RETAINING MEANS BUILD BY SUCTION CUPS IN A MACHINE FOR THE MANUFACTURE OF PANELS

Abstract: Machine for the manufacture of panels with support bench of actuating suction cups independently lifting and/or lowering (V) by means of a program to operate on any shape and also on the inside of the area occupied by the panel.

Description: DESCRIPTION RETAINING MEANS BUILD BY SUCTION CUPS IN A MACHINE FOR THE MANUFACTURE OF PANELS This invention refers to a machine for the manufacture of panels by means of retaining suction cups The bench with suction cups utilized in such machine is also part of the present invention Field of the invention This invention is preferably used, even if not exclusively, in t h e field of milling, perforating, moulder machines etc of panels of 1 various shape, not necessarily rectangular and solid Therefore the machine may be a machine for wood-panel working (Eg furniture doors) wherein said panels are secured to a surface by suction cups Background art In prior art machines of such type are known as for example ITAUD97000001 corresponding to the PCT/IT9800140 This solution presents a system of movable, raisable a n d lowerable suction cups substantially supported by a fluid-dynamic cylinder having two chambers for activation of more suction cups i n 1 lifting or lowering simultaneously Drawbacks This type of solution practically yields impossible to carry o u t the working of a shaped panel for example not rectangular or with hollow internal parts, for the impossibility to exclude from t h e involved area a number of suction cups regards to the others outside a rectangular area, therefore it prevents the obtatnment of t h e purpose of the above-mentioned technical field Scope of the invention The scope of the present innovation is to avoid the above- mentioned drawbacks and therefore to make possible to activate an y suction cup, o ne independently from the other, in function of t h e desired shape of the panel to work and this without having single dynamic-fluid operating connections for each single suction cup Essence of the invention The problem is solved as claimed by means of a machine for the manufacture of panels by means of retaining suction cups, of t h e type involving at least one panel support bench by means of raisable and lowerable suction cups with a system of double-acting dynamic- fluid cylinder, that is with a lowering u pper chamber and a lifting lower chamber, characterised in the fact that - the said upper chamber has an annular seal in rabbet that, with t h e lowering of the suction cup, widens the surface of the l owering pressure ; - the said system of dynamic-fluid cylinder ol said suction cups furthermore involves an intermediate operating chamber , up ward s thrust adjuvant, in addition to the lower o n e - the said upper chamber is connected with a single dynamic-fluid pressure net (p i ) , - the said intermediate chamber is connected by independent files with a second pressure net (p2), on the x-axis (X), - the said lower chamber is connected b> independent ies, orthogonal to the previous with a third pressure net (p3 ). on t h e axis of the ordinates (Y), ot a corresponding diagram, or vice \ ersa, - everything being associated to programming means able t o coordinate the respective pressures (p i . p2, p3), in such a way t h at only a selected suction cup. determined by the crossing of said coordinates (X,Y) is operated at a time, in order that, proceeding with successive steps, only the desired suction cups of the entire suction cup set and/or vice versa may be lowered Advantages of the invention The advantages obtained with this solution consist in the tact that such system can be operated by means of a program, for example computer, selecting only the suction cups involved with a shape, with any shape and this without the need of realizing single connections for each cylinder of each suction cup, but operating only with t h ree pressures of three nets which are connected with the respective ramifications to the respective higher pressure p i , intermediate pressure p2, and lower pressure p3 chambers, by means of t h e activation for example electro-mechanics (with electro-valve) of certain lines (X,Y), therefore pressures P2,P3 , which intercros s determining the suction cups involved in function of the combination Advantageously the bench machine with suction cups is of t h e type with upperplaced working groups, and is characterised by t h e fact of having a back loading and unloading, with opposite loading and unloading lines, being the said benches in a multiple number (B ) in order to permit the loading and unloading of the panels to be worked and processed, independent from the panels in process a n d this by means of the movement of said working groups in association to movement means from and for said back mov ement bench in o rde r to operate in both opposite directions Description of an embodiment of the invention These and other ad vantages will appear from the following description of a preferential solution of an embodiment, with the ai d of the enclosed drawings, whose details are not to be cons idered limitative but only supplied as an example Figure 1 is an axial sectional view of a suction c up Figure 2 is a plan-view of a bench with suction cups Figures 3 and 4 are side views of said bench with suction cups of Fig 2 Figure 5 is a side schematic view in elevation of an example of a manufacturing machine, for example with milling heads from abo ve on the said work bench with suction cups Figure 6 is a plan-view of an entire machine able to operate with a continuous cycle Figure 7 is a frontal view of a machine including the said benches with suction cups (B) In particular in Figure 6 the benches can be seen from above with suction cups B advanced in respect to a back feeding bench for loading and unloading panels to be worked C l , C2, C3, C4 The system is structured in order that the work benche s (B) are always operatively occupied by the upperplaced working groups (GO) without waiting times Everything facilitated by the back movement system C l , C2, C3 , C4, where C l has an evident loading system of the panels to b e worked In other words the benches with suction cups in a pref e re nti al solution are six and therefore while in some of them panels to b e worked are loaded, from the back bench C 1 -C2, others are subj ected to work with the upperplaced operating groups (GO) and the others are subjected to unload with the back platform C2-C3-C4 in the s ame sense and opposite to the previous one In this way continuous working without dead times is obtained The invention substantially relates to a machine for t h e manufacture of panels by means of retaining suction cups, of the t ype including at least one support bench (B) for panels by means of lowerable and raisable suction cups (V) with a system of a double- acting dynamic-fluid cylinder, that is with a lowering upper c hamber (PI ) and lifting lower chamber (P3), wherein - the said upper c h amber (PI) has an annular seal in rabbet (21 ) that . with the lowering of the suction cup, widens the surface of th e lowering pressure , - the said system of dynamic-fluid cylinder of said suction cups furthermore involves an intermediate operating chamber (P2). upwards thrust adjuvant, in addition to the lower one (P3) - the said upper chamber is connected with a single dynami c-fluid pressure net (p i ) , - the said intermediate chamber is connected by independent files with a second pressure net (p2), on the x-axis (X), - the said lower chamber is connected by independent orthogonal files to the previous one, with a third pressure net (p3), on the axis of t h e ordinates (Y), of a corresponding diagram, or vice versa, - everything being associated to programming means able to coordinate the respective pressures (pi, p2, p3). in such a way that only a selected suction cup, determined by the crossing of said coordinates (X,Y) is operated at a time, in order that proceeding successive steps, only the desired suction cups of the entire suction cup set and/or vice versa may be lowered According to Figure 1 the three chambers are indicated by PI, P2, P3 The first upper chamber (PI) is included between the gaskets upper piston-ring (9) in the upper guide (7), and intermediate piston- ring (14), with the provision, of lowering to enlarge the thrusting section downwards by means of a annular rabbet gasket (21) The second intermediate chamber (P2), defined between the said intermediate annular gasket (14) and a lower annular gasket (20) in the same intermediate piston (13) The third lower chamber (P3), defined by the said lower annular gasket (20) of said intermediate piston (13) and a basic annular sealing gasket (P3) The elements are all decomposable for the maintenance with a base (18) where a conduction chamber of suction for the vacuum formation is provided (16) that axially conducts (1) to the upper suction cup (2), and annular elements that form the lower (22), intermediate (11) and higher chambers (10) all with annular rabbet sealing gaskets (15) Screw means (6) locking the upper ring (10) with the upper bush (7) Th i s to facilitate the easy extraction , disassembl y a n d maintenance The behaviour of the pres sures In the following figures the bench (B) with the suction cups (V) that are adjacent to disappearing cylinders (R) of different diameter (Rl , R2, R3) is seen in order to form panel support to block before t h e sealing suction with the suction cups (V) The mechanism works for example as follows - All the suction cups (V) are raised, and also the side strikers involved (R), - The panel to be worked rests on the suction cups (V) on the s i de striker (R), - On the basis of a predetermined program, the lowering control of t h e suction cups (V) not involved in the panel support is operated, - The side strikers are lowered, and the panel remains su spended , fixed to the suction cups below, which have remained raised - The panel can be processed with the higher operating groups (GO). above the working suction cup bench (B) as indicated in Fig 5, w here with (P) for example the compressor arrangements are indicated - The workings can be of any type, e g milling, drilling, peπmetrical moulding both external and internal, drilling, lapping, etc - When the working is completed, the vacuum of the suction cups is suppressed freeing the worked panels - The suction cup bench shifts in order to pick-up the machined panel - The cycle is repeated with one or more benches operating in a n alternative way A diagram (See also Figure 1A) is made to understand the movement in lifting, lowering of the suction cups better, the respective diagram of the pressures for the chambers pi, p2, p3, with forces FI, F2, F3 the abscissas and the pressure in Bar in the ordinates The position Pb indicates the piston (suction cup V) lowered and the position Pa indicates the piston (suction cup V) raised FI indicates the force of the piston to the pressure (PI) for the upper chamber, F2 the force for the intermediate chamber to the pressure (P2) and the force F3 the pressure of the lower chamber (P3) The pressure of the upper chamber (PI) is constant of 10 Bar for the lowering The pressures of the intermediate (P2) and lower (P3) chambers are respectively 4 and 6 Bar when the respective suction cups are raised, while they become respectively 0 and 3 Bar when t h e suction cups are lowered The maintenance of the lowering of the suction cups n o t involved in the work (V) occurs for the fact, that when the pres sures p2, p3 are lowered, the starting of the movement downwards, i s sufficient because the section increase involves the completion of t h e thrust downwards maintaining the suction cups lowered Vice versa, resetting the pressures in P2 and P3 to 4 and 6 Bar, the pistons not involved will always remain lowered, as the pres sures are balanced but prevailing the section of the higher pressurized chamber (p i ) If one wants to zero everything in order to raise all the suction cups, it is sufficient to zero the pressure of the higher chambers P I , whose net is common to all the pistons of all the suction cups (V)

Claims: Claims 1 Machine for the manufacture of panels by means of retaining suction cups, of the type involving at least one panel support bench by means of raisable and lowerable suction cups (V) with double- acting dynamic-fluid cylinder means, having a lowering upper chamber (PI) and a lifting lower chamber (P3), characterised in that - the said dynamic-fluid cylinder means of said suction cups (V) involves furthermore an intermediate operating chamber (P2), upwards thrusting adjuvant, in addition to the said lifting lower one (P3), - the said lowering upper chamber (PI) is connected to a single dynamic-fluid pressure pipe-line net (pi), - the said intermediate operating chamber (P2) is connected by independent pipe-line with a second pressure net (p2), on the x-axis (X), - the said lifting lower chamber (P3) is connected by independent orthogonal pipe-line with a third independent pressure net (p3), on the axis of the ordinates (Y), of a corresponding diagram, or vice versa, - all being associated to programming means able to coordinate the respective pressures (pi, p2, p3), in such a way that only a selected suction cup (V), determined by the crossing of said coordinates (X,Y) is operated at a time, in order that, proceeding tor successive steps, only the desired suction cups of the entire suction cup set may be lowered and/or vice versa lifted 2 Machine according to the previous claim, characterised in that the said lowering upper chamber (PI) has an annular seal in rabbet (21) that with the lowering of the suction cup (V 2) widens the pre s sure surface increasing the thrust force downwards 3 Bench machine w ith suction cups (B) according to any of t h e previous claims, of the type with upperplaced working groups (GO) characterised by the fact of having a back loading and u n loading bench, with opposite loading (C l , C2) and unloading (C2 C3 C4) lines, being the said benches in multiple number (B) to allow t h e loading and unloading of the panels to be worked and processed, independent from panels in process and this by means of t h e movement of said working groups (GO) in association to moving means from and for the said back movement bench (C l , C2, C3, C4), in order to operate in both opposite directions (c2) 4 Work bench with suction cups according to any of claims 1 and 2 , for machine according to claim 3 5 Dynamic-fluid system for activation of suction cups on work benc h (B) for machines and work benches according to any of the previou s claims 6 Panel working line utilizing a machine having the characteristics according to any of the previous claims

Inventors: NASCIMBEN MARCO, NASCIMBEN, MARCO
Applicants: MULTIAX SRL, NASCIMBEN MARCO, NASCIMBEN, MARCO
Application year: 2001
Main classification: B25B11
IPC codes: B25B11