JP3477121B2 - A packing machine provided with a winding body of a thermoplastic resin string, a manufacturing method thereof, and a band reel for a winding body without a winding core. - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding body of a thermoplastic resin string and a method for manufacturing the same, and more particularly to a packing machine provided with a winding band reel without a winding core.

[0002]

2. Description of the Related Art A conventional roll is made by melting an olefinic thermoplastic resin such as polypropylene and extruding it into a tape.
The thermoplastic resin cord is stretched at a take-up speed higher than the extrusion speed to form a thermoplastic resin string, which is then wound around a winding core such as a paper tube in a coil shape. In a roll body obtained by winding a thermoplastic resin string around such a paper tube, the paper tube remains after using the thermoplastic resin string of the roll body in an automatic packing machine or the like. Since the paper tube after use is severely damaged, it is difficult to reuse it as a core, and since this paper tube is hardened with a synthetic resin adhesive, it cannot be used as a raw material for recycled paper. It has been discarded as it is. Such disposal is a burden on the user of the thermoplastic resin string, and the user strongly requests the winding body formed only of the thermoplastic resin string without the core.

Therefore, the applicant of the present invention filed Japanese Patent Application Laid-Open No. 7-3156.
Japanese Patent Laid-Open No. 90 proposes a winding body having only such a thermoplastic resin string without a winding core. The technique described in Japanese Patent Application Laid-Open No. 7-315690 discloses that a thermoplastic resin cord is wound around the center of a core composed of a left core and a right core joined at a joint surface, and an end portion of the thermoplastic resin cord is wound around the core. After applying a trowel to the overlapped part with the part of the thermoplastic resin string that has been wound around and welding, wrap all the remaining thermoplastic resin string around the core, then remove the left core and the right core and remove the core It is to manufacture a roll.

Many packing machines generally use a roll having a paper tube. Therefore, the roll reel supporting portion of the band reel is fixed in accordance with the inner diameter of the paper tube. As the structure of the roll reel supporting portion of such a band reel, there is a columnar structure that fits into a paper tube, a structure in which three points of the paper tube are supported by flat bars (flat bar three-point support structure), or a flat plate inside the paper tube. There is a structure (flat plate structure) in which two pieces are arranged in parallel and supported. Further, the band reel is rotated by the force with which the band is fed to the pool box by the feed roll, that is, the force by the band pulling out.

[0005]

However, in the winding body without the core described in Japanese Patent Laid-Open No. 7-315690 mentioned above, the end portion of the thermoplastic resin cord and the portion of the thermoplastic resin cord wound once are formed. Since the trowel is applied to the overlapped part to weld it,
In some cases, there is a problem that the welding strength is too strong. In other words, if the welding strength is too high, when this roll is used in an automatic packing machine, this welding part will not come off easily with only the rotational force of the thermoplastic resin feed roller, and an excessive force is applied to the feed roller. Therefore, there is a problem that the automatic packing machine is damaged. Further, if the welding strength is too strong, there is a problem that the resin in the welded portion of the resin string is easily torn when the welded portion of the thermoplastic resin string is peeled off during use.
Furthermore, since only the overlapping portion of the end portion of the thermoplastic resin string and the portion of the thermoplastic resin string wound once is welded,
There is also a problem that depending on the position of welding of the entire width of the winding body, winding collapse may occur from the end of the thermoplastic resin string inside the winding body.

Further, in the packing machine, since the supporting portion of the band reel is fixed, when the winding body without the core is set on the band reel, the inside of the band may come into contact with the supporting body and collapse. In addition, since the inner diameter of the band tends to be eccentric in a winding body without a winding core, there is a problem that a winding body that is slightly eccentric during transportation cannot be used in a packing machine having a fixed support portion. Therefore, it is necessary to take measures to completely prevent such eccentricity. As a countermeasure against this, there is a method of using a cushioning material, a protective material, or the like when packing the winding body, but in this case, there is a problem that the packing work takes time and the packing cost becomes high. Further, new waste such as a cushioning material and a protective material is newly generated, which does not serve the original purpose of manufacturing a winding body without a core in order to reduce the waste.

The band reel having the above-mentioned conventional flat bar three-point support structure or the support of the flat plate structure can use a winding body which is slightly eccentric, but the support does not extend along the inner surface of the winding body, Since a space is created between the body and the inner surface of the roll, if the remaining length of the thermoplastic resin string of the roll becomes short during use, this roll will have a triangular shape with the flat bar three-point support structure. , In the case of a flat plate structure, it is transformed into a shape along each quadrangle. Further, as described above, since the band reel is rotated by the inertial force due to the band pulling out, when the band to be used approaches the end, the band bites into the band reel, the band is entangled, or it collapses at the end of the band. Therefore, the band cannot be used until the end. Furthermore, in a packing machine with a structure in which the band reel is externally attached, in the case of a winding body without a winding core, the end part of the last part of the band becomes free and is released by the rotational force of the band reel,
There is also a risk that the end will hit the operator's hand.

The present invention has been made to solve the above problems, and provides a winding body free from tearing troubles and winding collapse during use, a method of manufacturing the winding body, and a winding body without a winding core. It is an object of the present invention to provide a packing machine provided with a band reel for a winding body, which can be applied even to an eccentric product and which can use up a thermoplastic resin string to the end without a winding core.

[0009]

In order to achieve the above object, the winding body of the thermoplastic resin cord of the present invention is a winding body in which the thermoplastic resin cord is wound in a coil shape many times without a winding core. In, through-holes are provided in a plurality of thermoplastic resin strings overlapped with each other, the peripheral portion of the through-holes are connected by fusion to form a loop body, the thermoplastic resin string is wound around the loop body. Is characterized by becoming.

Here, the loop body referred to in the present invention is a substantially cylindrical member obtained by connecting a plurality of thermoplastic resin strings wound in a coil shape, and serves as a winding core. Refers to.

In the wound body of the thermoplastic resin string of the present invention,
A through hole is also provided in a plurality of thermoplastic resin strings that are overlapped near the end of the winding end of the thermoplastic resin string, and a plurality of thermoplastic resin strings are connected by fusing the peripheral portions of the through holes to form a thermoplastic resin. The end portion of the winding end of the resin string may be fixed to the winding body.

In the wound body of the thermoplastic resin string of the present invention,
The through-hole is the length around the perimeter of the peripheral portion and its shape and arrangement, and the number of thermoplastic resin cords to form the through-hole is based on the material, thickness and width of the thermoplastic resin cord. It is preferable that it is set in advance so that the balance between the connection strength and the peel strength of the above-mentioned laminated thermoplastic resin strings is adjusted.

According to the wound body of the thermoplastic resin cord having the above-mentioned structure, since the plural thermoplastic resin cords which are overlapped with each other are connected by fusing the peripheral portions of the through holes, the loop having a stable connection strength is formed. A body (core) is obtained. As a result, there is no collapse of the winding from the inside of the roll, and moreover, a plurality of thermoplastic resin strings are wound in a stable state, resulting in the originally intended use as the thermoplastic resin string. Becomes

Further, when the through holes are also provided in the plurality of thermoplastic resin strings stacked in the vicinity of the end of the winding end of the thermoplastic resin string, there is no collapse of the winding from the end of the winding end and There is no need to bother to end the ends by tape and heat-sealing.

As for the through holes, the total length of the peripheral edge portion, the shape and arrangement of the through holes, and the number of the above-mentioned overlapped thermoplastic resin strings which form the through holes are determined by the material and thickness of the thermoplastic resin string. Since it is set based on the sheath width, the balance between the connection strength and the peeling strength of the thermoplastic resin strings that are overlapped is adjusted, and the stable connection strength is ensured by the connection part formed in the through hole, and the thermoplasticity is also improved. When the connecting portions of the stacked thermoplastic resin strings are peeled off to use the resin strings, the resin strings are not torn at the connecting portions.

The method for manufacturing a wound body of the thermoplastic resin cord according to the present invention comprises a plurality of core pieces arranged along the circumference, each of which is movable in the diametrical direction, and the core pieces are expanded in the diametrical direction. In the state, the outer surface of each core piece forms a part of the cylindrical surface, and a projecting member for forming a hole that is movable to an inner position of the core and a position projecting from the outer surface of the core piece is used. In the state where each core piece is expanded in the diametrical direction, the end portion of the thermoplastic resin string is fixed, and then the core is rotated to wind the thermoplastic resin string a plurality of times around the outer periphery of the core, and then the protruding member in the heated state Project from the outer surface of the core piece, pierce a plurality of thermoplastic resin strings wound on the core to form a through hole, and by connecting the plurality of thermoplastic resin strings by fusing the peripheral portions of the through holes, projecting Move the member inward of the core,
It is characterized by forming a wound body by continuously winding a thermoplastic resin string.

As another manufacturing method, it is composed of a plurality of core pieces arranged along the circumference, each of which is capable of advancing and retracting in the diametrical direction, and each of the core pieces is expanded in the diametrical direction. A core whose outer surface forms a part of a cylindrical surface and a projecting member for forming a hole that is arranged outside the core, and in a state where each core piece of the core is expanded in the diameter direction, a thermoplastic resin After fixing the end of the string and then rotating the core to wind the thermoplastic resin string around the core multiple times, the heated protruding member is placed outside the plurality of thermoplastic resin strings wound around the core. While piercing from to form a through hole,
After connecting a plurality of thermoplastic resin strings by fusing the peripheral portions of the through holes, the protruding member is pulled out from the through holes, and the thermoplastic resin strings are continuously wound to form a wound body. it can.

In the above manufacturing method, the through hole is formed by heating the projecting member for forming holes to a temperature not lower than the melting temperature of the thermoplastic resin string and piercing the heated thermoplastic resin string into the stacked thermoplastic resin string. As the protruding member for forming the hole, for example, a needle-shaped body or a plate-shaped protruding member can be cited.

As yet another manufacturing method, a plurality of core pieces arranged along the circumference and each of which is capable of advancing and retracting in the diametrical direction are formed, and the core pieces are expanded in the diametrical direction. Using a core whose outer surface forms part of a cylindrical surface,
With each core piece of the core expanded in the diametrical direction, fix the end of the thermoplastic resin string, and then rotate the core to wind the thermoplastic resin string around the outer periphery of the core a plurality of times, and then to the core. A plurality of wound thermoplastic resin strings, while forming a through hole in this thermoplastic resin string by irradiating a laser beam, after connecting the plurality of thermoplastic resin strings by fusion of the peripheral portion of the through hole, Another method is to form a roll by continuously winding a thermoplastic resin string.

In any of the above-mentioned manufacturing methods, the total peripheral length of the peripheral edge, which is the length around the through-hole, the shape and arrangement of the through-hole, and the number of thermoplastic resin strings for forming the through-hole are It is set so that the balance between the connection strength and the peel strength of the superposed thermoplastic resin strings is adjusted based on the material, thickness and width of the thermoplastic resin strings.

In the above manufacturing method, when a needle-shaped body is used as the projecting member for forming a hole, a through hole having a circular cross section is formed, and when a plate-shaped projecting member is used, a rectangular shape or the like is formed. A through hole having a shape corresponding to the cross-sectional shape of the protruding member used is formed. Further, when forming a through hole by a laser beam, the material is removed by using the laser beam to form a desired through hole, but a consumable jig such as a needle-shaped body or a plate-shaped protruding member is required. Instead, it is possible to form a through hole having a smaller diameter than those methods.

A stable connecting strength is ensured by the connecting portion formed in the through hole, and the connecting portion is connected so as not to tear when the thermoplastic resin string is peeled off. The strength and peel strength are adjusted to an appropriate balance. That is, the peel strength can be set by the total extension length of the hole edge portion of the through hole, and also based on the material, thickness and width of the thermoplastic resin string such as the shape and position of the through hole and the number thereof. The tensile strength in the width direction of the thermoplastic resin string can be controlled.

The winding body of the thermoplastic resin cord of the present invention is a winding body in which a large number of thermoplastic resin cords are wound in a coil shape without a winding core. It is characterized in that a loop body is formed by fusing and a thermoplastic resin string is wound around the loop body.

According to the wound body of the thermoplastic resin cord of the present invention, since the plurality of the thermoplastic resin cords superposed on each other are connected by heat fusion, the loop body (core) having a stable connecting strength. Is obtained. As a result, there is no collapse of the winding from the inside of the roll, and moreover, a plurality of thermoplastic resin strings are wound in a stable state, resulting in the originally intended use as the thermoplastic resin string. Becomes

The method for manufacturing a wound body of the thermoplastic resin string according to the present invention comprises a plurality of core pieces arranged along the circumference, each of which is capable of advancing and retracting in the diameter direction, and the core pieces are expanded in the diameter direction. In the state, the outer surface of each core piece forms a part of the cylindrical surface, and using a hot trowel for fusing, with each core piece of the core expanded in the diameter direction, the end of the thermoplastic resin string After fixing the part and then winding the thermoplastic resin string around the core multiple times by rotating the core, apply a hot iron for fusing to the multiple thermoplastic resin strings wrapped around the core After the thermoplastic resin strings are joined by heat fusion, the thermoplastic resin strings are continuously wound to form a wound body.

As another manufacturing method utilizing heat welding, a plurality of core pieces arranged along the circumference and each of which is movable in the diametrical direction are formed, and the core pieces are expanded in the diametrical direction. , The outer surface of each core piece forms a part of the cylindrical surface, and with each core piece of the core expanded in the diameter direction, fix the end of the thermoplastic resin string and then rotate the core. By winding the thermoplastic resin string around the core multiple times by doing so, after connecting the plurality of thermoplastic resin strings wound on the core by heat fusion by the ultrasonic welding method, the thermoplastic resin string is continuous. It is also possible to cite a method of forming a wound body by winding the material.

The ultrasonic welding method is a welding method in which a resin or the like is melt-bonded by frictional heat generated by ultrasonic vibration, and is widely used for processing thermoplastic resin films, sheets, fibers, molded products and the like. It's being used. In this type of ultrasonic welding, vibration of 15 to 60 kHz is usually used. In addition, an ultrasonic welding machine with an output of 50 W to 4 kW is currently in practical use.

The winding body of the thermoplastic resin cord of the present invention is a winding body in which the thermoplastic resin cord is wound in a coil shape a large number of times without a winding core. A thread-shaped reinforcing material is passed across the width direction of the winding body, the reinforcing material reinforces the winding state of the plurality of thermoplastic resin strings to form a loop body, and the thermoplastic resin string is wound around the loop body. Is characterized by being present.

According to the wound body of the thermoplastic resin cords of the present invention, a plurality of the thermoplastic resin cords are provided by interposing the cord-shaped or thread-shaped reinforcing material between the plural thermoplastic resin cords which are superposed on each other. Since the loop body (winding core) is formed by increasing the connection strength of the winding body, there is no collapse of the winding from the inside of the winding body, and more than one thermoplastic resin string is wound in a stable state. As a result, it can be used as a thermoplastic resin string which is the original purpose.

In the wound body of the thermoplastic resin cord of the present invention, as the reinforcing material to be passed in the width direction of the wound body, the winding start portion of the wound body of the thermoplastic resin cord is folded back in the width direction of the wound body. Alternatively, a string or thread different from the wound thermoplastic resin string may be used. Furthermore, if these reinforcing materials are woven into a plurality of thermoplastic resin strings that are wound in a coil shape and are passed over in the width direction of the winding body, the bonding strength of the loop body can be further increased.

The method of manufacturing a wound body of the thermoplastic resin string of the present invention comprises a plurality of core pieces arranged along the circumference and each of which is movable in the diametrical direction, and the core pieces are expanded in the diametrical direction. In the state, using the core whose outer surface of each core piece forms a part of the cylindrical surface, in a state in which each core piece of the core is expanded in the diameter direction, after fixing the end portion of the thermoplastic resin string, the core While winding the thermoplastic resin string a plurality of times around the core outer circumference by rotating, between the thermoplastic resin string wound on the core, a string-like or thread-like reinforcing material is passed in the width direction of the winding body,
It is then characterized by forming a roll by continuously winding a thermoplastic string.

A packing machine provided with a band reel for a winding body without a winding core of the present invention includes a band reel for supporting a winding body in which a thermoplastic resin string is wound in a coil shape many times without a winding core. A packing machine for packing a packed object with this thermoplastic resin string, wherein the band reel has a hollow portion of the wound body formed therein, and the inner surface of the rolled thermoplastic resin string has a tubular shape. And a support having a curved surface that conforms to the curved surface of the inside of the roll, the support being characterized by being movable back and forth on the inside of the roll. The band reel is preferably provided with a locking portion such as a gap or a hole for inserting the winding start end of the thermoplastic resin string.

Since the packing machine of the present invention having the above-mentioned structure is equipped with the band reel provided with the support having the curved surface along the curved surface of the winding body, the thermoplastic resin cord is pulled by the force of pulling the thermoplastic resin string. The resin string does not bite into the winding body to deform the winding body, and the winding collapse from the inner surface of the winding body does not occur. In addition, the support can move back and forth on the inner surface of the roll,
If the support is retracted when setting the winding body, even an eccentric winding body can be fitted into the band reel without being collapsed from the inner surface, and then the support body is closely attached to the inner surface of the winding body. If so, the roll is in a mounted state in which it is in close contact with the support.

Further, when the band reel is provided with a locking portion such as a gap or a hole for inserting the winding start end of the thermoplastic resin string and the end of the resin string is fixed to the band reel, The timing is such that the end of the roll of thermoplastic resin string becomes free only after the end of use, so the last part of the thermoplastic resin string comes off before it is shaken by the rotational force of the band reel. It is possible to avoid the risk of hitting an operator by doing so.

[0035]

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

FIG. 1 is an external perspective view showing an embodiment of a wound body of a thermoplastic resin cord of the present invention, and FIG. 2 is a longitudinal sectional view of a main part of the embodiment.

The wound body 10 is formed by winding a plurality of thermoplastic resin strings 1 in a state where the hollow portion 10a is formed. The thermoplastic resin string 1 is made of polypropylene olefin resin that is stretched about 5 to 10 times and has significantly improved tensile strength, and the width of the thermoplastic resin string 1 is about 10 mm to 20 mm.
A material having a thickness of about 0.3 mm to 1 mm is often used. Any thermoplastic resin may be used as long as it has improved tensile strength by stretching, and may be, for example, polyester or polyamide. 1 such thermoplastic resin string 1
One roll 1 in the state of being wound around 000m-2500m
It is set to 0. The size of this roll 10 is 100 mm to 25 in width.
0 mm, inner diameter 200 mm to 410 mm, outer diameter 300 mm
The weight is about 650 mm and the weight is about 10 kg to 25 kg.

In this embodiment, as shown in FIG. 2, in the winding body in which the thermoplastic resin string is wound in a coil shape many times without the winding core, the winding start end of the thermoplastic resin string 1 is wound. Through holes 2 are provided in a plurality of thermoplastic resin cords 1 ... 1 superposed in the vicinity of the portion 1a, and the plurality of thermoplastic resin cords 1 ... 1 are formed by fusing the peripheral portions of the through holes 2. The loop body 11 is connected to each other by the connecting portion 3.
Are formed.

Here, the through hole 2 is processed by piercing a heated needle-shaped or plate-shaped protruding member from one surface of a plurality of thermoplastic resin strings 1 ... Since the through hole 2 is opened by processing by irradiation, the through hole 2 is opened so as to penetrate at least one layer of the laminated multiple layers,
As shown in FIG. 2A, a thermoplastic resin string 1 having a plurality of layers
1 or through one or more layers of thermoplastic resin as shown in FIG. 2B, and then the through hole 2 reaches the middle of any one layer.

FIG. 3 and FIG. 4 are views for explaining the through-holes to be formed. The upper drawing is a top view of the through-holes formed in the thermoplastic resin string, and the middle and lower openings are through-holes, respectively. It is a top view and a side view of a projecting member used for forming a hole.

The through-hole 2 is formed by using the member shown in FIGS. 3 and 4 and piercing a plurality of thermoplastic resin cords 1 ... 1 while heating the member at a temperature higher than the melting temperature of the thermoplastic resin cord. To be done. At this time, the peripheral portion of the through hole 2 is melted, and the boundary portions of the thermoplastic resin strings 1 that are vertically overlapped are welded to each other to form the connecting portion 3. A plurality of thermoplastic resin strings 1 ... 1 having the through holes 2 formed in this way
In the case of the winding, the wound body itself, which has been wound a plurality of times from the beginning of winding, serves as a winding core (loop body 11), so that stable connection strength can be ensured and winding collapse from the inner surface does not occur.

The configuration of the through hole 2 is based on the material, thickness and width of the thermoplastic resin string 1 in consideration of the above-mentioned connection strength and peeling strength, and the total extension length and shape of the peripheral portion of the through hole 2, The arrangement and the number of thermoplastic resin strings 1 to be penetrated are set.

First, the shape of the through hole 2 is shown in FIG.
If the through-holes 2a and 2b whose cross-sectional shape is circular are
The degree of penetration depends on the material and thickness of the thermoplastic resin string.
Select the diameter as a barometer for the total length of the peripheral edge.
It can be easily set by and. FIG. 6 shows a thickness of 0.65 m.
m, width 15.5 mm PP band (made of polypropylene
The needle-shaped member is used to melt the PP band
Multiple PP vans stacked in a state of being heated above the melting temperature
Pierced into the hole to form a through hole of each hole diameter and connected
PP band at each pulling speed of 200 mm / min
Shows the results of measuring the pore size and peel strength when peeled.
You In this case, P₁, P_TwoThen PP band is through hole
At the connecting part formed on the periphery of the
PP bars that are smoothly overlapped without tearing
I was able to peel off the cord, but P_Three, P _FourThen of the resin string
Resin was torn from the connection. PP band or PET band
(General of polyethylene terephthalate resin string
Such a pull is not possible with a thermoplastic resin string
To prevent tearing problems, the smaller the thickness, the smaller the hole diameter.
It is desirable to make it small, and in the PP band 0.65 m
0.6 mm or less for m thickness, 0.5 for PET band
It is necessary to have a thickness of mm and 1.2 mm or less
It However, as the hole diameter is reduced, the width direction of the band
It has been found that the tensile strength of
Place the through holes on both ends of the band, and
It is necessary to arrange the above-mentioned through holes at both ends of
It

FIG. 5 shows an example of the arrangement of the through holes with respect to the entire width of the roll. This figure shows the outer circumference of the roll as a plan view and shows the transport test, vibration test, automatic test for the roll of the present embodiment in which the through holes as shown in each of these examples are arranged. I checked the roll collapse from the inside of the roll until it was set on the band reel of the packing machine, and actually tested the number of troubles such as band clogging by mounting it on the packing machine. Does not occur,
Good results have been obtained. Further, when the through hole has a small-diameter circular shape as shown in FIG. 3, this through hole is preferable because it is not conspicuous and does not give a completely different appearance from the appearance of a normal packing string. By appropriately selecting the number, the peel strength and the tensile strength in the width direction can be made to be preferable values.

On the other hand, the through hole 2 having the shape shown in FIG.
In the case of c, 2d, 2e, 2f, and 2g (hereinafter referred to as deformed holes), as in the case of the circular through hole described above, based on the material, thickness, and width of the thermoplastic resin string, the total peripheral portion of the through hole is By setting the extension length, the shape and the arrangement thereof, and the number of the thermoplastic resin strings to be penetrated, the peel strength and the tensile strength in the width direction can be set to preferable values. In the case of irregular shaped holes,
It is necessary to form the thermoplastic resin string so that the longitudinal direction of the cross-sectional shape of the through hole is along the length direction of the thermoplastic resin string. This is because when the shape of the through hole in the longitudinal direction is arranged so as to cross the length direction of the thermoplastic resin string, the above-mentioned tearing trouble is likely to occur at the time of peeling.

FIG. 7 shows the case where the through-hole is circular (A ₁ : hole diameter 0.55 mm, A ₂ : hole diameter 1.00 mm) and the deformed hole is rectangular (B ₁ : 0.55 × 5 mm,
B ₂ : 0.55 × 8 mm) shows the relationship between the peel strength and the tensile strength in the width direction. In the case of a deformed hole, if the longitudinal direction of the cross-sectional shape is arranged along the length direction of the thermoplastic resin string, there is no great change in the peel strength as shown in FIG. 7 and the tensile strength in the width direction. Is improved. The PP band has a thickness of 0.65 mm and has a peel strength of 400.
It is desirable that the tensile strength in the width direction is less than or equal to gf and about 2000 gf. As described above, in the case of a deformed hole, the peeling strength is made substantially constant, and the tensile strength in the width direction is increased, whereby the occurrence of tearing troubles can be prevented, and a wound body having no collapse can be obtained. In the case of this irregularly shaped hole, it is preferable that the number of holes can be reduced and an application method in which the effect of preventing the collapse of winding can be ensured becomes possible. In addition, as a material of the protruding member used as a means for forming the through hole, a material having a high thermal conductivity such as a material plated with copper is preferably used. In addition, as a method of forming the through hole, it may be formed by a laser described later.

Here, in the wound body of the thermoplastic resin string, through holes may be provided in a plurality of the thermoplastic resin strings which are superposed in the vicinity of the end of the winding end of the thermoplastic resin string. In this case, It is possible to prevent the collapse of the winding from the end of the winding end, and conventionally, the end of the winding end is sealed by heat fusion in a separate process, or the end treatment is performed by tape sticking, etc. There is an advantage that extra steps can be omitted.

Next, a method of manufacturing the wound body of the thermoplastic resin string according to the embodiment of the present invention will be described. FIG. 8: is a figure explaining operation | movement of a winding device which shows the manufacturing method of the wound body of the thermoplastic resin string of this invention over time, when a through-hole is formed by the needle-shaped body 14. FIG.

As shown in FIG. 8A, the cylindrical core 1
2 is divided into four core pieces 21 ... 21 in the circumferential direction, and is made to move back and forth in the direction of arrow S.
A cylindrical flap 13 is divided into four flap pieces 31, ... 31 in the circumferential direction in the inside of 2, and can be moved back and forth in the direction of arrow S. Each flap piece 31 ... 31 has a needle-like body 14 protruding toward the side in contact with the core piece 21.
A heater (not shown) is incorporated in each flap piece 31..31 for providing the needles 14 and heating the needles 14. Also, this flap piece 31 ...
A heat insulating material is provided on the surface of 31 to prevent the core 12 from being heated. And each core piece 21 ...
The flap pieces 31 ...
A needle through hole (not shown) is formed in advance in a portion where the needle contacts.

Using the apparatus having such a configuration, first, referring to FIG.
As shown in (b), the core pieces 21, ..., 21 are expanded in the diametrical direction, and the core pieces 21 ,. After fixing the ends of the thermoplastic resin string 1 in the gaps 15 at positions sandwiched by the string stoppers 22, the arrow T shown in FIG.
Direction, and the thermoplastic resin string 1 is wound in a coil form a plurality of times, and as shown in FIG. 8 (d), the flap pieces 31 ... 31 are respectively attached to the core pieces 21. The needle-shaped body 14 that is heated to a temperature higher than the melting temperature of the thermoplastic resin string is passed through the needle through-holes of the core piece that are formed in advance in the direction of arrow S, and the heat is wound in multiple layers. Stick the plastic resin string 1. Through this, through holes are simultaneously formed at four positions of the thermoplastic resin string 1, and the peripheral portions of the through holes are melted, so that the through holes formed in the thermoplastic resin string 1 laminated in a plurality of layers are formed. The boundary portions of the peripheral portion are connected in a welded state. Then, as shown in FIG. 8E, each flap piece 31.
1 in the direction of arrow V to move the needle-shaped body 14 into each core piece 2
1. ・ 21 Pull out the thermoplastic resin string of the specified length 1
Is wound into a coil to complete the wound body 10 as shown in FIG. After the winding body 10 reaches a predetermined length,
By retracting and closing the core 12 in the direction of arrow V,
The completed roll 10 is removed. In the example of the present embodiment, since the polypropylene string is used as the thermoplastic resin string, the temperature of the needle-shaped body 14 is higher than the melting temperature of the resin.
Set to 0 ° C. Further, although the needle-shaped bodies 14 are arranged one for each flap piece 31 ... 31, as described above, they may be provided at several places including both ends in the full width direction of the winding body 10 as required. Good, adjacent flap pieces 31 ... 3
The position and the number of the needle-shaped bodies 14 may be changed for each one, for example, by shifting the position of the needle-shaped bodies 14.

That is, the total length of the peripheral portion of the through hole, the shape and arrangement of the through hole, the number of the thermoplastic resin strings 1 overlapped with each other to form the through hole, and the like. Based on the material, the thickness and the width, the balance between the connection strength and the peeling strength of the laminated thermoplastic resin strings 1 is set. Further, instead of the needle-shaped body 14, the through hole may be formed by a plate-shaped projecting member as shown in FIG. 4, which is effective in providing a desired deformed hole.

Further, in the above-described manufacturing method of the present embodiment, the through hole is provided from the inside of the through hole. However, the through hole may be provided from the outside. 9 is shown in FIG. 9 and will be described below.

As shown in FIG. 9A, the cylindrical core 1
2 is divided into four core pieces 21 ... 21 in the circumferential direction, and is movable back and forth in the direction of arrow S. First, FIG.
As shown in (b), the core pieces 21, ..., 21 are expanded in the diametrical direction, and the core pieces 21 ,. After fixing the end portion of the thermoplastic resin string 1 in the gap 15 at a position sandwiched by the string stoppers 22, and rotating the thermoplastic resin string 1 in the form of a coil by rotating in the direction of the arrow T , Fig. 9
As shown in (c), from the outside of the thermoplastic resin string 1 overlapping the end of the thermoplastic resin string 1 and the outer periphery of the end,
Needle-like bodies 24 heated to a temperature higher than the melting temperature of the thermoplastic resin string by heating with a heater are pierced into the thermoplastic resin string 1 wound a plurality of times to form a through hole, and the peripheral portion thereof is melted. Then, the boundary portions of the thermoplastic resin string 1 that is wound a plurality of times and wound are joined together in a welded state. Then, after the core 12 has rotated slightly, FIG.
As shown in (d) and FIG. 9 (e), the needle-like bodies 24 that are respectively heated are pierced at different positions of the thermoplastic resin string 1 that is wound a plurality of times, and through holes are similarly formed. Along with it, the thermoplastic resin string 1 is wound several times
Connect the boundary parts of. After welding the thermoplastic resin string 1 at a plurality of different positions as described above, the needle-shaped body 24 is retracted, and the core 12 is rotated in the direction of arrow T as shown in FIG. By winding the thermoplastic resin string 1 having a length in a coil shape, as shown in FIG. 9 (g),
The roll 10 is completed. Then, the completed winding body 10 is removed by retracting the core 12 in the direction of arrow V and closing it.

In the embodiment shown in FIGS. 8 and 9, the needle-like body 24 is formed into a substantially same circumferential shape as the winding core of the winding body with respect to the thermoplastic resin string 1 wound a plurality of times. While moving in the diametrical direction of the arranged core and piercing the thermoplastic resin string 1 wound a plurality of times and wound to form a through hole,
The boundaries of the thermoplastic resin string 1 having a plurality of layers are connected to each other, but the rotation of the core (and the flap in the method of FIG. 8) is stopped during a few steps of forming the through hole. Alternatively, the needle-like body 24 may be rotated in synchronization with the rotation of the core (while the core and the flap are continuously rotated in the method of FIG. 8), and the above-described through hole may be formed. Good.

In the manufacturing method of the present embodiment described above, when the through hole is formed, the heated needle-shaped body or the plate-shaped protruding member is pierced into the thermoplastic resin string. A method of using a laser as a means for forming the can also be adopted. An embodiment of a manufacturing method using the laser will be described below. FIG. 10 is a diagram showing this embodiment over time.

As shown in FIG. 10 (a), the cylindrical core 12 is divided into four core pieces 21..21 in the circumferential direction, and is made movable in the direction of arrow S. The air cylinder 31 drives the pieces 21 ... This core piece 2 by the air cylinder 31
1 ... 21 is expanded in the diameter direction, and these core pieces 21 ...
21 are arranged in substantially the same circumference, and then the core pieces 21 ...
10 (b), the end portion of the thermoplastic resin string 1 is sandwiched and fixed by a string stopper 22 in one of the gaps 15 in FIG.
As shown in, the thermoplastic resin string 1 is wound in a coil shape by rotating in the direction of arrow T. As shown in FIG. 10C, and after winding, for example, about three times, the rotation of the core 12 is stopped, and the laser beam is irradiated by the laser unit 30 to form a through hole having a predetermined hole diameter. The laser unit 30 uses a carbon dioxide gas laser using carbon dioxide gas as a laser medium. The operating current of this laser unit is 6A, output is 27W, and 10.5 ~
A laser beam having a wavelength of 10.7 μm is output. The processing time for forming the through holes is 0.1 to 5 seconds, but preferably about 0.5 seconds affects the production line speed of the thermoplastic resin string 1. It is suitable because there is no

Subsequently, as shown in FIG. 10D, every time the core 12 is rotated ¼, the rotation is stopped and a laser beam is irradiated to form a through hole having a predetermined hole diameter. A desired through hole is formed in each core piece 21. Then, after that, the laser unit 30 is retracted from the core as shown in FIG.
Rotate the core in the direction of arrow T as shown in (f),
By winding the thermoplastic resin string 1 having a predetermined length in a coil shape, the winding body 10 shown in FIG. 10 (g) is completed. Then, by driving the air cylinder 31, the core 12 is retracted in the direction of the arrow V and closed to complete the completed roll 1.
Remove 0.

Although the carbon dioxide gas laser is used as the laser unit in this embodiment, the invention is not limited to this, and a helium / neon laser, a semiconductor laser or the like may be used. The manufacturing method of the embodiment of the present invention using this laser device is excellent in that small through holes can be formed accurately and stably. Furthermore, the manufacturing method using a laser beam has few consumables and maintenance is easy.

In any of the manufacturing methods described above, when the through hole is formed, the total peripheral length of the through hole and the shape of the through hole are determined based on the material, thickness and width of the thermoplastic resin string. And the arrangement and the number of layers of the thermoplastic resin strings to be penetrated, while keeping the connection strength of the thermoplastic resin strings to be overlapped to some extent, and when the thermoplastic resin strings are pulled out and used. , Set these so that the peeling strength can be kept low so that the resin string can be pulled out smoothly.

11 to 13 are side views schematically showing the structure of another embodiment of the winding body of the thermoplastic resin string of the present invention.

In this embodiment, the thermoplastic resin string 1 ...
A plurality of thermoplastic resin strings 1 superposed on each other in a winding body in which 1 is wound in a coil shape many times without a winding core.
.... 1 are connected by the heat-sealing portion 103 to form the loop body 1
1 is formed, and the thermoplastic resin string 1 is formed on the loop body 11.
・ 1 is wound.

More specifically, the thermal irons 104 (see FIG. 15) are arranged inside the plurality of thermoplastic resin cords 1 ··· that are overlapped with each other, and the first layer of the thermoplastic resin cords 1 adjacent to each other is arranged. Insert the iron tip 141 of the thermal iron 104 between the
A loop body 11 of the thermoplastic resin string 1 is formed by fusion-bonding (thermal fusion bonding) the side end of the first layer thermoplastic resin string 1 and the surface of the second layer thermoplastic resin string 1. However, it is characterized in that a thermoplastic resin string is wound around the loop body 11.

Next, a method of manufacturing the wound body of the thermoplastic resin string of this embodiment will be described with reference to FIGS. 14 to 17.

First, in the manufacturing method of this example, the core 102 is
Then, the thermoplastic resin string is wound using the eight thermal irons 104.

The core 102 is arranged along the circumference of eight core pieces 121, ...
1, the core pieces 121 are formed so that the outer surface of each core piece 121 forms a part of a cylindrical surface in a state where the core pieces 121 are expanded in the diametrical direction.
Thermal trowels 104 are arranged between the two. These thermal irons 104 ... 104 can be moved back and forth in the diameter direction of the core 102 by a moving mechanism (not shown).

As shown in FIGS. 15 to 17, the thermal trowel 104 includes an iron body 140 in which a plurality of iron tips 141 each having a trapezoidal cross section are formed at a pitch corresponding to the winding interval of the thermoplastic resin string 1. Each of the tips 141 is composed of a heater 142 that heats up to the melting temperature of the thermoplastic resin string 1, and a cover 143 made of a heat insulating material that covers a portion other than the tips 141.

In the manufacturing method of this example, first, as shown in FIG. 14 (a), each core piece of the core 102 is expanded in the diameter direction so that each core piece 121 ... In the arranged state, the end portion of the thermoplastic resin string 121 is fixed to the one core piece 121 by the string stopper 22.

Next, the core 102 is rotated in the T direction, the thermoplastic resin string 1 is wound around the core 102 a plurality of times, and then, as shown in FIG. As shown in FIGS. 15 to 17, the first tip of the thermoplastic resin cord 1 and the thermoplastic resin cord 1 are heated to the melting temperature of the thermoplastic resin cord 1 ... 1 and the side end of the thermoplastic resin string 1 of the first layer and the surface part of the thermoplastic resin string 1 of the second layer are heat-welded to connect the thermoplastic resin strings 1 to each other. Then, the loop body 11 (see FIG. 11) is formed. After this, each heat iron 1
04 ... 104 by retracting each tip 141 ...
1 is pulled out from between the thermoplastic resin strings 1 of the first layer (see FIG.
4 (c)), by winding the thermoplastic resin string 1 of a predetermined length into a coil, the winding body 10 is completed as shown in FIG. 14 (d). Then, each core piece 121 of the core 102
.. Retract 121 and eject the roll 10.

In the manufacturing method shown in FIG. 14 to FIG. 17, the rotation of the core 102 may be stopped at the time of heat-sealing the thermoplastic resin string 1 wound a plurality of times. Alternatively, the thermal iron 104 is synchronized with the rotation of the core 102.
The heat fusion may be performed while rotating the.

Here, in the embodiment of FIGS. 14 to 17,
1 out of the thermoplastic resin string 1 that is wound a plurality of times in a coil shape
Although the tip 141 of the hot iron 104 is inserted between the thermoplastic resin cords 1 of the layer to perform the heat fusion, the present invention is not limited to this and other methods can be adopted.

For example, as shown in FIGS. 18 and 19, a soldering iron having a tip 144 is arranged at a portion where the first layer thermoplastic resin string 1 and the second layer thermoplastic resin string 1 overlap. 114, the tip 144 is penetrated through the first layer of the thermoplastic resin string 1 to form the second layer of the thermoplastic resin string 1.
A method may be mentioned in which the thermoplastic resin strings 1 of these two layers are joined by heat fusion by being pushed in halfway. In addition, as shown in FIGS. 20 and 21, a tip 144 that penetrates the first layer of thermoplastic resin string 1 is formed.
Another example is a method of heat-sealing the thermoplastic resin string 1 by using the heat iron 124 having both the iron tips 141 inserted between the first layer thermoplastic resin strings 1. it can. In this case, the strength of the loop body can be further increased.

Further, as described above, the trapezoidal tip 1
22. Instead of the hot iron with 41, 144 (projections), FIG.
Also, as shown in FIG. 23, a method of heat-sealing the thermoplastic resin string 1 by using a flat iron trowel 134 having a flat contact surface of the thermoplastic resin string 1 can also be mentioned. In addition, when using such a flat plate-shaped heat iron 134, a strong fusing strength can be obtained by pushing the heat iron 134 to a position where the thermoplastic resin string 1 of the first layer is melt-cut.

Here, in the above embodiment, an example in which a hot iron is used for heat fusion when forming the loop body to be the winding core has been shown, but the present invention is not limited to this, and for example, Other fusing methods such as ultrasonic welding may also be used.

An embodiment of a manufacturing method using the ultrasonic welding method will be described with reference to FIGS. 24 and 25.

First, in the manufacturing method of this example, the core 12
Then, the thermoplastic resin string is wound using the ultrasonic welding machine 204. As shown in FIG. 24 (a), the core 12 is composed of four core pieces 21 ... 21 arranged along the circumference and each of which is movable back and forth in the diameter direction (S direction). The outer surface of each core piece 21 forms a part of the cylindrical surface when 21 is expanded in the diameter direction. An anvil 242 is provided on each core piece 21. The anvil 242 is arranged at a position facing the horn (vibration transmitting metal fitting) 241 of the ultrasonic welding machine 204 during the rotation process of the core 12.

In the manufacturing method of this example, first, as shown in FIG. 24 (b), the core pieces 21, ..., 21 are expanded in the diameter direction, and these core pieces 21 ,. After arranging them in the shape of a strip, the end portions of the thermoplastic resin string 1 are fixed in one of the gaps 15 of the core pieces 21 ... After winding the thermoplastic resin string 1 in a coil shape a plurality of times and winding it, the tip of the horn 241 of the ultrasonic welding machine 204 is attached to the thermoplastic resin string 1 from the outside as shown in FIGS. In the pressed state, ultrasonic vibration (15-60kH
z) is applied, and the thermoplastic resin strings 1 wound in a plurality of layers are melt-bonded (heat-bonded) to connect the thermoplastic resin strings 1. Then, after the core 12 is slightly rotated, as shown in each of FIGS. 24D and 24E, the horns 241 are respectively placed at different positions of the thermoplastic resin string 1 that is wound a plurality of times. By pressing the tip of the above and performing heat fusion in the same manner, the thermoplastic resin strings 1 wound a plurality of times are connected.

After heat-sealing a plurality of different positions of the thermoplastic resin string 1 as described above, the core 12 is rotated in the direction of arrow T as shown in FIG. As shown in FIG. 24 (g), the wound body 10 is completed by winding the thermoplastic resin string 1 of the above-mentioned shape into a coil. Then, the completed winding body 10 is removed by retracting the core 12 in the direction of arrow V and closing it.

In the manufacturing method shown in FIG. 24, the core 12 may be stopped from rotating when the thermoplastic resin string 1 wound a plurality of times is thermally fused. The heat fusion may be performed while rotating the horn 204 in synchronization with the rotation of the core 12. However, in consideration of the relative alignment between the anvil 242 and the horn 241, and the reliability of the heat fusion, the rotation of the core 12 is considered. It is preferable to stop the heating and perform the heat welding.

Here, in the case where the thermoplastic resin is heat-sealed by using the ultrasonic welding method, the shape of the heat-sealed portion can be adjusted by appropriately selecting the shape of the horn.
As the shape of the heat-sealed portion, for example, FIG.
As shown in (d), a circular, rectangular, rhombic, or linear heat-sealing pattern, or as shown in FIG. 26 (e), two or more circular (or rectangular, etc.) heat-sealing portions 203 are provided. The heat fusion pattern formed at two locations (or a plurality of locations) can be mentioned.

Further, according to the manufacturing method using the ultrasonic welding method, there are advantages that the consumables are few and the maintenance is easy. The processing time required for heat welding by ultrasonic welding is 0.1 seconds to several seconds.
Considering the production line speed of, the time is preferably about 0.5 seconds.

FIG. 27 is a side view schematically showing the structure of another embodiment of the wound body of the thermoplastic resin string of the present invention.

In this embodiment, the thermoplastic resin string 1 ...
In a winding body in which 1 is wound in a coil shape many times without a winding core, a plurality of thermoplastic resin strings 1 ... 1 of the first layer are connected by threads 301 and 302 extending in the width direction of the winding body. This is characterized in that the loop body 11 is formed, and the thermoplastic resin string 1 having a predetermined length is wound around the loop body 11. And in this embodiment, the thread 30
Since 1, 302 are laid in the first layer of the thermoplastic resin string 1 ... in the width direction of the winding body, the connection strength of the loop body 11 is further increased, It is possible to reliably prevent the collapse of the winding from the inner surface.

Next, a method for manufacturing the wound body of the thermoplastic resin string of this embodiment will be described with reference to FIGS. 28 to 30.

First, in the manufacturing method of this example, the core 12
Then, the thermoplastic resin string is wound using the thread weaving machine 304 and the thread feeding machine 305 (FIG. 30). The core 12 is shown in FIG.
As shown in Fig. 4, each of the four core pieces 21 ... 21 is arranged along the circumference and is movable in the diametrical direction (S direction), and the core pieces 21 ... 21 are expanded in the diametrical direction. The outer surface of each core piece 21 forms a part of the cylindrical surface, and the yarn weaving tools 304, ... Are arranged between the core pieces 21.

As shown in FIG. 29, the thread weaving tool 304 is composed of a hook 341 and a support tool 342, and is given a rotary motion by a rotary mechanism (not shown) to allow the outer peripheral surface of the core 21 (first layer). It is possible to hook the thread 301, which has been passed over the thermoplastic resin string 1), with the hook 341 to draw it in the U-shape inside the core 12. In addition, the yarn feeding machine 3
Reference numeral 05 denotes an operation to be described later, which can pass the yarns 301 and 302 to the upper (outer side) and lower (inner side) portions of the core 12 along the winding width direction. Since such a yarn feeding machine 305 can be easily realized by applying a mechanism generally used in the field of textiles and the like, detailed description of a specific configuration will be omitted here.

In the manufacturing method of this example, first, referring to FIG.
As shown in FIG. 8, each core piece 21 ... Of the core 12 is expanded in the diameter direction, and each core piece 21 ... 21 is arranged on the same circumference. String 1
After fixing the ends of the
And the thermoplastic resin string 1 is wound around the core 12 by one layer to stop the rotation of the core 12.

Next, as shown in FIGS. 29 (a) and 30 (a), the hook 341 of the thread weaving tool 304 is arranged so as to project above the core 12, and only one layer is wound around the core 12. After the thread 301 is crossed over the wound thermoplastic resin string 1 in the width direction of the winding body, as shown in FIG. 29, the hook 341 of the thread weaving tool 304 is rotated toward the inside of the core 12 to fix the thread 301. , The inside of the core 12 is pulled through the space between the thermoplastic resin strings 1 in a hoop shape (FIG. 29).
(B), FIG. 30 (b)).

Next, as shown in FIG. 30 (c), the yarn 302 is fed from the yarn feeding machine 305 along the vicinity of the inner surface of the core 12, and the yarn 302 is passed through the U-shaped portion of the preceding yarn 301. 1 by these two threads 301, 302
The loop body 11 is formed by connecting the thermoplastic resin strings 1 of the layers to each other.
To form. The hook 341 of the thread weaving tool 304 is moved (rotated) to a position where it does not interfere with the threads 302 and 301 and the core 12 after passing the threads 302.

After the loop body 11 forming step is completed, the core 12 is rotated to wind the thermoplastic resin string 1 of a predetermined length in a coil shape, and the wound body of the thermoplastic resin string 1 is wound. Get 10.

FIG. 31 is a side view schematically showing the structure of another embodiment of the winding body of the thermoplastic resin string of the present invention.

In this embodiment, the thermoplastic resin string 1 ...
In the winding body in which 1 is wound in a coil shape many times without a winding core, the winding start portion 1b of the thermoplastic resin string 1 is 1
The second layer of thermoplastic resin string 1 is wound on the first layer of thermoplastic resin string 1 along the width direction of the roll body 10, and the second layer of thermoplastic resin string 1 is wound thereon. The loop body 11 is characterized in that the winding start portion 1b sandwiched between the eye and the thermoplastic resin string 1 serves as a reinforcing material to form the loop body 11, and the loop body 11 has a predetermined length of heat. Plastic resin string 1
Is wound to form a wound body 10.

A method of manufacturing the wound body 10 of the thermoplastic resin string 1 will be described with reference to FIG. In the manufacturing method of this example, a core 12 having a structure similar to that shown in FIG. 8 and a folding plate (not shown) for folding the winding start portion 1b of the thermoplastic resin string 1 in the width direction of the winding body are provided. The thermoplastic resin string 1 is wound by using this.

In the manufacturing method of this example, first, as shown in FIG.
As shown in (a), each core piece 21 ... 2 of the core 12
1 is expanded in the diametrical direction and each core piece 21 ... Is arranged on the same circumference, and after fixing the end portion of the thermoplastic resin string 1 to one core piece 21 with a string stopper 22 (Fig. 32
(A)), the core 12 is rotated in the T direction, and the rotation of the core 12 is stopped in a state where the thermoplastic resin string 1 is wound around the core 12 by one layer (FIG. 32 (b)).

Next, a string stopper 2 at the end of the thermoplastic resin string 1
32, the winding start portion 1b of the thermoplastic resin string 1 is folded back in the width direction of the winding body, and the tip of the folded winding start portion 1b is placed at the most end of the winding body as shown in FIG. 32 (c). Insert it into the bottom surface of the thermoplastic resin string 1, which is the end,
Further, it is superposed on the thermoplastic resin string 1 located next to it (see FIG. 31). Next, as shown in FIG. 32 (d), the core 12 is rotated to wind the second layer of thermoplastic resin string 1 from above the folded winding start portion 1 b. When the winding of the second layer is completed, the folded back portion (winding start portion 1b) of the thermoplastic resin string 1 becomes the thermoplastic resin string 1 of the first layer and the thermoplastic resin string 1 of the second layer. The loop body 11 is formed by being sandwiched between the two, and the folded back portion serves as a reinforcing material. Then, after the formation process of the loop body 11 is completed, the core 12 is rotated to wind the thermoplastic resin string 1 of a predetermined length in a coil shape, thereby winding the thermoplastic resin string 1 in the winding body 10. To get

Here, the core piece used in each manufacturing method of the present invention is not limited to the plate-shaped member having the arc-shaped outer peripheral surface shown in FIGS. Any shape may be used as long as the outer surface of each core piece can form a part of the cylindrical surface with the core piece expanded in the diameter direction.

Next, a packing machine equipped with a winding band reel without a winding core according to the embodiment of the present invention will be described. FIG. 33
FIG. 1 is a schematic configuration diagram of an automatic packing machine.

The packing machine 40 includes a band reel 50 and a pool box 44 for temporarily pooling the thermoplastic resin string 49 of the winding body 41 set on the band reel 50 before packing the package 47. It is housed in the aircraft 40. The thermoplastic resin string 49 is separated from the wound state of the winding body 41 at the peeling section 42 and is supplied into the pool box 44 via the feed roll 43. Then, the thermoplastic resin string 49 in the pool box 44 is sent into the arch 48 via the shooter 45 by the feed roll 46,
The package 47 is packed in a predetermined packing form.

The band reel installed in the packing machine 40 having the above-mentioned structure and function is the cassette type band reel 5 in which the winding body is attached before set as shown by the broken line in FIG. 34 (a).
1 in the packing machine 40, FIG. 34 (b)
As shown in, the reel brake 53 and the reel shaft 54 are fixed to the side of the packing machine 40, and the winding body is set with the band reel 52 fixed to the reel shaft 54.

The present embodiment is characterized by the band reel attached to the packing machine, which is applicable to any of these types of structures. A preferred embodiment of this band reel will be described below.

FIG. 35 is a view showing a state of the reel of the first band reel embodiment in the closed and contracted state, and FIG.
6 is a diagram showing a state when the reel is expanded, and FIG. 37 is a diagram showing a structure of the reel lid. 35 to 37, (a) is a diagram showing a cross-sectional structure, and (b) is a side view seen from the direction of arrow A, respectively. Further, FIG. 38 is a view showing a method of setting a roll over time.

The thermoplastic resin string used in this example was a polypropylene resin PP band (width: 15.5).
mm, thickness: 0.65 mm). This roll has a winding length of 2000 m, a roll outer diameter of 455 mm, a roll weight of 9.6 kg, and a roll regular inner diameter of 250 mm. In addition, the inner end and the outermost circumference of the winding body are connected by the above-mentioned heating needle method to prevent the inner surface from being collapsed. Further, in this band reel, the material other than the threaded support 65 and the reel shaft 64 is PP.
It is preferably made of a light material such as aluminum so as to be lightly rotated by the pulling out force of a thermoplastic resin string such as a band and to suppress rotation inertia.

This band reel has a structure in which the cylindrical band support core 63 is contracted or expanded by rotating the opening / closing handle 62.
3 is divided into four, and these divided support cores are arranged in the same circumferential shape at the time of contraction / expansion, so that the inner surface of the winding body is supported by a cylindrical curved surface.

As shown in FIG. 38A, the method of setting the winding body on this band reel is such that the band support core 63 is first contracted and closed by the opening / closing handle 62 of the band reel, and then the winding body 10 Insert the hollow portion into the band support core 63,
The roll 10 is pressed against the reel side plate 61.
Next, as shown in FIG. 38 (b), the opening / closing handle 62 is turned to expand the outer diameter of the circle formed by the band supporting cores 63 ... 63 to 250 mm, and the reel lid 68 is aligned with the band supporting core 63. , A band reel (cassette type) in which a winding body as shown in FIG. 38 (c) is set, is used by being housed in a packing machine, or the band reel as shown in FIG. 34 (b) is a packing machine. In the case of the external mounting type of the main body, the winding body may be similarly set on the reel shaft via the mounting plate 72.

The winding body 10 set on this band reel
38 (d) is eccentric as shown in FIG. 38 (d), the band support core 63 is expanded so that the inner surface of the winding body 10 is in close contact with the cylindrical curved surface as shown in FIG. 38 (e). As a result, a good setting condition of this roll can be obtained. Regarding the roll set on this band reel, the roll eccentricity (definition of roll eccentricity = longest inner diameter / shortest inner diameter)
Of 1.00, 1.05, and 1.10, respectively, as a result of a test of the winding body setting situation and the use situation of the final part of the thermoplastic resin string, as a result, winding collapse occurs at the time of setting. There was not, and the roll set condition was good.
In addition, in the final stage of using the thermoplastic resin string, the winding body was not disabled until the end, and good results were obtained.

FIG. 39 is a view showing a state of the reel of the second band reel embodiment in the closed and contracted state, and FIG.
0 is a diagram showing a state when the reel is expanded, and FIG.
FIG. 1 is a diagram showing the structure of a reel lid. 39 to 41
In each of the figures, (a) is a view showing a cross-sectional structure, and (b) is
The figure is a view seen from the direction of arrow A. FIG. 42 is a view showing a method of setting a roll over time.

The thermoplastic resin string used in this example is a polypropylene resin PP band (width: 15.5).
mm, thickness: 0.65 mm). This winding body has a winding length of 2500 m, an outer diameter of 450 mm, a weight of 12 kg, and a regular inner diameter of 200 mm. In addition, the inner end and the outermost circumference of the winding body are connected by the above-mentioned heating needle method to prevent the inner surface from being collapsed. Further, in this band reel, the materials other than the expanding plate 75 and the shaft mounting plate 72 are made of a light material such as aluminum so as to be lightly rotated by the pulling force of the thermoplastic resin string such as the PP band, and to suppress the rotational inertia. It is preferably formed.

This band reel comprises a band support core 73.
The band support core 73 is expanded by inserting the protrusion of the reel lid 78 into the cover and tightening the cap 79. The expanded band support core 73 supports the inner surface of the winding body with a cylindrical curved surface. Take the form.

To set the winding body 10 on this band reel, as shown in FIG. 42 (a), first, with the band supporting core 73 inserted in the hollow portion of the winding body 10, the winding body 10 is placed on the reel side plate 71. Press down until just before the entire side of the touches. Next, as shown in FIG. 42B, the reel lid 78 is put together, and the protrusion of the reel lid 78 is attached to the band support core 73.
After the band support core 73 is widened by pushing in, the cap 79 is firmly tightened to the end, whereby a band reel having a wound body set can be formed as shown in FIG. 42 (c). This is stored in a packing machine for use, or in the case where the band reel as shown in FIG. 34 (b) is an external attachment type of the packing machine body, the winding body is similarly attached to the reel shaft via the mounting plate 72. May be set.

Regarding the rolls to be set on this band reel, similar to the example of the first band reel, the rolls having eccentricity of 1.00, 1.05, and 1.10 are When a confirmation test of the winding set state and the use state of the final part of the thermoplastic resin string was performed, in both cases, as in the case of the example of the first band reel embodiment, winding collapse does not occur at the time of setting, The roll set condition was good. Further, the wound body could be used to the end even at the final stage of using the thermoplastic resin string, and good results were obtained.

In the above embodiments, the support core is manually closed and expanded / expanded. However, it is also possible to adopt a structure in which the support core is compressed / expanded and expanded. Such an embodiment will be described below. FIG. 43 shows FIG.
The reel shaft 88 and the brake 5 of the packing machine shown in FIG.
An embodiment in which 3 is used as it is will be described.

This embodiment has a structure using air pressure.
Air inlet 82, air passage 89, air outlet 8
4. The band reel provided with the cock 85 for discharging air is attached to the reel shaft 88 of the packing machine. Band support core 8
Inside the core 3, a spring 87 for contracting and closing the core is provided.
When air is supplied from the air inlet 82, the band support core 83 expands in the direction in which the core compression spring 87 extends due to the air pressure, and when the air is discharged from the air outlet 84, the core compression spring 87. However, the band support core 83 has a structure of contracting and closing. An air gun is used to supply such air, and the air inlet 82
Attach the tip of the air gun to and supply air. At this time, since the air inlet is a check valve, air is not leaked from the inlet.

In order to further simplify the contraction / expansion operation, the compression / expansion drive can be performed by air pressure from a compressor, or electricity or hydraulic pressure. For this purpose, it is necessary to pass air, electricity or oil through the center of the reel shaft. FIG. 44 is a schematic configuration diagram of a band reel unit in a packing machine having a structure in which the reel shaft of the packing machine shown in FIG. 34 (b) is modified so that the air pressure from the compressor can be used.

In the structure for supplying the air, as shown in FIG. 44, the compressed air supplied by the compressor 96 passes through the air filter 97, the regulator 98, and the oiler 99, and then opens the supply solenoid valve. As a result, air is supplied to the air cylinder through the reel shaft 88 via the rotary joint 93, and the support core 83 expands. Air is discharged by opening the discharge solenoid valve, and the support core 83 is contracted and closed.

FIG. 45 shows a method for setting a winding body on a band reel in a packing machine having such a structure over time. 45A to 45D, the cross-sectional shape of the band reel of the present embodiment is shown on the left side of each drawing, and the cross-sectional shape seen from the front side is shown on the right side.

First, as shown in FIG. 45 (a), the roll 1
0 is fitted into the support core, and subsequently, as shown in FIG. 45 (b), the reel lid 68 is attached and the cap 79 is tightened. Thereafter, as shown in FIG. 45 (c), the solenoid valve is opened by the switch, air is supplied, and the support core 83 is expanded. Then, after the thermoplastic resin string of the roll 10 is used up, as shown in FIG. 45 (d), air is released and the support core 83 is contracted and closed.

In this way, the solenoid valve can be opened and closed by turning the switch on and off, and the support core 83 is automatically expanded and contracted to provide the winding band reel without a core according to the present invention. A packing machine is configured.

[0117]

As described above in detail, the winding body of the thermoplastic resin cord of the present invention is superposed on each other in the winding body in which the thermoplastic resin cord is wound in a coil shape many times without the core. Through holes are provided in the plurality of thermoplastic resin strings, the peripheral portions of the through holes are connected by fusion to form a loop body, and since the thermoplastic resin string is wound around the loop body, The thermoplastic resin string becomes a wound body in a stable state, no winding collapse occurs when setting it on the band reel, and it is possible to use the whole part of the thermoplastic resin string until the end of the wound body. Absent.

In the winding body of the thermoplastic resin string of the present invention,
When a through hole is also provided in a plurality of thermoplastic resin strings stacked near the end of the winding end of the thermoplastic resin string,
There is no winding collapse from the end of the winding end, and there is no need to bother to end the end of winding with tape and heat fusion.

The through holes provided in the wound body of the thermoplastic resin cord of the present invention are the total extension length of the peripheral edge portion, the shape and arrangement of the through holes, and the thermoplastic resin cords which are to be overlaid to form the through holes. The number is set based on the material, thickness and width of the thermoplastic resin string, so that the balance between the connection strength and the peeling strength of the thermoplastic resin strings that are superposed is adjusted, and by the connection portion formed in the through hole. In addition to ensuring a stable connection strength, when the connecting portions of the stacked thermoplastic resin strings are peeled off to use the thermoplastic resin strings, the resin strings are not torn at the connecting portions.

According to the method for manufacturing a wound body of the thermoplastic resin string of the present invention, the core piece is composed of a plurality of core pieces arranged along the circumference and movable in the diametrical direction. In the expanded state, a core is used in which the outer surface of each core piece forms a part of a cylindrical surface, and a projecting member for forming a hole that is movable to an inner position of the core and a position projecting from the outer surface of the core piece. , In a state where each core piece of the core is expanded in the diametrical direction, the end of the thermoplastic resin string is fixed, and then the core is rotated to wind the thermoplastic resin string a plurality of times around the outer periphery of the core. To project a projecting member from the outer surface of the core piece and pierce a plurality of thermoplastic resin strings wound around the core to form a through hole, and to connect the plurality of thermoplastic resin strings by fusing the peripheral portions of the through holes. Form a loop body with stable connection strength. Since it is, and can be more thermoplastic resin straps obtain an excellent wound body shape retention wound in a stable state. Therefore, when set on the band reel, winding collapse does not occur. In addition, the last part of the thermoplastic resin string can be used, and there is no waste.

According to the method for manufacturing a wound body of the thermoplastic resin string of the present invention, each core of the core is formed by using the core having the above-mentioned structure and the projecting member for forming a hole arranged outside the core. With the piece expanded in the diametrical direction, the end of the thermoplastic resin string is fixed, and then the core is rotated to wind the thermoplastic resin string a plurality of times around the outer circumference of the core. A loop with stable connection strength is formed by piercing a protruding member in a heated state from the outside into a thermoplastic resin string to form a through hole and connecting a plurality of thermoplastic resin strings by fusing the peripheral portions of the through hole. Since the body is formed, it is possible to obtain a wound body excellent in shape retention in which a plurality of thermoplastic resin strings are wound in a stable state. Therefore, when set on the band reel, winding collapse does not occur. Also,
Since the last part of the thermoplastic resin string can be used, there is no waste.

According to the method of manufacturing a wound body of the thermoplastic resin cord of the present invention, the core having the above-mentioned structure is used, and each core piece of the core is expanded in the diametrical direction. After the thermoplastic resin string is wound around the core multiple times by fixing the core, and then the core is rotated, the thermoplastic resin string wound around the core is irradiated with a laser beam to produce the thermoplastic resin string. By forming a through hole in the, and by connecting a plurality of thermoplastic resin strings by fusion of the peripheral portion of the through hole, to form a loop body with stable connection strength, depending on the operating characteristics of the laser device, Processing time can be shortened, and even small holes can be stably obtained, improving both work efficiency and accuracy. In addition, since the shape of the through hole to be formed can be set arbitrarily, there is a large degree of freedom in adjusting the connection strength, and various processing conditions can be set according to the type of resin used and the thickness dimension of the thermoplastic resin string. Becomes In addition, the laser device has the advantages that there are few consumable items and maintenance is easy.

According to the above manufacturing methods,
The total length of the peripheral edge portion which is the length around the through hole, the shape and arrangement of the through hole, the number of the overlapped thermoplastic resin strings that form the through hole, and the thermoplastic resin string Based on the material, the thickness and the width of the thermoplastic resin string, it is set so that the balance between the connection strength and the peel strength of the overlapped thermoplastic resin strings can be adjusted, so that the width direction of the thermoplastic resin string can be adjusted. It is possible to control the tensile strength, improve the shape retention of the roll,
Moreover, the thermoplastic resin string can be used up to the end and there is no waste.

The winding body of the thermoplastic resin cord of the present invention is a winding body in which a large number of thermoplastic resin cords are wound in a coil shape without a winding core, and a plurality of thermoplastic resin cords superposed on each other are heated. A loop body is formed by fusing and a thermoplastic resin string is wound around the loop body, so that a plurality of thermoplastic resin strings are wound in a stable state, and when set on the band reel. No winding collapse occurs, and the entire part of the wound body of the thermoplastic resin string can be used, and there is no waste.

According to the method for producing a wound body of the thermoplastic resin string of the present invention, the core having the above structure and the hot iron for fusing are used, and each core piece of the core is expanded in the diametrical direction. After fixing the end of the thermoplastic resin string and then rotating the core to wind the thermoplastic resin string around the core a plurality of times, apply heat to the plurality of thermoplastic resin strings wound on the core for fusion. The strength of the connection is stable by connecting the thermoplastic resin strings by applying heat and bonding them together or by connecting the thermoplastic resin strings wound around the core by heat bonding using the ultrasonic welding method. Since it forms a looped body,
It is possible to obtain a wound body excellent in shape retention in which a plurality of thermoplastic resin strings are wound in a stable state. Therefore, when set on the band reel, winding collapse does not occur. In addition, the last part of the thermoplastic resin string can be used, and there is no waste.

In the wound body of the thermoplastic resin string of the present invention, the thermoplastic resin string is wound in a coil shape many times without a winding core, and between the plurality of thermoplastic resin strings, a string-like or thread-like form is formed. The reinforcing material is laid across the width direction of the winding body, and the reinforcing material reinforces the winding state of the plurality of thermoplastic resin strings to form the loop body, so that the winding collapse does not occur when setting it on the band reel. In addition, since the whole part of the wound body of the thermoplastic resin string can be used, there is no waste.

According to the method for manufacturing a wound body of the thermoplastic resin cord of the present invention, the core having the above-mentioned structure is used, and each core piece of the core is expanded in the diametrical direction. After fixing, the thermoplastic resin string is wound around the core by rotating the core, and a string-like or thread-like reinforcing material is passed in the width direction of the winding body between the thermoplastic resin strings wound around the core. Since the loop body having a stable connection strength is formed, it is possible to obtain a wound body in which a plurality of thermoplastic resin strings are wound in a stable state and have excellent shape retention. Therefore,
Rolling up does not occur when setting on the band reel.
Also, it is possible to use up to the last part of the thermoplastic resin string,
There is no waste. According to the packing machine provided with the band reel for the winding body without the winding core of the present invention, the band reel forms the hollow portion of the winding body and supports the inner surface of the winding body of the thermoplastic resin cord in a tubular shape. In addition, a support having a curved surface along the curved surface of the inside of the roll is provided, and since the support is configured to be able to move back and forth on the inside of the roll, this heat is applied by the force pulling the thermoplastic resin string. Even when the remaining amount of the wound plastic resin string is reduced, the thermoplastic resin string does not dig into the wound body itself, and does not collapse from the inner surface of the wound body. Also, since the support can be moved back and forth on the inner surface of the winding body, even if the winding body is eccentric, it can be fitted into the band reel without being collapsed from the inner surface, and then the support is closely attached to the inner surface of the winding body. If so, the wound body is in a mounted state in which the wound body is in close contact with the support body and can be used as usual, so that there is no problem.

According to the present invention, no core remains after using the thermoplastic resin cord, and it cannot be used as a raw material for recycled paper which has been a problem due to the use of a resin-treated core as in the conventional case. The problem of the winding core is solved all at once, and since the entire end of the winding body of the thermoplastic resin string without the winding core can be used as a packing band, there is a great advantage that no waste is generated.

[Brief description of drawings]

FIG. 1 is an external perspective view showing a wound body of a thermoplastic resin string according to an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of a main part of a winding body according to an embodiment of the present invention.

FIG. 3 is a diagram for explaining through holes formed in the winding body according to the embodiment of the present invention.

FIG. 4 is a diagram for explaining through holes formed in the winding body according to the embodiment of the present invention.

FIG. 5 shows an arrangement example of through holes arranged in the entire width direction of the winding body according to the embodiment of the present invention, in which the outer peripheral surface of the winding body is shown as a plan development view.

FIG. 6 is a diagram showing the measurement results of the hole diameter and the peel strength formed in the winding body according to the embodiment of the present invention.

FIG. 7 is a diagram showing the relationship between the peel strength and the tensile strength in the width direction when the cross-sectional shape of the through hole formed in the winding body according to the embodiment of the present invention is circular and rectangular. is there.

[Fig. 8] Fig. 8 is a view showing a method of manufacturing the winding body according to the embodiment of the present invention with time, and a diagram for explaining a manufacturing method of a method of forming a through hole from the inside of the winding body by a needle-shaped body. is there.

[Fig. 9] Fig. 9 is a view showing a manufacturing method of the winding body according to the embodiment of the present invention with time, and a drawing for explaining a manufacturing method of a method of forming a through hole from the outside of the winding body by a needle-shaped body. is there.

FIG. 10 is a diagram showing a manufacturing method of the winding body according to the embodiment of the present invention with time, and is a drawing for explaining a manufacturing method of a method of forming a through hole by irradiation of a laser beam.

FIG. 11 is a side view schematically showing another embodiment of the winding body of the thermoplastic resin string of the present invention.

FIG. 12 is a diagram schematically showing details of a C portion of FIG.

FIG. 13 is a partial perspective view of the embodiment of FIG.

FIG. 14 is a diagram for explaining another embodiment of the manufacturing method of the present invention over time.

FIG. 15 is a diagram schematically showing a DD cross section of FIG. 14;

16 is a diagram schematically showing details of an E portion in FIG.

FIG. 17 is a diagram schematically showing a FF cross section of FIG. 16;

FIG. 18 is a partial perspective view showing a modified example of the embodiment of FIG. 11.

FIG. 19 is a diagram schematically showing one step of the manufacturing method of the embodiment in FIG.

20 is a partial perspective view showing another modification of the embodiment of FIG.

FIG. 21 is a diagram schematically showing one step of the manufacturing method of the embodiment in FIG. 20.

22 is a partial perspective view showing another modified example of the embodiment of FIG. 11. FIG.

FIG. 23 is a diagram schematically showing one step of the manufacturing method of the embodiment in FIG. 22.

FIG. 24 is a diagram for explaining another embodiment of the manufacturing method of the present invention over time.

FIG. 25 is a diagram schematically showing details of a G part in FIG. 24.

FIG. 26 is a diagram schematically showing an example of a heat fusion pattern when an ultrasonic welding method is used.

FIG. 27 is a side view schematically showing another embodiment of the winding body of the thermoplastic resin string of the present invention.

FIG. 28 is an explanatory view of the method for manufacturing the winding body of the thermoplastic resin string in FIG. 27.

FIG. 29 is a diagram schematically showing details of the H part in FIG. 28.

FIG. 30 is an explanatory diagram of the method for manufacturing the winding body of the thermoplastic resin string in FIG. 27.

FIG. 31 is a side view schematically showing another embodiment of the winding body of the thermoplastic resin string of the present invention.

FIG. 32 is an explanatory diagram of the method for manufacturing the winding body of the thermoplastic resin string in FIG. 31.

FIG. 33 is a schematic configuration diagram of a packing machine according to an embodiment of the present invention.

FIG. 34 is a diagram illustrating an installation form of band reels applied to the packing machine according to the embodiment of the present invention.

FIG. 35 is a view showing a state of the first band reel applied to the packing machine according to the embodiment of the present invention, when the reel of the embodiment is closed and contracted.

FIG. 36 is a view showing a state of the first band reel according to the exemplary embodiment of the present invention when the reel is expanded.

FIG. 37 is a view showing the structure of the reel lid of the embodiment example of the first band reel according to the embodiment of the present invention.

FIG. 38 is a diagram showing with time the method of setting the winding body on the embodiment example of the first band reel according to the embodiment of the present invention.

FIG. 39 is a view showing a state of the second band reel applied to the packing machine according to the embodiment of the present invention when the reel of the embodiment example is contracted and closed;

FIG. 40 is a diagram showing a state of the second band reel according to the exemplary embodiment of the present invention when the reel is expanded.

FIG. 41 is a view showing the structure of the reel cover of the embodiment example of the second band reel according to the embodiment of the present invention.

FIG. 42 is a view showing a method of setting a winding body on the second band reel according to the embodiment of the present invention over time.

FIG. 43 is a view showing the structure of a modified embodiment of the packing machine of the present invention.

FIG. 44 is a schematic configuration diagram of a band reel unit of a modified embodiment of the packing machine of the present invention.

FIG. 45 is a view showing a method of setting a winding body on a band reel with time in a modified example of the packing machine of the present invention.

[Explanation of symbols]

1 Thermoplastic string 1a Thermoplastic resin string winding start end 1b Thermoplastic resin string winding start part 2 through holes 3 connection 10 rolls 10a hollow part 12,102 cores 21,121 core pieces 13 flaps 31 flap pieces 14 Needles 30 laser unit 40 packing machine 50, 51, 52 band reels 63, 73 core support 104 hot trowel 141 Tip 204 ultrasonic welding machine 241 horn 242 anvil 304 thread weaving 341 hook

─────────────────────────────────────────────────── ─── Continuation of front page (56) Reference JP-A-7-315690 (JP, A) JP-A-63-247250 (JP, A) JP-A-7-172707 (JP, A) JP-A-63- 185627 (JP, A) JP 10-147459 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) B65H 55/00-55/04 B65H 65/00 B65H 75/22 B65H 75/24 B65B 13/18

Claims (14)

(57) [Claims] 1. In a winding body in which a thermoplastic resin string is wound in a coil shape many times without a winding core, a plurality of thermoplastic resin strings which are superposed on each other are provided with through holes, and peripheral portions of the through holes are provided. And a thermoplastic resin string wound around the loop body. The wound body of the thermoplastic resin string is characterized in that: 2. A winding body formed by winding a plurality of thermoplastic resin strings in a coil shape, wherein through holes are provided in a plurality of thermoplastic resin strings that are superposed in the vicinity of the end of the winding end of the thermoplastic resin strings. The wound body of the thermoplastic resin string according to claim 1 , wherein the peripheral portions of the through holes are connected by fusion so that the end of the winding end of the thermoplastic resin string is fixed to the wound body. 3. The total length of the peripheral edge portion, which is the length around the through hole, the shape and arrangement of the through hole, and the number of thermoplastic resin strings for forming the through holes are determined by the number of the thermoplastic resin strings. It is set in advance so that the balance between the connection strength and the peel strength of the superposed thermoplastic resin strings is adjusted based on the material, the thickness and the width.
Alternatively, the wound body of the thermoplastic resin string according to 2. 4. A plurality of core pieces arranged along the circumference, each of which is capable of advancing and retracting in the diametrical direction, and in the state where the core pieces are expanded in the diametrical direction, the outer surface of each core piece is a cylindrical surface. A core forming a part, using a projecting member for hole formation that is movable to an inner position of the core and a position projecting from the outer surface of the core piece, in a state where each core piece of the core is expanded in the diameter direction, After fixing the end of the thermoplastic resin string and then winding the thermoplastic resin string around the core multiple times by rotating the core,
A protruding member in a heated state is projected from the outer surface of the core piece, and a plurality of thermoplastic resin strings wound around the core are pierced to form a through hole, and a plurality of thermoplastic resin strings are formed by fusing the peripheral portions of the through holes. A method for manufacturing a wound body of a thermoplastic resin string, comprising forming a wound body by moving the projecting member inward of the core after the connection and continuously winding the thermoplastic resin string. 5. A wound body of the thermoplastic resin string according to claim 1.
A manufacturing method, comprising a plurality of core pieces arranged along the circumference, each of which is capable of advancing and retracting in a diametrical direction, and with the core pieces expanded in the diametrical direction, the outer surface of each core piece is a cylindrical surface. Using a core forming a part of the core and a projecting member for forming a hole arranged outside the core, in a state where each core piece of the core is expanded in the diameter direction, the end portion of the thermoplastic resin string is After fixing and then winding the thermoplastic resin string around the core multiple times by rotating the core, the plurality of thermoplastic resin strings wound around the core are pierced with the protruding member in the heated state from the outside to form the through hole. And the plurality of thermoplastic resin strings are connected by fusing the peripheral portions of the through holes, the projecting member is removed from the through holes, and the thermoplastic resin string is continuously wound to form a wound body. A method for manufacturing a roll of a plastic resin string. 6. A wound body of the thermoplastic resin string according to claim 1.
A manufacturing method, comprising a plurality of core pieces arranged along the circumference, each of which is capable of advancing and retracting in a diametrical direction, and with the core pieces expanded in the diametrical direction, the outer surface of each core piece is a cylindrical surface. Of the core, and with each core piece of the core expanded in the diametrical direction, fix the end of the thermoplastic resin string and then rotate the core to move the thermoplastic resin string to the outer circumference of the core. A plurality of thermoplastic resin strings wound on the core, a laser beam is applied to the plurality of thermoplastic resin strings to form through holes in the thermoplastic resin strings, and a plurality of thermoplastic resin strings are formed by fusing the peripheral portions of the through holes. A method for manufacturing a wound body of a thermoplastic resin string, which comprises forming a wound body by continuously winding the thermoplastic resin string after connecting the thermoplastic resin strings. 7. The total peripheral length of the perimeter of the through hole, the shape and arrangement of the through hole, the number of thermoplastic resin cords to form the through holes, and the number of thermoplastic resin cords 7. The thermoplastic resin according to claim 4, 5 or 6, which is set in advance so that the balance between the connection strength and the peel strength of the plurality of thermoplastic resin strings is adjusted based on the material, thickness and width. A method of manufacturing a roll of resin string. 8. In a winding body in which a plurality of thermoplastic resin strings are wound in a coil shape without a winding core, a plurality of thermoplastic resin strings superposed on each other are heat-sealed to form a loop body, A wound body of a thermoplastic resin string, characterized in that a thermoplastic resin string is wound around this loop body. 9. A wound body of the thermoplastic resin string according to claim 8.
A manufacturing method, comprising a plurality of core pieces arranged along the circumference, each of which is capable of advancing and retracting in a diametrical direction, and with the core pieces expanded in the diametrical direction, the outer surface of each core piece is a cylindrical surface. By using a core that forms a part of the core and a hot iron for fusing, with each core piece of the core expanded in the diameter direction, fix the end of the thermoplastic resin string, and then rotate the core. After winding the thermoplastic resin string around the core a plurality of times, apply a heat iron for fusion to the thermoplastic resin string wrapped around the core to connect the plurality of thermoplastic resin strings by heat fusion, and then heat A method for producing a wound body of a thermoplastic resin string, which comprises forming a wound body by continuously winding a plastic resin string. 10. A wound body of the thermoplastic resin string according to claim 8.
The manufacturing method of, wherein each core piece is arranged along the circumference and is movable in the diametrical direction, and the outer surface of each core piece is a cylinder when the core pieces are expanded in the diametrical direction. Using a core that forms a part of the surface, with each core piece of the core expanded in the diameter direction, fix the end of the thermoplastic resin string and then rotate the core to fix the thermoplastic resin string to the core. After winding a plurality of times on the outer circumference, connecting multiple thermoplastic resin strings wound on the core by heat fusion by ultrasonic welding method, and then winding the thermoplastic resin string continuously to form a wound body A method for manufacturing a wound body of a thermoplastic resin string. 11. A Makitai thermoplastic resin cord is wound multiple times into a coil with no core, between a plurality of thermoplastic resin cord, yarn is passed plugged into the winding body width direction, the yarn But
By being woven into the first layer of thermoplastic resin string, the winding state of the thermoplastic resin string is reinforced to form a loop body, and the thermoplastic resin string is wound around this loop body. Roll of thermoplastic resin string. 12. A thermoplastic resin string is wound in a state without a core.
In a winding body that is wound a number of times in the shape of a coil, the winding start portion is provided over the first layer of thermoplastic resin string along the width direction of the winding body, and the second layer of thermoplastic resin is placed thereon. A wound body of a thermoplastic resin string, in which a string is wound. 13. A heat transfer device according to claim 11 or claim 12.
A method of manufacturing a winding body of a plastic resin string, comprising a plurality of core pieces arranged along a circumference, each of which is capable of advancing and retreating in a diametrical direction. By using a core whose outer surface forms a part of a cylindrical surface, by fixing each end of the core piece of the core in a diametrical direction and fixing the end of the thermoplastic resin string, the core is rotated. A thermoplastic resin string is wound around the core, and a thread or a thermoplastic resin string is provided between the thermoplastic resin strings wound around the core.
A method for manufacturing a wound body of a thermoplastic resin string, the method comprising forming a wound body by passing a winding start portion of the winding machine in a width direction of the wound body and then continuously winding the thermoplastic resin string. 14. A packing machine for packing a packaged article with this thermoplastic resin string, comprising a band reel for supporting a winding body formed by winding the thermoplastic resin string in a coil shape many times without a winding core. In the band reel, the hollow portion of the winding body is formed to support the inner surface of the winding of the tubular thermoplastic resin string, and the inner surface of the winding has a curved surface along a curved surface. support is provided, and characterized in that the support is Ri retractably der this winding body surface, at the time of expansion are arranged on the same circumference, the form to support the inner surface of the wound body in a cylindrical curved surface Packing machine equipped with a band reel for a core without a core.