阅读说明：本技术 用于制造绝缘板的设备和方法 (Apparatus and method for manufacturing insulating panels ) 是由 J·伯恩斯 K-P·施莱茨 J·达乌特 于 2020-01-17 设计创作，主要内容包括：本发明涉及用于由压制材料垫(2)制造绝缘或隔音板的设备和方法,所述设备具有第一区和第二区(Z1、Z2),所述压制材料垫至少部分地由木质纤维素的、用粘合剂润湿的颗粒制成,其中,所述第一区(Z1)构造成用于加热和/或压缩所述压制材料垫,并且所述第二区(Z2)构造成用于借助于定型板(3)来硬化所述压制材料垫,并且被驱动的环绕的筛带(5a-5f)设置成与上压制材料垫表面和下压制材料垫表面处于接触中。为了提高生产速度而规定,使用至少四个环绕的筛带(5a-5f),其中至少两个筛带在所述第一区(Z1)的区域中设置成与压制材料垫(2)处于作用接触中,并且其中至少两个筛带在所述第二区(Z2)的区域中设置成与所述压制材料垫(2)处于作用接触中。(The invention relates to a device and a method for producing an insulation or sound insulation panel from a mat of pressed material (2) having a first zone and a second zone (Z1, Z2), which is at least partially made of lignocellulosic, binder-moistened particles, wherein the first zone (Z1) is designed for heating and/or compressing the mat of pressed material and the second zone (Z2) is designed for hardening the mat of pressed material by means of a setting plate (3), and a driven, circulating screen belt (5a-5f) is arranged in contact with the upper and lower mat surfaces of the pressed material. In order to increase the production speed, at least four circulating screen belts (5a-5f) are used, wherein at least two screen belts are arranged in the area of the first zone (Z1) in active contact with the press material mat (2), and wherein at least two screen belts are arranged in the area of the second zone (Z2) in active contact with the press material mat (2).)

1. Apparatus for producing an insulation or sound insulation panel from a mat of pressed material (2) having a first zone and a second zone (Z1, Z2) which are at least partially made of lignocellulosic, binder-moistened granules, wherein the first zone (Z1) is configured for heating and/or compressing the mat of pressed material and the second zone (Z2) is configured for hardening the mat of pressed material by means of a setting plate (3) and a driven, encircling screen belt (5a-5f) is arranged in contact with an upper and a lower mat surface of pressed material, characterized in that at least four encircling screen belts (5a-5f) are used, wherein at least two screen belts are arranged in the region of the first zone (Z1) in active contact with the mat of pressed material (2), and wherein at least two screen belts are arranged in active contact with the press material mat (2) in the region of the second zone (Z2).

2. An apparatus according to claim 1, characterized in that the at least four screen belts (5a-5f) each have a respective drive (8).

3. The apparatus according to claim 1 or 2, characterized in that means (4a, 4b, 4c) for steam loading the mat of compacted material (2) are provided in the first zone (Z1) and means (11) for air cooling the mat of compacted material are provided at the end of the second zone (Z2).

4. The apparatus according to any one of claims 1 to 3, characterized in that the apparatus has an adjustable height inlet (9).

5. The apparatus according to claim 4, characterized in that a steam loading device (4c) is provided in the inlet (9).

6. The apparatus of any one of claims 1 to 5, wherein the sizing plate is a heatable plate.

7. The apparatus according to any one of claims 1 to 6, characterized in that the first and second zones (Z1, Z2) are directly adjacent to each other.

8. An apparatus according to any one of claims 1-7, characterized in that a slide (13) bridging the wedge (12) between the screen band turning roll (7) and the press material mat (2) or screen band (5a, 5d) is arranged between the two screen band turning rolls (7).

9. Method for producing an insulation or acoustic panel from a mat of pressed material made at least partially of lignocellulosic, binder-moistened granules with the aid of an apparatus according to any one of claims 1 to 8, characterised in that at least four encircling screen belts are used, wherein at least two screen belts act on the mat of pressed material (2) in the region of the first zone (Z1) and wherein at least two screen belts act on the mat of pressed material (2) in the region of the second zone (Z2).

10. A method according to claim 9, characterized in that the at least four screen belts (5a-5f) are driven by respective drives (8).

11. Method according to claim 9 or 10, characterized in that in the first zone (Z1) means (4a, 4b, 4c) for steam loading load the mat (2) with steam and at the end of the second zone (Z2) means (11) for air cooling cool the mat (2).

12. Method according to any one of claims 9 to 11, characterized in that the inlet (9) is adapted to the incoming mat (2) of compacted material to be treated by means of a device (10).

13. The method according to any one of claims 9 to 12, characterized in that the press material mat (2) is steam-loaded in the inlet (9).

14. The method according to any one of claims 9 to 13, characterized in that the first and second zones (Z1, Z2) are arranged directly adjacent to each other.

15. A method according to any one of claims 9-14, characterised in that the press material mat (2) is guided in a wedge-shaped section (12) between two screen belt turning rolls (7) via a bridging slide (13).

Technical Field

The invention relates to a device for producing an insulation or sound insulation panel from a pressed material mat, having a first zone and a second zone, which is at least partially made of lignocellulosic, binder-moistened granules, wherein the first zone is designed for heating and/or compressing the pressed material mat and the second zone is designed for hardening the pressed material mat by means of a setting plate, and a driven endless screen belt is arranged in contact with the upper and lower pressed material mat surfaces.

The invention further relates to a method for producing an insulation or sound insulation board from a pressed material mat made at least partially of lignocellulosic, binder-moistened granules using the above-mentioned device.

Background

Such a device is disclosed, for example, in DE102008039720B 4. In some cases, such a device has a precompression device or a post-action pressing device, for example a continuous press, in series, but this is not essential within the scope of the invention. The products finished on this apparatus are provided, for example, by the company SOPREMA GmbH under the name Pavatex or by the company h. Examples of binders which come under the principle of polycondensation or polyaddition are isocyanate glues (PMDI).

Within the scope of the invention, the insulating plate should preferably be such that it can be at 100kg/m²-240kg/m²Density manufacturing of (2). In this case, the amount of the solvent to be used,the screen belt or simply the screen is used in its function to guide the mat of press material through the apparatus at a desired speed in such a way that the screen belt is driven at the same speed as the mat that should be transported. In this case, steam can be introduced into the press material mat from the outside or liquids and air can be removed through the sieve.

In such devices, it has been found that a sieve made of plastic or wire braid can reach its tensile load limit when the drive power is exceeded. This would undoubtedly lead to a limited productivity (current limit is about 8t/h in the case of a 60mm thick mat of compacted material), since when the permeable belt has the maximum tensile strength, this would lead to a length limitation of the hardened section, which depends on the product density. The required curing time of the adhesive together with the maximum length of the curing section determines the achievable speed.

Disclosure of Invention

On the other hand, however, it is desirable to increase the production rate to increase the throughput, which is therefore the task of the present invention.

In this context, this object is achieved by the features of claim 1 and in particular by the use of at least four encircling screen belts, wherein at least two screen belts are arranged in the region of the first zone in active contact with the press material mat and wherein at least two screen belts are arranged in the region of the second zone in active contact with the press material mat.

The term "active contact" is also to be understood here to mean that a further circumferential perforated belt extends between the press material mat and the screen belt. That is, there are separate belt systems across the width of the mat of compacted material for both zones. In each zone, at least one screen belt is arranged above the press material mat and one screen belt is arranged below the press material mat. The inventors have realized that the load onto the screen belt is particularly large in the region of compression or steam heating, that is to say approximately in the first third of the entire plant. For this reason, a separate screen belt is used for the first zone on both sides of the mat of pressing material, which can be driven independently of the screen belt acting in the stiffening zone (that is to say the second zone). This achieves that the absorption of the resulting tensile force is distributed over the two belt systems. When the drive power that can be introduced is used for a total of at least four screen belts, a significantly higher speed of the screen belts and the press material mat can be achieved than hitherto. Calculations and tests have shown that with such a plant it is possible to produce at least 15 tonnes of desired insulation panels per hour. That is, when the frictional force of the screen belt acting on the conveyor belt above and below is distributed to the plurality of belt winding devices to realize a long apparatus for manufacturing the insulation board using the screen belt that can be used, productivity can be remarkably improved.

In this case, it is preferred that at least four screen belts each have a respective drive.

Thus, each screen belt can exhaust its power limit. The tensile stress on the screen belt can be detected via a suitable sensor and the result flows into the drive controller. Therefore, the drive torque can be kept within the allowable range. Usually, driven deflection rollers are responsible for driving the screen.

Furthermore, it is advantageous if means for steam loading of the mat of compacted material are provided in the first zone and means for air cooling of the mat of compacted material are provided at the end of the second zone.

The higher speeds achievable with the present invention allow higher production rates with slightly higher energy introduction or slightly increased plant length. Thereby providing the necessary energy for hardening the press material mat and its binder. The steam is designed, in terms of its pressure, such that it penetrates at least as far as the middle of the press material mat and heats it. Here, it is also possible to refer to a steam-air mixture, wherein the dew point can then also be set. On the opposite side of the mat of compacted material, preferably at least a portion of the moist air is sucked off again or a negative pressure is generated by means of a suction device in order to support the penetration depth of the steam into the mat of compacted material and in order to reduce the curing time in the second zone. In this case, it is advantageous if there are at least two steam application stations in the first zone, one steam application station applying steam to the press material mat from above and the other steam application station applying steam to the press material mat from below. The first zone (which is subsequently referred to in the description as "vapour loading zone" for the sake of simplicity of readability) is generally about shorter than the second zone (which should be referred to as "hardening zone").

Finally, the air cooling device serves the purpose of cooling the hardened press material mat to such an extent that after discharge from the apparatus no detrimental processes, such as hydrolysis, occur which impair the quality of the board.

Preferably, the apparatus has an inlet for adjusting the height of the energy source.

The drive power necessary for the press material mat depends to a large extent on the thickness of the press material mat and its compression. Since the customer temporarily wants to change his product and the product thickness preferably fluctuates between 5mm and 240mm, an adjustment may be necessary in order to cause additional compression or to make the spacing between the screen belt at the upper side of the press material mat and the screen belt at the lower side of the press material mat adjustable.

It is advantageously ensured that a steam charging device is provided in the inlet.

By already steam-loading the mat in the inlet region, the frictional forces occurring when transporting the mat are already significantly reduced, since the press material mat softens.

Preferably, the calibration plate is a heatable plate.

In this zone and preferably in zone 2, there is therefore provided a calibration plate 3, which may be heatable via different systems. Here, for example, a channel for heating the liquid, an induction heating device, an electric heating device or a steam heating device is considered, wherein the steam heating device is furthermore capable of releasing steam directly to the mat of pressing material. The hardening process of the adhesive can thereby be accelerated, so that the length of the device remains within reasonable limits.

Preferably, the first and second regions are directly adjacent to each other.

In this connection, "direct" means that there is a maximum spacing of 0.2m in the direction of travel of the mat of compacted material between the last screen belt turning roll of the steam application zone and the first screen belt turning roll of the hardening zone. In this way, the energy loss of the heat necessary for hardening in the device into the surroundings is avoided.

It is particularly advantageous to provide a slide between the two screen belt deflection rollers, which slides the wedge between the screen belt deflection rollers and the press material mat or screen belt.

If the press-on material mat is guided via a wedge between two screen belt deflection rollers, there is the risk that the press-on material mat under pressure expands and causes damage or suffers damage itself in the transition from the steam application zone to the hardening zone. This is critical in particular in the transition region from the first region to the second region and can therefore be used here in a meaningful manner, since no further support is present in this region, for example by means of a shaping plate. In order to prevent the mat from expanding and thus damaging, a slide extending over the width of the mat of pressing material is arranged between the screen belt deflection rollers. In direct contact with the press material mat, the press material mat is then guided over a transition of at most 0.2m long on the seat surface. The carriage has a flat sliding surface facing the pad of press material and the side walls of the carriage are shaped such that they adapt to the contour of the turning roll. In cross section, the carriage can be triangular, for example, wherein the oblique side (sliding side) is straight and the waist side can be curved to adapt to the contour of the steering roller.

With regard to the method, the object of the invention is achieved by the features of claim 8 and in particular by the use of at least four circumferential screen belts, wherein at least two screen belts act on the mat of press material in the region of the first zone and wherein at least two screen belts act on the mat of press material in the region of the second zone.

The further method claims likewise correspond to the device claims and utilize the advantages mentioned.

Drawings

In the following, the invention is explained in more detail on the basis of the drawings showing embodiments. In the drawings:

figure 1 shows a schematic illustration of a first embodiment of the invention,

figure 2 shows a schematic illustration of a second embodiment of the invention,

figure 3 shows a schematic illustration of a third embodiment of the invention,

fig. 4 shows a schematic illustration of a detail with a carriage acting as a bridge between the region 1 and the region 2.

Detailed Description

Fig. 1 shows a schematic side view of an apparatus for manufacturing an insulating plate according to the invention. Between the upper endless screen belt 5a and the lower endless screen belt 5d, a mat of compacted material, at least partially made of lignocellulosic, binder-moistened granules, is treated in a first zone Z1 and a second zone Z2. The separation of the zones is schematically shown in all figures by vertical dashed lines.

In the past, the mat of compacted material was heated in an upper and lower screen-encircling device with steam or a steam-air mixture and finally hardened by heat application via a calibrating plate. Only speeds up to the tensile strength limit of the screen can be achieved.

Now, it is seen in fig. 1 that two further endless screen belts are arranged within the endless upper screen 5a and the endless lower screen belt 5 d. In the upper part of the apparatus, the screen belts have the reference numerals 5b and 5c, and in the lower part of the apparatus, the screen belts have the reference numerals 5e and 5 f. All the circulating screen belts 5a-5f have a respective drive, which is realized via driven deflection rollers 8.

The majority of the frictional power to be overcome by the drive is generated in the front part of the apparatus, in which the press material mat 2 springs back in the inlet 9 as a result of the compression until the steam application devices 4a and 4b soften the press material mat. With the present invention, this zone Z1 results in two respective endless screen belts, which are driven individually. The tensile load on the long circumferential screens 5a and 5d is thereby reduced. The same applies to zone Z2, in which the mat of compacted material 2 is hardened. Here, separate circulating and driven sieve belts 5c, 5f are provided, which apply a part of the conveying power, both above and below the press material mat 2. Overall, significantly higher speeds can be achieved with this arrangement.

In zone 1, that is to say in the encircling screen belts 5b and 5e, there are likewise provided devices 4a, 4b for applying steam. There, the steam penetrates through the surrounding screens 5a and 5b or 5d and 5e into the mat of compacted material 2 and liquefies. The remaining steam and the remaining air which are discharged can be discharged via the suction devices 6a and 6 b.

A further device 4c for steam application can be provided, for example, at the inlet 9. The resulting wet surface also reduces the friction on the screen belts 5a and 5d, which leads to additional energy savings.

In zone 2, therefore, there is provided a very effective calibration plate 3, which may be heatable via different systems. Here, for example, a pipe provided with a heating liquid, an induction heating device, an electric heating device or a steam heating device is considered, wherein the steam heating device can also release steam directly to the press material mat in the hardening zone.

At the outlet of the device, the press material mat is cooled by passing cooled air 14 from the surroundings through the press material mat 2 by means of a suction device 6c in the form of an air cooling device 11.

In fig. 2 and 3, the illustration of the press material mat and the driven deflection roller and the inlet is omitted for reasons of clarity. Fig. 2 is now distinguished from fig. 1 as a possible second exemplary embodiment in that the circumferential screens 5c and 5f are omitted. Such possibilities exist in insulation panel scenarios, which do not expect to cause large losses due to the division of the drive over at least four surrounding driven deflection rollers.

As a further embodiment, fig. 3 shows that a long circulating sieve according to the invention can also be dispensed with completely. Thus, only the screen belts 5b and 5c are shown in the upper part of the apparatus.

There, a gap is thus naturally created between zone 1 and zone 2, because the deflection rollers 7 of the screen belts 5b and 5c can be brought into close abutment with each other, so that a slide 13 extending over the width of the mat of compacted material 2 is introduced into the wedge 12 between the two deflection rollers 7 and the mat of compacted material in both zones 1 and 2. As a result, the mat of pressing material does not expand in the gap as long as possible less than 200mm and does not cause damage.

List of reference numerals

Apparatus for manufacturing insulating panels

2 pressing material pad

3 shaped plate

4a, 4b, 4c device for steam application

5a, 5b, 5c, 5d, 5e, 5f screen belt

6a, 6b, 6c suction device

7 steering roller

8 driven steering roller

9 inlet

10 entry height adjustment device

11 air cooling device

12 wedge-shaped part

13 sliding seat

14 cooling air supply part

Z1, Z21 and zone 2