JP2002240804A - Tying apparatus for tying band - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tying apparatus for a tying band whose durability is improved by eliminating a clutch mechanism. SOLUTION: The tying apparatus includes a rolling section 74, a feeder, a fastener 76 and a driving mechanism for driving a cutting mechanism by power from a motor 1. The driving mechanism has a chain 13 driving mechanism which is driven by the power from the motor 1 and is structured to drive the rolling section 74 and the feeder by forward movement of a moving member 16 coupled with the chain 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a binding apparatus for automatically binding a group of linear bodies (hereinafter, referred to as binding objects) such as a plurality of cables and wires using a binding band. TECHNICAL FIELD The present invention relates to a tying device for a tying band capable of automatically and continuously feeding and tying a tying band made of a synthetic resin, tightening at the time of tying, and cutting an excess end portion.

[0002]

2. Description of the Related Art A conventional binding band used for winding and tightening a binding band around an object to be bound such as a wire harness of electric products, a pachinko machine, a wiring of a vending machine, etc. Are disclosed, for example, in Japanese Patent Publication No. 7-49839 and Japanese Patent Publication No. 2564650. However, the binding devices disclosed in these publications have a disadvantage that the structure and the driving mechanism are complicated and the manufacturing cost is high.

When the binding band is wound around the binding object and tightened, the binding object is arranged in a space formed between the jaw and the rotatable cover, and the cover is attached. By rotating to form a closed space, the binding band is guided on the inner surface of the cover to make the binding band into a loop shape, and then the leading end of the binding band is inserted into a locking hole formed in the head of the binding band. As shown in FIG.
However, at this time, simply tightening the tip of the binding band 60 requires only the binding band 60.
There is a disadvantage that a space 67 is formed between the tying object 66 and the tying object 66, and thus the tying object 66 is loosely bound.

Accordingly, the present applicant has disclosed in Japanese Patent Laid-Open Publication No. 2000-8
In Japanese Patent No. 5718, a binding device for a binding band capable of binding an object to be bound without a gap is provided.

[0005] In the binding device of the binding band, the winding portion of the binding band is composed of a kama arm having a base pivotally attached thereto and an open guide pivotally attached opposite to the kama arm. When the opening guide is opened after passing the tip of the band body through the locking hole of the binding band, the binding band is guided by the inner surface of the opening guide. Means for releasing from the inner surface of the

However, in this binding device, before the start, the tip of the band pushing bar is located near the head of the binding band, moves along the transfer path of the binding band, and moves to the head of the binding band. After the belt has been fed to the final position, the clutch of the drive mechanism is disengaged, and the band pushing bar is pulled back to the original position by the elastic restoring force of the return spring. Furthermore, when the binding band is sufficiently tightened by the tightening gear, the cutter arm moves to the through hole side by swinging the tightening arm, and the excess portion of the band body is cut by the cutter, and then the operation is performed. When the lever is operated to open the open guide, the clutch mechanism is operated to return the cutter holder to the original position.

As described above, since the drive timing of each member is controlled by the clutch mechanism, the structure is complicated, the durability is somewhat poor, and there is room for improvement.

[0008]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned drawbacks, and an object of the present invention is to eliminate the clutch mechanism to simplify the structure and improve the durability. To provide a binding device for a binding band.

Still another object of the present invention is to provide a tying device for a tying band, which has a simpler structure and a simpler driving mechanism than conventional ones, has less trouble, and has a low manufacturing cost.

[0010]

A binding device for a binding band according to the present invention includes a head having a locking hole in which a locking portion is formed on an inner surface, and a band body extending from the head. A locking claw engaged with the locking portion when the band main body is inserted into the locking hole, the locking claw being provided on the band main body; Has been
A winding portion for winding the binding band around the outer periphery of the binding target object, and a leading end portion of the band main body being inserted into the locking hole; a feeding portion for feeding the binding band into the winding portion; A tightening portion for tightening the binding band wound around the object, a cutting mechanism for cutting off an excess portion of the band main body after the fastening of the binding band is completed, and cutting the winding portion, the feeding portion, the fastening portion, and the like A drive mechanism for driving the mechanism with power from a motor, the drive mechanism having a chain drive mechanism driven by power from the motor, and moving a moving member connected to the chain forward. Thus, the winding section and the feeding section are driven to thereby achieve the above object.

[0011] In a preferred aspect of the present invention, the winding portion includes a kama arm having a base pivotally attached thereto and an open guide pivotally attached to the base arm so as to face the kama arm. As the moving member moves forward of the binding device, the kama arm interlocking arm linked to the kama arm is driven, and the open guide operation cam linked to the open guide is driven.

[0012] In a preferred aspect of the present invention, the feeding portion is moved with the moving member moving forward of the binding device.
It has a band pushing bar which pushes the head of the binding band forward, and the binding band pushed into the winding portion by the band pushing bar bends along the inner surface of the winding portion to form a loop.

In a preferred embodiment of the present invention, the open guide has an open guide base rotatably fixed to a front end of the binding device, and a tip end pivotally connected to the open guide base. , And the tip is urged forward and provided with a stopper for restricting forward movement.

In a preferred embodiment of the present invention, the power from the motor is transmitted via a reduction and safety clutch mechanism using a planetary gear.

According to a sixth aspect of the present invention, there is provided the binding device for a binding band, wherein a case is provided for accommodating a surplus portion of the band body cut off by the cutting mechanism.
A discharge port is formed at the lower end of the case, and a lid for opening and closing the discharge port is pivotally attached to the lower end of the case so as to be openable and closable.

In a preferred embodiment of the present invention, a spring is provided for urging the lid in a direction to close the discharge port, and a lever is provided outside the lid.

The operation of the present invention is as follows.

The drive mechanism has a chain drive mechanism driven by power from a motor, and is configured to drive the winding portion and the feed portion by moving a moving member connected to the chain forward. By having
In one cycle of the chain, the feeding section feeds the band to the winding section, the winding section winds the binding band wound around the object to be bound by the fastening section, and then cuts the excess portion of the binding band body by the cutting mechanism. The work of cutting off can be performed.

Therefore, unlike the related art, there is no need to provide a clutch mechanism, so that there are few failures and the durability is improved.

[0020]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a binding device for a binding band according to the present invention.

The binding band 6 used in the binding device of the present invention
0 has a head 64 having a locking hole 63 in which a locking portion is formed on the inner surface, and a band main body 61 extending from the head 64, as shown in FIG. A locking claw that is engaged with the locking portion when the locking member is inserted into the locking hole 63 is provided on the band main body 61. Such a binding band 60 can be easily formed by an injection mold.

As shown in FIG. 1, the binding device 10 of the binding band has a handy type external shape with a housing 70 formed by processing a synthetic resin, metal, or the like. Part 71
, An operating lever 27, and a winding part 74 having a substantially U-shaped (in an open state) insertion space 72 provided at the distal end of the housing 70. By operating the operating lever 27 after setting the band 60 in the binding device 10, the band 60 can be bound around the binding object by the winding unit 74.

The binding device 10 of the binding band winds the binding band 60 disposed around the space around the outer periphery of the binding object 66 and inserts the band main body 61 into the locking hole 63 to form a loop. A winding portion 74, a feeding portion 75 for feeding the binding band 60 to the winding portion 74, a fastening portion 76 for fastening the binding band 60 wound around the binding object 66 by the winding portion 74, and a binding band 60. Cutting mechanism 7 for cutting off an excess portion of the band main body 61 after the tightening of the
7, the winding part 74, the feeding part 75, and the fastening part 7.
6 and a driving mechanism for driving a driving member constituting the cutting mechanism 77 by the rotational force of the motor 1.

The operating lever 27 is provided on the grip 71.
And an operation switch 79 are provided. The switch 79 turns on and off the motor 1 housed in the lower portion of the grip 71 and drives the drive mechanism 78.
9 is a power switch in the figure.

The configuration of each section described below will be described sequentially.

As shown in FIGS. 1 to 5, a speed reducer 41 is connected to a drive shaft 2 connected to a motor 1, and an output shaft from the speed reducer 41 has a vertical axis / horizontal axis exchangeable helical gear 5 connected thereto.
0 is fixed.

As shown in FIG. 11, the speed reducer 41 has a planetary gear 43 and a safety switch 44 disposed in a case 42, so that when the output shaft is overloaded or locked. Are configured such that the safety switch 44 is activated. That is, the planetary gear 43 includes a joint gear 45 connected to the drive shaft 2 from the motor 1,
An inner ring 46, an outer ring 47, and an elastic member 48 made of a spring or rubber. When an overload occurs and the inner ring is locked, the outer ring 47 rotates and the elastic member 48 moves in the direction of the arrow, thereby fixing the outer ring fixing claw. Moves and switches off.

The first gear 11 of the chain drive mechanism is connected to the helical gear 50. The second gear 12 of the chain drive mechanism is disposed at the distal end of the binding device 10 and
The chain 13 is wound between the gear 11 and the second gear 12, and the chain 13 and the second gear 12 are driven as the first gear 11 rotates. The second gear 12 has first and second gears 81 and 82 of a fastening portion 76 described later.
Are meshed via the intermediate gear 14.

The base of a moving member 16 is connected to the chain 13, and one of the connecting members of the chain 13 is configured as an operation cam 17.

A band pushing spring holder 31 is arranged above the binding device 10, and a band pushing bar 32 is arranged at the tip end side of the band pushing spring holder 31. A spring 33 is mounted around the band pushing spring holder 31, and urges the band pushing bar 32 toward the rear side of the binding device 10. When the moving member 16 moves forward along with the driving of the chain 13, the spring 33 and the band pushing bar 32 are pushed forward to move, and as a result, the band set on the binding 60 is moved to the front side of the apparatus, and guided to the winding section 74 to be wound in a loop. Before the start, the leading end of the band pushing bar 32 is located near the head of the binding band 60, moves along the transfer path of the binding band 60, and sends the head of the binding band 60 to the final position.

Further, on the front side of the binding device 10,
A kama arm operation bar 19 is disposed so as to be movable in the front-rear direction, and first to third kama arm interlocking arms 24 to 26 are connected to the kama arm operation bar 19. The third kama arm interlocking arm 26 is connected to a kama arm 22 which will be described later.
Rotates. That is, as shown in FIG.
6 moves forward, the pawl 21 of the band pushing spring holder 20 presses the kama arm operation bar 19, and the movement is transmitted to the first to third kama arm interlocking arms 24 to 26, and the kama arm 22 is pivoted. It turns around P1 as a fulcrum.

An open guide operating cam 35 is disposed further forward of the binding device 10, and the operating cam 17 of the chain 13 is connected to the open guide operating cam 3.
When the user presses 5, the open guide 23 that has been opened is closed, and the cutter holder 29 is simultaneously pressed.

When the moving member 16 is moved rearward by driving the chain 13 after the operation of the cam arm 22, the open guide return pawl 28 provided on the cam arm interlocking arm 24 causes the open guide operation cam 18 to move.
And the open guide 23 is opened.

As shown in FIG. 4, a tightening arm 83 constituting the tightening portion 76 is pivotally attached to the first shaft 7.
A first tightening gear 8 is provided at the distal end of the tightening arm 83.
The first and second tightening gears 82 are connected. An engagement portion 84 is formed at the rear end of the tightening arm 83, and a protrusion 87 of the tension arm that can move in the front-rear direction.
Are engaged. Further, a tension spring 88 and a tension adjusting screw 89 for urging the rear end of the tightening arm 83 upward are provided, and the first and second band winding gears 81 and 82 at the distal end of the tightening arm 83 are always lowered. Pressing elastically.

As shown in FIG. 14, an elongated cutter port 3 is provided.
The cutter 30 having Oa is disposed movably in the front-rear direction in the distal end portion of the binding device, and is urged rearward by a spring 67. Then, the cutter holder 29 holding the cutter 30 is moved forward by the forward movement of the operating cam 17, and the cutter 30 is set at a predetermined position.

As shown in FIG. 5, the winding part 74 includes a jaw 68 fixed to a tip end of a housing 70, and a jaw 68
Arm 27 pivotally mounted on a shaft P1 having a base mounted on the housing 70, and a pivot 7
And an open guide 23 pivotally mounted on the opening guide 23.

The semicircular guide groove for guiding the band body 61 is provided on the inner periphery of the jaw 68 because the kama arm 22 is arranged slightly concave in the jaw 68.

The base of the kama arm 22 is connected to a kama arm connecting arm 26 connected to the first shaft P1, and is driven to rotate at a predetermined time by an intermediate member by the driving mechanism.

The open guide 23 is, as shown in FIG. 4, an open guide base 2 rotatably connected to the shaft 7.
3a and a tip 2 pivotally connected to the base 23a
3b. The distal end portion 23b is urged in a direction to rotate forward by a safety spring, and is locked at a predetermined position by a locking pin 54 coming into contact with an engaging portion 53 provided on the base portion 23a. Therefore, if an obstacle is caught between the tip 23b of the open guide 23 and the jaw (cam arm holder) 68, the open guide 2
When the open guide 23 forms a loop, if there is an obstacle such as a finger or an electric wire, a spring works to prevent injury and mechanical failure.

On the inner surface of the open guide 23, a guide groove 97 for passing the binding band 60 is provided.

A through hole 98 through which the band body 61 can pass is formed below the open guide 23, and the pair of tightening gears 81 and 82 are disposed below the through hole 98. In addition, a binding band 60 is provided at the tip end side of the through hole 98.
Is provided with a projection 99 that can lock the head 64.

The opening 30a of the cutter 30 is connected to the through hole 9 described above.
8 is located. The binding band 60 passing through the through hole 98
Is cut from the side by the cutter 30.

Next, the binding device 10 of the binding band of the present invention.
Will be described.

When the power switch 9 is turned on, the binding band 6
0 is set at a predetermined position, and then, as shown in FIG. 7, when the binding target 66 such as a wire harness is inserted into the space 72 of the open guide 23 and the operating lever 27 is pulled, the motor 1 starts, and The helical gear 50 rotates and the first and second drive gears 11 and 12 rotate, and the chain 13 is driven.

As the chain 13 is driven, the moving member 1
6 moves toward the front of the binding device 10, the pressing portion 16 a formed at the upper end of the moving member 16 moves forward of the binding device 10 with the claw 21 of the band pushing spring holder 31 locked. Move. Then, the band 60
Is pushed into the winding portion 74 by the band pushing bar 32.

When the binding band 60 reaches the winding portion 74,
As shown in FIG. 8, the head 64 of the binding band 60 is
8, the band guide 61 is engaged with the protrusion 99, and the open guide 23 is hung over the jaw 68, so that the band main body 61 is looped while being guided by the guide groove 97, and the tip of the band main body 61 is engaged. It is inserted through the through hole 98 and the cutter port 30a through the stop hole 63.

After the binding band 60 has formed a loop in this manner, the kama arm operating bar 19 is
As shown in FIG. 9, the kama arm interlocking arms 24-26 cooperate to drive the kama arm 22 to pinch the binding object 66 between the open guide 23 and the tip of the binding band 60 as shown in FIG. It is sent between the pair of tightening gears 81 and 82 through the through hole 98. Then, the open guide 23 is released at the same time as the distal end of the binding band 60 starts to be tightened downward by the rollers 81 ′ and 82 ′ connected to the pair of tightening gears (FIG. 10).

By releasing the open guide 23, the binding object 66 bound by the binding band 60 moves slightly to the open guide 23 side, so that the binding object 66 is wound around the binding object 66 by the binding band 60 without a gap. Will be able to turn. In other words, the open guide 23 opens before the tightening is completed, fits in the shape of the binding target object 66 and is in a free state, and exerts a complete tightening force.

When the binding band 60 is sufficiently tightened by the rollers 81 'and 82', the tightening arm 83 rises upward as shown in FIG. Since the engagement portion 84 at the rear end of the arm 83 is lowered by swinging, the engagement with the cutter holder 29 is released, and the cutter spring 29 is pulled back to the rear of the binding device 10 by a return spring, and the cutter port is opened. The surplus portion of the band main body 61 is cut by the cutter 30 as the 30a crosses the band main body 61.

Thereafter, as the moving member 16 moves rearward with the movement of the chain 13, the cam arm operating bar moves rearward, the cam arm 22 returns to the original state, and is opened by the open guide return pawl. Move the guide lock claw upward to lock.

By adjusting the tension adjusting screw 89, the band tightening gear 81 of the tightening arm 83,
Since the rising force of 82 can be adjusted, the tightening force of band 60 on binding object 66 can be adjusted.

As shown in FIGS. 12 and 13, by moving the tongue piece 56 of the guide rail lid 55 back and forth, the cut length of the band 60 is left 1 mm,
m and the like can be selected. An entrance 57 through which the band 60 passes is formed in the guide rail lid 55, and the tongue piece 56 has a hole 5 at a position corresponding to the through hole 98.
9 are formed.

The binding band 60 may be an embodiment in which the tip of the head 64 of the band body 61 is connected to the tip of the band body 61 of another binding band. In this case, a mechanism for cutting between the binding bands 60 arranged in front and behind is provided.

FIG. 17 shows an example in which a case 100 is provided for accommodating a surplus portion of the band body cut off by the cutting mechanism.

The case 100 is formed in a substantially cylindrical shape by a transparent plastic molded product, and the upper end thereof is fixed to a lower position of the tip of the apparatus (for example, fixed at two places on one side with screws). ), A discharge port 101 is formed at the lower end of the case 100. The case 100 is slightly inclined so that the discharge port 101 faces the operation lever 27 side. The lid 102 that opens and closes the outlet 101 is the case 1
00 is pivotally attached to the lower end of the cover 1 and a lid 1
02 urges the outlet 101 in the closing direction. A lever 103 protrudes outside the lid 102, and the lever 103 can be operated with one hand holding the grip 71. In other words, in the conventional device, when the chips of the band accumulated in the case 100 are discarded, it is necessary to tilt and discard both hands or the device. 103 can be drawn, and the chips of the band can be easily discarded.

[0056]

According to the present invention, in one cycle of the chain, from the feeding of the binding band to the winding around the binding object,
Since the tightening operation and the operation of cutting off the surplus portion of the binding band main body can be performed, there is no need to provide a clutch mechanism as in the related art, and the number of failures is reduced and the durability is improved. Further, the structure and mechanism are simplified, and the device can be manufactured at low cost.

[Brief description of the drawings]

FIG. 1 is a sectional view of an embodiment of a binding device of a binding band of the present invention.

FIG. 2 is a sectional view of a main part of the binding device shown in FIG.

FIG. 3 is a sectional view of a main part of the binding device shown in FIG. 1;

FIG. 4 is a sectional view of a main part of the binding device shown in FIG. 1;

FIG. 5 is a sectional view of an essential part of the binding device shown in FIG. 1;

FIG. 6 is an operation explanatory view of the binding device shown in FIG. 1 and shows a state in which a binding object is arranged between a jaw and an open guide.

FIG. 7 is an operation explanatory view of the binding device shown in FIG. 1, showing a state in which a binding object is held between a jaw and an open guide and a loop is formed by a binding band.

8 is an operation explanatory view of the binding device shown in FIG. 1, showing a state in which a distal end portion of a band main body is tightened between tightening gears.

9 is an operation explanatory view of the binding device shown in FIG. 1, showing a state where an open guide is opened.

10 is an operation explanatory view of the binding device shown in FIG. 1,
The state where the surplus part of the band part main body is cut by the cutter is shown.

FIG. 11 is a plan view of the speed reduction mechanism.

FIG. 12 is a plan view of a guide rail cover.

FIG. 13 is a front view of a guide rail cover.

FIG. 14 is an operation explanatory view showing a state of passing through a band.

FIG. 15 is a partially cutaway front view of the binding band.

FIG. 16 is a front view showing a state in which a binding object is bound by a binding band using a conventional device.

FIG. 17 is a side view of another embodiment of the binding device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Motor 2 Drive shaft 10 Bundling device 13 Chain 22 Kama arm 23 Open guide 27 Operating lever 30 Cutter

Claims (7)

[Claims] 1. A head having a locking portion having a locking hole formed on an inner surface thereof, and a band body extending from the head.
A locking claw, which is engaged with the locking portion when the band main body is inserted into the locking hole, is a binding device for a binding band provided on the band main body, and is provided at a distal end portion of the binding device. A winding unit that winds the binding band around the outer periphery of the binding object, and inserts the tip of the band main body into the locking hole; a feeding unit that feeds the binding band into the winding unit; A fastening portion for fastening the binding band wound around the binding object; a cutting mechanism for cutting off an excess portion of the band body after the fastening of the binding band is completed; the winding portion, the feeding portion, and the fastening portion And a drive mechanism for driving the cutting mechanism with power from a motor, the drive mechanism having a chain drive mechanism driven by power from the motor, and forward of a moving member connected to the chain. By moving Binding device of the binding band which is configured to drive the rotating part and infeed. 2. The winding member includes a kama arm having a base pivotally attached to the base, and an open guide pivotally attached to the base to oppose the kama arm. The binding device for a binding band according to claim 1, wherein the binding arm linked to the kama arm is driven as the binding device moves forward, and the open guide operating cam linked to the open guide is driven. 3. The feeding section has a band pushing bar for pushing the head of the binding band forward as the moving member moves forward of the binding device, and is pushed into the winding section by the band pushing bar. The binding device for a binding band according to claim 1 or 2, wherein the formed binding band bends along the inner surface of the winding portion to form a loop. 4. The open guide has an open guide base rotatably fixed to a front end of the binding device, and a tip rotatably pivotally attached to the open guide base. 4. The front end portion is urged forward and is provided with a stopper for restricting forward movement.
A binding device for a binding band according to any one of the above. 5. The binding device for a binding band according to claim 1, wherein the power from the motor is transmitted through a deceleration using a planetary gear and a safety clutch mechanism. 6. A head having a locking hole in which a locking portion is formed on an inner surface, and a band body extending from the head.
A locking claw, which is engaged with the locking portion when the band main body is inserted into the locking hole, is a binding device for a binding band provided on the band main body, and is provided at a distal end portion of the binding device. A winding unit that winds the binding band around the outer periphery of the binding object, and inserts the tip of the band main body into the locking hole; a feeding unit that feeds the binding band into the winding unit; A fastening portion for fastening the binding band wound around the binding object; a cutting mechanism for cutting off an excess portion of the band body after the fastening of the binding band is completed; the winding portion, the feeding portion, and the fastening portion And a drive mechanism for driving the cutting mechanism with power from a motor, a case is provided for accommodating an excess portion of the band body cut off by the cutting mechanism, and a discharge port is formed at a lower end portion of the case. Along with Binding device of the binding band which lid for opening and closing the discharge port is pivotally attached to the case bottom. 7. The binding device for a binding band according to claim 6, wherein a spring is provided for urging the lid in a direction to close the discharge port, and a lever is provided outside the lid.