JP4677240B2 - Trimming machine - Google Patents

Description

  The present invention relates to a trimming machine used for pruning plants and the like.

  2. Description of the Related Art Conventionally, a trimming machine that reciprocates a movable blade including a plurality of cutting blades arranged in the longitudinal direction using a motor and a cam as a driving source has been widespread. The trimming machine includes a so-called single-blade drive type consisting of a combination of a fixed blade and a movable blade, and a double-blade drive type that causes the movable blades to linearly reciprocate in opposite directions.

  Of the above-mentioned ones, the one-blade drive type is light in weight and has few moving parts, so that the drive output can be small, but there is a drawback that strong vibration is generated in the whole trimming machine due to the action of the penetrating force accompanying the trimming operation.

  Further, the double-blade-driven trimming machine has an advantage that, for example, each blade can be reciprocated using an anti-phase cam to cancel the penetrating force and greatly reduce vibration compared to the single-blade drive. is there. On the other hand, even with the double-edged drive, there is a drawback that the cutting surface of the object to be cut becomes rough if the cutting blades arranged on the blades simply reciprocate directly.

As an invention for eliminating the inconvenience due to this push-cutting, it is a trimming machine having a configuration for preventing vibration during use, and a first cutting blade, a first drive mechanism for driving the first cutting blade, A trimming machine comprising: a second cutting blade capable of cutting in cooperation with the first cutting blade; and a second drive mechanism for driving the second cutting blade, wherein the first cutting blade and the first cutting blade A trimming machine is known in which at least one of the second cutting blades swings (see, for example, Patent Document 1).
JP 2001-57815 A

  However, the invention according to Patent Document 1 is basically a double-edged drive and is configured to operate all the two rows of cutting blades from the proximal end side to the distal end side. There was a disadvantage that required the property.

  In addition, the use of a high-output motor tends to place a burden on each part of the movable blade, and the durability of the trimming machine itself is not sufficient.

  On the other hand, in Patent Document 1, both the first cutting blade and the second cutting blade swing, and the distance between the fulcrum and the power point of the first cutting blade is between the fulcrum and the power point of the second cutting blade. When the configuration is different from the above distance, the width of the entire blade becomes very wide, and during the pruning operation, the tip end side of the blade is easily caught by an extended branch or the like, which makes the handling inconvenient.

  The present invention has been made in view of the above circumstances, and on the premise that it is possible to eliminate the inconvenience caused only by push-off as in the above-mentioned conventional method and to reduce vibration, it is further excellent in durability and handling. It is an object to provide a very good trimming machine that is easy.

  A fixed blade formed by arranging a plurality of fixed cutting blades, a plurality of movable cutting blades pivotally mounted on the fixed blade so as to be swingable between the fixed cutting blades, and one end mounted on the movable shaft, and the movable shaft The movable blade has a first movable blade and a second movable blade, and the plurality of movable blades in the fixed blade are a first movable shaft of the first movable blade and A plurality of movable cutting blades swing in the opposite directions with the relative linear reciprocation between the first movable shaft and the second movable shaft. A mowing machine characterized in that it moves and cooperates with a fixed cutting blade is used as a means for solving the problem.

According to the present invention , a plurality of movable blades having a fixed blade formed by arranging a plurality of fixed cutting blades and pivotally mounted on the fixed blade so as to be swingable between the fixed cutting blades and having one end mounted on the movable shaft. In a trimming machine having a cutting blade and a movable blade having the movable shaft, the plurality of movable cutting blades in the movable blade is composed of approximately the same number of first movable cutting blades and second movable cutting blades. The shaft is composed of a first movable shaft and a second movable shaft. The shaft connecting portion of the first movable cutting blade is attached to the first movable shaft, and the shaft connecting portion of the second movable cutting blade is connected to the second movable shaft. The first movable shaft and the second movable shaft can be linearly reciprocated relative to each other, and the first movable cutting blade and the second movable shaft can be reciprocated linearly. The second movable cutting blade swings in the opposite direction, Since the first movable cutting blade and the fixed cutting blade work together, and the second movable cutting blade and the fixed blade cooperate, the first movable cutting blade and the second movable cutting that swing relatively in opposite directions A single movable blade is arranged in one row to reduce vibration, and the first movable shaft and the second movable shaft are sufficient to move half each of the movable cutting blades arranged in the longitudinal direction. Therefore, the load such as the frictional resistance between the movable cutting blade and the movable shaft is reduced, and the load on the motor and the movable blade can be reduced, so that it can be very light and excellent in durability.

  Furthermore, with the above-described configuration, the movable blade is configured such that the first movable cutting blade and the second movable cutting blade are all arranged in a row, so that the width of the entire blade including the fixed blade and the movable blade can be reduced. During the pruning operation, the tip end side of the blade is not easily caught on the extended branch, and the operability can be improved.

  Further, since the movable blade is configured to swing, the plant can be cut by a combination of drawing and pressing, so that the conventional effect of preventing the cutting surface from being roughened can be ensured. .

  The present invention has a mechanism that reduces vibration with only one movable blade in which the movable blades are arranged in a single row, and is therefore a lightweight and highly durable cutter that does not widen and is very easy to use. It was realized.

  1 is a perspective view showing a trimming machine according to a first embodiment of the present invention, FIG. 2 is a front view showing a blade of the trimming machine according to the first embodiment, and FIG. 3 is a partially exploded state of the trimming machine according to the first embodiment. 4 is a perspective view showing a partially disassembled state of the trimming machine according to the first embodiment, FIG. 5 is a front view showing the blade of the trimming machine according to the second embodiment, and FIG. FIG. 7 is a perspective view showing a partially disassembled state of the trimming machine according to the second embodiment, and FIG. 8 is a relationship between the movable trimming blade and the fixed blade of the trimming machine according to the third embodiment. It is front explanatory drawing which shows.

  As shown in FIG. 1, the trimming machine according to the first embodiment of the present invention includes a trimming machine main body A and a blade B. The trimming machine main body A is a motor between the front gripping portion 4 and the rear gripping portion 5. A motor storage case 6 for storing 60 is provided, and an angle adjustment unit 7 is provided in front of the front gripping part 4 via a collar part 8. The angle adjusting unit 7 adjusts the inclination angle of the blade B with respect to the trimming machine main body A by tightening the adjusting screw into one adjusting hole selected from among a plurality of adjusting holes.

  A long blade B is provided that passes from the motor housing case 6 through the front grip 4 and the angle adjuster 7 and is exposed forward. The storage case 6 and the front grip 4 are connected and fixed by a fixing member 67. The rear grip 5 is provided with a safety device 50 and a power switch 51. A power cord 52 for supplying power from the outside is provided behind the rear grip 5, that is, at the rear end position of the trimming machine. Is provided. When the power switch 51 is turned on, the motor 60 is driven, and the cam member 61 inserted into the two hoop portions 10e and 11e that are overlapped in opposite phases is driven via the bevel blade gear 61c. The parts 10e and 11e reciprocate linearly in the reverse direction, and the movable blade operates. Each configuration will be described below.

  The blade B mainly comprises a fixed blade 2 and a movable blade 1 having a movable cutting blade pivotally attached to the fixed blade 2, and the tips of the movable cutting blade 1 and the fixed cutting blade 2 are substantially in the same direction. Is forming towards.

  The fixed blade 2 is integrally formed with a fixed plate 21 continuous in the longitudinal direction, and eleven fixed cutting blades 20 are arranged in the longitudinal direction of the fixed plate 21. The base end side of the fixed blade 2 is fixed to the fixed blade connecting portion 70 in the angle adjusting portion 7 of the trimming machine main body A. Further, between the fixed cutting blades 20, mounting holes 20 a for pivotally mounting the movable cutting blades 12 are provided.

  Further, as shown in FIGS. 1 to 3, the movable blade 1 of the trimming machine according to the first embodiment includes a plurality of movable cutting blades 12 having cutting blades 13 on both side surfaces and two shafts (first movable shaft). 10 and the second movable shaft 11) and the pivot member 3. That is, the movable blade 1 of the present invention functions as one movable blade 1 as a whole, although it has two shafts.

  The movable cutting blade 12 is provided with swinging shaft holes 12e and 12f at the central portion and support shaft holes 12c and 12d at the base end portion, and the cutting blades 13 are formed from the front end to both side surfaces. A total of 10 pieces are arranged between each fixed cutting blade 20. The swinging shaft holes 12e and 12f of all the movable cutting blades 12 and the mounting hole 20a of the fixed blade 2 are made to coincide with each other, and the swinging shaft member 3a which is the pivot member 3 is attached, so that it can move with respect to the fixed blade 2. The cutting blade 1 is pivotally attached in a swingable state.

  On the other hand, in the two shafts of the movable blade 1 in this embodiment, the first movable shaft 10 is formed relatively short with respect to the second movable shaft 11 as shown in FIG. Each of the first movable shaft 10 and the second movable shaft 11 includes five connecting shaft holes 10c and 11c corresponding to the support shaft holes 12c and 12d of the movable cutting blade 1 at regular intervals from the distal end side. On the side, annular hoop portions 10e and 11e used for the reciprocating motion of the shaft and elongated guide holes 10f and 11f are formed.

  The first hoop portion 10e that is the hoop portion of the first movable shaft 10 and the second hoop portion 11e that is the hoop portion of the second movable shaft 11 are both made of a hardened steel strip.

  The first hoop portion 10e and the second hoop portion 11e are overlapped with each other so that the first movable shaft 10 and the second movable shaft 11 are not in contact with each other, and the first hoop portion 10e is overlapped. The cam members 61 having opposite phases are fitted into the inner and second hoop portions 11e, respectively.

  The cam member 61 has a shape in which the first cam member 61a and the second cam member 61b are stacked and integrated with each other so as to be in opposite phases, and the first cam member 61a is provided in the first hoop portion 10e. The second cam member 61b is fitted into the second hoop portion 11e.

  The cam member 61 is integrally formed with a bevel blade gear 61c on its upper portion, and meshes with a gear 64 at the tip of the drive shaft 65 of the motor 60 positioned above the bevel blade gear 61c. With this configuration, the driving force of the motor 60 is transmitted to the cam member 61.

  Further, by inserting a guide pin 63 protruding from the inner bottom surface 62 of the motor storage case 6 into the guide long holes 10f and 11f, the guide long holes 10f and 11f are formed by the movement of the cam member 61. The structure guides the guide pin 63 and passes the shaft through the shaft guide member 66 attached to the inner bottom surface 62 to ensure accurate shaft reciprocation.

  The first movable shaft 10 has a configuration in which a connecting shaft hole 10c and a support shaft hole 12c in the first movable cutting blade 12a are axially attached, and the second movable shaft 11 has a connecting shaft hole 11c. And the support shaft hole 12d in the second cutting blade.

  As described above, the movable blade 1 according to the first embodiment has the connecting shaft hole 10c of the first movable shaft 10 from the longitudinal center to the proximal end side, and the connecting shaft of the second movable shaft 11 from the longitudinal center to the distal end side. The connecting shaft holes 10c and 11c are arranged in a line in the longitudinal direction with the hole 11c being positioned, and the pivot member 3 (support is supported with respect to the connecting shaft holes 10c and 11c and the supporting shaft holes 12c and 12d of the movable cutting blade 12. The shaft member 3b) is pivotally attached, and the pivot member 3 (the pivot shaft member 3a) is pivotally attached to the mounting hole 20a in the fixed blade 2 and the pivot shaft holes 12e and 12f of the movable cutting blade 12. A single movable blade 1 is formed, and the entire blade B is light and thin.

  With the above configuration, when the first cam member 61a and the second cam member 61b are operated in opposite phases by driving the motor 60, as shown in FIG. The blade 12a and the second movable cutting blade 12b are swung so as to be line-symmetric to reduce vibration. The first movable cutting blade 12a cooperates with the fixed cutting blade 20 positioned on the proximal end side from the longitudinal center of the fixed blade 2, and the second movable cutting blade 12b extends from the longitudinal center of the fixed blade 2 to the distal end side. Cut the vegetation by cooperating with the fixed cutting blade 20 located.

  The trimming machine according to the second embodiment of the present invention is different from the first embodiment only in the two shafts of the movable blade 1 in the first embodiment, and as shown in FIGS. Each of the 1st movable shaft 10 and the 2nd movable shaft 11 consists of shaft base materials 10a and 11a and shaft end members 10b and 11b.

  The shaft base members 10a, 11a and the shaft end members 10b, 11b are connected to each other by using screws 35a and nuts 35b in holes communicating with each other. According to the configuration of the second embodiment, when the blade B is worn out or damaged, only the shaft end members 10b and 11b or the shaft end members 10b and 11b are connected to the fixing member while leaving the shaft base materials 10a and 11a. The body itself can be removed, and maintenance can be greatly improved.

  The trimming machine according to the third embodiment of the present invention is the same as the first and second embodiments regarding the trimming machine main body A including the cam mechanism, and is different only in the movable blade 1 configuration. Further, the movable cutting blade 12 is provided with swinging shaft holes 12e and 12f at the center portion and supporting shaft holes 12c and 12d at the base end portion, and the cutting blades 13 are formed from the front end to the side surface. A total of ten pieces are arranged between each of the eleven fixed cutting blades 20, and the pivot shaft holes of all the movable cutting blades 12 and the mounting holes 20a of the fixed blades 2 are made to coincide with each other. The point that the movable cutting blade 12 is pivotably attached to the fixed blade 2 by attaching the swing shaft member 3a) is the same as in the first and second embodiments.

  The movable blade 1 according to the third embodiment includes a first movable shaft 10 and a second movable shaft 11 having substantially the same length as shown by phantom lines in FIG. Is provided so as to sandwich. In the third embodiment, the odd-numbered movable cutting blades 12 from the base end side become the first movable cutting blades 12a, and the even-numbered movable cutting blades 12 from the base end side become the second movable cutting blades 12b.

  The connection shaft hole 10c of the first movable shaft 10 and the support shaft hole 12c of the first movable cutting blade 12a are attached by the pivot member 3 (support shaft member 3b), and the connection shaft hole 11c of the second movable shaft 11 is It is the structure which pivotally attached to the shaft hole 12d of the 2nd movable cutting blade 12b with the pivot member 3 (support shaft member 3b).

  According to the configuration of the third embodiment, as shown in FIG. 8, the adjacent movable cutting blades 12 in the movable blade 1 swing in the opposite direction, and the first movable cutting blade 12 a is the longitudinal center of the fixed blade 2. The second movable cutting blade 12b cooperates with the fixed cutting blade 20 positioned on the distal end side from the longitudinal center of the fixed blade 2 in cooperation with the fixed cutting blade 20 positioned on the base end side from the cutting edge. To do.

  The first movable shaft 10 and the second movable shaft 11 reciprocate in the reverse direction in the same manner as in the first embodiment with a stroke that does not allow the adjacent first movable cutting blade 12a and second movable cutting blade 12b to contact each other.

  In addition, although the 1st movable shaft 10 and the 2nd movable shaft 11 in the said Example 3 are each comprised from one shaft, like Example 2 with respect to Example 1, shaft base material 10a, 11a and a shaft are comprised. It can also be set as the structure which joined the end members 10b and 11b. Note that the shaft may be configured to connect three or more members.

  Although the cam mechanism that realizes the reverse phase is disclosed in the above embodiment, the present invention is not intended to limit the cam mechanism that realizes the reverse phase to the above embodiment, and the cam mechanism that realizes the reverse phase. As long as it is a mechanism, various known means can be used for the number and shape of the cam members.

  Furthermore, in the present invention, the order of the first movable cutting blade 12a and the second movable cutting blade 12b is not limited, and various combinations can be used. Further, in the present invention, “the substantially same number of first movable cutting blades and second movable cutting blades” need not be the same number, and the number of first movable cutting blades 12a and second movable cutting blades 12b. If the difference is up to about two, a sufficient effect for vibration reduction can be obtained, which is preferable.

  In any of the first movable cutting blade 12a, the second movable cutting blade 12b, and the fixed cutting blade 20 in the present invention, the shape of the cutting blade 13 can be a curved shape as well as a linear shape.

  Furthermore, although the pivot member 3 in the embodiment of the present invention is constituted by a screw and a nut that are screwed together, the present invention is not limited to this, and various known means such as caulking pins can be used. it can.

It is a perspective view which shows the trimming machine which concerns on Example 1 of this invention. It is a front view which shows the blade of the trimming machine which concerns on Example 1 of this invention. It is a front view which shows the partial decomposition | disassembly state of the blade of the trimming machine which concerns on Example 1 of this invention. It is a perspective view which shows the partial decomposition | disassembly state of the trimming machine which concerns on Example 1 of this invention. It is a front view which shows the movable cutting blade of the trimming machine which concerns on Example 2 of this invention. It is a top view which shows the movable cutting blade of the trimming machine which concerns on Example 2 of this invention. It is a perspective view which shows the partially disassembled state of the trimming machine which concerns on Example 2 of this invention. It is a front view which shows the blade of the trimming machine which concerns on Example 3 of this invention.

Explanation of symbols

A A trimming machine main body B Blade 1 Movable blade 10 First movable shaft 10a Shaft base material 10b Shaft end member 10c Connection shaft hole 10e Hoop part 10f Slot for guide 11 Second movable shaft 11a Shaft base material 11b Shaft end member 11c Connection shaft Hole 11e Hoop portion 11f Guide long hole 12 Movable cutting blade 12a First movable mowing blade 12b Second movable mowing blade 12c Support shaft hole 12d Support shaft hole 12e Oscillating shaft hole 12f Oscillating shaft hole 13 Cutting blade 2 Fixed Blade 20 Fixed cutting blade 20a Mounting hole 21 Fixed plate 3 Pivot member 3a Oscillating shaft member 3b Support shaft member 4 Front gripping portion 5 Rear gripping portion 6 Motor storage case 60 Motor 61 Cam member 61a First cam member 61b Second Cam member 61c Slope blade gear 62 Inner bottom surface 63 Guide pin 64 Gear 65 Drive shaft 66 Shaft guide member 67 Solid Ingredients 68 rotating shaft 7 angle adjusting assembly 70 fixed blade connecting portion

Claims (2)

A fixed blade formed by arranging a plurality of fixed cutting blades;
In a trimming machine comprising a plurality of movable cutting blades pivotally mounted on a fixed blade and pivotally mounted on a movable shaft so as to be swingable between the fixed cutting blades, and a movable blade having the movable shaft,
The plurality of movable cutting blades in the movable blade consists of a first movable cutting blade and a second movable cutting blade that are substantially the same number,
The movable shaft in the movable blade consists of a first movable shaft and a second movable shaft,
The shaft connecting part of the first movable cutting blade is attached to the first movable shaft,
The shaft connecting portion of the second movable cutting blade is configured to be attached to the second movable shaft,
The first movable shaft and the second movable shaft that are shorter than the second movable shaft are polymerized without contacting each other,
The end of the first movable shaft and the end of the second movable shaft are connected by a cam member to enable relative linear reciprocating motion between them,
By the linear reciprocation of the first movable shaft and the second movable shaft, the first movable cutting blade and the second movable cutting blade swing in the opposite directions, and the first movable cutting blade and the fixed cutting blade cooperate. A trimming machine, wherein the second movable cutting blade and the fixed blade cooperate. A fixed blade formed by arranging a plurality of fixed cutting blades;
In a trimming machine comprising a plurality of movable cutting blades pivotally mounted on a fixed blade and pivotally mounted on a movable shaft so as to be swingable between the fixed cutting blades, and a movable blade having the movable shaft,
The plurality of movable cutting blades in the movable blade is composed of approximately the same number of first movable cutting blades and second movable cutting blades,
The movable shaft in the movable blade consists of a first movable shaft and a second movable shaft,
The shaft connecting part of the first movable cutting blade is attached to the first movable shaft,
The shaft connecting part of the second movable cutting blade is attached to the second movable shaft,
The first movable cutting blade and the second movable cutting blade are alternately arranged,
The first movable shaft and the second movable shaft can be linearly reciprocated relative to each other, and the first movable cutting blade and the second movable cutting blade can be moved by the linear reciprocating motion of the first movable shaft and the second movable shaft. However, the trimming machine swings in the reverse direction, the first movable cutting blade and the fixed cutting blade cooperate, and the second movable cutting blade and the fixed blade cooperate.

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