A cast-coated paper casting composite cooling roll and a cooling method

Abstract

The application discloses a kind of casting paper casting composite cooling roller and cooling method, it is related to casting paper processing technical field.The application is configured first outer cooling part on the outer surface periphery upstream of casting roller, second outer cooling part is configured downstream, the temperature of outer surface periphery upstream of casting roller is detected by first low infrared sensor head, first high infrared sensor head, adaptive airflow rate control is carried out by jet pipe head, the temperature of outer surface of casting roller is reduced quickly, downstream temperature of outer surface of casting roller is detected by second high infrared sensor head, second low infrared sensor head, the flow rate of cooling liquid in casting roller is driven and controlled, and the last cooling " sprint " of casting roller outer surface downstream of supplementary temperature is not up to standard, and the working temperature of outer surface of casting roller is realized by precise, efficient, energy-saving control regulation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of laminated paper processing, and particularly relates to a laminated paper casting composite forming cooling roller and a cooling method. BACKGROUND

[0002] Laminated paper is a composite material coated on the surface of paper by plastic particles through a casting machine. The main feature of the composite material is that it can prevent oil and water and can be heat sealed. Therefore, it is widely used in technical fields such as industrial product packaging and daily product production. For example, a paper cup made of laminated paper has the above-mentioned main features. In the laminated paper production process, the casting roller is responsible for the casting process of molten plastic on the laminated paper. The casting roller also absorbs a large amount of heat during the compounding of the laminated paper material. Therefore, the casting roller needs to be continuously cooled. The existing cooling method of the casting roller is to continuously inject cooling liquid into the inner cavity of the casting roller to continuously cool the entire cooling roller by liquid cooling. The above-mentioned liquid cooling method of the casting roller starts cooling from the inside of the casting roller, and then the temperature of the outer surface (actual working surface) of the casting roller decreases. The actual temperature of the outer surface of the casting roller cannot be known, and the cooling liquid rate cannot be easily controlled. If the cooling liquid rate is too fast, it may cause waste of (low-temperature) water resources. If the cooling liquid rate is too slow, it is not conducive to the effective cooling of the outer surface of the casting roller, so that the temperature of the outer surface of the casting roller for casting and cooling the laminated paper cannot be accurately, timely and energy-saving guaranteed. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a laminated paper casting composite forming cooling roller and a cooling method, so as to accurately, efficiently and energy-savingly realize the driving control and adjustment of the working temperature of the outer surface of the casting roller.

[0004] To solve the above technical problems, the present application is realized by the following technical scheme:

[0005] The application provides a kind of casting paper casting composite forming cooling roller, including casting roller, cleaning roller with the top position of the outer surface of casting roller rolling contact, main side drive assembly installed in one side of the shaft end of casting roller, vice side linkage assembly installed in the other side of the shaft end of casting roller, main side drive assembly is connected with driving motor, vice side linkage assembly is provided with cooling liquid rotating joint communicated with the internal liquid cooling cavity of casting roller, the periphery of casting roller is provided with first outer cooling part located in one side of casting roller, second outer cooling part located in the other side of casting roller.The first outer cooling part is provided with a plurality of first low infrared sensor heads for detecting the temperature of the outer surface of casting roller, a plurality of first high infrared sensor heads, wherein the first high infrared sensor head is located at the position above the first low infrared sensor head.The second outer cooling part is provided with a plurality of second low infrared sensor heads for detecting the temperature of the outer surface of casting roller, a plurality of second high infrared sensor heads, wherein the second high infrared sensor head is located at the position above the second low infrared sensor head.Both the first outer cooling part and the second outer cooling part are provided with a plurality of jet pipe heads, and the airflow direction of the jet pipe heads of the first outer cooling part and the second outer cooling part is inclined upward and towards the cleaning roller above the casting roller.

[0006] As a preferred technical solution of the casting paper casting composite forming cooling roller in the application: the number of first low infrared sensor heads, first high infrared sensor heads and jet pipe heads of first outer cooling part is the same and is arranged in alignment, and the number of second low infrared sensor heads, second high infrared sensor heads and jet pipe heads of second outer cooling part is the same and is arranged in alignment.

[0007] As a preferred technical solution of the casting paper casting composite forming cooling roller in the application: the detection direction of first low infrared sensor heads, first high infrared sensor heads, second low infrared sensor heads and second high infrared sensor heads is perpendicular to the outer surface of casting roller.

[0008] As a preferred technical solution of the casting paper casting composite forming cooling roller in the application: the distance between first low infrared sensor heads, first high infrared sensor heads, second low infrared sensor heads and second high infrared sensor heads and the outer surface of casting roller is the same.

[0009] As a preferred technical solution of the casting paper casting composite forming cooling roller in the application: the airflow direction of jet pipe heads of first outer cooling part and second outer cooling part is tangent to the outer surface of casting roller.

[0010] As a preferred technical solution of the casting paper casting composite forming cooling roller in the application: the distribution range of jet pipe heads of first outer cooling part, first high infrared sensor heads, first outer cooling part and second outer cooling part matches the axial range of the outer surface of casting roller.

[0011] As a preferred technical scheme of the casting composite forming cooling roller of the coated paper in the application: the first outer cooling part and the second outer cooling part are both provided with a gas supply box, the gas supply box is connected with a cold gas injection pipe, and the gas supply box is internally provided with a plurality of linear electric control valves, each linear electric control valve is independently connected with an airflow branch pipe, and the end of each airflow branch pipe is independently connected with a gas jet pipe head.

[0012] The application provides a cooling method of a casting composite forming cooling roller of coated paper, which comprises the following steps:

[0013] S1, after the lowest point of the outer surface of the casting roller is extruded with the casting coated paper, the casting roller continues to rotate, and the linear speed of the casting roller is V.

[0014] S2, the first low-position infrared sensor head detects that the temperature of the outer surface of the casting roller is Y1, the control system pre-sets a first maximum temperature value Y 1max , and if Y1 is greater than or equal to Y 1max , then: the gas jet pipe head of the first outer cooling part has a gas outlet rate V C1 , V C1 ∝(Y1-Y 1max ), and the gas jet pipe head of the first outer cooling part has a time delay for changing the airflow rate. Wherein, L1 is the linear distance between the position of the outer surface of the casting roller detected by the first low-position infrared sensor head and the position of the airflow of the gas jet pipe head of the first outer cooling part blowing to the outer surface of the casting roller.

[0015] S3, the first high-position infrared sensor head detects that the temperature of the outer surface of the casting roller is Y2, the control system pre-sets a second maximum temperature value Y 2max , and if Y2 is greater than or equal to Y 2max , then: the gas jet pipe head of the second outer cooling part has a gas outlet rate V C2 , V C2 ∝(W2-W 2max ), and the gas jet pipe head of the second outer cooling part has a time delay for changing the airflow rate. Wherein, L2 is the linear distance between the position of the outer surface of the casting roller detected by the first high-position infrared sensor head and the position of the airflow of the gas jet pipe head of the second outer cooling part blowing to the outer surface of the casting roller.

[0016] S4, the second high-position infrared sensor head detects that the temperature of the outer surface of the casting roller is Y3, the second low-position infrared sensor head detects that the temperature of the outer surface of the casting roller is Y4, the control system pre-sets a third maximum temperature value Y 3max and a fourth maximum temperature value Y 4max , the control system drives the normal flow rate V S of the cooling liquid in the internal liquid cooling cavity of the casting roller, and if Y3 is greater than or equal to Y 3max or Y4 is greater than or equal to Y 4max , then: the control system drives the flow rate V SK= V S + Delta V K , wherein Delta V K ∝ [(Y3-Y 3max ), (Y4-Y 4max )], until Y3 < Y 3max and Y4 < Y 4max , the control system drives the flow rate of the cooling liquid in the internal liquid cooling cavity of the casting roller to be V S . Among the above-mentioned preset reference temperature values, the first maximum temperature value Y 1max , the second maximum temperature value Y 2max , the third maximum temperature value Y 3max , and the fourth maximum temperature value Y 4max decrease in turn.

[0017] Compared with the prior art, the beneficial effects of the present application are:

[0018] The present application is configured with a first external cooling part upstream and a second external cooling part downstream on the outer surface periphery of the casting roller, the temperature of the outer surface periphery upstream of the casting roller is detected by the first low infrared temperature sensor and the first high infrared temperature sensor, the airflow rate is controlled adaptively by the jet pipe head to quickly reduce the temperature of the outer surface of the casting roller, at the same time, the temperature of the outer surface downstream of the casting roller is detected by the second high infrared temperature sensor and the second low infrared temperature sensor, and the flow rate of the cooling liquid in the casting roller is driven to assist the last cooling of the outer surface downstream of the casting roller whose temperature is not up to standard, so that the working temperature of the outer surface of the casting roller is precisely, efficiently and energy-savingly controlled and regulated. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of the casting roller and its driving assembly in the present application.

[0020] Figure 2 It is a schematic diagram of the cooperation of the first external cooling part, the second external cooling part and the casting roller in the present application.

[0021] Figure 3 It is a position schematic diagram of the first low infrared temperature sensor, the first high infrared temperature sensor and the jet pipe head in the first external cooling part in the present application.

[0022] Figure 4 It is a relationship schematic diagram of the maximum temperature values of the outer surface periphery position of the casting roller in the present application.

[0023] Figure 5 It is a structure schematic diagram of the internal cooling liquid flow of the casting roller in the present application.

[0024] Wherein: 1-casting roller, 101-internal liquid cooling cavity; 2-main side driving assembly; 3-driving motor; 4-secondary side linkage assembly; 5-cooling liquid rotary joint; 6-cleaning roller; 7-casting film paper; 8-first outer cooling part, 801-first low-position infrared sensor head, 802-first high-position infrared sensor head; 9-second outer cooling part, 901-second low-position infrared sensor head, 902-second high-position infrared sensor head; 10-gas supply box; 11-cooling gas injection pipe; 12-linear electric control valve; 13-gas flow branch pipe; 14-gas injection pipe head. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0026] Example one, the present application relates to a kind of film-coated paper casting composite forming cooling roller, its main structural features are as follows:

[0027] Please refer to Figure 1 , cleaning roller 6 and casting roller 1 outer surface top position rolling contact, the shaft end side of casting roller 1 is configured to be installed with main side driving assembly 2, the shaft end other side of casting roller 1 is configured to be installed with secondary side linkage assembly 4, driving motor 3 drives casting roller 1 to rotate by main side driving assembly 2, secondary side linkage assembly 4 is configured with cooling liquid rotary joint 5 (the prior art that cooling liquid is injected into the internal cooling cavity 101 of casting roller 1 through cooling liquid rotary joint 5, this will not be described in detail in the present application) in communication with casting roller 1.

[0028] Please refer to Figure 2 , Figure 3, the first outer cooling part 8 is located on one side of the circumference of the casting roller 1, and the second outer cooling part 9 is located on the other side of the circumference of the casting roller 1, the first outer cooling part 8 is provided with a plurality of first low-position infrared sensor heads 801 and a plurality of first high-position infrared sensor heads 802 for detecting the temperature of the outer surface of the casting roller 1, the first low-position infrared sensor heads 801 are located at the lower part of the first outer cooling part 8, and the first high-position infrared sensor heads 802 are located at the upper part of the first outer cooling part 8, the second outer cooling part 9 is provided with a plurality of second low-position infrared sensor heads 901 and a plurality of second high-position infrared sensor heads 902 for detecting the temperature of the outer surface of the casting roller 1, the second high-position infrared sensor heads 902 are located at the upper part of the second outer cooling part 9, and the second low-position infrared sensor heads 901 are located at the lower part of the second outer cooling part 9, the detection directions of the first low-position infrared sensor heads 801, the first high-position infrared sensor heads 802, the second low-position infrared sensor heads 901 and the second high-position infrared sensor heads 902 are all perpendicular to the outer surface of the casting roller 1, and the perpendicular distances of the first low-position infrared sensor heads 801, the first high-position infrared sensor heads 802, the second low-position infrared sensor heads 901 and the second high-position infrared sensor heads 902 to the outer surface of the casting roller 1 are all the same.

[0029] The first outer cooling part 8 is provided with a plurality of jet pipe heads 14, and the second outer cooling part 9 is also provided with a plurality of jet pipe heads 14, the jet pipe heads 14 of the first outer cooling part 8 are located between the first low-position infrared sensor heads 801 and the first high-position infrared sensor heads 802, and the jet pipe heads 14 of the second outer cooling part 9 are located between the second low-position infrared sensor heads 901 and the second high-position infrared sensor heads 902.

[0030] The airflow directions of the jet pipe heads 14 of the first outer cooling part 8 and the second outer cooling part 9 are all inclined upward, and the first outer cooling part 8 and the second outer cooling part 9 are inclined toward the cleaning roller 6 above the casting roller 1 (the directions in which the jet pipe heads 14 of the first outer cooling part 8 and the second outer cooling part 9 spray airflow are tangent to the outer surface of the casting roller 1).

[0031] Within the length range of the generatrix of the casting roller 1 in the axial direction, the plurality of first low-position infrared sensor heads 801, the plurality of first high-position infrared sensor heads 802, and the plurality of jet pipe heads 14 of the first outer cooling part 8 and the second outer cooling part 9 are all uniformly distributed at equal intervals.

[0032] The first outer cooling part 8 and the second outer cooling part 9 are both provided with a gas supply box 10, the gas supply box 10 is internally provided with a plurality of linear electric control valves 12, the gas supply box 10 is connected with a cold gas injection pipe 11, one linear electric control valve 12 is independently connected with one airflow branch pipe 13, and one airflow branch pipe 13 is independently connected with one jet pipe head 14 at the end.

[0033] Please refer to Figure 3 , the number of the first low-position infrared sensor heads 801, the first high-position infrared sensor heads 802, and the jet pipe heads 14 of the first outer cooling part is the same and is arranged in alignment. Figure 2In the present application, the second low-position infrared sensor head 901, the second high-position infrared sensor head 902, and the jet pipe head 14 of the second outer cooling part 9 have the same number and are arranged in alignment.

[0034] Embodiment two, the present application relates to a kind of cooling method of casting composite forming cooling roll of membrane paper, its main method content is as follows:

[0035] First, after the lowest point of the outer surface of the casting roll 1 extrusion contact with casting membrane paper, continue to rotate, the linear velocity of the driving motor driving the casting roll 1 rotation is V, the linear distance between the position of the first low-position infrared sensor head 801 detecting the outer surface of the casting roll 1 and the jet pipe head 14 airflow of the first outer cooling part 8 blowing to the position point of the outer surface of the casting roll 1 is L1, the linear distance between the position of the first high-position infrared sensor head 802 detecting the outer surface of the casting roll 1 and the jet pipe head 14 airflow of the second outer cooling part 9 blowing to the position point of the outer surface of the casting roll 1 is L2, the normal flow rate of the cooling liquid in the internal liquid cooling cavity of the control system driving the casting roll 1 is V S .

[0036] Then, when the first low-position infrared sensor head 801 detects that the temperature of the outer surface of the casting roll 1 is Y1 greater than the first maximum temperature value Y 1max pre-set by the control system, then: the rate of the jet pipe head 14 of the first outer cooling part 8 is V C1 , V C1 ∝(Y1-Y 1max ), the time of the jet pipe head 14 of the first outer cooling part 8 changing the airflow rate is

[0037] Then, when the first high-position infrared sensor head 802 detects that the temperature of the outer surface of the casting roll 1 is Y2 greater than the second maximum temperature value Y 2max pre-set by the control system, then: the rate of the jet pipe head 14 of the second outer cooling part 9 is V C2 , V C2 ∝(W2-W 2max ), the time of the jet pipe head 14 of the second outer cooling part 9 changing the airflow rate is

[0038] Then, when the second high-position infrared sensor head 902 detects that the temperature of the outer surface of the casting roll 1 is Y3, and the second low-position infrared sensor head 901 detects that the temperature of the outer surface of the casting roll 1 is Y4, the control system pre-sets the third maximum temperature value Y 3max and the fourth maximum temperature value Y 4max , if Y3≥Y 3max or Y4≥Y 4max exists, then: the flow rate of the cooling liquid in the internal liquid cooling cavity of the control system driving the casting roll 1 is V SK =V S +ΔVK wherein ΔV K ∝[(Y3-Y 3max ), (Y4-Y 4max )] and ΔV K is proportional to (Y3-Y 3max ) or (Y4-Y 4max ), when Y3≥Y 3max and Y4≥Y 4max , it can be considered that ΔV K is proportional to the total difference of (Y3-Y 3max ) and (Y4-Y 4max ), and the purpose of accelerating the flow rate of the liquid cooling liquid in the inner part of the casting roller 1 is to make the temperature of the outer surface area of the casting roller 1, which is about to contact the casting film paper, reach the working temperature that can be contacted for casting, so as to ensure the effect of the casting cooling contact of the casting film paper. Until Y3 3max and Y4 4max , the control system drives the flow rate of the cooling liquid in the inner liquid cooling cavity of the casting roller 1 to be V S .

[0039] In addition, it should be noted that the first maximum temperature value Y 1max , the second maximum temperature value Y 2max , the third maximum temperature value Y 3max , and the fourth maximum temperature value Y 4max decrease in turn.

[0040] In the present application, a plurality of first low-position infrared sensor heads 801 independently detect the temperatures of different position points on the same generatrix position of the outer surface of the casting roller 1. According to the real-time temperature of a position point, when the position point detected by the first low-position infrared sensor head 801 is about to rotate to the position blown by the gas flow of the first outer cooling part first jet pipe head 14, the corresponding rate of cold gas flow is blown out by the first low-position infrared sensor head 801 directly above the first jet pipe head 14, so as to realize the precise, efficient, and energy-saving cooling of “point-to-point”. The temperature detection mode of the first low-position infrared sensor head 801 and the cold gas outlet control mode of the jet pipe head 14 of the second outer cooling part 9 are also the same.

[0041] In the present application, as Figure 2 , Figure 4The first low infrared sensor head 801 detects the position at 2π / 5 of the circumference of the cross section of the shaft end of the casting roller 1, the first high infrared sensor head 802 detects the position at 3π / 4 of the circumference of the cross section of the shaft end of the casting roller 1, the second high infrared sensor head 902 detects the position at 5π / 4 of the circumference of the cross section of the shaft end of the casting roller 1, and the second low infrared sensor head 901 detects the position at 8π / 5 of the circumference of the cross section of the shaft end of the casting roller 1. Through the temperature detection of the main position points of the outer surface of the casting roller 1, the temperature change of the outer surface of the casting roller 1 is judged in time, and the flow rate of the cold gas flow of the air jet pipe head 14 and the cooling liquid in the casting roller 1 is controlled in time, so that the temperature of the outer surface of the casting roller 1 is reduced to the “working” temperature of the casting contact again after one rotation.

[0042] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A cooling method of a casting composite cooling roller for a coated paper, using a casting composite cooling roller for a coated paper, the structure comprising a casting roller (1), a cleaning roller (6) in rolling contact with the top of the outer surface of the casting roller (1), a main side driving assembly (2) installed on one side of the shaft end of the casting roller (1), a secondary side linkage assembly (4) installed on the other side of the shaft end of the casting roller (1), the main side driving assembly (2) being connected with a driving motor (3), and the secondary side linkage assembly (4) being provided with a cooling liquid rotating joint (5) in communication with the internal liquid cooling cavity of the casting roller (1), characterized in that: the casting roller (1) is provided with a first outer cooling part (8) on one side of the casting roller (1) and a second outer cooling part (9) on the other side of the casting roller (1); the first outer cooling part (8) is provided with a plurality of first low-position infrared sensor heads (801) and a plurality of first high-position infrared sensor heads (802) for detecting the temperature of the outer surface of the casting roller; the first high-position infrared sensor heads (802) are located above the first low-position infrared sensor heads (801); the second outer cooling part (9) is provided with a plurality of second low-position infrared sensor heads (901) and a plurality of second high-position infrared sensor heads (902) for detecting the temperature of the outer surface of the casting roller (1); the second high-position infrared sensor heads (902) are located above the second low-position infrared sensor heads (901); the first outer cooling part (8) and the second outer cooling part (9) are both provided with a plurality of jet pipe heads (14); the airflow directions of the jet pipe heads (14) of the first outer cooling part (8) and the second outer cooling part (9) are both inclined upward and towards the cleaning roller (6) above the casting roller (1); the cooling method of the cooling roller is as follows: S1. After the lowest point of the outer surface of the casting roller (1) is in extrusion contact with the casting coated paper, the casting roller (1) continues to rotate, and the linear speed of the casting roller (1) is V; S2. The first low infrared sensor head (801) detects that the outer surface temperature of the casting roller (1) is Y1, and the control system presets a first maximum temperature value Y 1max , if Y1≥Y 1max , then: the rate of the gas outlet of the first outer cooling part (8) is V C1 , V C1 ∝(Y1-Y 1max ), the time for the first outer cooling part (8) to change the rate of the gas flow is T1=L1 / V; wherein, L1 is the linear distance between the position where the first low infrared sensor head (801) detects the outer surface of the casting roller (1) and the position where the gas flow of the first outer cooling part (8) blows to the outer surface of the casting roller (1). S3. The first high-position infrared sensor (802) detects that the outer surface temperature of the casting roller (1) is Y2, and the control system presets the second maximum temperature value Y. 2max If Y2≥Y 2max Then: the air velocity exiting the jet nozzle (14) of the second external cooling section (9) is V. C2 V C2 ∝(Y2-Y 2max The time for the jet nozzle (14) of the second external cooling section (9) to change the airflow rate is T2=L2 / V; where L2 is the linear distance between the position of the outer surface of the casting roller (1) detected by the first high-position infrared sensor (802) and the position of the airflow blown by the jet nozzle (14) of the second external cooling section (9) toward the outer surface of the casting roller (1); S4. The second high infrared sensor head (902) detects the temperature of the outer surface of the casting roller (1) as Y3, the second low infrared sensor head (901) detects the temperature of the outer surface of the casting roller (1) as Y4, and the control system presets a third maximum temperature value Y 3max , a fourth maximum temperature value Y 4max , and the control system drives the normal flow rate of the cooling liquid in the internal liquid cooling cavity of the casting roller (1) to be V S . If Y3≥Y 3max or Y4≥Y 4max , then: the control system drives the flow rate of the cooling liquid in the internal liquid cooling cavity of the casting roller (1) to be V SK =V S +ΔV K , where ΔV K is in a positive proportional relationship with (Y3-Y 3max ) or (Y4-Y 4max ); and when Y3<Y 3max and Y4<Y 4max , the control system drives the flow rate of the cooling liquid in the internal liquid cooling cavity of the casting roller (1) to be V S .

2. The cooling method of the casting composite cooling roller for a coated paper according to claim 1, characterized in that: the number of the first low-position infrared sensor heads (801), the first high-position infrared sensor heads (802), and the jet pipe heads (14) of the first outer cooling part is the same and they are arranged in alignment; the number of the second low-position infrared sensor heads (901), the second high-position infrared sensor heads (902), and the jet pipe heads (14) of the second outer cooling part (9) is the same and they are arranged in alignment.

3. The cooling method of the casting composite cooling roller for a coated paper according to claim 1, characterized in that: the detection directions of the first low-position infrared sensor heads (801), the first high-position infrared sensor heads (802), the second low-position infrared sensor heads (901), and the second high-position infrared sensor heads (902) are all perpendicular to the outer surface of the casting roller (1).

4. The cooling method of the casting composite cooling roller for a coated paper according to claim 1 or 3, characterized in that: the distances from the first low-position infrared sensor heads (801), the first high-position infrared sensor heads (802), the second low-position infrared sensor heads (901), and the second high-position infrared sensor heads (902) to the outer surface of the casting roller (1) are all the same.

5. The cooling method of the casting composite forming cooling roller of the coated paper according to claim 1, characterized in that: The jet pipe heads (14) of the first outer cooling part (8) and the second outer cooling part (9) are tangent to the outer surface of the casting roller (1) in the airflow direction.

6. The cooling method of the casting composite forming cooling roller of the coated paper according to claim 1, characterized in that: The distribution range of the jet pipe heads (14) of the first low-position infrared sensing head (801), the first high-position infrared sensing head (802), the first outer cooling part (8) and the second outer cooling part (9) matches the axial range of the outer surface of the casting roller (1).

7. The cooling method of the casting composite forming cooling roller of the coated paper according to claim 1, characterized in that: The first outer cooling part (8) and the second outer cooling part (9) are both provided with a gas supply box (10), the gas supply box (10) is connected with a cold gas injection pipe (11), the gas supply box (10) is internally provided with a plurality of linear electric control valves (12), each linear electric control valve (12) is independently connected with an airflow branch pipe (13), and the end of each airflow branch pipe (13) is independently connected with a jet pipe head (14).

8. The cooling method of the casting composite forming cooling roller of the coated paper according to claim 1, characterized in that: the first maximum temperature value Y 1max the second maximum temperature value Y 2max the third maximum temperature value Y 3max the fourth maximum temperature value Y 4max the temperature values decrease in order.

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