JPH0524739A - Negative sheet folding device - Google Patents

Abstract

PURPOSE:To provide a negative sheet folding device capable of folding a negative sheet in which a negative film is inserted in several steps without damaging the negative film. CONSTITUTION:A negative sheet 12 of one order unit is wound up on a winding drum 34 while guiding the tip end part of a negative sheet 12, which is conveyed by a conveyer roller 28, by guide plates 32, 90, 92, 88, 86 arranged on the outer circumferential surface of the winding drum 34. This winding drum 34 is composed of two rotary bodys capable to be connected to/disconnected from each other freely in the axle direction of a shaft 40. Here, the winding drum 34 is retreated in the axle direction after winding up the negative sheet 12 of one order unit. Thereby, the negative sheet 12 rolled in a whirlpool status is formed. This negative sheet 12 is pressed and fixed by a pressing and fixing roller 114 and an auxiliary rollers 138, 140 arranged above/below the taking-up drum 34 so as to be creased. This folded negative sheet is conveyed toward the conveyer roller 158 by the pressing and fixing roller 114 and the folding process is finished.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a negative sheet folding device for automatically folding a negative sheet having a piece negative film inserted therein.

[0002]

2. Description of the Related Art At present, photographic prints are generally printed and developed by an automatic photographic printing apparatus in a photo lab.

This automatic photographic printing apparatus cuts a negative film having undergone the printing process into a predetermined size (usually 6 frames long) and inserts it into a negative sheet. The "one-order unit" means a unit of film to be inserted in one cartridge.) The cut negative sheet is folded by a worker into a size that fits in the print bag, inserted into the print bag together with the photographic print, and returned to the customer.

As described above, the conventional automatic photographic printing apparatus is
A mechanism for inserting a negative film into a negative sheet and cutting the negative sheet in units of one order is provided, but folding of the negative sheet had to rely on the hands of workers.

Therefore, an apparatus for mechanically folding a negative sheet has been developed in order to save labor in the developing process. However, the current folding device is limited to folding in two stages, and the negative sheet cannot be folded over several stages without damaging the negative film inserted in the negative sheet. Further, after the negative sheet is folded, there is also a problem that the folded negative sheet returns to its original state or rises depending on the waist strength of the negative sheet.

[0006]

In consideration of the above facts, the present invention is capable of quickly folding a negative sheet in several stages without damaging the negative film in order to save labor in a developing station. The purpose is to provide a device.

[0007]

A negative sheet folding apparatus according to the present invention is a negative sheet folding apparatus that folds a negative sheet having a piece negative film inserted therein. And a pressure roller that presses the negative sheet rolled out in a spiral shape and conveys it toward the tray of the negative sheet.

[0008]

According to the negative sheet folding device having the above-mentioned structure, the negative sheet cut by the unit of the piece negative film and cut into the order of 1 order is wound up on the winding drum at a high speed. When the take-up drum winds a predetermined amount of the negative sheet, the take-up drum axially slips out from the negative sheet rolled into a spiral shape on the outer peripheral surface of the take-up drum. Next, the pressure roller presses the spirally rolled negative sheet from above and below to fold the negative sheet. The folded negative sheet is carried out on the tray by the pressure roller.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 2, a negative sheet folding apparatus 10 according to the present invention has a piece negative inserted therein, and a long negative sheet 12 having perforations formed in units of one order is wound up. A supply roll 14 is attached.

The negative sheet supply roll 14 is mounted in the magazine 16 for easy attachment and detachment. The negative sheet 12 unwound from the negative sheet supply roll 14 is
It is guided by a pair of upper and lower guide plates 18 and conveyed rightward. On the right side of the guide plate 18, a transport roller 20 which is driven or stopped by a pulse motor connected to a control device (not shown) is arranged.

A perforation detection sensor 23 for detecting the tip of the negative sheet 12 and perforations is arranged on the right side of the transport roller 20. This perforation detection sensor 1
3 is connected to a control device (not shown).

A tension roller 22 is arranged between the transport roller 20 and the negative sheet supply roll 14. The tension roller 22 is rotatably supported in an arc-shaped long hole 24, and applies a constant tension to the negative sheet 12 by its own weight to remove the slack of the negative sheet 12.

On the right side of the transport roller 20, a pair of guide plates 26 are provided in the vertical direction. This guide plate 2
A conveyance roller 28 is arranged on the right side of 6, and is driven by a driving means connected to a control device (not shown). The leading end portion of the negative sheet 12 nipped and conveyed to the downstream side by the conveyance roller 28 has the guide plate 3
0, and the downstream side tip is guided downward by the guide plate 32 that curves downward,
It is designed to be wound up in 4. This winding drum 3
The circumferential length of 4 is, for example, the number of steps of the negative sheet 12 is about 4
It has a length that allows it to be wound up in steps.

As shown in FIG. 1, the winding drum 34
Is composed of two rotating bodies 34A and 34B arranged at both ends of the negative sheet 12 in the width direction. As shown in FIG. 4, the rotating bodies 34A and 34B are mounted on the shaft 4
It is rotatably supported at 0. The shaft 40 is provided with a projection 37 extending in the axial direction. The protrusion 37 is fitted into a plurality of connecting holes 53 provided in the shaft holes 39 of the rotating bodies 34A and 34B along the axial direction (see FIG. 4). As a result, the driving force of the shaft 40 is transmitted to the rotating bodies 34A and 34B, and
A and 34B are slidable in the axial direction of the shaft 40.

A gear 46 is provided at the end of the shaft 40.
Is fixed. The shaft portion of the gear 46 is rotatably supported by the side plate 42 via a bearing 44. As shown in FIG. 1, this gear 46 includes a belt 41,
The driving force of the pulse motor 48 is transmitted via 43 and the gears 45 and 47.

Outside the rotating bodies 34A and 34B,
A slide bearing 54 is attached. This slide bearing 5
4 is axially supported by a shaft 40 and is movable in the axial direction. Collars 56 and 58 are provided on both sides of the slide bearing 54, and an annular groove 60 is formed between them. A roller 62 is attached to the annular groove 60 such that the outer peripheral portion of the annular groove 60 contacts the wall surfaces of the collars 56 and 58. The roller 62 is pivotally supported by a pin 64 at one end of a moving lever 66. The other end of the moving lever 66 has a shaft gear 6
It is fixed to a shaft 70 of 8. Shaft 7 of this gear 68 with shaft
The other end of 0 is pivotally supported by a support plate (not shown). As shown in FIG. 1, a gear 72 meshing with the gear 68 with a shaft is disposed below the gear 68 with a shaft, and the gear 72 is fixed to a rotating shaft of a motor 74. As a result, by rotating the motor 74 in the normal direction or in the reverse direction, the moving lever 66 is driven in the axial direction of the shaft 40, and the slide bearing 54 can be moved in the axial direction of the shaft 40.

As shown in FIG. 4, one end of the collar 58 of the slide bearing 54 is fixed to a bearing 78 provided in the openings 76 of the rotating bodies 34A and 34B and is rotatable with respect to the shaft 40. There is. As a result, the rotating body 34
A and 34B are integrated with the slide bearing 54,
The moving lever 66 can move in the axial direction of the shaft 40.

As shown in FIG. 2, plate-shaped guide plates 86, 88, 90 for guiding the negative sheet 12 to the outer peripheral surface of the winding drum 34 are arranged on the left and right sides of the winding drum 34. As shown in FIG. 1, the guide plates 86, 88,
90 is cut out in a rectangular shape from the center to the lower side so as not to hinder the movement of auxiliary rollers 138 and 140 described later.

As shown in FIG. 2, the substantially central portion of the guide plate 86 is supported by the rod 94. A bracket 96 is provided at the end of the guide plate 86 opposite to the contact surface with the winding drum 34. The bracket 96 is connected to one end of the lever 100 by a pin 98. A pin 102 is attached to the other end of the lever 100 and is pivotally supported by the long hole 104.

Below the pin 102 attached to the lever 100, a fixed pin 1 fixed to the outer peripheral portion of the disk 104 is provided.
06 is attached. The disk 104 is fixed to a rotary shaft 108 of a motor (not shown). As a result, when the lever 100 moves to the left, the guide plate 86 comes into contact with and separates from the outer peripheral surface of the winding drum 34 while sliding the rod 94.

The guide plates 88 and 90 are also the guide plates 86.
Similarly, the one end is connected to the lever 110, and the disk 10
The rotation of 4 causes the winding drum 34 to come into contact with and separate from the outer peripheral surface of the winding drum 34. Further, as shown in FIG. 1, curved guide plates 92 for guiding the negative sheet 12 at the lower portion are provided on both lower end portions of the winding drum 34 at both ends of the winding drum 34, respectively.

As shown in FIG. 2, a pressure roller 114 pivotally supported by a lever 112 is arranged in the vertical direction of the winding drum 34. The lever 112 is pivotally supported on a side plate (not shown) by a pin 116 provided at the lower end of the lever 112. Pulleys 118 and 120 are arranged above and below the pin 116. As shown in FIG. 1, a belt 126 wound around a pulley 124 fixed to a rotation shaft of a motor 122 is wound around the pulleys 118 and 120. As a result, the pair of upper and lower pressure rollers 114 can be brought into contact with and separated from each other by rotating the motor 122 in the normal direction or in the reverse direction. As shown in FIG. 1, the pressure-bonding roller 114 has a pulley 128 on the shaft of the pressure-bonding roller 114.
Is fixed. A belt 130 wound around a pulley 134 fixed to a rotation shaft of a motor 136 is wound around the pulley 128. As a result, the pressure roller 114 is driven by the motor 136 while the negative sheet 12 is pressure-bonded to the negative sheet 1.
2 is conveyed downstream.

Further, as shown in FIG. 2, auxiliary rollers 138 and 140 are provided on the left and right sides of the winding drum 34 to assist the pressure roller 114. The auxiliary roller 138 is pivotally supported by a pin 142 at one end of the lever 144. This lever 144 has a pin 1 at a substantially central portion.
A shaft 46 is rotatably supported by a side plate (not shown). The pin 148 provided below the lever 144 is
It is fixed to the outer peripheral portion of the disk 150. This disk 150
Is fixed to a rotating shaft 152 of a motor (not shown). Similarly, the auxiliary roller 140 is also driven by the lever 154. As a result, the auxiliary rollers 138 and 140 are driven by the levers 144 and 150, and as shown in FIG. 3, press the front and rear ends of the negative sheet 12 in the carry-out direction.

Also, the auxiliary rollers 138 and 140 on the right side
A guide plate 156 is arranged on the downstream side, and a carry-out roller 158 is arranged on the further downstream side. The carry-out roller 158 is driven by a driving unit (not shown) and carries out the folded negative sheet 12 conveyed from the pressure roller 114 onto the tray 160 (FIG. 3).
reference).

Next, the operation of the negative sheet folding apparatus according to the present invention will be described with reference to FIGS.

As shown in FIG. 2, the negative sheet 12 unwound from the negative sheet supply roll 14 is given a constant tension by the tension roller 22, and the negative roller 12 is conveyed by the conveying roller 20.
It is nipped and transported by the transport roller 28, and further transported by the transport roller 28 toward the winding drum 34. Here, when the perforation detection sensor 23 detects the leading end of the negative sheet 12, the count value of the number of pulses of a pulse motor (not shown) that drives the transport roller 20 is stored. Next, when the perforation detection sensor 23 detects a perforation, based on the difference between the count value of the number of pulses at this time and the stored count value, the negative sheet 12 of one order is
Judge the length of and store. At this time, the transport roller 2
Stop driving 0. In this state, the transport roller 28
Drive continues, a certain tension acts on the perforations, and the negative sheet 12 is cut from the perforations in units of one order.

The take-up drum 3 is moved by the transport roller 28.
The leading end of the negative sheet 12 conveyed in four directions is guided downward by the guide plate 32 and moves to the outer peripheral surface of the winding drum 34. On the outer peripheral surface of the winding drum 34, a guide plate 90, a curved guide plate 92, a guide plate 88, and a guide plate 86 are arranged in the transport direction. The negative sheet 12 is guided by these guide plates and is wound around the winding drum 34 at high speed.

At this time, as shown in FIG. 5, the moving lever 66 is moved by the motor 74 in a direction in which the moving lever 66 approaches each other around the shaft 70, and the tip end surfaces of the rotating bodies 34A and 34B constituting the winding drum 34 are moved. , Rotate at regular intervals. The take-up drum 34 is based on the length of the negative sheet 12 of one order stored in the control device.
The 1-order negative sheet 12 is rotated until it is completely wound up, and then stopped.

In this embodiment, as an example, when the negative sheet 12 has seven stages, as shown in FIG. 6A, the leading end is on the left side of the winding drum 34 and the rear end is on the winding drum. It is located below 34.

Next, when the drive of the winding drum 34 is stopped, the motor 74 is rotated in the reverse direction, and the moving levers 66 are moved in the directions away from each other. As a result, as shown in FIG. 4, the rotating bodies 34A and 34B move in the directions away from each other while being guided by the shaft 40. As a result, the winding drum 34 is extracted from the negative sheet 12 that is rolled into a spiral shape. At the same time, as shown in FIG. 3, the lever 100 moves to the left and the lever 110 moves to the right, and the guide plates 86, 88, 90 retract downward. At this time, the lever 112 is driven to move the pressure bonding rollers 114 in a direction in which they approach each other, and the negative sheet 12 rolled into a spiral shape is pressure bonded. The levers 144 and 154 are also driven to drive the auxiliary rollers 138 and 14
By 0, the front and rear end portions of the negative sheet 12 in the carry-out direction are crimped.

As shown in FIG. 6 (B), since the negative sheet 12 forcibly formed with the folds is folded so as to make a spiral, the folded portion does not rise and is printed. Easy to insert into the bag.

Next, as shown in FIG. 3, the negative sheet 12 crimped and folded is conveyed by the pressure roller 114 in the direction of the carry-out roller 158. Here, it is carried out to the tray 160 while being further pressed by the carrying roller 158.

[0033]

As described above, in the negative sheet folding device according to the present invention, the negative sheet is temporarily wound by the winding drum, the winding drum is taken out in a state where the negative sheet is rolled into a spiral shape, and the negative sheet is pressed by the pressure roller. Since it is forcibly crimped to make a crease, the crease does not rise and the negative sheet can be folded at high speed over several steps.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a negative sheet folding device according to the present invention.

FIG. 2 is a side view showing an operating state before the negative sheet is pressure-bonded in the negative sheet folding device according to the present invention.

FIG. 3 is a side view showing an operating state after the negative sheet is pressure-bonded in the negative sheet folding apparatus according to the present invention.

FIG. 4 is a side view showing a state in which the winding drum of the negative sheet folding device according to the present invention is retracted.

FIG. 5 is a side view showing a state in which the winding drum of the negative sheet folding device according to the present invention winds up the negative sheet.

FIG. 6 is a schematic view showing a state in which a negative sheet is wound by a winding drum of a negative sheet folding device according to the present invention and pressure-bonded by a pressure roller.

[Explanation of symbols]

 34 Winding drum 114 Crimping roller

Claims (1)

Claim: What is claimed is: 1. A negative sheet folding device for folding a negative sheet having a piece negative film inserted therein, wherein a winding drum for winding a predetermined amount of the negative sheet onto the outer peripheral surface and then pulling it out in the axial direction, A negative sheet folding device, comprising: a pressure roller that presses out the negative sheet rolled out in a spiral shape from the winding drum and conveys the negative sheet toward a tray of the negative sheet.