JPH0517092B2 - - Google Patents

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a binding machine for binding objects such as green onions, spinach, and chrysanthemums by winding a binding tape. This invention relates to a tape rewinding device for a binding machine that ensures tight binding.

(Prior Art) Conventionally, a tape reel is rotatably attached to a binding arm that is pivotally mounted on one side of a base so that it can be raised and lowered. A tape rewinding device that applies a rotational force in the tape rewinding direction is provided, and the tape rewinding device applies tension to the binding tape wound around the objects to be bound, thereby tightening the bundles of the objects to be bound. A binding machine is known that promises the following (for example, Japanese Patent Application Laid-Open No. 133811/1983).

By the way, the tape rewinding device of this type of binding machine has a fan gear fixed to one side of the base that meshes with a gear mounted coaxially with the tape reel, and a fan gear that meshes with the gear at the end of the tilting movement of the binding arm. The fan gear is still in mesh and is applying tension to the tape.

In this way, when tension is applied to the binding tape at the end of the tilting movement of the binding arm, until the binding arm is further tilted and the tape is cut by the cutting blade,
Since the binding arm must be pushed down against the tension of the binding tape, a considerable amount of force is required to finally cut the tape, resulting in a great deal of effort for the worker who performs the binding work for a long time. There is a problem with becoming.

(Objective) The present invention has been made in view of the above-mentioned problems, and its purpose is to provide an improved tying machine that has a simple configuration and can reduce the force required to operate the tying arm. An object of the present invention is to provide a tape rewinding device.

(Structure) With this objective in mind, the tape rewinding device according to the present invention includes a guide plate having an arcuate engagement surface fixed to one side of the base, that is, the pivot side of the binding arm;
A roller is attached to the binding arm in association with a tape reel rotatably attached to the binding arm via a linking means, and rolls on the arcuate engagement surface as the binding arm is tilted; The engaging surface is characterized by being cut out so as to release the engagement with the rolling element when the binding arm stands up and at the end of the tilting motion.

With this configuration, when the binding arm is upright, the engagement between the rolling element and the arcuate engagement surface is released due to the notch, so the object to be bound can be bound while pulling out the tape with a light force. It is now possible to place the device on the mounting table, and at the end of the tilting movement of the binding arm, the engagement between the rotor and the arcuate engagement surface is released by the notch, so the engagement is easy. When the binding is released, the tension that was previously on the binding tape disappears, making it possible to tilt the binding arm further and cut the tape with the cutting blade with a light force. Become.

Embodiments according to the present invention will be described below based on the drawings.

(First Embodiment) In FIG. 1, a support frame 2 is erected on one side of a base 1, and a tape clamping means 3 is disposed on the other side.

A binding arm 5 is pivotally attached to the support frame 2 via a support shaft 4 so as to be movable up and down, and the binding arm 5 is biased in the upright direction by a spring 6.

A mounting plate 7 is fixed in the middle of the binding arm 5, and a tape reel 9 is rotatably mounted on the mounting plate 7 via a shaft 8 and a friction clutch (not shown).
A binding tape 10 is attached to this tape reel 9. Tape crimping/cutting means 1 on the tip of the binding arm 5
1 is arranged.

As shown in detail in FIG. 2, the tape crimping/cutting means 11 is roughly composed of a pressing roller 12, a cutting blade 13, a tape relief punch 14, and a crimping punch 15.
The tape release punch 14 here includes a rotatable tape guide roller 16 at the top and a spring 19.
is urged in the direction of tape holding means 3, which will be described later. The tape guide roller 16 provided on this tape relief punch 14 is for guiding the tape 10a pulled out from the binding tape 10, and as long as it has this function, for example, the upper end of the tape relief punch 14 may have a rounded surface. Alternatively, it may be one in which an enlarged head is formed on the upper part of the tape relief punch 14 and the surface of the enlarged head is rounded. The guide roller 16 shown in the illustrated example is provided with flanges that protrude on both sides of the binding tape 10a, so that when the tape 10a becomes slack due to displacement of the tape release punch 14, which will be described later, However, by forming the guide roller 16 into a drum shape, that is, a shape in which the axial center bulges outward, the above problem can be prevented. . A guide roller 17 is disposed on the binding arm 5 and guides the tape 10a, and the cut end 10b of the tape 10a is held by the tape holding means 3.

The tape clamping means 3 is disposed at a position where the tape crimping/cutting means 11 collides with each other when the binding arm 5 is tilted, and cooperates with the tape crimping/cutting means 11 to clamp the cut end 10b of the binding tape. - A pressure receiving plate 31 which has a releasing function and is disposed at a position where it collides with the crimping punch 15, a clamping plate 32 disposed at a distance from the pressure receiving plate 31, and a clamping plate 32 that collides with the clamping plate 32. It is generally composed of a mating rotor 33, and these are supported by a support frame 34 erected on a base. As shown in FIG. 3, the support frames 34 are arranged in pairs at intervals, and a shaft 35 is spanned between the support frames 34, 34. A pair of rocking plates 36, 36 are rotatably pivoted to the shaft 35, and a rotor 33 made of plastic, iron, etc. is attached to a shaft 37 that spans the free ends of the rocking plates 36, 36. .

Here, the rotor 33 has projecting surfaces 38 formed at equal intervals in the circumferential direction, and these projecting surfaces 38 are connected to the clamping plate 3.
When the rotor 33 and the clamping plate 32 are made of a rigid material such as iron, the other is made of an elastic material.
Alternatively, by attaching an elastic material to the surface, the tape cut end 10b can be held securely. Between each projecting surface 38 there is a pressure surface 39 and a smooth surface 40, and the pressure surface 39 is the pressure roller 1.
2, and the smooth surface 40 is formed as a gently curved surface so that the pressure roller 12 rotates smoothly. The rotor 33 is the rotor 33
Via the angle regulating body 41 that regulates the rotation angle of
is urged in the direction of the clamping plate 32 by a spring 42;
It is allowed to swing around a shaft 35. Here, a pair of angle regulating bodies 41 are arranged so as to engage with the axial side portions of the rotor 33, and each angle regulating body 41 is supported by the shaft 35 with play 43 and is a separate body. They are biased by springs 42 and 42, respectively. With this configuration, it is possible to make the clamping force of the cut end 10b uniform in the width direction of the binding tape. Note that it is also possible to configure the upper ends of the springs 42 and 42, excluding the angle regulating body 41, to directly contact the rotor 33, but in such a configuration, the rotor 33 is By attaching it with some play relative to 37, it is possible to equalize the above-mentioned clamping force.

Reference numeral 44 is a space provided between the pressure receiving plate 31 and the clamping plate 32, and is configured to allow the aforementioned tape relief punch 14 to enter therein. 45 is a leaf shielding board.

The tape 10a pulled out from the binding tape 10 attached to the tape reel 9 is guided by the guide rollers 17 of the binding arm 5, and the cut end 10b is held by the tape holding means 3, so that the binding stands up at the standby position. A tape 10a is stretched between the tip of the arm 5 and the tape holding means 3, and by tilting the binding arm 5, the object A to be bound is inserted into the mounting table 18 in contact with the tape 10a. The winding is tied. By applying tension to the tape 10a during the tilting movement of the binding arm 5, that is, during the binding operation, the objects to be bound A can be tightly bundled. It is done.

The tape rewinding device 100 will be explained with reference to FIGS. 4 to 6.
is composed of a guide plate 101 and a rolling element 102.

The guide plate 101, as shown enlarged in FIG.
The starting and ending ends of the arc-shaped engagement surface 104 with the hole 103 as the center of the arc are cut out, and as will be described later, at the end of the raising and lowering movement of the binding arm 5, the rotor 102
The configuration is such that the engagement is released. 105 is a mounting bolt insertion hole, the hole 103 is loosely fitted to the support shaft 4 of the binding arm 5, while the bolt insertion hole 105 is inserted into the base 1.
It is bolted through an upright plate 106 that is installed upright. The bolt hole 107 of the upright plate 106 is formed into a long hole, and allows the positioning of the guide plate 101 to be adjusted.

On the other hand, the rotor 102 is integrally attached to a shaft 108, and the shaft 108 is rotatably attached to the mounting plate 7, so that when the binding arm 5 is raised and lowered, the aforementioned arcuate engagement surface It is designed to engage with.

Teeth 109, 110 that mesh with each other are formed on the rotor 102 and the arcuate engagement surface 104, and the teeth 109, 110 have a serrated cross section as shown in FIGS. 5 and 6. and the teeth 110A and 110B at the starting and ending ends of the arcuate engagement surface 104.
The tooth height is formed to be low in order to match the meshing of the teeth 109 and 110, that is, to prevent mismatching during remeshing, and to make the amount of tape rewind more accurate.

The tape rewinding device 100 and tape reel 9 described above are associated with each other by a linking means 120.

The linking means 120 includes a pulley 121 integrally attached coaxially with the rotor 102, and a tape reel 9.
Small pulley 122 and small pulley 1 mounted coaxially with
One-way clutch 12 interposed between 22 and shaft 8
3, and a belt 124 that is stretched around a pulley 121 and a small pulley 122. By this linking means 120, the rotational force generated in the rotor 102 as the binding arm 5 moves up and down is transmitted to the small pulley 122 via the pulley 121 and belt 124, but due to the presence of the one-way clutch 123, The rotational force is transmitted to the tape reel 9 only when the binding arm 5 is tilted, and the tape reel 9 is rotated in the tape rewinding direction. Tension is generated in the tape 10a by the tilting movement of the binding arm 5, that is, by the rotational force in the tape rewinding direction acting on the tape reel 9 during the binding operation.

Since the pulley 121 and small pulley 122 are used in the linking means 120, both pulleys 121, 1
It has the advantage that by appropriately changing the relative diameter of the tape 22, the amount of tape rewinding, specifically the rotation angle of the tape reel, can be set arbitrarily.

A series of operations of the binding machine configured as described above will be explained.

FIG. 1 shows the standby state, where the rolling element 102
is in a state separated from the arcuate engagement surface 104. In this state, the object A to be bound is applied to the tape 10a, and after being placed on the mounting table 18 while pulling out the tape 10a, the binding arm 5 is tilted.

Along with this tilting movement of the binding arm 5, the rolling element 102
engages with the arcuate engagement surface 104 and rolls, and this rotational force is transmitted to the tape reel 9.
A rotational force in the tape rewinding direction (arrow B in FIG. 1) is applied to the tape 10a, tension is applied to the tape 10a, and the object A is wound tightly.

The final stage of the tilting movement of the binding arm 5, in detail, the crimping punch 15
After colliding with the pressure receiving plate 31 and crimping both ends of the winding of the binding tape, the rotor 102 is again separated from the arcuate engagement surface 104, and until now the tape 1
Since the tension acting on the tape 10a is relaxed, the binding arm 5 is further tilted and the cutting blade 13 cuts the tape 10a.
It becomes possible to tilt and move the binding arm 5 with a light force until it is cut. After that, the binding action is performed in the same way as in a conventional binding machine, but the spring 19
By the action of the tape release punch 14, the ends of the binding tape wound around the object A can be made longer, and especially when adhesive tape is used as the binding tape, peeling of both ends of the winding after binding can be avoided. Effective in prevention. Further, when the tape 10a is cut by the cutting blade 13, the tape release punch 14, which has been lifted up by the winding end of the binding tape wound around the object A, is moved into a space by the action of the spring 19. 44, giving slack to the tape 10a pulled out from the binding tape 10, and forcing the cut end of the tape, which was sandwiched between the clamping plate 32 and the rotor 33, to escape. Therefore, in addition to the tension relaxation of the tape 10a due to the disengagement of the tape rewinding device 100 described above, the newly cut end of the tape 10a formed by the cutting blade 13 is held, that is, the rotor 33 and Holding plate 3
Mis-clamping due to the cooperative action of the two can be prevented.

(Second Embodiment) FIG. 7 shows a second embodiment of the tape rewinding device according to the present invention.
This shows an embodiment in which the rotor 102 is swingable around the tape reel shaft 8, and the arcuate engagement surface 10
4 is configured to roll due to frictional engagement. That is, the rotor 102 is rotatably supported on the free end of a swing arm 111 that is swingable about the tape reel shaft 8, and the swing arm 111 is supported by a spring 112 to support the rotor 10.
2 is biased in the direction of abutting against the arcuate engagement surface 104. In the figure, 113 is a stopper, and stopper 11
3 engages with the swing arm 111 when the binding arm 5 is in the standing standby state, and while the rotor 102 is maintained in the disengaged state from the arcuate engagement surface 104, the binding arm 5
It has a function of preventing unnecessary escape of the rolling element 102 which has separated from the arcuate engagement surface 104 at the end of the tilting movement.

On the other hand, the guide plate 101 here stands directly on the base 1, and can be positioned and adjusted using a long hole (not shown). The arcuate engagement surface 104 formed on the guide plate 101 is here a cam surface, and at the end of the raising and lowering of the binding arm 5, the rolling element 10
The other rotor 102 has a cylindrical shape. These arcuate engagement surfaces 104 and the surfaces of the rotor 102 include
When one is made of a rigid material such as iron or plastic, it is preferable to make the other of an elastic material such as rubber or nylon in order to prevent the rolling element 102 from slipping. Further, by processing the surface with lines or the like, it is possible to further prevent the above-mentioned slip, that is, to equalize the amount of tape rewinding.

By making the rotor 102 swingable as in the second embodiment, the frictional contact force between the rotor 102 and the arcuate engagement surface 104 can be made constant, and the arcuate engagement surface 104 can be kept constant. By using the mating surface 104 as a cam surface, smooth abutment between the rotor 102 and the arcuate engaging surface 104 can be achieved.

The preferred embodiments of the present invention have been described above, but
It includes various modifications without being limited to this.

For example, (a), the rolling element 1 presented as the second embodiment
02 is configured to roll by frictional engagement with the arcuate engagement surface 104, as shown in FIG. The concave groove 113 has a tapered surface 1.
13a and the tapered surface 113a and the rotor 1
02 may be configured so that both ends of the circumferential surface thereof are engaged with each other. It will be configured like this,
The frictional force is increased, and the amount of tape rewinding can be made more accurate. Note that the above configuration is relative, and the grooves 113 may be provided in the roller 102. (b) In the above embodiment, the pulleys 121 and 1 are used as the linking means 120.
22 and an endless belt 124, it may be constructed with a gear train or a link mechanism.

This link mechanism will be explained with reference to FIG. 9. The first link 125 is integrally attached to the spindle 8 of the tape reel 9, and the second link is integrally attached to the spindle 108 of the rotor 102. Link 126 and
It is composed of a connecting rod 127 that connects a first link 125 and a second link 126, and both links 12
5, 126 may be provided with a plurality of attachment holes 128 at different distances from the shafts 8, 108, respectively, and the connecting rod 127 may be attached to the attachment holes 128 that can correspond to the desired amount of tape rewinding.

(Effects) As described above, in the present invention, a guide plate having an arcuate engagement surface is fixed to one side of the base, and the guide plate is connected to the tape reel via a linking means and attached to the binding arm. has a rolling element that rolls on the arc-shaped engagement surface as the binding arm is tilted, and the arc-shaped engagement surface releases engagement with the rolling element when the binding arm is raised and at the end of the tilting movement. Because of the notch, it is possible to pull out the tape from the tape reel with a light force while placing the object to be bound on the mounting table, and it is also possible to tilt the binding arm to bind the object and cut the tape. The tilting action of the tied arm can be performed with a light force.

This can significantly reduce the labor burden of workers.

[Brief explanation of the drawing]

Figure 1 is a schematic front view showing the overall configuration of the binding machine;
2 is a partially omitted front view showing an enlarged tape clamping means and tape crimping/cutting means of the binding machine shown in FIG. 1; FIG. 3 is a side view of the tape clamping means shown in FIG. 2; The figure is an enlarged partially omitted front view showing the tape rewinding device and the linking means with the tape reel of the first embodiment, FIG. 5 is an enlarged view of the guide plate, and FIG. 6 is an enlarged view of the rolling element. FIG. 7 is an enlarged front view of the tape rewinding device of the second embodiment;
The figure is a sectional view showing a modified example of the rolling element and the arcuate engagement surface.
FIG. 9 is a partially omitted front view showing a modification of the linking means. DESCRIPTION OF SYMBOLS 1... Base, 5... Binding arm, 9... Tape reel, 100... Tape rewinding device, 101... Guide plate, 102... Roller, 104... Arc-shaped engagement surface, 120... Coordination means.

Claims (1)

[Scope of Claims] 1. A tape reel is rotatably attached to a binding arm pivotably mounted on one side of a base, and a tape rewinding direction is attached to the tape reel in relation to the tilting movement of the binding arm. A binding machine equipped with a tape rewinding device that provides a rotational force of
a guide plate fixed to one side of the base; and a roller attached to the binding arm in association with the tape reel via a linking means, and rolling on the arcuate engagement surface as the binding arm tilts. A tape rewinding device characterized in that the arcuate engagement surface is cut out so as to release the engagement with the rolling element when the binding arm stands up and at the end of the tilting motion. 2. In the tape rewinding device according to claim 1, the linking means includes a driven rotor associated with the tape reel, a driving rotor associated with the rolling element, and a driving rotor associated with the rolling element. It consists of an endless member that spans between a rotor and the driven rotor. 3. In the tape rewinding device according to claim 1, the linking means includes a first link associated with the tape reel, a second link associated with the rolling element, It consists of a connecting rod that connects both the links, and each of the links is provided with a plurality of mounting holes at different distances from the rotation fulcrum. 4. In the tape rewinding device according to claim 1, the linking means comprises a gear train.