JPS58130851A - Winder for belt-like photograph material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a winding device for a strip of photographic material, in particular a light-shielding device which is rotatably mounted on the inlet side and equipped with a guide groove movable so as to touch the outer periphery of the winding core (bilaterally) on the outlet side. cassette (2) The winding device for the strip photographic material used is ≦2.

For example, in order to avoid waste of time and photographic material when fixing the starting end of a roll paper (photographic material) cassette, it was desired to provide a capture or loading mechanism inside the cassette. For example, from DE 24 45 998, a winding device of the type described in Section 2, in which the photographic material is guided between the stages of the core body, is known. The stepped portion C2 is provided with a friction layer, and when the core body rotates, the end of the photographic material ζ2 is carried away by the friction layer.In the above-mentioned type of device, the core body has a unique shape. Because (it costs too much, it's too much)
Controlling the guide grooves is complicated.

It is, therefore, an object of the present invention to provide a winding device for strip photographic material of the kind mentioned at the beginning, which has a simple structure, is reliable in drive, and is inexpensive to manufacture. .

According to the present invention, the photographic material guided to a normal winding core, for example, a paper cylinder, is wound around the winding core, and when the strip-shaped photographic material is turned around once on the winding core, the end of the photographic material is brought to the winding core. 2. Automatically (2) Rigid (2) held; no control member is required to move the guide groove.

When rewinding a photographic material ≦2 There is no crease at the "end" of the photographic material, that is, the starting edge of the photographic material when it is wound up. There is no drag at the last step.

Throughout the whole winding process, the photographic material is only slightly damped by the abutting flexible strip of the present invention, so that the rolled photographic material is strongly It's tightened.

Therefore, it is possible to omit a braking mechanism when winding up.

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

In FIG. 1, reference numeral 1 denotes a cassette for carrying a strip of photographic material, such as a roll paper such as photographic paper, and the cassette (2) is provided with an insertion opening 2. As shown in FIG. A pair of rollers 3 having a light shielding effect are provided behind the insertion opening. A guide groove 4 for the photographic material is arranged on the opposite side of the insertion opening of the pair of rollers 3, and the guide groove 4 is installed so that it can rotate once around a shaft 5. The shaft or axis 6ζ of the winding core 7 is arranged parallel to the two shafts.Furthermore, the shaft 5 is arranged in the vicinity of a pair of shafts 3 (near the guide groove 4).
The inlet side having a funnel-shaped expansion 4a is supported on two shafts 5ζ. A silver material 9 is fixed to the outer wall of the outlet side 8 of the guide groove 4, and has a length that extends at least around the winding core 7 and reaches the inner wall of the outlet side 8 of the guide groove 4. A magnet 10 is installed on the side surface of the end of the silver material 9, and the magnet attracts the metal winding frame 11 (two sides). Reel frame 1
1 is coupled so as to be rotatable in the winding direction.

In the rewinding direction C, the winding frame 11 is stopped against the cassette by the action of the second freewheel.

Further, as can be understood from FIG. 2, the winding frame 11 is formed with a flange 14, and the silver material 9 is supported at the flange 14 at the capture position (position at the beginning of winding). A similar flange 16 is preferably provided between the cassette cover 18 and the winding core (two annular grooves 15 are formed).
As a result, the chain member 9 is supported on both sides.

Inside the cassette case, other limiting members 1 are placed outside the winding frame 11.
B is installed, and the chain (]9 is C- ≦N above the edge of the winding frame so that it cannot jump out.

The operation of the winding device explained based on FIGS. 1 and 2 is as follows.

First of all, the winding core 7 is rotated clockwise (two times) together with the winding frame 11. In that case, the two-chain material 9 is attracted by the magnet 10 (two times, so that the winding core 7ζ2 is wound around the winding frame 11. The strip-shaped photographic material M is passed through the second person, a pair of rollers 3, and a guide groove 4.
is supplied to the cassette. As the silver material 9 is tightly wound around the core 7, the outlet side of the guide groove is directed in the direction of contact with the core 7 (that is, the tangential direction). Guided around my heart,
Winding core ≦ 2 are in close contact.

When the strip-shaped photographic material is wrapped around the core twice, the strip-shaped photographic material is firmly held on the core and can be continuously wound.

When the amount of winding increases, the silver material 9 moves outward, and in that case, the magnet 10 moves in a spiral (secondary direction). As a result, the photographic material that has been wound up is easily subjected to two brakes, thereby making it possible to wind it up tightly.

When rewinding the photographic material, the photographic material must be rolled up thickly (
In this case, the winding core 7 rotates counterclockwise (two revolutions) and the winding frame stops as described above (two cassettes ζ As a result, the silver material also remains at the outer circumferential position first.By simply moving the guide groove 4 toward the inside (two directions), the end of the silver material fixed to the guide groove is moved inside along with the guide groove. The magnetic end of the material is still held on the outer periphery of the reel, so that no drag is generated during the unwinding step since the silver material only rests on the rolled photographic material.

Of course, depending on the position of the cassette, the silver material may fall onto the wound photographic material due to gravity. In order to avoid the above, and to further improve the movement of the silver material 9 in general, it is also possible to provide a large number of magnets at intervals on the opposite sides of the silver material winding frame 116. These magnets allow the material to be separated from the rolled photographic material during unwinding.

3 and 4 show a second, simpler embodiment of the invention. For the same reason, the same parts as in FIGS. 1 and 2 are given the same reference numerals.

A steel band 17 is fixed to the outer wall C2 of the guide groove 4, and the length of the steel band 7 is approximately equal to the circumference of the winding core 7. As shown in Figure 4, the sleeve 1 is placed on the winding core 7.
8 is attached, and a Yuring-shaped magnet 19 is fitted therein. The width of the ring-shaped magnet 19 is equal to that of the sleeve 18.
The rubber ring 20 is further fitted into the sleeve 18≦2 on both sides of the ring-shaped magnet.

To explain the operation, first, when the core 7 is rotated clockwise (twice), the steel band 17 is attracted by the ring-shaped magnet 19 and wound around the core 7. Therefore, the inserted strip-shaped photographic material M is made of steel. The steel band 17 reaches the distance between the band 17 and the winding core 7, and after wrapping around the regenerating core 7C2, it is fixed.When the photographic material has been wound 61 times, the steel band 17 reaches the position shown in Figure 3. (At 2, it occupies the position drawn by the dotted line. When unwinding, the steel band falls again naturally towards the core, depending on the position of the cassette ≦2, or again by the guide groove 4, which moves onto the core.) As soon as the photographic material is completely removed from the cassette, a magnetic force acts between the ring-shaped magnet 19 and the steel band 17, fixing the steel band 17 to the winding core 7.

Of course, instead of a steel band, it is also possible to use a band of any other ferromagnetic metal. It is also conceivable to use a flexible band, and in the case of 7, it is sufficient to simply place a ferromagnetic layer on the band. It is also possible to provide the flexible band 17 with a magnet and to place a steel ring or a ferromagnetic metal ring on the sleeve 18.

In FIGS. 5 and 6≦2 a third embodiment of the invention is illustrated, in which case similar parts (2 are given the same reference numerals). A flexible band 21 made of any material is provided, and the flexible band is fixed to the outer wall of the guide groove.
The band rotates around the winding core 1, passes around the rollers 22 installed facing each other at the position C2 where the band is fixed at the exit side of the guide groove 4, passes outside the guide groove, and then enters the insertion opening. After passing through a roller 23 installed nearby,
It extends to a winding device 24 to which the other end of the lead is fixed. This winding device has, for example, a mainspring, which causes the band 21)'E counterclockwise direction (2 windings, and when the winding of the core becomes large, the biasing force of the spring 21)
- against clockwise 4 - unwinding, thereby causing band 2
1 to increase the adhesion of the photographic material to the core.

In this embodiment, the strip-shaped photographic material M is fed through the guide groove 4 between the band 21 and the winding core 7. The friction between the first and second positions of the photographic material Coefficient ``e A
When a'' is sufficiently effective≦Y, that is, when it has been wound approximately once, the capturing step is completed and the cloth-like photographic material M is held firmly on the winding core 7. While winding is being carried out, the band 21 is unwound. 6, the diameter of the ring of the band becomes larger. The biasing force of the spring in the winding device 24 (2) The band 21 therefore always remains close to the photographic material during the winding process. (2) Close contact and apply a brake to the rolled photographic material.

Once winding is complete, unwinding is performed in the opposite manner. However, there may be cases where it is necessary to take out the photographic material, which is often wrapped around C2. In the case of the first two embodiments, there is no problem because the silver material or steel band is simply moved aside, but in this embodiment, both sides of the band E are fixed, so in this case, the guide groove 4 is One end of the band which is fixed to the outer wall≦2 is removably attached to the guide groove C2 (preferably the two are connected together).

This means, for example, that a catch 2 is attached to the outlet side 8 of the guide groove 4.
5, and its clasp (2) can be hung by the roller 26, which is tightly connected to the band 21. When taking out the photographic material that has been wound together (
- It is sufficient to simply remove this roller from the single≦- clasp 25.

A fourth embodiment of the present invention is shown in FIG. 7, and C2 of the same drawing shows an enlarged view of only the catching device around the core. Outer wall of guide groove 4 [Outer wall of J side 8≦A silver material 27 consisting of two arc-shaped segment plates 27a to 27e is fixed. The segment plates 27a to 27e are the winding core 7
The circumference≦2 has approximately equal curvature, and the link 28i-
Therefore, they are connected to each other. The links 28 rotate the segment plates 27a-27e away from the winding core 7, but prevent two adjacently arranged segment plates from being rotated inward beyond their radius of curvature. Accordingly, a ring-shaped groove is formed around the core.

Spring member 29 at the link 28. Preferably a bent spring is provided, the spring member 29 of which presses the individual segment plates 27a-27e to narrow the distance between the cores 7.

A pressing roller 31 is arranged at the outer end C2 of the last segment plate 27e, and the pressing roller 31 is brought into close contact with the winding core 7.

The inserted strip of photographic material M is first guided through the annular groove 30 and, after wrapping approximately once, passes under the suppression roller 31. Due to the extrusion action C2 between the winding core 1 and the suppression roller 31, the photographic material is further wound ≦2 times, and after a frictional effect is obtained as in the case described above, the photographic material is firmly attached to the winding core 7 (
- Retained. When the amount of winding increases, the guide groove 4 is pushed upward, and the silver material 21 spreads against the urging force of the spring member 29. In this case, the silver material is wound up via the pressure roller 31. Above the material ≦2.

In FIG. 8, reference numeral 41 indicates the shaft of the photographic material winding cassette, and only a portion of the side wall is shown in the figure. axis 4
A cylinder 43 is attached on top of the cylinder 4
4 is detachably attached. The shaft 41 is driven by a known method to perform winding.

For example, a guide groove 45 is provided so as to be in contact with the paper 44. Although not shown in the drawings, the guide groove 45 is arranged around the cassette insertion opening (6 units can be rotated once) by a known method, and gradually becomes larger. The winding diameter (2 continuous 62 can be followed).

The outside of the guide groove 45 (two sides (two solid supports 4)
7 is installed, and its support (2) is fixed with a spring plate 48. The spring plate 48 is fairly thin, preferably about 0.
．． It has a thickness of 3m1m. The length of this spring plate 48 is designed so that it wraps around about 85% of the paper 44.

Regarding the spring plate 48≦2, the spring plate 48 is on the side opposite to the one for paper.
the second spring plate 4 at the position ζ2 where the paper 44 contacts the paper 44 in the tangential direction;
9 is installed, the second spring plate 49 of which is thicker than the first spring plate, the thickness of which is preferably Q, 5 m. However, the second spring plate 49 only wraps around 50% for paper.

The method of operating the winding device shown in FIG. 8 will be described below.

The photographic material 4b is guided from the insertion opening of the cassette into the cassette through the guide groove to the paper 44, and the surface of the paper 44 captures the paper because its surface has a large friction value compared to paper≦2.

In that case, this surface can be a layer of rubber, or it can just be provided with two mono-bi rubber rings. For paper 4
The photographic material 46 is guided to the paper 44 by a thin spring plate 48 having 4≦2 turns. If the first spring leaf 48 captures the photographic material 46 ≦2, additional stiffness is provided by the second spring leaf 49 . The spring leaves 48 and 49 become more coiled (-and therefore warp), but the second spring leaf resists the stretching and deformation of the first spring leaf.

When unwinding (second) the photographic material is pulled out from the cassette through the guide groove 45 that has moved according to the amount of winding. In this case, the wound photographic material rotates counterclockwise and Since the spring plate 48 is wrapped lightly around the photographic material, it hardly acts as a brake against rotation.

In the embodiment shown in FIG. 8, a first spring plate and a second spring plate thicker than the first spring plate are provided, and the first spring plate can securely capture (2) the photographic material, and the core of the photographic material can be If the first spring plate becomes larger, deformation and sagging of the first spring plate can be prevented, and reliable winding can be achieved.

The present invention (2 such winding device is a cassette) has been described in connection with 2, but the present invention is not limited to the winding device (2) installed inside the cassette (2), but the winding device (2) directly installed inside the cassette (2). It should be mentioned that all kinds of winding devices≦2 are also applicable.

[Brief explanation of drawings]

FIG. 1 is a schematic sectional view of a cassette showing a first embodiment of the device according to the present invention, FIG. 2 is a sectional view taken along line ■-n C2 in FIG. 2. A schematic sectional view of a cassette showing a second embodiment of the device, FIG. 4 is IV of FIG.
5 is a schematic sectional view of a cassette showing a third embodiment of the device according to the invention; FIG.
The figure is a cross-sectional view of the photographic material wound up by the device according to the embodiment shown in FIG. Enlarged cross-sectional view,
2.3...Roller 4...Guide groove 7.
... Core 9 ... Fittings 15 ... Ring groove 17 ... Steel band 18 ... Sleeve
19...Ring magnet 20...Rubber ring
25... Clasp 27a-27e... Segment plate 27... Attachment 28... Link 29
... Spring member 31 ... Suppression roller 44 ...
・Paper 45...Guide 47...Support 48.49...Spring plate Applicant Agfergewelt・Figure 3Figure 4Figure 10 17 lU Figure 5Figure 6Figure 7Figure 1 Continued page Priority claim @ October 27, 1978 ■West Germany (
DE)■P 2846952.5 @ Inventor Ernst Issmann Federal Republic of Germany 8000 Germany Distributed by Auerspitzschütstrasse 27 0 Inventor Siegfried Partil Federal Republic of Germany 8035 Gauteink Zubeartrasstrasse 51 Ah! ' Inventor: Ernst Biedermann, Federal Republic of Germany, 8011, Taufkirchen Edelweissstrasse 6

Claims (4)

[Claims] (1) Rotatably mounted on the entrance side seam,
In a winding device C for a strip-shaped photographic material used for a light-shielding cassette with a movable guide groove, a flexible strip member (9, 1?,
21.27) is provided, and the band-like member is provided with a guide groove (
4), and the flexible band member is connected to the outlet side (8) end of the winding core (7) C and the loosely wound band (21
), and the free end of the band is connected to a winding device (24) which is located outside the winding space and applies a corresponding adhesion force to the photographic material as the diameter of the core increases. A winding device for a strip-shaped photographic material, characterized in that the members come into close contact along the length of the wound photographic material when the winding on the core (1) increases. (2) The band (21) is on the exit side (8) of the guide groove (4)
Claim 1, characterized in that the winding device (24)-\ extends via a roller (22) located opposite the fixed end (26) of the band. Winding device for strip photographic material. (3) A winding device for a strip-shaped photographic material according to claim 1 or 2, wherein the winding device (24) has a mainspring. (4) Any one of claims 1 to 3, characterized in that the end (26) of the band (21) is removably fixed to the end (-) of the guide groove. A winding device for a strip-shaped photographic material as described in 2.