EP0809552A1 - Machine a evaser des extremites de tubes par bouterollage - Google Patents
Machine a evaser des extremites de tubes par bouterollageInfo
- Publication number
- EP0809552A1 EP0809552A1 EP96903084A EP96903084A EP0809552A1 EP 0809552 A1 EP0809552 A1 EP 0809552A1 EP 96903084 A EP96903084 A EP 96903084A EP 96903084 A EP96903084 A EP 96903084A EP 0809552 A1 EP0809552 A1 EP 0809552A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tube
- machine according
- spindle
- block
- jaws
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
- B21D19/00—Flanging or other edge treatment, e.g. of tubes
- B21D19/02—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge
- B21D19/04—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge shaped as rollers
- B21D19/046—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge shaped as rollers for flanging edges of tubular products
-
- 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
- B21D41/00—Application of procedures in order to alter the diameter of tube ends
- B21D41/02—Enlarging
Definitions
- the present invention relates to a machine for flaring ends of tubes by rolling.
- the tight connection of the rigid tubes to the various orifices of the apparatuses of the installation is generally carried out using collar fittings.
- These connections include an internally shouldered nut engaged on the tube to be connected, at the end of which is a collar.
- the shouldered nut is mounted captive on the tube and can be screwed onto a threaded end piece integral with an orifice of a device.
- a seal can be placed between the end of the tube and the device to complete the seal.
- the collar can for example be brazed on the end of the tube.
- the collar and the end of the tube must be cleaned. This cleaning increases the time required to complete the fitting and increases the cost of the operation.
- the time and cost of making such a collar are high.
- the document FR 2 642 500 describes a method for producing a connector, according to which the collar of the tube is produced by rolling. This process allows a connection to be made quickly and economically.
- Document US 3,610,016 describes a machine for flaring the end of a tube.
- This machine has a base on which are mounted, on the one hand, a fixed assembly comprising two jaws intended to receive the tube to be flared and on the other hand, an assembly movable in translation towards the jaws comprising a tool and moved by a attached cylinder.
- the tool of this mobile assembly is rotated about an axis parallel to the axis of movement of the mobile assembly and is therefore driven by a cylindrical movement.
- a motor placed for example under the base of the machine, provides the energy necessary for the proper functioning of the latter.
- the document EP 0 462 719 describes a machine for flaring hot tubes.
- This machine is intended to be used in the field of petroleum exploration at sea. It comprises a base formed by two end plates connected by four parallel tubes, a mobile carriage mounted to slide on the four tubes, a tool driven in rotation around an axis parallel to the tubes and mounted on the mobile carriage, means for holding the tube to be flared, as well as means for moving the carriage.
- the structure of known machines makes them heavy, bulky and not very transportable. In addition, most of them do not allow an orbital movement of the tool.
- the object of the invention is then to provide a machine making it possible to flare the ends of tubes by cold rolling, in particular for producing collar fittings, the structure of which is simple, so that this machine can be compact and easily transportable.
- the machine it offers is of the type comprising a rivet mounted in a support, two jaws forming a clamping jaw intended to hold one end of a tube to be flared, drive means making it possible to animate the snap with an orbital movement, drive means enabling it to be brought closer to the end of the tube and means enabling it to be moved away from it.
- the jaws are arranged in a fixed jaw holder forming a first block of the machine, a second fixed block faces the first block and a movable block comprising the chuck, its support and its drive means has guide means connecting the two fixed blocks and is driven in translation by a hydraulic cylinder comprising a cylinder body and a cylinder chamber arranged in the second fixed block, as well as by a cylinder piston secured to the movable block.
- a hydraulic cylinder comprising a cylinder body and a cylinder chamber arranged in the second fixed block, as well as by a cylinder piston secured to the movable block.
- the structure of this machine is simple and allows to realize a compact machine.
- the second fixed block incorporates part of the means making it possible to bring the chuck closer to the end of the tube to be flared.
- this hydraulic cylinder is supplied by a hydraulic pump mounted on the movable block.
- the dowel is mounted in a spindle, itself mounted by means of bearings in a spindle support driven in rotation by the means drive in an orbital movement of the spindle, the axis of the spindle and its spindle forming an angle with the axis of rotation of the spindle support, thus allowing to animate the spindle of an orbital movement.
- the dowel, the spindle and its support are mounted one inside the other. The length of the entire assembly is then barely greater than that of the spindle support.
- the drive means in a movement orbital of the dowel include a motor whose output shaft, provided with a pulley, is connected to the spindle support by a belt.
- the motor may be above, below or at the height of the assembly to be driven.
- the hydraulic pump supplying the hydraulic cylinder comprises a piston on which acts an eccentric mounted at the end of the axis of rotation of the spindle support.
- the spindle support then activates the hydraulic pump using the eccentric.
- the means for driving in an orbital movement also drive the hydraulic pump and therefore also make it possible to bring the chuck closer to the end of the tube.
- a single motor can therefore suffice for these two movements.
- the hydraulic pump supplies the hydraulic cylinder through the interior of the piston of the cylinder.
- the movable block comprises at least one stop finger intended to come into abutment at the end of the race against a jaw tightening the end of the tube and the machine comprises a pressure switch connected to the cylinder chamber and controlling a solenoid valve, so that, when the pressure in the cylinder chamber is too high, the cylinder chamber is connected to an oil tank.
- the drive means making it possible to animate the dowel of an orbital movement comprise an electric motor whose power is cut off when the pressure switch actuates the solenoid valve. The machine stops automatically at the end of the cycle.
- the invention also provides a device for connecting the cylinder chamber with an oil tank, this device comprising a calibrated valve open when the pressure in the cylinder chamber exceeds a predetermined value and a drawer, one end of which is communication with the cylinder chamber when the valve is open and controlling the opening of a passage between the cylinder chamber and the oil tank.
- the means for guiding in translation of the movable block they advantageously comprise two columns connecting the two fixed blocks. These two columns allow good guidance and stiffen the entire machine.
- means allowing the dowel to be brought closer to the end of the tube have been described.
- These means include a hydraulic cylinder.
- the jack described could be replaced by a double-acting jack.
- the means for moving the head away from the end of the tube to be flared include compression springs placed between the first fixed block and the movable block.
- the drive means making it possible to bring the chuck closer to the end of the tube to be flared work against the springs, and when these means no longer act, the springs move the movable block away from the first block fixed.
- the jaw holder In order to properly hold the end of the tube to be flared, the jaw holder has a dovetail shape in which the two jaws of complementary shape come to engage, so that, by wedge effect, when the bolt comes to bear against the end of the tube, the two jaws tend to approach each other, thus tightening the tube.
- the first fixed block has a shoe which, on one side, faces a jaw when the jaws are placed in the jaw holder and, on the other side can be pushed towards this jaw by an eccentric actuated using a lever, in order to bring the two jaws closer to each other and thus to maintain the end of the tube.
- the first fixed block comprises a movable stop against which the end of the tube to be flared abuts in order to allow good positioning in the jaw and articulated around an axis between a first position where it faces the jaws on the side of the head and a second position where it is spread so as not to interfere with the action of the head on the end of the tube.
- the movable stop comprises a lever
- the movable block is equipped with a cam having an inclined surface, cooperating with the lever of the movable stop, so as to pass the stop in his position pushed aside when the snap heads towards the first fixed block.
- the translational movement of the movable block can also be used to actuate a lubrication device.
- the machine includes a sprayer intended to spray a lubricant, oriented towards the end of the tube to be flared and mechanically actuated when the movable block approaches the first fixed block.
- Figure 1 is a longitudinal sectional view along the section line I-I of Figure 2;
- Figure 2 is a top view partially in section
- Figure 3 is a sectional view, on an enlarged scale, of a hydraulic valve for controlling the stopping of a rolling operation
- Figure 4 is a perspective view, on an enlarged scale, of a detail that can be adapted on the machine shown in Figures 1 and 2.
- FIGS 1 and 2 show a machine according to the invention in an overview.
- This machine essentially comprises three parts which can be clearly distinguished in these two figures: a front fixed part 1, a rear fixed part 2 and a movable part 3 situated between these two fixed parts 1,2.
- the front fixed part 1 essentially serves to position and hold in place the end of a tube 4 to be flared, as well as possibly a stepped sleeve 5.
- it constitutes a jaw holder in which can come to take places two jaws 6.
- This jaw 6 has the shape of substantially a parallelepiped, one face 7 of which is inclined.
- the door- jaws has a dovetail shape. The inclined face 7 of each jaw then comes against an inclined face of the jaw holder.
- each jaw 6 in contact with the other jaw has a recess intended to receive the sleeve 5 and the end of the tube 4. On its part intended to receive the tube, this recess is covered with carbide in order to obtain a better coefficient of friction thus better maintaining the end of the tube 4 in position.
- the widest side of the dovetail is on the side of the end of the tube 4 to be flared.
- a tool acts on this end to flare the tube, it pushes the jaws 6 and by wedge effect, these tighten so that they better hold the end of the tube 4.
- the front fixed part 1 is provided with a movable stop 8, articulated around an axis of rotation.
- the stop 8 is placed facing the recess made in the jaws 6 to receive the end of the tube 4. The latter is then slid between the two jaws 6 which are not tightened until to come into abutment against the movable stop 8.
- a pre-tightening device is fitted to the front unit 1 of the machine. It comprises a shoe 9 which, on one side, faces a jaw 6 placed in the jaw holder and, on the other side can be pushed towards this jaw 6 by an eccentric 10 actuated by means of a lever 11.
- the front fixed part 1 described above is connected to the rear fixed part 2 by two parallel columns 12 which serve as a guide in translation to the mobile part 3.
- the mobile part 3 is mounted by means of four bearings 13 on the two columns 12 connecting the front 1 and rear 2 fixed blocks.
- It includes a bolt 14 which constitutes the tool used for flaring the end of the tube 4, a pin 15 in which the bolt 14 is mounted, a pin support 16 and an electric motor 17 driving the spindle support 16 in rotation by means of a belt 18 and a pulley 19 mounted on the output shaft of the motor 17.
- the spindle support 16 is mounted in a housing 20 by means of ball bearings 21.
- the axis of this support 16 is parallel to the columns 12 and therefore to the direction of movement of the movable block 3.
- the spindle support 16 On the side facing the jaw holder, the spindle support 16 has a recess serving as a housing for the spindle 15.
- the latter is mounted by means of a needle bushing 22 and a ball bearing 23 in the recess of the support brooch.
- the axis of the spindle 15 mounted in its support 16 is inclined a few degrees relative to the axis of the spindle support 16.
- the bolt 14 is housed in the spindle 15, parallel to the axis of the spindle 15. It is therefore inclined relative to the axis of the spindle support 16.
- the electric motor 17 is mounted parallel to the axis of the spindle support 16 on the housing 20.
- the belt 18 drives the spindle support 16 in rotation and by virtue of the inclination of the axis of the bolt 14 and its spindle 15, the snap 14 is driven by an orbital movement.
- a cover closes the housing 20, which serves as a support for a hydraulic pump 25.
- the latter comprises a piston 26, an inlet valve 27 and an outlet valve 28.
- the piston 26 is driven in a reciprocating movement by an eccentric 29 mounted on the spindle support 16 opposite the bolt 14 and housed in a recess made in the cover 24.
- the pump 25 is supplied with oil by a flexible pipe 30 connected to an oil reservoir 31. The latter takes place in the rear fixed part 2 of the machine.
- This pump 25 supplies a hydraulic cylinder.
- the body of this jack is integrated into the rear fixed block 2, the chamber of this jack is constituted by a blind bore 32 produced in the rear block 2 and the piston 33 of this jack is secured to the cover 24 of the housing 20.
- the power supply in cylinder oil is made through a channel 34 drilled in the cover 24 and the piston 33 and connecting the outlet of the pump to the cylinder chamber.
- the movable block 3 On the side of the bolt 14, the movable block 3 has two fingers 35 serving as mechanical stops. Each jaw 6 has a milled surface 36 facing a finger 35. This surface 36 is placed so that a finger 35 abuts against it when the flaring of the end of the tube 4 is made.
- the movable block 3 stops, but the motor 17 continues to rotate, driving the pump 25.
- the piston 33 of the jack no longer moving, the pressure in the chamber 32 of the jack increases .
- a pressure switch 37 connected to this chamber 32 registers this increase in pressure.
- the pressure switch 37 controls a solenoid valve 38 which then connects the chamber 32 of the jack with the reservoir 31. The pressure therefore decreases and the movable block 3 is no longer pushed towards the front fixed part.
- springs 39 disposed between the front fixed block 1 and the mobile part 3 surround the two columns 12.
- two spacers 40 disposed around the springs 39 are provided to limit the travel of the movable part.
- the pressure switch 37 can control not only the solenoid valve 38, but also the supply of the motor 17. Thus, when the pressure becomes too high, the motor 17 is stopped.
- FIG. 3 shows in section a valve 41 having functions similar to those of the pressure switch 37 and of the solenoid valve 38.
- This valve 41 is connected by its inlet 42 to the chamber 32 of the jack and by its outlet 47 to the reservoir 31. It comprises a calibrated valve 43 and a drawer 44.
- the calibrated valve 43 opens and puts the cylinder chamber in connection with a chamber 46 located at one end of the drawer 44 The latter is then pushed under the effect of the pressure and slides into a position where the inlet 42 is connected to the outlet 47, that is to say that the chamber 32 of the jack is connected to the reservoir 31.
- a latching system comprising a ball 48, a spring 49 and a notch 50 produced on a rod 51 secured to the drawer 44 is provided.
- FIG. 4 shows a device making it possible to automatically raise the movable stop 8 necessary for positioning the end of the tube 4 when the movable block 3 approaches the fixed front part 1.
- the device comprises a lifting cam 52 mounted on the movable block 3.
- This cam 52 has an inclined surface which cooperates with a lever secured to the movable stop 8, so that when the movable block 3 advances towards the front fixed part 1 , the movable stop 3 deviates from the position where it allows the correct positioning of the end of the tube 4.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
- Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
- Metal Extraction Processes (AREA)
- Control Of Metal Rolling (AREA)
- Forging (AREA)
- Automatic Assembly (AREA)
- Actuator (AREA)
- Jigs For Machine Tools (AREA)
- Control And Other Processes For Unpacking Of Materials (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9501803A FR2730434B1 (fr) | 1995-02-13 | 1995-02-13 | Machine a evaser des extremites de tubes par bouterollage |
FR9501803 | 1995-02-13 | ||
PCT/FR1996/000222 WO1996025253A1 (fr) | 1995-02-13 | 1996-02-12 | Machine a evaser des extremites de tubes par bouterollage |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0809552A1 true EP0809552A1 (fr) | 1997-12-03 |
EP0809552B1 EP0809552B1 (fr) | 1999-12-29 |
Family
ID=9476216
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96903084A Expired - Lifetime EP0809552B1 (fr) | 1995-02-13 | 1996-02-12 | Machine a evaser des extremites de tubes par bouterollage |
Country Status (11)
Country | Link |
---|---|
EP (1) | EP0809552B1 (fr) |
JP (1) | JP3830161B2 (fr) |
AT (1) | ATE188147T1 (fr) |
AU (1) | AU702815B2 (fr) |
DE (1) | DE69605896T2 (fr) |
DK (1) | DK0809552T3 (fr) |
ES (1) | ES2142047T3 (fr) |
FR (1) | FR2730434B1 (fr) |
NO (1) | NO312061B1 (fr) |
NZ (1) | NZ301745A (fr) |
WO (1) | WO1996025253A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110918796A (zh) * | 2019-12-09 | 2020-03-27 | 袁福英 | 一种钢管加工用扩径装置 |
CN113477825A (zh) * | 2021-05-27 | 2021-10-08 | 珠海格力智能装备有限公司 | 加工设备 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5956987A (en) * | 1995-02-13 | 1999-09-28 | Parker Hannifin Rak Sa | Machine for flaring pipe ends |
CN103124603B (zh) * | 2010-08-06 | 2015-04-29 | 美国润滑棒公司 | 手持式扩口工具 |
TW201532699A (zh) | 2013-10-30 | 2015-09-01 | American Grease Stick Co | 手持擴展工具 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3040800A (en) * | 1958-10-16 | 1962-06-26 | Parker Hannifin Corp | Tube flaring tool |
US2924263A (en) * | 1958-12-24 | 1960-02-09 | Kearney James R Corp | Adjustable tube flaring machine and double-pivoted support therefor |
US3610016A (en) * | 1969-08-12 | 1971-10-05 | Tenneco Inc | Unitized tube end forming machine |
FR2660219A1 (fr) * | 1990-03-28 | 1991-10-04 | Parker Hannifin Rak Sa | Machine a bouteroller. |
AU629472B2 (en) * | 1990-06-07 | 1992-10-01 | Mcdermott International, Inc. | Conductor guide forming machine |
-
1995
- 1995-02-13 FR FR9501803A patent/FR2730434B1/fr not_active Expired - Fee Related
-
1996
- 1996-02-12 JP JP52470996A patent/JP3830161B2/ja not_active Expired - Fee Related
- 1996-02-12 NZ NZ301745A patent/NZ301745A/xx unknown
- 1996-02-12 WO PCT/FR1996/000222 patent/WO1996025253A1/fr active IP Right Grant
- 1996-02-12 AU AU47239/96A patent/AU702815B2/en not_active Ceased
- 1996-02-12 DE DE69605896T patent/DE69605896T2/de not_active Expired - Lifetime
- 1996-02-12 EP EP96903084A patent/EP0809552B1/fr not_active Expired - Lifetime
- 1996-02-12 ES ES96903084T patent/ES2142047T3/es not_active Expired - Lifetime
- 1996-02-12 DK DK96903084T patent/DK0809552T3/da active
- 1996-02-12 AT AT96903084T patent/ATE188147T1/de not_active IP Right Cessation
-
1997
- 1997-08-12 NO NO19973700A patent/NO312061B1/no not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO9625253A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110918796A (zh) * | 2019-12-09 | 2020-03-27 | 袁福英 | 一种钢管加工用扩径装置 |
CN113477825A (zh) * | 2021-05-27 | 2021-10-08 | 珠海格力智能装备有限公司 | 加工设备 |
Also Published As
Publication number | Publication date |
---|---|
FR2730434A1 (fr) | 1996-08-14 |
JP3830161B2 (ja) | 2006-10-04 |
ES2142047T3 (es) | 2000-04-01 |
NO973700D0 (no) | 1997-08-12 |
EP0809552B1 (fr) | 1999-12-29 |
AU702815B2 (en) | 1999-03-04 |
AU4723996A (en) | 1996-09-04 |
DE69605896D1 (de) | 2000-02-03 |
NO973700L (no) | 1997-09-30 |
DE69605896T2 (de) | 2000-05-04 |
DK0809552T3 (da) | 2000-05-22 |
WO1996025253A1 (fr) | 1996-08-22 |
NZ301745A (en) | 1999-11-29 |
NO312061B1 (no) | 2002-03-11 |
JPH11500066A (ja) | 1999-01-06 |
FR2730434B1 (fr) | 1997-03-21 |
ATE188147T1 (de) | 2000-01-15 |
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