JP4440693B2 - Strip reversing device - Google Patents

Description

  The present invention relates to a reversing device used for reversing the front and back of a belt-like object in a belt-like material conveyance line.

2. Description of the Related Art Conventionally, there is a reversing device used for reversing the front and back of a strip in various belts such as plastic film, metal foil, paper, and nonwoven fabric.
For example, the reversing device shown in FIG. 8 is configured such that a reversing operation with respect to the belt-like object S is performed by appropriately arranged round bar-like or pipe-like members (hereinafter referred to as round bar-like members) 100 to 102. In other words, the round bar-like member 100 and the round bar-like member 101 are arranged in parallel to the horizontal plane with the round bar-like member 102 arranged horizontally, and at right angles to each other, It is arranged at an angle of 45 ° with respect to the member 102. By these round bar-like members 100 to 102, the belt-like object S carried on the back surface (shown in black) is conveyed in the direction of the arrow in the figure. As a result, a reversal operation is performed on the surface (displayed in white), and is carried out. In this case, the round bar-like members 100 and 101 are used non-rotatingly (Non-Patent Document 1).
In the above apparatus, when the round rod-like members 100 and 101 are pipe-like members, a large number of small holes are provided on the surface of the members, and air or water is ejected from these small holes to float the strip W. Or, the frictional resistance can be reduced by applying a fluororesin material or a plastic material to the members 100, 101 such as round bars, or, as disclosed in Patent Document 1, the members 100, 101 of the round bars, etc. Some have a plurality of rollers arranged on the surface to reduce mechanical loss with low friction.

However, in the conventional apparatus used for the reversing operation as described above, it is necessary to position each of the members 100 to 102 such as the round bar-like members while adjusting each other. In addition, the round bar-like member 100 and the round bar-like member 101 are arranged with the round bar-like member 102 therebetween, and an installation space corresponding to this gap is required. There is a problem in that the apparatus itself cannot be made compact because an installation space corresponding to a square area with the round bar-like member 101 as a diagonal line is required.
Product Information of Bellmatic Sales Co., Ltd. Internet <URL: http://bellma.com/jp/airTurnBar angle.html> JP 2003-160268 A

  The problems to be solved are that no labor is required for the adjustment work between the components of the device, and that the device itself is made compact to save space for installing the device. is there.

According to a first aspect of the present invention, there is provided a reversing device for a belt-like object having three substantially kamaboko-shaped outer shapes, each of which has an arc-shaped surface in a side cross-sectional view and a linear shape surface in a side cross-sectional view connected to the arc-shaped surface in a side cross-section. turn bars to the facing inner place corresponding to the bottom surface of semicylindrical form and, as seen in sectional side view arcuate surfaces of the semi-cylindrical form facing outward, moreover, the turn bar is integrally union of these substantially semicylindrical A triangular shape having a space defined by the bottom surface of the turn bar and having the above-described structure is formed , and the band-shaped object having an arc-shaped surface in a side sectional view (various band objects such as plastic film, metal foil, paper, and non-woven fabric) A large number of small holes for ejecting fluid such as air or water are provided at the position facing the surface, and the turn bar is combined with a triangle shape. Therefore, the adjustment work between the constituent members of the apparatus can be saved, and the apparatus itself can be made compact to save space for the installation of the apparatus. by levitate strip by ejecting liquid onto a position facing the strip of a sectional side view arcuate surface, to avoid direct contact at the position where the belt-like material is facing the strip of a sectional side view arcuate surface To reduce friction.
The small hole is not limited to the one formed by processing at a position facing the band-shaped object on the side sectional view arc-shaped surface, for example, a position facing the band-shaped object on the side sectional view arc-shaped surface When the member to be formed is a net-like or porous porous material, it may be formed using the through holes of the porous material.

Reversing device of the web of the present invention, because of the structure in combination to the triangle shape, it is possible not required troublesome adjustment between the components of the device, also compact device itself Thus, it is possible to save space for installing the apparatus , and to reduce friction by preventing the belt-like object from directly contacting the predetermined curved surface.

A reversing device according to a first embodiment of the present invention will be described with reference to FIG.
In the present reversing device 1, three turn bars 2 to 4 having a conveying surface facing the belt-like object S formed in an arc shape (predetermined curve shape) in a side sectional view are arranged in a regular triangle shape in a plan view, and in a side sectional view. In the present embodiment, the turn bars 2 to 4 are integrally combined so that the arc-shaped surface is positioned outside the regular triangular side, and the turn bars 2 to 4 have an arc shape in a side sectional view. A large number of air ejection small holes 2a to 4a for ejecting air (fluid) are respectively provided on the surface.

Here, the configuration of the reversing device 1 will be described in detail.
This reversing device 1 arranges the above-mentioned approximately semi-cylindrical turn bars 2 to 4 in a regular triangle shape in plan view so that the portion corresponding to the bottom of the semi-cylindrical shape faces inward, and is partitioned by the bottom of these turn bars 2 to 4. The air ejection small holes 2a to 4a are respectively formed in the arc-shaped surface in a side sectional view of the kamaboko shape. By the way, in this Embodiment, the air ejection small holes 2a-4a are not pierced over the whole surface of the said circular sectional view side view, but as shown in FIG. It is economical because it is drilled only at the position where it is to be drilled. Air supply pipes 2b to 4b are respectively attached to one end surfaces of the turn bars 2 to 4, and the air supplied through the air supply pipes 2b to 4b is supplied from the air ejection small holes 2a to 4a. Each squirts.

In such a reversing device 1, as shown in FIG. 1, when the strip S is carried at an angle of 60 ° with respect to the turn bar 2, the back side of the strip S is the turn bar 2. Facing the air ejection small hole 2a portion, wrapping around the turn bar 2 while levitating on the part, turning 60 ° with the turn bar 2 and carrying it in the direction of the turn bar 3, and the air ejection small hole 3a portion of the turn bar 3 Wrap around the turn bar 3 while floating. Then, the strip S is turned 60 ° by the turn bar 3 and is carried out in the direction of the turn bar 4, and is wound around the turn bar 4 while floating at the air ejection small hole 4a portion of the turn bar 4, and is turned 60 ° by the turn bar 4. The direction is changed, and the belt-like object S is carried out in the same direction as the carrying-in direction to the reversing device 1. In this case, the front and back of the belt-like object S are reversed when being carried into the reversing device 1 and when being carried out from the reversing device 1.
In FIG. 1, the arrow indicates the transport direction of the strip S, and the hatching applied to the strip S indicates the back surface thereof.

Next, a reversing device according to a second embodiment of the present invention will be described with reference to FIG.
The reversing device 10 has three turn bars 11 to 13 each having a conveying surface facing the belt-like object S formed in an arc shape (predetermined curve shape) when viewed from the side cross section, and the U-shaped side. Are arranged so that the lengths of the outermost sides 11c to 13c are equal to each other, and the support bar 14 is arranged in such a manner as to close the U-shaped opening, and the arcuate surface in a side sectional view is formed on the side of the U-shaped side. In the present embodiment, the turn bars 11 to 13 and the support bar 14 are integrally combined so as to be located on the outer side, and air (fluid) is formed on the arc-shaped surfaces in a side sectional view of the turn bars 11 to 13. ) Are ejected through a plurality of air ejection small holes 11a to 13a.

Here, the configuration of the reversing device 10 will be described in detail.
The reversing device 10 is formed in a U-shape in plan view so that the three substantially semi-cylindrical turn bars 11 to 13 face the inside corresponding to the bottom surface of the semi-cylindrical shape, and the outermost side of the U-shaped side. Are arranged so that the lengths 11c to 13c are equal to each other, and an elongated rectangular parallelepiped-shaped support bar 14 is arranged so as to close the U-shaped opening, and the turn bars 11 to 13 and the bottom of the support bar 14 are arranged. A square shape having a partitioned space is formed, and the air ejection small holes 11a to 13a are formed in the arc-shaped surface in a side sectional view of the kamaboko shape. Incidentally, in the present embodiment, the air ejection small holes 11a to 13a are not drilled over the entire surface of the arc-shaped surface in the side sectional view, but are opposed to the belt-like object S as shown in FIG. It is economical because it is drilled only at the position where it is to be drilled. Air supply pipes 11b and 13b are respectively attached to one end surfaces of the turn bars 11 and 13, and air supplied through the air supply pipes 11b and 13b is supplied from the above-described air ejection small holes 11a to 13a. Erupts.

  In such a reversing device 10, as shown in FIG. 2, when the belt-like object S is carried at 45 ° with respect to the turn bar 11 from the support bar 14 side, the belt-like object S The rear side faces the air ejection small hole 11a portion of the turn bar 11, winds around the turn bar 11 while floating on the part, turns 90 ° at the turn bar 11 and is carried out in the direction of the turn bar 12, and the air of the turn bar 12 It winds around the turn bar 12 while floating at the small ejection hole 12a. Then, the strip S is turned 90 ° by the turn bar 12 and is carried out in the direction of the turn bar 13. The direction is changed and carried out to the support bar 14 side. At this time, the front and back of the belt-like object S are reversed when being carried into the reversing device 10 and when being carried out from the reversing device 10.

Next, an inverting device according to a third embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 3, the reversing device 20 has three turn bars 21 to 23 in which the conveying surface facing the strip S is formed in an arc shape (predetermined curve shape) when viewed from the side section, and is arranged in a regular triangle shape in plan view. The turn bars 21 to 23 are combined such that the arc-shaped surface in a side sectional view is positioned outside the side of the equilateral triangle, and the arcs in a side sectional view of the turn bars 21 to 23 are formed. On the shape surface, the rotation shaft 24a (see FIG. 6) is 30 ° (predetermined angle) with respect to the axis of the turn bars 21 to 23, in this embodiment, the axis of the shaft bars 21a to 23a of the turn bars 21 to 23. In this embodiment, twelve (plural) rollers 24 are arranged.

Here, the configuration of the reversing device 20 will be described in detail with reference to FIGS.
In the reversing device 20, the turn bars 21 to 23 in FIG. 4 are constituted by a pair of roller casings 25a and 25b and twelve rollers 24 arranged on the outer periphery of the roller casings 25a and 25b, as shown in FIG. A plurality of radial rollers 25 to be connected are arranged in the axial direction of the shaft rods 21a to 23a, respectively, and fitting holes 25a ₁ , 25b provided in the center portions of the roller casings 25a, 25b of the radial rollers 25 are arranged. The shaft rods 21a to 23a are respectively fitted into the shaft ₁ , and the connected radial rollers 25 are screwed into nuts 26 (not shown) threaded on the shaft rods 21a to 23a to screw the shaft rods. 21a to 23a are fixed respectively. However, in the radial roller 25 and the radial roller 25 adjacent to the radial roller 25, the rollers 24 of the radial roller 25 and the rollers 24 of the radial roller 25 adjacent to the radial roller 25 do not overlap each other. Thus, a phase difference of 30 ° is provided in the circumferential direction.
The present reversing device 20 has a triangular shape having the space of a regular triangular shape in a plan view, in which the turn bars 21 to 23 having such a configuration are arranged in a regular triangular shape in a planar view and are partitioned by the turn bars 21 to 23. is there.

  However, in the present embodiment, the roller 24 is disposed over the outer periphery of the roller casings 25a and 25b, and therefore, the above-described arc-shaped surface in a side sectional view is positioned outside the equilateral triangular side. This is not a restriction. However, in the turn bar 30 as shown in FIG. 7, it is arranged only on a part of the outer periphery of the roller casings 25a, 25b (contact portion with the belt-like object S) from the economical viewpoint such as cost (for example, The roller 24 is not disposed in a non-contact portion such as A in the figure), and in such a turn bar 30, the arc-shaped surface (surface on which the roller 24 is disposed) in a side sectional view is formed in the above-described regular triangular shape. Of course, it must be located outside the edge.

  By the way, the roller casings 25a and 25b are members that are plastic-molded by the same mold and are substantially the same members. In this embodiment, each roller casing 25a, 25b is equally provided along the outer periphery on the facing surface side, and in this embodiment, a right-angled triangular prism groove 26 as shown in FIG. 12 are formed so that the upper surface side to be opened and the side surfaces facing the side surfaces 26b and 26c are opened, respectively. As shown in FIG. 5, the roller casings 25a and 25b are connected to each other as shown in FIG. The elements of the radial roller 25 are configured by overlapping the side surfaces 26c so as to face each other. A side hole 26b of each groove 26 of the roller casings 25a and 25b is provided with a small hole (not shown) having a bottom at substantially the center, and the roller casings 25a and 25b are overlapped with the small hole. When arranged, a plain bearing for supporting the rotating shaft 24a of the roller 24 is formed. When the rotary shaft 24a is mounted on the slide bearing, the rotary shaft 24a is pivotally supported by 30 ° with respect to the shaft cores of the shaft rods 21a to 23a, and the roller 24 includes a roller casing 25a, It is arranged so as to be rotatable in a space formed by both grooves 26 of 25b.

In such a reversing device 20, as shown in FIG. 3, when the belt-like object S is loaded at an angle of 60 ° with respect to the turn bar 21, the back surface side of the belt-like object S is the turn bar 21. The roller 24 comes into contact with the turn bar 21, is turned around the turn bar 21 by 60 °, and is conveyed in the direction of the turn bar 22, and comes into contact with the roller 24 group of the turn bar 22 and winds around the turn bar 22. Then, the strip S is turned by 60 ° at the turn bar 22 and carried in the direction of the turn bar 23. The belt S comes into contact with the roller 24 group of the turn bar 23 and is wound around the turn bar 23. The turn bar 23 is turned by 60 °. Thus, the strip S is carried out in the same direction as the carrying-in direction to the reversing device 20. In this case, the front and back of the belt-like object S are reversed when being carried into the reversing device 20 and when being carried out from the reversing device 20.
In FIG. 3, the arrow indicates the transport direction of the strip S, and the hatching applied to the strip S indicates the back surface thereof.

By the way, the reversing device 10 is such that the air ejection small holes 11a to 13a are formed in the arc-shaped surface in the side cross-sectional view of the turn bars 11 to 13, but in the arc-shaped surface in the side cross-sectional view, For example, a reversing device in which the rollers 24 are arranged may be configured. However, in this case, the roller 24 and the rotating shaft 24a are arranged so as to form 45 ° (predetermined angle) with respect to the axis of the turn bar.
Further, in order to reduce the friction caused by the contact between the strip S and the predetermined curve shape surface in the side view of the turn bar, as a simpler method, a fluororesin material, a plastic material or the like is applied or pasted on the curve shape surface. Such a reversing device may be configured.

  This reversing device can maintain the conventional advantage of reducing mechanical loss with low friction, and can eliminate the need for labor for adjustment work between component members of the device. In addition to the advantage of saving space for installation, it can be widely used in the transport line of strips.

It is a lineblock diagram of the inversion device concerning a 1st embodiment of the present invention. It is a block diagram of the inversion apparatus which concerns on the 2nd Embodiment of this invention. It is a block diagram of the inversion apparatus which concerns on the 3rd Embodiment of this invention. It is a block diagram of the turn bar of FIG. It is a block diagram of the radial roller which comprises the structure of the turn bar of FIG. It is a fragmentary perspective view of the radial roller of FIG. It is a block diagram of the turn bar used instead of the turn bar of FIG. It is a block diagram of the conventional inversion apparatus.

Explanation of symbols

1, 10, 20 Reversing device 2-4 Turn bar 2a-4a Air ejection small hole 11-13 Turn bar 14 Support bar 11a-13a Air ejection small hole 21-23 Turn bar 24 Roller 30 Turn bar S Strip

Claims (1)

Facing inwardly where the outer shape corresponds to a sectional side view arcuate surface and turn bar three substantially semicylindrical formed in a sectional side view straight shaped surface continuous to the side sectional view a circular arc-shaped surface to the bottom surface of semicylindrical form In addition, a space defined by the bottom surface of the turn bar having a structure in which these substantially semi- cylindrical turn bars are integrally combined so that the arc-shaped surfaces in a side sectional view of the kamaboko form face outward. A reversing device for a band-shaped object, characterized in that it has a triangle shape and is provided with a large number of small holes for ejecting fluid at a position facing the band-shaped object having an arc-shaped surface in a side sectional view.

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