DE1947565C - Veneer cooling device - Google Patents

Description

Is reported. An embodiment of the invention

The facility is explained using the drawing in one / a.

It shows

Γ i y. I a veneer cooling device in side view.

I · "i ü. 2 the device according to FIG.

F i ι ;. 3 shows a section along the line 111-111 in F i g. 2,

F i g. 4 that shown in FIG. 3, the part shown is seen from the Furnter exit point in a slideshow view.

F i g. 5 shows a section along the line V-V in FIG. 2 and

F i g. 6 is a slide view of the in FIG. 5 shown Part νυη seen from the entry side of the veneers.

The in the F i g. 1 and 2 shown veneer cooling equipment is built on supports 1, which are connected to one another by horizontal cross beams 2. The frame formed in this way carries a horizontal channel 3 with a rectangular cross-section, through which a veneer strip 4, drawn in dash-dotted lines and supplied from the left in the figures, is passed. For this purpose, a conveyor track is arranged in the channel 3, which in the present exemplary embodiment has several pairs of profile rails 6 (FIGS. 3, 5 and 6) which extend through the channel 3 in the direction of passage. Each lower profile rail S serves as a guide for an endless conveyor chain 7, which revolves around chain wheels 8 mounted at the ends of the rail (the chain wheels are not shown in FIG. 6), via which one of these chain wheels 8 the chains 7 are driven that their upper run, on which the veneer band 4 rests, runs in the conveying direction. To ensure reliable entrainment, several roller levers 9 are articulated on the upper profile rails 6 over the length of the rail rest on the veneer band 4 above the chain 7.

The conveyor track described can preferably be provided by a preceding one that delivers the veneer belt Machine (Fugenverlcim-Maschinc) are driven synchronously, as at 28 in F i g. 1 is indicated. In this way it is ensured that the conveying speed always corresponds to the delivery speed matches the preceding machine.

At the right end of the channel 3. where the veneer tape 4 the cooling device ν 'are two fans 10 and 10 'angeord: which are used to generate a flow of cooling air that goes against the Kmderrichiung the veneer flows through the channel. Each fan 10, 10 'is powered by its own, am Motor 11 attached to the frame is driven. The cooling air is sucked in from the environment at 12. For the overhead line of the radial valve from the housing

Tor exiting cooling air is an upper distribution channel 14 or 14 'and a lower distribution channel for each fan 15 or 15 'provided, the latter each having a manifold 13 b / .w. 13 'with the fan housing are connected. The Veiteil canals 14. 14

and 15, 15 'extend from the sides above the Channel 3 attached fans 10, 10 'against the central axis of the channel 3 and are in this direction conically tapered. The cooling air flow comes out of the distribution channels above and below the veneer strip into the channel 3 ". At the point where the veneer strip 4 leaves the cooling device, there are resilient ones F'ilien 16 arranged between their neighboring Leave a horizontal slot hot on the edges for the veneer band to pass through. Through

Ϊ5 these foils 16 will prevent the undesired leakage of Cooling air is essentially prevented at this point.

The drive of the two fans 10 and 10 '

is preferably carried out in two speed levels for the purpose

Adjustment of the delivery rate to the respective

may. Each fan can also be switched on separately in the event that only a narrow veneer band is required will be produced.

At the other end of the channel 3, where the veneer tape 4 enters the device, there is an air outlet 20, which is arranged in a vertical outlet duct 25 and in two lateral outlet ducts 24 and 24 'for the outlet of the cooling air is subdivided. For transferring the cooling air flow into the named Shafts are provided with curved guide plates 21 (FIG. 5). The Tcilstrom below the veneer band 4 is passed into conically widening channels 22 or 22 'and from there to both sides Via a respective bend 23 or 23 'into the lateral outlet shafts 24 and 24'. The cooling air Partial flow above the veneer strip is directly above into the duct 25, which is designed as a diffuser diverted.

For this purpose 2 sheets of drawings

Claims (4)

1 2 In known fusing joining machines, individual veneer sections are joined in a heating zone to form an uninterrupted band under the action of pressure and heat. After 1. Execution to cool veneers, when 5 leaves the heating zone, the the in the veneer exit area of a veneer tied veneer through a transition zone, together / machine a cooling zone with several dead and then get into a cooling zone through which Ren room air or outdoor air blower provided above a conveyor belt, blow (fans) is arranged. their air- The disadvantage of these devices I :: - is that flow to the fur- itf running through the cooling zone only the ropes facing the fans of the veneer, kidney »is erected. as a result, gc identifies - room air is locally exposed to what en. η et, "that the fans (K) and 10 ') each even cool down the veneers in the reverberation with an upper distribution channel (14 or 14 ') and a moderately short cooling zone because of the small amount of goods lower distribution channel (15 or 15 ') in terms of conductivity of the material not guaranteed. Connection stand, the distribution channels preferential 15 consequence of the uneven cooling and occasionally to the middle of one of the cooling air in the case of humidity effects: can tension sag along the conveyor track (5 to 9) or cracks appear in the veneers. Fumier-Durchlaufkiiruus (3) streamed conically "It is also a KühKoirichtung bekanmverjü-i ; t have become and flow into the flow channel (German utility model IS (O 327) (Fig. J, Fig. 4), and that in the veneer entry area 20 Ki of the pressed chipboard in a vertical position rich a run through the cooling device in communication with the flow channel, the plates standing air outlet (20) is arranged. which individually and at a short distance from each other on ih from a central outlet shaft (25) and ren edges are held, so that a Luflslröz.wei lateral access shafts (24 and 24 ') mung wi.rden passed through the stack exists, whereby the side shafts with front 25 can. For cooling sensitive, thin fur parts to the center of the flow channel conical nierblätze, is such a device because of the dei tapered channels (22 or 22 ') in connection with the edge-side holder and the protruding after cooling, gear required I'm not suitable. 2. Device for cooling veneers The invention is therefore based on the object according to claim 1, characterized in that 30 a device for cooling veneers of the einder Durchlaufs.anal> ~) to create on the veneer output mentioned type, the uninterrupted step side by resilient foils (16). which allow the slit for the passage of the veneer band (4) to evenly lower the temperature of the material to such an extent that it prevents the outflow of cooling air that an immediate further processing without sealing is possible (Fig. ?>) . 35 Intermediate storage is possible. 3. Device for cooling veneers The veneer cooling device according to the invention according to claim 1, characterized in that it is characterized in that the fans each Area of the veneer inlet opening with a duct with an upper distribution channel and an underside (21) are arranged, which are the Kühlluft- ren Verieilkanal in connection, the flow from the flow channel (3) in ('en after 40 distribution channels, preferably to the middle of a front Cooling air directed above, designed as a diffuser, in the direction along the conveyor track through-Scliacht (25) deflect (Fig. 5). flowed veneer flow channel tapered conically 4. Device for cooling veneers are and open into the flow channel, and that im according to claim !, characterized in that the veneer entry area is connected to the passage channel the conveyor track (5 to 9) has several pairs of air outlets connected in 45, Spaced from each other arranged in passages from a middle outlet shaft and two direction extending, upper and lower lateral exit shafts, with the seitli profile rails (5, 6), wherein the lower chen shafts with preferably to the center of the profile rails (5) each as a guide for an end flow channel conically tapered channels in lots, Circulating conveyor chain (7) are used, on which 50 are linked. The veneers rest on the upper run, and the device described for cooling whereby on the upper profile rails (6) roller veneers have the advantage that the valve lever (9) for weight loading of the veneer doors, cooling air conveyed by means of the distribution shaft are hinged. divided into an upper and a lower air stream 55 and thus the continuous veneer is dei from both sides in countercurrent over the entire length Facility coated with cooling air, where d; is mi a temperature of about 1.20 C voi) dei Joint glue machine delivered material that: Cool 60 facility with a temperature of about 35 bii 45 ° C and direct without intermediate storage The invention relates to a device for cooling can be processed further, from which it is <: in ra len of veneers, with a shear material flow in the exit area and considerable savings Veneer assembly machine results in a cooling zone with storage space. Furthermore, through the training several provided above a conveyor track 65 formation of the conveyor track, which a gentle entrainment Blowers (fans) is arranged, the air of which ensures the veneer, the cooling air an opti stream onto the veneer running through the cooling zone. ;