JP3352017B2 - Obi 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 banding machine that binds, using a tape, a material to be bound in which a large number of bills, sheets, envelopes and the like are stacked.

[0002]

2. Description of the Related Art As shown in FIGS. 7 and 8, a pair of arms 2 and 3 project upward from both sides of a rectangular parallelepiped main body 1. They are connected, and are surrounded by the main body 1, the arms 2, 3 and the connecting portion 4 to form a rectangular through hole 5. In the main body 1
Bundling roller 6, auxiliary roller 7, moving holding device 8, receiving plate 9,
The holding plate 10 and the like are accommodated.

[0003] On a table 13 forming the upper surface of the main body 1, a passage groove 15 for sending and pulling out a tape 14 is formed between the arms 2 and 3. A passage groove 16 is also formed in the connecting portion 4 so as to overlap with the passage groove 15.
An opening 17 is formed in the upper surface of the connecting portion 4 so as to communicate with the passage groove 16 so that a part of the tape 14 can protrude upward.
A passage groove 18 is formed on the inner surface of the arm 3 in communication with the passage grooves 15 and 16. A pair of guide plates 20 and 21 extend upward from a front edge and a rear edge on the left end side of the passage groove 15 of the table 13, and are connected to the bottom surface of the connection portion 4. The guide plates 20 and 21 form a passage groove 19 for the tape 14. A loop-shaped tape guide 50 is configured by the above-described passage grooves 15, 16, 18, and 19.

[0004] A tape guide 24 is rotatably held in the vicinity of the delivery / bundling roller 6 for pulling back the tape 14. The tape guide 24 is rotated according to the attitude angle of the tape 14. The rotation direction of the delivery / bundling roller 6 is reversed between the time of tape delivery and the time of bundling. Tape guide 2
As shown in FIG. 9, an upper plate 27 and a lower plate 28 each having rectangular through holes 25 and 26 are disposed so as to be close to each other and project from both side edges of the upper plate 27. Multiple nails 27a
Are bent downward and fixed to both side edges of the lower plate 28. An inverted L-shaped position detection arm 29 protrudes from one side edge of the upper plate 27, and a position detection sensor 30 including a photosensor, a microswitch, and the like is disposed at the protruding end.

A mounting plate 33 projects upward from a peripheral edge of the through hole 25 of the upper plate, and the mounting hole of the mounting plate 33 is engaged with the rotating shaft 7a of the auxiliary roller 7 and is rotatably supported. Upper plate 27
The tape 14 is passed through the gap between the tape 14 and the lower plate 28. A part of the peripheral surface of the sending / bundling roller 6 and the auxiliary roller 7 which oppose each other protrudes into the through holes 25 and 26 of the lower plate and the upper plate, respectively, and the tape 14 is sandwiched between the peripheral surfaces. You.

The tape guide 24 is rotatable in accordance with the attitude angle of the tape 14 which is led out to the object 35 to be bound from a position where the sending / bundling roller 6 and the auxiliary roller 7 sandwich the tape 14. Each operation process of the conventional strapping machine is shown in FIG.
A, B, and C and FIGS. 11A, B, and C. In FIG. 11C, after moving the tied object 35 having been strapped from the table 13 to another place, the receiving plate 9 is advanced to the original position, and the next tied object 35 is set on the table 13 and started. By pressing a button or by automatic start, as shown in FIG. 10A, the sending / bundling roller 6 is rotated to send out the tape 14 so that the leading end thereof reaches near the far end of the receiving plate 9 (referred to as sizing). At the same time, the moving clamp 8 (the tape 14 is sandwiched between the clamping members 8a and 8b so as to pass freely) is rotated once to feed the tape 14 onto the table 13 to form a loop.

While the feeding of the tape 14 is continued, the holding plate 10 is raised, and the leading end of the tape 14 is held between the holding plate 10 and the receiving plate 9 (FIG. 10B). The moving holding tool 8 is retracted from the tape 14, the sending / bundling roller 6 is reversed, and the tape 14 is pulled back. The tape is stretched linearly, the tape guide 24 is rotated by the tape 14 in the same direction as the tape 14, and the tip of the position detection arm 29 enters deep into the concave portion of the position detection sensor 30, whereby the position detection sensor 30 Is the tape guide 24
Is detected (FIG. 10C).

The pressure plate 37 and the heater 38 (supported by the support member 39) are raised, and the tape 14 is heated and welded while the start and end portions of the tape 14 are superimposed between the tape and the receiving plate 9. At the same time, the moving holding tool 8 which has been retracted is advanced to hold the tape 14 (FIG. 11A). After slightly raising the cutter 40 attached to the support member 39 and cutting the end of the end portion of the tape 14, the cutter 40 is returned to the original position, and the holding plate 10 is returned to the original position (the position shown in FIG. 10A). ) (FIG. 11B).

After welding the tape 14, the pressing plate 3
After returning the heater 7, the heater 38, and the cutter 40 to their original positions (positions in FIG. 10A), the receiving plate 9 is retracted from between the tape 14 and the material 35 to be bound, and the banding operation is completed (FIG. 11C). . Note that the movable holding tool 8 only moves forward and backward and rotates at a predetermined position, and does not move vertically.

[0010]

In order to bind the object 35 with the tape 14, it is necessary to first form a loop of the tape 14. To that end, the tape 14 must be somewhat stiff. However, recently, there has been a strong demand from the user side to use an extremely thin tape such as an extremely thin paper tape or a synthetic resin tape for bundling. In a conventional strapping machine, even if such a tape having a low waist is used, a loop cannot be formed, so that it cannot respond to a user's request. The present invention has been made in view of such a situation, and an object of the present invention is to realize a strapping machine that can bind even a tape having a weak waist.

[0011]

(1) According to the first aspect of the present invention, the tape guide is formed by facing each groove of a pair of guides having a U-shaped cross section facing each other and extending in a loop shape.
When the tape is fed out and a loop of the tape is formed, the pair of U-shaped guides are respectively brought closer to the inside (the side approaching the other party) so as to be able to engage with both side edges of the tape. A tape guide opening and closing mechanism for releasing the engagement with the tape.

[0012] (2) Then, a U-shaped cross-section guide loop inner end plate a plate member in the center side of the opposite side of the plate body outer end plate, when the plate member connecting them both to the intermediate plate The width of the inner end plate is significantly smaller than the width of the outer end plate. (3) In addition, Te Pugaido closing mechanism, a main cam that is rotated by a motor, a main cam follower bearings driven to the main cam, is arranged vertically along the right or left side plate of the housing, the main A cam driven bearing is rotatably mounted,
Elongated first moved down or up by main cam
A plate cam and a first plate cam disposed vertically along the other side plate of the housing, biased downward by a coil spring, and connected to the first plate cam by a wire extending along the upper surface of the housing;
An elongated second plate cam which is moved upward or downward in conjunction with the plate cam, and rotatably opposed to and mounted on outer surfaces of portions of the pair of U-shaped guides arranged along the both side plates; And a plurality of pairs of plate cam driven bearings engaged with both side edges of the first and second plate cams and separated or approached by the movement of the plate cams.

(4) In the invention of claim 2 , in the above (3), the first and second plate cams are slidably mounted on the housing by plate cam support bearings engaging with both side edges of each of the plate cams. Supported.

[0014]

1 to 6 show an embodiment of the present invention.
, Parts corresponding to those in FIGS. 7 to 11 are denoted by the same reference numerals. The banding machine of the present invention is also provided with a loop-shaped tape guide 50 (consisting of 51 and 52) as in the conventional example. The material to be tied 35 is placed on the receiving plate 9, and the tape 14 is sent out along the tape guide 50 by the sending / bundling roller 6 to form a tape loop around the object to be tied 35 and the receiving plate 9. The trailing end of the tape is pulled back by the bundling roller 6, the diameter of the loop is reduced, and the start and end of the tape 14 are welded so that the tape is in close contact with the material to be bound.

In the present invention, the tape guide 50 is formed by extending the respective grooves of a pair of (in cross-section) U-shaped guides 51 and 52 facing each other so as to face each other and form a loop. Further, in the present invention, a tape guide opening / closing mechanism 53 is provided, and when the tape 14 is fed out and a loop of the tape is formed, the pair of U-shaped guides 51 and 52 are respectively set inside (the side approaching the partner).
And can be engaged with both side edges of the tape 14. Therefore, the tape 14 is guided by the tape guide 50 even if the waist is weak, and the loop can be reliably formed. At the time of binding, the U-shaped guides 51 and 52 are separated from each other outward to release the engagement with the tape 14 (claim 1). Therefore, the tape 14 can be released from the tape guide 50 (51, 52) to reduce the diameter of the loop and bind it.

(Cross section) The plates on the center side of the tape loops of the U-shaped guides 51 and 52 are the inner end plates 51a and 52a, the opposite plates are the outer end plates 51b and 52b, and the plates for connecting them. When the body is the intermediate plates 51c and 52c, the inner end plate 5
1a, the width of the 52a outer end plate 51b, becomes soluble than the width of 52b Ru formed smaller. In this manner, in the step of sending out the tape 14 by bringing the U-shaped guides 51 and 52 close to each other,
Even when the tape is clogged for some reason, the space between the inner end plates 51a and 52a is released, so that the tape 14 is held between the fingertip and the inner surfaces of the outer end plates 51b and 52b through the opening thereof. Feed in the direction to correct a tape jam.

The tape guide opening / closing mechanism 53 includes a main cam 6
1, a main cam driven bearing 62, a first plate cam 63, a wire 64, a second plate cam 65, a coil spring 66, a plate cam driven bearing 67 and the like. The main cam 61 is the motor 7
4 (FIG. 2), the main cam driven bearing 62 is moved up and down. The elongated first cam 63 is vertically arranged along one of the left and right sides of the housing, in this embodiment, the left side plate 2 (FIG. 2), and a main cam driven bearing 62 is rotatably attached to a lower end thereof. Driven bearing 62
Is slid downward or upward.

The elongated second plate cam 65 is connected to the right side plate 3 of the housing.
Are arranged vertically along the lower end thereof, and the lower end thereof is biased downward by the coil spring 66, and the upper end thereof is located on the upper surface of the housing (the connecting portion 4).
Is connected to the upper end of the first plate cam 63 by a wire 64 extending along the first plate cam 63, and is slid upward or downward in conjunction with the first plate cam 63. A plurality of pairs of plate cam driven bearings 67 are provided on the outer surfaces of a pair of U-shaped guides 51 and 52 disposed along both side plates 2 and 3 of the housing, that is, the outer end plate 51.
b and 52b are rotatably opposed to each other.
The pair of plate cam driven bearings 67 engage with both side edges of the first plate cam 63 and the second plate cam 65 , and are separated or approached by the movement of the plate cams.

As shown in FIG. 4, first and second plate cams 6 are provided.
3, 65 are engaged with the plate cam support bear rig 74 at both side edges thereof, and are tape guide columns 73 (standing vertically along both side plates of the housing) by the plate cam support bearing 74.
Slidably supported by U-shaped guides 51 and 52
A pair of metal fittings 77 and 78 are provided on both horizontal upper and lower ends.
And 79, 80 are attached, respectively, and fittings 77, 78
Both ends of the coil spring 75 are attached to the gap and 79 and 80. The pair of U-shaped guides 51 and 52 are biased toward each other by these coil springs 75.

The slide shaft 7 attached to the tape guide post 73 is inserted into the through holes of the pair of metal fittings 79, 80.
6 is inserted. Wire 64 is a tape guide post
It is supported by a wire support bearing 72 rotatably mounted on a bearing shaft 72a mounted on the upper end of 73 . The inclined fittings 54 to 57 attached to the U-shaped guides 51 and 52 are provided to lift the tape from which the receiving plate 9 has come off after welding and cutting, and the receiving plate 9 is provided below the lifted tape. Is able to return.

[0021]

According to the present invention, since the loop-shaped openable / closable tape guide 50 is constituted by the pair of U-shaped guides 51 and 52, even if the tape is weak, the tape can be sent out along the guides. A loop can be reliably formed. When the widths of the inner end plates 51a, 52a of the U-shaped guides 51, 52 are smaller than the widths of the outer end plates 51b, 52b, the space between the inner end plates 51a, 52a is released. It can be sent and can correct the tape jam.

[Brief description of the drawings]

FIG. 1 is a view showing an embodiment of the present invention, in which A is a perspective view showing a principle configuration, B is a front view of a second plate cam 65 of A and its periphery, and C is an openable / closable tape guide 50 of A. Aa ′ sectional view of FIG.

FIG. 2 is a front view showing the embodiment of the present invention.

FIG. 3 is a sectional view taken along line aa ′ of FIG. 2;

FIG. 4 is a sectional view taken along the line bb 'of FIG. 2;

FIG. 5 is a sectional view taken along the line cc 'of FIG. 4;

FIG. 6 is a sectional view taken along line dd ′ of FIG. 4;

FIG. 7 is a view showing a conventional strapping machine, wherein A is a plan view and B is a front view.

FIG. 8 is a side view of the strapping machine of FIG. 7;

9 is a perspective view of the tape guide 24 of FIG. 7 and its periphery.

FIG. 10 is a diagram for sequentially explaining the first half operation steps of the strapping machine of FIG. 7;

FIG. 11 is a diagram for sequentially explaining the latter half of the operation process of the strapping machine of FIG. 7;

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-8-2506 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B65B 13/06 B65B 13/18 B65B 13 / 32

Claims (2)

(57) [Claims] 1. A tape guide having a loop shape, a tape is sent out along a tape guide by a feed roller to form a loop of the tape around an object to be bound, and a trailing end of the tape is pulled back by a binding roller. In a banding machine that reduces the diameter of the loop, adheres the tape to the object to be bound, and welds the start and end of the tape, the grooves of the pair of U-shaped cross-section guides that face each other face each other. When the tape guide is formed by extending in a loop shape, the tape is fed out, and when forming a loop of the tape, the pair of U-shaped guides are brought close to the sides approaching each other and both sides of the tape. to allow edge engageable, upon binding, is each tape guide opening and closing mechanism for releasing the engagement between the tape is separated by an opponent set only, the center side of the U-shaped cross-section guide of the loop plate
Is the inner end plate, the opposite plate is the outer end plate, and both are connected.
When the plate body is an intermediate plate, the width of the inner end plate is
The tape guide opening and closing mechanism is formed to be considerably smaller than the width of the plate, and the tape guide opening / closing mechanism is provided along a main cam rotated by a motor, a main cam driven bearing driven by the main cam, and a left or right side plate of the housing. Vertically arranged, said
A main cam driven bearing is rotatably mounted, and
Elongated first plate moved downward or upward by cam
It is arranged vertically along the cam and the other side plate of the housing.
A wire that is biased downward and extends along the top of the housing
An ear connected to the first plate cam, the first plate cam
Elongate second plate moved upward or downward in conjunction with
A cam and the pair of U-shaped guides are disposed along the side plates.
Part is rotatably opposed to the outer surface of the
1, engaging with both side edges of the second plate cam to transfer the plate cams.
Multiple pairs of plate cam driven bears separated or approached by movement
A banding machine comprising a ring . 2. The device according to claim 1 , wherein the first and second plate cams are slidably supported by a housing by plate cam support bearings that engage with both side edges of each of the plate cams. Obi machine.