate.
The cutterhead 3 and the mounting seat 4 are fixed on the machine tool, and the cutterhead 3 is closely adjacent to the blade 2.
The middle part of the rotating shaft 8 is provided with a sleeve 12, two ends of the sleeve 12 are provided with deep groove ball bearings 13, the rotating shaft 8 is arranged on the mounting seat 4 through the sleeve 12 and the deep groove ball bearings 13, the tail end of the rotating shaft 8 is provided with a bulge, the bearing seat 6 is connected to the tail end of the rotating shaft 8 through a thrust ball bearing 9, and the thrust ball bearing 9 is positioned on the inner side of the bulge.
The mounting seat 4 and the bearing seat 6 form a cavity, and a thrust part 5 is arranged in the cavity, wherein the thrust part 5 is used for pushing the bearing seat 6 to move towards the coupler 7 by taking the mounting seat 4 as an acting point. Therefore, the thrust member 5 should be a commercially available power member having a constant thrust; it should be understood that the same or similar technical solutions are also included in the protection scope of the present invention by directly replacing the mechanisms or components that achieve the same or similar functions.
The thrust member 5 here employs a hydraulic cylinder as a thrust power source.
When the rotary cutter device capable of automatically compensating is used, feeding is conducted from the direction of the cutter handle 3, main cutting objects are sludge, straw and the like, and discharging is conducted through the hollowed-out holes in the cutter disc 3 after cutting.
When the blade 2 is worn, the bearing seat 6 can drive the rotating shaft 8 to move in a direction away from the mounting seat 4, so that the blade 2 and the cutter head 3 are kept in a close contact state at any time, and the function of automatically compensating the gap generated by the abrasion of the blade 2 is realized.
Example 2
Embodiment 2 provides a rotary cutter device capable of automatically compensating, which comprises a cutter handle 1, a cutter blade 2, a cutter head 3, a mounting seat 4, a thrust component 5, a bearing seat 6, a coupler 7, a rotating shaft 8, a thrust ball bearing 9, shaft sleeves, 10, a thrust ring 11, a sleeve 12, a deep groove ball bearing 13, a dustproof transparent cover 14, a nut sleeve 15 and a fixing nut 16.
As shown in the structural schematic diagram of embodiment 2 of the present invention in fig. 2, a handle 1 is provided at one end of a rotating shaft 8, the handle 1 can be fixed at the front end of the rotating shaft 8 by screw connection, a plurality of blades 2 are provided on the handle 1, the other end of the rotating shaft 8 is a coupling 7, and the coupling 7 provides rotating power to make the blades 2 rotate.
The cutterhead 3 and the mounting seat 4 are fixed on the machine tool, and the cutterhead 3 is closely adjacent to the blade 2.
The knife handle 1 is fixed by a fixed nut 16 screwed on the rotating shaft 8; a nut sleeve 15 is arranged between the fixed nut 16 and the knife handle 1. The blade 2 and the cutter head 3 are more fixed and firm, meanwhile, the structure is simplified, and the cost is reduced.
The middle part of the rotating shaft 8 is provided with a sleeve 12, two ends of the sleeve 12 are provided with deep groove ball bearings 13, and the rotating shaft 8 is arranged on the mounting seat 4 through the sleeve 12 and the deep groove ball bearings 13. A shaft sleeve 10 is arranged between the two deep groove ball bearings 13; a thrust ring 11 is provided on the end of the sleeve 12 remote from the cutterhead 3. The axial positions of the two deep groove ball bearings 13 are defined by the thrust ring 11 and the sleeve 10 so that the two deep groove ball bearings 13 stably support the rotating shaft.
The mounting seat 4 is provided with a cavity for mounting the thrust component 5, and the bearing seat 6 is positioned in the cavity; the tail end of the rotating shaft 8 is provided with a bulge, the bearing seat 6 is connected with the tail end of the rotating shaft 8 through a thrust ball bearing 9, and the thrust ball bearing 9 is positioned at the inner side of the bulge.
The mounting seat 4 and the bearing seat 6 form a cavity, and a thrust part 5 is arranged in the cavity, wherein the thrust part 5 is used for pushing the bearing seat 6 to move towards the coupler 7 by taking the mounting seat 4 as an acting point. Therefore, the thrust member 5 should be a commercially available power member having a constant thrust; it should be understood that the same or similar technical solutions are also included in the protection scope of the present invention by directly replacing the mechanisms or components that achieve the same or similar functions.
The thrust member 5 here employs a hydraulic cylinder as a thrust power source.
A dustproof transparent cover 14 is arranged on the head of the mounting seat 4, and the dustproof transparent cover 14 is fixedly connected with the cutterhead 3; the dust-proof transparent cover abuts against the two deep groove ball bearings 13. The dustproof transparent cover 14 prevents the outward channeling of the two deep groove ball bearings and can prevent bearing grease inside the mounting seat 4 from leaking and being polluted; thereby prolonging the service life.
As shown in fig. 3, which is a left side view of embodiment 2 of the present invention, the direction of fig. 3 is the feeding direction, the feeding direction is from the direction of the cutter handle 3, the main cutting object is sludge, straw, etc., and the cut material will be discharged through the hollowed-out hole on the cutter head 3.
When the blade 2 is cut, after a gap is formed between the blade 2 and the cutter head 3, the bearing seat 6 can drive the rotating shaft 8 to move in a direction away from the mounting seat 4, so that the blade 2 and the cutter head 3 are kept in a close contact state at any time, and the function of compensating the gap generated by abrasion of the blade 2 is realized.
Meanwhile, the worker can estimate the abrasion condition of the blade by observing the oil pressure change condition of the hydraulic cylinder, and further determine whether to replace the blade.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims (8)

1. A rotary knife device capable of automatic compensation, which comprises a rotary shaft (8) and a knife blade (2) fixedly connected with one end of the rotary shaft, and is characterized in that,
the device also comprises a cutter head (3) and a mounting seat (4) which are fixedly arranged; the cutterhead (3) is positioned between the mounting seat (4) and the blade (2); the front end of the rotating shaft (8) passes through the cutter head (3), the rotating shaft (8) is movable and rotatably arranged on the mounting seat (4), and the mounting seat (4) is close to the tail end of the rotating shaft (8); the tail end of the rotating shaft (8) is connected with a bearing seat (6) through a first bearing (9), and the bearing seat (6) can drive the rotating shaft (8) to move in the direction away from the mounting seat (4); a thrust component (5) is arranged between the bearing seat (6) and the mounting seat (4), and the thrust component (5) pushes the bearing seat (6) to be far away from the mounting seat (4) so as to enable the blade (2) to be tightly attached to the cutterhead (3); a sleeve (12) is connected to the rotating shaft (8) in a sliding manner, and the sleeve (12) is fixedly connected with the mounting seat (4) through a second bearing (13); the blade (2) is arranged on the rotating shaft (8) through the knife handle (1).
2. A rotary knife device capable of automatic compensation according to claim 1, characterized in that,
two second bearings (13) are arranged on the sleeve (12), and a shaft sleeve (10) is arranged between the two second bearings (13); the sleeve (12) is provided with a thrust ring (11), and the thrust ring (11) is used for limiting the position of the inner end second bearing (13).
3. An automatically compensating rotary knife device according to claim 2, wherein,
the mounting seat is provided with a dustproof transparent cover (14), and the dustproof transparent cover (14) is positioned at the outer ends of the two second bearings (13) and fixedly connected with the cutterhead (3).
4. A rotary knife device capable of automatic compensation according to claim 1, characterized in that the mounting seat (4) is formed with a cavity in which the thrust member (5) is mounted, and that the bearing seat (6) is located in the cavity; a convex-concave matching structure is formed between the inner wall of the cavity of the mounting seat (4) and the bearing seat (6), and the convex-concave matching structure is used for preventing the bearing seat (6) from rotating; the bearing seat (6) is of a cylindrical structure, and a cylinder opening of the bearing seat (6) is provided with an outwardly extending flange; and two ends of the thrust part (5) are propped between the flange and the cavity bottom of the cavity.
5. A rotary knife device capable of automatic compensation according to claim 1, characterized in that,
the thrust component (5) is a hydraulic cylinder.
6. A rotary knife device capable of automatic compensation according to claim 1, characterized in that,
the knife handle (1) is fixed through a fixing nut (16) screwed on the rotating shaft (8); a nut sleeve (15) is arranged between the fixed nut (16) and the knife handle (1).
7. An automatically compensating rotary knife device according to any of claims 1-6, characterized in that,
the first bearing (9) is a thrust ball bearing.
8. An automatically compensating rotary knife device according to any of claims 1-6, characterized in that,
the second bearing (13) is a deep groove ball bearing.
CN201910552432.6A 2019-06-25 2019-06-25 Rotary knife device capable of automatically compensating Active CN110154118B (en)

Priority Applications (1)

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CN201910552432.6A CN110154118B (en) 2019-06-25 2019-06-25 Rotary knife device capable of automatically compensating

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Application Number Priority Date Filing Date Title
CN201910552432.6A CN110154118B (en) 2019-06-25 2019-06-25 Rotary knife device capable of automatically compensating

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CN110154118A CN110154118A (en) 2019-08-23
CN110154118B true CN110154118B (en) 2024-02-23

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110405541A (en) * 2019-09-04 2019-11-05 重庆长征重工有限责任公司 A kind of cutting abrasion adjustment device

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