CN203664125U - Coating machine for coating thin film - Google Patents

Abstract

The utility model discloses the creation relates to film coating equipment technical field, especially relates to a coating machine for coating film. Its structure is including unwinding device, coating unit, drying device and the coiling mechanism that sets gradually, drying device includes oven, its characterized in that: drying device with be provided with the flattening device between the coiling mechanism, the flattening device is including flattening the deflector roll and flattening the adjustment roller, the flattening adjustment roller set up in the top of flattening the deflector roll, the film passes the flattening deflector roll with flatten between the adjustment roller, the flattening deflector roll with distance between the flattening adjustment roller is less than or equal to the thickness of film, flatten the adjustment roller with it is adjustable to flatten distance between the deflector roll, flatten the deflector roll and/or it is equipped with heating device to flatten the adjustment roller. The utility model discloses the roughness of film can effectively be improved to the flattening device that sets up on the coating machine of creation, corrects the deformation of film, has guaranteed the quality of product, promotes the yields of production and processing.

Description

A coating machine for coating thin films

technical field

The invention relates to the technical field of film coating equipment, in particular to a coating machine for coating films. the

Background technique

The application of coating machine is very extensive. Coating lamination equipment is mainly used for gluing coating and lamination processing of various roll substrates such as plastic film, paper, anodized aluminum, cloth and leather. It is widely used in various packaging fields and has broad development prospects. In the increasingly fierce market competition, the quality of products is the basis for the survival and development of enterprises. Any defects or defects in products will reduce the competitiveness of products and affect the viability of enterprises. the

At present, the film (PET polyester film) produced by the existing coating machine needs to be dried in an oven after being coated in the production process, because the polyester film itself has a good Ductility, when the thickness of the polyester film produced is relatively thin, during the drying process of the polyester film, the heating of the polyester film by the oven will cause the film to produce linear concave-convex deformation, and the product in serious condition must be scrapped, and This deformation cannot be eliminated by adjusting the conveying tension or conveying speed of the drying tunnel. The dried polyester film needs to be cooled and shaped, and the deformed polyester film is then shaped by the cooling roller device. After the polyester film is shaped, no matter how to adjust the tension of unwinding and winding, the unevenness on the polyester film cannot be improved. out of shape. the

Since most of the film products produced by the coating machine will be used in the printing industry, and the printing industry has extremely high requirements on the flatness of the product. If the flatness of the product is not enough, it is easy to cause defects such as shadows or black lines on the surface of the printed matter. the

Contents of the invention

The purpose of the invention is to avoid the above disadvantages in the prior art and provide a coating machine which can effectively prevent the deformation of the film product and ensure the flatness of the film product. the

The purpose of the invention is realized through the following technical solutions:

Provide a kind of coater that is used for coating film, its structure comprises unwinding device, coating device, drying device and winding device that are arranged in sequence, described drying device comprises oven, and described drying device and described A flattening device is arranged between the winding devices, and the flattening device includes a flattening guide roller and a flattening adjustment roller, and the flattening adjustment roller is arranged above the flattening guide roller, and the film passes through the Between the flattening guide roller and the described flattening adjustment roller, the distance between the described flattening guide roller and the described flattening adjustment roller is less than or equal to the thickness of the film, and the flattening adjustment roller and the described flattening adjustment roller The distance between the rollers is adjustable, and the rolling guide rolls and/or the rolling adjustment rolls are provided with a heating device.

Wherein, a sizing device is also provided between the flattening device and the winding device, and the sizing device includes an upper sizing roller and a lower sizing roller arranged side by side, and the film passes through the upper sizing roller and the lower sizing roller. roll. the

Wherein, the upper shaping roller and the lower shaping roller are mirror shaped rollers. the

Wherein, the cross-sectional diameter of the shaping roller is greater than or equal to 0.5m. the

Wherein, a cooling device is provided between the sizing device and the winding device. the

Wherein, the guide rollers used to push the film forward between the flattening device and the cooling device are all mirror guide rollers. the

Wherein, the flattening guide roller is a guide roller at the rearmost end of the oven, the heating device is the oven, and the oven heats the flattening guide roller. the

Wherein, the heating device is arranged on the smoothing adjustment roller, and is used for heating the smoothing adjustment roller. the

Wherein, the flattening and adjusting roller is a colloidal flattening and adjusting roller with a temperature resistance of 200°C. the

Wherein, the rolling device is provided with a regulating valve for adjusting the distance between the rolling guide roller and the rolling adjustment roller. the

Beneficial effects created by the present invention:

A coating machine for coating films created by the present invention is provided with a flattening device sequentially between the drying device and the winding device. After the film passes through the drying device and is deformed by heat, the flattening device The film is continuously heated to maintain good ductility of the film, and then the film in this state is sent between the leveling guide roller and the leveling adjustment roller of the leveling device for leveling and correction, so that the concave-convex deformed film can be restored to be flat and smooth , showing a mirror effect. The flattening device provided on the coating machine of the present invention can effectively improve the flatness of the film, correct the deformation of the film, ensure the quality of the product, and improve the yield rate of production and processing.

Description of drawings

The invention is further described by using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention. For those of ordinary skill in the art, on the premise of not paying creative work, they can also be obtained according to the following drawings: Additional drawings. the

Fig. 1 is a structural schematic diagram of a coating machine for coating thin films created by the present invention. the

Reference signs:

1- Oven,

2- Flatten guide rollers,

3- Flatten the adjusting roller,

4- regulating valve,

5- Heating device,

6- Shaping rollers,

7- mirror guide roller,

8- Film.

Detailed ways

The present invention is further described in conjunction with the following examples. the

A coating machine for coating film created by the present invention is used for coating film 8, and the coating machine includes an unwinding device, a coating device, a drying device, a flattening device, Sizing device, cooling device and winding device. the

The drying device includes an oven 1, and the oven 1 is generally provided with several sections. the

The rear side of the oven 1 is a flattening device. The flattening device includes a flattening guide roller 2, a flattening adjustment roller 3 and a heating device 5. The flattening guide roller 2 and the flattening adjustment roller 3 are arranged side by side in parallel, and the flattening adjustment roller 3 is specifically It is arranged above the flattening guide roller 2, the flattening guide roller 2 is a driving roller, the flattening adjustment roller 3 is a driven roller, a gap is arranged between the flattening guide roller 2 and the flattening adjustment roller 3, and the film 8 is The gap goes through. The heating device 5 is used for heating the flattening guide roller 2, or for flattening the adjustment roller 3, and can also heat the flattening guide roller 2 and the flattening adjustment roller 3 at the same time. the

Preferably, the flattening guide roller 2 is a guide roller at the end of the last oven 1, and the oven 1 is used as the heating device 5 to heat the flattening guide roller 2, and the flattening adjustment roller 3 is preferably a rubber roller. Utilize the heat of baking oven 1 itself to heat rolling guide roller 2, and rolling guide roller 2 does not need additional heating, can save energy, but, for some thicker films, only heat with baking oven 1, the rolling device Heat may be insufficient, at this moment can be heated by arranging heating device 5 on the leveling adjustment roller 3, to provide enough heat for the leveling device. the

Rolling device also comprises the regulating valve 4 that is used to regulate the gap height between rolling guide roller 2 and rolling adjustment roller 3, because rolling guide roller 2 preferably adopts the guide roller of the tail end of last joint baking oven 1, so adjust Valve 4 is only used to adjust the leveling adjustment roller 3 . the

Before flattening the film 8, adjust the gap height between the flattening guide roller 2 and the flattening adjustment roller 3 through the regulating valve 4, so that the gap height is less than or equal to the thickness of the film 8, or directly adjust the flattening adjustment roller 3 and the flattening adjustment roller 3. The rolling guide roller 2 is bonded, and when the film 8 passes through the gap, the film 8 is heated and squeezed, and the film 8 is quickly rolled flat to restore flatness. the

The regulating valve 4 of the leveling adjustment roller 3 is installed outside the oven 1, which is convenient for adjusting the pressure at both ends of the leveling adjustment roller 3 at any time, and timely correcting the flatness of the film 8. The thread of the regulating valve 4 must be fine and precise to ensure that the leveling adjustment roller 3 is up and down The stroke of the movement is precise. the

Since the leveling adjustment rollers 3 are arranged side by side on the top of the leveling guide roller 2, when the leveling guide roller 2 is heated by the oven 1, the maximum internal temperature of the oven 1 is 150°C, so the leveling adjustment roller 3 is preferably high temperature resistant 200°C. Colloid above ℃ will flatten the adjustment roller. the

After the film 8 is flattened, before cooling, the film 8 is easily deformed, so a setting device is arranged behind the flattening device. The sizing device includes two sizing rolls 6 arranged side by side, namely an upper sizing roll and a lower sizing roll, and the film 8 passes between the upper sizing roll and the lower sizing roll. Both the upper shaping roller and the lower shaping roller are preferably mirror-surface shaping rollers, and the cross-sectional diameter of the shaping roller 6 is preferably greater than or equal to 0.5 m. When the film 8 passes through the sizing device, the large-diameter sizing roller 6 can pre-cool the film 8 . the

After being shaped, the film 8 immediately enters the cooling device. Since the heated extruded film 8 has not been cooled and shaped, the film 8 is easily deformed at this time. Therefore, before entering the cooling device, the guide roller that drives the film 8 must be made of aluminum. The guide rollers are changed to mirror guide rollers, that is, the guide rollers used to push the film 8 forward between the flattening device and the cooling device are all mirror guide rollers to reduce friction and maintain flatness. The bearings of the mirror guide rollers need Lubricate completely. The water temperature of the cooling device must be kept at 18°C, and it can enter the winding device after passing through the cooling device. the

In order to save cost, the sizing device and the cooling device can be integrated, that is, cooling while sizing, which can save a set of devices. the

Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention, rather than to limit the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art Personnel should understand that the technical solution of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solution of the present invention. the

Claims (10)

1. a coating machine for coating film, its structure comprises unwinding device, coating device, drying device and winding device arranged in sequence, and described drying device comprises baking oven, it is characterized in that: described A flattening device is provided between the drying device and the winding device, and the flattening device includes a flattening guide roller and a flattening adjustment roller, and the flattening adjustment roller is arranged above the flattening guide roller, The film passes between the described flattening guide rollers and the described flattening adjustment rollers, the distance between the described flattening guide rollers and the described flattening adjustment rollers is less than or equal to the thickness of the film, and the flattening adjustment rollers and the flattening adjustment rollers The distance between the rolling guide rollers is adjustable, and the rolling guide rollers and/or the rolling adjustment rollers are provided with a heating device. 2. A kind of coating machine for coating film according to claim 1, characterized in that: a sizing device is also arranged between the rolling device and the winding device, and the sizing device includes parallel An upper shaping roller and a lower shaping roller are provided, and the film passes through the upper shaping roller and the lower shaping roller. 3. A coating machine for coating film according to claim 2, characterized in that: the upper shaping roller and the lower shaping roller are mirror shaped rollers. 4. A coating machine for coating films according to claim 2, characterized in that: the cross-sectional diameter of the shaping roller is greater than or equal to 0.5m. 5 . A coating machine for coating films according to claim 2 , characterized in that: a cooling device is arranged between the sizing device and the winding device. 6 . 6 . A coating machine for coating films according to claim 5 , wherein the guide rollers used to push the film forward between the flattening device and the cooling device are all mirror guide rollers. 7. A kind of coating machine for coating film according to claim 1, it is characterized in that: described flattening guide roller is a guide roller at the rear end of described oven, and described heating device is described an oven that heats the smoothing guide rolls. 8 . The coating machine for coating film according to claim 1 , characterized in that: the heating device is arranged on the smoothing adjustment roller for heating the flattening adjustment roller. 9 . 9. A coating machine for coating film according to claim 1, characterized in that: said flattening adjustment roller is a colloidal flattening adjustment roller with a temperature resistance of 200°C. 10. A kind of coating machine for coating film according to claim 1, it is characterized in that: described flattening device is provided with and is used for adjusting described flattening guide roller and described flattening adjusting roller Distance regulating valve.