CN212495723U

CN212495723U - Saw blade assembly

Info

Publication number: CN212495723U
Application number: CN202020454210.9U
Authority: CN
Inventors: 毋宏兵; 闵军辉; 周中亚
Original assignee: Positec Power Tools Suzhou Co Ltd
Current assignee: Positec Power Tools Suzhou Co Ltd
Priority date: 2020-04-01
Filing date: 2020-04-01
Publication date: 2021-02-09
Anticipated expiration: 2030-04-01

Abstract

The utility model discloses a saw bit subassembly, this saw bit subassembly includes: at least two saw blades, a connecting mechanism; the saw blade includes: the cutting blade comprises a blade body, wherein a cutting edge is arranged on the periphery of the blade body, a mounting hole is formed in the center of the blade body, and the mounting holes of two adjacent saw blades are aligned along the thickness direction of the saw blades; the connecting mechanism is fixed between two adjacent saw blades and used for connecting the two adjacent saw blades and enabling the two adjacent saw blades to be spaced at a preset distance along the thickness direction of the saw blades. The saw blade assembly has the advantages of high assembly and disassembly efficiency, low cost, light weight and reasonable structure, and can ensure primary grooving, thereby better meeting the comprehensive requirements of users.

Description

Saw blade assembly

Technical Field

The utility model relates to an electric tool technical field, in particular to saw bit subassembly.

Background

The grooving machine cuts a surface to be cut quickly through a wheel disc saw to form a groove with uniform width, and can be applied to asphalt, cement pavement repair, water discharge pipes, gas pipes, wire pipes, optical cable pipes and the like. For artifical fluting, the fluting machine fluting efficiency is higher, fluting is effectual, labour saving and time saving to be prepared for liking by the user.

However, in order to better meet the use requirements of users, the current slotting machine also has some problems to be improved.

As shown in fig. 1 and 2, a typical grooving machine 100 generally requires a plurality of single cutting blades (or referred to as saw blades 1) to be mounted on a main shaft 3 in order to form a groove with a predetermined groove width. During specific assembly, a circular gasket 4 is firstly placed into the spindle 3, then the interval gasket 4 and the saw blade 1 are sequentially placed into the spindle, then a fixing screw and a nut are placed into the spindle, and finally the screw is fixed by a tool. In general, one of the outstanding problems of the conventional method of mounting a plurality of saw blades 1 one by one on a main shaft 3 is low mounting and dismounting efficiency.

In view of the above, there is a need for a new saw blade assembly that can ensure high assembly and disassembly efficiency, thereby better satisfying the comprehensive needs of users.

SUMMERY OF THE UTILITY MODEL

In view of the deficiencies of the prior art, it is an object of the present application to provide a saw blade assembly that ensures high assembly and disassembly efficiency, and in addition, ensures low cost, light weight, and reasonable structure, and ensures one-time grooving, thereby preferably satisfying the comprehensive needs of the user.

The above object of the present invention can be achieved by the following technical solutions:

a saw blade assembly comprising:

at least two saw blades, a connecting mechanism;

the saw blade includes: the cutting blade comprises a blade body, wherein a cutting edge is arranged on the periphery of the blade body, a mounting hole is formed in the center of the blade body, and the mounting holes of two adjacent saw blades are aligned along the thickness direction of the saw blades;

the connecting mechanism is fixed between two adjacent saw blades and used for connecting the two adjacent saw blades and enabling the two adjacent saw blades to be spaced at a preset distance along the thickness direction of the saw blades.

In a preferred embodiment, the insert body has first and second opposed surfaces, and the cutting edge has a cutting portion at least partially raised from the first and/or second surfaces.

In a preferred embodiment, the predetermined distance between two adjacent saw blades along the thickness direction of the saw blade is the distance between the cutting edges of two adjacent saw blades, and the predetermined distance is less than 3 mm.

In a preferred embodiment, the cutting portion has a convex profile and a concave profile which are periodically and continuously distributed with respect to the insert body.

In a preferred embodiment, the cutting portions are evenly spaced with respect to the insert body, and the cutting portions are inclined at a predetermined angle with respect to the insert body.

In a preferred embodiment, two adjacent saw blades are connected by a full circle fixing mode, and the connecting mechanism comprises: an annular spacer block having a predetermined thickness.

In a preferred embodiment, the material of the pad comprises any one of the following: steel, aluminum alloy, copper alloy, zinc alloy and other alloy materials.

In a preferred embodiment, two adjacent saw blades are connected by a multi-point fixing method, and the connecting mechanism comprises: and the connecting units are uniformly arranged at intervals in the circumferential direction around the central hole.

In a preferred embodiment, the connecting unit includes rivets, and when the number of the saw blades is more than three, the rivets between two adjacent blade bodies are arranged in a staggered manner.

In a preferred embodiment, the cutting edge is formed on the insert body by means of stamping and sintering.

Advantageous effects

The saw blade assembly that provides in this application embodiment connects a plurality of saw bits for integral saw blade assembly through coupling mechanism, in the use, can once accomplish the installation, has improved greatly and has installed and removed efficiency. In addition, the saw bit among the saw bit subassembly has the cutting part of protruding in the blade body, and relative to the saw bit of blade body that the cutting edge does not protrude among the prior art, can make to have less distance between the cutting edge, when guaranteeing once grooving, can increase the distance between the saw bit blade body to effectively reduce the number of saw bit, reduced the cost and the weight of saw bit subassembly, can satisfy user's comprehensive demand better.

Specific embodiments of the present application are disclosed in detail with reference to the following description and drawings, indicating the manner in which the principles of the application may be employed. It should be understood that the embodiments of the present application are not so limited in scope.

Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments, in combination with or instead of the features of the other embodiments.

It should be emphasized that the term "comprises/comprising" when used herein, is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps or components.

Drawings

In order to more clearly illustrate the embodiments of the present application 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 of the present application, and other drawings can be obtained by those skilled in the art without inventive labor.

FIG. 1 is a schematic structural view of a prior art grooving machine;

FIG. 2 is a cross-sectional view of slot opening machine A-A of FIG. 1;

FIG. 3 is a schematic view of a saw blade assembly according to one embodiment of the present application;

FIG. 4 is a schematic view of the linkage mechanism of the blade assembly provided in FIG. 3;

FIG. 5 is a cross-sectional view of a saw blade of the saw blade assembly of FIG. 3;

FIG. 6 is a schematic view of a saw blade assembly according to another embodiment of the present application;

FIG. 7 is a front view of another saw blade in accordance with an embodiment of the present application;

FIG. 8 is a top view of another saw blade in accordance with an embodiment of the present application.

Description of reference numerals:

100. a grooving machine;

101. a saw blade assembly;

1. a saw blade; 10. a blade body; 11. a cutting edge; 110. a cutting portion; 111. a first inclined portion; 112. a second inclined portion; 113. molding a convex surface; 114. molding a concave surface; 12. mounting holes; 13. a first surface; 14. a second surface;

2. a connecting mechanism; 21. cushion blocks; 22. riveting; 221. a first layer of rivets; 222. a second layer of rivets;

3. a main shaft;

4. and (7) a gasket.

Detailed Description

The technical solution of the present invention will be described in detail with reference to the accompanying drawings and specific embodiments, it should be understood that these embodiments are only used for illustrating the present invention and are not used for limiting the scope of the present invention, and after reading the present invention, the modifications of the present invention in various equivalent forms by those skilled in the art will fall within the scope defined by the claims attached to the present application.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The application specification provides a saw bit subassembly, can guarantee to have higher efficiency of installing and removing, lower cost, lighter weight, and rational in infrastructure, can guarantee once grooving to satisfy user's comprehensive demand better.

Referring to fig. 3 and 5, in an embodiment of the present disclosure, a saw blade assembly 101 is provided, where the saw blade assembly 101 may include: at least two saw blades 1, a connecting mechanism 2.

Wherein the saw blade 1 may include: the cutting blade comprises a blade body 10, wherein a cutting edge 11 is arranged on the periphery of the blade body 10, a mounting hole 12 is arranged in the center of the blade body 10, and the mounting holes 12 of two adjacent saw blades 1 are aligned along the thickness direction of the saw blades 1.

The connecting mechanism 2 is fixed between two adjacent saw blades 1 and used for connecting the two adjacent saw blades 1 and enabling the two adjacent saw blades 1 to be spaced by a preset distance H along the thickness direction of the saw blades 1.

In the present embodiment, the plurality of saw blades 1 are connected to the integrated saw blade assembly 101 by the connecting mechanism 2, and the saw blade assembly can be mounted at one time in use, so that the mounting and dismounting efficiency is greatly improved.

For the slotter 100 with the specific application of the saw blade assembly 101, if the gap between the saw blades 1 is increased to reduce the weight of the slotter 100, the residual in the slot cannot be formed into the slot at one time; if the clearance of the saw blade 1 is not increased, the number of the saw blades 1 is increased, the cost of the whole machine is high, the weight is large, and the use experience of a user is not guaranteed. And in particular the hand-held slotter 100, it is desirable to minimize the overall weight of the machine for the first use required by the user.

In order to reduce the number of the saw blades 1 by expanding the distance between two adjacent saw blades 1 as much as possible on the premise of realizing primary grooving, the cutting edge 11 of the saw blade 1 can be further improved.

In one embodiment, the insert body 10 has opposing first and

second surfaces

13, 14, and the cutting edge 11 has a cutting portion 110 at least partially raised from the first and/or

second surfaces

13, 14.

In the present embodiment, after the cutting edge 11 has the cutting portion 110 protruding from the blade body 10, the predetermined distance H between two adjacent saw blades 1 in the thickness direction of the saw blade 1 is the distance between the cutting edges 11 of two adjacent saw blades 1. The distance between the cutting edges 11 of two adjacent saw blades 1 is smaller than the distance between the blade bodies 10 of the saw blades 1. Compared with the saw blade 1 of the prior art, the cutting edge 11 does not protrude out of the blade body 10, a small distance is formed between the cutting edges 11, the distance between the blade bodies 10 of the saw blade 1 can be increased while primary grooving is guaranteed, the number of the saw blades 1 is effectively reduced, and the cost and the weight of the saw blade assembly 101 are reduced.

Specifically, in order to ensure that the blade assembly 101 can be slotted at a time when in use, in the embodiment of the present application, the distance between the cutting edges 11 of two adjacent blades 1 can be controlled within 3mm (millimeters).

In the present embodiment, the cutting edge 11 may be formed on the insert body 10 by means of punching and sintering. The cutting portion 110 of the cutting edge 11 may have various shapes.

As shown in fig. 5, there is provided a saw blade 1 according to an embodiment of the present application. The cutting portions 110 are uniformly spaced with respect to the insert body 10, and the cutting portions 110 are inclined at a predetermined angle with respect to the insert body 10.

In the present embodiment, the cutting portions 110 may be uniformly spaced along the circumferential direction of the saw blade 1 and inclined at a predetermined angle with respect to the blade body 10 such that the distance of the cutting portions 110 in the thickness direction of the saw blade 1 is greater than the thickness of the blade body 10. Specifically, the cutting part 110 may include a first inclined part 111 inclined toward the first surface 13 side of the insert body 10, and a second inclined part 112 inclined toward the second surface 14 side of the insert body 10. The first and second

inclined portions

111 and 112 may be alternately arranged to form a closed circumference around the blade body 10.

The cutting portion 110 of the single blade 1 of the blade assembly 101 may also be inclined toward the same surface of the blade body 10. The predetermined angle of inclination of the cutting portion 110 can be set according to parameters such as the actual size of the saw blade 1, and the application is not limited in detail.

For example, when the cutting portion 110 of one blade 1 is inclined toward the first surface 13 of the blade body 10 and the cutting portion 110 of the other blade 1 is inclined toward the second surface 14 of the blade body 10, the cutting portions 110 of the two blades 1 can be opposite or opposite to each other, so as to ensure good dynamic balance during use.

In addition, the cutting portion 110 of the saw blade 1 may also be fan-shaped, and a plurality of fan-shaped cutting portions 110 form a closed circumference around the blade body 10.

As shown in fig. 6, 7 and 8, a saw blade 1 according to another embodiment of the present invention is provided. The cutting part 110 may be a convex surface molding 113 and a concave surface molding 114 which are periodically and continuously distributed with respect to the insert body 10.

In the present embodiment, the cutting portion 110 may be a convex surface profile 113 and a concave surface profile 114 periodically and continuously distributed along the circumferential direction of the insert body 10. When the cutting portion 110 is in the form of periodic convex formations 113 and concave formations 114, the overall strength is higher relative to a discontinuous form.

Specifically, the blade 1 has a convex contour 113 and a concave contour 114 on both the first surface 13 and the second surface 14 of the blade body 10. In addition, the cutting portion 110 of the single blade 1 of the blade assembly 101 may be protruded toward different surfaces of the blade body 10. For example, when the cutting portion 110 of one blade 1 protrudes toward the first surface 13 of the blade body 10 and the cutting portion 110 of the other blade 1 protrudes toward the second surface 14 of the blade body 10, the cutting portions 110 of the two blades 1 can be opposite or opposite to each other, so as to ensure good dynamic balance during use.

As shown in fig. 6, in one embodiment, two adjacent saw blades 1 can be connected by a full circle fixation. When two adjacent saw blades 1 are connected in a full circle fixing mode, the connecting mechanism 2 comprises: an annular spacer 21 having a predetermined thickness. The thickness of the ring washer is the distance between the blade bodies 10 of two adjacent saw blades 1. The annular pad 21 may have first and second opposite end faces in a thickness direction thereof. Wherein the first end surface and the second end surface can be fixed with the saw blade 1 in a spot welding mode. The whole-circle fixing mode can also comprise that the saw blade 1 and the cushion block 21 are bonded by glue and the like.

Wherein, the material of the cushion block 21 comprises any one of the following materials: steel, aluminum alloy, copper alloy, zinc alloy and other alloy materials. In order to make the blade assembly 101 have a light weight, the material of the pad 21 may be a material with a low density, such as an aluminum alloy.

As shown in fig. 3, in another embodiment, two adjacent saw blades 1 are connected by multi-point fixing, and the connecting mechanism 2 includes: and the connecting units are uniformly arranged at intervals in the circumferential direction around the central hole. The number of the connecting units may be plural, for example, at least three. As shown in fig. 4, the number of the connecting units may be 4, and the 4 connecting units are uniformly spaced around the central hole at intervals of 90 ° in the circumferential direction, so as to ensure that the saw blade assembly 101 has a smaller moment of inertia when being applied to the slotter 100, and maintain a better dynamic balance.

In particular, the connection unit may be in the form of a rivet 22, but of course also in the form of a screw, nut, etc.

As shown in fig. 4, the connection unit may be a rivet 22. When the saw blade 1 is more than three, the rivets 22 between two adjacent blade bodies 10 are arranged in a staggered manner, so that the saw blade assembly 101 has smaller moment of inertia when being applied to the grooving machine 100, and better dynamic balance can be maintained.

For example, the blade assembly 101 may include a first blade, a second blade, and a third blade. Wherein a first layer of rivets 221 is arranged between the first saw blade and the second saw blade, a second layer of rivets 222 is arranged between the second saw blade and the third saw blade, and the rivets 22 in the first layer of rivets 221 are positioned between two adjacent rivets 22 in the second layer of rivets 222.

It should be noted that, in the description of the present application, the terms "first", "second", and the like are used for descriptive purposes only and for distinguishing similar objects, and no precedence between the two is intended or should be construed to indicate or imply relative importance. In addition, in the description of the present application, "a plurality" means two or more unless otherwise specified.

The above embodiments in the present specification are all described in a progressive manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment is described with emphasis on being different from other embodiments.

The above description is only a few embodiments of the present invention, and although the embodiments of the present invention are disclosed as above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A saw blade assembly, comprising: at least two saw blades, a connecting mechanism;

2. A saw blade assembly as defined in claim 1, wherein the blade body has first and second opposed surfaces, the cutting edge having a cutting portion at least partially raised from the first and/or second surfaces.

3. The saw blade assembly as claimed in claim 1, wherein the predetermined distance between adjacent two of said saw blades along the thickness direction of the saw blade is the distance between the cutting edges of adjacent two of said saw blades, said predetermined distance being less than 3 mm.

4. The blade assembly as defined in claim 2, wherein said cutting portion includes a convex profile, a concave profile periodically and continuously distributed with respect to said blade body.

5. A saw blade assembly as defined in claim 2, wherein said cutting portions are evenly spaced relative to said blade body and are inclined at a predetermined angle relative to said blade body.

6. The saw blade assembly as claimed in claim 1, wherein the adjacent two saw blades are connected by a full circle fixing manner, and the connecting mechanism comprises: an annular spacer block having a predetermined thickness.

7. The blade assembly of claim 6, wherein the material of the spacer block includes any one of: steel, aluminum alloy, copper alloy, zinc alloy and other alloy materials.

8. The blade assembly of claim 1, wherein adjacent blades are connected by a multi-point fastening, and the connecting mechanism comprises: and the connecting units are uniformly arranged at intervals in the circumferential direction around the central hole.

9. The blade assembly of claim 8, wherein the connecting unit includes rivets, and when the number of the blades is more than three, the rivets between two adjacent blade bodies are arranged in a staggered manner.

10. A saw blade assembly as defined in claim 1, wherein said cutting edge is formed on said blade body by stamping and sintering.