JP2014145474A - Spiral winding tube and transfer device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spiral winding tube that prevents a tubular body from being ruptured due to corrosion caused by a cut groove, and a transfer device using the same.SOLUTION: A spiral hard wire 4 is embedded along the vicinity of an inner surface 3a of a tubular body 3, which is molded by winding a strip-shaped body 1, in such a manner as to be arranged inside the tubular body 3 with respect to a reinforcing filament body 2. Thus, when a conveyance article is moved at a high speed by a fluid such as compressed air, corrosion caused by a cut groove is suppressed by the spiral hard wire 4 even in the case where the cut groove is formed because the conveyance article is brought into contact with the inner surface 3a of the tubular body 3.

Description

  The present invention relates to a spirally wound tube formed by spirally winding a belt-like body so that adjacent surfaces are bonded to each other, and an article such as a thread, a wire, or a nail, a screw, or a hook using the spirally wound tube It is related with the transfer apparatus which moves the conveyed product which consists of at high speed with fluids, such as compressed air.

  Conventionally, as this kind of spirally wound tube, a belt-like body made of a soft synthetic resin in a molten or semi-molten state continuously extruded from an extruder is spiraled to the outer surface of a spiral shaft supported in a cantilever state. There is a spiral reinforcing tube which is formed into a tubular body by adhering adjacent surfaces of the band-like body while being wound in a shape, and in which a linear body made of a hard synthetic resin is embedded as a core inside the band-like body ( For example, see Patent Document 1).

Japanese Examined Patent Publication No. 50-31198 (page 2-3, Fig. 1, 10)

In such a conventional spirally wound tube, a strip made of a soft synthetic resin is exposed on the inner surface of the tubular body, and a linear body made of a hard synthetic resin is embedded at an intermediate position in the thickness direction of the tubular body.
However, in a collection device or a transfer device, when the transported object such as a thread is sucked with a fluid such as compressed air and moved at a high speed, the transported object comes into contact with the surface of the synthetic resin exposed on the inner surface of the tubular body. Due to these frictions, the inner surface of the tubular body is partially abraded to form kerfs even if it is a soft material such as a thread regardless of the hardness of the conveyed product. Even if this kerf is shallow at the time of occurrence, the subsequent conveyed object is more easily caught, so that it gradually erodes and becomes deeper.
When the depth of the kerf reaches the middle position in the thickness direction of the tubular body, it comes into contact with the rigid synthetic resin filament, but air flows in from the contact portion between the strip and the filament that becomes the tubular body. In some cases, the tubular body may burst. As a result, the tubular body becomes unusable in a short period of time, so frequent replacement is required in a relatively short period of time, which not only reduces the operating rate of the apparatus but also increases the replacement cost. It was.
Therefore, in order to solve such a problem, it is conceivable to use a spring hose in which a metal spring is spirally embedded inside the tubular body.
However, a hose in which a metal spring is embedded in a spiral shape is heavier and less flexible than a spirally wound tube in which a rigid synthetic resin filament is embedded in a spiral shape. When used in a recovery machine that sucks in a fluid such as compressed air and moves it at high speed, there is a problem that handling becomes difficult and usage is poor.

  An object of the present invention is to deal with such a problem, and an object of the present invention is to prevent the tubular body from being ruptured by erosion of a kerf.

  In order to achieve such an object, a spirally wound tube according to the present invention is a spirally wound tube formed by spirally winding a strip so that adjacent surfaces are bonded to each other. Embedded with a reinforcing linear body made of a hard synthetic resin, along the vicinity of the inner surface of the tubular body formed by winding the strip-shaped body, the helical hard wire has a diameter of the tubular body rather than the reinforcing linear body. It is embedded so that it may be arranged inside the direction.

  Further, the transfer device according to the present invention is a transfer device for moving a transfer object using the spirally wound tube at a high speed by a transfer fluid, the supply tube supplying the fluid to the tubular body. It is characterized by connecting roads.

In the spirally wound tube according to the present invention having the above-described features, the helical hard wire is disposed inside the tubular body rather than the reinforcing linear body along the vicinity of the inner surface of the tubular body formed by winding the belt-like body. By embedding in this way, even when the conveyed product contacts the inner surface of the tubular body at a high speed by a fluid such as compressed air, the erosion caused by the kerf is a spiral hard wire Can be stopped by.
Therefore, the rupture of the tubular body due to the erosion of the kerf can be prevented.
As a result, compared to the conventional one in which a strip made of synthetic resin is exposed on the inner surface of the tubular body, the wear resistance to the conveyed product is excellent and the product life is prolonged, so the replacement interval is extended and the operating rate of the transfer device is increased. It is economical because it can improve and reduce the replacement cost.

In the transfer device according to the present invention having the above-described features, the transported fluid is supplied to the tubular body from the supply pipe line, and the transported material is moved along the inner surface of the tubular body at a high speed so that the transported material is tubular. Even if a kerf is formed in contact with the inner surface of the body, the erosion caused by the kerf is prevented by the spiral hard wire.
Accordingly, it is possible to prevent the tubular body from being ruptured by the erosion of the kerf and to stably move the conveyed product over a long period of time.
Furthermore, the spiral wound tube is lighter and more flexible than a recovery machine in which a spring hose with a metal spring embedded in a spiral shape is movable. Improvement can be achieved.

It is explanatory drawing which shows the whole structure of the spiral winding tube which concerns on embodiment of this invention, and is a partially notched front view during the manufacture. It is explanatory drawing which shows the whole structure of the transfer apparatus which concerns on embodiment of this invention, and is a reduction | decrease front view in the case of being a collection machine.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
As shown in FIGS. 1 and 2, the spirally wound tube A according to the embodiment of the present invention is continuously fed from the extruder B by a continuous spirally wound tube manufacturing apparatus as described in Japanese Patent Publication No. 50-31198. While the belt-like body 1 made of a soft synthetic resin in a molten or semi-molten state supplied to the belt is spirally wound along the outer peripheral surface of the molding axis C, the adjacent mutual surfaces 1a of the belt-like body 1 are fused to each other. It is formed into a tubular shape by being connected and bonded.
Furthermore, the transfer device D according to the embodiment of the present invention uses a spirally wound tube A, and is composed of an article such as a thread or a wire, or an article having a pointed tip such as a nail, screw, or hook along the inside thereof. The conveyed product P is moved at a high speed by a conveying fluid made of compressed air or the like.

The strip 1 is made of a soft thermoplastic resin, and a reinforcing filament 2 made of monofilament or the like is embedded therein as a hard synthetic resin, along the outer peripheral surface of the molding shaft C whose outer diameter can be changed. Then, the tubular body 3 is formed by winding it spirally.
In particular, when the belt-like body 1 made of a transparent or translucent synthetic resin is used, a transparent or translucent tubular body 3 is formed, and the inside can be seen from the outside through the tubular body 3.
In the tubular body 3, the reinforcing linear body 2 is spirally embedded along the belt-like body 1 at an intermediate position in the thickness direction.
Further, the tubular body 3 is embedded so that the spiral hard wire 4 is disposed on the radially inner side of the tubular body 3 with respect to the reinforcing linear body 2 along the vicinity of the inner surface 3a.

The hard wire 4 is made of a metal such as brass or a hard material having the same degree of hardness, and as a mounting position, the hard wire 4 is spirally wound so as to be disposed between the adjacent surfaces 1a of the strip 1. Is preferred.
The outer diameter of the hard wire 4 is stronger when a thicker one is used, but the thick hard wire 4 obstructs the field of view, and the inside can be seen from the outside through the transparent or translucent tubular body 3. May be difficult.
Therefore, it is preferable that the outer diameter of the hard wire 4 is thinner than the outer diameter of the reinforcing linear body 2, for example, a linear body having a diameter of about 1 to 0.1 mm, preferably 0.3 to 0.5 mm.

And the transfer apparatus D which concerns on embodiment of this invention is demonstrated.
As shown in FIG. 2, in the transfer device D, a supply pipe 11 that supplies a fluid for conveyance to the tubular body 3 is connected to the tubular body 3 that is the spirally wound tube A, and compression is performed from the supply pipe 11. By supplying a transport fluid made of air or the like to the tubular body 3, the transport object P made of an article such as a thread, a wire, or a nail, a screw, or a hook is moved at a high speed along the inner surface 3 a of the tubular body 3. It is comprised so that.
As the transfer device D, the tubular body 3 of the spirally wound tube A is movably piped, and a transported object P such as a thread, a wire, or a nail, a screw, or a hook is sucked by a fluid such as compressed air and moved at a high speed. A recovery machine D1 for recovery may be mentioned. Other than that, the tubular body 3 of the spirally wound tube A is fixedly piped, and a conveyor or the like that moves a conveyance object P such as a thread, a wire, or a nail, a screw, or a hook along the inside by a fluid such as compressed air. Is also included in the transfer device D.

According to the spirally wound tube A and the transfer device D according to the embodiment of the present invention, the helical hard wire 4 is more inside the tubular body 3 than the reinforcing filament 2 along the inner surface 3a of the tubular body 3. Therefore, when the conveyed product P is moved at high speed by a fluid such as compressed air, the conveyed product P comes into contact with the inner surface 3a of the tubular body 3, and this contact portion is partially worn and the kerf R is formed. Even if it occurs, the erosion by the kerf R is stopped by the spiral hard wire 4.
Therefore, rupture of the tubular body 3 due to erosion of the kerf R can be prevented.
As a result, the wear resistance with respect to the conveyed product P is excellent and the product life of the spirally wound tube A is extended, so the replacement interval of the spirally wound tube A is extended, the operating rate of the transfer device D is improved, and the replacement cost is reduced. Is economical.

Next, each embodiment of the present invention will be described with reference to the drawings.
In the first embodiment, as shown in FIGS. 1 and 2, the hard wire 4 is spirally wound so that the spirally wound tube A is disposed between the adjacent surfaces 1 a of the strip 1. is there.
That is, the helical hard wire 4 is embedded in the middle position of the reinforcing linear body 2 in the axial direction of the tubular body 3.
Furthermore, the case where the hard wire 4 is a wire body thinner than the outer diameter of the reinforcing filament 2 is shown.

In the example shown in FIG. 1 and FIG. 2, a hard member having a diameter of about 0.3 mm is located at an intermediate position of the reinforcing linear body 2 in the axial direction of the tubular body 3 and at a position slightly away from the inner surface 3a of the tubular body 3. Only one line of wire 4 is embedded.
Although not shown in the drawings as other examples, a hard wire 4 having a thickness larger than 0.3 mm is embedded, or in addition to the hard wire 4 disposed between the adjacent surfaces 1a of the strip 1, a tubular body If the plurality of hard wires 4 are embedded by arranging the helical hard wires 4 before and after the axial direction of the tube 3, or if they are radially inward of the tubular body 3 relative to the reinforcing filaments 2, It is also possible to embed a spiral hard wire 4 along the inner surface 3a.

Further, in the example shown in FIG. 1, the belt-like body 1 having a parallelogram cross section is continuously extruded from the extruder B in a semi-molten state, and the position is controlled by a guide roller (not shown), etc. The belt 1 is supplied to a forming shaft C that is supported and continuously rotated in one direction, and the belt-like body 1 is spirally wound along the outer peripheral surface of the molding shaft C. By moving relative to each other in the direction (arrow direction), the adjacent mutual surfaces 1a of the strip 1 are fused and bonded to each other.
A supply source 4 ′ of the hard wire 4 is provided at a position away from the extruder B which is a supply source of the strip 1. The position immediately before the adjacent surfaces 1a of the strip 1 are melted and bonded to each other on the outer peripheral surface of the molding shaft C while the position of the hard wire 4 from the supply source 4 'is controlled by a guide roller (not shown) or the like. By supplying continuously toward the surface, the hard wire 4 is sandwiched between the adjacent surfaces 1a of the strip 1 and wound spirally.
Although not shown in the drawings as another example, the belt-like body 1 extruded from the extruder B and the hard wire 4 supplied from the supply source 4 ′ are combined before winding around the outer peripheral surface of the forming shaft C. The combined strip 1 and hard wire 4 can be spirally wound along the outer peripheral surface of the forming axis C.

According to the spirally wound tube A according to the first embodiment of the present invention, the winding of the hard wire 4 can proceed simultaneously when the strip 1 is wound.
Therefore, the assembly process of the hard wire 4 can be easily performed.
As a result, there is an advantage that the manufacturing cost can be further reduced.
Furthermore, when the belt-shaped body 1 is made of a transparent or translucent synthetic resin and the hard wire 4 is a wire body thinner than the outer diameter of the reinforcing linear body 2, the transparent or translucent belt-shaped body 1 is wound. Through the tubular body 3 to be molded, the transported object P moving inside the tubular body 3 can be seen from the outside without the thin hard wire 4 getting in the way.
Therefore, there is an advantage that it is possible to easily check the moving condition and the clogging condition of the conveyed product P as the internal state of the tubular body 3.
In particular, when the hard wire 4 is a brass wire that can be cut with a cutter such as scissors, it is not only relatively soft and excellent in workability but also convenient for cutting the spirally wound tube A into a predetermined length. There is also an advantage of being.

In the second embodiment, as shown in FIG. 2, the transfer device D has a tubular body 3 that is a spirally wound tube A movably piped, and a transported object P such as a thread, a wire, or a nail, a screw, or a hook. This shows a case where the recovery machine D1 is configured to suck in the fluid for transport and move it at a high speed for recovery.
The recovery machine D1 includes a bent channel 12 in which the tubular body 3 of the spirally wound tube A is connected to the one end opening 12a, and a supply pipe 11 for supplying a transport fluid to the other end opening 12b. The nozzle 13 branched from the bent part 12c of the flow path 12 and connected is provided as a main component.

The bent channel 12 has a bent portion 12c between one end opening 12a and the other end opening 12b.
The bent portion 12c is formed so as to be bent in a substantially U shape, forms a branch passage 12d toward the side opposite to the one end opening 12a to which the tubular body 3 of the spirally wound tube A is connected, and the tip of the branch passage 12d Nozzle 13 is connected to.
Further, the bent flow path 12 is transported from compressed air or the like toward the inside of the tubular body 3 connected to the one end opening portion 12a from the supply pipe line 11 connected to the other end opening portion 12b through the bent portion 12c. By supplying the working fluid, the branch passage 12d branched from the bent portion 12c and the internal space 13a of the nozzle 13 are configured to have a negative pressure due to the venturi effect.

In the example shown in FIG. 2, the bent channel 12 is formed inside the main body 12 ′, and a pair of nipples are connected to one end of the main body 12 ′ as one end opening 12 a and the other end opening 12 b, and spiral The connecting end portion of the tubular body 3 of the winding tube A and the connecting end portion of the supply pipe line 11 are detachably connected.
A nozzle 13 is attached to the other end of the main body 12 ′ so as to be substantially in line with the tubular body 3 of the spirally wound tube A.
Further, an opening / closing valve 12e for controlling opening / closing of the other end opening portion 12b is provided in the vicinity of the other end opening portion 12b to which the supply pipe line 11 for supplying a transport fluid is connected. Alternatively, the supply fluid can be arbitrarily controlled to be supplied from the supply pipe line 11 by being opened and closed electrically.

  As an example of the operation of the recovery machine D1, a fluid for conveyance made of compressed air or the like is supplied from the supply pipe 11 to the bent flow path 12 by opening the on-off valve 12e, and the branch passage 12d and the nozzle 13 By making negative pressure in the internal space 13a, the conveyed object P such as lint scattered on the floor surface F is sucked from the tip opening 13b of the nozzle 13, and the inside of the tubular body 3 of the spirally wound tube A is moved at high speed. Moved and collected.

According to the transfer device D (collector D1) according to the second embodiment of the present invention, the tip of the conveyed product P comes into contact with the inner surface 3a of the tubular body 3, and the contact portion is partially worn and cut into grooves. Even if R occurs, the erosion caused by the kerf R is stopped by the helical hard wire 4.
Therefore, it is possible to prevent the tubular body 3 from being ruptured by the erosion of the kerf R and to stably move the conveyed product P over a long period of time.
Furthermore, the spiral wound tube A is lighter and more flexible than a recovery machine in which a spring hose in which a metal spring is embedded in a spiral shape is movable. There is an advantage that improvement can be achieved.

  In the first embodiment, the hard wire 4 is spirally wound so as to be disposed between the adjacent surfaces 1 a of the strip 1, but the invention is not limited to this. The hard wire 4 may be embedded at any position in the axial direction of the tubular body 3 as long as it is radially inward of the tubular body 3.

A spiral wound tube 1 strip 1a mutual surface 2 reinforced linear body 3 tubular body 3a inner surface 4 hard wire 11 supply pipeline P transported material

Claims (4)

A spirally wound tube formed by spirally winding a band-like body so that adjacent mutual surfaces are bonded,
A reinforcing linear body made of a hard synthetic resin is embedded in the inside of the belt-like body, and a helical hard wire is made to be closer to the inner surface of the tubular body formed by winding the belt-like body than the reinforcing wire body. A spirally wound tube embedded so as to be disposed on the radially inner side of the tubular body.   The spirally wound tube according to claim 1, wherein the hard wire is spirally wound so as to be disposed between the adjacent surfaces of the belt-like body.   The helically wound tube according to claim 1 or 2, wherein the belt-like body is made of a transparent or translucent synthetic resin, and the hard wire is a wire body thinner than an outer diameter of the reinforcing linear body. A transfer device for moving a transported object using the spirally wound tube according to claim 1, 2 or 3 at a high speed by a transporting fluid,
A transfer device, wherein a supply pipe for supplying the fluid to the tubular body is connected to the tubular body.

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