JP2000117703A - Cutting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce noises and vibration and cut various materials to be cut by the small required power. SOLUTION: The cutting device comprises a number of small cutting blades 1, flexible linear connecting members 2 for connecting respective cutting blades 1 endlessly at given intervals, a driving wheel 3 with a channel 41, into which bases 11 of the small cutting blades 1 are inserted, for providing the cutting blades 1 with rotation driving force, a follower wheel 5 with a channel 51, into which the bases 11 of the small cutting blades 1 are inserted, following the rotation of the small cutting blades 1 and a guide with a slide channel 71, in which the bases 11 of the small cutting blades 1 are slid, provided between the driving wheel 4 and the follower wheel 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of a cutting device for cutting an object to be cut by rotation of a cutting blade arranged endlessly.

[0002]

2. Description of the Related Art Conventionally, as a cutting device, for example, a device called a chain saw used for cutting weeds or the like has been known.

[0003] This conventional cutting device comprises an endless chain, a cutting blade attached to the chain at a fixed interval or integrally formed at a fixed interval with the chain, and meshing with the chain to apply a rotational driving force to the chain. A drive gear to be provided and a guide for slidingly guiding the rotating chain from the drive gear in a predetermined direction are provided.

[0004]

The above-described conventional cutting device has a problem in that noise and vibration are intense because the chain and the drive gear mesh with each other to apply a rotational driving force. Further, since it is essential to supply lubricating oil for maintaining smooth rotation of the chain, there is a problem that the target of the cut object is limited due to oil contamination and the like. Further, there is a problem that the power required is large because power of the cutting is easily applied to the guide to cause power loss.

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above problems, and an object of the present invention is to provide a cutting apparatus capable of cutting various objects with small required power and reducing noise and vibration. Make it an issue.

[0006]

Means for Solving the Problems In order to solve the above-mentioned problems, a cutting device according to the present invention employs the following means.

That is, according to the first aspect, a large number of cutting blades, a flexible linear connecting member for connecting the respective cutting blades endlessly at regular intervals, and a base of the cutting blade are different from each other. A driving wheel having a groove into which the cutting blade is inserted to apply a rotational driving force to the cutting blade; a driven wheel having a groove into which the base of the cutting blade is inserted and driven by the rotation of the cutting blade; A guide is provided between the driving wheel and the driven wheel with a slide groove in which the base of the blade slides.

[0008] In this means, noise and vibration are attenuated because the cutting blade is merely inserted into the groove of the driving wheel to apply the rotational driving force. Further, since the cutting blades are connected by a flexible linear connecting member, supply of lubricating oil becomes unnecessary, and oil contamination of the cut object does not occur. Further, since the driven wheel is provided via the drive wheel and the guide, the cutting stress applied to the guide is attenuated, and the power loss is reduced.

According to a second aspect of the present invention, in the cutting apparatus of the first aspect, the cutting edge portions of the adjacent small cutting blades are arranged so as to be inclined at a predetermined angle in opposite directions.

[0010] In this means, the cutting ability (sharpness) of the cutting blade is improved depending on the swing position.

According to a third aspect of the present invention, in the cutting apparatus according to the first or second aspect, the small cutting blade is inserted into a bracket for caulking with a window, and is caulked and fixed to an endless connecting member at regular intervals. And

In this means, the cutting blades are connected with a simple structure using the caulking means.

According to a fourth aspect of the present invention, a plurality of cutting blades, a connecting member between the cutting blades for connecting the cutting blades endlessly at regular intervals, and a base of the cutting blade are inserted. A driving wheel that has a groove to apply a rotational driving force to the cutting blade, a driven wheel that has a groove into which the base of the cutting blade is inserted and that is driven to rotate by the cutting blade, A guide is provided between the drive wheel and the driven wheel with a slide groove in which the base slides.

In this means, the cutting blades are connected by a discontinuous connecting member.

According to a fifth aspect of the present invention, in the cutting device of the fourth aspect, the cutting blade is formed of a laminate of a plurality of plates.

In this means, the cutting blade is formed in a structure avoiding bending or the like.

[0017]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 4 show an embodiment (1) of a cutting apparatus according to the present invention.

In this embodiment, the basic structure of a conventional chain saw in which the cutting blades 1 are arranged endlessly is employed.

In the cutting blade 1 according to this embodiment, as shown in detail in FIG. 2, a blade edge portion 13 extends obliquely from a flat base portion 11 through a curved connecting member receiver 12.

The cutting blade 1 is connected to a flexible linear connecting member 2 formed in an endless shape at a predetermined interval. Steel wire,
A nylon rope or the like is selected. Connecting material 2 of cutting blade 1
The crimping bracket 3 is used for the connection to the bracket. The caulking bracket 3 is formed of a flat plate having a window 31 opened. About this caulking bracket 3,
The cutting blade 1 is inserted into the window 31, and the connecting member receiver 1 of the cutting blade 1 is inserted.
2 is brought into contact with the connecting member 2 and both sides 32 are caulked in a U-shape. Such a connection of the cutting blade 1, the connecting member 2, and the caulking bracket 3 can provide a strong connecting force with a simple structure.

As shown in detail in FIGS. 2 and 3, the cutting blade 11 connected to the connecting member 2 has a blade edge portion 13 extending in the opposite direction between adjacent blades so that the cutting blade 11 is like a saw blade. It has a swing arrangement. This swing position contributes to the improvement of the cutting ability of the cutting blade 1 and also to the reduction of required power.

The cutting blades 1 arranged endlessly
As shown in FIG. 1, it is suspended over the driving wheels 4 and the driven wheels 5. The driving wheel 4 and the driven wheel 5 have a base 1
1 are provided in the grooves 41 and 51,
52 is supported by the guide 7 by the support bracket 6. The drive wheel 4 applies a rotational driving force to the cutting blade 1 by friction between the groove 41 and the base 11 of the cutting blade 1. Note that a flat type drive motor 8 is connected to the drive wheels 4. The driven wheel 5 is driven by the cutting blade 1 that is rotationally driven by friction between the groove 51 and the base 11 of the cutting blade 1.

The guide 7 is formed in the shape of a long plate, and has a slide groove 71 on the longitudinal side surface on which the base 11 of the cutting blade 1 slides, and penetrates the front and rear surfaces to contact the workpiece. A hole 72 for reducing friction is provided.

The connecting member 2 includes a driving wheel 4, a driven wheel 5,
The non-contact state with respect to the guide 7 is maintained.

According to this embodiment, the cutting blade 1 is rotationally driven by friction with the driving wheel 4 driven by the driving motor 8, thereby avoiding the conventional meshing of the chain and the driving gear. Therefore, noise and vibration are attenuated.

In addition, a conventional linear connecting member in which the cutting blade 1 is kept out of contact with the driving wheel 4, the driven wheel 5, and the guide 7 while the conventional meshing of the chain and the driving gear can be avoided. The connection by 2 eliminates the need to supply lubricating oil to the cutting blade 1, the connecting member 2, the driving wheel 4, the driven wheel 5, and the guide 7. Therefore, there is no need to worry about oil contamination and the like, and it can be used for cutting frozen foods and fruit trees in addition to weeds.

Further, the cutting blade 1 which is arranged endlessly
Is smoothly rotated between the driving wheel 4 and the driven wheel 5, so that the cutting stress is not applied to the guide 7 more than necessary. Therefore, the power loss is reduced and the required power is small. In addition, for the smooth rotation of the cutting blade 1, the driving wheels 4,
The flexibility of the connecting member 2 in the endless direction change near the driven wheel 5 is also useful.

FIGS. 5 and 6 show an embodiment (2) of the cutting apparatus according to the present invention.

In this embodiment, the cutting blade 1 is constituted by a laminate of three plates 14, 15, and 16.

One plate 14 is provided with a connecting member receiver 12 having a shape in which a round hole is continued and a saw-toothed cutting edge portion 13, and two large and small screw holes 14 into which screws 17 are inserted.
a and 14b are perforated. Another one plate 15
Is provided with a connecting member receiver 12 having a shape in which a corrugated base 11 and a round hole are continued, and a screw hole 15a through which a screw 17 is inserted.
15b is perforated. The remaining one plate 16
A screw hole 16a into which the screw 17 is inserted is formed.

The plates 14, 15, 16 are provided with the other plates 14, 16 abutting on both sides of the plate 15 on which the base 11 is provided, and one of the screw holes 14a, 15a,
At 16a, the three plates 14, 15, 16 are fixed,
Two plates 14, 1 are inserted into the other screw holes 14b, 15b.
5 is fixed.

The cutting blade 1 made of a laminate of three plates 14, 15, 16 is connected by a connecting member 2 made of a piano wire, a belt or the like. Although the connecting member 2 according to this embodiment connects the cutting blades 1 endlessly, the connecting member 2 is in a discontinuous state in which the cutting members 1 exist between the respective cutting blades 1 in a short shape. The connecting member 2 is sandwiched and fixed between the connecting member receivers 12 of the two plates 14 and 15. The lamination of adjacent cutting blades 1 is reversed to balance the cutting stress (see FIG. 5).

According to this embodiment, since the cutting blade 1 can be formed and connected by the connecting member 2 without the troublesome bending work as in the above-mentioned embodiment (1), manufacturing Cost can be reduced.

Further, since the connecting member 2 is in a discontinuous state, if the cutting blade 1 and the connecting member 2 are partially damaged, it can be easily replaced and repaired.

Specific applications of these embodiments are not particularly limited, and can be implemented in any of a stationary type and a portable type.

As described above, in addition to the illustrated embodiment, the shape of the cutting blade 1 can be variously changed.

[0038]

As described above, according to the cutting device of the present invention, only the cutting blade is inserted into the groove of the driving wheel to apply the rotational driving force. Since meshing is avoided, noise and vibration are attenuated.

Further, since the cutting blades are connected by a flexible linear connecting member and supply of lubricating oil is not required, oil contamination of the object to be cut does not occur, and various objects to be cut can be obtained. There is an effect that can be set as a cutting target.

Further, a driven wheel is provided via a driving wheel and a guide, and a cutting stress applied to the guide is attenuated.
There is an effect that power loss is reduced and required power is reduced.

Furthermore, the second aspect of the present invention has the effect of reducing the required power since the cutting ability (sharpness) of the small cutting blade is improved by the arrangement of the swings.

Furthermore, the third aspect has the effect that the cutting blade and the connecting member can be firmly connected with a simple structure.

Further, since the cutting blade is constituted as a laminated body of a plurality of plates, the cutting blade can be formed and connected by a connecting material without complicated bending. This has the effect of reducing manufacturing costs.

Further, since the connecting member is in a discontinuous state, if the cutting blade and the connecting member are partially damaged, it can be easily replaced and repaired.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment (1) of a cutting apparatus according to the present invention.

FIG. 2 is an enlarged cross-sectional view of a main part of FIG.

FIG. 3 is an enlarged vertical sectional view of a main part of FIG. 1;

FIG. 4 is an enlarged longitudinal sectional view of another main part of FIG. 1;

FIG. 5 is an enlarged front view of a main part showing an embodiment (2) of a cutting device according to the present invention.

FIG. 6 is an exploded sectional view of a main part of FIG.

[Explanation of symbols]

 Reference Signs List 1 cutting blade 11 base 13 cutting edge 14, 15, 16 plate 2 connecting material 3 bracket for caulking 4 drive wheel 41 groove 5 driven wheel 51 groove 7 guide 71 slide groove

Claims (5)

[Claims] A plurality of cutting blades, a flexible linear connecting member for connecting the respective cutting blades endlessly at regular intervals, and a groove into which a base of the cutting blade is inserted. A driving wheel that applies a rotational driving force to the cutting blade, a driven wheel that has a groove into which the base of the cutting blade is inserted, and is driven by the rotation of the cutting blade, and a base of the cutting blade slides. And a guide provided between a driving wheel and a driven wheel with a sliding groove. 2. The cutting device according to claim 1, wherein the cutting edge portions of the adjacent cutting blades are arranged in a staggered manner inclined at a fixed angle in opposite directions. 3. The cutting device according to claim 1, wherein
A cutting device, wherein a cutting blade is inserted through a caulking bracket with a window and is caulked and fixed to an endless connecting member at regular intervals. 4. A plurality of cutting blades, a connecting member between the cutting blades for connecting the cutting blades endlessly at regular intervals, and a groove into which a base of the cutting blade is inserted. A driving wheel that applies a rotational driving force to the cutting blade, a driven wheel that has a groove into which the base of the cutting blade is inserted and is driven by the rotation of the cutting blade, and a slide on which the base of the cutting blade slides A cutting device having a groove and a guide provided between a driving wheel and a driven wheel. 5. The cutting device according to claim 4, wherein the cutting blade comprises a laminate of a plurality of plates.