阅读说明：本技术 一种压辊间横幅压区压力检测装置及方法 (Pressure detection device and method for banner press area between press rolls ) 是由 宋留 韩冲 杜国良 杨文恒 于 2021-06-29 设计创作，主要内容包括：本发明公开了一种压辊间横幅压区压力检测装置及方法：压辊的压区两侧分别为操作侧、传动侧,操作侧设置卷纸器,传动侧设置纸轴,所述卷纸器的中心轴与所述纸轴的中心轴平行；所述纸轴裹有三联纸,所述三联纸固定有辅助装置,所述卷纸器设置有辅助固定装置,所述辅助装置用于与所述辅助固定装置连接；上下挤压的压辊分开,所述辅助装置与所述辅助固定装置连接,所述卷纸器卷动,辅助装置带动所述三联纸在所述压区铺开,上下两侧的压辊合拢挤压三联纸,三联纸的第二页留下压辊的压痕。本发明能够方便快捷的对压辊压区横幅压力进行检测。(The invention discloses a device and a method for detecting pressure of a banner nip between compression rollers, wherein the device comprises the following steps: the two sides of a press area of the press roller are respectively an operation side and a transmission side, the operation side is provided with a paper winder, the transmission side is provided with a paper shaft, and the central shaft of the paper winder is parallel to the central shaft of the paper shaft; the paper roll is wrapped with triple-link paper, an auxiliary device is fixed on the triple-link paper, and the paper winder is provided with an auxiliary fixing device which is used for being connected with the auxiliary fixing device; the upper and lower pressing rollers are separated, the auxiliary device is connected with the auxiliary fixing device, the paper winder rolls, the auxiliary device drives the triple-link paper to spread out in the press area, the upper and lower pressing rollers are folded to press the triple-link paper, and the second page of the triple-link paper leaves the impression of the pressing rollers. The invention can conveniently and rapidly detect the banner pressure of the press roll nip.)

1. An inter-press roll banner nip pressure detection apparatus characterized in that: the two sides of a press area of the press roller are respectively an operation side and a transmission side, the operation side is provided with a paper winder, the transmission side is provided with a paper shaft, and the paper winder is parallel to the paper shaft;

the paper roll is wrapped with triple-link paper, an auxiliary device is fixed on the triple-link paper, and the paper winder is provided with an auxiliary fixing device; the auxiliary device is used for being connected with the auxiliary fixing device;

the device is also provided with a traction device, and the traction device comprises a sliding shaft parallel to the central shaft of the press roller and a sliding block sliding along the sliding shaft; the auxiliary device is movably connected with the sliding block, and the sliding block pulls the fixing device to move towards the paper winder;

the upper and lower extruded press rolls are separated, the auxiliary device is connected with the auxiliary fixing device, the paper winder rolls, the auxiliary device drives the triple-link paper to spread out in the press area, the upper and lower press rolls are folded to extrude the triple-link paper, and the second page of the triple-link paper leaves the impression of the press rolls.

2. The apparatus for detecting a banner nip pressure between rolls according to claim 1, wherein: still include cleaning device, cleaning device is including setting up sprinkler, drying device on the sliding block.

3. The apparatus for detecting a banner nip pressure between rolls as claimed in claim 2, wherein: the spraying device comprises a water nozzle and a water valve; the water valve controls the water nozzle, the water valve is opened, and the water nozzle sprays liquid to the compression roller.

4. The apparatus for detecting a banner nip pressure between rolls as claimed in claim 2, wherein: the drying device comprises an air nozzle and an air valve; the air valve controls the air nozzle, the air valve is opened, and the air nozzle sprays air to the press roller.

5. The apparatus for detecting a banner nip pressure between rolls as claimed in claim 2, wherein: the sliding block moves from the operation side to the transmission side, and the spraying device is started; the sliding block moves from the transmission side to the operation side, and the drying device is started.

6. The apparatus for detecting a banner nip pressure between rolls as claimed in claim 2, wherein: the tail end of the transmission shaft at one side of the operation side is provided with an operation side stopper, and the tail end of the transmission side is provided with a transmission side stopper; the sliding block moves between the operation side limiter and the transmission side limiter.

7. The apparatus for detecting a banner nip pressure between rolls according to claim 1, wherein: the auxiliary device is an auxiliary rope.

8. The apparatus for detecting a banner nip pressure between rolls according to claim 7, wherein: the auxiliary ropes comprise two ropes which are respectively fixed on two sides of the triple-link paper.

9. The apparatus for detecting a banner nip pressure between rolls according to claim 1, wherein: waterproof films are covered on the upper surface and the lower surface of the three-link paper.

10. A method of detecting a banner nip pressure between rolls, comprising the steps of:

the upper and lower press rolls are separated, and the press area is opened;

the auxiliary device is connected with the sliding block, the sliding block moves from the operation side to the transmission side along the sliding shaft, and the spraying device is started; the sliding block is moved to the transmission side, and the spraying device is closed; separating the auxiliary device from the sliding block and connecting the auxiliary device with an auxiliary fixing device;

the sliding block moves from the transmission side to the operation side, and the drying device is started; the sliding block is moved to the operation side, the drying device is closed, the paper winder is opened, the auxiliary rolling device is rolled, and the paper roll releases the three-link paper and spreads in the press area;

folding the upper and lower press rollers, closing the press area, and extruding the triple-link paper by the press rollers for a preset time;

and judging whether the pressure of the press area is uniform or not according to the indentation of the second page of the three-link paper.

Technical Field

The invention relates to the technical field of papermaking, in particular to a device and a method for detecting pressure of a banner nip between compression rollers.

Background

In the papermaking process, the formed wet paper needs to be squeezed and dewatered by a press part, and whether the horizontal line pressure of each point of a press area of a press roll is consistent or not is an important influence factor for determining whether the horizontal moisture and the thickness of the paper are uniform or not. Generally, a paper mill is required to carry a professional pressure detection instrument by a manufacturer equipment maintainer for performing a nip pressure test, and the test is complicated and high in cost.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is to provide a device for conveniently and quickly detecting the pressure of the cross web of the press roll nip.

In order to solve the technical problem, the invention provides a device for detecting the pressure of a banner nip between compression rollers, wherein the two sides of the nip of the compression rollers are respectively an operation side and a transmission side, the operation side is provided with a paper winder, the transmission side is provided with a paper shaft, and the paper winder is parallel to the paper shaft;

the paper roll is wrapped with triple-link paper, an auxiliary device is fixed on the triple-link paper, and the paper winder is provided with an auxiliary fixing device; the auxiliary device is used for being connected with the auxiliary fixing device;

the device is also provided with a traction device, and the traction device comprises a sliding shaft parallel to the central shaft of the press roller and a sliding block sliding along the sliding shaft; the auxiliary device is movably connected with the sliding block, and the sliding block pulls the fixing device to move towards the paper winder;

the upper and lower extruded press rolls are separated, the auxiliary device is connected with the auxiliary fixing device, the paper winder rolls, the auxiliary device drives the triple-link paper to spread out in the press area, the upper and lower press rolls are folded to extrude the triple-link paper, and the second page of the triple-link paper leaves the impression of the press rolls.

As a preferable mode of the present invention, the cleaning device further includes a spraying device and a drying device provided on the sliding block.

As a preferred mode of the present invention, the spraying device comprises a water nozzle and a water valve; the water valve controls the water nozzle, the water valve is opened, and the water nozzle sprays liquid to the compression roller.

As a preferred mode of the present invention, the drying device includes an air nozzle and an air valve; the air valve controls the air nozzle, the air valve is opened, and the air nozzle sprays air to the press roller.

As a preferable mode of the present invention, the slide block is moved from the operation side to the driving side, and the spraying device is turned on; the sliding block moves from the transmission side to the operation side, and the drying device is started.

As a preferred mode of the present invention, the transmission shaft is provided with an operation-side stopper at the end of the operation-side, and a transmission-side stopper at the end of the transmission-side; the sliding block moves between the operation side limiter and the transmission side limiter.

In a preferred embodiment of the present invention, the auxiliary device is an auxiliary rope.

In a preferred embodiment of the present invention, the auxiliary ropes include two auxiliary ropes fixed to both sides of the triple-link paper.

In a preferred embodiment of the present invention, the upper and lower surfaces of the triplex paper are covered with waterproof films.

A method of detecting a cross-web nip pressure between press rolls, comprising the steps of:

the upper and lower press rolls are separated, and the press area is opened;

the auxiliary device is connected with the sliding block, the sliding block moves from the operation side to the transmission side along the sliding shaft, and the spraying device is started; the sliding block is moved to the transmission side, and the spraying device is closed; separating the auxiliary device from the sliding block and connecting the auxiliary device with an auxiliary fixing device;

the sliding block moves from the transmission side to the operation side, and the drying device is started; the sliding block is moved to the operation side, the drying device is closed, the paper winder is opened, the auxiliary rolling device is rolled, and the paper roll releases the three-link paper and spreads in the press area;

folding the upper and lower press rollers, closing the press area, and extruding the triple-link paper by the press rollers for a preset time;

and judging whether the pressure of the press area is uniform or not according to the indentation of the second page of the three-link paper.

Compared with the prior art, the technical scheme of the invention has the following advantages:

according to the paper machine press roller banner pressure detection device provided by the invention, a high-price professional pressure sensor system and professional testers are not needed, the three-link paper is used for testing and evaluating the pressure in the pressing section, the actual operation is direct and reliable, and the test cost is saved. Printing paper is directly sent to the transmission side by removing the slider simultaneously, avoids getting into the compression roller region because of beating printing paper transmission problem personnel, reduces personnel's operation risk.

Drawings

In order that the present disclosure may be more readily and clearly understood, reference will now be made in detail to the present disclosure, examples of which are illustrated in the accompanying drawings.

Fig. 1 is a schematic view of a device for detecting the pressure of a cross-web of a papermachine roll according to the invention.

Fig. 2 is a side view of the pulling device and press roll of the present invention.

Fig. 3 is a schematic top view of the drawing device of the present invention along with a paper spool and a paper winder.

The specification reference numbers indicate: 1. the paper winding machine comprises a paper winder, 2 paper shafts, 21 triple paper, 22 auxiliary ropes, 3 traction devices, 31 sliding shafts, 32 sliding blocks, 4 compression rollers, 5 cleaning devices, 51 water nozzles, 52 air nozzles, 6 operation side limiters, 7 transmission side limiters and 8 nip planes.

Detailed Description

The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "second" or "first" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features, or indirectly contacting the first and second features through intervening media. Furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements does not include a limitation to the listed steps or elements but may alternatively include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Referring to fig. 1-3, according to the device for detecting the pressure of the banner nip between the press rolls 4, two sides of the nip of the press roll 4 are an operating side and a transmission side respectively, the operating side is provided with a paper winder 1, the transmission side is provided with a paper shaft 2, and the paper winder 1 is parallel to the paper shaft 2.

The two press rollers 4 are arranged up and down, and the two press rollers 4 apply force to and extrude the paper in the middle. The central axes of the paper winder 1 and the paper shaft 2 are perpendicular to the central axis of the press roller 4. The paper winder 1 and the paper shaft 2 are respectively arranged on two sides of the press roller 4.

The paper roll 2 is wrapped by the triple paper 21, the triple paper 21 is fixed with an auxiliary device, and the paper winder 1 is provided with an auxiliary fixing device. The auxiliary device is used for being connected with the auxiliary fixing device. The triplex paper 21 is a stylus type printing paper. The auxiliary device can be a telescopic or other device fixed with the triple paper 21 for realizing traction. The auxiliary fixing device can be a hook for connecting the auxiliary device with the auxiliary fixing device. After the auxiliary device is connected, the paper winder 1 rotates to pull and spread the three-link paper 21 wrapped on the paper shaft 2 to the nip through the pulling of the auxiliary device.

As an embodiment, the length of the auxiliary device is at least the longitudinal length of the press roll 4.

A traction device 3 is also provided, said traction device 3 comprising a sliding shaft 31 parallel to the central axis of said pressure roller 4 and a sliding block 32 sliding along said sliding shaft 31. The auxiliary device is movably connected with the sliding block 32, and the sliding block 32 draws the fixing device to move towards the paper winder 1.

The sliding shaft 31 is parallel to the press roll 4 and may in particular be arranged in the nip plane 8. The slide block 32 is moved left and right along the slide shaft 31. The sliding block 32 may be provided with fixing means such as hooks, the auxiliary means may be connected to the sliding block 32 by the fixing means, and the sliding block 32 pulls the auxiliary means to move toward the sheet winder 1.

The press rolls 4 pressed up and down are separated, i.e. the nip is opened. The auxiliary device is connected with the auxiliary fixing device, the paper winder 1 rolls, the auxiliary device drives the triple paper 21 to be spread out in the press area, the press rollers 4 on the upper side and the lower side are folded to extrude the triple paper 21, and the second page of the triple paper 21 leaves an impression of the press rollers 4. And indirectly acquiring the pressing position and the pressing strength of the pressing roller 4 according to the indentation of the second page of the three-link paper 21, and judging whether the pressure of the pressing roller 4 is uniform.

Preferably, the cleaning device 5 is further included, and the cleaning device 5 includes a spraying device and a drying device which are arranged on the sliding block 32. The cleaning device 5 is used for cleaning the behavior of the press roll 4.

The sprinkler includes a water nozzle 51 and a water valve. The water valve controls the water nozzle 51, the water valve is opened, and the water nozzle 51 sprays liquid to the press roll 4. After the water valve is opened, the water nozzle 51 sprays high-pressure water to remove residual pulp on the surface of the compression roller 4 so as to avoid the influence of the residual pulp on the impression display of the printing paper. As an embodiment, the water nozzles 51 may be high pressure fan water nozzles 51. In one embodiment, the water nozzles 51 may adjust the spray angle to clean the upper and lower rolls 4 at various angles. The water spray nozzle 51 may be connected to a cleaning water storage tank.

The drying means comprises an air nozzle 52 and an air valve. The air valve controls the air nozzle 52, the air valve is opened, and the air nozzle 52 sprays air to the press roll 4. After the air valve is opened, the air nozzle 52 ejects compressed air to form an air knife to clean the roller again, so that the surface of the roller is kept dry. In one embodiment, the air nozzle 52 may adjust the spray angle to clean the upper and lower rolls 4 at various angles. The nozzle 52 can be connected to a compressed air storage tank.

The slide 32 is moved from the operating side to the drive side and the sprinkler is opened. The slide 32 is moved from the drive side to the operating side and the drying device is switched on.

Preferably, the transmission shaft is provided with an operation side stopper 6 at the end of the operation side, and a transmission side stopper 7 at the end of the transmission side. The slide block 32 moves between the operation-side stopper 6 and the transmission-side stopper 7. The operation-side stopper 6 and the transmission-side stopper 7 are used to limit the range of movement of the slide block 32.

Preferably, the auxiliary device is an auxiliary rope 22. The auxiliary ropes 22 include two ropes, which are respectively fixed to both sides of the triple paper 21. The auxiliary ropes 22 can assist the spreading of the three-ply paper 21, and the two sides fixed on the three-ply paper 21 can apply force to the three-ply paper 21 uniformly, so that the breakage of the three-ply paper 21 is avoided.

Preferably, the upper and lower surfaces of the triple paper 21 are covered with waterproof films. The waterproof film is wound on the triple paper 21 to protect the triple paper 21 from water, so that the triple paper 21 is prevented from being polluted by residual pulp and water on the compression roller 4. The waterproof film is flatly covered on the surface of the triple paper 21, so that the crease is prevented from influencing the impression of the pressing roller 4 on the triple paper 21.

In practice, a method for detecting a web nip pressure between press rolls 4 comprises the steps of:

the upper and lower rolls 4 are separated and the nip is opened.

The auxiliary device is connected to a slide 32, which slide 32 is moved along a slide axis 31 from the operating side to the drive side, while the spraying device is opened. Slide 32 to the drive side and the sprinkler is closed. The auxiliary device is disengaged from the sliding block 32 and connected to the auxiliary fixture.

The slide 32 is moved from the drive side to the operating side and the drying device is switched on. The slide 32 to the operating side, the drying device is closed, the winder 1 is opened, the winding aid, the reel release triplex 21 is laid out in the nip.

The upper and lower press rollers 4 are folded, the nip is closed, and the press rollers 4 press the tripled paper 21 for a preset time.

Whether the pressure of the nip is uniform is judged according to the impression of the second page of the tripled paper 21.

Specifically, the upper and lower press rollers 4 are separated to open the nip, and the worker connects the auxiliary device to the slide block 32. The spraying device cleans the upper and lower compression rollers 4, and residual pulp on the surfaces of the compression rollers 4 is removed, so that the influence of the residual pulp on the impression display of the printing paper is avoided.

After the slider 32 has moved to the drive side, the sprinkler is closed. At the same time, the auxiliary device is disengaged from the sliding block 32 and connected to the auxiliary fixture.

The slide 32 is moved from the drive side to the operating side and the drying device cleans the rollers again with the aid of an air knife formed by compressed air, so that the roller surface remains dry.

After the slide block 32 is moved to the operation side, the drying device is closed. At the same time, the paper winder 1 is opened, the paper winder 1 rolls the auxiliary device connected with the paper winder 1, and the auxiliary device pulls the triple paper 21 to be laid flat in the press area. The winder 1 is closed, and the upper and lower folded press rollers 4 press the triple paper 21.

In one embodiment, the paper winder 1 can continue to roll after the extrusion of the upper and lower press rollers 4 is finished, and the extruded triplex paper 21 is rolled on the paper winder 1, so that the triplex paper is convenient to cut.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the spirit or scope of the invention.