JPH0282239A - Process and device for structure of film-cartridge - Google Patents

Abstract

PURPOSE: To make the production of a film cartridge simpler and more inexpensive by continuously applying a hermetically sealing material to a thin piece of material along at least one of edges forming a film aperture before the thin piece of the material is separated into individual plates. CONSTITUTION: In the process for producing the film cartridge by a series of automatized stages, the thin piece of the material 1 separated from the flat thin piece of the material in order to form a cartridge wall includes some plates 47 for the cartridge, and has width corresponding to the circumference of the formed cartridge wall. The hermetically sealing material is supplied to the thin piece 1 as continuous hermetically sealing thin pieces 27 and 28 in the carrying path of an attaching mechanism 23 in the case the thin piece is continuously covered with the hermetically sealing material along at least one edge of the film aperture 49 before it is separated. Thus, the production is simpler and more inexpensive.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a process for the manufacture of a film cartridge having a substantially cylindrical cartridge wall, the film opening extending along the production line of the cylinder wall. ,
and capped at the ends. The plates of material are each designed to form the walls of one cartridge;
The flat strips are separated from the material before being formed. Each strip is large enough for several cartridge walls;
and its width is equal to the circumference of the wall. Before the strip of material is separated into individual plates, a sealing material is applied successively to the strip along at least one of the edges forming the film opening.

The invention also relates to an apparatus for carrying out the process.

PRIOR ART AND THE PROBLEMS TO BE SOLVED BY THE INVENTION The production of film cartridges by a process of the type described above consists of:
Already disclosed in DE-AI-3118210. In the process disclosed in that document, the sealing material is composed of individual fibers applied by flocking along the edges of a strip of material. It is not possible to apply the sealing material so that it protrudes slightly beyond the green forming the film opening of the cartridge, as is often desired for light exclusion purposes. For this reason, it is necessary to use a cap that also covers the opening of the cartridge. The production of these caps is more expensive than the production of axially symmetrical caps and requires special means for assembly.

It is also known to use sealing strips of synthetic material, cut from a continuous feed tape in pieces equal to the length of the film opening and glued to the film opening of the cartridge. This is a labor intensive and time consuming process and does not always result in the sealing strip being accurately adhered to the film opening.

Means for solving the problem: To this end, the film aperture is fitted with a sealing strip of the correct size.
It is an object of the present invention to provide a process that is accurate and aligned in the correct position, and that is simple and inexpensive to implement.

The invention solves this problem by the features of claim 1. Other features of the invention will become apparent from the claims.

The invention allows the production of film cartridges by a highly automated series of steps. The process according to the invention ensures -like high quality production despite the increased output.

The production of cartridges by the process according to the invention also
Very cheap.

Exemplary embodiments of the invention are described below with reference to the accompanying drawings.

EXAMPLE In the example described below, a relatively large sheet metal is used as the starting material for producing the walls of the cartridge. These metal sheets are covered with a number of fields arranged in several rows and columns, the area of each field corresponding to the area of the cartridge wall before being bent. Each field is rough coated and holds a print according to the desired appearance of the cartridge being formed, including details identifying the film, manufacturer, and other information. The field also contains the Dx system code.

The sheet metal is cut into individual strips of material marked by the reference number l in FIG. 1, each strip containing a row of fields.

Each of the material strips l contains several identical fields 2 placed side by side, each field containing the amount of material required for one cartridge wall. The material strips l cut from sheet metal are arranged as a stack 3 in a magazine 4, in which case they are stored for subsequent processing.

The material strips l are then removed one by one from the stack 3 and placed sequentially along the conveyor path.
Move the various processing mechanisms in Figure 4.

After the entire magazine 4 has been placed at the beginning of the processing mechanism (FIG. 1), the top material strip l of the stack 3 in the magazine 4
is removed from the stack 3 by a known suction device (not shown) and shifted sideways in the direction of the arrow 56, 57 in order to be lowered onto the guide rail 5, in which case it is moved onto a known conveyor. In the means, it is carried step by step in the direction of the arrow 6 and transferred to the punch mechanism 7 adjacent to the guide rail 5, which is shown in detail in FIG.

The punch mechanism 7 includes a fixed matrix block 8,
a ram retainer 9 in the form of a plate;
is displaced by drive means (not shown) in the direction of the double arrow lO, so that it is lowered into the matrix block 8 to carry out the punching stroke and returned at the end of the stroke. The ram retainer 9 has two punches 11, 12 whose cutting edges are
It is T-shaped or anvil-shaped and corresponds to the shape of matrices 13, 14 in matrix block 8. When the ram retainer 9 performs a punching stroke, the punches 11,
12 moves into the recess of the matrix 13.14 and cuts the notches 15 along the two edges of the material strip l when the strip is inserted into the punch mechanism 7 between the matrix block 8 and the ram retainer 9. Cut out .16, but with these notches 15
, 16 are connected to the cartridge at the end of the cartridge.
Required for subsequent attachment of the cap. During this punching operation, the material strip l is placed on the matrix block 8, but for the sake of clarity, the support 5 and the matrix
The block 8 is on one side and the support and the material strips l on the surface of the block are shown in an exploded view in FIG. 2, so that they appear to be some distance apart. .

Before each punch stroke, the material strip 1 is positioned in the punch mechanism so that a notch 15.16 for the cap is formed.
is formed exactly between two adjacent fields 2, ie between two adjacent sections of the plate on which the cartridge wall is formed. When adjacent plate sections are separated along the line of symmetry of the cap notches, these notches form part of the peripheral contour of the plate section.

The material strip l is moved forward by one field 2 in the direction of the arrow 6.17 during two successive punching strokes of the holder 19 by means of a conveyor device (not shown).

In addition to the ram 11% 12 used as a punching tool, the ram retainer 9 is also smaller than the ram retainer 9 than the ram 11.12.
It holds two identical pairs of adjustment bins 18, 19 which are longer in the direction of downward movement of and taper downwards. In the line of movement of the pair of adjustment pins 18.19, the matrix block 8 has an additional matrix recess 20.21 that is identical to the recess 13.14 of the ram 11.12. The distance of the bins 18, 19 from each other and from the adjacent rams 11, 12 is always equal to the width of the field, so that when the ram holder 9 is lowered to perform the punching stroke, the bins 18, 19
．． 19 wedge-shaped edges were produced in the previous punching stroke;
and passes through the notch 15.16, which is moved forward into the position of the bin 18.19 by the forward feeding of the material strip l. As a result, the material strip l is accurately positioned for the next punching stroke, and the new cap notch produced has the same distance as the notch produced in the previous punching stroke. If the amount by which the material strip l is moved forward between two punch strokes is deflected slightly more than the prescribed length, the adjustment pin 18 moves with the wedge-shaped edge into the notch formed in the previous stroke. 19, when the ram holder 9 is lowered, before the rams 11, 12 reach the upper surface of the material strip l;
Ensures that the material strip l is accurately positioned in the correct registration position. Inaccuracies in the stepwise forward movement of the material strip are thereby corrected.

The material strip l is transferred from the punch mechanism 7 (FIG. 2) to the adhesive mechanism 2.
3 (FIG. 3) on the guide rail 22. Adhesive mechanism 23 includes a support 24 with a groove 25 at the edge and a pressure block 26 . It also has two storage magazines 53, 54 for sealing strips 27.28 in the form of "endless" tapes, the tapes being drawn from the supply rolls 29.30 in the magazines and fixed curved runners. 31, 32 and reaches the edge of the material strip 1 from below in the tangential direction.

In the gluing mechanism 23, the material strip l is drawn discontinuously between the support 24 and the pressure block 26, the material is placed on the support 24 and is provided with a soft backing to prevent scratching of the material strip. Pressure is applied by a pressure block 26 covered with. When the material strip is pressed on the support, the sealing strip 24 running along the groove 25 of the support 24 is pressed against the underside of the material strip l along the edge. The sealing strip 27.28 is applied to the underside of the strip I in a position where the edge of the strip 27.28 slightly projects above the edge of the material strip I.

The sealing strips 27, 28, usually velvet, are usually coated on the underside with melted glue. For sealing, the pressure block 26 is equipped with a known electric heating device (not shown), by means of which a strip of material consisting of sheet metal is heated.
The rim is heated inductively from above. By contact with the heated edge of the material strip l, the molten glue is melted, so that the sealing strip 27, 28 is bonded to the underside of the material strip l,
And after cooling, they are still combined.

When the sealing strips 27, 28 are delivered as endless strips, they bridge the cap notches 15, 16 on the underside of the strip 1, as shown in FIG.

For clarity, FIG. 3 shows the guide rail 22.33, the support 24 and the pressure block 26 in an exploded view with respect to the material strip l, but in fact the material strip l is connected to the guide rail 22. .33 and support 24.

By leaving the gluing mechanism 23, the material strips l are moved forward along the guide rail 33 in the direction of the arrow 55 and reach the separating mechanism 34, 40, which are again shown in an exploded view in FIG. It will be done.

Along the transport path of the material strip 1, the guide rail 33 is followed by a separating mechanism 34 for the sealing strip. This mechanism operates in the direction of the double arrow 37 by means of a matrix block 35 supporting the material strip l from below and a drive device (not shown) as the material strip l moves forward through the mechanism 34. is lowered to the matrix block 35,
and a raised blade block 36. The blade block 36 holds a pair of blades 37 , 38 on its underside and sinks into a narrow slot 39 in the matrix block 35 when the blade block 36 is lowered into the matrix block 35 .

Before the blade block 36 carries out its working stroke, the material strip l is moved into the matrix block 35 by a feeding device (not shown) such that the line of symmetry of the cap notch 15.16 lies on the slot 39. positioned above. As a result, when the blade block 36 is subsequently lowered, the portion of the sealing strip 27.28 bridging the cap notch 15.16 on the underside of the material strip l will be moved by the blade 37.38 into the notch 15, I6. When lowering the blade 37 in the exact line of symmetry of these notches.
．． 38.

Then the material strip l is separated by a separation mechanism 3 for the sealing strip.
4 to the cutting and separating mechanism 40. This is carried out by a matrix block 41 supporting the material strip l from below and by a drive device (not shown) in the direction of the double arrow 43.
and a cutting tool 42 that is lowered and raised. Matrix block 41 and cutting tool 42 have corresponding shear edges 44,45.

Before the cutting tool 42 is lowered to carry out the working stroke, the material strip l is positioned above the matrix block 41 so that the left edge of the final field 47 at the right end of the material strip l is , placed on shear l&44. This means that when the cutting tool 42 is lowered, the final field 47 at the right-hand end is separated from the material strip. The cutting section 47 constitutes the plate on which the cartridge wall is subsequently formed.

When the fields 47 which subsequently form the final field at the right-hand end of the material strip are cut by successive working strokes of the cutting tool 42, they pass from the chute 46 as a plate for the cartridge wall to the storage box 48. The plates 47, which in this case occur in succession, are temporarily stored for later use.

Each plate 47 is substantially rectangular and has a length of
is equal to the circumference of the subsequently formed cartridge wall, while its width is equal to the axial length of the cartridge wall. In fact, the form of the plate 47 deviates slightly from rectangular, the edges having a contour formed by the halves of the cap notches 15,16. The wide sides of the plate have a section of sealing strips on the underside, these strips protruding slightly beyond the peripheral edge of the plate on two sides.

In order to complete the formation of the cartridge walls and to form the entire cartridge, the plates 47 stored in the box 48 are conveyed to other working mechanisms, but these do not form part of this invention. Therefore, it is not shown.

To form the cartridge, it is temporarily stored in a storage box 48; the plate 47 is bent to form a cylindrical cartridge wall, as shown in FIG. The edges extend tangentially and the other edge is bent over 90 degrees.

The two edges of the plate 47, each carrying a section of the sealing strip 27, 28, face each other after the formation of the cylindrical cartridge wall and form a film opening 49. Plate 47-2
Sealing strips along the two edges are placed on surfaces in contact with each other to prevent light from entering the film opening 49 from which a film strip (not shown) inserted into the cartridge is subsequently withdrawn.

Each cartridge wall is then equipped with a separately produced film spool 50 (see FIG. (see figure). complete cartridge,
It is shown in FIG.

The outer edges of these end caps 51, 52 are beaded and tightly fitted to the edges of the cartridge wall 47. The axially symmetrical formation of the caps 51 and 52
Cap notches 15,16 cause the edge at the end of the cartridge wall 47 to spring back slightly in the area of the film opening 49, and the cap 51, 16 in the area of the opening 49.
It is possible to accommodate 52 bent edges. The light tightness of the cartridge in this area is nevertheless preserved because the sealing strips 27, 28 protrude slightly beyond the cut-out, as shown in FIGS. 3 and 4.

The invention is not limited to the embodiments described above by way of example.

- instead of using containers 4.48 for temporary storage,
The process is carried out without storage. Furthermore, endless strips in the form of rolls are used instead of limited length strips of material.

Instead of applying the sealing strip 27.28 to both edges of the material strip l, the strip is applied to only one edge and the other edge
Provision is made by other means to form a lightfast film opening 49 in the cartridge. The mechanism 34 for separating the sealing strip and the mechanism 40 for separating the plate 47 from the material strip l are combined and separate the sealing strip 27.
The tools for cutting 28 and separating the plates 47 are arranged along a common line of cutting.

producing a pair of notches, providing a sealing strip for one material strip l, cutting the sealing strip for one material strip l;
And instead of cutting out the material strip l in one step, it is possible, for example, to produce two or four pairs of notches, etc. in one step with corresponding multiple tools.

The embodiments disclosed herein may be applied to the manufacture of cartridges for different formats of film, as desired.

The main features and aspects of the invention are as follows.

■ a process for the manufacture of a film cartridge comprising a substantially cylindrical cartridge wall, the film opening extending along one production line of the cylinder and capped at the end; one plate for each cartridge is separated from a flat strip of material to form the walls of the cartridge, the strip of material containing plates for several cartridges and corresponding to the periphery of the formed cartridge wall. In the process, the strip of material is successively covered with a sealing material along at least one edge of the film opening before the plates are separated, the sealing material being covered with a bonding mechanism (23). A continuous length of sealing strip (27, 2) joined to the material strip (1) in an extending passageway.
8), characterized in that the material strips (1) are delivered in the form of:

2. It is noted that the material strips (1) used are strips of sheet metal that are coated with lacquer and/or covered with prints as required for the plates (47) forming the individual cartridges. The process according to item 1 above, characterized in:

3. Process according to claim 1, characterized in that the joining of the sealing strip (27, 28) to the material strip (1) is carried out by inductive heating of the sheet metal.

4. Before the sealing strip (27, 28) is applied to the material strip (1), the cap notch (15, 16) is inserted at a distance corresponding to the axial length of the cartridge wall to be formed. Formed along the longitudinal edges of the material strip, these cap notches (15, 16) are subsequently formed along the longitudinal edge of the material strip (1
Process according to item 1 above, characterized in that after being bonded to the cap notches (15, 16), the process is crosslinked by a sealing strip (27, 28) separated in the region of the cap notch (15, 16).

5. Process according to item 1 above, characterized in that the separation of the sealing strips (27, 28) in the region of the cap notches (15, 16) is carried out before the plates (47) are separated. .

6. The cap notches (15, 16) between the plates for one or more cartridges can be removed by single or multiple tools.
Process according to item 1 above, characterized in that the material strips (1) are punched in the rhythm of the working stroke.

7. Process according to item 1 above, characterized in that before the cap notches (15, 16) are punched out of the material strip, the notches are aligned in the correct position by adjustment pins.

8. Process according to claim 7, characterized in that the cap notches (15, 16) produced during one punching stroke are used for alignment in the next punching stroke.

9. Punch receptacle tool (11% 12), alignment tool (18, 19) and cap notch (15, 1)
6) is provided in the same holder 9. Process according to item 7 above.

10, a) a supply storage (29, 30) for a continuous band of sealing strips (27, 28); b) supplying the sealing strip (29, 30) from the supply storage (29, 30) to the material strip (1); 27, 28) means for issuing (31, 3)
2); C) means (26) for permanently joining the sealing strips (27, 28) to the material strip (1) 4m; d) the material strip (1);
) with means (34) for cutting the sealing strips (27, 28) connected to the cartridge wall along the separation line between adjacent sections (47) of the material strips (1) forming each cartridge wall. An apparatus for carrying out the process according to item 1 above, characterized in that:

11. Cap notches (15, 16) from the edge of the material strip (1) along the path for transport of the material strip (1)
Means (11, 12) for punching the sealing strip (
27, 28) is provided upstream of the device (31, 32) and means (34) for cutting the sealing strip (27, 28) are provided in the previously formed cap notch ( 15, 16)
The apparatus described in O.

12. Means for cutting the sealing strips (27, 28) (
34), a device (26) for joining the sealing strips (27, 28) to the material strip (1), and a compartment (47) in the form of a plate, each forming a cartridge wall, to the material strip (1);
1) and a device (40) consisting of a material strip (
1), characterized in that the device is located along a transport route for 1).

[Brief explanation of drawings]

FIG. 1 shows a mechanism for separating individual strips of material. FIG. 2 shows a mechanism for punching a notch for a cap. FIG. 3 shows a mechanism for feeding sealing strips and gluing them in place. FIG. 4 shows a cutting mechanism for cutting the sealing strip and separating the individual plates for the cartridge from the material strip. FIG. 5 shows a cartridge wall formed from a cartridge plate. FIG. 6 shows a cartridge plate with a film spool prior to insertion into the cartridge. FIG. 7 shows a cartridge with an inserted film spool and two caps before being placed on the cartridge. FIG. 8 is a diagram showing the completed cartridge. l... Material strip 211-0 Field 3... Star 7-ri 4... Magazine 5... Guide rail 7... Punch mechanism 9... Ram retainer 23... Adhesive mechanism 27 .28...Sealing strip 29.30...Supply storage 47...Adjacent compartment FIG, 2 FIG. FIG. 3

Claims (1)

Claims: 1. A process for manufacturing a film cartridge comprising a substantially cylindrical cartridge wall, the film opening extending along one production line of the cylinder and having an end one plate per cartridge is separated from a flat strip of material to form the walls of the cartridge, the strip of material containing plates for several cartridges and formed In the process, the strip of material has a width corresponding to the circumference of the cartridge wall and is continuously covered with sealing material along at least one edge of the film opening before the plates are separated. A process characterized in that the adhesive mechanism is applied to the strip of material in the form of a continuous length of sealing strip that is bonded to the strip of material in a passageway through which it extends. 2. a) a supply store for a continuous band of sealing strips; b) means for delivering the sealing strips from the supply store to the material strips; and c) permanently attaching the sealing strips to the material strips. d) means for cutting the sealing strip bonded to the strip of material along a line of separation between adjacent sections of the strip of material forming each cartridge wall; Characteristic claim 1
Equipment for carrying out the process described in Section 1.