CN214693905U - Knife roller of chopping machine - Google Patents

Abstract

The utility model relates to a knife roll of a chopping machine, which comprises a knife roll shaft, a blade and a convex part; the outer peripheral surface of the cutter roll shaft is provided with a first installation space and a second installation space at intervals, and the first installation space and the second installation space are arranged in parallel and are arranged along the axial direction of the cutter roll shaft; the blade is movably received in the first mounting space; when the cutter roller shaft rotates, the blade can move along the radial direction of the cutter roller shaft in the first installation space; the first end of the protruding part is arranged in the second installation space, and the second end of the protruding part extends out of the second installation space along the radial direction of the cutter roller shaft to be in contact with the fiber filaments. The utility model discloses a set up the bulge on the cutter roller axle, need not to set up the pinch roller, just can realize the short operation of fibre silk, avoid the clearance to twine the yarn, production efficiency is high, and the blade adopts the installation form that floats moreover, can avoid the sword groove to block up, and the fibre cuts off effectually.

Description

Knife roller of chopping machine

Technical Field

The utility model belongs to the technical field of glass fiber cutting equipment, particularly, relate to a chopping machine rotor.

Background

The chopping machine is a commonly used fiber cutting device at present, has a commonly used structure that a knife roller and a rubber roller rotate relatively to cut off fibers at present, and has the characteristics of high production efficiency and low energy consumption.

Because the engagement of the knife roller and the rubber roller is actually realized by poking the rubber roller to rotate by the knife tip, when the chopping machine cuts long fibers, if the former blade cuts the fibers, the latter blade is not engaged with the rubber roller, the fibers are easy to fall off, and at this time, the machine needs to be loaded again. As shown in figure 1, the existing chopping equipment is that a pressing wheel 300 is arranged above the meshing part of a knife roll 100 and a rubber roll 200, the pressing wheel 300 and the rubber roll 200 extrude fibers for feeding, once the fibers are broken, the broken fibers are wound on the pressing wheel 300, the yarn feeding is affected without cleaning, the cleaning work is very troublesome, and the working efficiency is low.

In addition, the glass fiber surface is adhered with the impregnating compound, so that the glass fiber surface is high in viscosity and is easy to adhere to the surface of the blade and plug into the cutter groove in the cutting process; after the fibers are cut off, part of the fibers cannot automatically fall off but stick between adjacent blades, so that yarn arrangement is not favorable; meanwhile, the fibers stuck between the blades can cause that the blades are too shallow to cut off subsequent fibers when the fibers are continuously cut into threads, even winding or thread breakage is caused, the abrasion of the blades is aggravated, the product quality is unstable, the blades need to be replaced and the knife roller needs to be cleaned every several hours of work, and the production efficiency is seriously influenced.

SUMMERY OF THE UTILITY MODEL

In view of foretell analysis, the utility model aims at providing a chopping machine rotor for solve current chopping machine and lean on pinch roller and rubber roll extrusion fibre pay-off, the cleaning work of pinch roller is very troublesome, leads to work efficiency low, and the easy jam of sword groove makes the easy wearing and tearing of blade moreover, and then leads to the unstable problem of cellosilk product quality.

The purpose of the utility model is realized like this:

a chopping machine knife roll comprising:

the cutter roll shaft is provided with a first installation space and a second installation space at intervals on the outer peripheral surface, and the first installation space and the second installation space are arranged in parallel and are arranged along the axial direction of the cutter roll shaft;

a blade movably received in the first mounting space; when the cutter roller shaft rotates, the blade can move along the radial direction of the cutter roller shaft in the first installation space;

and the first end of the protruding part is arranged in the second installation space, and the second end of the protruding part extends out of the second installation space along the radial direction of the cutter roller shaft to be in contact with the fiber filaments.

Further, the end surface of the second end of the projection has elasticity.

Further, the projection is made of a polyurethane material.

Further, the chopping machine knife roller further comprises pressing covers, the pressing covers are installed at two ends of the knife roller shaft, and a first installation space and a second installation space are formed by the pressing covers and the first installation groove and the second installation groove which are formed in the outer peripheral surface of the knife roller shaft.

Further, the second mounting groove is an arc along the radial section contour line of the cutter roll shaft, and the outer peripheral surface of the first end of the protruding part is matched with the inner wall surface of the second mounting groove.

Further, the blade is trapezoidal blade, including cutter body and cutting edge, and the length of cutting edge is less than the bottom length of cutter body, and at least partly activity card of cutter body is located in first installation space.

Further, the height of the blade is larger than the depth of the first mounting groove, the length of the bottom of the cutter body is smaller than the length of the first mounting groove, the thickness of the cutter body is smaller than the width of the first mounting groove, and the blade can move in the first mounting space along the axial direction of the cutter roller shaft.

Furthermore, the gland is provided with a first limiting part and a second limiting part, and the first limiting part is used for limiting the moving distance of the cutter body in the first mounting groove and preventing the cutter body from falling off the first mounting groove; the second restriction portion is used for fixing the restriction protrusion in the second mounting groove.

Furthermore, the first mounting groove is radially and uniformly arranged along the radial direction of the cutter roller shaft, the first mounting groove is provided with a groove bottom, a groove wall and a groove opening, and the sum of the groove depth of the first mounting groove and the distance from the groove bottom to the central line of the cutter roller shaft is equal to the radius of the cutter roller shaft.

Further, the gland is installed at both ends of the cutter roller shaft through screws.

Compared with the prior art, the utility model discloses can realize one of following beneficial effect at least:

a) the utility model provides a chopping machine rotor through set up the bulge between the blade of rotor shaft, the terminal surface of bulge has elasticity, can increase the frictional force between rotor and the fibre, utilizes bulge and rubber roll extrusion contact and drives the material motion on the rubber roll, need not to set up the pinch roller, just can realize the short operation of fibre silk, can avoid clearing up the trouble of twining the yarn, promotes production efficiency.

b) The utility model provides a chopping machine rotor adopts unsteady blade structure, because the rotor rotates at a high speed in the cutting process, the blade can produce the high frequency vibration in the second mounting groove, the blade surface adhered to's infiltrant and fibre can in time shake down in the high frequency vibration, guarantee the sharpness of blade, need not frequently to shut down and clean, reduce blade wearing and tearing moreover, glass fiber's the effect of cutting off has not only been guaranteed, and reduce the frequency that the blade was changed moreover, thereby the life of extension rotor improves production efficiency by a wide margin.

Drawings

In order to more clearly illustrate the embodiments of the present specification or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the embodiments of the present specification, and other drawings can be obtained by those skilled in the art according to the drawings.

FIG. 1 is a schematic view showing the working states of a knife roller and a rubber roller of a chopping machine in the prior art;

FIG. 2 is a first schematic structural view of a knife roll of a chopping machine of the present invention;

FIG. 3 is a schematic structural view of a knife roll of a chopping machine of the present invention;

FIG. 4 is an enlarged view of a portion of area A of FIG. 3;

fig. 5 is a schematic structural view of the protruding portion of the present invention;

fig. 6 is a side end view of the projection of the present invention;

fig. 7 is a side view of the projection of the present invention;

fig. 8 is a schematic structural view of the blade of the present invention.

Reference numerals:

100-existing knife roll; 200-rubber roller; 300-pinch roller;

1-a cutter roll shaft; 2-pressing the cover; 3-a blade; 31-a first inclined side end face; 4-a projection; 41-a second inclined side end face; 42-vertical end face.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

For the purpose of facilitating understanding of the embodiments of the present application, the following description will be made in terms of specific embodiments with reference to the accompanying drawings, which are not intended to limit the embodiments of the present application.

The utility model discloses a concrete embodiment discloses a chopping machine rotor, as shown in fig. 2 to 4, include:

the cutter roller shaft comprises a cutter roller shaft 1, wherein first mounting grooves and second mounting grooves are formed in the peripheral surface of the cutter roller shaft 1 at intervals, a second mounting groove is formed between every two adjacent first mounting grooves, and the first mounting grooves and the second mounting grooves are arranged in parallel and are arranged along the axial direction of the cutter roller shaft 1;

the gland 2 is arranged at two ends of the cutter roller shaft 1, and a first mounting space and a second mounting space are respectively formed by the gland 2, the first mounting groove and the second mounting groove;

the blade 3 comprises a blade body and a cutting edge, the blade body is arranged in a first installation space in a floating mode, the blade body can move in the first installation space along the radial direction and the axial direction of the cutter roller shaft 1, the cutting edge always extends out of the first installation space along the radial direction of the cutter roller shaft 1, and the blade body can move in the first installation space along the radial direction of the cutter roller shaft 1, can move in the axial direction of the cutter roller shaft 1 and can obliquely swing in the blade installation space;

and the first end of the protruding part 4 is arranged in the second installation space, and the second end of the protruding part 4 extends out of the second installation space along the radial direction of the cutter roller shaft 1 to be in contact with the fiber filaments.

In this embodiment, the first mounting groove is a knife groove and is used for mounting a blade, the first mounting groove is provided with a groove bottom, a groove wall and a groove opening, the blade 3 is arranged along the knife groove direction, the cutting edge is uniformly arranged outwards, the width of the knife groove is greater than the thickness of the blade, the length of the knife groove is slightly greater than the length of the blade 3, the cutting edge of the blade is higher than the outer diameter of a knife roller shaft, and the second mounting groove is a clamping groove and is used for mounting a protruding part.

When shredding, the rubber roll rotates and sends the cellosilk to the rotor, the rotor rotates at a high speed under the drive of actuating mechanism, the rotor meshes with the rubber roll, because the one end of bulge is fixed in the second installation space, the other end radially outwards surpasses the outer peripheral face of rotor shaft in the rotor shaft, rotor and rubber roll rotate along the relative direction in order to mutually support, the part that the bulge surpasses rotor shaft outer peripheral face can with rubber roll extrusion contact to drive the material motion on the rubber roll, cut the cellosilk by the blade of rotor. Because the blades 3 are in a movable state in the second mounting space, the blades 3 at different positions on the knife roller have different inclined states and different blade extending heights, when the blades are far away from the rubber roller, the bottom of the knife body is separated from the bottom of the first mounting groove under the action of centrifugal force and is in a floating state; when the cutting edge of the blade is contacted with the rubber roll and extruded, the blade is extruded back to the bottom of the first mounting groove, and the blade can incline under the action of stress because the width of the first mounting groove is larger than the thickness of the blade, the wire is cut off by the cutting edge at the meshing part of the knife roll and the rubber roll, and the wire is continuously cut by the reciprocating circulation.

Compare with current rotor, the rotor of this embodiment through set up the bulge between the blade at the rotor axle, utilizes the bulge and rubber roll extrusion contact and drives the material motion on the rubber roll, need not to set up the pinch roller, just can realize the short operation of fibre silk, can avoid the clearance to twine the trouble of yarn, promotes production efficiency. And, the blade adopts the floating installation structure, and the blade can produce the high frequency vibration in the second mounting groove, and the high frequency vibration can in time shake off the compound sizing agent and the cellosilk that shake off blade surface adhesion, and the cutting edge remains sharp state throughout, need not frequently to shut down and cleans, can continuously cut off follow-up fibre, and greatly reduced blade wearing and tearing not only guarantee glass fiber's cutting-off effect, and product quality is more stable, reduces the frequency that the blade was changed moreover, has improved production efficiency.

In order to increase the friction between the end of the projection 4 and the fibre thread, the end surface of the second end of the projection 4 is resilient.

In an alternative embodiment of this embodiment, the entire projection 4 is resilient, and the projection 4 is made of a polyurethane material. Further, the convex parts 4 can be sleeved on the cutter roller shaft, the convex parts are connected through a lantern ring, the lantern ring can be sleeved on the cutter roller shaft, one end of each convex part 4 is integrally arranged on the outer circumferential surface of the lantern ring, and the first mounting groove is located between every two adjacent convex parts 4; it is also possible to use a polyurethane strip of a strip-like structure, as shown in fig. 5, in which the projection 4 of the strip-like structure is fixed in the second installation space on the outer circumferential surface of the cutter roller shaft.

In order to ensure the shredding quality, when all the cutter bodies abut against the bottom of the first mounting groove, the cutting edge is positioned on a first reference circle, and the first reference circle has a first radius; when all cutting edges furthest stretched out first installation space, the cutting edge was located second graduation circle, and second graduation circle has the second radius, and the centre of a circle of first graduation circle and second graduation circle is located the axis of cutter roller axle 1, and this structural setting can guarantee the degree of consistency of product, reduces the rejection rate of product.

Further, the highly be greater than the groove depth of second mounting groove of bulge 4, the terminal surface that bulge 4 stretches out second installation space is the arcwall face, and the terminal surface of 4 second ends of bulge is evagination arcwall face promptly, and the arcwall face of a plurality of second ends is located third degree circle, and third degree circle has the third radius. The peripheral surface of the cutter roller shaft 1 is provided with a fourth radius, the third radius is larger than the fourth radius and smaller than the first radius, and the convex arc-shaped end surface of the convex part 4 is higher than the outer surface of the cutter roller shaft and is lower than the height of the cutting edge. The end face extending out of the second installation space of the protruding part 4 is set to be an arc-shaped face, the arc-shaped face is convenient for driving the fiber yarns and pressing the fiber yarns, and the arc-shaped face can be in contact with the rubber roller to form an arc surface in the pressing process, so that the fiber yarns can be pressed conveniently.

In order to improve the installation stability of the convex part and prevent the convex part from swinging or falling out of the second installation groove in the shredding process, the groove wall surface of the second installation groove is a circular arc-shaped curved surface, the section of the circular arc-shaped curved surface along the radial direction of the cutter roller shaft 1 is an arc, namely, the central angle of the section contour line of the second installation groove vertical to the axis of the cutter roller shaft 1 is more than 180 degrees so as to prevent the convex part 4 from falling off; the radial cross section contour line of bulge 4 comprises the evagination arc curve of second end and the major arc curve of first end, as shown in fig. 6, the outer peripheral face and the spill curved surface looks adaptation of the first end of bulge 4, can seamless installation in the second mounting groove, set up to the arcwall face through the outer peripheral face with bulge 4, increase the area of contact of bulge 4 and second mounting groove, can effectively avoid leading to the bulge to relax and warp because of cutting vibrations, the installation stability of bulge has been improved, further guarantee the degree of consistency of product, reduce the rejection rate of product.

Further, the axial length of the arc-shaped surface of the second end of the protruding part 4 is equal to the axial length of the outer peripheral surface of the cutter roller shaft 1, the sum of the central angles of the arc-shaped surfaces of the second ends of all the protruding parts 4 is 210-250 degrees, the area of the arc-shaped surface of the second end of the protruding part 4 is increased, the cutter roller can be in extrusion contact with the rubber roller when rotating, and the working stability of the cutter roller is improved.

In this embodiment, the blade 3 can move in the first installation space, the first installation space has a first depth, the second installation space has a second depth, the width of the blade face of the blade 3 is greater than the first depth, the blade extends out of the first installation space, the height of the protruding portion 4 is greater than the second depth, and the protruding end of the protruding portion 4 can be in press contact with the rubber roller when the knife roller rotates. The thickness of cutter body is less than the width of first mounting groove, and the length of blade 3 slightly is less than the length of first mounting groove, and at least partly activity card of cutter body is located in the first installation space.

Further, the blade 3 is a trapezoidal blade, as shown in fig. 8, the longitudinal section of the blade 3 is trapezoidal, the length of the cutting edge is smaller than the length of the bottom of the blade body, the height of the blade 3 is greater than the depth of the first mounting groove, and the length of the bottom of the blade body is smaller than the length of the first mounting groove.

In this embodiment, the gland 2 is provided with a first limiting portion and a second limiting portion, the first limiting portion is used for limiting the moving distance of the cutter body in the first mounting groove and preventing the cutter body from falling off the first mounting groove; the second restriction portion is used to fix the restriction projection 4 in the second mounting groove, preventing the projection 4 from moving in the radial and axial directions of the cutter roller shaft 1.

The blade 3 has first inclined side end surfaces 31 at both ends thereof, and the first restriction portion is provided with a first inclined restriction surface parallel to the first inclined side end surfaces 31. When the cutter body moves outward in the radial direction of the cutter roller shaft 1 in the first mounting groove, a part of the upper part of the first inclined side end surface 31 extends out of the notch of the first mounting groove, the lower part of the first inclined side end surface 31 abuts against the limiting part, and the limiting part limits the cutter body from further moving outward. Of course, the restricting portion of the gland 2 can also restrict the axial movement range of the cutter body. The cutter body has the biggest displacement distance in the radial in-process of moving to the notch by the tank bottom of first mounting groove along the cutter roller axle 1 in first mounting groove, and when the cutter body moved to the biggest displacement distance, the first slope side end face of both sides of blade 3 contacted with the spacing face of the first slope of the first restriction portion of both sides gland, and the straight line in cutting edge place was parallel with the tank bottom place plane of first mounting groove this moment.

In an optional implementation manner of this embodiment, the axial cross section of the protruding portion 4 is an isosceles trapezoid, two ends of the protruding portion 4 have second inclined side end surfaces 41, the second limiting portion is provided with a second inclined limiting surface, the second inclined limiting surface is in seamless contact with the second inclined side end surfaces 41, and the protruding portion 4 is fixed in the second installation space by using the second inclined limiting surface provided by the second limiting portion, so that the protruding portion is prevented from moving in the cutting process.

In this embodiment, the spacing face of first slope and the spacing face of second slope can the coplane, under the coplane condition, owing to guarantee that blade 3 removes in the certain limit of second installation space, and make bulge 4 fixed, bulge 4's length will be greater than blade 3's length, bulge 4 installs behind the second installation space, gland and bulge 4's both ends face extrusion contact, through with the spacing face of first slope and the spacing face coplane setting of second slope, reduce the processing and the installation degree of difficulty.

In an alternative embodiment of this embodiment, the end surfaces of the two ends of the protruding portion 4 include an obliquely arranged isosceles trapezoid surface and a vertically arranged rectangular surface, the isosceles trapezoid surface and the rectangular surface are arranged at an obtuse angle, specifically, as shown in fig. 7, the side end surfaces of the two ends of the protruding portion 4 include a second oblique side end surface 41 and a vertical end surface 42, the second oblique side end surface 41 is an isosceles trapezoid, and the second oblique side end surface 41 is matched with the first oblique side end surface 31 of the insert 3, so as to improve the mounting accuracy; vertical terminal surface 42 is the rectangle, and vertical terminal surface 42 highly equals the height of 1/8-1/4 bulge, can prevent through setting up vertical terminal surface 42 that bulge 4 length and terminal surface angle error are too big, causes the bulge both ends to stretch out the overlength, influences the installation accuracy to the installation stability and the shred effect of bulge 4 have effectively been improved.

In the preferred embodiment of the present invention, the pressing cover 2 is detachably mounted at both ends of the knife roller shaft 1 by screws, and the pressing cover 2 is configured as a detachable structure, so that the blade can be conveniently detached and replaced.

In this embodiment, the groove depth of the first mounting groove is D, the radius of the cutter roller shaft 1 is R, and the distance from the groove bottom of the first mounting groove to the center line of the cutter roller shaft 1 is L. The arrangement mode of first mounting groove has following two kinds:

the first arrangement structure of first mounting groove, first mounting groove are radially evenly arranged along the radial of sword roller axle 1, and the groove depth of first mounting groove and the tank bottom of first mounting groove are equal to the radius of sword roller axle 1 to the distance sum of the central line of sword roller axle 1, also R ═ D + L.

The second kind of arrangement structure of first mounting groove, first mounting groove and the radial certain inclination setting that is of sword roller axle 1, preferred 2-7, along 1 circumferencial direction evenly distributed of sword roller axle, the groove depth of first mounting groove and the tank bottom of first mounting groove to the distance sum of the central line of sword roller axle 1 are greater than the radius of sword roller axle 1, and R is also less than D + L. Through radially being 2-7 angle settings with the knife roller axle 1 with first mounting groove, when the blade was meshed with the rubber roll, the power that the blade received just in time followed the blade direction, eliminated the torsional shear that the blade received, prevented the blade fracture to promote the life of blade, promote the continuity of shredding the working process.

Through simulation analysis and repeated test, consider economic nature and practicality, the rotor in this embodiment improves the optimization at blade quantity, thickness, sword roller axle diameter, first mounting groove inclination isoparametric, through optimizing above-mentioned each parameter at reasonable within range, has effectively prolonged the life of blade, guarantees to cut off the effect: specifically, the diameter of the cutter roller shaft 1 is 90-200mm, the thickness of the cutter body of the blade 3 is 0.5-1.2mm, and the width of the first mounting groove is 1.3-1.6 times of the thickness of the cutter body of the blade 3; if the first mounting groove is obliquely arranged, the radial included angle between the first mounting groove and the cutter roller shaft 1 is within the range of 2-7 degrees. The number of the first mounting grooves is determined according to the diameter of the cutter roller shaft 1 and the length of yarn to be cut, and the distance between the cutter points of two adjacent blades needs to be equal to the length of the yarn to be cut.

The above-mentioned embodiments, objects, technical solutions and advantages of the present application are described in further detail, it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present application, and are not intended to limit the scope of the present application, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present application should be included in the scope of the present application.

Claims (10)

1. A chopping machine knife roll, comprising:

the cutter roller shaft comprises a cutter roller shaft (1), wherein a first installation space and a second installation space are arranged on the outer peripheral surface of the cutter roller shaft (1) at intervals, and the first installation space and the second installation space are arranged in parallel and are arranged along the axial direction of the cutter roller shaft (1);

a blade (3), said blade (3) being movably received in said first mounting space; when the cutter roller shaft (1) rotates, the blade (3) can move along the radial direction of the cutter roller shaft (1) in the first installation space;

and the first end of the protruding part (4) is arranged in the second installation space, and the second end of the protruding part (4) extends out of the second installation space along the radial direction of the cutter roller shaft (1) to be in contact with the fiber filaments.

2. A chopping machine knife roll according to claim 1, characterized in that the end surface of the second end on the projection (4) is resilient.

3. A chopping machine knife roll according to claim 2, characterized in that the projections (4) are made of a polyurethane material.

4. The chopping machine knife roll according to any one of claims 1 to 3, characterized by further comprising glands (2), wherein the glands (2) are mounted at both ends of the knife roll shaft (1), and form the first and second mounting spaces with first and second mounting grooves provided on the outer circumferential surface of the knife roll shaft (1).

5. The chopping machine knife roll according to claim 4, characterized in that the section contour line of the second mounting groove along the radial direction of the knife roll shaft (1) is a major arc, and the outer peripheral surface of the first end of the bulge part (4) is matched with the inner wall surface of the second mounting groove.

6. A chopping machine knife roll according to claim 5, characterized in that the blade (3) is a trapezoidal blade comprising a knife body and a cutting edge, the length of the cutting edge is smaller than the length of the bottom of the knife body, and at least a part of the knife body is movably clamped in the first mounting space.

7. A chopping machine knife roll according to claim 6, characterized in that the height of the blade (3) is larger than the depth of the first mounting groove, the bottom length of the knife body is smaller than the length of the first mounting groove, and the thickness of the knife body is smaller than the width of the first mounting groove.

8. The chopping machine knife roll according to claim 7, characterized in that the gland (2) is provided with a first limiting part and a second limiting part, the first limiting part is used for limiting the moving distance of the knife body in the first mounting groove and preventing the knife body from falling out of the first mounting groove;

the second limiting part is used for fixing the limiting bulge (4) in the second mounting groove.

9. The chopping machine knife roll according to any one of claims 5-8, characterized in that the first mounting groove is uniformly arranged radially in the radial direction of the knife roll shaft (1), the first mounting groove has a groove bottom, a groove wall and a notch, and the sum of the groove depth of the first mounting groove and the distance from the groove bottom to the center line of the knife roll shaft (1) is equal to the radius of the knife roll shaft (1).

10. A chopping machine knife roll according to claim 4, characterized in that the glands (2) are mounted to both ends of the knife roll shaft (1) by means of screws.

Images