CN115837743A - Full-automatic gypsum board laminating method and system - Google Patents

Abstract

The invention discloses a method and system for fully automatic film covering of gypsum boards. The gypsum boards are continuously sent to the conveying unit of the film laminating mechanism according to fixed intervals; two automatic joints of film-covered fabric rolls are used for continuous unwinding work, Real-time monitoring of the position of the gypsum board in the conveying unit and the position of the film-coated fabric in the tensioning reel group, automatically correcting the position of the film-coated fabric so that the film-coated fabric is evenly attached to the surface of the gypsum board; adjusting the pressure of the pressing roller according to the thickness of the gypsum board Press down strength, so that the film-coated fabric is attached to the surface of the gypsum board with a fixed pressure; the film-covered fabric that exceeds the gypsum board is folded on both sides of the conveying unit to complete the cladding work on the side of the gypsum board. The present invention combines all The end-to-end connection of the film-coated fabric rolls realizes continuous unwinding and lamination work, so that the fabric is pasted on the surface of the gypsum board in one piece, with good film covering effect and high efficiency, so it can completely cover the side of the gypsum board , Improve production quality.

Description

A kind of automatic coating method and system for gypsum board

technical field

The invention relates to the technical field of film covering of gypsum boards, in particular to an automatic film covering method and system for gypsum boards, which realize film covering work on the surface and four sides of the gypsum boards.

Background technique

The gypsum board lamination work specifically refers to adding a layer of decorative surface material for decoration on the outer surface of the gypsum board body or face paper. After the gypsum board is cut and dried and other production processes, the formed gypsum board is transferred to the coating Membrane system, which covers one surface (usually the back) and four sides of the gypsum board.

Most of the existing gypsum board coating methods are: cutting the film-coated surface material to a fixed size, after glue coating, aligning the film-coated surface material with the gypsum board, and adjusting the four corners of the film-coated surface material. Cut to form four right-angled areas, then roll the edges of the laminated facestock over the sides of the plasterboard.

The implementation difficulties caused by the above steps are:

Since the film-coated surface material has the same rectangular structure as the gypsum board, it is difficult to align with the gypsum board, resulting in asymmetric wrapping of the side of the gypsum board, and it is impossible to achieve full wrapping, and the alignment adjustment is difficult. When cutting at the corner position, the number of cutting times of the laminated fabric is increased, causing the laminated fabric itself to adhere to form wrinkles under the action of glue.

Contents of the invention

For this reason, the present invention provides a fully automatic coating method and system for gypsum boards to solve the difficulty in aligning the coating surface material with the gypsum boards in the prior art, resulting in asymmetrical side coating of the gypsum boards and the inability to achieve full wrapping. When cutting the four corners of the film-coated surface material, the number of cutting times of the film-coated fabric is increased, which leads to the technical problem that the film-coated fabric itself adheres to form wrinkles under the action of glue.

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

A fully automatic film covering method for gypsum boards, comprising the following steps:

Step 100, continuously sending the gypsum boards into the conveying unit of the lamination lamination mechanism according to fixed intervals;

Step 200, use the automatic splice of two film-coated fabric rolls to carry out continuous unwinding work, monitor the position of the plasterboard in the conveying unit and the position of the film-coated fabric in the tensioning reel group in real time, and automatically correct the position of the film-coated fabric to make the film The fabric is evenly attached to the surface of the plasterboard;

Step 300, adjusting the pressing strength of the pressing roller according to the thickness of the gypsum board, so that the film-coated fabric is attached to the surface of the gypsum board with a fixed pressure;

Step 400: Fold the film-coated fabric that exceeds the gypsum board on both sides of the conveying unit to complete the cladding work on the side of the gypsum board.

As a preference of the present invention, in step 100, the distance between two adjacent gypsum boards is twice the thickness of the gypsum boards, and the film-coated fabric covers the surface of all gypsum boards with equal distances;

Wherein, the length of the film-coated fabric between two adjacent gypsum boards is twice the thickness of the gypsum board, and the length of the film-coated fabric beyond the side of the gypsum board is twice the thickness of the gypsum board .

As a preference of the present invention, in step 200, two unwinding shafts that can automatically switch positions are used to unwind the film-coated fabric roll, wherein the two unwinding shafts rotate around the central position of their line to Automatically switch the location of the laminated fabric roll being unwound;

Between the two unwinding shafts, there are rubber rollers and squeeze rollers that can move towards the unwinding shaft and away from the unwinding shaft. At the same time, glue is coated on the inner surface of the released film-coated fabric, and the squeeze roller is used to press down the glue-coated film-coated fabric and adhere to the end of the new film-coated fabric roll to realize the film-coated surface. Fabric joints.

As a preference of the present invention, in step 200, the two unwinding shafts are rotated around the central position of their line, and the direction of rotation is such that the released coated fabric will not be squeezed by the rubber roller and the squeezing roller. Resist, after the position of the unwinding shaft of the coated fabric roll that is being unwound is switched, it is always above the unwinding shaft that has been unwound.

As a preference of the present invention, the length of the mounting shaft of the rubber roller is twice the width of the roll of the coated fabric, and the rubber roller is on the unwinding shaft when the roll of the coated fabric is unrolled. side, and the rubber roller moves toward the unwinding shaft when the thickness of the film-coated fabric roll is lower than the set threshold, and glues the inner surface of the released film-coated fabric;

Described extruding roller compresses the described film-coated fabric after gluing and sticks together with new film-coated fabric roll, until the original film-coated fabric roll is released.

As a preference of the present invention, in step 200, the implementation steps of using two rolls of film-coated fabric rolls for automatic jointing to carry out continuous unwinding work are:

Install a new film-coated fabric roll on the unwinding shaft that has been released, monitor the thickness of the film-coated fabric roll being unwound in real time, and compare the thickness of the film roll with the set threshold;

When the thickness of the reel is less than the set threshold, the rubber roller is moved inwards between the two unwinding reels, and the coated fabric being unwound is pressed close to the rubber roller to coat the glue with the squeeze roller, and the squeeze roller will be coated The end of the laminated fabric coated with glue is glued to the beginning of the new laminated fabric roll;

When the thickness of the reel is zero, the squeeze roller resets, and the rubber roller moves outward to the end of the unwinding reel;

Drive the laminated fabric roll to rotate counterclockwise, so that the new laminated fabric roll moves to the top of the unwinding shaft that has been released.

As a preference of the present invention, in step 400, the conveying unit is divided into two sections, the first conveying unit is used to fold the coated fabric on both sides of the gypsum board, and the second conveying unit is used to Fold the film-covered fabrics of the two sections of the gypsum board.

As a preferred embodiment of the present invention, in step 400, the method of folding the film-coated fabric on both sides of the gypsum board is as follows:

During the conveying process of the first conveying unit, a cutting mechanism is used to form an incision on the film-coated fabric between two adjacent gypsum boards, wherein the length of the incision is the same as the distance between two adjacent gypsum boards, and the length of the incision is Width is the excess length of one side of the film-coated fabric;

The film-covered fabrics beyond the two sides of the gypsum board are adhered to the two sides of the gypsum board after being folded by covering rollers with different inclination angles.

As a preference of the present invention, in step 400, the method for realizing the folding of the film-coated fabric at both ends of the gypsum board is:

During the conveying process of the first section of the conveying unit, the film-coated fabric between two adjacent gypsum boards is cut by a cutting mechanism, wherein the cutting position of the cutting mechanism is the film-covered fabric between two adjacent gypsum boards. the center position of the fabric;

The gypsum board is transported to the second section of conveying unit. Covering rollers with different inclination angles are set on both sides of the second section of conveying unit. The covering rollers will gradually fold the coated fabric beyond the two ends of the gypsum board and adhere to it. Both ends of the gypsum board.

In order to solve the above technical problems, the present invention further provides the following technical solutions: a fully automatic system for fully automatic film coating of gypsum boards, comprising:

The conveying unit is used to convey the head and tail of the gypsum board according to a fixed distance;

The film unwinding and tensioning unit is set above the conveying unit, and is used to automatically attach two rolls of film-coated fabric rolls end to end, so as to continuously transport the film-coated fabric to the surface of the plasterboard, and during the conveying process, the The surface of the coated fabric is coated with glue;

The deviation correction unit is arranged at the position of the film-coated unwinding and tensioning mechanism, and is used to correct the position of the film-coated fabric, so that the film-coated fabric evenly covers the surface of the gypsum board, and the film-coated fabric the same length beyond both sides of said plasterboard;

A cutting unit, arranged on both sides of the conveying unit, is used to cut out a rectangular slit from the film-coated fabric between two adjacent gypsum boards, and the length of the rectangular slit is between two adjacent gypsum boards. The spacing, the width of the rectangular slit is beyond the width of the film-coated fabric of the gypsum board;

A cutting unit, arranged above the conveying unit, is used to cut the film-coated fabric between two adjacent gypsum boards from the central position;

The cladding roller assembly is arranged on both sides of the conveying unit, and includes a plurality of rollers with different inclination angles, which are used to sequentially adhere the coated fabrics on the two opposite sides of the gypsum board to the sides of the gypsum board.

Compared with the prior art, the present invention has the following beneficial effects:

The invention realizes fully automatic lamination work, and realizes continuous unwinding and lamination work by continuously connecting all film-coated fabric rolls end to end, so that the fabric is pasted on the surface of the gypsum board as a whole, and the film coating effect is good. The efficiency is high, and through adaptive position adjustment, the fabric can be evenly covered on the surface of the gypsum board, so it can completely cover the side of the gypsum board and improve the production quality.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings that are required in the description of the embodiments or the prior art. Apparently, the drawings in the following description are only exemplary, and those skilled in the art can also obtain other implementation drawings according to the provided drawings without creative work.

Fig. 1 is a schematic flow chart of the fully automatic film coating method provided by the embodiment of the present invention;

Fig. 2 is the structural block diagram of the fully automatic lamination system provided by the embodiment of the present invention;

Fig. 3 is the working schematic diagram of the normal discharge of a single new discharge reel provided by the embodiment of the present invention;

Figure 4 is a schematic diagram of the joint bonding of two unwinding rolls provided by the embodiment of the present invention

The labels in the figure are respectively indicated as follows:

Conveying unit 1, film unwinding and tensioning unit 2, deviation correcting unit 3, cutting unit 4, cutting unit 5, covering roller assembly 6.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

As shown in Figure 1, the present invention provides a fully automatic film coating method for gypsum boards. The film coating work in this embodiment specifically refers to adding a layer of decoration for decoration on the outer surface of the gypsum board body or the protective paper. After the surface material and gypsum board go through the production process such as cutting and drying, the formed gypsum board is transferred to the film coating system, and one surface (generally the back) and four sides of the gypsum board are covered with film. Realize fully automatic lamination work without manual participation, high work efficiency, and high orderliness and uniformity of lamination, which makes the quality of the entire lamination operation high.

This gypsum board fully automatic film covering method specifically comprises the following steps:

Step 100 , continuously sending the gypsum boards into the conveying unit of the film lamination mechanism at a fixed interval.

In this step, the spacing between two adjacent gypsum boards is twice the thickness of the gypsum boards, and the film covering is covered with the film covering on all surfaces of the gypsum boards that are equally spaced, where the The spacing can be the set spacing during feeding, or the gypsum board is transferred to the conveying unit of the film laminating mechanism and readjusted to the set spacing.

Wherein, the length of the film-coated fabric between two adjacent gypsum boards is twice the thickness of the gypsum board, and the length of the film-coated fabric beyond the side of the gypsum board is twice the thickness of the gypsum board.

Step 200, use the automatic splice of two film-coated fabric rolls to carry out continuous unwinding work, monitor the position of the plasterboard in the conveying unit and the position of the film-coated fabric in the tensioning reel group in real time, and automatically correct the position of the film-coated fabric to make the film The fabric is evenly attached to the surface of the plasterboard.

The main purpose of the automatic deviation correction function is: when covering the film-coated fabric on the gypsum board, it is necessary to ensure that the covering range of the film-coated fabric on the four sides of the gypsum board is the same, that is, the film-coated fabric is evenly covered, and there will be no gypsum Insufficient cladding on one side of the board.

The specific implementation method is: detect the real-time position of the coated fabric through infrared, and feed back the signal to the control system to adjust the reel position of the automatic unwinder in real time to ensure that the surface material is evenly distributed in the left and right directions of the gypsum board.

In step 200, two unwinding shafts capable of automatically switching positions are used to unwind the film-coated fabric roll, and the ends and starting ends of the two film-coated fabric rolls are glued together to realize continuous unwinding work, wherein, The two unwinding shafts rotate around the central position of their line to automatically switch the position of the roll of laminated fabric that is being unwound.

In this embodiment, as shown in Figure 3 and Figure 4, in order to facilitate the adhesion of the ends and starting ends of the two film-coated fabric rolls, the two unwinding shafts rotate around the center of their line, and the direction of rotation can be So that the filmed fabric being released will not be resisted by the rubber roller and the squeeze roller, after the position of the unwinding shaft of the filmed fabric roll being unwound is switched, it will always be above the unwinding shaft that has been unrolled.

For example, if the conveying unit is located on the right side of the unwinding shaft, the two unwinding shafts rotate counterclockwise around the center of their line, and the coated fabric being released at this time will not be resisted by the rubber roller. On the left side of the reel, the two unwinding reels rotate clockwise around the center of their line, and the coated fabric being released at this time will not be resisted by the rubber roller.

And the way to glue the end and start of two laminated fabric rolls together is:

Between the two unwinding shafts, there are rubber rollers and squeeze rollers that can move toward the unwinding shaft and away from the unwinding shaft. The rubber rollers are used to release the coated fabric when the thickness of the coated fabric roll is lower than the set threshold. The inner surface is coated with glue, and the squeeze roller is used to press down the glue-coated film fabric and adhere to the end of the new film fabric roll to realize the joint of the film fabric.

In order to realize the movement of the rubber roller and the squeeze roller, the length of the installation shaft of the rubber roller is twice the width of the film-coated fabric roll, and the rubber roller is on the side of the unwinding shaft when the film-coated fabric roll is unrolled, and the rubber roller When the thickness of the film-coated fabric roll is lower than the set threshold, it moves toward the unwinding shaft, and glues the inner surface of the released film-coated fabric;

The extrusion roller presses the coated fabric and the new laminated fabric roll together, and sticks the end of the coated fabric being unrolled to the beginning of the new laminated fabric roll until the original laminated fabric roll The roll of fabric is released.

To sum up, in step 200, the implementation steps of using the automatic splicing of two rolls of film-coated fabric rolls for continuous unwinding work are as follows:

(1) Install a new film-coated fabric roll on the unwinding shaft that has been released, monitor the thickness of the film-coated fabric roll being unwound in real time, and compare the thickness of the film roll with the set threshold;

(2) When the thickness of the reel is less than the set threshold, move the rubber roller inward to between the two unwinding shafts, and use the squeeze roller to apply the glue to the coated fabric being unwound to the rubber roller, and squeeze The roller joins the end of the glued laminated fabric to the beginning of the new laminated fabric roll;

It should be added that when the thickness of the reel is greater than the set threshold, the rubber roller is always on the outer side of the film-coated fabric roll.

(3) When the thickness of the reel is zero, the squeeze roller resets, and the rubber roller moves outward to the end of the unwinding reel;

(4) Drive the film-coated fabric roll to rotate counterclockwise, so that the new film-coated fabric roll moves above the unwinding shaft that has been released.

It should be added that this embodiment utilizes the hoisting mechanism to lift the film-coated fabric roll to be produced from the material cart and put it into the automatic unwinding shaft. The automatic unwinding shaft is a double-roll automatic switching mode. When it is finished, the end of the film-coated fabric roll can be automatically fixed and glued together with the start end of another film-coated fabric roll, so as to switch to another film-coated fabric roll for continuous production.

Step 300 , adjust the pressing force of the pressing roller according to the thickness of the gypsum board, so that the film-coated fabric is attached to the surface of the gypsum board with a fixed pressure.

In this step, the thickness of the gypsum board is automatically detected, and fed back to the control system to automatically adjust the pressing rollers, so that the pressing rollers can use the appropriate pressure to complete the lamination of the film.

Step 400: Fold the film-coated fabric exceeding the gypsum board on both sides of the conveying unit to complete the covering work on the side of the gypsum board.

In step 400, the conveying unit is divided into two sections. The first section of the conveying unit is used to fold the film-coated fabric on both sides of the gypsum board. It is larger than the width of the gypsum board, and the excess size is specifically twice the thickness of the gypsum board. Therefore, the gypsum board can complete the covering work of the film-coated fabric in the first section of the conveying unit.

The second conveying unit is used to fold the film-coated fabrics of the two sections of the gypsum boards. Since the adjacent gypsum boards are integrally connected by the film-covered fabrics, in order to realize the side cladding of the other two opposite ends of the gypsum boards, it is necessary to The film facing between the gypsum boards is cut and wrapped, and in order to achieve the end wrapping, the gypsum boards need to be diverted to convey.

In step 400, the method of folding the film-covered fabrics on both sides of the gypsum board is as follows:

During the conveying process of the first conveying unit, a cutting mechanism is used to form an incision on the film-coated fabric between two adjacent gypsum boards, wherein the length of the incision is the same as the distance between two adjacent gypsum boards, and the length of the incision is The width is the length beyond which one side of the coated fabric exceeds;

The coated fabric beyond the two sides of the gypsum board is adhered to the two sides of the gypsum board after being folded by covering rollers with different inclination angles.

The method of folding the film-covered fabric at both ends of the gypsum board is as follows:

During the conveying process of the first section of the conveying unit, the film-coated fabric between two adjacent gypsum boards is cut by a cutting mechanism, wherein the cutting position of the cutting mechanism is the distance between the film-coated fabrics between two adjacent gypsum boards. Central location;

The gypsum board is transported to the second section of the conveying unit. Covering rollers with different inclination angles are set on both sides of the second section of the conveying unit. The covering rollers will gradually fold the coated fabric beyond the two ends of the gypsum board and adhere to the gypsum board. both ends.

In this embodiment, in order to realize the covering of the side of the gypsum board by the film-coated fabric, without creases or redundant fabrics at the corners of the gypsum board, it is specially placed between two adjacent gypsum boards. The film-coated fabric is cut. What needs to be specially explained is that in this embodiment, the covering cut of the film-coated fabric between two adjacent gypsum boards is cut and the film-coated fabric between two adjacent gypsum boards is cut. Before work, on the one hand, the laminated fabric between two adjacent gypsum boards is in a tight state, which can prevent the laminated fabric from sticking to the conveying unit or the side of the plasterboard during the cutting process; on the other hand, relatively speaking, reduce The number of cuts of the coated fabric is reduced, and the coated fabric itself is prevented from sticking to form wrinkles under the action of glue.

In addition, this embodiment also provides a fully automatic system for a fully automatic film coating method for gypsum boards, as shown in Figure 2, including:

The conveying unit 1 is used to convey the head and tail of the gypsum board according to a fixed distance;

The lamination unwinding and tensioning unit 2 is set above the conveying unit 1, which is used to automatically attach two rolls of lamination fabrics head to tail, so as to continuously convey the lamination fabrics to the surface of the plasterboard, and during the conveying process, the lamination fabrics The surface is coated with glue;

The deviation correction unit 3 is set at the position of the film unwinding and tensioning mechanism, and is used to correct the position of the film-covered fabric so that the film-covered fabric evenly covers the surface of the gypsum board, and the film-covered fabric exceeds the length of the two sides of the gypsum board same;

The cutting unit 4 is arranged on both sides of the conveying unit 1, and is used to cut out a rectangular slit on the film-coated fabric between two adjacent gypsum boards. The length of the rectangular slit is the distance between two adjacent gypsum boards. The width of the rectangular cut is the width of the laminated fabric beyond the plasterboard;

The cutting unit 5 is arranged above the conveying unit 1, and is used to cut the film-coated fabric between two adjacent gypsum boards from the central position;

The coating roller assembly 6 is arranged on both sides of the conveying unit 1, and includes a plurality of rollers with different inclination angles, which are used to adhere the coated fabrics on the two opposite sides of the gypsum board to the sides of the gypsum board in sequence.

It also includes a control system, wherein the conveying unit 1, the film unwinding and tensioning unit 2, the deviation correction unit 3, the cutting unit 4, the cutting unit 5 and the covering roller assembly 6 are connected in the same control system, and the control system is based on Adjust the conveying speed of the conveying unit 1 in real time according to the situation of surface material coating, so that the surface material coating can reach the best state.

And the control system aligns the film-covered fabric with the gypsum board through the deviation correction unit 3 according to the corresponding results of the film-coated fabric and the gypsum board, and the length of the film-coated fabric beyond the two sides of the gypsum board is the same. Unit 5 cuts and halves the laminated fabric between two adjacent plasterboards.

This embodiment realizes fully automatic lamination work, no manual participation is required in the lamination process, and automatic intelligent operation with a high degree of integration can be realized, and in the lamination work, by continuously connecting all the lamination fabrics from end to end, Realize continuous unwinding and laminating work, so that the fabric is pasted on the surface of the gypsum board in one piece, with good film covering effect and high efficiency, and through self-adaptive position adjustment, the fabric is evenly covered on the surface of the gypsum board, thus realizing Complete cladding of plasterboard sides improves production quality.

The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent replacements to the present application within the spirit and protection scope of the present application, and such modifications or equivalent replacements shall also be deemed to fall within the protection scope of the present application.

Claims (10)

1. A full-automatic gypsum board film covering method is characterized by comprising the following steps:

step 100, continuously conveying the gypsum board into a conveying unit of a film laminating mechanism according to a fixed distance;

200, continuously unreeling by using automatic joints of two film-coated fabric rolls, monitoring the position of the gypsum board on a conveying unit and the position of the film-coated fabric on a tensioning reel set in real time, and automatically correcting the position of the film-coated fabric to enable the film-coated fabric to be uniformly attached to the surface of the gypsum board;

step 300, adjusting the pressing strength of a pressing roller according to the thickness of the gypsum board so that the film-coated fabric is attached to the surface of the gypsum board at a fixed pressure;

and 400, folding the film-coated fabric exceeding the gypsum board at two sides of the conveying unit to complete the coating work of the side edge of the gypsum board.

2. The fully automatic gypsum board film coating method according to claim 1,

in step 100, the distance between two adjacent gypsum boards is twice the thickness of the gypsum boards, and the film-coated fabric covers the film-coated fabric on the surfaces of all gypsum boards with equal distance;

the length of the film-coated fabric between two adjacent gypsum boards is twice of the thickness of the gypsum boards, and the length of the film-coated fabric exceeding the side edge of the gypsum board is twice of the thickness of the gypsum boards.

3. The fully automatic gypsum board film coating method according to claim 1,

in step 200, two unwinding shafts capable of automatically switching positions are adopted to unwind the film-coated fabric roll, wherein the two unwinding shafts rotate around the central position of a connecting line of the two unwinding shafts so as to automatically switch the position of the film-coated fabric roll which is unwinding;

the glue-coated fabric roll releasing device comprises two unwinding shafts, wherein a rubber roller and a squeezing roller are arranged between the two unwinding shafts, the rubber roller can move towards the unwinding shafts and is far away from the unwinding shafts, the rubber roller is used for coating glue on the inner surface of a released laminating fabric when the thickness of the laminating fabric roll is lower than a set threshold value, and the squeezing roller is used for pressing down the laminating fabric coated with the glue to be adhered to the end part of a new laminating fabric roll so as to realize the joint of the laminating fabric.

4. The fully automatic gypsum board film coating method according to claim 3,

in step 200, the two unwinding shafts rotate around the center of the connection line, the rotation direction of the two unwinding shafts prevents the film-coated fabric being released from being resisted by the rubber roller and the squeezing roller, and the unwinding shaft where the film-coated fabric being unwound is located is always located above the unwinding shaft which is already unwound after the position of the unwinding shaft is switched.

5. The fully automatic gypsum board film coating method according to claim 3,

the length of a mounting shaft of the rubber roller is twice the width of the film-coated fabric roll, the rubber roller is positioned on the side edge of the unwinding shaft when the film-coated fabric roll is unwound, and the rubber roller moves towards the unwinding shaft when the thickness of the film-coated fabric roll is lower than a set threshold value to glue the inner surface of the released film-coated fabric;

and the extrusion roller compresses the coated fabric and bonds the coated fabric with a new coated fabric roll until the original coated fabric roll is released.

6. The fully automatic gypsum board film coating method according to claim 3,

in step 200, the implementation steps of performing the continuous unwinding work by using the automatic joints of the two film-covered surface material rolls are as follows:

installing a new film-coated fabric roll on the released unwinding shaft, monitoring the thickness of the winding shaft of the film-coated fabric roll in unwinding in real time, and comparing the thickness of the winding shaft with a set threshold value;

when the thickness of the winding shaft is smaller than a set threshold value, the rubber roller is moved inwards to a position between the two unwinding shafts, the unwinding film-coated fabric is attached to the rubber roller by using the extrusion roller to be coated with glue, and the extrusion roller is used for bonding the tail end of the film-coated fabric coated with the glue with the winding start end of a new film-coated fabric;

when the thickness of the reel is zero, the extrusion roller is reset, and the rubber roller moves outwards to the end part of the unreeling shaft;

and driving the film-coated fabric roll to rotate anticlockwise so that the new film-coated fabric roll moves to the position above the unwinding shaft which is already released.

7. The fully automatic gypsum board film coating method according to claim 1,

in step 400, the conveying unit is divided into two sections, the first section of conveying unit is used for folding the film-coated fabric on the two sides of the gypsum board, and the second section of conveying unit is used for folding the two sections of film-coated fabric of the gypsum board.

8. The fully automatic gypsum board film coating method according to claim 7,

in step 400, the method for folding the film-coated fabric on the two sides of the gypsum board comprises the following steps:

in the conveying process of the first section of conveying unit, a cutting mechanism is utilized to form a cut on the film-coated fabric between two adjacent gypsum boards, wherein the length of the cut is the same as the distance between the two adjacent gypsum boards, and the width of the cut is the length of the film-coated fabric beyond one side;

and after the coated fabric exceeding the two side edges of the gypsum board is folded by the coating rollers with different inclination angles, the coated fabric is adhered to the two side edges of the gypsum board.

9. The fully automatic gypsum board film coating method according to claim 8,

in step 400, the method for folding the film-coated fabric at the two ends of the gypsum board comprises the following steps:

in the conveying process of the first-stage conveying unit, cutting off the coated fabric between two adjacent gypsum boards by using a cutting mechanism, wherein the cutting position of the cutting mechanism is the central position of the coated fabric between the two adjacent gypsum boards;

the gypsum board is transmitted to second section conveying unit, sets up different inclination's cladding running roller in the both sides of second section conveying unit, and the cladding running roller will surpass the tectorial membrane surface fabric at gypsum board both ends is folding gradually to the adhesion is in gypsum board both ends.

10. A fully automatic system based on the gypsum board fully automatic film covering method of any one of claims 1 to 9, characterized by comprising:

the conveying unit (1) is used for conveying the head and the tail of the gypsum board at a fixed interval;

the film covering unreeling tensioning unit (2) is arranged above the conveying unit (1) and is used for automatically adhering two rolls of film covering fabric end to end so as to continuously convey the film covering fabric to the surface of the gypsum board and coat glue on the surface of the film covering fabric in the conveying process;

the deviation correcting unit (3) is arranged at the position of the film-covering unreeling tensioning mechanism and used for correcting the position of the film-covering fabric, so that the film-covering fabric uniformly covers the surface of the gypsum board, and the lengths of the film-covering fabric exceeding the two side edges of the gypsum board are the same;

the cutting units (4) are arranged on two sides of the conveying unit (1) and are used for cutting a rectangular notch in the film-coated fabric between two adjacent gypsum boards, the length of the rectangular notch is the distance between the two adjacent gypsum boards, and the width of the rectangular notch exceeds the width of the film-coated fabric of the gypsum boards;

the cutting unit (5) is arranged above the conveying unit (1) and is used for cutting the film-coated fabric between two adjacent gypsum boards from the center;

and the coating roller wheel assemblies (6) are arranged on two sides of the conveying unit (1), comprise a plurality of rollers with different inclination angles and are used for sequentially adhering the film-coated fabric on two opposite sides of the gypsum board to the side faces of the gypsum board.

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