EP1440766B1 - Appareil pour le nettoyage et le détartrage de la surface extérieure de pièces longues - Google Patents

Appareil pour le nettoyage et le détartrage de la surface extérieure de pièces longues Download PDF

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Publication number
EP1440766B1
EP1440766B1 EP03425023A EP03425023A EP1440766B1 EP 1440766 B1 EP1440766 B1 EP 1440766B1 EP 03425023 A EP03425023 A EP 03425023A EP 03425023 A EP03425023 A EP 03425023A EP 1440766 B1 EP1440766 B1 EP 1440766B1
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EP
European Patent Office
Prior art keywords
cleaning
descaling
housing
roller
belt
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.)
Expired - Lifetime
Application number
EP03425023A
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German (de)
English (en)
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EP1440766A1 (fr
Inventor
Nicholas Franklin
James M. Knott, Jr.
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Rtt Srl
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Rtt Srl
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Publication date
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Priority to EP03425023A priority Critical patent/EP1440766B1/fr
Priority to DE60319498T priority patent/DE60319498T2/de
Priority to AT03425023T priority patent/ATE387986T1/de
Publication of EP1440766A1 publication Critical patent/EP1440766A1/fr
Application granted granted Critical
Publication of EP1440766B1 publication Critical patent/EP1440766B1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/02—Machines or devices using grinding or polishing belts; Accessories therefor for grinding rotationally symmetrical surfaces
    • B24B21/025—Machines or devices using grinding or polishing belts; Accessories therefor for grinding rotationally symmetrical surfaces for travelling elongated stock, e.g. wire

Definitions

  • the present invention relates to an apparatus for abrasively cleaning and descaling the surface of elongated objects such as metallic rod, pipe and especially continuous strands of wire.
  • US-A-5,613,900 discloses such an apparatus for cleaning the outer surface of an elongate member which includes an abrasive sanding belt rotated about two rollers, and orbited about the elongate member.
  • Said two rollers are secured for rotation to a rotatable drive casing mounted in a stationary housing.
  • One of the rollers is a drive roller, the other one is an idler roller rotationally supported by an eccentric rod.
  • Said eccentric rod includes both a roller portion and a mounting portion which are axially offset from each other.
  • the mounting portion of the eccentric rod is held for rotation within the drive casing by a pair of spherical bearings held in bearing mounts.
  • the apparatus includes a sanding belt engagement and disengagement mechanism and a belt tensioning mechanism.
  • the belt engagement and disengagement mechanism comprises a linkage mechanism, connected to the mounting portion of the eccentric rod, and a handle affixed to the drive casing.
  • Movement of the handle by an operator allows rotation of the mounting portion in two directions. Rotation in one direction moves the roller portion toward the drive roller to a belt release position and rotation in the opposite direction moves the idler roller to a belt engagement position. In the first position the belt may be removed or replaced and in the second position the idler roller applies the necessary tension to the belt.
  • a spring is connected between the end of the mounting portion of the eccentric rod to retain the linkage assembly and therefore the idler roller in one of the two positions.
  • the belt tensioning mechanism is connected by a second handle to said bearing mount of the eccentric rod to provide a fine adjustment to the tension of the belt.
  • Such a bearing mount includes an eccentric mount and is mounted for rotation within said drive casing.
  • the known apparatus provides a clamping assembly to secure the second handle and, therefore, the bearing mount of the eccentric rod in desired position so that the desired tension of the abrasive belt is maintained.
  • the tension in the abrasive belt is fixed, and is generated by the rotation of the bearing mount of the eccentric rod, and to a lesser degree by the spring in the belt engagement and disengagement mechanism.
  • US-A-3 559 348 discloses an abrading machine which consists of an abrasive belt bearing against and being drawn across the side of a travelling strand, wire, rod or pipe and rotating about it.
  • the belt drive and idler rollers, or carriers, are provided with aligning adjustments, and the latter additionally has a tensioning spring arrangement and is compensated for centrifugal force.
  • An object of the present invention is to provide an apparatus capable of applying to the abrasive belt a correct pre-tension as well as of adjusting continuously the tension during the operation of the apparatus, thus improving the belt tensioning and releasing mechanism.
  • an apparatus for cleaning and descaling an elongate member comprising an orbital drive housing, a drive roller and an adjusting roller both mounted apart from one another and in parallel on said orbital drive housing, a support for said elongate member passing through it, an abrasive belt mounted on said two rollers and in contact with said elongate member, a motor rotating said orbital drive housing, a drive rotating said drive roller as the orbital drive housing is rotated about said elongate member, a belt release system and a belt tensioning assembly associated with said adjustable roller to provide setting of the belt pre-tension, characterized in that said adjustable roller is mounted free to move outward from the centre of rotation of the orbital drive housing beyond the pre-tension setting due to the centrifugal forces generated by the rotation of said orbital drive housing, whereby the tension of the belt increases as the rotational speed of the orbital drive housing increases.
  • adjustable roller tensioning assembly and said belt release system are one and the same mechanism.
  • the apparatus comprises an offset plate having a pivoting shaft and a first and a second end, said pivoting shaft being mounted on a bearing of said orbital drive housing, said adjustable roller being mounted free to rotate around a support shaft at said first end of said off-set plate and said second end being associated to said tensioning assembly.
  • the apparatus is characterized in that said tensioning assembly comprises a tensioning eccentric rotating about a centre, a threaded rod connected to said off-set plate and to said tensioning eccentric and a compression spring mounted around said threaded rod.
  • said tensioning eccentric rotates around said centre and is mounted on a tensioning pivot shaft mounted in bushings in the orbital drive housing.
  • said threaded rod has a line of action beyond said centre of said tensioning eccentric.
  • said compression spring is positioned around the said extended threaded rod between a lower spring washer and an upper spring washer, said compression spring and said spring washers being held in place by an adjusting nut and a locking nut.
  • the apparatus comprises means for regulating the pre-tension level of the abrasive belt by regulating the pre-tension level of the compression spring by rotating said adjusting nut about the said threaded rod.
  • the apparatus comprises a belt tracking mechanism.
  • said tracking mechanism modifies the angular relationship of the adjustable roller with respect the drive roller.
  • a cleaning and descaling apparatus 10 is shown and generally includes a machine housing 11, containing an orbital drive housing 12 and its constituent components.
  • the orbital drive housing 12 has mounted onto it an adjustable roller tensioning assembly 15, an adjustable roller tracking assembly 16, a drive roller assembly 31, and an elongate support member assembly 29, all of them comprising the main features of the preferred embodiment of the invention, and which will be further described in detail below.
  • the orbital drive housing 12 and the drive roller assembly 31 and their constituent components are not described being already known.
  • such an apparatus contains an internal orbital drive system, comprising a center stationary gear and a planetary gear, said planetary gear being mechanically affixed to the drive roller.
  • An external drive rotates the orbital drive housing 12 to which two rollers 13, 14 are mounted.
  • center stationary gear and the planetary drive gear are operatively connected.
  • the said internal gear drive rotates one of the rollers when the orbital drive housing is rotated.
  • the mentioned external drive comprises a motor 18 provided for operating various components within the machine housing 11.
  • Motor 18 is operatively connected to the orbital drive housing 12 by means of a drive belt 25.
  • Motor 18 is mounted on an adjustable motor base 19, which is fastened to a horizontal surface 21 which comprises an integral part of the machine housing 11.
  • the adjustable motor base 19 is attached to the housing surface 21 by means of fasteners 20.
  • the adjustable motor base 19 has adjusting screws 22 and locking nuts 23 by which means the location of motor 18 is adjusted, thereby adjusting the tension in the drive belt 25.
  • Motor 18 has mounted upon it a drive pulley 24, and a brake disk 26 is attached to the drive pulley by fasteners 27.
  • a brake caliper 28 acts upon the brake disk 26 to brake the motor 18 and the orbital drive housing 12 and its constituent components during operation, and to prevent rotation during maintenance of the apparatus 10.
  • the drive belt 25 is generally of the toothed type, and the motor drive pulley 24 and the outer circumference of the orbital drive housing 12 are formed to match the tooth profile of the drive belt 25.
  • the orbital drive housing 12 is rigidly attached to the machine housing 11.
  • a wire or other elongate member 125 passes through the machine housing 11 and the orbital drive housing 12 and along the elongate support member 29.
  • the elongate support member assembly 29 is supported at its extended end by an elongate support member bearing assembly 30, which is rigidly attached to the machine housing 11.
  • the adjustable roller tensioning assembly 15 has an adjustable roller 14 associated to it, and the drive roller assembly 31 has a drive roller 13 attached to it.
  • the drive roller assembly 13 is connected to an internal drive mechanism not shown in the drawings.
  • An endless abrasive belt 17 is mounted between the belt rollers 13 and 14 and is tensioned by means of the adjustable roller tensioning assembly 15.
  • the abrasive belt 17 passes over the wire or elongate member 125 which is supported by the elongate support member 29, and during operation abrades the surface of said wire or elongate member 125.
  • the adjustable roller tensioning assembly 15 is shown in cross-section.
  • the adjustable roller 14 is mounted onto, and free to rotate about, a support shaft 34 by means of bearings 35 and 36.
  • the outermost bearing 36 is fastened to the support shaft 34 by means of a cylindrical washer 38 and a fastener 39.
  • the innermost bearing 35 is retained inside the adjustable roller 14 by means of a retaining ring 37.
  • the adjustable roller 14 is held captive between the bearings 35 and 36 by internal shoulders to prevent lateral movement.
  • the support shaft 34 is rigidly attached to a first end of an offset plate 32, to which the pivoting shaft 33 is also rigidly attached, forming an assembly in which the respective shafts have differing but parallel centerline axes.
  • the pivoting shaft 33 is mounted in a spherical bearing 42.
  • the spherical bearing 42 is mounted in a front mounting plate 40, which is attached to the orbital drive housing 12 by means of fasteners 41.
  • the spherical bearing 42 is retained in the front mounting plate 40 by means of a retaining ring 43.
  • the pivoting shaft 33 is attached to the spherical bearing 42 by means of a nut 46, which is held in place by a locking washer 45.
  • a cylindrical washer 44 acts as a spacer between the locking washer 45 and nut 46, and the spherical bearing 42.
  • the other end of the pivoting shaft 33 is held within a hollow sleeve shaft 47, which is further described below.
  • the adjustable roller tensioning assembly 15 includes an eccentric assembly 49, a threaded rod 55 and a compression spring 56 as explained herebelow.
  • the second extended end of the offset plate 32 is attached to the tensioning eccentric assembly 49, which is mounted on a tensioning pivot shaft 50 by means of fasteners 53.
  • the tensioning pivot shaft 50 is mounted in a pair of bronze bushings 51, which are mounted in the orbital drive housing 12.
  • a locking collar 48 and locking screw 52 attach the locking collar 48 to the tensioning pivot shaft 50 to retain it to the orbital drive housing 12.
  • the adjustable roller tensioning mechanism 15 is shown in a partial sectional end view.
  • the belt rollers 13 and 14 are shown, with the abrasive belt 17 stretched between them.
  • the wire or other elongate member 125 is shown supported by the elongate member support bar 69.
  • a multiple of carbide slider plates 70 are clamped to the elongate member support bar 69 by means of multiple slider retaining plates 71 which are attached to the elongate member support bar by fasteners 72.
  • the slider retaining plates 71 are heat-treated to prevent premature wear by exposure to the abrasive particles from the abrasive belt 17.
  • the front mounting plate 40 is mounted to the orbital drive housing 12 by means of fasteners 41.
  • the adjustable roller 14 is mounted in such a way that, when viewed from the end of the adjustable roller 14, the centre of the adjustable roller 14 is off-centre with respect to the centre of the pivoting shaft 33.
  • the offset plate 32 which forms part of the pivoting shaft 33 and support shaft 34 is attached at its outermost second end to the tensioning eccentric 54 which is part of the tensioning assembly 49.
  • the tensioning eccentric 54 rotates about the centre 74 of the tensioning pivot shaft 50.
  • a freely rotating stub shaft 61 is mounted into the tensioning eccentric 54, and a threaded rod 55 extends through a hole in the stub shaft 61.
  • a clevis 66 is attached and held in place by means of a locking nut 67.
  • an adjusting nut 64 and a locking nut 65 are connected between the stub shaft 61 and the clevis 66. Rotation of this adjusting nut 64, thereby moving it upwardly or downwardly along the threaded rod 55, will change the limit of motion of the adjustable roller.
  • the adjusting nut 64 will also act as a stop against the compression spring 56 when the tensioning eccentric 54 is rotated for belt dis-engagement, as described further below.
  • the second extended end of the offset plate 32 has a spherical bearing 76 mounted in it and held in place by means of a retaining ring 77.
  • a pin 68 passes through the clevis 66 and spherical bearing 76, and is held captive by means of retaining rings 75 on both ends.
  • the extended end of the threaded rod 55 has mounted on it a lower spring washer 60, the compression spring 56, and an upper spring washer 59.
  • the tension eccentric 54 comprises a first flat portion and a second curvilinear portion for supporting the lower spring washer 60 in the two configurations shown according to Fig. 3 A and Fig. 3 and determined by the rotation of the tension eccentric 54 about the centre 74.
  • the compression spring 56 and washers 59 and 60 are held in place by means of an adjusting nut 57 and a locking nut 58. Since the line of action of the threaded rod 55 is beyond the centre 74 of the pivoting shaft 50, the compression spring 56 acts to apply tension to the abrasive belt 17 when in the engaged position as shown in Fig. 3 .
  • the tensioning eccentric 54 is restrained from further rotation once the threaded rod 55 is in contact with a shoulder within the tensioning eccentric 54. Rotation of the adjusting nut 57, moving it upwardly or downwardly along the threaded rod 55, will respectively decrease or increase the amount of pre-tension in the compression spring 56, and therefore the amount of pre-tension imparted into the abrasive belt 17.
  • the tensioning eccentric 54 has a hole 62 drilled in it, to receive a handle 63.
  • the abrasive belt 17 has a pre-tension generated in it by the compression spring 56, the belt tension will be higher at operational speeds.
  • the orbital drive housing 12 and its constituent components rotate at speed, generating centrifugal forces in the orbital drive housing 12 and all of its components.
  • the adjustable roller 14 is free to move outward from the rotational centre of the orbital drive housing 12, limited in travel only by the adjusting nut 64.
  • the adjusting nut 64 is adjusted in such a way that during normal operation of the apparatus 10 the nut does not contact the stub shaft 61, thereby restricting acceptable outward movement of the adjustable roller 14.
  • the adjusting roller 14 will therefore impart an increased force against the abrasive belt 17 as it tries to move outward from the rotational centre.
  • This increased tension is counter-balanced by the opposing centrifugal force acting upon the drive roller 13, and the increased forces result in a higher tension in the abrasive belt 17.
  • the wire or elongate member 125 travelling through the apparatus 10 will increase in linear speed proportionate to the rotational speed of the orbital drive housing 12, and this will consequently increase the lateral frictional force imparted into the abrasive belt 17.
  • the abrasive belt 17 will consistently track on the rollers 13 and 14, and will be restricted in said tendency to move laterally along the rollers 13 and 14 at high operational speeds.
  • the belt tracking mechanism 16 is shown from the rear of the orbital drive housing 12 in a partial section view.
  • the adjustable roller 14, the drive roller 13, and the abrasive belt 17 are also depicted from the rear of the orbital drive housing 12.
  • a rear mounting plate 78 is attached to the orbital drive housing 12 by means of fasteners 79.
  • a cover plate 80 is attached to the rear mounting plate 78 by means of fasteners 81.
  • a threaded adjusting screw 83 is located in a stepped hole through the rear mounting plate 78.
  • the threaded adjusting screw 83 has an integral rectangular head 84 to permit adjustment by means of a wrench, and a bronze washer 85 is installed between the rectangular head 84 and the rear mounting plate 78.
  • a bronze washer 89 and a locking nut 88 are placed on the lower end of the adjusting screw 83 .
  • a rectangular-head nut 86 At the extended end of the threaded adjusting screw 83 is a rectangular-head nut 86, held captive on the threaded adjusting screw by means of a locking nut 87.
  • the threaded adjusting screw 83 is threaded through a freely rotating pivot pin 82.
  • the pivot pin 82 is inserted into a hole in the sleeve shaft 47.
  • the hole 91 in the sleeve shaft 47 for the threaded adjusting screw 83 is oversized, as further described below.
  • the belt tracking mechanism 16 is shown in cross-sectional view.
  • the sleeve shaft 47 has a flat surface 90 machined on either side to fit the rectangular slot 92 machined into the rear mounting plate 78.
  • the oversize hole 91 in the end of the sleeve shaft 47 allows for a small amount of angular movement of the threaded adjusting screw 83.
  • the pivoting shaft 33 is inserted into a hole in the end of the sleeve shaft 47. Clearance is provided by the rectangular slot 92 in the rear mounting plate 78 for angular adjustment of the sleeve shaft 47 and pivoting shaft 33.
  • Rotation of the threaded adjusting screw 83 will move the pivot pin 82 upwardly or downwardly along the threaded adjusting screw, thereby changing the angle of the sleeve shaft 47, the pivoting shaft 33, and by extension the angle of the adjustable roller 14.
  • the elongate support member bearing assembly 30 is shown in a partial sectional view. Adjustment of the support bearing housing 98 is permitted in two planes.
  • the support bearing housing is mounted onto a lower adjustable plate 104 by means of fasteners 100 and washers 101.
  • the support bearing housing has slotted holes 99 to permit side to side adjustment.
  • Two adjuster plates 108 are mounted on either side of the lower adjustable plate 104 by means of fasteners 109. Adjusting screws 110 are threaded into the adjuster plates 108 and locked in place by lock nuts 111.
  • the lower adjusting plate 104 is mounted to a lower support block 114 by means of fasteners 106 and washers 107, passing through slotted holes 105 to permit vertical adjustment. Adjusting screws 116 are threaded into the bottom of the lower support block and locked in place by locking nuts 117.
  • FIG. 7 a section through the elongate support member bearing assembly 30 is shown.
  • the lower support block 114 is rigidly attached to the machine housing 11 by means of fasteners 115.
  • the support bearing housing 98 is guided by a slot formed by the lower adjustable plate 104 and a retainer plate 112, mounted to the lower adjustable plate 104 by means of fasteners 113.
  • the centre of the support bearing housing 98 and bearing 121 is aligned with the centre of the orbital drive housing 12 by means of the adjustments as described above.
  • the elongate member support bar 69 is attached to an adapter plate 93 by means of fasteners 94.
  • the adapter plate 93 is heat treated to prevent undue wear from rubbing by the abrasive belt 17.
  • a carbide slider plate 70 is clamped to the elongate member support bar 69 by means of slider retaining plates 71 which are attached to the elongate member support bar by fasteners 72.
  • the wire or elongate member 125 is supported by the carbide slider plate 70, and passes through a cylindrical carbide bushing 118 which further guides the wire 125 as it passes through the centre hole 97 in the support shaft 96.
  • the adapter plate 93 is attached to a support shaft 96 by means of fasteners 95.
  • the support shaft is mounted in the support bearing housing 98 by means of a bearing 121.
  • a hardened spacer ring 102 is installed on the inboard side of the bearing 121, and a hardened spacer ring 103 is installed on the outboard side.
  • the spacer rings 102 and 103, and the bearing 121 are retained on the support shaft 96 by means of a nut 123 and locking washer 122.
  • Two cylindrical grease seals 119 and 120 are installed in the support bearing housing 98, and re-lubrication is provided by means of the grease nipple 124.
  • the abrasive sanding belt 17 may be mounted onto the rollers 13 and 14 by inserting the handle 63 into the adjustable roller tensioning mechanism 15 and rotating the eccentric housing 54 into the disengaged position as shown in Fig. 3A .
  • the eccentric housing 54 may be rotated back into the operating position as shown in Fig. 3 in order to induce pre-tension in the abrasive belt 17.
  • Adjustment of the pre-tension in the abrasive belt 17 may be made by adjusting the tensioning nut 57, and locking said nut 57 by means of the lock nut 58 when the desired tension has been reached.
  • the handle 63 is removed from the apparatus 10 for the duration of the sanding and descaling operation.
  • the sanding and descaling operation of the apparatus 10 is similar to those previously described in earlier patents for such apparatuses.
  • the tension in the abrasive belt 17 increases in proportion to the rotational speed of the orbital housing. The increase in abrasive belt tension will compensate for the increased drag created by the wire or other elongate member 125 being abraded by the abrasive belt 17.
  • Adjustment of the threaded adjusting screw 83 will alter the angular relationship of the rollers 13 and 14, and cause the abrasive belt to shift laterally along the axes of the rollers 13 and 14.
  • the threaded adjusting screw 83 may be locked into position by means of the locking nut 88.
  • the new apparatus uses a roller 14 mounted on a shaft having an eccentric pivot 33, with an over-centre linkage 54 used to apply a pre-tension to the abrasive belt, and which also allows the roller 14 to freely move outward beyond the pre-tension setting.
  • the belt pre-tension is adjustable by means of a nut 57 and screw 55, with a lock nut 58 used to retain the setting.
  • a handle 63 is inserted into the over-centre linkage 54 to apply or release the belt pre-tension, and this handle is removed during machine operation. When the orbital housing 12 begins rotating, the centrifugal force from the tensioning roller is used to increase the abrasive belt tension.
  • the centrifugal force acting on the eccentrically mounted adjustable roller 14 also balances the centrifugal force acting on the drive roller 13, equalizing the forces and allowing higher rotational speeds avoiding that the centrifugal forces exert dangerous bending moments on the rollers and roller shafts.
  • the abrasive belt effectively becomes a tension member, transferring forces between the two rollers. This also increases the belt force imparted onto the wire during operation, resulting in better abrading at high speed.
  • the tracking mechanism is used to further compensate for this lateral force, by adjusting the divergence of the roller ends, and making them more or less out-of-parallel to help overcome any remaining tendency of the belt to move laterally.
  • the elongate support bearing assembly further assists in compensating for the tendency of the abrasive belt to move laterally.
  • the elongate support being eccentric to the center of rotation of the orbital housing, and being subject to the tension forces in the abrasive belt and imparted into the wire or elongate member, will want to deflect when said orbital housing is in rotation. This deflection is prevented by the addition of the elongate support member bearing assembly, which will negate the bending forces as described above.
  • This elongate support bearing assembly contributes to the ability of the apparatus to operate at higher rotational speeds, and therefore permits the wire or elongate member to pass through the apparatus at higher lateral speeds.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Processes Specially Adapted For Manufacturing Cables (AREA)

Claims (22)

  1. Appareil (10) pour nettoyer et décalaminer un élément allongé (125), ledit appareil comprenant :
    a) un carter d'entraînement orbital (12),
    b) un galet d'entraînement (13) et un galet ajustable (14), dans lequel ledit galet d'entraînement (13) et ledit galet ajustable (14) sont montés à l'écart l'un de l'autre et en parallèle sur ledit carter d'entraînement orbital (12),
    c) un élément de support (29) pour supporter ledit élément allongé (125) passant à travers celui-ci,
    d) une courroie abrasive (17) montée sur lesdits deux galets (13, 14) et en contact avec ledit élément allongé (125),
    e) un moteur (18) faisant tourner ledit carter d'entraînement orbital (12), un entraînement faisant tourner ledit galet d'entraînement (13) lorsque le carter d'entraînement orbital (12) tourne autour dudit élément allongé (125),
    f) un système de libération de courroie et un ensemble tendeur (15) associés audit galet ajustable (14) pour régler la prétension de la courroie,
    caractérisé en ce qu'il comprend en outre:
    g) un arbre pivotant (33) relié de sorte à pouvoir tourner audit carter d'entraînement (12), et
    h) une plaque décalée (32) qui peut tourner sur un centre dudit arbre pivotant (33), ledit arbre pivotant (33) étant fixé solidement à ladite plaque décalée (32), dans lequel ladite plaque décalée (32) a une première extrémité et une seconde extrémité, dans lequel un arbre de support (34) sur lequel ledit galet ajustable (14) peut être monté de sorte à tourner librement, est solidement fixé à ladite première extrémité de la plaque décalée (32), et en outre dans lequel ledit ensemble (15) est associé à ladite seconde extrémité de la plaque décalée (32) de sorte que ledit galet ajustable (14) se déplace vers l'extérieur depuis le centre de rotation du carter d'entraînement orbital (12) au-delà du réglage de prétension en raison des forces centrifuges générées par la rotation du carter d'entraînement orbital (12), moyennant quoi la tension de la courroie (17) augmente au fur et à mesure que la vitesse de rotation du carter d'entraînement orbital (12) augmente.
  2. Appareil (10) de nettoyage et décalaminage selon la revendication 1, caractérisé en ce que ledit ensemble tendeur (15) et ledit système de libération de courroie sont un et un même mécanisme.
  3. Appareil (10) de nettoyage et décalaminage selon la revendication 1, caractérisé en ce que ledit ensemble tendeur (15) comprend un excentrique de tension (54) tournant autour d'un centre (74), une tige filetée (55) reliée à ladite plaque décalée (32) et audit excentrique de tension (54), un ressort de compression (56) monté autour de ladite tige filetée (55).
  4. Appareil (10) de nettoyage et décalaminage selon la revendication 3, caractérisé en ce que ledit excentrique de tension (54) tourne autour d'un centre (74) d'un arbre pivot tendeur (50) et est monté dans des bagues (52) du carter d'entraînement orbital (12).
  5. Appareil (10) de nettoyage et décalaminage selon la revendication 3 ou 4, caractérisé en ce que ladite tige filetée (55) a une ligne d'action au-delà dudit centre (74) de l'excentrique de tension (54).
  6. Appareil (10) de nettoyage et décalaminage selon l'une quelconque des revendications 3 à 5, caractérisé en ce que ledit excentrique de tension (54) est doté d'un arbre tournant librement (61) et ladite tige filetée (55) s'étend à travers un trou dans ledit arbre de liaison (61).
  7. Appareil (10) de nettoyage et décalaminage selon l'une quelconque des revendications 3 à 6, caractérisé en ce que l'extrémité inférieure de ladite tige filetée (55) est reliée à une chape (66) et la seconde extrémité de ladite plaque décalée (32) présente un palier (76), un axe (68) passant à travers ladite chape (66) et ledit palier (76).
  8. Appareil (10) de nettoyage et décalaminage selon l'une quelconque des revendications 4 à 7, caractérisé en ce que ledit ressort de compression (56) est positionné autour de ladite tige filetée allongée (55) entre une rondelle à ressort inférieure (60) et une rondelle à ressort supérieure (59), ledit ressort de compression (56) et lesdites rondelles à ressort (59, 60) étant maintenus en place par un écrou de réglage (57) et un écrou de blocage (58).
  9. Appareil (10) de nettoyage et décalaminage selon la revendication 8, caractérisé en ce qu'il comprend des moyens pour régler le niveau de prétension de la courroie abrasive (17) en réglant le niveau de prétention du ressort de compression (56) en faisant tourner ledit écrou de réglage (57) autour de ladite tige filetée (55).
  10. Appareil (10) de nettoyage et décalaminage selon la revendication 7, caractérisé en ce qu'il comprend des moyens pour régler la limite de mouvement du galet ajustable (14), lesdits moyens comprenant un écrou de réglage (64) et un écrou de blocage (65) entre ledit arbre de liaison (61) et ladite chape (66), moyennant quoi ladite limite est réglée en faisant tourner ledit écrou (64) autour de ladite tige filetée (55).
  11. Appareil (10 de nettoyage et décalaminage selon l'une quelconque des revendications 4 à 10, caractérisé en ce qu'il comprend des moyens (62, 63) pour faire tourner l'excentrique de tension (54) dans une première direction afin de prétendre la courroie abrasive (17) et dans une seconde direction pour dégager la courroie abrasive (17).
  12. Appareil (10) de nettoyage et décalaminage selon la revendication 11, caractérisé en ce que lesdits moyens de rotation comprennent un trou (62) percé dans ledit excentrique de tension (54) et une poignée (63) insérable dans ledit trou (62).
  13. Appareil (10) de nettoyage et décalaminage selon l'une quelconque des revendications 1 à 12, caractérisé en ce qu'il comprend un mécanisme de guidage de courroie (16).
  14. Appareil (10) de nettoyage et décalaminage selon la revendication 13, caractérisé en ce que ledit mécanisme de guidage (16) modifie la relation angulaire du galet ajustable (14) par rapport au galet d'entraînement (13).
  15. Appareil (10) de nettoyage et décalaminage selon la revendication 13 ou 14, caractérisé en ce qu'il comprend en outre un arbre de manchon creux (47) dans lequel est inséré ledit arbre pivotant (33) de ladite plaque (32), et des moyens (83, 82) pour modifier en parallèle l'angle dudit arbre de manchon (47) dudit arbre pivotant (33) et dudit galet d'ajustement (14).
  16. Appareil (10) de nettoyage et décalaminage selon la revendication 15, caractérisé en ce que lesdits moyens comprennent en outre une vis de réglage filetée (83) et un axe d'articulation tournant librement (82) inséré dans un trou (91) dudit arbre de manchon (47), moyennant quoi la rotation de ladite vis de réglage filetée (83) déplace ledit axe d'articulation (82) le long de la vis de réglage filetée, modifiant l'angle dudit galet d'ajustement (14).
  17. Appareil de nettoyage et décalaminage (10) selon la revendication 16, caractérisé en ce que ladite vis de réglage filetée (83) est située dans un trou d'une plaque de montage (78) d'un carter d'entraînement orbital (12).
  18. Appareil de nettoyage et décalaminage (10) selon la revendication 16 ou 17, caractérisé en ce qu'il comprend en outre un écrou de blocage (88) pour bloquer en position ladite vis de réglage filetée (83).
  19. Appareil de nettoyage et décalaminage (10) selon la revendication 1, caractérisé en ce qu'il comprend en outre un carter d'entraînement orbital (12) fixé à un carter de machine (11) auquel est attaché un ensemble de palier d'élément de support allongé (30) supportant une barre de support d'élément allongé (69), ledit élément allongé (125) passant à travers ledit carter de machine (11) et ledit carter d'entraînement orbital (12), et le long de ladite barre de support d'élément allongé (69).
  20. Appareil de nettoyage et décalaminage (10) selon la revendication 19, caractérisé en ce que ledit ensemble de palier d'élément de support allongé (30) comprend un carter de palier de support (98) monté sur une plaque d'ajustement inférieure (104) qui est montée sur un bloc de support inférieur (114) associé audit carter de machine (11), des moyens (110, 116) étant prévus pour permettre un ajustement côte à côté sensiblement horizontal du carter de palier de support (98) par rapport à ladite plaque d'ajustement inférieure (104) et un ajustement sensiblement vertical du carter de palier de support (98) par rapport audit bloc de support inférieur (114).
  21. Appareil de nettoyage et décalaminage (10) selon la revendication 19 ou 20, caractérisé en ce qu'un arbre de support (96) est monté sur ledit carter de palier de support (98) au moyen d'un palier (121) situé dans ledit carter (98), ledit élément allongé (125) passant à travers le trou central (97) dans ledit arbre de support (96).
  22. Appareil de nettoyage et de décalaminage (10) selon la revendication 20 ou 20 ou 21, caractérisé en ce que ledit carter de palier de support (98) comprend une plaque coulissante au carbure (70) et une bague au carbure cylindrique (118), ledit élément allongé (125) étant supporté par ladite plaque coulissante au carbure (70) et passant à travers ladite bague au carbure cylindrique (118).
EP03425023A 2003-01-21 2003-01-21 Appareil pour le nettoyage et le détartrage de la surface extérieure de pièces longues Expired - Lifetime EP1440766B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP03425023A EP1440766B1 (fr) 2003-01-21 2003-01-21 Appareil pour le nettoyage et le détartrage de la surface extérieure de pièces longues
DE60319498T DE60319498T2 (de) 2003-01-21 2003-01-21 Vorrichtung zum Reinigen und Entkrusten der Aussenfläche von länglichen Werkstücken
AT03425023T ATE387986T1 (de) 2003-01-21 2003-01-21 Vorrichtung zum reinigen und entkrusten der aussenfläche von länglichen werkstücken

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03425023A EP1440766B1 (fr) 2003-01-21 2003-01-21 Appareil pour le nettoyage et le détartrage de la surface extérieure de pièces longues

Publications (2)

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EP1440766A1 EP1440766A1 (fr) 2004-07-28
EP1440766B1 true EP1440766B1 (fr) 2008-03-05

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EP03425023A Expired - Lifetime EP1440766B1 (fr) 2003-01-21 2003-01-21 Appareil pour le nettoyage et le détartrage de la surface extérieure de pièces longues

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EP (1) EP1440766B1 (fr)
AT (1) ATE387986T1 (fr)
DE (1) DE60319498T2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201700035270A1 (it) * 2017-03-30 2018-09-30 Colleoni S R L Dispositivo di tensionamento per levigatrici da banco a nastro abrasivo e relativa levigatrice a nastro
GB201721786D0 (en) * 2017-12-22 2018-02-07 Agco Corp Easy adjust tensioner assembly
US11009105B2 (en) 2018-01-02 2021-05-18 Agco Corporation Easy adjust tensioner assembly
CN110405589A (zh) * 2019-08-30 2019-11-05 明珠家具股份有限公司 一种防止砂带脱落的海绵轮砂带机
CN111589214B (zh) * 2020-05-14 2022-04-29 郑州沃特节能科技股份有限公司 一种用于钢渣处理的过滤网带装置
CN114227473B (zh) * 2021-12-28 2024-05-14 唐山曹妃甸工业区长白机电设备检修有限公司 一种冷轧薄壁钢套筒对接焊缝精加工装置
CN118404456B (zh) * 2024-07-04 2024-09-20 锐尔科技徐州有限公司 一种异形弯管抛光用抛光机

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3559348A (en) * 1968-05-21 1971-02-02 Anchor Post Prod Abrading machine
DE1752658A1 (de) * 1968-06-29 1970-01-29 Kieserling & Albrecht Vorrichtung zum Schleifen zylindrischer Werkstuecke
US5613900A (en) * 1995-06-27 1997-03-25 L&P Property Management Company Cleaning and descaling apparatus

Also Published As

Publication number Publication date
DE60319498T2 (de) 2009-03-26
ATE387986T1 (de) 2008-03-15
DE60319498D1 (de) 2008-04-17
EP1440766A1 (fr) 2004-07-28

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