FR2542279A1 - CRIMPING DEVICE - Google Patents

Abstract

THE INVENTION RELATES TO A CRIMPING DEVICE FOR FIXING A BOTTOM AND OR A LID WITH AN ANNULAR FLANGE IN THE END OF A HOLLOW METAL TUBULAR BODY, IN PLASTIC OR COMPOSITE MATERIAL. THIS CRIMPING DEVICE IS CHARACTERIZED IN THAT IT INCLUDES TELESCOPIC MEANS 45 EXERCISING WITH A CERTAIN FORCE A LATERAL THRUST EXTENDING PRACTICALLY OVER THE ENTIRE SURROUND OF THE HOLLOW TUBULAR BODY 2 PROVIDED WITH THE BOTTOM AND / OR THE COVER 3 FOR CONTROLLING BELT 55 ADAPTED TO THE SECTION OF THE HOLLOW TUBULAR BODY. THE INVENTION RELATES TO THE MANUFACTURE OF COMPOSITE BODY PACKAGING.

Description

The invention relates to a crimping device for fixing a

  bottom and / or an annular flange lid in the end of a

  hollow metal tubular body, made of plastic or composite material.

  For fastening a bottom and / or a cover on the end of a hollow tubular body, crimping is generally carried out

  after having introduced the bottom and / or the lid into the tubular body

  or that the end of the hollow tubular body is bent inward, or that this end and the annular rim of the bottom or lid are crimped together However, it frequently happens

  that during crimping, the end of the hollow tubular body deforms

  especially if the body is a composite body made of several

  strips of cardboard glued together It often happens that at the

  deformations, the packaging is no longer perfectly sealed and the

  container can escape through tiny passages due to these

  In addition, crimping is done vertically and, in general,

  From the bottom upwards, it is necessary to exercise

  on the hollow tubular body a thrust directed in the opposite direction

  It can be exerted only from the top of the hollow tubular body Not only, there is a risk of compression of this body but also it is possible to crimp only containers whose height of the tubular body

  hollow corresponds to the height of the passage between the crimping tool

  wise and the means pressing on the top of the body in question.

  The present invention aims to overcome these disadvantages and proposes to provide a crimping device for, on the one hand, the attachment of a bottom and / or cover on a hollow tubular body without deformation of the latter , and, on the other hand, to delete all

  means pressing on the top of the body as currently known.

  For this purpose, the invention relates to a crimping device for

  fixing a bottom and / or a flanged-annular cover in the

  tremité of a metal hollow tubular body, made of plastic or composite material, characterized in that it comprises telescopic means

  exerting, with some force, a lateral thrust extending practically

  all around the hollow tubular body with the bottom

  and / or cover to apply against a belt adapted to the sec-

hollow tubular body.

  The advantages achieved by this invention consist essentially of

  in that it eliminates any deformation of the hollow tubular body during crimping, which provides a good seal between this

  last and the bottom and / or lid In addition, the height of the body tu-

  the hollow bead is no longer dependent on the height of the

crimping.

  According to a first embodiment, the telescopic means exert a lateral thrust from, the center outwards and cooperatively

  with a belt encasing the outer circumference of the tubular body.

hollow.

  According to a second embodiment, the telescopic means

  exert lateral thrust from the outside to the center and cooperate

  with a belt on which is applied the inner face of the re-

  annular edge of the bottom and / or lid capped by the end of the body

hollow tubular.

  The invention will be well understood with reference to the following description:

  as a non-limitative example and in the drawing attached hereto

  sensing only the first embodiment, drawing in which:

  FIG. 1 is a view in elevation and in section, along the line of

  I-I of Figure 2, the crimping device according to the invention.

  FIG. 2 is a sectional view along section line II-II of FIG.

re 1.

We refer to both figures.

  From the top, we put the lower end 1 of a tu-

  hollow bung 2, preferably composite and provided with a lid or

  of a bottom 3 having an annular flange, in a crimping device

5 according to the invention.

  The crimping device 5 comprises a central cylinder 6 or any other thrust device whose piston 7 is integral with the lower end 8 of an axis 9 sliding vertically This axis 9 moves in bearings 10, 11 housed in a bearing 12 solidary of a seat

  13 The latter is fixed by columns 14, -15, 16, 17 to the bridge.

  18 of the central cylinder 6 or any other thrust device.

  The shaft 9 has at its upper end 19 a recess 20 to obtain a shoulder 21 on which is threaded a sole 22 made integral with said axis 9 by any means to this sole 22 is fixed the base 23 of a tool crimping 24 Between the top 25 of the sole 22 and the bottom 26 of the base 23 is inserted a compressible material 27 serving as a damping buffer. This crimping tool 24, comprising a resistor 28 and a probe 29, slides inside - 3d'a vertical jacket 30 whose lower end 31 is secured to the top 32 of the seat 13 On its upper periphery 33, the crimping tool 24 has a bevelled edge 34 on which the song slides

  of the lower end 1 of the hollow tubular body 2

  seauté 34 abuts a forming bowl 36 conferring, at the lower end 1 of the hollow tubular body 2, the crimping bead 37

  preventing the lid or bottom 3 from coming out of the hollow tubular body 2.

  In the crimping tool 24, two vertical openings 38 are used.

  39 crossed by amounts 40, 41 connecting the seat 13 to a central block

  tral 42 The perimeters of the vertical jacket 30, of the crimping tool

  24 and the central block 42 are adapted to the section of the tubular body.

  hollow 2, the latter being round, oval or polygonal.

  In crimping phase, that is to say when the crimping tool 24 exerts a thrust directed from bottom to top on the edge 35 of the lower end 1 of the hollow tubular body 2 to imply auditing

  singing 35 the forming necessary to obtain the bead of sertissa-

  37, it is necessary to keep said lower end in place

re 1 of the hollow tubular body 2.

  According to the spirit of the invention, the retention in place of said end

  lower mite 1 is made by peripheral nip between the vertical liner 30 and the central block 42 However, for the establishment of the lower end 1 of the tubular body 2 and especially to remove the crimped container, it is necessary to provide a space sufficient between the outer periphery 43 of the central block 42 and a belt 55 secured to the inner periphery 44 of the vertical jacket 30 to allow the

  easy passage of crimping bead 37.

  For this purpose, the invention provides telescopic means 45

  on the one hand, a sufficiently large pinch of the inner end

  1 of the tubular body 2 in crimping phase and, secondly, a sufficient space for the passage-crimping bead 37 It can be recommended two embodiments, or the telescopic means protrude from the outer periphery 43 of the central block 42 for crimping and retract inside the central block 42 for the introduction of the lower end 1 of the hollow tubular body 2 and for the withdrawal of the crimped container, or the telescopic means 45

  are an integral part of the vertical shirt.

  By way of nonlimiting example, a particular embodiment will be described in which the telescopic means 45 are part of the block 4-

central 42.

  According to this particular embodiment, the telescopic means are a plurality of jacks 46, 47, 48, 49 of which the piston 50, 51,

  52, 53 cooperates with the inner face 54 of the annular flange 4 of the cover

  cle or the bottom 3 by exerting a lateral thrust on the annular rim 4 thrust transmitted to the lower end 1 of the tubular body 2 so that it is applied against the belt 55 secured to the inner periphery 44 of the vertical liner 30 The cooperation between the pistons 50, 51, 52, 53 and the belt 55 provides the pinching described above, the force of this pinch being predetermined and function of

  the lateral thrust exerted by said pistons 50, 51, 52, 53.

  cylinders 46, 47, 48 and 49 are distributed throughout the perimeter of the

central block 42.

  According to a variant, each of the pistons 50, 51, 52, 53 comprises

  at their ends, segments that are rectilinear or curvilinear

  at the section of the hollow tubular body 2, these segments being supported

  against the annular flange 4 As a result, the area of pres-

  while reducing the number of telescopic means 45.

  According to another variant, the pistons 50, 51, 52, 53 are connected

  between them by the said segments. Thus, in the case of a rectangular section,

  of the hollow tubular body 2, it suffices to provide two jacks 46,

47 per side.

  It is practiced in the core 56 of the central block 42 a number of bores

  57, 58, 59, 60 corresponding to the number of cylinders 46, 47, 48, 49.

  wise 57, 58, 59, 60 constituting the bodies of the cylinders 46, 47, 48, 49 ser-

  compression chamber wind at the cylinders 50, 51, 52, 53 Each bore 57, 58, 59, 60 is closed by a cover 61 provided with an outer seal 62 and inside 63 sealing the bore 57, 58 , 59, 60 Through this cover 61 slides the piston 50, 51, 52, 53 The latter comprises a seal 64 to obtain two chambers of

  compression 65, 66 The compression chamber 65 is connected to a first

  first supply of air or pressurized liquid 67 through a hole 68 opening on the one hand into said compression chamber 65

  and, on the other hand, in an annular chamber 69, an orifice 70

  se in the central block 42 opening into the annular chamber 69 and located in the alignment of a bore 71 formed in one of the uprights 40

  and on which said supply 67 is connected.

  Similarly, the second compression chamber 66 is connected to a second

  The supply of air or pressurized liquid 72 through a hole 73, a second annular chamber 74, an orifice 75 and a bore 76 parallel to the bore 71. pressurized fluid the second compression chamber 66, it causes the advance of the piston 50, 51, 52, 53 while by supplying fluid under pressure the first compression chamber 65 is caused, on the one hand, the decline of the

  piston 50, 51, 52, 53 and, on the other hand, the delivery of the fluid containing

  mated in the second compression chamber 66.

  However, the telescopic means 45 are not necessarily pneumatic or hydraulic means Indeed, these means may be mechanical means For example, instead of a piston, it uses sliding rods actuated by a set of connecting rods and shafts. Or, we use threaded rods actuated by an element

  motor and cooperating with tapped holes made in the central block

tral 42.

  According to another embodiment, the various telescopic means

  pikes 45 are integral with the vertical shirt 30 In this

  the telescopic means 45 exerting a directed pressure from outside the

  towards the center on the outer circumference 77 of the lower extremity.

  1 of the hollow tubular body 2, the pressure transmitted to the annular flange

  4 of the lid or bottom 3 apply the inner face 54 of this last

  deny and the lower end 1 of the hollow tubular body against a belt

integral with the central block 42.

  Although the invention has been described with respect to a form of embodiment

  particular situation, it is understood that it is in no way

  different forms, materials and

  and combinations of these various elements, without thereby becoming

  the framework and spirit of the invention.

6

Claims (10)

claims   1 Crimping device for fixing a bottom and / or an annular flange lid in the end of a metal hollow tubular body, made of plastic or composite material, characterized in that it comprises telescopic means 45 exerting with some force a lateral thrust extending practically all the way around the   hollow tubular body (2) provided with the bottom and / or the cover (3) for the application   bend against a belt (55) adapted to the section of the hollow tubular body. 2 crimping device according to claim 1, characterized in that the lateral thrust is a thrust directed from the center   outward and that the belt (55) secured to a vertical   wedge (30) surrounds the outer periphery (74) of the hollow tubular body (2).   3 crimping device according to claim 1, characterized in that the lateral thrust is a thrust directed from the outside toward the center and that the belt (55) integral with a central block (42) is applied against the inner face ( 54) of the annular flange (4) of the bottom or the lid (3) capped by the end (1) of the tubular body hollow (2).   4 crimping device according to claim 1, characterized in that the telescopic means (45) are pneumatic or hydraulic cylinders (46,47,48,49), whose pistons (50,51,52,53) cooperate with the belt (55) for simultaneous peripheral pinching of the annular flange (4) of the bottom or lid (3) and the end (1) of the body hollow tubular (2).   5 crimping device according to claim 1, characterized in that the telescopic means (45) are mechanical means formed by sliding rods, threaded rods or other actuated by control assemblies such as connecting rods camshaft, motor element or   analogous positions occupying a projecting position for pinching or a posi-   retracted for the placement or removal of the crimped container.   6 crimping device according to claim 4, characterized in that the pistons (50,51,52,53) comprise curvilinear segments   and / or rectilinear adapted to the section of the hollow tubular body.   7 crimping device according to claim 4, characterized in that the pistons - (50,51,52,53) comprise segments connecting them in pairs.   8 crimping device according to claim 4, characterized in that the bodies of the cylinders (46, 47, 48, 49) are bores (57, 58, 59, 60) made in the core (56) of a block central (42) connected by uprights (40,41) to a seat (13) fixed by small columns (14,15,16,17)   at the flange (18) of a central cylinder (6) or any other device for pushing   actuating a crimping tool (24).   Crimping device according to claim 8, characterized   in that the bores (57,58,59,60) comprise two chambers of compres-   (65,66) disposed on either side of the piston (50,51,52,53) and a   cover (61) traversed by said piston (50,51,52,53).   Crimping device according to claim 9, characterized in that each chamber (65) downstream of the piston (50,51,52,53) is connected to a first supply of pressurized fluid (67) via a hole (68), a first annular chamber (69) and an orifice (70) made in the central block (42) and a bore (71) made in one of the amounts (40,41).   11 crimping device according to claim 9, characterized in that each chamber (66) upstream of the piston (50,51,52,53) is connected to a second supply of pressurized fluid (72) via a hole (73), a second annular chamber (74) and an orifice (75) made in the central block (42) and a bore (76) parallel to the piercing (71).   Crimping device according to claims 2, 3 and 8,   characterized in that the vertical liner (30), the crimping tool   (24) and the central block (42) have a perimeter adapted to the hollow tubular body (2).