US3882639A - Jet sand blasting of bent tubes or rods - Google Patents

Jet sand blasting of bent tubes or rods Download PDF

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Publication number
US3882639A
US3882639A US493090A US49309074A US3882639A US 3882639 A US3882639 A US 3882639A US 493090 A US493090 A US 493090A US 49309074 A US49309074 A US 49309074A US 3882639 A US3882639 A US 3882639A
Authority
US
United States
Prior art keywords
tube
blasting
annular duct
rods
leg
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
US493090A
Other languages
English (en)
Inventor
Wilhelm Kollbach
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vodafone GmbH
Original Assignee
Mannesmannroehren Werke AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE19732338994 external-priority patent/DE2338994C3/de
Application filed by Mannesmannroehren Werke AG filed Critical Mannesmannroehren Werke AG
Application granted granted Critical
Publication of US3882639A publication Critical patent/US3882639A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/32—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/08—Abrasive blasting machines or devices; Plants essentially adapted for abrasive blasting of travelling stock or travelling workpieces
    • B24C3/10—Abrasive blasting machines or devices; Plants essentially adapted for abrasive blasting of travelling stock or travelling workpieces for treating external surfaces
    • B24C3/12—Apparatus using nozzles

Definitions

  • the present invention relates to sandblasting of tubes or rods bent in hairpin fashion, i.e., having U-shaped configuration.
  • a blasting chamber with a pivotable annular duct and radially inwardly directed blasting nozzles; roller tracks run the tubes or rods to be sandblasted into the chamber, whereby one leg of such a tube or rod is guided through the annular duct followed by pivoting the latter on a vertical axis for blasting the curved portion of the tube or rod.
  • the other leg of the tube or rod is blasted upon retraction of the tube or rod from the chamber by means of the nozzles of the same annulus.
  • a second annulus with blasting nozzles treated this second leg in parallel with the first one.
  • the guiding of a rod or tube to be sandblasted is preferably carried out by vertically disposed rollers flanking the roller tracks. These guide rollers could engage the bent tube or pipe on the outside as to both legs, but guiding one leg from both sides may also be used.
  • FIG. 1 is a top view of the equipment in accordance with the preferred embodiment of the invention.
  • FIG. 2 shows the pivotal blasting nozzle, on an enlarged scale, being part of the equipment shown in FIG. 1.
  • the illustrated equipment includes a roller track with horizontally arranged reversible rollers l.
  • the drive for these rollers is not illustrated and is conventional.
  • the track is flanked on both sides by vertically arranged rollers 2 for guiding a hairpin bent or U- shaped tube in a particular orientation on the roller track proper.
  • the sandblasting equipment is contained in a casing 3, defining the sandblasting chamber.
  • This chamber has an entrance adjacent the end of the track with rollers l and an exit located opposite the entrance. Entrance and exit of the blasting chamber are sealed to some extent by curtains 4 or the like to prevent escape of sand but permitting passage of the pipe.
  • the casing 3 contains a pivot arm 9 carrying a ring or annular duct 7 with a gap, and nozzles 8 project radially inwardly from duct 7. Respectively, two of the nozzles project in diagonally opposite disposition towards each other. Sand under pressure is fed, for example, through a journalled hollow shaft 11 from a suitable supply and pressure source and passes into the annular duct 7 for distribution to nozzles 8.
  • the pivot arm with annulus 7 and nozzles 8 is pivoted by means of a reversible drive, covering for each pivot motion.
  • the return motion for the pivot arm may not cover the same 180 in reverse motion, but may complete one turn as will be shown shortly.
  • the roller track 1 could also be termed the feeder track for the apparatus and blasting equipment.
  • a second roller track 5 is provided on the other side of the blasting equipment. Adjacent to the exit of the blasting chamber in casing 3, track 5 could also be termed the control track. Lateral guide rollers are also provided here, and a stop 6 is provided at the end of that track 5. Upon engagement of the stop 6 by a tube contacts are actuated to control the roller tracks and other oper ations as will be explained shortly.
  • a bent tube section 10 is placed onto roller track 1 in the illustrated position, i.e., with the legs extending towards the blasting chamber.
  • the guide rollers 2 maintain that orientation.
  • the pivot arm 9 holds the nozzle ring 7 to one side, and as the tube 10 enters the blasting chamber, one leg of the tube traverses the ring and is sandblasted as shown in FIG. 2.
  • the front ends of the two legs of U-shaped tube 10 will be engaged by the rollers 5 of the second track which cause the tube to moved until the front ends of the legs abut stop 6.
  • the stop 6 has disposition so that now the curved portion of tube 10 is situated entirely in the blasting chamber whereby particularly the pivot axis of arm 9 traverses the center of curvature of the bent tube portion at the bottom of the U.
  • the pivot arm 9 may continue its pivot motion to complete a full turn, so as to assume the initial disposition of readiness for the next tube 10 to be sandblasted.
  • the next tube 10 can be treated in the reverse order as to its legs, and the bent or curved portion can be sandblasted on the reverse pivot of annulus 7 on arm 9.
  • a single nozzle ring is used to obtain the blasting treatment in a reversing process as far as the tube movement on the rollers is concerned.
  • a second ring which does not have to be pivotal, for blasting the second leg of the tube, and after the pivoting has been completed for blasting the curved portion, stop 6 is golded away and track 5 continues in the same direction to move the tube out of the blasting chamber and onto further conveying equipment. It can be seen that the gap in the nozzle ring or rings have to be provided for only in this case; an uninterrupted annulus can be used when the tube is reversed as was described first.
  • Apparatus for sandblasting hairpin bent tubes or rods comprising: i
  • first roller track disposed for moving such tubes or 4% v a rods to and into the blasting chamber through the entrance; I y it a second roller track disposed for moving the tubes or rods from the blasting chamber when emerging from the exit;
  • annular duct with radially inwardly directed blasting nozzles disposed in the blasting chamber so that'z I one leg of a bent tube or rod, when moved into the Y i chamber by the first roller track, traverses the-annular duct for sandblasting through jets as ejected 1 from the nozzles; and I I g means for pivotally mounting the annular ductformoving the annularduct with nozzles along the bent axis of the curved portion of the tube or rod for sandblasting the saidcurved portion.
  • annular duct as the other leg passes through the annu- I lar duct during said reversal.
  • roller tracks having lateral guides for providing for guided motion of the. tube throughthe annular duct.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Spray Control Apparatus (AREA)
  • Nozzles (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Coating Apparatus (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Cleaning In General (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Rollers For Roller Conveyors For Transfer (AREA)
US493090A 1973-07-30 1974-07-30 Jet sand blasting of bent tubes or rods Expired - Lifetime US3882639A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732338994 DE2338994C3 (de) 1973-07-30 Vorrichtung zum Schleuderstrahlen von U-förmig gebogenen Rohren

Publications (1)

Publication Number Publication Date
US3882639A true US3882639A (en) 1975-05-13

Family

ID=5888593

Family Applications (1)

Application Number Title Priority Date Filing Date
US493090A Expired - Lifetime US3882639A (en) 1973-07-30 1974-07-30 Jet sand blasting of bent tubes or rods

Country Status (11)

Country Link
US (1) US3882639A (fr)
JP (1) JPS5517630B2 (fr)
AT (1) AT332245B (fr)
BE (1) BE818190A (fr)
BR (1) BR7406216D0 (fr)
CA (1) CA1005643A (fr)
ES (1) ES428725A1 (fr)
FR (1) FR2239318B1 (fr)
GB (1) GB1475385A (fr)
IT (1) IT1017662B (fr)
SU (1) SU663280A3 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5216849A (en) * 1991-05-29 1993-06-08 Navajo Refining Company Apparatus and method for sandblasting pipe
CN102814367A (zh) * 2012-08-21 2012-12-12 中山市奥美森工业技术有限公司 一种主动式接料送料机构
CN103508149A (zh) * 2013-08-29 2014-01-15 青岛昌佳机械有限公司 履带板抛丸机
CN103567886A (zh) * 2013-11-06 2014-02-12 江苏龙城铸造机械科技有限公司 一种型材的横向排列、纵向分步进给上料装置及方法
CN107952616A (zh) * 2018-01-16 2018-04-24 江苏中矿大正表面工程技术有限公司 一种用于大型桥隧钢沉管外表面的涂装设备
US10837648B1 (en) 2017-03-17 2020-11-17 Robert S. Lapeyre Outdoor cooker with improved cooling arrangement
CN113103156A (zh) * 2021-05-06 2021-07-13 章志 一种汽轮机汽缸铸件制造成型加工工艺
CN113560085A (zh) * 2021-09-24 2021-10-29 南通金盛不锈钢有限公司 一种自动化程度高的不锈钢管件加工用防腐蚀漆喷涂机

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117718174B (zh) * 2024-02-18 2024-05-24 江苏三佑管道科技有限公司 一种快速干燥型管材用无死角智能喷涂装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2451635A (en) * 1945-05-05 1948-10-19 Frank A Schratt Apparatus for treating tubular bodies
US3362109A (en) * 1964-10-27 1968-01-09 Ralph O. Wallace Treating apparatus and method
US3628295A (en) * 1969-10-27 1971-12-21 Paulsboro Chemical Ind Inc Manufacture of plastic articles having a mottled surface

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2451635A (en) * 1945-05-05 1948-10-19 Frank A Schratt Apparatus for treating tubular bodies
US3362109A (en) * 1964-10-27 1968-01-09 Ralph O. Wallace Treating apparatus and method
US3628295A (en) * 1969-10-27 1971-12-21 Paulsboro Chemical Ind Inc Manufacture of plastic articles having a mottled surface

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5216849A (en) * 1991-05-29 1993-06-08 Navajo Refining Company Apparatus and method for sandblasting pipe
CN102814367A (zh) * 2012-08-21 2012-12-12 中山市奥美森工业技术有限公司 一种主动式接料送料机构
CN102814367B (zh) * 2012-08-21 2015-04-15 中山市奥美森工业有限公司 一种主动式接料送料机构
CN103508149A (zh) * 2013-08-29 2014-01-15 青岛昌佳机械有限公司 履带板抛丸机
CN103508149B (zh) * 2013-08-29 2015-06-24 青岛昌佳机械有限公司 履带板抛丸机
CN103567886A (zh) * 2013-11-06 2014-02-12 江苏龙城铸造机械科技有限公司 一种型材的横向排列、纵向分步进给上料装置及方法
CN103567886B (zh) * 2013-11-06 2017-01-04 江苏龙城铸造机械科技有限公司 一种型材的横向排列、纵向分步进给上料装置及方法
US10837648B1 (en) 2017-03-17 2020-11-17 Robert S. Lapeyre Outdoor cooker with improved cooling arrangement
CN107952616A (zh) * 2018-01-16 2018-04-24 江苏中矿大正表面工程技术有限公司 一种用于大型桥隧钢沉管外表面的涂装设备
CN113103156A (zh) * 2021-05-06 2021-07-13 章志 一种汽轮机汽缸铸件制造成型加工工艺
CN113560085A (zh) * 2021-09-24 2021-10-29 南通金盛不锈钢有限公司 一种自动化程度高的不锈钢管件加工用防腐蚀漆喷涂机
CN113560085B (zh) * 2021-09-24 2021-11-30 南通金盛不锈钢有限公司 一种自动化程度高的不锈钢管件加工用防腐蚀漆喷涂机

Also Published As

Publication number Publication date
BE818190A (fr) 1974-11-18
DE2338994B2 (de) 1977-01-13
JPS5049722A (fr) 1975-05-02
FR2239318B1 (fr) 1979-05-25
CA1005643A (en) 1977-02-22
ES428725A1 (es) 1976-09-01
ATA564174A (de) 1975-12-15
DE2338994A1 (de) 1975-02-20
AT332245B (de) 1976-09-10
FR2239318A1 (fr) 1975-02-28
BR7406216D0 (pt) 1975-04-22
IT1017662B (it) 1977-08-10
JPS5517630B2 (fr) 1980-05-13
SU663280A3 (ru) 1979-05-15
GB1475385A (en) 1977-06-01

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