Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21D7/00—Bending rods, profiles, or tubes
  • B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
  • B21D7/024—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment by a swinging forming member

Definitions

• the present invention relates to a strip support for a machine for bending tubes and more particularly for bending machines allowing the bending of a tube either to the left in a direction known as clockwise, or to the right in a direction anti-clockwise.
• the machine for bending tubes described in the patent application in France N ° 0116593 comprises:
• a bending arm provided with a jaw support which moves horizontally in the direction of the bending head, said jaw support being integral with a clamping jaw which comprises at least one jaw for bending in a clockwise direction of the tube and at least one jaw for bending in a counterclockwise direction of the tube, said jaws being fixed between them, * a bending roller which is fixed on the bending arm and which comprises at least one jaw for the following bending a clockwise direction of the tube and at least one jaw for bending in a counterclockwise direction of the tube, said jaws being offset laterally with respect to each other and on either side of the vertical axis XX 'of the head bending, *> a first strip support which includes at least one jaw for tight support of the tube during its bending in a clockwise direction, *> and a second strip support which c has at least one jaw for tight support of the tube during its bending in a counterclockwise direction.
• the machine described above has two independent slide supports for respectively bending in a clockwise and anti-clockwise direction.
• the strip support according to the present invention makes it possible to simplify and replace the first and second strip supports while allowing bending to be carried out in a clockwise and anti-clockwise direction.
• the strip support according to the present invention can be arranged and mounted on any type of machine for bending tubes.
• the strip support according to the present invention comprises at least two strips whose respective imprints are arranged in opposite directions relative to the position of the tube to be bent and means for guiding and moving the strips on the bending head.
• the strip support according to the present invention comprises a body guided in horizontal translation on a plate secured to the bending head and comprising, opposite the guide means, at least two strips arranged parallel to one another.
• the strip support according to the present invention comprises a body comprising on its upper face and in a direction perpendicular to that of the guide means of the parallel rails each cooperating with a strip.
• the strip support according to the present invention comprises a first strip which includes a cylinder portion imprint whose internal diameter depends on that of the tube to be maintained during its bending between the jaws of the clamping jaw.
• the strip support according to the present invention comprises a second strip comprising a cavity in the portion of a cylinder whose internal diameter depends on that of the tube to be maintained during its bending between the other jaws of the clamping jaw.
• the strip support according to the present invention comprises strips which are immobilized on the rails so that their respective imprint is arranged in opposite directions relative to the horizontal axis of the machine materialized by the tube.
• the strip support according to the present invention comprises strips which make it possible, respectively, on the same bending machine, to bend left or counterclockwise, or to bend right or clockwise.
• Figure 1 is a perspective view illustrating a machine for bending the tubes comprising the strip support according to the present invention.
• Figure 2 is a perspective view showing in detail the bending head of the bending machine provided with the strip support according to the present invention.
• Figure 3 is a perspective view showing in detail the strip support according to the present invention.
• Figures 4 to 7 are perspective views illustrating the different steps of the bending machine to achieve by means of the slider support according to the present invention a bending in a counterclockwise direction since the bending arm moves from the left to the right around the bending head.
• Figures 8 to 10 are perspective views showing the different steps of the bending machine to achieve by means of the slide support according to the present invention a bending in a clockwise direction since the bending arm moves from the right to the left around the bending head.
• FIG. 1 to 3 There is shown in Figures 1 to 3 a bending machine 1 whose fixed frame 2 carries at one of its ends a bending head 3 around which pivots a bending arm 4 for the formation of a tube 5 is following a clockwise direction, or in a counterclockwise direction.
• the fixed frame 2 comprises, opposite the bending head 3 and along its longitudinal axis, a carriage 6 which can approach and / or move away from the bending head 3 depending on the type of the bending machine.
• the carriage 6 includes fixing means 7 for receiving and fixing a tube 5 so as to be able to move it in translation and in rotation about its axis.
• the bending arm 4 comprises a jaw support 8 which moves horizontally in the direction of the bending head 3.
• the bending arm 4 is integral with a bending roller 9 constituting a device for fixing a clamping jaw 12 comprising at least one jaw 10, 11 of different bending radii.
• the clamping jaw 12 comprises on the jaw support 8 of the bending arm 4 at least one jaw 13, 14 intended to cooperate respectively with those 10, 11 of the bending roller 9.
• the bending head 3 comprises slide means 15, 16 respectively allowing the movement of the bending head 3 in horizontal and vertical directions relative to the fixed frame 2.
• the bending head 3 can move, by means of slideways 15, in horizontal directions going from left to right and vice versa with respect to the frame 2.
• the bending head 3 can move , by means of slideways 16, in vertical directions going from top to bottom and vice versa with respect to the frame 2.
• the jaws 10, 13 and 11, 14 of the clamping jaw 12 can, depending on the programming of the bending machine 1, for example, bend the tube 5 along different radii of curvature in a clockwise direction.
• the jaws 10, 13 and 11, 14 of the clamping jaw 12 can also, depending on the programming of the bending machine 1, carry out, for example, the bending of the tube 5 according to different radii of curvature in a counterclockwise direction.
• the jaws 10, 13 of the clamping jaw 12 can, depending on the programming of the bending machine 1, bend the tube 5 along a radius of curvature in a counterclockwise direction, while the jaws 11, 14 of the clamping jaws 12 realize the bending of the tube 5 according to a radius of curvature identical or different from that previously formed but in a clockwise direction.
• the bending head 3 comprises between its slide means 15 and 16 a horizontal plate 17 comprising parallel guide rails 18, 19 for the sliding of a strip support 20.
• the slide support 20 can move in a horizontal direction so as to approach or move away from the clamping jaw 12 of the bending machine 1.
• the sliding of the slide support 20 in the direction of the clamping jaw 12 is arranged in a horizontal plane which is perpendicular on the one hand to that containing the slide means 15 for the horizontal movements of the bending head 3 relative to the frame 2 and on the other hand to that containing the slide means 16 allowing the vertical movements of the bending head 3 relative to the frame 2.
• the strip support 20 comprises a body 21 provided on its lower face 22 with guides 23 and 24 intended to cooperate respectively with the rails 18 and 19 of the plate 17.
• the body 21 of the strip support 20 comprises on its upper face 25 and in a direction perpendicular to that of the guides 23, 24 parallel rails 26 and 27 each cooperating with a strip 28 and 29 in order to allow either sliding or immobilization of these on the body 21.
• the strip 28 comprises an imprint 30 which can be in the portion of a cylinder whose internal diameter depends on that of the tube 5 to be maintained during its bending between the jaws of the bending roller 9 and of the clamping jaw 12.
• the strip 29 comprises a imprint 31 which can be in the portion of a cylinder whose internal diameter depends on that of the tube 5 to be maintained during its bending between the jaws of the bending roller 9 and of the clamping jaw 12.
• the profile of the imprints 30, 31 of each strip 28, 29 depends on that of the tube 5 to be bent which can have any external shape.
• the strips 28 and 29 cooperate with the rails 26 and 27 so that their respective imprint 30 and 31 is arranged in opposite directions relative to the horizontal axis of the machine 1 materialized by the tube 5.
• the cavity 30 of the strip 28 is turned on the side of the bending roller 9, while the cavity 31 of the strip 29 is directed towards the clamping jaw 12 when the jaw support 8 is disposed to the left of the tube 5. It can be seen that the number of strips 28, 29 depends on the number of jaws 10, 13 and 1 1, 14 on board the machine for bending tubes 1.
• the imprints 30 and 31 of the strips 28 and 29 are offset in height relative to each other, this offset being induced by the position of the jaws 10, 13 and 11, 14 of the clamping jaw on the arm bending 4.
• the strip 28 is applied against the tube 5 when the latter is bent by the jaws 10, 13 of the clamping jaw 12, while the strip 29 is applied against the tube 5 when the latter is bent by the jaws 11, 14 of the clamping jaw 12.
• the inverted position of the strips 28 and 29 makes it possible, respectively, on the same bending machine 1, to bend left or counterclockwise, or to bend right or clockwise.
• the jaws 11, 14 of the clamping jaw 12 and the strip 29 of the strip support 20 allow the tube to be bent in a clockwise direction, because the bending arm 4 moves from right to left to the left around the bending head 3.
• FIGS. 4 to 7 show the different stages of bending the tube 5 so as to produce a hanger in a counterclockwise direction. IW lflt W » ⁇ wi j T a
• FIG. 4 illustrates the positioning of the tube 5 inside the jaws 10 and 13 of the clamping jaw 12 for carrying out a first bending.
• the strip 28 of the strip support 20 is in tight contact against the tube 5 so that the latter is housed in the cavity 30.
• FIG. 5 represents the bending of the tube 5 in a counterclockwise direction by means of the pivoting of the bending arm 4 around the bending head 3.
• the strip 28 allows the accompaniment of the tube 5 which slides inside its imprint 30 due to the rotation of the jaws 10, 13 of the clamping jaw 12.
• FIG. 6 shows the opening of the clamping jaw 12, that is to say the distance of the jaws 10 and 13 from each other in order to release the curved part of the tube 5.
• the opening of the jaw of tightening 12 is effected by the sliding of the jaw support 8 on the bending arm 4 in the tilted position.
• the strip support 20 moves horizontally on the plate 17 to move the strip 28 away in order to release the tube 5 from the imprint 30.
• the carriage 6 advances the tube 5 to release its curved part from the jaw 13 secured to the bending roller 9.
• FIG. 7 illustrates the return of the bending arm 4 to its original position before the bending of the tube 5.
• the return of the bending arm 4 is carried out with the clamping jaw 12 and the strip support 20 in the same position as that described in FIG. 6.
• FIGS. 8 to 10 show the different stages of bending the tube 5 so as to produce a hanger in a clockwise direction.
• FIGS. 8 and 9 show the clearance of the tube 5 previously bent from the bending zone by the displacement of the bending head 3.
• the bending head 3 is moved vertically downwards from the bending machine 1 so that the assembly bending head 3, bending arm 4 and strip support 20 is located below the tube 5 held in the carriage 6 secured to the frame 2.
• the strip support 20 is moved horizontally on the plate 17 so that the strip 29 is to the right of the tube 5 to be bent.
• FIG. 10 illustrates the positioning of the tube 5 inside the jaws 11 and 14 of the clamping jaw 12 for the realization of a second bending.
• the strip 29 of the strip support 20 is in tight contact against the tube 5 so that the latter is housed in the cavity 31.
• the second bending of the tube 5 in a clockwise direction is carried out by means of the pivoting of the bending arm 4 around the bending head 3.
• the strip 29 allows the accompaniment of the tube 5 which slides inside its imprint 31 of the rotates the jaws 11, 14 of the clamping jaw 12.
• the strip support 20 makes it possible, by virtue of the position between them of the strips 28 and 29, to perform on a standard machine 1 clockwise and counterclockwise bending of a tube 5. It should moreover be understood that the foregoing description has been given by way of example only and does not in any way limit the field of the invention from which one would not depart by replacing the details of executions described by any other equivalent.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Bending Of Plates, Rods, And Pipes (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=29720018

Family Applications (1)

Country Status (5)

Families Citing this family (11)

Family Cites Families (5)

• 2002
  • 2002-06-25 FR FR0207847A patent/FR2841162B1/fr not_active Expired - Fee Related
• 2003
  • 2003-06-25 US US10/518,359 patent/US7143621B2/en not_active Expired - Fee Related
  • 2003-06-25 CA CA002490000A patent/CA2490000A1/fr not_active Abandoned
  • 2003-06-25 WO PCT/FR2003/001949 patent/WO2004000479A1/fr not_active Application Discontinuation
  • 2003-06-25 EP EP03748181A patent/EP1539392A1/de not_active Withdrawn

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events