JPH044206B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a binding machine for binding objects to be bound using adhesive tape.

(Prior Art) For example, when vegetables harvested early in the morning are bundled in predetermined amounts and delivered to a supermarket, there is a time constraint.

Under these circumstances, there is a demand for the development of a binding machine that can efficiently bind objects. In conventional binding machines, the binding arms were raised and lowered by the operator's hands to bind the items to be bundled, but the work efficiency was poor, and now there are machines that use electric methods to raise and lower the binding arms. being developed.

For example, the tying arm of a tying machine shown in Japanese Patent Laid-Open No. 57-77408 uses an endless groove-shaped cam to move up and down. The operation of raising and lowering the binding arm using the cam mechanism of this binding machine is as follows: First, in the process of the binding arm falling down from the upright state, the falling speed of the binding arm is slowed down just before the tape is ready to be cut. Ru. Then, the binding arm waits in the tape cutting standby section of the endless grooved cam → prepares to cut the tape → cuts the tape → remains in a fallen state for a while while grasping the end of the cut tape, and then wakes up after these operations are completed. I try to make it work.

(Problem to be Solved by the Invention) In a binding machine using the above-mentioned cam mechanism, the raising and lowering operation of the binding arm is first decelerated during the process of falling down, and then waits in the tape cutting waiting section of the endless grooved cam → tape During preparation for cutting → tape cutting → gripping the end of the cut tape, the tying arm remains in a fallen state for a while and then performs the movements that occur after these operations are completed, so the raising and lowering movement of the tying arm is slow. There is a problem of low work efficiency.

The present invention provides a tying machine that improves the tying efficiency by quickly raising and lowering the tying arm without using a cam mechanism.

(Means for Solving the Problems) The means according to the present invention for solving the above problems is such that the bases of the binding arms are rotatably supported on a support frame provided on the base so that the binding can be raised and lowered. An arm is provided, a third arm provided at the base of the binding arm is fixed, a rotating plate rotated by a driving means is provided on the base, a roller is attached to the side surface of the rotating plate, and a roller is attached to the outer periphery of the rotating plate. a first arm having a long hole into which the roller is fitted, and a second arm having a roller into which the third arm fits into the long hole are integrally and rotatably supported; The present invention is characterized in that a switch for operating the drive means operated by a protrusion provided on the rotary plate is provided on the base, and a switch for driving the drive means is provided on the object mounting table.

(Function) Since the present invention is configured in this manner, when the worker places the object to be bound on the object placement table, the switch provided there is pressed by the object to be bound and turns on, and the drive means is activated. The rotating plate rotates. As the rotary plate rotates, a first arm having an elongated hole that fits into a roller provided on the rotary plate swings, and a second arm integrated with the first arm also swings. The swinging motion is then transmitted to a third arm having a long hole that fits into a roller provided at the tip of the second arm, thereby raising and lowering a binding arm integrated with the third arm. On the other hand, the rotary plate rotates, and the protrusion provided on the outer periphery of the rotary plate comes into contact with the switch, so that the drive means is operated and one cycle for bundling is completed. In this way, the binding arm is raised and lowered by the rotation of the rotary plate without slowing down or waiting, and on the other hand, the protrusion provided on the outer periphery of the rotary plate is used to turn on and off the switch to operate the drive means. Binding of items is performed.

(Example) An example of the present invention will be described below. 1st
In the figures and FIG. 2, a support frame 2 is attached to the rear of the base 1, and a base 3A of a binding arm 3 is pivotally attached to this support frame 2 via a shaft 4, so that the binding arm 3 can be raised. It is pivoted so that it can be tilted. In front of the support frame 2 and above the base 1, there is provided a table 5 for placing objects to be bound, and this table 5 for placing objects to be bound is attached to the support frame 2 so that its height can be adjusted. It is being A sector gear 6 is attached to the base 3A of the binding arm 3.
is fixed, and an intermediate gear 9 that meshes with this sector gear 6 is rotatably provided on the support frame 2, and a gear 8 that also meshes with this intermediate gear 9 is rotatably provided on the support frame 2.
is provided. A pulley 7 is provided coaxially and integrally with this gear 8, so that the movement of raising and lowering the binding arm 3 and the pulley 7 are interlocked. A reel support shaft 11 is rotatably supported on a support frame 10 located rearward of the support frame 2 and erected on the base 1, and a tape reel 12 is connected to a friction clutch 13 on this reel support shaft 11. It is attached through. Further, a pulley 14 is attached to the reel support shaft 11, and this pulley 14 and the pulley 7 are connected via a belt 15, so that the movement of raising and lowering the binding arm 3 is substantially transmitted to the pulley 14. ing. A rotation transmission path continuation means (not shown) is provided in the middle of the rotational force transmission path between the binding arm 3 and the reel support shaft 11, and when the binding arm 3 is in the upright position shown in FIG.
2 is free to rotate, and when the binding arm 3 is tilted forward and downward, the tape can be rewound onto the tape reel 12 and rotated.
The binding arm 3 is also provided with a plurality of guides 16, and the adhesive tape 17 pulled out from the tape reel 12 is guided by the guides 16 and guided to the tip 3B of the binding arm 3 with the adhesive surface facing up. It's starting to get worse. The distal end 3B of the binding arm 3 faces a support frame 18 fixed to the front end of the base 1, and a spring 19 is attached to the distal end 3B of the binding arm 3 so as to be retractable and extend in the projecting direction. At 20, tape compression rods 21 and 22 are provided with elastic force, and
A tape cutting blade 23 and a tape relief rod 24 are fixedly installed between both tape pressure rods 21 and 22. A tape crimping table 25 that can abut against a tape crimping rod 22 provided at the tip of the binding arm 3 is fixedly attached to a support frame 18 provided on the base 1. A clamping device 26 is mounted in front of the tape crimping table 25. A part of the tape holder 27 is pivotally supported by a rotation function. A clamping rod 28, which is a part of the clamping device 26, is disposed between the tape holder 27 and the tape crimping table 25.
It is provided so that it can be moved toward and away from the tape holder 27 and its elastic force is applied by a spring 28A to the tape holder 27 side. A cam portion 29 is formed at the distal end portion 3B of the binding arm 3 to separate the clamping rod 28 and tape holder 27 from each other. Here, the cam part 29
can come into contact with the clamping rod 28. The tape pressing rod 21 is provided with a tape pushing rod 30 for pushing a part of the adhesive tape 17 between the tape holder 27 and the clamping rod 28. A motor 32 is provided in a box 31 formed on the lower side of the base 1 as a driving means for raising and lowering the binding arm 3, and a sprocket 32B attached to an output shaft 32A of this motor 32 and an intermediate shaft 33 A belt 33B is hung around the attached sprocket 33A, so that the rotation of the output shaft 32A of the motor 32 is transmitted to the sprocket 33A. Intermediate shaft 3
A rotary plate 34 is attached to 3, and a roller 35 is provided on the surface of this rotary plate 34.
This roller 35 is fitted into a long hole 38 of a first arm 37 that is swingably provided in a support frame 36 .
A second arm 39 is integrally provided with this first arm 37, and a roller 4 is attached to the tip of this second arm 39.
0 is set. The roller 40 is fitted into an elongated hole 42 of a third arm 41 fixed to the base end 3A of the binding arm 3. Rotating plate 34
Two protrusions 43 and 44 are provided on the box 31, and a switch 45 is attached to the box 31 at a position that abuts the protrusions 43 and 44. On the other hand, a switch 46 for detecting objects to be bound is attached to the object mounting table 5 . The motor 32 is operated by the switch 46.
When turned on, the output shaft 32A is rotated in the direction of the arrow (counterclockwise) shown by the solid line in Figure 1, and the protrusion 4
4 touches switch 45 and switch 45 turns on.
, the output shaft 32A is rotated in the direction of the arrow (clockwise) shown by the broken line in the figure, and then the protrusion 43
When the motor 32 comes into contact with the switch 45, the motor 32 is stopped and one cycle of operation is completed.

Next, the operation of this embodiment configured as described above will be explained. In FIG. 1, the cut end of the adhesive tape 17 is held between the holder 27 and the clamping rod 28, and the adhesive tape 17 is pulled out between the tip 3B of the binding arm 3 that is standing up. . Then, when the worker pushes the object A to be bound, such as vegetables, into the adhesive tape 17 that has been pulled out in the direction of arrow F, a tensile force is generated in the adhesive tape 17, and this tensile force causes the tape reel 12 to move. The adhesive tape 17 is freely rotated and pulled out by the required length from the tape reel 12. Then, the bundled object A is placed on the mounting table 5. As a result, the switch 46 is pressed by the placed object A and turned ON, and the motor 32 is driven. When the motor 32 is driven in this way (normal rotation), this rotation is caused by the sprocket 3.
2B, the belt 33B, and the sprocket 33A to the rotary plate 34, and the rotary plate 34 rotates. Due to the rotation of this rotary plate 34, the first arm 3
7 swings while being guided by the engagement between the roller 35 and the elongated hole 38, and the second arm 39 integrated with the first arm 37 also swings. and second arm 3
9 and the third arm 4 provided at the tip of the roller 40
By fitting into the elongated hole 42 provided in the third arm 41, the third arm 41 is also swung, and the binding arm 3 falls. This overturning of the binding arm 3 causes loosening of the adhesive tape 17, but this loosening causes the tape reel 12 to reversely rotate via the gears 6, 8, 9, pulley 7, belt 15, and pulley 14, and the tape reel 12 is wound. By the return rotation, the adhesive tape 17 is rewound and its slack is tightened. Then, as the rotary plate 34 further rotates, the binding arm 3 further falls down and its tip 3
B approaches the holder 27, and the adhesive surfaces of the adhesive tape 17 wound around the object A are connected to the tape crimping table 2.
5 and the tape crimping rod 22 and are crimped. Even after the adhesive surfaces of the adhesive tape 17 are pressed together in this way, the rotary plate 34 continues to rotate in the same direction, and the cam part 29 is pushed between the clamping rod 28 and the tape holder 27 and presses them both. The grip on the cut end of the spread adhesive tape 17 is released. Then, the rotating plate 34 continuously rotates in the same direction, and then the tape pushing rod 30 pushes the adhesive tape 17 onto the tape holder 27.
The tape pushing rod 30 is inserted between the tape holder 27 and the clamping rod 28 while the adhesive tape 17 is being held between the contact tape holder 27 and the tape holder 27 .
enter. Then, as the rotary plate 34 continues to rotate in the same direction, the tape cutting blade 23 enters between the tape pushing rod 30 and the clamping rod 28 to cut the adhesive tape 17, and the tape release rod 24 moves between the clamping rod 28 and the tape pushing rod 30. 28 and the tape crimping table 25 and pull out the bound end of the adhesive tape 17 from between the clamping rod 28 and the tape holder 27, and the cut end of the adhesive tape 17 is held between the tape holder 27 and the tape holder 27. Binding of the object A held between the rod 28 and the object A is completed.

The above series of operations is performed by the switch 46
is driven, the rotary plate 34 rotates in the normal direction, and the protrusion 43 provided on the outer periphery of the rotary plate 34 comes into contact with the switch 45. When a protrusion 44 provided on the outer periphery of the rotary plate 34 comes into contact with a switch 45, the switch 45 causes the motor 32 to rotate in the reverse direction and the rotary plate 34 to rotate in the reverse direction as well. This reverse rotation of the rotating plate 34 causes the first
The arm 37 has a roller 35 fitted into the elongated hole 38.
The second arm 39 swings in the opposite direction while being guided by the second arm 39;
The binding arm 3 moves in the direction of standing up via the roller 40, the third arm 41, and the elongated hole 42. This movement of the binding arm 3 in the upright direction causes the clamping rod 28 to come into pressure contact with the tape holder 27 and clamp the newly cut end of the adhesive tape 17. Then, the binding arm 3 performs a standing operation due to the rotation of the rotary plate 34 in the opposite direction, and the adhesive tape 17 is pulled out from the tape reel 12. While the adhesive tape 17 is being drawn out, the moving motion of the binding arm 3 is not transmitted to the tape reel 12, so the adhesive tape 17 is not drawn out and the adhesive tape 17 is placed at the tip of the binding arm 3. 3B and the holding body 27 in preparation for the next bundling. When the binding arm 3 returns to its original state, the protrusion 43 provided on the outer periphery of the rotary plate 34 comes into contact with the switch 45, and the switch 4
5 is turned ON again, and the motor 32 is stopped by a signal from the switch 45.

In this way, the switch 46 is turned on at the object to be bound A.
While the rotating plate 34 continues to rotate in the same direction until the protrusion 44 comes into contact with the switch 45, the binding arm 3 falls, binding, cutting the adhesive tape 17, and cutting the cut end. The clamping is performed, and at the same time as this series of operations is completed, the protrusion 44 switches to the switch 4.
5 and reversely rotates the rotary plate 34 to start the erecting operation of the tying arm 3, so there is no play in the raising and lowering movement of the tying arm 3.

In the above explanation, the binding arm 3 is raised and lowered by rotating the rotary plate 34 in the forward and reverse directions. It is also possible to tie them together.

That is, when the rotary plate 34 rotates once, the first arm 37 swings through the elongated hole 38 fitted with the roller 35 for one cycle. Then, when the rotary plate 34 rotates half a turn, the binding arm 3 falls down and reaches the lowest position, and during the remaining half rotation, the binding arm 3 stands up. In this case, either one of the protrusions 43 or 44 provided on the outer periphery of the rotating plate 34 may be used. That is, the motor 32 is driven by the switch 46, the rotary plate 34 rotates, the rotary plate 34 rotates once, the binding arm 3 is raised and lowered, and, for example, one protrusion 43 contacts the switch 45 and the motor 32 is stopped. One cycle ends.

Next, other embodiments shown in FIGS. 4 and 5 will be described. In the description, the same parts as those in the embodiment shown in FIG. 1 are designated by the same reference numerals, and the description thereof will be omitted. The difference from the embodiment shown in Fig. 1 is as follows.
An air cylinder 47 is provided in place of the motor 32, and a rack 47B attached to the tip of a rod 47A of the air cylinder 47 is meshed with a pinion 50 fixed to a shaft 49 coaxial with a sprocket 48 to transmit its driving force. It is something.

To explain the operation of this embodiment, when the switch 46 is turned on, the rod 47A retreats and rotates the pinion 50. Then, the special note 44 of the rotary plate 34 comes into contact with the switch 45, and the switch 45
When turned ON, the operation of the air cylinder 47 changes and the rod 47A moves forward. As a result, the rotary plate 34 rotates in the opposite direction, and the protrusion 4 provided on the rotary plate 34 rotates in the opposite direction.
3 comes into contact with the switch 45, the rotation of the rotating plate 34 is stopped, and one cycle is completed. In this way, the binding arm 3 is raised and lowered by one reciprocation of the rod 47A of the air cylinder 47, and the objects A to be bound are bound by the same action as explained in the embodiment of FIG.

In the embodiment shown in FIGS. 1 and 4 above, the objects to be bound are bound in one place, but
As shown in FIG. 3, a plurality of binding arms 3 are installed,
It is also possible to simultaneously raise and lower objects using a single motor 32 to bind objects to be bound at a plurality of locations at the same time.

(Effects of the Invention) As detailed above, according to the present invention, the rotation of the rotary plate rotated by the drive device causes the first arm and the second arm to rotate.
Since the arm and the third arm are swung to raise and lower the binding arm, the raising and lowering operation of the binding arm does not require any deceleration or standby operation, and the objects to be bound can be bound in a short time. can.

In addition, by placing the objects to be bound on the mounting table, the switch is actuated to drive the drive means and rotate the rotary plate, and the switch is activated by the protrusion provided on the outer periphery of the rotary plate.
Since the driving means is operated by turning on and off, completely automatic bundling is possible.

In this way, the synergistic effect of the agility of the movement of raising and lowering the binding arms and the fully automatic binding makes it possible to efficiently bind objects.

[Brief explanation of drawings]

Fig. 1 is a side view of a binding machine showing an embodiment of the present invention, Fig. 2 is a front view of Fig. 1 partially shown in longitudinal section, and Fig. 3 is a tying machine partially shown in longitudinal section. FIG. 4 is a side view of a binding machine showing another embodiment of the present invention; FIG. 5 is a front view of FIG. 4 partially shown in longitudinal section; FIG. It is. 1... Base, 3... Binding arm, 5... Mounting number, 3
2... Electric motor, 34... Rotating plate, 35... Roller, 37... First arm, 38... Long hole, 39...
...Second arm, 40...Roller, 41...Third arm, 42...Long hole, 43, 44...Protrusion, 4
5, 46...Switch, 47...Cylinder, 47
B...Rack, 48...Pinion.

Claims (1)

[Claims] 1. The base of the binding arm is rotatably supported on a support frame provided on the base, and the binding arm is provided so as to be movable up and down, and a third arm having a long hole is fixed to the base of the binding arm, A first arm is provided with a rotary plate rotated by a driving means on the base, a roller is attached to the side surface of the rotary plate, a protrusion is formed on the outer periphery of the rotary plate, and the first arm has a long hole into which the roller is fitted. and a second arm having a roller that fits into a long hole of the third arm are integrally and rotatably supported, and a switch is operated by a protrusion provided on the rotating plate to operate the driving means. A binding machine characterized in that a switch for driving the driving means is provided on a base and on a table for placing objects to be bound.