DE2952772C2 - Method and device for automatic all-round upholstery of chair seats and the like. - Google Patents

Description

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Type of the main claim and a device according to the type of the first device claim. Such a method is known from DE-AS 25 17 388. The known method consists in that A cover material that has already been brought into the shape of a cover cap is placed on the lower stationary molding will. Then a hold-down frame is moved from above and into the space between This frame and the upholstery fabric is the carrier or seat with assigned upholstery by hand inserted. The cushioning material is then preset by moving a pressure ram down Compressed way and therefore pretensioned. With an upward movement you can The previously provided slide frame is then the fabric edge border area between the hold-down frame and brought this slide frame to drain, so that the cover fabric cap now Surrounds support and upholstery on all sides. Spring elements arranged on the hold-down frame can be used for ensure a wrinkle-free drainage of the cover cap. Then be horizontal to the center side U-shaped slider moved so as to fold the cover edge inwards until it fits into a groove on the carrier can be glued in. In this known upholstery process, the cover cap is only turned around The carrier and the upholstery are turned over, whereupon the cover material is placed on the compressed upholstery material after it has been released also assumes a tense appearance, since the pressure effect of the cushioning material is now on affects the upholstery fabric.

Known disadvantage with the known upholstery process the fact that the upholstery fabric is not really stretched, and neither is it it is ensured that there is a wrinkle-free fit with even tension, especially in the curve area Da results in the tensioning effect of the upholstery fabric on the function of the upholstery material previously compressed for this purpose based, can be carriers that have no or insufficiently compressible underlay material, cannot be covered in this way, as the cover fabric must remain loose.

In a similar way, also by squeezing them together of upholstery material, the tensioning effect is known from DE-GbmS 18 57 771 mechanical auxiliary device for covering the backs of armchairs and armchairs. The well-known Auxiliary device is designed in a cross shape; each individual workstation has a lower one Negative shape of the cut of the upholstery fabric, on which it is then placed and pulled down by hand folded, Hakefileislen having pressure flaps is incorporated. Then the Chair seat, i.e. generally the furniture frame lifted into the shape and with the help of a pressure cross, Consisting of cross and longitudinal struts in connection with tie rods and toggle clamps, together pressed. The press flaps that have kept the upholstery folded down so far are then swiveled up; they lay on the seat lower surface, releasing an intermediate space, so that in this intermediate space the edge of the upholstery fabric can be nailed on.

The entire upholstery process takes place with this auxiliary device so that only after complete At the end of the work, it can be determined visually whether the cover slip is wrinkle-free everywhere. Even Here, the appearance of the benign fabric, which is stretched over the upholstery material, is achieved by the fact that a earlier pressure is removed from the cushion element.

In both known devices that enable the upholstery and upholstery of seats or carriers no real and tight tensioning and covering of the upholstery is achieved, something similar to the subtle one and the difficult work of a fully manual upholstery operation, one hand at a time Cover fabric is held against the tension and attached to the edge of the carrier, at the same time through the Tensile effect must be prevented that the cover fabric pulls across and in not yet attached areas general wrinkles appear. The known devices contain particularly for corner areas and curves no indication of how to proceed for crease-free laying. It has not been recognized that one flawless upholstery or even just covering support parts then not in a satisfactory manner can be realized if you do without actually stretching the cover fabric and the effect a tense appearance only from the restoring pressure of a previously compressed upholstery part relates.

Generally, for the simplest part of an upholstery process, semi-automatic pressing devices are used known that have a lower plate, on the reverse, i.e. with the back to the top of the carrier, the elastic intermediate layer and the upholstery fabric are placed. From above will then a second parent, who is attached to a gallows-like The arm is hanging, move it down until it has the entirety of the seat support, upholstery and cover fabric can squeeze. The cover fabric can then be attached to the seat support in a substantially relaxed manner, by gradually turning them over by hand and then tipping the turned over areas with a high-speed nailer or staple gun. After returning the upper pressure plate upwards, this relaxes Upholstery, as far as the cover fabric allows; Here, too, the tensioning effect is derived from the restoring force of the Polsters won.

With such a semi-automatic upholstery process, as is also known with the earlier than Assumed upholstery devices, disadvantageous that the operator involved does not at the same time see how the upholstery is actually on the seat support Intermediate layer of an elastic part rests, which is particularly important for patterned fabrics Meaning can be.

The present invention is therefore based on the object of the known manual, if necessary to improve semi-automatic Polsler processes in connection with suitable auxiliary equipment, that the entire upholstery and covering process including an actual tensioning of the cover on all sides around the carrier is carried out fully automatically.

The invention solves this problem with the characterizing features of the main claim or the first device claim and has opposite the previous options have the advantage that any carrier or documents, even without an intermediate Polslerieil quickly, accurately and evenly with one Upholstery fabric can be obtained, whereby manual intervention is no longer necessary.

The invention enables an individually coordinated covering of carriers, with tensioning elements. which are arranged peripherally around the wearer, each of which is detected and effectively held in place at the edge of the cover fabric that extends over the wearer , whereupon a real tensioning effect is exerted on the cover fabric when the relative movement is carried out, which in addition to its stress on elasticity also exerts pressure on a possibly existing upholstery part. This pressure effect on the upholstery part takes place via the tensioned cover fabric, that is to say proceeding therefrom, wherein in an advantageous embodiment, when a certain tension is exceeded, cover fabric edge parts can pass through. In this way, it is possible in particular to take account of the specific requirements in the corner areas of the carrier and to stretch the cover fabric without creases and everywhere with the same tension even on carriers with complicated shapes. Even in the complete absence of an elastic padding underlay, the present invention succeeds in properly and tightly stretching and securing a cover material on a part to be covered.

By those listed in the subclaims Measures, advantageous developments and improvements of the invention are possible. This is how it works by the features of dependent claims 2 and 3 relating to the method, the edge of the cover fabric at the same time downwards while maintaining the tensioning effect on the underside of the carrier to turn over, releasing the carrier side edge of the underside part, so that at this point at next inwardly displaced gripping beaks attack points the staple mouth can shoot the cover fabric.

The subject matter of claim 5 enables the rotatable mounting of the carrier with the Ripping beaks holding the cover fabric in the tensioned position, so that the edge of the cover fabric is stationary Tacker can be shot all around.

Through the measures of claim 6, the combined movement possibility of each grasping beak is achieved first to clamp the upholstery fabric edge area and then the overall inward movement of the grasping beak is ensured

The subject matter of claim 7 bt in advantageous Way aimed at achieving a double function of the prykeepers, whereby the closing movement of the grasping jaw and the subsequent inward pivoting movement of a common one Working cylinder are effected.

The subjects of dependent claims 8, 9 and 10 are on further advantageous embodiments of the gripping 'beak mechanism in their actuation by a Working cylinder directed, with a locking of the mouth openings of the toggle lever structure Grasping rods! in the holding position for the edge of the upholstery fabric is achieved.

The dependent claim 11 allows as advantageous Design the retraction movement of each grasping spike during the sparing by simultaneously with a

to inwardly directed pressure effect on each grasping beak this experiences a height shift, so that it slides on the carrier and its supporting table in the manner of a cam effect until it is finally locked.

In an advantageous embodiment according to dependent claim 13, the gripping jaws can also be used under Dispensing with individual working cylinders together to bring about the inwardly directed clamping movement be operated.

Further refinements of the grasping beak mechanisms can be found in subclaims 14 and 15 remove.

The subject matter of dependent claim 16 in conjunction with dependent claim 17 facilitates the through the grasping beaks caused the tensioning process by placing a counter-pressure plate on part of the cushion takes over the pressure to be exerted, but the counter-pressure plate is transparent for visual control is.

The subjects of subclaims 18 and 19 relate in advantageous embodiments to the Rotary movement of the table including the jaws relative to a stationary nailing machine, At the same time, it is possible to trim excess fabric after nailing. Of the The nailing apparatus is guided by the carrier in its all-round movement via sliding rollers.

The subjects of subclaims 20 to 24 relate to alternative storage options for the Claws, especially in a simplified version, while the dependent claims 25, 26, 27 the storage of the high-speed nailer by at least two Focus on the free rotation so that the high-speed nailer does not need to run out of height or a can follow the lateral extension of the carrier during its rotational movement without resetting.

Finally, the subjects of subclaims 19, 28 and 29 each relate to details when guiding the tacker with its relative rotation around the table for fastening the edge of the cover material as well as the storage of the knife, which cuts the edge channels after nailing Subclaims 30 and 32 finally relate to a possible embodiment of the present invention Invention to the effect that the tensioning elements can also be needles that grasp the cover fabric, pierce it and then stretch it over the cushion with a relative movement.

Embodiments of the invention are in Drawing shown and explained in more detail in the following description. It shows

F i g. 1 a first exemplary embodiment of an automatic Upholstery device in a schematic cross-sectional view,

there Fig.2 and 3 further embodiments of a automatic potting device. also in the cut and partly only as partial representations from which the various movement mechanisms for the gripping

claws emerge in their relative movement to the table supporting the seat support,

4, 5a and 5b show a further exemplary embodiment the grasping claws,

6 and 6a show an embodiment of a high-speed hailer and

F i g. 7 shows an exemplary embodiment in a perspective overall view of the invention for upholstering and covering chair seats.

The basic idea of the present invention consists in the part to be upholstered, that is to say usually consisting of a seat support made of stable material. Wood. Plastic or the like, the elastic upholstery layer • the intermediate layer, for example made of foam or the like. And itm upholstery material with the upholstery material upwardly translucent onto a holder, hereinafter referred to as a table, with the edges of the upholstery material in open mouth openings of Griffschnä- % t \ n are introduced or practically fall into them when the cover material is subsequently put on. Thereupon the grasping beaks close, for example caused by a suitable signal gate of the operator, and the rest of the upholstery process runs fully automatically, because after closing the grasping beaks they move downwards and forwards due to a relative displacement between the table serving as a support and the grasping beaks , so perform a total of a downward shifting movement at an angle and take the upholstery material that has been placed on top and grasped • tit. so that it flies tightly on the intermediate cushion layer.

It is now possible to break the fastening process if, for example, a The inclination of the upholstery fabric is to be determined if this is required by the corresponding samples of the upholstery fabric is. As soon as the gripping jaws have reached their end position, preferably in contact An automatic nailing device or stapler can be used in a stop-forming edge area of the table crane and fasten the cover fabric in the edge area by shooting nails • with the staples ies seat support, for example on the lower concealed Surface or outside on the edge as desired.

At the same time as this work step, a suitable masking tape can also be • fed, if desired • nd be shot at the same time. This also leads to the cover tape and the connection It makes sense to do this in the same work step and with the same high-speed nailer or stapler.

The stapler can run around the table; • In some cases, however, this is designed to be stationary, and The table rotates, whereby the stapler makes sense is performed in that it scans the circumference of the upholstered seat support, for example with the help of a suitable Roll so that the upholstery fabric is always nailed on the desired same place and at the same distance from the circumferential outer edge of the seat support he follows. The rotation and also the nailing process are preferably carried out by a few degrees of angle via a complete rotation of 360 °, for example by about 400 "C; then the Tacker, caused by limit switches or the like from the seat support, and it becomes what in the drawings is not shown, an automatic Schneidf-inrichtüfig supplied, which - still with retracted, on Stop of the grasping beaks - the upholstery fabric between the grasping beaks and the nail trace trimmed when the table is returned to its starting position. Since this is the table again by more than one turn, namely again by those already mentioned above for example, moved back 400 °, the entire edge of the upholstery is securely separated so that After the end of this process step, too, a perfectly padded and trimmed one End product results.

ίο The following with reference to Fig Each automatic upholstery device to be described generally comprises a device to be upholstered the part, this usually consisting of a rigid rigid support or seat support, which is on this

is applied upholstery and the holder that carries the upholstery material and fixes these parts, hereinafter referred to as Table 2 referred to, and distributed over the circumference of the table or the support 3 for the cushion 4 fine predetermined number of grasping beaks 5 for gripping and tensioning the cover fabric. Between the Table 2 on the one hand and the jaws 5 on the other hand, a relative movement can be carried out, which the Covering the part to be upholstered with the upholstery fabric is used, the edge of which is in the grasping beaks is held.

It is understood that the following with reference to FIG. Detailed explanation of an embodiment given in FIG. 2 is to be understood only as an example, since the various movement sequences, possibilities of Storage for the individual components and their special training within the scope of the invention The purpose to be achieved can be varied and, in this respect, also be arbitrary. Of the grasping beaks 5 is in the representation of Fig. I shows only a single grasping beak, although over the scope of the Support 3 or table 2 distributes a larger number of such in their storage and in their drive as well as in Their mobility comparable, preferably identical gripping beaks are available, for example 20 pieces or 40 pieces, possibly more, depending on the size of the part to be poistered.

Since, as will be explained in more detail below, the Outer contour of the table 2 in operative connection with the dimensions of the carrier 3 fixed on this, For example, seat support when it comes to upholstering a chair seat, are decisive for the relative movement or, more precisely, the pivoting movement of the various gripping jaws for the tensioning of the cover material, the table 2 on the rotatably mounted main shaft 6 is exchangeable, preferably arranged so that it can be fastened by means of a central screw 7

In the illustrated embodiment, the table 2 comprises a lower Lagerpia tte 2a and an upper, template-like holding part 2b for the. placed, to be poistered seat support 3, wherein screw openings 8a, 86 can be provided, which serve to accommodate screws, not shown, with which the respective seat support 3 is attached to the table 2, for example by passing the screws through these holes 8a, 80 and in Fastening openings are screwed into the seat support, which are used for fastening to the chair frame after the seat support has been removed. It goes without saying, however, that the part to be upholstered can also be secured and fixed on the table 2 by other suitable fastening means, for example by hydraulics or

pneumatically operated gripping claws, by suitable fits or other means.

The shaft 6 carrying the table 2 is held in a suitable manner in a stationary bearing 9 and is rotatably supported therein. The bearing 9 comprises a bearing bush 10 with two end-side bearings IIs, i \ b for the shaft 6, namely in the illustrated embodiment with ball bearings. To fix the ball bearings and to axially secure the shaft 6, retaining rings or snap rings 12 are provided. The bearing bush 10 is held in a stationary carrier 11 of the machine frame, not shown further.

The storage for the jaws 5 consists initially of a plate 13 of a suitable shape, namely such a form that the circumferential distribution Ib the gripping jaw 5 on the seat support 3 follows the shape of the seat support. This means that with an oval or elongated seat support, the bearing plate 13 for the grasping beaks 5 also has approximately such a shape, but of course it can take any other form and is therefore also interchangeable with Adaptation to the most diverse parts to be upholstered.

In the illustrated embodiment, it is assumed that the bearing plate 13 is annular; she is - in general terms - stored so that the gripping jaws 5 carried by it relative - upwards and down - with respect to table 2 can move. During this vertical movement, the shift End areas of the grasping beaks then at the same time still inward, creating an inwardly directed Pivoting movement results.

In the embodiment shown dvtn is the Bearing ring 13 for the grasping jaws 5 attached to a bell-shaped holding arrangement 14, which consists of a cylindrical pipe part 15 and a further bearing plate 16 consists. The bearing plate 16 is of a Sliding sleeve 17 held; all parts 15, 16, 17 are arranged concentrically to the shaft 6 and can be relative to this a vertical shifting movement carried out -to ren. The drive for the shifting movement takes place with the help of at least one hydraulic or pneumatic working cylinder 18, which with its piston rod 18a is fixed on the outside of the bearing plate 16 and at its other end at 19 of another Bearing plate 20 is held, which is held in a support sleeve 21 which extends along the shaft 6 through Move arbitrary engagement and can be fixed by means of an adjusting screw 22

It goes without saying that this bearing arrangement for the gripping jaws 5 is only exemplary; In fact can the whole storage and its drive below the bearing bushing 10 of the main bearing 9 on the Attack shaft 6 or on another stationary, but then concentric to shaft 6 rotatable holding part attack. It is also possible to build the tubular part 15 from struts that the bearing ring 13 with the bearing plate 16 connect. However, it is recommended that the bearing ring 13 be attached to the bearing ring 13 in a suitable manner further storage 14 to be releasably attached, for example by screwing, by a snug fit and the like, since the bearing ring 13, as already mentioned, should be replaced if the part to be upholstered is changed is

The working cylinder 18 is used to generate the common friction shift between the table 2 on the one hand and the entirety of the gripping jaws 5 on the other hand, the stroke to be carried out, as can be seen, requires an adjustment, depending on the height of the intermediate layer 4 forming the actual cushion, the desired tension, the elasticity of the intermediate layer and the resilience of the cover material, etc. In order to be able to make this setting, the position of the bearing sleeve 21 on the shaft 6 can be adjusted, for which the fixing screw 22 engages in a longitudinal groove 22a of the shaft which so specifies the extreme stops for the height adjustment when setting the stroke. The two extreme positions of the bearing sleeve 21 are shown in dashed lines at 2V and the sliding sleeve 17 at 17 '.

Each gripping beak 5 consists of a relatively stationary beak part 5a and the separate one for this purpose Beak part 56, which is hingedly attached to the main beak part 5a at 23, for example by means of two lateral lugs 23a, 236 (not visible; and an axis 24. The main beak part 5a extends from its articulated mounting at 5e in a bearing bush 25 fixed to the bearing ring 1J to after above in the area of the table 2, where the main part of the beak in a laterally outwardly bent tip 25 passes. The tip 25 forms with an opposite tip 26 of the movable beak part 5fc Gripping or clamping element, which grips an assigned edge of the cover material and can clamp it firmly.

Since a seat support 3 does not necessarily have to be a flat plate in a horizontal plane, but can have a corresponding vertical range, at certain points so what For example, the rule is, is arched, is a height adjustability of the individual gripping jaws 5a, which are attached circumferentially to their bearing ring 13 next to each other, desired so that the actual Tensioning and covering process each individual gripping beak the upholstery material around a given and pulls in the same amount and clamps the beak main part to achieve this height displacement 5a a journal 27, dtr, mounted movably in the bearing bush 25, preferably with a polygonal External profile to achieve security against rotation in a corresponding cavity in the main part of the beak is displaceable and therefore arranged adjustable in height. For fixation, a Be screwed in the locking screw, which can be screwed against an elongated hole in the main part of the beak or which The locking screw is screwed into a threaded opening shown at 28 in the main beak part and presses against the pin 27.

Alternatively, however, it is also possible here to adapt ar the different carrier forms for the upholstery cover, for each of which there are different bearing rings 13 with a possibly different number of grasping beaks 5a are required, layers with to select a corresponding vertical run, the outer edges of which are therefore in different horizontal planes and these bearing rings 13 in a predetermined Position to attach to the main bearing 14 for the grasping beaks. In this case one results Automatic height compensation in the event of deviations in the part to be upholstered, e.g. seat support 3 from one given horizontal plane.

The pivotability of the movable beak part 5b about its bearing axis 24 takes place with the greatest opening width, the distance of which is given by the course of the dashed snout tip 5b ' . Stop, which is formed by two further lugs or brackets 292, 29b fastened on both sides of the main part of the beak

(not visible). However, these brackets 29a, 29b are stored between them at their end remote from the main part of the beak articulated two more bends! 30a, 30b (not visible), which in turn hold a type of pressure or sliding roller 31 between them, for example by means of an acis 32, so that this pressure roller can also be rotated with respect to the swivel bracket 30a, 30b is. As indicated in the dash-dotted illustration at 33, there is a pressure roller or pressure piece 31 on this the piston rod 34 of a hydraulic or pneumatic working cylinder 35 attached to a cantilever 36 at 37 directed obliquely outward and fastened to the bearing ring 13 or to the bearing bush 25 is pivotably mounted

The following function of the in FIG. 1 shown upholstery machine. The starting position of the gripping jaws 5s with their bearing 14 is shown in dash-dotted lines, i.e. in a vertically upwardly displaced position with maximum retraction of the piston rods 18a into the respective working cylinder IS- In this A.usfuhrungsbeispie! therefore the gripping jaws 5 are vertically displaceable relative to the stationary table 2. Since in this starting position the working cylinders 35 have drawn in their respective piston rods 34 at the same time through a correspondingly coordinated control - it goes without saying that each gripping jaw is assigned its own working cylinder 35 -. is the pressure roller 31 in the ir. The drawing shown, folded down position, in which the movable beak part 5b is released. so that this assumes its maximum opening manner with respect to the stationary main part of the beak and. as shown at 5b 'in dashed lines, either on the pressure roller 31' or on its mounting.

After then an operator applies the cover fabric indicated at 38 to the padding layer 4 and the upholstery edge, as indicated at 39, into that of the two Schnabeltei'cn mouth opening formed is inserted. after an arbitrary activation of a start command are initially - and the rest of the process can then be program-controlled fully automatically - the working cylinders 35 actuated, which extend their piston rods 34 and therefore the on their swivel brackets 30 <? stored Press pressure roller 31 upwards, during this movement the pressure roller 31 on the facing Surface of the movable beak part 5b expires and the mouth opening closes more or less suddenly, so that the fabric edge 39 is clamped and clamped will. At the same time, this toggle-like actuation of the swivel bracket 30a results in a particularly strong and effective locking, because the swivel brackets run in the find position 30a. 30b then approximately parallel to the bearing bracket 29a. 29b and approximately perpendicular to the longitudinal extension Ji, movable Schnabcltcils. so this mi 'stronger Lever force and without the possibility of loosening is pressed against the main part of the wrench. Here can it is understood that the main part of the beak does not evade this pressure exerted by the working cylinders 35, since at 40 there is a contact with the outer edge of the seat support 3.

As soon as the mouth openings of the gripping jaws are closed and the cover fabric edge clamped is. move the working cylinder 18, the storage 14 of the gripping jaws ϊλ and the entirety of the gripping jaws after unlcn. but the working pressure of the work cycle

10

15th

20th

25th

30th

35

40

45

50

60 linder 35 on the pressure roller 31 to maintain the locking and to cause the inward movement of the gripping jaws when pivoting about the bearing pivot point 24 is now maintained. This means that the upper edge 41 of the beak tip of the main beak part 5a has a cam track-like contour or is designed as such, and the downward and inward movement of the individual gripping beaks 5 results from the interaction of this NocKenkontur 41 with the respective, serving as a plunger or stop Edge of the seat support results. It is then also understood that the cam contour 41 can have any desired shape in order to derive any desired tensioning movement with respect to the upholstery material from the relative displacement between the grasping beaks and the table 2. It is thus possible, for example, to initially bring about an outward movement of the grasping beaks, which is then followed by a rapid inwardly directed overturning movement

The movement of the grasping beaks is ended when the outermost beak tip slides over the edge of the seat support during the vertical displacement movement and then, with practically no further vertical movement. Swing the gripping beaks inwards quickly until the cam contour 41 of the beak tip 25 of the main beak part 5a comes into effect again and deliberately rests against a counter surface 42, which is specified by the table 2., more precisely, by its edge, which in this embodiment runs obliquely inward . It can also be seen that it is this last, essentially horizontal, pull-in movement inward, which causes the final tensioning process, so that the stop 42 given by the table 2 is of considerable importance for the entire upholstery tensioning process

In fact, so it results for the whole of that Tensioning of the upholstery material swiveling movement of the gripping beak a cam control, according to this essential feature of the present invention, the actual control surfaces for this cam-controlled movement are made available by the seat support 3 itself and / or from the table 2 which is matched to this and which supports it. In other words, the seat support 3 is each time its own template for the pivoting movement, which insofar and necessarily is based on this coordinated. It goes without saying that this unique, cam-controlled sliding projection results in this In the course of the grasping beak movement, there is no wear, for example in the area of the seat support or its edge channel th

In an advantageous embodiment, after the final pivoting of the gripping jaws 5 and after contact with the table edge 42, the relative displacement between table 2 and gripping jaws 5 then runs again in the opposite direction, namely as follows. that by a short reversal of the table with the lower, exposed edge of the seat support 3 lowered or the Greitschnäbcl 5 are pressed with their upper tips against this Rahdkante, so that the reference slump area captured by the grasping beaks firmly against the lower, not from the table covered and therefore free Randkanienfläche the Silzträgers is printed. This then facilitates the work of the stapler or the stapler, which engages approximately in the area marked with Λ and on this

Place continuously connects the upholstery material with the seat support over the circumference. Of course, this connection can, if desired, also be made on the side edge of the seat support at A ' . This subsequent nailing or stapling process is then preferably carried out in such a way that the edge region itself of the seat support 3 again forms a guide to position the stapler or stapler as it passes over the circumference of the seat support.

It goes without saying that the distance control of the stapler for the fastening process can also be carried out in other ways, for example by limit switches, contactless scanning, by using light transmitters and receivers or the like; However, it is preferred, not least for reasons of simplification and for reasons of cost, to move the tacker 42, which is held on a pivotable bearing arm 43, along the circumference of the seat support 3 with the aid of a sliding roller guide 44. This sliding roller guide 44, indicated schematically in FIG. 2, can comprise a horizontal and a vertical sliding roller which runs along the surfaces A and A ' in FIG. 1 can slide on the seat support and be rigidly connected to the bearing arm 43 of the tacker, which in turn is biased laterally and upward by suitable spring means. As a result, the edge of the seat support itself determines the position of the stapler mouth and the distance that the ring of nails or staples occupies from the edge 40 of the seat support 3 inwardly jo.

There is also the subsequent trimming or cutting process protruding upholstery material can be carried out in a similar manner, the stapler 42 is only replaced by a cutting device, for example with η a rotating knife - after pivoting away of the stapler 42 and its bearing arm 43 - basically the seat support 3 serves three times as his own cam control for the motion sequences

a) relative movement table to gripper beaks when w tensioning of the upholstery material.

b) Guiding the stapler when nailing the cover fabric and

c) Guiding the trimming tool when trimming the upholstery fabric.

The representation of Fig. 1 shows that during the nailing and cutting process after inwardly swiveled gripping jaws 5 hold the cover fabric firmly in its tensioned state, as they are with rotate the table around the main shaft 6. The storage> o 14 for the gripping jaws 5 is axial on the shaft 6 movable. but non-rotatably arranged.

The illustration in FIG. 2 shows how further ahead already mentioned, a different movement mechanism for driving the grasping beaks. the >> Storage of the 45 carrying the individual handles Bearing ring 46 can here again have a on the Shaft 6 sii / endc sliding sleeve 47 done with any vertical view. The bearing ring moves 46 to unien. then comes a pivotable at 48 m> mounted lever 49 on a stationary pressure plate 50 and pulls under the action of a spring 51 on his the other end is fixed, the entirety of the grasping jaw 45 in addition to the relative vertical movement to the table inside. The beak closing movement takes place separately for each beak via one pneumatic working cylinder 35 ', which has a toggle lever Cle'itslückmechanisrnus with its piston rod actuates the movable beak part and with its other end on a (double-sided) bearing bracket 52 is fixed, which is attached to the main beak part and also the point of articulation for the Forms spring 51 and the pivot bearing for the movable beak part

The embodiment of FIG. 2 has a special feature in that the outwardly directed pivoting range of the grasping beak is limited and predetermined by fixed stops 53a, 53b each downwards on the edge of the table or upwards in the shape of a hook on the main part of the beak. This variant can be important in the case of a very high resilient intermediate layer 4, in which a larger amount of material has to be drawn in for tight upholstery.

In the embodiment of FIG. 3 is every Greifschntivl itself designed as a rigid toggle lever which is pivotally mounted at 54 on the bearing ring 55 and with his a leg 56 experiences a resilient support at 57, which is in the downward direction Relative displacement of the jaws with respect to the table, intermediate plate and upholstery cover can amplify, so that the retraction and pivoting movement controlled by the seat support in a cam-like manner Reaching beaks are made in a fixed system.

It can be seen that the formation of the movement mechanisms for the closing movement of the gripping jaws on the one hand or for effecting the relative displacement Tisch / Rifschnabel, on the other hand, are quite accessible to the most varied of solutions that The invention is therefore also not restricted by such different solutions.

In addition, it would also be conceivable to effect a combined closing and pivoting movement the grasping beaks in that one is all movable Beak parts is provided with an inner hole cut-out detecting ring plate. which are also stationary can be stored, but preferably rotates with the table and grasping beaks and is spring-loaded upwards or an upward preload with the aid of pneumatic or hydraulic working cylinders attained. If one pushes such a perforated ring plate upwards, then the individual ones close first Pry bills. and a subsequent downward movement of the grasping jaws relative to the table 2 then causes the outer surfaces of the movable beaks to further accumulate on the inner ring cutout such a control plate, d ··. standing under an upward pressure the Sch / nbel can then finally push completely inwards.

F. A further advantageous embodiment of the present invention can then exist that one for relief of the tensioning process from above another one in hers Rhythm of movement, of course, on the counterpressure plate coordinated with the remaining components the cushion lowers so that the pulling-in process, at least initially, without any stronger counter-tension des Berngssiuifs can take place. This CJcgendruckplat part is preferably made of a transparent material, for example an acrylic glass (Plexiglas), so that a visible control of the position of the seat cover During the automatic upholstery process is possible.

Since because of the controlled by the carrier himself and of course on the rotary movement of the table 2

coordinated nailing process of the stapler this nailing The nailing can take place at the same time as it is particularly precise and flawless and with a precise edge distance also be a decorative nailing, for whatever purpose the use of particularly shapely and aesthetic coordinated fasteners makes sense. In this case it is also not necessary to use at the same time to add a border or piping to the nailing.

It goes without saying that the introduction of the ι ο Upholstery edges can also be carried out fully automatically into the open mouth openings of the grasping beaks can, for which basically only one on the respective scope of the carrier and the padding coordinated bell-like printing form is required, rä which can be lowered from above with its edge into the open mouth openings and the above Introduce fabric edge areas into the open beaks.

The edge centering of the grasping beaks achieved by the support 3 for the upholstery and by the table 2 5 ensures that the upholstery fabric is drawn in particularly flawlessly with a constant, predetermined tension and a uniformity that is difficult to achieve even with careful manual work.

Another embodiment of a grasping beak variant is shown in FIGS. 4 as well as 5b and 5a. In this embodiment, the gripping jaws are not necessarily controlled in their sequence of movements in a cam-like manner by the edge of the carrier or the table; the gripping beak 60 shown in Figure 4 comprises on a bearing arm 61 two scissors-like s, ^ h opening and closing beak parts 62a, 620, both of which can be rotated about a common pivot point 63; ere beak member 62a fixedly mounted: ^- preferred but the u. In this exemplary embodiment, the control of the beaks can basically take place as already explained above, that is to say using working cylinders which engage at suitable points; But it is also possible to give the beaks a bias by pressing them towards each other by a spring wire 64 wound about once or twice around the pivot point or pivot pin 63, the opening movement of the beaks being effected by suitably rounded cams Buttocks 65a. <65b engages a pressure piece, a pressure rod or some other element 66 and presses it inwards in accordance with the arrow C , as a result of which the gripping jaws 62a, 62 £> are necessarily opened. The pressure piece 66 can be part of a circumferential ring structure which simultaneously acts on all gripping jaws arranged around the respective table. The illustration in FIG. 4 shows one of the gripping jaws in the open standby position; it can be seen that in this case, upholstery fabric that has already been roughly cut to size can be placed particularly comfortably on the carrier, with the upholstery fabric edge areas automatically falling into the open jaws. The beaks are then closed by removing the pressure piece 66 or in some other way; the upholstery fabric is clamped at its edge and there is the already mentioned relative displacement between the carrier on the one hand and the ring of the gripping jaws arranged around the carrier on the other hand in the vertical direction. The illustration of FIG. 5a shows the gripping jaw of FIG. the grasping beak bites into its assigned edge area of the cover material and during the relative displacement, either by pivoting or by an inward movement of the grasping beak carrier 6t into the new position at 61 ', the tensioning process of the cover material takes place, with the grasping beak being guided under the carrier and tension and hold the cover fabric so that the holding nails can shoot in at the now exposed edge of the cover fabric above the carrier of the tacker.

In addition, it is possible with each embodiment of the beaks, when placing the cover fabric, if done by hand, the upholstery fabric in at least some of the jaws by hand Closing these gripping jaws to fix already, which is the case in the embodiment of FIG. 1 special can be implemented well, since the closing movement of the grasping jaws is carried out by a toggle-like locking mechanism Pivoting movement is effected. Therefore, the grasping beaks then also remain closed, in particular if a certain pre-pressure is already present on the respective lock cylinder 35.

Based on the illustration of FIG. 6 will be described in more detail below on the structure and mode of operation of the Upholstery fabric after the tensioning process through the gripping bars! on the wearer, either on its exterior vertical edge or a high-speed nailer or stapler attached to a lower ring-shaped edge piece received. This stapler is shown in FIG. 7 in its folded-up, non-invasive position behind the control panel 67 and denoted by 68.

So that the staple gun with its closing opening directly on the edge of the upholstery fabric to be attached and naturally runs along the edge of the carrier, the tacker is often freely movable. The in F i g. 6 in its side view and partially shown in section and partially in plan view consists of the actual shooting apparatus 69 and its storage, which is designed so that the shooting apparatus 69 to at least one axis is held freely pivotable. In the illustrated embodiment, the Shooting apparatus 69 both around a horizontal axis, shown here by a bearing shaft 70, and around freely pivot a vertical axis that is aligned in the embodiment shown in FIG. 6 and is matched to the muzzle opening 71 of the shooting apparatus 69, insofar as it is formed by an in a pivot bearing 72 held pivot pin 73. For a better understanding of the suspension of the staple gun initially to the embodiment of FIG. 6a detailed. You can see that a rear Bearing guide 74 of the high-speed nailer or stapler 68 around a pivot point 75 of at least one, preferably but is pivotably supported by two stationary supports 76. with another locking device is provided, consisting of an angle plate 77. which has an elongated hole 78 and a locking screw 79 can be pivoted vertically and a locking device 80 at its rear end has, which with a protruding bolt in a Hallsöffnurig 81 of the rear position guide 74 of the Tackers 68 can intervene. One poses this way First of all, a horizontal position aligned approximately at the height of the table or the edge of the carrier of the stapler 68 so that it can be locked by the locking 80, 81 when approaching the carrier * the edge is perfectly guided horizontally and positioned

is then but then the lock 80, 81 is abandoned, because as soon as the staple gun on the Rests on the edge of the carrier edge, he follows this in a manner to be described below and the rigid Horizontal locking via the angle plate 77 must be released. Hence the locking device 80, 81 also preferably air-pressure operated (see the compressed air supply hose 82) and is switched in such a way that after the tacker mouth touches the edge of the carrier, the horizontal positioning via the lock 80, 81 by withdrawing the pin from the locking opening 81 is released (the pin is not shown in the drawing).

The bearing guide 74 holds and stores the actual shooting apparatus 69 as follows. In FIG. 6 it is shown that this bearing guide 74 is designed roughly in the manner of a hollow tube, for example a square hollow tube, and at least one horizontal, but preferably two horizontal, sliding guides 83 for it mentioned shaft 70. A double-sided working cylinder 4 engages on the bearing guide 74, one end of which is fixedly mounted at 85 so that the bearing guide can be pivoted vertically upwards or downwards or experiences a correspondingly directed tension during operation. The shaft 70 itself, which in turn supports the further bearing elements and the actual nailing apparatus 69, is preferably horizontal with the aid of a further hydraulic or pneumatic working cylinder 36! displaceable, which is fixedly attached to the bearing guide 74 and engages with its piston rod at 87 on the shaft. At this point, i.e. at its front end, the shaft 70 has a pivot bearing 88, preferably based on one or more ball bearings 89a, 89b, so that a lower lever arm 90 can rotate around the shaft via this pivot bearing 88, i.e. performs a free movement in the direction of arrow D; this free rotational movement therefore enables a horizontal pivoting movement of the actual nailing apparatus 69, which can thus follow every vertical stroke of the carrier edge area. At the end of the lever arm 90, the second, already mentioned pivot bearing 72 is then arranged, on the pivot shaft 73 of which a further, rearward-facing lever 91 is fastened, for example by means of bolts 92. Only this second lever 91 then supports the actual nailing apparatus 69, for example by being clamped in at the rear end of the lever via bolts 93 on both sides. It can be seen that in this way the tacker has a large number of degrees of freedom in its movement. The tacker can be displaced in one direction forwards and backwards by mounting its shaft 70, namely in the direction of the double arrow F whereby the pivoting of the bearing guide 74 in the supports 76 results in an upward and downward pivoting movement of the entire tacker apparatus of the double arrow F allows. Furthermore, due to the pivot bearing 88, the front tacker part can be rotated according to arrow D in a vertical plane and the pivot bearing 72 finally ensures that a rotary movement of the actual mouth of the tacker, i.e. the area which excludes the clamp 94, about a horizontal plane is possible, in the sense of the double arrow G. b5

The function of a stapler that is freely moveable with its mouth is then as follows:

After the initial height adjustment with the help of the angled plate 77 (see FIG. 6), the tacker moves with it its final mouth 71 towards the carrier edge area, caused by extending the shaft 70 "ind under the drive of the working cylinder 86. The pressure of this working cylinder remains even when approaching maintained at the edge, being in the Schaßbereich the stapler to support against this horizontal pressure on both sides of the muzzle two rollers 95, 95Z> are located, which may have an upper bead 96. The tacker moves with its muzzle so far to the carrier edge area already surrounded by the tensioned cover fabric, which is shown in FIG. 6 with 97 and whose applied foam padding is denoted by 98 that the Frägerrandbereich in the so of the Support rollers 95a, 956 formed trough engages in addition For this purpose, further support or holding rollers 99a, 99Z) can be provided, which are attached to the from below Create carrier edge area. Then the lock 80, 81 is released, so that the stapler to the bearing pivot point 100 of the stationary carrier 76 can be pivoted upwards or downwards fn; in this case, however, the entire tacking operation is under the pretension of the working cylinder 84, the optional presses the stapler downwards, but preferably upwards in its muzzle area (i.e. the piston constant'i of the double-acting working cylinder is pulled inwards), whereby the lower Support rollers 99a. Place 996 on the lower edge of the beam. While maintaining the from the working cylinders 84 and 86 exerted prestressing forces (it is understood that other systems are also used here can be, such as spring preload o. The like.) Then a relative movement between the carrier and the staple gun, preferably by the fact that in the case of stationary staple gun storage the to be obtained Beam-carrying table is subjected to a rotary movement. With the support or guide rollers 99a, 996 and 95a, 956, the stapler mouth faithfully follows the vertical movements of the wearer, with changes of the outer circumference (in the case of non-circular girders) by tracking the horizontal movement of the shaft 70 o by the working cylinder 80 bill is made. The firing sequence of the stapler is then matched to the speed of rotation of the table and it can be seen that in this way the nails are in perfect sequence in the carrier edge area set that firmly connect the upholstery fabric to it.

In this context, it can be advantageous to replace the two lower support rollers 99a, 996 with a rotating knife indicated at 101, which is mounted centrally directly below the mouth of the stapler and from which the work ^; The cylinder 84 is brought into contact with the underside of the carrier at the point where the cover material fell, but above which the cover material is shot by the stapler at the same time, under possibly high pressure. As a result of the rotary movement, the rotating knife 101 then simultaneously cuts off excess edge regions of the cover material in the same pass.

In the overall design of the system, one dispenses with a possibly complex rotary rotary feed of the pressure medium to the individual working cylinders on the rotating table, then can you also supply the pressure medium via hoses and then carry out the next work cycle in the reverse direction Direction of rotation so that the hoses do not move

wind up.

The representation of the F i g. 7 shows the automatic upholstery machine again in a perspective overall view with the carrier 3 having the cover material over an intermediate cushion bearing, the A multiplicity of gripping beaks 5 running around the carrier, the stationary bearing 9, a gallows-type gen pressure device 102, which presses a counter-pressure plate 103 from above onto the cushion for relief the tensioning process as well as the already mentioned control panel 67 and the tacker 68.

It goes without saying that the system according to the invention for covering any arrangements, panels, panels, Armchair backrests, tables or the like. Is suitable, because an adaptation to the respective physical dimensions of the item to be obtained is easily possible. The invention ensures on the one hand a particularly gentle, but on the other hand particularly effective and even covering of any Elements with an upholstery fabric, optionally with an elastic cushion layer in between.

It is also understood that the gripping jaws in their inner surface where they with the cover material edge come into contact, can have any coating with any coefficient of friction, such as a Pad made of suitable polyurethane rubber, made of plastics or also made of fine steel hooks that oppose the evasive direction of the cover material are "inclined inwards, so that a particularly firm tensioning is possible. It is also possible to make the jaws entirely from a suitable plastic, which is below Under certain circumstances, the friction values are sufficient for tightening and clamping the upholstery material having.

In this context, it should be noted that • the clamping elements used in the special Embodiments are designed as gripping jaws, can also have the shape of needles, generally distributed around the circumference of the carrier, the cover fabric at its edge > Holding elements are that when carrying out the relative movement between the carrier 3 and itself to be able to stretch the cover fabric on the carrier in all directions at the same time and this tension position Maintain this until the upholstery fabric is on

to the carrier, for example by a quick nailer, is immovably attached. The clamping elements, so the Gripping jaws or needles, also movable from top to bottom, grasp the cover material; is general only a relative displacement between the clamping

elements and the carrier required, but in the preferred embodiment vertical runs.

If the clamping elements are designed as needles, then the needle mushrooms are preferably directed upwards, and the cover material can be inserted into the needle points, for example by means of a pressure member working from top to bottom (circular brush or the like.) are pressed. Then the needles extend automatically or manually operated barbs, so that the cover fabric can no longer slip out of the needles. The needles can then have the desired relative displacement for the clamping process. An essential feature of the automatic according to the invention The aiming or upholstering process is therefore to be seen in

jo that it is possible to stretch the cover fabric simultaneously and evenly on all sides by accessing the tensioning elements and to hold it for the nailing process, so that the cover fabric is on the one hand only slightly stressed by the tensioning process, nevertheless

J3 but a perfectly evenly distributed, tensioned one Shape over the part to be purchased.

In addition 6 sheets of drawings

Claims (31)

Patent claims: 1. Process for automatic all-round upholstery or covering of chair seats, backrests, Armchairs, flat parts, panels and the like, wherein a cover material with a carrier on which optionally an elastic intermediate layer is located, connected and through a Relative movement between the carrier and the upholstery edge holding guide parts of the upholstery fabric is applied to the carrier and attached to it, characterized in that that a) the cover fabric (38) on the carrier (3) and on the u Intermediate layer (4) is placed that b) the protruding cover material edge (39) in separate, along the entire support circumference distributed and having means for detecting and clamping the edge Clamping elements (gripping jaws 5, needles) is introduced and held by these that c) a relative movement is carried out between the clamping elements and the carrier, whereby these move away from each other and thereby with a predetermined holding force recorded cover material; frand drawn over the carrier on all sides at the same time and is tensioned and that d) the fabric edge is held in this position until another by relative displacement between the support (3) together with nelementen din Spa one hand and a Befes'igungsvomchiung (Quick Nagler. Tacker u. dgi.) am! on the other hand, the upholstery edge is attached to the carrier. 2. The method according to claim 1, characterized in that the carrier (3) is placed with the Intermediate layer (4) and cover fabric (38) is held rotatably directed upwards that the cover fabric (38) with its protruding edge into open mouth openings of the gripping jaws (5) Clamping elements is introduced that then the mouth openings of the grasping beaks again are closed, and that the mutual relative displacement in the vertical direction so far is carried out until the gripping jaws are locked below the carrier (3) by a stop. 3. The method according to claim 1 or 2, characterized in that the additional downward inward The running infeed movement of the gripping jaws is controlled / on the cam-like sequence of the The inner edge of the grasping jaws on the edge of the carrier is then followed by a locking stop each pronging beak inner surface on an inwardly drawn-in outer edge of the den Carrier supporting part (table). 4. Device for automatic all-round rumbling or -upplying .chair seats. Backrests. Armchairs, flat parts. Panels and the like, with a Bracket for the carrier to be covered and with the cover material edge holding and zürn carrier and the brackets of which guide parts performing a relative movement, for carrying out the Method according to one or more of claims I to 3, characterized in that the Guide parts as arranged along the circumference of the holder (table 2) or the carrier (3), separate Clamping elements (jaws 5, needles) are formed and that each clamping element holding means which detect the upholstery fabric edge portion allotted to it with a predetermined holding force, in such a way that during the relative movement the tensioning and covering of the cover fabric over the at the same time Carrier (3) takes place 5. Apparatus according to claim 4, characterized in that the designed as a table (2)! ! aging for the carrier (3) by a shaft (6) rotatably held in a stationary bearing (9) is stored and that the gripping jaws grouped around the edge of the carrier (3) and this supporting table (2) (5) are articulated on a common holder and that the common holder for the Gripping jaws (5) and the table (2) are mounted to carry out a relative vertical movement which the gripping beaks a simultaneous inward and downward pivoting movement carry out. 6. Apparatus according to claim 4 or 5, characterized in that the gripping jaws (5) consist of an inner main beak part (5a) and a beak part (5b) which is movable relative to this and is mounted on this by means of a pivot bearing (23) and that movement mechanisms ( common perforated ring plate; pneumatic or hydraulic working cylinders 35) are provided, which are in operative connection at least with the movable beak part (5b) and initiate its closing movement to detect the edge of the cover material. 7. Device according to one of claims 4 to 6, characterized in that the gripping jaws (5) are pivotably mounted on a bearing ring (13) on which a working cylinder (35) is arranged separately for each gripping jaw (5). which is hinged to the movable beak part (5b) and in a double function first causes the grasping beak closing movement and then the inwardly directed pivoting movement of the entire grasping beak (5) during the relative movement of the table / grasping beak. 8. Apparatus according to claim 7, characterized in that the working cylinder (35) engages to close each gripping nose on a pressure piece (31) which is carried by a movable toggle lever arm (30a, 30b) . in such a way that when the movable toggle lever is pivoted inward, the pressure piece (31) slides like a cam on the outer surface of each movable beak part (5b) and closes it in the direction of the main beak part (5a). 9. Apparatus according to claim 8, characterized in that the toggle lever movement by stopping or form-fitting running onto the movable beak part (5b) can essentially be locked when the movable toggle lever leg (30a, 10b) is perpendicular to the movable beak part (5b) and this this is safely locked in place. 10. Device according to one of claims 4 to 9, characterized in that utilizing a dual function of the closing movement of the The working cylinder (35) also causes the gripping jaws to have their pressure effect on the gripping jaws (5) sustained during the relative displacement is for the inward pivoting movement. 11. Device according to one of claims 4 to 10, characterized in that the inwardly directed pivoting movement of each gripping beak (5) is controlled in that an inwardly directed sliding surface (41), preferably in the area of the beak tip (25) of the main beak part (ßa), along the outer edge (40) first slides along the carrier (3) to form a cam guide and then, with further relative displacement, each gripping beak (5) finds a stop on the outer edge (41) of the table (2) to achieve precise edge centering with a given constant tension of the cover material, such that each carrier is used at the same time as a template for controlling the sequence of movements of the near-gripper 12. Device according to one of claims 4 to 11, characterized in that each gripping beak (5) is adjustable in height for Compensation of upholstery supports that do not run in a horizontal plane. 13. The device according to one or more of claims 4 to 12, characterized in that the common bearing ring (13) for the oreifschnäbel (5) of the main bearing (9) of the shaft (6) Bell-shaped comprehensive bearing (14) is supported, which is vertically displaceable with a sliding sleeve (17) the shaft (6) comprises and that on the bearing (14) at least one the relative displacement between Table (2) and the grasping jaws (5) causing working cylinder (18) is provided. 14. The device according to claim 13, characterized in that the at least one working cylinder (18) to adjust the free vertical stroke between the table (2) and the jaws (5) on the Shaft (6) is rotatably, but axially displaceable and fixable. 15. Device according to one of claims 4 to 14, characterized in that the individual working cylinder (35) for the closing movement of the gripping jaws (5) and their inward pivoting movement are attached to a boom (36) from the common bearing ring (13) for the jaws (5) is worn. 16. The device according to one or more of claims 4 to 15, characterized in that for Facilitation of the pre-tensioning one on the entirety of the carrier (3), elastic padding (4) and applied cover material (38) is provided from above pressing counter-pressure plate. 17. The device according to claim 16. characterized characterized in that the counter-pressure plate to control a correct reference fabric position is transparent. 18. Device according to one or more of claims 4 to 17, characterized in that after the clamping process caused by the inward pivoting of the gripping jaws (5) entire unit of table, gripping claws and their bearings along a stationary nailing apparatus (Tacker 42) and then a cutting device that cuts off the cover material on the inside is rotatable, preferably by more than 360 °. 19. The device according to claim 18, characterized in that the stapling or nailing apparatus and / or the cutting device are guided in their spaced relation to the carrier of sliding rollers which are guided by the carrier itself at least on the outer circumference, preferably additionally on an inner rim. 20. The device according to one or more of claims 4 to 19, characterized in that for Movement of the swiveling-in movement of the gripping jaws (45) on during the relative movement on Pivoting experienced angle lever (49) is provided, which is attached to the associated gripping jaw engages via a spring (51) 21. Device according to one of claims 4 to 20, characterized in that the outward movement of each gripping beak (45) is limited by stops (53a, 53b) on each of the gripping beak and the Tiich (2) 22. The device according to one or more of claims 4 to 21, characterized in that at separate drive for the grasping jaw closing movement each gripping beak (5) is designed as a pivotably mounted angle lever, the free End is spring biased for inward movement. 23. The device according to one or more of claims 4 to 22, characterized in that the The gripping clip is stored and calibrated on a carrier (61) which is approximately up to the carrier height "" Shear-like are held on the carrier (61) in such a way that an approximately horizontal Egg lead opening results 24. The device according to claim 23, characterized in that the rear side of the grasping jaws has a cam-like guide contour such that an opening movement against the pressure of a Closing spring (64) takes place by inserting a pressure piece (66). 25. The device according to one or more of claims 4 to 24, characterized in that the high-speed nailer or tacker (68) can be freely rotated about at least two pivot points, while under System following the sliding edge of the carrier edge, is stored. 26. Device according to Ansprucl. 25. characterized in that the tacker storage a has rear bearing guide (74), which on a stationary carrier (76) up and down freely is pivotably mounted under the action of a working cylinder (84) and a sliding guide (83) for has a horizontally displaceable shaft (70) on which a further working cylinder (88) engages. 27. The device according to claim 26, characterized in that the horizontally displaceable Shaft (70) of the tacker bearing at its free end has a vertical pivot bearing (88) on which a Lever (90) is freely pivotable attached to the its free end has a further, horizontal pivot bearing (72). that a second lever (8 S) stores on which the shooting apparatus (69) so is attached that its mouth coincides with the vertical axis of rotation dus horizontal pivot bearing (72). 28. Apparatus according to claim 26 or 27, characterized in that in the region of the stapler mouth (71). Preferably on both sides vertical and horizontal support and guide rollers (99a, 99b; 95a, 95b) are arranged, which serve to guide the freely pivotable and movable staple mouth area along the edge of the carrier edge. 29. The device according to one or more of claims 26 to 28, characterized in that below the shot muzzle (71) a rotating knife (10) is mounted, which is against the Supports carrier edge channel area and from the horizontal swivel position pre-tensioned at the same time cuts the free edge area of the upholstery fabric when it is shot. 30. The device according to one or more of claims 4 to 29, characterized in that the Tensioning elements are barbed needles arranged around the circumference of the carrier. 31. The device according to claim 30, characterized in that the needles with their tips directed upwards urii the carrier (3) are arranged and have retractable barbs that after when the cover material (38) is speared onto the needles, grip it from behind.