EP3318379B1 - Press device - Google Patents

Description

The invention relates to a pressing device for pressing lamellae into a lamellar carpet according to the preamble of claim 1.
Such a pressing device is from the EP 1 762 353 A1 known.

It is known to form lamella carpets of wood slats. For this purpose, provided on a long side with glue wood slats are placed on a press table and pressed by means of pressure pieces transversely to its longitudinal direction against a stop. Since the pressure pieces extend due to friction and the like. Undefined, the individual cylinders must be rigidly connected to each other via a bar (synchronized). On the press table usually two or more lamellar carpets are formed simultaneously. Since the lamella carpets often do not have the same width, there is a problem with a rigid bar that the plungers press the one plate carpet with sufficient force against a stop, the other, narrower plate carpet can not compress with sufficient force.

The invention has for its object to form the generic pressing device so that the lamellar carpets are reliably pressed even with different width of the pressure pieces. This object is achieved according to the invention in the generic pressing device with the characterizing features of claim 1.

In the pressing device according to the invention, the drive units are releasably connected to the synchronizing rail. Should the slats of the Lamella carpet be pressed, the drive units and the synchronizing rail are moved in the direction of the lamella carpets. As soon as the pressure pads come into contact with the respective lamellar carpet, they press it against a stop, whereby the lamellas within the lamella carpet are pressed firmly against each other. If one of the lamellar carpets is narrower, the pressure pads associated with this lamella carpet do not yet come into contact with it when the other pressure pads are already resting against the wider lamellar carpet and compressing it. The drive units, whose pressure pads have not yet come to rest on the narrower lamellar carpet, continue to move the synchronizing rail. As soon as the force exerted by these drive units on the synchronizing rail is greater than the holding force between the synchronizing rail and the drive units, the pressure pads of which lie against the wider lamellar carpet, these drive units are released from the synchronizing rail. The released drive units continue to press the wider lamellar carpet firmly against the stop, while the drive units whose pressure pads have not yet come to rest on the narrower lamellar carpet are moved further together with the synchronizing rail. As soon as the corresponding pressure pieces come into contact with the narrower lamellar carpet, this too is pressed firmly against the stop by the pressure pieces.

In this way, different width slats carpet can be pressed properly with the pressing device. Since the drive units for the plungers are detachably connected to the synchronizing rail, those drive units whose plungers are already present on the wider fin carpet, are overcome by overcoming the holding force of the synchronizing rail. It is moved by the other drive units in the direction of the lamella carpets until the other pressure pieces come to rest on the other narrow lamellar carpets. If several different on the press table wide lamella carpets lie, then these lamellar carpets are pressed in the manner described successively by the corresponding pressure pieces against the stop. In this case, successively those drive units, the pressure pads are already applied to the lamellar carpet, released from the synchronizing. For pressing the different width lamellar carpets on the press table thus no different pressing devices are required. With a single pressing device, the differently wide lamellar carpets can be pressed perfectly, so that their lamellae are firmly joined together.

Advantageously, the holding force between the drive units and the synchronizing rail is formed by a magnetic force. It is set so that the drive units, the pressure pads are already applied to the lamellar carpet, are released from the synchronizing, which are transported with the other drive units whose pressure pads are not yet applied to the lamellar carpet.

So that the drive units can be displaced reliably during the pressing process, each drive unit is provided with at least one guide which is fixedly connected to the pressure piece and releasably connected to the synchronizing rail.

This guidance of the drive units is advantageously coupled by means of the holding force to the synchronizing rail.

In a particularly simple embodiment, at least one anchor plate is provided on the guide, which cooperates with at least one magnet provided on the synchronizing rail. If the drive unit stops, because the pressure piece assigned to it comes into contact with the lamellar carpet, then the magnet of the synchronizing rail, which has been further displaced by the other drive units, releases from the armature plate of the now fixed drive unit.

The anchor plate can of course also be provided on the synchronizing rail and the magnet on the guide of the respective drive unit.

It is advantageous if the magnet is formed by an electromagnet. The electromagnet has the advantage that individual drive units can be deactivated. Instead of an electromagnet, a permanent magnet can also be used, which also makes it possible for the synchronizing rail to be uncoupled from the drive units which are no longer moving.

The drive units are in addition to the guide also provided with at least one cylinder in which a connected to the pressure piece piston rod is slidably mounted. With it, the pressure pieces can be moved properly during the pressing process.

Advantageously, all drive units are connected to a common pressure source. As a result, a very simple operation of the drive units is possible.

Advantageously, the drive units are provided with Pneumaktik- or hydraulic cylinders.

The drive units and the synchronizing rail are provided so that the drive units exert a compressive force on the synchronizing rail. As a result, the synchronizing rail is reliably taken along by the drive units.

The plungers are advantageously at a small distance next to each other, so that they can be moved properly independent of each other during the pressing process.

The subject of the application results not only from the subject matter of the individual claims, but also by all the information and features disclosed in the drawings and the description. They are, even if they are not the subject of the claims, claimed as essential to the invention, as far as they are new individually or in combination over the prior art.

Further features of the invention will become apparent from the other claims, the description and the drawings.

Fig. 1

in Draufsicht eine erfindungsgemäße Pressvorrichtung, mit der Lamellenteppiche verpresst werden,

Fig. 2

die Pressvorrichtung gemäß Fig. 1 in perspektivischer Darstellung von oben,

Fig. 3

in perspektivischer Darstellung von unten die Pressvorrichtung gemäß Fig. 1,

Fig. 4 bis Fig. 6

verschiedene Stellungen eines Druckstückes der erfindungsgemäßen Pressvorrichtung.

The invention will be explained in more detail with reference to an embodiment shown in the drawings. Show it

Fig. 1

in plan view, a pressing device according to the invention, are pressed with the lamella carpets,

Fig. 2

the pressing device according to Fig. 1 in perspective from above,

Fig. 3

in a perspective view from below of the pressing device according to Fig. 1 .

Fig. 4 to Fig. 6

different positions of a pressure piece of the pressing device according to the invention.

The pressing device described below serves to press on a press table 1 lying slats 2 against a stopper 3. The slats 2 consist in a known manner from each other with their longitudinal sides adjacent and glued together slats 4, which preferably consist of wood. On the press table 1 several lamellar carpets 2 are pressed against the common stop 3 next to each other. For this purpose, a pressing device 5 provided, the adjacent plate-shaped pressure pieces 6 has. They attack on the side facing away from the stop 3 ends of Lammellenteppiche 2 and press them against the stop. 3

The pressing device 5 has a rail 7 forming a synchronizing rail, which extends over the length of the pressing device 5. The rail 7 in the exemplary embodiment L-shaped cross-section, but can also have any other cross-sectional education. The rail 7 is mounted on guides 8, which are distributed over the length of the rail 7. They are parallel to each other and can have any suitable cross-sectional shape.

The guides 8 each sit on a console 9. As the drawings show, the brackets 9 are advantageously the same design and have for example triangular shape.

At the pressure pieces 6 facing side of the brackets 9 are extending perpendicular to the rail 7 extending guide plates 10, through which cylinder 11 of drive units 12 protrude, with which the plungers 6 are actuated. Through the guide plates 10 also extend guides 13, which are advantageous round guides. The guides 13 extend parallel to each other and parallel to the guides 8 for the rail 7. For each pressure piece 6, a guide 13 is provided, which is fastened with its one end to an anchor plate 14 and with its other end to a pressure plate 15. The anchor plates 14 are perpendicular from the guides 13 and extend from the guides 13 upwards in the direction of the rail 7. The pressure plates 15 engage under with a transversely projecting at its lower edge bar 15a at the ends facing away from the laminated carpets 2 the plungers 6, which are advantageously screwed to the strips 15a. The pressure plates 15 extend from the pressure pieces 6 upwards. How out Fig. 1 As can be seen, the upwardly extending pressure plates 15 are narrower than the plungers 6. Die Of course, printing plates 15 can also have the same width as the printing pieces 6.

The guides 13 are guided in the guide plates 10, so that the plungers 6 can be moved reliably during the pressing process.

The guide plates 10 are parallel to the pressure plates 15 and the anchor plates 14. As from the Fig. 2 and 4 to 6 shows the guides 8 are for the rail 7 in the area above the guide plates 10th

The cylinders 11 of the drive units 12 are attached to the guide plates 10. In the exemplary embodiment, the cylinders 11 have an outwardly projecting flange 16, with which they are attached to the pressure pieces 6 facing the end of the guide plates 10 fitting. With a projection 17, the cylinders 11 protrude into a passage opening 18 in each case such that the projection 17 rests with its outside on the edge of the passage opening 18. In this way, the cylinder 11 can be fixed in a simple manner positionally accurate to the guide plates 10.

Of course, the cylinders 11 of the drive units 12 can be attached to the guide plates 10 in any other suitable manner.

In the cylinders 11, a piston rod 19 is in each case displaceable, which protrudes from the cylinder 11 and is fixedly connected to the respective pressure plate 15. Within the cylinder 11, the piston rod 19 is provided with a piston 20 which is guided sealed in the cylinder 11.

All drive units 12 are connected to a common drive source. As a drive medium can advantageously be used hydraulic or pneumatic medium. Become with the print medium Therefore, all drive units 12 acted upon simultaneously, so that the plungers 6 are moved synchronously with each other in the direction of lying on the press table 1 lamella carpets 2.

The cylinders 11 and the piston rods 19 are advantageously in the region below the guides 13.

At the armature plates 14 facing side of the rail 7 electromagnets 21 are provided, which cooperate with the armature plates 14. Fig. 4 shows the rail 7 in the starting position, in which the electromagnets 21 can cooperate with the anchor plates 14. In Fig. 3 Some of the electromagnets 21 are designated.

At the beginning of the pressing process, the plungers 26 are in the retracted starting position, which in Fig. 2 is shown. All plungers 6 are at the same height with a small distance next to each other. In this position of the plungers, the piston rods 19 and the cylinder 11 are retracted ( Fig. 4 ).

If the lamellar carpets 2 deposited on the press pass 1 are to be compressed, all the piston rods 19 are pressurized by the common pressure source. This has the consequence that the piston rods 19 are extended uniformly. The guides 13 ensure that the pressure pieces 6 are moved evenly. The electromagnets 21 are turned on, so that they interact with the anchor plates 14 on the guides 13. The rail 7, which extends over the entire length of the pressing device 5, is in this case taken over the guides 13 and the anchor plates 14.

As Fig. 1 By way of example, the spaced-apart lamella carpets 2 do not have the same width. This has the consequence that not all pressure pieces 6 come simultaneously to the ends of the slats 2 facing them to the plant. In the exemplary arrangement as shown in FIG Fig. 1 is shown, come some of the Plungers 6 first on the lamellar carpet 2 'to the system, said pressure pieces 6, the lamellae 4 of this lamellar carpet 2' press firmly against the stopper 3. However, the remaining plungers 6 are still at a distance from the narrower lamellar carpets 2 ", 2"'opposite them.

The drive units 12, whose pressure pieces 6 are not yet in contact with the laminate carpets 2 ", push the rail 7 further in the direction of the laminate carpets Electromagnet 21 of the rail 7 and the armature plates 14 of the platen 2 'resting on the plungers 6 is overcome by the force exerted by the piston rods 19 of the other drive units 12. This has the consequence that the electromagnets 21, the voltage applied to the laminate carpet 2' pressure pieces 6, detach from the armature plates 14 associated with these thrust pieces 6. The magnetic force of the pressing device 5 is adjusted so that the electromagnets 21 can disengage from the armature plates 14 of the thrust pieces 6 resting against the laminate carpet 2 '.

The rail 7 is taken further by the remaining piston rods 19 via the guides 13 until the next pressure pieces 6 come to rest against the next narrower slat carpets 2 "In this position, the pressure pieces which are assigned to the slat carpet 2 '" are still at a distance from this lamellar carpet. The pressure rods associated with these piston rods 19 are therefore further extended from the cylinders 11. The electromagnets 21 of the rail 7, which cooperate with the anchor plates 14 of the lamella carpets 2 "pressure pads 6, detach from these anchor plates, since the pressure exerted by the piston rods 19 on the plungers 6 force is greater than the magnetic force between the electromagnet 21st and the anchor plates 14. The piston rods 19 are then extended so far, even on the lamellar carpet 2 "'the plungers 6 come to rest.

Fig. 5 shows a position in which the electromagnet 21 of the rail 7 has released from the associated armature plate 14 and the rail 7 has been moved further.

Fig. 6 shows the position in which the rail 7 is shifted furthest. The anchor pieces 14 of those drive units 12, which have moved the rail 7 in the position shown, are applied to the corresponding electromagnet 21 of the rail 7.

The voltage applied to each of the lamella carpets 6 are set by the associated drive units 12 under the required pressing pressure.

As Fig. 1 shows by way of example, with the pressure pieces 6 at the same time differently wide lamellar carpets 2, 2 ', 2 ", 2'" against the stopper 3 are pressed. About the rail 7 are starting from the starting position ( Fig. 4 ) First, all the piston rods 19 of the plungers 6 are extended from the cylinders 11, wherein all the electromagnets 21 of the rail 7 with the anchor plates 14 of the guides 13 cooperate. As soon as one or some of the pressure pieces 6 come to bear against the laminate carpet, the corresponding drive units 12 are decoupled from the rail 7 in the manner described. The remaining drive units 12 move the rail 7 and the remaining pressure pads 6 further in the direction of the narrower slat carpets 2 ", 2"'. If a part of the remaining pressure pieces 6 comes to rest on the lamella carpets 2 ", the pressure lugs 6 belonging to the lamellar carpet 2"'are still at a distance from it. The drive units 12 of these pressure pieces 6 push the rail 7 further, the drive units 12 being uncoupled from the rail 7 of the pressure pieces 6 resting against the laminate carpets 2. Finally, the remaining pressure pieces 6 come into contact with the narrower slat carpet 2 '", so that as well he is pressed against the stop 3. In this way, it is ensured that also unevenly wide Lammellenteppiche 2 on the press table 1 are pressed properly. In this case, the pressing device 5 is characterized by a structurally very simple structure. The use of magnetic force does not require expensive and delicate components.

It is even possible to use 21 permanent magnets instead of the electromagnets, which cooperate with the anchor plates 14. In this case, permanent magnets are used whose magnetic force is selected so that they can be released from the anchor plates 14 as soon as the corresponding pressure pieces 6 come to rest on the lamellar carpet and the other pressure pieces 6 of the pressing device 5 must be moved even further towards the other lamella carpets ,

The plungers 6 advantageously have a width which is smaller than the length of the lamellae 4 or the length of the lamella carpets 2. As a result, the lamellar carpet 2 can be replaced by two or more plungers 6 (FIG. Fig. 1 ) are pressed against the stopper 3. The lamellar carpet 2 can be compressed uniformly over its length in this way.

Since the drive units 12 are connected to the common pressure medium source, no complex control is required. The printing medium ensures that the uncoupled from the rail 7 drive units 12 are still under pressure, so that they can put the slat carpet under the required pressing pressure.

Claims (10)

1. A press device for pressing adjacent lamellae which are glued together to form a laminated carpet, comprising pressure pieces (6) which can be displaced by means of drive units (12), characterized in that the drive units (12) are detachably connected to at least one synchronizing rail (7) in such a manner that the drive units (12) are decoupled from the synchronizing rail (7) when a predefined retaining force is exceeded.
2. The press device according to claim 1, characterized in that the retaining force is a magnetic force.
3. The press device according to claim 1 or 2, characterized in that the drive unit (12) is provided with at least one guide (13) which is firmly connected to the pressure piece (6) and detachably connected to the synchronizing rail (7).
4. The press device according to claim 3, characterized in that the guide (13) is coupled to the synchronizing rail (7) by means of the retaining force.
5. The press device according to claim 3 or 4, characterized in that at least one anchor plate (14) is provided on the guide (13) which cooperates with at least one magnet (21) provided on the synchronizing rail (7).
6. The press device according to one of claims 1 to 5, characterized in that the drive unit (12) has a cylinder (11) in which a piston rod (19) connected to the pressure piece (6) is displaceably mounted.
7. The press device according to one of claims 1 to 6, characterized in that all the drive units (12) are connected to a common pressure source.
8. The press device according to one of claims 1 to 7, characterized in that the drive units (12) have pneumatic or hydraulic cylinders (11).
9. The press device according to one of claims 1 to 8, characterized in that the drive units (12) exert a compressive force on the synchronizing rail (7).
10. The press device according to one of claims 1 to 9, characterized in that the pressure pieces (6) are arranged adjacent to one another at a distance.

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