DE883066C - Method and device for producing insulating panels from a mixture of insulating material and binding agent - Google Patents

Description

Method and device for producing insulating panels from one Mixture of insulating material and binding agent For the production of insulating panels from insulating materials and a binder, e.g. B. cork grist and pitch or the like., In a continuous operation it is already known, a mixture of the two ingredients in a hot state by a z. B. with rotating, endless' belts working pressing device to lead. The belts of this pressing device run between. those. themselves the mixture flows horizontally, i.e. on the working level of the press, and that upper band is pressed onto the mixture. Furthermore are also. vertically directed, also circumferential sidebands became known in this context.

So that the plate-shaped workpieces formed in the pressing device the Preßvorrich.tung dimensionally stable, leave, must go through. Cooling for an accelerated Verfesti; gunz care should be taken. Pre-cooled is advantageous for this purpose Air or another gas with the help of perforations in the circumferential belts be attached by the mixture moving with the rotating belts pushed through and / or sucked through. They also suggested liquid To use coolants instead of gaseous and vaporous agents. and this if applicable adapt the binder so that between the binder on the one hand and the coolant on the other hand, chemical reactions take place which bring about rapid solidification. or favor.

With all of these well-known suggestions. can be consistently still do not achieve that the insulating panels produced in these ways. in your The structure turns out to be homogeneous. Rather, the plates usually have an uneven shape Dense and restlessness on and:. are especially at the bottom Area not uniform and. just because the pressure of the upper belt is in the The mixture is initially drawn into the pressing device primarily on the upper layers of the mixture heaped on the lower belt and affects the lower Sited not strong enough and, not propagating evenly. Also is the density at the edges of the plates weaker than in the middle, because. during the ongoing Movement of the belts accumulates the mixture in the middle. The result is that straight the side edges that are most exposed to stress are often inadequate Maintain strength and do not become sharp-edged. In the manufacturing process These deficiencies also have the effect that the, unequal densities and the congestion tensions in the belts occur "which lead to operational disruptions being able to lead.

The invention has set itself the task of using special measures to bring about an even distribution and compression of the mixture and thus that To enable the manufacture of insulating panels that are homogeneous in their density and consistently have sharp edges. Furthermore, the aim was that in the production Malfunctions due to over-tensioning of the belts of the pressing device can be prevented.

To solve this problem, the invention proposes, starting from a Process in which a mixture of insulating material and binding agent, vo, rzug #, v-eise Crushed cork and pitch or the like, insulating panels in continuous operation a press belt system are produced under the action of gases or liquids, before that the mixture as it is fed into the pressing device in this way in all layers is evenly distributed and compacted that it is at least of. two sides that Under and surface from, z. B. by the fact that the feed belts under pointed Can run angle to the working plane, subjected to a slowly increasing pressure will.

With the preferred. Implementation form for the method according to the invention is on the mixture when it is fed into the pressing device at the same time by the Pages; the infeed belts inclined to the horizontal an increasing pressure z. B. by also conical .zuaufende, known per se vertical sidebands exercised.

According to the invention, the mixture is thus drawn into the pressing device one either from above and below or one evenly from all sides: slowly increasing. Exposed to pressure. This makes one the same in all layers Compression of the mixture and consequently a uniform density and uniform surface of the insulating panels to be produced.

By an additionally arranged, adjustable formwork or the like. moreover, more mixture can be added to the sides and less mixture to the middle, and onto these Make sense of the accumulation of the mixture that occurs with the continuous movement in the middle be balanced. This causes it to move during the ongoing operation there is more mixture on the n lateral edges than is the case with a uniform one Distribution over the entire cross-section would be the case. Accordingly, obtained according to the invention manufactured insulating panels on the side edges also the necessary density and strength, and most importantly they will be sharp-edged throughout.

In attempts to carry out the method according to the invention asked it to be beneficial to make the drive of the belts elastic Couplings. to be incorporated, so in the event of low overvoltages that may still occur and congestion possible weak differential movements between the individual belts can be compensated. It is advisable to use the couplings in this way train that the torque to be transmitted within certain limits by spring pressure are adjustable.

Claims (1)

PATENT CLAIMS: i. Process for the production of insulating panels a mixture of insulating material and binding agent, preferably cork grist and pitch od. Like., in continuous operation on a press belt system. under action of gases or liquids, characterized in that the mixture is drawn in in the pressing device in such a way distributed evenly in all layers and is condensed that it is at least, from two sides, in particular from the lower and surface, e.g. B. by. The intake belts run at an acute angle is subjected to a slowly increasing pressure to the working level. z. procedure according to claim. i, characterized in that the mixture when moving into the Pressing device at the same time also from the sides of the horizontal. inclined Feed belts ago an increasing pressure z. B. by also conical, tapering, vertical sidebands known per se is exercised. 3. The method according to claim i or a, thereby. marked, i.e. the feeding of the batch. in each required irregular distribution over the. Cross section z. B. by means of adjustable templates od, the like. Is effected. q .. Device for supporting implementation of the procedure according to claim i and: 2, characterized by the installation of elastic couplings in; the drive of the individual belts of the pressing device. 5. Apparatus according to claim q., characterized in that the torques of the clutches z. B. by spring action are adjustable.