CN210315063U - Rewinding calender for papermaking - Google Patents
Rewinding calender for papermaking Download PDFInfo
- Publication number
- CN210315063U CN210315063U CN201920738242.9U CN201920738242U CN210315063U CN 210315063 U CN210315063 U CN 210315063U CN 201920738242 U CN201920738242 U CN 201920738242U CN 210315063 U CN210315063 U CN 210315063U
- Authority
- CN
- China
- Prior art keywords
- roller
- scraper device
- seats
- rewinding
- scraper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000003825 pressing Methods 0.000 claims abstract description 19
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000000576 coating method Methods 0.000 claims abstract description 18
- 238000009718 spray deposition Methods 0.000 claims abstract description 8
- 239000011248 coating agent Substances 0.000 claims description 8
- 230000003746 surface roughness Effects 0.000 claims description 4
- 238000007747 plating Methods 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000003490 calendering Methods 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 244000144992 flock Species 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- Coating Apparatus (AREA)
- Paper (AREA)
Abstract
The utility model relates to a papermaking technical field especially relates to a rewinding plating press of papermaking usefulness, including frame, primary shaft bearing, secondary shaft bearing, last roller, lower roll, be used for pressing the last scraper device of roller, scraper device, first pressurized cylinder down and be used for pressing the second pressurized cylinder of scraper device down. The surfaces of the upper roller and the lower roller are both provided with tungsten carbide coatings formed by spray deposition. Because press the scraper device through first pressurized cylinder, press the roller through last scraper device, press down the scraper device through second pressurized cylinder, press the lower roll through lower scraper device, and then make scraper control nimble. In addition, because the surfaces of the upper roller and the lower roller are provided with the tungsten carbide coatings formed by spray deposition, the tungsten carbide coatings have high hardness, good wear resistance and long grinding period, so that the surface hardness of the roller shell is good, the contact surface is a plane, the problem of nonuniform pressure can be avoided, and the paper tightness of the outlet nip is consistent.
Description
Technical Field
The utility model relates to a papermaking technical field especially relates to a rewinding plating press of papermaking usefulness.
Background
In the papermaking process, paper or board containing a certain amount of moisture is processed using a calender to improve the smoothness and gloss of the paper and to control the thickness of the paper or board to some extent. At present, the development of an online calendering technology continuously influences the global papermaking process, and calendering equipment is important technical equipment for finishing the surface of paper in the papermaking process.
The rewinding calender in the prior art has the following defects: (1) the tightness of the exit nip is not uniform. In plants, chilled cast iron rolls are used, when the resilient roll is pressed against it at a certain line pressure, the nip width becomes much wider due to the deformation of both sides than when the two hard rolls are in contact, the contact surface is no longer a plane, and the pressure is not uniform if there are uneven patches in the sheet. When too many sheets, high-thickness patches or flocks enter the nip, where the pressure will be at its most and the surrounding areas are relatively low, resulting in inconsistent tightness of the sheet after compression. (2) The surface hardness of the roller shell is not enough. (3) The blade control is not flexible enough.
Disclosure of Invention
An object of the utility model is to provide a rewinding plating press of papermaking usefulness to the weak point among the prior art, this rewinding plating press of papermaking usefulness has the degree of tightness of paper of play nip unanimously, and roll shell surface hardness is good, and the nimble advantage of scraper control.
In order to achieve the above purpose, the present invention is achieved by the following technical solutions.
The rewinding calender for papermaking comprises a rack, a first bearing seat and a second bearing seat which are arranged at two ends of the rack, an upper roller which is fixedly connected through the two first bearing seats, a lower roller which is fixedly connected through the two second bearing seats, an upper scraper device used for pressing the upper roller, a lower scraper device used for pressing the lower roller, a first pressurizing air cylinder used for pressing the upper scraper device and a second pressurizing air cylinder used for pressing the lower scraper device;
the air cylinder device further comprises two air cylinder seats and two fixing seats, wherein the two air cylinder seats and the two fixing seats are arranged on the rack, one ends of the first pressurizing air cylinder and the second pressurizing air cylinder are respectively fixed to the corresponding air cylinder seats, and the other ends of the first pressurizing air cylinder and the second pressurizing air cylinder are respectively fixed to the corresponding fixing seats; the upper scraper device and the lower scraper device are respectively fixed on the corresponding fixed seats;
and the surfaces of the upper roller and the lower roller are both provided with tungsten carbide coatings formed by spray deposition.
The upper scraper device and the lower scraper device comprise scraper seats fixed on the fixing seats, scrapers fixed on the scraper seats and top contact blocks arranged on the scrapers.
The scraper seat is set to be a cylindrical scraper seat.
The top contact block is a cuboid-shaped top contact block.
The fixing seat comprises a first supporting arm and a second supporting arm which are connected with each other and form an included angle.
The included angle between the first support arm and the second support arm is set to be an obtuse angle.
The upper roll is fixed on the first bearing seats at two ends through a rotating shaft.
The lower roller is fixed on the second bearing seats at two ends through a rotating shaft.
The thickness of the tungsten carbide coating is set to be 0.1 mm-0.2 mm.
The surface roughness of the tungsten carbide coating is 0.04-0.06 mu m.
The utility model has the advantages that:
(1) the utility model provides a pair of rewinding plating press of papermaking usefulness, including the frame, set up in the primary shaft bearing and the secondary shaft bearing at frame both ends, through two primary shaft bearing fixed connection's last roller, through two secondary shaft bearing fixed connection's lower roll, be used for pressing the last scraper device of roller, be used for pressing the lower scraper device of lower roll, be used for pressing the first pressurized cylinder of scraper device and be used for pressing the second pressurized cylinder of lower scraper device. The surfaces of the upper roller and the lower roller are both provided with tungsten carbide coatings formed by spray deposition. Because press the scraper device through first pressurized cylinder, press the roller through last scraper device, press down the scraper device through second pressurized cylinder, press the lower roll through lower scraper device, and then make scraper control nimble. In addition, because the surfaces of the upper roller and the lower roller are provided with the tungsten carbide coatings formed by spray deposition, the tungsten carbide coatings have high hardness, good wear resistance and long grinding period, so that the surface hardness of the roller shell is good, the contact surface is a plane, the problem of nonuniform pressure can be avoided, and the paper tightness of the outlet nip is consistent.
(2) The utility model provides a pair of rewinding plating press of papermaking usefulness has simple structure, low in production cost to can be applicable to large-scale production's characteristics.
Drawings
Fig. 1 is a schematic structural diagram of a rewinding calender for papermaking according to the present invention.
Fig. 2 is a schematic structural view of another viewing angle of a rewinding calender for papermaking according to the present invention.
Reference numerals:
a frame 1;
a first bearing housing 2;
a second bearing housing 3;
an upper roller 4, a rotating shaft 41;
a lower roller 5, a rotating shaft 51;
a doctor blade mounting device 6;
a lower scraper device 7;
a first pressurizing cylinder 8;
a second pressurizing cylinder 9;
a cylinder block 10;
a fixed seat 11, a first support arm 101 and a second support arm 102;
a scraper seat 12;
a scraper 13;
and a top contact block 14.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is made in conjunction with the accompanying drawings and embodiments to explain the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
A rewinding calender for papermaking of the present embodiment, as shown in fig. 1 and 2, includes a frame 1, a first bearing housing 2 and a second bearing housing 3 disposed at two ends of the frame 1, an upper roll 4 fixedly connected by the two first bearing housings 2, a lower roll 5 fixedly connected by the two second bearing housings 3, an upper blade device 6 for pressing the upper roll 4, a lower blade device 7 for pressing the lower roll 5, a first pressurizing cylinder 8 for pressing the upper blade device 6, and a second pressurizing cylinder 9 for pressing the lower blade device 7; the air cylinder device further comprises two air cylinder seats 10 and two fixing seats 11 which are arranged on the rack 1, one ends of the first pressurizing air cylinder 8 and the second pressurizing air cylinder 9 are respectively fixed on the corresponding air cylinder seats 10, and the other ends of the first pressurizing air cylinder 8 and the second pressurizing air cylinder 9 are respectively fixed on the corresponding fixing seats 11; the upper scraper device 6 and the lower scraper device 7 are respectively fixed on the corresponding fixed seats 11; wherein the surfaces of the upper and lower rolls 4 and 5 are each provided with a tungsten carbide coating layer formed by spray deposition. Since the upper scraper device 6 is pressed through the first pressurizing cylinder 8, the upper roller 4 is pressed through the upper scraper device 6, the lower scraper device 7 is pressed through the second pressurizing cylinder 9, and the lower roller 5 is pressed through the lower scraper device 7, the scraper is flexibly controlled. In addition, because the surfaces of the upper roller 4 and the lower roller 5 are both provided with tungsten carbide coatings formed by spray deposition, the tungsten carbide coatings have high hardness, good wear resistance and long grinding period, so that the surface hardness of the roller shell is good, the contact surface is a plane, the problem of nonuniform pressure can be avoided, and the paper tightness of the pressure outlet area is consistent.
In this embodiment, the upper scraper device 6 and the lower scraper device 7 each include a scraper seat 12 fixed on the fixing seat 11, a scraper 13 fixed on the scraper seat 12, and a contact block 14 disposed on the scraper 13. Can firmly be fixed in fixing base 11 with upper scraper device 6 and lower scraper device 7 through scraper seat 12, first pressurized cylinder 8 and second pressurized cylinder 9 press scraper 13 through top contact block 14, and then do benefit to tightly pressing scraper 13 in last roller 4 and lower roll 5, further make scraper control nimble.
In this embodiment, the scraper base 12 is provided as a cylindrical scraper base 12, and the cylindrical scraper base 12 does not affect the circular arc-shaped end portions of the first pressurizing cylinder 8 and the second pressurizing cylinder 9 to press the contact block 14.
In the present embodiment, the top contact block 14 is provided as the rectangular parallelepiped top contact block 14, the rectangular parallelepiped top contact block 14 facilitates the circular arc end portions of the first and second pressurizing cylinders 8 and 9 to press the top contact block 14, and the rectangular parallelepiped top contact block 14 easily presses the scraper 13.
In this embodiment, the fixing base 11 includes a first arm 101 and a second arm 102 connected to each other and forming an included angle. The first arm 101 and the second arm 102 forming an angle facilitate the fixing, wherein the first arm 101 is fixed to the frame 1 and the second arm 102 is used for fixing the upper doctor blade unit 6 and the first pressure cylinder 8 or for fixing the lower doctor blade unit 7 and the second pressure cylinder 9.
In this embodiment, the included angle between the first arm 101 and the second arm 102 is set to be an obtuse angle, which is more favorable for fixing.
In this embodiment, the upper roller 4 is fixed to the first bearing blocks 2 at both ends through the rotating shaft 41, so that the upper roller 4 is easy to rotate.
In this embodiment, the lower roller 5 is fixed to the second bearing blocks 3 at both ends via the rotating shaft 51, so that the lower roller 5 can be easily rotated.
In this embodiment, the thickness of the tungsten carbide coating is set to 0.1mm to 0.2mm, and the tungsten carbide coating with the thickness can well improve the hardness and the wear resistance of the upper roller 4 and the lower roller 5.
In the embodiment, the surface roughness of the tungsten carbide coating is 0.04-0.06 μm, the tungsten carbide coating with the surface roughness can obviously change the characteristics of roller smoothness and the like, the roller surface is nearly a mirror surface, the surface quality of finished paper such as smoothness, glossiness and the like is greatly improved, and the appearance quality of the finished paper is well improved.
It should be finally noted that the above embodiments are only intended to illustrate the technical solution of the present invention and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced with other equivalents without departing from the spirit and scope of the technical solution of the present invention.
Claims (10)
1. A rewinding calender for papermaking is characterized in that: the device comprises a rack, a first bearing seat and a second bearing seat which are arranged at two ends of the rack, an upper roller which is fixedly connected through the two first bearing seats, a lower roller which is fixedly connected through the two second bearing seats, an upper scraper device used for pressing the upper roller, a lower scraper device used for pressing the lower roller, a first pressurizing air cylinder used for pressing the upper scraper device and a second pressurizing air cylinder used for pressing the lower scraper device;
the air cylinder device further comprises two air cylinder seats and two fixing seats, wherein the two air cylinder seats and the two fixing seats are arranged on the rack, one ends of the first pressurizing air cylinder and the second pressurizing air cylinder are respectively fixed to the corresponding air cylinder seats, and the other ends of the first pressurizing air cylinder and the second pressurizing air cylinder are respectively fixed to the corresponding fixing seats; the upper scraper device and the lower scraper device are respectively fixed on the corresponding fixed seats;
and the surfaces of the upper roller and the lower roller are both provided with tungsten carbide coatings formed by spray deposition.
2. A rewinding calender for papermaking according to claim 1, characterised in that: the upper scraper device and the lower scraper device comprise scraper seats fixed on the fixing seats, scrapers fixed on the scraper seats and top contact blocks arranged on the scrapers.
3. A rewinding calender for papermaking according to claim 2, characterised in that: the scraper seat is set to be a cylindrical scraper seat.
4. A rewinding calender for papermaking according to claim 2, characterised in that: the top contact block is a cuboid-shaped top contact block.
5. A rewinding calender for papermaking according to claim 1, characterised in that: the fixing seat comprises a first supporting arm and a second supporting arm which are connected with each other and form an included angle.
6. A rewinding calender for papermaking according to claim 5, characterised in that: the included angle between the first support arm and the second support arm is set to be an obtuse angle.
7. A rewinding calender for papermaking according to claim 1, characterised in that: the upper roll is fixed on the first bearing seats at two ends through a rotating shaft.
8. A rewinding calender for papermaking according to claim 1, characterised in that: the lower roller is fixed on the second bearing seats at two ends through a rotating shaft.
9. A rewinding calender for papermaking according to claim 1, characterised in that: the thickness of the tungsten carbide coating is set to be 0.1 mm-0.2 mm.
10. A rewinding calender for papermaking according to claim 1, characterised in that: the surface roughness of the tungsten carbide coating is 0.04-0.06 mu m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920738242.9U CN210315063U (en) | 2019-05-21 | 2019-05-21 | Rewinding calender for papermaking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920738242.9U CN210315063U (en) | 2019-05-21 | 2019-05-21 | Rewinding calender for papermaking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210315063U true CN210315063U (en) | 2020-04-14 |
Family
ID=70140071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920738242.9U Expired - Fee Related CN210315063U (en) | 2019-05-21 | 2019-05-21 | Rewinding calender for papermaking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210315063U (en) |
-
2019
- 2019-05-21 CN CN201920738242.9U patent/CN210315063U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200414 |