JP2021097653A - Twig trimming machine - Google Patents

Abstract

To provide a twig trimming machine capable of efficiently trimming a hard twig and a thick branch, since, when cutting a thick branch or a hard branch by a trimming machine, vertical trimming blades may bite a branch, or tips of the trimming blades may bend and the vertical trimming blades may get entangled.SOLUTION: In crank motion which is driven to rotate by a drive source of a main body power part, in a configuration of a trimming machine, a branch reception material 2 is fixed to a case 1B, and for reciprocation of a saw blade 1 alone, a width of reciprocation is increased. On a branch reception support material 2, at a proper interval, the branch reception material 2 having a cutting blade 3c is provided. The saw blade 1 has on both ends in a width direction, a plurality of saw blades 1a which is hardly broken and bent, and is formed into proper size, the saw blades reciprocating. In the invention, an orientation of a cutting blade 1a on one side of the saw blade can be changed in use for avoiding cutting of a hard or a thick branch by the saw blade 1 and the branch reception material 2.SELECTED DRAWING: Figure 2

Description

The present invention relates to a twig pruning machine configured to perform pruning, pruning, etc. by a reciprocating saw cutting blade and a branch receiving blade that receives a branch.

Hedge trimmers and the like that cut objects such as hedgerows and garden trees are known, and an example of the cutting machine is described in patent documents and the like. In the pruning machine (hedge trimmer), the upper and lower crank cams are operated by the rotation of the power source, engine, motor, etc. that drive the eccentric discs that make up the crank cams provided in the mowing machine body, and are connected to the upper and lower eccentric discs. The object is trimmed by alternately moving a pair of braid assemblies provided along the longitudinal direction.

JP-A-2019-193598 Public Relations

If you try to cut a thick or hard branch with a pruning machine, the upper and lower cutting blades may bite into the branch, the cutting edge may be bent and the upper and lower cutting blades may be entangled, or the cutting edge may be chipped. , Thick branches and hard branches must be cut in advance with pruning shears, saws, etc., which causes a problem that work efficiency is lowered.

An object of the present invention is to provide a pruning machine capable of avoiding a decrease in efficiency of pruning work.

The twig pruning machine of the present invention operates on the left and right branch receiving members provided at various locations in the longitudinal direction connected to the main body (power rotating portion), the long double-edged saw connected to the rotating material in the main body, and the branch receiving member. The long double-edged saw that can be set and set cuts the twigs sandwiched between the branch receiving parts in various places, and the twigs are cut by the forward and backward movement of the long saw blade. A blade type with the same shape as the saw blade, the same material as the saw blade, and a material that is hard to wear and break is desired. Considering the blade type, size, number of blades, etc., each branch receiving part Spacing (thick branches at the base, spacing for branches of about 30 mm), setting of reciprocating movement of the saw blade, length of the branch receiving material (difference from the cutting edge of the saw blade) If the length is short, the saw Branches are repelled by the blade, if it is too long, the resistance applied to the machine will increase. Ideally, the branches will not be repelled. Since it is operated only by the double-edged saw, the reciprocating movement is wide unlike the operation of the upper and lower members using the crank cam, so it is set to increase the reciprocating movement by using a single crank, and this crank rotation movement is dead. At the point-down dead point, the reciprocating movement is momentarily slowed from pulling to pushing to pulling, which has the effect of softening the vibration of the main body.

In the twig cutting machine of the present invention, the branch receiving portion of each branch receiving member fixed to the main body has a shape at which the contact portion with the saw blade has the same shape as the cutting edge of the saw blade, and the received twig is used as the branch receiving material. It is configured to cut with a long reciprocating saw blade that is set so that it can be operated, and its feature is that the saw blade has a shape that makes it easy to cut twigs in both reciprocating directions.

In addition, the saw blade is a single-edged blade (usually a blade type that cuts the left and right sides of the saw plate), and by contact (combination) with the branch receiving material, the cutting edge surfaces should be combined with each other in general young branch pruning. It is easy to cut branches, but aged twigs are hard and difficult to cut, and the same is true for thick branches. With this combination, the blades bend and break, and general pruning machines are also used in the same way. It is a difficult point (because the cutting edge part is long), and as a means to solve this difficult point, the blade direction is the same as the branch receiving part (cutting blade part), the shape of the blade is the same, and the saw is used depending on the usage method. By changing the direction of the blades on both sides of the saw blade, one side of the branch receiving side can be prevented from getting entangled with the branch receiving part by the force acting outward from the branch receiving member due to the resistance of the branch that the blade cuts. By making the shape of the cutting edge on the opposite side, it is possible to cut hard branches, branches that are easy to cut, etc., and it is also possible to replace the saw blade with the same shape on both sides depending on the usage condition.

It is a schematic side view which shows the twig pruning machine of this invention. The plan view of the braid assembly used for the twig pruning machine of FIG. It is a side view of the braid assembly used for the twig cutting machine of FIG. The side view of the partial enlargement of the braid assembly of FIG. A partially enlarged view of FIG. The cut plan view of the saw blade used in the present invention, the cut enlarged view 1a of the cutting edge, the branch receiving blade 3 for the branch, and the enlarged use cross-sectional view of the saw blade 1. A cut plan view showing alternating blade shapes on the left and right sides of the saw blade used in the present invention, and an enlarged cross-sectional view showing a usage example of the cutting edge and a direction of force points with respect to a branch. The motion schematic diagram of the connecting rod which changes the rotational motion of the power part used in this invention into a reciprocating motion. Schematic diagram of the connecting slide part for operating the saw blade with a connecting rod.

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 to 9. The cross-sectional side view shown in FIG. 1 is a schematic view showing a connecting rod that changes a rotary motion into a reciprocating motion, and there is no display of a motor (engine, electric tool). Reference numeral 12 shown in FIG. 2 is a slide material to which a saw blade is attached, which reciprocates, and the reciprocating movement activates the double-edged saw blade 1, and the branch receiving member 3 provided with the cutting edge 3c on the branch receiving support member 2. The branches received by the saw are cut. The saw blade slide guide 10 is provided with a ring on the slide slide set, and 5 is a handle portion at the original position of the saw blade.

The figure shown in FIG. 3 is a cross-sectional view of the branch support member 2, the saw blade 1, and the like, and the branch support support member 2 is supported by the branch support support member 11 provided on the main body side 1A, and the branch support member 2 is supported. , The branch receiving material 3, the saw blade receiving material 4, and the saw blade 1 are set by the respective parts 7, 8 and 10, and is a cut enlarged view of the branch receiving material 3, 3c.

FIG. 4 is a partially enlarged view of the side sectional view shown in FIG. 3, is an enlarged view of a contact portion between the branch receiving members 3, 3c and the cutting edge 1a of the saw blade 1, and FIG. 5 is a plan view shown in FIG. FIG. 6 is a partially enlarged view of the above, in which the branch is pressed by the branch receiving materials 3, 3c, and the saw blade 1 moves left and right to cut the branch. FIG. 6 is a plan enlargement showing the polishing angle of the cutting edge of the saw blade 1. It is a cut drawing, and is the figure which showed the polishing angle of 1a of a cutting edge. Further, refer to the branch cut diagram showing the usage example of FIG. 6, and the force direction as shown by the arrow shown in the figure works, and in a hard branch, the blade may bend due to the engagement of the cutting edge.
In FIG. 7, the polishing angles of the blades on the left and right ends of the saw blade are changed on the front and back. Refer to the branch cutting diagram as an example of use. In the case of hard and thick branch cutting, the force in the direction of the arrow shown in FIG. 7 is applied. Worker branch cutting It is configured so that the purpose of use can be changed. 8 and 9 are schematic views showing an operation diagram inside the main body.

1 saw blade 1a
2 Branch receiving support material 3 Branch receiving material, cutting edge 3c
4 Saw blade receiving material 5 Saw blade handle 6 Saw blade slide guide slot 7 Sliding ring 8 Pruning part set bolt 9 Pruning part set hole 10 Pruning part slide set nut 11 Saw blade support auxiliary material 12 Saw blade Handle receiving material 13 Crank material 14 Slide ring 15 Power rotation shaft 16 Crank rotation shaft 17 Slide part crankshaft 18 Power part shaft 19 Crank part, turntable 12A
20 Slide part 21 Saw blade handle part Mounting part 1A Power part, case

Claims (1)

The saw blade handle set on the slide member connected to the slide member is reciprocated by the movement of the crank cam by the crank cam that is rotationally driven by the drive source in the main body power unit, the saw blade 1 is operated, and the saw blade 1 is connected to the main body 1A. A method of cutting a branch with a branch receiving material, in which both sides of the cutting edge portion 1a of the saw blade are formed with a single blade, and the cutting edge portion of the branch receiving rubs against each other to cut a branch, a single-edged saw. By turning the blade 1 inside out and turning the cutting edge part to the outside, the cutting edge part 1a of the saw blade faces outward with respect to the cutting edge part of the branch receiver, and the cutting edge part does not get entangled. A twig pruning machine characterized in that by making the cutting edge portion 1a opposite to the outside and inside, it is possible to properly use branches that are easy to cut and hard branches that are difficult to cut, and to improve work efficiency.

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