TWM593323U - Calendering plastic film triaxial surface winding device - Google Patents

Abstract

A calendering plastic surface winding device has three winding rolls in a single winder, wherein when a winding roll is winding, the other two winding rolls are in prepared position. The calender is used to press a molten plastic into a plastic film. A cooling device includes a cold pool that used to cool the plastic film to increase a transparency of the plastic film. The winder includes a first winding roll used to perform a first winding step to wind the plastic film; a pressing roll used to pressurize the winding plastic film thereby exhausting the gas; a second winding roll located on the first winding roll and used to immediately replace a position of the first winding roll after the first winding roll is completed the first winding step thereby performing a following second winding step; and a third winding roll moved to a position above the second winding roll when the second winding roll is perform on the second winding step.

Description

Triaxial surface winding device for calendered plastic film

This novel creation is about a three-axis surface winding device for calendered plastic film.

Calendering is the use of strong shearing force between rollers and the corresponding processing temperature, so that the viscous material is squeezed and extended many times, and finally becomes a kind of film product with width and thickness processing method.

Generally speaking, the film formed by the calendering method will then be wound into a cylindrical column by a winder to facilitate storage and handling. However, when the winding step is completed, the replacement of the winding mandrel is not easy, resulting in the generation of too many defective films, which in turn consumes a large amount of raw materials and increases unnecessary manufacturing costs.

The new creation provides a rolling surface rolling device for plastics, which has three winding mandrels in a single winding machine at the same time. When one winding mandrel performs a winding action, the other two winding mandrels are In the ready position. Therefore, the new creation can improve the replacement efficiency of the winding mandrel, thereby avoiding the loss of original materials and reducing the manufacturing cost.

This new creation provides a rolling surface rolling device for plastics, which has three winding mandrels in a single winding machine. One of the winding mandrels is in the winding operation, and the other two winding mandrels are in Ready position. The calender is used to press molten plastic into plastic film. The cooling device includes a immersion pool, which is used to cool the plastic film to increase the transparency of the plastic film. The winding machine includes: a first winding mandrel, a pressure roller, a second winding mandrel, and a third winding mandrel. The first winding mandrel is used to perform the first winding step to wind up the plastic film. The pressure roller is used to pressurize the plastic film being wound to discharge air. The second take-up mandrel is located above the first take-up mandrel and is used to immediately replace the position of the first take-up mandrel when the first take-up mandrel completes the first take-up step for the subsequent second take-up step . The third winding mandrel moves to the second winding mandrel when the second winding mandrel performs the second winding step.

In an embodiment of the invention, the third winding mandrel mentioned above further includes a position for replacing the second winding mandrel immediately when the second winding mandrel completes the second winding step for subsequent The third winding step.

In an embodiment of the present invention, the temperature of the immersion pool is between 20°C and 30°C.

In an embodiment of the present invention, the pressure roller described above applies a pressure between 1 kg/cm ² and 5 kg/cm ² to the plastic film.

In an embodiment of the invention, the above-mentioned rolled plastic surface winding device further includes an extrusion water removal device disposed between the cooling device and the winding machine.

In an embodiment of the invention, the above-mentioned rolled plastic surface winding device further includes a drying and cooling device disposed between the squeeze water removal device and the winding machine.

Based on the above, the calendered plastic surface rewinding device created by the novel has three rewinding mandrels in a single rewinding machine, one of the rewinding mandrels and the other two rewinding mandrels during the rewinding operation It is in the ready position. Therefore, the new creation can improve the replacement efficiency of the winding mandrel, thereby avoiding the loss of original materials and reducing the manufacturing cost. In addition, the rolling device for the rolled plastic surface created by the new type also cools the plastic film by the immersion pool to increase the transparency of the plastic film.

In order to make the above-mentioned features and advantages of the creation of the new model more obvious and understandable, the embodiments are specifically described below and described in detail in conjunction with the accompanying drawings.

Refer to the diagram of this embodiment to explain the new creation more fully. However, the novel creation can also be embodied in various forms, and should not be limited to the embodiments described herein.

FIG. 1 is a schematic cross-sectional view of a calendered plastic surface winding device according to an embodiment of the present invention.

Referring to FIG. 1, the rolled plastic surface winding device 10 of this embodiment includes a calender 100, a cooling device 200, and a coiler 300. Specifically, the calender 100 includes a plurality of calender rolls 110. As shown in FIG. 1, the calender roll 110 includes a first calender roll 112, a second calender roll 114, a third calender roll 116 and a fourth calender roll 118. The rotation direction of the first calender roll 112 is different from the rotation direction of the second calender roll 114, the rotation direction of the second calender roll 114 is different from the rotation direction of the third calender roll 116, and the rotation direction of the third calender roll 116 is different from the fourth The rotation directions of the calender rollers 118 are different, whereby the molten plastic P1 conveyed by the feed conveyor 120 is compressed into a plastic film P2. In some embodiments, the feed conveyor 120 may be an extruder, which heats and melts solid plastics (such as PVC, PP, PU, PE, and other similar polymer materials), and then melts the molten plastic P1 The injection molding head is injected between the first calender roll 112 and the second calender roll 114 to perform a calendering process. In other embodiments, the first calender roll 112, the second calender roll 114, the third calender roll 116, and the fourth calender roll 118 have different temperatures. In an alternative embodiment, the temperature of the first calender roll 112 is greater than the temperature of the second calender roll 114, the temperature of the second calender roll 114 is greater than the temperature of the third calender roll 116, and the temperature of the third calender roll 116 is greater than the temperature of the fourth calender roll The temperature of the roller 118, thereby simultaneously cooling the plastic film P2 during the calendering process. For example, the temperature of the first calender roll 112 is about 175°C, the temperature of the second calender roll 114 is about 173°C, the temperature of the third calender roll 116 is about 171°C, and the temperature of the fourth calender roll 118 The temperature is about 144°C, but this new creation is not limited to this, the temperature of the calender rolls can be adjusted according to actual needs. In addition, although FIG. 1 depicts four calender rolls, the creation of this new model is not limited to this. In other embodiments, the number and configuration of the calender rolls can be adjusted according to actual needs.

As shown in FIG. 1, the plastic film P2 can be cooled by the temperature of the plastic film P2 via the cooling device 200 and can be taken up by the reel 300. It is worth noting that in some embodiments, the cooling device 200 may be a immersion pool, which contains cooling water with a water temperature between 20°C and 30°C, for example, 25°C. When the plastic film P2 after the calendering process is led into the immersion pool, it is rapidly cooled and hardened and shaped, and the upper and lower surfaces will be subjected to the same degree of surface stress, resulting in a plastic with no surface flow marks and uniform haze.膜P3. That is, the transparency of the plastic film P3 passing through the cooling device 200 is greater than the transparency of the plastic film P2 not passing through the cooling device 200.

In addition, in some embodiments, the rolled plastic surface winding device 10 may include an extrusion water removal device 400 and a drying and cooling device 500 between the cooling device 200 and the winding machine 300. Specifically, the squeezing and dewatering device 400 is composed of a plurality of pairs of soft rubber wheels and metal wheels that are arranged up and down with reserved channels between them, and are arranged in the process after the cooling device 200. When the plastic film P3 passing through the cooling device 200 and maintained in the forward state passes through the nip between the pair of flexible rubber wheels and the metal wheel arranged up and down, the pair of flexible rubber wheels and the metal wheel squeeze the plastic passing through The surface of the film P3 is squeezed to remove water quickly to remove the water on the surface of the plastic film P3.

In an alternative embodiment, the squeezing and dewatering device 400 can also be used with a wiper blade, an air blade, a vacuum suction wheel, or a combination thereof. That is to say, the surface of the plastic film P3 can be selectively passed through a wiper blade, wind, etc. after removing most of the water on the surface of the plastic film P3 through the squeeze water removal device 400 (also called the first water removal step). Knife, vacuum suction wheel or their combination (also called the second dewatering step) further removes water. After the above two water removal steps, the surface of the plastic film P4 passing through the squeeze water removal device 400 may contain only a small amount of water.

In addition, in another embodiment, the drying and cooling device 500 may include multiple sets of heating metal wheels and multiple sets of cooling metal wheels. The heating or cooling metal wheel may have functions of removing water, eliminating stress, and controlling the temperature before the plastic film is taken up. In other embodiments, the heating metal wheel is disposed in the process after squeezing the water removal device 400, and the cooling metal wheel is disposed in the process after the heating metal wheel. In other words, it can be heated before cooling, but this new creation is not limited to this. In an alternative embodiment, the wheel surface of the heating metal wheel and the wheel surface of the cooling metal wheel may each be coated with a water-absorbing material. The water-absorbing material can be used to perform the third water removal step, and can also be used to eliminate the surface stress of the upper and lower surfaces of the plastic film P4. Therefore, after the above three water removal steps, the surface of the plastic film P5 passing through the drying and cooling device 500 is completely dry and has no residual moisture or only a very small amount of moisture.

As shown in FIG. 1, the winding machine 300 includes a first winding mandrel 310, a second winding mandrel 312, a third winding mandrel 314, and a pressure roller 316. The first winding mandrel 310 is used to perform the first winding step to wind the plastic film P5. When the first winding mandrel 310 winds the plastic film P5 at a high speed, the pressing roller 316 may apply a pressure of about 1 kg/cm ² to 5 kg/cm ² on the surface of the plastic film P5 being wound. This pressure can evenly press the surface of the plastic film P5 to expel the air in the middle of the winding layer of the plastic film P5 that is in the winding stage, so as to prevent the air from being caught in the middle of the winding layer of the plastic film P5. In this case, after the plastic film P5 can be rolled up into a cylindrical shape that is convenient for storage and transportation, even if it is stored for a long time, the surface of the plastic film P5 remains flat without bubbles and dents.

It is worth noting that when the first winding mandrel 310 completes the first winding step, the pressure roller 316 will move away from the first winding mandrel 310 upward along the first direction D1, and the first winding mandrel The shaft 310 will move to the right along the second direction D2. At this time, the second winding mandrel 312 located on the first winding mandrel 310 will move along the third direction D3 and immediately replace the first winding mandrel 310 For the second rewinding step. That is to say, when the winding machine 300 continues to perform the winding step, the alternating time between the first winding step and the second winding step is very short, so there will not be too many bad films, which can avoid the loss of the original material And reduce manufacturing costs.

In addition, when the second winding mandrel 312 is replaced to the position of the first winding mandrel 310 and the second winding step is performed, the third winding mandrel 314 moves to the left in the fourth direction D4 to the second winding Take the original position of the mandrel 312. During the second winding step, the pressure roller 316 may apply a pressure of about 1 kg/cm ² to 5 kg/cm ² on the surface of the plastic film P5 being wound, thereby discharging that it is in the winding stage The air in the middle of the roll of plastic film P5. At this time, the third winding mandrel 314 is located above the second winding mandrel 312, which can be used to immediately replace the position of the second winding mandrel 312 when the second winding mandrel 312 completes the second winding step For the subsequent third winding step. In other words, the calendered plastic surface winding device 10 of the present invention can improve the replacement efficiency of the winding mandrel by moving at least three winding mandrels, thereby avoiding the loss of original materials and reducing manufacturing costs. In other embodiments, the first direction D1, the second direction D2, the third direction D3, and the fourth direction D4 are different from each other.

In addition, the calendered plastic surface winding device 10 of the present invention can also optionally include an embossing wheel set (not shown) configured in the process before the cooling device 200. The embossing wheel set can be used to impart the embossing effect to the plastic film P2 processed and transported by the calender 100.

In summary, the calendered plastic surface winding device created by the new model has three winding mandrels in a single winding machine at the same time, and one of the winding mandrels takes up two other windings during the winding operation. The mandrel is in the ready position. Therefore, the new creation can improve the replacement efficiency of the winding mandrel, thereby avoiding the loss of original materials and reducing manufacturing costs. In addition, the calendered plastic surface winding device of the new creation also cools the plastic film through the immersion pool to increase the transparency of the plastic film.

Although the new creation has been disclosed as above with examples, it is not intended to limit the creation of the new creation. Anyone with ordinary knowledge in the technical field of the subject can make some changes and without departing from the spirit and scope of the creation of the new creation. Retouching, so the scope of protection of this new creation shall be subject to the scope defined in the appended patent application.

10: Rolling device for rolled plastic surface 100: Calender 110: calender roll 112: The first calender roll 114: second calender roll 116: third calender roll 118: Fourth calender roll 120: feeding conveyor 200: cooling device 300: Coiler 310: The first take-up mandrel 312: The second take-up mandrel 314: Third reel mandrel 316: Pressure roller 400: Extrusion water removal device 500: drying and cooling device D1: First direction D2: Second direction D3: Third direction D4: Fourth direction P1: molten plastic P2, P3, P4, P5: plastic film

FIG. 1 is a schematic cross-sectional view of a calendered plastic surface winding device according to an embodiment of the present invention.

10: Rolling device for rolled plastic surface

100: Calender

110: calender roll

112: The first calender roll

114: second calender roll

116: third calender roll

118: Fourth calender roll

120: feeding conveyor

200: cooling device

300: Coiler

310: The first take-up mandrel

312: The second take-up mandrel

314: Third reel mandrel

316: Pressure roller

400: Extrusion water removal device

500: drying and cooling device

D1: First direction

D2: Second direction

D3: Third direction

D4: Fourth direction

P1: molten plastic

P2, P3, P4, P5: plastic film

Claims (6)

A rolling device for rolled plastic surface, including: Calender, used to press molten plastic into plastic film; A cooling device, including a immersion tank, used to cool the plastic film to increase the transparency of the plastic film; and Coiling machine, including: A first winding mandrel for performing the first winding step to wind the plastic film; A pressure roller, which is used to pressurize the plastic film during winding to discharge air; A second take-up mandrel, located above the first take-up mandrel, for immediately replacing the position of the first take-up mandrel when the first take-up mandrel completes the first take-up step For the subsequent second winding step; and The third winding mandrel is used to move above the second winding mandrel when the second winding mandrel performs the second winding step. The calendered plastic surface winding device as described in item 1 of the patent application scope, wherein the third winding mandrel further includes a substitute for the second winding mandrel to immediately replace the second winding step The position of the second winding mandrel for the subsequent third winding step. The calendered plastic surface winding device as described in item 1 of the patent application range, wherein the temperature of the immersion pool is between 20°C and 30°C. The rolled plastic surface winding device as described in item 1 of the patent application range, wherein the pressure roller applies a pressure between 1 kg/cm ² and 5 kg/cm ² to the plastic film. The rolling device for the rolled plastic surface as described in item 1 of the patent application scope further includes an extrusion water removal device disposed between the cooling device and the winding machine. The rolling device for the rolled plastic surface as described in item 5 of the patent application scope further includes a drying and cooling device disposed between the squeezing dewatering device and the coiler.

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