JPS5850856Y2 - Cutter drive device in binding machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cutter drive device for a tying machine that wraps a tying wire around objects to be bound, such as grape vines and support wire, and twists and binds the wires.

In the present invention, a cutter and a cutter drive link are housed inside a main body bundle having a narrow width, and the cutter drive link effectively utilizes this action.

Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.

In the figure, 1 is a main body bundle with an inverted U-shaped cross section, and 2 is an operation bundle with a U-shaped cross section, the tip of which is fixed to the tip shaft part 3 of the main body bundle 1 with a pivot shaft 4. It is pivoted so that it can be opened and opened.

5 is an arc-shaped rack, the upper end of which is connected to the main body bundle 1;
It is attached to the rear of the body with bolt 6 and nut 7.

An opening 8 is formed at the rear end of the operating bundle 2 for the arcuate rack 5 to pass through.

9 is a main rotating shaft, which is rotatably installed between the front end wall 10 and the rear end wall 11 of the operation bundle 2; 12 is a pinion attached to the rear end of the main rotating shaft 9; It meshes with rack 5.

13 is a stopper for the pinion 12.

14 is a twisting claw, and the main rotating shaft 9 is connected to the tip wall 10.
It is formed by bending the part that protrudes forward.

Reference numeral 15 denotes a hanging link, the upper end of which is pivotally connected to the center of the main body bundle 1 by a fixed pivot shaft 16.

Reference numeral 17 denotes a drive pin attached near the upper end of the hanging link 15, and is engaged with a guide slot 34 of a cutter drive link 31, which will be described later.

Reference numeral 18 denotes a movable shaft attached to the lower end of the hanging link 15, which is equipped with a roller 19 that moves around the inner bottom of the operating bundle 2, and is prevented from being pulled out upward by the main rotating shaft 9.

20 is an interlocking link, the lower end of which is pivotally connected to the movable shaft 18.

21 is a movable shaft attached to the upper end of the interlocking link 20, and is provided with rollers 22 that move around the inner bottom of the main body bundle 1.

Reference numeral 23 denotes a return spring, which is stretched between the movable shaft 21 and a fixed pivot shaft 24 attached to the tip of the main body bundle 1.

Reference numeral 25 denotes a cutter mount, which is mounted inside the tip of the main body bundle 1.

Reference numeral 26 denotes a cutter consisting of a fixed blade 27 and a movable blade 28, and is received on the cutter mounting base 25 with bolts 29 and nuts 30.

31 is a cutter drive link, the tip of which is connected to pin 3.
2 is pivotally connected to the movable blade 28, and 33 is a rising portion formed by bending the rear end of the cutter drive link 31, and is provided with a guide elongated hole 34.

A drive pin 17 attached to the suspension link 15 engages with the guide elongated hole 34.

In addition, 35 is a wire bending device, 36 is a wire feeding device, and when closing the operation bundle 2, the wire bending device 3
5 opens and opens, and when the operating bundle 2 is opened, the wire feeding device feeds out the binding wire 37.

Since the present invention is constructed as described above, the parts 19 and 22 are located inside the operating bundle 2, respectively, by gripping the main body bundle 1 and the operating bundle 2 and closing the operating bundle 2 as shown by the chain line in FIG. The bottom part and the inner bottom part of the main body bundle 1 roll, the hanging link 15 rotates counterclockwise around the fixed pivot shaft 16, and the interlocking link 20 is used for return as shown by the chain line in FIG. It moves backward against the spring 23.

When the operating bundle 2 is released, the operating bundle 2 is opened by the return spring 23 and the interlocking link 20 as shown by the solid line in FIG.

When the pinion 12 of the main rotating shaft 9 is engaged with the arcuate rack 5 and the operating bundle 2 is open, the drive pin 17 attached to the suspension link 15 is moved to the cutter drive link 31 as shown in FIG. is in contact with the front edge of the guide slot 34,
Since the movable blade 28 of the cutter 26 is open as shown in FIG.
0 rotates counterclockwise, and the drive pin 17 moves toward the guide table (L3
The movable blade 28 does not operate until it comes into contact with the rear edge of the blade 4.

During this time, the tip of the tying wire 37 is bent by the wire bending device 35 into a C shape so as to surround the object to be bound, for example, the support wire 38 and the grape vines placed along it. The base of the binding wire 37 is fitted by the fitting claw 14 .

When the drive pin 17 is further moved by the hanging link 15 and pulls the cutter drive link 31 backward, the movable blade 28
is closed and the base of the binding wire 37 is cut.

After the cutting is completed, the operation bundle 2 reaches the closed position as shown by the chain line in FIG. Prepare.

As shown in FIG. 5, the cutter 26 is housed inside the main body bundle 1 with a narrow width, and the bolt 29 and pin 32 are close to each other, so the moment acting on the movable blade 28 is small. However, in the present invention, as shown in FIG. Since the distance is a fraction of the distance between the fixed pivot axis 16 and the movable axis 18, the hanging link 15 smoothly moves around the fixed pivot axis 16 via the rollers 19 when closing the operating bundle 2. As the cutter drive link 31 rotates counterclockwise, the drive pin 17 becomes a point of leverage and a large force is applied to the cutter drive link 31, thereby increasing the cutting force.

As can be easily understood from the above explanation, according to the present invention, the cutter and the cutter drive link are housed within the main body bundle, making it convenient to handle the binding machine, and this action is achieved by the operation of the cutter. The cutting force can be increased depending on the type of material being used.

Furthermore, since the cutter operation timing can be set by the position of the elongated hole, it can be set extremely accurately.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which FIG. 1 is a partially longitudinal side view, FIG. 2 is a sectional view taken along line II-II in FIG. 1, and FIG. 4 is a partially enlarged longitudinal sectional side view of the main part, and FIG. 5 is a bottom view of FIG. 4. 1: Main body bundle, 2: Operation bundle, 3: Tip shaft section,
5: Arc rack, 9: Main rotating shaft, 12: Pinion, 14
: Twisting claw, 15: Hanging link, 17: Drive pin, 18: Movable shaft, 19: Roller, 25: Cutter mounting base,
26: Cutter, 27: Fixed blade, 28: Movable blade, 31: Cutter drive link, 34: Guide slot.

Claims (1)

[Scope of utility model registration request] An operating bundle with a U-shaped cross section is pivotally attached to the tip shaft of the main bundle with an inverted U-shaped cross section so that it can be opened, and is equipped with a pinion that engages with an arc-shaped rack attached downward to the rear end of the main bundle. In this binding machine, a main rotating shaft is installed on the operation bundle, and a set claw is bent at the tip of the main rotating shaft. A cutter consisting of the following shapes is attached, a guide elongated hole is formed at the rear end of the cutter drive link pivotally connected to the movable blade, and a drive pin attached to the hanging link pivotally connected to the central part of the main body bundle is attached to the guide length. A cutter drive device for a binding machine, characterized in that a roller is attached to the lower end of the hanging link to engage the hole and roll on the inner bottom of the operating bundle.