A high flatness film casting machine rapid cooling device

Abstract

The utility model belongs to film processing technical field, concretely relates to a kind of high flatness's film casting machine quick cooling device, including support plate, the support plate upside is equipped with height adjusting mechanism, the height adjusting mechanism upside is equipped with support frame, the front and back sides of the support frame are equipped with mounting plate, two the mounting plate from right to left respectively drive assembly are equipped with forming roll and cooling roll, the forming roll outer surface has embossing, the forming roll and cooling roll are both equipped with water cavity, the both sides of the forming roll and cooling roll are equipped with the hollow rotating shaft of mounting plate rotation connection, the hollow rotating shaft is all rotation sealed connection with water pipe, the water pipe of the forming roll and cooling roll two ends is used for water inlet and drainage respectively, by hollow rotating shaft respectively inject hot water and cold water into forming roll and cooling roll, forming roll pass hot water realizes film hot embossing, cooling roll pass cold water rapid cooling, hot forming and cooling are completed synchronously, processing efficiency is high, significantly improve film flatness.

Description

Technical Field

[0001] This utility model belongs to the field of thin film processing technology, specifically relating to a rapid cooling device for a high-flatness thin film casting machine. Background Technology

[0002] In the processing of films, thermal printing is required. Forming rollers in contact with the film heat it and imprint the image on its surface, thus completing the thermal printing process. However, currently, after thermal processing, the film is typically allowed to cool naturally during transport. Natural cooling has drawbacks. The film undergoes rapid heating and mechanical deformation in the printing zone, generating uneven stress within. With natural cooling, this stress is slowly released, causing the film to bend in different directions like a bimetallic sheet. Rapid cooling, on the other hand, causes all molecular chains to lose their mobility almost simultaneously, uniformly "freezing" the internal stress within the film in a very short time, preventing warping due to different release rates. Rapid cooling after thermal processing offers additional benefits, such as creating a temperature gradient along the film's thickness: the surface layer quickly solidifies and sets, while the inner layer remains slightly warm. Subsequently, the slight shrinkage of the inner layer during slow cooling is constrained by the already set surface layer, allowing it to adjust uniformly inwards rather than creating wrinkles. This "from the outside in" solidification sequence can produce a smooth surface. Therefore, it is essential to design a cooling mechanism that can make the surface of the film smooth after processing. Utility Model Content

[0003] The purpose of this invention is to provide a rapid cooling device for a high-flatness film casting machine to solve the problems existing in the background art.

[0004] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows: A rapid cooling device for a high-flatness film casting machine includes a support plate. A height adjustment mechanism is provided on the upper side of the support plate, and a support frame is provided on the upper side of the height adjustment mechanism. Mounting plates are provided on both the front and rear sides of the support frame. A forming roller and a cooling roller are respectively mounted on the two mounting plates from right to left. The outer surface of the forming roller has embossing. Water cavities are provided inside both the forming roller and the cooling roller. Hollow rotating shafts are provided on both sides of the forming roller and the cooling roller, rotatably connected to the mounting plates. Water pipes are rotatably and sealed to the hollow rotating shafts. The water pipes at both ends of the forming roller and the cooling roller are used for water inlet and drainage, respectively. Hot water and cold water are injected into the forming roller and the cooling roller through the hollow rotating shafts, respectively.

[0005] The mounting plate is inlaid with a bearing outer sleeve, one end of the hollow rotating shaft is connected to the bearing outer sleeve, a bearing inner sleeve is rotatably connected inside the bearing outer sleeve, the bearing inner sleeve is connected to a water pipe, and one end of the water pipe extends into the hollow rotating shaft for rotatable sealing connection.

[0006] A feeding mechanism is provided on the right side of the forming roller. The feeding mechanism includes two feeding rollers. Both ends of the two feeding rollers are rotatably connected to the mounting plate on the same side. The two feeding rollers are arranged vertically, and the center position between the two feeding rollers is at the same horizontal height as the center position of the forming roller shaft.

[0007] Both ends of the two feeding rollers are rotatably connected to a first slider. Both mounting plates are provided with a groove that matches the first slider. The first slider is slidably assembled in the groove and can slide horizontally left and right in the groove. The first slider is connected to a first cylinder, and the first cylinder is fixedly connected to the mounting plate.

[0008] The cooling roller is provided with a material-blocking mechanism on its lower side. The material-blocking mechanism includes a material-blocking roller located on the lower side of the cooling roller. Both ends of the material-blocking roller are rotatably equipped with second sliders. Sliding members are fixedly connected to the inner sides of the two mounting plates. The second slider is slidably connected to the sliding members. The second slider is driven by a second cylinder fixedly connected to the mounting plate.

[0009] The abutting roller is offset to one side of the forming roller below the cooling roller. Under the driving action of the second cylinder, the abutting roller can move closer to the cooling roller or further away from the cooling roller.

[0010] The cooling roller is provided with receiving mechanisms on the left and right sides. The receiving mechanism includes two brackets, which are fixedly connected to two mounting plates respectively. Receiving rollers are rotatably connected to the opposite side of the two brackets. The horizontal position of the center of the receiving roller shaft is higher than the horizontal position of the center of the cooling roller shaft.

[0011] Several stabilizing bars are provided between the two mounting plates.

[0012] This utility model has the following technical advantages compared with the prior art: The device employs a linked design where hot water flows through the forming roller and cold water flows through the cooling roller. After the film is hot-pressed and printed by the forming roller, it immediately comes into contact with the cooling roller for rapid cooling. The seamless connection between the thermoforming and cooling processes ensures that the printed texture is clear, firm, and not easily detached, while also quickly releasing the internal stress of the film. This effectively avoids problems such as warping, wrinkles, and deformation after heat processing, significantly improving film flatness and finished product quality, while also shortening the processing flow and significantly increasing production efficiency.

[0013] The feeding mechanism uses upper and lower opposing feeding rollers, with their center lines aligned horizontally with the forming roller axis. Combined with a left-right sliding adjustment structure, the film conveying angle and tension can be precisely adjusted. This ensures a tight fit between the film and the forming roller surface, preventing printing defects such as missed prints, blurring, and misalignment. It also accommodates films of different thicknesses and materials, making film feeding convenient and labor-saving. The feeding speed is uniform and stable, effectively reducing human error and ensuring highly consistent printing quality during batch processing.

[0014] An offset adjustable backing roller is installed below the cooling roller. The backing pressure is precisely controlled by a cylinder, which ensures that the film and the surface of the cooling roller are in close contact, increasing the contact area and contact time. After the film is heat-processed, it comes into full contact with the cooling roller immediately, resulting in uniform and sufficient cooling. This solves the problems of uneven cooling and incomplete cooling in traditional cooling methods, effectively suppressing film deformation and wrinkling, and significantly improving the flatness and yield of the finished product, making it suitable for high-speed continuous processing.

[0015] The forming roller and cooling roller both ends adopt a hollow rotating shaft with bearing sealing structure, and the water pipe is fixed and does not rotate with the roller body. This not only achieves a stable circulation of hot and cold water, but also completely avoids water leakage and seepage during rotation. The continuous flow of hot and cold media for heat exchange keeps the forming roller at a high temperature and the cooling roller at a low temperature. The roller body temperature is constant and controllable, and the processing condition is stable. Attached Figure Description

[0016] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ; Figure 3 for Figure 2 Enlarged structural diagram at point A; Figure 4 This is a partial structural schematic diagram of the present invention; Figure 5 for Figure 4 A magnified structural diagram at point B in the middle.

[0018] The symbols for the main components are explained below: Support plate 1, support frame 11, mounting plate 12, forming roller 2, cooling roller 201, hollow rotating shaft 21, water pipe 22, bearing outer sleeve 3, bearing inner sleeve 31, feeding roller 32, first slider 33, slide groove 34, first cylinder 35, material-stopping roller 4, second slider 41, sliding component 42, second cylinder 43, bracket 44, receiving roller 45, stabilizing rod 46. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In the description of the embodiments of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the embodiments of this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0021] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0022] like Figure 1-5As shown, this utility model discloses a high-flatness film casting machine rapid cooling device, including a support plate 1. A height adjustment mechanism is provided on the upper side of the support plate 1, and a support frame 11 is provided on the upper side of the height adjustment mechanism. Mounting plates 12 are provided on both the front and rear sides of the support frame 11. The two mounting plates 12 are respectively driven and assembled with a forming roller 2 and a cooling roller 201 from right to left. The outer surface of the forming roller 2 has embossing. Both the forming roller 2 and the cooling roller 201 are provided with water cavities. Hollow rotating shafts 21 are provided on both sides of the forming roller 2 and the cooling roller 201 and are rotatably connected to the mounting plates 12. Water pipes 22 are rotatably and sealed to the hollow rotating shafts 21. The water pipes 22 at both ends of the forming roller 2 and the cooling roller 201 are used for water inlet and water outlet, respectively. Hot water and cold water are injected into the forming roller 2 and the cooling roller 201, respectively, through the hollow rotating shafts 21.

[0023] The height adjustment mechanism on the upper side of the support plate 1 can adjust the overall height of the device. This can be achieved by using cylinders at each of the four corners of the support plate 1, connected to the support frame 11, thereby adjusting the support frame 11 vertically. When film processing is required, hot and cold water are injected into the water chambers inside the forming roller 2 and cooling roller 201 via water pipes 22. The hollow rotating shaft 21 connects the water pipes 22 to the forming roller 2 and cooling roller 201. The film first contacts the surface of the forming roller 2, then moves over the upper side of the forming roller 2 and makes close contact with it. Because the forming roller 2 contains hot water and has a printed surface, thermal printing can be performed on the film. During the rotation of the forming roller 2, the film is transported to the cooling roller 201. Since the cooling roller 201 is filled with cold water, the film immediately comes into contact with the cooling roller 201 after the heat treatment. The film contacts the lower side of the cooling roller 201 and then moves out of the cooling roller 201 to enter the next process. The cooling roller 201 rapidly cools the film, thereby improving the flatness of the film. The continuous flow of hot and cold water can continuously exchange heat between the forming roller 2 and the cooling roller 201, ensuring that the forming roller 2 and the cooling roller 201 are always in a high temperature and low temperature state. This design can ensure the stability of the processing, and the structure is simple, allowing for rapid processing of the film. It is worth mentioning that: since both ends of the forming roller 2 and the cooling roller 201 are equipped with hollow rotating shafts 21 connected to water pipes 22, the forming roller 2 and the cooling roller 201 can be driven by setting a gear on the outer surface of the hollow rotating shaft 21 on one side, setting a motor on the mounting plate 12, and equipping the output shaft of the motor with a transmission gear that meshes with the gear, thereby driving the hollow rotating shaft 21 to rotate, thus driving the forming roller 2 and the cooling roller 201 to rotate. Alternatively, a transmission wheel driven by a motor can be closely contacted on the outer surface of the forming roller 2 and the cooling roller 201, and the motor is connected to the transmission wheel through the output shaft. The transmission wheel is in close contact with the forming roller 2 and the cooling roller 201, and the rotation of the transmission wheel can achieve the purpose of driving the forming roller 2 and the cooling roller 201 to rotate. In summary, the operator can select a suitable driving method to drive the forming roller 2 and the cooling roller 201 to rotate according to actual needs.

[0024] Mounting plate 12 is inlaid with bearing outer sleeve 3. One end of hollow rotating shaft 21 is connected to bearing outer sleeve 3. Bearing inner sleeve 31 is rotatably connected inside bearing outer sleeve 3. Bearing inner sleeve 31 is connected to water pipe 22. One end of water pipe 22 extends into the hollow rotating shaft 21 for rotatable sealing connection.

[0025] The hollow shaft 21 is connected to the bearing outer sleeve 3, and the bearing inner sleeve 31 is connected to the water pipe 22. Therefore, the hollow shaft 21 will not interfere with the water pipe 22 during rotation. When the water pipe 22 is connected to external water supply or water receiving equipment, the water pipe 22 will not rotate. It is worth mentioning that in actual operation, the water pipe 22 will be connected to the connector for external equipment. The connector can be fixed to the outer surface of the mounting plate 12 by screws or other means to further prevent the water pipe 22 from rotating.

[0026] A feeding mechanism is provided on the right side of the forming roller 2. The feeding mechanism includes two feeding rollers 32. Both ends of the two feeding rollers 32 are rotatably connected to the mounting plate 12 on the same side. The two feeding rollers 32 are arranged vertically, and the center position between the two feeding rollers 32 is at the same horizontal height as the center position of the shaft of the forming roller 2.

[0027] Before contacting the forming roller 2, the film can pass between the two feeding rollers 32. The feeding rollers 32 can guide the film. At the same time, the center position between the two feeding rollers 32 is designed to be at the same horizontal height as the center position of the forming roller 2 axis. After the film passes between the two feeding rollers 32, it bends upward to contact the outer surface of the forming roller 2, which can improve the contact efficiency between the film and the forming roller 2.

[0028] Both ends of the two feeding rollers 32 are rotatably connected to a first slider 33. Both mounting plates 12 are provided with a slide groove 34 that matches the first slider 33. The first slider 33 is slidably assembled in the slide groove 34. The first slider 33 can slide horizontally left and right in the slide groove 34. The first slider 33 is connected to a first cylinder 35. The first cylinder 35 is fixedly connected to the mounting plate 12.

[0029] The first slider 33 can slide horizontally left and right within the groove 34, and both ends of the feeding roller 32 are connected to the first slider 33. Therefore, when the first slider 33 slides to the right, it can drive the feeding roller 32 to move away from the forming roller 2. When the first slider 33 slides to the left, it can drive the feeding roller 32 to move closer to the forming roller 2. Thus, the contact angle between the film and the forming roller 2 can be adjusted. In addition, when the end of the film is initially passed between the two feeding rollers 32 to contact the forming roller 2, the distance between the feeding roller 32 and the forming roller 2 can be increased, which is convenient for the operator to manually pass the film. The design of the first cylinder 35 can control the left and right sliding of the feeding roller 32 through electrical control.

[0030] A material-supporting mechanism is provided on the lower side of the cooling roller 201. The material-supporting mechanism includes a material-supporting roller 4 located on the lower side of the cooling roller 201. A second slider 41 is rotatably mounted on both ends of the material-supporting roller 4. Sliding members 42 are fixedly connected to the inner sides of the two mounting plates 12. The second slider 41 is slidably connected to the sliding members 42. The second slider 41 is driven by a second cylinder 43 fixedly connected to the mounting plate 12.

[0031] During the contact process between the film and the cooling roller 201, the film can be tightly pressed against the cooling roller 201 by the action of the abutment roller 4, thereby improving the cooling effect of the cooling roller 201 on the film. The sliding member 42 is connected to the abutment roller 4. The design of the sliding member 42 and the second slider 41 being driven and connected to the second cylinder 43 can adjust the abutment roller 4's pressure on the film and also adjust the distance between the abutment roller 4 and the cooling roller 201, making it easier for the operator to initially pass the end of the film between the abutment roller 4 and the cooling roller 201.

[0032] The abutment roller 4 is offset towards the forming roller 2 from below the cooling roller 201. Driven by the second cylinder 43, the abutment roller 4 can move closer to or further away from the cooling roller 201. This offset design of the abutment roller 4 from below the cooling roller 201 guides the film and further improves the contact efficiency between the film and the cooling roller 201. After heat treatment, the film contacts the cooling roller 201 immediately for cooling.

[0033] The cooling roller 201 is equipped with receiving mechanisms on both sides. These mechanisms include two supports 44, each fixedly connected to a mounting plate 12. Receiving rollers 45 are rotatably connected to opposite sides of each support 44, with the horizontal center of the receiving rollers 45 higher than the horizontal center of the cooling roller 201. After the film is removed from the cooling roller 201, it bends upwards and exits from the top of the receiving rollers 45. This design increases the contact time between the film and the cooling roller 201, improving the film's cooling effect.

[0034] Several stabilizing bars 46 are provided between the two mounting plates 12. The design of the stabilizing bars 46 can improve the stability between the two mounting plates 12.

[0035] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A rapid cooling device for a high-flatness film casting machine, comprising a support plate, wherein a height adjustment mechanism is provided on the upper side of the support plate, and a support frame is provided on the upper side of the height adjustment mechanism, characterized in that: The support frame has mounting plates on both the front and rear sides. The two mounting plates drive the forming roller and cooling roller respectively from right to left. The outer surface of the forming roller has embossing. Both the forming roller and the cooling roller have water cavities. Both sides of the forming roller and the cooling roller have hollow rotating shafts that are rotatably connected to the mounting plates. The hollow rotating shafts are rotatably and sealed with water pipes. The water pipes at both ends of the forming roller and the cooling roller are used for water inlet and water outlet respectively. Hot water and cold water are injected into the forming roller and the cooling roller respectively through the hollow rotating shafts.

2. The rapid cooling device for a high-flatness film casting machine according to claim 1, characterized in that: The mounting plate is inlaid with a bearing outer sleeve, one end of the hollow rotating shaft is connected to the bearing outer sleeve, a bearing inner sleeve is rotatably connected inside the bearing outer sleeve, the bearing inner sleeve is connected to a water pipe, and one end of the water pipe extends into the hollow rotating shaft for rotatable sealing connection.

3. The rapid cooling device for a high-flatness film casting machine according to claim 1, characterized in that: A feeding mechanism is provided on the right side of the forming roller. The feeding mechanism includes two feeding rollers. Both ends of the two feeding rollers are rotatably connected to the mounting plate on the same side. The two feeding rollers are arranged vertically, and the center position between the two feeding rollers is at the same horizontal height as the center position of the forming roller shaft.

4. The rapid cooling device for a high-flatness film casting machine according to claim 3, characterized in that: Both ends of the two feeding rollers are rotatably connected to a first slider. Both mounting plates are provided with a groove that matches the first slider. The first slider is slidably assembled in the groove and can slide horizontally left and right in the groove. The first slider is connected to a first cylinder, and the first cylinder is fixedly connected to the mounting plate.

5. The rapid cooling device for a high-flatness film casting machine according to claim 1, characterized in that: The cooling roller is provided with a material-blocking mechanism on its lower side. The material-blocking mechanism includes a material-blocking roller located on the lower side of the cooling roller. Both ends of the material-blocking roller are rotatably equipped with second sliders. Sliding members are fixedly connected to the inner sides of the two mounting plates. The second slider is slidably connected to the sliding members. The second slider is driven by a second cylinder fixedly connected to the mounting plate.

6. The rapid cooling device for a high-flatness film casting machine according to claim 5, characterized in that: The abutting roller is offset to one side of the forming roller below the cooling roller. Under the driving action of the second cylinder, the abutting roller can move closer to the cooling roller or further away from the cooling roller.

7. A rapid cooling device for a high-flatness film casting machine according to claim 6, characterized in that: The cooling roller is provided with receiving mechanisms on the left and right sides. The receiving mechanism includes two brackets, which are fixedly connected to two mounting plates respectively. Receiving rollers are rotatably connected to the opposite side of the two brackets. The horizontal position of the center of the receiving roller shaft is higher than the horizontal position of the center of the cooling roller shaft.

8. The rapid cooling device for a high-flatness film casting machine according to claim 1, characterized in that: Several stabilizing bars are provided between the two mounting plates.

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