JP2546868Y2 - Band feeder in binding machine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a band feeding device used in a packaging machine, and more particularly to a band feeding device in a binding machine.

[0002]

2. Description of the Related Art Generally, a material to be bound which has been film-wrapped by a packaging machine or the like is bound by a band by a binding machine in the next step.

In this binding machine, an arch-shaped guide frame is erected from both sides of a binding table, and FIG. 5 is provided near the entrance of a loop-shaped band guide housed inside the guide frame.
And a band feeding device a as shown in FIG.

The band feeder a comprises a feed mechanism e comprising a drive roller c and a driven roller d, and a guide cylinder f arranged on the outlet side (left side in FIG. 6) of the feed mechanism e. The band b sent between the flat outer peripheral surfaces g and h of the rollers c and d was sent into a loop-shaped band guide through a passage i having a rectangular cross section provided in the guide cylinder f.

[0005]

[Problems to be Solved by the Invention] Recently, the band b handled by the binding machine tends to be increasingly switched to a thinner one in order to make it easier to adapt to the outer shape of the object to be bound.

Therefore, when a small feeding resistance is generated by the guide tube f or the band guide when the thin band b is sent out from the feeding mechanism e, the band b buckles under a compressive load in the feeding direction. In addition, there is a problem that the band b is clogged on the outlet side of the feeding mechanism e and the band cannot be supplied to the band guide.

[0007] In view of such a conventional situation, the present invention provides a band feeder in a binding machine that enables smooth band supply without causing buckling even when the band is thin. The purpose is.

[0008]

According to the present invention, there is provided a band feeding device for a banding machine, wherein the band is fed into a loop-shaped band guide, and a band curved in a loop along the band guide is formed into a band. A band feeder for feeding a band into the band guide, wherein one of the outer peripheral surfaces is formed as a convex surface, and the other is formed as a concave surface. And a driven roller, wherein the outer peripheral surfaces of the driven roller and the driven roller are arranged so as to face each other so as to form a hole having a cross-sectional curved state through which the band can pass. And a guide tube having a tubular shape through which a band sent from the band feed mechanism to the band guide can pass, and inside the guide tube, in order to maintain a curved state of the band, A pair of support greens that support each side green portion of the band in line contact from the outer peripheral side and a support green that presses the center portion in the width direction of the band by line contact outward from the inner peripheral side are pressed. It is characterized by being provided along the feed direction.

[0009]

[Function] In the band feeding device of the binding machine of the present invention,
The guide provided in the guide tube along the feed direction of the band when the band that has been bent into a transverse section by the band feed mechanism is guided by the guide tube and fed into the band guide N.
By being supported by the two support greens, the cross-sectional curved state of the band is maintained. Therefore, the van N in the cross-sectionally curved state and the cross-sectionally curved state are fed into the band guide by the driving loaf and the driven loaf. Moreover, there is no danger of a large resistance being applied because the vane N being sent out at high speed by the driving loof and the driven loof is only in line contact with the three supporting greens provided inside the guide tube. Also, there is no possibility of buckling when passing through the guide tube. Then, even in the band N fed into the band guide while maintaining the cross-section curved state without buckling, even in the band guide, it is conveyed without buckling and bent in a loop shape.

[0010]

An embodiment of the present invention will be described below with reference to the drawings.

A band feeder 1 shown in FIGS. 1 and 2
Is applied to a binding machine 51 as shown in FIG.

In the binding machine 51, a band guide 54 is held by appropriate means inside a guide frame 53 which is erected from both sides of a binding table 52 in an arch shape. Ridge support edge 1 similar to guide tube 5
4 and a step supporting edge 15 are formed. In addition, near the inlet 54a of the band guide 54, the band feeding device 1 of the present invention and a known heat welding cutting mechanism 55 are provided, and both ends of the band guide 54 are connected to both sides of the heat welding cutting mechanism 55. ing. 56 is a band pool box, 5
A band reel 7 is connected to a band pull-back mechanism (not shown) for reversing the band reel 57.

The band feeder 1 includes a band guide 5
And a band feeding mechanism 4 including a driving roller 2 and a driven roller 3, and a guide cylinder 5 disposed near an outlet of the band feeding mechanism 4. It consists of Reference numeral 6 denotes a drive unit which is connected to the drive roller 2 via a transmission mechanism 7 such as a chain.

One of the driving roller 2 and the driven roller 3 (the driven roller 3 in this embodiment) has an arc-shaped convex surface 8 and the other (the driving roller 2 in this embodiment) has an arc-shaped convex surface. By forming the concave surface 9 and arranging the two 8 and 9 with the gap C therebetween, a hole die 10 for feeding out the flat band B in an arcuate curved state (see FIG. 1) is formed. I have.

The guide cylinder 5 is used to maintain the curved state of the band B until the band B sent from the band feeding mechanism 4 enters the band guide 54.
1 and the lower half 12 are connected by bolts or the like.

The upper half 11 is provided with a ridge support edge 14 for pushing down the central portion of the band B by providing a ridge 13 projecting downward from the center position. The lower half 12 includes a central bottom surface 15 and the central bottom surface 15.
And two step supporting edges 17 for supporting both side ends of the band B upward by the step surfaces 16 provided on both sides of the band B.
The band B is supported at three points by the step supporting edge 17 and the ridge supporting edge 14, so that the band B advances while maintaining an arcuate curved state.

Next, the operation of the above embodiment will be described.

In FIG. 4, when an object W to be bound is carried on the binding table 52, the band B stored in the band pool box 56 is fed toward the entrance 54a of the band guide 54 by the band feeding device 1. .

At this time, the band B is fed into the guide cylinder 5 by being curved in a bow shape by the hole die 10 of the band guide feeding mechanism 4. In the guide tube 5, the band B is formed by the ridge support edge 14.
While being supported at three points by the step support edges 17 and 17, it enters the entrance 54 a of the band guide 54 while maintaining an arcuate curved state.

Accordingly, the band B sent out from the band feeding mechanism 4 is curved in an arc shape and can tolerate a large compressive load. Therefore, even if a feed resistance is generated by the guide cylinder 5 and the band guide 54, the band guide does not buckle. Smooth band supply is performed up to the end.

Thereafter, when the band B passes over the heat welding cutting mechanism 55 and the tip is held by appropriate means,
The band B is strongly pulled back by the reversing operation of the band reel 57 by the band pull-back mechanism (not shown), so that the band B is strongly wound around the material W to be bound on the binding table 52, and then the band welding is performed by the heat welding cutting mechanism 55. The part is subjected to heat welding and the band unnecessary part is cut.

In the above embodiment, the convex surface 8 may be formed on the driving roller 2 and the concave surface 9 may be formed on the driven roller 3. Further, the hole type formed by the convex surface 8 and the concave surface 9 may be used. 10 may be a chevron instead of a bow.

[0023]

As described above, the band feeding device in the binding machine according to the present invention has three bands provided on the guide cylinder, which are fed at a high speed in a cross-sectionally curved state by the driving roller and the driven roller of the band feeding mechanism. By supporting green,
While being kept in the curved state, it is reliably fed into the band guide without buckling.

Accordingly, since the van N fed by the band feeding mechanism is guided at a high speed without being clogged in the guide cylinder and the loop-shaped band guide, the workability of the band to be bound by the band is remarkably improved. I do. Especially,
Even in the case of a thin band, it does not buckle, so that the winding work on the object to be tied becomes easy.

[Brief description of the drawings]

FIG. 1 is a side view of a band feeding device.

FIG. 2 is a front view showing the band feeding device in a partial cross section.

FIG. 3 is a side view of a guide cylinder.

FIG. 4 is a front view showing a main part of the binding machine.

FIG. 5 is a side view showing a conventional example of a band feeding device.

FIG. 6 is a front view showing a conventional example of a band feeding device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 band feeder 2 drive roller 3 driven roller 4 band feed mechanism 5 guide cylinder 8 convex surface 9 concave surface 10 hole type 14 ridge support edge 17 step support edge 51 binding machine B band C gap

Claims (1)

(57) [Scope of request for utility model registration] 1. A banding machine in which a band fed into a loop-shaped band guide and curved in a loop shape along the band guide is wound around an object to be bound. A driving roller and a driven roller, one of which has a convex outer surface and the other has a concave outer surface, and a driving roller and a driven roller. A band feeding mechanism arranged so that the outer peripheral surfaces of the band members are opposed to each other so as to form a hole having a cross-sectional curved state through which the band can pass, and a band fed from the band feeding mechanism to the band guide passes therethrough. And a pair of supports for supporting each side green portion of the band by line contact from the outer peripheral side in order to maintain a curved state of the band inside the guide tube. A band feeding unit for the binding machine, wherein the green and the supporting green for pressing the center part in the width direction of the band in a line contact from the inner peripheral side to the outside are respectively provided along the feeding direction of the band. apparatus.