CN114474983A

CN114474983A - Roll paper drying oven

Info

Publication number: CN114474983A
Application number: CN202210104629.5A
Authority: CN
Inventors: 孙增林; 张耀辉; 孙龙涛
Original assignee: Masterwork Group Co Ltd
Current assignee: Masterwork Group Co Ltd
Priority date: 2022-01-28
Filing date: 2022-01-28
Publication date: 2022-05-13

Abstract

The invention provides a web oven, comprising: the drying box I is arranged on the discharge side of the brushing equipment, and a drying assembly I is arranged in the drying box I and used for drying and solidifying the liquid material brushed on the surface of the roll paper; the supporting and guiding structure is arranged on the discharging side of the first drying assembly and is used for supporting and guiding the roll paper; and the drying box II is arranged on the discharge side of the drying box I, and a drying assembly II is arranged inside the drying box II and used for further drying the web after the surface is dried and solidified so as to reduce the paper moisture content of the web. The web oven effectively improves the printing efficiency and the product quality rate.

Description

Roll paper drying oven

Technical Field

The invention belongs to the technical field of product printing, and particularly relates to a web drying oven.

Background

The paper drying method comprises two technical detection indexes of curing of ink or gloss oil on the surface of the paper and reduction of the water content of the paper.

At present, the web drying box is of a hot blowing type, namely hot air is directly sprayed to the surface of paper from the drying box at a high speed to finish drying the paper, and the ink or gloss oil on the surface of the paper of a winding drum can be cured and the water content of the paper can be reduced.

As shown in fig. 1, in the conventional drying structure, the web 6 is a continuous paper, and is supported by a guide roller 7 during drying, and then the web 6 is dried by blowing hot air through a front drying box 10 and a back drying box 9.

The drying structure has the following defects when the printing type roll paper is dried:

1. when the web is dried in the web drying oven, the web 6 needs to be supported by the guide roller 7, and both sides of the web 6 may be coated with varnish, which may cause the varnish on the side of the web 6 contacting the guide roller 7 to scratch;

2. some products require to be higher to the paper moisture content of roll web, require the moisture content of paper to be less than a definite value, and consequently the stoving length that needs the stoving case is longer, and 6 both sides of roll web all arrange positive stoving case 10 and back of the body stoving case 9, and the whole size that can cause equipment is longer, and area is great, and stoving case cost of manufacture is also higher.

Disclosure of Invention

In view of this, the present invention is directed to a web drying oven, so as to solve the problem that when web is dried, a guide roller in the drying oven is likely to cause oil scraping of web paper.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a web oven comprising:

the drying box I is arranged on the discharge side of the brushing equipment, and a drying assembly I is arranged in the drying box I and used for drying and solidifying the liquid material brushed on the surface of the roll paper;

the supporting and guiding structure is arranged on the discharging side of the first drying assembly and is used for supporting and guiding the roll paper;

and the drying box II is arranged on the discharge side of the drying box I, and a drying assembly II is arranged inside the drying box II and used for further drying the web after the surface is dried and solidified so as to reduce the paper moisture content of the web.

Furthermore, the first drying box comprises a first box body, and the first drying assembly comprises a first air box;

and a plurality of air injection openings are distributed on one side of the first air box, which is close to the paper surface of the roll paper, and face to the paper surface of the roll paper.

Furthermore, the number of the first air boxes is more than two, and the more than two air boxes are symmetrically arranged on two sides of the roll paper.

Furthermore, the air box is also provided with an air inlet which is communicated with an air outlet of the hot air circulating device through an air inlet pipeline;

and the first box body is provided with an air outlet which is communicated with an air inlet of the hot air circulating device through an air return pipeline.

Further, the supporting and guiding structure is a supporting and guiding roller.

Furthermore, a connecting pipeline is arranged between the discharge hole of the first drying box and the feed hole of the second drying box.

Further, stoving case two includes box two to and set up in a plurality of deflector rolls of two inboard tops of box and bottom, the web is through a plurality of deflector rolls of top and bottom reciprocal transport about in the box.

Further, the second drying assembly comprises more than one set of bellows structure, each set of bellows structure comprises two bellows, the two bellows are symmetrically arranged on two sides of the web in the width direction, and one side, adjacent to the web, of each bellows is provided with a plurality of air outlets.

Furthermore, two air boxes II of each air box structure are also provided with air inlets, the air inlets are connected with branch pipelines, the branch pipelines of the two air boxes II are connected with the same air inlet pipeline II through a tee joint, and the air inlet pipeline II is connected with an air outlet of a hot air circulating device;

and the second drying box is also provided with an air outlet, and the air outlet is connected with an air inlet of the hot air rotating device through a second air return pipeline.

Furthermore, air valves used for adjusting air pressure and hot air flow are arranged on branches of the two air boxes II.

Compared with the prior art, the web oven has the following beneficial effects:

(1) the web drying oven disclosed by the invention adopts two drying boxes with different functions, wherein the first drying box is used for drying the liquid material on the web surface, and the second drying box is used for drying and reducing the water content of paper; through glazing device and support guide structure cooperation, for the paper provides tension and lets its contactless pass through drying assembly one, can guarantee that the paper of the roll web of stoving incasement does not contact with other objects before the stoving, also can guarantee under the condition that conveying speed improves by a wide margin that the printing face is not scraped the flower, when effectively improving printing efficiency, also improved the product the high quality rate.

(2) According to the roll paper oven, the air injection openings of the first air boxes face the paper surface, and the first air boxes on the two sides adopt the symmetrical structural design, so that synchronous drying and curing can be realized on the two sides while the drying and curing efficiency of the paper surface is effectively improved, the deformation of paper is prevented, and the drying and curing quality is improved.

(3) According to the web drying oven, the air boxes are symmetrically arranged on the two sides of the web in the width direction, and the air outlets are formed in one side, adjacent to the web, of the air box II, so that hot air sprayed out of the air box II can be rapidly sprayed to the running area of the web, and the reduction efficiency of the water content of paper is improved.

(4) According to the web drying oven, the web in the second drying box is conveyed up and down in the box body through the guide rollers at the top and the bottom in a reciprocating mode, the length of a dried paper path can be greatly prolonged in a small space range, the drying time of the web is prolonged on the premise that the running speed of equipment is guaranteed, the volume of the second drying box is greatly reduced, the drying efficiency of the water content of the paper is improved, and the heat loss is effectively reduced.

(5) According to the web drying oven, the first drying box and the second drying box share one set of hot air circulating device, so that the cost input is reduced, and the heat energy utilization rate is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic diagram of a prior art web drying configuration;

FIG. 2 is a diagram of a web oven according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view of a drying box according to the present invention;

FIG. 4 is a sectional view taken along line A-A of FIG. 4 of the drying box of the present invention;

FIG. 5 is a cross-sectional view of a second drying box of the present invention;

FIG. 6 is a sectional view taken along line B-B of FIG. 5 of the second drying box of the present invention.

Description of the drawings:

1. a first drying box; 11. a first box body; 12. a first air box; 13. a first air inlet pipeline; 14. a first air return pipeline; 2. a second drying box; 21. a second box body; 22. a second air box; 23. a branch pipeline; 24. a tee joint; 25. an air valve; 26. a second air inlet pipeline; 27. a second air return pipeline; 3. supporting the guide roll; 4. a hot air circulating device; 5. connecting a pipeline; 6. a web; 7. a guide roller; 8. a glazing device; 9. a back drying box; 10. and (5) drying the box.

Detailed Description

It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", etc. 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 "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.

In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g. as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 2, a web oven includes:

the drying box I1 is arranged on the discharge side of the brushing equipment, and a drying assembly I is arranged in the drying box I and used for drying and solidifying the liquid material brushed on the surface of the roll paper 6;

the squeegee device is not limited to the glossing device 8 in the background art, and the liquid material is not limited to the paper-processing printing material such as ink and varnish described in the background art.

The supporting and guiding structure is arranged on the discharging side of the first drying assembly and is used for supporting and guiding the roll paper 6;

and the drying box II 2 is arranged on the discharging side of the drying box I1, is internally provided with a drying component II and is used for further drying the web 6 after surface drying and curing so as to reduce the paper moisture content of the web 6.

Compared with the prior art, the drying box has the advantages that the two drying boxes with different functions are innovatively adopted, the first drying box 1 is used for drying the liquid material on the paper surface of the roll paper 6, the second drying box 2 is used for drying and reducing the moisture content of the paper, the paper surface of the roll paper 6 in the first drying box 1 can be ensured not to be contacted with other objects before drying through the arrangement of the supporting and guiding structure, the printing surface can be ensured not to be scratched under the condition that the conveying speed is greatly improved, the printing efficiency is effectively improved, and the product quality rate is also improved.

As shown in fig. 3 and 4, the drying box 1 comprises a box body 11, and the drying component 1 comprises a wind box 12;

a plurality of air injection ports are distributed on one side, close to the paper surface of the roll paper 6, of the air box 12, the air injection ports face the paper surface of the roll paper 6, hot air sprayed out of the air injection ports can be guaranteed to be rapidly arranged on the paper surface of the roll paper 6, and efficient drying and solidification of liquid materials such as surface gloss oil are achieved.

The number of the first air boxes 12 is more than two, the first air boxes 12 are symmetrically arranged on two sides of the roll paper 6, the drying and curing device is mainly applied to the roll paper 6 with liquid materials printed on two sides, and the first air boxes 12 are designed in a symmetrical structure, so that synchronous drying and curing can be realized on two sides while the paper surface drying and curing efficiency is effectively improved, paper deformation is prevented, and the drying and curing quality is improved.

The invention can also be applied to drying and curing of the paper surface gloss oil of single-sided printed products.

The first air box 12 is also provided with an air inlet which is communicated with an air outlet of the hot air circulating device 4 through a first air inlet pipeline 13; the first box body 11 is provided with an air outlet, the air outlet is communicated with an air inlet of the hot air circulating device 4 through a first air return pipeline 14, the hot air circulating device 4 is capable of heating air and providing power required by hot air circulation of the drying box at present, and the heat energy utilization rate can be effectively improved through the hot air circulating device 4.

The supporting and guiding structure is a supporting and guiding roller 3, the supporting and guiding roller 3 is a guide roller capable of rotating around a central shaft, and the purpose of the supporting and guiding roller 3 is to ensure that paper is in a tight and flat state before the web 6 is dried and solidified by liquid materials on the paper surface, so that the paper surface is prevented from being scratched due to contact with other supports.

It should be noted that the supporting and guiding roller 3 may be installed inside the first drying box 1 (as shown in fig. 3 and 4) or may be a guiding roller (not shown) installed inside the second drying box 2, and when the supporting and guiding roller 3 is installed inside the second drying box 2, the first drying box 1 needs to adopt a straight-through drying box, that is, paper is conveyed in a straight line, so as to ensure that the paper does not contact with other objects in the paper drying process, and prevent the paper from scratching.

And a connecting pipeline 5 is arranged between the discharge hole of the first drying box 1 and the feed inlet of the second drying box 2.

As shown in fig. 5 and 6, the second drying box 2 includes a second box body 21 and a plurality of guide rollers 7 arranged at the top and the bottom inside the second box body 21, the web 6 is vertically and reciprocally conveyed in the box body through the plurality of guide rollers 7 at the top and the bottom, and the drying paper path length can be greatly prolonged in a small space range, so that the drying time of the web 6 is prolonged on the premise of ensuring the operation speed of the equipment, the volume of the second drying box 2 is greatly reduced, the drying efficiency of the paper is also improved, and the heat loss is also effectively reduced.

Drying assembly two includes bellows structure more than a set of, and every bellows structure of group includes two bellows 22, and two 22 symmetries of two bellows set up in the width direction both sides of roll web 6, and one side that two 22 adjacent roll webs of bellows 6 are equipped with a plurality of air outlets, guarantees that spun hot-blast can spray the operational area to roll web 6 rapidly in two 22 bellows, improves the reduction efficiency of paper moisture content.

The two air boxes II 22 of each air box group structure are also provided with air inlets, the air inlets are connected with branch pipelines 23, the branch pipelines 23 of the two air boxes II 22 are connected with the same air inlet pipeline II 26 through a tee joint 24, and the air inlet pipeline II 26 is connected with an air outlet of the hot air circulating device 4;

the second drying box 2 is also provided with an air outlet, and the air outlet is connected with an air inlet of the hot air rotating device through a second air return pipeline 27.

One set of heated air circulation device 4 of stoving case one 1 and stoving case two 2 sharing has also improved heat utilization rate when having reduced the cost input.

And air valves 25 for adjusting air pressure and hot air flow are arranged on the branches of the two air boxes 22.

Because the pipeline paths from the hot air circulating device 4 to the left and right air boxes two 22 are different, the pressure intensity in the left and right air boxes two 22 is different, and the temperature in the drying box two 2 is different, therefore, the branch pipelines 23 of the tee joint 24 of the drying box two 2 leading to the air boxes two 22 are respectively provided with an air valve 25 for adjusting the air pressure and the hot air flow in the left and right air boxes two 22.

The working principle of the invention is illustrated by taking gloss oil on the web 6 as an example:

after two sides of the web 6 are glazed by glazing equipment 8, firstly, under the condition that the web 6 is not contacted with any other object, a wind box 12 in a drying box 1 is adopted to spray high-speed high-temperature air to quickly solidify the gloss oil on the surface of the web 6, the gloss oil on the web 6 can be contacted with a supporting guide roller 3 without scratching the gloss oil after being solidified, and then the web 6 enters a drying box 2. After the gloss oil on the surface of the roll paper 6 is solidified, wind has little influence on reducing the water content of the paper, so that wind boxes are not arranged on two sides of the gloss oil of the roll paper 6 in the drying box 2, but arranged on two sides of the width direction of the roll paper 6, and the wind boxes 22 are used for uniformly distributing hot air in each area in the drying box 2, so that the temperature uniformity of the roll paper 6 during drying is ensured. The web of paper 6 gets into stoving case two 2 after the stoving case 1 surface drying, leads to the deflector roll 7 of winding arrangement about stoving case two 2 in turn, makes the web of paper 6 can great extension stoving in less space range length of paper way to the drying time of extension web of paper 6 under the prerequisite of guaranteeing equipment operating speed, thereby can effectively reduce the moisture content of web of paper 6.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents, improvements, etc. within the spirit and scope of the present invention.

Claims

1. A web oven, comprising:

and the drying box II is arranged on the discharge side of the drying box I, and a drying assembly II is arranged in the drying box II and used for further drying the web after the surface is dried and solidified so as to reduce the paper moisture content of the web.

2. The web oven of claim 1, wherein: the first drying box comprises a first box body, and the first drying assembly comprises a first air box;

3. The web oven of claim 2, wherein: the number of the first air boxes is more than two, and the more than two air boxes are symmetrically arranged on two sides of the roll paper.

4. The web oven of claim 2, wherein: the air box is also provided with an air inlet which is communicated with an air outlet of the hot air circulating device through an air inlet pipeline;

5. The web oven of claim 1, wherein: the supporting and guiding structure is a supporting and guiding roller.

6. The web oven of claim 1, wherein: and a connecting pipeline is arranged between the discharge hole of the first drying box and the feed inlet of the second drying box.

7. The web oven of claim 1, wherein: and the drying box II comprises a box body II and a plurality of guide rollers arranged at the top and the bottom of the inner side of the box body II, and the roll paper is conveyed in the box body up and down in a reciprocating manner through the plurality of guide rollers at the top and the bottom.

8. The web oven of claim 1, wherein: the second drying assembly comprises more than one set of bellows structure, each set of bellows structure comprises two bellows, the two bellows are symmetrically arranged on two sides of the web in the width direction, and a plurality of air outlets are formed in one side, adjacent to the web, of each bellows.

9. The web oven of claim 8, wherein: the two second air boxes of each set of air box structure are also provided with air inlets which are connected with branch pipelines, the branch pipelines of the two second air boxes are connected with a second air inlet pipeline through a tee joint, and the second air inlet pipeline is connected with an air outlet of a hot air circulating device;

10. The web oven of claim 9, wherein: and air valves for adjusting air pressure and hot air flow are arranged on the branches of the two air boxes II.