CN103620112A - Device and method for conditioning the flow surface of the headbox of a fiber web machine - Google Patents
Device and method for conditioning the flow surface of the headbox of a fiber web machine Download PDFInfo
- Publication number
- CN103620112A CN103620112A CN201280030304.1A CN201280030304A CN103620112A CN 103620112 A CN103620112 A CN 103620112A CN 201280030304 A CN201280030304 A CN 201280030304A CN 103620112 A CN103620112 A CN 103620112A
- Authority
- CN
- China
- Prior art keywords
- flow surface
- trim elements
- head box
- aulaeum
- instrument
- Prior art date
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Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F1/00—Wet end of machines for making continuous webs of paper
- D21F1/02—Head boxes of Fourdrinier machines
- D21F1/028—Details of the nozzle section
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F1/00—Wet end of machines for making continuous webs of paper
- D21F1/02—Head boxes of Fourdrinier machines
-
- 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
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F7/00—Other details of machines for making continuous webs of paper
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention relates to a device for the conditioning of the flow surface in the headbox of a fiber web machine. The device comprises a frame structure (23) and a conditioning element (24) arranged in the frame structure (23) for the conditioning of the flow surface (25) of the slice channel (11) of a headbox. The height dimension s of the conditioning element (24) is equal to or less than 60 mm. An actuator (26) is also arranged in the frame structure (23) for operating the conditioning element (24). The conditioning element (24) is a grinding disc (36). The invention also relates to a method for the conditioning of the flow surface in the headbox of a fiber web machine.
Description
Technical field
The present invention relates to a kind ofly for repairing the device of flow surface of the head box of fiber web machine, wherein this device comprises:
-frame structure,
-trim elements, is arranged in frame structure, and for repairing the flow surface of the weir plate passage of head box, wherein the height dimension s of trim elements is equal to or less than 60mm, and
-actuator, is arranged in frame structure, for making trim elements running.
The invention still further relates to a kind of for repairing the method for flow surface of the head box of fiber web machine.
Background technology
In fiber web machine (as paper machine), head box has key effect in continuous web forms.In head box, also by turbulent flow generator, in fibrous suspension, form strong turbulent flow.In head box, vortex generator below following weir plate passage, this weir plate passage is limited by aulaeum and top weir plate.The size of weir plate passage, and shape especially, determine that fibrous suspension is discharged into the uniformity coefficient on forming net.In addition, aulaeum forms flow surface, and this flow surface is manufactured smoothly as much as possible, and is often polished.In other words, in fact, its target is accurate flatness and little surface roughness, to generate the smooth discharge from head box.Yet aulaeum and top weir plate wear and tear during operation.In addition, occasioned inhomogeneous thermal expansion and distortion cause the change of the flatness of aulaeum, and this hinders web to form.
Usual practice is to measure, thereby determines the condition of head box and especially aulaeum.A kind of measurement mechanism of prior art proposes in No. 7335280 United States Patent (USP).Wherein, measurement is based on for measure the survey tool of many points simultaneously, and this has significantly accelerated surveying work.Weir plate passage is opened during measuring.In other words, top weir plate often by turn over, survey tool can be placed on flow surface.Survey tool is for determining the condition at the flow surface of single measurement.This is measured rapidly, and the precision of result is excellent.In addition, result can be processed and present in general mode.Based on these results, can make the decision about the finishing measure of needs.
Finishing measure comprises the grinding of (at least as last measure) flow surface, and also comprises under many circumstances the polishing of flow surface.Grinding is carried out by hand-operated tools, and this hand-operated tools moves on flow surface.The common instrument of selecting is the angle grinding machine that is equipped with emery wheel and sand paper.Yet the instrument of the prior art and the pattern of operation comprise the shortcoming that some are actual.First, keep hand-operated tools very burdensome, if especially head box is in upright position, flow surface at an angle in this case.More significant problem is, the weir plate passage of modern head box is limited.In fact, top weir plate is like this littlely mobile, makes for high-power hand-operated tools, not fit in the space on flow surface.This need to remove whole aulaeum and grind, and this has extended safeguards shut-down.The power of the angle grinding machine of prior art is approximately 1000W.In addition, may be damaged when aulaeum is mounted go back to its position.The power of the angle grinding machine of prior art is also not enough so that enough large emery wheel rotations.Little emery wheel can not meet the demand of flatness.There is identical problem in resinder.
Summary of the invention
The object of this invention is to provide a kind ofly for repairing the new device of flow surface of the head box of fiber web machine, wherein this device is more general, and more easily uses than the device of prior art.Another object of the present invention is to provide a kind of for repairing the novel method of flow surface of the head box of fiber web machine, and wherein the method is also suitable for limited weir plate passage.According to the characteristic feature of device of the present invention, be, trim elements is abrasive disk.Similarly, the characteristic feature of the method according to this invention is, trim elements is abrasive disk.According to apparatus and method of the present invention, even can be used in the most limited head box of finishing, and do not remove aulaeum.In addition, no matter how the position of flow surface can both carry out this work comfily, and finishing can be by using enough large trim elements to carry out, and can not run under powered problem.According to apparatus and method of the present invention, especially can be used in the flow surface that finishing is formed by the aulaeum of the weir plate passage of head box.Finishing mainly refers to grinding at this, but trim elements also can be used in friction or polishing.During grinding, from flow surface, remove material, make flow surface again to become smooth.The method can also adopt servicing unit, and this servicing unit reduces the needs that grind, and therefore shortens to produce and stop work.
Accompanying drawing explanation
Below, the accompanying drawing that shows some embodiments of the present invention by reference is described the present invention in detail, in the accompanying drawings:
Fig. 1 illustrates the sectional view of a part of the head box of fiber web machine;
Fig. 2 a illustrates the side view according to device of the present invention;
Fig. 2 b illustrates the top view of the device of Fig. 2 a;
Fig. 3 a illustrates the side view of modification of the device of Fig. 2 a;
Fig. 3 b illustrates the top view of the device of Fig. 3 a;
Fig. 4 a illustrates the side view of another modification of the device of Fig. 2 a;
Fig. 4 b illustrates according to the side view of the Another Application of device of the present invention;
Fig. 4 c illustrates the top view of the device of Fig. 4 b;
Fig. 4 d illustrates according to the top view of the 3rd application of device of the present invention;
Fig. 5 illustrates the application of the method according to this invention;
Fig. 6 illustrates the cutaway view according to trim elements of the present invention;
Fig. 7 is illustrated according to the side view of the servicing unit using in finishing of the present invention;
Fig. 8 illustrates the front view of the servicing unit of Fig. 7.
The specific embodiment
Fig. 1 illustrates a part for the conventional headbox of fiber web machine.Fiber web machine for example comprises paper machine, board machine and Paper pulp machine.As is well known, the fibrous suspension using in production process is supplied in weir plate passage 11 by turbulent flow generator 10.The object of turbulent flow generator is that fiber is separated from one another, and in uncertain mode relative to each other, guides these fibers as far as possible.At this, turbulent flow generator 10 consists of a plurality of pipes 12, and these pipe two end supports are to firm plate 13 and 14.Machining hole 15 on the plate of restriction weir plate passage 11, and described pipe 12 has been placed in hole 15.In Fig. 1, on top of each other, there are 7 line pipes 12, and each row extends through the width of whole head box.Pipe 12 is relative to each other placed at a certain angle, makes to get together slice opening 17 from the fluid of the tube drainage of different rows.Yet, the flowing of Fig. 1 not shown fibrous suspension or its.After turbulent flow generator 10, weir plate passage 11 comprises turbulent flow plate 16, and above-mentioned turbulent flow plate is maintained to slice opening 17 until the turbulent flow level of the expectation of wet end.Fibrous suspension is discharged into the forming net 21 being supported by roller 20 from slice opening 17 at this, is transported forward afterwards by forming net.
The end of weir plate passage 11 has outstanding aulaeum 18, and aulaeum forms smooth flow surface 25.Aulaeum is a part for head box, and aulaeum remains on its position when using head box.Alternatively, top weir plate 19 is connected to the head box with abutment, makes top weir plate upwards to turn over to safeguard.Its abutment 22 is shown in Figure 1.In addition, top weir plate has the adjuster axle of arranging at certain intervals, to adjust the profile (adjuster axle is not shown) of slice opening.When safeguarding head box, and especially when finishing is during flow surface, the structure after head box is removed, and top weir plate is transferred to maintenance position.Like this, aulaeum can enter across its whole width.
The present invention relates to a kind of for repairing the device of flow surface of the head box of fiber web machine.An application example of this device has been shown in Fig. 2 a and Fig. 2 b.This device comprises frame structure 23 and trim elements 24, and this trim elements is arranged in frame structure, to repair the flow surface 25 of the weir plate passage 11 of head box.In addition, this device comprises actuator 26, this actuator arrangement in frame structure 23 so that trim elements 24 running.The height dimension s of trim elements 24 is equal to or less than 60mm.Like this, this device can be removed aulaeum and repair even the most limited head box.At this, height dimension refers to the full-size of the trim elements of measuring along the normal direction of flow surface.According to the present invention, trim elements 24 is abrasive disks 36, by this abrasive disk 36, can make flow surface smooth.
In application example, actuator 26 is arranged away from trim elements 24.In other words, the rotating shaft 27 in actuator 26 is arranged in the side of the rotating shaft 28 in trim elements 24.Like this, because actuator remains on outside weir plate passage, so actuator can be higher than trim elements.The leading edge 29 of aulaeum is shown with chain-dotted line in Fig. 2 b.In identical application, actuator 26 is connected to trim elements 24 by driving element 30, and driving element 30 provides power transmission ratio.At this, driving element is to fill cogged V-belt 31, and corresponding belt wheel 32 and 33 is arranged in trim elements 24 and actuator 26.Due to this transmission power ratio, the rotating speed of high torque actuators can fully raise.V-belt or light, quiet and use safety.As V-strapped, substitute, some other known drive method, as gear or chain drive also can be used.
In the application shown in Fig. 2 a and Fig. 2 b, trim elements is arranged as separated with actuator.At this, trim elements 24 comprises body member 34, and abrasive disk 36 is supported to body member 34 by double-row bearing 35, and abrasive disk 36 can be rotated.And the rotating shaft of abrasive disk 36 is arranged essentially parallel to the normal of flow surface 25.What propose is simple in structure but very firm, because can use large diameter bearing.Meanwhile, can use the common actuator that belt wheel 33 is only installed.At this, actuator 26 is air impeller motors 37 of the good moment of torsion of output.Due to gearratio, the rotating speed of the turbine motor of quiet and high moment of torsion can improve, and therefore significantly improves nonferromagnetic substance.Therefore preferably, the belt wheel 32 of trim elements is integrated in abrasive disk 36, at bearing 35(Fig. 6) the trim elements on side in only have two parts.Body member can be manufactured by for example aluminium, and abrasive disk can be manufactured by stainless steel.
The device proposing also has another new and unexpected attribute.First, frame structure 23 comprises loading arm 38, and it is for passing through from weir plate passage 11(Fig. 3 a and Fig. 3 b) drive and support and loading tool 45.Relatively long loading arm 38 is attached to body member 34, and loading arm 38 can be rotated.In addition, loading arm is equipped with the roller bearing 39 along all direction rotations, and when this device running, this roller bearing 39 contacts with the top weir plate of head box.Loading arm extends slice opening, and trim elements can be loaded against flow surface by extruding loading arm.Like this, as shown in Figure 5, even if flow surface tilts, also easily against flow surface extruding trim elements.Loading can also be used on the flow surface of level, in this case, can hand not filled in and in weir plate passage, carry out operation.This improves ergonomics and improves employment security simultaneously.
Secondly, this device is provided with support wheel.Frame structure 23 comprises support wheel 40 and/or 41, to support these devices against flow surface 25 and/or against the edge 29 of flow surface 25.The first support wheel 40 is positioned at the front portion of this device, and when being supported by this support wheel, this device can insert slice opening and not damage slice opening.In other words, front support wheel 40 is placed on aulaeum lightly, and this device hangs this device and is pushed into slice opening by actuator.The support wheel at rear portion is horizontal, and it can be contacted with the leading edge of flow surface.Like this, the weight of this device can be supported on support wheel, and operator only needs to hang this device very littlely.Support wheel also helps device and moves forward and backward along the side direction of head box.Meanwhile, trim elements will always remain on appropriate location, and without any need for special finishing.And support wheel prevents that actuator from impacting the leading edge of aulaeum.
In proposed application, various parts are secured to one another by screw rod 42.Like this, the structure of this device can change, and for example, V-belt can be adjusted to suitable tightness.At this, near front support wheel 40, there is pouring weight 43, and pouring weight 43 is for this device of balance.Like this, trim elements is as far as possible flatly loaded, and operator does not need to hang it.If need, can remove support wheel and pouring weight.Being applied in shown in Fig. 4 a like this.If needed, rear support wheel also can be removed or on turn over, if therefore there is enough spaces, for actuator, enter weir plate passage, this device also can be used in and repairs flow surface and more go deep into weir plate passage.Space problem can solve by rotational actuator 26 and by actuator 26 being fastened to the side of body member 34, as shown in Fig. 4 b and Fig. 4 c.This has been avoided V-strapped use, and this device is compact.The actuator of standard still can use, but to itself and being connected of body member making some changes.Fig. 4 c illustrates support handle 44, and this support handle is arranged on the opposite side of body member 34.This can move by two hands this device.And, if needed, can use two actuators.In the 3rd application, actuator 26 is integrated in body member, in this case, uses two support handle 44(Fig. 4 d).In proposed application, the about 200mm of the diameter of abrasive disk, this is enough to repair flow surface conventionally.Generally speaking, trim elements 24 is abrasive disks 36, and the diameter of abrasive disk 36 is at least equal to or greater than the size of the flow surface 25 being trimmed along machine direction.This has been avoided trim elements along the unnecessary movement of machine direction, so focus may be mainly along in transverse shifting trim elements.At this, machine direction refers to the depth direction of head box.Meanwhile, can avoid the bias that caused by incorrect location, so flow surface can accurately be made smooth.Correspondingly, the about 45mm of the height dimension of the trim elements in application example.
Fig. 5 illustrates the application of the method according to this invention.The method is intended to repair the flow surface in the head box of fiber web machine.In Fig. 5, roller is removed, and slice opening is opened, and the side plate of head box is removed.This allows flow surface to be trimmed on its whole width.In the method, flow surface 25 is trimmed by instrument 45, and the trim elements 24 that instrument 45 comprises is placed in the weir plate passage 11 of head box, in the region being trimmed at flow surface 25.This region need not be removed as the aulaeum 18 of a part for head box and be trimmed.In addition, the method adopts instrument 45, and wherein the height dimension s of the trim elements 24 of instrument 45 is equal to or less than 60mm(Fig. 2 a).According to the present invention, trim elements 24 is abrasive disks 36, and this abrasive disk moves along the width of head box.By using abrasive disk, finishing is efficiently, and flow surface can accurately be made smooth.Instrument 45 is preferably supported against the edge 29 of flow surface 25.In Fig. 5, head box is in upright position, and in this case, flow surface is also angled.Support wheel makes this device remain on correct position, and operator does not need to hang this device.Example in Fig. 5 also illustrates loading arm, by obtain support from weir plate passage, by this loading arm, carrys out loading tool.The roller bearing of this loading arm is obtained support from top weir plate, so trim elements can be loaded against flow surface by downward extrusion arm.
The needs of finishing and the position that need to repair can determine by above-mentioned measurement mechanism.In practice, measure cost approximately 15 minutes.Owing to measuring fast, the flatness of aulaeum can also again be measured after finishing.In practice, grind leading edge from aulaeum (that is, before) and start, after this, grind out smooth flow surface.In other words, flow surface is repaired by grinding, and therefore from flow surface, removes material, and therefore flow surface is made smooth.
Apparatus and method according to the present invention can be used in the flow surface of easily repairing flat limited head box.Can be when head box be attached to the structure of fiber web machine according to apparatus and method of the present invention, or use when head box is removed from fiber web machine.In addition, this device is suitable for the head box of level and the head box of inclination.At this, fiber web machine refers to paper machine, board machine and toilet paper machine and pulp dryer.
Fig. 7 illustrates a kind of new servicing unit 46 using in finishing.At this, servicing unit 46 is almost completely pushed in weir plate passage 11, and servicing unit 46 is especially intended to crooked aulaeum 18, is mainly to make its aligning.Aligning can be used in the needs that reduce finishing, because also often utilize according to device grinding aulaeum of the present invention after aligning.Weir plate lip guiding fibrous suspension in the weir plate of top is concentrated the tip that flows to aulaeum, and this especially causes the wearing and tearing of the leading edge of aulaeum.Yet servicing unit can be used in rapidly and accurately aligns now.Local deflection also can be repaired.
Servicing unit comprises buckstay 47, and in the time of in being placed on weir plate passage, this buckstay is supported against aulaeum and top weir plate.After this, when obtaining support from this beam, aulaeum can be loaded from weir plate passage outside.In other words, aulaeum can upwards be loaded, so flow surface can be aligned, and further polishing to become smooth.Generally speaking, the aulaeum 18(of head box has the aulaeum that comprises flow surface 25) before grinding by assist 46, aligned.By this way, aligning can accurately complete and needn't impact aulaeum by sledgehammer.This has also improved professional security and ergonomics.
Aulaeum is by hydraulic cylinder 50 bendings, and this hydraulic cylinder is supported on L shaped support member 51.This support member is preferably removable, makes different support members can be attached to beam, and servicing unit is easily transported.At this, beam 47 has protuberance 52, and this protuberance contacts with support member 51.By this way, protuberance 52 bearing loads, make it possible to use thin bolt 53.
In Fig. 7, top weir plate 19 is opened at maintenance position, and removes weir plate lip.In this case, the height of weir plate passage 11 is approximately 60mm.At production period, the height of slice opening is only 5 to 10mm conventionally.Fig. 7 also illustrates dial indicator 55, and the surveyingpin 56 of dial indicator is against flow surface 25.Dial indicator can be used in determines crooked amount, and the elastic recovery of aulaeum also can be considered.The most advanced and sophisticated thickness of aulaeum is less than 10 millimeters, and therefore even small cylinder also can be aligned this aulaeum.Fig. 7 illustrates oil circuit 57 and manual pump 58 substantially, and they form functional jack.Two hydraulic cylinders of pump blocked operation, and for this reason, in oil circuit, there is distributing valve.In practice, beam first by jack-up to contact with weir plate passage, aulaeum is bent afterwards.
Between bending sequence, the on-load pressure of hydraulic cylinder is removed, and servicing unit is transported to the next position.Roller bearing and other rolling elements can be attached to foot and the hydraulic cylinder of beam.In this case, servicing unit can be along the transverse shifting of head box, and aulaeum therefore can be crooked in the mode of similar calendering (mangling).The pressure of expectation is set in hydraulic cylinder, and this device is for example by pulling and shift by coaster.Calendering can complete stage by stage by frequently increasing on-load pressure.By this way, this device is repeatedly transferred to opposite side from a side of head box.Servicing unit can easily transport, and functional jack is accelerated dressing process.
Claims (15)
1. for repairing the device of flow surface for the head box of fiber web machine, wherein this device comprises:
-frame structure (23),
-trim elements (24), is arranged in described frame structure (23), and for repairing the flow surface (25) of the weir plate passage (11) of head box, the height dimension s of wherein said trim elements (24) is equal to or less than 60mm, and
-actuator (26), is arranged in described frame structure (23), for making described trim elements (24) running,
It is characterized in that, described trim elements (24) is abrasive disk (36).
2. device according to claim 1, is characterized in that, the rotating shaft (27) in described actuator (26) is arranged in the side of the rotating shaft (28) in described trim elements (24).
3. device according to claim 1 and 2, is characterized in that, described actuator (26) is connected to described trim elements (24) by driving element (30), and described driving element provides power transmission ratio.
4. according to the device described in any one in claim 1 to 3, it is characterized in that, the diameter of described abrasive disk (36) is at least equal to or greater than along described machine direction the size of the described flow surface (25) being trimmed.
5. according to the device described in any one in claim 1 to 4, it is characterized in that, described trim elements (24) comprises body member (24), and described abrasive disk (36) is supported to described body member by bearing (35), and described abrasive disk (36) can be rotated.
6. according to the device described in any one in claim 1 to 5, it is characterized in that, the rotating shaft of described abrasive disk (36) is arranged essentially parallel to the normal of described flow surface (25).
7. according to the device described in any one in claim 1 to 6, it is characterized in that, described actuator (26) is air impeller motor (37).
8. according to the device described in any one in claim 1 to 7, it is characterized in that, described frame structure (23) comprises loading arm (38), and it is for supporting loading tool (45) by obtaining from described weir plate passage (11).
9. according to the device described in any one in claim 1 to 8, it is characterized in that, described frame structure (23) comprises support wheel (40,41), to support described device against described flow surface (25) and/or against the edge (29) of described flow surface (25).
10. one kind for repairing the method for flow surface of the head box of fiber web machine, in the method, described flow surface (25) is trimmed by instrument (45), the trim elements (24) that wherein said instrument (45) comprises is placed in the weir plate passage (11) of described head box, at described flow surface (25) by the region being trimmed, the finishing in this region need not be removed the aulaeum (18) that described head box comprises, and the method adopts instrument (45), the height dimension s of the trim elements (24) of wherein said instrument (45) is equal to or less than 60mm, and this instrument (45) moves along the width of described head box, it is characterized in that, abrasive disk (36) is used as described trim elements (24).
11. methods according to claim 10, is characterized in that, described instrument (45) is supported against the edge (29) of described flow surface (25).
12. according to the method described in claim 10 or 11, it is characterized in that, described instrument (45) is loaded by obtaining from described weir plate passage (11) to support.
13. according to the method described in any one in claim 10 to 12, it is characterized in that, the described instrument (45) using is in the method according to the device described in any one in claim 2 to 9.
14. according to the method described in any one in claim 10 to 13, it is characterized in that, described flow surface (25) passes through cutting down.
15. the method according to described in any one in claim 10 to 14, is characterized in that, the aulaeum of described head box (18) was aligned before grinding by assist (46), and described aulaeum (18) comprises described flow surface (25).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI20115655A FI127036B (en) | 2011-06-23 | 2011-06-23 | APPARATUS AND METHOD FOR RESTORING THE FLOW SURFACE OF A FIBER MACHINE MACHINE |
| FI20115655 | 2011-06-23 | ||
| PCT/FI2012/050625 WO2012175801A1 (en) | 2011-06-23 | 2012-06-18 | Device and method for conditioning the flow surface of the headbox of a fiber web machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103620112A true CN103620112A (en) | 2014-03-05 |
| CN103620112B CN103620112B (en) | 2016-11-09 |
Family
ID=44206864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280030304.1A Expired - Fee Related CN103620112B (en) | 2011-06-23 | 2012-06-18 | For repairing the apparatus and method of the flow surface of the head box of fiber web machine |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN103620112B (en) |
| DE (1) | DE112012002566T5 (en) |
| FI (1) | FI127036B (en) |
| WO (1) | WO2012175801A1 (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4290867A (en) * | 1980-06-30 | 1981-09-22 | Jumer John F | Means for and method of producing smooth electro-polished surfaces |
| FI84087B (en) * | 1990-04-20 | 1991-06-28 | Valmet Paper Machinery Inc | Arrangement for repair of pointed edge in the headbox of a paper machine and set-up method |
| US5567273A (en) * | 1994-04-22 | 1996-10-22 | Fletcher Challenge Canada Limited | Method of reducing surface irregularities in paper machine headbox components |
| US5928067A (en) * | 1997-10-14 | 1999-07-27 | Beloit Technologies, Inc. | Headbox apron finishing and lapping device |
| EP1510780A2 (en) * | 2003-08-26 | 2005-03-02 | Metso Paper Inc. | Method and equipment for measuring the flatness of the flow surface of the headbox of a paper machine |
| CN101468446A (en) * | 2007-12-26 | 2009-07-01 | 株式会社牧田 | Power tool |
| DE102008059247A1 (en) * | 2008-11-20 | 2010-05-27 | Metabowerke Gmbh | Electric motor-driven angle grinder, has angle transmission arrangement with one section formed as crown wheel, supporting section, and thread section for clamping unit utilized for fixing grinding tool to tool spindle |
-
2011
- 2011-06-23 FI FI20115655A patent/FI127036B/en not_active IP Right Cessation
-
2012
- 2012-06-18 WO PCT/FI2012/050625 patent/WO2012175801A1/en active Application Filing
- 2012-06-18 DE DE112012002566.0T patent/DE112012002566T5/en not_active Withdrawn
- 2012-06-18 CN CN201280030304.1A patent/CN103620112B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4290867A (en) * | 1980-06-30 | 1981-09-22 | Jumer John F | Means for and method of producing smooth electro-polished surfaces |
| FI84087B (en) * | 1990-04-20 | 1991-06-28 | Valmet Paper Machinery Inc | Arrangement for repair of pointed edge in the headbox of a paper machine and set-up method |
| US5567273A (en) * | 1994-04-22 | 1996-10-22 | Fletcher Challenge Canada Limited | Method of reducing surface irregularities in paper machine headbox components |
| US5928067A (en) * | 1997-10-14 | 1999-07-27 | Beloit Technologies, Inc. | Headbox apron finishing and lapping device |
| EP1510780A2 (en) * | 2003-08-26 | 2005-03-02 | Metso Paper Inc. | Method and equipment for measuring the flatness of the flow surface of the headbox of a paper machine |
| CN101468446A (en) * | 2007-12-26 | 2009-07-01 | 株式会社牧田 | Power tool |
| DE102008059247A1 (en) * | 2008-11-20 | 2010-05-27 | Metabowerke Gmbh | Electric motor-driven angle grinder, has angle transmission arrangement with one section formed as crown wheel, supporting section, and thread section for clamping unit utilized for fixing grinding tool to tool spindle |
Also Published As
| Publication number | Publication date |
|---|---|
| FI127036B (en) | 2017-10-13 |
| CN103620112B (en) | 2016-11-09 |
| FI20115655A0 (en) | 2011-06-23 |
| FI20115655A (en) | 2012-12-24 |
| WO2012175801A1 (en) | 2012-12-27 |
| DE112012002566T5 (en) | 2014-03-20 |
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