WO2008004964A1 - Fixing device - Google Patents

Fixing device Download PDF

Info

Publication number
WO2008004964A1
WO2008004964A1 PCT/SE2007/050441 SE2007050441W WO2008004964A1 WO 2008004964 A1 WO2008004964 A1 WO 2008004964A1 SE 2007050441 W SE2007050441 W SE 2007050441W WO 2008004964 A1 WO2008004964 A1 WO 2008004964A1
Authority
WO
WIPO (PCT)
Prior art keywords
spindle
spindle unit
holder
unit
locking device
Prior art date
Application number
PCT/SE2007/050441
Other languages
French (fr)
Inventor
Björn Lind
Original Assignee
Lind Finance & Development Ab
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
Application filed by Lind Finance & Development Ab filed Critical Lind Finance & Development Ab
Publication of WO2008004964A1 publication Critical patent/WO2008004964A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
    • B05B15/62—Arrangements for supporting spraying apparatus, e.g. suction cups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/0278—Arrangement or mounting of spray heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
    • B05B13/0431—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation with spray heads moved by robots or articulated arms, e.g. for applying liquid or other fluent material to 3D-surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/10—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces

Definitions

  • the present invention relates to a device according to the preamble to Claim 1.
  • spindles driven by air turbines and by electric motors are used for dispersing small droplets, such as for painting, for example within the vehicle industry.
  • a conical cup is used, a so-called bell, that is driven by the spindle.
  • a spindle unit comprising the spindle and bell, is arranged on a spindle holder in such a way that it can be removed, and in turn the spindle holder is, for example, held in the hand of a robot arm, as shown in Figure 1.
  • the spindle unit is attached to the spindle holder by means of screws or the like.
  • the spindle unit For maintenance or in the event of incorrect functioning, the spindle unit must be repaired on site or unscrewed from the spindle holder and replaced by a new spindle unit, which in turn must be screwed onto the spindle holder.
  • a considerable amount of time can be required for servicing or replacement of spindle units. It is therefore desirable to be able to reduce the down time for replacing spindles or for servicing the unit and thereby to make the painting plant more efficient by being able to replace a spindle in the plant in a simple way and to carry out all servicing, inspection and remedial measures without the operation of the painting plant being affected.
  • Figure 1 shows, as mentioned, the spindle unit 2 carried by a robot
  • Figure 2 shows a conventional spindle unit 2 provided with a painting bell 1, but with a fixing device on the spindle holder 6 that eliminates screws;
  • Figure 3 shows a side view, partially sectioned, of a device comprised in the invention
  • Figure 4 shows the device according to Figure 3 viewed in a cross section according to the arrows in Figure 3.
  • the device for attaching the spindle unit 2 to a spindle holder 6 consists of a bayonet ring 4, which in principle is constructed of a cylindrical ring 11 , the edges of which are provided with lugs 10, 15 that face radially inwards.
  • the spindle unit 2 and the spindle holder 6 have machined grooves (not shown) on each side of the interface 12 created when the spindle unit is mounted on the spindle holder.
  • the distance between the grooves is to correspond to the distance between the lugs 10 and 15 that are located axially on each side of the ring 11. That is to say, when the spindle unit 2 is mounted, the lugs 10 of the ring 11 are engaged in the respective grooves in the spindle holder 6.
  • the spindle holder 6 has openings that separate the groove axially from the interface, which openings are three in number in the example shown and have a peripheral extent that corresponds to the peripheral length of the respective lug 10.
  • the bayonet ring 4 with its lug 15 is arranged in the machined groove in the spindle unit in such a way that it can be rotated, which groove is created by a retaining device in the form, for example, of a disc being mounted on the spindle unit after the bayonet ring 4 with its flange 15 has been placed in the position in which it can be rotated on the spindle unit.
  • the spindle 2 with its mounted bayonet ring 4 is moved towards the spindle holder 6, after which the bayonet ring 4 is rotated so that the respective lug 10 is rotated into the groove in the spindle holder 6 and thereby locks the spindle unit axially in relation to the spindle holder 6.
  • the spindle has air bearings, with bearing air being brought under pressure through a pipe 9.
  • the bearing air is then taken to the spindle shaft by a pipe 3.
  • a plunger 8 is arranged between the pipe 9 and the pipe 3, that has a plunger face 13 facing towards the spindle unit 2.
  • the plunger face 13 will press against a suitable face (not shown) on the spindle unit 2, whereby the bayonet ring 4 will be automatically locked in its "bayonet fixing" position in such a way that it cannot rotate and the spindle unit 2 is thereby fixed in relation to the spindle holder 6.
  • Suitable seals are arranged in order to prevent leakage of bearing air when pressure is applied, for example a seal 5 between the bearing air pipe 3 and the plunger 8, and also plunger seals 7.
  • the spindle unit is arranged on the spindle holder by the spindle unit being centred radially and oriented for rotation by guides before the bayonet ring is rotated in order to limit the axial movement of the spindle.

Landscapes

  • Spray Control Apparatus (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Nozzles (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)

Abstract

Device with a spindle unit (2) for dispersal of droplets, such as for painting, by means of a bell for dispersing the droplets arranged so that it can rotate on a shaft mounted in a spindle unit, which spindle unit is mounted on a spindle holder (6) in such a way that it can be removed. The device is characterized in that the spindle unit (2) is mounted on the spindle holder by means of a locking device (4) in such a way that it can be removed, and in that the spindle unit is fixed in relation to the spindle holder by means of a force acting between the spindle unit and the spindle holder.

Description

FIXING DEVICE
The present invention relates to a device according to the preamble to Claim 1.
Spindles driven by air turbines and by electric motors are used for dispersing small droplets, such as for painting, for example within the vehicle industry. In order to disperse the droplets, a conical cup is used, a so-called bell, that is driven by the spindle. A spindle unit, comprising the spindle and bell, is arranged on a spindle holder in such a way that it can be removed, and in turn the spindle holder is, for example, held in the hand of a robot arm, as shown in Figure 1. The spindle unit is attached to the spindle holder by means of screws or the like. For maintenance or in the event of incorrect functioning, the spindle unit must be repaired on site or unscrewed from the spindle holder and replaced by a new spindle unit, which in turn must be screwed onto the spindle holder. In plants with a large number of spindle units, it is of course the case that a considerable amount of time can be required for servicing or replacement of spindle units. It is therefore desirable to be able to reduce the down time for replacing spindles or for servicing the unit and thereby to make the painting plant more efficient by being able to replace a spindle in the plant in a simple way and to carry out all servicing, inspection and remedial measures without the operation of the painting plant being affected.
By means of the present invention, which eliminates the use of screws for attaching the spindle unit to the spindle holder, the time required to replace a spindle is considerably reduced. This is possible as a result of the characteristics of the invention that are described in the claims.
The invention will be described in greater detail with reference to the drawings, in which Figure 1 shows, as mentioned, the spindle unit 2 carried by a robot; Figure 2 shows a conventional spindle unit 2 provided with a painting bell 1, but with a fixing device on the spindle holder 6 that eliminates screws;
Figure 3 shows a side view, partially sectioned, of a device comprised in the invention; and Figure 4 shows the device according to Figure 3 viewed in a cross section according to the arrows in Figure 3. The device for attaching the spindle unit 2 to a spindle holder 6 consists of a bayonet ring 4, which in principle is constructed of a cylindrical ring 11 , the edges of which are provided with lugs 10, 15 that face radially inwards. The spindle unit 2 and the spindle holder 6 have machined grooves (not shown) on each side of the interface 12 created when the spindle unit is mounted on the spindle holder. The distance between the grooves is to correspond to the distance between the lugs 10 and 15 that are located axially on each side of the ring 11. That is to say, when the spindle unit 2 is mounted, the lugs 10 of the ring 11 are engaged in the respective grooves in the spindle holder 6. The spindle holder 6 has openings that separate the groove axially from the interface, which openings are three in number in the example shown and have a peripheral extent that corresponds to the peripheral length of the respective lug 10. In the example shown, the bayonet ring 4 with its lug 15 is arranged in the machined groove in the spindle unit in such a way that it can be rotated, which groove is created by a retaining device in the form, for example, of a disc being mounted on the spindle unit after the bayonet ring 4 with its flange 15 has been placed in the position in which it can be rotated on the spindle unit.
The spindle 2 with its mounted bayonet ring 4 is moved towards the spindle holder 6, after which the bayonet ring 4 is rotated so that the respective lug 10 is rotated into the groove in the spindle holder 6 and thereby locks the spindle unit axially in relation to the spindle holder 6.
In the example shown, the spindle has air bearings, with bearing air being brought under pressure through a pipe 9. The bearing air is then taken to the spindle shaft by a pipe 3. A plunger 8 is arranged between the pipe 9 and the pipe 3, that has a plunger face 13 facing towards the spindle unit 2. As a result of the pressurized bearing air acting upon a surface 14 opposite the plunger face 13, when the spindle unit is operating, the plunger face 13 will press against a suitable face (not shown) on the spindle unit 2, whereby the bayonet ring 4 will be automatically locked in its "bayonet fixing" position in such a way that it cannot rotate and the spindle unit 2 is thereby fixed in relation to the spindle holder 6. During replacement of a spindle unit 2, when its function has been completely disconnected, there is no force acting upon the plunger 8 and the bayonet ring 4 can be easily rotated so that the lugs 10 coincide with the openings in the groove in the spindle holder 6.
Suitable seals are arranged in order to prevent leakage of bearing air when pressure is applied, for example a seal 5 between the bearing air pipe 3 and the plunger 8, and also plunger seals 7.
The spindle unit is arranged on the spindle holder by the spindle unit being centred radially and oriented for rotation by guides before the bayonet ring is rotated in order to limit the axial movement of the spindle.
Although the description above is concerned with a painting spindle, the invention can, of course, be used within all fields where a corresponding or similar spindle unit is used.

Claims

Claims
1. Device with a spindle unit (2) for dispersal of droplets, such as for painting, by means of a bell for dispersing the droplets arranged so that it can rotate on a shaft mounted in a spindle unit, which spindle unit is mounted on a spindle holder (6) in such a way that it can be removed, characterized in that the spindle unit (2) is mounted on the spindle holder by means of a locking device (4) in such a way that it can be removed, and in that the spindle unit is fixed in relation to the spindle holder by means of a force acting between the spindle unit and the spindle holder, which force is achieved by a pressurized fluid.
2. Device according to Claim 1, characterized in that the pressurized fluid consists of the same fluid that is used for the bearings of the shaft mounted in the spindle unit.
3. Device according to Claim 1 or 2, characterized in that the locking device (4) is designed in such a way that it joins the spindle unit (2) and the spindle holder (6) by means of a bayonet fixing and absorbs the force between these that is created by the pressurized fluid.
4. Device according to Claim 3, characterized in that the locking device is in the form of a rotating ring (4), the edges of which engage in corresponding openings in the spindle unit (2) and/or the spindle holder (6), a so-called bayonet locking function.
5. Device according to Claim 3 or 4, characterized in that the locking device (4) surrounds the spindle unit (2) and the spindle holder (6) in the plane of their interface.
6. Device according to any one of Claims 3-5, characterized in that the locking device (4) is provided with lugs (10, 15) that face radially inwards, which lugs can be inserted axially into peripheral openings in the spindle unit (2) and/or the spindle holder (6), which openings end in grooves that extend peripherally and that receive the lugs (10, 15) after the locking device has been rotated.
7. Device according to any one of Claims 2-6, characterized in that the pressurized fluid acts on a plunger (8) arranged in the spindle holder, which plunger presses against the spindle unit (2) as a result of the pressure of the fluid, thereby holding the locking device (4) in the locked position.
8. Device according to any one of Claims 2-7, characterized in that the rotating shaft has gas bearings and the bearing fluid is air.
PCT/SE2007/050441 2006-07-03 2007-06-20 Fixing device WO2008004964A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0601447-6 2006-07-03
SE0601447A SE530106C2 (en) 2006-07-03 2006-07-03 Attachment to a spindle assembly

Publications (1)

Publication Number Publication Date
WO2008004964A1 true WO2008004964A1 (en) 2008-01-10

Family

ID=38894836

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2007/050441 WO2008004964A1 (en) 2006-07-03 2007-06-20 Fixing device

Country Status (2)

Country Link
SE (1) SE530106C2 (en)
WO (1) WO2008004964A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103623962A (en) * 2012-08-22 2014-03-12 Snu精密股份有限公司 Spraying nozzle unit

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1156470A (en) * 1967-03-08 1969-06-25 Technoimpex Magynar Gepipari K Electrostatic Liquid Spraying Apparatus
DE3632005A1 (en) * 1986-09-20 1988-04-07 Steinhaus Gmbh Fan nozzle
EP0642842A2 (en) * 1993-09-13 1995-03-15 Illinois Tool Works Inc. Nozzle assembly
EP1114677A1 (en) * 1999-07-13 2001-07-11 Abb K.K. Automatic painting device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1156470A (en) * 1967-03-08 1969-06-25 Technoimpex Magynar Gepipari K Electrostatic Liquid Spraying Apparatus
DE3632005A1 (en) * 1986-09-20 1988-04-07 Steinhaus Gmbh Fan nozzle
EP0642842A2 (en) * 1993-09-13 1995-03-15 Illinois Tool Works Inc. Nozzle assembly
EP1114677A1 (en) * 1999-07-13 2001-07-11 Abb K.K. Automatic painting device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103623962A (en) * 2012-08-22 2014-03-12 Snu精密股份有限公司 Spraying nozzle unit
CN103623962B (en) * 2012-08-22 2016-03-02 Snu精密股份有限公司 Spray nozzle unit

Also Published As

Publication number Publication date
SE530106C2 (en) 2008-03-04
SE0601447L (en) 2008-01-04

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