WO1993008111A1

WO1993008111A1 - Folding machine

Info

Publication number: WO1993008111A1
Application number: PCT/EP1992/002326
Authority: WO
Inventors: Walter Wienen
Original assignee: Krauss U. Reichert Gmbh + Co. Kg Spezialmaschinenfabrik
Priority date: 1991-10-12
Filing date: 1992-10-09
Publication date: 1993-04-29
Also published as: DE4133919A1

Abstract

A folding machine (10) for webs of fabric (30) has a folding carriage (18) movable in relation to a folding table (12), a fabric roll support mounted on the folding carriage (18), a fabric advancing unit (36) mounted on the folding carriage and provided with an advancing roller (40) which is actively driven in accordance with the travelling speed of the folding carriage (18), as well as a winding roller (38) that holds the web of fabric (30) wound around the advancing roller (40) and a folding unit (52) mounted on the folding carriage (18) and vertically adjustable by means of a vertical adjustment arrangement. In order to improve such a folding machine so that slip during the advance of the web of fabric (30) by the fabric advancing unit (36) is reduced as much as possible, the winding roller (38) is actively driven in accordance with the travelling speed of the folding carriage (18).

Description

Laying machine

The invention relates to a laying machine for fabric webs, comprising a laying carriage which is movable relative to a laying table, a fabric roll storage on the laying cart, a fabric specification unit held on the laying vehicle with a specification roller which is actively driven in accordance with the traveling speed of the laying vehicle and with a wrap which holds the fabric web in wrap with the specification roller roller and a laying unit that is height-adjustable above the laying table by means of a height adjustment device and held on the laying carriage.

Such a laying machine is known for example from DE-PS 34 33 425.

Although such a laying machine creates the possibility of applying the fabric web with a more or less large wrap angle to the feed roller, depending on the type of fabric web there is still a slip between the feed roller and the fabric web to be given to the laying unit, which is caused by Corresponding setting of the transmission ratio between travel speed and peripheral speed of the input roller must be corrected.

The invention is therefore based on the object of improving a laying machine of the generic type in such a way that the slip when specifying the fabric web in the fabric presetting unit is as small as possible. This object is achieved in that the wrap roller is actively driven according to the speed of the laying car.

The solution according to the invention thus also provides for an active drive of the wrapping roller in addition to the drive of the feed roller, so that the wrapping roller is the first to act actively on the fabric web and pull it away from the fabric roll storage, for example, and together with the feed roller to preset the web for the Laying unit contributes.

This makes it possible to enlarge the area which actively drives the fabric web and is wrapped by the fabric web, so that the slip between the driving surface and the fabric web is reduced.

It is particularly advantageous if the wrapping roller is driven at a constant speed ratio to the predetermined roller, so that both act together on the fabric web in the same way.

There is the possibility that one of the two rollers has a greater peripheral speed than the other, corresponding to the slip with the web of material that exists with it.

However, an embodiment is particularly advantageous in which the wrapping roller is driven in such a way that its peripheral speed essentially corresponds to that of the input roller. There are many different options with regard to the type of drive of the wrapping roller. For example, it is possible to provide a separate drive for the wrapping roller.

In the embodiment in which, however, there should be a constant speed ratio between the input roller and the wrapping roller, it is also advantageous if the wrapping roller is coupled to the input roller via drive elements.

The coupling between the wrapping roller and the specification roller preferably takes place via a frictional connection between the drive elements.

A particularly advantageous and structurally particularly simple to implement embodiment provides that the presetting roller carries on one side a drive ring which drives the wrapping roller.

However, it is even more advantageous if the presetting roller carries a drive ring on both sides for driving the wrapping roller.

Accordingly, it is additionally advantageous if the wrap roller also carries a drive ring on one side or preferably on both sides.

The dimensioning of the drive rings takes place in accordance with the desired speed ratio between the specification roller and the wrapping roller. As already explained at the beginning, the solution according to the invention creates the possibility of increasing the area over which the fabric web is driven, this being dependent on the wrap angle range, that is to say the range over which the specification roller and the wrap roller act of the fabric. It is particularly advantageous in the solution according to the invention if a wrap angle range of approximately 300 ° or preferably more can be achieved.

A particularly advantageous embodiment of the solution according to the invention takes advantage of the additional drive of the wrapping roller by the fact that the feed roller and the wrapping roller have coverings with different friction properties for fabric webs, so that the fabric feed unit as a whole can be designed so that it can also be used A very small amount of slip can be achieved in a wide variety of different types of fabric webs, namely in that the covering of the predetermined roller is matched to one extreme case of a fabric web and the covering of the wrapping roller is matched to another extreme case of a fabric web, and thus all the webs of fabric are located between these extreme cases Properties with little or no slip from the material specification unit can be specified to the laying unit.

An expedient development of the solution according to the invention provides that the pre-setting roller can be moved from a working position into a threading position in order to enable threading of the fabric web and the desired wrapping of the pre-setting roller and the wrapping roller in a simple manner. A construction in which the threading position and the working position are arranged on opposite sides of the pre-setting roller is particularly favorable, in particular in the threading position there being an intermediate space between the pre-setting roller and the wrap-around roller, which allows easy threading, for example by a hanging down one Fabric panel, allowed.

Furthermore, when a working position and a threading position are provided, it is advantageous if the wrapping roller is coupled to the specification roller in the working position and there is no longer any coupling in the threading position, that is to say the specification roller can be freely rotated.

A particularly advantageous implementation option for the arrangement of a looping roller which can be moved back and forth between a working position and a threading position provides that the looping roller is pivotably mounted on a lever system.

In particular in an embodiment in which the drive elements enter into a frictional connection, the lever system must be designed such that it guides the drive elements relative to one another in such a way that in the working position a line of contact of the drive elements lies close to a connecting straight line between axes of rotation thereof. This ensures that a large contact force between the drive elements can be achieved with little force on the lever system. For simple operation of the lever system according to the invention, this can expediently be operated by an actuating element. For this purpose, the actuating element is preferably arranged on a side of the feed roller and the wrapping roller facing away from the laying carriage.

The operation of the lever system is particularly simplified in that the lever system translates a path of the same into a larger path of the wrapping roller when the actuating element is operated, so that the wrapping roller can be moved over a large distance by a slight displacement of the operating element.

Furthermore, in an advantageous embodiment of a laying machine with a wrapping roller that can be moved between the working position and the threading position, it is provided that the wrapping roller can be fixed in the working position.

The wrap roller is preferably fixed in the working position by a locking device.

Such a locking device is preferably provided in an exemplary embodiment which has the lever system in such a way that it acts on the lever system, the locking device being operable for releasing, in particular by means of the actuating element.

In addition, a preferred exemplary embodiment provides that the fabric control unit forms a unit with the laying unit and, in particular, is held on the laying carriage in a height-adjustable manner with this laying unit. Further features and advantages of the invention are the subject of the following description and the drawing

♦ representation of some examples.

The drawing shows:

Figure 1 is a schematic perspective side view of an embodiment of the laying machine according to the invention.

Fig. 2 is a partial section along line 2-2 in Fig. 1;

Fig. 3 is a partially cutaway plan view in the direction of arrow A in Fig. 1;

Fig. 4 is a section along line 4-4 in Fig. 3;

5 shows a section along line 5-5 in FIG. 4.

An embodiment of a laying machine according to the invention, designated 10 as a whole in FIG. 1, comprises a laying carriage 18 which can be moved on a laying table 12 in a laying direction 16 parallel to a table surface 14, this laying carriage 18 preferably having rollers 20 runs on a rail 22 held on the laying table 12.

The laying carriage 18 comprises a laying carriage frame 24, which has a fabric roll support 26 on an upper side, which in turn carries a fabric roll 28 with a fabric web 30 to be laid out. The fabric roll carrier 26 is preferably rotatable relative to the laying carriage frame 24 about a vertical central axis 32.

The fabric web 30 drawn off from the fabric roll 28 runs over a deflection roller 34, which is still rotatably mounted on the fabric roll carrier 26, and then into a fabric presetting unit, designated as a whole as 36, in which the fabric web 30 via a wrapping roller 38 and a specification roller 40 S-shaped, wherein this default roller 40 is driven via a connecting gear unit 42 and a gear unit 44 held on the laying carriage in accordance with the speed of the laying carriage 18 in the laying direction 16.

To drive the laying carriage 18 in the laying direction 16 and thus also to drive the gear unit 44, a drive designated as a whole with 46 is provided, which on the one hand the rollers 20 and on the other hand the gear unit 44, for example via belt drives 48 or 50, drive.

Starting from the material specification unit 36, the material web 30 runs into a laying unit, denoted as a whole by 52, which has, for example, a laying blade 54 with which the material web 30 falling from the input roller 40 is deflected and on the table surface 14 in the form of a Layer 56 is laid out, with several layers 56 being placed one on top of the other and forming a layer package 58. A knife box 60, for example, is provided for cutting off a laid out layer 56, which is in a parallel to the table surface 14, but perpendicular to Laying direction 16, transverse direction 62 can be moved over the table surface in order to separate the fabric web 30 transversely to its default direction 64, in which it runs out of the laying shovel 54 onto the laying table 12.

As shown in FIG. 2, the material specification unit 36 on the laying carriage frame 24 can be adjusted in height by means of two guides 68 arranged in the transverse direction at a distance from one another, preferably on outer sides 66 of the material specification unit 36, and in a height direction 70 that is perpendicular to the table surface 14 slidably guided. The guides 68 have, for example, two guide strips 74 forming a guide groove 72, which are held on the laying carriage frame 24, and two guide rollers 76 running in each guide groove, which are held on the fabric specification unit 36.

In order to be able to move the fabric setting unit 36 in the height direction 70 to different positions and fix it in this position, two lifting chains 80 are provided in the transverse direction 62, preferably at a distance from one another in the region of the guides 68, each of them starting from the fabric setting unit 36 with which they are firmly connected, run upwards away from the table surface parallel to the height direction 70, are guided there via a deflection roller 82 to a drive wheel 84 and from there downwards via two deflection rollers 86 and 88, the deflection roller 88 being vertically below the Deflection roller 82 is arranged so that each lifting chain in turn extends from the deflection roller 88 to the material specification unit 36, with which it is firmly connected. Each of the lifting chains 80 runs thus as a closed run in a plane parallel to the laying direction 16 and height direction, the deflection rollers 82 and 86 being rotatably arranged on the laying carriage frame 24. The two drive wheels 84 for the two lifting chains 80 are held firmly on a drive shaft 90 which is also rotatably mounted on the laying carriage frame 24, the drive shaft 90 being drivable by a gear motor 92 for raising and lowering the material specification unit.

As shown in FIGS. 1 and 3, the drive roller 40 is connected to a drive gear 100 for driving it. The drive gear wheel 100 is arranged on an extension 102 of a shaft of the drive roller 40 and thereby drives the drive roller 40. This drive gear 100 is in turn driven by an intermediate gear 104, which is comprised by the connecting gear unit 42 and is therefore driven by the latter.

In the working position shown in solid lines in FIGS. 3 and 4, the wrapping roller 38 stands on a side of the setting roller 40 facing away from the laying carriage frame 24 and also on a side of the setting roller 40 also facing away from the laying shovel 54 and is driven by the setting roller 40.

For this purpose, the presetting roller 40 is provided on its two opposing end faces with a vulcanized collar 108 projecting radially beyond a lateral surface 106 of the presetting roller, which is seated in a groove 110 of a retaining disk 112, each of which is provided by a front end part 114 the default roller 40 is included. These two end-side end parts 114 hold a tube 116 between them in a coaxial alignment and form the default roller 40 with this tube 116.

In the working position, the wrapping roller 38 rests on these two Vulkollan rings 108 with drive rings 120 likewise arranged on the end face thereof and projecting radially over a lateral surface 118 of the same, these drive rings 120 against the Vulkollan rings 108 acting as an output element, as later are described in detail, pressed and thus represent a force-locking, rotationally fixed connection between the two.

The radii of cylindrical outer surfaces 122 of the Vulkollan rings 108 and cylindrical outer surfaces 124 of the drive rings 120 are dimensioned such that the outer surface 106 of the input roller 40 and the outer surface 118 of the wrapping roller 38 rotate as if they abut each other and roll on each other, this means that the rotational speeds of the lateral surfaces 106 and 118 are always identical.

In order to be able to bring the material web 30 into wrap with the wrap-around roller 38 and the default roller 40, the wrap-around roller 38 can be moved from its working position shown in solid lines to a threading position shown in broken lines, as shown in broken lines in FIG. 4 , in which it lies on a side of the feed roller 40 facing the laying carriage frame 24 and frees an intermediate space Z between itself and the feed roller 40, through which the fabric web 30 falling freely from the deflection roller 34 can be passed. For this purpose, the wrap roller 38 is rotatably held in the region of its end faces 126 on an angle lever 128, this angle lever in turn being pivotable about a pivot point 130, so that an axis of rotation 132 of the wrap roller 38 when the engaging roller 38 is pivoted from the working position into the on position ¬ thread position describes a circular arc around the pivot point 130. The fulcrum 130 lies on a side of an axis of rotation 134 of the pre-setting roller 40 facing the laying carriage frame 24. The fulcrum 130 is also positioned such that in the working position of the wrapping roller 38 a line of contact 136 of the outer surface 122 of the vulcanized ring 108 and the outer surface 124 of the drive unit lies around 120 near or at an intersection of a connecting straight line 138 between the axes of rotation 132 and 134 of the wrapping roller 38 or the pre-setting roller 40 with these outer surfaces 122 and 124.

In order to pivot the wrap roller 38, on the angle lever 128, specifically on the leg 140 articulated at the pivot point 130, preferably approximately in the middle thereof, a thrust lever 144 acts on a pivot point 142, which has an actuating tube at its front end facing away from the pivot point 142 146 wears. This thrust lever 144 is freely pivotable about the pivot point 142 relative to the leg 140 of the angle lever 128. The push lever 144 is also rotatably mounted on a pivot lever 148 with a pivot point 150, which lies on a side of the actuating tube 146 facing the specification roller 40, and this pivot lever 148 is in turn on its side Pivot 150 opposite end at a pivot point 152 on the outside 66, formed by a side wall of the fabric specification unit, pivotally mounted, in the same way as the angle lever 128 with the pivot point 130.

In the working position, the actuating tube 146 is at its lowest point, namely on a side of the setting roller 40 facing away from the laying carriage frame 24, so that the actuating tube 146 projects beyond the side wall 66 of the material specification unit 36 for free access by an operator. The actuating tube 146 can now be pivoted upward and in the direction of the laying carriage frame 24 in order to thereby also pivot the looping roller 38 from the working position into the threading position. The pivot point 148 guides the pivot point 150 around an arc around the pivot point 152, so that the push lever 144 pivots the pivot point 142 in the direction of the laying carriage frame 24 and thus also moves the angle lever 128 in this direction, so that thereby the wrapping roller 138 with its axis of rotation 132 describes a circle around the pivot point 130, which lies on the side wall 66, in the direction of the laying carriage frame 24, and thus the wrapping roller 38 can be pivoted from the working position into the threading position.

The lever system formed by the angle lever 128, the push lever 144 and the pivot lever 148 and designated as a whole by 154 thus serves to arrange the actuating tube 146 in the working position in a region which is favorable for access and also one when the transition from the working position to the threading position of the actuating tube 146 is still to be traversed to translate larger path to be traveled by the wrapping roller 138, in order on the one hand to achieve simple and inexpensive actuation of the wrapping roller via the actuating tube 146 and on the other hand to position the wrapping roller 138 in the threading position with the largest possible gap Z between it and the specification roller 40.

To support the pivoting movement of the wrapping roller 38 from the working position into the threading position, an annular spring 156 which is effective between the angle lever 128 and the push lever 144 is arranged in the region of the pivot point and which is firmly connected to the angle lever 128 by a leg 158 and with the other leg 159 with the push lever 144. The spring 156 is in its relaxed position when the wrapping roller 38 is approximately midway between the working position and the threading position and is pretensioned when the threading position or the working position is approached, in order to later move out when the thread is moved back to support the pivoting of the wrapping roller 138 in these positions.

In order to be able to fix the wrapping roller 38 in its working position, a locking device designated as a whole with 160 and shown in FIG. 5 is provided, which comprises a locking pin 162 which is carried by a holder 164. This holder 164 is in turn held on a flat 166 of a sleeve 168 of the actuating tube 146. The actuating tube 146 together with the sleeve 168 can be rotated coaxially to its axis 170 with respect to the thrust lever 144 for pivoting the locking pin. This is achieved in that the sleeve 168 is rotatably mounted on a mandrel 172 which is fixedly connected to the thrust lever 144 and is arranged coaxially to the axis 170, the mandrel 172 extending into the sleeve 168 starting from the thrust lever 144 and with an inner end 174 engages in a holding tube 176 which extends to the mandrel 172 seated on the opposite side and firmly connects the two mandrels to one another. The holding tube 176 is surrounded by the actuating tube 146.

Furthermore, the sleeve 168 is provided with an annular recess 178, in which sits on the mandrel 172 a helically wound spring 180, which is firmly connected to the sleeve 168 at one end 182 and firmly in the push lever 144 at another end 184 is anchored and thus acts on the sleeve 168 in a direction of rotation 186 moving the locking pin 162 into its locking position.

As a counterpart to the locking pin 162, the locking device 160 comprises a locking lug 188 with an inlet slope 190 and a locking slope 192, against which the locking pin 162 rests in the working position of the wrapping roller 38 and holds it in the working position. The locking lug 188 extends in the direction of the laying carriage frame 24.

The locking lug 188 is in turn connected via a bracket 194 to a cross strut 196 which connects and stabilizes the two side walls 66 of the laying unit 36 in the transverse direction 62. Such a locking device 160 is preferably arranged in the region of both sleeves 168 of the actuating tube 146 in order to ensure that the wrapping roller 38 with both drive rings 120 rests on both Vulkollan rings 108 of the specification roller 40 with frictional engagement and is driven.

According to the invention, the preselection roller 40 is coated with natural rubber foam, so that its outer surface 106 has, for example, good frictional contact with clothing, while the wrapping roller 38 is coated with PVC adhesive so that its outer surface 118 can make good frictional contact with the lining material .

Claims

PATENT CLAIMS

1. Laying machine for fabric webs, comprising a laying trolley that can be moved relative to a laying table, a fabric roll storage on the laying trolley, a fabric feeding unit held on the laying trolley with a feed roller that is actively driven in accordance with the travel speed of the laying trolley and with a fabric web wrapped around the A wrapping roller holding the feed roller and a laying unit which is height-adjustable above the laying table by means of a height adjustment device and is held on the laying carriage, which means that the wrapping roller (38) is actively driven in accordance with the travel speed of the laying carriage (18).

2. Planting machine according to claim 1, characterized in that the wrapping roller (38) is driven at a constant speed ratio to the feed roller (40).

3. Laying machine according to one of the preceding claims, characterized in that the wrapping roller (38) is driven so that its circumferential speed corresponds to that of the setting roller (40).

4. Laying machine according to one of the preceding claims, characterized in that the wrapping roller (38) is coupled to the feed roller (40) via drive elements (108, 120).

5. Planting machine according to claim 4, characterized in that the drive elements (108, 120) are frictionally coupled to one another.

6. Planting machine according to claim 4 or 5, characterized in that the feed roller (40) carries a drive ring (108).

7. Laying machine according to one of claims 4 to 6, characterized in that the wrapping roller (38) carries a drive ring (120).

3. Laying machine according to one of the preceding claims, characterized in that the fabric web rests on the feed roller (40) and the wrapping roller (38) with a wrapping angle range of at least approximately 300 °.

I. Laying machine according to one of the preceding claims, characterized in that the feed roller (40) and the wrapping roller (38) have coverings with different friction properties for fabric webs.

10. Laying machine according to one of the preceding claims, characterized in that the wrapping roller (38) can be moved from a working position into a threading position.

11. Laying machine according to claim 10, characterized gekenn¬ characterized in that the wrapping roller (38) is coupled to the feed roller (40) in the working position and decoupled in the threading position.

12. Planting machine according to one of claims 10 of 11, characterized in that the wrapping roller (38) is pivotally mounted by a lever system (154).

13. Planting machine according to claim 12, characterized in that the lever system (154) guides the drive elements (108, 120) relative to one another in such a way that in the working position a contact line (136) of the drive elements (108, 120) is close to one Connecting straight line (138) lies between axes of rotation (130, 132) of the same.

14. Planting machine according to claim 12 or 13, characterized in that the lever system (154) can be operated by an actuating element (146).

15. Planting machine according to claim 14, characterized gekenn¬ characterized in that the lever system (154) when operating the actuating element (146) translates a path of the same into a larger path of the wrapping roller (38).

16. Planting machine according to one of claims 10 to 15, characterized in that the wrapping roller (38) can be fixed in the working position.

17. Planting machine according to claim 16, characterized gekenn¬ characterized in that the wrapping roller (38) can be fixed in the working position by a locking device (160).

18. Planting machine according to claim 17, characterized in that the locking device (160) can be actuated for release by means of the actuating element (146).