JPH0468210B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a binding device that facilitates the pulling out of tapes using the pressing force of objects to be bound.

(Prior art) When binding objects using a binding machine that has binding arms that are movable up and down on a base, the binding tape that has been pulled out from the tip of the binding arm is first attached to the objects. After pressing and pulling out the necessary length of tape further, the binding arm is tilted to bind the objects to be bound. Further, in order to obtain an appropriate binding tightening force, the tape reel is designed to be rotated in the unwinding direction during the process of tilting the binding arm.

Early tying machines focused on the tying force. Therefore, a one-way rotation transmission clutch was used to rotate the tape reel in the rewinding direction when the binding arm was tilted, so the rotation of the tape reel in the tape withdrawal direction was regulated by the one-way rotation transmission clutch. It was difficult to push the tape pulled out from the tip of the binding arm with the object to be tied and pull out the tape further.

Therefore, as an improvement on the conventional binding device, for example, the binding disclosed in Japanese Unexamined Patent Publication No. 57-37518 attaches a tape reel to the support shaft of a binding arm provided on a base, and also attaches a driven wheel and a gear. A recess is provided in the side surface of the driven wheel, and a pin that fits into the recess is projected from the side surface of the gear. A sector gear is fixed to the binding arm support shaft, and the rotation of the sector gear rotated by the activation movement of the binding arm is transmitted to the gear via a gear mechanism. Further, the engagement between the recess provided in the driven wheel and the pin protruding from the side surface of the gear is achieved by sliding the driven wheel relative to the shaft using an arm member that is moved by a cam mechanism.

In this conventional binding machine, when pulling out the tape while pushing the tape pulled out from the tip of the binding arm during the initial stage of binding, the recesses provided in the vertical and horizontal wheels and the pin protruding from the side of the gear are engaged. The connection is released, the tape reel can be rotated with a light force, and the tape is pulled out by the pressing force of the object to be bound. Next, when the binding arm is tilted, the arm member is moved by the cam mechanism and the driven wheel is also moved, and the recess provided in the driven wheel engages with the pin protruding from the side of the gear, and the tape reel is rewound. It is designed so that it can be rotated in any direction.

(Problems to be Solved by the Invention) In the above-mentioned conventional binding machine, the purpose has been achieved to some extent by engaging the pin protruding from the side of the gear in the recess provided in the driven wheel, but the following problem arises. There are some points that need improvement. In other words, when the binding arm is upright and the tape being pulled out from the tip of the binding arm is pushed by the object to be bound and the tape reel is rotated to pull out the tape, the driven wheel also rotates as the tape reel rotates. . Since the length of the tape to be pulled out from the object to be bound is extremely arbitrary, the rotation of the driven wheel is also arbitrary and its rotation angle is not constant. If the rotation angle of the driven wheel is not constant as described above, there is a problem in that the engagement position between the recess provided in the driven wheel and the pin protruding from the side surface of the gear is shifted, making it difficult to engage the two.

In addition, in order to solve this problem, if the recess is made larger than the pin to loosen the engagement between the two, it will not be possible to obtain sufficient rotation of the tape reel in the unwinding direction, and There is a problem in that it is not possible to obtain a binding tightening force.

The present invention provides a binding device that rotates a tape reel at a predetermined rotation angle even when the tape is pulled out to an arbitrary length from an object to be bound.

(Means for Solving the Problems) The means according to the present invention for solving the above problems is such that a binding arm is provided on a frame provided on a base so as to be movable up and down, and a tape reel is pivotally supported behind the binding arm. , a shaft is provided on the frame located approximately midway between the tape reel and the binding arm, the rotation transmission gear and the pawl gear are supported on the shaft by the same bearing member, and the driven gear and the support plate are supported by the same bearing member. an engaging pawl is connected with a pin to the tip of the support plate, the tip of the engaging pawl engages with the pawl gear, and is rotatably supported on the support shaft of the binding arm, so that the driven A drive gear that meshes with the gear is provided, an engagement plate is rotatably supported on a guide pin provided on a side surface of the binding arm, and an engagement portion that engages with a roller provided on the side surface of the drive plate is formed on the engagement plate. A tape reel gear meshing with the rotation transmission gear is provided on a shaft supporting the tape reel, and an engagement release pin is provided at a position where the binding arm contacts the engagement claw when the binding arm is in an upright state. It is characterized by being attached to the frame.

(Function) Since the present invention is configured in this way, when the binding arm is upright, the engagement claw is pushed by the engagement claw release pin and is released from the claw gear, so that the tape The reels are freely rotatable. Thereby, the tape being pulled out from the tip of the binding arm can be pulled out to an arbitrary length by the pressing force of the object to be bound. Next, when the binding arm is tilted, the driving gear is rotated by the engagement plate and rotates the driven gear, whereby the engagement pawl is separated from the disengagement pin and engaged with the pawl gear. Due to the engagement between the engagement pawl and the pawl gear, the rotation is transmitted to the rotation transmission gear.
The tape reel gear meshed with this rotation transmission gear is rotated, and the tape reel is rotated in the tape rewinding direction.

(Example) An example of the present invention will be described below. 1st
In the figures and FIG. 3, a frame 2 is erected on a base 1. As shown in FIG. This frame 2 is provided with a fixed shaft 5, and the binding arm 4 is provided so as to be movable up and down using this fixed shaft 5 as a fulcrum.A shaft 8 is provided on the rear side of the frame 2, and this shaft 8 has a bearing 9. A tape reel 10 is attached via the tape reel 10, and a tape reel gear 11 is further fixed. A shaft 80 is fixed to the frame 2 approximately midway between the shaft 8 and the fixed shaft 5. The fixed shaft 5 has a rotation regulating protrusion 84 at its base end.
A fan-shaped drive gear 59 having a shape formed therein is rotatably supported. The binding arm 4 is provided with a guide roller 62 that moves within a long hole 61 provided in the frame 2, and an engagement plate 66 is provided on the shaft of this guide roller 62 so as to be swingable. The engagement plate 66 has a concave shape and has an engagement portion 68 formed at its tip so as to engage with a roller 72 supported by a shaft 71 provided on the side surface of the drive gear 59. . A pin 69 is provided upright on the engagement plate 66, and a tension spring 70 is provided between the pin 69 and the fixed shaft 5. A stopper 63 is rotatably provided on the fixed shaft 5, and is adapted to tension the slope of the engagement surface 65 that the side surface 67 of the engagement plate 66 comes into contact with, so that the adjusted engagement surface 65 is attached to the frame 2. bolt 6
It is designed to be fixed at 4. Next, as shown in FIG. 3, two cylindrical bodies 78 and 79 are provided on the shaft 80 so as to be rotatable with respect to the shaft 80.
6 is fixed, while the rotation transmission gear 7 is fixed to the cylindrical body 79.
3 and a pawl gear 74 are fixed. The support plate 76 is bent into a substantially L-shape (see FIG. 1), and an engagement pawl 77 is connected to the tip of the support plate 76 by a pin 81. A spring 82 is attached to this engaging claw 77, and the claw 77a of the engaging claw 77 is connected to the claw gear 7.
It is constantly pressed against the claw 74a of No. 4. The rotation transmission means 60 is configured in this way. As shown in FIG. 1, when the binding arm 4 is in an upright state, the rear end of the engaging claw 77 comes into contact with the engaging claw 77, and the engaging claw 77 rotates around the pin 81, causing the claw 77a to engage the claw of the claw gear 74. An engagement release pin 83 is provided on the frame 2 at a position separated from the engagement release pin 74a. A tape reel gear 11 is fixed to the shaft 8.
1 is meshed with the rotation transmission gear 73.

Next, the tape holding device 3 will be explained. As shown in FIG. The rocking plate 15 is supported by a shaft 18. A shaft 19 is fixed to the free end of the rocking plate 15, and a rotating body 16 in the shape of a cylinder or a polygonal cylinder is mounted on the shaft 19. is pivoted. A torsion coil spring 20 is attached to the shaft 18, and one end of this torsion coil spring 20 is attached to the upright plate 1.
4, and the other end abuts on a shaft 21 that spans the swing plate 15, so that the swing plate 15 is given an elastic force in the direction of arrow C in FIG. Pressure receiving plate 17
is fixed to the upright plate 14, and this pressure receiving plate 17
are made of rubber, plastic, metal, etc. A rotating body 16 is mounted on the upright plate 14.
A holding member 22 is provided which cooperates with the holding member 22 to hold the cut end portion 13a of the binding tape. The upper end portion of this holding member 22 is a curved portion 22a. A tape relief plate 2 is provided between the holding member 22 and the pressure receiving plate 17.
3 is said to be a space that moves up and down. A shaft 24 is locked to the swing plate 15, and a tape release plate 23 is attached to the shaft 24, and the tape release plate 23 moves up and down as the swing plate 15 swings. A plurality of clamping surfaces 25 are formed on the outer periphery of the rotating body 16, which is formed in the shape of a cylinder or a polygonal cylinder. A thin groove (not shown) is formed on the surface of each clamping surface 25 to reduce the
An appropriate number of indentations are made in the direction parallel to the axial direction.
An engagement recess 26 is formed between the clamping surfaces 25 and the clamping surfaces 25 to engage with the curved portion 22a. Rotating body 16
is rotated in the direction of arrow D in FIG. 2 by a guide roller 27, which will be described later. The swing plate 15 includes a reversal prevention means for preventing the rotating body 16 from rotating in a direction opposite to the direction in which the binding tape is fed out, and a rotation angle regulating means for regulating the angle of the rotating body 16 in the direction in which the binding tape is fed out. It is provided. The reverse rotation prevention means is generally composed of a claw plate 28 and a reverse rotation prevention plate 29, as shown in FIGS. 7 and 8. The anti-reverse plate 29 is integrally attached to the rotating body 16 so that it can rotate together with the shaft 19.
It is rotatably installed. Also, reverse rotation prevention plate 2
Reference numeral 9 has engaging portions 29a, and the number of engaging portions 29a is the same as the number of engaging recesses 26 formed in the outer peripheral portion of the rotating body 16. The claw plate 28 is swingably mounted on the shaft 21, and a torsion coil spring 30 attached to the shaft 21 applies an elastic force in a direction in which the tip 28a of the claw plate comes into contact with the engaging portion 29. There is. This reversal prevention means prevents the rotating body 16 from rotating in the direction opposite to the direction of arrow D in FIG. As shown in FIG. 8, the rotation angle regulating means is roughly composed of an arcuate pawl 31 and an angle regulating plate 32. This angle regulating plate 32 is connected to the rotating body 16 in the same way as the reversal prevention plate 29.
It is rotatably attached to the shaft 19 so that it can rotate integrally with the rotation prevention plate 29, and has the same configuration as the reverse rotation prevention plate 29. The angle regulating plate 32 and the reverse rotation preventing plate 29 are attached to both ends of the rotating body 16 in the axial direction in close contact with each other, and their engaging portions 32a and 29a face in opposite directions. The arcuate pawl 31 is swingably provided on the shaft 21, and a pawl 33 is formed at one end 31a, as shown in FIG. A torsion coil spring 34 is attached to the shaft 21 as shown in FIG.
The other end 34b is in contact with the shaft 18. The arcuate pawl 31 is given an elastic force by a torsion coil spring 34 so that the pawl 33 comes into contact with the engaging portion 32a of the angle regulating plate 32, and the rotating body 1
6 cooperates with the guide roller 27 to feed out the binding tape, the other end 31b of the arcuate claw 31 is attached to the clamping member 22 as shown in FIG. Claw 3 in contact
3 is prevented from coming into contact with the engaging portion 29a. When the binding tape is not fed out, that is, when the binding tape is cut, the other end 31
When b separates from the holding member 22, the claw 33
The rotating body 16 is brought into engagement contact with the engaging portion 32a.
stops rotating, making it easier to cut the binding tape.

A shaft 36 is fixed to the free end 6 of the binding arm 4. A swing plate 37 and a swing plate 38 are swingably provided on the shaft 36, a pin 39 is fixed to the swing plate 37, and the guide roller 27 is rotatably mounted on the pin 39. ing. A meandering prevention roller 40 and an auxiliary roller 41 are provided at the free end of the swing plate 38 . A torsion coil spring 42 is attached to the shaft 36, and one end portion 4 of the torsion coil spring 42 is attached to the shaft 36.
2a is brought into contact with a locking pin 43 protruding from the free end 6, and the other end 42b is brought into contact with a cut-and-raised portion 38a formed on the rocking plate 38, so that the rocking plate 38
The torsion coil spring 42 applies an elastic force in the direction of arrow E in FIG.
A rotating shaft 45 of an auxiliary roller 41 is in contact with the swing plate 37, and an elastic force is indirectly applied to the swing plate 37 in the direction of arrow E by a torsion coil spring 42. Note that the swing plate 38,
Meandering prevention roller 4 rotatably supported by this
0. The present binding device can be configured without providing the auxiliary roller 41. The crimp cutting mechanism 7 includes a cutting blade 46, a support frame 47, and a crimp plate 4 as a reciprocating plate.
8 and a gap closing plate 47 as a reciprocating plate. A holder 50 is attached to the free end 6, and the cutting blade 46 is removably attached to the holder 50. The binding arm 4 is provided with a guide roller 51, the rocking plate 37 is provided with a guide roller 52, and the tip portion 13 of the binding tape is provided with a guide roller 51, a guide roller 52, a meandering prevention roller 40, and an auxiliary roller 41. , and are guided via guide rollers 27. The support frame 47 is a U-shaped frame body, and has a crimp plate 48 and a gap closing plate 4.
9 is provided on this support frame 47 so as to be reciprocatable. The gap-closing plate 49 here is composed of an upper plate 53 and a lower plate 54. A spring (not shown) is attached to the upper plate 53, and the gap-closing plate 49 is moved downward by the elastic force of the spring. has been granted. A via portion 55 for the binding tape 12 is provided on the top of the pressure bonding plate 48, and the via portion 55 is here constituted by a via roller 56 and a support shaft 57 that pivotally supports the via roller 56. The pressure bonding plate 48 is given downward elastic force by a spring (not shown), and the binding tape 12 is wound by the above-mentioned binding tape rewinding mechanism in conjunction with the raising and lowering of the binding arm 4. It is adapted to be rewound in the return direction, and the guide roller 5
1 is disposed below the passing roller 56 of the pressure bonding plate 48, and the pressure bonding plate 48 is pushed toward the pressure receiving plate 17 by the tension of the binding tape.

FIG. 2 shows that after the object to be bound 58 is brought into contact with the tip portion 13 of the binding tape and the binding tape is pulled out,
13 is a diagram showing a state in which the winding ends 13b and 13c of the binding tape tension-wound around the object to be bound 58 are crimped by tilting the binding arm 4, and the winding end 1
3b and 13c are pressed together by the pressure bonding plate 48 and the pressure receiving plate 17, and the guide roller 27 and the rotating body 1
6, a part of the leading end portion 13 of the binding tape is held between them. The binding tape is rewound onto the tape reel 10 by the binding tape unwinding means during the process from the upright state of the binding arm 4 to the state shown in FIG. Since the tape passes through the upper and lower parts of the crimp plate 48, the tension of the binding tape that tries to lift the crimp plate 48 and the crimp plate 4
The tension force of the binding tape that tries to push down the crimping plate 48 is canceled out, and the elastic force of the spring (not shown) acts on the pressure bonding plate 48 in the direction of pushing it down.
Even if the object 58 to be bound is so large that its head is located at a higher position above the pressure receiving plate 17, both winding ends 13b and 13c of the binding tape can be reliably crimped, and the object 58 to be bound can be securely crimped. It is possible to securely bind the parts.

The state shown in FIG. 5 is the state immediately before the binding arm 4 is further tilted to cut the binding tape tensioned around the object 58, and the swing plate 15 is in the position where the guide roller 2
The cut end portion 13a of the binding tape is opened by the swinging of the swinging plate 15. The rotating body 16 is then rotated in the direction of arrow D by the guide roller 27 to feed out the binding tape, and when the rotating body 16 rotates at a predetermined angle,
When the claw 33 engages with the engaging portion 32a and the rotating body 16 rotates by a predetermined angle, the claw 33 engages with the engaging portion 32a, and the rotation of the rotating body 16 in the binding tape feeding direction is stopped. It's becoming like that. When the binding arm 4 is further tilted, the rocking plate 15 is rocked in a direction away from the holding member 22 while the rotating body 16 is stopped rotating. As the swing plate 15 swings, the tape relief plate 23 rises as shown in FIGS. 5 and 6, and the guide roller 27 and rotating body 16
The winding end portions 13b, 13 are crimped by the crimping plate 48 and the pressure receiving plate 17 from the sandwiched portions.
Tension is applied to the tape tensioned part between c.
At the time when this tension is applied, this tape tensioned portion is cut by the cutting blade 46.

Next, the one shown in FIG. 9 is a modification of the binding device, and has a configuration in which a rotating roller 86 is supported on the pressure bonding plate 48. According to this, it is possible to prevent the so-called curling phenomenon that occurs at the cut end of the tape 12 after the tape 12 is cut. 0 and 11, the pressure bonding plate 48 is provided with a leaf spring 87 that curves downward. The leaf spring 87 presses against the so-called curling phenomenon of the cut end of the tape that occurs when cutting a tense tape, thereby ensuring that the cut end of the tape is held securely.

The operation of this embodiment configured as above will be explained next. In FIG. 1, the binding arm 4 is in an upright state. In this state, the rear part of the coupling claw 77 contacts the engagement release pin 83, the engagement claw 77 rotates about the shaft 81 as a fulcrum against the elastic force of the spring 82, and the claw 77a rotates around the claw 74a of the claw gear 74. It will be out of place. As a result, the power transmission path between the rotation transmission gear 73 and the drive gear 59 is released, and the rotation transmission gear 74 can freely rotate. Therefore tape reel 1
0 rotates freely, and the tape 13 can be pulled out by pressing the tape 13 with a light force using the object to be bound. Next, when the binding arm 4 is tilted, the guide pin 62
is hooked onto the end of the arcuate hole 61 and rotates with the tilting movement of the binding arm 4, thereby moving the engagement plate 66 upward. On the other hand, the engaging portion 68 of the engaging plate 66 is pressed against the roller 72 by a spring 70 . As a result, the drive gear 59 is moved by the engagement plate 66 as indicated by the arrow F.
be rotated in the direction. This rotation of the driving gear 59 causes the driven gear 75 to rotate, and the engagement pawl 77 also rotates together with the driven gear 75. In this way, the engaging claw 7
7 rotates, the rear part of the engaging pawl 77 separates from the disengaging pin 83, and the pawl 77a of the engaging pawl 77 engages with the pawl 74a of the pawl gear 74 due to the elastic force of the spring 82. The rotation of the drive gear 59 rotated by the tilting movement of the binding arm 4 due to the engagement between the pawl 77a and the pawl 74a of the pawl gear 74 is transmitted to the rotation transmission gear 73 via the pawl gear 74, and thereby the tape reel The gear 11 is rotated and the tape reel 10 is rotated in the tape rewinding direction. Subsequently, the binding arm 4 is tilted and moved to the state shown in FIG. Then, the binding arm 4 is further tilted to cut the tape (sixth
state). When the binding arm 4 is tilted to the final position in this way, the position of the guide pin is at the original position of the arcuate hole 61 (the position shown in FIG. 1), so the positional relationship between the pin 69 and the guide pin 62 is changed. Accordingly, the elastic force of the spring 70 acts just like a bicycle stand, rotates the engagement plate 66 along the engagement surface 65 of the stopper 63, and releases the engagement state of the roller 75.
Then, when the binding arm 4 is raised, the guide pin 62
While moving between the arcuate holes 61, the drive gear 59 is in a freely rotatable state. This state is exactly as shown in FIG. 4, and when the binding arm 4 is raised, the cut end of the tape 13 is clamped by the binding tape crimping and cutting device 7, so that the tape 13 is removed when the binding arm 4 is raised. Accordingly, the tape attached to the tape reel 10 is pulled out. By drawing out the tape 13, the tape reel gear 11 is rotated,
As a result, the rotation transmission gear 73 rotates, and the rotation of the rotation transmission gear 73 is caused by the engagement pawl 77 and the pawl gear 7.
4, the drive gear 59 is rotated in the direction of arrow J in FIG. This rotation of the drive gear 59 is controlled by the engagement plate 66.
Since the engagement with the binding arm 4 is released, the binding arm 4 rotates freely regardless of the binding arm 4. Next, as shown in FIG. 4, after the binding arm 4 is raised to a position where the guide roller 62 contacts the end of the arcuate hole 61, the guide roller 62 moves within the arcuate hole 61 (the rotation of the engagement plate 66 The elastic force of the spring 70 (the fulcrum moves) acts to rotate the engagement plate 66 in the direction of the roller 72, but since the drive gear 59 has rotated first, it does not engage and the tape 13 is pulled out while rotating the drive gear 59 by the rising action of the binding arm 4. When the drive gear 59 is rotated as the tape 13 is pulled out and the rotation regulating protrusion 84 comes into contact with the guide roller 62 that is moving within the arcuate hole 61, the rotation of the drive gear 59 is regulated and pulled out. Tension is applied to the tape 13, and the engagement plate 66 and roller 72 are engaged with each other. At the same time, the support plate 76 is also rotated via the intermediate pawl gear 74 for drawing out the tape 13, so the engaging pawl 77 also rotates and its rear part abuts the disengaging pin 83, returning to the original state as shown in FIG. .

When the binding arm 4 is erected in this manner, the tape 13 can be pulled out to any desired length with a light force, and the tape 13 is pulled out independently of the tape rewinding mechanism. It's summery.

(Effects of the Invention) As detailed above, according to the present invention, the rotation of the driving gear is transmitted to the support plate via the driven gear, and the rotation of this support plate is transmitted to the pawl gear via the engagement pawl connected with the pin. Furthermore, the tape reel gear is rotated by the rotation transmission gear that rotates together with the pawl gear, so when the binding arm is upright, the tape can be freely rotated independently of the tape rewinding mechanism with a light force. Can be pulled out to length. This makes it possible to rewind the tape at the time of binding regardless of whether the tape is pulled out or not, and also allows the tape to be pulled out to any length, making it possible to bind items regardless of the size of the items. be able to.

[Brief explanation of the drawing]

Fig. 1 is a side view of a binding device showing an embodiment of the present invention, Fig. 2 is a side view partially enlarged showing a binding tape crimping and cutting device and a binding tape holding device according to the present invention, and Fig. 3 is a side view of a binding device according to an embodiment of the present invention. Fig. 4 is a side view showing the binding arm in a tilted state from the upright state in Fig. 1; Fig. 5 is a state immediately before cutting the tape in Fig. 2; FIG. 6 is a partially enlarged side view of the binding tape crimping/cutting device and the binding tape holding device showing the binding tape crimping/cutting device and the binding tape holding device. 7 is a front view of the rotating body in FIG. 2, FIG. 8 is a perspective view of the rotating body in FIG. 7, and FIG. 9 is a side view showing a partially enlarged view of the rotating body in FIG. 2. A side view of the embodiment,
FIG. 10 is a side view of still another embodiment of the pressure receiving plate shown in FIG. 2, and FIG. 11 is a cross-sectional view of FIG. 10. 1... Base, 2... Frame, 4... Binding arm,
5... Shaft, 10... Tape reel, 11... Tape reel gear, 59... Drive gear, 62... Guide roller, 66... Engagement plate, 72... Roller, 73
... Rotation transmission gear, 74 ... Pawl gear, 75 ... Driven gear, 76 ... Support plate, 77 ... Engagement pawl, 7
7, 79... Cylindrical member, 80... Shaft, 83... Engagement release pin.

Claims (1)

[Claims] 1. A binding arm is provided on a frame provided on a base so as to be movable up and down, and a tape reel is pivotally supported on the rear side of the binding arm, and a shaft is provided on the frame located approximately midway between the tape reel and the binding arm, A rotation transmission gear and a pawl gear are pivotally supported on the shaft by the same bearing member, and a driven gear and a support plate are pivotally supported by the same bearing member, and an engagement pawl is connected with a pin to the tip of the support plate to engage the shaft. A driving gear is provided in which the tip of the pawl engages with the pawl gear, is rotatably supported on a support shaft of the binding arm, and meshes with the driven gear, and is rotatable on a guide pin provided on a side surface of the binding arm. an engaging portion is formed on the engaging plate to engage with a roller provided on a side surface of the drive plate, and a tape reel gear that engages with the rotation transmission gear is supported by a shaft that pivotally supports the tape reel. A binding device characterized in that an engagement release pin is provided on the frame at a position where the engagement claw comes into contact with the engagement claw when the binding arm is in an upright state.