JPS62290650A - Method and device for conveying sheet type object improving positioning accuracy - Google Patents

Abstract

PURPOSE:To improve positioning accuracy by engaging projecting and recessed part formed on each of a belt and a pulley with the part on the other to drive said belt, and sucking a sheet on top of said belt from the projecting and recessed part side of said belt in the captioned device of a photographic film, etc. CONSTITUTION:When pulleys 2 are rotated, the projecting and recessed part 4 of the pulley 2 is engaged with the projecting and recessed part 5 of a belt 3, to convey the belt 3. At this time, the projecting and recessed part 5 of the belt 3 is applied to both side parts of the rail of an air chamber 7 and the belt 3 is guided by the rail. And, a photographic film 11 placed on the belt 3 is conveyed while being adsorbed onto the belt 3 by means of the air chamber 7 the pressure of which is reduced by an unshown pressure reducing device. Thereby, the rail of the air chamber 7 is closely attached to the belt 3, shutting off the connection to fire due to the projecting and recessed part 5 of the belt 3, ensuring the close attachment of the photographic film 11 to the belt 3 as well as the conveyance and positioning.

Description

[Detailed Description of the Invention] 3. Detailed Description of the Invention (Field of Industrial Application) This invention relates to a conveying method and device that improves the positioning accuracy required for processing, printing, marking, etc. of sheet-like objects. be.

(Background of the Invention) As a sheet-like product, for example, there is a rectangular photographic film on which a photosensitive layer is formed, and in the processing process after the manufacturing process, corners are rounded and notches are formed to distinguish the front and back sides of the film. There's something to do.

In this processing step, the photographic film is held on the belt by vacuum suction, and the belt is driven by a pulley to continuously transport the photographic film.

(Problem to be Solved by the Invention 1) When photographic film is transported in this manner and the D0 process is performed continuously, it is necessary to accurately position the film at a predetermined position and perform cutting.

For this reason, if slippage occurs between the photographic film and the belt, it will affect the processing, so a relatively strong suction force is used to hold the photographic film on the belt to prevent slippage between the two. One idea is to prevent this from happening, but in this case, the load on the pulley that drives the heald will be higher. This causes slippage between the belt and the pulley.

Therefore, it is necessary to take care not only to prevent slippage between the photographic film and the belt, but also to prevent slippage between the belt and the pulley that drives the belt. In this case, a conceivable method is to roughen the contact surface of the pulley with the belt to increase frictional resistance, but the drive of the pulley may generate abrasion powder from the belt, which may adhere to photographic film or the like.

This invention was made in view of the above circumstances, and an object of the present invention is to provide a method and device for conveying sheet-like objects that improves the positioning and stacking efficiency without affecting the sheet-like objects that are being processed. There is.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a method for conveying a sheet-like article according to the first invention, which includes uneven portions formed on a belt;
The belt is driven by engaging the uneven portion formed on the pulley, the pressure is reduced from the uneven portion side of the belt, and the sheet-like object is conveyed while being held on the opposite side. The sheet-like material conveying device has an uneven portion formed on a pulley that drives the belt, an uneven portion that engages with the uneven portion of the pulley on the belt, and a sheet-like material under reduced pressure on the uneven portion side of the belt. The present invention is characterized in that it is equipped with means for holding conveyed objects.

(Function) In this invention, when the pulley is driven, the uneven portion of the pulley meshes with the uneven portion of the belt, thereby driving the belt, and the sheet-like material is held on this belt under reduced pressure. There is. In this way, when conveying a sheet-like object, slippage is prevented from occurring between the sheet-like object and the belt and between the belt and the pulley.

(Embodiments) Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the figure, shafts 1 are arranged at predetermined intervals, and several pulleys 2 are fixed to each shaft. A driving device (not shown) is connected to the end of one of the shafts 1, and the shaft 1 is rotated at a predetermined speed by this driving device.

A belt 3 is passed to each pulley 2, and the pulley 2
The uneven portions 4 formed on the belt 3 engage with the uneven portions 5 formed on the belt 3.

In this embodiment, the uneven portion 4 of the pulley 2 is composed of ribs extending in the axial direction. At approximately the center of the belt 3 on the side that contacts the pulley 2, through holes 6 are continuously formed at predetermined intervals in the longitudinal direction of the belt 3. Further, the uneven portions 5 of the belt 3 are formed as ribs extending in the width direction on both sides of this approximately central portion.

An air chamber 7 constituting conveyed object holding means is arranged between the conveyance objects 1Ik1, and the air chamber 7 is located between the inner sides of the belt 3 which is passed around the pulley 2. A pressure reducing pipe 8 is connected to the air chamber 7, and the inside of the air chamber is adjusted to a predetermined pressure by operation of a pressure reducing device (not shown).

Communication ports 9 are formed at predetermined intervals along the conveyance path of the belt 3 in the F section of the air channel huff, and protruding rails 10 are formed on both sides of the communication ports 9. The belt 3 is conveyed with its concavo-convex portion 5 in contact with the side of the rail 10 of the air chamber 7, and in contact with or not on the rail 10.

A rectangular photographic film 11 is attached to the belt 3J7.
The photographic film 11 is attracted to the belt 3 by the reduced pressure of the air chamber 7 and conveyed together with the heald 3.

Next, the operation of this embodiment will be explained.

When the Izuka 111!1 is rotated at a predetermined rotational speed by the operation of a drive device (not shown), the pulley 2 provided on this @1 rotates, and the uneven portion 4 of the pulley 2 is transferred to the uneven portion of the heald 3. 5, and the belt 3 is generally fed once.

At this time, the uneven portion 5 of the belt 3 is applied to both sides of the rail 10 of the air chamber 7, and the belt 3 is guided by this rail IO and electrically transmitted, thereby preventing meandering due to swinging of the belt 3 in the width direction. and transported smoothly.

When the belt 3 is ff1U, the photographic film 11 is placed on the belt 3 and the pressure inside the air chamber 7 is reduced by operating a pressure reducing device (not shown). Through the through hole 6, the pressure on the air chamber 7 side of the photographic film 11 is lowered, and the belt 3
is adsorbed to.

At this time, the rail 10 of the air chamber 7 and the belt 3 come into close contact, the communication with the atmosphere is cut off by the uneven portion 5 of the belt 3, and the photographic film 11 is reliably attracted to the belt 3. The occurrence of slippage is prevented.

In this way, when the photographic film 11 is attracted to the belt 3 and conveyed, the attraction force also acts on the belt 3, and the attraction force applies a load to the pulley 2. Since the belt 3 is conveyed while being engaged with the uneven portions 5 of the pulley 2 and the belt 3, slippage between the pulley 2 and the belt 3 is prevented.

Therefore, the occurrence of slippage between the photographic film 11 and the belt 3 and between the belt 3 and the pulley 2 is prevented. During processing such as forming a notch for identifying the front and back sides of the film 11, the photographic film 11 is accurately positioned at a predetermined position, and the crystal density can be processed.

FIG. 6 shows another embodiment, in which a concavo-convex portion 5 of the belt 3 is formed at the center with a predetermined width, and a through hole 6 is formed at the position of the concave-convex portion 5. The belt 3 is conveyed with its uneven portion 5 being guided between the rails 10 of the air chamber 7.

In the above embodiment, the rail 10 that protrudes into the air chamber 7 is formed, but a groove portion into which the uneven portion 5 of the belt 3 fits is formed in the air chamber 7 to guide the belt 3 and seal it to reduce pressure. It may be possible to do so effectively.

Further, although the uneven portion 4 of the pulley 2 is formed in the shape of a rib extending in the axial direction, the uneven portion may be formed into a boss shape, for example, and a hole that engages with the boss may be formed in the belt 3. In this case, the meshing of the boss and the hole can prevent the belt 3 from meandering and the air from entering the air chamber 7.
The process of forming the guide portion is omitted.

In general, the present invention is not limited to photographic film, but can be applied to conveying sheet-like objects such as plates, glass, or paper having a predetermined strength.

(Effects of the Invention) As described above, in the present invention, the driving force of the pulley engages with the uneven portion formed on the pulley or the uneven portion formed on the belt, and the belt is driven. Since the pressure is reduced from the side and the sheet-like object is held and conveyed, it prevents not only slippage between the sheet-like object and the belt, but also slippage between the belt and the pulley that drives this belt. can.

Therefore, when conveying a sheet-like object and processing it by positioning it at a predetermined (4q position), the processing reciprocity is further improved. The belt is formed roughly, so it can be carried out without increasing frictional resistance, and since the belt does not wear due to this contact and no abrasion powder is generated, there is no risk of it adhering to sheet-like objects such as photographic film.

[Brief explanation of drawings]

Fig. 7A1 is a schematic plan view of a sheet-like material conveying device to which the present invention is applied, Fig. 2 is a side view thereof, Fig. 3 is a perspective view of the belt, and Fig. 4 shows the engaged state of the belt and the air chamber. FIG. 5 is an enlarged plan view, FIG. 5 is a cross-sectional view taken along the line v--2 in FIG. 4, and FIG. 6 is a cross-sectional view of another embodiment showing a state in which the belt and the air chamber are engaged. 1... Shaft 2... Pulley 3... Belt 4.5... Uneven part 7... Air chamber 11... Photographic film

Claims (2)

[Claims] (1) The uneven portion formed on the belt and the uneven portion formed on the pulley are engaged, the belt is driven, pressure is reduced from the uneven portion side of the belt, and the sheet material is held on the opposite side of the uneven portion. A method for conveying a sheet-like object, the method comprising: conveying a sheet-like object. (2) A conveyed object in which a pulley that drives a belt is formed with a concave and convex portion, a concave and convex portion that engages with the concave and convex portion of the pulley is formed on the belt, and a sheet-like object is held by reduced pressure on the side of the concave and convex portion of the belt. A conveying device for a sheet-like object, characterized in that it is equipped with a holding means.