JP5083373B2 - Gardening tying machine - Google Patents

Description

  The present invention relates to a load reducing mechanism of a horticultural binding machine that reduces an operation load at a stage of binding a binding tape with staples.

  In general, as a horticultural binding machine used for binding seedlings, tree branches, and the like with a binding tape and fixing them to a support column, a one shown in Patent Document 1 is known.

  In this binding machine, the base part of the operating arm is pivotally supported in the middle of the elongated main collar, the middle part of the operation link is pivotally attached to the middle part of the lever, and one of the pivotal parts is gripped. A hook portion formed on the other end is engaged with an engagement protrusion provided on a side surface of the main hook portion, and the grip portion and the main hook portion are clamped and released to open and close the lever. The head portion at the tip of the lever and the head receiving portion at the front end of the main collar portion can be brought into contact with and separated from each other, and when released, the outside is put into a binding tape stretched between the head receiving portion and the head portion. After the object to be bound is inserted, the lever is closed, the staple is driven out from the head receiving portion, the head portion is bent and the binding tape is bound to bind the object to be bound.

  The engaging portion (30) with respect to the engaging protrusion (9) is not linear but formed in two steps between the lever (5) from the open state to bundling so that the inclination of the intermediate portion is increased. Is formed. The reason is that after the lever is closed, the operation load when the staple is further driven out and bundled is the largest, so the same operation load can be obtained by increasing the inclination of the engagement portion with which the engagement protrusion engages at this time. But this is so that you can get great power.

Japanese Utility Model Publication No. 4-46543

  However, when the bundling operation is continuously performed by the horticultural bundling machine, there is a problem that fatigue tends to occur.

  The present invention eliminates the above-mentioned drawbacks and pays attention to the fact that the operation load when bending the staple leg at the time of bundling is the largest, and can reduce the operation load at the time of bundling. The issue is to provide.

In order to solve the above-described problem, the invention according to claim 1 is configured such that the base portion of the clincher arm is pivotally supported in the middle of the main handle, and the middle portion of the operation link is pivotally attached to the middle portion of the clincher arm. One side is a grip part when viewed from the shaft attachment part, and a hook part formed at the other end is engaged with a hook engagement part provided on the main handle, and the grip part and the main handle are clamped and released. By opening and closing the clincher arm, the head part at the tip of the clincher arm and the head receiving part at the front end of the main handle can be brought into contact with and separated from each other, and the tension between the head receiving part and the head part when opened. After the object to be bound is put into the binding tape, the clincher arm is closed, staples are ejected from the head receiving portion, and the head portion is bent and tied. In a horticultural binding machine that binds an object to be bound by binding a tape, the operation link is slid while being engaged until the clincher arm is closed from an open state in which the hook portion is engaged with the hook engaging portion. A first engaging portion that moves, and a second engaging portion that slides while engaging the first engaging portion until the folding is completed after the staple is driven out, and The angle of the first engaging portion with respect to the longitudinal direction of the main handle is set to be larger than 60 °.

  The invention according to claim 2 is characterized in that, in claim 1, the angle of the first engaging portion with respect to the longitudinal direction of the main handle is set to 62 ° to 65 °.

  According to the first aspect of the present invention, the operation link includes a first engagement portion that slides while being engaged until the clincher arm is closed from the open state in which the hook portion is engaged with the hook engagement portion. A second engaging portion that slides while engaging until the folding is completed after the staple is driven out following the first engaging portion, and the main handle of the first engaging portion is formed. Conventionally, the angle with respect to the longitudinal direction was set to 60 °, but since this was made larger than 60 °, the operation load as a whole becomes smaller than that in the conventional case. Therefore, the operation load is reduced, and it is possible to obtain an effect that it is difficult to get tired even if the work is continued for a long time.

  According to the invention which concerns on Claim 2, the angle with respect to the longitudinal direction of the said main handle of the 1st engaging part was improved to the appropriate range of 62 degrees-65 degrees. As a result, although the operation load at the initial stage of operation is large, the operation load will be reduced if the initial operation state is exited. Can be secured.

It is the side view which showed a part of binding machine for gardening concerning this invention in the cross section. It is a side view of the closed state of the said binding machine. It is a side view of the open state of the said binding machine. It is a side view of the enclosure state of the binding thing of the said binding machine. It is a side view of the closed state of the said binding machine. It is a side view of the clinch end state of the binding machine. It is an enlarged view of the principal part of FIG. (A) (b) is the enlarged view of the principal part which showed the engaging part which concerns on this invention, and the conventional engaging part. (A) (b) is a side view of the operation link provided to another load reduction mechanism. It is explanatory drawing which shows the relationship between the angle of a 1st engaging part, and a load.

  FIG. 1 is a side view of a horticultural tying machine. This tying machine is provided at the intermediate part of the clincher arm 2 with the base part of the clincher arm 2 pivotally supported on a rotary shaft 3 provided in the middle of the elongated main handle 1. An intermediate portion of the operation link 4 is pivotally attached to the shaft 5, one of the shaft attachment portions is used as a grip portion 4 a, and a hook portion 6 formed at the tip of the other link portion 4 b is attached to the main handle 1. The head at the tip of the clincher arm 2 is engaged with a roller-like hook engaging portion 7 provided on the side, and the grip portion 4a and the main handle 1 are clamped and released to open and close the clincher arm 2. The portion 8 and the head receiving portion 9 at the front end of the main handle 1 can be brought into contact with and separated from each other.

  A binding tape receiving portion 10 is formed at the rear end portion of the main handle 1, and the leading end of the binding tape a is held in a lead-out portion 11 of the front end head receiving portion 9 of the main handle 1 so that it can be pulled out. A stapler main body 12 is disposed on the main handle 1. The stapler main body 12 includes a magazine 13 and a staple punching portion 14 in the same manner as a normal stapler, and is rotatably attached to the shaft 3 at an intermediate portion of the main handle 1. The magazine unit 13 stores connected staples in which gate-shaped staples are connected. Further, the staple driving unit 14 is provided with a driver plate 15 for driving the leading staple of the magazine unit 13 downward.

  The head portion 8 of the clincher arm 2 is provided with a clincher groove 16 corresponding to the staple driving portion 14 and a leading portion 17 at the tip of the binding tape a.

  In the above configuration, when a seedling or a tree branch is bound with the binding tape a, the clincher arm 2 is first closed as shown in FIG. 2 and the pulling portion 17 of the head portion 8 is connected to the binding tape a of the head receiving portion 9. The tip is held and opened as shown in FIG. Further, the objects to be bound b such as seedlings and branches are inserted from the outside of the binding tape a as shown in FIG. 4, and the clincher arm 2 is closed as shown in FIG. Further, as shown in FIG. 6, the grip portion 4a of the operation link 4 is firmly squeezed to further push the head portion 8, the staple at the tip of the magazine portion 13 is driven out by the driver plate (15), and the binding tape a is passed through the head portion. Eight clincher grooves 16 are pressed to bend the staple legs and bind the binding tape a. At the same time, the binding tape a is cut. Thereby, uniting is complete | finished.

  By the way, as described above, the operation of the binding machine from gripping the operation link 4 to binding the binding tape a is performed in the first stage until the clincher arm 2 is changed from the open state to the closed state (from FIG. 1 to FIG. 1). 2 or the operation shown in FIGS. 3 to 4) and the second stage operation (the operation shown in FIGS. 5 to 6) from the closed state until the driver plate 15 is operated to drive out the staples and bind the binding tape a. It is done. While these two-stage operations are performed, the engaging portion 18 following the hook portion 6 at the tip of the operation link 4 engages with the engaging portion 7 while continuously moving.

  The engaging portion 18 also has a first engaging portion 18a until the clincher arm 2 is closed from the open state, and a second until the folding is finished after the staple is driven after the closing, depending on the operation stage. And the engaging portion 18b.

  By the way, it is clear that the operation load is larger in the second stage operation in which the staple is driven and bent after the clincher arm 2 is closed than in the first stage operation in which the clincher arm 2 is simply closed.

  On the other hand, as shown in FIG. 7, the operation load is greater when the second engagement portion 18b is formed at a steep angle with respect to the terminal end 19 of the first engagement portion 18a. Although reduced, its half-surface stroke becomes longer. On the contrary, if it is formed at a gentle angle, the stroke becomes short, but the operation load becomes heavy.

  Therefore, when the staple state in the second stage from the time when the staple is driven until the end of the bending is examined in detail, the leg portion of the staple is straight immediately after the staple is driven, but the tip of the leg portion. Comes into contact with the clincher groove 16 and starts to bend when it is further pushed in, and then finishes bending completely. The load at the stage from when the staple is driven to when the staple starts to bend is the largest, and when the staple starts to bend to some extent, the load thereafter decreases sharply.

  Based on the above, as shown in FIG. 7 and FIG. 8A, the second engagement portion 18b is moved from the start of the staple until the staple starts to bend, and after the staple starts to bend. The first stage engaging part 20 is formed at a substantially right angle from the end 19 of the first engaging part 18a, and the second stage engaging part 21 is gently formed. .

  That is, the operation load decreases as the front engagement portion 20 that requires a large force to bend the staples approaches the right angle with respect to the end of the first engagement portion 18a, but the operation load 4 decreases. As a result, the grip portion 4a causes component interference. However, when the staple starts to bend, the load decreases rapidly, so that the rear-stage engaging portion 21 may have a gentle angle. Therefore, the rear stage engaging portion 21 is gently formed. In this way, the bending load of the staple is initially large, and the second engaging portion 18b is formed based on effective load distribution and stroke adjustment in response to the sudden decrease from the middle. The load can be reduced. When compared with the conventional second engaging portion 18b ′ shown in FIG. 8B, when the gripping portion 4a of the operation link 4 is squeezed during clinching, as shown in FIG. Since the angle of the force f2 acting on the clincher arm 2 is farther from the rotary shaft 3 side of the clincher arm 2 than the angle of the force f1 acting on the clincher arm 2, the operation load is reduced.

  The second engaging portion 18b forms the front engaging portion 20 at a steep angle, and the subsequent engaging portion 21 may be formed gently, and is not limited to the one formed by the two straight lines 20 and 21. For example, as shown in FIG. 9 (a), it may be formed by a plurality of three or more straight lines 20a, 21a, 21b... Or as shown in FIG. May be.

  Further, as shown in FIG. 8A, the angle of the second engagement portion 18b is a line connecting the end 19 of the first engagement portion 18a and the center of the rotating shaft 5 with the second relationship. The angle formed by the front-stage engaging portion 20 of the joint portion 18b means that the angle is steep, and the end 19 of the first engaging portion 18a is centered on the rotation shaft 5 of the operation link 4. The angle formed between the tangent line at the end 19 of the arc having the radius of the connecting line and the second engagement portion 18b (ie, 90 °) is smaller than the end 19 ′ of the conventional first engagement portion 18a ′ and rotates. This is an angle larger than an angle α (see FIG. 8B) formed by a line connecting the shaft 5 and the second engaging portion 18b ′. The angle of the second engaging portion 18b is smaller than 90 °. When the angle is larger than 90 °, the second engaging portion 18b is caught by the roller-shaped engaging portion 7 and the operation link 4 is moved. This is because it becomes difficult to return and it is impossible in reality. Incidentally, as shown in FIG. 8B, the angle α formed by the line connecting the terminal end 19 ′ of the conventional first engaging portion 18a ′ and the rotating shaft 5 and the second engaging portion 18b ′ is It was about 30 °.

  By the way, when the operation link 4 is shaped to reduce the clinch load as described above, as shown in FIG. 10, the distance between the main handle 1 in the initial operation state and the operation portion 4a of the operation link (main handle). When the operating stroke (L) is equal to that of the conventional one, the angle θ1 of the first engaging portion 18a with respect to the longitudinal direction of the main handle 1 (indicated by the alternate long and short dash line) is set to that of the conventional first engaging portion 18a ′. If the angle θ2 is larger than the angle θ2 with respect to the longitudinal direction of the main handle, the steeper angle θ1 physically reduces the operation load. However, this angle θ1 is raised with respect to the operation link 4. That is, when the operation of the clincher arm is started from the open state to the closed state, the angle of the force f3 acting on the clincher arm 2 when a force is applied to the grip portion 4a of the operation link 4 is the conventional clincher arm 2 Since the angle of the force f4 acting on the clincher arm 2 is closer to the rotating shaft 3 side, the operation load becomes heavier. For this reason, conventionally, the angle θ2 has been set to about 60 °.

  However, when the operation load in the first stage until the clincher arm 2 is opened or closed is examined in detail, the static friction coefficient acts particularly in the initial stage of operation, so the load is large, but the operation starts. Since the static friction coefficient moves with the dynamic friction coefficient, it was found that the subsequent load becomes so small that the weight is not felt.

  That is, if the angle θ1 is made closer to the conventional angle θ2, the operation load at the initial stage of operation becomes as light as the conventional one. If the angle θ1 is larger than the angle θ2, the operation load is large in the initial stage of operation, but if the initial state is exceeded, the operation load is reduced. Taking these into consideration, the most preferred angle is preferably about 62 ° to 65 ° (angle θ1).

  As described above, according to the binding machine, the angle of the first engagement portion 18a with respect to the longitudinal direction of the main handle 1 is changed from the conventional θ2 to θ1 with the stroke of the operation portion 4a maintained as before. Since it has been improved, it is possible to reduce the overall operation load and to obtain an effect that it is difficult to get tired even if the work is continued for a long time.

a binding tape 1 main handle 2 clincher arm 3 rotating shaft 4 operation link 4a gripping part 8 head part 9 head receiving part 18 engaging part 18a first engaging part 18b second engaging part

Claims (2)

Pivotally supported intermediate the base of the clincher arm of the main handle, the middle portion of the clincher arm pivotally attached rotatably to the intermediate portion of the operating link, one of the grip portion when viewed from the shaft attachment portion, the other The hook portion formed at the tip is engaged with the hook engaging portion provided on the main handle, the grip portion and the main handle are clamped, released, and the clincher arm is opened and closed to open and close the tip of the clincher arm. The head portion and the head receiving portion at the front end of the main handle can be brought into contact with and separated from each other, and the object to be bound is inserted into the binding tape stretched between the head receiving portion and the head portion when opened. After that, the clincher arm is closed, the staple is further driven out from the head receiving portion, the binding portion is bound by binding the binding tape by bending the head portion and binding the binding tape. A use binding machine,
The operation link includes a first engagement portion that slides while being engaged until the clincher arm is closed from an open state in which the hook portion is engaged with the hook engagement portion, and the first engagement portion. A second engaging portion that slides while engaging until the folding is completed after the staple is driven out, and
A horticultural binding machine , wherein an angle of the first engagement portion with respect to a longitudinal direction of the main handle is set to be larger than 60 °. 2. The horticultural binding machine according to claim 1, wherein an angle of the first engagement portion with respect to a longitudinal direction of the main handle is 62 ° to 65 °.

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