JPH0451410B2 - - Google Patents

Description

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

(Prior art) Conventionally, a device has a guide block that guides the binding tape pulled out from the winding tape, and a holding block that holds the cut end of the binding tape, and the binding tape stretched between the two blocks. BACKGROUND ART A binding machine is known in which an object to be bound is applied, a guide block is brought into close contact with a holding block, and the object is wound and bound with a binding tape. A typical example thereof will be described with reference to FIG. A holding block 6 is disposed at a position where the guide block 4 collides with the tilting movement of the binding arm 2, and the binding tape 10 pulled out from the wrapping tape 8 is passed through the binding arm 2 and the guide block 4. Then, the cut ends 10a are held between the holding blocks 6, and the objects to be bound A are pressed down to the mounting table 12 while being applied to the binding tape 10 stretched between the guide block 4 and the holding block 6, and then the objects are bound. arm 2
The crimping/cutting mechanism 1 is arranged on the guide block 4 by tilting and moving the binding tape 10 to wind the binding tape 10 around the object to be bound A, causing the guide block 4 and the holding block 6 to collide with each other.
4, the wound end of the binding tape is fixed and cut, and the object to be bound A is wound and bound with the binding tape. Generally, when wrapping the binding tape 10 around the object A, the tape is wound. activating the return mechanism 16 to apply tension to the binding tape 10;
The objects A to be bound are tightly bound.

This type of binding machine is used to bind agricultural products such as vegetables and flowers because it can bind objects reliably and quickly.Furthermore, with the development of various mechanisms, it can be used to bundle objects into long industrial accessories or rings. It is beginning to be applied to bind various objects such as electric wires.

By the way, when a user uses a bundle bound with binding tape, it is necessary to remove the binding tape, but the binding tape used in this type of binding machine cannot be easily cut by hand, so it must be cut with a knife. Currently, the binding tape is removed.

For this reason, there is a strong demand from housewives and others who touch vegetables bound with binding tape on a daily basis to use tape that can be easily cut by hand.

In order to meet this demand for easy tearability by hand, tape manufacturers have proposed winding tapes in which weakened zones are formed on the tape.

However, the binding tape needs to be strong enough to withstand the back tension applied to tightly bundle the objects to be bound, and the strength of the back tension is adjusted depending on the type of the objects to be bound. When the above-mentioned wrapping tape with a weakened section was used in a binding machine, there was a risk of tape cutting accidents occurring during the binding operation, and the range of its application was naturally thought to be limited.

(Purpose) As described above, the present invention replaces the conventional idea that the tape manufacturer processes the tape by simply having the binding operator who actually uses the binding tape form a preferable weakened zone on the tape. The purpose of this invention is to provide a tying method and device that can meet the above-mentioned requirement for easy tearing by hand without interfering with the tying process. It is in.

(Structure) For this purpose, in the first invention of the present application, the binding tape pulled out from the wrapped tape is guided through the roll of the weakened zone forming means, and the end of the binding tape is held by the holding block. A binding tape is stretched between the holding block and the guide block, and the pressing force between the rolls provided in the weakened zone forming means is adjusted according to the type of the objects to be bound. As an apparatus for carrying out this first invention, the device has a structure for winding and bundling bundled objects.
The guide block guides the binding tape pulled out from the winding tape and the holding block holds the cut end of the binding tape, and the object to be bound is applied to the binding tape stretched between both blocks. , a rotatable unit that is arranged to sandwich the binding tape in the thickness direction of the binding tape in a binding machine that wraps and bundles the items to be bound with the binding tape by bringing the guide block into close abutment with the holding block; and a pair of rolls that can approach and separate from each other are provided,
A processed surface for forming a weakened zone in the binding tape is formed on the outer peripheral surface of at least one of the pair of rolls, and the pressure contact force of the pair of rolls can be adjusted and the two rolls can be separated. It is characterized by being provided with an adjustment mechanism.

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment) FIG. 7 schematically shows the entirety of an apparatus according to an embodiment, which has a configuration in which a weakened zone forming means 30 is attached to a conventionally known binding machine. The tape rewinding mechanism 16 in this known binding machine is constructed by connecting the support shaft 18 of the bundle inspection arm 2 and the tape reel 20 with a gear train, thereby allowing the tape rewinding mechanism 16 to move along with the tilting movement (binding movement) of the binding arm 2. Then, a rotational force is applied to the tape reel 20 in the direction of rewinding the binding tape 10 onto the winding tape 8, thereby applying tension to the binding tape 10 and ensuring tight binding of the objects to be bound. There is. This tension can be easily and freely adjusted by adjusting the friction engagement of a friction clutch (not shown).

In this type of binding machine, the weakened zone forming means 30 is disposed on the binding arm 2 to constitute the apparatus of the embodiment.

FIG. 1 is an enlarged view of the weakened zone forming means 30, and FIG. 2 is a cross-sectional view of the weakened zone forming means 30 shown in FIG. The structure of this weakened zone forming means 30 will be explained with reference to FIGS. 1 and 2.

The weakened zone forming means 30 is fixed to the binding arm 2 with a frame 32. The frame 32 consists of a pair of side plates 34, 34 and a top plate 36. The pair of side plates 34, 34 have respective bases fixed to the binding arm 2 with bolts, and the side plates 34, 34
A top plate 36 is spanned between 4 and 34. Each side plate 34 is provided with a guide slot 38 having parallel long sides, and guide grooves 40, 40 are formed in the parallel long sides of the guide slot 38.

The weakened zone forming means 30 includes a pair of rolls 42, 4.
4 and the rolls 42, 44,
Adjustment mechanism 4 that allows the rolls 42 and 44 to be separated
It consists of 5.

The pair of rolls 42 and 44 are arranged such that one roll 42 and 44 sandwich the binding tape 10 in the thickness direction.
The shaft 46 spans between the bases of the side plates 34, 34.
is rotatably attached to the shaft 46, and the shaft 4
6 is attached to the side plates 34, 3 with bolts 48, 48 on both ends.
4, and the other roll 44 is attached to a movable shaft 49 which is movable along a guide slot 38 in the side plate. That is, both ends of the movable shaft 49 are rotatably attached to a movable plate 50, and the movable plate 50 fits into the guide groove 40 and is slidable along the long side of the guide slot 38. Furthermore, roll 4
2 may be fixed to the shaft 46 to form a fixed roll. Reference numeral 52 in FIG. 2 indicates a bolt that fixes the roll 44 to the movable shaft 49.

The adjustment mechanism 45 consists of a bolt 54 and a compression spring 56. The bolt 54 is screwed into a screw hole 58 in the top plate 36, extends through the top plate 36 into the guide elongated hole 38, and is connected to the roll 44 by turning a knob 60 on the head of the bolt 54. The pressure contact force with one roll 42 is adjusted. 62 is bolt 5
4 is a nut for fixing the bolt position.

On the other hand, the compression spring 56 is arranged to face the bolt 54 via the movable plate 50, and here
It is located within 8. Therefore, by turning the knob 60 so as to shorten the length of the bolt 54 extending in the elongated hole 38, the pressure force between the roll 44 and one roll 42 can be adjusted.
Both rolls 42, 44 can be separated. 1st
In the figure, 63 indicates a meandering prevention roll. Figure 2 shows
The binding tape 10 is shown being pinched between both rolls 42 and 44. In the embodiment shown in FIG. 2, one roll 42 is a receiving roll with a smooth peripheral surface, and the other roll 44 is composed of two rolls 44a, 44a spaced apart in the axial direction. is used as a processing roll for forming weakened zones on the binding tape 10. FIGS. 3 to 6 show examples of processing rolls in which various processed surfaces are formed on the outer peripheral surface of the roll.

FIG. 3 shows a processing roll 44 having hard particles 70 such as abrasive material fixed to the circumferential surface of the roll in a band shape. Of course, the hardness, particle size, and distribution density of the particles 70 can be selected as appropriate. It is also possible to select a particle band structure having an appropriate particle size from commercially available abrasive paper and adhere it to the circumferential surface of the roll 44. In contrast to the processing roll 44 having this particle band structure 70, one of the rolls 42 is preferably a hard roll made of metal, plastic, or the like.

4 to 6 show rolls in which various protrusions are provided in a strip shape on the circumferential surface of the roll. FIG. 4 shows a plus protrusion 72, and FIG.
4. Fig. 6 shows a processing roll 44 with needle-like protrusions 76.
shows. The shape of these protrusions is not limited to the embodiment shown here, and the distribution density of each protrusion can also be selected as appropriate. In contrast to the processing roll 44 provided with such protrusions, one of the rolls 42 is preferably an elastic roll made of rubber or the like.

Next, a method for bundling objects using this device will be explained.

First, the binding tape 10 pulled out from the wrapping 8 is passed through the rolls 42 and 44 of the weakened zone forming means 30.
The end portion 10a of the binding tape 10 is held by the holding block 6 through the guide block 4. Next, the screwing depth of the bolt 54 is adjusted according to the type of the objects to be bound, and the pressing force between the rolls 42 and 44 is adjusted. Alternatively, the binding tape 10 pulled out from the wrapping 8 is attached to the weakened zone forming means 3.
After passing between the rolls 42 and 44 of 0, the threading depth of the bolt 54 is adjusted according to the type of the object to be bound, the pressure force between the rolls 42 and the roll 44 is adjusted, and the object is passed through the guide block 4. , the holding block 6 holds the end 10a of the binding tape 10.

The pressing force between the rolls 42 and the rolls 44 is adjusted as follows by adjusting the threading depth of the bolt 54 according to the type of the objects to be bound. For example, if the material to be bound A is a leafy material such as spinach, the above-mentioned back tension will be weakened. Even if the weakened zone is strengthened to improve manual tearability, the binding tape 10 will not break during binding. Also,
For items that require firm binding, such as turnips or flower stems, bind with strong back tension. When tying with a strong back tension in this way, if the screwing depth of the bolt 54 is deepened and the pressure force between the rolls 42 and the rolls 44 is strengthened to strengthen the formation of a weakened zone, it is possible to strengthen the formation of a weakened zone during tying. The binding tape 10 may break at the weakened zone forming part. Therefore, when the back tension is strong like this, the screwing depth of the bolt 54 is made shallow and the roll 42 and roll 44 are tightened to a shallow depth.
The pressure is adjusted to weaken the formation of a weakened zone by weakening the compression force.

In addition, when the binding tape 10 is made of a material that is relatively weak in tension, such as polyester, polypropylene, or rigid vinyl chloride,
Alternatively, in the case of using a binding tape made of a material with relatively strong tension such as soft vinyl chloride or polyethylene, the relationship between the tension of this binding tape 10 and the strength of the back tension against the object to be bound A is determined when binding. The strength of the weakened zone is adjusted so that the binding tape 10 does not break.

Furthermore, some objects to be bound do not require manual tearability. For such objects to be bound, the rolls 42 and 44 are spaced apart to prevent the formation of weakened zones in the binding tape 10.

Next, the object to be bound A is placed on the binding tape 10 drawn out between the guide block 4 and the holding block 6.
When the mounting table 12 is pushed down while applying the tape, the binding tape 10 pulled out from the wrapping tape 8 has a weakened zone suitable for the type of the objects A to be bound and the type of the binding tape 10, and the binding tape 10 is pulled out from the wrapping tape 8. At times, the binding tape 10 can be bound without breaking. Furthermore, the bound products are bound with appropriate ease of manual tearing.

Further, in adjusting the weakened zone forming means 30, weakened zones can be formed at appropriate positions on the binding tape 10 by loosening the bolts 52 and shifting the processing roll 44 in the axial direction (left and right directions in the figure). Can be done.

(Effects) As is clear from the above description, the present invention forms a weakened zone during the bundling work as necessary, thereby reducing the hand-tearability of the bundling tape without interfering with the bundling work. We can meet your requests.

In addition, objects that must be bound with strong back tension can be bound with binding tape that does not have weakened zones, and one type of wrapping tape can be used to bind various objects. Preferred form (presence or absence of weakened zone, degree of strength, mode of weakened zone)
Since it can be used in a variety of ways, more preferable bundling is possible.

[Brief explanation of the drawing]

FIG. 1 is an enlarged side view showing the weakened zone forming means;
FIG. 2 is a sectional view of FIG. 1, FIGS. 3 to 6 are front views showing examples of processing rolls, and FIG. 7 is a schematic side view of the embodiment. 4...Guide block, 6...Holding block, 8
...Wrapping tape, 10...Binding tape, 10a...
... Cutting end portion, 42 ... Roll, 44 ... Roll (processing roll), 45 ... Adjustment mechanism.

Claims (1)

[Scope of Claims] 1. Guide the binding tape pulled out from the wrapped tape through the roll of the weakened zone forming means, hold the end of the binding tape in the holding block, and place it between the holding block and the guide block. A method of tensioning a binding tape and adjusting the pressing force between rolls provided in a weakened zone forming means according to the type of the object to be bound, and then winding and binding the object with the binding tape. 2. It has a guide block that guides the binding tape pulled out from the wrapping tape, and a holding block that holds the cut end of the binding tape, and the object to be bound is placed on the binding tape stretched between both blocks. A rotating device is arranged to sandwich the binding tape in the thickness direction of the binding tape in a binding machine that wraps and bundles the items to be bound with the binding tape by bringing the guide block into close contact with the holding block. A pair of rolls are provided that can freely move away from and approach each other,
A processed surface for forming a weakened zone in the binding tape is formed on the outer peripheral surface of at least one of the pair of rolls, and the pressure contact force of the pair of rolls can be adjusted and the two rolls can be separated. A binding device characterized by being provided with an adjustment mechanism.