CN104246066B - Forming section - Google Patents
Forming section Download PDFInfo
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- CN104246066B CN104246066B CN201280072587.6A CN201280072587A CN104246066B CN 104246066 B CN104246066 B CN 104246066B CN 201280072587 A CN201280072587 A CN 201280072587A CN 104246066 B CN104246066 B CN 104246066B
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- Prior art keywords
- net
- forming section
- net ring
- ring
- web
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Classifications
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
- D21F11/02—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the Fourdrinier type
- D21F11/04—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the Fourdrinier type paper or board consisting on two or more layers
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F9/00—Complete machines for making continuous webs of paper
- D21F9/003—Complete machines for making continuous webs of paper of the twin-wire type
- D21F9/006—Complete machines for making continuous webs of paper of the twin-wire type paper or board consisting of two or more layers
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F9/00—Complete machines for making continuous webs of paper
- D21F9/02—Complete machines for making continuous webs of paper of the Fourdrinier type
Abstract
The forming section of a kind of paper machine or lap machine, including the first net ring (11), through the first breast roll (12) and form first single net forming section (S1)；Primary headbox (100), for being supplied to the first net (11) by weir plate jet；First slewing rollers (13), the first net (11) is imported downward-sloping inclined-plane by it after first single net forming section (S1)；Second net ring (21), forms second single net forming section (S2)；Secondary headbox (110), for being supplied to the second net (21) by weir plate jet；Second slewing rollers (23), for importing downward-sloping inclined-plane by the second net (21) after second single net forming section (S2)；Engagement roller (24), forming the abutment (J1) of the first web (W1) and the second web (W2) between the first net ring (11) and the second net ring (21), described abutment (J1) is under the level height of first single net forming section (S1)；First single net forming section (S1) and second single net forming section (S2), lie substantially in identical level height.
Description
Technical field
The present invention relates to a kind of paper machine or lap machine forming section.
Background technology
Publication WO2009/068728 discloses a kind of hybrid forming section, including the off line ring constituting the first single wet end following breast roll.The initiating terminal of first single wet end includes the first drying zone, and this first drying zone is made up of with following this first pulsation banding cover shaping cambered plate at least one first fixing shaping cambered plate.First shapes cambered plate includes straight cover, and this straight is covered with through hole and passes under pressure through the hole of cover and work.The slurry being traveling in off line ring top, by substantially constituting along longitudinal opening of machine or gap, is thus applied non-pulsating dehydration by this some holes.This forming section also includes the first multilamellar head box of the initiating terminal place supply weir plate jet for shaping cambered plate first.After first shapes cambered plate, the first upper wire loop and off line ring collectively form first pair of wet end.The accompanying drawing of this publication illustrates the forming device of the forming unit with two independent parts.Following after first pair of wet end of hybrid forming device is net unit on second, and wherein the second online constitutes second single wet end.Second single-layer headboxes is at the initiating terminal place supply weir plate jet of second single wet end.The Part I web formed in hybrid forming device and the Part II web formed in the second upper wire loop engage in the abutment formed by the inside roller of the second upper wire loop and off line ring.Following after abutment is short double; two wet ends, guarantees the joint of two partial web on short double; two wet ends.Then, in conjunction with web guided into pickup point by off line ring.The top of off line ring substantially straight.
Finnish patent 121147 discloses a kind of pre-compaction forming portion and a kind of device for producing multi-layer web.Forming section in the accompanying drawing of this patent includes the first net ring for forming Part I web and for forming the second net ring of Part II web.First net ring has substantially horizontal first forming section and followed in turn by be directed downwardly toward second.Second net ring also has substantially horizontal first forming section and followed in turn by be directed downwardly toward second.In precompressed zone, the first net and the second net engage in the section being directed downwardly toward.After precompressed zone, by the slewing rollers being positioned at the second net ring, the direct of travel of net is become horizontal direct of travel.Then, netted combining web by first and guide pickup point into.
The multilevel shaping portion (multiplyformingsections) problematically, the height of forming device is significantly high of prior art so that forming section structure is extremely complex, causes that scheme is costly.
Summary of the invention
It is an object of the invention to realize a kind of compact paper machine or lap machine forming section.
Forming section according to the present invention is characterised by feature as described below.
Forming section according to the present invention includes:
First net ring, through the first breast roll, and is subsequently formed first single net forming section at the first breast roll in the first direction；
Primary headbox, for being supplied to the first net ring at the initiating terminal place of first single net forming section by weir plate jet, to form the first web；
First slewing rollers, are positioned at the first net ring, in order to the first net ring is imported downward-sloping inclined-plane after first single net forming section；
Second net ring, through the second breast roll, and is subsequently formed second single net forming section at the second breast roll in a second direction, and described second direction is contrary with first direction；
Secondary headbox, for being supplied to the second net ring at the initiating terminal place of second single net forming section by weir plate jet, to form the second web；
Second slewing rollers, are positioned at the second net ring, in order to, after second single net forming section, the second net ring is imported downward-sloping inclined-plane；
Engagement roller, after being positioned at the second net ring and the second slewing rollers, forms the first web and the abutment of the second web between the first net ring and the second net ring, and described junction point is under the level height of first single net forming section；
Above-mentioned first single net forming section and second single net forming section lie substantially in identical level height；And
Pickup unit, is positioned at pickup fabrics ring, and forms the pickup point between the first net ring and pickup fabrics ring.
Forming device according to the present invention is characterised by, first net ring and the second net ring are bonded together in above-mentioned abutment, the first web and the second web are bonded into a web combined so that the first net ring and the second net ring are wound around engagement roller with wrap angle sigma, and
After engagement roller, the first net ring separates with the second net ring, in order to the web of joint is transferred to pickup point so that the first net ring between abutment and pickup point in the horizontal direction or upwardly inclined direction advance.
Preferably, include at least one additional net ring according to the forming section of the present invention, in order to collectively form at least one double; two wet end with the first net ring or the second net ring.
Forming section according to the present invention is compact, and it is prone to be changed for various web kinds.This forming device can be used for producing smooth surface triplex board web upward in the first embodiment, or can be used in a second embodiment producing smooth surface triplex board web down.Realize first embodiment when additional net ring is set to and associates with the first net ring, and realize the second embodiment when additional net ring is set to and associates with the second net ring.What the first framework included having first strong point in upper end vertically supports beam, what the second framework included having second strong point in upper end vertically supports beam, and described first strong point and second strong point are suitable to receive the 3rd strong point of the bottom vertically supporting beam being positioned at the 3rd framework.
Preferably, first net ring is at least supported on by first strong point and includes horizontally and vertically supporting on the first framework of beam, preferably, second net ring is at least supported on by second strong point and includes horizontally and vertically supporting on the second framework of beam, and the horizontal shore of described first framework and the horizontal shore of the second framework are in identical level height.Additional net ring can be supported in the additional frame including horizontally and vertically supporting beam by additional support point, and these additional support points for being connected to the first framework and/or the second framework by described additional frame.
When follow arrange after forming device be SymPressB press section time, it is necessary to make the smooth surface of web that produced by forming device down.The smooth surface down of the web produced in forming device will be adjusted to the plane central region roller reclined in SymPressB press section.
When follow arrange after forming device be OptiPress press section time, it is possible to need to make the smooth surface of web that produced by forming device upward.
The smooth surface upward of the web produced in forming device slides onto fabric by being adjusted to the light reclined in OptiPress press section.
Forming section according to the present invention may also include at least one the additional net ring for collectively forming at least one double; two wet end with the first net ring and for collectively forming at least one additional net ring of at least one double; two wet end with the second net ring.
In the third embodiment, this forming device can also be used for producing four layer paperboard webs.Associate with the first net ring and be set to associate with the second net ring by second the 3rd net ring by first the 3rd net ring is set to, realize the 3rd embodiment.
In all embodiments, according to the total height of the forming device of the present invention less than 7m.The height of the forming device of corresponding prior art is then more than 10m.Owing to being used for being in the abutment that Part I web and Part II web engage significantly under the height of first single net forming section so that second single net forming section can be positioned at the level height identical with first single net forming section.In all four embodiment, the total height of forming device is identical.In relatively low forming device, drive motor and other equipment on driving side will be in relatively low height, it means that the rigidity requirement for framework can reduce.
Accompanying drawing explanation
Describe some specific embodiments of the present invention with reference to the accompanying drawings in detail, in the accompanying drawings:
Fig. 1 illustrates the first embodiment of the forming section according to the present invention.
Fig. 2 illustrates the second embodiment of the forming section according to the present invention.
Fig. 3 illustrates the 3rd embodiment of the forming section according to the present invention.
Fig. 4 illustrates the 4th embodiment of the forming section according to the present invention.
Detailed description of the invention
Fig. 1 illustrates the first embodiment of the forming section according to the present invention.This forming section includes the first net ring 11, and this first net ring 11 is through the first breast roll 12, and D1 is subsequently formed first single net forming section S1 at the first breast roll 12 in the first direction.Primary headbox 100 supplies the first weir plate jet at the initiating terminal place of first single net forming section S1.This forming section also includes the second net ring 21, and this second net ring 21 is through the second breast roll 22, and D2 is subsequently formed second single net forming section S2 at the second breast roll 22 in a second direction.Second direction D2 is contrary with first direction D1.Secondary headbox 110 supplies the second weir plate jet at the initiating terminal place of second single net forming section S2.The first single net forming section S2 of single net forming section S1 and the second is substantially level.
This forming section also includes additional net ring the 3rd net ring 31 in other words, and the 3rd net ring and the first net ring 11 collectively form first couple of wet end T1.First couple of wet end T1 follows closely after first single net forming section S1.3rd net ring 31 is positioned on the first net ring 11.
First net ring 11 also includes the first slewing rollers 13, and these first slewing rollers 13 are positioned at the first net ring 11, in order to turn to the traffic direction of the first net 11 into downward-sloping operation.
Second net ring 21 includes the second slewing rollers 23, and these second slewing rollers 23 are positioned at the second net ring 21, in order to the direction of the second net 21 is proceeded to downward-sloping operation.Second net ring 21 also includes the first engagement roller 24, and this first engagement roller is positioned at the second net ring 21 and forms the abutment J1 of (the second net ring) and the first net ring 11.
The Part I web W1 formed in first hybrid forming section S1, T1 and the Part II web W2 formed in second single net forming section S2 engages in described abutment J1.After the J1 of abutment, in conjunction with web W be wound along the first engagement roller 24 between the first net ring 11 and the second net ring 21 with the wrap angle sigma between 15 ° to 90 °.Thus guarantee the adhesion strength of the web W combined, and make it possible to form relatively low forming section structure.After the first engagement roller 24, wrap angle sigma followed by acclivitous operating path (run), and the second net 21 is separated with the first net 11 and is directed to return rotation during this period.At the some place that the second net 21 and the first net 11 separate, it is attached to the first net 11 by the suitable combining web W of aspirator.Then, the final web W combined is further advanced into pickup point PP in the level or acclivitous operating path of the first net 11.This assures and whole forming section height is remained relatively low, and forming section framework can easily change according to various different paper product kinds.In pickup point PP, the pickup unit 210 being positioned at pickup fabrics ring 200 is utilized to be shifted from the first net 11 by the web W finally combined.Pickup unit 210 and the first net 11 collectively form pickup point PP.Preferably, this pickup unit is suction box or suction roll.After (process) pickup point PP, the first net 11 is directed to return and rotates.The minimum point of engagement roller 24 is in identical height or relatively low height compared with the minimum point of pickup unit 210.
In this first embodiment of the present invention, primary headbox 100 advantageously two-layer head box, secondary headbox 110 is one layer of head box advantageously.The lower surface of the Part II web W2 formed in second single wet end S2 will form the smooth upper surface of the final web W combined.The second net 21 that the described lower surface of Part II web W2 will be posted by second single wet end S2.The smooth upper surface of the final three layered web W combined will be the surface to be printed of cardboard.
First net ring 11 is supported on the first framework F1, and the second net ring 21 is supported on the second framework F2, and the 3rd net ring 31 is supported on the 3rd framework F3.First framework F1, the second framework F2 and the three framework F3 include support beam horizontally and vertically.Fore side at forming device, two vertical support beam V1a, V1b in first framework F1 include first strong point P1a, P1b, and first strong point P1a, P1b is suitable to receive corresponding the 3rd strong point P3a, the P3b vertically supporting beam V3a, V3b of the fore side being positioned at the 3rd framework F1.Certainly, what have correspondence on the driving side of forming device vertically supports beam, and namely total of four vertically supports beam.The strong point P1a, P1b and P3a, P3b can be formed by the flange being located at the end supporting beam.These flanges can be bolted.At the fore side of forming device, also having two vertical support beam V2a, V2b in the second framework F2, the two vertically supports beam and is also suitably for receiving the 3rd framework F3.After the J1 of abutment, the latter half of bottom being supported on the second framework F2 of the first net ring 11.
Fig. 2 illustrates the second embodiment of the forming section according to the present invention.Except the position of additional net ring 31, the second embodiment is consistent with the first embodiment shown in Fig. 1.In this embodiment, additional net ring the 3rd net ring 31 and the second net ring 21 in other words collectively forms first couple of wet end T1.In this second embodiment, the 3rd additional net ring 31 is mirror image relationship with the 3rd net ring 31 in first embodiment.
Advantageously, the first slewing rollers 13 in the first net ring 11 are supported on the first swing arm 13a.When working in first couple of wet end T1, the first swing arm 13a of the first slewing rollers 13 in the first net ring 11 first embodiment in FIG is arranged on upper position, and is arranged on lower position in this second embodiment.Position according to the first slewing rollers 13 in the first net ring 11, the first deflector roll 15 in the first net ring 11 can move as shown by the arrow to mate the length of the first net ring 11.
The second slewing rollers 23 in second net ring 21 are also supported on the second swing arm 23a.When working in first couple of wet end T1, the second swing arm 23a of the second slewing rollers 23 in the second net ring 21 first embodiment in FIG is arranged on lower position, and is arranged on upper position in this second embodiment.Position according to the second slewing rollers 23 in the second net ring 21, the second deflector roll 25 in the second net ring 21 can move as shown by the arrow to mate the length of the second net ring 21.
The Part I web W1 and the Part II web W2 formed in second hybrid forming section S2, T1 that are formed in first single forming section S1 engage in the J1 of abutment.After the J1 of abutment, in conjunction with web W be wound along the first engagement roller 24 between the first net ring 11 and the second net ring 21 with the wrap angle sigma between 15 ° to 90 °.After the first engagement roller 24, wrap angle sigma followed by acclivitous operating path, and the second net 21 separates with the first net 11 and is directed to return rotation during this period.At the some place that the second net 21 and the first net 11 separate, it is attached to the first net 11 by the suitable combining web W of aspirator.Then, the final web W combined is further advanced into pickup point PP in the level or acclivitous operating path of the first net 11.The minimum point of engagement roller 24 is in identical height or relatively low height compared with the minimum point of pickup unit 210.
In this second embodiment of the present invention, primary headbox 100 is one layer of head box advantageously, secondary headbox 110 advantageously two-layer head box.The lower surface of the Part I web W1 formed in first single wet end S1 will form the smooth base surface of the final web W engaged.The first net 11 that the described lower surface of Part I web W1 will be posted by first single wet end S1.The smooth base surface of the final three layered web W engaged will be the surface to be printed of cardboard.
First net ring 11 is supported on the first framework F1, and the second net ring 21 is supported on the second framework F2, and the 3rd net ring 31 is supported on the 3rd framework F3.First framework F1, the second framework F2 and the three framework F3 include support beam horizontally and vertically.Fore side at forming device, two vertical support beam V2a, V2b in second framework F2 include second strong point P2a, P2b, and second strong point is suitable to receive corresponding the 3rd strong point P3a, the P3b vertically supporting beam V3a, V3b of the fore side being positioned at the 3rd framework F3.Certainly, what have correspondence on the driving side of forming device vertically supports beam, namely always has four vertical support beams.The strong point P2a, P2b and P3a, P3b can be formed by the flange being located at the end supporting beam.These flanges can be bolted.So, when without the first framework F1 and the second framework F2 is made any change, namely the first framework F1 and the second framework F2 is ready for receiving the 3rd framework F3.So, both it is prone to change to the forming device according to Fig. 1 according to the forming device of the present invention, is also easy to change to the forming device according to Fig. 2.Need the position simply changing the 3rd net ring 31 made, the position changing the first slewing rollers 13, the position changing the second slewing rollers 23 and exchange head box 100,110.After the J1 of abutment, the latter half of bottom being supported on the second framework F2 of the first net ring 11.
It is of course also possible to use the first additional net ring 31 associated with the first net ring 11 and the second additional net ring 41 associated with the second net ring 21.It is therefore preferable that two head boxs 100,110 can be two-layer head box.This 3rd embodiment of the forming section according to the present invention is illustrated in figure 3.In the 3rd embodiment of the present invention, forming device includes the first net ring 11, and this first net ring 11 is through the first breast roll 12, and D1 is subsequently formed first single net forming section S1 at this first breast roll 12 in the first direction.Primary headbox 100 supplies the first weir plate jet at the initiating terminal place of first single net forming section S1.This forming section also includes the second net ring 21, and this second net ring 21 is through the second breast roll 22, and D2 is subsequently formed second single net forming section S2 at the second breast roll 22 in a second direction.Second direction D2 is contrary with first direction D1.Secondary headbox 110 supplies the second weir plate jet at the initiating terminal place of second single net forming section S2.
This forming section also includes collectively forming the first additional net ring 31 of first couple of wet end T1 with the first net ring 11.First couple of wet end T1 follows closely after first single net forming section S1.First additional net ring 31 is positioned on the first net ring 11.This forming section also includes collectively forming the second additional net ring 41 of second couple of wet end T2 with the second net ring 21.Second couple of wet end T2 follows closely after second single net forming section S2.Second additional net ring 41 is positioned on the second net ring 21.Second additional net ring 41 and the first additional net ring 31 are mirror image relationship.
Advantageously, the first slewing rollers 13 in the first net ring 11 are supported on the first swing arm 13a.When working together with first couple of wet end T1, the first swing arm 13a of the first slewing rollers 13 in the first net ring 11 is arranged on upper position.
The second slewing rollers 23 in second net ring 21 are also supported on the second swing arm 23a.When working together with second couple of wet end T2, the second swing arm 23a of the second slewing rollers 23 in the second net ring 21 is also disposed at upper position.
The Part I web W1 formed in first hybrid forming section S1, T1 and the Part II web W2 formed in second hybrid forming section S2, T2 engages in described abutment J1.After the J1 of abutment, in conjunction with web W be wound along the first engagement roller 24 between the first net ring 11 and the second net ring 21 with the wrap angle sigma between 15 ° to 90 °.After the first engagement roller 24, wrap angle sigma followed by acclivitous operating path, and the second net 21 separates with the first net 11 and is directed to return rotation during this period.At the some place that the second net 21 and the first net 11 separate, it is attached to the first net 11 by the suitable combining web W of aspirator.Then, the final web W combined is further advanced into pickup point PP in the level or acclivitous operating path of the first net 11.In pickup point PP, by the pickup unit 210 being positioned at pickup fabrics ring 200, the web W finally combined is shifted from the first net 11.Pickup unit 210 and the first net 11 collectively form pickup point PP.After pickup point PP, the first net 11 is directed to return and rotates.Therefore, this forming device the final web produced can be four layer paperboard webs.The minimum point of engagement roller 24 is in identical height or relatively low height compared with the minimum point of pickup unit 210.
The first single wet end S2 of single wet end S1 and the second lies substantially in identical height.It means that the slice opening of the slice opening of primary headbox 100 and secondary headbox 110 is also at identical level height.Service (maintenance) platform in first framework F1 and the service platform in the second framework F2 are also at identical level height.
In the embodiment shown in the figures, pickup point PP is approximately at the level height identical with abutment J1.Certainly, if required, pickup point PP can also be in higher level height.In some cases, from the forming device before press section, web is directed to press section from higher level height to be likely more properly.
Fig. 4 illustrates the 4th embodiment of the forming section according to the present invention.This embodiment includes three additional net rings 31,41,51.First additional net ring and the first net ring 11 associate, and the second additional net ring 41 associates with the second net ring 21.Therefore, two head boxs 100,110 can be two-layer head box.3rd additional net ring 51 associates with the first net ring once again, and includes one layer of head box 120.Identical with Fig. 3, the first net ring 11 also passes through the first breast roll 12, and D1 is subsequently formed first single net forming section S1 at the first breast roll 12 in the first direction.Primary headbox 100 supplies the first weir plate jet at the initiating terminal place of first single net forming section S1.This forming section also includes the second net ring 21, and this second net ring 21 is through the second breast roll 22, and D2 is subsequently formed second single net forming section S2 at the second breast roll 22 in a second direction.Second direction D2 is contrary with first direction D1.Secondary headbox 110 supplies the second weir plate jet at the initiating terminal place of second single net forming section S2.
This forming section includes collectively forming the first additional net ring 31 of first couple of wet end T1 with the first net ring 11.First couple of wet end T1 follows closely after first single net forming section S1.First additional net ring 31 is positioned on the first net ring 11.This forming section also includes collectively forming the second additional net ring 41 of second couple of wet end T2 with the second net ring 21.Second couple of wet end T2 follows closely after second single net forming section S2.Second additional net ring 41 is positioned on the second net ring 21.Second additional net ring 41 and the first additional net ring 31 are mirror image relationship.This forming section also includes the 3rd additional net ring 51 associated with the first net ring 11 so that the 3rd additional net ring 51 also passes through the first breast roll 32, and forms the 3rd single net forming section S3 in the first direction after the 3rd breast roll 32 on D2.3rd head box 120 supplies the first weir plate jet at the initiating terminal place of the 3rd single net forming section S3.
The Part I web W1 formed in first hybrid forming section S1, T1 and the Part II web W2 formed in second hybrid forming section S2, T2 engages in described abutment J1.After the J1 of abutment, in conjunction with web W be wound along the first engagement roller 24 between the first net ring 11 and the second net ring 21 with the wrap angle sigma between 15 ° to 90 °.After the first engagement roller 24, wrap angle sigma followed by acclivitous operating path, second net 21 separates with the first net 11 and is directed to abutment J2 during this period, and the W and the Part III web W3 formed in the 3rd single net forming section S3 of the combination formed in forming section above engage in the J2 of abutment.After engagement roller 34, the 5th net ring 51 separates with the first net ring 11, and then the final web W combined is further advanced into pickup point PP in the level or acclivitous operating path of the first net 11.In pickup point PP, by the pickup unit 210 being positioned at pickup fabrics ring 200, the web W finally combined is shifted from the first net 11.Pickup unit 210 and the first net 11 collectively form pickup point PP.After pickup point PP, the first net 11 is directed to return and rotates.Therefore, this forming device the final web produced can be five layer paperboard webs.The minimum point of engagement roller 24 is in identical height or relatively low height compared with the minimum point of pickup unit 210.
In other words, this forming section may also include at least one additional net ring 31,41,51, in order to collectively form at least one double; two wet end T1, T2 with the first net ring 11 or with the second net ring 21.Or, forming section could be included for collectively forming at least one additional net ring 31,41,51 of at least one double; two wet end T1, T2 with the first net ring (11) and including at least one the additional net ring 31,41,51 for collectively forming at least one double; two wet end T1, T2 with the second net ring 21.
The example of embodiments of the invention described above is not intended to and limits the scope of the invention only to these embodiments.In claim limited range, the present invention can have multiple amendment.
Claims (10)
1. a forming section for paper machine or lap machine, including:
First net ring (11), through the first breast roll (12), and (D1) is subsequently formed first single net forming section (S1) described first breast roll (12) in the first direction；
Primary headbox (100), for being supplied to described first net ring (11) at the initiating terminal place of described first single net forming section (S1) by weir plate jet, to form the first web (W1)；
First slewing rollers (13), are positioned at described first net ring (11), in order to described first net ring (11) is imported downward-sloping inclined-plane after described first single net forming section (S1)；
Second net ring (21), through the second breast roll (22), and (D2) is subsequently formed second single net forming section (S2) described second breast roll (22) in a second direction, described second direction (D2) is contrary with described first direction (D1)；
Secondary headbox (110), for being supplied to described second net ring (21) at the initiating terminal place of described second single net forming section (S2) by weir plate jet, to form the second web (W2)；
Second slewing rollers (23), are positioned at described second net ring (21), in order to described second net ring (21) is imported downward-sloping inclined-plane after described second single net forming section (S2)；
Engagement roller (24), after being positioned at described second net ring (21) and described second slewing rollers (23), forming the abutment (J1) of described first web (W1) and described second web (W2) between described first net ring (11) and described second net ring (21), described abutment (J1) is positioned on the region, surface of described engagement roller (24) and is under the level height of described first single net forming section (S1)；
Described first single net forming section (S1) and described second single net forming section (S2) lie substantially in identical level height；And
Pickup unit (210), is positioned at pickup fabrics ring (200), and forms the pickup point (PP) between described first net ring (11) and described pickup fabrics ring (200),
It is characterized in that, described first net ring (11) and described second net ring (21) are bonded together in described abutment (J1), described first web (W1) and described second web (W2) to be combined into a web (W) combined, described first net ring (11) and described second net ring (21) are wound around described engagement roller (24) with wrap angle sigma, and
After described engagement roller (24), described first net ring (11) separates with described second net ring (21), the web of described combination to be transferred to described pickup point (PP) so that described first net ring (11) between described abutment (J1) and described pickup point (PP) in the horizontal direction or upwardly inclined direction advance.
2. the forming section of paper machine according to claim 1 or lap machine, it is characterised in that described wrap angle sigma is between 5 ° to 90 °.
3. the forming section of paper machine according to claim 1 or lap machine, it is characterised in that the minimum point of described engagement roller (24) is in identical height or relatively low height compared with the minimum point of described pickup unit (210).
4. the forming section of paper machine according to claim 1 or lap machine, it is characterized in that, described forming section also includes at least one additional net ring (31,41,51), and described additional net ring (31,41,51) is for collectively forming at least one first pair of wet end (T1) with described first net ring (11) or described second net ring (21).
5. the forming section of paper machine according to claim 4 or lap machine, it is characterized in that, described forming section also includes: at least one first additional net ring (31), in order to collectively form at least one first pair of wet end (T1) with described first net ring (11)；And at least one second additional net ring (41), in order to collectively form at least one second pair of wet end (T2) with described second net ring (21).
6. the forming section of paper machine according to any one of claim 1 to 3 or lap machine, it is characterized in that, described first net ring (11) is by the first strong point (P1a, P1b) at least it is supported on and includes horizontally and vertically supporting beam (V1a, V1b) on the first framework (F1), described second net ring (21) is by the second strong point (P2a, P2b) at least it is supported on and includes horizontally and vertically supporting beam (V2a, V2b) on the second framework (F2), the horizontal shore of the horizontal shore of described first framework (F1) and described second framework (F2) is in identical level height.
7. the forming section of paper machine according to claim 4 or 5 or lap machine, it is characterized in that, described first net ring (11) is by the first strong point (P1a, P1b) at least it is supported on and includes horizontally and vertically supporting beam (V1a, V1b) on the first framework (F1), described second net ring (21) is by the second strong point (P2a, P2b) at least it is supported on and includes horizontally and vertically supporting beam (V2a, V2b) on the second framework (F2), the horizontal shore of the horizontal shore of described first framework (F1) and described second framework (F2) is in identical level height.
8. the forming section of paper machine according to claim 7 or lap machine, it is characterized in that, described additional net ring (31,41,51) is supported on by additional support point (P3a, P3b) in the additional frame (F3) including horizontally and vertically supporting beam (V3a, V3b), and described additional support point (P3a, P3b) for being connected to described first framework (F1) and/or described second framework (F2) by described additional frame (F3).
9. the forming section of paper machine according to claim 4 or 5 or lap machine, it is characterized in that, described first slewing rollers (13) are supported on the first swing arm (13a) and above and are arranged on upper position when working in first pair of wet end (T1).
10. the forming section of paper machine according to claim 4 or 5 or lap machine, it is characterized in that, described second slewing rollers (23) are supported on the second swing arm (23a) and above and are arranged on upper position when working in described first pair of wet end (T1) or second pair of wet end (T2).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/FI2012/050419 WO2013160528A1 (en) | 2012-04-27 | 2012-04-27 | Forming section |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104246066A CN104246066A (en) | 2014-12-24 |
| CN104246066B true CN104246066B (en) | 2016-07-20 |
Family
ID=49482262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280072587.6A Expired - Fee Related CN104246066B (en) | 2012-04-27 | 2012-04-27 | Forming section |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2841644B1 (en) |
| CN (1) | CN104246066B (en) |
| WO (1) | WO2013160528A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2838641A1 (en) * | 1977-09-06 | 1979-03-08 | Beloit Walmsley Ltd | MACHINE FOR PRODUCING SINGLE-LAYERED OR TWO-LAYERED PAPER WEB |
| CN85105202A (en) * | 1985-07-08 | 1987-01-14 | 阿尔斯特罗姆公司 | Method for manufacturing multilayer board |
| CN1042744A (en) * | 1988-11-15 | 1990-06-06 | 维美德纸张机械公司 | The building mortion of forming paper web |
| CN1112622A (en) * | 1993-07-15 | 1995-11-29 | 三菱重工业株式会社 | Apparatus for forming layered paper |
| FI121147B (en) * | 2008-06-27 | 2010-07-30 | Metso Paper Inc | Pre-press, web forming part and plant for manufacturing multi-layer web |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2003952A (en) * | 1977-09-06 | 1979-03-21 | Beloit Walmsley Ltd | Improvements relating to forming machines for paper webs |
| DE4117597A1 (en) * | 1991-05-29 | 1992-12-03 | Voith Gmbh J M | DOUBLE SCREEN FOR A PAPER MACHINE |
| FI99033C (en) * | 1993-05-18 | 1997-09-25 | Valmet Paper Machinery Inc | Paper forming web forming section |
| JP3244911B2 (en) * | 1994-01-28 | 2002-01-07 | 三菱重工業株式会社 | Twin wire former for paper machine |
| FI20075851L (en) * | 2007-11-28 | 2009-05-29 | Metso Paper Inc | Molding part |
-
2012
- 2012-04-27 CN CN201280072587.6A patent/CN104246066B/en not_active Expired - Fee Related
- 2012-04-27 WO PCT/FI2012/050419 patent/WO2013160528A1/en active Application Filing
- 2012-04-27 EP EP12875491.8A patent/EP2841644B1/en not_active Not-in-force
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2838641A1 (en) * | 1977-09-06 | 1979-03-08 | Beloit Walmsley Ltd | MACHINE FOR PRODUCING SINGLE-LAYERED OR TWO-LAYERED PAPER WEB |
| CN85105202A (en) * | 1985-07-08 | 1987-01-14 | 阿尔斯特罗姆公司 | Method for manufacturing multilayer board |
| CN1042744A (en) * | 1988-11-15 | 1990-06-06 | 维美德纸张机械公司 | The building mortion of forming paper web |
| CN1112622A (en) * | 1993-07-15 | 1995-11-29 | 三菱重工业株式会社 | Apparatus for forming layered paper |
| FI121147B (en) * | 2008-06-27 | 2010-07-30 | Metso Paper Inc | Pre-press, web forming part and plant for manufacturing multi-layer web |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2841644B1 (en) | 2016-11-23 |
| EP2841644A4 (en) | 2015-12-09 |
| WO2013160528A1 (en) | 2013-10-31 |
| EP2841644A1 (en) | 2015-03-04 |
| CN104246066A (en) | 2014-12-24 |
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