Drying oven for printing and embossing all-in-one machine

Abstract

The invention relates to a drying oven for a printing and embossing all-in-one machine, which comprises a plurality of drying devices communicated front and back along the horizontal direction, an upper air bellow and a lower air bellow, a drying channel is arranged between the upper air bellow and the lower air bellow, an upper air blowing nozzle is arranged at the bottom of the upper air bellow, and a lower air blowing nozzle is arranged at the top of the lower air bellow; the wind shield group comprises an upper wind shield arranged below the upper air bellow and a lower wind shield arranged above the lower air bellow, and the wind shield group horizontally reciprocates; through shielding of the upper wind blocking strip or the lower wind blocking strip, wind pressure difference occurs on the to-be-dried part; the wind shield group is arranged in the drying channel, so that the wind pressure of the air outlets of the upper air bellow and the lower air bellow blowing to the to-be-dried piece is changed, and the wind pressure acting on the upper side and the lower side of the to-be-dried piece at the same position is quickly and alternately changed, thereby causing the to-be-dried piece to slightly vibrate up and down, and meanwhile, the vortexes formed on the upper side and the lower side of the to-be-dried piece are enhanced; the solvent is accelerated to be separated from the to-be-dried part, the drying efficiency is improved, and the energy consumption is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of printing equipment, and in particular relates to an oven for a printing and embossing integrated machine. Background Art

[0002] During the paper printing process, the printing and embossing machine needs to continuously dry the paper at a faster speed to meet the requirements of high-speed printing. Currently, vertical or horizontal ovens are used to dry the paper after printing. How to improve drying efficiency and reduce energy consumption while ensuring drying quality is a problem worthy of study by printing industry practitioners.

[0003] A Chinese patent with the announcement number CN204586098U and the title "A fast-printing wallpaper printing machine" discloses a fast-printing wallpaper printing machine, in which an upper bellows is arranged above a horizontal oven, a lower bellows is arranged below, and a passage is in the middle. The lower bellows and the upper bellows are arranged symmetrically with the passage as the axis, and the upper bellows and the lower bellows are connected by hinges. The upper and lower bellows of the oven have symmetrically arranged air nozzles, which is generally recognized in the industry as having a good drying effect. This type of oven has been widely used in production and has a certain degree of market recognition.

[0004] On this basis, it is necessary to propose a horizontal drying oven with higher drying efficiency and lower energy consumption. Summary of the invention

[0005] The purpose of the present invention is to provide an oven for a printing and embossing integrated machine with high drying efficiency and low energy consumption.

[0006] In order to solve the above technical problems, the present invention discloses an oven for a printing and embossing integrated machine, comprising a plurality of drying devices connected front and back in a horizontal direction, the drying device at least comprises a box body, an air supply drying mechanism and an exhaust gas extraction mechanism; the air supply drying mechanism comprises a bellows group, a first power unit and an air supply pipe; the bellows group is arranged in the box body, the first power unit arranged at the upper part of the box body sends the drying air to the bellows group through the air supply pipe; the bellows group comprises an upper bellows and a lower bellows, the gap between the upper bellows and the lower bellows forms a drying passage for the passage of the articles to be dried, the bottom of the upper bellows is laterally provided with a plurality of toothed upper blowing nozzles, the top of the lower bellows is laterally provided with a plurality of toothed lower blowing nozzles, and the upper blowing nozzles and the lower blowing nozzles are symmetrically arranged along the drying passage; the bottom of the upper blowing nozzle is provided with an upper air outlet, and the top of the lower blowing nozzle is provided with a lower air outlet; A windshield group is provided in the drying tunnel, and the windshield group includes an upper windshield provided below the upper wind box and a lower windshield provided above the lower wind box, and the upper windshield and the lower windshield move back and forth synchronously horizontally; the upper windshield has a plurality of upper windshield strips for shielding the upper air outlet, and the lower windshield has a plurality of lower windshield strips for shielding the lower air outlet, and the upper windshield strips and the lower windshield strips on the upper and lower sides of the same position are arranged alternately. During the movement of the windshield group, the upper windshield or the lower windshield strips shield the workpiece to be dried, so that a difference in wind pressure occurs at that position.

[0007] Preferably, when the upper wind shield at the same position completely blocks the upper air outlet, the lower wind shield does not block the lower air outlet. At this time, due to the blocking of the upper wind shield, the wind pressure on the workpiece to be dried directly below the upper air outlet is reduced, while the wind pressure on the other side of the same position is normal. At this time, the upper wind pressure at this position is smaller than the lower wind pressure. With the movement of the wind shield group, when the lower wind shield completely blocks the upper and lower air outlets, the upper wind shield does not block the upper air outlet. At this time, the upper wind pressure at this position is greater than the lower wind pressure. In this process, with the overall reciprocating movement of the wind shield group, the wind pressure acting on the upper and lower sides of the workpiece to be dried at the same position changes alternately, thereby causing small up and down vibrations of the workpiece to be dried, thereby improving the drying efficiency.

[0008] Preferably, when a part of the upper wind shield strips completely blocks the upper air outlet and another part of the upper wind shield strips do not block the upper air outlet, the upper wind shield strips that completely block the upper air outlet and the upper wind shield strips that do not block the upper air outlet are arranged alternately; so that multiple local wind pressure difference areas are formed on the workpiece to be dried, causing multiple local small up and down vibrations on the workpiece to be dried, thereby improving the drying efficiency.

[0009] Preferably, each of the upper wind shield and the lower wind shield includes a herringbone diverter plate, the sharp part of the herringbone diverter plate is facing the side away from the drying tunnel, and when the herringbone diverter plate is facing the upper air outlet or the lower air outlet and forms a shield, the air blown out from the upper air outlet or the lower air outlet is directed by the herringbone diverter plate to both sides of the herringbone diverter plate.

[0010] Preferably, the swing amplitude of the reciprocating motion of the windshield plate group is not less than the sum of the widths of the upper windshield strip and the lower windshield strip.

[0011] Preferably, the distance between the upper wind shield and the upper air outlet is not greater than 5 mm, and the distance between the lower wind shield and the lower air outlet is not greater than 5 mm.

[0012] Preferably, the exhaust gas extraction mechanism includes a second power unit and an exhaust pipe, the exhaust pipe is arranged above the box body and an exhaust port is opened at the top of the box body.

[0013] Preferably, the internal cavity of the upper bellows is divided into 2-6 air ducts parallel to the length direction of the box body by a partition, and the internal cavity of the lower bellows is divided into 2-6 air ducts parallel to the length direction of the box body by a partition.

[0014] Preferably, the air supply duct includes a front air supply duct arranged on the front side of the box body and a rear air supply duct arranged on the rear side of the box body; the front air supply duct and the rear air supply duct are connected with the upper air box and the lower air box from both sides, the front air supply duct is used to supply air to half of the air ducts on the front side of the upper air box and the lower air box, and the rear air supply duct is used to supply air to half of the air ducts on the rear side of the upper air box and the lower air box.

[0015] Preferably, a guide wheel is provided in the drying tunnel, and the guide wheel forms support from the lower side of the object to be dried.

[0016] The oven for the printing and embossing integrated machine of the present invention has at least the following advantages: 1. By installing a wind shield group in the drying tunnel, the wind pressure from the air outlet of the upper and lower wind boxes to the workpiece to be dried changes, and the wind pressure acting on the upper and lower sides of the workpiece to be dried at the same position changes rapidly and alternately, thereby causing a small vibration of the workpiece to be dried up and down, and at the same time strengthening the eddy current formed on the upper and lower sides of the workpiece to be dried, which helps to speed up the separation of the solvent from the workpiece to be dried, improve drying efficiency and reduce energy consumption.

[0017] 2. By setting up multiple air ducts in the bellows, and supplying air to the air ducts from both sides, the wind pressure at each air outlet can be kept stable and consistent. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of an oven for a printing and embossing machine, wherein the workpiece to be dried and the wind shield group are not shown in order to clearly show the structure of the bellows group.

[0019] Figure 2 This is a schematic diagram of the structure of an oven for a printing and embossing machine (with the protective plate and part of the air supply duct hidden).

[0020] Figure 3 for Figure 2 Schematic diagram of the rear view structure of the oven used in the printing and embossing machine.

[0021] Figure 4 for Figure 2 Schematic diagram of the structure of the wind box group (part of the wind induction bend is hidden).

[0022] Figure 5 This is a schematic diagram of the structure of an oven for a printing and embossing machine (showing the workpiece to be dried and the windshield group).

[0023] Figure 6 for Figure 5A partial enlarged view of area A in the oven for the printing and embossing machine.

[0024] Figure 7 A schematic diagram of the structure of a herringbone diverter plate The numbers in the figure are: part to be dried 100, box body 1, bellows group 2, upper bellows 210, lower bellows 220, upper blowing nozzle 211, lower blowing nozzle 221, upper air outlet 212, lower air outlet 222, first power unit 3, air supply duct 4, front air supply duct 410, rear air supply duct 420, drying corridor 5, wind shield group 6, upper wind shield 610, lower wind shield 620, upper wind shield strip 611, lower wind shield strip 621, metal rod 630, herringbone diverter plate 7, second power unit 8, exhaust pipe 9, air duct 10, partition 1001, sub-air duct 1002, air induction bend 1003, guide wheel 11. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below through examples so that those skilled in the art can implement the invention with reference to the description.

[0026] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0027] like Figure 1-3 As shown, an oven for a printing and embossing integrated machine includes a plurality of drying devices connected front and back in a horizontal direction, wherein the drying devices at least include a box body 1, an air supply drying mechanism and an exhaust gas extraction mechanism; the air supply drying mechanism includes a bellows group 2, a first power unit 3 and an air supply pipe 4; the bellows group 2 is arranged in the box body 1, and the first power unit 3 arranged at the upper part of the box sends drying air to the bellows group 2 through the air supply pipe, and the bellows group 2 includes an upper bellows 210 and a lower bellows 220. In this embodiment, the upper bellows 210 and the lower bellows 220 are The bellows 220 is in the shape of a flat isosceles trapezoid; the gap between the upper bellows 210 and the lower bellows 220 forms a drying passage 5 for the to-be-dried object 100 (such as kraft paper, etc.) to pass through; a plurality of toothed upper blowing nozzles 211 are transversely arranged at the bottom of the upper bellows 210, and a plurality of toothed lower blowing nozzles 221 are transversely arranged at the top of the lower bellows 220; the upper blowing nozzles and the lower blowing nozzles are symmetrically arranged along the drying passage 5; an upper air outlet 212 is arranged at the bottom of the upper blowing nozzle, and a lower air outlet 222 is arranged at the top of the lower blowing nozzle; The exhaust gas extraction mechanism includes a second power unit 8 and an exhaust pipe 9. The exhaust pipe 9 is arranged above the box body 1 and has an exhaust port at the top of the box body 1.

[0028] like Figure 4As shown, the upper air box 210 is divided into 2-6 air ducts 10 parallel to the length direction of the box body 1 by a partition 1001, and the lower air box 220 is divided into 2-6 air ducts 10 parallel to the length direction of the box body 1 by a partition. The air supply pipe includes a front air supply pipe 410 arranged at the front side of the box body 1 and a rear air supply pipe 420 arranged at the rear side of the box body 1; the front air supply pipe 410 and the rear air supply pipe 420 are connected with the upper air box 210 and the lower air box 220 from both sides, and the front air supply pipe 410 is used to supply air to half of the air ducts at the front side of the upper air box 210 and the lower air box 220, and the rear air supply pipe 420 is used to supply air to half of the air ducts at the rear side of the upper air box 210 and the lower air box 220. By dividing the internal cavity of the upper wind box 210 and the lower wind box 220 into a plurality of air ducts, and using the air supply pipes on both sides to supply air to half of the air ducts, the uniform distribution of the wind pressure in the wind box at each air outlet can be better guaranteed. In this embodiment, there are 4 air ducts in each of the upper wind box 210 and the lower wind box 220, and each air duct is divided into two symmetrical sub-air ducts 1002. Four air induction bends 1003 are respectively provided at the two side openings of the upper wind box 210 and the lower wind box 220, and each air induction bend is connected to a sub-air duct 1002, so as to achieve uniform distribution of air supply and keep the wind pressure at each air outlet as consistent as possible.

[0029] A guide wheel 11 is provided in the drying tunnel 5 , and the guide wheel supports the lower side of the object 100 to be dried.

[0030] like Figure 5-7 As shown, on the basis of the above structure, a windshield group 6 is provided in the drying tunnel 5, and the windshield group includes an upper windshield 610 provided below the upper wind box 210 and a lower windshield 620 provided above the lower wind box 220, and the upper windshield 610 and the lower windshield 620 move back and forth synchronously horizontally; the upper windshield 610 has a plurality of upper windshield strips 611 for shielding the upper air outlet 212, and the lower windshield 620 has a plurality of lower windshield strips 621 for shielding the lower air outlet 222, and the windshield strips on the same side are connected by a metal rod 630, and the metal rod can be bent appropriately to avoid the influence of the guide wheel. The upper windshield strips 611 and the lower windshield strips 621 on the upper and lower sides of the same position are arranged alternately, and during the movement of the windshield group, the upper windshield strips 611 or the lower windshield strips 621 shield the dried object 100, so that the wind pressure difference occurs at this position.

[0031] When the upper wind shield 611 at the same position completely blocks the upper air outlet 212, the lower wind shield 621 does not block the lower air outlet. At this time, due to the blocking of the upper wind shield 611, the wind pressure on the to-be-dried object 100 directly below the upper air outlet 212 is reduced, while the wind pressure on the other side of the same position is normal. At this time, the wind pressure on the upper side of this position is less than the wind pressure on the lower side. With the movement of the wind shield group, when the lower wind shield 621 completely blocks the upper and lower air outlets 222, the upper wind shield 611 does not block the upper air outlet. In this process, as the wind shield group moves back and forth as a whole, the wind pressure on the upper and lower sides of the object to be dried 100 at the same position changes rapidly and alternately, thereby causing the object to be dried 100 to vibrate slightly up and down, and at the same time, strengthening the vortex formed on the upper and lower sides of the object to be dried 100, which helps to speed up the separation of the solvent from the object to be dried 100 and improve the drying efficiency. In addition, appropriately reducing the temperature or air volume of the drying air supply can also achieve the required drying effect, thereby reducing energy consumption.

[0032] In the present embodiment, when a part of the upper wind shield strips 611 completely blocks the upper air outlet 212 and the other part of the upper wind shield strips 611 do not block the upper air outlet 212, the upper wind shield strips 611 that completely blocks the upper air outlet 212 and the upper wind shield strips 611 that do not block the upper air outlet 212 are arranged alternately, and the lower wind shield strips 621 are also arranged to adapt to it; this enables multiple local wind pressure difference areas to be formed on the to-be-dried piece 100, causing multiple local small up and down vibrations to be formed on the to-be-dried piece 100, thereby improving the drying efficiency, and at the same time, it can also avoid the overall amplitude of the to-be-dried piece 100 being too large, resulting in the phenomenon that the color paste on the to-be-dried piece 100 is obviously cracked on the surface of the base fabric.

[0033] like Figure 7 As shown, each of the upper wind shield 611 and the lower wind shield 621 includes a herringbone diverter 7, and the sharp part of the herringbone diverter 7 is facing the side away from the drying tunnel 5. When the herringbone diverter 7 blocks the upper air outlet 212 or the lower air outlet 222, the wind blown out from the upper air outlet 212 or the lower air outlet 222 is guided by the herringbone diverter to both sides of the herringbone diverter, and the diverted wind is blown toward the surface of the to-be-dried piece 100 at a certain angle to partially dry the to-be-dried piece 100.

[0034] The swing amplitude of the reciprocating motion of the windshield plate group 6 is not less than the sum of the widths of the upper windshield strip 611 and the lower windshield strip 621 .

[0035] The distance between the upper wind shield strip 611 and the upper air outlet 212 is not greater than 5 mm, and the distance between the lower wind shield strip 621 and the lower air outlet 222 is not greater than 5 mm.

[0036] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the embodiments shown and described herein.

Claims

1. An oven for a printing and embossing machine, characterized in that: The present invention comprises a plurality of drying devices connected front to back in a horizontal direction, wherein the drying device at least comprises a housing, an air supply drying mechanism and an exhaust gas extraction mechanism; the air supply drying mechanism comprises a bellows group, a first power unit and an air supply pipe; the bellows group is arranged in the housing, and the first power unit arranged on the upper part of the housing sends drying air to the bellows group through the air supply pipe, the bellows group comprises an upper bellows and a lower bellows, the gap between the upper bellows and the lower bellows forms a drying passage for passage of articles to be dried, a plurality of toothed upper blowing nozzles are transversely arranged at the bottom of the upper bellows, a plurality of toothed lower blowing nozzles are transversely arranged at the top of the lower bellows, and the upper blowing nozzles and the lower blowing nozzles are symmetrically arranged along the drying passage; an upper air outlet is arranged at the bottom of the upper blowing nozzle, and a lower air outlet is arranged at the top of the lower blowing nozzle; A windshield group is provided in the drying tunnel, and the windshield group includes an upper windshield provided below the upper wind box and a lower windshield provided above the lower wind box, and the upper windshield and the lower windshield move back and forth synchronously horizontally; the upper windshield has a plurality of upper windshield strips for shielding the upper air outlet, and the lower windshield has a plurality of lower windshield strips for shielding the lower air outlet, and the upper windshield strips and the lower windshield strips on the upper and lower sides of the same position are arranged alternately. During the movement of the windshield group, the upper windshield or the lower windshield strips shield the workpiece to be dried, so that a difference in wind pressure occurs at that position.

2. The oven for a printing and embossing integrated machine according to claim 1, characterized in that: When the upper wind shield at the same position completely blocks the upper air outlet, the lower wind shield does not block the lower air outlet. At this time, due to the blocking of the upper wind shield, the wind pressure on the workpiece to be dried directly below the upper air outlet is reduced, while the wind pressure on the other side of the same position is normal. At this time, the upper wind pressure at this position is smaller than the lower wind pressure. With the movement of the wind shield group, when the lower wind shield completely blocks the upper and lower air outlets, the upper wind shield does not block the upper air outlet. At this time, the upper wind pressure at this position is greater than the lower wind pressure. In this process, with the overall reciprocating movement of the wind shield group, the wind pressure on the upper and lower sides of the workpiece to be dried at the same position changes alternately, thereby causing small up and down vibrations of the workpiece to be dried, thereby improving the drying efficiency.

3. The oven for a printing and embossing integrated machine according to claim 2, characterized in that: When a part of the upper wind shield strips completely blocks the upper air outlet, and another part of the upper wind shield strips do not block the upper air outlet, the upper wind shield strips that completely block the upper air outlet and the upper wind shield strips that do not block the upper air outlet are arranged alternately; so that multiple local wind pressure difference areas are formed on the workpiece to be dried, causing multiple local small up and down vibrations on the workpiece to be dried, thereby improving the drying efficiency.

4. The oven for a printing and embossing integrated machine according to claim 3, characterized in that: Each of the upper wind shield and the lower wind shield includes a herringbone diverter plate, the sharp part of the herringbone diverter plate is facing the side away from the drying tunnel. When the herringbone diverter plate blocks the upper air outlet or the lower air outlet, the air blown out from the upper air outlet or the lower air outlet is directed by the herringbone diverter plate to both sides of the herringbone diverter plate.

5. The oven for a printing and embossing integrated machine according to claim 3, characterized in that: The swing amplitude of the reciprocating motion of the windshield plate group is not less than the sum of the widths of the upper windshield strip and the lower windshield strip.

6. The oven for a printing and embossing integrated machine according to claim 3, characterized in that: The distance between the upper wind shield and the upper air outlet is not greater than 5 mm, and the distance between the lower wind shield and the lower air outlet is not greater than 5 mm.

7. The oven for a printing and embossing integrated machine according to claim 1, characterized in that: The exhaust gas extraction mechanism comprises a second power unit and an exhaust pipe. The exhaust pipe is arranged above the box body and has an exhaust port at the top of the box body.

8. The oven for a printing and embossing integrated machine according to claim 1, characterized in that: The upper bellows is divided into 2-6 air ducts parallel to the length of the box body by a partition, and the lower bellows is divided into 2-6 air ducts parallel to the length of the box body by a partition.

9. The oven for a printing and embossing machine according to claim 8, characterized in that: The air supply duct includes a front air supply duct arranged on the front side of the box body and a rear air supply duct arranged on the rear side of the box body; the front air supply duct and the rear air supply duct are connected with the upper air box and the lower air box from both sides, the front air supply duct is used to supply air to the air ducts of half the number of the upper air box and the lower air box on the front side, and the rear air supply duct is used to supply air to the air ducts of half the number of the upper air box and the lower air box on the rear side.

10. The oven for a printing and embossing integrated machine according to claim 1, characterized in that: A guide wheel is arranged in the drying tunnel, and the guide wheel supports the lower side of the object to be dried.

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