CN205062568U - A scraper for continuous operation's equipment that strikes off - Google Patents

Abstract

The utility model relates to a scraper for continuous operation's equipment that strikes off, the equipment of striking off is attached in the compound material machine of fibre, scraper (10) include: constitute the banded part (14) of frame (12) of scraper (10), banded part (14) has first vertical edge (16) of frame (12) and the vertical edge of second (18) of frame (12), hypotenuse (20) that constitute in first vertical edge (16) of banded part (14), with be close to in the length of scraper (10) a plurality of openings (22) of vertical edge (18) the seriate of second are used for making scraper (10) through attach in follow mechanical conveyer (52) of the equipment that strikes off (50) vertical direction motion of the equipment that strikes off (50), its characterized in that, the shape of opening (22) is the rectangle.

Description

For the scraper of doctoring apparatus run continuously

Technical field

The utility model relates to a kind of scraper of the doctoring apparatus for running continuously, and this scraper comprises:

Form the band-like portions of the framework of scraper, these band-like portions have the first longitudinal edge of framework and the second longitudinal edge of framework,

Be formed in the hypotenuse (Fase, rib) in the first edge of band-like portions, and

At multiple openings that the second adjacent edges arranges in turn in the length of scraper, pass through in order to make scraper to attach troops to a unit in the mechanical transport device of doctoring apparatus along the longitudinal direction movable scraper of scraper.

Background technology

The doctoring apparatus of fiber web machine is known in the art, and wherein, the wing of doctoring apparatus is by the longitudinal direction continuously along knife rest, and namely the direct of travel of fiber web is delivered to knife rest.An embodiment of this equipment is described in patent document FI122553.Scraper is transported to the inside of knife rest by the transport of doctoring apparatus, wherein, when transport moves joint element along the longitudinal direction, transport is by the upper surface of pressing scraper and bottom surfaces, and extrude the scraper be between them, so that scraper is delivered to knife rest simultaneously.But the cost realizing this design is very high, because in order to produce enough driving forces for joint element, doctoring apparatus needs extra hydraulic system.

Patent document US6651303 also discloses a kind of prior art, which describes the conveying to a kind of banded scraper.Doctor beam is separated with roller by the rising during conveying scraper, and blade moves forward the length of a knife rest, and rolls back advanced positions under doctor beam.The transport can helping blade by otch also can be perforation, and at this, scraper is equipped with circular opening.But this blade is not suitable for continuous print displacement.

Utility model content

The purpose of this utility model is, proposes a kind of scraper of the doctoring apparatus for running continuously, with compared with the various scrapers of prior art, is more easily transported according to scraper of the present utility model, and also more stable.

According to the scraper that the utility model proposes a kind of doctoring apparatus for running continuously, this scraper comprises: the band-like portions forming the framework of scraper, and these band-like portions have the first longitudinal edge of framework and the second longitudinal edge of framework; The hypotenuse formed in the first longitudinal edge of band-like portions; With the multiple openings arranged in turn near the second longitudinal edge on the long side of scraper, pass through for making scraper to attach troops to a unit in the mechanical transport device of doctoring apparatus and move along the longitudinal direction of doctoring apparatus, it is characterized in that, the shape of opening is rectangle.

Preferably, shape is that each opening of rectangle has the longitudinal side of two scrapers and two scraper transverse sides, and wherein, transverse side is longer than longitudinal side.

Preferably, the transverse side of each opening is perpendicular to the longitudinal direction of scraper, and longitudinal side is parallel to the longitudinal direction of scraper.

Preferably, the scraper that opening distance is each other about opening indulges the 1-3 of sideways length doubly, is preferably about 1.5-2.5 doubly, is particularly preferably about 2 times.

Preferably, the length of the scraper transverse side of each opening is that scraper indulges the 2-3 of sideways length doubly, is preferably 2.5 times.

Preferably, the scraper of each opening is 0.5-1.0 times of the scraper lateral length of each opening relative to the lateral separation of the second longitudinal edge of the framework of scraper, is preferably 0.6 times.

Preferably, the length of the scraper transverse side of each opening is 6-10mm, and be preferably about 8mm, the length of scraper transverse side is 15-25mm, is preferably about 20mm.

Preferably, the opening distance each other of scraper is 10-20mm, is preferably 15-20mm, is particularly preferably 17mm.

Preferably, additionally there is in the region of the framework of scraper between opening and the second longitudinal edge of doctor blade frames the stop surface of multiple framework perpendicular to scraper, for making scraper be connected with knife rest during assembling scraper.

The purpose of this utility model can be realized by a kind of scraper of doctoring apparatus of the continuous operation for fiber web machine, this scraper is configured with: the band-like portions forming the framework of scraper, and these band-like portions have the first longitudinal edge of framework and the second longitudinal edge of framework; And be arranged in the hypotenuse at the first edge of these band-like portions.Additionally, this scraper is also configured with the multiple openings arranged in turn on the long side of scraper, at described second adjacent edges, pass through in order to make scraper to attach troops to a unit in the mechanical displacement device of doctoring apparatus and move along the longitudinal direction of doctoring apparatus, the shape of these openings is rectangle.In the opening of rectangle, displacement can concentrate on larger face equably, it reduces the point-like load concentrated in doctor blade frames, and which thereby enhances the stability of scraper.

Preferred each rectangular aperture is provided with the longitudinal side of two scrapers and two scraper transverse sides, and wherein, transversely the side in direction is longer than side along the longitudinal direction.The importance of transverse side is to make the pressure of the conveying arrangement of doctoring apparatus concentrate on transverse side, and this is relevant with the intensity of scraper.On the other hand, opening has enough short size along the longitudinal direction of scraper, can ensure: the connecting portion (Steg, bridge part) between opening of single metalwork is enough to bear the load caused by conveying arrangement in intensity.

Two transverse sides of preferred each opening are vertical relative to the longitudinal direction of scraper, and longitudinal side is parallel relative to the longitudinal direction of scraper.Make thus the pressure produced by the transport of the scraper of doctoring apparatus stably concentrate on scraper each opening along on the transverse edge of scraper longitudinal direction, on the other hand, scraper longitudinal edge by guiding scraper be delivered to correct direction.

Opening distance is to each other 1-3 times of the longitudinal side length of scraper of opening, is preferably 1.5-2.5 doubly, is particularly preferably 2 times.At this, the connecting portion be present between opening is enough large, thus makes scraper enough hard, to transport the transport of doctoring apparatus.

The length of the scraper transverse side of each opening is that scraper indulges the 2-3 of sideways length doubly, such as 2.5 times.At this, the connecting portion between opening is enough large, and the edge of the scraper transverse side of opening forms enough large bearing-surface on the other hand.

The scraper lateral separation d at another edge of the framework of preferred each opening and scraper is 0.5-1 times of the scraper lateral length of each opening, preferably be about 0.6 times, and with the distance s at the first edge of the framework of scraper be the 2-3 of the scraper lateral length of each opening doubly, be preferably 2.0-2.3 doubly.Therefore, opening is positioned as in knife rest, and opening is hidden in the below of the upper lip of knife rest and protected not contaminated, but enough far away apart from another edge, thus can not damage the intensity of scraper.

According to one of the present utility model preferred embodiment, the scraper longitudinal length of each opening of scraper is 6-10mm, preferably about 8mm, and its scraper lateral length is 15-25mm, is preferably 20mm.Such size setting is optimum for the intensity of required bearing-surface, scraper and the size of existing knife rest.

According to one of the present utility model preferred embodiment, the opening distance to each other of scraper is 10-20mm, is preferably 15-20mm, is particularly preferably 17mm.Such size setting is also optimum for the stability of required bearing-surface, scraper and the size of existing knife rest.

According to a kind of embodiment, in the region of scraper additionally between opening and the second edge of doctor blade frames, be configured with multiple stop surface vertical relative to doctor blade frames, for making scraper be connected with knife rest during assembling scraper.By means of this stop surface, can not run at fiber web machine and scraper perpendicular on knife rest time, scraper is remained on knife rest effectively.Preferred stop surface is functional caulking part (Nietungen).

Precisely, the feature according to scraper of the present utility model is, the shape of opening is rectangle.

Accompanying drawing explanation

Referring to the accompanying drawing showing embodiments more of the present utility model, the utility model is described in detail.

Fig. 1 shows according to scraper of the present utility model with axonometry, and is blocked by this scraper along the longitudinal direction,

Fig. 2 a shows the top view according to scraper of the present utility model,

Fig. 2 b shows the side view according to scraper of the present utility model,

Fig. 2 c shows the front view according to scraper of the present utility model,

Fig. 3 shows the schematic diagram according to the scraper be associated with doctoring apparatus of the present utility model.

Detailed description of the invention

As shown in Fig. 1 to Fig. 2 c, be configured with the band-like portions 14 be made up of the frame 12 of scraper 10 according to scraper 10 of the present utility model, these band-like portions can be made up of metal or synthetic composite material.Band-like portions 14 comprise: the first longitudinal edge 16 of framework 12, and it should be arranged relative to surface to be doctored under state of runtime machine; And second longitudinal edge 18, it should be arranged in the opening of knife rest.Scraper is truncated in FIG, but it should be noted: the length of this banded scraper is 12 meters, or even hundred meters.In this article, band shape should be interpreted as: be resilient according to scraper 10 of the present utility model, therefore it can bend to preserve on reel (Spule).Except framework 12, scraper 10 is also configured with hypotenuse 20 on the edge 16 of band-like portions 14, and near the second edge 18, is configured with the opening 22 that multiple shape is rectangle in turn in the length of scraper 10.Whole length preferably along scraper is all provided with opening.By means of opening, scraper 10 can by shown in Figure 3, attach troops to a unit in the mechanical transport device of doctoring apparatus and move along the longitudinal direction of doctoring apparatus.The hypotenuse 20 of scraper 10 touches surface or the paper web of roller under operation, or is positioned near them.When object moment or when otherwise moving, should be object, preferably roller surface removal of contamination to be cleaned by means of scraper, and fiber web should be separated with roller surface, or material that is liquid or paste should be applied on the surface of fiber web, to be web coating.More much longer than the length on surface to be doctored times of the length of scraper.In addition, the length of scraper is equally than much longer times of the parts (i.e. knife rest) being arranged for support blade of doctoring apparatus.

According in scraper 10 of the present utility model, the shape of opening 22 is as shown in Figure 2 a rectangle.During blade in transport doctor blade holder, opening 22 should be configured for one or more bearing-surfaces of the element transporting scraper; Therefore to be optimized the area of bearing-surface when not hindering the stability of scraper.Each rectangular aperture 22 comprises the longitudinal side 24 of two scrapers and two scraper transverse sides 26, and wherein, transverse side 26 is longer than longitudinal side 24.About vertical sideways target be: this side should long enough, to handle scraper when being transported in knife rest by scraper, this side also should be enough short but then, to keep enough distances with the metal surface do not contacted between opening, thus guarantees that scraper has enough intensity.Preferred opening 22 distance is each other about the twice of the length of the longitudinal side 24 of scraper 10 of opening 22.At this, be retained in enough large of connecting portion closed between opening 22, thus the rigidity of scraper can be facilitated.

Can such as the doctoring apparatus 50 of operation, automation continuously as shown in Figure 3 according to scraper of the present utility model.Doctoring apparatus 50 can be equipped with two critical pieces, i.e. knife rest 30 and the mechanical transport device 52 for changing scraper.Be preferably this conveying arrangement and arrange the first reel 34 being used for the scraper 10 that will flow to knife rest, and the second reel 35 using blade 10 for pulling down from knife rest 30.In addition, actuator 36 can also be arranged for conveying arrangement 52, for transporting scraper 10 between reel 34 and 35; With induction element 48, for being transported in knife rest 30 by that be adapted to the first reel, to be conveyed scraper 10, and be delivered to the second reel 35 from knife rest 30.To the conveying of scraper can at the actuator 36 of conveying arrangement by scraper 10 from one or transport period from multiple scraper opening and carry out.Actuator 36 such as can be constructed to cylinder formula actuator (Zylinderstellglied), is provided with independent propelling head in its end, and this propelling head is placed (einstellt) open interior at scraper.The haul distance of actuator can be equal with opening distance each other, at this, advances head that scraper is outwards carried successively from each opening of this row of openings.Alternatively, the length of actuator also can be several times as much as opening distance each other.The shape of cross section of preferred propelling head is close to identical with the shape of opening.At this, the pressure concentrated on longitudinal side by scraper is evenly distributed over, and longitudinal side of opening attempts to guide scraper simultaneously, to make scraper now identical with the direction of propulsion of the actuator of conveying arrangement.Actuator also can be constructed to the roll actuator being equipped with pinnacle (Spitzen) or other similar components.At this, also preferably make transported elements relative arrange in the flexible shapes of opening 22, to make the ahead running of scraper effective as much as possible, the forward of blade is even, and is correctly controlled.

With reference to the accompanying drawings, opening 22 is set to the second longitudinal edge 18 close to scraper 10.Under being particularly used in so-called viscosity service condition according to scraper of the present utility model, there is the pollutant sticked to very slightly on scraper under these conditions.The coating (such as synthetic material coating or polytetrafluorethylecoatings coatings) that the knife rest of preferred doctoring apparatus tails off at upper lip and the lower lip of knife rest has knife rest friction, the slip of scraper in knife rest can be alleviated by this friction.

Preferably the length of the scraper 10 () transverse side 26 of each opening 22 is about 2.5 times of the length of the longitudinal side 24 of scraper 10 ().Preferably the scraper 10 lateral separation d at the second edge 18 of the framework 12 relative to scraper 10 of each opening 22 is about 0.6 times of scraper 10 lateral length of each opening 22, and be about 2 times of scraper 10 lateral length of each opening 22 relative to the distance s at the first edge 16 of the framework 12 of scraper 10, such as 2.1 to 2.2 times.At this, the second longitudinal edge 18 of extended distance scraper is enough far away, to realize the intensity of scraper, opening is also enough wide on the other hand, thus can produce enough large transportation surface in a lateral direction relative to the longitudinal direction of scraper.In the opening of rectangle, the scope of the scraper transverse side of whole opening can be used as transportation surface, at this, surface pressing will keep lower and therefore improves the intensity of scraper.

The transport to scraper can be implemented in practice the following stage.First make cylinder formula actuator enter initial position, at this, piston is arranged in cylinder body, advances head to separate with scraper.In second stage, make propelling head decline subsequently enter in the opening of scraper, and realize the transport of cylinder formula actuator in the phase III, at this, scraper moves forward with the length of the stroke of cylinder formula actuator.Subsequently, advance head to be taken off by from opening, the piston of cylinder formula actuator enters in cylinder body again, for new propelling.The propelling undertaken by actuator must point to next scraper all the time by reel, thus makes advancement finger to the second reel.

Promote can be arranged on multiple different position according to the doctoring apparatus of scraper of the present utility model, must carry out over these locations striking off with clean rotating surface.Range of application can be such as cleaning the roller on drying section of paper machine.Another Application scope can be such as and be coated with the roller be associated.Scraper also can be used as scraper or the creping blade (Kreppklinge) of coating machine.

In order to change according to banded scraper 10 of the present utility model, two reels 34 and 35 as shown in Figure 3 can be arranged for doctoring apparatus 50.First reel 34 can be connected with the head of knife rest 30, is preferably kept at reeling on the first reel by untapped scraper 10.Correspondingly, the second reel 35 can be connected with the second end of knife rest 30, and used scraper 10 is kept on the second reel with reeling.Preferably the first reel 34 is arranged on the guiding side of fiber web, and the second reel 35 is arranged on the driving side of fiber web, and this makes it possible to more easily be incorporated in doctoring apparatus by new band.In figure 3, guide side to be arranged on the right, driving side is arranged on the left side.Fiber web machine refers to the machine manufacturing web shape product by the fiber based on paper pulp.Such machine is such as paper machine, board machine, toilet paper machine, Paper pulp machine and web post-processor (such as off-line coating machine, coating calender and web reprocessing machine and squeezer).

Reel 34 can mainly be arranged on vertical position in the location of knife rest 30 as illustrated in fig. 3 with 35.Scraper 10 is transported to knife rest 30 from the first reel 34 by the control element 48 belonging to conveying arrangement 52, and is again transported to the second reel 35 from knife rest 30 by control element 48.This control element is designed to, makes scraper be diverted on the direction identical with the knife rest being substantially in run location in its width direction, at this, scraper is delivered in knife rest and carries out without friction.The function class of this control element is similar to the control element described in Finnish patent document FI117015.

By scraper 10 from the first reel 34 to the process that knife rest 30 is carried, scraper 10 can be diverted on the direction identical with knife rest 30 in its width direction by the induction element 42 of control element 48.On spool 34, the shape of this initial end conforms to the cross section of scraper 10 in the initial end supporting of induction element 42.Induction element 42 guides ground support blade 10, and at this, scraper 10 is directed in director element (Leiterelement) 42 when not producing local pressure peak value.After director element 42, scraper 10 is introduced in pipe 44, at this, scraper 10 in their longitudinal direction and the position of knife rest 30 swing between induction element 46 and 48 abreast.Be 10 °-80 ° relative to the difference of windup-degree of the vertical line of band between the induction element be preferably disposed adjacent, be preferably 20 °-60 °.The director element that preferred distance scraper is arranged farthest can be horizontal, and at this, reel can be arranged vertically, and this is conducive to function and the applicability of reel.Also reel can be orientated as, make the band outwards will carried from it advance consistent with the band that directly will flow to knife rest, at this, the position of reel is slightly crooked.

Be used in doctoring apparatus according to scraper of the present utility model, in this doctoring apparatus, the conveying arrangement of scraper runs continuously, that is, as continuous print action, scraper will be transported lentamente.Therefore, described replacing can be carried out like this: the travelling speed of scraper is 5-100mm/min, is preferably 20-50mm/min.Band is transported by the longitudinal direction along knife rest in knife rest, that is, along guiding the transport of the direction of side-driving side or oppositely transporting.Preferred doctoring apparatus is during transportation positioned on its operating position, and that is, this scraping methods can not proceed to breaks in production between the whole stage of replacement.

By means of this doctoring apparatus, the same position of scraper can be used by one or many, because the wearing and tearing of moveable scraper are uniform.When being used again by the scraper that one or many uses, first scraper is wound to another reel from knife rest, and can again by means of director element and induction element from the reel that this another reel has been diverted to.Check the state of scraper time on the reel being wound on this sky, and guide this reel as the first reel for carrying scraper subsequently.In order to enable scraper again correctly operate, need to carry out centre winding.Also can used scraper be sent to manufacturer, to carry out keeping in repair and recycling.When scraper is in two directions advanced, the cross side load of the blade openings of blade alternately points to both sides.

According to a kind of embodiment, can for the second longitudinal edge arranging of scraper to be perpendicular to the stop surface of the horizontal plane be made up of the framework of scraper, this stop surface can be made up of a series of functional caulking part at adjacent edges.This caulking part can be realized by punching press on the framework of scraper, thus make caulking part almost form vertical bearing-surface on the horizontal plane of scraper, this bearing-surface can prevent scraper along the direct of travel of fiber web, namely along machine direction, namely along moving relative to the horizontal direction of the longitudinal direction of scraper.Make scraper to be transported in the knife rest of doctoring apparatus thus, and drop without the need to worrying scraper from doctoring apparatus, although the horizontal plane of scraper is almost vertical.The use occasion almost in vertical position that is in operation of this scraper for doctoring apparatus is particularly advantageous.

According to one preferred embodiment, the thick 1.5mm of scraper, and be 75mm along the laterally extending width of the longitudinal direction of scraper.Opening is set to the second edge 12mm of distance scraper, and these openings distance is each other 17mm.Each opening is 8mm along the length of the longitudinal direction of blade, and the transverse width of blade is 20mm.At this, the area of the bearing-surface be shifted for single opening that each opening has is 30mm ².

Preferably be formed from steel according to scraper of the present utility model, wherein, opening is stamped to form in the part forming doctor blade frames.The hypotenuse of blade can such as be made by laser cutting.Also can be made up of fiber strengthened synthetic composite material according to scraper of the present utility model.

Claims (16)

1. the scraper of doctoring apparatus for running continuously, described doctoring apparatus is attached troops to a unit in the multiple material machine of fiber, and described scraper (10) comprising:

Form the band-like portions (14) of the framework (12) of described scraper (10), described band-like portions (14) have first longitudinal edge (16) of described framework (12) and second longitudinal edge (18) of described framework (12)

The hypotenuse (20) formed in first longitudinal edge (16) of described band-like portions (14), and

Near multiple openings (22) that described second longitudinal edge (18) arranges in turn in the length of described scraper (10), move along the longitudinal direction of described doctoring apparatus (50) by attaching troops to a unit in the mechanical transport device (52) of described doctoring apparatus (50) for making described scraper (10), it is characterized in that, the shape of described opening (22) is rectangle.

2. scraper according to claim 1, it is characterized in that, shape is that the described opening (22) of rectangle all has two the longitudinal side of scrapers (10) (24) and two scrapers (10) transverse side (26), wherein, described transverse side (26) is longer than described longitudinal side (24).

3. scraper according to claim 2, it is characterized in that, the transverse side (26) of each described opening (22) is perpendicular to the longitudinal direction of described scraper (10), and described longitudinal side (24) is parallel to the longitudinal direction of described scraper (10).

4. the scraper according to Claims 2 or 3, is characterized in that, described opening (22) distance is each other 1-3 times of the length of scraper (10) longitudinal side (24) of described opening (22).

5. scraper according to claim 4, is characterized in that, described opening (22) distance is each other 1.5-2.5 times of the length of scraper (10) longitudinal side (24) of described opening (22).

6. scraper according to claim 5, is characterized in that, described opening (22) distance is each other 2 times of the length of scraper (10) longitudinal side (24) of described opening (22).

7. the scraper according to Claims 2 or 3, is characterized in that, the length of scraper (10) transverse side (26) of each described opening (22) is 2 to 3 times of the vertical sideways length of described scraper (10).

8. scraper according to claim 7, is characterized in that, the length of scraper (10) transverse side (26) of each described opening (22) is 2.5 times of the vertical sideways length of described scraper (10).

9. scraper according to any one of claim 1 to 3, it is characterized in that, the scraper (10) of each described opening (22) is 0.5-1.0 times of scraper (10) lateral length of each described opening (22) relative to the lateral separation (d) at second edge (18) of the framework (12) of described scraper (10).

10. scraper according to claim 9, it is characterized in that, the scraper (10) of each described opening (22) is scraper (10) lateral length 0.6 times of each described opening (22) relative to the lateral separation (d) at second edge (18) of the framework (12) of described scraper (10).

11. scrapers according to Claims 2 or 3, it is characterized in that, the length of scraper (10) longitudinal side (24) of each described opening (22) is 6-10mm, and the length of described scraper (10) transverse side (26) is 15-25mm.

12. scrapers according to claim 11, it is characterized in that, the length of scraper (10) longitudinal side (24) of each described opening (22) is 8mm, and the length of described scraper (10) transverse side (26) is 20mm.

13. scrapers according to any one of claim 1 to 3, is characterized in that, opening (22) distance each other of described scraper (10) is 10-20mm.

14. scrapers according to claim 13, is characterized in that, opening (22) distance each other of described scraper (10) is 15-20mm.

15. scrapers according to claim 14, is characterized in that, opening (22) distance each other of described scraper (10) is 17mm.

16. scrapers according to any one of claim 1 to 3, it is characterized in that, additionally there is the stop surface of multiple framework perpendicular to described scraper (10) (12), for making described scraper (10) be connected with knife rest (30) in the described scraper of assembling (10) period in the region of the framework (12) of described scraper (10) between second edge (18) of the framework (12) of described opening (22) and described scraper (10).