CN212096536U - One-way clamping device of cutting knife of edge cutting mechanism - Google Patents
One-way clamping device of cutting knife of edge cutting mechanism Download PDFInfo
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- CN212096536U CN212096536U CN202020644513.7U CN202020644513U CN212096536U CN 212096536 U CN212096536 U CN 212096536U CN 202020644513 U CN202020644513 U CN 202020644513U CN 212096536 U CN212096536 U CN 212096536U
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Abstract
The utility model discloses an one-way clamping device of cutting edge mechanism cut-off knife, cutting edge mechanism includes cutter unit spare (1), bed knife subassembly (2) and cutting edge headstock (3), it establishes including pivot (1-1), cover to go up cutter unit spare (1) outer seat (1-2) of pivot (1-1) and fix cut-off knife (1-3) on outer seat (1-2), the pivot of bed knife subassembly (2) and the cooperation structure of outer seat with go up cutter unit spare (1) the same, outer seat (1-2) with be equipped with one-way clamping mechanism between pivot (1-1), one-way clamping mechanism includes along elasticity overcoat (4) and elasticity endotheca (5) of radial arrangement, elasticity overcoat (4), elasticity endotheca (5) are the wedge after expanding along circumference, just elasticity overcoat (4), The wedge-shaped surface (C) of the elastic inner sleeve (5) is abutted. The utility model provides an one-way clamping device of cut-off edge mechanism cut-off knife can be with the one-way clamp of outer seat tight in the pivot.
Description
Technical Field
The utility model relates to a coating equipment technical field, in particular to one-way clamping device of cut-off edge mechanism cut-off knife.
Background
In the production process of gumming and drying, before gumming base paper is dipped, the waste edge is cut off by an edge cutting mechanism. Referring to fig. 1, the prior art edge cutting knife comprises an upper knife assembly 100, a bottom knife assembly 200, an edge cutting power box 300, and the like, and when the edge cutting knife works, the upper knife assembly 100 is firstly fixed, and then the positions of the bottom knife and the upper knife are adjusted. The upper knife assembly 100 and the bottom knife assembly 200 are operated in opposite directions by the trimming power box 300, so that the paper tape 400 passes between the upper knife and the bottom knife, and trims waste edges on both sides of the paper tape 400. The upper knife assembly 100 and the bottom knife assembly 200 both include a rotating shaft 101, an outer base 102 sleeved outside the rotating shaft 101, and a cutting knife 103 fixed on the outer base 102, and during installation, the outer base 102 needs to be clamped on the rotating shaft 101, so that the rotating shaft 101 drives the cutting knife 103 on the outer base 102 to rotate. The cutting knife requires a special clamping mechanism to clamp the outer holder 102 on the rotating shaft 101, which is inconvenient to disassemble.
SUMMERY OF THE UTILITY MODEL
To the problem among the prior art, the utility model aims at providing an one-way clamping device of cutting edge mechanism cut-off knife can be with the one-way clamp of outer seat tight in the pivot.
Based on the above problem, the utility model provides a technical scheme is:
one-way clamping device of cutting edge mechanism cut-off knife, cutting edge mechanism includes cutter unit spare, lower cutter unit spare, and cuts off the limit headstock, it includes pivot, cover and establishes to go up the cutter unit spare outer seat in the pivot and fix cut-off knife on the outer seat, the pivot of bed knife subassembly and the cooperation structure of outer seat with it is the same to go up the cutter unit spare, outer seat with be equipped with one-way clamping mechanism between the pivot, one-way clamping mechanism includes along the elasticity overcoat and the elasticity endotheca of radially arranging, elasticity overcoat, elasticity endotheca are the wedge after expanding along circumference, just the wedge looks butt of elasticity overcoat, elasticity endotheca.
In some embodiments, the elastic outer sleeve and the elastic inner sleeve are arranged in a disconnected mode in the circumferential direction.
In some embodiments, each of the elastic outer sleeve and the elastic inner sleeve includes a bottom surface, two side surfaces disposed at two ends of the bottom surface in a length direction, a wedge surface connecting the two side surfaces, and two end surfaces located in an axial direction of the bottom surface, the bottom surface of the elastic outer sleeve abuts against the outer seat, and the bottom surface of the elastic inner sleeve abuts against the rotating shaft.
In some embodiments, the inner wall of the outer seat is provided with a mounting groove, and the elastic outer sleeve and the elastic inner sleeve are arranged in the mounting groove.
In some of these embodiments, the angle ψ of the wedge faces is smaller than the friction angle p,
in some of these embodiments, the wedge faces have an angle ψ < 5 °.
Compared with the prior art, the utility model has the advantages that:
the elastic outer sleeve and the elastic inner sleeve are arranged between the outer seat and the rotating shaft, so that unidirectional clamping can be realized when the rotating shaft rotates in one direction, the outer seat can conveniently rotate along with the rotating shaft, and the paper tape can be cut by the cutter; when the rotating shaft rotates towards the other direction, the outer seat can be loosened from the rotating shaft, and the outer seat can be conveniently detached from the rotating shaft.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of a cutting blade according to the prior art;
FIG. 2 is a schematic structural view of an embodiment of a one-way clamping device of the cutting knife of the edge cutting mechanism of the present invention;
fig. 3 is a schematic structural view of another direction of the embodiment of the present invention;
fig. 4 is a schematic view of a usage status of the embodiment of the present invention;
FIG. 5 is a force analysis diagram of the elastic inner sleeve in the initial state according to the embodiment of the present invention;
FIG. 6 is a force analysis diagram of the elastic outer sleeve in the clamped state according to the embodiment of the present invention;
FIG. 7 is a force analysis diagram of the elastic outer cover in a released state according to the embodiment of the present invention;
wherein:
100. an upper knife assembly; 101. a rotating shaft; 102. an outer seat; 103. a cutter; 200. a bed knife assembly; 300. Cutting the edge of the power box; 400. a paper strap;
1. an upper knife assembly; 1-1 rotating shaft; 1-2, an outer seat; 1-2a, mounting grooves; 1-3, cutting knife;
2. a bed knife assembly;
3. cutting the edge of the power box;
4. an elastic outer sleeve;
5. an elastic inner sleeve;
A. a bottom surface;
B. a side surface;
C. a wedge-shaped surface;
D. an end face.
Detailed Description
The above-described scheme is further illustrated below with reference to specific examples. It should be understood that these examples are for illustrative purposes and are not intended to limit the scope of the present invention. The conditions used in the examples may be further adjusted according to the conditions of the particular manufacturer, and the conditions not specified are generally the conditions in routine experiments.
Referring to fig. 2-4, for the structural schematic diagram of the embodiment of the present invention, an one-way clamping device for a cutting knife of a cutting edge mechanism is provided, the cutting edge mechanism includes an upper knife assembly 1, a bottom knife assembly 2, and a cutting edge power box 3, wherein the upper knife assembly includes a rotating shaft 1-1, an outer seat 1-2 sleeved outside the rotating shaft 1-1, and a cutting knife 1-3 fixed on the outer seat 1-2, the rotating shaft 1-1 is connected with the cutting edge power box 3 to drive the cutting knife 1-3 on the outer seat 1-2 to rotate, and the matching structure of the rotating shaft of the bottom knife assembly 2 and the outer seat is the same as that of the upper knife assembly 1. In order to realize the unidirectional clamping between the outer seat 1-2 and the rotating shaft 1-1, a unidirectional clamping mechanism is arranged between the outer seat 1-2 and the rotating shaft 1-1, the unidirectional clamping mechanism comprises an elastic outer sleeve 4 and an elastic inner sleeve 5 which are arranged along the radial direction, the elastic outer sleeve 4 and the elastic inner sleeve 5 are in a wedge shape after being unfolded along the circumferential direction, and the wedge surfaces of the elastic outer sleeve 4 and the elastic inner sleeve 5 are abutted. The wedge faces have an angle psi < p, p being the angle of friction, preferably psi < 5 °.
In this embodiment, the elastic outer sleeve 4 and the elastic inner sleeve 5 are arranged in a disconnected manner in the circumferential direction, that is, the elastic outer sleeve 4 and the elastic inner sleeve 5 are provided with a notch in the circumferential direction, and the notches of the two are corresponding.
Specifically, the elastic outer sleeve 4 and the elastic inner sleeve 5 both comprise a bottom surface A, two side surfaces B arranged at two ends of the bottom surface A in the length direction, a wedge-shaped surface C connected with the two side surfaces B, and two end surfaces D positioned in the axial direction of the bottom surface A, wherein the two side surfaces B form a big end and a small end, the bottom surface A of the elastic outer sleeve 4 is abutted with the outer seat 1-2, and the bottom surface A of the elastic inner sleeve 5 is abutted with the rotating shaft 1-1. Referring to fig. 6-7, the first arrangement mode is that the unidirectional clamping mechanism is expanded along the circumferential direction, at this time, when the rotating shaft 1-1 rotates counterclockwise, the outer seat 1-2 is clamped with the rotating shaft 1-1, and when the rotating shaft 1-1 rotates clockwise, the outer seat 1-2 is loosened with the rotating shaft 1-1; the one-way clamping mechanism is in a second arrangement mode after being turned left and right in the axial position, at the moment, when the rotating shaft 1-1 rotates clockwise, the outer seat 1-2 is clamped with the rotating shaft 1-1, and when the rotating shaft 1-1 rotates anticlockwise, the outer seat 1-2 is loosened with the rotating shaft 1-1.
In order to facilitate the installation of the one-way clamping mechanism, the inner wall of the outer seat 1-2 is provided with an installation groove 1-2a, and the elastic outer sleeve 4 and the elastic inner sleeve 5 are arranged in the installation groove 1-2 a.
Taking the first arrangement as an example to analyze the stress conditions of the elastic outer sleeve 4 and the elastic inner sleeve 5 during clamping and loosening, the angle of the wedge-shaped surface C is psi, because the elastic outer sleeve 4 and the elastic inner sleeve 5 have elasticity, initially, the elastic outer sleeve 4 is tightly attached to the outer base 1-2 under the action of elasticity, the elastic inner sleeve 5 is freely loosened in the outer base 1-2, and after the rotating shaft 1-1 is inserted into the elastic inner sleeve 5, the elastic inner sleeve 5 and the rotating shaft 1-1 are under the action of elasticityThe lower part is tightly attached, see fig. 5, at the beginning, the counterforce F generated by the elastic force0nThe maximum friction force F generated by the rotating shaft 1-1 and the elastic inner sleeve 50f＝f*F0nAnd F is the coefficient of friction, in which case F0fAnd F0nResultant force of F0r，F0nAnd F0rThe included angle is ρ, the rubbing angle.
When clamping, as shown in fig. 6, F acting on the elastic sheath 4 is a driving force, and the radial load Fd acting on the rotating shaft 1-1 is a resistance force, total reaction force Fr. During the clamping process, the three forces acting on the elastic casing 4 are balanced, and F ═ Fd · tg (ψ + ρ) can be obtained.
When the shaft is loosened, as shown in fig. 7, the radial load Fd acting on the rotating shaft 1-1 is the driving force, and the force F is the force that needs to be loaded when the shaft is loosened, so that F ═ Fd \ (ρ - ψ) can be obtained, and as can be seen from the above formula, when ρ - ψ > 0, i.e., ψ < ρ, F > 0, an external force must be applied when the shaft is loosened, otherwise the elastic inner sleeve 5 and the elastic outer sleeve 4 cannot be loosened, and are in a self-locking state, and when ρ - ψ < 0, i.e., ψ > ρ, F < 0, the elastic outer sleeve 4 and the elastic inner sleeve 5 cannot be clamped.
Because the elastic inner sleeve 5 has elasticity, the counter force F is initially generated on the rotating shaft 1-10nAfter clamping, the counter force of the elastic inner sleeve 5 to the rotating shaft 1-1 is Fd + F0nI.e. the friction force F generated between the elastic inner sleeve 5 and the rotating shaft 1-1f＝f*(Fd+F0n) With increasing clamping force, FfIs also enlarged, thereby playing a role of unidirectional clamping. The stress condition of the elastic outer sleeve 4 and the outer seat 1-2 is similar to the stress condition of the elastic inner sleeve 5 and the rotating shaft 1-1, and the description of the utility model is omitted.
The above examples are only for illustrating the technical conception and the features of the present invention, and the purpose thereof is to enable one skilled in the art to understand the contents of the present invention and to implement the present invention, which should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (6)
1. One-way clamping device of cutting edge mechanism cut-off knife, cutting edge mechanism includes cutter unit spare (1), bed knife subassembly (2) and cutting edge headstock (3), it establishes including pivot (1-1), cover to go up cutter unit spare (1) outer seat (1-2) of pivot (1-1) and fix cut-off knife (1-3) on outer seat (1-2), the pivot of bed knife subassembly (2) and the cooperation structure of outer seat with it is the same to go up cutter unit spare (1), its characterized in that: outer seat (1-2) with be equipped with one-way clamping mechanism between pivot (1-1), one-way clamping mechanism includes along elasticity overcoat (4) and elasticity endotheca (5) of radial arrangement, elasticity overcoat (4), elasticity endotheca (5) are the wedge after expanding along circumference, just wedge face (C) looks butt of elasticity overcoat (4), elasticity endotheca (5).
2. The one-way clamping device of the edge cutting mechanism cutter according to claim 1, characterized in that: the elastic outer sleeve (4) and the elastic inner sleeve (5) are arranged in a disconnected mode in the circumferential direction.
3. The one-way clamping device of the edge cutting mechanism cutter according to claim 2, characterized in that: elasticity overcoat (4), elasticity endotheca (5) all include a bottom surface (A), set up and are in both sides face (B) at bottom surface (A) length direction both ends, connect wedge face (C) of both sides face (B) and be located bottom surface (A) axial both ends face (D), bottom surface (A) of elasticity overcoat (4) with outer seat (1-2) looks butt, bottom surface (A) of elasticity endotheca (5) with pivot (1-1) looks butt.
4. The one-way clamping device of the edge cutting mechanism cutter according to claim 1, characterized in that: the inner wall of the outer seat (1-2) is provided with a mounting groove (1-2a), and the elastic outer sleeve (4) and the elastic inner sleeve (5) are arranged in the mounting groove (1-2 a).
5. The one-way clamping device of the edge cutting mechanism cutter according to claim 1, characterized in that: the wedge-shaped surface (C) has an angle psi smaller than the friction angle p.
6. The one-way clamping device of the edge cutting mechanism cutter according to claim 5, characterized in that: the angle psi of the wedge-shaped surface (C) is less than 5 deg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020644513.7U CN212096536U (en) | 2020-04-24 | 2020-04-24 | One-way clamping device of cutting knife of edge cutting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020644513.7U CN212096536U (en) | 2020-04-24 | 2020-04-24 | One-way clamping device of cutting knife of edge cutting mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212096536U true CN212096536U (en) | 2020-12-08 |
Family
ID=73612384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020644513.7U Active CN212096536U (en) | 2020-04-24 | 2020-04-24 | One-way clamping device of cutting knife of edge cutting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212096536U (en) |
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2020
- 2020-04-24 CN CN202020644513.7U patent/CN212096536U/en active Active
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