FR2516445A1 - MULTI-POST PRESS FOR FORMING EMBEDDED CONTAINERS AND METHOD USING SUCH A PRESS - Google Patents

Abstract

THE INVENTION RELATING TO MACHINES FOR FORMING CONTAINERS STAMPED FROM SHEET. THE OBJECT OF THE INVENTION IS TO PROVIDE A HIGH FLOW PRESS, FOR EXAMPLE 700 CONTAINERS PER MINUTE, PERFORMING ALL THE OPERATIONS FROM THE CUTTING IN A SMALL SPACE. THE PRESS IS IN THREE SUPERIMPOSED PARTS THAT CAN BE ASSEMBLED ON SITE: A LOWER PART 30 WHICH CONTAINS THE DRIVE MEANS, SHAFTS, PINIONS AND CAMS; A MIDDLE PART 40 OR A SHEET IS CUT INTO BLANKETS, AND WHERE THE BLANKETS ARE PRE-PRINTED IN A BOWL; AND AN UPPER PART 20 IN WHICH THE CUVETTES UNDERGO FINISHING SHAPING AND DEBURRING.

Description

The present invention relates to a large press

  to form thin-walled stamped containers

  of a raw material pre-coated by a series of

  multiple forms of forming in the press More specifically

  Firstly, the invention relates to a press which can produce about 700 containers per minute, the containers being formed by cutting, stamping, re-profiling-profiling and deburring operations. In the past, a press has been used. unit to produce such hollow stamped containers at rates of about 125 per minute Such a press is described for example in US Patent 4,262,510.

  capacity by the nature of its mechanical structure of

  retention of the containers and the material entering

  In addition, there are instal-

  production of such containers in a more efficient manner by using multiple presses between

  which are arranged the transfer conveyors.

  These arrangements require synchronization between

  209 multiple presses and they occupy more space, and require

  investment, for their construction and operation. In addition, the obligation to provide for

  at least two presses in such a facility subject to

  a press with the deficiencies of the associated press, that is,

  that is, if one or the other decreases in capacity, the total capacity decreases Similarly, a deficiency of one

conveyor stops production.

  The container made by the press according to the

  The invention has been claimed in the French patent application 81 23 881, which describes in detail the type of container, its construction and its use. Such containers must be manufactured on equipment operating at high speed because their cost must be met. to be reduced

  at a minimum because each container is discarded after use.

  Also, containers of this kind are usually formed from a pre-coated raw material, as described for example in the French patent application 81 23638 It therefore becomes important to manufacture and handle the containers at high speeds but with sufficient care to prevent damage to the thin wall or fragile precoat during the multiple forming operations. In the prior art, methods have been proposed for moving the partially shaped containers in the tooling of a press for progressive forming, as described, for example, in the French patent application 80 04255, and also in U.S. Patent (Reissue) 29,645, which discloses a transfer device

  not ensuring dangerous movement or handling

  In US Pat. No. 1,935,894, an intermittent transfer operation similar to that of the present invention but not as uniform is described in US Pat. No. 1,935,894.

  In this case, the mechanism for transferring

  partially shaped containers, stamped

  and re-mailed, has been aligned in such a way that a

  ge in said transfer mechanisms may be included

  in the press interval between the tools.

  It is also important that a press that can manufacture containers at imposed speeds is simple

  and compact In a large press, a series of perfecti

  provided to each zone of the structure of pres-

  In particular, it is essential that operations requiring large tools and a large space can be performed on one side of the press periphery and that operations that can be performed in a more closer to each other are realized

  on the other side of the periphery of the press in order to reduce

  at least the overall dimensions of the press in plan view In US Pat. No. 4,026,226 there is described an inverted press where forming operations are carried out

  above and below the outline of the press, or

  ", which allows for separate operations

3 2516445

  in the same press In this press, pat-

  these are made above the crown and funds are made below the crown The legs are assembled with the funds below the crown This press simply separates the tools but not for a saving of space or construction and also not to minimize the power needed for training

  of the press More specifically, the imperatives

  the maximum load are met by

  deny both the uphill race and the downhill race

  of the press and, in addition, the burden placed on the

  training is better balanced.

  To be able to perform multiple operations at different levels in the same press, handling

  containers becomes critical Techniques, equi-

  handling procedures have been described

  in relation to the inverted presses mentioned above.

  More particularly, in the bottom-running press, the tab is carried by the metal from which it is formed to the opposite side of the crown.

  for assembly with the bottom In the inver-

  of known type, the partially formed boxes are transferred by oscillating fingers which are carried by transfer bars With such arrangements, the

  partial displacement of parts during the progressive shaping

  sif is accurate but the mechanisms are large

  It is not known in the prior art that there is a simple mechanism for carrying out a transfer.

  in multiple tracks in a large progressive press.

  To minimize the large dimensions

  presses for forming containers at high speeds, it is necessary to drive more

  part of the tooling from part of the article.

  bre-crank using a common training element

  to reduce the number of connecting rods

  its, drive arm and similar organs To a certain extent, this feature has been incorporated in the inverted press mentioned above, but in a large press with multiple

  forming which are placed above and below the

  this characteristic is substantially attenuated. In addition, the locking and forming punches have been placed side by side instead of being arranged one above the other or, as in the prior art, they have been arranged by placing a punch in the cavity of another and guiding the first relative to the second,

  which has the result that the tolerances of the punch encase

  and those of the carrier punch in which it is fitted are cumulative In this case, the guiding systems

  are independent of one another so that the problems

  Tolerance levels are reduced to a minimum.

  guidance systems usually include a

  tif of external lubrication, or open, which is sensitive to environmental conditions and dust, which causes a certain degree of fouling in-the press o the products are manufactured as well as in the part

  surrounding the installation This external lubrication

  The guiding system poses problems of cleaning, loss of lubricant and requires particular care when manufacturing correct containers for products.

  In the same way, the use of damping cylinders

  which are planned in the press and around the

  To maintain an overall minimum height is unique In the crank case of the press, there is provided a worm gear drive and tangent wheel The roller bearings of the worm are mounted in the sides of the crankcase. Such an arrangement must, in order to be effective, control the flow of oil in the bearings to avoid galling which would cause a degradation of the lubricant. oil and overheating Limitations regarding the vertical dimensions of the press, the crankcase wall resistance and the support

  to, necessarily provide for the bearings prevent the use of

  to make passages sufficiently large to ensure proper flow of the lubricating fluid of said bearings. Any press frame is formed of a series of individual components. These components are usually manufactured using the auxiliaries available for the manufacture of parts of the press frame and in accordance with the obligation to maintain the necessary tolerances for the realization of the press kit and to obtain an efficient and safe operation We have not proposed

  until now a press that is made up of sub-

  multiple sets constituting units capable of functioning

  individually for production or control purposes

  and which have interconnections allowing the different

  In addition, it has not been suggested in the prior art that it is possible to individually control such subassemblies of a large press before assembling the assembly or else

  during the repair of a part of said assembly.

  The object of the invention is therefore to provide

  a compact press capable of performing a

  multiple forming of containers from a raw material

  pre-coated and at a rate of about 700 containers

per minute.

  Another object of the invention is to provide a simplified system for transporting boxes for

  multiple use in such a press.

  The invention also aims to establish

  design features that facilitate the manufacture of

  cation, control, repair and assembly of a

such press.

  The invention further aims to provide a transfer mechanism which is compact but can handle a series of rows of boxes progressing

6 2516445

  in multiple forming operations.

  The invention also aims to provide a set of nested punches and compact structure that is designed to maintain minimum tolerances for a controlled punch movement. It is another object of the invention to provide a damping cylinder arrangement which is advantageously used in association with such a press and

  which supports compact tooling.

  Another object of the invention is to provide an improved interlocking system that is clean,

  compact design, safe operation and

  as well as a simple assembly.

  It is furthermore the object of the invention to provide a technique and arrangement of components which ensure proper flow of the lubricant into rollers

  roller for high speeds.

  In accordance with the objectives defined above and to solve the problems posed in the prior art, there is provided an inverted type press capable of executing multiple operations and whose arbremanivelle is

  placed below the feed line for training purposes.

  at the same time the punch of a lower press of

  bowl and a double-sided pressing machine.

  effect placed above the first

  bowl formation transforms a sheet blank into a bowl

  who are transferred to the upper press o

  multiple operations of stamping, re-stamping-

  Profiling and deburring are done gradually.

  Specifically, the upper press has two re-pressing stations (the second one with profiling) and a deburring station.

  upper press each have two

  lisseaux, namely a race for shearing and / or blocking and a race for stamping or the

  re-stamping or deburring.

  cup has a stroke of 225 mm and is

  directly from the crankshaft via two connecting rods The blanking and blanking sliders provided in the lower press perform a stroke of approximately 8 mm, which is derived from

  bowl-forming slide with the help of a mechanism

  me to cam and knee brace The upper press or reem-

  head has three slides, the first two ensuring blocking and deburring, having the same stroke

  225 mm for the trough

  say that the slider involved in re-stamping operations has a stroke of 300 mm The sliders

  blocking in the upper press are

  trailed by means of vertical rods which are mounted so as to move with the slide of

  formation of cuvettes in the lower press

  the rewinding press is driven inde-

through the crank shaft.

  In this inverted press, we obtain a

  maximum use of the press by executing

  Cuvette formation and blank cutting below the crown and stamping operations

  and re-stamping above the crown More parti-

  the first operation (cutting of the blank and

  bowl formation) is performed below the neck

  The bowl is formed with its face downwards (inverted with its open end facing downwards) and is then transported over the crown to the upper press where it is progressively put into operation. form by stamping, re-stamping and bottom profiling, finally being deburred around the collar An advantage of this

  solution is that the larger diameter part

  which corresponds to the blank, is cut out of a different part of the press and, consequently, the distance between

  different forming stations can be reduced, which allows

8 2516445

  puts a decrease in the overall dimensions of the press.

  Another advantage is that the operation of decoupling

  blanks and cuvettes are made during one stroke of the inverted press while the other forming operations are performed during the

  race, that is to say the opposite race More specifically

  the transfer of the bowl from below the crown to the top thereof is carried out by means of a magnetic conveyor which inverts the position of the bowl so that its opening is directed towards

  the top in the subsequent forming operations.

  As explained above, the blanking and bowl forming operations are first performed in the lower part of the press and a magnetic conveyor then transfers the cuvettes placed.

  shaped in the upper part of the press where

  slow successively first of all a repackaging operation

  Then, a re-profiling-profiling operation, then a deburring operation In the lower part of the press, the cut edge of the blank establishes the center-to-center distance between the die blanking and bowl forming tools in each case. This distance from center to center depends on the dimensions of the largest container to be manufactured in the press

  and therefore it varies according to the size

  of the container being manufactured and the maximum value of the reel width and the

  In the upper part of the press, the

  The spacing between the adjacent drawing and re-pressing tools is not limited to the large diameter of the cut edge of the blank and the channels may for example be advantageously positioned near the uprights.

  holders of the upper part in order to obtain the maximum

  mum of rigidity The magnetic conveyor includes

  dividers of channels for varying spacing of

  vices in order to align them with the fixed spacing of the

9 2516445

  first tools for re-pressing and second tools

  Re-stamping-profiling and deburring More particularly

  the possibility of adjusting the conveyor for the

  The handling of containers of different sizes with different tools having different center-to-center spacings in the upper and lower parts of the press frame is a part of the present invention. Similarly, the magnetic conveyor comprises upper and lower magnetic strips.

  lower and a set of rollers positioned

  that not only allow the transfer of containers from the lower press to the press

  but which also allow for the necessary shift.

  containers to take account of the different

  which represents an important characteristic

aunt of the invention.

  A cascade entrapment drive technique is used to transfer containers

  partially formed which are received from

  magnetic voyeur to the first re-coining station

  then to the next re-profiling-profiling station.

  This technique involves the use of magnetic tapes that are positioned to support

  containers inclined slightly in relation to the vertical

  wedge or to the axis of the tooling so that each of them can take only the vertical position when

  is brought into axial alignment with the punch and the die.

  Consequently, only the container placed on the neck

  lisseau is affected by the stroke of the slider.

  adjacent containers driven in line are not crushed

  or affected by the punch that pushes the container to work.

  to the matrix by ensuring its rétroutissage in the form of a container of smaller diameter and greater height The rétrouti container is then gripped by a second magnetic tape drive which is

  placed below the matrix and is transferred

  than the second re-punching punch in the same way.

  The second re-profiling-profiling station ensures that

  The container is pressed downwards, but not all the way through the die, and then the bottom is pushed by pushing the bottom of the container upwards against the punch. The container thus rewound is profiled and released when the punch moves backwards. since the container has a non-deburred flange, it is gripped by a vacuum-operated finger and is transferred into the deburring station. The flail deburring operation allows the container to traverse the entire distance through the die. The deburring thus formed remains at the top of the die when the container is grasped from below by a magnetic transport tape which is positioned so as to evacuate it from the press. The vacuum operated finger is driven upwards. towards the next container to evacuate the deburring drop because the latter

  rests on the upper part of the matrix of debau

  An advantage of this system is that rapid container transfer can be ensured. In addition, in a large inverted type press

  which can count up to six channels, this mechanism is sim-

  Plural, modular and efficient so that multiple container transfer paths can be arranged next to one another and that a common system can be used

  to remove deburring falls.

  The overall structural design of the press is such that this press can be divided into

  three independent sections More specifically, each

  section can be assembled and controlled separately at the factory and then shipped to the manufacturing location where the components can be assembled for commissioning, despite the presence of a drive

  common for the upper and lower slides.

  The basic subset is constituted by

11 2516445

  the main drive which includes the engine, the reduction

  gearbox, the stepper drive, the flywheel clutch, the brake, the crankshaft and the connecting rods, it has a box-like structure which is open upward to form a solid support for the bearings of the crank shaft and also to form a manifold for the lubricating oil

  crankcase includes flow passages

  to and from the bearing area of the tangent wheel roller bearings These flow passages are connected to inlet pumps

  and exit so that the oil introduced can

  properly cool and lubricate the roller bearings and that the outflow is controlled by a suction pump capable of running dry.

  the suction pump is used to evacuate effectively

  the bearings so that oil does not accumulate

  mule not by drowning and overheating the bearings.

  The central unit comprises carrying amounts which assemble with one another the upper parts

  and lower parts of the press and constitutes, when

  it is combined with the lower unit, a complete blanking and bowl-forming press The bowl-forming punch ram is actuated by connecting rods from the main crankshaft and four cams provided on the slider training

  cups actuate the blocking beams through

  a set of knee pads that also allows

  to open or open the matrix for operation

maintenance and cleaning.

  The upper part corresponds to the first and second re-pressing and deburring areas of the press and contains plunger and pinch slides, the latter being actuated by the rods

  connected to the bowl-forming slide to

  place with it The plunger punches

12 2516445

  It is driven by the crank shaft through sliding rods entrained by the connecting rod which extends only into the side frame of the bowl forming unit. Accordingly, the three components of the press can be manufactured and controlled separately and

  they can be shipped independently before assembling

  the final stage as they are independent units

  Similarly, the lower and central units can

  be assembled and controlled together.

  One technique is used in the section above

  the press to reduce the overall height of the press to a minimum. This is an imperative

  for the two clamping and re-pressing slides.

  To have a sufficient vertical height in the-

  so-called sliders and to minimize the overall height of the press frame which is necessary for the

  housing of the slides, a nesting technique is used

  More specifically, a slide interlock

  re-pressing between two separate slides of ser-

  ge makes it possible to give an appropriate vertical height to all the sliders but minimizes the overall height of the press Normally, the sliders would be stacked on top of each other giving the height of the press approximately a double value.

  to the technique concerning the invention, the height outside

  everything of the press is reduced while each slider can be guided independently at both ends so

  to minimize unnecessary tolerances of

  the slide The central slide of

  the longest race and is connected by

  ports cantilevered at the punching tooling that

  is arranged coaxially inside the cylinders of a-

  hollow mortise of the clamping slides.

  In the upper part of the big press

  of the inverted type, each slide is guided by a new

  the way The guidance system allows all the lubricant

  relying on the upper part of the support to be channeled inside cylindrical support tubes, which eliminates contamination of the oil or

  flooding tooling during periods of downtime.

  hollow cylindrical carrier tube contains all the oil

  flowing back to the crankcase More particularly, for each

* that guiding support, there is provided a lower support which is placed on the base of the upper section and an upper support which is carried in the ring of the press in a way that allows the upper support to float in axial position in thus allowing a certain misalignment and eliminating an alignment operation before machining Cylindrical sleeves are arranged

  around the tube and they support the slides by clave-

  of these on the sleeves Three of these

  are used on each side of the upper part of the press to support each end of the three slides.

  In the clamping slides which are

  by the upper part of the press, there are provided passages for supporting nitrogen cushions for re-pressing and holding the container

  during the punch forming operation of the systems

  my classics use a series of cylinders that pushes

  the slider and which are connected to a re-

  main service In the press according to the invention,

  there is provision for independent cylinder assemblies and tanks

  which are supported on the inside of the slider

  tightening, which reduces the overall height of the press.

  This technique also simplifies the construction of

  seems of the press Each damping cylinder is associated with a punch arranged coaxially and which slides

  in the central cavity of the clamping slide cushion. The damping cylinder is easily put into service and, in combination

  with the slide design, it has features that allow alignment

1> 4 52516445

  during the change of tools for the manufacture

  containers of different sizes.

  In particular, cylindrical pockets for receiving cushions are provided in the sliders for adjustable positioning and easy axial alignment.

  tooling carried inside each hollow cushion.

  In operation, pre-coated sheets are introduced automatically and intermittently into the

  lower part of the press Cuvettes without paste-

  are formed by cutting blanks and forming cuvettes in the metal sheet by means of a

  tooling consisting of tools for shearing blanks,

  We have established a number of

  6 rows, of cuvettes, which are transferred magnetically from the lower part to the upper part of the re-pressing. Cuvettes are received by the transfer conveyor in a position

  o their opening is directed downwards and, by rotation,

  180, their opening is oriented upwards so that they arrive in this condition in the re-pressing station Each row is introduced

  in the first feeding station of the newsreel

  stuffing o the cuvettes are aligned axially with

  the punches and dies of the first reforestation

  weaving When the sliders of the rewetting station

  are lowered, the cuvettes are blocked and stamped through the dies and they are ejected until

  in a position on a trans-

  carrier placed under the matrix Each recipe

  postponed is transferred to the second post

  re-profiling-profiling and a repackaging operation

  partial training is carried out and then the bottom is

  This time the re-stuffed container is not pushed entirely through the die and therefore, there remains a flange. The container is profiled in its bottom and it is moved back through the die onto the punch to be ejected at above the matrix The container is then transferred using

  empty to a final position where the collar is flush

  This deburring operation allows the beaker

  to go through the matrix and be seized by

  a magnetic conveyor to be evacuated from the press.

  Annular deburring drops and the remaining part

  from the initial 5 are discharged independently.

  Other advantages and characteristics of the

  will be highlighted in the rest of the

  description, given by way of non-limiting example, in

  the attached drawings in which:

  FIG. 1 is a perspective view of

  of the upper part of a structural press

  stratified and inverted type according to the present invention.

tion;

  FIG. 2 is a side elevational view of

  part of the press of FIG. 1,

  parts of the frame being removed and represented

  approximately halfway between the top and the bottom;

  FIG. 3 is a diagrammatic representation

  that the technique of transfer feeding with

  cage used for transferring the cuvettes into a re-pressing station; Figure 4 is similar to Figure 3, except that the bowl is now shown in the rewetted condition; Figure 5 is similar to Figures 3

  and 4 but it shows how the next bowl is ame-

  born in an alignment condition for re-stamping

  age and how the previous bowl is removed;

  Figure 6 is a side elevational view of

  part of the press as it would appear if one side of the press was removed to better highlight the shaping of a container in the steps

  between the cutting of the initial sheet and the

vulture of the collar; -

  FIG. 7 is an exploded view and in

  perspective of the various major press groups,

  how they cooperate with each other; for clarity, details have been removed in Figure 7 so that it is fairly schematic; FIG. 8 is a side sectional view of the lower part of the press, showing the sections situated essentially on either side of the level of the

  soil by highlighting in particular the entral-

  worm gear and the lower slide support

laughing;

  FIG. 9 is a perspective view through

  part of the press shown in FIG. 8;

  Figure 10 is a partial sectional view;

  the guiding system used to support the

  lisseaux in the upper part of the press of the

gure 1;

  FIG. 11 is a sectional view of a section

  sliss showing the cooperation of a cushion cylinder

  and sheath for clamping and re-pressing, and its punch

arranged coaxially and;

  FIG. 12 is a partial view in

  front view showing the transfer rollers and the upper band used to bring the cuvettes into

  the re-pressing station of the press.

  FIG. 1 is a perspective view,

  above the ground level of the press 20, this view being made from the back side of the press and parts being shown partially broken away or removed to show the active inner components relating to the present invention. of the press is better represented in FIGS. 2, 7, 8 and 9 and comprises the driving part 30 which supports

  the crank shaft 31 through extreme bearings 32 pla-

  in the housing 33 at each end of the shaft-handle

  In the center of the 4 'crankshaft, there is a

  tangent wheel 35 also supported by lateral bearings

  32 a, carried by the casing 33, and by a shaft 36.

  The worm 34a is supported transversely to the crank shaft 31 by the shaft 36 itself supported by roller bearings mounted in the housing walls 33. In a well-known manner there is provided a mechanism

  motor and belt drive to actuate the pressure

  In the preferred embodiment, the casing 33 is placed in a pit below the ground level and has a box-like hollow structure open upwards and having an upper face 37

  bordered by a flange and designed to support cotnpo-

  correspondents of the press, as indicated on the

Figures 8 and 9.

  From each side of the crank shaft 31, it

  there are systems mounted eccentrically to train

  Figure 9 Thus, between bearings 32 of the crank shaft and the tangent wheel

  , it is provided on each side of the training

  In particular, eccentric drives 38 for re-pressing are supported by the crank shaft 31 just inside the housing 33 and close to the crank shaft 31.

  bearings 32 of said shaft In the preferred embodiment of

  The eccentric drives 38 have a stroke of 300 mm and comprise a connecting rod 38a which is provided with a counterweight as indicated at 38b. Between the eccentric drives 38 and the tangent wheel, training is provided. with eccentric 39 for bowl forming and clamping operations, said drives 39 having rods 39a which are provided with a counterweight as indicated at 39b The rods

  link 39a ensure the driving of the slide

  tightening and cuvette-

  as will be explained in detail later.

  The central portion 40 of the press 20, FIGS. 1, 2 and 7, consists of two lateral elements 40a and an upper element 40b which are connected together to form a hollow box structure which is supported on the flange.

  upper section 37 of the crank shaft casing 33, said

  central part 40 having two carrying flanges 40 c,

  downwards and intended to support the central part of

  40 to a level constituting the ground level for the press structure, as shown in FIGS. 1 and 2 A lower press slide 41, moving

  inside the central portion 40, comprises articles

  stirrups and trunnions 41 a, directed downwards

  and providing the pivotal connection with the upper ends

  3 in the preferred embodiment shown in FIG. 9, a travel of 225 mm. In a conventional manner, the slider 41 is supported in a conventional manner.

  to perform inside part 40 a green movement

  tical controlled by guide plates and by a stud

  central bearing The lubrication of the gui-

  the central amount is carried out below

  the working area of the slider 41 so that

  creepers can return directly to the crankcase.

  bre-crank 33 without touching the shaped parts.

  At the top of the lower slider 41, two spongers are provided.

  Bearings 41 b, directed upwards and which are placed at each end of the slide 41, near the lateral elements 40 a of the central portion 40 Two tie rods 42 extend upwardly from the bearing shoulders 41 b so to provide a driving connection with the upper part of the press 20 in the area

blocks 44.

  Similarly, the upper ends of the connecting rods 38a carry conventional sliding members 43 which have a box-like cross-sectional shape and are slideably guided within the central portion 40 to execute a correct reciprocating motion. The sliding elements 43 are placed between the inside of the lateral elements 40a and the outer ends of the slider 41. The lubrication of the aforementioned guide system is

  made from the slider 41 and the oil can easily be

  return to the crank case 33 The end

  The lower part of the sliding elements 43 comprises stirrup and trunnion joints 43a and their upper end has threaded holes 43b intended to establish a connection with the upper drive mechanism of the central or re-pressing slide, which is placed

  as explained, at the top of the press 20.

  The elements 43 extend upwards through the central part 40 of the press 20 In the preferred mode

  embodiment, the stroke of the elements 43 is 300 mm.

  The upper part 45 of the press 20 is composed of two box-like side members 46 which are open at their center and which comprise a base 46a, two uprights 46b directed upwards and a

  upper element 47, as shown in FIG.

  upper structure 47 provided above the lateral elements 46 in the form of a housing, connects together the two lateral elements 46 This structure leaves the inside of the upper part open transversely in the space existing between the lateral uprights 46 b On each side of the press 20, there is provided in the central gap existing between the lateral uprights 46b, three guiding systems 48 which independently support the upper slides 49 and 50 for respectively performing

  clamping and re-pressing operations, figure 10.

  The guiding systems 48 are positioned at each end.

  50 and 50, FIG. 2, so that the slides 49 and 50 are supported next to one another so as to perform parallel reciprocating movements along the guide systems.

  48 There are two upper slides 49 (one

  front slider and a rear slider) for the operation

  the upper slide 50, which ensures the operation

  drawing, Figure 6, is fitted between

  two upper sliders 49 Tie rods 42 extended

  tooth through spacers 42 provided in the part

  40 and they lead superiorly to the slides

  external pails 49 which are driven by means of the blocks 44 and the extension bars 44a, FIG. 2 The central part of the guide systems 48 is arranged in such a way

  directly driving the slider 50, because

  it is connected to the element 43, as has been explained.

  Referring now to FIG. 10, which is a side elevation and partial sectional view of the guide system -48, we see how are arranged

  the uprights 46b, the base 46a and the upper element 47.

  To ensure the respective assembly of the amounts 46 b and

  upper and lower elements 47 and 46 a, it is pre-

  saw two tie rods 51 which block together the elements la-

  46 in the form of a shoemaker, leaving a

  interior opening to accommodate the three systems

my guide 48.

  Each tie rod is disposed in a corner of the press 20 and is positioned to extend from the upper member 47 through the sections 40 and 30 to assist in press assembly. Each of the sections 30, 40 and 45 can be manufactured

  independently controlled before final assembly, this

  divided structure facilitating manufacturing and

  The drive systems are divided in a similar fashion at 38a and 39a between sections 30 and 40 and at 43b and 44 between sections 40 and 45. Tie rods

  51 are constituted by hollow hollow tubular pieces

  which consist of an inner sleeve and an outer sleeve one of which is in tension and the other in

  compression so that the loads applied can

  They can be easily absorbed without deformation of the tie rods 51 For the assembly of the press 20, the tie rods 51 are heated so as to expand and then the nuts are tightened so that, during the cooling, the tie rods

  51 are prestressed.

  Although only one side of the system 48 is

  Figure 10, it is obvious that the opposite side

  is identical The guide system 48 includes maneuvers

  higher and lower rates 52 and 53 which are respectively

  Arrangement for supporting a tubular element 54 in a vertical arrangement between the upper element 47 and the base element 46 a For each lateral element 46,

  three sets of upper and lower sleeves are provided

  52 and 53 so that three tubular elements

  54 are supported in parallel with each other

  being accommodated in the free space between the lateral elements 46 The tubes 54 can move

  vertically freely in relation to their respective sleeves

  52 and 53 A bar 43c arranged axially is connected

  to an element 43 through a threaded hole 43b and it passes through

  the central tubular elements 54 along the axis of each of them being connected to said elements by means of

  nuts 55 placed at the top of each end.

  central tubular elements 54 The upper nut

  55 serves to closely apply the slider 50

  against the corresponding sliding element 43 The movement

  The sliders 49 are generated by means of the tie rods 42a through the blocks 44 The sliders

  > 49 are driven by tie rods 42a through the

  toises 42 connected to the blocks 44 and the rods 44 a, with a

  225 mm stroke, and the central guidance system 48

  between the two outer slides is driven by

  pulling 44 with a stroke of 300 mm.

  The slider 50 is provided by the elements 45 and the rods 43c which traverse upwards the central guide elements of the system 48. More particularly, the sliders 49 and 50 are supported at their ends.

  a and 49 so that there is a vertical movement

  The ends 49a and 50a of the sliders are keyed with keyways 56 so as to execute a raising and lowering movement with the tubular elements 54. when the slides 49 and 50 move vertically under

  the influence of the controlled reciprocating movement of their

respective training systems.

  The sleeves 52 and 53 are bolted or otherwise

  blocked on their respective supports 47 and 46a with locking bolts 57 so that once

  that the lower sleeve 53 has been positioned in its box

  formed in the base 46a, the upper sleeve 52 can

  be easily aligned axially with the lower sleeve and locked in position with bolts

  57, FIG. 10 Between the tubular element 54 and its neck

  The sealing ring 58 is located just above the slider and is cup-shaped upwardly towards the sleeve 52 so as to form a flange.

  59 upwards, which is used to hold the pump oil

  upward towards the guidance system 48

  between the sleeves 52 and the tubular elements 54 Spe

  after the oil has passed in the intermediate gap, it enters the central cavity of the element 54 through a hole 54a, formed in the side of the tubular element 54, then it can therefore flow down through the area in which the element 43 is placed and then return to the crankcase 33 As a result, the upper lubrication system of the gap existing between the sleeve 52 and the tubular element 54 is isolated

  in a sealed manner with respect to the external atmosphere.

  Likewise, the lower system of lubrication of cushions

  net 53 comprises a sealing ring 61 which is fixed on the upper part of the bearing 53 in order to prevent the oil entrained in the gap existing between the bearings 53 and the tubular elements 54 from escaping. Pressure lubrication is provided ( but it is not represented) for the gap between

  the pads 53 and the tubular elements 54

  valle ends with its lower end inside the pad or sleeve 53 and so it allows the oil

  lubrication to descend along the corresponding passages.

  to the respective drive systems and back into the crank case 33 An O-ring 62 disposed around the lower bushing 53 seals it with respect to the base member 46 a

  that the lubricating oil can not escape.

  Sealing rings 58 are also used.

  The plurality of locking bolts 58b are used for the purpose of blocking the keys 56 between the ends of sliders 49a or 50a and their tubular element 54, as shown in FIG. 10. Each slider can therefore move when of the vertical movement controlled elements 54 in concordance with

  lubricated guidance system 48 Guidance systems

  ge 48 are provided with a top sealing cap and a breather 48 a which is placed at the top of the element

higher 47.

  Each of the clamping slides 49 has an elongated shape and is larger in vertical than horizontal section. Inside each clamping slide 49 there is a series of vertically oriented cylindrical passages arranged to hold the re-pressing tooling, and more specifically forming and blocking elements that move with the slide to partially recap the container

  shaped above the slides 49 and transverse

24 2516445

  two beams 76 spaced apart from one another and interconnecting these slides 49,

  the air springs 60 being arranged below the

  upper member 47 next to the sliders 49, FIG.

  FIG. 11 is a partial sectional view of the press 20, made vertically at a point where the cutting plane passes through the middle of the cylindrical openings 49 b in the sliders 49. The opening designated 49b in FIG. damping device 63 used to block the partially shaped container during the first and the second

  In particular, the damping cylinder

  63 comprises an inner tube 64 disposed in the center.

  This inner tube 64 is symmetrical with respect to a horizontal plane passing through its middle, that is to say that it is

  arranged so that one of the ends of the tube 64 can

  to be used instead of the other This is because the work surfaces 64 has the part

  upper and lower parts are designed to

  to come into sealed contact and may be

  doubled their service life since the lower part wears faster than the other

  this lower part carries the surface on the

  What movements are made?

  63 have outer tubes 65 arranged

  concentrically, cut into a straight tube and

  spaced from each other and coaxially with the inner tubes 64 by shoulder fastening caps 66 which are positioned at the upper end of the tubes 65 O-rings 66a are used to

  ensure the tightness of the tubes 64 and 65 and they are

  in grooves in the fixing hats

  Similarly, there is provided at the lower end of the tubes 64 and 65 of the "Slydring TM 67" (W S Shamban and Company) assemblies which are disposed within the concentric gap between the surfaces.

  the outer tubes 65 and the outer surfaces

64 inner tubes 64 Lower hats

  68 and their positioning rings 68a ensure

  the fixing of the bases of the outer tubes 65 on the necks

  slats 49 while the fixing caps 66 ensure the connection of the upper ends of the tubes 65 with the upper end of the cylindrical openings 49 b of the sliders Similarly rings 68 a and hats

  68 keep the tubes 64 and 65 in a concentrated relation

  The inner cylinder 64 is held in place vertically by the mechanical connections provided at each end. The gas under pressure (nitrogen) is located in the annular gap existing between the tubes 64.

and 65.

  The Slydring TM seals secure the re-press sleeves 69 so that the nitrogen trapped in the gap between the tubes 64 and 65 is compressed as the Slydring TM 67 seals move upward during the blocking operation. relative to the downward movement of the sliders 49 which drive the tubes 64 and 65 downwards The connection between a re-pressing sleeve 69 and a Slydring seal

  TM 67 is established by coming into contact with corrosive surfaces

  respondents who do not appear on the section view

  indicated The final run of descent of the

  stamping 69 is therefore controlled.

  gas exhaust systems (not shown) are connected between the nitrogen containing chamber and a gas tank

  so that the degree of blockage of the return sleeves

  stuffing 69 against the partially partially filled containers

form can be ordered.

  The sets of punches 70 pass through the

  central parts of the re-pressing sleeves 69 Cha-

  that set 70 is carried by a carrier member 50 b dis-

  cantilevered and extending from the slider

  towards the slider 49 so that the set of pointers

  70 performs a 300 mm stroke corresponding to that of the slide 50 of FIG.

  cantilever 50 b comprises two spherical bearing bushings

  71 which are vertically spaced from one another and which act to align the punch drive bar 72 with the axis of the damping cylinder 63 as said bar moves downwardly through of the central area of that ensemble so as to establish

  a link with, and support the first punch of

  73 of each set of punches 70, Figure 11 A bearing 74 and its retaining cap 75 are mounted above the fixing cap 66 to secure the latter by means of a cap screw 75 a,

  in the same way that the pad 74 is fixed on the neck

  Sliver 49 Punch drive bar 72 is therefore additionally axially aligned for reciprocating relative to

  to the damping assembly 63 using the pad 74.

  In the preferred embodiment, the

  73 moves with a corresponding 300 mm stroke

  slider 50 while the rewind sleeve

  weaving 69 executes a stroke of 225 mm corresponding to that of the slide 49 On both sides of the slide, towards the front and towards the rear of the press 20, it

  there are provided suspension elements 50b arranged in

  cant and carrying the punch training bars

  72 of the first and second re-pressing tools

  profiling associated with each row of containers, in a manner identical to that already explained for the

  punch 73 of the first re-pressing station

  cifically, partially shaped containers are moved across the press transversely

  to the direction of movement of the slides 49 and 50.

  When the forward slide 49 descends, it carries with it the damping cylinders 63 (which are provided in sufficient number to correspond, for example, to the six rows of tools and front and rear locking slides 49). slider 50 carries with it and cantilevered, as indicated in b, up to six sets of punches 72 on each side and each set 70 passes coaxially through the central zone.

  the cylinder of a damping cylinder 63 Cuvettes or containers

  partially shaped and from the

  Bottom forming portion 40 are first re-filled in the form of a deeper vessel and smaller diameter because the punch 73 grows.

  the bowl through the stamping die res-

  pective, Figures 3, 4, 5 and 6 The container moves

  then transversely below the slide 50

  at the second re-profiling-profiling station o the other

  water slurry, or rear slider 49, drives its cylinders

  of depreciation which coaxially support the

  very second re-stamping punches in alignment in order to partially re-stamp the containers

  shaped to give them even greater height

  of and to further reduce the diameter of the containers.

  Figure 1 also shows the back of the press 20

  o the second re-pressing operation is carried out.

  Fig. 6 is divided along its center line so that the slider 50 is shown on one side

  at the lower limit of its 300 mm stroke and the

  be next to the upper limit of His race.

  A carrier beam 76 arranged horizontally

  and in a manner similar to sliders 49 and gas springs 60, the beam 76 extending over the press 20 supports the weight of the sliders by means of connecting members 72.

  link 72a extends outwards towards

  fore and aft gas spells 77 Each spring 77 comprising

  a drive rod 77a which is connected to the beam

  As a result, the return race of the first

  first re-punching punch 73, which is caused by

  the slider 50 is balanced by the gas springs 77.

  As mentioned above, the containers are transferred through the upper portion 45 of the press 20 from the front to the back and through the central portion 40 from the rear to the front. This process is 3, 4, 5, 6 and 12, there is shown a transfer system 80 starting from the lower central part 40 of the press

  and heading towards the upper part of the 45

  The transfer system 80 comprises a magnetic tape.

  lower gnetic 81 and an upper magnetic tape 82 Between the strips 81 and 82, eight rolls are provided

  83 arranged horizontally and mounted in relation to

  juxtaposition to rotate in the same direction (in a clockwise direction) so that

  the containers are transferred from one roll to the other.

  The metal bowls shown in FIGS. 3, 4, 5, 6 and 12 are held magnetically by their bottoms, by the magnetic rollers 83 or by the

  magnetic tape 81 or 82 It should be noted that the space-

  between the lower bands 81 and the bands

  82 may be different so that an

  containers to follow a path from the lower belt 81 to the belt

  respective upper 82 requires lateral movement.

  This means that at least some rows of cuvettes must be offset laterally. This operation is performed using the guide bars 84 associated with the rollers 83 (FIG. 12). Each row is associated with its respective series of guide bars 84 which cooperate to ensure that the containers are properly aligned with and received by the appropriate upper magnetic tape 82; we have represented only one row on

Figures 6 and 12.

  FIG. 6, which is a side elevational view of the container transfer system 80, made by the center of the press 20 and

  along a plane defined by line 6-6 of Figure 1.

  The overall transfer operation of the containers from the central portion 40 to the upper portion 45 is apparent from an examination of the figure, as well as the various operations that take place in the press 20 for

  a row of containers under the action of the tools

  The upper and lower upper slides 49 and the slide 50 from the lower left corner of FIG. 6, the recessed sheet of a coil is intermittently advanced in the press, being moved from left to right. is first cut in a conventional manner between a shear ring 85 associated with the die and an associated shearing ring 86

  The punching ring 85 associated with the die

  it is moved by the slider 41 through a series of toggle joints, FIG. 8, which

  are driven by cams with side faces 41c, asso-

  to the blanks of the slider 41 The set of articula-

  87 has been designated (Figure 8) and functions as a knee brace.

  is provided on each side of the slider 41 a lower element

  knee brace 88 and a knee upper element

  Each lower element of the toggle joint 88 is pivotally mounted with respect to the inside.

  of the side wall 40a and it extends upwardly

  than a connecting pin with an upper element of

  knee pad 89 On the connecting pin between the ele-

  88 and 89, there is provided a contact 90 constituted by a roller which moves on the face of the cam 41

  upper elements of knee brace 89 are connected to pivo

  to a support 91 which moves the shear ring 86 located on the side of the punch As a result, the race

  of the cutting ring used to shear the sheet

  at its cutting edge is reduced to the minimum

  port 91 also blocks the sheet blank during the

  Cylinder formation portion The lower toggle members 88 are constituted by screw jacks 91a connected to the lateral members 40a and, by unscrewing the connection established with the elements 88, the flaps 90 can be moved away from the cam face. 41 c beyond

  of their normal stroke As a result, the system with

  nibbler 87 can be collapsed or grouped in such a way that an interval for maintenance is quickly established

in this part of the tooling.

  The recessed central portion 85a of the shear ring 85 located on the sidewall contains a bowl forming punch 92 which is connected to the slider

  41 and who moves 225 mm during his race.

  cage of the sheet blank after shearing and during the

  bowl formation is performed, as explained above.

  The punch 92 thus presses the bowl upwardly by clamping the shear ring 85 and a tool face 93 under the action of the toggle system 87, thereby forming the blank in a cylindrical, thin-walled dish. having a bottom but no collar,

  said bowl being supported against the lower magnetic tape

  drive 81, as shown in FIG. 6.

  The band 81 moves from right to left by driving the bowl in the same direction as the general direction of movement of the sheet in the right bowl cutting and forming tools.

  outside the press 20, the magnetic tape trans-

  carrier 81 is curved upward towards the

  83 and the bowl is transported to the first

  rollers 83 from which it is then driven.

  born between the guide bars 84 until it is

  brought into alignment with the avaht edge of the magnetic strip

  As shown in FIGS. 6 and 12, the conveyor belts move clockwise. The magnetic strip 82 drives the bowl upward and then bends in part 25-2. As shown in FIGS. 6 and 12, the bowl is arranged so that its opening is directed downwards and, when the transfer system 80 carries out its training, it rotates in an arc equal to 1800 mm. way to have

  its opening directed upwards The magnetic strip

  that drive 82 enters the upper part of the press with a slight angle of inclination to the

  top, as indicated at "A" in Figures 3, 4, 5 and 6.

  The cuvettes are maintained, when moving in the press, by an escape mechanism 94 which is provided to ensure that there is a sufficient number of cuvettes being conveyed by the band 82 to ensure the necessary introduction of the cuvettes in the first press re-pressing station More particularly, a cuvette holder 95 shown in FIG. 6 is provided for retaining the cuvettes on the conveyor belt 82 This support 95 acts only after

  the exhaust mechanism 94 has retained a sufficient number

  cups to ensure that an appropriate force

  required to be available to push the most distant bowl

  As the strip 82 is inclined upwards, the lower side wall of the last bowl on the strip 82 bears against the lower side wall of the bowl.

  located in the support 95, that is to say that

  you are in this support 95 has its axis aligned with

  that of the punch 73 and that the adjacent bowl or wedge

  on its axis oriented normally on the surface of the

  82 The upper edges or embossing

  of these two containers are spaced from each other

  because their side walls make the

  angle of inclination "A" of the conveyor belt, in

  therefore a space for moving

  tooling during the forming operation.

  Referring again to FIGS. 3, 4 and 6, it can be seen that the container is pushed through the first re-pressing die 96 which has the purpose of

  function to make the container deeper while decreasing

  diameter at the lower limit of the first

  the re-pressing stroke, the container is ejected from the

  punch 73 and he arrived on a transpor-

  The 97 tape is inclined towards the

  at an angle "A" for the same purpose as the

  82 The web 97 rotates clockwise advancing the re-pressed containers in the press 20 into the second re-profiling-profiling station. Accordingly, the intermediate conveyor belt 97 carries the containers having underwent the first stamping below the slider 50 and in alignment with the second re-stamping station which is placed in the rear slider

  49 The bowl support of the second re-filling station

  wise-profiling is associated with this station and it comprises on each side curved stops which are arranged not only to align the container with the axis of the second

  re-stamping punch 99 but which are also

  to allow the re-shaped and profiled container to be fed by a depression-actuated finger 98 to a

  deburring station 100 After completion of the second

  the container has a smaller diameter and can therefore be moved by the finger 98 through the corresponding slot in the direction of

post 100.

  The re-stamping punch pushes the recess

  almost entirely through a matrix of

  embossing 101 and it follows that a collar is left

  on the re-stuffed container Near the lower limit of the stroke, a bottom profiling tool is applied upwards against the bottom of the container under the action of the associated gas spring which is mounted in the press so as to create in the container a domed shaped bottom when said container reaches its lower limit of stroke This dome forming operation causes the container to substantially completely complete its final configuration When the punch 99 and its sleeve 102 retract upwardly the recessed container, the bottom of which is profiled, is driven upwardly through the re-pressing die 101 until it exits the die 101 at a point where it is aligned with the finger 98. 98 grasps the side of the container so as to pull it from the left towards

  the right while maintaining its vertical alignment.

  This movement under the impetus of the finger 98 causes the trans-

  filling the container into the deburring station 100

  so that the container is aligned for the purpose of

  the flange deburring operation More parti-

  In particular, there is provided a die 103 which has a diameter greater than that of the container but equal to the diameter of

  flange The die 103 is set so as to

  per flange to the required size for the

  realization of a double seal hermetically sealed A set

  Punching wire 104 pushes the unfabricated container down through the die 103 and

  so that the deburred container falls on a trans-

  magnetic carrier 105 placed below the die 103 so that the container can easily be removed from the press 20 The punch assembly 104 is attached to the rear side of the slider 49 so that

  to move with him As a result, when

  are available, each stroke of the rear slide

  re 49 re-stamping and profiling a recipe

  while simultaneously producing deburring of the

previous container.

  FIG. 6 shows a mechanism

  106 used to move the depression finger 98 This mechanism

  106 is designed to oscillate finger 98 between

  its container holding position, where it is

34 2516445

  The movement of the finger may not be purely alternative since it must move upwards to clear the deburring ring left at the end of the deflection station. upper part of the deburring matrix

  103 when the finger 98 moves towards its position

  where it should serve as a container support for the second re-profiling-profiling station.

  fingers 98 must be synchronized to deviate from

  jet followed by the flange of the bowl when it

  went down during re-stamping and before profiling

  ge and to deviate from the path followed by the set 104

  when it moves to the position of

  The mechanism 106 comprises a first portion 107 which is arranged to alternately move the finger 98 and a second portion 108 which is arranged to raise the finger 98 relative to the deburring die.

  103 The first and second parts are based on

  port to a drive shaft 109 but they are driven independently of each other The first part 107 executes a movement which is converted by a movement of

  rotation in an alternating movement by a connecting rod

  The second portion 108 is driven using eccentric rods 108a in a manner completely independent of the first part.

  but only as regards their respective systems.

training.

  In FIG. 8, the worm 34 has been shown to be supported by two roller bearings 111. These bearings are mounted in the walls of the crank case 33 and support the shaft which carries the worm 34 a Oil is supplied

  to the bearings 111 via a higher passage

  112 from the main pump to the press, in a well-known manner; this main pump has not been shown in the figures The main pump

2516445

  supplies oil with sufficient static pressure to all the operational components of the press

  the balancing of the flow, strangulation is

  in the different distribution passages to ensure that an appropriate flow control

  be established in the different areas of the press.

  More specifically, the passages 112 channel the oil through the upper walls of the casing 33 into

  111 bearings In order to ensure the evacuation of oil

  the located in the bearings and control the quantity

  oil passing through them, there are two

  111 which are used to empty the bearings 111.

  These passages 113 are connected by means of piping

  114 to a suction pump, not shown.

  In the preferred embodiment, a "MEGATOR Model L 75" pump (not shown) is used which can

  debit 30 liters per minute at a pressure of 3.1 bars.

  This pump is of a sliding shoe type, which includes eccentric discs sliding tightly into chambers placed inside the shoes so that an eccentric movement of the discs causes movement.

  horizontal discs and a vertical movement of hooves.

  The horizontal movement produces a displacement of fluid in the chamber; the vertical movement oscillates the shoe so as to control the entry and the discharge of the

  pump fluid In this case, synthase oil is used.

  Thing for gear to cool and lubricate

  the bearings 111, figure 8 Once the pump

  starts to work, a difference in hydraulic pressure

  that is established; this difference keeps the shoe in contact with the orifices that control the suction and

  pump discharge The MEGATOR pump can be used

  unleashed without priming because it is primed

  Repeatedly and automatically, the MEGATOR pump

  the L 75 with a slightly higher volumetric capacity

  than the volume needed to lubricate and cool

36 2516445

  the roller bearings 111 The pump can be used

  to pump fluids of high viscosity, to

  dry, to pump air, while maintaining

  still a large suction capacity The volume control

  The metric of the oil penetrating the roller bearings 111 and coming out strongly stressed is thus carried out accurately and a flow can be maintained.

of cooling lubricant.

  Of course, the invention is not limited

  to the embodiments described above and represented

  from which we can expect other modes and other forms of realization without

of the scope of the invention.

37 2516445

Claims (9)

  1 Big inverted type press with structure   superimposed structure comprising a first blank cutting station and forming cuvettes and a second embossing and re-pressing station characterized in that it comprises: a press comprising a common crank shaft (31) which is positioned below a position of   cutting blanks and forming bowls, in the-   what a thin sheet of raw material is first discovered   with a circular edge and is then pressed into a shallow bowl,   a stamping and re-stuffing station   ge placed above said blank cutting station and bowl formation to receive said   shallow bowls for stamping and re-stamping them   fired in the form of elongated, walled containers thin and with open ends.   2 Big machine for the execution of operations   on a thin sheet of raw material,   as a common drive system for moving the workstations of said machine, characterized in that: a first part of the machine comprises   a series of tools that are connected to this system of   for cutting a portion of said sheet and for performing a first operation on said part so as to   to reduce its overall flat dimensions by increasing   its total height, a second part of the machine is placed   in line with the first part and with the system of   said second part being associated with an   to carry out progressive operations on   sheet metal formed from the first part,   operations taking place in the said first part   about as much space as the operations are 38 2516445-   in said second part and a second system   practically the same extent as the- say first or second parts.   Big machine according to claim 2, characterized in that the first part, the second part and the drive system are aligned in a vertical superposition relationship with each other.   to others and in that said space corresponds approximately   the floor space necessary to support the ter said machine.   Big machine according to claim 2 or 3, characterized in that said drive system is placed at its base, in that said first part is placed above the drive system and in that   said second part is placed above said first first part.   Big machine according to claim 4,   characterized in that said drive system comprises   takes a crank shaft (31) having associated spans   referred to in Part One and Part Two   to ensure an independent race of the parts of the tillage.   6 Big machine according to one of the claims   1 to 5, characterized in that said first portion is a blank cutting and bowl forming portion for severing the circular disks.   from said sheet of raw material and to the trans-   form into a shallow bowl having a larger diameter small than that of said disc.   Big machine according to claim 6, characterized in that said second part is a stamping and re-pressing press which is designed to convert said bowl into an elongated thin-walled container.   8 Big machine according to one of the claims   1 to 7, characterized in that said first and 39 2516445   second parts comprise several rows   each to maintain a series of operations of cutting, formation of cuvettes, stamping, re-stamping   and deburring the sheet to obtain containers   thin-walled lanyards. 9 Process for converting a thin sheet of   metal in an elongated bowl-shaped container   a thin wall in a large laminated press in which the crankshaft   tooling in a blank and blank cutting station   The method comprises the steps of: establishing a blank cutting and bowl forming station which corresponds to an area of the bowl, which is located between the crankshaft and the embossing and re-pressing station;   o blanking and blanking operations   cups are made by tools that   moves on a relatively short race and that   turns the plate into a shallow bowl, transfer the shallow bowl into a deep drawing and re-pressing station   press, where the bowl is progressively stamped and   bice in the form of a tapered container, of a smaller diameter, this part being arranged in such a way that the area necessary for stamping and   repeeding is approximately equal to that required   for blanking and blanking operations.   cups and so that the races required   are longer than those corresponding to   blank cutting and bowl forming rations.