FR2471234A1 - PROCESS FOR THE DIRECT CONFORMATION OF BOX METAL BODIES WITH MOUTHS FOR THE PRESSURE ADJUSTMENT OF COVERS - Google Patents

Abstract

PROCESS INTENDED TO REALIZE, ON TUBULAR METAL BODIES, AN EXTERIOR BLOCK AT ONE END AND AN INTERNAL BLOCK AT THE OTHER END, IN A SINGLE OPERATION, SO AS TO ENSURE THE CLOSURE OF THIS BODY. TUBULAR BODY 1 ADJUSTS TO MATRIX 11. WHEN PESTLE 4 ADVANCES, MATRIX 6 BEGINS CONFIGURATION OF BLADDER 2 AND, BY PUSHING, BLADDER 3, WHICH TAKES FORM IN CAVITY B UNTIL THE STOPPER 12 OF MATRIX 11. THIS PROCESS APPLIES TO THE MANUFACTURE OF ALL TUBULAR METAL PACKAGING.

Description

The invention relates to a method or method for realizing

  directly on tubular metal bodies intended to form

  packaging and, more specifically, at one of their ends or open

  tures, a configuration or conformation giving them a profile similar to or similar to that of the metal receptacles used to contain

  paints or other perishable goods, adapted to receive a cover

  metal, in general, to be adjusted under pressure to avoid

that the content does not deteriorate.

  Metal cans, preferably tin cans,

  I0 aluminum or those of any other type, but especially the first

  are made from a laminated metal strip to which

  one gives a tubular form of any section, cylindrical, car-

  rectangular, oval or other, sealed in the longitudinal direction by

  a bead or by welding points.

  Cut at the predetermined height of the boot, the ends

  mites or resulting openings form an outward coil, on which the lids are fitted and secured by a traditional crimping system incorporating a rubber compound or any other

  similar material ensuring a hermetic closure.

  One of these lids was previously stamped with such

  so that it presents, concentrically, an opening of smaller diameter.

  as the section of the container. This opening has an outline or

  ledge having a profile, generally formed by a double rib and is

  in a deep pudding that penetrates inside the opening in

  a mouth of a certain height to receive the lid,

  stamped, shaped like a small saucepan, which adjusts under pressure

on this mouth.

  The operative steps of the previously disclosed process, which is the same as that traditionally used to prepare and manufacture packages of this nature, are known. According to the invention, it has been considered that the configuration of a ribbed mouthpiece with the traditional profile and the inner coil can be

  be made directly on one of the openings of the tubular body pre-

  ably configured, which offers the advantage of avoiding the

  operations of the manufacturing process and saves

  a significant amount of material, as well as

  work and other factors, no less important, arising from the former.

  According to the invention, it is possible to realize in one

  pressing operation for configuring an outer coil to

  chures (traditional operation), another inner coil to one of the openings of the tubular body, or the opening or end opposite to the previous one. The main features of the invention are as follows: The inner coil is larger or of a height greater than the outer coil and comprises, at least, a superior development to the profile with double rib or traditional profile necessary to close

the planned mouth.

  IO 2 - The inner coil is configured mainly from flat to

 , towards the inside.

  Preferably in a subsequent operation, said bead is stamped inside the container or inside the bead in question.

  I5 40 - The internal stamping produces, on the flat roll, the double profile

  ribbed with the deep inner cuff or flange already mentioned

  to configure the usual lid adjustment mouthpiece

shape of small saucepan.

  An exemplary embodiment for the configuration of this rim

  mouth is shown on the drawings accompanying the description of

  on which, in a somewhat schematic way and as a

  for example, are represented the main details of the invention.

On these drawings

  FIG. 1 represents a vertical sectional view of a possible set of or-

  tils for the realization of a first flanging operation.

  FIG. 2 is a view similar to the previous one of a possible set of tools

  for carrying out the second ribbing operation of the mouth.

  Figure 3 is a vertical sectional detail of the profile of this mouthpiece

  according to an embodiment of the invention.

  Referring to the operation of simultaneous configuration of strands, outside (traditional form) and inside (according to the invention)

  illustrated in Figure 1, we see the tubular body of the package 1 which will be-

  equipped with an outer coil 2, to receive by the traditional crimping system a lid or bottom, and a coil 3 which, according to the invention,

  is performed to configure the mouthpiece.

  It is assumed that the race of the pestle 4 of the press fills

  this double mission almost at the same time.

  This pestle has an extension 7 which includes, in the-part

  an etching die 5 forming the die 6 to form the

  din 2 outside, and which is equipped in its lower part with a print

  male 9 fixed by conventional means 8 to the expremity 7 of the pestle 4.

  This stamp 9 forms with the matrix II a coupling with an input A o is fitted to the end of the tubular body of the box and continues in an almost flat part B which forms the cavity for

the configuration of the coil 3.

  The cavity B is obtained by the projection 10 of the male stamp 9 and the groove I2 of the matrix 11, mutually complementary to each other, marked by the separation A and B which is equivalent, with a

  I0 slight tolerance, to the thickness of the body 1.

  The formation of the strands 2 and 3 is carried out as follows The tubular body 1 must adjust to the matrix 11. When

  the pestle 4 advances or begins its race, the male stamp 9 is accustomed to

  and, almost at the same time (controlled operation in time and pressure

  in similar pressing systems), matrix 6 starts the configuration

  2 and, by thrust, the coil 3, which takes shape in the cavity B to the stop 12 of the matrix 11. This stop acts as a

  counterpunch to complete the roll 2.

  On the preform 3, or roll 3, begins the flange or double ridge forming operation illustrated in FIG.

  is represented before having realized the profile which one can see figure 3.

  This rim is obtained by means of a male stamp 13 whose profile is adapted to the relief that we want to give in 3. This print-is

  formed substantially of a tubular body ring I3a so that the

  inner king tangant. I3b will allow the formation of the inner lapel

  deep 2I of the mouth of the packaging I9 (Figure 3).

  - This stamping is carried out on a matrix I5 equipped with a

  I6 and I7-level facilitating the exit of the pressed material, this

  matrix and this print is only a simple example of

tion.

  Another advantage of the invention is that these two operations can be performed chatne to better take advantage of manufacturing time. Figure 3 shows a symmetrical vertical part in section

  a packaging body 1 provided with the bead 2 intended to receive, by crimping

  conventionally, a lid or bottom closure and, at the opposite end

  placed, a ribbed upper rim 20 with the inner cuff 2I of the em-

  I9 mouthpiece, already shaped to receive lids, shaped like a small

  pan, traditional by pressure.

  It is easily understood that the invention makes it possible to substantially simplify the manufacturing operations insofar as it eliminates, on the one hand, the traditional crimping and, on the other hand, the independent stamping of the lid with the corresponding opening. . It also eliminates the loss of material that implies the formation of this

  opening and, in the end, that of making this cover, although the latter

  the operation is partly absorbed by the greater length of the body

  of the boot to form the pudding 3.

  This saves the sealing seal crimping, IO insofar as it is not realized and substantially

  work time is saved in a considerable proportion.

  In the same way, the profile indicated is only an example

  ple. We can make an inner pudding with any other ou-

  They are matrices of different shapes.

  The invention is not limited to the exact details of this exhibition.

  but, on the contrary, it may be brought to him the modifications considered

  without departing from the scope of the present invention.

Claims (6)

R E V E N D I C A T I 0 N S   1. Process for the direct conformation of metal bodies of boots with mouthpieces for the pressure adjustment of lids on which the generally cylindrical and tubular metal body of the boxes   has flanges external to their respective openings for re-   provided with traditional crimping bottoms or covers, characterized by the fact that this tubular metal body, of any section, is cut to the necessary height according to the packaging to be obtained and endowed at one of its openings ( the one planned or prepared to form the bottom of the packaging) of an outer pudding, is endowed   I0 at the other end of an inner coil made simultaneously with the pre-   yielding an inner return whose length or projection is larger than the outside, and which is subsequently configured according to a   doubly ribbed or reinforced profile to receive the usual lids   tiles in the form of a small pan adapting by pressure.   I5 2. Process for the direct conformation of metal bodies of boxes with   mouthpieces for pressure fitting lids according to the   1 characterized by the fact that the aforementioned inner coil   is obtained by applying a pressure or press shot   by the end or opposite opening (opening with   laughter), axially at the height of the package and with a set pressure. 3. Process for the direct conformation of metal bodies of boxes with   mouthpieces for pressure fitting lids, in accordance with   in claim 2, characterized by the fact that the second inner bead   is carried out by pressing in the axial direction at the height of the metal body of the package by means of a print constituted by   two parts, male and female, closed, with cylindrical body   according to the thickness of the latter, so that the   matrix has at least one flat-bottom concave cavity with exit or   inward movement limited by the width of the flange to be obtained and, the male, a bead complementary to the profile or silhouette provided for the folding.   4. Process for the direct conformation of metal bodies of boxes with   mouthpieces for pressure fitting lids according to the   Claims 2 and 3, characterized in that the operation for forming the double rib and the inner cuff for the adjustment of the lid is performed by means of a matrix where the inwardly facing opening of the fitted package rests. at the fold but designed with an outlet for the latter, and playing the role of counterpunch for a tool (tubular) mounted on the press drum which penetrates axially   inside the metal body by acting inside, to   include the rib and the inside rim mentioned. 5. Process for the direct conformation of metallic bodies of cans   with mouthpieces for pressure fitting lids, comfortably   according to claim 1, characterized in that the inner coil configuration operation and the double ribbing take place   Io in a single stamping operation by combining the two tools.   6. Process for the direct conformation of metal bodies of cans   with mouthpieces for pressure adjustment of lids according to   in accordance with claims 1 and 5, characterized by the fact that   configuration of the inner coil can be made in such a way   I5 multanate with the traditional operation of configuring the outer coil for crimping the lid or bottom opposite the opening of the packaging.