Paper making sizing machine

Abstract

The present invention relates to the field of papermaking technology, specifically to a papermaking glue applicator, comprising a base, a refrigeration water tank is arranged below the base, support plates are arranged on both sides of the upper end surface of the base, an upper roller is rotatably arranged above the two support plates, a first driving motor for driving the upper roller is arranged on one side of one of the support plates, a sliding block is arranged vertically slidingly in the support plate, a lower roller is rotatably connected between the two sliding blocks, and a second driving motor for driving the lower roller is arranged on one side of one of the sliding blocks. The present invention provides first rotating rods on both sides of the upper roller, the two first rotating rods are rotatably connected to the two support plates respectively, one of the first rotating rods extends to the outside of the support plate and is connected to the output shaft of the first driving motor, the first driving motor is supported by the first motor support plate, and the first rotating rod is driven to rotate by the first driving motor, thereby driving the upper roller to rotate.

Description

Technical Field

[0001] The invention relates to a papermaking sizing machine, in particular to a papermaking sizing machine, belonging to the technical field of papermaking. Background Art

[0002] In order to improve the surface strength of paper and paperboard and prevent the diffusion and penetration of water-based liquids, paper and paperboard need to be sizing. In papermaking machines, as the requirements for paper quality increase, surface sizing agents are widely used. Improving the electrical drive control accuracy of sizing machines and the operating rate of equipment can greatly improve the operating stability of papermaking systems and increase product quality and output.

[0003] The papermaking glue machine is divided into two parts: the upper roller and the lower roller. The transmission control adopts speed control for the glue upper roller and load distribution for the glue lower roller. The original design of the load distribution method is to read the output torque of the main transmission as the input torque of the slave transmission through the PLC program controller, and then multiply the result with the load coefficient and output it as the torque given by the slave transmission. This load distribution coefficient can be adjusted on the host computer. Generally, the equipment with master-slave transmission load distribution is debugged by electrical engineers in the early stage, and there are basically no problems in the later operation. For example, the pressing roller, the driving screen roller, etc. all adopt this load distribution method;

[0004] Due to the particularity of the sizing machine, the contact angle of the upper and lower rollers is 15 degrees. The upper and lower rollers are obliquely pressed, not positively pressed, which is different from the pressing roller. In addition, the sizing roller is not covered with felt cloth, so the friction between the upper and lower rollers is small when they are in contact. Because the contact angle of the upper and lower rollers is small and there is no felt cloth contact, it is easier for the upper and lower rollers to slip during operation. During normal operation, after the upper and lower rollers are closed in contact, the paper passes between the upper and lower rollers. The upper roller is a smooth roller, which is often called a hard roller because of its high hardness. It is used as the main drive, and the lower roller is a rubber roller, often called a soft roller. It is used as a slave drive. The main drive roller is fixed, and the slave drive roller is movable. It often needs to be closed and opened during operation. During the closed and pressurized operation of the upper and lower glue rollers, the upper and lower glue rollers constantly rub against each other, resulting in continuous loss of glue on the lower roller (rubber roller). In the later period of the roller's service life, the rubber roller becomes harder and harder due to the friction of the glue, causing the lower glue roller (rubber roller) to become smoother and smoother, which makes it easier for the lower glue roller to slip. The lower glue roller will drop in speed due to slipping, causing it to be out of sync with the upper glue roller, affecting paper breaks in production. Therefore, in the later period when the glue roller is about to be replaced, electrical engineers are required to frequently adjust the load distribution coefficient of the lower glue roller on the host computer.

[0005] In addition, because the lower glue roller is constantly in friction with the upper roller during operation, the friction will make the temperature of the lower glue roller high. Generally, the lower glue roller is designed to be cooled by cooling water. The cooling water passes through the lower glue roller body. When the cooling water outlet pipe is not smooth, it will cause the volume of the lower glue roller to be full of water, and the load of the lower glue roller will become heavier. Especially in the early stage of paper feeding, no paper has passed yet, the friction between the upper and lower rollers is small, the torque output by the upper glue roller is small due to the small load, and the input torque transmitted to the lower glue roller is also small. The lower glue roller has a large load due to the large water accumulation. The speed of the lower glue roller and the upper glue roller cannot be increased due to the small input torque and low output, and the speed is not synchronized with the upper roller, affecting normal production. In this case, the load factor can only be adjusted by electrical engineers to increase the load factor of the lower glue roller to change the output condition of the lower glue roller.

[0006] Therefore, it is urgent to improve the transmission control program of the papermaking sizing machine and the papermaking sizing machine to solve the above-mentioned problems. Summary of the invention

[0007] The purpose of the present invention is to provide a papermaking sizing machine. The adjustment of the K value is not as simple as the original program, but requires the calculation results of four parameters X1, X2, Y1, and Y2. Therefore, after the program is improved, it is no longer necessary for electrical engineers to frequently adjust the parameters, thereby improving the electrical transmission control accuracy and equipment operation rate of the sizing machine, reducing the number of paper breaks, stabilizing production, and improving output and quality.

[0008] In order to achieve the above-mentioned purpose, the main technical scheme adopted by the present invention includes: a papermaking sizing machine transmission control program, Y=KX+b, X is the input torque of the main transmission; Y is the output torque of the slave transmission, b is the output torque offset value of the slave transmission, X1 is the low limit value of the input torque of the slave transmission; X2 is the high limit value of the input torque of the slave transmission, Y1 is the low limit value of the output torque of the slave transmission, Y2 is the high limit value of the output torque of the slave transmission, and K is the slope, that is, the load coefficient; (X1, Y1) is substituted into Y=KX+b, Y1=KX1+b, and it is obtained that: b=Y1-KX1, that is, the expression is: Y=KX+(Y1-KX1), and the K value K=(Y1-Y0) / (X1-X0) is substituted into: Y=(Y1-Y0)X+(Y0X1-Y1X0) / (X1-X0).

[0009] A papermaking glue applicator comprises a base, a cooling water tank is arranged below the base, support plates are arranged on both sides of the upper end surface of the base, an upper roller is rotatably arranged above the two support plates, a first drive motor for driving the upper roller is arranged on one side of one of the support plates, a sliding block is arranged vertically in the support plate, a lower roller is rotatably connected between the two sliding blocks, a second drive motor for driving the lower roller is arranged on one side of one of the sliding blocks, and a drive mechanism for driving the sliding block to slide is arranged above the support plate; the cooling water tank is connected to the inside of the lower roller through a pipeline.

[0010] Preferably, the contact angle between the upper roller and the lower roller is 15 degrees, the upper roller is a smooth roller, the lower roller is a glue roller, and a placement plate for placing paper is provided between the two support plates, and the placement plate is located between the upper roller and the lower roller.

[0011] Preferably, a first rotating rod is provided on both sides of the upper roller, and the two first rotating rods are respectively rotatably connected to the two support plates, one of the first rotating rods extends to the outside of the support plate and is connected to the output shaft of the first drive motor, and the first drive motor is supported by the first motor support plate.

[0012] Preferably, the two support plates are vertically provided with a first slide groove for the sliding block to slide, both sides of the first slide groove are provided with a limit slide groove, and both sides of the sliding block are provided with a limit sliding block slidably connected with the limit slide groove;

[0013] A second rotating rod is provided on both sides of the lower roller, and the two second rotating rods are respectively rotatably connected to the two sliding blocks. One of the second rotating rods extends to the outside of the sliding block and is connected to the output shaft of the second drive motor. A second motor support plate for supporting the second drive motor is provided on the outside of the sliding block.

[0014] Preferably, the driving mechanism includes a third driving motor arranged on the upper end surface of the support plate and a screw rod connected to the output shaft of the third driving motor, the bottom of the screw rod is rotatably connected to the lower end surface of the first slide groove, the screw rod is threadedly connected to the sliding block, and the screw rod and the second rotating rod are staggered with each other.

[0015] Preferably, the refrigeration water tank includes a water tank and a refrigeration compressor, a partition is provided on one side of the water tank close to the refrigeration compressor, the refrigeration compressor is connected to the upper part of the water tank through a refrigeration pipe, and a water pump connected to the pipe is provided inside the water tank.

[0016] Preferably, the pipeline includes a main pipeline connected to the water tank, a telescopic pipeline connected to the top of the main pipeline, and a connecting pipeline connected to the upper end of the telescopic pipeline, and the connecting pipeline is rotatably connected to one of the second rotating rods.

[0017] Preferably, a first water pipe connected to the water pump is provided inside the main pipe, a telescopic water pipe connected to the first water pipe is provided inside the telescopic pipe, and a second water pipe connected to the telescopic water pipe is provided inside the connecting pipe.

[0018] Preferably, a cooling ring is provided inside the lower roller, and a water supply pipeline rotatably connected to the second water pipe is provided at one end of the cooling ring.

[0019] The present invention has at least the following beneficial effects:

[0020] 1. Y=KX+b, X is the input torque of the main drive; Y is the output torque of the slave drive, b is the output torque bias value of the slave drive, X1 is the low limit value of the input torque of the slave drive; X2 is the high limit value of the input torque of the slave drive, Y1 is the low limit value of the output torque of the slave drive, Y2 is the high limit value of the output torque of the slave drive, and K is the slope, i.e., the load factor; when X=0, Y is no longer equal to 0, but Y=b (b≠0), even when the output torque of the main drive is low, the input torque of the slave drive is increased by the b value bias. When the load of the slave drive increases and a larger output torque is required, the required high torque can be guaranteed by the bias value, so that the slave drive no longer causes speed fluctuations due to insufficient output torque; the adjustment of the K value is no longer a direct adjustment of the K coefficient, but the size of the K value is changed by adjusting the four parameters of X1, Y1, X2, and Y2; That is, it is calculated from four parameter values, namely, the low limit of the torque input of the slave transmission, the high limit of the torque input of the slave transmission, the low limit of the torque output of the slave transmission, and the high limit of the torque output of the slave transmission; the input and output of the slave transmission are fully considered, and the limit value is set in this way, which limits the range of the K value setting value, avoiding the situation that the torque output value of the slave transmission does not change much due to the K value being set too low, and the adjustment has no effect; it also avoids the situation that the torque output value of the slave transmission is too high due to the K value being set too large, causing the speed fluctuation of the slave transmission; by limiting the four parameters, the output torque of the slave transmission is stabilized in a range, and no longer fluctuates with the large fluctuations in the input value of the slave transmission; after the improvement, it is no longer necessary for electrical engineers to adjust the parameters frequently, thereby improving the electrical transmission control accuracy of the sizing machine and the operation rate of the equipment, reducing the number of paper breaks, stabilizing production, and improving output and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0022] Figure 1 It is a schematic diagram of the mathematical model of the improved procedure of the present invention;

[0023] Figure 2 It is a schematic diagram of the mathematical model of the original program of the present invention;

[0024] Figure 3 It is a schematic diagram of the three-dimensional structure of the sizing machine of the present invention;

[0025] Figure 4 It is a three-dimensional structural schematic diagram of the sizing machine of the present invention from another viewing angle;

[0026] Figure 5 It is a front view of the present invention;

[0027] Figure 6 It is a schematic diagram of cooling the lower roller of the present invention;

[0028] Figure 7 is a side cross-sectional view of the present invention;

[0029] Figure 8 For the present invention Figure 6 A magnified image;

[0030] Fig. 9 For the present invention Figure 6 Enlarged view of point B.

[0031] In the figure, 1-base; 2-refrigeration water tank; 201-water tank; 202-refrigeration compressor; 3-support plate; 4-upper roller; 5-first drive motor; 6-sliding block; 7-lower roller; 8-second drive motor; 9-driving mechanism; 10-pipeline; 11-placing plate; 12-first rotating rod; 13-first motor support plate; 14-first slide groove; 15-limiting slide groove; 16-limiting slider; 17-second rotating rod; 18-second motor support plate; 19-screw; 20-refrigeration pipeline; 21-partition; 22-water pump; 23-main pipeline; 24-telescopic pipeline; 25-connecting pipeline; 26-first water pipe; 27-telescopic water pipe; 28-second water pipe; 29-cooling ring; 30-water pipeline; 31-third drive motor. DETAILED DESCRIPTION

[0032] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0033] like Figure 1-Figure 9 As shown, the papermaking sizing machine provided in this embodiment includes a base 1, a cooling water tank 2 is arranged below the base 1, support plates 3 are arranged on both sides of the upper end surface of the base 1, an upper roller 4 is rotatably arranged above the two support plates 3, and a first driving motor 5 for driving the upper roller 4 is arranged on one side of one of the support plates 3.

[0034] Among them, Figure 5 As shown, first rotating rods 12 are provided on both sides of the upper roller 4, and the two first rotating rods 12 are rotatably connected to the two support plates 3 respectively, wherein one of the first rotating rods 12 extends to the outside of the support plate 3 and is connected to the output shaft of the first driving motor 5, and the first driving motor 5 is supported by the first motor supporting plate 13, and the first rotating rod 12 is driven to rotate by the first driving motor 5, thereby driving the upper roller 4 to rotate;

[0035] A sliding block 6 is vertically slidably arranged in the support plate 3, wherein Figure 7 As shown, the two support plates 3 are vertically provided with first slide grooves 14 for sliding the sliding block 6, and both sides of the first slide groove 14 are provided with limiting slide grooves 15, and both sides of the sliding block 6 are provided with limiting sliders 16 slidably connected with the limiting slide grooves 15, and the setting of the limiting slide grooves 15 and the limiting sliders 16 being slidably connected can prevent the sliding block 6 from being separated when sliding in the first slide groove 14;

[0036] A lower roller 7 is rotatably connected between the two sliding blocks 6, a second driving motor 8 for driving the lower roller 7 is arranged on one side of one of the sliding blocks 6, and a driving mechanism 9 for driving the sliding block 6 to slide is arranged above the support plate 3; wherein the contact angle between the upper roller 4 and the lower roller 7 is 15 degrees, the upper roller 4 is a smooth roller, and the lower roller 7 is a glue roller, and a placement plate 11 for placing paper is arranged between the two support plates 3, and the placement plate 11 is between the upper roller 4 and the lower roller 7. During normal operation, after the upper roller 4 and the lower roller 7 are in contact and closed, the paper passes between the upper and lower rollers, the upper roller 4 is a smooth roller, which is often called a hard roller with high hardness, and serves as the main drive, and the lower roller 7 is a rubber roller, which is often called a soft roller, and serves as a slave drive, the main drive roller is fixed, and the slave drive roller is movable, and often needs to be closed and opened during operation;

[0037] Further, such as Figure 1 and Figure 5 As shown, second rotating rods 17 are provided on both sides of the lower roller 7, and the two second rotating rods 17 are rotatably connected with the two sliding blocks 6 respectively, wherein one of the second rotating rods 17 extends to the outside of the sliding block 6 and is connected to the output shaft of the second driving motor 8, and a second motor supporting plate 18 for supporting the second driving motor 8 is provided on the outside of the sliding block 6, and the second driving motor 8 is synchronously turned on with the first driving motor 5 to drive the second rotating rod 17 to rotate, thereby driving the lower roller 7 and the upper roller 4 to rotate synchronously, and realizing the paper conveying and gluing;

[0038] Furthermore, Figure 7 As shown, the driving mechanism 9 includes a third driving motor 31 arranged on the upper end surface of the support plate 3 and a screw rod 19 connected to the output shaft of the third driving motor 31. The bottom of the screw rod 19 is rotatably connected to the lower end surface of the first slide groove 14, and the screw rod 19 is threadedly connected to the sliding block 6. When it is necessary to adjust the distance between the lower roller 7 and the upper roller 4, the third driving motor 31 is used to drive the screw rod 19 to rotate in the sliding block 6, thereby driving the sliding block 6 to slide and adjust in the first slide groove 14, and then driving the lower roller 7 rotatably connected to the sliding block 6 to slide and adjust, the screw rod 19 and the second rotating rod 17 are staggered with each other, and the staggered setting neither affects the normal rotation of the lower roller 7 driven by the second rotating rod 17, nor affects the use of the screw rod 19 to drive the sliding block 6 to slide up and down in the first slide groove 14;

[0039] The cooling water tank 2 is connected to the interior of the lower roller 7 through a pipe 10; Figure 6 , Figure 8 and Fig. 9 As shown, the refrigeration water tank 2 includes a water tank 201 and a refrigeration compressor 202. A partition 21 is provided on one side of the water tank 201 close to the refrigeration compressor 202. The refrigeration compressor 202 is communicated with the upper part of the inside of the water tank 201 through a refrigeration pipe 20. The water source inside the water tank 201 can be cooled by the refrigeration compressor 202 and the refrigeration pipe 20 to improve the cooling effect. A water pump 22 communicated with the pipe 10 is provided inside the water tank 201, and the water pump 22 is used for pumping water and draining water.

[0040] Further, such as Figure 6 , Figure 8 and Fig. 9 As shown, the pipeline 10 includes a main pipeline 23 connected to the water tank 201, a telescopic pipeline 24 connected to the upper part of the main pipeline 23, and a connecting pipeline 25 connected to the upper end of the telescopic pipeline 24. The connecting pipeline 25 is rotatably connected to one of the second rotating rods 17. The setting of the rotatable connection does not affect the protection of the pipeline 10, nor does it affect the normal rotation of the lower roller 7.

[0041] Furthermore, Figure 6 , Figure 8 and Fig. 9As shown, a first water pipe 26 connected to the water pump 22 is arranged inside the main pipe 23, a telescopic water pipe 27 connected to the first water pipe 26 is arranged inside the telescopic pipe 24, and a second water pipe 28 connected to the telescopic water pipe 27 is arranged inside the connecting pipe 25. The first water pipe 26, the telescopic water pipe 27 and the second water pipe 28 are all used to extract and discharge the water source inside the water tank 201 through the water pump 22, and when the lower roller 7 is adjusted to slide up and down, the telescopic pipe 24 and the telescopic water pipe 27 with telescopic effect will also be synchronously extended and retracted, so that they will not affect the normal up and down sliding adjustment of the lower roller 7, which is convenient for later inspection and maintenance;

[0042] A cooling ring 29 is disposed inside the lower roller 7 , and a water delivery pipe 30 rotatably connected to the second water pipe 28 is disposed at one end of the cooling ring 29 .

[0043] Through observation Figure 2 It can be seen that in the original program, Y=KX, X is the input torque of the slave transmission; Y is the output torque of the slave transmission, K is the slope, that is, the load factor. The electrical engineer adjusts the K factor on the host computer; the output torque of the slave transmission and the input torque of the slave transmission maintain a linear relationship;

[0044] Figure 2 In the figure, Y=KX, when X=0, Y=0. When the master-slave transmission point is just started, the input torque of the slave transmission is low, and the output torque of the slave transmission is also low. If the roller load of the slave transmission increases due to water accumulation, the output torque value of the slave transmission at this time cannot guarantee the torque required by the slave transmission due to the increase in water load.

[0045] Figure 2 In the calculation, Y=KX, the adjustment coefficient K can change the size of the Y value, but if the K value is adjusted too low, the Y value will not change much and there will be no effect. If the K value is adjusted too high, the Y value will rise too high, which will cause the output torque of the slave transmission to increase. When the torque of the slave transmission reaches a certain level, the speed of the slave transmission will be forced to increase due to the large torque, and the speed of the upper and lower rollers will fluctuate. For the adjustment of the K value, usually electrical engineers can only observe the situation on site to make adjustments, which leads to a long adjustment time. In addition, due to the constant changes in the paper quantity and vehicle speed on site, it is necessary to adjust the load distribution coefficient repeatedly by humans.

[0046] Example 1, by observing Figure 1 and Figure 2 By comparison, Figure 1 In the formula, Y=KX+b, X is the input torque of the main drive; Y is the output torque of the slave drive, b is the output torque offset value of the slave drive, X1 is the low limit value of the input torque of the slave drive; X2 is the high limit value of the input torque of the slave drive, Y1 is the low limit value of the output torque of the slave drive, Y2 is the high limit value of the output torque of the slave drive, and K is the slope, i.e. the load factor. However, the adjustment of the K value is no longer consistent with Figure 2 It is not as simple as adjusting directly, but through the calculation results of four parameters: X1, X2, Y1, and Y2;

[0047] from Figure 1 It can be seen that substituting (X1, Y1) into Y=KX+b, Y1=KX1+b, we get: b=Y1-KX1, that is, the expression is: Y=KX+(Y1-KX1), substituting the K value K=(Y1-Y0) / (X1-X0) into:

[0048] Y=(Y1-Y0)X+(Y0X1-Y1X0) / (X1-X0);

[0049] Among them, in the ABPLC programming software RSLOGIX5000, custom variables are:

[0050] X1=Torque_loop.intput_L: Torque input low limit from the transmission;

[0051] Y1=Torque_loop.output_L: Torque output low limit from the transmission;

[0052] X2=Torque_loop.intput_H: Torque input high limit from the drive;

[0053] Y2=Torque_loop.output_H: Torque output high limit from the transmission;

[0054] X=Torque_loop.intput: torque input value from the transmission;

[0055] Y=Torque_loop.output: Torque output value from the transmission;

[0056] Torque_loop.output=((Torque_loop.Output_H-Torque_loop.Output_L)*Torque_loop.Input+(Torque_loop.Input_H*Torque_loop.Output_L)-(Torque_loop.Input_L*Torque_loop.Output_H)) / (Torque_loop.Input_H-Torque_loop.Input_L);

[0057] Embodiment 2, Figure 1In the equation, Y=KX+b, when X=0, Y is no longer equal to 0, but Y=b (b≠0). Even when the output torque of the main transmission is low, the input torque of the slave transmission is increased by the b value offset. When the load of the slave transmission increases and a larger output torque is required, the required high torque can be guaranteed by the offset value. In this way, the slave transmission will no longer cause speed fluctuation due to low output torque and insufficient output.

[0058] Embodiment 3, Figure 1 In the above, Y=KX+b, the adjustment of K value is no longer to adjust K coefficient directly, but to change the size of K value by adjusting four parameters X1, Y1, X2, Y2; that is, it is calculated from four parameter values: low limit of torque input from transmission, high limit of torque input from transmission, low limit of torque output from transmission, and high limit of torque output from transmission; the input and output of slave transmission are fully considered, so as to set the limit value, limit the range of K value setting value, avoid the situation that the torque output value of slave transmission does not change much due to too low K value setting, and there is no effect after adjustment; it also avoids the situation that the torque output value of slave transmission is too high due to too large K value setting, thus causing speed fluctuation of slave transmission; by limiting the four parameters, the output torque of slave transmission is stabilized in a range, and no longer fluctuates with the large fluctuation of input value of slave transmission; after improvement, it is no longer necessary for electrical engineers to adjust parameters frequently, which improves the electrical transmission control accuracy and equipment operation rate of sizing machine, reduces the number of paper breaks, stabilizes production, and improves output and quality;

[0059] Among them, in the ABPLC software RSLOGIX5000, custom variables are:

[0060] X1=Torque_loop.intput_L: Torque input low limit from the transmission;

[0061] Y1=Torque_loop.output_L: Torque output low limit from the transmission;

[0062] X2=Torque_loop.intput_H: input high limit of the main drive;

[0063] Y2=Torque_loop.output_H: Torque output high limit of the main drive;

[0064] X=Torque_loop.intput: torque output of the main drive;

[0065] Y=Torque_loop.output: torque input of the main drive;

[0066] Torque_loop.output=(Torque_loop.Output_H-Torque_loop.Output_L)*Torque_loop.Input+(Torque_loop.Input_H*Torque_loop.Output_L)-(Torque_loop.Input_L*Torque_loop.Output_H) / (Torque_loop.Input_H-Torque_loop.Input_L);

[0067] Add subroutines Torque_Distribute, Torque_Filter, and Torque_process to the RSLOGIX5000 main program mainprogram.

[0068] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0069] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0070] The above description shows and describes several preferred embodiments of the present invention, but as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. Changes and variations made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A papermaking sizing machine, comprising a base (1), a cooling water tank (2) being arranged below the base (1), support plates (3) being arranged on both sides of the upper end surface of the base (1), an upper roller (4) being rotatably arranged above the two support plates (3), a first driving motor (5) for driving the upper roller (4) being arranged on one side of one of the support plates (3), a sliding block (6) being arranged vertically slidingly inside the support plate (3), a lower roller (7) being rotatably connected between the two sliding blocks (6), a second driving motor (8) for driving the lower roller (7) being arranged on one side of one of the sliding blocks (6), and a driving mechanism (9) for driving the sliding block (6) to slide being arranged above the support plate (3); the cooling water tank (2) being connected to the interior of the lower roller (7) through a pipeline (10); The refrigeration water tank (2) comprises a water tank (201) and a refrigeration compressor (202); a partition (21) is provided on one side of the water tank (201) close to the refrigeration compressor (202); the refrigeration compressor (202) is communicated with the upper part of the interior of the water tank (201) via a refrigeration pipe (20); and a water pump (22) communicated with the pipe (10) is provided inside the water tank (201).

2. A papermaking sizing machine according to claim 1, characterized in that: The contact angle between the upper roller (4) and the lower roller (7) is 15 degrees; the upper roller (4) is a smooth roller; the lower roller (7) is a glue-applying roller; a placement plate (11) for placing paper is provided between the two support plates (3); the placement plate (11) is located between the upper roller (4) and the lower roller (7).

3. A papermaking sizing machine according to claim 1, characterized in that: A first rotating rod (12) is provided on both sides of the upper roller (4), and the two first rotating rods (12) are rotatably connected to the two support plates (3) respectively, wherein one of the first rotating rods (12) extends to the outside of the support plate (3) and is connected to the output shaft of the first drive motor (5), and the first drive motor (5) is supported by the first motor support plate (13).

4. A papermaking sizing machine according to claim 1, characterized in that: The two support plates (3) are each vertically provided with a first sliding groove (14) for the sliding block (6) to slide, and both sides of the first sliding groove (14) are provided with a limiting sliding groove (15), and both sides of the sliding block (6) are provided with a limiting sliding block (16) slidably connected to the limiting sliding groove (15); A second rotating rod (17) is provided on both sides of the lower roller (7), and the two second rotating rods (17) are rotatably connected to the two sliding blocks (6) respectively, wherein one of the second rotating rods (17) extends to the outside of the sliding block (6) and is connected to the output shaft of the second drive motor (8), and a second motor support plate (18) for supporting the second drive motor (8) is provided on the outside of the sliding block (6).

5. A papermaking sizing machine according to claim 4, characterized in that: The driving mechanism (9) comprises a third driving motor (31) arranged on the upper end surface of the supporting plate (3) and a screw rod (19) connected to the output shaft of the third driving motor (31); the bottom of the screw rod (19) is rotatably connected to the lower end surface of the first sliding groove (14); the screw rod (19) is threadedly connected to the sliding block (6); and the screw rod (19) and the second rotating rod (17) are staggered with each other.

6. A papermaking sizing machine according to claim 5, characterized in that: The pipeline (10) comprises a main pipeline (23) communicating with the water tank (201), a telescopic pipeline (24) connected to the top of the main pipeline (23), and a connecting pipeline (25) communicating with the upper end of the telescopic pipeline (24); the connecting pipeline (25) is rotatably connected to one of the second rotating rods (17).

7. A papermaking sizing machine according to claim 6, characterized in that: A first water pipe (26) in communication with the water pump (22) is disposed inside the main pipe (23), a telescopic water pipe (27) in communication with the first water pipe (26) is disposed inside the telescopic pipe (24), and a second water pipe (28) in communication with the telescopic water pipe (27) is disposed inside the connecting pipe (25).

8. A papermaking sizing machine according to claim 7, characterized in that: A cooling ring (29) is provided inside the lower roller (7), and a water supply pipe (30) rotatably connected to the second water pipe (28) is provided at one end of the cooling ring (29).

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