DE7320854U - Machine for veneering interior profiles - Google Patents

Description

Machine for veneering interior profiles

The innovation is in the field of woodworking machines and relates to a machine for the wood industry for veneering of inner profiles in transit with a transport device for the workpieces.

Devices are known for gluing strips onto inner profiles, such as, for example, on the folds of plate-shaped workpieces, in which the axis of a glue roller adapted to the inner profile and the axes for gluing the strips in motion in the same plane arranged pressure rollers with the axis of support rollers, or parallel over these arranged transport- » roll for the workpiece, enclose an angle of less than 90 °, so that of the

The pressure exerted on the inner profile by pressure rollers is the same at all points if possible (DAS 1 299 113).

In such known devices, although the workpiece is guided in the pass, but this requires special pods that rest against the workpiece from above and below, and a counter-pressure roller is also required, which the absorbs or counteracts pressure generated by the pressure roller when the strip is pressed into the inner profile in these known devices, the pressure roller is designed in such a way that it has a profile on its circumference, which is adapted to the inner profile so that it deforms and presses the strip that is to be glued into the inner profile of the workpiece with one edge. Wood veneers can hardly be processed with such a known device possible because the wood veneer strips would break or tear.

The innovation has set itself the task of a machine create, which is designed as a conventional throughfeed machine, i.e. with the workpiece engaging on the upper and lower sides and this transport chain is formed and are to be glued with the wood veneer strips in internal profiles.

The innovation is a machine for the wood industry for veneering internal profiles with a transport device for the workpieces, one on the way of the workpieces

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arranged profile milling cutter for the production of interior profiles an edge and a downstream magazine for feeding veneer strips and an indication roller for glue to the inner profile, characterized by a damping and / or humidifying and heating device for the individual veneer strips, the a bending or folding device for the veneer strips is arranged downstream and then a feeding and pressing device for the veneer strips formed into the profile to the Inner profile of the workpiece · According to the innovation, the steaming and / or humidifying and heating device consists of a number of nozzles on the path of the fuming strip for supplying steam, hot or cold water and / or hot air and continue from one or more heating plates to which the veneer strip is pressed by rollers

The bending or folding device consists of a heated beam on which drive rollers are arranged for the further conveyance of the veneer strip, as well as a guide plate at the infeed runs straight and parallel to the veneer strip and gradually becomes more curved over the length of the bar on one side is up to the part of the guide plate protruding from the beam on one side, forming a right-angled profile the top of the beam hangs up.

The supply and pressure device consists of a heated funnel beam which, under resilient pressure, counteracts

the inner profile of the workpiece and the one on the inlet side the supplied, profiled veneer strips are pressed into the inner profile provided with glue, as well as downstream pressure rollers, those with their outer surfaces against the surfaces of the inner profile or against the profiled veneer strips glued on there press on.

The innovation is explained in more detail below with reference to the drawings with reference to an exemplary embodiment. In the drawings demonstrate:

Fig. 1 the profiling.

Fig. 2- the glue application,
and 2a

Fig. 3 the magazine,

Fig. 4 Moistening and heating,

Fig. 5 Profiling.,

Fig. 6 feeding,

Fig. 7 Press,

Fig. 8 Pressing in
and 8a

Fig. 9 edge milling,
Fig. 10 Edge veneers.

The individual representations according to Figures 5 ″ to 8 are for the purpose chosen for the sake of clarity and expansion, actually is it date! to a single coherent Device, the individual parts of which are coordinated in their functions and connected to one another, a continuous and supplied veneer strips

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these related parts of the device at the same time and is processed and treated there in its different areas at the same time

The workpieces 1, which are generally plate-shaped Workpieces, for example door leaves, pass through an even feed and follow one another closely the machine after the innovation. You are in a conveyor which rest against the underside and the upper side of the workpiece 1 with a lower and an upper chain strand and so guide the workpiece firmly and safely, so that it does not move even when exposed to the side bridge can. The chains are made of an elastic material Material, preferably made of rubber, provided. Such conveyors are well known and common for woodworking machines.

First, the workpiece runs past an edge milling cutter 2, which provides the edge 3 of the workpiece with an inner profile 4 - which is rectangular in the embodiment shown here. Immediately behind a Beleimrolle 5 is on the way of the workpiece arranged, which according to the Fig. 2a _s which shows a section through part and the workpiece, is provided at its periphery with a right-angled profile which the milled into the edge of the workpiece 1 Profile 4- is equivalent to. The supply of glue to the outer perimeter

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the glue roll 5 is not shown here, it is shown in FIG rather educated. The glue roller 5 provides both surfaces, the inner profile 4 at the same time with a glue or preferably with a hot melt adhesive.

At the height of the glue roll 5 and directly on the path of the workpiece 1, a tournament strip is arranged in the magazine according to FIG. The tournament tire magazine is in the Pigur In short, the length of the magazine and the veneer strips kept in stock corresponds to the length of the inner profile of the workpiece to be glued the length of the side edge of the workpiece 1. In the magazine 6, a pack 8 of tournament strips is placed on a table 7, which from its rear through a, preferably Pressurized air cylinder 9 and a slide 10 against a front stop wall 11 is held · A bumper strip 14 is arranged on the side of the table 7 of the magazine, against which the pack 8 of tournament strips rests with its front edges. Aa the front edge of the bumper bar 14- two trigger rollers 12 and 13 are arranged, between each of which the foremost tournament strip en 15 is withdrawn from the magazine 6.

Immediately following the magazine 6 is corresponding to the Tigur 4- a steaming and / or humidifying and heating device arranged, which consists of a plurality of nozzles 16, which are directed from one or both sides against the tournament strip 15 are, and from which steam, hot or cold water and / or

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hot air can be sprayed onto the veneer strips 15. When steam is blown onto the veneer strip, only a single nozzle or nozzle group 16 is required, if for example cold water is sprayed on, it is discharged through nozzles 16 to the veneer strip 15, while immediately behind it further nozzles 17 are arranged, which blow hot air onto the veneer strips passed and pressed by Bollen 19 against this heating plate. The heating plate goes over or continues in accordance with FIG. The guide plate 20 projects beyond the heated beam 21 together with 'the veneer strip 15, so that the upper edge de against the veneer strip 15 adjacent surface of the heated Beam 21 lies approximately in the longitudinal center of the veneer strip 15. The guide plate 20, with the part protruding over the heated beam 21, is gradually extended over the length of the heated beam bent more sharply until it is at the end of the heated », lalkens has a right-angled profile and rests against the heated beam 21 from one side and from above. Between the guide plate 20 and the heated bar 21 of the veneer strip 15 is guided, it is at the inlet with its lower part between the Side surface of the heated beam 21 and the guide plate 20 wedged and is over the length of the heated beam and of the guide plate: \ n its upper part against the

"Pressed the heated beam so that it has an angular shape at the outlet occupies. The promotion of the strip of veneer take over there with drive rollers 22, which are on the upper side of the heated Beams 21 are rotatably mounted and driven in the same direction and press the veneer strip against the guide plate 20 and continue to promote. The deformation of the straight and evenly incoming veneer strip 15 to an angle profile is achieved by allows the prior steaming and heating of the veneer strip and effected without damage.

The one that comes out of this bending and folding device is at an angle Shaped veneer strips 15 are then immediately inserted into the inner profile 4 of the workpiece running past 1 inserted, for this purpose the bending and folding device is arranged and aligned in such a way that the expiring profiled veneer strips 15 into the inner profile 4- des Workpiece 1 is inserted. This insertion of the veneer strip is shown schematically in FIG. Indeed it is however, immediately following the heated bar 21, another heated bar 23 is arranged, which is also in one piece or can be connected to the heated beam 21 in an articulated manner. This heated beam 23 is slidably mounted and is pressed against the inner profile 4 of the workpiece 1 by springs 2A- according to figure 7

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The inner profile 4- of the workpiece 1 is, as already described above, provided with glue or hot-melt adhesive, so that the beam 23, which is introduced into this inner profile and is removed from the heated beam 23 impressed profiled veneer strips I5 stuck to the inner profile due to the heat communicated by the heated beam 23 This heat supplied by the heated bar 23, on the one hand, causes the remaining drying of the veneer strip and on the other hand the hot melt adhesive introduced into the inner profile of the workpiece is kept melted or melted again and thus causes the bond to be evenly and safely. Immediately afterwards to the heated beam 23 are arranged according to FIG. 8 pressure rollers 25 and 26, which with a cylindrical surface area the veneer strips press against one and the other inner surface of the inner profile so that the angular edge of the veneer strip is not mechanically overstressed. The arrangement of the pressure rollers can be seen particularly clearly from FIG. 8a, which shows a cross section through the workpiece and the pressure rollers. It can be seen there that the axes of rotation of the pressure rollers at the pressure roller 25 parallel to the surfaces of the plate-shaped Workpiece and the axis of rotation of the pressure roller 26 is parallel to the edges of the workpiece 1.

The workpiece then runs past milling units 27 and 2 &, as shown in FIG Edges of the veneer strips glued into the inner profile

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Mill off in alignment with the adjacent surfaces · Then is yet another edge veneer device is provided according to FIG. 10, which the edge 29 of the workpiece 1 veneered above the inner profile. This veneer edge device consists of a glue applicator roll 30, a feed for the veneer strips 31, a pressure roller 32 and further pressure rollers 33 * which edge milling cutters can be arranged next to, which mill off the protruding strips of the veneer strip glued to the edge 29

From the above description it can be seen that with a machine according to the innovation, inner profiles of workpieces are to be veneered in the run, the wood veneers being carefully preformed and glued in so that they do not break or tear open. Because of the heating and further heat input during the deformation and especially the gluing of the Veneers only require relatively low pressure forces that neither mechanically overstress the veneer nor destroy its surface, nor take special measures make necessary to secure the workpieces against shifting in their conveying device as a result of the pressure.

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Claims (1)

Sohut zanaprüohe 1.) Machine for the wood industry for furaiereu of inner profile lon with a transport device for the workpieces, a profile milling cutter arranged on the path of the workpieces for the manufacture of » setting of inner profiles on one edge as well as one after Orderly magazine for feeding fcon veneer strips and an indication roller for glue to the inner profile, characterized by a damping and / or heating and heating device (16, 18) for the individual veneer strips (15) » which is followed by a bending or folding device (20, 21) for the veneer strips and then a Feeding and pressing device (23 ί 26) for the veneer strips formed into the profile on the inner profile (4) of the Workpiece 2 ·) Machine according to claim 1, characterized in that the steaming · and / or humidifying · * and heating device from one Number of nozzles (16, 17) on the path of the veneer strip (15) for supplying steam, hot or cold water and / or hot air and further from one or more Heating plates (18) to which the veneer strip (15) is pressed by rollers (19) / 5.) Machine according to claim 1, characterized in that the bending or folding device consists of a heated beam (21) "on which drive rollers (22) for conveying the veneer strips (15) are arranged, as well as a guide plate (20) ), which runs straight and parallel to the veneer strip (15) at the inlet and is gradually more strongly curved over the length of the beam (21) on one side until the part of the guide plate (20) protruding beyond the beam on one side Forming a right-angled profile, placed on top of the beam (21). / 4.) Machine according to claim 1, characterized in that the Feeding and squeezing device from a heated feeder there is a stabilizing beam (23) which, under resilient pressure (24) against the inner profile (4-) of the workpiece (1) and the profiled veneer strips (15) fed to the inlet side into the inner profile (4-) provided with glue presses and downstream pressure rollers (25, 26) that with their outer surfaces against the surfaces of the inner profile or press against the profiled veneer strips glued on there. 73288541-4.10.73