EP0885100A1 - Beschickungsvorrichtung für eine plattenpresse - Google Patents
Beschickungsvorrichtung für eine plattenpresseInfo
- Publication number
- EP0885100A1 EP0885100A1 EP97951060A EP97951060A EP0885100A1 EP 0885100 A1 EP0885100 A1 EP 0885100A1 EP 97951060 A EP97951060 A EP 97951060A EP 97951060 A EP97951060 A EP 97951060A EP 0885100 A1 EP0885100 A1 EP 0885100A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- loading
- workpiece
- press
- machined
- conveyor belts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/20—Moulding or pressing characterised by using platen-presses
- B27N3/22—Charging or discharging
Definitions
- the invention relates to the field of processing workpieces in a plate press, in particular the loading of this plate press for the production of tempered chipboard.
- This is of particular interest as to how such a workpiece, for example the chipboard to be processed, is deposited in the press since the transfer from the loading device to the press must be such that the workpiece to be machined occupies a position that is as precisely defined as possible on the press.
- this is achieved in that the workpiece to be machined is not placed over the entire surface of the press, but first with one edge and then with the other edge, in order to avoid air cushion-like effects which lead to blurring of the workpiece on the press lead and thus worsen the exact positioning mentioned or make it impossible.
- DE 28 47 273 C3 describes a generic loading device in which clamping strips are provided as holding devices, which are opened and pulled outwards in the storage position of the workpiece to be processed, so that the workpiece is pushed down into the press (usually on the lower heating plate) can fall.
- the friction occurring when the workpiece is put down from these open clamping strips is to be prevented or at least minimized by providing additional depositing rollers on which the workpiece to be machined is placed when the loading bars are moved apart.
- Another system (DE 35 03 156 Cl) provides for the omission of additional holding devices, such as, for example, terminal strips, in which case the workpiece to be machined lies directly on the loading bars, which are provided with holes through which during the transport process the workpiece to be machined is sucked in and via which an air flow is blown upwards towards the workpiece during the depositing process, so that the workpiece floats on an air cushion.
- additional holding devices such as, for example, terminal strips
- the loading device consists of belt transports which are moved into the press space, so that the workpiece to be processed is carried on the longitudinal edges by the belts of this belt transport system and is conveyed into the press.
- the two conveyor belts are pulled outwards so that the workpiece can fall down onto the lower heating plate.
- rollers are swung up on the inside of these conveyors, so that the friction between belt transport and workpiece is reduced.
- this system is very complex, since large masses (conveying devices) have to be moved quickly, which requires a correspondingly large acceleration with corresponding effort and suitable devices.
- the loading devices described have in common that despite the additional devices mentioned, it is not or not sufficiently ensured that no sliding friction occurs between the workpiece and the specific system used for conveying and depositing, which engages under and supports the workpiece. With the three systems mentioned at the beginning, it is necessary that the workpiece is always placed on one side, so that no air cushions form on which the workpiece can blur. In all known systems, this has the consequence that the loading spars have to be moved outwards one after the other when the workpiece is placed down, ie the second loading spar can only then its release movement begins when the first loading spar has already left the area of the workpiece and the corresponding edge has reached the press.
- the invention is therefore based on the object of developing the generic loading device so that no sliding friction occurs when the workpiece is placed, for example a layer package on the heating plate, furthermore this loading device is to be constructed mechanically simple.
- these conveyor belts are mechanically connected to the To couple the movement of the loading spars in such a way that the peripheral speed of the two deflecting rollers which carry the conveyor belt is selected such that when the loading spars move, the upper run of the conveyor belts moves in the opposite direction at the same speed, so that consequently the absolute speed of a point on the conveyor belt and thus the relative speed, based on the stationary workpiece, is zero.
- the solution according to the invention makes it possible, in particular, to control the two loading bars in such a way that when the workpiece is placed on the lower heating plate of the press, the tilting-like laying movement of the workpiece on the press which is necessary for the reasons explained at the beginning is minimized laterally, so that the desired full-surface contact of the underside of the workpiece with the heating plate is established in the shortest possible time.
- FIG. 2 shows a partial view of a corner area of the loading device according to FIG. 1,
- Fig. 4 is a vertical section through the press with the loading device according to the invention shortly before placing the workpiece on the lower heating plate and
- Fig. 5 is a vertical section corresponding to Fig. 4, when entering the workpiece in the press. Description of the preferred embodiment:
- the loading device according to the invention is used to load a press 10 (Fig. 4.5), of which only the lower part is shown with the lower heating plate 1.
- a press 10 Fig. 4.5
- the workpiece 8 is to be conveyed from its position outside the press and to be deposited there as precisely as possible.
- a holding frame 2 is initially provided, which in its position moved into the press extends to both sides of the lower heating plate 1 and on which the loading device with its individual components is held.
- the essential component of this loading device are two loading bars 3A, 3B which can be displaced parallel to the longitudinal sides of the holding frame 2.
- the loading spar 3A is shown extended, i.e. it does not protrude above the lower heating plate 1
- the loading spar 3B is shown retracted, i.e. it protrudes over the lower heating plate 1.
- To guide the loading bars 3A, 3B they are connected in a known manner to the holding frame 2 by two tubes or rods R, which are mounted in corresponding receptacles S of the holding frame.
- the rods R of the loading spars 3A, 3B carry, on their end pointing towards the inside of the press, holding devices on which the workpiece 8 to be machined rests when both loading spars are in the retracted position (FIG. 5), in which they also hold the workpiece 8 can be transported from a loading station into the press 10.
- the holding devices consist of several conveyor belts 4, the upper run of which is guided over the loading bars 3A, 3B.
- a deflection roller 4A is provided on the outwardly facing narrow side of the loading bars 3A, 3B, on the inwardly facing end face of the loading bars 3A, 3B the conveyor belts 4 are guided via a common drive shaft 5.
- a rack 6A, 6B is mounted on the front end 2A, which meshes with a gear 7A, 7B at the end of the drive shaft 5A, 5B.
- the function of this drive is illustrated in Fig.
- the diameter of the gear 7 is chosen so that the conveyor belts 4 promote against the movement of the loading spars 2 at the same speed as the loading spars move outwards, so that the movement of the loading spars 3A, 3B to no friction between the upper run of the Conveyor belts 4 and the underside of the workpiece 8 leads, regardless of the speed or direction at which the loading bars move.
- a typical sequence of movements of the loading device according to the invention is as follows:
- the holding frame 2 is located outside the press in a loading station, where the loading bars 3A, 3B move under the workpiece in order to be taken over by other conveying devices, for example a roller conveyor.
- the holding frame 2 is retracted into the press 10 until it assumes the desired position in which the workpiece 8 is located above the lower heating plate 1, held by the retracted loading bars 3A, 3B, this position is shown in FIG. 5.
- the depositing of the workpiece 8 on the lower heating plate 1 begins in that the two loading bars 3A, 3B are extended with a slight time delay (large arrows in FIG. 4), the upper run according to the above-described forced coupling of the drive of the conveyor belts 4 this conveyor belts moved in the opposite direction (small arrows), at the same speed at which the loading spars are extended, so that no relative movement and therefore no friction can form between the upper run of the conveyor belts on the one hand and the underside of the workpiece 8 .
- the loading spar 3B is slightly ahead of the loading spar 3A, so that the right longitudinal side of the workpiece 8 in FIG.
- the rack and pinion combination described is preferred for the mechanical forced coupling of the conveyor belts 4 with their associated loading bars 3A, 3B, but it is equally possible to achieve this sequence by means of a chain with sprockets or by means of belts and pulleys.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
- Attitude Control For Articles On Conveyors (AREA)
- Veneer Processing And Manufacture Of Plywood (AREA)
- Advancing Webs (AREA)
- Press Drives And Press Lines (AREA)
- Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
- Structure Of Belt Conveyors (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19647480 | 1996-11-16 | ||
DE19647480A DE19647480C1 (de) | 1996-11-16 | 1996-11-16 | Beschickungsvorrichtung für eine Plattenpresse |
PCT/DE1997/002628 WO1998022268A1 (de) | 1996-11-16 | 1997-11-11 | Beschickungsvorrichtung für eine plattenpresse |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0885100A1 true EP0885100A1 (de) | 1998-12-23 |
EP0885100B1 EP0885100B1 (de) | 2002-05-15 |
Family
ID=7811884
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97951060A Expired - Lifetime EP0885100B1 (de) | 1996-11-16 | 1997-11-11 | Beschickungsvorrichtung für eine plattenpresse |
Country Status (6)
Country | Link |
---|---|
US (1) | US6065584A (de) |
EP (1) | EP0885100B1 (de) |
AT (1) | ATE217569T1 (de) |
CA (1) | CA2242427C (de) |
DE (2) | DE19647480C1 (de) |
WO (1) | WO1998022268A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10201413A1 (de) * | 2002-01-15 | 2003-07-24 | Buerkle Gmbh Robert | Verfahren und Vorrichtung zum Beschicken einer Plattenpresse |
DE10325879A1 (de) * | 2003-03-21 | 2004-11-18 | Grob-Werke Burkhart Grob E.K. | Beweglicher Transportbalken |
DE102011008650A1 (de) * | 2011-01-14 | 2012-07-19 | Robert Bürkle GmbH | Verfahren zum Durchführen einer Bandlaufkorrektur bei einem Förderband einer Presse und Presse mit Förderband und Bandlaufkorektur |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2825206C2 (de) * | 1978-06-08 | 1981-10-01 | Maschinenfabrik J. Dieffenbacher Gmbh & Co, 7519 Eppingen | Vorrichtung zum Einbringen, Verpressen und Ausbringen eines Schichtpaketes in eine Heißpresse bzw. aus einer Heißpresse |
DE2825296A1 (de) * | 1978-06-09 | 1979-12-13 | Basf Ag | Verfahren zur quaternierung von organischen farbstoffbasen |
DE2847273C3 (de) * | 1978-10-31 | 1981-10-08 | G. Siempelkamp Gmbh & Co, 4150 Krefeld | Plattenpresse mit einer Vorrichtung zum Beschicken der Presse im Zuge der Herstellung von vergüteten Spanplatten |
DE3001010A1 (de) * | 1980-01-12 | 1981-07-16 | Maschinenfabrik J. Dieffenbacher Gmbh & Co, 7519 Eppingen | Beschick- und entleervorrichtung zum ein- und ausbringen eines presspaketes in eine bzw. aus einer presse |
DE3503156C1 (en) * | 1985-01-31 | 1987-01-02 | Wemhoener Heinrich Gmbh Co | Process and device for feeding short-cycle presses |
DE3914866C2 (de) * | 1989-05-05 | 1996-11-14 | Dieffenbacher Gmbh Maschf | Vorrichtung zum Einbringen, Verpressen und Ausbringen eines Schichtpaketes in eine Heißpresse |
US6009990A (en) * | 1998-01-20 | 2000-01-04 | Davis; William P. | Pallet transfer and clamping unit |
-
1996
- 1996-11-16 DE DE19647480A patent/DE19647480C1/de not_active Expired - Fee Related
-
1997
- 1997-11-11 CA CA002242427A patent/CA2242427C/en not_active Expired - Fee Related
- 1997-11-11 DE DE59707287T patent/DE59707287D1/de not_active Expired - Lifetime
- 1997-11-11 EP EP97951060A patent/EP0885100B1/de not_active Expired - Lifetime
- 1997-11-11 AT AT97951060T patent/ATE217569T1/de not_active IP Right Cessation
- 1997-11-11 WO PCT/DE1997/002628 patent/WO1998022268A1/de active IP Right Grant
- 1997-11-11 US US09/101,553 patent/US6065584A/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO9822268A1 * |
Also Published As
Publication number | Publication date |
---|---|
CA2242427A1 (en) | 1998-05-28 |
DE19647480C1 (de) | 1998-05-07 |
DE59707287D1 (de) | 2002-06-20 |
CA2242427C (en) | 2003-02-11 |
ATE217569T1 (de) | 2002-06-15 |
US6065584A (en) | 2000-05-23 |
EP0885100B1 (de) | 2002-05-15 |
WO1998022268A1 (de) | 1998-05-28 |
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