CN212823052U - Stepped multi-cutter shearing cutter - Google Patents
Stepped multi-cutter shearing cutter Download PDFInfo
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- CN212823052U CN212823052U CN202021142216.9U CN202021142216U CN212823052U CN 212823052 U CN212823052 U CN 212823052U CN 202021142216 U CN202021142216 U CN 202021142216U CN 212823052 U CN212823052 U CN 212823052U
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Abstract
The utility model relates to a lower shearing knife of a step type multi-knife shear, which comprises a lower knife holder and a lower knife blade; the lower tool apron is provided with a blade mounting area; a lower blade is fixed on the blade mounting area; the blade mounting area is provided with a plurality of blade fixing screw holes, and the blade fixing screw holes are vertically arranged in the lower cutter holder; a plurality of vertically arranged blade mounting counter bores are formed in the lower blade, and fastening screws penetrate through the blade mounting counter bores and are screwed into the blade fixing screw holes; the cap head of the fastening screw is sunk into the upper part of the blade mounting counter bore. The utility model discloses to the atress characteristics of shearing the sword under in the cascaded multitool is cut, carried out redesign to the structure of bottom knife and the fixed mode of installation, it is more stable, reliable in the messenger shear knife use. And can be conveniently disassembled and adjusted; the cutter is provided with a plurality of working blades, and can realize maintenance without accessories; meanwhile, the reliability and stability of the operation of the whole machine are improved.
Description
Technical Field
The utility model relates to a lower shear knife of multitool cutter especially relates to removable formula bottom knife and installation fixed mode thereof.
Background
In order to improve the shearing efficiency, the applicant applies for a plurality of patents related to the related technology, such as a stepped combined shearing blade with the Chinese patent publication number of CN103692013A, a hydraulic shearing machine with a stepped composite blade with the Chinese patent publication number of CN203697067U, a scrap car packaging longitudinal and transverse composite shearing machine with the Chinese patent publication number of CN103879011A, a continuous cutting edge longitudinal and transverse composite shearing machine with the Chinese patent publication number of CN103878433A and the like, and the stepped combined shearing blade mainly adopts concave and convex type cutters which are matched and arranged up and down and are tangent up and down, so that waste steel plates and steel materials to be recycled are simultaneously cut along the transverse direction and the longitudinal direction, and can be cut into small steel blocks by feeding in one direction, and the steel blocks are convenient to recycle.
Because the blade is a quick-wear part, the blade needs to be replaced in time after being used for a period of time, and the production can be ensured to continue; for the production convenience, this type of equipment at present, the blade all independently produces into the single-edged blade, installs on a shear plane, and blade set screw is fixed in the blade holder is twisted to along the horizontal direction on vertical face.
Although the tool apron is generally provided with a matched mounting groove for mounting the blade and resisting the vertical shearing force generated in the process that the upper shearing knife presses the lower shearing knife downwards; however, when the upper shearing knife rises after shearing is finished and is separated from the lower shearing knife, the residual waste between the blades is blocked, so that the blades bear the separating force opposite to the shearing force. In particular, the lower shearing knife is in a fixed position and continuously bears the disengaging force; in order to facilitate the installation of the blade, gaps exist between the fixing screw and the installation hole on the blade and between the fixing screw and the threaded hole on the cutter holder; the separation force drives the blade on the lower shearing knife to move upwards, and frequently, the fixing screw can be loosened, so that the safe and reliable operation of the shearing knife and the shearing machine is influenced.
There is a need for an improved lower shear blade structure, and particularly a lower shear blade structure and attachment means for a multi-blade shear, to improve the reliability of the shear operation.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a cascaded multitool is cut and is sheared sword down, improves the lower shear knife atress that cascaded multitool was cut, improves the reliability of cascaded multitool cutter operation.
In order to achieve the purpose of the utility model, a stepped multi-blade shearing shear is provided, which is characterized by comprising a lower blade holder and a lower blade;
the lower tool apron is provided with a blade mounting area; a lower blade is fixed on the blade mounting area;
the blade mounting area is provided with a plurality of blade fixing screw holes, and the blade fixing screw holes are vertically arranged in the lower cutter holder;
a plurality of vertically arranged blade mounting counter bores are formed in the lower blade, and fastening screws penetrate through the blade mounting counter bores and are screwed into the blade fixing screw holes;
the cap head of the fastening screw sinks into the upper part of the blade mounting counter bore;
the cutting edge of the lower blade exceeds the vertical projection of the lower blade seat.
As a further improvement of the present invention, the lower blade is a blade having a multi-sided working edge.
Furthermore, the lower blade is provided with 4 side working cutting edges, and the 4 side working cutting edges are connected end to form a rectangle.
Furthermore, the working cutting edges at the 4 sides of the lower blade are symmetrical pairwise; the lower blade can be rotated by 90 degrees or 180 degrees for installation and fixation.
As a further improvement of the utility model, a convex positioning block is arranged on the lower cutter seat, and a positioning groove is arranged in the lower cutter blade; the positioning block is matched with the positioning groove.
Further, the positioning block is rectangular.
Still further, the rectangular side of the positioning block is parallel to or perpendicular to the rectangular side formed by the 4-side working cutting edges of the lower blade.
Furthermore, a fixing groove is arranged in the middle of the positioning block,
still further, a welding connector is arranged at the contact position of the bottom of the fixing groove and the surface of the lower tool apron.
As a further improvement, the utility model is characterized in that the lower blade is provided with an ejecting thread through hole which runs through the lower blade perpendicularly.
The utility model discloses a cascaded multitool is cut and is sheared sword down, to the atress characteristics of shearing the sword down in the cascaded multitool is cut, carried out redesign to the structure of bottom knife piece and the fixed mode of installation, more stable, reliable in the messenger shear knife use down.
Compared with the prior art, the utility model discloses a sword is cuted under cascaded multitool is cut still has following advantage:
(1) the disassembly and the assembly and the adjustment are convenient;
(2) the cutter is provided with a plurality of working blades, and can realize maintenance without accessories;
(3) the reliability and the stability of the operation of the whole machine are improved.
Drawings
FIG. 1 is an exploded view of the components of a stepped multi-blade shear-down cutting blade;
FIG. 2 is an assembled top view of the stepped multi-blade shear lower shear blade;
FIG. 3 is a side cross-sectional view of a stepped multi-blade shear lower shear blade;
reference numerals: a lower tool apron 1; a fixing screw hole 11; a positioning block 12; a fixing groove 13 to which a connecting body 14 is welded;
a lower blade 2; a blade mounting counterbore 21; a positioning groove 22;
the screws 3 are tightened.
Detailed Description
The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.
The utility model relates to a lower shearing knife of a stepped multi-knife shear, which comprises a lower knife holder 1, a blade mounting area is arranged on the lower knife holder; a lower blade 2 is fixed on the blade mounting area; the blade mounting area is provided with a plurality of blade fixing screw holes 11, and the blade fixing screw holes 11 are vertically arranged in the lower tool apron 1; a plurality of vertically arranged blade mounting counter bores 21 are arranged in the lower blade 2, fastening screws 3 penetrate through the blade mounting counter bores 21 and are screwed into the blade fixing screw holes 11, and cap heads of the fastening screws 3 sink into the upper parts of the blade mounting counter bores 21. The cutting edge of the lower blade 2 exceeds the vertical projection of the lower blade holder 1, and can be matched with the upper shearing blade to realize the shearing in the vertical direction.
The fastening screw 3 is vertically installed, so that the fastening screw 3 can be prevented from bearing shearing force in the vertical direction, and the reliability of the fastening screw 3 in the using process is improved.
When the lower blade 2 is still designed to have a single-side working edge, the number of the fastening screws 3 which can be mounted on each lower blade 2 is limited due to the limitation of mounting space, and the force which can be borne by the fastening screws is also limited, so that the lower blade 2 is still loosened.
As a further development of the invention, the bottom blade 2 is a blade with a multi-sided working edge. Preferably, the lower blade 2 has 4 side working edges, and the 4 side working edges are connected end to form a rectangle. Thus, at least 2 working blades participate in the work during each shearing operation; generally, 3 working blades participate in the work; at least 1 working blade does not participate in the work, when other blades are worn, the lower blade 2 can be directly rotated, and the working blade which does not participate in the work before is rotated to the outer side, so that the continuous work can be quickly realized.
As a further improvement of the present invention, a protruding positioning block 12 is arranged on the lower knife holder 1, and a positioning groove 22 is correspondingly arranged in the lower knife 2; the positioning block 12 is matched with the positioning groove 22, and can bear the torsion force in the horizontal direction, so that the looseness of the lower blade 2 after installation is further avoided.
The positioning block 12 is rectangular; the rectangular side of the positioning block 12 is parallel to or perpendicular to the rectangular side formed by the 4-side working cutting edges of the lower blade 2.
In order to realize the rotation of the lower blade 2 and adjust the working cutting edge, the positioning block 12 is positioned in the middle of the lower blade holder 1; when the sections of the lower blade 2 and the positioning block 12 are equilateral rectangles (squares), the position of the working edge can be adjusted every 90 degrees of rotation; when the cross sections of the lower blade 2 and the positioning block 12 are non-equilateral rectangles (non-square), the working edge position can be adjusted every 180 degrees of rotation.
The middle of the positioning block 12 is provided with a fixing groove 13, the positioning block 12 can be welded and fixed on the lower tool apron 1 by adopting a welding mode through the fixing groove 13, and the welding connector 14 formed by welding can fully fix the positioning block 12 and cannot be loosened in a threaded connection mode.
Further, a through hole 23 for ejecting threads is also formed in the lower blade 2; the ejection threaded through hole 23 is vertically arranged near the blade mounting counter bore 21 and vertically penetrates through the lower blade 2; due to the adoption of the positioning block 12, the lower blade 2 can be clamped on the positioning block 12 in the using process, so that a long screw can be screwed into the ejection thread through hole 23 and ejected through the screw in order to conveniently detach the lower blade 2.
While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the embodiments disclosed, but is capable of numerous equivalents and substitutions without departing from the spirit of the invention, and such equivalents and substitutions are intended to be included within the scope of the invention as defined by the appended claims.
Claims (10)
1. The stepped multi-cutter shearing lower shearing cutter is characterized by comprising a lower cutter holder and a lower cutter blade;
the lower tool apron is provided with a blade mounting area; a lower blade is fixed on the blade mounting area;
the blade mounting area is provided with a plurality of blade fixing screw holes, and the blade fixing screw holes are vertically arranged in the lower cutter holder;
a plurality of vertically arranged blade mounting counter bores are formed in the lower blade, and fastening screws penetrate through the blade mounting counter bores and are screwed into the blade fixing screw holes;
the cap head of the fastening screw sinks into the upper part of the blade mounting counter bore;
the cutting edge of the lower blade exceeds the vertical projection of the lower blade seat.
2. A stepped, multi-shear lower shear knife according to claim 1, wherein said lower blade is a blade having a multi-sided working edge.
3. A stepped, multi-shear lower shear blade as defined in claim 2, wherein said lower blade has 4 side working edges, the 4 side working edges being rectangular in shape end to end.
4. A stepped multi-shear lower shear blade as in claim 3, wherein said lower blade 4 side working edges are symmetrical two by two; the lower blade can be rotated by 90 degrees or 180 degrees for installation and fixation.
5. A stepped multi-blade shear lower cutter as defined in claim 3, wherein said lower cutter base is provided with a projecting positioning block, and a positioning groove is provided in said lower blade; the positioning block is matched with the positioning groove.
6. The stepped, multi-shear lower shear knife of claim 5, wherein the locating block is rectangular.
7. The stepped, multi-shear lower shear knife of claim 6, wherein the rectangular edge of the locating block is parallel or perpendicular to the rectangular edge defined by the 4-sided working edge of the lower blade.
8. A stepped multi-shear downward shear knife according to claim 5, wherein a retaining groove is provided in the middle of the locating block.
9. A stepped multi-blade shear knife according to claim 8, wherein a welded connection is provided at a portion where the bottom of the fixing groove contacts the surface of the lower blade holder.
10. A stepped, multi-shear lower shear blade according to claim 5, wherein said lower blade is provided with a through, raised threaded aperture extending vertically through said lower blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021142216.9U CN212823052U (en) | 2020-06-18 | 2020-06-18 | Stepped multi-cutter shearing cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021142216.9U CN212823052U (en) | 2020-06-18 | 2020-06-18 | Stepped multi-cutter shearing cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212823052U true CN212823052U (en) | 2021-03-30 |
Family
ID=75175425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021142216.9U Active CN212823052U (en) | 2020-06-18 | 2020-06-18 | Stepped multi-cutter shearing cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212823052U (en) |
-
2020
- 2020-06-18 CN CN202021142216.9U patent/CN212823052U/en active Active
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