EP0157350A2 - Pocket folding machine with manually adjustable pockets - Google Patents

Abstract

Compression folding machine with at least two pairs of folding rollers (W1, W2) and folding pockets (F1, F2). The adjustable paper stops (65, 66) of the folding pockets (F1, F2) consisting of stop rails are attached to endless tension members (67, 68, 69, 70), each of which can be driven in pairs by a manually operated drive shaft (79, 80) . Length scales (S1 to S8) are each arranged on scale tapes (48, 49), each of which is assigned to a folding pocket (F1, F2) and can be adjusted synchronously with the paper stops (65, 66) by the drive shafts (79 and 80). The scale bands (48, 49) are visibly housed in the housing through housing windows with reference markings. The desired setting of the paper stops (65, 66) can be done from the outside with the housing closed by means of rotary handles (81, 82). In order to facilitate the setting of the paper stops (65, 66), several length scales (S1 to S8), each assigned to a type of fold and an initial format, are arranged on each scale band (48, 49), which can be particularly emphasized by means of light sources.

Description

The invention relates to an upset folding machine with a plurality of pairs of folding rollers and folding pockets, the paper stops in the folding pockets consisting of stop rails and the paper deflectors of the folding pockets for determining the folding length and / or folding type which can be adjusted independently of one another, with length scales being provided for the manual setting of the paper stops.

In all known upset folding machines with manually adjustable paper stops in the folding pockets, the length scales required for the folding type-appropriate setting of the paper stops are each housed in a fixed manner in the folding pockets themselves.

They usually consist of a ruler, each with a natural millimeter scale and / or an inch or inch scale, along which the paper stops can be adjusted. The readjustment of the paper stops required for processing a new basic format length and / or a new fold shape is cumbersome and time-consuming insofar as this adjustment must be carried out directly on the stop rail representing the paper stop by its parallel displacement and special calculations are required for this purpose. if a corresponding table is not available from which the scale values to be set can be found. But even with such tables, the risk that incorrect values are read and set cannot be excluded as a common source of errors.

A compression folding machine with several pairs of folding rollers and folding pockets is already known, the paper stops and paper deflectors of which are automatically brought into their respective working position by means of a preprogrammable electrical control device, which includes a process computer, when the initial format of the folding material, the end format of the folding material and the type of folding an available input keyboard or via a data carrier and a data carrier reader can be entered into the process computer. Such control devices are, however, only suitable for large machines, which are generally used in paper processing plants, because these facilities are very complex and therefore expensive.

The invention is based on the object to improve and simplify a compression folding machine of the type mentioned in particular with regard to the manual adjustability of its paper stops in such a way that the paper stops can be moved by means of simple and easily actuated drive means and that the respective position to which the Paper stop must be set, depending on the basic format length of the folded material and the desired type of fold without arithmetic processes and / or the use of tables can be determined easily and without errors.

This object is achieved according to the invention in that the paper stops of the folding pockets are fastened to tension members, each of which can be driven in pairs by a manually operated drive shaft and that the length scales are each arranged on scale belts, each of which is assigned to a folding pocket and is synchronized by the drive shafts of the tension elements can be adjusted with the paper stops relative to stationary reference marks arranged in a housing window. The main advantage of this is that the paper stops can be adjusted from the outside without the need for an existing housing, which, for example, for soundproofing the folding pockets found encloses, must be removed or opened. In addition, the arrangement of the length scales, which are required for the correct setting of the paper stops, on scale tapes, which are moved together with the paper stops synchronously relative to a fixed reference mark, creates the possibility for each folding pocket or for the paper stop of each folding pocket to provide length scales matched to different fold shapes, by means of which finding the correct position on the relevant scale is made considerably easier.

In pursuit of this goal, in a further embodiment of the invention it is provided that a plurality of length scales are arranged in parallel next to one another with a matching zero mark position on the scale tapes, each corresponding to a specific type of fold, each length scale being reduced in relation to the natural millimeter scale in the scale that corresponds to the ratio corresponds in which the length of the folded goods section entering the first and / or the second folding pocket (F1 or F2) up to the paper stop is in relation to the basic format length of the folded goods; one can also say the ratio by which the basic format length of the folded material is shortened for a given type of fold by immersing it in the relevant folding pocket. However, this does not mean that there is a special scale for each adjustable type of fold on each scale band got to. Because with some different types of folds, the paper stop positions and thus the ratios by which the basic format length of the material to be folded is reduced are the same. Nevertheless, for reasons of clarity, it can be useful to provide a special scale for each type of fold on each scale band, even if two scales are the same. With the help of these scales, it is possible to achieve the correct setting position of the paper stops of both folding pockets corresponding to a particular type of fold in a simple manner by adjusting the scale corresponding to this type of fold until the scale value corresponding to the basic format length of the folded material determines the position of the reference mark occupies. This eliminates all the previously required computing processes. There is also no longer any need to use tables to set the paper stops, which means that the most important sources of error are switched off and the setting of the paper stops is simplified in an optimal way.

A further easing of conditions is achieved in that light sources are assigned to the individual length scales of the scale bands, which are arranged in the vicinity of a reference mark in or next to a housing window and can be switched on and off by electrical fold type selector switches assigned to a specific fold type. This allows the operator to operate the Recognize the desired fold type corresponding fold type selector switch based on the illuminating light source, which scale on each scale band is decisive for the paper stop setting to be made.

In order to obtain an arrangement which is favorable both in terms of construction and space and in terms of operation, a further embodiment of the invention provides that the housing window and the fold type selector switch are arranged in the cover wall of a desk-like housing core, in which the scale tapes running over two superimposed deflecting rollers are accommodated .

To achieve a particularly favorable arrangement of the light sources, which are intended to emphasize the individual scales, the scale band rollers arranged directly under the housing windows are hollow-cylindrical and made of transparent material, and there are each in these scale band rollers under the individual length scales of the likewise transparent scale bands Light sources arranged. With such an arrangement, the scales can be illuminated from the inside by the individual light sources and can thus be read better.

A further simplification of the operation is achieved in that for switching the Pa arranged in front of the folding pockets Pierabweiser electrical drives are provided in the form of electromagnets or servomotors that can be controlled by the Falzartwählschalter.

This makes it possible to effect the setting of the paper deflector corresponding to this type of fold at the same time as switching on the scale illuminations assigned to a particular type of fold.

• Fig. 1 eine Stauchfalzmaschine in perspektivischer Seitenansicht;
• Fig. 2 die geöffnete Stauchfalzmaschine der Fig. 1 in Draufsicht bei abgenommenen Gehäuseoberteil;
• Fig. 3 einen Schnitt III-III aus Fig. 2;
• Fig. 4 einen Schnitt IV-IV aus Fig. 2;
• Fig. 5 die auf einem der ersten Falztasche zugeordneten Skalenband angeordneten Längenskalen;
• Fig. 6 die auf einem der zweiten Falztasche II zugeordneten Skalenband angeordneten Längenskalen;
• Fig. 7 einen Schnitt durch eine Skalenbandwalze entlang der Schnittlinie VII-VII aus Fig. 3;
• Fig. 8 ein Blockschaltbild der elektrischen Steuereinrichtung für die den einzelnen Längenskalen zugeordneten Lichtquellen und die Stellmotoren für die Papierabweiser;
• Fig. 9 eine Tabelle der einstellbaren Falzarten.

An embodiment of the invention will now be explained in more detail with reference to the drawing. It shows:

• Fig. 1 is an upset folding machine in perspective side view;
• FIG. 2 shows the opened upset folding machine of FIG. 1 in a top view with the upper housing part removed;
• 3 shows a section III-III from FIG. 2;
• FIG. 4 shows a section IV-IV from FIG. 2;
• 5 shows the length scales arranged on a scale band assigned to the first folding pocket;
• 6 shows the length scales arranged on a scale band assigned to the second folding pocket II;
• 7 shows a section through a scale belt roller along the section line VII-VII from FIG. 3;
• 8 shows a block diagram of the electrical control device for the light sources assigned to the individual length scales and the servomotors for the paper deflectors;
• Fig. 9 is a table of the adjustable fold types.

In the upset folding machine shown in the drawing, there are in a roll frame 1 (FIG. 2) which, between two metal plates 2 and 3, has a rolling mill with an electric motor 4, which together with a first folding pocket F1 and a second folding pocket F2 in a two-part housing 7 is housed. The housing 7 consists of a base part 8 and a cover part 9 which are hingedly connected to one another by a hinge 10. The cover part 9 is designed in this way and the hinge 10 is arranged in such a way that the two folding pockets F1 and F2 are openly accessible in the manner shown in FIG. 2 when the cover part 9 is fully opened. To accommodate the roller frame 1, the base part 8 is provided in its center between two bottoms 11 and 11 'arranged immediately below the folding pockets F1 and F2 and provided with a shaft-like recess 12 (FIGS. 3 and 4), the front of each of which End walls 13 and 14 is limited. The two folding pockets F1 and F2 are offset in height with respect to one another, but are arranged with the same inclination directly above the bases 11 and 11 '. Correspondingly obliquely one above the other, the two pairs of folding rollers Wl / W2 and W3 / W4 are also offset in terms of height, such that the two folding rollers W2 and W3 form the first folding point I and the two folding rollers W3 and W4 form the second and last folding point II, while the the folding roller W2 contacting Wl folding roller forms with this a spot Einzu ^g e, through which the drawn material to be folded into the folding pocket either F1 or immediately is led to the folding point I. Arranged behind the folding point II is a pair of transport rollers 23/24, which transports the folded material leaving the folding point 11 onto a transport device 18 consisting of a plurality of transport belts 19, which is arranged in a triangular cutout 33 in the base part 8 of the housing 7. In the cover part 9 there is also a feed table 53 which slopes obliquely towards the feed point E, on which the folded material can be stacked and where it is introduced into the roller mill 1 by means of a sheet feeder.

The two folding pockets F1 and F2 each consist of two bar grids 61 and 62 or 63 and 64 arranged a short distance above one another, between which stop rails 65 and 66 are arranged, which serve as paper stops. These stop rails 65 and 66 are each adjustably connected to the lower bar grids 61 and 63 in the longitudinal direction of the bars. In order to be able to adjust these stop rails 65 and 66 to the desired position from the outside when the housing 7 is closed, without having to open the housing 7, the stop rails 65 and 66 are each on tension members in the form of two endless toothed belts 67 and 68 and 69 and 70 attached (see Figs. 2 and 3). These toothed belts 67 and 68 or 69 and 70 are each arranged on both sides of the folding pockets F1 and F2 and guided over drive wheels 71, 72 or 73, 74 and deflection rollers 75, 76 or 77, 78. The drive wheels 71 and 72 or 73 and 74 are each fixed in pairs in a rotationally fixed manner on a common drive shaft 79 or 80, which are each rotatably mounted in the base part 8 at the outer end of a folding pocket F1 or F2 and are also each provided with a rotary handle 81 or 82 . As can be seen from FIGS. 1 and 2, the two rotary handles 81 and 82 are each arranged on the outer side of the outer side wall of the base part 8, so that the drive shafts 79 and 80 can each be rotated with the housing closed. The arrangement of the drive wheels 71 to 74 and the deflection rollers 75 to 78 and the toothed belt 67 to 70 is in each case such that the respective upper runs of the toothed belt 67 to 70 run parallel to the plane in which the stop rail 65 or 66 in the Fold pocket Fl or F2 is adjustable.

So that the stop rails 65 and 66, once set to a desired position, cannot be adjusted automatically, the two drive shafts 79 and 80 are each provided with a device for fixing their rotational position. This device consists in each case of a disk 83 (see FIG. 2) which is fastened in a rotationally fixed manner on the drive shaft 79 or 80 and a knurled screw 84 which is threaded onto a threaded bushing 85 in a side bar 47 or in the wall section 32 of the base part 8 The outer surface of the disk 83 can be pressed in order to fix it against rotation. When the knurled screws 84 are loosened, the drive shafts 79 and 80 can be turned easily.

Instead, the rotary handles could also be provided with locking devices.

The base part 8 of the housing 7 laterally has two vertical intermediate walls 15 and 16, which each form hollow intermediate spaces 28 and 30 with vertical outer walls 15 'and 16'. In the intermediate space 30, toothed belt pulleys 34 and 35 are fastened on the drive shafts 79 and 80, which engage with toothed belt pulleys 38 and 39 via toothed belts 36 and 37, respectively. The toothed belt pulley 38 is seated on the hub 40 of a scale belt roller 41, which is rotatably mounted on a fixed pin 42 of the roller frame 1. The toothed belt pulley 39 is seated on the hub 43 of a scale belt roller 44, which is rotatably mounted on a fixed pin 45 of the roller frame 1. The two scale band rollers 41 and 44 are each arranged directly below the cover wall 46 of a housing core 31 and can be driven by the drive rollers 79 and 80 at the same peripheral speed as the drive wheels 71 and 72 or 73 and 74, which run via the toothed belts 67 and 68 or 69 and 70 adjust the stop rails 65 and 66 when the drive shafts 79 and 80 are rotated, so that synchronous operation is ensured between the toothed belt 67, 68 and the scale band 48 or between the toothed belt 69, 79 and the scale band 49.

There are scale belts on the scale belt rollers 41 and 44, respectively 48 and 49 are arranged, which are also stretched over deflection rollers 50 and 51, which are mounted on fixed journals 52 and 54 of the roller frame 1. As can be seen from FIG. 4, the journals 52 and 54 with the deflecting rollers 50 and 51 are each arranged in the lower region of the roller frame 1, so that the scale belts 48 and 49 can each have the sufficient length for the length scales to be accommodated thereon.

It can be seen from FIG. 2 that both scale bands 48 and 49 each have four length scales S1 to S4 or S5 to S8, which are shown in FIGS. 5 and 6 on an enlarged, natural scale and which are detailed below are explained in more detail.

• P/I - einfacher Parallelfalz mit innenliegender Oberseite
• P/A - einfacher Parallelfalz mit außenliegender Oberseite
• Z - z-förmige Falzform
• W - Wickelfalz
• DP - Doppelparallelfalz Um der Bedienungsperson leichter erkennbar zu machen, welche der Längenskalen S1 bis S8 für eine bestimmte Falzform beim Einstellen des Papieranschlages 65 oder 66 in der Falztasche Fl bzw. F2 maßgebend ist bzw. sind, ist jeder Längenskala S1 bis 58 eine Lichtquelle L1 bis L8 zugeordnet, die, wie in solchen Fällen üblich, aus Leuchtdioden bestehen können. Diese Lichtquellen L1 bis L8 können entweder unmittelbar neben den in der Deckelwand 46 über den Skalenbandwalzen 41 und 44 angeordneten Gehäusefenstern 57 bzw. 58 angeordnet sein. Zur Erleichterung des Ablesens sind die Gehäusefenster 57 und 58 jeweils mit Vergrößerungsgläsern 59 bzw. 60 versehen, welche an ihrer Unterseite jeweils die zum Ablesen erforderlichen Bezugsmarkierungen 88 und 89 in Form von Haarlinien aufweisen. Diese Anordnung der Lichtquellen L1 bis L8 in Vierergruppen neben den Gehäusefenstern 57 und 58 ist in den Fig. 1 und 4 dargestellt.

With the help of these length scales 51 to 54 and 55 to 58 on the scale tapes 48 and 49 and with paper deflectors 55 and 56 known per se, with which the folding pockets F1 and F2 can be closed if necessary, the five in the table in FIG. 9 should be in total specified different types of folds can be set, the individual names given in the "fold type" column having the following meanings:

• P / I - simple parallel fold with inside top
• P / A - simple parallel fold with external top
• Z - z-shaped fold shape
• W - wrap fold
• DP - double parallel fold In order to make it easier for the operator to recognize which of the length scales S1 to S8 is or are decisive for a specific fold shape when setting the paper stop 65 or 66 in the folding pocket Fl or F2, a light source L1 to L8 is assigned to each length scale S1 to 58 which, as is usual in such cases, can consist of light-emitting diodes. These light sources L1 to L8 can either be arranged directly next to the housing windows 57 and 58 arranged in the cover wall 46 above the scale band rollers 41 and 44. To facilitate reading, the housing windows 57 and 58 are each provided with magnifying glasses 59 and 60, respectively, which have the reference marks 88 and 89 in the form of hairlines on their underside. This arrangement of the light sources L1 to L8 in groups of four in addition to the housing windows 57 and 58 is shown in FIGS. 1 and 4.

Another possibility is indicated in FIG. 7, in which it is shown that the scale band rollers 41 and 44 are each made of glass-like transparent material consisting of cylindrical hollow bodies, in the cylindrical cavities 41 'and 44' of which the light sources L1 to L8 are each arranged in groups of four L1 to L4 and L5 to L8 immediately below the individual length scales S1 to S4 and S5 to S8 of the scale bands 48 and 49 in order to illuminate them from below. In this case, it is necessary that the scale tapes 48 and 49 are made of transparent material. For switching on and off These light sources L1 to L8, each in a combination corresponding to a particular fold shape, are provided with a total of five fold type switches A, A1, B, C and D, which are arranged between the housing windows 57 and 58 in the cover wall 46 and which are each only individually by locking devices, not shown can be operated.

With the help of these fold type selector switches A1 to D, two electric servomotors 90 and 91 (FIGS. 2 and 8) can also be controlled, which mesh with pinions 94 and 95 via gear wheels 92 and 93, respectively, on which the paper deflectors 55 and 56 supporting shafts 55 'and 56' are attached. As can be seen from Fig. 8, the fold type selector switches A, A1, B, C, D and the actuators 90 and 91 and the light sources L1 to L8 are interconnected by means of a logic circuit 96 in such a way that when the individual fold type selector switches A are actuated to D the correct light sources L1 to L8 light up and the paper deflectors 55 and 56 are brought into the respective functional position by the servomotors 90 and 91, respectively.

As can be seen from a view of FIGS. 5 and 6, the length scales S1, S2, S3 and S4 or S5, S6, S7 and S8 printed on the scale tapes 48 and 49 are different in scale. These scales are S1 to S5 by a factor or by a factor of the natural millimeter scale Reduced scale, which corresponds to the ratio in which, in the type of fold to which the relevant length scale S1 to S8 is assigned, the length of the folded material section entering the assigned fold pocket F1 or F2 is related to the basic format length L. Thus, the length scales S1 to S4 are printed on the scale band 48 assigned to the folding pocket Fl, while the length scales S5 to S8 of FIG. 6 are printed on the scale band 49 assigned to the folding pocket F2. According to the rule mentioned above, the length scale S1 assigned to the fold type P / I and thus to the fold type selector switch A is shortened by half compared to the natural millimeter scale, because with this fold form the folded material is halved by its basic format length L, i.e. by the amount L / 2 in the folding pocket Fl is immersed and is thereby shortened by half in the first folding point I. This means that, for example, the scale mark of the length scale S1 provided with the number 100 is at a distance of 50 mm from the zero mark of this scale. The folding pocket F2 is closed by the paper deflector 56.

The same scale of reduction also has the length scale S5 of the scale band 49, which is assigned to the fold type P / A (simple parallel fold with inner top side) and thus to the fold type selector Al, because this type of fold also halves the basic format length L of the folded material, but this time not in the folding pocket Fl but in the folding pocket F2. The folding pocket F1 is closed in this case by the paper deflector 55.

The two length scales S2 and S6, which are assigned to the fold type Z and thus the fold type selector switch B, are each reduced by a factor of 3 compared to the natural millimeter scale, because with this type of fold in both fold pockets F1 and F2 the basic format length L is shortened by a third takes place, ie the marking with the number 100 has a distance of 33.33 mm from the zero marking on these scales.

The two length scales S3 and S7 assigned to the fold type W (spiral fold) and thus to the fold type selector switch C differ from one another. With this type of fold, the folded material first runs into the folding pocket Fl by a length which corresponds to two thirds of the basic format length L of the folded material. The folded material is then immersed in the folding pocket F2, which corresponds to a third of the basic format length L of the folded material. Accordingly, the length scale S3 is shortened or reduced in the ratio of 1: 2/3 compared to the natural millimeter scale, and the length scale S7 is shortened or reduced in the ratio 1: 3, ie by a third. On the length scale S3, the marking marked with the number 100 has a distance of 66.666 ... mm from the zero marking, while on the length scale S7, the marking marked with the number 100 nete scale mark is in the same place as on the length scale S6. The scales S6 and S7 are therefore the same.

The length scales S4 and S8 assigned to the fold type DP (double parallel fold) and thus to the fold type selector switch D differ from one another. While the length scale S4 corresponds to the length scale S1, because with the fold type DP the folded material first enters the folding pocket F1 by half the basic format length L, the length scale S8 is reduced in a ratio of 1: 4 compared to the natural millimeter scale because the fold material with this fold type runs into the folding pocket F2 by a length which corresponds to a quarter of the basic format length L. With the length scale S8, the scale mark with the number 100 is at a distance of 25 mm from the zero mark.

The particular advantage which is achieved by these length scales S1 to S8, which are reduced according to the rule mentioned above, on the scale tapes 48 and 49 is that the length scales S1 to S8 assigned to the desired type of fold are in any case set to the basic format length L of the folded material must or can be, so that the operator does not have to perform any arithmetic operations, but only needs to know the basic format length L of the folded material. For this reason, the common DIN formats A3, A4 and A5 are indicated by special brands on the individual length scales S1 to S8. By pressing the one you want The type of fold selector switch A to D assigned to the fold type is indicated to the operator by the light sources L1 to L8 which light up accordingly, according to which of the length scales S1 to S8 the setting of the two scale bands 48 and 49 and the paper stops (65, 66) by correspondingly turning the drive shafts 79 and 80 has to be done. Since the two paper deflectors 55 and 56 are automatically set with the aid of the fold type selector switches A to D and the logic circuit, the operator does not need to make any settings in this regard. Of course, it is also possible to make the paper deflectors 55 and 56 manually adjustable if, for example, one wants to do without the servomotors 90 and 91 and their gears for cost reasons.

For the sake of completeness, it should also be mentioned that in the present exemplary embodiment the light sources L1, L2, L3 and L4 are each individually assigned to the length scales S1, S2, S3 and S4 and that, analogously, the light sources L5, L6, L7 and L8 are assigned to the length scales S5 to 58 are assigned.

Claims (6)

1. Upset folding machine with at least two pairs of folding rollers and folding pockets, the paper stops of which are made of stop rails in the folding pockets and whose paper deflectors in front of the folding pockets for determining the folding length and / or folding type can be set independently of one another, with length scales being provided for the manual setting of the paper stops that the paper stops (65, 66) of the folding pockets (F1, F2) are attached to tension members (67, 68, 69, 70), each of which can be driven in pairs by a manually operated drive shaft (79, 80) and that the length scales (51 to S8) are each arranged on scale tapes (48, 49), each of which is assigned to a folding pocket (Fl or F2) and synchronized with the drive shafts (79, 80) of the tension members (67, 68, 69, 70) Paper stops (65, 66) can be adjusted relative to reference markings (88, 89) arranged in a stationary manner in a housing window (57, 58). 2. Compression folding machine according to claim 1, characterized in that on the scale bands (48, 49) a plurality of length scales (S1 to S8) are arranged in parallel next to each other with a matching zero mark position, each of a specific type of fold (P / I, PA, Z , W, DP), with each length scale (S1 to S8) compared to the natural millimeter scale is reduced in the scale that corresponds to the ratio in which the length of the folded material section entering the first and / or the second folding pocket (Fl or F2) up to the paper stop (65, 66) is relative to the basic format length (L). 3. Compression folding machine according to claim 2, characterized in that the individual length scales (S1 to S8) of the scale bands (48, 49) are each associated with light sources (L1 to L8) which are in the vicinity of a reference mark (88, 89) in or next to arranged in a housing window (57, 58) and can be switched on and off by electrical fold selector switches (A, A1, B, C, D) assigned to a specific fold type. 4. Compression folding machine according to one of claims 1 to 3, characterized in that the housing window (57, 58) and the folding type selector switch (A to D) in the cover wall (46) of a desk-like housing core (47) are arranged, in which the over each two superposed rollers (41, 44, 50, 51) running scale bands (48, 49) are accommodated. 5. Compression folding machine according to claim 2 or 4, characterized in that the respective scale belt rollers (41, 44) arranged directly under the housing windows (57, 58) are hollow are cylindrical and made of transparent material and that in these scale band rollers (41, 44) under the individual length scales (S1 to S8), the likewise transparent scale bands (48, 49), the light sources (L1 to L4 or L5 to L8) are arranged. 6. Compression folding machine according to one of claims 1 to 5, characterized in that electric drives in the form of electromagnets or servomotors (90, 91) are provided for switching the paper deflectors (55, 56) arranged in front of the folding pockets (Fl, F2), which can be controlled by the folding goods selector switches (A, A1, B, C, D).

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