JP3280161B2 - Transfer device using suction roller - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveying device using a suction roller, and more particularly to a conveying device for conveying a long photographic film in a photographic film manufacturing process.

[0002]

2. Description of the Related Art In general photographic film, small holes called perforations are continuously provided on both sides of the film. At the time of feeding the film, the sprocket gear is often engaged with the small hole to convey the film.

[0003] However, in film transport using a sprocket gear, there is a problem that pressure fogging occurs due to the urging force of the sprocket gear and it is not possible to cope with high-speed transport of a film for improving production capacity. For this reason, in transporting a photographic roll film or the like, a film transport without using perforation has been devised, and is actually used in a film manufacturing stage or the like.

[0004] As a film transport device, the film wound around the outer diameter surface (outer peripheral surface) of the suction roller is sucked by the suction roller, and the film is transported by rotating the suction roller in this state. There is a transport device. In this transfer device, an air intake hole penetrating from the inner diameter surface (inner peripheral surface) to the outer diameter surface of the cylindrical portion is continuously formed in the cylindrical portion in contact with the film to be transferred over the entire circumference of the cylindrical portion. During the transfer, a suction roller that is driven to rotate is used.

[0005]

By the way, since the cylindrical portion of the suction roller is in constant contact with the film and sucks the film, the air around the film is always sucked. As a result, a large amount of dust in the air as well as the dust coming out of the film is sucked in, and the cylindrical portion of the suction roller is heavily contaminated. Dust adheres (transfers) to the film.

In order to avoid this situation, it is necessary to frequently clean the suction roller. However, at the time of this cleaning, the transport of the film must be stopped, and if this is a production line, the production efficiency of the film is reduced.

The present invention has been made in view of the above problems, and has as its object to automatically remove dirt from a cylindrical portion of a suction roller without stopping film transport, and to adhere to the suction roller. It is an object of the present invention to realize a transport device using a suction roller that can avoid generation of scratches on a film surface due to dust and transfer of dust from the suction roller to a film.

[0008]

A first aspect of the present invention for achieving the above object is as follows.
In the invention, an intake hole penetrating from the inner diameter surface to the outer diameter surface of the cylindrical portion is continuously formed in the cylindrical portion that comes into contact with the film to be conveyed over the entire circumference of the cylindrical portion. A driven suction roller, a first portion of which at least a portion is arranged in a stationary state inside the inner diameter of the cylindrical portion of the suction roller and faces an inner diameter surface of a portion of the cylindrical portion which is in contact with the film to be conveyed; A compartment, and a partition member forming a second compartment opposing the inner diameter surface of the portion of the cylindrical portion at the non-contact position with the film to be conveyed, and the air in the first compartment is provided. Suctioning and supplying compressed air to the second compartment.

According to a second aspect of the invention for achieving the above object, in addition to the configuration of the first aspect, the second partition is disposed outside the cylindrical portion of the suction roller so as to face the second compartment. A suction duct for sucking air coming out of the chamber is provided.

Regarding the shape of the partition member, from the viewpoint of facilitating the formation of the first and second compartments, the inner diameter of the cylindrical portion at the position where the cylindrical portion is in contact with the film to be conveyed. And a nozzle is provided in the second compartment, and air is ejected from the nozzle to an inner diameter surface of a portion of the cylindrical portion at a non-contact position with the film to be conveyed. Are preferred.

From a similar point of view, a first compartment is formed between the cylindrical portion and the inner surface of the portion at the position of contact with the film to be conveyed as the partition member. Between the inner surface of the portion that is not in contact with
Can be used.

When a suction air discharge path for discharging air sucked from the first compartment and a compressed air supply path for supplying compressed air to the second compartment are formed in the partition member,
It is preferable because the formation of both paths is simplified. In particular, it is preferable that the partition member is formed of a substantially columnar member, the suction air discharge path is formed substantially on the center axis of the partition member, and the compressed air supply path is formed at a position not substantially on the center axis of the partition member.

As the suction roller, a film having an annular groove formed around the outer diameter surface of the cylindrical portion so as to wind the outer diameter surface and having an intake hole opened at the bottom of the groove may be used. It is preferable from the viewpoint of improving the suction force.

[0014]

In the transfer device using the suction roller of the first invention, the film to be transferred is sucked into the cylindrical portion of the suction roller by sucking the air in the first compartment, and the suction roller is driven by the suction roller. It is transported as it rotates. On the other hand, since the compressed air is supplied to the second compartment, the air is introduced into the cylindrical portion at the portion not in contact with the film, that is, from the intake hole of the cylindrical portion facing the second compartment. Spouting outside.

For this reason, the outer diameter surface and the intake hole of the cylindrical portion are exposed to the ejected air, and the dust attached to the outer diameter surface and the intake hole of the cylindrical portion are separated from the cylindrical portion and blow off together with the ejected air. As described above, since the outer diameter surface and the intake hole of the cylindrical portion are constantly cleaned, the dirt on the cylindrical portion of the suction roller can be automatically removed without stopping the film transport, and the dust adhering to the suction roller can be removed. And the transfer of dust from the suction roller to the film can be avoided.

In the transfer device using the suction roller according to the second aspect of the present invention, since the suction duct is disposed opposite to the second compartment, the suction duct is separated from the cylindrical portion by being exposed to the jet air. The dust is sucked into the suction duct together with the blast air. For this reason, dust does not scatter around.

[0017]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a common embodiment of the first and second inventions, and FIG. 2 is a sectional view taken along the line II-II of the embodiment of FIG. In these figures, reference numeral 1 denotes a suction roller that is driven to rotate during film transport, and has a cylindrical portion 1a that comes into contact with the film 2 as an object to be transported. In the cylindrical portion 1a of the suction roller 1, an intake hole 1b penetrating from the inner diameter surface to the outer diameter surface of the cylindrical portion 1a is provided.
Are continuously drilled over the entire circumference.

Reference numeral 3 denotes an annular film guide provided near both ends of the cylindrical portion 1a of the suction roller 1, and the interval thereof is selected to be substantially equal to the width of the film 2. Reference numeral 4 denotes a drive shaft which is coaxially attached to one end of the suction roller 1 using a bolt or the like, and is rotationally driven by receiving a rotational force from a motor or the like (not shown) during film transport.

Reference numeral 5 denotes a partition member in which the right end in FIG. 1 is disposed inside the inner diameter of the cylindrical portion 1a of the suction roller 1. The inner diameter surface of the portion of the cylindrical portion 1a at the contact position with the film 2 (see FIG. An inner diameter surface of a portion of the cylindrical portion 1a at a non-contact position with the film 2 (within an angle range of L2 in FIG. 2) and one first compartment 5a facing the angle range L1.
And two second compartments 5b facing each other. Here, the first compartment 5a is formed between an inner diameter surface of a portion of the cylindrical portion 1a at a contact position with the film 2 and a second compartment 5a.
Is provided with a nozzle NZ that opens to the inner diameter surface of the portion of the cylindrical portion 1a that is not in contact with the film 2.

In order to suck the air in the first compartment 5a and supply compressed air to the second compartment 5b, the partition member 5
Inside, a suction air discharge path 5c for discharging air sucked from inside the first compartment 5a and a compressed air supply path 5d for supplying compressed air to the second compartment 5b are formed. In this embodiment, as shown in FIG. 3, the partition member 5 is formed from a substantially columnar member, the suction air discharge path 5c is formed substantially on the central axis of the partition member 5, and the compressed air supply path 5d is formed. The partition member 5 is formed at a position that is not substantially on the center axis.

In order to increase the degree of sealing between the first and second compartments 5a and 5b, the outer peripheral surface of the partition member 5, which is a gap connecting the compartments 5a and 5b, and the inner diameter surface of the cylindrical portion 1a. It is preferable to make the gap extremely small and increase the circumferential length of the minute interval.

The partition member 5 is fixed to the support member 6 in a cantilevered state using bolts or the like (not shown) in order to maintain a stationary state. The inner ring of the bearing 7 and the outer ring of the bearing 8 are fitted to the intermediate position and the distal end position of the partition member 5, respectively, and the suction roller 1 is fitted to the outer ring of the bearing 7 and the inner ring of the bearing 8. . Thus, the suction roller 1 is rotatably supported.

Reference numeral 9 denotes a suction duct which is a main component of the second invention. The suction duct 9 is provided outside the cylindrical portion 1a of the suction roller 1.
The second compartment 5b is disposed to face the second compartment 5b, and sucks air coming out of the second compartment 5b.

Next, the operation of the transport device having the above configuration will be described. First, the air in the first compartment 5a is sucked using a pump or the like, and the compressed air is supplied to the second compartment 5b.
By sucking the air in the first compartment 5a, the air between the cylindrical portion 1a and the film 2 flows into the first compartment 5a through the intake hole 1b, and the film 2 as the object to be conveyed.
Is sucked by the cylindrical portion 1a of the suction roller 1. In this state, when the drive shaft 4 is rotated by a motor or the like and the suction roller 1 is rotated, the film 2 is transported as the suction roller 1 rotates.

During this transfer operation, the second compartment 5b
Is supplied to the second compartment 5b, the second compartment 5a faces the intake hole 1b of the cylinder 1a (the portion of the cylinder 1a at a position not in contact with the film 2) facing the second compartment 5b. Room 5
Air is blown from the nozzle NZ of b, and air is blown out of the cylindrical portion 1a from the intake hole 1b. For this reason, the outer diameter surface of the cylindrical portion 1a and the intake hole 1b are exposed to the jet air, and the dust adhering to the outer diameter surface of the cylindrical portion 1a and the air intake hole 1b are separated from the cylindrical portion 1a, and together with the jet air. Blow off.

The dust separated from the cylindrical portion 1b is sucked into the suction duct 9 together with the jet air. Therefore, the outer diameter surface of the cylindrical portion 1a and the intake hole 1b are constantly cleaned, and no dust is scattered around. Therefore, the suction roller 1 is automatically stopped without stopping the transport of the film 2.
Of the cylindrical portion 1a can be removed, and generation of scratches on the surface of the film 2 due to dust attached to the suction roller 1 and transfer of dust from the suction roller 1 to the film 2 can be avoided.

Here, as the suction roller 1, an annular groove is formed on the outer diameter surface of the cylindrical portion 1a so as to wind the outer diameter surface, and the suction hole 1b is opened at the bottom of the groove. The use of the above improves the suction force of the film 2 as compared with the case where the intake hole 1b is formed in the outer diameter surface having no groove. The reason for this is that the entire space in the groove becomes a negative pressure, and the suction area increases.

In the above embodiment, the first compartment 5a is formed between the cylindrical portion 1a and the inner surface of the portion at the contact position with the film 2, and the second compartment 5b has Cylindrical part 1
Although a nozzle NZ that opens to the inner diameter surface of the portion a that is not in contact with the film 2 is provided, the first and second compartments 5a and 5b formed by the partition member 5 are arranged as shown in FIGS. (In FIGS. 4 to 6, parts corresponding to those in FIGS. 1 to 3 are denoted by the same reference numerals.)

In any of the configurations shown in FIGS. 4 to 6, a first compartment 5a is formed as a partition member 5 between the cylindrical portion 1a and the inner diameter surface of the portion at the contact position with the film 2, and Part 1a
In this case, the second compartment 5b is formed between the film 2 and the inner surface of the portion at the non-contact position.

In the case of these configurations, since the nozzle NZ is not provided in the second compartment 5b, no air is blown from the second compartment 5b toward the intake hole 1b, but the air is blown from the second compartment 5b. Therefore, the point at which air blows out of the cylindrical portion 1a is the same. Therefore, also in each of these configurations, the outer diameter surface of the cylindrical portion 1a and the intake hole 1b are exposed to the jet air,
Dust that has adhered to the outer diameter surface of the cylindrical portion 1a and the intake hole 1b is separated from the cylindrical portion 1a, blows off with the jet air, and is sucked into the suction duct 9 together with the jet air.

[0031]

As described above, in the first invention,
By the partition member in a stationary state, inside the inner diameter of the cylindrical portion of the suction roller, the first compartment facing the inner diameter surface of the portion of the cylindrical portion at the contact position with the conveyed film, and the conveyed film of the cylindrical portion Forming a second compartment facing the inner diameter surface of the portion in the non-contact position, sucking air in the first compartment,
Because it was configured to supply compressed air to the second compartment,
Air is blown out of the cylindrical portion from the cylindrical portion of the portion that is not in contact with the film, that is, from the intake hole of the cylindrical portion facing the second compartment. Therefore, the outer diameter surface and the intake hole of the cylindrical portion are exposed to the ejected air, and the dust attached to the outer diameter surface and the intake hole of the cylindrical portion are separated from the cylindrical portion and blow off together with the ejected air.

Therefore, according to the first aspect of the present invention, since the outer diameter surface and the intake hole of the cylindrical portion are constantly cleaned, the dirt on the cylindrical portion of the suction roller is automatically removed without stopping the film transport. Thus, it is possible to avoid generation of scratches on the film surface due to dust attached to the suction roller and transfer of dust from the suction roller to the film.

Further, in the second invention, in addition to the first invention, since the suction duct is disposed opposite to the second compartment, the suction duct is separated from the cylindrical portion by being exposed to the jet air. Dust is sucked into the suction duct together with the blast air. Therefore, not only can the outer diameter surface and the intake hole of the cylindrical portion be constantly cleaned, but also the dust separated from the cylindrical portion does not scatter around.

Regarding the shape of the partition member, the first compartment is formed between the cylindrical portion and the inner diameter surface of the portion at the contact position with the film to be conveyed, and the second compartment is provided with a nozzle. When the nozzle is configured to eject air to the inner diameter surface of the portion of the cylindrical portion that is not in contact with the film to be conveyed, the first and second compartments can be easily formed. This point forms a first compartment between the cylindrical portion and the inner diameter surface of the portion at the contact position with the transported film as the partition member, and is at a non-contact position with the transported film of the cylindrical portion. The same applies to the case where the second compartment is formed between the inner diameter surface of the portion and the second compartment.

When a suction air discharge path for discharging air sucked from the first compartment and a compressed air supply path for supplying compressed air to the second compartment are formed in the partition member,
The formation of both paths is simplified. In particular, when the partition member is formed from a substantially columnar member, the suction air discharge path is formed substantially on the center axis of the partition member, and the compressed air supply path is formed at a position not substantially on the center axis of the partition member, Not only can the formation be simplified, but also the suction air discharge path and the compressed air supply path can extend in the axial direction and the radial direction, respectively, and piping between the two paths and the pump and the like can be facilitated.

As a suction roller, an annular groove is formed on the outer diameter surface of the cylindrical portion so as to wind the outer diameter surface.
The use of a groove having an opening at the bottom of the groove can improve the film suction force.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a common embodiment of the first and second inventions.

FIG. 2 is a sectional view taken along the line II-II of the embodiment in FIG. 1;

FIG. 3 is a perspective view showing a shape of a partition member in FIGS. 1 and 2;

FIG. 4 is a sectional view showing another embodiment common to the first and second inventions.

FIG. 5 is a sectional view showing another embodiment common to the first and second inventions.

FIG. 6 is a sectional view showing another embodiment common to the first and second inventions.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Suction roller 1a Cylindrical part 1b Intake hole 2 Film 3 Film guide 4 Drive shaft 5 Partition member 5a First compartment 5b Second compartment 5c Suction air discharge path 5d Compressed air supply path 6 Support member 7, 8 Bearing 9 Suction duct

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B65H 20/12

Claims (7)

(57) [Claims] 1. A cylindrical portion, which comes into contact with a film as an object to be conveyed, is provided with an intake hole penetrating continuously from the inner diameter surface to the outer diameter surface of the cylindrical portion over the entire circumference of the cylindrical portion. A rotationally driven suction roller, a first roller which is at least partially disposed inside the inner diameter of the cylindrical portion of the suction roller and is opposed to the inner diameter surface of a portion of the cylindrical portion which is in contact with the film to be conveyed; And a partition member forming a second compartment facing an inner diameter surface of a portion of the cylindrical portion at a position not in contact with the film to be conveyed, wherein air in the first compartment is provided. A suction device for supplying compressed air to the second compartment. 2. A cylindrical portion, which comes into contact with a film as an object to be conveyed, is provided with an intake hole penetrating continuously from the inner diameter surface to the outer diameter surface of the cylindrical portion over the entire circumference of the cylindrical portion. A rotationally driven suction roller, a first roller which is at least partially disposed inside the inner diameter of the cylindrical portion of the suction roller and is opposed to the inner diameter surface of a portion of the cylindrical portion which is in contact with the film to be conveyed; And a partition member forming a second compartment facing an inner diameter surface of a portion of the cylindrical portion which is not in contact with the film to be conveyed; and a second member outside the cylindrical portion of the suction roller. And a suction duct that is arranged to face the compartment and sucks air coming out of the second compartment. The suction duct sucks air in the first compartment and supplies the air to the second compartment. Suction, characterized by supplying compressed air Conveyor using rollers. 3. The first compartment is formed between an inner surface of a portion of the cylindrical portion which is in contact with the film to be conveyed, and a nozzle is provided in the second compartment. The suction roller according to claim 1, wherein the partition member is configured to eject air from the nozzle to an inner diameter surface of a portion of the cylindrical portion that is not in contact with the film to be conveyed. Conveying device using. 4. A first compartment is formed between the cylindrical portion and an inner diameter surface of a portion of the cylindrical portion at a position where the cylindrical portion is in contact with the transported film, and a first compartment is formed between the cylindrical portion and the transported film. 3. The conveying device using a suction roller according to claim 1, wherein a second compartment is formed between the inner surface of the portion at the contact position and the second compartment. 5. The partition member includes a suction air discharge path for discharging air sucked from the first compartment and a compressed air supply path for supplying compressed air to the second compartment. The conveying device using a suction roller according to any one of claims 1 to 4, wherein the conveying device is provided in a member. 6. The partition member is formed of a substantially cylindrical member, the suction air discharge path is formed on a substantially central axis of the partition member, and the compressed air supply path is not substantially on a central axis of the partition member. 6. The method as claimed in claim 5, wherein the step is formed at a position.
A conveying device using the suction roller described in the above. 7. A suction roller having an annular groove formed on the outer diameter surface of a cylindrical portion so as to wind the outer diameter surface, and the suction hole being opened at the bottom of the groove. A transfer device using the suction roller according to claim 1.