JPH0451134Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a clinching device that clinches staples while maintaining their correct posture in a pneumatic or manual binding machine.

(Prior Art) As this type of binding machine, the one shown in Japanese Patent Publication No. 3682/1982 is known. this is,
A staple and a driver are guided to a clincher position by a fixed driver guide and a slide driver guide, and the legs of the staple are clinched to bind the neck near the bag opening of a bag filled with sausages, etc. be. By the way, as shown in FIG. 5, the slide driver guide 5 is further guided by a guide block 13 and slides. However, since there is a slight gap between the guide block 13 and the slide driver guide 5 to smooth the sliding operation,
This gap also causes play in the slide driver guide 5. For this reason, the leg of the staple S pressed against the clincher 4 by the driver 2 cannot be accurately guided, and the staple S is tilted within the fixed driver guide 3 and slide driver guide 5, forming a triangular rice ball shape. Clinching may result in poor binding.

(Objective of the invention) An object of the present invention is to eliminate the above-mentioned drawbacks and provide a clinching device for a binding machine that can always accurately clinch staples.

(Means for Achieving the Object) In order to achieve the above object, the clinch device in the binding machine according to the present invention includes a fixed driver guide that guides one side of the staple and the driver to the clincher position, and a fixed driver guide that guides one side of the staple and the driver to the clincher position. The binding machine includes a slide driver guide that is normally located at a distance from the clincher and slides to a position where it comes into contact with the clincher together with the staple as the driver drives the driver. Move the slide driver guide toward the fixed driver guide side along the slope of the tip of the guide and either the clincher or the contact portion of the clincher side member that comes into contact with the tip. It is characterized by forming an inclined surface that allows

(Operations and Effects of the Invention) As described above, according to the present invention, when the slide driver guide slides together with the staple and contacts the clincher as the driver drives the staple, the slide driver guide moves along the slope of the inclined surface. It is subjected to a force directed toward the fixed slide guide. Therefore, even if there is play in the slide driver guide, the slide driver guide is moved toward the fixed driver guide just before the driver clinches the staple, so the staple is firmly pinched by the two driver guides. Therefore, the clinch is performed accurately without leaning.

Therefore, the practical effects of the present invention are very large.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

In FIG. 1, reference numeral A indicates a binding machine. This tying machine A uses air pressure to wrap staples S around the neck N of bag-like articles and bind them. A driver 2 for driving the staples S to the clincher position is mounted on a base 1, and a driver 2 for driving the staples S to the clincher position is installed on the base 1. and a fixed driver guide 3 that guides one side of the driver 2 to the clincher position, and a fixed driver guide 3 that guides the staple S and the other side of the driver 2 and is normally located away from the clincher 4 as the driver 2 drives. and the clincher 4 together with the staple S.
A slide driver guide 5 that slides to a position where it contacts the driver, a piston/cylinder mechanism (drive mechanism) P that drives the driver 2 and the slide driver guide 5, and the piston/cylinder mechanism P.
It is equipped with a trigger lever (two plates arranged opposite each other) 6, 6, which constitutes a starting switch.
In addition to the above-mentioned components, the base 1 includes the above-mentioned piston and
Valve 7 for controlling the operation of the cylinder mechanism P
Others are provided. In the piston/cylinder mechanism P, the piston housed in the cylinder 8 is divided into a sub-piston 9 and a main piston 10, and the driver 2 is connected to the main piston 10 via a cylindrical piston rod 11. The slide driver guide 5 is connected to the push rod 12 which is fitted inside the slide driver guide 5. Further, 13 is a guide block that guides the slide driver guide 5.

The detailed structure and operation of the binding machine A are described in Japanese Patent Publication No. 61-3682, and will only be briefly explained here. In addition, the "slide driver guide" in this specification is based on the above-mentioned Special Publication Act 1986
It is the same as the "staple guide member" of No.-3682.

After inserting the neck part N of the bag-like object into the notch recess 14 of the trigger levers 6, 6, rotate the neck part N.
is placed on the clincher 4, and at the same time, the ends of the trigger levers 6, 6 are pushed into the valve stem end 15 of the piston forward movement valve 7a. As a result, compressed air is supplied from the air supply path 16 to the sub-piston upper chamber 17 of the piston-cylinder mechanism P, and the sub-piston 9 moves forward while dragging the main piston 10 to drive the driver 2. After a little delay, the push rod 12 is also driven, and the slide driver guide 5 is also driven, and the staple S driven out by the driver 2 is guided by the fixed driver guide 3 and the slide driver guide 5 and then delivered to the clincher 4.
It is carried to the upper binding position. When the tip of the slide driver guide 5 hits the surface of the clincher holder 22 that holds the clincher 4, the compressed air in the piston upper chamber 17 passes through the air supply hole 19 formed in the middle of the cylinder 8 to the main piston 10. Since it is supplied between the upper surface and the lower surface of the sub-piston 9, only the main piston 10 moves forward.
The driver 2 is further driven, whereby the leg tips of the staples S are pushed into the clincher 4 and clinched, thereby binding the neck N of the bag-like article.

When the driver 2 reaches the forward end, the block 20 provided at the tip of the piston rod 11
rotates the switching lever 21, and the tip of the switching lever 21 pushes the valve stem end 23 of the piston return movement valve 7b. As a result, the supply path 16 is connected to the atmosphere and the air in the sub-piston upper chamber 17 is exhausted, and compressed air is then supplied from the air supply hole 24 to the main piston lower chamber 25.
The main piston 10 moves the driver 2 and slide driver guide 5 back to their original positions together with the sub-piston.

Next, in the binding machine A, when the slide driver guide 5 comes into contact with the clincher 4, an inclined surface that causes the slide driver guide 5 to act toward the fixed driver guide 3 side is formed between the slide driver guide 5 and the clincher 4. is formed between. That is, a damper member 26 made of an elastic material such as rubber is attached to the distal end surface of the slide driver guide 5 in a protruding manner. The contact portion of the clincher holder 22 that the tip end surface of the damper member 26 contacts is not perpendicular to the sliding direction of the slide driver guide 5;
An inclined surface 27 is formed with a downward slope toward the clincher 4 side. Note that the clincher holder 22 is a member that holds the clincher member 4a having the clincher 4.

Therefore, as shown in FIGS. 2a and 2b, the slide driver guide 5 slides toward the surface of the clincher holder 22, and the damper member 26 moves toward the surface of the clincher holder 22 as shown in FIG. When this happens, since the surface is formed as an inclined surface 27, the damper member 26 is subjected to a force that moves along the slope, so that the slide driver guide 5 approaches the fixed driver guide 3 side.
Therefore, the staple S is tightly pressed by the fixed driver guide 3 and the slide driver guide 5, and is held in the correct posture as shown in FIG. 4D, so that it is accurately clinched.

Note that the inclined surface 27 is not limited to the example formed on the surface of the clincher holder 22. For example, the third
As shown in Figures a and b, an inclined surface 27 may be formed at the tip of the slide driver guide 5, and the damper 26 (contact portion) of the clincher holder 22 may be brought into contact with the inclined surface 27. Alternatively, as shown in FIGS. 4a and 4b, an inclined surface 27 may be formed on the clincher 4 itself, and the damper 26 at the tip of the slide driver guide 5 may be brought into contact with the inclined surface 27.

Furthermore, the binding machine is not limited to one driven by air pressure. It may be a manual type.

[Brief explanation of drawings]

FIG. 1 is an overall schematic explanatory diagram of the binding machine according to the present invention, FIGS. Figures a and b are explanatory diagrams showing other embodiments of the operation of the inclined surface accompanying the operation of the slide driver guide, respectively, and Fig. 5 is an explanatory diagram of the operation by a conventional clinch device. Code, A... Binding machine, S... Staple, 2...
...Driver, 3...Fixed driver guide, 4...
Clincher, 5...Slide driver guide, 2
2... Clincher holder, 26... Damper member,
27...Slope surface.

Claims (1)

[Claim for Utility Model Registration] A driver that drives the staple to the clincher position, a fixed driver guide that guides one side of the staple and driver to the clincher position, and a fixed driver guide that guides the staple and the other side of the driver and that normally operates the clincher. A binding machine comprising: a slide driver guide that is located at a distance from the driver and slides together with the staple to a position where it comes into contact with the clincher as the driver operates; and a drive mechanism that drives the driver and the slide driver guide. , fixing the slide driver guide to either one of the tip of the slide driver guide and the contact portion of the clincher or a member on the clincher side that comes into contact with the tip, along the slope of the slide driver guide on the driver guide side; A clinch device for a tying machine, characterized in that a slanted surface is formed to move the clinch toward the tying machine.