CN212046445U

CN212046445U - Automatic oily device is crossed to surface treatment's ultraviolet ray

Info

Publication number: CN212046445U
Application number: CN202020206394.7U
Authority: CN
Inventors: 林海航
Original assignee: Foshan Gaoming Linghang Color Printing Co ltd
Current assignee: Foshan Gaoming Linghang Color Printing Co ltd
Priority date: 2020-02-25
Filing date: 2020-02-25
Publication date: 2020-12-01
Anticipated expiration: 2030-02-25

Abstract

The utility model discloses an automatic oily device is crossed to surface treatment's ultraviolet ray, include the first dry passageway, the device that oils, second dry passageway, solidification passageway, the cooling channel that set gradually from a left side to the right side, the device that oils includes dust cover, be equipped with the fixed plate in the shell, the fixed plate bottom is equipped with oily casing, cross and evenly be equipped with second electric putter between oily casing and the fixed plate, second electric putter inner wall top is equipped with through the oil groove, the fixed oily brush that has been equipped with in logical oil groove bottom. The utility model discloses a be equipped with oily casing and compression roller, the inside oil body of oil storage casing passes through solenoid valve work and transmits to the inside oil groove that leads to of oily casing, thereby transmit to the printing thing on transmission panel surface to the oily brush of crossing by leading to the oil groove and carry out oily work, simple quick oily work of crossing, work efficiency is high and labour saving and time saving, and third electric putter promotes that the compression roller is scribbled evenly to the printing thing surface after the oily completion of crossing, ensures that oily is even.

Description

Automatic oily device is crossed to surface treatment's ultraviolet ray

Technical Field

The utility model relates to a lithography apparatus field especially relates to an automatic oily device is crossed to surface treatment's ultraviolet ray.

Background

Currently, the primary material of commercial packages is still paper products, such as paper, paperboard, cartons, and the like. Compared with plastics, the paper printed matter has the excellent characteristics of low price, simple and convenient printing, green environmental protection and the like. However, the disadvantage of poor water resistance greatly limits the application of paper prints. With the increasing printing technology and equipment, glazing technology has become popular, making the packaging of goods more advanced. The glazing not only protects the printed matter, but also changes the appearance texture and visual effect of the printed matter and promotes the sale of commodities. With the increasing consumer demand for printed matter or packaging, printed matter glazing has become an important means of print appreciation and modern merchandising.

The oil coating and polishing is to coat gloss oil on the surface of the paper printed matter after the image-text printing is finished, so that a bright film layer is obtained on the surface of the paper printed matter. When the paper printing product is oiled, the smoothness of the surface of the paper printing product is enhanced due to the leveling of the glazing oil on the surface of the paper printing product, the surface gloss of the paper printing product is improved, the surface performance of the paper printing product is improved, the wear resistance and the moisture resistance are enhanced, and the effects of protecting printed pictures and texts and beautifying the packaging product are achieved. Compared with other modes, such as laminating, plastic pasting, spraying and brushing, the printing, oiling and glazing method has the advantages of low price, simple and convenient process and easy operation. The method has the greatest advantages that the oil glazing can be carried out according to actual conditions and customer requirements and special requirements of an actual printing process, but no special equipment of the type is available in the market at present, the oil glazing is carried out one by adopting a manual paper feeding mode, the labor cost is high, the working efficiency is low, and the method is not suitable for mass production.

In order to overcome the problems that the traditional printing oil is not environment-friendly and has low printing efficiency, the UV oil for printing oil is used in the industry at present, has the advantages of high curing speed, energy conservation, normal-temperature curing, superior performance, environmental friendliness and the like, has high light speed, high film brightness, firmness and heat resistance of a dried film surface and good refraction effect, enables a substrate to generate strong main body feeling, and is widely applied to the fields of chemical industry, machinery, electronic light industry, communication and the like. Due to its environmental advantages, UV curing has gained strong support of relevant environmental regulations and intense interest to the industry. However, the prior printing oiling machine only has a common infrared heating unit and is only suitable for the use of the traditional printing oiling oil, and the UV oil can not be well used because the prior printing oiling machine is not provided with a curing unit capable of curing the UV oil.

With the continuous improvement of printing equipment, the printing speed is faster and faster, so that the possibility of insufficient drying of the printing ink exists, the printing ink is easy to crack when being directly glazed without being completely dried through, and the oil after polishing is not dry enough, the oil can generate larger smell and is easy to adhere, the quality of the product is greatly influenced, the printed matter is rolled under the condition of not being dried completely, and after the printed matter is stacked for a period of time, particularly summer, the printed matter is easy to go moldy, the printed matter is scrapped, the product is wasted, the production cost is increased, in addition, the printed matter needs to be dried at high temperature after being glazed, the paper and the printing ink are heated, at high temperature, the elasticity and viscosity of the ink can be greatly influenced, the paper tends to become brittle and thin at high temperature, and the existing oil passing machine does not have a cooling device and cools the printed matter.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects of the prior art and providing an automatic surface treatment ultraviolet oil passing device.

In order to achieve the above purpose, the present invention adopts the following technical solution.

An automatic surface treatment's ultraviolet ray crosses oily device, includes the first dry passageway, the device that oils, the dry passageway of second, solidification passageway, the cooling channel that sets gradually from a left side to the right side, first dry passageway, the device that oils, cooling channel support through bearing structure respectively, the dry passageway of second links together with the solidification passageway, and supports through a bearing structure, bearing structure includes four pillars of the same structure, four fixedly connected with fagging between the pillar, through the fixed motor that is connected with of screw on the fagging, pillar top fixedly connected with support, the support surface is connected with the conveying panel, install conveyer on the conveying panel, conveyer comprises conveying roller and conveyer belt, conveying roller is through pivot swing joint between the support, the activity is equipped with the conveyer belt between the conveying roller, the drying device comprises a motor, a conveying device, a first drying channel, an oil storage shell, a motor, a second drying channel, a first box body, a second box body, a third drying channel and a fourth drying channel, wherein air outlets are arranged on two sides of the first box body, a first air inlet is arranged at the top of the first box body, a plurality of warm air blowers are mounted at the first air inlet through a support, the oil applying device comprises a dustproof shell, a fixed plate is arranged in the shell, the bottom of the fixed plate is provided with the oil applying shell, a second electric push rod is uniformly arranged between the oil applying shell and the fixed plate, an oil applying groove is arranged at the top of the inner wall of the second electric push rod, an oil applying brush is fixedly arranged at the bottom of the oil applying, solidification passageway comprises U-shaped cell body and apron, the both sides inner wall and the bottom of cell body respectively are provided with a plurality of ultraviolet heating fluorescent tubes, are equipped with a plurality of ultraviolet heating fluorescent tubes on the apron, cooling channel includes the third box, install first chill roll and second chill roll in the third box, first chill roll and second chill roll are hollow roller, and are connected with third box top through fourth electric putter, install the air exhauster on the third box lateral wall for outside the steam discharge third box that produces high temperature, reduce the humidity of printed matter.

Further, the second drying channel comprises a second box body, an inlet and an outlet for paper to pass in and out are formed in the bottoms of the two sides of the second box body, second air inlets are formed in the two sides of the second box body, a drying box is fixed to the top of the second box body, a heating pipe is arranged in the middle of the drying box, a temperature sensor is arranged on the inner wall of the drying box, air blowing nozzles are evenly arranged at the bottom of the drying box and are right opposite to the lower surface of a printed matter, hair dryers are arranged on the two sides of the top of the drying box, the air inlet end of each hair dryer is connected with the second air inlet through a pipeline, and a filter is arranged in each second air.

Further, the conveying panel is arranged between the two side plates, limiting plates are arranged on the inner sides of the side plates and arranged at the top of the conveying panel, and first electric push rods are arranged between the limiting plates and the side plates. The first electric push rod pushes the limiting plate to limit the position of the paper by two sides.

Further, it sets up for the slope to lead to the oil groove, it evenly is equipped with through the hydraulic fluid port with crossing the brush junction to lead to the oil groove, it is equipped with the oil inlet to lead to the oil groove top, the oil inlet sets up in crossing oily casing top, it is equipped with the draw-in groove to cross the brush outside, cross brush and draw-in groove joint.

Furthermore, an electromagnetic valve is arranged on the outer side of the oil storage shell and is communicated with the oil inlet through an oil pipe, and an oil filling port is formed in the top of the oil storage shell.

Furthermore, controlling means includes microcontroller, data receiving module, data processing module and data storage module, and with first electric putter, second electric putter, third electric putter, solenoid valve, motor, electric fan heater, air exhauster, hair-dryer, ultraviolet heating fluorescent tube, heating pipe electric connection, controlling means is used for controlling means to carry out oily work.

Furthermore, a laser sensor is arranged between the side plate and the oil passing shell, and the laser sensor is fixed on the fixing plate and used for identifying the width of the paper and transmitting a signal to the control device.

Furthermore, the first cooling roller and the second cooling roller are respectively connected with two sets of hot water heating and circulating systems, the temperature of the first cooling roller is controlled to be 25-27 ℃, the temperature of the second cooling roller is controlled to be 12-14 ℃, a printed product firstly passes through the first cooling roller with higher temperature, then passes through the second cooling roller with lower temperature, and is cooled by the two sets of cooling rollers, and then the printed product is basically consistent with the indoor environment temperature.

The utility model has the advantages that:

(1) the utility model discloses a be equipped with oily casing and compression roller, the inside oil body of oil storage casing passes through solenoid valve work and transmits to the inside oil groove that leads to of oily casing, thereby transmit to the printing thing on transmission panel surface to the oily brush of crossing by leading to the oil groove and carry out oily work, simple quick oily work of crossing, work efficiency is high and labour saving and time saving, and third electric putter promotes that the compression roller is scribbled evenly to the printing thing surface after the oily completion of crossing, ensures that oily is even.

(2) The utility model discloses a be equipped with curb plate and oil storage casing, the laser sensor of roof bottom discerns the width of printed matter and transmit signal to controlling means, and controlling means controls first electric putter and promotes the limiting plate and inject the position of printed matter by both sides, and the staff can supply the oil body through the oil filler hole at oil storage casing top.

(3) The utility model adds an ultraviolet light curing device on the basis of the original printing oil passing machine, so that the purpose that the same equipment is simultaneously suitable for the use of the traditional printing oil and UV oil is realized without purchasing the equipment again, and the use way of the equipment is increased; the UV oil has the advantages of high curing speed, energy conservation, normal-temperature curing, excellent performance, environmental protection and the like, the upper light speed is high, the brightness of the film layer is high, the film surface is firm and heat-resistant after drying, the refraction effect is good, the substrate generates strong main body feeling, the UV oil is used in a large range and matched with a UV curing device, the requirements of safety and environmental protection are met, and the production efficiency is greatly improved.

(4) The utility model discloses a set up first dry channel at the front end of device, can carry out thorough drying with the printing ink after the printing to avoid appearing phenomenons such as crackle behind the gloss oil, simultaneously, through setting up cooling channel at the end of device, can prevent that the paper from becoming fragile and carbonization under high temperature, guarantee the quality and the collection effect of paper.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural view of the side plate of the present invention.

Fig. 3 is a schematic structural diagram of a second drying channel according to the present invention.

Fig. 4 is a schematic structural view of the curing channel of the present invention.

The drawings are marked with: the drying device comprises a first drying channel 1, a first box body 101, an air exhaust port 102, a fan heater 103, an oiling device 2, a shell 201, a fixing plate 202, an oil storage shell 203, an electromagnetic valve 2031, an oil filling port 2032, a compression roller 204, a third electric push rod 205, a second drying channel 3, a second box body 301, a second air inlet 302, a drying box 303, a heating pipe 3031, a temperature sensor 3032, an air blowing nozzle 3033, a blower 304, a filter 305, a curing channel 4, a groove body 401, a cover plate 402, an ultraviolet heating lamp tube 403, a cooling channel 5, a third box body 501, a first cooling roller 502, a second cooling roller 503, a fourth

electric push rod

504, 505, a supporting structure 6, a support column 601, a supporting plate 602, a motor 603, a support 604, a conveying roller 605, a conveying belt 606, a conveying belt 607, a conveying panel 7, an oil passing shell 8, a second electric push rod 801, an oil passing groove 802, an oil passing brush 803, a, Limiting plate 901, first electric push rod 902, controlling means 10, laser sensor 11.

Detailed Description

The technical solution and the advantages of the present invention will be more clear and clear by further describing the embodiments of the present invention with reference to the accompanying drawings.

As shown in fig. 1-4, an automatic surface treatment ultraviolet oiling device comprises a first drying channel 1, an oiling device 2, a second drying channel 3, a curing channel 4, and a cooling channel 5, which are sequentially arranged from left to right, wherein the first drying channel 1, the oiling device 2, and the cooling channel 5 are respectively supported by a supporting structure 6, the second drying channel 3 and the curing channel 4 are connected together and supported by one supporting structure 6, the supporting structure 6 comprises four pillars 601 with the same structure, a supporting plate 602 is fixedly connected between the four pillars 601, a motor 603 is fixedly connected to the supporting plate 602 through screws, a bracket 604 is fixedly connected to the top of the pillar 601, a conveying panel 7 is connected to the surface of the bracket 604, a conveying device is installed on the conveying panel 7, and the conveying device comprises a conveying roller 605 and a conveying belt 606, the conveying rollers 605 are movably connected between the brackets 604 through rotating shafts, the conveying rollers 605 are movably provided with a conveying belt 606, the motor 603 is connected with the conveying device through a transmission belt 607, the first drying channel 1 comprises a first box body 101, air outlets 102 are arranged on two sides of the first box body 101, a first air inlet is arranged on the top of the first box body 101, a plurality of fan heaters 103 are arranged on the first air inlet through the brackets, the oiling device 2 comprises a dustproof shell 201, a fixing plate 202 is arranged in the shell 201, an oil passing shell 8 is arranged at the bottom of the fixing plate 202, second electric push rods 801 are uniformly arranged between the oil passing shell 8 and the fixing plate 202, an oil passing groove 802 is arranged on the top of the inner wall of the second electric push rods 801, an oil passing brush 803 is fixedly arranged at the bottom of the oil passing groove 802, and an oil storage shell 203 is arranged at the, the oil storage tank is characterized in that a control device 10 is arranged on one side of the oil storage tank 203, a side plate 9 is arranged on one side of the oil storage tank 8 close to the first drying channel 1, a press roller 204 is arranged on one side of the oil storage tank 8 far away from the first drying channel 1, a third electric push rod 205 is arranged between the press roller 204 and the fixing plate 202, the curing channel 4 is composed of a U-shaped tank body 401 and a cover plate 402, a plurality of ultraviolet heating lamp tubes 403 are respectively arranged on the inner walls and the bottom of the two sides of the tank body 401, a plurality of ultraviolet heating lamp tubes 403 are arranged on the cover plate 402, the cooling channel 5 comprises a third tank body 501, a first cooling roller 502 and a second cooling roller 503 are arranged in the third tank body 501, the first cooling roller 502 and the second cooling roller 503 are hollow rollers and are connected with the top of the third tank body 501 through a fourth electric push rod 504, an exhaust fan 505 is arranged on the side wall of the third tank body 501, the humidity of the printed matter is reduced.

The second drying channel 3 includes a second box 301, the bottoms of the two sides of the second box 301 are provided with an inlet and an outlet for paper to enter and exit, the two sides of the second box 301 are provided with second air inlets 302, the top of the second box 301 is fixed with a drying box 303, the middle of the drying box 303 is provided with a heating pipe 3031, the inner wall of the drying box 303 is provided with a temperature sensor 3032, the bottom of the drying box 303 is uniformly provided with air blowing nozzles 3033, the air blowing nozzles 3033 are opposite to the lower surface of paper, the two sides of the top of the drying box 303 are provided with blowers 304, the air inlet end of the blower 304 is connected with the second air inlet 302 through a pipeline, and the second air inlet 302 is internally provided with a filter 305.

The conveying panel 7 is arranged between the two side plates 9, a limiting plate 901 is arranged on the inner side of each side plate 9, the limiting plate is arranged at the top of the conveying panel 7, and a first electric push rod 902 is arranged between the limiting plate 901 and the side plates 9. The first electric push rod 902 pushes the limit plate 901 to limit the position of the paper by two sides.

Lead to oil groove 802 and set up for the slope, it evenly is equipped with through the hydraulic fluid port with crossing oil brush 803 junction to lead to oil groove 802, it is equipped with the oil inlet to lead to oil groove 802 top, the oil inlet sets up in crossing 8 tops of oily casings, it is equipped with draw-in groove 804 to cross the oil brush 803 outside, cross oil brush 803 and draw-in groove 804 joint.

The outer side of the oil storage shell 203 is provided with an electromagnetic valve 2031, the electromagnetic valve 2031 is communicated with the oil inlet through an oil pipe, and the top of the oil storage shell 203 is provided with an oil filling port 2032.

The control device 10 comprises a microcontroller, a data receiving module, a data processing module and a data storage module, and is electrically connected with the first electric push rod 902, the second electric push rod 801, the third electric push rod 205, the fourth electric push rod 504, the motor 603, the electromagnetic valve 2031, the warm air blower 103, the exhaust fan 505, the blower 304, the ultraviolet heating lamp tube 403 and the heating tube 3031, and the control device 10 is used for controlling the device to perform oil-passing work.

A laser sensor 11 is arranged between the side plate 9 and the oil passing shell 8, and the laser sensor 11 is fixed on the fixing plate 202 and is used for identifying the width of paper and transmitting a signal to the control device.

The first cooling roller 502 and the second cooling roller 503 are respectively connected with two sets of hot water heating circulation systems, the temperature of the first cooling roller 502 is controlled to be 25-27 ℃, the temperature of the second cooling roller 503 is controlled to be 12-14 ℃, paper passes through the first cooling roller 502 with higher temperature and then passes through the second cooling roller 503 with lower temperature, and after being cooled by the two sets of cooling rollers, the paper is basically consistent with the indoor ambient temperature.

When the device is used, paper printed with ink enters the first drying channel 1 through the conveying device to be dried before the printing is finished, the dried paper enters the oiling device 2, the laser sensor 11 on the fixing plate 202 identifies the width of a printed matter and transmits a signal to the control device 10, the control device 10 controls the first electric push rod 902 to push the limiting plate 901 to limit the position of the printed matter by two sides, an oil body in the oil storage shell 203 is transmitted to the oil passing shell 8 through the electromagnetic valve 2031, and is transmitted to the oil brush 803 through the oil passing groove 802 so as to finish the printed matter on the surface of the conveying panel 7, the device is simple and rapid in finish work, the working efficiency is high, time and labor are saved, a worker can supplement the oil body through the oil filling port 2032 at the top of the oil storage shell 203, the third electric push rod 205 pushes the press roller 204 to uniformly coat the surface of the printed matter after finish, ensure that the oil is even, send into second drying channel 3 and solidification passageway 4 through conveyer with the paper and dry after that, send into cooling channel 5 through conveyer with the paper at last, its cooling channel 5 cools off the paper through the chill roll of two sets of different temperatures respectively, and the paper is unanimous with indoor ambient temperature basically, and air exhauster 505 convulsions simultaneously, takes out the wet, reduces the humidity of paper.

In summary, the preferred embodiments of the present invention are only described, but not intended to limit the scope of the present invention, and all modifications of the equivalent structure or equivalent flow made by the present invention or directly or indirectly applied to other technical fields are also included in the scope of the present invention.

Claims

1. The ultraviolet oiling device for automatic surface treatment comprises a first drying channel (1), an oiling device (2), a second drying channel (3), a curing channel (4) and a cooling channel (5) which are sequentially arranged from left to right, and is characterized in that the first drying channel (1), the oiling device (2) and the cooling channel (5) are respectively supported by a supporting structure (6), the second drying channel (3) and the curing channel (4) are connected together and supported by one supporting structure (6), the supporting structure (6) comprises four supporting columns (601) with the same structure, a supporting plate (602) is fixedly connected between the four supporting columns (601), a motor (603) is fixedly connected onto the supporting plate (602) through a screw, a support (604) is fixedly connected onto the top of each supporting column (601), and a conveying panel (7) is connected onto the surface of the support (604), the drying device is characterized in that a conveying device is installed on the conveying panel (7), the conveying device is composed of conveying rollers (605) and a conveying belt (606), the conveying rollers (605) are movably connected between supports (604) through rotating shafts, the conveying belts (606) are movably arranged between the conveying rollers (605), a motor (603) and the conveying device are connected through a transmission belt (607), the first drying channel (1) comprises a first box body (101), air outlets (102) are formed in two sides of the first box body (101), a first air inlet is formed in the top of the first box body (101), a plurality of fan heaters (103) are installed in the first air inlet through the supports, the oiling device (2) comprises a dustproof shell (201), a fixing plate (202) is arranged in the shell (201), an oiling shell (8) is arranged at the bottom of the fixing plate (202), second electric push rods (801) are uniformly arranged between the oiling shell (8) and the fixing plate (202), the oil storage tank is characterized in that an oil passing groove (802) is formed in the top of the inner wall of the second electric push rod (801), an oil brush (803) is fixedly arranged at the bottom of the oil passing groove (802), an oil storage shell (203) is arranged at the top of the fixing plate (202), a control device (10) is arranged on one side of the oil storage shell (203), a side plate (9) is arranged on one side, close to the first drying channel (1), of the oil passing shell (8), a press roller (204) is arranged on one side, away from the first drying channel (1), of the oil passing shell (8), a third electric push rod (205) is arranged between the press roller (204) and the fixing plate (202), the curing channel (4) is composed of a U-shaped groove body (401) and a cover plate (402), a plurality of ultraviolet heating lamp tubes (403) are respectively arranged on the inner walls and the bottoms of the two sides of the groove body (401), a plurality of ultraviolet heating lamp tubes (, install first chill roll (502) and second chill roll (503) in third box (501), first chill roll (502) and second chill roll (503) are hollow roller, and are connected with third box (501) top through fourth electric putter (504), install air exhauster (505) on the third box (501) lateral wall.

2. The automatic surface treatment ultraviolet oiling device according to claim 1, wherein the second drying channel (3) comprises a second box body (301), the bottom of the second box body (301) is provided with an inlet and an outlet for feeding and discharging paper, the two sides of the second box body (301) are provided with second air inlets (302), the top of the second box body (301) is fixed with a drying box (303), the middle part of the drying box (303) is provided with a heating pipe (3031), the inner wall of the drying box (303) is provided with a temperature sensor (3032), the bottom of the drying box (303) is uniformly provided with air blowing nozzles (3033), the air blowing nozzles (3033) are opposite to the lower surface of the paper, the two sides of the top of the drying box (303) are provided with air blowers (304), and the air inlet end of the air blower (304) is connected with the second air inlets (302) through a pipeline, a filter (305) is arranged in the second air inlet (302).

3. The automatic surface treatment ultraviolet oiling device according to claim 1, wherein the conveying panel (7) is arranged between two side plates (9), a limiting plate (901) is arranged on the inner side of each side plate (9), the limiting plate is arranged on the top of the conveying panel (7), and a first electric push rod (902) is arranged between the limiting plate (901) and the side plate (9).

4. The ultraviolet oil passing device for automatic surface treatment according to claim 1, wherein the oil passing groove (802) is obliquely arranged, oil passing ports are uniformly arranged at the joints of the oil passing groove (802) and the oil passing brushes (803), oil inlets are arranged at the tops of the oil passing groove (802), the oil inlets are arranged at the tops of the oil passing shell (8), clamping grooves (804) are arranged on the outer sides of the oil passing brushes (803), and the oil passing brushes (803) are clamped with the clamping grooves (804).

5. The automatic surface treatment ultraviolet oil passing device according to claim 1, characterized in that an electromagnetic valve (2031) is arranged on the outer side of the oil storage housing (203), the electromagnetic valve (2031) is communicated with the oil inlet through an oil pipe, and an oil filling port (2032) is arranged on the top of the oil storage housing (203).

6. The automatic surface treatment ultraviolet oil-passing device according to claim 1, wherein the control device (10) comprises a microcontroller, a data receiving module, a data processing module and a data storage module, and is electrically connected with the first electric push rod (902), the second electric push rod (801), the third electric push rod (205), the fourth electric push rod (504), the motor (603), the solenoid valve (2031), the fan heater (103), the exhaust fan (505), the blower (304), the ultraviolet heating lamp tube (403) and the heating tube (3031), and the control device (10) is used for controlling the device to perform oil-passing operation.

7. The automatic surface treatment ultraviolet oil passing device according to claim 1, characterized in that a laser sensor (11) is arranged between the side plate (9) and the oil passing shell (8), the laser sensor (11) is fixed on the fixing plate (202) and identifies the width of the paper and transmits a signal to the control device (10).

8. The ultraviolet oiling device for automatic surface treatment of claim 1, wherein the first cooling roller (502) and the second cooling roller (503) are respectively connected with two sets of hot water heating circulation systems, the temperature of the first cooling roller (502) is controlled to be 25-27 ℃, and the temperature of the second cooling roller (503) is controlled to be 12-14 ℃.