JPH01500422A - Unwinding prevention device and its method - 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] Unwinding prevention device and its method The present invention relates to a web (strip-like material) cartridge, and in particular, a wound web is tube, rewinding mechanism that can prevent it from rewinding inside the cartridge during transportation. This invention relates to a device and method for preventing damage.

Currently, there are various packages, or carts, used for webs such as photographic film and paper. Within the ridge, the web has flanges. Or a strip without a flange. The pool, namely the Koani, is wrapped around a light web to protect it from harmful factors in the pond. It is housed in a magazine that completely encloses the One end of the web is normal.

It is fixed to the core or spool, while the other end is attached to a slot formed in the magazine. It extends from the outside of the magazine. The other end is further fixed to the surface of the cartridge. The end of the cartridge is removed from the cartridge when loading it into a camera, etc. this The web in such cartridges may unwind during handling and transportation. It is known to rub. As mentioned above, one end of the web is the core, or spool. and the other end is usually fixed to the surface of the cartridge so that the web When unwinding, the web rotates the spool like a clock spring when released. let When the web unwinds in this way, the adjacent surfaces of the wound web This results in scratches and a deterioration in the quality of images recorded on the scratches. Also, the web expands outward. In order to cause unwinding in the direction of Pressed hard against the inner surface, making it difficult or impossible to unwind the web. Ta. Furthermore, if the other end of the web is not secured to the surface of the cartridge, the If the cartridge was secured in place, but accidentally separates from the surface of the cartridge. When the web unwinds, the other end of the web passes through the slot and into the cartridge. It gets drawn in and the cartridge becomes completely useless.

In the past, various devices have been used to prevent web unwinding within cartridges. was proposed. For example, Research Disclosure published in November 1977 No. 16352 describes a core locking device for webs that do not require a cassette. Are listed. In this core lock device, one of the webs wound around the core is A slot is formed in the end and a core lock is formed in one of the two end caps of the cassette. The lock member is provided so that it can be slid freely (but not loosely) and cannot be pulled out. US special No. 3,784,001 has a flange between the core and a part of the cartridge. A film cartridge is disclosed that includes a connector to prevent film from rewinding. There is. This connector is sufficient to prevent the core from rotating during shipping. However, when the film is pulled out of the cartridge, it may break and the core may break. Allow rotation. Also, US Pat. No. 4,210,296 describes the rotation of the spool. A ribbon cartridge is disclosed that is integrally provided with a device for preventing this. child The device for preventing rotation of the spool has an axially movable core inserter. The core inserter inserts the cartridge with a flexible bridge or arm. The core inserter is manually pushed into the open end of the core. When pushed in, frictional force prevents the core from rotating.

When the cartridge is assembled into the machine, the post provided on the Isoden will fit into the core insert. axially displaces the motor to release the frictional engagement and allow the supply spool to rotate freely. Make it possible to rotate. Still other prior art, U.S. Pat. No. 3,613,876 In some cases, spot welding occurs at one or more points between the surface of the core and the end of the hub. An anti-rewind device for an abutted film cartridge is disclosed. spot welding prevents rotation of the core during transport, while keeping the film securely in the cartridge. When pulled from the edge, the welds separate to allow the core to rotate. Ma Make multiple notches on the outer periphery of the core end and on the cartridge wall, each aligned with the other. At the same time, wrap a rubber band around the cartridge, and at the same time By damaging the notch, the web that has been wound once inside the cartridge is unwound. Conventional techniques for preventing this from occurring are also well known. In this way, cartridges have traditionally been Various devices have been proposed to prevent the web from unwinding in the web, but none of them have been successful to some extent. However, there is still a simpler, more reliable and more economical method available. There is a need to develop devices and methods for preventing backlash.

In order to achieve the above object, the present invention is directed to a rotatable core wound in a cartridge. During storage or transportation, the web may unwind inside the front deer In the unwinding prevention device that prevents the winding from happening.

and a notch formed on the core.

a sloft formed within the IJ edge and alignable with the notch;

having an end inserted through the aligned notch and slot; This locks the core against the edge, thereby preventing the wound web from unwinding. It is characterized in that it has a clip.

In addition, in the present invention, a wafer wound around a core rotatable within a car) prevents the cartridge from unwinding within the cartridge during storage or transportation. In a method for preventing unwinding.

forming a slot in the cartridge;

A notch is formed in the core so that it can be aligned with the slot.

After aligning the slot and the notch, insert the clip through the slot and notch. inserting the end of the cup, thereby locking the core against the cartridge. It is characterized by.

In the detailed description of the invention that follows, reference is made to the accompanying drawings.

FIG. 1 shows a cover having a device for preventing unwinding of a wound web according to an embodiment of the present invention. FIG.

Figure 2 is a partial view showing the central part of the end face of the cartridge shown in Figure 1 with a portion cut away. , FIG. 3 is a sectional view taken along line 3-3 in FIG. 2.

FIG. 4 is a partial sectional view similar to FIG. 3 of another embodiment of the locking element of the present invention.

FIG. 4A is a partial sectional view showing still another embodiment of the locking pin.

FIG. 5 is a second view of a device for preventing unwinding of a wound web according to another embodiment of the present invention. A partial diagram shown similarly to .

6 is a sectional view taken along the line 5-5 in FIG. 5. FIG.

1 to 3 show prevention of unwinding of a wound web according to an embodiment of the present invention. Disclosed within the cartridge is a device for stopping the cartridge. Cartridge 10 has a pair of 7 characters The cup members 12 are arranged along the rim 14.16. A substantially rectangular parallelepiped housing 18 is formed to house the web 20 which has been joined and wound once. has been completed. The walls 22 facing the housing 180 have substantially the same shape. In the following, only one wall portion 22 will be explained.

The wall 22 of the housing 18 has a circular opening for receiving the end of a cylindrical core 24. 23 is formed. Further, the wall portion 22 of the housing 18 has a structure as shown in FIG. A rib 26 that rotatably supports the core end 28 is formed on the inner peripheral surface of the opening 23. ing. A groove 30 is formed in the curved surface of the core end 28, and this groove 30 is connected to the rib 26. The core 24 is rotatably supported.

Furthermore, the wall 22 of the housing 18 has a ring 32 through which the core end 28 is inserted. It protrudes in the axial direction.

Cartridge:) Prevents the web 20 wound within the cartridge 10 from unwinding. The device includes a plurality of notches 34 and ribs 3 spaced around the end of the core 24. 6 is provided. On the other hand, the ring 32 has slots spaced at 180°. 38° 38 are formed, and these slots 38, 38 are respectively connected to a notch 34 and a half. Matches radially. Reference numeral 40 denotes a flexible lip in the form of a long piece, which can be attached to an appropriate prism. It is made of a rustic material, such as polycarbonite. this clip 40 is used to engage the core 24 with respect to the ring 32. That is, the notch 34 and the switch The slots 38 are aligned in the radial direction, and the aligned notches 34 and slots 38 are aligned. Insert one end of the clip 40 through.

The clip 40 is then bent so that the other end is diametrically opposed to the first end. and then, while restoring the clip 40, at the diametrically opposite E 11. The other end is inserted through radially matching notches 34 and slots 38. Chestnut When the clip 40 is in this locked position, it is located at the end of the clip as shown in FIG. The shoulder portion 42 of the ring 32 contacts the inner circumferential surface 44 of the ring 32, and the clip moves in the length direction to release the nozzle. Make sure that the ring 32 and core 24 are not pulled out from the edges and slots, and the ring 32 and core 24 are locked. to prevent it from being unraveled carelessly.

Another embodiment of the locking clip is shown in FIG. This clip 46 is L-shaped. one end of which is inserted through a radially coincident notch 34 and slot 38. while the other flexible end 48 is inserted into the core 24 and inserted into the core 24. It is secured to the circumferential surface by frictional force.

FIG. 4A shows yet another embodiment of the clip 40. One end is threaded through a radially matching notch 34 and slot 38. On the other hand, an elastic material 50 made of foam material or the like is provided at the other end. is secured to the inner peripheral surface of the core by frictional force.

Other embodiments of the cartridge and locking clip are shown in FIGS. 5 and 6. Ru. In this cartridge, each of the opposing walls 52, 52 has a central cup. The shaped recess 53 is substantially continuous with at least one of the formed walls. recess 53 has a cylindrical cup member 54 projecting in the axial direction, and this cup member 54 rotatably supports a protrusion 56 formed at one end of the core 58.

An annular groove 60 is formed at the core end, and this groove 60 is formed on the wall of the IJ edge. A ring 62 formed in the portion 52 is accommodated and lightly locked. Ring at the end of core 58 A plurality of notches 64 and grooves 66 are formed at intervals on the surface of the is provided. When locking the core 58 to the cartridge 51, first One end of the lip 68 is formed in the recess 53 of the cartridge wall 52 in the radial direction. into the slot 70 extending into the into the notch 64 of the door 58. Then, after bending the clip and shortening it, while restoring the other end diametrically to the slot 70 in the cartridge wall. It is inserted into the facing slot 70 and the notch 64 which coincides with the slot 70 in the radial direction. do. The ring 62 functions as a stopper and prevents the clip from being inadvertently released from the locked state. This will prevent you from being exposed.

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Claims (1)

[Claims] (1) Wound around a rotatable core (24) (58) in a cartridge (10) (51) The spun web (20) is wound within said cartridge during storage or transportation. In the unwinding prevention device for preventing unwinding, the core (10) (5) 8) Notches (34) (64) formed on the cartridge (10) (5) 1) a slot (38) formed in and alignable with said notch (34) (64); (70) and aligned said notches (34) (64) and slots (38) (70). and having an end inserted through the core to the cartridge (10) (51). (24) and (58) are locked, thereby unwinding the wound web (20). A winding characterized by having clips (40), (46), and (68) that prevent Anti-return device. (2) The clip is characterized by being made of a flexible long piece of plastic or the like. An unwinding prevention device according to claim 1. (3) the cartridge (10) has an axially extending ring (32); The ring (32) is formed with diametrically opposed slots (38). Furthermore, the end of the core (24) has the notch formed on the end surface of the core. The ring (34) is in radial alignment with the slot (38). 32). Prevention device. (4) said ring (32) has a set of diametrically opposed slots (38); is formed, and a set of diametrically opposed notches is formed on the end surface of the core (24). A clip (34) is formed, and the clip (40) is formed from a deformable long piece. one end of which has a matching set of said notches (34) and said slots (38). while the other end is inserted through an opposing aligned paper notch (34) and a strip. Winding according to claim 3, characterized in that it can be inserted into the slot (38). Anti-return device. (5) The deformable long piece (40) has the core (24) and the frame in each part. a shoulder (42) engageable with the flange (44), thereby allowing said clip end to The core ( 24) and said cartridge (10) from being accidentally released. 5. The unwinding prevention device according to claim 4, wherein: (6) The cartridge (10) is a cartridge in which the slot (70) is formed. The winding according to claim 1, characterized in that it has a cup-shaped recess (53). Anti-return device. (7) A pair of diametrically opposed slots (70) are formed in the recess (53). and a set of diametrically opposed notches on the end surface of the core (58). A clip (64) is formed, and the clip (68) is formed of a deformable elongated piece. , both ends of which can be inserted into matching notches (64) and slots (70), respectively. The unwinding prevention device according to claim 6, characterized in that: (8) The web wound around the rotatable core within the cartridge is stored or transported. A rewind prevention method that prevents rewinding within the cartridge during feeding. In the method, a slot is formed in the cartridge, and the cartridge is alignable with the slot; After forming a notch in the core and aligning the slot and the notch, Insert the end of the clip through the notch and the notch, thereby securing the cartridge. It is characterized by locking the core to the cage. (9) The core (24) (58) has diametrically opposed notches (34) (64). and the cartridge (10) (51) has a notch radially aligned with the notch. diametrically opposed slots (38) (70) are formed to further accommodate the clip (38) and (70). 40) The unwinding device according to claim 8, wherein (68) consists of a deformable long piece. In the prevention method, the notches (34) (64) are connected to the slots (38) (70). ) and the aligned notches (34) (64) and slots (38 ) (70), insert one end of the long piece into the set, bend the long piece, and bend the long piece. While loosening the deflection of the long piece, align the other end of the long piece with the other set on the opposite side. into the notches (34) (64) and slots (38) (70) that The core (24) (58) is locked to the cartridge (10) (51) by How to prevent unwinding. (10) Both ends of the deformable long piece include the core (24) and the cartridge. (10) are each formed with a shoulder (42) that engages with the When the deflection of the piece is released, the end of the long piece has a notch (34) and a slot (38). This prevents the core (24) and the cartridge from becoming unlatched by accident. 10. The method for preventing unwinding according to claim 9.