WO2001008875A1

WO2001008875A1 - Press driving mechanism

Info

Publication number: WO2001008875A1
Application number: PCT/IT2000/000317
Authority: WO
Inventors: Simonetta Giammarini; Domenico Brandimarti
Original assignee: Simonetta Giammarini; Domenico Brandimarti
Priority date: 1999-08-01
Filing date: 2000-07-31
Publication date: 2001-02-08
Also published as: AU6469600A; ITDP990003A1; ITDP990003A0

Abstract

The innovation consists of a device based on a working principle which makes it possible to carry out a wide variety of operations on solid Elements (E) which move in an orderly fashion along various processes of industrial production, without these Elements (E) coming to a halt or undergoing significant disturbances to the continuity of their forward movement along the production line. This is made possible because this device works by following these Elements (E) in a synchronous way, that is moving at the same speed with which they advance along a production line or along a work cycle development, to undergo the present processes. The advantages which derive from this are those due to the low cost of the tools (R) which in this device are simple, flat and not radiated tools (R) because they are destined to work on a flat surface and/or on parallel levels and therefore in the same way as the ustensils used on a forming press. Another advantage consists in extending the current limitations due to the WORKING PITCHES relative to the circumferences of the current rotating tools (R), since this device has the ability to operate with infinite WORKING PITCHES.

Description

DESCRIPTION of the invention called:

PRESS DRIVING MECHANISM

Technical Field.

This invention will be able to be usefully employed in various sectors of industrial production (from the Graphic industry to the Paper-converting industry, from the Iron and Steel industry to Rubber, Plastic, Wood, Textiles, Industrial Machinery in general, Etc.) wherever alternative methods are necessary to solve unresolved technical and/or economical problems.

Background Art. Wherever numerous operations of industrial production are currently carried out through the use of operator tools which act on board counter-rotating machine members.

Disclosure of Invention. This patent consists of an operator device "R" (see Fig.l and 2) revolving around a centre "X" organized in such a way that its rotating motion breaks down into the two sinusoidal movements of which it is composed : that of the SINE function ( "s" movement) and that of the COSINE function ( "c" movement).

Assuming that the progressing movement "I" of the Element "E" being processed is identical (in intensity, direction and orientation) to the "c" movement of the Operator device "R" when this is in transit at point "t", it will follow that the two subjects (Element being processed "E" and Operator device "R") will be in the condition of KINEMATIC SYNCHRONISM.

Moreover, seeing as the difference in speed Δv=l-c (that is the difference between the speed of the Element being processed "I" and the speed of the Operator device "c") vanishes at point "t", it can be asserted that such Δv is near zero just before and just after the device reaches point "t".

The Operator device is called "D" when it is made up of two "R". Near the "t" points the "s" movement of the Operator device is in reverse passing by zero and therefore the two opposite "R" Operator devices, following the "s" movement, reach the position which is nearest to both of them and the Element being processed.

Since the Operator device carries out this operation on the Element being processed following the "s" movement, it follows that the first part of this operation finishes with the Device at point "t", and hence in perfect kinematic synchronism between the two subjects [TOOLS=("R" Devices) and MATERIAL TO BE PROCESSED=("E" Element)].

How long this operation starts before and finishes after reaching point "t" and hence how much the Operator Device (sometimes) disturbs the progress of the Element being processed (because of these Δv), depends on the ability of the Element being processed to absorb these disturbances, on the criticality of the process, on whether or not the Operator Device is able to provide for the correction of these disturbances and lastly on the entity of the disturbance which is a function of the effective linear space during which the tools are used to do the work.

Normally, for the operations of Cutting, Punch-cutting, Printing, low Coining, pre-Shearing, Etc., on Elements being processed of limited thickness, the system absorbs these mistakes in synchronism very well so, in practice, the problem is inexistent.

Another characteristic of the invention consists in the fact that the system allows one to obtain high intensities of force on the "R" Device, if another "R" Device or any obstacle is opposed to it, because near the position relative to point "t" a condition which is advantageous to the radial force passing through the "X" centre and the reaction point of the "R" Device is created, when it is near

This characteristic can also be usefully exploited for operations on single pieces which are normally carried out on bench vices or on fluid-dynamic or eccentric or screw presses, where the three basic operations (Loading, Processing and Unloading) all take place in the same position, while with this new system it is possible to locate these three operations in different positions and at such a distance between them that the level of the safety for the operator is higher. Another advantage is that of being able to have at one's disposal enormous forces with a minimum waste of energy, due to the high mechanic efficiency of the system.

Moreover in a position of Processing on a single piece or for what concerns the completion of the two operations of Loading and Unloading, these can be carried out both automatically and by hand, and using both methods.

When the interlocking occurs manually it is possible to employ several people for the operations of Loading and/or Unloading without risking to compromise their safety given that the dangerous operation of PROCESSING is carried out by the machine in another location.

Brief Description of Drawings.

Figures 1 and 2 show the basic configuration scheme of the invention and are provided with all necessary references to disclose the invention.

Figures 3 and 4 show some more complex configurations schemes of the invention.

Best Mode for Carrying Out the Invention.

Figures 1 and 2 show the best way in which the Operator device "R" separates its rotating motion into synchronization to the Element being processed ( "c" movement) and the opposing operator movements relative to the operator Tools (Vmovement).

The system is composed of at least one couple of rotating and synchronous machine-members (usually gears) on which there are the two "R" parts of the Operator device (Tool and Counter-tool) moreover, these two parts are forced to rotate on themselves during the rotation around the "X" centres because the bar "b" compels them to perform constant orientation.

In fact the two "R" parts of the Device must be kept face to face to allow the Tool(s) and Counter-tool(s) to be able to carry out the established operation precisely and repetitively. All this is thanks to the slide bar "b" which is free to slide longitudinally at least respect to one of the two "R" parts. Therefore the two parts of the Operator Device follow synchronised and opposed that is specular rotary-traverse courses and its coming together/pulling away movements (at "s" speed) can be compared to the precise movements of a cutting die mounted on a punch press.

The possible configurations of such a system range from a simple pair (Fig. 2) of machine-members "p" with the "R" parts of the Operator device which process in an overhanging way "narrow" Elements like Threads, Straps, Tubes, Trimming of limited size, Strips, Etc., to a system (Fig. 3) with two pairs of Devices positioned face-to-face and structured in such a way as to form a sort of double column press for the processing of "wide" products like Plates, Fabrics, Sheets, Boards, Several Elements coupled, Strips, Etc... to system (Fig. 4) with more that one pair of Devices, face-to-face, synchronous and with the "R" parts that form several double column presses linked in such a way as to allow the construction of large platforms for pressing like a multi-column press and in which it is possible to carry out simultaneously a variety of processes.

Moreover, both for overhang operating systems and for double column operating systems, forms of every type are possible, without limits of schematic set up or of combination between them, and they are formed according to what is required by the different applicatory needs.

Lastly, it is possible to have polygonal implementations of the Operator device "R" in which each side of the polygon is supplied with a Tool (or Counter-tool) which acts in combination with the respective Counter-tool (or Tool) mounted on one of the "R" devices, of which there are as many as the sides of the polygon and respecting the angular positions around the "X" centre of this polygonal multi-Device.

Various control systems are possible for managing the repetitive processing and permitting synchronism, for whatever pitch of processing, on the various Elements being processed.

These controls can be based on machine-members composed of timing belts, chains, gears, elliptic gears, eccentic gears, etc., but they can also be based on electronic apparatus with closed and/or open link in such a way that each turn around the "X" centre corresponds to an operating cycle (or to its multiple or submultiples) and the PITCH of the processing depends on the space covered by the Element being processed during the cycle or by a specific reference lying on the Element being processed, to which this PITCH could also be variable.

In Fig.2 we can see a pair of eccentric gears "Q" and "U" which (although they make up a mechanically incorrect system which is always more frequently applied) takes its motion from the processing line of the Element and activates the two rotating machine-members "P".

By varying the keying position of the "Q" gear with respect to the angular position of the Operator device "R", we can obtain an infinity of synchronism speeds, from the minimum pitch speed to the maximum pitch speed, coinciding with the minimum and the maximum radii, respectively, of the gears and we can hence obtain an infinite number of pitches.

The systems based on this invention, as well as not being limited to technical fields of applicability, are not limited in the materials which they can be made of, nor in the forms which can be produced, nor even in the dimensions.

Industrial Applicability.

As well as for the PROCESSES already mentioned, this invention can also be used for Shearing, Punch-cutting, Printing, Cutting, Pre- shearing, Pairing, Transferring, Assembling, Dismantling, Feeding, Loading, Withdrawing, Joining, Dragging, Marking, Coining, Stamping, Deforming, Accelerating, Decelerating, Creasing, Handling, Transferring, Applying, Pressing, Inspection, Control, Testing and any Physical Operation in general, on solid Elements which move in an orderly fashion along various processes of industrial production.

Claims

CLAIMS.

1 . Universal system for obtaining processes in movement on elements in transit along a generic cycle of industrial manufacturing and/or processing by straight tools;

2. System of dynamic pressing which is able to carry out simultaneously one or more operations like Shearing, Punch- cutting, Printing, Cutting, Pre-shearing, Pairing, Transferring,

Assembling, Dismantling, Feeding, Loading, Withdrawing, Joining, Dragging, Marking, Coining, Stamping, Deforming, Accelerating, Decelerating, Creasing, Handling, Transferring, Applying, Pressing, Inspection, Control, Testing and any Physical Operations in general, on solid Elements which move in an orderly fashion along various processes of industrial production.

3. Apparatus for mechanical control through the use of positive machine-members for the transmission of motion, like Timing belts, Chains, Gears, Elliptic gears, Etc.;

4. Apparatus for closed link electronic control for control in real time of the speed of synchronism in function of the PITCH of processing;

5. Apparatus for open link electronic control for control in real time of the synchronism but without feed-back checking and with the possibility of working even at variable Pitch;

6. Application of the invention in the paper-converting industry in general, in the graphic industry in general and in the manufacturing industry of all those products manufactured in places and production lines organized in processes and/or simple or complex cycles;

7. Unlimited forms of the Operator device in function of the various applicatory needs and in terms of number, layout and combination;

8. Unlimited production of the Operator device in terms of typology of materials, structural forms and dimensions;

9. Unlimited applicability in terms of Applicatory Industrial- Economic Sector. AMENDED CLAIMS

[received by the International Bureau on 27 December 2000 (27. 12.00 ) ; original cl aims 1 -9 repl aced by new cl aims 10- 18 ( 1 page) ]

0. Mechanism of dynamic and cycling pressing which is able to perform one or more work-operations on elements E which move in an orderly fashion along an industrial manufacturing process, avoiding the classic working- pitch-limit (as the fix circumference of printer-rollers, etc.) and without problems of kinematic synchronism between tool-operator and element E;

1 . Mechanism of claim 1 0 characterized of the capacity to perform his work- operation in a wide range of working pitches (variable pitch) by varying the Total-Cycle-Time in respect to the transit speed of the element E;

2. Mechanism of claim 1 0 to 1 1 characterized of the capacity to perform his work-operation in kinematic synchronism with the element E, during that specific part of the working-cycle dedicated to said work-operation;3. Mechanism of claim 1 0 to 1 2 characterized of a mechanical system composed of positive machine-members for the transmission of motion like Timing belts, Chains, Gears, Elliptic gears, Etc., to drive said characteristics of variable pitch and of kinematic synchronism; 4. Mechanism of claim 1 0 to 1 2 characterized of an electronic apparatus, working in closed link mode, to drive said characteristics of variable pitch and of kinematic synchronism under conditions of feedback control; 5. Mechanism of claim 1 0 to 1 2 characterized of an electronic apparatus, working in open link mode, to drive said characteristics of variable pitch and of kinematic synchronism, without feedback control; 6. Mechanism of dynamic pressing to perform work-operation(s) on element(s) E in conditions of higher safety level for the operator(s) because the three basic-cycle-operations as Loading element E, Work- operation and Unloading worked element E, are executed in three different positions instead of only one position wherein they are performed by using any classic kind of the static-bench-presses; 7. Mechanism of claims 1 0 to 1 6 characterized of possibility to use cheaper tools because they can originate from straight and flat geometric forms and because they are easy to prepare and to set-up. This is an improvement on respect to the classic rotational-tools (as printers rollers, radial-cutters, etc.) who are much more expensive because each one of them is limited at only one working-pitch and because, normally, they have hi costs of construction; 8. Mechanism of claims 1 0 to 1 7 and represented in Fig. l to 4, applied in the Paper-converting, Printing and Rubber&Plastic Industries.

AMED SHEET (ARTICLE 19)