SE537495C2 - Folding device and method of enveloping - Google Patents

Abstract

The invention relates to an enveloping device (1) comprising means for preparing envelopes from individual sheets (A), in which sheets (A) preferably at least one insert (I) are fed. Said means comprises a folding device (2) with at least three rollers (3 ', 3 ", 3'") for feeding and folding said sheet (A), a guide (9, 9 ') arranged to effect a bend of said sheet. sheet (A) and a stop (13, 13 ') in cooperation with said guide (9, 9') for determining where in said sheet (A) folding is to take place. Said folding device (2) comprises a first roller (3 ') driven by a motor (M) which first roller (3') in engagement with a second roller (3 ") feeds the sheet (A) to said guide (9, 9 ') and in cooperation with a third roller (3 ") folds said sheet (A).

Description

TECHNICAL FIELD The present invention relates to an enveloping device according to the preamble of claim 1 and a method for enveloping inserts in accordance with the method specified in claim 8. The invention relates to the manufacturing industry for enveloping machines and / or printers. However, the invention is not limited to this.

BACKGROUND Envelopes of inserts today take place in different ways with different complexity of the devices.

The majority of rolls of various kinds are usually used to fold sheets of paper into envelopes and / or to fold inserts so that they fit inside the folded envelope. Kanda enveloping devices can have problems with positioning inserts in the envelopes and can sometimes be perceived as time-consuming, complicated to both manufacture and use and costly. It is therefore advisable to provide an enveloping machine with a good positioning design of inlays which have lower complexity, which is cost-effective, time-efficient and user-friendly.

Patent FR2724642 discloses a folding device for folding envelopes from individual sheets with inserts enclosed in the finished envelope. The folding device comprises four rollers, of which a first roller is movably arranged to create a space between the first and a second roller. The purpose of the space between the rollers is to allow sheets to fall by gravity between the rollers and further down into a first pocket which causes a bending of the sheet. The sheet is kept intact in the pocket while inlays are fed to the sheet, after which the movably arranged roller is positioned in engagement with the said second roller. The bent sheet and inserts are fed s5 between the second roll in cooperation with a third roll, which provides a first folding. The folded sheet together with inserts is placed in a second pocket and then fed between the second roll in cooperation with a fourth roll and 5 p5 s5 provides a second folding. FR2724642 shows a device for folding envelopes with inserts which facilitates the positioning of inserts in the envelope. However, the construction shown in FR2724642 relies on gravity, which meant that operational reliability could not be guaranteed. Similarly, due to this, the construction can involve paper clutter and involve slow paper handling. Furthermore, it can be considered time-consuming to fold the sheet twice to complete an envelope.

SUMMARY OF THE INVENTION The need for the quartz father to be able to provide the enveloping device described above stated in the preamble of claim 1 so that it becomes time efficient in use, operational matters, user-friendly and cost-effective.

Furthermore, the object is to further develop prior art to provide an enveloping device, which comprises a smaller number of details than prior art, which facilitates manufacture of the enveloping device and entails a non-bulky enveloping device.

The object of the invention is likewise to provide an enveloping device which easily and time-efficiently positions inserts in a correct position in the envelope.

DESCRIPTION OF THE INVENTION The above-mentioned objects have been loaded by means of the enveloping device defined in the introduction according to the can part of the jug of claim 1.

P5 s5 sat 5 a enveloping device is provided where one and the same driven roller in cooperation with tv5 different rollers, both feeds and folds sheets. The folding device of the enveloping device prepares p5 a quick and easy set of an envelope by means of a fold. P5 s5 sat 5 a compact non-bulky enveloping device is provided, which s5 includes 15 details as possible, which in turn entails lower manufacturing costs. The enveloping device is less complicated and involves easy handling during use and during service.

Preferably, the individual axes of the rollers are arranged parallel to each other where a tanked first line between the axis of the first and the second roller intersects a tanked second line between the shaft of the first and the third roller substantially perpendicularly. 2 537 49 P5 s5 set creates a compact enveloping device where inserts can be transported along a straight conveyor line p5 an efficient set and where the third roller cooperates with the first roller for discharging the finished envelope containing insert further to a sealing module.

A sensor is suitably arranged so that it senses the position of the folded sheet. The sensor is connected to the motor of the first roll and at a predetermined position for the folded sheet the rotational speed of the first roll is reduced.

Alternatively, a sensor is arranged so that the position of the folded sheet and at the predetermined position of the folded sheet reduces the rotational speed of the first roll to zero and the first roll 5 is completely stopped.

Suitably, two sensors are arranged in pairs to frame the position of the folded sheet and at a first predetermined position for the folded sheet, the rotational speed of the first roll is reduced. Furthermore, a second predetermined position for the folded sheet is identified, whereby the rotational speed of the first roll is reduced to zero and the first roll is completely stopped.

The sensor is arranged downstream of the first and third rollers.

Alternatively, the sensor is arranged at the guide.

This facilitates the feeding of inserts into the folded sheet.

Preferably, the third roller is movably arranged relative to the first roller to create a gap between the first and the third roller.

Alternatively, the third roller is arranged so that a fixed gap 5 is created between the first and the third roller.

When folded, the folded sheet can be opened slightly, the folding angle can be increased and a plurality of inserts can be easily fed into the folded sheet as close to the folding line as possible. This ensures that the input inserts are correctly positioned in a stack inside the finished envelope.

Lamply, the third roller is arranged with a movable arm.

Alternatively, the third roller is resiliently arranged on a fixed arm. 3 537 49 P5 s5 set a simple designed movable device is provided for the third roller and thus a user-usual enveloping device, which is easy to e.g. clean and service.

Preferably, at least the first roll comprises aluminum. Alternatively, at least the first roll comprises composite material.

Thereby a light roller is provided which means that it is easier to drive the whole folding device and easier to reduce the rotational speed of the first roller and thus 5N / a the rotational speed of the second and the third roller when feeding inlays.

The enveloping device can be connected to a printer comprising different paper trays intended for different paper sizes.

PS s5 sat, the present enveloping device can be effectively used with p5 pre-printed sheets and inserts and furthermore larger paper can be used as sheets for finishing envelopes and smaller paper can be used for inserts. This means that inserts do not have to be folded to fit in the finished envelope. Furthermore, an enveloping device is provided which in the sheet may be provided with a applied frame of toner when fed into the enveloping device, which frame can be used to provide an initial gluing of the envelope already in the folding device of the enveloping device. This entails a time- and cost-effective solution.

The above-mentioned objects of the invention have likewise been loaded by means of the method defined in the introduction according to the steps stated in claim 8.

Thereby a method is provided which quickly and easily finishes an envelope from a single sheet and positions inserts in a correct position inside the finished envelope.

Lamply, the method comprises the step of, after the step of reducing the rotational speed of the first roller, moving the third roller 5N / s so that a gap is created between the first and the third roller.

The folded sheet was allowed to open slightly and a plurality of inserts could be easily and efficiently fed into the folded sheet as close to the fold line as possible. This provides an input of inserts, which means that the inserts are correctly positioned in a stack inside the completed envelope. The step of feeding the at least one insert into the folded sheet involved feeding a plurality of inserts arranged in a bundle.

P5 s5 sat 5 a time-efficient method is provided to complete envelopes comprising inserts.

Lamply, the step of feeding the at least one insert into the folded sheet involved feeding a plurality of inserts one by one in succession.

P5 s5 sat 5 a method is established which ensures that each insert is positioned s5 as well as possible inside the finished envelope.

SUMMARY OF FIGURES The invention will now be explained with reference to the drawing, which schematically shows: Figs. 1a-1d a first embodiment of the invention having a folding device comprising a movably arranged third roller; Fig. 2 shows an enveloping device comprising the folding device shown in Figs. 1a-1d and transport paths for sheets and inserts; Fig. 3 shows a second embodiment of the invention having a folding device comprising a first and a second sensor and input of a plurality of inserts one by one; Figs. 4a-4b show a third and a fourth embodiment with respect to the movably arranged third roller; and Fig. 5 shows a fifth embodiment having three fixed rollers.

DETAILED DESCRIPTION OF EMBODIMENTS The invention will now be explained with the aid of embodiments. Details of the schematic drawings may appear reproducing the same type of detail but in different figures with the same reference numerals. Figures with details that do not have male display designations can also occur, but can d5 correspond to details that in other figures have male display designations. Details which are not relevant to the invention may have been omitted from certain figures for the sake of clarity.

Fig. 1a-id shows a folding device 2 of an enveloping device 1 which feeds and folds a sheet A in order to complete an envelope into which a plurality of inserts I are fed, which have been arranged in a bundle before the feeding takes place. The folding device 2 comprises three rollers 3 ', 3 ", 3— having an aluminum core and a casing surface 5 comprising a rubber material. A first roller 3' is driven by a motor M and a second 3" and a third roller 3 "rotate in cooperation with the first roller 3 'in a direction opposite to the first roller. line X between axis 7 'and axis 7 "intersects a tank second line Y between axis 7' and axis 7— perpendicular.

The folding device 2 also comprises a guide 9, which is arranged at an angle to the feed path 11 of the sheet A. The guide 9 also has an adjustable stop 13. In Figs. In Fig. 1a, the sheet A is first fed between the first roller 3 'and the second roller 3 "further to the guide 9 until the front edge 17 of the sheet A is in contact with the stop 13 of the guide 9. The sheet has a bend and when it the first roller 3 'and the second roller 3 "continue to feed the sheet A mediates the angular relationship between the sheet A, the three rollers 3', 3", 3 "and the guide 9 together with the abutting force of the stop 13 that the sheet A bends more and more. sheet A a bend which is fed in between the first roll 3 'and the third roll 3 "which provides a fold. P5 s5 sat, one and the same driven roller 3 'b5de fed forward the sheet A for bending and 5steaded folding in a subsequent step. By adjusting the guide 13 stop 13, it is possible to change the location of the folded envelope on the sheet A and thus what the finished envelope looks like. Fig. 1b shows how the sheet A has been folded and fed between the first roll 3 'and the third roll 3' until the sheet A has reached a predetermined position P. which is identified by a sensor 19 arranged downstream of the first roll 3 'and the third the roller 3 ". The sensor 19 is in communication with the motor M, which drives the first roller 3 'and at the predetermined position P for the folded sheet A, the sensor 19 communicates with the motor M and the rotational speed of the first roller 3' is reduced to zero, s5 Thus, the feeding of the sheet A stops both between the first roller 3 'and the second roller 3 ", and between the first roller 3' and the third roller 3". Fig. 1 c shows the sheet A at the predetermined position P and also shows how the third roller 3 'is movably arranged along a straight line L in the direction from the first roller 3'. When the rotational speed of the first roller 3 'has been reduced to zero, the position of the third roller 3 "is adjusted. , s That a gap 21 is created between the first roller 3 'and the third roller 3-. The gap 21 between the first roll 3 'and the third roll 3 "means that the folded sheet A can be opened slightly and the folding angle (the angle between the opposite halves of the folded sheet) becomes larger. fold the sheet A and the fed inserts I for a correct position as close to the fold line as possible. ), the position of the third roller 3 "is adjusted again so that the distance between the first roller 3 'and the third roller 3" is minimized. This is shown in Fig. 1d. Furthermore, the rotation of the first roller 3 'is started, used in the sheet A together with the inserts I being fed between the first roller 3' and the third roller 3 "further towards a sealing module (not shown).

Fig. 2 shows the enveloping device 1, which comprises, among other things, the folding device 2 and transport paths 23 ', 23 "for sheets A and inserts I. The enveloping device 1 is connected to a printer 25 comprising different paper magazines for different paper sizes (not shown). a larger paper size (eg A3) for the sheet A which is prepared into an envelope while a smaller paper size (eg A4) is used for the inserts I. PS s5 set, the inserts I can be fed directly from the printer 25 via the transport path 23 ". into the folded sheet A, without the inserts I having to be folded to fit in the folded sheet A. The enveloping device 1 comprises lasers (not shown), which identify which format the Sr p5 paper (sheets and inserts) is fed into the enveloping device 1. and which by a computer (not shown) direct the paper to the respective transport path 23 ', 23 ". Sheet A for finishing envelopes is transported along a first transport path 23' to the folding device 2 and fed between first roller 3 'and the second roller 3 ". The inserts I are transported along a second transport path 23 "and fed into the folded sheet A between the first roll 3 'and the third roll 3".

Fig. 3 shows a similar folding device 2 according to Figs. Arranged in parallel, where a first tank line X between shaft 7 'and shaft 7 "intersects a tank second line Y between shaft 7' and shaft 7" substantially perpendicularly. The rebate device 2 has a first sensor 19 'and a second sensor 7 537 49 19 ". The first sensor 19 'identifies a first for the folded sheet A predetermined position P' at which first predetermined position P 'the rotational speed of the first roller 3' is reduced in a first step. When the folded sheet A reaches a second, the folded sheet A reaches predetermined position P ", identified by the second sensor 19", the rotational speed of the first roll 3 'is reduced to zero so that the first roll 3' is stationary. The reduction of the rotational speed of the first roller 3 'at the first predetermined position P' for the folded sheet A facilitates the reduction of the rotational speed of the first roller 3 'at the predetermined position P "of the folded sheet A. Furthermore, Fig. 3 shows a plurality of inserts. In fed one by one in Fig. 4a-b, a third and a fourth embodiment show how the third roller 3 - Jr is arranged in a movable manner. Fig. 4a shows the third roller 3 "resiliently arranged in a straight line L ( see Fig. 1c) extended arm 27 comprising an electromagnetic device (not shown), which acts on a spring (not shown), used to move the third roller 3 - Wigs a straight line intersecting the shafts 7 'and 7 "1. The electromagnetic The control unit controls a third control unit 3 'to be moved when the rotational speed of the first roller 3' is zero. In Fig. 4b the third roller 3 'is arranged on a pivotable arm 29, which arm 29 comprises an electromagnetic device 31. The position of the movable arm 29 is adjusted by means of the electromagnetic device 31 and the third roller 3 is moved along a curved path so that the distance between the first roller 3 'and the third roller 3 "is adjusted so that the gap 21 is formed. .

Fig. 5 shows a fifth embodiment of the rollers 3 ', 3 ", 3" arranged so that a tank first line X between shaft 7' and shaft 7 "intersects a tank second line Y between shaft 7 'and shaft T" with an angle p5 85 degrees. All three rollers 3 ', 3 ", 3' in Fig. 5 are fixedly arranged in relation to each other so that a fixed gap 33 is provided between the first roller 3 'and the third roller 3". Furthermore, Fig. 5 shows a first guide 9 'comprising a stand 35, at which an adjustable stop 13' is arranged. The guide 9 'also comprises a movable arm 37 with which the sheet A is held against the post 35. The sheet A is fed in Fig. 5 between the first roller 3' and the second roller 3 "further to the guide 9 'towards the stop 13' of the guide. The sheet A has a bend and d'a the first roller 3 'and the second roller 3 "continue to feed the sheet A with the angular relationship between the sheet A, the three rollers 3', 3", 3 "and the guide 9 'that the sheet A continues to bend and finally is fed between the first roller 3 'and the third roller 3 "and folded. At the guide 9' there is arranged a sensor 19" which is in communication with the motor M which drives the first roller 3 '. The sensor 19 "identifies a predetermined position P '" for the folded sheet A, at which predetermined position P "the rotational speed of the first roller 3' is reduced. D5 the rotational speed of the first roller 3 'has been reduced, an insert I is fed into the folded sheet A A second guide 39 is arranged adjacent to the second roller 3 ", which guide 39 positions the insert I when feeding into the folded sheet A and prevents the insert I from being affected by the second roller 3". When the feeding of the insert I is finished, and the enveloping device 1 identifies that a new sheet A is on entry (this is not described in more detail and is not shown in the figures), the rotational speed of the first roll 3 'is increased and the sheet A with the insert I is fed between the first roll 3' and the third roll further towards a closure module (not shown) which has not been described further.

The invention is not to be construed as limited by the embodiments described above, but within the scope of the invention there are also other embodiments which likewise describe the inventive idea or combinations of the embodiments described can be assembled into one embodiment.

Of course, other examples of the invention may also exist, but should be interpreted by the appended claims. For example, the rollers may comprise other lampable materials than aluminum or composite and its mantle surface may be coated with other materials other than rubber materials. The number of submissions entered can vary and can be done either with submissions arranged in a bundle or one by one in succession. The rollers may likewise be arranged so that a tanked first line between the axis of the first roller and the shaft of the second roller intersects a tanked second line between the shaft of the first roller and the shaft of the third roller at an angle in the range 75-95 degrees, preferably 80-92 degrees. Furthermore, the fixed gap between the first roller and the third roller can be omitted. The third roller can thus be in engagement with the first roller. The guide can likewise have one or more discs in a non-metallic material. 9

Claims (12)

537 49 PATE NTKRAV Envelope device (1) comprising means for preparing envelopes from individual sheets (A), in which sheets (A) at least one insert (I) are fed, said means comprising a folding device (2) with at least three rollers (3 ', 3 ", 3") for feeding and folding said sheet (A), a guide (9, 9 ') arranged to effect a bending of said sheet (A), a stop (13, 13') in cooperation with said guide (9, 9 ') for determining where folding of said sheet (A) is to take place, characterized in that said folding device (2) comprises a first roller (3') which is driven by a motor (M) which first roller (3 ' ) in engagement with a second roller (3 ") feeds the sheet (A) to said guide (9, 9 ') and in cooperation with a third roller (3') folds said sheet (A). Envelope device (1) according to claim 1, used in the respective roller (3 ', 3 ", 3") each having a shaft (7', 7 ", 7"), the shafts (7 ', 7 ", 7") are arranged in parallel, where a first tank line (X) between shaft (7 ') and shaft (7 ") intersects a tank second line (Y) between shaft (7') and shaft (7 ') substantially perpendicular. Envelope device (1) according to claim 1 or 2, used in a sensor (19, 19 ', 19 ", 19'") can of the position of the folded sheet (A) which sensor (19, 19 ', 19 ", 19) '") is connected to the motor (M), so as to at a predetermined position for the folded sheet (A) (P, P', P", P '") reduce the rotational speed of the first roller (3') so that the folded sheet (A) can accommodate at least one insert (I). Envelope device (1) according to any one of claims 1-3, used in the third roller (3 '") is movably arranged relative to the first roller (3') to create a gap (21) between the first roller ( 3 ') and the third roller (3') for feeding the at least one insert (I) takes place. Envelope device (1) according to claim 4, van in the third roller (3—) is arranged p5 a movable arm (29). Envelope device (1) according to any one of claims 1-5, wherein at least the first roller (3 ') comprises aluminum. Envelope device (1) according to any one of claims 1-6, used in the envelope device (1) can be connected to a printer (25) comprising different paper magazines for different paper sizes, for example A3 and A4. A method of enveloping an enveloping device (1) comprising means for preparing envelopes from individual sheets (A), in which sheets (A) at least one insert (I) are fed, said means comprising a folding device (2) with at least three rollers (3 ', 3 ", 3—) for feeding and folding said sheet (A), a guide (9, 9') arranged to provide a bend of said sheet (A), a stop (13, 13 ') in cooperation with said guide (9, 9') for determining where in said sheet (A) folding is to take place, the van in said folding device (2) comprises a first roller (3 ') which is driven by a motor (M) which first roller (3 ') engages a second roller (3 ") and a third roller (3—), the method comprising the steps of: 1. feeding the sheet (A) between the first roller (3') and the second the roller (3 ") and on to the stop (13, 13 ') of the guide (9, 9'); 2. continue feeding between the first roller (3 ') and the second roller (3") so that the sheet (A) M .'s; 3. feed the sheet (A) between the first roller (3 ') and the third roller (3—) so that the sheet (A) is folded; - reducing the rotational speed of the first roller (3 ') at a position predetermined for the folded sheet (A) (P, P', P ", P"); 4. feed the at least one insert (I) into the folded sheet (A); Increase the rotational speed of the first roller (3 ') in order, in cooperation with the third roller (3 "), to discharge and complete the envelope comprising the at least one insert (I). A method according to claim 8, according to the method also comprising the step of following the step of reducing the rotational speed of the first roller (3 '): 1. moving the third roller (3 ") so that a gap (21) is created between the first roller (3 ') and the third roller (3—). A method according to claim 9, wherein the method further comprises the step of, after the step of feeding the at least one insert (I): 1. moving the third roller (3 '") so that the distance between the first roller (3') and the third roller (3 ") is minimized. A method according to any one of claims 8-10, used in the step of feeding the at least one insert (I) into the folded sheet (A) involved feeding a plurality of inserts (I) arranged in a bundle. A method according to any one of claims 8-10, used in the step of feeding the at least one insert (I) into the folded sheet (A) involved feeding a plurality of inserts (I) one after the other in succession. FIG. 'Id 537 49 9, 9 FIG 1c 113 537 49