JPS6330646Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to a chuck opener in a binding machine that uses binding adhesive tape (hereinafter referred to as tape) to bind objects such as vegetables. It is something.

(Prior Art) Conventionally, a binding machine of the above type in which a chuck opener (corresponding to the reference numeral 13 in Figure 1) is used in the binding part is well known without any particular example. .

This conventional chuck opener usually has a uniform flat surface along its length.

(Problem that the invention aims to solve) By the way, when it comes to binding objects, it is natural that the objects should be bound tightly and with a predetermined binding strength without loosening. desirable.

This also applies to bundling vegetables and the like.

For this purpose, it is ideal to apply the tape to the objects to be bound with a predetermined tension, and to complete the binding while maintaining this tension as much as possible.

Therefore, in order to first generate this tensile force, this type of binding machine normally applies an unwinding force in the unwinding direction to the annular tape bundle (corresponding to the number 6 in Figure 1) around which the tape is wound. This tensile force is obtained by applying a force and balancing this acting force, or by pulling out the tape against this force.

However, in the case of a conventional chuck opener, as mentioned above, along its length,
Since the entire surface is uniform and flat, a chuck roller (first
At the same time as the part corresponding to numeral 12 in the figure comes into contact, the tape is pressed and sandwiched between the surface of the chucking opener and the chucking roller in the form of an upper and lower sandwich, and becomes immobile in the forward and backward directions.

Therefore, at that moment, the above-mentioned tensile force that had been acting on the tape, that is, the tensile force that balances or opposes the force acting in the unwinding direction of the annular tape bundle, The signal is no longer transmitted to the object to be bound, and the signal is blocked at this point.

Furthermore, this state continues even while the chucking roller is rolling.

However, the fact that the tensile force is cut off midway means that when binding, it is difficult to apply the tape to the object to be bound with a predetermined tensile force, and to complete the binding while maintaining this tensile state as much as possible. It is clear that this is inconvenient in view of the above-mentioned bundling mode, which is considered desirable.

Therefore, this invention attempts to solve this problem by providing a chuckkin opener in which the tensile force is not cut off midway as described above.

(Means for Solving the Problems) The structure of this invention to achieve this object will be explained with reference to the reference numerals in the drawings. The chuck opener 13 is rolled and pressed against the binding part 2, which is formed by constantly biasing the chuck opener 13 fixed to the chuck opener 9 and the tape presser 10, and the clamping arm 9 is oscillated and retracted, and the binding adhesive tape is A binding machine for binding objects such as vegetables using the binding adhesive tape 6a, in which a binding swinging arm 4 on which a tracking roller 12 for guiding the binding roller 6a is pivoted is configured to be able to swing upwardly. In,
A tape guide hole 13a having a width larger than the width of the binding adhesive tape 6a and smaller than the width of the chuck roller 12 is formed in the chuck opener 13 along the length direction of the chuck opener 13. This is what I did.

(Function) With this configuration, the chuck opener 1
3 and the tracking roller 12, and when the latter moves while rolling and pressing the former, the tape guide hole 13a allows the tape 6 to
a can freely pass through this tape guide hole 13a without being held immovable by being crimped and clamped by these, and therefore, the above-mentioned tensile force is not blocked in any way and the tape is attached to the side of the part to be bound. It acts in such a way that it is transmitted to

(Example) Hereinafter, a specific example of this invention will be described with reference to the drawings.

Figures 1 and 2 show a case in which this invention is applied to an electric binding machine, in which a binding part 2 is provided at the front upper part of a box-shaped chassis 1, and an electric drive part 3 is provided at the rear lower part. A binding swing arm (hereinafter referred to as a swing arm) 4 is configured to be able to swing vertically in one reciprocation from the drive unit 3 to the binding unit by operating a switch 5, and during this one reciprocating vertical swing, The tape 6a is used to bind objects A into a ring.

In the binding section 2, a tape presser 10 is attached to the rear surface of the tip of the clamping arm 9, and the tape presser 10 is attached to the rear surface of the tip of the clamping arm 9, and the tape presser 10 is attached to the rear surface of the tip of the clamping arm 9.
1 is always energized, and both 8 and 10 hold the tip of the tape 6a except during binding operations. In addition, a chucking roller 12 rotatably attached to the front of the lower end of the swinging arm 4 presses and rolls on the clamping arm 9, so that the chucking roller 12 moves forward against the spring 11. A chuck opener 13 is mounted so as to swing back and forth. Further, the adhesive surface of the tape 6a is one side, and the tape presser 10
It is arranged so that the adhesive surface is on the side.

Incidentally, the chuck opener 13 is made of a plate material with a width approximately equal to that of the chucking roller 12, which is bent forward from the middle part, and from near the bent part to near the upper edge in the left-right direction, slightly wider than the width of the tape 6a. A tape guide hole 13a having a wide rectangular shape or the like is cut,
Furthermore, it is bent downward near the upper end,
A tape presser 10 and its lower end are overlapped and fixed to the rear surface of the tip of the clamping arm 9 (see FIG. 3).

However, a tape presser fitting hole 13b is formed in the chuck opener 13 in communication with the tape guiding hole 13a (see FIG. 4) or a tape presser fitting hole 13b into which the tape presser 10 can be inserted separately, and the tape presser 10 and this channel are formed on the rear surface of the tip of the clamping arm 9. Fixing the chuck openers 13 separately with screws or the like has the advantage of not only making it easier to align the two, but also making it easier to replace the chuck openers 13 when they wear out.

The drive unit 3 receives input from a switch 5 disposed near the binding unit 2, rotates the motor 14, changes the speed of the rotational power from the output shaft 15 as appropriate, transmits it to the approximately heart-shaped cam 16, The swinging arm 4 is caused to swing up and down once from the normal upper position position (dashed line in FIG. 1) about the swinging fulcrum P by the arc-shaped locus drawn by the follower 17 that comes into contact with the driven member 17.

On the other hand, the rotational power of the motor 14 is also transmitted to the roller operating cam 18, which partially has an arcuate portion 18a, causing the tension roller 19, which is configured to come into contact with the arcuate portion 18a, to roll only during this period. This is also transmitted to the tape supply reel 21 mounted on the same shaft 20.

As a result, the tape 6a can properly tighten the objects A during the binding operation while the swinging arm 4 is moving downward.
The timing is adjusted with the heart-shaped cam 16 so that the necessary tension can be applied to the swing arm 4, and this tension can be maintained until the swing arm 4 finishes the binding work and promptly switches to returning to the upward movement.

Furthermore, when the swing arm 4 swings back and forth up and down, the movement of the roller actuating cam 18 is sensed by actuators such as two micro switches 22, 22, and the motor 14 is controlled by the sensing signal.

In addition, in the figure, 23 is a braking spring that brakes the tension roller 19, 24 is a support base for the objects A to be bound, and 2
Reference numerals 5, 26, and 27 denote a press plate, a push pin, and a tape 6a that press the tape 6a attached to the lower end of the swinging arm 4 so that the tape 6a is polymerized and bonded.
It is a cutting blade that cuts.

According to the above configuration, the tape 6a pulled out from the tape supply reel 21 into which the annular tape bundle 6 formed by winding the tape 6a is inserted and attached is transferred to the swinging arm 4 and the tracking roller 12 pivoted thereon. Then, the tip part is held between the tape receiving part 8 and the tape presser 10 of the binding part 2, and the object A to be bound is inserted from the adhesive surface side, which is the front surface of the tape 6a, and the swinging arm 4 is moved down and chucked. While both ends of the roller 12 are in contact with the upper part of the chuck opener 13 and are rolling to the lower part, the tape 6a guided by the chucking roller 12 is in the position of the tape guide hole 13a of the chuck opener 13. Therefore, the tension applied to the tape 6a will not be interrupted. During this time, the push pin 26 and press plate 25 start polymerizing and adhering the tape 6a on the side of the object to be bound A, and then the tape is cut by the cutting blade to complete the binding work.

(Effect of the invention) When this invention is used, the check opener 1
3 and the chucking roller 12, and when the latter moves while rolling and pressing the former,
Due to the presence of the tape guide hole 13a, the tape 6a
The tape can freely pass through the tape guide hole 13a without being crimped and clamped by these tape guide holes 13a, so that the above-mentioned tensile force is not interrupted in any way and is directed to the part to be bound. communicated.

Therefore, during the binding work, it is possible to apply the tape to the object to be bound with a predetermined tensile force, and to perform the binding while maintaining this tension state.
As a result, the objects to be bound can be bound tightly without loosening and while maintaining a predetermined binding strength.

[Brief explanation of the drawing]

Fig. 1 is a front view showing a binding machine according to this invention, Fig. 2 is a plan view thereof, Fig. 3 is an enlarged perspective view of the main part showing how the chuck opener is installed in the binding machine according to this invention, FIG. 4 is an enlarged perspective view of a main part showing another embodiment. Code, 2... Binding part, 4... Binding swing arm,
6a... Binding adhesive tape, 7... Support arm, 8
...Tape receiver, 9... Holding arm, 10... Tape presser, 12... Chucking roller, 13...
Chuck opener, 13a...tape guide hole.

Claims (1)

[Scope of utility model registration request] The chuck opener 13 is rolled and pressed against the binding part 2 formed by constantly urging the chuck opener 13 fixed to the clamping arm 9 and the tape presser 10 toward the tape receiving part 8 of the support arm 7,
A chucking roller 12 that swings and retreats the holding arm 9 and guides the binding adhesive tape 6a.
In a binding machine that binds objects to be bound, such as vegetables, using the binding adhesive tape 6a, the binding swinging arm 4, which is pivoted on the binding swing arm 4, is configured to be vertically swingable, and the chuck opener 13 is provided with this A tape guide hole 13 having a width larger than the width of the binding adhesive tape 6a and smaller than the width of the chucking roller 12 along the length direction of the chuck opener 13.
A chuck opener for a binding machine, characterized in that it is formed by forming a.