CN116728801A - Door steel plate water coating coating system and coating method - Google Patents

Abstract

The invention relates to the technical field of door steel plate coating, in particular to a door steel plate water coating film coating system and a film coating method; the device comprises a placing mechanism, wherein a gluing section, a heating section, a laminating section, a water spraying section and a water blowing section are sequentially arranged above the placing mechanism from left to right, and the placing mechanism is used for placing a door steel plate to be laminated; the PVC film is adhered to the door steel plate through the cooling film laminating roller in the film laminating section, the heated door steel plate is cooled for the first time, and then the second cooling is carried out through the water spraying section, so that the situation that the color of the PVC film is greatly changed due to continuous hot pressing is avoided, and the 3D surface texture is lost is avoided. The water temperature in the cooling film coating roller is controlled within 40-60 ℃, so that the cooling effect is ensured, meanwhile, the pressure of the cooling film coating roller on the door steel plate is controlled to be less than or equal to 4KPa, the film coating speed is controlled to be less than or equal to 40HZ, and the film coating effect is ensured.

Description

Door steel plate water coating coating system and coating method

Technical field

The present invention relates to the technical field of door steel plate coating, and in particular to a door steel plate water coating coating system and a coating method.

Background technique

In the existing technology, the technology of coating steel doors usually adopts high-temperature adhesive coating technology. The coating process is generally: process preparation → installation of PVC film roller → coating of adhesive → drying → setting of process parameters (Drying tunnel temperature and hot pressing temperature, pressure, speed) → Trial lamination → Sampling inspection → Formal lamination → Rewinding or shaping and segmentation. The hot pressing temperature is adjusted according to the thickness of the film, surface quality, climate change, etc., and should generally be controlled at 60 to 80°C. However, continuous hot pressing can easily cause large changes in the color of the PVC film, resulting in the loss of 3D surface texture.

Based on this, the applicant considered designing a door steel plate water-coated coating system and coating method that can retain the texture and color of the original PVC film to the greatest extent possible after coating.

Contents of the invention

In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by the present invention is: how to provide a door steel plate water-coated coating system and coating method that can retain the texture and color of the original PVC film to the greatest extent after coating.

In order to solve the above technical problems, the present invention adopts the following technical solutions:

The door steel plate water coating system includes a placement mechanism. A glue coating section, a heating section, a coating section, a water spray section and a water blowing section are arranged above the placement mechanism from left to right. The placement mechanism is Place the door steel plate to be coated;

The glue coating section includes a glue coating roller, which is in contact with the top side of the door steel plate to be coated, glues the door steel plate and drives it to move to the right;

The heating section is used to heat the glued door steel plate;

The coating section includes a cooling coating roller. The cooling coating roller contacts the top side of the heated door steel plate to coat the door steel plate and drive it to move to the right. The cooling coating roller is filled with Cooling water;

The water spray section is used to spray cooling water on the coated door steel plate;

The water blowing section is used to blow away the cooling water on the door steel plate.

The working principle and advantages of the door steel plate water coating system of this technical solution are:

The door steel plate placed on the placement mechanism is processed sequentially through the gluing section, heating section, film coating section, water spray section and water blowing section from left to right; first, when the gluing roller in the gluing section rotates Drive the door steel plate to be coated to move to the heating section, and apply glue to the door steel plate to be coated; then heat the glued door steel plate through the heating section to heat the glue on the door steel plate to increase the viscosity of the glue; The heated door steel plate enters the coating section. The cooling coating roller in the coating section coats the top side of the door steel plate with glue attached and drives the door steel plate to move to the water spray section. Since the cooling coating roller is injected with cooling inside Water, the cooling coating roller cools the door steel plate for the first time while coating, to prevent the door steel plate that has been coated from continuing to be in a high temperature state; after the coating is completed, it enters the water spray section, and the water spray section passes towards the film to complete the coating The door steel plate is sprayed with cooling water to cool the door steel plate for the second time. The door steel plate cooled by the water spray enters the water blowing section for water blowing treatment, and the cooling water on the door steel plate is blown away to complete the processing; it is cooled and coated through the coating section. While the film roller attaches the PVC film to the door steel plate, it cools the heated door steel plate for the first time, and then cools it for the second time through the water spray section to avoid continuous hot pressing that may cause major changes in the color of the PVC film, causing 3D surface texture is lost.

The water spray section is used to spray cooling water on the coated door steel plate;

The water blowing section is used to blow away the cooling water on the door steel plate.

Further, the placement mechanism is a roller frame, and a number of movably connected movable rollers are provided on the top side of the roller frame.

Further, the gluing section includes two gluing rollers.

Furthermore, the glue coating section further includes a glue dispensing device, which is disposed above the two glue coating rollers.

Further, the heating section includes an electric heating box.

Further, the coating section includes a PVC film supply roller and a protective film supply roller that supplies film to the cooling coating roller.

Further, the water spray section includes a water jet, and the water blowing section includes a water blowing device.

Furthermore, an infrared thermometer is provided between the water spray section and the film coating section.

The door steel plate water coating method includes the following steps:

Step 1: Place the door steel plate on the placement mechanism, then introduce the end of the door steel plate under the rubber coating roller, apply glue to the top side of the door steel plate through the rubber coating roller, and drive the rubber coating roller to move to the right heating section;

Step 2: The heating section heats the glued door steel plate and drives the door steel plate to continue moving to the right until the end of the door steel plate enters under the cooling coating roller, and the top side of the door steel plate is coated through the cooling coating roller. And carry out cooling, the water temperature in the cooling coating roller is controlled within 40℃~60℃, and the pressure of the cooling coating roller on the door steel plate is controlled to ≤4KPa, and the coating speed is ≤40HZ;

Step 3: Drive the coated door steel plate into the water spray section, and spray cooling water on the door steel plate through the water spray section;

Step 4: Drive the door steel plate that has passed through the water spray section into the water blowing section, and blow off the cooling water on the door steel plate through the water blowing section;

Step 5: Remove the door steel plate that has passed through the water blowing section from the placement mechanism to complete processing.

The working principle and advantages of the water-coated door steel plate coating method of this technical solution are:

The door steel plate placed on the placement mechanism is processed through the glue coating section, heating section, coating section, water spray section and water blowing section from left to right; the cooling coating roller in the coating section adheres PVC to the door steel plate The heated door steel plate is cooled for the first time while the film is being filmed, and then cooled for the second time through the water spray section to avoid continuous hot pressing that may cause major changes in the color of the PVC film and cause the loss of 3D surface texture; cooling coating The water temperature in the film roller is controlled within 40℃~60℃ to ensure the cooling effect. At the same time, the pressure of the cooling film roller on the door steel plate is controlled to ≤4KPa, and the coating speed is ≤40HZ to ensure the coating effect.

Furthermore, the heating section adopts different temperatures according to different thicknesses of the door steel plate. The thinner the door steel plate, the lower the heating temperature of the heating section.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the door steel plate water coating system according to the embodiment of the present invention;

In the above drawings: 10. Door steel plate;

100. Roller frame; 110. Movable roller;

210. Glue coating roller; 220. Glue dispensing device;

300. Electric heating box;

410. Cooling coating roller; 420. PVC film supply roller; 421. PVC film; 430. Protective film supply roller; 431. Protective film;

500. Infrared thermometer;

600. Water jet;

700. Water blowing device.

Detailed ways

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inside", "Outside", "Clockwise", "Counterclockwise", "Axis" The orientations or positional relationships indicated by "radial direction", "circumferential direction", etc. are based on the orientations or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply the device or device referred to. Elements must have a specific orientation, be constructed and operate in a specific orientation and therefore are not to be construed as limitations of the invention.

Referring to Figure 1, this embodiment provides a door steel plate water coating system, which includes a placement mechanism. Above the placement mechanism, a glue coating section, a heating section, a coating section, a water spray section and a water blowing section are arranged in sequence from left to right. Section, the placement mechanism is used to place the door steel plate 10 to be coated;

The glue coating section includes a glue coating roller 210. The glue coating roller 210 is in contact with the top side of the door steel plate 10 to be coated, glues the door steel plate 10 and drives it to move to the right;

The heating section is used to heat the glued door steel plate 10;

The coating section includes a cooling coating roller 410. The cooling coating roller 410 is in contact with the top side of the heated door steel plate 10, coating the door steel plate 10 and driving it to move to the right. The cooling coating roller 410 is filled with cooling water inside. water;

The water spray section is used to spray cooling water on the coated door steel plate 10;

The water blowing section is used to blow off the cooling water on the door steel plate 10 .

In this embodiment, the door steel plate 10 placed on the placement mechanism is processed sequentially through the glue coating section, heating section, film coating section, water spray section and water blowing section from left to right; first, the door steel plate 10 placed on the placement mechanism is processed through the glue coating section. When the glue coating roller 210 rotates, the door steel plate 10 to be coated is driven to move toward the heating section, and glue is applied to the door steel plate 10 to be coated; the glued door steel plate 10 is then heated through the heating section to heat the door steel plate. 10 to improve the viscosity of the glue; the heated door steel plate 10 enters the coating section, and the cooling coating roller 410 of the coating section coats the top side of the door steel plate 10 with glue attached and drives the door steel plate 10 to The water spray section moves. Since the cooling coating roller 410 is filled with cooling water, the cooling coating roller 410 cools the door steel plate 10 for the first time while coating, preventing the coated door steel plate 10 from continuing to be in a high temperature state. After the film coating is completed, it enters the water spray section. The water spray section cools the door steel plate 10 for the second time by spraying cooling water towards the door steel plate 10 after the film coating is completed. The door steel plate 10 cooled by water spray enters the water blowing section for blowing. Water treatment, blowing off the cooling water on the door steel plate 10 to complete the processing; while the PVC film 421 is attached to the door steel plate 10 through the cooling film coating roller 410 in the film coating section, the heated door steel plate 10 is cooled for the first time. Then, a second cooling is performed through the water spray section to avoid continuous hot pressing that may cause major changes in the color of the PVC film and cause the loss of 3D surface texture.

The water spray section is used to spray cooling water on the coated door steel plate 10;

The water blowing section is used to blow off the cooling water on the door steel plate 10 .

Preferably, as shown in Figure 1, the placement mechanism is a roller frame 100. The top side of the roller frame 100 is provided with a number of movably connected movable rollers 110. The bottom side of the door steel plate 10 placed on the roller frame 100 is in contact with the movable rollers. The rollers 110 are in contact, and the flexibly rotating rollers can allow the door steel plate 10 to move easily on the roller frame 100.

Preferably, as shown in Figure 1, the gluing section includes two gluing rollers 210. The two gluing rollers 210 apply glue to the door steel plate 10 in sequence to ensure that a uniform and sufficient amount of glue can be attached to the top side of the door steel plate 10. Glue; the glue coating section also includes a glue dispensing device 220. The glue dispensing device 220 is arranged above the two glue coating rollers 210. The two glue coating rollers 210 are spaced apart and installed close to each other. The glue dispensing device is arranged between the two. 220 can dispense glue to two glue coating rollers 210 at the same time.

Preferably, as shown in Figure 1, the heating section includes an electric heating box 300. The electric heating box 300 can directly use equipment that converts electric energy into thermal energy in the existing technology. The electric heating box 300 uses the heat energy converted from electric energy to heat the door steel plate below. 10 Perform heat treatment.

Preferably, as shown in Figure 1, the coating section includes a PVC film supply roller 420 and a protective film supply roller 430 that supply film to the cooling coating roller 410; the PVC film supply roller 420 and the protective film supply roller 420 are The film roller 430 simultaneously provides the PVC film 421 and the protective film 431 to a cooling film roller 410, allowing the cooling film roller 410 to cover the door steel plate 10 with the PVC film 421 and the protective film 431 at one time. Of course, it can also be set It is only covered with PVC film 421.

Preferably, as shown in Figure 1, the water spraying section includes a water jet 600, and the water blowing section includes a water blowing device 700. The coated door steel plate 10 is sequentially sprayed with water through the water jet 600 and the water blowing device 700 in the prior art. and water blowing treatment.

Preferably, as shown in Figure 1, an infrared thermometer 500 is provided between the water spray section and the film coating section. The infrared thermometer 500 can be used to observe the surface temperature of the coated door steel plate 10 in real time.

Specifically, as shown in Figure 1, the distance between the above-mentioned rubber coating roller 210 and the cooling coating roller 410 is less than the length of the door steel plate 10 to be processed, and the end of the door steel plate 10 enters under the cooling coating roller 410. When the door steel plate 10 is still located under the rubber coating roller 210, there is no need to set up other driving methods between the cooling coating roller 410 and the rubber coating roller 210 to drive the door steel plate 10 to move; and the door steel plate 10 is separated from the rubber coating roller. The movement of the wheel 210 or the cooling coating roller 410 can be driven by other driving equipment or manually.

Specifically, water is supplied to the inside of the cooling coating roller 410 through circulating water equipment to ensure the temperature of the cooling water inside the cooling coating roller 410 .

Referring to Figure 1, this embodiment also provides a door steel plate water coating method, which includes the following steps:

Step 1: Place the door steel plate 10 on the placement mechanism, then introduce the end of the door steel plate 10 under the rubber coating roller 210, apply glue to the top side of the door steel plate 10 through the rubber coating roller 210, and drive the rubber coating roller 210 to the right. The heating section moves;

Step 2: The heating section heats the glued door steel plate 10 and drives the door steel plate 10 to continue to move to the right until the end of the door steel plate 10 enters under the cooling coating roller 410, and the door steel plate is aligned with the door steel plate through the cooling coating roller 410. 10 The top side is coated and cooled, the water temperature in the cooling coating roller 410 is controlled within 40°C to 60°C, and the pressure of the cooling coating roller 410 on the door steel plate 10 is controlled to be ≤4KPa, and the coating speed is ≤40HZ;

Step 3: Drive the coated door steel plate 10 into the water spray section, and spray cooling water on the door steel plate 10 through the water spray section;

Step 4: Drive the door steel plate 10 that has passed through the water spray section into the water blowing section, and blow off the cooling water on the door steel plate 10 through the water blowing section;

Step 5: Remove the door steel plate 10 that has passed through the water blowing section from the placement mechanism to complete processing.

In this embodiment, the door steel plate 10 placed on the placement mechanism is processed sequentially through the glue coating section, heating section, film coating section, water spray section and water blowing section from left to right; in the film coating section, the cooling film is While the roller 410 attaches the PVC film 421 to the door steel plate 10, it cools the heated door steel plate 10 for the first time, and then cools it for the second time through the water spray section to avoid continuous hot pressing that may cause the color of the PVC film to change. changes, causing the 3D surface texture to be lost; the water temperature in the cooling coating roller 410 is controlled within 40°C ~ 60°C to ensure the cooling effect, and at the same time, the pressure of the cooling coating roller 410 on the door steel plate 10 is controlled to be ≤4KPa. Specifically, more The coating speed of thin door leaf steel plates is ≤40HZ, and the coating speed of thicker door frame steel plates is 8-10HZ to ensure the coating effect.

Preferably, the heating section adopts different temperatures according to different thicknesses of the door steel plate 10. The thinner the door steel plate 10, the lower the heating temperature of the heating section, so as to prevent the thinner door steel plate 10 from being unable to cool down in time due to excessive temperature and the thicker door steel plate. 10 Because the temperature is too low, the coating effect will be affected.

Specifically, the above-mentioned rubber coating roller 210, cooling coating roller 410, PVC film supply roller 420 and protective film supply roller 430 can directly adopt various mature roller equipment in the existing technology.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified. Modifications or equivalent substitutions without departing from the spirit and scope of the technical solution of the present invention shall be included in the scope of the claims of the present invention.

Claims (10)

1. The door steel plate water-coated coating system is characterized in that it includes a placement mechanism, and a glue coating section, a heating section, a coating section, a water spray section and a water blowing section are arranged above the placement mechanism from left to right. The placing mechanism is used to place the door steel plate to be coated; The glue coating section includes a glue coating roller, which is in contact with the top side of the door steel plate to be coated, glues the door steel plate and drives it to move to the right; The heating section is used to heat the glued door steel plate; The coating section includes a cooling coating roller. The cooling coating roller contacts the top side of the heated door steel plate to coat the door steel plate and drive it to move to the right. The cooling coating roller is filled with Cooling water; The water spray section is used to spray cooling water on the coated door steel plate; The water blowing section is used to blow away the cooling water on the door steel plate. 2. The door steel plate water coating system according to claim 1, characterized in that the placement mechanism is a roller frame, and a number of movably connected movable rollers are provided on the top side of the roller frame. 3. The door steel plate water coating system according to claim 1, characterized in that the glue coating section includes two glue coating rollers. 4. The door steel plate water-coated film coating system according to claim 3, characterized in that the glue coating section further includes a glue dispensing device, and the glue dispensing device is arranged between the two glue coating rollers. above. 5. The door steel plate water coating system according to claim 1, wherein the heating section includes an electric heating box. 6. The door steel plate water-coated coating system according to claim 1, wherein the coating section includes a PVC film supply roller that supplies film to the cooling coating roller and a protective film supply roller. Roller wheel. 7. The door steel plate water coating system according to claim 1, wherein the water spray section includes a water jet, and the water blowing section includes a water blowing device. 8. The door steel plate water coating system according to claim 1, characterized in that an infrared thermometer is provided between the water spray section and the coating section. 9. The water-coated coating method for door steel plates is characterized by including the following steps: Step 1: Place the door steel plate on the placement mechanism, then introduce the end of the door steel plate under the rubber coating roller, apply glue to the top side of the door steel plate through the rubber coating roller, and drive the rubber coating roller to move to the right heating section; Step 2: The heating section heats the glued door steel plate and drives the door steel plate to continue moving to the right until the end of the door steel plate enters under the cooling coating roller, and the top side of the door steel plate is coated through the cooling coating roller. And carry out cooling, the water temperature in the cooling coating roller is controlled within 40℃~60℃, and the pressure of the cooling coating roller on the door steel plate is controlled to ≤4KPa, and the coating speed is ≤40HZ; Step 3: Drive the coated door steel plate into the water spray section, and spray cooling water on the door steel plate through the water spray section; Step 4: Drive the door steel plate that has passed through the water spray section into the water blowing section, and blow off the cooling water on the door steel plate through the water blowing section; Step 5: Remove the door steel plate that has passed through the water blowing section from the placement mechanism to complete processing. 10. The method of water-coating the door steel plate according to claim 9, characterized in that the heating section adopts different temperatures according to different thicknesses of the door steel plate. The thinner the door steel plate, the lower the heating temperature of the heating section.