CH661243A5 - Annex to the pressing fibre cement panels. - Google Patents

Abstract

1. Apparatus for the compression of fibrous-cement slabs (1), which initially lie in the form of a fibrous-cement mat centrally on a pressing base (2), with symmetrically arranged lateral handling surfaces (3) and between the latter, and are transported into a compression station (4) of a press (5) and thereafter are transported as compressed plates out from the compression station on the pressing base by means of a conveying device (6), which to receive the pressing bases (2) with the plates (1) has two conveyor belts (8) running parallel to each other along the compression station (4), on which belts the pressing bases (2) come to be transported lying freely, a drive device (10) being associated with the belts (8), characterized in that the relative distance and the width of the belts (8) correspond to the distance and the width of the handling surfaces (3) of the pressing bases, and that the belts (8), which are both identical, are provided with engagement sections (9) which are fixed to the belt and follow each other at regular intervals along the length of the belts, the drive device (10) having engagement elements (11) which are constructed corresponding to the engagement sections (9) and engage in the engagement sections, and being designed for synchronous movement of the two belts (8), i.e. at the same speed at the same time.

Description

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PATENT CLAIMS have their own, specifically commanded and adjustable DC motor (M).

1. Plant for pressing fiber cement panels (1), which 10. Plant according to claim 2, characterized in that first in the form of a fiber cement mat in the middle of a press for a pair of toothed belts (8) with a pair of drive gear wheels (2) Symmetrically arranged lateral manipulators 5 (11) are provided, which are located between a common drive area (3) between them and are driven synchronously into a shaft coupled to a motor (M). Pressing point (4) of a press (5) and then as a pressed 11th system according to claim 1, characterized in that plates on the pressing base transport the conveyor belts (8) from the pressing point out of the way by means of a transport device (6) , which aggravate the pressing pads (2) to be transported, characterized in that for receiving the pressing pad io the manipulation surfaces (3) facing surface (2) with the plates (1) the transport device (6) two together, also the manipulation surfaces (3) on their side facing the other parallel parallel transport press belts (4) trans transport belts (8) has a corresponding port belts (8), the relative spacing and width of which have the area formed, for non-slip contact between spacing and the width of the manipulation areas (3) of the press see the conveyor belts (8) and the press pads (2). documents that are exposed on the belts for transport 15

come, match which tapes are both the same, with theirs

Length after one another at regular intervals,

The invention relates to a system for pressing tapes (8), a drive device (10) is assigned, which fiber cement plates, which first form the fiber engagement plates (9) in the form of a fiber cement Appropriately trained engagement elements (11) which engage in the mat in the middle on a press base with symmetrically arranged engagement points, neten, lateral manipulation surfaces lie between them, the drive device (10) for synchronously moving and in to a press point of a press and then as two bands (8), d. H. at the same speed on the same pressed plates on the press base from the pressing point Zeit. can be transported out by means of a transport device.

2. Plant according to claim 1, characterized in that the 25 in a continuous manufacturing pro conveyor belts customary today are designed as toothed belts (8), the cessation of fiber cement panels being a prefabricated fiber regularly arranged teeth (9) forming the engagement points, cement mat on one delivered press release implemented. The support, which is loaded according to the pitch and tooth shape of the toothed belt, is provided for a press in a pressing point in a pressing point, which drives the toothed gear wheels (11), which are positioned and pressed there with the mat. Form engaging elements of the drive device. 30 After the pressing process, the pad is pressed with the

3. Plant according to claim 2, characterized in that the plate is transported out of the pressing point.

only one side of the toothed belt (8) is toothed, and its other then the plate is removed from the base, side is smooth, and that the toothed belt with its toothed and the empty base is back to the beginning of the system side of a press base to be transported ( 2) transported facing to be there again with a fiber to be pressed, which is transported exposed on the toothed belt. 35 cement mat to be loaded. Usually circulate one

4. Plant according to claim 3, characterized in that the number of press documents in the process with a Geschwinder toothed belt (8) for driving by means of two pulleys, for example, of 3 m / sec and in a sequence of to (12) to the drive gear (11) forming a snare, example 12 seconds. Such a system works auto-arranged. matically, and for safety reasons, human intervention

5. Plant according to claim 3, characterized in that 40 lent hand excluded. It is an uninterrupted one of the toothed belts (8) made of reinforced plastic, and that requires production around the clock. Accordingly, the smooth side of the toothed belt has good sliding properties with respect to a guide support and the reliability of the transport of the press support (13) for the toothed belt, that is to say high demands on the loaded press support

6. Plant according to claim 1, characterized in that the provided, in particular what an exact positioning on the transport device (6) is divided into three sections, 45 mentioned treatment or manipulation stations of a section leading through the press (5) (61 ) concerns a waiting facility. The transport is also difficult upstream to station (62) and ensure a parking station (6) downstream, since the circulating press documents are mainly, which three sections in their area each affect a couple of the borrowed during the pressing and more or conveyor belts ( 8), and each section has to be deformed with less, for example, no longer ideally plan, transport-own, specially commanded and adjustable drive must be prepared.

direction (IO1, IO2,103). An attempt was made to use chain tugs

7. Plant according to claims 1 or 6, characterized by transport to solve. These prove to be unsatisfactory, a press (5) with two pressing paths arranged one above the other, which are different and mainly due to wear (41, 42), and in that each of the pressing points has an unpredictable yet increasing play between its own transport device (6 ) assigned. 55 chain links is a pointwise parallel synchronization of a pair

8. Plant according to claim 7, in which the transport devices of the drag chains are technically unreachable. Furthermore, each device (6) has a waiting station (62) and a parking station (63) with the often uneven, damaged documents by means of lower and upper pairs of conveyor belts, pleated grippers are held to the chain hoists. Characterized in that the upper pairs of transport-precise positioning is hardly accessible in these transport devices belts (8) in the stations so that they are laterally displaceably mounted, the documents are often tilted relative to one another, in order to increase the relative spacing of the banks - the intended transport route. For all these reasons, the (8) is over the width of the press pad (2), so that the process flow is disturbed, and there are interruptions to the increased distance between the press pad (2) until the damage or the production The cause of the damage can be transported through in the vertical direction and that is ben.

to this transport at the stations lifting devices (21) 65 Similar difficulties also arose when one was provided. • sought the transport device with usual conveyor belts

9. Plant according to one of claims 1 to 8, to be provided. Here, a parallel synchronous run of a belt was characterized in that the drive devices (10) each with a pair, mainly because of unavoidable slippage between

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the drive and the belt not to be reached. Even when starting and braking, the documents slipped or tilted, which made precise positioning impossible.

Finally, loading wagons moving back and forth between two stations are also possible, as are known, for example, from DE-OS 3146 813. This transport device appears to be technically complex.

It is an object of the invention to propose an improved transport system for a plant of the type described in the introduction, compared to the previously known. In particular, tilting or slipping of the press documents to be transported is to be avoided, thereby ensuring their exact positioning in the individual treatment or manipulation stations without bruising. The transport device should be relatively simple and also applicable for systems with presses with two pressing points arranged one above the other.

To achieve this object, it is proposed according to the invention that the transport device has two transport belts running parallel to one another along the pressing point in order to hold the pressing documents with the plates,

whose relative spacing and width correspond to the spacing and the width of the manipulation surfaces of the press pads which are exposed for transport on the belts, which belts, both of the same length, are provided with their length along the regular spacing of the successive, fixed points of engagement which are stationary A drive device is assigned to tapes, which has engagement elements designed to engage the engagement points and engage the engagement points, the drive device for synchronously moving the two tapes, i. H. at the same speed at the same time.

This results in a punctually synchronous running of the two conveyor belts relative to each other, so that tilting cannot occur and trouble-free transportation with precise positioning in the respective station is achieved.

A preferred embodiment is given in that the conveyor belts are designed as toothed belts, the regularly arranged teeth of which form the engagement points, the pitch and tooth shape of the toothed belts being provided in accordance with toothed drive gearwheels which form the engagement elements of the drive device.

Such timing belts are available on the market and the transport device equipped with them works reliably and practically maintenance-free.

A system according to the invention and its advantages are described and explained in more detail below.

The description refers to the following drawing figures:

Figure 1 shows a plant provided with transport devices according to the invention for pressing fiber cement panels schematically from the side.

Figure 2 shows a detail of the transport device.

Figure 3 shows a waiting station of the transport device.

The system shown in FIG. 1 is used to press fiber cement boards 1. First, in the form of a fiber cement mat, these are, as shown in FIG. 2, on a press base 2 which has lateral manipulation surfaces 3 arranged symmetrically in parallel. The plate 1 thus lies between the manipulation surfaces 3. The base 2 is perforated in the area covered by the plate 1, for removing the liquid to be pressed out of the mat during pressing. When pressing corrugated fiber cement boards, the base 2 is corrugated in this area. The manipulation areas 3 are each flat and lie in the same plane.

The base 2 with the plate 1 is closed by means of a transport device, which is generally designated 6

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a pressing point 4 of a press 5, and after the pressing, when the plate 1 is finished pressed, the base 2 with the plate 1 is transported out of the pressing point 4.

5 The pressing point is formed by pressing stamps 7, which cover the format of the plate 1, so that the manipulation surfaces 3 of the base 2 lie outside and parallel along the pressing point when the plate 1 with the base 2 is positioned in the pressing point 4.

10 To accommodate the individual press documents 2 with the plates 1, as is particularly clearly shown in FIG. 2, the transport device 6 has two conveyor belts 8. They run parallel to each other along the pressing point 4 through the press 5. The distance between the belts 8 and their 15 width correspond to the relative distance and the width of the manipulation surfaces 3 of the pressing pads 2. The length of the belts 8, both the same, with im regular spacing between successive, fixed to the belt 8 engagement points 9. These conveyor belts 8 are assigned a drive device 10, which has the engagement points 9, which are designed accordingly and engage in the engagement points engaging elements 11. The drive device 10 is designed to move the belts 8 synchronously. It thus serves to move the belts 8 at the same speed and at the same time.

As shown in this example and indicated in FIG. 2, the conveyor belts are designed as toothed belts 8, the teeth 9 of which are regularly arranged in length and form the engagement points. The drive device 10 has a drive gear 11 assigned to each toothed belt 8, which is toothed according to the pitch and tooth shape of the toothed belt 8 and forms the mentioned engagement element. As can also be seen from FIG. 2, only one side of the toothed belt 8 is toothed and the other side is smooth. It can be seen that the toothed side of the 35 toothed belt 8 faces a press base 2 to be transported, which is transported exposed on the toothed belt 8.

In order to achieve an absolutely slip-free drive of the toothed belt 8, the toothed belt 8 is guided by means of two deflection rollers 40 12, so that it forms a loop around the drive toothed wheel 11. There is a loop in the range of 180 °. At the same time, the deflection rollers 12 serve as tension rollers for the toothed belt 8.

It has been shown that a toothed belt made of reinforced plastic 45 is best suited for this transport device. Its smooth side should have good sliding properties compared to a guide pad 13, which is provided for its guidance and is made of plastic, for example. Such a timing belt is available on the market. It is also conceivable to use a liquid film, e.g. B. to provide a hydrostatically constructed liquid layer between the toothed belt 8 and the guide pad 13 in order to achieve wear-free conditions in the present case.

The synchronization of the two toothed belts, which form a cooperating pair, is simply achieved in that the associated drive gear pair is driven by a common shaft which is coupled to a drive motor M.

In this described transport device 60, the two toothed belts 8 move absolutely synchronously and in conformity. This means that there is no relative instantaneous displacement of one toothed belt relative to the other in the pair. The relatively heavy press pad 2 with the plate 1 is free but non-slipping on the toothed belt and 65 cannot be shifted and / or tilted due to the momentary delay or advance of one belt relative to the other and can thus be positioned exactly at a desired point on the transport route.

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To increase the adhesion between the conveyor belt 8 and the press pad 2, the surfaces of the conveyor belts 8 that face or come into contact with the manipulation surfaces 3 of the press pads 2, in the case of the toothed belt, this is sufficient only for the manipulation surfaces with a non-slip surface. Then a non-slip fit of the press pad on the belts is safely achieved.

In order to be able to regulate the transport differently and as desired in individual sections of the transport route, the transport device 6 is divided into three sections: a section 61, which leads through the press 5, is preceded by a section 62, which serves as a waiting station, and a section 63 downstream which serves as a parking station. Each of the three sections 61, 62, 63 has a pair of conveyor belts 81, 82, 83 in its area. Each pair is separated from the other in terms of drive and is equipped with its own, specifically commanded and adjustable drive device IO1, IO2, 103. Each drive device is driven by its own, specifically commanded and adjustable DC motor M.

The system shown in FIG. 1 is equipped with a press 5 with two pressing points 41 and 42 arranged one above the other. This press presses two plates at once in one work cycle. A transport device 6 is assigned to each of the pressing points 41 and 42. Thus, with regard to the press, the transport of the press documents 2 with the plates 1 takes place simultaneously in the same cycle in a lower and an upper floor. The upper floor is shown in dashed lines in the drawing.

Prefabricated fiber cement boards are placed on the press pads in a charging station 14. The pad lies on a conveyor belt 15 of the station and waits there until the mat is put on.

The finished pressed fiber cement boards are removed from the press documents into a removal station 16, on the left in the picture, lying on a conveyor belt 17 of the station. The conveyor belts 15 and 17 of the loading and unloading stations are at the level of the lower transport floor mentioned above.

Every second press pad coming from the charging station is raised from the level of the lower level to the level of the above-mentioned upper level and, after pressing, is lowered to the level of the lower level. This happens in the area of the waiting station 62 or in the area of the parking station 63. A waiting or parking station serving this purpose is shown in more detail in FIG. 3. The conveyor belts 8 of the upper floor are arranged on a frame 20 so as to be laterally displaceable, so that the relative distance between the belts can be increased over the width of the press base. If the belts are in this spread position, the press pad can be transported between them in the vertical direction. This vertical transport is provided by a lifting table with a horizontal table top 21, which can be moved by means of a lifting device 22 into an upper position above the level of the upper level and into a lower position below the level of the lower level.

The system works in the following operational steps:

A first press pad was loaded with the mat lying on the conveyor belts 15 of the charging station.

After simultaneous movement of the belts 15 and the adjoining belts 82, the base is positioned on the lower belts 82 in the waiting station 62.

The table top 21 is in its lower position.

The upper conveyor belts of the waiting station 62 are spread and are in the position shown at the top right in FIG. 3, so that the underlay can be transported between them.

The table top 21 moves to its upper position and lifts the support above the level of the upper floor.

The upper bands return and are below the manipulation areas of the underlay. This position can be seen in the top left of Figure 3.

The table top 21 returns to its lower position and the first mat comes to rest on the upper belts.

A second, meanwhile loaded document comes to the lower level of the waiting station 62.

The pressing points 41 and 42 of the press 5 open.

By simultaneously moving the conveyor belts 82 and 81 of the two floors, the first and the second loaded underlay are positioned in the relevant pressing points.

The pressing process is completed and the pressing points 41 and 42 are opened.

By simultaneously moving the belts 81 and the adjoining belts 83 of the two floors, the first and the second underlay are simultaneously moved into the parking station 63 and positioned there. At the same time, the belts 82 and 81 on the two floors transport the next two waiting documents to the pressing points 41 and 42.

The support located on the lower level is moved into the unloading station 16 by simultaneously moving the lower belts 83 and the adjoining belts 17 and the pressed plate is removed from the support.

The empty pad is transported back to the charging station 14 via a transport path.

The table top 21 in the parking station 63 goes into its upper position and thus lifts the surface previously lying on the upper belts. ... -

The upper belts thus relieved are spread apart and the table top 21 with the press pad lying on it then returns to its lower position. The pad is thus transferred to the belts 83 on the lower level of the parking station 63.

The upper belts return to their closer position and are thus ready to take over another press pad.

By simultaneously moving the lower belts 83 and the adjoining belts 17, the base which has been moved from top to bottom is moved into the unloading station, and after removal of the fiber cement board, the empty base is transported back towards the loading station 14 via the above-mentioned transport path.

The system works continuously and the described transport of the documents is regulated in accordance with the cycle of the press 5. The loading and unloading of the documents takes place in stations 14 and 16 in half a cycle. The transfer of every second document from one floor to the other in stations 62 and 63 also takes place within the period of half a cycle.

The transport devices in stations 14 and 16, i.e. H. the conveyor belts 15 and 17 and the drive devices 18 and 19 are also designed in accordance with the described invention. With the same means, the return of the empty documents can be solved.

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1 sheet of drawings