CN115722399A - Inverted coating device and inverted coating method - Google Patents

Abstract

The invention relates to an inverted coating device which comprises a coating workbench and an adsorption assembly which are positioned at the top, a coating assembly positioned below the coating workbench, and a driving assembly for driving the coating assembly to move left and right to coat the lower surface of a substrate. The invention also discloses an inverted coating method using the device. The invention realizes high-speed stable coating and reduces the defects of dust and impurities of coating.

Description

Inverted coating device and inverted coating method

technical field

The invention belongs to the technical field of coating, and in particular relates to an inverted coating device and an inverted coating method.

Background technique

Coating devices are widely used in ink printing, lithium battery, hardened film, optical film and paper making industries. The die head of a conventional coating machine is installed vertically downward, and the low-viscosity solution is easy to leak from the slit opening, causing air to enter the die cavity and destroy the coating stability. In addition, due to the installation method, the coating speed cannot be too fast. Once the coating speed is too fast, the solution distribution becomes unstable and causes coating film defects. Conventional coating devices cannot tightly combine the loading and unloading devices with the coating machine, resulting in time loss in the loading and unloading process. During the coating process, the surface of the substrate to be coated is placed upwards, and dust is more likely to fall to the top surface of the substrate during the coating process.

Contents of the invention

The technical problem to be solved by the present invention is to provide an inverted coating device and an inverted coating method, which can better realize double-sided coating, achieve high-speed stable coating and reduce coating dust and impurities.

The present invention is achieved by providing an inverted coating device, including a coating workbench at the top, an adsorption assembly arranged on the coating workbench for clamping the substrate to be coated, and an underside of the coating workbench. The coating assembly and the driving assembly that drives the coating assembly to move left and right to apply coating to the lower surface of the substrate, the substrate to be coated is arranged on the bottom surface of the coating workbench, and the coating assembly includes a coating die provided with a coating lip head, die head fixing plate, die head rotating motor and carrying platform, the drive assembly drives the carrying platform to move left and right along the set motion track, the coating die head is fixed on the die head fixing plate, and the die head is fixed The plate is erected on the carrying platform through the rotating shaft of the die head, and the rotating motor of the die head is arranged on the carrying table, and the rotating motor of the die head drives the fixed plate of the die head and the coating die head to rotate around the rotating shaft of the die head simultaneously, so that the coating die head The coated lip of the head faces upward.

Further, the painting workbench and the coating assembly are arranged in the coating safety cover, and movable windows, movable doors and adjustable feet are respectively arranged on the coating safety cover, and the painting workbench is arranged in Coating the top of the safety cover, the adjusting feet are used to calibrate the height, position and levelness of the painting workbench.

Further, a post-processing cover is provided on the side of the coating safety cover, and a post-processing component for drying and/or annealing the coating film on the surface of the substrate just coated is arranged in the post-processing cover, so The coating safety cover and the post-processing cover are connected through movable windows, the coating safety cover and the post-processing cover are respectively arranged on the base, and the moving track is also arranged on the base, and the base is also provided for The substrate conveyor belt for conveying the substrate, the substrate conveyor belt is located below the coating die head, the substrate positioning side plate for positioning the substrate is set on the substrate conveyor belt, and the coating safety cover and the post-processing cover are respectively provided to facilitate A movable window through which the substrate conveyor passes and substrates enter and exit.

Further, an exhaust gas discharge device for collecting and discharging the gas in the after-treatment hood is also arranged on the after-treatment hood.

Further, the painting workbench includes a mounting plate, a sample stage and a level detection component, the sample stage is fixed on the lower bottom surface of the mounting plate, and the level detection component is arranged on the side of the sample stage.

Further, the adsorption assembly includes a telescopic rod, an adsorption plate and a compression spring, the telescopic rods are respectively arranged at the four corners of the mounting plate, the adsorption plate is arranged on the side of the sample stage, and the compression spring is sleeved on the On the telescopic rod and between the adsorption plate and the installation plate; the inner cavity of the adsorption plate, the vacuum tube interface and a plurality of adsorption ports are respectively arranged on the adsorption plate, and the vacuum tube interface is connected with the inner cavity of the adsorption plate, and each adsorption port They communicate with the inner cavity of the adsorption plate respectively and are arranged on the lower bottom surface of the adsorption plate.

Further, the carrying platform includes a main backplane, a lifting plate, a slider, a wedge-shaped slider and a slider motor, the main backplane is arranged on the left and right sides of the carrying platform, and the lifting plate and the slider are respectively arranged on Between the two main backplanes, the lifting plate is arranged between the sliders and moves up and down along the sliders. The sliders move back and forth along the movement track. The block motor is arranged on the wedge-shaped slider to drive the wedge-shaped slider to move back and forth, thereby driving the lifting plate and the coating die and the die-head fixing plate arranged on it to be lifted or lowered simultaneously.

Further, the carrying platform further includes a limit block, and the limit block is telescopically moved by a limit block driving assembly arranged on the main backplane.

Further, an infrared sensor for sensing the position of the substrate is arranged on the moving track.

The present invention is achieved by providing an inverted coating method, using the aforementioned inverted coating device for coating, and the coating method includes the following steps:

Step 1. The adsorption component absorbs the substrate to be coated under the coating table. The die head rotation motor drives the die head fixing plate and the coating die head to rotate around the die head shaft at the same time, so that the coating die head rotates to its coating lip. With the mouth facing upwards, the drive assembly drives the carrier platform and the coating die on it to move left and right along the moving track, and the coating die coats the lower surface of the substrate;

Step 2: After the lower surface of the substrate is coated, the carrying platform returns to the initial position, and the adsorption component releases the adsorption of the substrate.

Compared with the prior art, the inverted coating device and the inverted coating method of the present invention have the following characteristics:

1. Reduce scratches on the surface of the substrate, suitable for double-sided coating.

2. The coating die is installed vertically upwards, which eliminates the influence of gravity on coating stability and improves the stability of coating solution distribution. Compared with the way that the coating die is installed vertically downward, the coating speed of the coating die installed vertically upward can be set faster while ensuring the stability of the coating.

3. The conveyor belt for conveying the substrate and the coating machine can be integrated without interference, which improves the efficiency of feeding and unloading the substrate.

4. The coated surface of the substrate is facing downwards to reduce the dust in the air falling on the surface of the substrate.

Description of drawings

Fig. 1 is the three-dimensional schematic diagram of a preferred embodiment of the inverted coating device of the present invention;

Fig. 2 is a three-dimensional schematic diagram of another state of the inverted coating device in Fig. 1;

Fig. 3 is the front view of the adsorption assembly in Fig. 1;

Fig. 4 is a cross-sectional view of the combined state of the coating assembly and the carrying platform.

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Please refer to Fig. 1 and Fig. 2 at the same time, the preferred embodiment of the inverted coating device of the present invention includes a coating workbench 1 at the top and is arranged on the painting workbench 1 for clamping the substrate A to be coated The adsorption assembly 2, the coating assembly 3 located under the coating workbench 1, and the driving assembly (not shown) that drives the coating assembly 3 to move left and right to apply coating to the lower surface of the substrate A. The substrate A to be coated is arranged on the bottom surface of the coating workbench 1 .

The coating assembly 3 includes a coating die 31 with a coating lip, a die fixing plate 32 , a die rotating motor 33 and a carrying platform 34 . The driving assembly drives the carrying platform 34 to move left and right along the set moving track 4 . The coating die head 31 is fixed on the die head fixing plate 32, the die head fixing plate 32 is erected on the carrying platform 34 through the die head rotating shaft (not shown in the figure), and the die head rotating motor 33 is set On the carrying platform 34, the die head rotation motor 33 drives the die head fixing plate 32 and the coating die head 31 to rotate around the die head rotating shaft (not shown in the figure) at the same time, so that the coating lip of the coating die head 31 up. When the coating die head 31 rotates to its coating lip facing upward, the coating die head 31 coats the lower surface of the substrate A.

The painting workbench 1 and the coating assembly 3 are arranged in a coating safety cover 5 , and a movable window 51 , a movable door 52 and an adjusting foot 53 are respectively arranged on the coating safety cover 5 . The painting workbench 1 is arranged on the top of the coating safety cover 5 , and the adjusting feet 53 are used to calibrate the height, position and levelness of the painting workbench 1 .

A post-processing cover 6 is set on the side of the coating safety cover 5, and an after-treatment for drying and/or annealing the coating film on the surface of the substrate A just coated is arranged in the post-processing cover 6 Component7. The post-processing method can be hot air blowing, infrared drying or air suction. The coating safety cover 5 communicates with the post-processing cover 6 through a movable window 51 . The purpose of setting the movable window 51 is to reduce the interference of the post-processing component 7 to the coating operation. The coating safety cover 5 and the post-processing cover 6 are respectively arranged on the base 8 , and the moving track 4 is also arranged on the base 8 .

A substrate conveyor belt 9 for transporting the substrate A is also arranged on the base 8 . The substrate conveyor belt 9 is located below the coating die 31 . A substrate positioning side plate 91 for positioning the substrate A is provided on the substrate conveyor belt 9 . Movable windows 51 are provided on the coating safety cover 5 and the post-processing cover 6 to facilitate the passage of the substrate conveyor belt 9 and the entry and exit of the substrate A, respectively. The dodge door 52 is provided for operations such as assembly, commissioning and maintenance of the equipment.

Setting the coating safety cover 5 and the post-processing cover 6 respectively not only isolates the active coating area and the post-processing area from each other but also isolates them from the external environment, reducing mutual adverse effects and improving work stability.

An exhaust gas discharge device 10 for collecting and discharging gas in the after-treatment hood is also arranged on the after-treatment hood 6 .

The painting workbench 1 includes a mounting plate 11 , a sample stage 12 and a level detection component 13 . The sample stage 12 is fixed on the bottom surface of the mounting plate 11 , and the level detection component 13 is arranged on the side of the sample stage 12 .

Please refer to FIG. 1 and FIG. 3 at the same time, the suction assembly 2 includes a telescopic rod 21 , a suction plate 22 and a compression spring 23 . The telescopic rods 21 are respectively arranged on the four corners of the mounting plate 11, the adsorption plate 22 is arranged on the side of the sample stage 12, and the compression spring 23 is sleeved on the telescopic rod 21 and is located between the adsorption plate 21 and the mounting plate. Between 11.

An adsorption plate inner cavity 24, a vacuum tube interface 25 and a plurality of adsorption ports 26 are respectively arranged on the adsorption plate 22, and the vacuum tube interface 25 communicates with the adsorption plate inner cavity 24, and each adsorption port 26 is connected with the adsorption plate inner cavity respectively. 24 is connected and arranged on the lower bottom surface of the adsorption plate 22, and is used to absorb the substrate A when the inner cavity 24 of the adsorption plate is in a vacuum state. The vacuum tube interface 25 communicates with the vacuum equipment so that the inner cavity 24 of the adsorption plate is in a vacuum state, and the plurality of adsorption ports 26 have adsorption capacity. The telescopic rod 21 drives the adsorption plate 22 to move downwards, absorbs the substrate A to be coated from the substrate conveyor belt 9 and then lifts it to the bottom surface of the sample stage 12 . The telescopic rod 21 also drives the adsorption plate 22 to move the coated substrate A downward from the bottom surface of the sample table 12 and send it back to the substrate conveyor belt 9. At this time, the vacuum in the cavity 24 of the adsorption plate is lost, and the adsorption port 26 is not closed. Adsorption capacity. The function of setting the compression spring 23 is to separate and release the substrate A adsorbed by the adsorption plate 22 after the vacuum is lost.

Please refer to FIG. 1 and FIG. 4 at the same time, the carrying platform 34 includes a main backboard 35 , a lifting plate 36 , a slider 37 , a wedge slider 38 and a slider motor 39 . The main backboards 35 are arranged on the left and right sides of the carrying platform 34 , and the lifting plate 36 and the slider 37 are respectively arranged between the two main backboards 35 . The lifting plate 36 is arranged between the sliders 37 and moves up and down along the sliders 37 . The slider 37 moves back and forth along the moving track 4 . The wedge-shaped slider 38 is arranged on the bottom of the lifting plate 36, and the slider motor 39 is arranged on the wedge-shaped slider 38 for driving the wedge-shaped slider 38 to move forward and backward. Through the forward and backward movement of the wedge-shaped slider 38, the lifting plate 36 and the coating die 31 and the die fixing plate 32 arranged thereon are simultaneously lifted or lowered to adjust the distance between the coating die 31 and the substrate A. seam height.

The carrying platform 34 also includes a limiting block 310 . The limiting block 310 is telescopically moved by a limiting block driving assembly (not shown in the figure) provided on the main backplane 35 . When the coating die head 31 rotates until its coating lip faces up and is ready to be coated, the limit block driving assembly drives the limit block 310 to stretch out and block it under the die head fixing plate 32 to prevent it from rotating And it is used to support the die fixing plate 32 and the coating die 31 . When the coating die head 31 needs to be disassembled and maintained, the limit block driving assembly drives the limit block 310 to retract and reset to facilitate the rotation of the die head fixing plate 32 and the coating die head 31 .

An infrared sensor (not shown in the figure) for sensing the position of the substrate A is arranged on the moving track 4 . The infrared sensor is used to detect whether the substrate A is placed on the substrate conveyor belt 9 and the position where the substrate A is placed on the substrate conveyor belt 9 . A position sensor (not shown in the figure) is installed on the side of the substrate conveyor belt 9 for calibrating the running position of the substrate conveyor belt 9 .

The present invention also discloses an inverted coating method, using the aforementioned inverted coating device for coating, the coating method includes the following steps, wherein the direction indicated by the arrow in Figure 1 is the direction of action of the device:

Step 1. Loading: the substrate conveyor belt 9 carries the substrate A to the directly below the sample stage 12, and the telescopic rod 21 drives the adsorption plate 22 to touch the surface of the substrate A. The adsorption plate 22 vacuumizes and adsorbs the substrate A, and the telescopic rod 21 retracts so that the substrate A touches the sample stage 12 . The sample stage 12 is vacuumed to fix the base A, and the adsorption plate 22 on the telescopic rod 21 breaks the vacuum to retract the adsorption plate 22 . Fixing of the substrate A to the sample stage 12 is completed.

Step 2, coating: the die head rotation motor 33 drives the die head fixing plate 32 and the coating die head 31 to rotate around the die head rotating shaft at the same time, so that the coating die head 31 rotates until its coating lip faces upward, and the drive assembly drives the carrier The table 34 and the coating die 31 on it move left and right along the moving track 4 at the same time, and the coating die 31 coats the lower surface of the substrate A. After the coating of the lower surface of the substrate A is completed, the carrier table 34 returns to the initial position.

Step 3, unloading: the telescopic rod 21 drives the adsorption plate 22 to contact the substrate A to vacuum and adsorb the substrate A, and the sample stage 12 breaks the vacuum. After the vacuum of the sample stage 12 is broken, the telescopic rod 21 continues to extend until the substrate A touches the substrate conveyor belt 9 . Then the suction plate 22 breaks the vacuum, and the telescopic rod 21 retracts to the initial position. The unloading of the substrate A from the sample stage 12 is completed.

Step 4, post-processing: the substrate conveyor belt 9 drives the substrate A to move above the post-processing component 7 for post-processing. And the next piece of substrate A on the substrate conveyor belt 9 also starts to perform the operation of step one.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

Claims (10)

1. The inverted coating device is characterized by comprising a coating workbench positioned at the top, an adsorption assembly arranged on the coating workbench and used for clamping a substrate to be coated, a coating assembly positioned below the coating workbench, and a driving assembly driving the coating assembly to move left and right to coat the lower surface of the substrate, wherein the substrate to be coated is arranged on the bottom surface of the coating workbench, the coating assembly comprises a coating die head provided with a coating lip, a die head fixing plate, a die head rotating motor and a conveying platform, the driving assembly drives the conveying platform to move left and right along a set moving track, the coating die head is fixed on the die head fixing plate, the die head fixing plate is erected on the conveying platform through a die head rotating shaft, the die head rotating motor is arranged on the conveying platform, and the die head rotating motor drives the die head fixing plate and the coating die head to rotate around the die head rotating shaft simultaneously, so that the coating lip of the coating die head faces upwards.

2. The inverted coating apparatus according to claim 1, wherein the coating table and the coating module are disposed in a coating safety cover on which a movable window, a movable door, and an adjustment foot for calibrating a height position and levelness of the coating table are disposed, respectively.

3. The inverted coating device according to claim 2, wherein a post-treatment hood is provided on a side surface of the coating safety hood, a post-treatment assembly for drying and/or annealing a coating film on a surface of a substrate which has just been coated is provided in the post-treatment hood, the coating safety hood and the post-treatment hood are communicated through a movable window, the coating safety hood and the post-treatment hood are respectively provided on a base, the moving rail is also provided on the base, a substrate conveyor belt for conveying the substrate is further provided on the base, the substrate conveyor belt is located below the coating die head, a substrate positioning side plate for positioning the substrate is provided on the substrate conveyor belt, and the movable window for allowing the substrate conveyor belt to pass through and the substrate to enter and exit is provided on the coating safety hood and the post-treatment hood, respectively.

4. The inverted coating apparatus of claim 3, wherein an exhaust gas discharge means for collecting and discharging gas inside the aftertreatment hood is further provided on the aftertreatment hood.

5. The inverted coating apparatus according to claim 3, wherein the coating station comprises a mounting plate, a sample station fixed on a lower bottom surface of the mounting plate, and a level detecting assembly provided on a side surface of the sample station.

6. The inverted coating device according to claim 5, wherein the adsorption component comprises telescopic rods, adsorption plates and compression springs, the telescopic rods are respectively arranged at four corners of the mounting plate, the adsorption plates are arranged at the side parts of the sample table, and the compression springs are sleeved on the telescopic rods and are positioned between the adsorption plates and the mounting plate; the vacuum tube interface is communicated with the inner cavity of the adsorption plate, and each adsorption interface is communicated with the inner cavity of the adsorption plate and arranged on the lower bottom surface of the adsorption plate.

7. The inverted coating device according to claim 1, wherein the carrying platform comprises main back plates, lifting plates, sliders, wedge-shaped sliders and slider motors, the main back plates are arranged on the left side and the right side of the carrying platform, the lifting plates and the sliders are respectively arranged between the two main back plates, the lifting plates are arranged between the sliders and move up and down along the sliders, the sliders move back and forth along the moving tracks, the wedge-shaped sliders are arranged on the lower portions of the lifting plates, and the slider motors are arranged on the wedge-shaped sliders and used for driving the wedge-shaped sliders to move back and forth, so that the lifting plates, the coating dies and the die head fixing plates arranged on the lifting plates are driven to be lifted or lowered simultaneously.

8. The inverted coating apparatus of claim 7, wherein the carrier stage further comprises a stopper that is telescopically moved by a stopper driving assembly provided on the main back plate.

9. The inverted coating apparatus as set forth in claim 1, wherein an infrared sensor for sensing the position of the substrate is provided on the moving track.

10. An inverted coating method characterized by coating using the inverted coating apparatus according to any one of claims 1 to 9, the coating method comprising the steps of:

the method comprises the following steps that firstly, an adsorption component adsorbs a substrate to be coated, the substrate is positioned below a coating workbench, a die head rotating motor drives a die head fixing plate and a coating die head to rotate around a die head rotating shaft at the same time, so that the coating die head rotates to the state that a coating lip of the coating die head faces upwards, a driving component drives a conveying platform and the coating die head on the conveying platform to move left and right along a moving track at the same time, and the coating die head coats the lower surface of the substrate;

and step two, after the lower surface of the substrate is coated, returning the carrying platform to the initial position, and removing the adsorption of the adsorption assembly on the substrate.

Images