FR2712255A3 - Process for the pocket storage of slide frames as well as device for implementing this method. - Google Patents

Abstract

The invention relates to a device for pocketing frames of slides. This device has a pocket sheet (23) comprising pockets which follow one another in the longitudinal direction of the sheet (24) provided respectively with a rear wall (25) and a front wall (26) as well as a opening oriented in the longitudinal direction of the sheet (24). The slide frames (2) are pushed into the pockets. To improve such a device, there is provided a pushing device, preferably a push button for pushing a slide frame (2) into a pocket. An opening mechanism preferably consisting of a leaf spring (19) serves to open the pocket. The invention is particularly applicable in the field of slide packaging.

Description

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  The invention relates to a method for placing a slide frame in a pocket sheet comprising at least one pocket having a rear wall and a front wall and an opening through which the slide frame is inserted into a pocket sheet. the bag, as well as a device for implementing such a method. Preferably, the pocket sheet has several pockets which

  follow in the longitudinal direction of the sheet.

  In addition, there are also arranged in a direction transverse to the longitudinal direction of the sheet respectively several pockets next to each other; therefore, rows (transverse rows) of pockets in a direction transverse to the longitudinal direction of the sheet have been provided next to one another. The pockets each have a rear wall and a front wall. They furthermore have respectively an opening

  oriented in the longitudinal direction of the sheet.

  A pocket sheet comprising pockets which follow in the longitudinal direction of the sheet, which respectively have a rear wall and a front wall and which have an opening oriented respectively in the longitudinal direction of the sheet is known by the

  Swiss patent 631 405 to which reference is expressly made here.

  This pocket sheet consists of a lower layer of preferably transparent synthetic material which constitutes the rear wall of the pockets. A front wall is connected, preferably by welding beads, to this rear wall. Each pocket is formed by three weld seams. Several pockets in a row (transverse row) have been arranged transversely to the longitudinal direction of the sheet respectively. The opening of the pockets is oriented respectively in the longitudinal direction of the sheet. In addition, the end portions adjacent the pocket opening of the front walls and the rear walls are separated from each other so as to obtain on the front walls an insertion lip.

  extending along the pocket opening.

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  A device for pocket storage of slide frames in such a pocket sheet is known from German Patent No. 30,545, to which reference is also here expressly made. This device allows the automatic bagging of slide frames in the tape-shaped packaging material known from Swiss Patent 631 405 which has pockets arranged in rows (transverse rows) transverse to the longitudinal direction of the strip. The strip-shaped pocket sheet is first displaced substantially vertically upwardly. Then, at the edge of a table provided for insertion, it is deflected in a horizontal direction. In doing so, the pocket sheet is moved until the openings of a transverse row of pockets are in the vicinity of the mentioned deflection edge. Then, slide frames located next to each other in a row are moved first upward, so in a direction perpendicular to the table provided for insertion, to the free end sections of the pockets. The slide frames are next to each other horizontally, so parallel to the horizontal surface of the table provided for insertion. Due to the aforementioned upward movement, the edges of the slide frames strike the insertion lip mentioned above. The pockets are thus open. Then, the slide frames are pushed in the horizontal direction, so in a direction parallel to the table provided for insertion (and therefore in a direction perpendicular to the deflection edge) in the

individual pockets.

  From the German patent application P 43 15 288.0 previously filed, which however has not been published previously, and which is also expressly referred to, is known a method and a device for the insertion of slide frames into a sheet with pockets which, in the embodiment shown on the

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  Figures 3 and 4, has at least one row of pockets extending transversely to the longitudinal direction of the sheet which respectively have an opening oriented in the longitudinal direction of the sheet. A pusher extending transversely to the longitudinal direction of the sheet is movable in the longitudinal direction of the sheet. The slide frames are pushed first, starting from a feed well, transversely to the longitudinal direction of the sheet on the pocket sheet. In doing so, an edge is already in the opening of the pockets. The slide frames are pushed along the lip of insertion of the pockets

  transversely to the longitudinal direction of the sheet.

  The object of the invention is the creation of an improved method and an improved device of the type indicated

in the beginning.

  In a process of the type indicated at the beginning, this object is achieved by the fact that the pocket will be opened before

  inserting the slide frame.

  Preferably, the front wall of the pocket is raised.

  The pocket is thus opened by the fact that the front wall of the pocket is raised, that is to say it is moved away from the

rear wall.

  According to an advantageous further development, the advance movement of the slide frame causes the opening of the pocket. The forward movement of the slide frame is therefore the movement by which the frame of

  slide is introduced into the pocket.

  This considerably simplifies the process compared to the solution described in German Patent No. 5,545. In the known method, it is necessary to provide two displacements extending perpendicularly to each other of the slide frames. First, the slide frames are moved in a direction perpendicular to the open pocket to open the pocket. This opening is caused by an edge of the frame of

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  slide. Then the slide frames are

  introduced in the plane of the pockets, in these.

  By cons, when using the solution according to the invention, a displacement of the slide frames in a direction perpendicular to the plane of the open pocket

is not necessary.

  The object of the invention is achieved in a device for carrying out the method according to the invention by a device comprising a forward thrust mechanism, preferably a pusher, for pushing a slide frame in a pocket as well as an opening mechanism for opening the pocket. The opening mechanism opens the pocket. Then the slide frame is pushed by the

  push mechanism forward in the pocket.

  Preferably, the opening mechanism is constituted

by a leaf spring.

  An advantageous further development is characterized in that the lower end, thus the end facing the pocket sheet, of the opening mechanism or leaf spring engages in the opening of the pocket. For this purpose, the lower end of the opening mechanism or leaf spring may have a curvature oriented towards the opening of the pocket. The lower end of the opening mechanism or leaf spring can therefore also be

  curved towards the opening of the pocket.

  Another advantageous development is characterized by a deflection pulley for deflecting the pocket sheet into a position aligned with the direction of forward thrust of the slide frame. The pocket sheet can be fed, for example, first from the bottom. It then passes on a pulley mounted rotatably about a horizontal axis whereby the sheet is deflected in a horizontal plane. The slide frames lie flat in a horizontal plane that is aligned with the plane of the

  pocket sheet after deflection by the idler pulley.

  Advantageously, the return pulley has areas of larger diameter so that the sheet to

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  pockets is at a height higher than the support surface of the slide frames. As a result, the pocket sheet is deflected over the idler pulley over a larger diameter. The slide frames are brought into the vicinity of the deflection pulley having the smaller diameter. This height gain of the pocket sheet simplifies and facilitates

moreover put in pocket.

  Another further development is characterized by a pressure roller in the pushing direction of the slide frame behind the opening mechanism or the leaf spring, and which can be moved in a direction perpendicular to the direction of advance of the frames. of slides and which can further be subjected to the action of a spring and that so that it is preliminarily loaded in the direction towards the pocket sheet. It can be preliminarily loaded in this direction also by the force of gravity. When there is a deflection pulley, the pressure roller is preferably

opposite to this one.

  Preferably, there are provided several forward thrust mechanisms or pushers located next to each other in a row. For each slide frame, one

can provide several pushers.

  Another advantageous development is characterized by a row of opening mechanisms or leaf springs located next to each other in a row. The arrangement may be provided for one or respectively an opening mechanism or leaf spring is disposed between two or respectively two pockets located next to each other. Opening mechanism or leaf spring opens

  in this case two neighboring pockets.

  Another advantageous development is characterized by a transport mechanism disposed transversely to the longitudinal direction of the sheet for positioning a row of slide frames in front of the push mechanisms. The transport mechanism is preferably constructed so that the slide frames do not

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  are not disposed edge to edge but to a certain gap that corresponds to the gap between the pockets of each other. Preferably, the transport mechanism is constituted by a toothed belt with riders whose riders have a width sufficient for the slide frames

  are positioned according to the correct spacing.

  The invention will be better understood and other purposes, features, details and advantages thereof

  will become clearer during the description

  explanatory text which will follow with reference to the accompanying schematic drawings given solely by way of example illustrating an embodiment of the invention, and in which: - Figure 1 is a device for placing pocket slide frames in one front view; - Figure 2 is a top view of the device shown in Figure 1; - Figure 3 is a top view of the device, without guide plate; - Figure 4 is a top view of the device before insertion of the slide frames in the pockets; - Figure 5 is a top view of the device after insertion of the slide frames in the pockets; - Figure 6 is a front view, on a larger scale, the leaf spring acting as an opening mechanism; Figure 7 is a side view of the leaf spring in its basic position; and - Figure 8 is also a side view of the spring

  with blades after the opening of the pocket.

  The device represented by a front view in FIG. 1 and a view from above in FIGS. 2 to 5 for pocket positioning of slide frames in a pocket sheet has a feed well 1 in which the frames of slides 2 are stacked. Under the open bottom end of the well 1, two parallel, endless and spaced toothed belts 3, 4 are arranged which are

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  driven, respectively, by a pulley 5, 6 and which rotate respectively about an idler pulley 7, 8. The axes of rotation 9, 10 extend respectively

  horizontally and at a certain distance from each other.

  They lie in a horizontal plane so that the upper strand 11, 12 of each toothed belt 3, 4 also extends in a horizontal plane. Timing belts 3,

  4 are driven in the direction of the arrows 13, 13 '.

  There are arranged on the upper sides or outer sides of the notched belts 3, 4 of the riders 14 facing upwards or outwards whose spacing is exactly as large as the spacing between the pockets.

from the pocket sheet.

  In the direction of movement 13 of the upper strand 11, a support plate 15 follows the well 1 and slides on the upper strand 11, 12 of the toothed belts 3, 4. By the riders 14 toothed belts 3, 4, respectively the lower frame 2 is transported from the well 1 in the direction of the arrow 13. Above the slide frames 2 on the toothed belts 3, 4 there is disposed a guide plate 16 integral with the housing which s' extends parallel to the toothed belts 3, 4 and is arranged at a relatively small distance from the face

  top 17 slide frames.

  At the front end of the guide plate 16 is a upwardly projecting flexible needle blade 18 on which are screwed the leaf springs 19 acting as an opening mechanism, respectively with a bolt 20. blade 19 is disposed in a groove 41 extending vertically downward which is slightly wider than the width of the leaf spring 19 and whose depth substantially corresponds to the thickness

of the leaf spring 19.

  In front of the flexible needle blade 18, a deflection pulley 21 is mounted so as to be rotatable about an axis 22 extending horizontally, parallel to the connecting line of the pulleys 9, 10. The pocket sheet 23 is

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  fed to the pulley 21 in a vertical direction from the bottom. It is deflected by the pulley 21 of 90 and transported forward in the direction of the arrow 24

in a horizontal plane.

  The pocket sheet 23 has a large number of pockets which respectively have a rear wall 25 and a front wall 26. The rear wall 25 consists of a

  continuous (lower) sheet layer. We connected to that

  and another sheet, which constitutes the front wall 26, by welds 27. The welds 27 terminate at a gap b relative to the front edge 28 of the front wall 26 whereby a lip is formed to insert the slide frames 2. The pockets are arranged in transverse rows comprising respectively four pockets. Each transverse row extends in a direction perpendicular to the longitudinal direction of the sheet 24. The openings of the pockets are oriented in the

  longitudinal direction of the sheet 24.

  At the side of the toothed belts 3, 4 opposite to the deflection pulley 21, pushers 29 which can

  a movement back and forth in a horizontal plane.

  The device operates as follows: as seen in Figure 3, at first, there are no slide frames in the device. The slide frames 2 are introduced into the well 1. They are taken by the toothed belts 3, 4 individually at the lower end of the well 1 and are transported in the direction of the arrow 13 in the device. In the position shown in Figure 2, five slide frames 2 are arranged one behind the other on

the timing belts 3, 4.

  On arrival at the position shown in Figure 2, it stops the toothed belts 3, 4. Now, the pushers 29 are in action. They push the slide frames 2 in the direction of the arrow 24 into the pockets of the pocket sheet 23. In doing so, they first reach the position shown in Fig. 5 in which

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  each pocket is filled with a slide frame. Then, the pushers 29 are moved further in the direction of the arrow 24. The slide frames then bear on the rear ends of the pockets so that the pocket sheet 23, by the further movement of the pushers 29, is It is also pushed in the direction of the arrow 24. The bag sheet 23 is then pushed until it occupies the position shown in FIG. 4. In this position, new empty pockets are in the filling position. The pushers 29 are then returned to their starting position (Figures 2, 3 and 4). Then, the toothed belts 3, 4 can be moved again in the direction of the arrow 13, whereby the four following slide frames 2 reach the position shown.

  in Figure 2. Here begins a new work cycle.

  The opening mechanism consisting respectively of a leaf spring 19 for opening the pockets is

  represented, on a larger scale, in FIGS. 6, 7 and 8.

  Each of the oblongly oblong leaf springs 19, which is substantially rectangular, is connected at its upper end by means of a bolt 20 and a washer 31 to a flexible needle blade 18. The leaf spring may consist of a steel sheet for springs with a thickness of 0.5 mm extends from there to the bottom. It is curved at its lower end in the manner visible in particular in Figure 7, namely in the direction towards the opening of the pocket. The curvature 32 at the lower end of the leaf spring 19 extends

  close on an angle between 45 to 60.

  As seen in FIGS. 7 and 8, the pocket sheet is conveyed substantially vertically upwardly in the direction of the arrow 33. Below the idler pulley 21, the pocket sheet 23 is guided along a guide plate 34 slightly inclined. It then applies to the pulley 21 by which it is deflected at an angle slightly greater than 90 in a horizontal direction. Shortly after leaving the pulley 21, the pocket sheet 23 rests again

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  on a flat horizontal guide plate 35 which is aligned with the support plate 15. The deflection pulley 21 has areas of greater radius (deflection radius) or diameter

  and areas between, of smaller diameter 42.

  The smaller diameter areas are opposed to the slide frames 2. They are slightly larger than a slide frame 2 so that they can accommodate a slide frame, respectively. Areas of larger diameter are located between them. The pocket sheet 23 is visibly applied in Figures 7 and 8 to the larger diameter regions 40 of the idler roller 21. As a result, the pocket sheet is fed in a higher plane. When it reaches the highest point of the deflection pulley 21, it is at a height greater than the surface of the support plate 15 and also at a height greater than the surface of the guide plate 35. against, the highest point of the areas having the smaller diameter 42 is at the same height as the surface of the support plate 15 and the surface of the guide plate 35. The difference in height is about 1.5 mm. Correspondingly, the slide frames 2 are introduced into the smaller diameter areas 42. The pocket sheet 35 is at a higher height of about 1.5 mm. This height gain simplifies and facilitates

even more putting in pocket.

  The lower end of the leaf spring 19 projects under the lower end face 36 of the guide plate 16. It is located between the support plate 15 and the

pulley 21.

  In Fig. 7, the pocket sheet 23 is in a position ready to receive the next slide frame 2. The bottom layer of the pocket sheet 23, thus its rear wall 25, is applied to the outer periphery of the pulley 21 in the areas with the larger diameter 40. On the other hand, the front wall 26 of the pocket sheet which terminates at the edge 28 extends rectilinearly. It is located in a more

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  The front wall 26 therefore differs in the manner visible in FIG. 7 from the rear wall 25. Thus, an opening is formed between the rear wall 25 and the rear wall 25. the front wall 26 which is however not sufficient to insert

  sure way a slide frame.

  However, the opening will be sufficiently large when it has been widened by the lower end 32 of the leaf spring 19. This is shown in FIG. 8. By the forward pushing movement of the slide frame 2 into the direction of the arrow 24 which is produced by the pushers 29, the front edge 37 of the slide frame 2 strikes the rear side of the leaf spring 19, and this in the region of the leaf spring 19 protruding under the face 36. In the further pursuit of the pushing movement of the slide frame 2, the leaf spring will then be bent. The lower end 32 of the leaf spring 19 engages in the opening of the pocket between the rear wall 25 applying to the zones having the larger diameter 40 of the peripheral surface of the return pulley 21 and the wall before 26 away from it. Upon subsequent bending of the leaf spring 19 about its attachment point 20, the lower end 32 of the leaf spring 19 moves forward (to the left in FIGS. 7 and 8) and at the same time to the top. The pocket is thus open enough to be able to insert quickly and without problem

slide frame 2.

  FIG. 8 shows the position in which the front edge 37 of the slide frame 2 has already passed the front end 32 of the leaf spring 19. This front end 32 of the leaf spring 19 now rests with the rounded rear side on the surface 17 of the slide frame 2 which can then be inserted completely into the

  pocket, in the direction of advance 24.

  In front of the deflection pulley 21, a pressure roller 38 has been arranged whose axis of rotation extends parallel to and at a certain distance from the axis of rotation.

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  rotation 22 of the return pulley 21. The axis of rotation of the pressure roller 38 is offset relative to the axis of rotation 22 of the return roller 21 in the manner visible in FIG. 7 in the horizontal direction away from the spring with blades along the x-axis distance. The pressure roller 38 rotates on the areas having the larger diameter 40 of the deflection pulley 21. It is disposed in the thrust direction 24 of the slide frame 2 behind the leaf spring 19. The pressure roller 38 and the plate 16 are located at different sides of the leaf spring 19. Between the deflection pulley 21 and the pressure roller 38 passes the pocket sheet 23 first empty (Figure 7) and then filled (Figure 8) by a slide frame 2. The pressure roller 38 raises the insertion lip 28 of the pocket sheet 23 even more which facilitates the bagging operation. The pressure roller 38 is displaceable in the direction of the double boom 39. This movement has a component in a direction perpendicular to the horizontal plane of the guide plate 35 so that the difference in thickness between the empty sheet 23 (FIG. 7) and the sheet 23 filled with a slide frame 2 (FIG. 8) can be balanced

  and that the sheet 23 can be put in place more easily.

  In addition, the pressure roller 38 is preliminarily loaded downwards, for example by the force of gravity

  and / or a spring not shown in the drawing.

  The leaf springs are arranged, in particular in the manner visible in FIG. 6, respectively between two slide frames 2. Their width B is greater than the gap A between two neighboring slide frames 2 so that the leaf spring 19 open two pockets of the pocket sheet in their areas.

respectively lateral.

  The device described is of a simple construction. It requires a succession of simple movements including insertion into the pockets of the pocket sheet. It allows

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  to insert the slide frames in a more

  reliable and faster in the pocket sheet.

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Claims (14)

CLAIMS CATIONS   A method of placing a slide frame (2) in a pocket sheet (23) having at least one pocket having a rear wall (25) and a front wall (26) and having an opening in which the slide frame (2) is pushed into the pocket, characterized in that the pocket is opened before the frame is introduced. slide (2).   2. Method according to claim 1, characterized in that   that the front wall (26) of the pocket is raised.   3. Method according to one of claims 1 or 2, characterized in that the forward pushing movement (24) of the slide frame (2) causes the opening of the pocket. 4. Device for implementing the method according to   one of claims 1 to 3, consisting of a device for   forward thrust (29), preferably a pusher (29) for pushing a slide frame (2) into a pocket and   an opening mechanism (19) for opening the pocket.   5. Device according to claim 4, characterized in that the opening mechanism is formed by a spring to blades (19).   6. Device according to one of claims 4 or 5,   characterized in that the lower end (32) of the opening mechanism or leaf spring (19) engages in the opening.   7. Device according to one of claims 4 to 6,   characterized in that the lower end (32) of the opening mechanism or leaf spring (19) has a   curvature (32) facing the opening of the pocket.   8. Device according to one of claims 4 to 7,   characterized by a return pulley (21) for returning the pocket sheet (23) to a position aligned with the   pushing direction (24) of the slide frame (2). 2712255   Device according to claim 8, characterized in that the deflection pulley (21) has areas of larger diameter (40) so that the pocket sheet (23) is at a higher height than the bearing face (15) of the slide frames (2).   10. Device according to one of claims 4 to 9,   characterized by a pressure roller (38) in the pushing direction (24) of the slide frame (2)   behind the opening mechanism or leaf spring (19).   11. Device according to one of claims 4 to 10,   characterized by a row of push mechanisms or   pushers (29) located next to each other.   12. Device according to claim 11, characterized by a row of opening mechanisms or springs to   blades (19) located next to each other.   13. Device according to claim 11 or 12, characterized in that an opening mechanism or a leaf spring (19) is disposed between two pockets located next to each other. the other.   14. Device according to one of claims 11 to 13,   characterized by a transport mechanism (3, 4, 5, 6, 7, 8) disposed transversely to the longitudinal direction of the sheet (24) for positioning a row of slide frames (2) in front of the push mechanisms or pushers (29).