JPH0547043Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a binding machine for binding flexible objects such as bundles of newspapers with bands.

(Prior Art) Generally, when a flexible item such as a folded and stacked bundle of newspapers is shipped to a store, it is wrapped in a film or the like and then tied with a band for convenient handling during transportation. At this time, if the number of newspapers or the like is small, there is a risk that the bundle of articles to be bound may be bent by the tightening force of the binding band.
In order to prevent this, it is conventionally known to insert width regulating plates between the bands on both sides of the object to be bound and the object to be bound when tightening the band (for example, Tokuko Showa 50-
(See Publication No. 30520). This device includes an arch-shaped band guide passage, a band feeding means for feeding the band in forward and reverse directions, a means for thermally welding and cutting the wound band, and a pair of width regulating plates. The pair of width regulating plates are each regulated so as not to move inward from the width of the objects to be bound, and are each urged outward from the objects by springs. . In this device, a pair of width regulating plates at positions wider than the width of the objects to be bound are tightened together with the objects to be bound by the winding force of the band, so that the objects to be bound do not become smaller than their original width; This prevents the objects to be bound from bending.

In addition, there is also a device that automatically corrects the positional deviation of the feeding position of the objects to be bound that are fed to the binding machine, while assuming that the device is equipped with a protruding member formed by a pair of width regulating plates. , has been known for a long time (for example, see Japanese Patent Publication No. 43975/1983). this is,
The projecting member is composed of a cylinder and a rod inserted into the cylinder and guided forward and backward, and the rod and cylinder can be forcibly moved in the width direction of the objects to be bound by the cylinder. In this device, the objects to be bound are fed between a pair of cylinders that are set on both outer sides in the width direction of the objects to be bound, and the cylinders are driven to move the pair of cylinders inward from each other. The objects to be bound are moved and adjusted by sandwiching them from both sides, thereby correcting the position of the objects to be bound to a predetermined center position.Then, rods are respectively projected from the pair of tubes. It is designed to play the same role as the width regulating plate mentioned above.

(Problem to be solved by the invention) However, all of the above conventional binding machines
Since this is intended to suppress the winding force and prevent the objects to be bound from bending, pulling out the width regulating plate or protruding members such as rods causes the band to become loose after binding, as shown in Fig. 8. As shown in FIG. 2, a problem arises in that the band after binding is curved at the center in the width direction of the objects to be bound, separates from the objects to be bound, and is likely to be caught on the conveyor during conveyance.

In addition, in the case of a binding machine that uses the pair of width regulating plates to prevent the objects from bending, the width regulating plate is moved by the winding force of the band, so the winding resistance at this time is reduced. This causes problems such as a reduction in processing capacity and a tendency for the width regulating plate to wrap around the packaging film covering the objects to be bound, resulting in a breakdown.

This invention was made in consideration of the above circumstances, and its purpose is to prevent the objects to be bound from bending, while eliminating inconveniences during transport by ensuring that the band on the bottom side of the object to be bound is in close contact with the object after binding.

(Means for Solving the Problem) In order to achieve the above object, the invention claimed in the utility model registration claims includes an arch-shaped band guide path surrounding the objects to be bound in the width direction, and a band inside the band guide path. Welding and cutting the bands so as to form a loop in a tightened state using a band feeding means for feeding the material in forward and reverse directions, and a band surrounding the object to be bound in the band guide path, which is driven in reverse by the band feeding device. A band welding/cutting means is provided, and a pair of binding adjustment means are respectively disposed near positions on both sides in the width direction of the object to be bound and adjust the binding state of the object to be bound by tightening the band, The binding adjustment means includes a protruding member that moves forward and backward in a direction perpendicular to the band and is inserted between the band and the object to be bound, a projecting member guide that guides the projecting member forward and backward, and is integrated with the projecting member guide. and a cylinder for moving the protruding member in the width direction of the object to be bound.

Both protruding members of the pair of binding adjustment means are each formed into a plate shape, and are rotated in opposite directions so as to move the projecting members toward and away from each other while symmetrically changing the relative angle with respect to the lower surface of the object to be bound. Connect with cylinder. In addition, both of the protruding members have a first state in which the band is restricted from being tightened before the band is tightened by the band feeding means, and a first state in which the protruding members restrict the tightening of the band by the welding and cutting means. The lower end corners of each of the protruding members in the inclined state change the rotational position stepwise to the second state for forming a fold in the band corresponding to each corner of both lower end edges of the object to be bound. The driving amount of the cylinder is set so that the conversion is performed.

The first state is set such that both protruding members that have been protruded from the protruding member guide to the band position are moved closer to each other and are positioned at inner positions of both ends in the width direction of the object to be bound. The second state is changed from the first state to the side where both the projecting members are moved away from each other, so that the lower end corners of both the projecting members in the inclined state are in the vicinity of both lower end edges in the width direction of the object to be bound. The configuration is such that it is positioned at an outside position.

(Function) The band is sent in the forward direction to the band guide passage by the band feeding means and goes around once, and the tip of the band reaches the band welding/cutting means. The protruding members protruding from the pair of protruding member guides are positioned at the inner side of both ends in the width direction of the objects to be bound by the drive of the cylinder with respect to the objects to be bound that are fed into the band guide path. The first state is reached. This first
In this state, the band is sent in the opposite direction by the band sending means, and the object to be bound is tightened with the protruding member sandwiched between the bottom surfaces. At this time, since the pair of protruding members are located on the inner side of both ends in the width direction on the bottom side of the object to be bound, even if the object to be bound is tightened, the distance between the two projecting members or less will not exceed the distance between the two protruding members. There isn't.

Then, the tightened band is welded and cut by the band welding/cutting means while both the protruding members are in the first state, and then both the protruding members in the first state are released by the drive of the cylinder. A second state is reached in which the binding member is moved toward the outer side of the object to be bound and positioned at an outer position near both lower edges in the width direction of the object to be bound. At this time, the two protruding members rotate and move outward in the width direction in an inclined state with respect to the bottom surface of the object to be bound, so that the band on the bottom side of the object to be bound is pulled to both sides by the lower end corners of the two projecting members. When the band is stretched, both of the protruding members stop at the outer position with the band being stretched, so that a fold is formed in the band at this position by the lower end corner of the protruding member.

Due to the formation of this crease, the band becomes creased,
Since this fold is in close contact with the bottom corner of both widthwise ends of the object to be bound, the space between the two folds is stretched, so that the width of the bottom side of the object to be bound is The band at the intermediate portion in the direction also comes into close contact with the object to be bound. This prevents the band of the objects to be bound and the conveyor from getting caught during conveyance.

(Example) The present invention will be explained below based on the drawings.

1 to 3 show a flexible material binding machine 1 according to an embodiment of the present invention, 2 is a binding section disposed on a pedestal, and this binding section 2 is arranged in an arch shape on the pedestal. It has a band guide passage 2' which guides the band 4 so that it goes around once. 3 is disposed at an intermediate position of the lower passage of the band guide passage 2', and forms a loop by welding and cutting the tip of the band 4 in the band guide passage 2' and the band 4 on the feeding source side. The band welding/cutting means 5 is a band feeding device that sends the band 4 in the forward and reverse directions with respect to the guide path by rotating forward and backward. Also,
6a, 6b, 6c, 6d and 7a, 7b, 7c,
7d is a conveyor 8a, 8b, 8c that is driven intermittently to convey the objects to be bound to a predetermined position so that the objects are surrounded in the width direction by the band guide path 2';
These are three binding adjustment means including protruding members 15a, 15b, 15c and protruding member guides 12a, 12b, 12c, which will be described later.

These three binding adjustment means 8a, 8b, 8c are attached to the band guide passage 2' on the plate 9 constituting the pedestal.
They are arranged at predetermined intervals along the lower passage. These 8a, 8b, and 8c have similar structures, and among them, the center binding adjustment means 8a and the left binding adjustment means 8b in FIGS. 1 and 2 are arranged symmetrically. Furthermore, the binding adjustment means 8c on the right side is oriented in the same direction as the binding adjustment means 8a in the center.

Hereinafter, the structure of each of the bundling adjusting means 8a, 8b, 8c will be explained using the central one 8a as a representative (see FIG. 3 and FIG. 2). This binding adjustment means 8a includes a rotating shaft 11a and a rotating shaft 1.
1a, a lever 13a fixed to the base end of the rotating shaft 11a, a sliding body 14a fitted to the middle part of the rotating shaft 11a, and An inverted L-shaped protruding member 15a fixed to the tip side of the sliding body 13a
and the rotating shaft 1 is connected to the lever 13a.
1a, and a cylinder 18a that is engaged with the sliding body 14a to move the projecting member 15a forward and backward with respect to the band 4.

The rotating shaft 11a is connected to the plate 9 and this plate 9.
It is supported by a bracket 10a attached to the band guide passage 2', and is rotatable around an axis perpendicular to the band 4 in the lower passage of the band guide passage 2'.

The tip of the protruding member guide 12a extends to a position slightly in front of the band 4, and the plate-shaped tip of the protruding member 15a is inserted through the protruding member guide 12a, and is rotated by the rotation of the rotating shaft 11a. It is adapted to be rotated integrally with the protruding member guide 12a. The protruding member 15a is guided forward and backward by sliding inside the protruding member guide 12a.
The protruding member 15a is designed to protrude and retract from the tip of the protruding member 15a when the cylinder 18a is protruding.
The tip of the band protrudes to a position above the band 4 in the lower passage.

The sliding body 14a is fitted so as to be slidable along the rotating shaft 11a while being prevented from rotating relative to the rotating shaft 11a. A roller 21a attached to a reciprocating member 20a at the tip of the rod of the cylinder 18a is engaged with a groove formed on the outer periphery of the sliding body 14a. 21a pushes and pulls the sliding body 14a and the protruding member 15
a is moved forward and backward relative to the band 4.

The lever 13a extends in a direction perpendicular to the rotating shaft 11a, and has a protruding end on one side connected to the rod tip of the cylinder 17a. A stopper 22a is adjustably attached to the plate 9 to abut against the other protruding end of the lever 13a to prevent further rotation of the lever 13a.
The rotation of the protruding member guide 12a and the protruding member guide 15a is stopped to position the protruding member 15a in a first state, which will be described later.

The cylinder 17a is supported by a bracket 16a attached to the plate 9, and the cylinder 18a is supported by a mounting plate 19a attached to the bracket 16a.

The other bundling adjusting means 8b and 8c have the same construction as the bundling adjusting means 8a as described above, and corresponding components are indicated using the suffix b instead of the suffix a. And the binding adjustment means 8
b is arranged symmetrically with the bundling adjusting means 8a, and the protruding moving means 8c is arranged symmetrically with the bundling adjusting means 8b. When a small object to be bound, such as a newspaper folded in half, is detected, the pair of binding adjustment means 8b and 8a are activated, and when a large object, such as a newspaper folded in four, is detected, the binding adjustment means 8b and 8a are activated. A pair of binding adjustment means 8b and binding adjustment means 8c are adapted to operate.

That is, each pair of binding adjustment means 8b, 8
Both protruding members 15 in a or 8b, 8c
b, 15a or 15b, 15c are each formed into a plate shape, and the rotating shafts 11b, 15c are driven by cylinders 17b, 17a or 17b, 17c.
By rotating 11a, 11b, and 11c in opposite directions, they move toward and away from each other while changing their relative angles with respect to the lower surface of the object to be bound P symmetrically. Hereinafter, the configuration, operation, and effect of the pair of binding adjustment means 8b and 8a for the object to be bound P corresponding to the eight-fold newspaper of each pair will be explained, and the other pair of binding adjustment means 8b and 8c will be explained. Omitted.

Both protruding members 15b, 15a in the pair of binding adjustment means 8b, 8a are connected to both cylinders 17b,
Depending on the amount of drive of 17a, the rotational position is changed in stages to a standby state (the state shown in Fig. 4), a first state (the state shown in Fig. 5), and a second state (the state shown in Fig. 6). is now being converted. That is,
Until the object to be bound P is fed, as shown in FIG.
It is in a standby state where it is waiting at a position outside of.

Then, at a stage before the object to be bound P is fed and the band 4 is tightened by the band feeding means 5,
With the tips of the projecting members 15b, 15a projected from the projecting member guides 12b, 12a to the band position, both cylinders 17b, 17a are regulated by the stoppers 22b, 22a, as shown in FIG. It is considered to be the most stretched state. As a result, both the protruding members 15b and 15a are moved closer to each other, and are respectively positioned in an inclined state at slightly inward positions of both ends of the object P in the width direction (horizontal direction in FIG. 5). The first state is set as follows.

Then, after the band 4 is tightened in the first state and the band 4 is welded and cut by the band welding/cutting means 3, both the cylinders 17b and 17a are shrunk by a predetermined amount, as shown in FIG. When the projecting members 15b and 15a are actuated to the side, the projecting members 15b and 15a separate from each other while applying a tensile force to the band 4, move to an outer position near both lower edges in the width direction of the object to be bound, and move to a second position. It is said to be in a state of In other words, when transitioning to the second state, both protruding members 15b and 15a, which were in the inclined state in the first state,
Both protruding members 15b, 15 are in an inclined state as the band 4 formed into a loop by the lower end corner of the tip end is pulled left and right and reaches the second state.
A fold is formed in the band 4 by each corner of a, which corresponds to each corner of both lower edges of the object P to be bound.

Next, a method of bundling objects P using the above-configured bundling machine 1 will be described with reference to a case where small objects such as eight-folded newspapers are input.

Conveyor 6a, 6b, 6c, 7a, 7b, 7c
When the objects to be bound P fed by the detector are detected by a detector (not shown), a pair of binding adjustment means 8
a and the cylinders 17a, 17 of the binding adjustment means 8b.
b extends and the levers 13a, 13b rotate the rotating shafts 11a, 11b, and the protruding member guides 12a, 12b fixed to their tips rotate from the standby state to the first state, and both 12a, 12b are rotated. Move to a position where the width is slightly smaller than the width of the objects to be bound. This position is adjusted by stoppers 22a, 22b. At the same time, cylinder 18
a, 18b are extended, the sliding body 14a moves forward, and the tips of both protruding members 15a, 15b protrude from the protruding member guides 12a, 12b. Projecting member 15
The positions of a and 15b are adjusted by stoppers.

When the protrusion of both protruding members 15a and 15b is completed, the band feeding means 5 is driven in reverse to tighten the band 4. At this time, the band 4 is held by both the protruding members 15a, 15b.
Since the distance is regulated so that the distance is not smaller than , even if the object to be bound P is flexible, it is prevented from being excessively deformed. Then, the band is welded and cut by the band welding/cutting means 3, and the band 4 is made into a loop (FIG. 5).

Thereafter, the cylinders 17a, 17b are contracted to bring both the protruding members 15a, 15b into the second state. As a result, a fold is formed in the band 4 of the rope in a state where the band 4 of the rope is stretched by the protruding members 15a and 15b, and a crease is formed by the fold.

Next, the cylinders 18a and 18b are shortened and the protruding members 15a and 15b are connected to the object P and the band 4.
The protruding member guide 12a is pulled out from between the
Retreat into 12b. And the cylinder 17a,
17b is shortened to form both the protruding members 15a, 15b.
Then, the protruding member guides 12a, 12b return to their original standby state.

In the above bundling, the protruding members 15a, 15b
, before tightening band 4, from the standby state to the first
Since the cylinders 17a and 17b are forcibly moved to this state by driving the cylinders 17a and 17b, the tightening force of the band 4 of the band feeding means 5 is not reduced, and the tightening of the band moves the protruding member toward the object to be bound. Compared to conventional binding machines that pull together, it is possible to improve the tightening processing capacity, and to prevent the possibility of the projecting member being entwined with the wrapping film surrounding the object to be bound, which occurs when the projecting member is attracted. I can do it.

By converting both the protruding members 15a and 15b from the first state to the second state, a fold can be formed in the band 4 which has become a loop, and the formation of this crease causes the band to have a crease. can be attached. Since this fold is in close contact with the bottom corner of both widthwise ends of the object to be bound P, the space between the two folds is stretched, so that the bottom side of the object to be bound P is stretched. The band 4 at the middle part in the width direction can be brought into close contact with the object to be bound P (see FIG. 7). As a result, the objects to be bound P during transportation
band 4 and conveyors 6a, 6b,..., 7a, 7
It is possible to prevent the occurrence of snags with b, . . .

(Effect of the invention) As explained above, according to the binding machine of the invention, since the band is tightened with both protruding members of the pair of binding adjustment means in the first state, the objects to be bound are In particular, since the folds are formed by converting both of the protruding members from the first state to the second state, the objects to be bound after binding can be prevented from bending. The band on the bottom side of the band and the object to be bound can be bound in close contact with each other, thereby reliably preventing the object from getting caught on a conveyor or the like during transportation of the object after binding. I can do it.

[Brief explanation of the drawing]

1 to 7 show an embodiment of the present invention, in which FIG. 1 is a partial front view with the lower part of the binding machine cut away, and FIG.
The figure is a plan view as seen from - in Fig. 1, Fig. 3 is a sectional view as seen from - in Fig. 1, Figs. FIG. 8 shows a cross-sectional view of objects bound by a conventional binding machine. 2'...Band guide passage, 3...Band welding/
Cutting means, 4...band, 5...band feeding means, 8a, 8b...binding adjustment means, 12a, 12
b... Protruding member guide, 15a, 15b... Protruding member.

Claims (1)

[Claim for Utility Model Registration] An arch-shaped band guide passage that surrounds the objects to be bound in the width direction; Band feeding means for feeding the band in the forward and reverse directions into the band guide passage; and the objects to be bound in the band guide passage. band welding/cutting means for welding and cutting the bands to form a loop while tightening the band surrounding the object by reverse drive of the band feeding device; a pair of binding adjustment means arranged to adjust the binding state of the objects to be bound by tightening the band; A projecting member inserted between the object to be bound, a projecting member guide for guiding the projecting member forward and backward, and a cylinder for moving the projecting member in the width direction of the object to be bound together with the projecting member guide. In the flexible object binding machine, the protruding members of the pair of binding adjustment means are each formed into a plate shape, and rotate in opposite directions to change the relative angles with respect to the lower surface of the object to be bound symmetrically. The protruding members are connected to the cylinder so as to approach and separate from each other, and both of the protruding members are in a first state for regulating the tightening of the band before the band is tightened by the band feeding means, and a first state for regulating the tightening of the band by the welding/cutting means. After welding and cutting the band, a second crease is formed in the band, which corresponds to each corner of both lower edges of the object to be bound, by the lower end corners of each protruding member, which are made to be in an inclined state. The driving amount of the cylinder is set so that the rotational positions of the cylinders are changed stepwise between the two states, and in the first state, both protruding members are protruded from the protruding member guide to the band position. The second state is a side where both the protruding members move away from each other from the first state. 2. A flexible material binding machine, characterized in that the lower end corner portions of both of the protruding members in an inclined state are positioned at outer positions near both lower end edges in the width direction of the object to be bound.