CA2066511C - Apparatus for the emptying of a plate press during the manufacture of laminated sheets - Google Patents
Apparatus for the emptying of a plate press during the manufacture of laminated sheets Download PDFInfo
- Publication number
- CA2066511C CA2066511C CA002066511A CA2066511A CA2066511C CA 2066511 C CA2066511 C CA 2066511C CA 002066511 A CA002066511 A CA 002066511A CA 2066511 A CA2066511 A CA 2066511A CA 2066511 C CA2066511 C CA 2066511C
- Authority
- CA
- Canada
- Prior art keywords
- press
- plate
- laminated sheet
- conveyor tray
- plate press
- 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.)
- Expired - Fee Related
Links
- 238000004519 manufacturing process Methods 0.000 title abstract description 8
- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 7
- 239000011093 chipboard Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000011094 fiberboard Substances 0.000 description 2
- 241000448280 Elates Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B7/00—Presses characterised by a particular arrangement of the pressing members
- B30B7/02—Presses characterised by a particular arrangement of the pressing members having several platens arranged one above the other
- B30B7/023—Feeding or discharging means
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/32—Discharging presses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/18—Handling of layers or the laminate
- B32B38/1858—Handling of layers or the laminate using vacuum
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
- Press Drives And Press Lines (AREA)
- Discharge By Other Means (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
- Stacking Of Articles And Auxiliary Devices (AREA)
- Veneer Processing And Manufacture Of Plywood (AREA)
Abstract
An apparatus for the emptying of a plate press during the manufacture of laminated plates, the plate press having a lower press plate and an upper press plate, includes an arrangement for the picking-up of fully pressed laminated sheets at the discharge side of the opened plate press to form an entry mouth between the lower press plate and the laminated sheet, and a conveyor tray which is insertable into the entry mouth to thereby pick-up the laminated sheet, which is removable from the opened plate press while supported on the conveyor tray. A suction lifter arrangement is provided at the discharge side of the plate press and includes suction lifters which are movable into the opened plate press and lowerable onto a fully pressed laminated sheet in the press. The laminated sheet is lifted by way of the suction lifters to form the entry mouth. A laminated sheet receiving table is positioned at the discharge side of the plate press and is hoistable or lowerable. The conveyor tray while supporting a picked-up laminated sheet is movable over the laminated sheet receiving table and the laminated sheet is positioned onto the laminated sheet receiving table or onto laminated sheets already supported thereon by a reverse movement of the conveyor tray. The suction lifters act on the surface of a fully pressed laminated sheet, but only in a peripheral region and only for a very short time so that disturbances of the surface structure of the sheet are substantially prevented.
Description
Anyaratus for the emptyin~ of a elate vress during the manufacture of laminated sheets The invention relates to an apparatus for the emptying of a plate press during the manufacture of laminated sheets, which plate press has a lower press plate and an upper press plate.
The apparatus includes an arrangement positioned at the discharge side of an opened plate press for the pick-up of fully pressed laminated sheets. The fully pressed laminated sheets are lifted to form an entry mouth between the.iower press plate and the laminated sheet and a conveyor tray which is movable into the entry mouth to receive the fully pressed laminated sheet so that the sheet can be removed from the opened plate press while supported on the conveyor tray. The laminated sheets may be decorative laminated sheets or technical laminates or similar sheets, for example, improved chip boards or fiber boards. It is understood that the sides of the press plates facing the material to be pressed must be appropriately constructed for the manufacture of the respective type of sheets produced. The term "conveyor tray" defines an arrangement which is used for the loading and emptying of a plate pres s in the manufacture of chip boards, fiber boards or similar material to be pressed, but also in the manufacture of laminated sheets. This arrangement includes a frame and a generally light conveyor belt corresponding in width to the width of the frame, which conveyor belt is endless or can be wound and unwound. During the charging of a plate press, the material to be pressed is appropriately deposited onto the conveyor tray and, while supported on the conveyor tray, transported into the opened plate press with the conveyor belt at a stand still.
The material to be pressed is then deposited onto the lower press plate during the removal of the conveyor tray from the opened plate press, whereby the movement of the conveyor belt is appropriately coordinated with the removal of the conveyor tray so that no relative movement takes place between the conveyor belt and the press plate onto which the material to be pressed is deposited, and also between the conveyor belt and the material to be pressed. This manner of driving the conveyor belt is called a synchronous drive. Since a relative movement between the conveyor belt and the press plate is prevented, a very gentle depositing of the material to be pressed is achieved. For the pick-up of compressed material, for example in form of fully pressed laminated sheets, the described process is kinetically reversed, so to speak, whereby the fully pressed laminated sheet is first lifted along one side to form an entry mouth and the conveyor tray is then moved into the entry mouth and under the fully pressed laminated sheet.
In a conventional apparatus (German Utility Model 69 50 144), which is the starting point for the present invention, an arrangement for the pick-up of fully pressed sheets at the discharge end of an opened plate press has retractable spikes which are pressed into the face of the fully pressed sheets. Damage to the fully pressed sheets in this region cannot be ruled out. Damaged parts must be removed later from the fully pressed sheets, which is expensive and leads to material waste. If the fully pressed laminated sheets are very thin, it is practically impossible with the known methods to individually pick-up the fully pressed sheets in the manner described to form an entry mouth. Methods for the laying down of fully pressed sheets which were removed from the opened plate press by way of a conveyor tray are not described. The further handling of the fully pressed plates is achieved by suction lifters.
In practice, one operates differently from the above-described prior art, which to applicant's knowledge only exists on paper at least as far as laminated sheets are concerned. In the course of conventionally used methods, lifting arrangements are employed which are provided with suction lifters in the form of suction cups. These lifting arrangements are driven into the opened plate press, their suction cups pick up the laminated sheets to be removed and the lifting arrangements are then removed again from the opened press with the picked-up sheets. Thus, the laminated sheets hang from the suction lifters for an extended period of time. It cannot be ruled out that sensitive surfaces of the fully pressed laminated sheets are deformed during this process where they are contacted by the suction lifters.
This disadvantage is especially inconvenient, since for the operation of the conventional methods, the suction lifters are positioned on the lifting arrangements so that they are distributed over the whole surface or circumference of a laminated sheet to be removed.
The apparatus includes an arrangement positioned at the discharge side of an opened plate press for the pick-up of fully pressed laminated sheets. The fully pressed laminated sheets are lifted to form an entry mouth between the.iower press plate and the laminated sheet and a conveyor tray which is movable into the entry mouth to receive the fully pressed laminated sheet so that the sheet can be removed from the opened plate press while supported on the conveyor tray. The laminated sheets may be decorative laminated sheets or technical laminates or similar sheets, for example, improved chip boards or fiber boards. It is understood that the sides of the press plates facing the material to be pressed must be appropriately constructed for the manufacture of the respective type of sheets produced. The term "conveyor tray" defines an arrangement which is used for the loading and emptying of a plate pres s in the manufacture of chip boards, fiber boards or similar material to be pressed, but also in the manufacture of laminated sheets. This arrangement includes a frame and a generally light conveyor belt corresponding in width to the width of the frame, which conveyor belt is endless or can be wound and unwound. During the charging of a plate press, the material to be pressed is appropriately deposited onto the conveyor tray and, while supported on the conveyor tray, transported into the opened plate press with the conveyor belt at a stand still.
The material to be pressed is then deposited onto the lower press plate during the removal of the conveyor tray from the opened plate press, whereby the movement of the conveyor belt is appropriately coordinated with the removal of the conveyor tray so that no relative movement takes place between the conveyor belt and the press plate onto which the material to be pressed is deposited, and also between the conveyor belt and the material to be pressed. This manner of driving the conveyor belt is called a synchronous drive. Since a relative movement between the conveyor belt and the press plate is prevented, a very gentle depositing of the material to be pressed is achieved. For the pick-up of compressed material, for example in form of fully pressed laminated sheets, the described process is kinetically reversed, so to speak, whereby the fully pressed laminated sheet is first lifted along one side to form an entry mouth and the conveyor tray is then moved into the entry mouth and under the fully pressed laminated sheet.
In a conventional apparatus (German Utility Model 69 50 144), which is the starting point for the present invention, an arrangement for the pick-up of fully pressed sheets at the discharge end of an opened plate press has retractable spikes which are pressed into the face of the fully pressed sheets. Damage to the fully pressed sheets in this region cannot be ruled out. Damaged parts must be removed later from the fully pressed sheets, which is expensive and leads to material waste. If the fully pressed laminated sheets are very thin, it is practically impossible with the known methods to individually pick-up the fully pressed sheets in the manner described to form an entry mouth. Methods for the laying down of fully pressed sheets which were removed from the opened plate press by way of a conveyor tray are not described. The further handling of the fully pressed plates is achieved by suction lifters.
In practice, one operates differently from the above-described prior art, which to applicant's knowledge only exists on paper at least as far as laminated sheets are concerned. In the course of conventionally used methods, lifting arrangements are employed which are provided with suction lifters in the form of suction cups. These lifting arrangements are driven into the opened plate press, their suction cups pick up the laminated sheets to be removed and the lifting arrangements are then removed again from the opened press with the picked-up sheets. Thus, the laminated sheets hang from the suction lifters for an extended period of time. It cannot be ruled out that sensitive surfaces of the fully pressed laminated sheets are deformed during this process where they are contacted by the suction lifters.
This disadvantage is especially inconvenient, since for the operation of the conventional methods, the suction lifters are positioned on the lifting arrangements so that they are distributed over the whole surface or circumference of a laminated sheet to be removed.
It is an aspect of the invention to further develop an apparatus of the above described construction so that fully pressed laminated sheets can be very easily and gently removed from the opened plate press, even when several laminated sheets are stacked on top of each other and simultaneously pressed. It is understood that, in an operation involving several laminated sheets, intermediate separating layers must be provided at regular intervals or that the laminations must be arranged and positioned so that the simultaneously pressed, stacked laminated sheets are separable from each other. In order to achieve this aspect, the invention provides that a suction lifter means be positioned at the discharge side of a plate press, said means comprising suction lifters which can be moved into the opened plate press and lowered onto a fully pressed laminated sheet in the press, whereby the laminated sheet is lifted by way of the suction lifters to form an entry mouth between the laminated sheet and the lower press plate. A
laminated sheet receiving means is positioned at the discharge side of the plate press. A conveyor tray moves into the entry mouth and receives the laminated sheet which is released by the suction means.
The conveyor tray carrying the picked-up laminated sheet is then moved in reverse direction over the laminated sheet receiving means and the laminated sheet can be laid down onto the laminated sheet receiving means or onto laminated sheets already supported thereon by such reverse movement of the conveyor tray. The invention provides the unexpected advantage that the suction lifters acting on the surface of a fully pressed laminated sheet act only in a peripheral region and only for a very short time so that disturbances of the surface structure are substantially prevented. The invention has the further unexpected advantage that not only can the opened plate press be emptied by way of the conveyor tray, but a fully pressed sheet can also be laid down by way of the conveyor tray without suction lifters or similar elements acting on the surface of the fully pressed laminated sheet, if the conveyor tray is simultaneously constructed as a lay-down arrangement and coordinated with a laminated sheet receiving means positioned at a discharge side of the plate press. The laminated sheet receiving means may be a vertically movable table or a conveyor belt.
laminated sheet receiving means is positioned at the discharge side of the plate press. A conveyor tray moves into the entry mouth and receives the laminated sheet which is released by the suction means.
The conveyor tray carrying the picked-up laminated sheet is then moved in reverse direction over the laminated sheet receiving means and the laminated sheet can be laid down onto the laminated sheet receiving means or onto laminated sheets already supported thereon by such reverse movement of the conveyor tray. The invention provides the unexpected advantage that the suction lifters acting on the surface of a fully pressed laminated sheet act only in a peripheral region and only for a very short time so that disturbances of the surface structure are substantially prevented. The invention has the further unexpected advantage that not only can the opened plate press be emptied by way of the conveyor tray, but a fully pressed sheet can also be laid down by way of the conveyor tray without suction lifters or similar elements acting on the surface of the fully pressed laminated sheet, if the conveyor tray is simultaneously constructed as a lay-down arrangement and coordinated with a laminated sheet receiving means positioned at a discharge side of the plate press. The laminated sheet receiving means may be a vertically movable table or a conveyor belt.
Several alternative constructions and designs are possible within the framework of the invention. The described methods may be used especially easily in a plate press which is adapted for the simultaneous pressing of several laminated sheets stacked on top of each other. In a preferred embodiment, the suction lifter arrangement includes suction lifters which are coordinated with the individual laminated sheets and are sequentially operable and the laminated sheets of the individual layers are successively picked up in the plate press and successively laid down onto the laminated sheet receiving means by the conveyor tray. The laminated sheet receiving means is preferably lowered in correspond-ence with the increase in height of the stack formed thereon. In an apparatus in accordance with the invention, the conveyor tray may be driven by friction contact as known in the art.
The friction contact may thereby be achieved by the conveyor belt of the conveyor tray or by way of special rolls which are connected with a winding and unwinding arrangement included in the conveyor tray or with guide rollers of the conveyor tray. It is also possible to drive the conveyor tray by way of a synchronous motor as known in the art.
The present invention provides an apparatus for the emptying of a plate press adapted for the simultaneous pressing of a plurality of stacked laminate sheets and having a lower press plate and an upper press plate, comprising:
(a) a lifting means positioned at a discharge side of the plate press for individually lifting one of multiple pressed laminate sheets in the plate press and having suction lifters associated with the top laminate sheet of each said plurality of stacked laminate sheets which can be sequentially swivelled into the plate press when open, and lowered onto a fully pressed laminate sheet therein, whereby the individual laminate sheet can be lifted with the suction lifters to form an entry mouth defined by the lifted individual laminate sheet and one of the lower press plate and another laminate sheet positioned on the lower press plate;
(b) a conveyor tray insertable into the entry mouth for successively receiving the individual laminate sheet lifted by the suction lifters on one side of the tray; and (c) a laminate sheet receiving means positioned near to the discharge side of the plate press over which laminate sheet receiving means the conveyor tray with the individual laminate sheet thereon is moved for laying the individual laminate sheet down thereon during a reverse movement of the conveyor tray.
An apparatus in accordance with the invention preferably provides for the emptying of an opened plate press at relatively high speed. In order to ensure that such -4a-high speed operation does not result in a fully pressed laminated sheet is thereby not being uncontrollably moved or displaced in relation to the conveyor tray, one embodiment of the invention, which is of special importance, provides the conveyor tray with a clamping rod or a vacuum holding ledge at that end of the conveyor tray which is opposite the laminated sheet receiving means. The rod or ledge is preferably operable by way of a lever transmission and stops or by set piston/cylinder arrangements.
The invention will now be further described by way of example only and with references to the following drawings wherein Figure 1 a is a schematic side view of an apparatus in accordance with the invention in one mode of operation;
Figure 1 b shows the embodiment shown in Figure 1 a in another mode of operation;
Figure 2 illustrates an enlargement of portion A of the embodiment shown in Figure 1 in a different operating position; and a~c~~S i i Figure 3 is a view of the embodiment shown in Figure 2 in yet another operating position.
A preferred embodiment of the apparatus of the invention as illustrated in the drawings is used in the manufacture of laminated sheets for the emptying of a plate press 1 having a lower press plate 2 and an upper press plate 3. In the illustrated embodiment, the lower press plate 2 can be raised and lowered by way of piston/cylinder arrangements 5 for the execution of the pressing process and for the charging and emptying of the plate press 1.
The plate press 1 includes an arrangement for the pick-up of fully pressed laminated sheets 4 and a conveyor tray 7 which arrangement is positioned at the discharge side of the plate press 1 for the formation of an entry mouth 6 for the conveyor tray 7. In Figures la and lb, the plate press 1 is shown in an opened condition. The plate press 1 has been charged previously with material to be pressed in two layers, which material was then pressed into fully pressed laminated sheets 4. The plate press 1 was subsequently opened. It is apparent that the conveyor tray 7 is insertable into the entry mouth between the laminated sheets 4 to thereby remove the fully pressed laminated sheet 4, which has been picked up in the manner described below. It is readily apparent to an art skilled person from the drawing that the fully pressed laminated sheet 4 may be removed from the opened plate press 1 while resting on the conveyor tray 7.
The arrangement for the pick-up of the fully pressed laminated sheet is a suction lifter arrangement 8 having suction lifters 9, which are moved into the opened plate press 1 and lowered onto a fully pressed laminated sheet 4. Subsequently, the laminated sheet 4 is lifted to form the entry mouth 6. This condition is illustrated in Figure 1. A
laminated sheet receiving table 10 is positioned at the discharge side of the plate press 1 and can be raised and lowered as indicated by the solid vertical double arrow. The conveyor tray 7 is movable in the direction of the horizontal double arrow in the drawing so that the conveyor tray 7 can be moved with a laminated sheet 4 supported thereon until it is above the laminated sheet receiving table 10 and the laminated sheet 4 can be laid down onto the laminated sheet receiving table 10 or onto laminated sheets already deposited thereon during a ~~~~si i return movement of the conveyor tray 7. In this embodiment, the plate press 1 is adapted for the simultaneous pressing of several laminated sheets 4 stacked on top of each other (two in this embodiment). The suction lifter arrangement 8 includes suction lifters 9 which are coordinated with the individual laminated sheets and are sequentially operable. Thus, the laminated sheets 4 of the individual layers can be picked up together in the plate press 1 by the conveyor tray 7 on one side and deposited on the other side of the tray onto the laminated sheet receiving table (see Figure lb). The conveyor tray 7 is driven by frictional contact or by way of a synchronous motor (not illustrated).
It is apparent from Figures 2 and 3 that the conveyor tray 7 is provided with at least one clamping rod 11 at that end of the tray which faces the laminated sheet receiving table 10. The clamping rod 11 is operable by a lever transmission 12 and stops or by set piston/cylinder arrangements 13. A laminated sheet 4 supported on the conveyor tray 7 may thus be held fast during transport.
The friction contact may thereby be achieved by the conveyor belt of the conveyor tray or by way of special rolls which are connected with a winding and unwinding arrangement included in the conveyor tray or with guide rollers of the conveyor tray. It is also possible to drive the conveyor tray by way of a synchronous motor as known in the art.
The present invention provides an apparatus for the emptying of a plate press adapted for the simultaneous pressing of a plurality of stacked laminate sheets and having a lower press plate and an upper press plate, comprising:
(a) a lifting means positioned at a discharge side of the plate press for individually lifting one of multiple pressed laminate sheets in the plate press and having suction lifters associated with the top laminate sheet of each said plurality of stacked laminate sheets which can be sequentially swivelled into the plate press when open, and lowered onto a fully pressed laminate sheet therein, whereby the individual laminate sheet can be lifted with the suction lifters to form an entry mouth defined by the lifted individual laminate sheet and one of the lower press plate and another laminate sheet positioned on the lower press plate;
(b) a conveyor tray insertable into the entry mouth for successively receiving the individual laminate sheet lifted by the suction lifters on one side of the tray; and (c) a laminate sheet receiving means positioned near to the discharge side of the plate press over which laminate sheet receiving means the conveyor tray with the individual laminate sheet thereon is moved for laying the individual laminate sheet down thereon during a reverse movement of the conveyor tray.
An apparatus in accordance with the invention preferably provides for the emptying of an opened plate press at relatively high speed. In order to ensure that such -4a-high speed operation does not result in a fully pressed laminated sheet is thereby not being uncontrollably moved or displaced in relation to the conveyor tray, one embodiment of the invention, which is of special importance, provides the conveyor tray with a clamping rod or a vacuum holding ledge at that end of the conveyor tray which is opposite the laminated sheet receiving means. The rod or ledge is preferably operable by way of a lever transmission and stops or by set piston/cylinder arrangements.
The invention will now be further described by way of example only and with references to the following drawings wherein Figure 1 a is a schematic side view of an apparatus in accordance with the invention in one mode of operation;
Figure 1 b shows the embodiment shown in Figure 1 a in another mode of operation;
Figure 2 illustrates an enlargement of portion A of the embodiment shown in Figure 1 in a different operating position; and a~c~~S i i Figure 3 is a view of the embodiment shown in Figure 2 in yet another operating position.
A preferred embodiment of the apparatus of the invention as illustrated in the drawings is used in the manufacture of laminated sheets for the emptying of a plate press 1 having a lower press plate 2 and an upper press plate 3. In the illustrated embodiment, the lower press plate 2 can be raised and lowered by way of piston/cylinder arrangements 5 for the execution of the pressing process and for the charging and emptying of the plate press 1.
The plate press 1 includes an arrangement for the pick-up of fully pressed laminated sheets 4 and a conveyor tray 7 which arrangement is positioned at the discharge side of the plate press 1 for the formation of an entry mouth 6 for the conveyor tray 7. In Figures la and lb, the plate press 1 is shown in an opened condition. The plate press 1 has been charged previously with material to be pressed in two layers, which material was then pressed into fully pressed laminated sheets 4. The plate press 1 was subsequently opened. It is apparent that the conveyor tray 7 is insertable into the entry mouth between the laminated sheets 4 to thereby remove the fully pressed laminated sheet 4, which has been picked up in the manner described below. It is readily apparent to an art skilled person from the drawing that the fully pressed laminated sheet 4 may be removed from the opened plate press 1 while resting on the conveyor tray 7.
The arrangement for the pick-up of the fully pressed laminated sheet is a suction lifter arrangement 8 having suction lifters 9, which are moved into the opened plate press 1 and lowered onto a fully pressed laminated sheet 4. Subsequently, the laminated sheet 4 is lifted to form the entry mouth 6. This condition is illustrated in Figure 1. A
laminated sheet receiving table 10 is positioned at the discharge side of the plate press 1 and can be raised and lowered as indicated by the solid vertical double arrow. The conveyor tray 7 is movable in the direction of the horizontal double arrow in the drawing so that the conveyor tray 7 can be moved with a laminated sheet 4 supported thereon until it is above the laminated sheet receiving table 10 and the laminated sheet 4 can be laid down onto the laminated sheet receiving table 10 or onto laminated sheets already deposited thereon during a ~~~~si i return movement of the conveyor tray 7. In this embodiment, the plate press 1 is adapted for the simultaneous pressing of several laminated sheets 4 stacked on top of each other (two in this embodiment). The suction lifter arrangement 8 includes suction lifters 9 which are coordinated with the individual laminated sheets and are sequentially operable. Thus, the laminated sheets 4 of the individual layers can be picked up together in the plate press 1 by the conveyor tray 7 on one side and deposited on the other side of the tray onto the laminated sheet receiving table (see Figure lb). The conveyor tray 7 is driven by frictional contact or by way of a synchronous motor (not illustrated).
It is apparent from Figures 2 and 3 that the conveyor tray 7 is provided with at least one clamping rod 11 at that end of the tray which faces the laminated sheet receiving table 10. The clamping rod 11 is operable by a lever transmission 12 and stops or by set piston/cylinder arrangements 13. A laminated sheet 4 supported on the conveyor tray 7 may thus be held fast during transport.
Claims (6)
1. Apparatus for the emptying of a plate press adapted for the simultaneous pressing of a plurality of stacked laminate sheets and having a lower press plate and an upper press plate, comprising:
(a) a lifting means positioned at a discharge side of the plate press for individually lifting one of multiple pressed laminate sheets in the plate press and having suction lifters associated with the top laminate sheet of each said plurality of stacked laminate sheets which can be sequentially swivelled into the plate press when open, and lowered onto a fully pressed laminate sheet therein, whereby the individual laminate sheet can be lifted with the suction lifters to form an entry mouth defined by the lifted individual laminate sheet and one of the lower press plate and another laminate sheet positioned on the lower press plate;
(b) a conveyor tray insertable into the entry mouth for successively receiving the individual laminate sheet lifted by the suction lifters on one side of the tray; and (c) a laminate sheet receiving means positioned near to the discharge side of the plate press over which laminate sheet receiving means the conveyor tray with the individual laminate sheet thereon is moved for laying the individual laminate sheet down thereon during a reverse movement of the conveyor tray.
(a) a lifting means positioned at a discharge side of the plate press for individually lifting one of multiple pressed laminate sheets in the plate press and having suction lifters associated with the top laminate sheet of each said plurality of stacked laminate sheets which can be sequentially swivelled into the plate press when open, and lowered onto a fully pressed laminate sheet therein, whereby the individual laminate sheet can be lifted with the suction lifters to form an entry mouth defined by the lifted individual laminate sheet and one of the lower press plate and another laminate sheet positioned on the lower press plate;
(b) a conveyor tray insertable into the entry mouth for successively receiving the individual laminate sheet lifted by the suction lifters on one side of the tray; and (c) a laminate sheet receiving means positioned near to the discharge side of the plate press over which laminate sheet receiving means the conveyor tray with the individual laminate sheet thereon is moved for laying the individual laminate sheet down thereon during a reverse movement of the conveyor tray.
2. An apparatus as defined in claim 1, wherein the conveyor tray is driven by friction contact between a conveyor of the conveyor tray and a fixed surface.
3. An apparatus as defined in claim 1, wherein the conveyor tray is driven by a synchronous motor.
4. An apparatus as defined in claim 1, wherein the conveyor tray at an end opposite the laminated sheet receiving means is provided with one of a clamping rod and a vacuum ledge, operated by one of a settable piston/cylinder arrangement and a lever transmission and stops.
5. An apparatus as defined in claim 2, wherein the conveyor tray at an end opposite the laminated sheet receiving means is provided with one of a clamping rod and a vacuum ledge, operated by one of a settable piston/cylinder arrangement and a lever transmission and stops.
6. An apparatus as defined in claim 3, wherein the conveyor tray at an end opposite the laminated sheet receiving means is provided with one of a clamping rod and a vacuum ledge, operated by one of a settable piston/cylinder arrangement and a lever transmission and stops.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4112747A DE4112747C2 (en) | 1991-04-19 | 1991-04-19 | System for emptying a plate press in the course of the production of laminate plates |
| DEP4112747.1 | 1991-04-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2066511A1 CA2066511A1 (en) | 1992-10-20 |
| CA2066511C true CA2066511C (en) | 2000-11-21 |
Family
ID=6429895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002066511A Expired - Fee Related CA2066511C (en) | 1991-04-19 | 1992-04-21 | Apparatus for the emptying of a plate press during the manufacture of laminated sheets |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPH0648631A (en) |
| CA (1) | CA2066511C (en) |
| DE (1) | DE4112747C2 (en) |
| FI (1) | FI105899B (en) |
| IT (1) | IT1258296B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010020929B4 (en) | 2010-05-10 | 2022-07-07 | Schmid Technology Systems Gmbh | Press |
| CN109702104A (en) * | 2019-01-27 | 2019-05-03 | 泰珂力得精密部件(苏州)有限公司 | A kind of feeding mechanism of plate |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE6950144U (en) * | 1969-12-27 | 1970-05-14 | Goldschmidt Ag Th | DEVICE FOR DISCHARGING PLATE-SHAPED COMPRESSED MATERIAL. |
| DE2852456C2 (en) * | 1978-12-04 | 1983-06-30 | Maschinenfabrik J. Dieffenbacher Gmbh & Co, 7519 Eppingen | Device for on and off panels in the manufacture of laminated panels |
| DE3001010A1 (en) * | 1980-01-12 | 1981-07-16 | Maschinenfabrik J. Dieffenbacher Gmbh & Co, 7519 Eppingen | Loading and unloading system for panel press - has supporting strips and carrier belt synchronised with feed and discharge members |
| DE3031683A1 (en) * | 1980-08-22 | 1982-04-01 | Heinrich Wemhöner GmbH & Co KG, 4900 Herford | SHORT-CYCLE PRESS FOR COATING LARGE WORKPIECES |
| DE3105236C2 (en) * | 1981-02-13 | 1983-12-08 | G. Siempelkamp Gmbh & Co, 4150 Krefeld | Method and system for replacing the structural sheets in a system for quenching and tempering chipboard, fiberboard and the like. |
| DE4026046A1 (en) * | 1990-08-17 | 1992-02-20 | Siempelkamp Gmbh & Co | Embossing decorative patterns on panels of synthetic resin - involves grippers attached to sliding rails to move panels in and out of press |
-
1991
- 1991-04-19 DE DE4112747A patent/DE4112747C2/en not_active Expired - Fee Related
-
1992
- 1992-04-08 JP JP4087011A patent/JPH0648631A/en active Pending
- 1992-04-08 IT ITMI920863A patent/IT1258296B/en active IP Right Grant
- 1992-04-08 FI FI921555A patent/FI105899B/en not_active IP Right Cessation
- 1992-04-21 CA CA002066511A patent/CA2066511C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE4112747A1 (en) | 1992-10-22 |
| IT1258296B (en) | 1996-02-22 |
| FI921555A (en) | 1992-10-20 |
| FI105899B (en) | 2000-10-31 |
| ITMI920863A0 (en) | 1992-04-08 |
| JPH0648631A (en) | 1994-02-22 |
| DE4112747C2 (en) | 1998-04-16 |
| CA2066511A1 (en) | 1992-10-20 |
| FI921555A0 (en) | 1992-04-08 |
| ITMI920863A1 (en) | 1993-10-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |