JPH07127631A - Variable suction width type suction roller - Google Patents

Abstract

PURPOSE:To provide a variable suction air type suction roller which can simply adjust the suction width suitable for the width of an object to be carried by exhausting air in a space surrounded with an inner cylinder and partition plates from an exhaust port outward, rotating an outer cylinder, and carrying the object while suckedly fitting it on the surface of the outer cylinder. CONSTITUTION:A rotatable outercylinder 1 journaling an object F to be carried on its surface is rotated by means of a belt wound on a pulley 2, a drive motor, and the like through the bearing 1b of the fixed shaft 4 of an inner cylinder 3. The outer cylinder 1 is rotationally moved on the surface of the inner cylinder 3 arranging an opening part 3a in the range of an embracing angle of the object F. At this time, air surrounded with the inner cylinder 3 and both partition plates 5, 5 is sucked by means of a suction device provided on the outside through an exhaust port 8a, a vent hole 8, and the suction port 7c of a drive shaft 7, the pressure is reduced, and the inner face of the object F on the surface of the outer cylinder 1 is suckedly fitted to the surface in the range of the embracing angle. The object F is carried by rotating the outer cylinder on the surface of the fixed inner cylinder 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction width variable suction roller having a large number of ventilation holes on a surface for carrying a thin film material such as cloth and sheet.

[0002]

2. Description of the Related Art A conventional suction roller has a large number of small ventilation holes formed in the entire width of the outer cylinder surface, and the inner cylinder is fitted inside the outer cylinder to hold the hugging angle of the roller surface when the object is conveyed. The inner cylinder is provided with an opening in the range, the air inside the inner cylinder is exhausted from the exhaust port to the outside, and the transported object is supported on the surface of the outer cylinder. Vacuum suction is performed from the inside depending on the angle, the inner surface of the conveyed product is adsorbed to the peripheral wall of the outer cylinder, and the conveyed product is conveyed while rotating the suction roller.

[0003]

However, such a suction roller cannot control the suction width of the suction roller depending on the width of the conveyed product, and the width of the conveyed product is the width of the roller (outer cylinder). If it is narrower, air is sucked from the peripheral edge and the degree of adsorption of the conveyed object becomes weaker, and air is sucked from the ventilation holes that deviate from the width of the conveyed object, so that the conveyed object is not sufficiently adsorbed on the surface of the suction roller, It was a cause of poor transportation. For this reason, when carrying a narrow product, it is common to apply tape or the like to the surface of the suction roller to make the seal, but it is troublesome to apply the tape each time, and the suction roller is It was not an appropriate treatment because it would stain the surface. Further, the suction roller is also exchanged for each conveyed product, but the suction roller exchange operation is complicated each time. The present invention provides a suction width variable suction roller that can adjust the suction width of a suction roller suitable for the width of a conveyed product by a simple method without applying a seal or the like adapted to the width of the conveyed product to the surface of the suction roller. To do.

[0004]

The above object of the present invention is achieved by the following constitution. A rotatable outer cylinder formed with a large number of ventilation holes for supporting the transported object on the surface and a rotatably fitted inside the outer cylinder, and fixed with an opening formed only within a predetermined opening angle range. In the suction roller having an exhaust port for discharging the air in the inner cylinder to the outside, a partition plate movable along the inner surface of the inner cylinder having the opening, and the partition plate. The partition member in the inner cylinder having a width adapted to the width of the conveyed article on the surface of the outer cylinder. The plate is moved through the driving member by the operation of the operation member, the suction width in the inner cylinder is adjusted to position the partition plate, and the air in the space surrounded by the inner cylinder and the partition plate is moved to the above-mentioned position. Discharge from the exhaust port to the outside, rotate the outer cylinder, Is characterized in that conveyed while adsorbed on the cylinder surface.
In particular, the partition plate is composed of two sheets, the through hole of the partition plate is engaged with the thread groove of the drive member, and the partition plate is moved by the rotation of the drive member.

[0005]

In the suction width variable suction roller according to the present invention, when the conveyed product is conveyed while being sucked inward by the rotation of the outer cylinder having a large number of ventilation holes, the width of the conveyed product is the width having the ventilation hole of the outer cylinder. When it is narrower, the partition plate in the inner cylinder can be moved by rotating the drive member by operating the operating means, and the suction width in the inner cylinder can be regulated. As a result, it is possible to reliably transport the transported object. Therefore, it is not necessary to change the size of the suction roller by exchanging the suction roller depending on the transported object, and the suction width of the suction roller can be easily changed without the need to perform work such as tacking on the surface of the suction roller. can do.

[0006]

1 is a sectional view in the axial direction of an embodiment of a suction roller of the present invention. FIG. 2 is a sectional view in the axial direction of another embodiment of the present invention. FIG. 3 is a view orthogonal to the axial center when the suction roller receives the conveyed object in FIG.
It is a sectional side view taken along the line A '. FIG. 4 is a plan view of an embodiment of a partition plate used in the suction roller of the present invention.

A suction roller of the present invention will be described based on an embodiment shown in the drawings. Reference numeral 1 denotes an outer cylinder having a large number of small ventilation holes 1a, 1a, ... Perforated in its peripheral wall, and a pulley 2 as a power transmission mechanism is fixed to this rotating shaft 1b. The rotary shaft 1b of the outer cylinder 1 is rotatably supported by fixed shafts 4 and 4 which are rotatably fitted in fixed bases 13 and 13 via bearings 1e and 1e. Reference numeral 5 denotes an opening 3 formed in the peripheral wall of the inner cylinder 3.
In the partition plate that moves along the inner wall of a, the screw groove 5a formed in the through hole of the partition plate 5 is the forward screw groove 7a of the drive shaft 7 rotatably fitted in the fixed shaft 4 and the reverse screw groove 7a. Thread groove 7
It meshes with b. The opening 3a of the inner cylinder 3 is bored within the holding angle range of the conveyed product F that contacts the surface of the outer cylinder 1. An intake port 7c is provided in the central portion of the drive shaft 7. Reference numeral 6 is a guide surface of the partition plate 5 in a portion where the opening 3a of the inner cylinder 3 is not formed.

Reference numeral 8 is a vent hole provided in the drive shaft 7, which communicates with an intake port 7c of the drive shaft 7, is opened to the outside, and has an exhaust port 8
An intake device (not shown) is connected to a. Reference numeral 9 denotes an operation handle fixed to the drive shaft 7. By this operation, the drive shaft 7 can be rotated to move the partition plate 5 in the inner cylinder 3 along the guide surface 6. Reference numeral 10 denotes a wire rod wound around the surface of the peripheral wall in which the vent holes 1a, 1a ... Of the outer cylinder 1 are formed, and is wound around the surface of the outer cylinder 1 with an appropriate space between adjacent wire rods 10. . As the wire rod 10, an iron wire, a metal wire such as a piano wire, other elastic rubber wire, or a wire rod made of a synthetic resin can be used.

Reference numeral 11 denotes a connecting portion between the end portion of the drive shaft 7 and the fixed shaft 4, to which the drive shaft 7 is rotatably fitted and is connected with a play at an appropriate interval. Reference numeral 12 is a stopper for stopping the drive shaft 7 at a predetermined position. The operation handle 9 is operated to rotate the drive shaft 7, and the partition plates 5 and 5 meshing with the screw grooves 7a and 7b are moved in parallel to form an inner cylinder. After adjusting the interval between the partition plates 5 and 5 in 3 and stopping the partition plates 5 and 5 at predetermined positions,
The drive shaft 7 is fixed.

An embodiment of the suction roller of the present invention shown in the drawings will be described. As shown in FIG. 1, the inner cylinder 3 is rotated by a belt, a drive motor and the like (not shown) in which a rotatable outer cylinder 1 supporting a conveyed object F on the surface is wound around a pulley 2.
The fixed shaft 4 is rotated via the bearing 1b. The outer cylinder 1 rotates on the surface of the inner cylinder 3 in which the opening 3a is arranged in the range of the holding angle of the conveyed product F as shown in FIG. At this time, the air surrounded by the inner cylinder 3 and the partition plates 5 and 5 is sucked from the exhaust port 8a, the vent hole 8 and the intake port 7c of the drive shaft 7 by an intake device (not shown) provided outside. The pressure is reduced and the inner surface of the conveyed product F on the surface of the outer cylinder 1 is adsorbed to the surface within the range of the holding angle of the outer cylinder 1 (the range of the arrow in FIG. 3).

The object F is conveyed by rotating the surface of the inner cylinder 3 to which the outer cylinder 1 is fixed. When the conveyed article F has a width narrower than the width of the outer cylinder 1, the operation handle 9 is operated to rotate the drive shaft 7, and each partition having a screw groove 5a that meshes with the screw grooves 7a and 7b of the drive shaft 7. The plate 5 moves along the guide surface 6 of the inner cylinder 3 in the directions of the arrows shown in FIGS. 1 and 2, respectively, and the intake distance between the partition plates 5 and 5 becomes narrower so that the width of the article F becomes the same width. adjust.

In the second embodiment shown in FIG. 2, the wire 10 is wound around the surface of the outer cylinder 1 at a predetermined interval.
Since it is formed in this manner, the conveyed product F does not directly contact the surface of the ventilation hole 1a of the outer cylinder 1 but contacts the surface of the wire rod 10 by line contact. As a result, since the contact surface between the inner surface of the conveyed object F and the outer cylinder 1 is large, the contact is softened, and the back surface of the conveyed object F is not scratched like a suction mark. It can be transported without damaging it. Further, the shape of the vent hole 1a of the outer cylinder 1 may be an elongated elliptical shape.

In the embodiment shown in this drawing, the suction roller conveys the object F to the center of the outer cylinder 1,
In the case of the outer cylinder 1 that conveys the conveyed object F by moving it to one end side of the suction roller, it is possible to adjust the intake width by providing one partition plate 5 that slides in the inner cylinder 3 and moving it in one direction. . The partition plate of the embodiment used in the suction roller of the present invention has a shape shown in FIG. 4 so as to fit into the cylindrical shape of the inner cylinder 3, but the shape is not limited to this shape.
It can be arbitrarily changed depending on the shape of the fixed inner cylinder 3 forming the intake chamber, and it may be formed in the same shape as the side surface of the intake chamber and movably formed.

[0014]

The suction width variable suction roller according to the present invention can easily adjust the suction width according to the width of a conveyed object, and therefore, it is not necessary to attach a tape or the like for adjusting the width on the surface of the outer cylinder roller. The suction width is adjusted by one suction roller, such that it is not necessary to replace the suction roller according to the size of the conveyed object. Therefore, it is economically excellent.

[Brief description of drawings]

FIG. 1 is a sectional view in the axial direction of an embodiment of a suction width variable suction roller of the present invention.

FIG. 2 is a sectional view in the axial direction of another embodiment of the present invention.

3 is a cross-sectional side view taken along the line AA ′ of FIG. 2 which is orthogonal to the axial center when the suction roller receives a conveyed object.

FIG. 4 is a plan view of an embodiment of a partition plate used in the suction roller of the present invention.

[Explanation of symbols]

 1 ... Outer cylinder 1a ... Vent hole 2 ... Pulley 3 ... Inner cylinder 3a ... Opening part 4 ... Fixed shaft 5 ... Partition plate 6 ... Guide surface 7 ... Drive shaft 8 ... Ventilation hole 9 ... Operation handle 10 ... Wire rod

Claims (4)

[Claims] 1. A rotatable outer cylinder formed with a large number of ventilation holes for supporting a conveyed object on the surface, and a rotatably fitted inside the outer cylinder, and an opening portion only within a predetermined opening angle range. A suction roller having an exhaust port for discharging the air in the inner cylinder to the outside, a partition plate movable along the inner surface of the inner cylinder having the opening, The partition plate includes a driving member that engages with the partition plate and translates the partition plate in the inner cylinder, and an operation member that operates the driving member. The partition plate in the cylinder is moved through the drive member by the operation of the operation member, the suction width in the inner cylinder is adjusted to position the partition plate, and the partition plate is surrounded by the inner cylinder and the partition plate. The air in the space is discharged to the outside from the exhaust port, the outer cylinder is rotated, and An intake width variable suction roller, which conveys the conveyed product while adsorbing the conveyed product onto the surface of the outer cylinder. 2. The driving member is rotatably loosely fitted in a fixed shaft of the inner cylinder, has a thread groove formed on a surface thereof, and engages with a thread groove of a through hole provided at the center of the partition plate. The suction width variable suction roller according to claim 1, wherein the suction roller has a variable suction width. 3. The partition plate is composed of two sheets, and the partition plates are formed by the rotation of the rotary shaft of the driving member so that the thread grooves of the through holes move in opposite directions. Drilling so as to move in mutually opposite directions, each of the partition plates facing each other in the inner cylinder to a width corresponding to the width of the transported object transported to the outer cylinder surface, by moving the drive member, The suction width variable suction roller according to claim 1, wherein the space between the partition plates is adjusted so that the air in the space surrounded by each partition plate and the inner cylinder is discharged from the discharge port. 4. The suction roller according to claim 1, wherein wires are wound around the peripheral wall surface of the outer cylinder at predetermined intervals.