JPS5918245B2 - Binding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a binding device using adhesive tape, and in particular to a binding device that uses adhesive tape to reliably bind objects to be bound. .

Conventionally, binding devices for objects to be bound have been used in the Utility Model Act
As disclosed in Publication No. 77, there is a type of binding device that uses non-adhesive tape, but in this device, a pair of rollers that move toward and away from each other in conjunction with the binding arms are pulled out from the reel and placed on a holding stand. It is provided in the middle of the non-adhesive tape that is stretched over the object, and when binding objects to be bound, the roller is rotated while holding the non-adhesive tape in conjunction with the tilting movement of the binding arm. The tape is rewound to the reel side in an amount corresponding to the difference between the winding circumference of the object to be bound and the length from the arm end of the non-adhesive tape to the tip of the non-adhesive tape, and the object to be bound is bound. It's getting old.

By the way, this binding device has a structure in which the tape is held between a pair of rollers and rewound. Therefore, if adhesive tape is used in this binding device, the adhesive tape will roll onto the rollers during tape unwinding. This has the disadvantage that the adhesive tape cannot be used to bind objects if it is wrapped around the adhesive tape. If adhesive tape is used for this binding device, a device such as a weight roll is installed in the middle of the tape between the reel and the roll as a means of unwinding the tape, and when the binding arm stands up, the weight roll is used. It is conceivable to unwind the adhesive tape wrapped around the roller by pushing down a device such as a roll and applying tension (unwinding force) to the tape between the o-reel and the roller. The tension force of a device such as a weight roll is added to the tape part that is stretched over the holding table5. Therefore, when inserting the object to be bound, it is necessary to resist the tension force of the device such as a weight roll. This necessitates inserting the object to be bound, and the tension of the tape becomes too large, which causes problems such as making it difficult to bind weak objects. If the tape is forcibly inserted into the tape, an accident may occur in which the leading end of the tape comes off from the tape holder, or the tape being stretched may be cut in the middle, making it impossible to bind the tape. Furthermore, since the tape is loosened between the roller and the reel 5, when an adhesive tape is used, the surfaces to which it is attached may stick to each other and become tangled. Furthermore, when using this binding device outdoors, the tape is loose between the roller and reel, so when the rollers release the clamp, the tape may come off the roller due to the influence of the wind. There are drawbacks too.

Furthermore, since the amount of tape rewound by the roller is constant, if the circumferential length of the wrapped object differs, the tightening force will change, making it difficult to tighten with a constant tightening force depending on the size of the object. It also has the disadvantage of As a means to solve this problem, it is possible to provide a tape rewinding means between the binding arm and the reel, which rotates the reel itself in the unwinding direction in relation to the tilting movement of the binding arm. Then, during tying, it is possible to rewind the excess tape onto the reel and apply tension to the tape between the tape tip and the tape reel, but when the tying arm is raised, the object to be bound may come into contact with the tape. When pulling out the tape by pulling out the tape, the binding arm tilts due to the rotation of the reel as the tape is pulled out, so the load applied to the objects to be bound increases by the amount of tilting movement of the binding arm. When binding items with low binding strength, there is a risk that the items to be bound may be bent or damaged due to the tension of the tape.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a binding device that prevents the rotation of the reel from being transmitted to the binding arm via the tape rewinding means when the tape is pulled out when the binding arm is raised. .

DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below with reference to embodiments and drawings.

In FIGS. 1 and 2, 1 is a machine base, and 2 is a binding arm. The binding arm 2 is provided on the machine base 1 so as to be able to be raised and lowered around a rotation support shaft 3, and is always provided with a spring. 4, it is spring-biased in the upright direction.

Reference numeral 5 designates a stopper for determining the upright position of the binding arm 2.

Reference numeral 6 denotes a reel on which the tape 7 is attached, and is rotatably provided on the machine base 1 about its support shaft 8.

9, 9... are guide rollers that guide the tape 7 from the reel 6 toward the arm end 10 of the binding arm 2, and these are rotatable to the binding arm 2, respectively. It is pivoted to.

Reference numeral I denotes a tape holding means for supporting the tape 7 sent out from the arm end 10, and the holding means 1 is provided on a pillar 11 protruding from the machine base 1 in correspondence with the arm end 10. There is.

A mounting table 12 on which the bundle A is placed is provided in a space surrounded by the pillar portion 11 and the binding arm 2 so as to be movable up and down. is related to the downward movement of the binding arm 2, that is, the rotational movement in the tilting direction, and causes the reel 6 to rewind (counterclockwise in FIG. 2).
This is a rewinding means for rewinding the tape 7 onto the reel 6 by applying rotation of the tape 7 to the reel 6. is a binding means for binding the tape 7 wound around the bundle A when the binding arm 2 is lowered, and is a tape separation means for separating the binding portion 7a of the tape 7. As shown in FIG. 3A, the binding means includes a pressure receiving base 13 formed at the upper end of the column 11 of the machine base 1, and a pressing member attached to the arm end 10 of the binding arm 2 in correspondence with the pressure receiving base 13. It consists of a head 14.

A tape support base 16 is formed at the upper end of the column 11 on the opposite side of the pressure receiving base 13 with respect to the recess 15, and one of the guide rollers 9 attached to the binding arm 2 supports the tape support base when the binding arm 2 is lowered. 16. The tape holding means 1 includes a holding surface 17 formed on the side surface of the recess 15 on the side of the tape support stand 16, a pressing member 18 pivotably mounted on the column 11 so as to be able to rise and fall, and facing the holding surface 17, and the pressing member 18 toward the holding surface 17, and a tape holding roller 20 at the tip of the pressing member 18.
is pivoted.

Further, as shown in FIG. 3A, the tape separating means corresponds to a handle 22 that is rotatably mounted on a shaft 21 provided at the arm end 10 of the binding arm 2, and the tape holding means. It consists of a tape guide plate 23 projecting from the arm end 10 and a cutting blade 24 that moves up and down along the tape guide plate 23 in conjunction with the handle 22.

The handle 22 is biased in its upright direction by a spring 25, and its upper side is supported by a stopper 26.
Reference numeral 27 denotes a support to which a cutting blade 24 is attached, and its support portion 28 is inserted into and supported in an elongated hole 29 formed in the handle 22.

Further, a slope 30 is formed on the lower surface of the arm end portion 10 to act on the pressing member 18 and expand it against the spring force when the binding arm 2 is lowered, and the tape guide plate 23 is expanded. The cutting blade 24 enters between the tape guide plate 23 and the holding surface 17, and the cutting blade 24 enters between the tape guide plate 23 and the holding surface 17. The tape separating plate 3 is attached to the support 27.
1 is attached, and the separation plate 31 works in conjunction with the cutting blade 24 to push down the binding part 7a of the tape 7, and pivots the end of the binding part 7a cut by the cutting blade 24 to the pressing member 18. The tape is separated from the tape holding rollers 20 that are attached to the tape.
Further, 32 is a brush that presses and adheres the cut end 7b of the tape 7 separated from the binding portion 7a by the cutting blade 24 to the holding surface 17. The rewinding means includes a rotational power transmission mechanism A that connects the rotational support shaft 3 of the binding arm 2 and the support shaft 8 of the reel 6, as shown in FIG.

In the mechanism A, 33 is a first intermediate shaft, and a large pulley 34 mounted on the shaft 33 and a small pulley 35 mounted on the support shaft 8 of the reel 6 are connected by a belt 36. 37 is a second intermediate shaft, which meshes and connects the second gear 38 attached to the shaft 37 and the first gear 39 attached to the first intermediate shaft 33, and also serves as a rotation support shaft for the second gear 38 and the binding arm 2. 3 is meshed and connected to a sector gear 40 attached to the gear.

Here, the ratio of the number of teeth between the sector gear 40 and the second gear 38, the ratio of the number of teeth between the second gear 38 and the first gear 39, and the diameter ratio of the large pulley 34 and the small pulley 35 are respectively determined by the lowering of the binding arm 2. The small pulley 35 is appropriately set so that it can rotate several times due to the movement. In the rewinding means, the small pulley 35 is rotatably mounted on the support shaft 8 of the reel 6, as shown in FIG. 2, and a friction clutch 41 is interposed between the two.

The friction clutch 41 includes a pressure-receiving surface 42 provided on the end surface of the small pulley 35, a friction plate 43 slidably attached to the support shaft 8 in correspondence with the pressure-receiving surface 42, and a support shaft opposite the friction plate 43. Adjustment handle 44 screwed onto handle 8 and handle 4
4 and a spring 45 stretched between the friction plate 43, and the friction plate 43 is pressed against the pressure receiving surface 42 of the small pulley 35 by the spring force of the spring 45. Friction plate 4
3 and the pressure receiving surface 42 can be adjusted by turning the adjustment handle 44 to expand and contract the spring 45. Further, in the rewinding means, a one-way clutch 46 is interposed between the support shaft 8 and the roll 6, as shown in FIG.

The one-way clutch 46 transmits the rotation to the reel 6 when the support shaft 8 is driven counterclockwise in FIG. 2, and cuts off the transmission when the support shaft is rotated in the opposite direction. The one-way clutch is designed to transmit clockwise rotation of the reel to the shaft 8.

As shown in an enlarged view in FIG. 5, the tape rewinding means is used when pulling out the tape 7 when the binding arm 2 is raised.
A gap 47 is created between the sector gear 40 and the second gear 38 when the binding arm 2 is raised so that the binding arm 2 is inoperative.

Next, the operation of the binding device according to the present invention will be explained. In FIG. 2, bundle A is attached to arm end 1 of binding arm 2 in an upright state.
When the stretched tape 7 is pushed into the tape holding means 1 from 0, a gap 47 is created between the sector gear 40, which is one of the elements of the tape rewinding means, and the second gear 38.
occurs, and the connection between the binding arm 2 and the reel 6 is broken, so the reel 6 rotates freely and the tape 7 is fed out.

Next, when the handle 22 is operated to lower the binding arm 2, the rotational power transmission mechanism A of the rewinding means is activated, and the small pulley 35 is rotationally driven in the counterclockwise direction in FIG. . The rotation is then transmitted to the support shaft 8 via the friction clutch 41. At this time, since the one-way clutch 46 transmits the rotation of the support shaft 8 to the reel 6, the rotation of the small pulley 35 is transmitted from the support shaft 8 to the reel 6 via the one-way clutch 46. Therefore, the reel 6 rotates counterclockwise, and the slack in the tape 7 caused by the difference between the length of the tape 7 that had been pulled out from the arm end 10 and the winding circumference of the bundle A is quickly removed from the reel. 6 and the tape 7 is wound around the bundle A under tension. Once the tape 7 becomes taut, the reel 6 will no longer rotate counterclockwise due to the taut force. On the other hand, the small pulley 35 continues to rotate counterclockwise due to the tilting movement of the binding arm 2, but since the reel 6 does not rotate, the friction clutch 41 slips. That is, once the tape 7 is tensioned, the rotation of the small pulley 35 is absorbed by the slip between the friction plate 43 and the pressure receiving surface 42 of the friction clutch 41. At this time, an appropriate tensile force in the unwinding direction acts on the tape 7 due to the frictional force generated on the slip surface, and the bundle A is bound with an appropriate tightening force in accordance with the tensile force. Therefore, by adjusting the adjustment handle 44 of the friction clutch 41 to vary the frictional force, the tightening force of the bundle A can be adjusted as desired. Therefore, the effect is that the bundle A can be tied according to its stiffness.

Further, the amount of unwinding of the tape 7 is different between a bundle A with a large bundle A, that is, a bundle A with a large winding circumference, and a bundle A with a small bundle A, that is, a bundle A with a small winding circumference. However, once the tape 7 is tensed, the tension depends on the frictional force of the friction clutch 41, so the effect is that the bundle A can always be bound with a constant tension regardless of the size of the bundle A. play.

After tensioning the tape 7, when the binding arm 2 is further lowered,
As shown in FIG.
At the same time, the tape 7 guided by the guide roller 9 is clamped and fixed between the guide roller 9 and the tape support 16, and the pressing member 18 of the tape holding means 1 is pressed by the slope 30. The tape 7 is then pushed by the guide plate 23 between the holding surface 17 and the tape holding roller 20 pivotally connected to the pressing member 18 .

Then, when the handle 22 is operated, the handle 22 descends against the spring force around the shaft 21, thereby holding the tape 7 against the tape guide plate 23 as shown in FIG. The cut end 7b is cut between the surface 17 by the cutting blade 24, and the cut end 7b is pressed against the holding surface 17 by the brush 32 and stuck. Further, the binding portion 7a of the tape 7 is pushed down by the separation plate 31 and the concave portion 1 outside the tape holding means 1 is pressed down.
It is drawn out within 5. Next, when the force applied to the handle 22 is released and the binding arm 2 is raised by the spring force, the tape clamping roller 20 pivotally connected to the pressing member 18 is moved again to the holding surface 1.
7 side and clamps the cut end 7b of the tape 7, but since the binding part 7a of the tape 7 has been pulled out of the tape holding means 1, it will not be clamped there again.

- When the binding arm 2 is moved upward, the rotation transmission mechanism A of the unwinding means is activated, and the small pulley 35 is rotated clockwise in FIG. The signal is cut off and is not transmitted to the reel 6.

Therefore, the tape 7 due to unnecessary rotation of the reel 6
This can prevent tangling, etc. On the other hand, when the binding arm 2 is raised, a tensile force is applied to the tape 7 as the distance between the arm end 10 and the tape holding means 1 expands. Then, the reel 6 is rotated clockwise in FIG. 2 according to this tensile force, and the tape 7 is rotated clockwise in FIG.
will be extracted. According to the present invention, when the binding arm is in an upright position, the gear means linking the binding arm and the reel is disengaged so that the reel can freely rotate. When the object to be bound is brought into contact with the tape and pulled out when standing up, the load caused by the tilting movement of the binding arm can be reduced. This prevents the objects to be bound from being bent or damaged by the tape.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing one embodiment of the present invention. FIG. 2 is a front view of FIG. 1. FIGS. 3A, 3B and 3C are cross-sectional views showing the state of the binding operation of the main parts in FIG. 2, respectively. FIG. 4 is a sectional view of the friction clutch in FIG. 1. FIG. 5 is an enlarged front view of the main part of the present invention. 1...Tape holding means,...Rewinding means, A...Rotary power transmission mechanism,...Binding means,...Tape Separation means, 1... Machine base, 2... Binding arm, 6... Reel, 9, 9... Guide roller, 18...・Press member, 22...
Handle, 23...Tape guide plate, 24...
... Cutting blade, 41 ... Friction clutch, 46.
...One-way clutch, 47...Gap.

Claims (1)

[Claims] 1. Holding the end of the adhesive tape drawn out from a reel supported by a machine base through the arm end of a binding arm pivotally connected to the machine base, and raising and lowering the binding arm. A binding device for binding objects to be bound inserted between the binding arm and the machine base with the adhesive tape, the binding device being configured to rewind the tape onto the reel in conjunction with the tilting movement of the binding arm. gear means linking said binding arm and said reel such that said reel can rotate freely only when said binding arm is in an upright position; A binding device characterized in that it is provided to remove occlusion.