FR2730475A1 - BAGGING SHEET FOR FLAT OBJECTS, IN PARTICULAR SLIDE FRAMES, AS WELL AS THE METHOD AND DEVICE FOR BAGGING SLIDE FRAMES IN SUCH A BAGGING SHEET - Google Patents

Abstract

The invention relates to a bagging sheet (1) for flat objects, in particular slide frames. This sheet consists of a bottom sheet (2) and a top sheet (3) which are connected to each other preferably by welding so as to form pockets (4) for respectively a slide frame. (13). In order to improve such a bagging sheet, several pockets (4) are provided in a direction (9) transversely to the longitudinal direction (8) of the sheet, which are respectively open towards a longitudinal side (6). The invention is particularly applicable in the field of photography.

Description

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  The invention relates to a bagging sheet for flat objects, in particular slide frames, consisting of a bottom sheet and an upper sheet which are connected to one another, preferably by welding so that pockets are formed for respectively a slide frame. The invention further relates to a method for bagging slide frames in such a bagging sheet and a device for introducing the slide frames into the pockets.

of such a bagging sheet.

  A bag sheet for slide frames of the type indicated at the beginning is known from the published German Patent Application 43 15 288. The bagging sheet described therein consists of a bottom sheet and a top sheet. which, by forming individual pockets, are welded to each other for respectively a slide frame. The bagging sheet is made in the form of an endless sheet. In a direction transverse to the longitudinal direction of the sheet, there are respectively provided several pockets, for example four, respectively for a slide frame. Each pocket is open in the longitudinal direction of the sheet. To fill the pockets, it brings a number of frames corresponding to the number of pockets in a position directly in front of the opening of each pocket. The slide frames will then be inserted into the pockets simultaneously. Then the endless bagging sheet is advanced in the longitudinal direction so that the filling operation can be repeated. In this case it is particularly advantageous that the filling operation and the advancement operation of the sheet can

be executed at the same time.

  European Patent 228,536 discloses a bagging foil for slide frames which consists of a bottom sheet and an upper sheet which are welded to each other in a direction transverse to the longitudinal direction of the bagging sheet so

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  thus forming through transverse pockets. The bagging sheet is further folded so that it is closed on the opposite side to the filling side. In each transverse pocket, it is possible to introduce several slide frames, for example three. However, in this case it is not possible to remove each slide frame separately. When you want to remove a slide frame further behind, you must first remove the slide frames in front of the sheet.

bagging.

  In order to be able to take out separately each slide frame, there are provided in the bagging sheet according to German Patent 37 08 880 slits extending transversely either in the lower sheet or in the upper sheet at a spacing corresponding to the length of the sheet. a slide frame from the closed end of the bagging sheet and where appropriate also in a

whole multiple of it.

  Although it is possible by German patent 37 08 880 to remove the slide frames individually, it is desirable in some cases of application to introduce the slide frames not in through pockets but to be able to insert each slide frame in a separate pocket. In a bagging foil according to the published patent application 43 15 288, which allows this, however, there are sometimes difficulties since it is necessary first to move the slide frames transversely to the longitudinal direction of the sheet and that they must then be inserted in a direction parallel to the longitudinal direction of the sheet in

pockets.

  The object of the invention is the improvement of a bagging sheet of the type indicated at the beginning and of proposing a method for bagging slide frames in the improved bagging sheet as well as a device for introducing the frames of the bag. slide in the pockets of the

Advanced bagging sheet.

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  According to the invention, this object is achieved for a bagging sheet of the type indicated at the beginning in that are provided in a direction transverse to the longitudinal direction of the sheet several pockets which are respectively open towards a longitudinal side . Contrary to the bagging foil according to the published German Patent Application 43 15 288, the pockets are therefore not open in the longitudinal direction of the sheet but in the transverse direction thereof. It thus becomes possible to move the slide frames as well during positioning in front of the openings of the respective pockets as when inserted in the pockets respectively in the same direction, namely in the

  transverse direction of the sheet.

  In the bagging sheet according to the invention are provided in the transverse direction of the sheet several pockets, so at least two, preferably however three to four pockets. It is also possible to provide an even larger number of pockets in a row

cross.

  Preferably, there is provided in the bottom sheet or in the top sheet, for the pockets behind the outermost pocket, respectively an insertion slot. The outermost pocket is the pocket at the insertion side. The pockets behind (or in the case of only two pockets in a transverse row, the pocket behind) respectively have an insertion slot through which the slide frame can be introduced into the area between the lower sheets and superior and can be positioned in the pocket. Preferably, the introduction slots are made continuously in the direction

longitudinal of the leaf.

  The sheet may have markings in its longitudinal direction whose spacing corresponds to the spacing of the pockets in the longitudinal direction of the sheet. In the case of markings it may be

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  markings that can be scanned optically. However, it is also possible to provide markings that can be mechanically palpated. An example is given in German Patent 41 03 910. In addition it is also possible to provide markings of another type. Preferably, there is respectively a marking between two neighboring pockets in the longitudinal direction. However, markings

  may also be provided elsewhere.

  A method for bagging slide frames in a bagging sheet according to the invention is characterized according to the invention in that a number of slide frames corresponding to the number of pockets existing in the transverse direction of the sheet. are brought into a position in front of the respective insertion slot of the respective pocket, in that the pockets are open and in that the slide frames are then pushed into the pockets. The opening of the pockets can take place already before the positioning of the frames of slide. It can however

  also take place during positioning or after.

  A device for introducing the slide frames into the pockets of a bagging sheet according to the invention is characterized according to the invention by a slide that can perform a back and forth motion to push a slide frame in the transverse direction of the sheet, means for opening the pockets and a pushing member for pushing one or more slide frames respectively into a pocket. By means of such a device it is possible to carry out the process according to the invention. For each frame of slide can be provided a separate push member. However, it is advantageous to provide only a single push element for all

slide frames to insert.

  The pushing element can be arranged under the bagging sheet. According to an alternative embodiment, the pushing element is disposed above the bagging sheet.

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

  will become clearer during the description

  explanatory following with reference to the accompanying schematic drawings given by way of example illustrating an embodiment of the invention, and wherein: - Figure 1 is a schematic top view of a bagging sheet with respectively three pockets lying one behind the other in the transverse direction of the sheet and a device for inserting slide frames in these pockets; - Figures 2a to 2c are schematic views of the bagging sheet and the device of FIGS. 3a to 3d are schematic side views of a device for introducing slide frames into the pockets of the bagging sheet shown in FIG. 1, the pushing member of FIGS. device being arranged under the bagging sheet, - Figures 4a to 4d are a variant of the device

  according to FIG. 3, the thrust element being disposed

  above the bagging sheet and - Figure 5 shows a bagging sheet with four pockets located one behind the other in the

  transverse direction of the leaf.

  The bag sheet 1 shown in FIG. 1 for slide frames consists of a bottom sheet 2 and a top sheet 3 which are welded to each other along lines 5 forming pockets 4. The pockets 4 have the shape of a U which is open towards a longitudinal side 6 of the bagging sheet 1. All the pockets 4 are open towards the same longitudinal side 6. As for the longitudinal side 6 as on the side 6 'opposite longitudinal, the lower sheet 2 and the upper sheet 3 are made so as to overlap to facilitate the opening of the bagging sheet 1. In addition, all pockets 4

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  have on their opening side oriented towards the longitudinal side 6 an insertion cone which is formed by respectively two opposite lines 7, extending along a

angle of about 45.

  In a direction transverse to the longitudinal direction 8 of the sheet, so in the transverse direction 9 of the sheet are made respectively several pockets 4, namely three. The bagging sheet 1 has in its longitudinal direction 8 marks 10 whose spacing corresponds to the spacing t of the pockets 4 in the longitudinal direction 8 of the sheet. The marks are respectively between two pockets 4 adjacent in the longitudinal direction. At the opposite side 6 'to the longitudinal side 6 of the bagging sheet 1, there is provided an additional row of marks 10'. These marks 10 'are also respectively in a precise manner between

  two pockets 4 adjacent in the longitudinal direction 8.

  There are provided in the upper sheet 3 continuous introduction slits 11, 11 'which extend parallel to the longitudinal sides 6, 6' of the bagging sheet 1, thus in the longitudinal direction 8 of the sheet. The first insertion slot 11 is located behind the row of the outermost pockets 4, hence behind the pockets which are located closest to the longitudinal insertion side 6 and which are open towards this longitudinal insertion side 6. These The outermost pockets 4 can be filled through the insertion longitudinal side 6. The first insertion slot 11 serves to fill the pockets behind. The second insertion slot 11 'is provided in a similar manner to allow filling of the

  pockets 4 furthest from the introductory slot 6.

  To fill the pockets 4, there is provided on the outside of the bagging sheet 1 at the insertion longitudinal side 6 a vertical storage well 12 in which a large number of slide frames 13 are stacked on each other.

  other. Each slide frame 13 is in this one

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  ci in the horizontal direction, thus parallel to the extent of the bagging sheet 1. The slide frame 13 and the lowest in the well 12 can be moved by a slide 14 movable back and forth in the transverse direction of sheet 9

to the bagging sheet 1.

  FIG. 2 shows a device for filling slide frames in the pockets 4 of the bagging sheet 1 shown in FIG. 1. First, the slide frames 13 are brought into the position shown in FIG. Figure 2a in front of the respective insertion slot. The rearmost slide frame 13, i.e. furthest to the left in Fig. 2a, is in front of the rear insertion slot 11 '. The central slide frame shown in the middle in Figure 2a, is located with its rear edge remote from the well 12 directly in front of (in Figure 2a directly to the right of) the front insertion slot 11. The third most important slide frame right in Figure 2a is still in the vicinity of the well 12; it constitutes the lowest slide frame in this well 12 which will now be moved by the slider 14. This slide frame 13 is already in its position at the lower end of the well 12 directly in front of the insertion slot of the poached

  4 the outermost, the far right in Figure 2a.

  This insertion slot is formed by the longitudinal ridge

outside 6.

  In the next step shown in FIG. 2b, the pockets 4 are opened by appropriate means, not shown in the diagrammatic view of FIG. 2. The surfaces of the pockets 4 constituted by the upper sheet 3 are raised at their sides towards the insertion side 6 so as to open the pockets 4. This brings the rear edges of the slide frames 13 in the area in front of the thrust nose 15, 15 'of the thrust member 16. The thrust member 16 has two thrust nose 15, 15 'protruding

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  down whose spacing basically corresponds to the

length of a slide frame.

  In the next step shown in FIG. 2c, the pushing member 16 is moved horizontally in the transverse direction 9 of the sheet. The pushing noses 15 'of the push member 16 apply to the front edges of the slide frames 13 and push them into the rear and central pockets 4. At the same time, the front end of the slide 14 applies to the rear end of the slide frame 13 completely down into the storage well 12 and pushes it through the insertion slot

6 in the front pocket 4.

  In the vicinity of the insertion slots 6, 11, 11 'there are provided adhesive strips 17 which are respectively at the lower side of the upper sheet 3, namely directly in the area following the respective insertion slot 6, 11, 11 '. The adhesive strips 17 cause a bonding or adhesion of the respective topsheet 3 to which they are attached with the next sheet underneath. They thus cause a certain resistance to the opening of the pockets 4 so that the frames of the slide 13 are secured against a fall no

intentional pockets 4.

  The upper sheet side 3 is connected to the rear area of each pocket at the bottom side of sheet 2, and this along lines 18, 18 'extending parallel to the

  longitudinal direction 8 of the sheet.

  FIG. 3 shows a device for inserting the slide frames into the pockets of a bagging sheet where the pushing member 16 is arranged under the

bagging sheet 1.

  In the first step shown in Fig. 3a, the lowest slide frame 13 of the stack is first pushed towards the bag sheet 1 (in Fig. 3a to the right). It is then under the outermost pocket. The bagging sheet 1, in the device according to FIG. 3, is "inverted"; the side

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  lower 2 is at the top, and the upper side 3 is at the bottom. Therefore, the slide frame in Figure 3a is under the outermost pocket of the

bagging sheet 1.

  After removing the slider 14 and after pushing it again to the right, one reaches the position shown in Figure 3b. The slider 14 has now pushed the next slide frame to the bag sheet 1 (in Fig. 3b so to the right). At the same time, the frame that has already been pushed before to the bagging sheet 1 is moved one position farther to the right and that in that the front end of the next slide frame applies to the The rear end of the slide frame initially already inserted and pushes it to the bagging sheet 1. By moving the slide 14 is therefore moved two frames simultaneously. In the position of Figure 3b, the second slide frame is under the outermost pocket, and the first frame is under the middle pocket. In addition, this first frame is directly in front of the rear insertion slot 11 ', and the second frame is with its front edge directly in front of the slot

insert before 11.

  Then, the slide 14 is returned to the position shown in FIG. 3c, and the slide frames 13 which are already under the bagging sheet 1 and which are positioned in front of the insertion slots 11, 11 ', are pivoted by means not shown in the drawing until

  what they occupy the position shown in Figure 3c.

  In it, they are oriented slightly at an angle. The front ends of the slide frames, so the far ends of the slider 14 of the slide frames have been slightly moved upward to the bagging sheet 1. They now lie between the

sheets 2 and 3.

  Then takes place the step shown in Figure 3d.

  The pushing member 16 is moved in the direction of the

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  arrow 19, so in the transverse direction of the sheet and slightly upwards. The pushing noses 15, 15 'are applied to the rear ends of the slide frames 13 and pushing them past the insertion slots 11, 11' in the pockets 4. In addition, at the same time the slide 14 in the transverse direction 9 of the sheet so that it pushes the next lowest slide frame 13 of the reserve battery through the insertion slot 6 in the outermost pocket 4. To prevent the bag sheet 1 from being wrinkled or curled, the front end of the bottom sheet 2 (in

  top in FIG. 3) is tightened by a clamping bar 20.

  FIG. 4 shows a variant of the device shown in FIG. 3 where the same parts bear the same reference numerals. In contrast to the device according to FIG. 3, the thrust element 16 is placed in the device according to FIG. 4 above the bagging sheet 1. Therefore, in this case the bottom sheet 2 is on the bottom side and top sheet 3 is on the upper side. The direction of movement 19 of the pushing member 16 is oriented in the transverse direction of the sheet and slightly downwards, thus again towards the bagging sheet 1. The clamping bar 20 is now also located on the lower side. She exercises on the bottom sheet

  2 the force indicated by the arrow 21.

  There is shown in Figure 5 a variant of the bagging sheet o are arranged in the transverse direction of the sheet respectively four pockets. In addition, the marks 10 are provided only on the longitudinal side 6 'of the bagging sheet 1 opposite the insertion side 6. In order to make the sheet with a narrower width, the marks 10 are to a great extent between two neighboring pockets 4. They only project slightly outwards in the transverse direction of the sheet. In addition, the pockets are arranged in the transverse direction of the sheet also

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  close to each other that the slide frames 13 therein overlap slightly in the manner of scales 6. The upper sheets 13 can be raised and, respectively (in the case of the solution according to Figure 3) lowered in the vicinity of the insertion slots 6, 11, 11 'by

  gripping elements 22 essentially U-shaped to thereby open the pockets 4.

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Claims (7)

  1. Bagging sheet for flat objects, in particular slide frames (13) consisting of a bottom sheet (2) and an upper sheet (3) which are connected to each other, preferably by welding, so as to form pockets (4) for respectively a slide frame (13), characterized in that are provided in one direction (9) transversely to the longitudinal direction (8) of the sheet several pockets (4) which are respectively open towards a longitudinal side (6).   Bagging sheet according to Claim 1, characterized in that the bottom sheet (2) or the top sheet (3) is provided for the pockets (4) lying behind the outermost pocket (4). )   respectively an insertion slot (11, 11 ').   Bagging sheet according to one of the claims   1 or 2, characterized in that the sheet (1) has in its longitudinal direction (8) marks (10, 10 ') whose spacing (a) corresponds to the spacing (t) of the pockets (4)   in the longitudinal direction (8) of the sheet.   4. A method for bagging slide frames (13) in a bagging sheet (1) according to one of   Claims 1 to 3, characterized in that a number of   slide frames (13) corresponding to the number of pockets (4) present in the transverse direction (9) of the sheet are brought into a position in front of the respective insertion slot (11, 11 '), that the pockets (4) are open and the slide frames (13) are pushed then in the pockets (4).   5. Device for introducing slide frames (13) into the pockets (4) of a sheet   bagging device (1) according to one of claims 1 to 3,   characterized by a slider (14) movable back and forth to urge a slide frame 13 2730475   in the transverse direction (9) of the sheet, means (22) for opening the pockets (4) and a pushing member (16) for pushing one or more slide frames (13) respectively in a pocket (4).   6. Device according to claim 5, characterized in that the pushing element (16) is arranged under the sheet Bagging (1) (Figure 3).   7. Device according to claim 5, characterized in that the pushing element (16) is arranged above the bagging sheet (1) (Figure 4).