JPS6077825A - Tape rewinder for banding machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

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, and a tape reel is attached to the tape reel for tilting movement of the binding arm, that is, for the binding operation of the binding arm. A tape rewinding device is also provided which applies a rotational force in the tape rewinding direction, and the tape rewinding device applies tension to the binding tape wound around the objects to be bound, thereby tightening the bundle of the objects to be bound. There are known binding machines that do what they promise.

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 the gear is rotated at the end of the tilting movement of the binding arm. By providing a separate member for displacement in the axial direction, the operation of the tape rewinding device is cut off.

However, the provision of a separate member to cut off the operation of the tape rewinding device at the end of the tilting movement of the binding arm not only means an increase in the number of parts, but also requires a separate member to cut off the operation of the tape rewinding device at the end of the tilting movement of the binding arm. In other words, additional force is required to displace the gear in the axial direction, and additional force is also required to maintain the displaced state of the gear, resulting in an increase in the force required to operate the binding arm. There was a problem.

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

(Structure) For this purpose, the tape rewinding device according to the present invention has a guide plate provided with an arcuate engagement surface on one side of the base, that is,
The tape reel is fixed on the pivot side of the binding arm, and is attached to the binding arm in association with a tape reel rotatably attached to the binding arm through a linking means, and the arcuate retaining surface is fixed as the binding arm is tilted. It has a rolling element that rolls, and the arcuate engagement surface is cut out so as to release the engagement with the transfer element at the end of the raising and lowering of the binding arm.

With this configuration, at the end of the raising and lowering of the binding arm, the transfer element associated with the tape reel separates from the arcuate retaining surface of the guide plate fixed to the base, and unlike conventional binding Not only can the special force required to cut off the operation of the tape rewinding device at the end of the tilting movement of the arm be unnecessary, but also the relationship between the binding arm and the tape reel can be completely separated. This has the advantage that the operating force can be reduced.

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 the negative side of a base 1, and a tape clamping means 5 is provided 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 fixedly installed in the middle of the binding arm 5, and a tape reel 9 is connected to the mounting plate 7 via a shaft 8, a friction clutch, and a chi (not shown).
is rotatably mounted. A binding tape 11] is attached to this tape reel 9. A tape cutter I and cutting means 11 are provided at the tip of the binding arm 5.

As shown in detail in FIG. 2, the tape pressing/cutting means 11 includes a suppression roller 12, a cutting blade 13, a tape relief rod 14,
The tape release rod 14 is roughly composed of a fastening rod 15, and a tape release rod 14.
Here, a rotatable tape guide roller 16 is provided on the soil part, and a tape clamping means 6 (to be described later) is provided with a spring 19.
is biased in the direction of The tape guide roller 16 provided on the tape escape rod 14 is for guiding the tape 10a pulled out from the binding tape 10, and as long as it has such a function, for example, the upper end of the tape escape rod 14 may have a rounded surface. or tape escape rod 1
It is also possible to form an enlarged head on the upper part of 4 and give the enlarged head a rounded surface. Note that the guide rollers 16 shown in the illustrated example sandwich the binding tape 10a, so that
Flanges projecting on both sides are provided to prevent the tape 10a from coming off the guide roller 216 when the tape 10a becomes slack due to displacement of the tape relief rod 14, which will be described later. The above problem can also be prevented by forming the trench into a shape in which the center in the axial direction bulges outward. 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 6.

The tape holding means 6 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 hold the cut end 1 of the binding tape.
A pressure receiving plate 31 having the function of holding and releasing 0b and disposed at a position where it collides with the aforementioned crimp rod 15, a clamping plate 32 disposed at a distance from the pressure receiving plate 31, and the clamping plate. 32 and a rotor 53 that abuts against each other, 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 with an interval between them, and a shaft 65 is provided between the support frames 54 and 54. A pair of rocking plates 36.36 are rotatably pivoted to the shaft 55, and a rotor 66 made of plastic, iron, etc. is attached to the shaft 37, which is hooked to the free end of the rocking plates 36.56. There is.

Here, the rotor 33 has protrusions 68 at equal intervals in the circumferential direction.
is formed, and this protruding surface 38 collides with the clamping plate 32 to clamp the cut end 10b of the tape. case,
The other end may be made of an elastic material or an elastic material may be adhered to the surface to ensure that the tape cut end 10b can be held securely. Between each protruding surface 38 is a pressurized surface 69 and a smooth surface 4
The pressed surface 39 has a shape that follows the shape of the pressure roller 12, while the smooth surface 40 is formed as a gently curved surface so that the pressure roller 12 rotates smoothly.

The rotor 33 is biased toward the clamping plate 32 by a spring 42 via an angle regulating body 41 that regulates the rotation angle of the rotor 33, and is able 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 63, but in such a configuration, the rotor 33 is 37
By attaching it with some play, it is possible to equalize the clamping force described above.

Reference numeral 44 denotes a space provided between the pressure receiving plate 31 and the clamping plate 62, and is configured to allow the aforementioned tape relief rod 14 to enter. 45 is a leaf shielding board.

The tape jOa pulled out from the binding tape 1o attached to the tape reel 9 is passed through the guide roller 17 of the binding arm 5...
The cut end iob is held by the tape clamping means 3, and the tape 10a is stretched between the tip of the binding arm 5 standing in a standby position and the tape clamping means 6,
The objects A to be bound, which have been placed against the tape 10a and inserted into the mounting table 18, are wound and bound by tilting the binding arm 5. 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, and this tension application is performed by the tape rewinding device 100.

The tape rewinding device 100 will be explained with reference to FIGS. 4 to 6. The tape rewinding device 100 has a guide plate 10
1 and a roller 102.

The guide plate 101 has holes 103 as shown in an enlarged view in FIG.
The starting and ending ends of the arcuate engaging surface 104 with the arc center at ing. Reference numeral 105 denotes a mounting bolt insertion hole, and the support shaft 4 of the binding arm 5 is loosely fitted into the hole 103, while the bolt insertion hole 105 is bolted to the base 1 via an upright plate 106. The bolt hole 107 of the upright plate 106 is formed into a long hole,
The positioning of the guide plate 101 can be adjusted.

On the other hand, the rotor 102 is integrally attached to the 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 above-mentioned arcuate retaining surface 104.

Here, the transfer element 102 and the arcuate retaining surface 104 are formed with teeth 109 and 110 that mesh with each other.
09 and 110 have a sawtooth cross section as shown in FIGS. 109
, 110, that is, to prevent misalignment during re-meshing, and to make the amount of tape rewind more accurate.

The tape rewinding device 100 described above is associated with the tape reel 9 by a linking means 120.

The linking means 120 includes a pulley 121 coaxially attached to the rotor 102, a small pulley 122 coaxially attached to the tape reel 9, and a one-sided clutch interposed between the small pulley 122 and the shaft 8. 123, and a belt 124 which is passed around the pulley 121 and 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 the belt 124. 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 due to the rotational force in the tape rewinding direction acting on the tape reel 9 as a result of the tilting movement of the binding arm 5 and the operation of binding the tabs.

Since a pulley 121 and a small pulley 122 are used in the linking means 120, the amount of tape rewinding, more specifically, the rotation angle of the tape reel, can be arbitrarily set by appropriately changing the relative diameters of both pulleys 121 and 122. It has the advantage of being able to

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

FIG. 1 shows a standby state, in which the transfer element 102 is separated from the arcuate engagement surface 104. In this state, the object to be bound A 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.

As the binding arm 5 tilts, the transfer element 102 engages with the arcuate retaining surface 104 and rolls, and this rotational force is transmitted to the tape reel 9 in the tape rewinding direction (
A rotational force indicated by arrow B in FIG. 1 is applied, tension is applied to the tape 10a, and the object A is wound tightly.

At the end of the tilting movement of the binding arm 5, specifically, after the crimping rod 15 collides with the pressure receiving plate 31 and presses both ends of the binding tape, the transfer element 102 is again separated from the arcuate retaining surface 104. However, the tension that has been acting on the tape 10a up until now is relaxed, and the binding action is then performed in the same way as in a conventional binding machine, but the tape is wound around the object A by the action of the tape release rod 14 caused by the spring 19. The winding ends of the bundled tape can be made long, and this is effective in preventing peeling of both ends of the winding after binding, especially when adhesive tape is used as the binding tape. Further, when the tape 10a is cut by the cutting blade 13, the tape release rod 14, which has been lifted up by the winding end of the binding tape wound around the object A, is moved into the space 44 by the action of the spring 19. This causes the tape 10a pulled out from the tape bundle 10 to become slack, and the cut end of the tape, which was sandwiched between the clamping plate 32 and the rotor 36, is forced to escape. Therefore, in combination with the relaxation of the tension on the tape 10a due to the release of the tape rewinding device 100 described above, the newly cut end of the tape 10a formed by the cutting blade 16 is clamped, that is, the rotor 33. ! : Mis-clamping due to the cooperative action of the clamping plates 32 is prevented.

(Second Embodiment) FIG. 7 shows a second embodiment of the tape rewinding device according to the present invention, in which a transfer element 102 is made swingable around the tape reel shaft 8, and an arcuate retaining surface 104 It is configured to be transferred by frictional engagement. That is, the swing arm 111 is swingable around the tape reel shaft 8.
The transfer element 102 is rotatably supported on the free end of the transfer element 102, and the swing arm 111 is supported by a spring 112 to rotate the transfer element 102.
2 is biased in the direction of abutting against the arcuate retaining surface 104. In the figure, 116 is a stopper, and the stopper 116 is the binding arm 5.
is engaged with the swing arm 111 when in the standing standby state, and the transfer element 102 is maintained in a detached state from the arc-shaped engagement surface 104, while the transfer element 102 is detached from the arc-shaped engagement surface 104 at the end of the tilting movement of the binding arm 5. It has a function of preventing unnecessary escape of the child 102.

On the other hand, the guide plate 101 is erected directly on the base 1 here,
The position can be adjusted by a long hole (not shown). An arcuate retaining surface 104 formed on this guide plate 101
is a cam surface here, and is configured to have a notch so as to cut off the engagement with the rolling element 102 at the end of the raising and lowering of the binding arm 5, while the rolling element 102 has a cylindrical shape.
These arcuate engagement surfaces 104 and the surface K I of the rolling element 102
(d) In order to prevent the transfer element 102 from slipping, it is preferable to form one side of a rigid material such as iron or plastic and the other side of an elastic body such as rubber or nylon. Further, by applying a process such as lines to the surface, it is possible to further prevent the above-mentioned slippage, that is, to make the amount of tape rewinding uniform.

As in the second embodiment, by making the rolling element 102 swingable, the frictional contact force between the rolling element 102 and the arcuate engagement surface 104 can be kept constant, and the arcuate retaining surface 104 can be kept constant.
By making 04 a cam surface, smooth abutment between the rotor 102 and the arcuate engagement surface 104 can be achieved.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto and includes various modifications.

For example, ta), the rolling element 104 presented as the second embodiment
A concave groove 113 for receiving the rolling element 102 is provided in the concave groove 1.
A Taber surface 113a is formed on 13 to form the Taber surface 116a.
It may be configured such that both ends of the circumferential surface of the roller 102 are engaged with each other. With this structure, the frictional force is reduced, and the amount of tape rewinding can be made more accurate. Note that the above configuration is a relative one, and the groove 113 may be provided in the roller 102. (b) In the above embodiment, the linking means 120
Although the embodiment has been described using pulleys 121, 122 and an endless belt 124, it may also be constructed using a gear train or a link mechanism.

This link mechanism will be explained with reference to FIG. link 126, the first link 125 and the second
and a connecting rod 127 that connects the link 126 of the
Both links 125° and 126 are provided with a plurality of additional holes 128 at different distances from the shafts 8 and 108, respectively, so that connecting rods 127 can be installed in the mounting holes 128 that can correspond to the desired amount of tape rewinding. Good too.

(Effects) As described above, the present invention can cut off the operation of the tape rewinding device with a simple structure of notching the arcuate engagement surface, and eliminates the need for related members that were conventionally required separately. Not only does it have the advantage of being unnecessary, but it also completely separates the relationship between the tying arm and tape reel, reducing the operating force of the tying arm, especially at the final stage of the tying movement. This can also contribute to reducing the labor of the operator.

[Brief explanation of drawings]

FIG. 1 is a schematic front view showing the overall configuration of the binding machine, and FIG. 2 is a tape clamping means and tape crimping and
FIG. 3 is a side view of the tape clamping means shown in FIG. 2; FIG. 4 is a partially omitted front view showing the cutting means in an enlarged manner; FIG. FIG. 5 is an enlarged view of the guide plate, FIG. 6 is an enlarged view of the rotor, and FIG. 7 is an enlarged view of the tape rewinding device of the second embodiment. FIG. 8 is a cross-sectional view showing a modification of the transfer element and the arcuate retaining surface, and FIG. 9 is a front view with parts omitted showing a modification of the linking means. 1...-Base 5... Binding arm 9... Tape reel 100... Tape rewinding device 101... Guide plate 102... Roller 104... Arc-shaped retaining surface 120...・Coordination means? 2 Figure? 3 ro 3 110 Shiba 6 ka l? 5 Figure C'8 Bubbles

Claims (1)

[Scope of Claims] (1) A tape reel is rotatably attached to a binding arm pivotably mounted on one side of the base, and the tape is wound on the tape reel in relation to the tilting movement of the binding arm. A binding machine equipped with a tape rewinding device that applies rotational force in the return direction, comprising: a guide plate having an arcuate retaining surface and fixed to one side of the base; and the tape reel associated with the tape reel via a linking means to perform binding. A roller is attached to the arm and rolls on the arcuate engagement surface as the binding arm tilts, and the arcuate retaining surface engages with the transfer element at the end of the raising and lowering movement of the binding arm. A tape rewinding device characterized by having a cutout for releasing the binding. (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 transfer element, and a drive rotor associated with the transfer element. (3) In the tape rewinding device according to claim 1, the linking means includes an endless section extending between the driving rotor and the driven rotor. a first link associated with the transfer child, a second link associated with the transfer child, and a connecting rod connecting the two links; A plurality of attachment holes are provided. (4) The tape rewinding device according to claim 1, wherein the linking means comprises a gear train.