KR102726004B1 - Wrapping Device - Google Patents

Abstract

The present invention relates to a film wrapping device, and the configuration of the present invention comprises: a conveyor including a moving unit that supports plywood and moves the plywood; a film supply unit that supplies a film coated with an adhesive material to the bottom, side, and top surfaces of the moved plywood; a heating unit that applies heat to the supplied film and the bottom, side, and top surfaces of the plywood; and a pressure wrapping unit that applies pressure so that the film and the side and corners of the plywood are adhesively bonded in a state where the adhesive material is melted by the heat applied by the heating unit, and the pressure wrapping unit includes a plurality of pressure rollers, and each of the plurality of pressure rollers includes a recessed bottom unit that is formed recessed from both sides of a pressure roller body and presses the bottom or top surface area of the plywood, and a recessed side unit that is formed to press the side and corner areas of the plywood.

Description

Film wrapping device {Wrapping Device}

The present invention relates to a film wrapping device, and more specifically, to a film wrapping device that can perform an adhesive finishing operation at once without requiring separate film bonding operations for the sides and edges by continuously wrapping a film on the front, sides, and part of the back of plywood, thereby increasing production efficiency.

When making furniture using plywood, films with various patterns and colors are attached to the surface of the plywood.

As an example of a technology for bonding films onto plywood, a film bonding method for applying a film to plywood, etc. using heat fusing to produce doors or various furniture with beautiful patterns or colors is disclosed in Korean Patent Publication No. 10-2001-0087824 (publication date September 26, 2001), entitled “Method for Bonding Films by Heat Fusing onto Plywood.”

When bonding a film to plywood, the side of the plywood is finished by bonding an edge film to the cut surface of the plywood side to finish the cut surface of the plywood side.

When bonding edge films to the cut surfaces of furniture plywood, a solvent-type adhesive is used to bond PP, PVC materials, etc. of 0.25 mm or less, and an edge bender is used in this process.

The side finishing of furniture plywood like this is a very important part of furniture making, and this part determines the quality and level of the furniture.

However, the side finishing work of conventional furniture plywood requires an edge film formed larger than the side of the plywood, bonding it to the side of the plywood, heating and pressurizing it, and cutting and finishing the part protruding from the side of the plywood, which not only requires a lot of manpower but also has a high rate of defective products, which increases manufacturing costs.

Publication of Patent Publication No. 10-2001-0087824

The purpose of the present invention is to solve the above-mentioned conventional problems, and to provide a film wrapping device that can perform adhesive finishing work at once without requiring separate film bonding work for the sides and edges by continuously wrapping the film on the front, sides, and part of the back of plywood, thereby increasing production efficiency.

As a means for achieving the above object, the composition of the present invention comprises: a conveyor including a moving unit that supports plywood and moves the plywood; a film supply unit that supplies a film coated with an adhesive material from the bottom surface of the moved plywood to the sides and upper surfaces; a heating unit that applies heat to the supplied film and the bottom, sides, and upper surfaces of the plywood; and a pressure wrapping unit that applies pressure so that the film and the sides and corners of the plywood are adhesively bonded in a state where the adhesive material is melted by the heat applied by the heating unit, and it is preferable that the pressure wrapping unit comprises a plurality of pressure rollers, and each of the plurality of pressure rollers comprises a recessed pressure unit including a recessed bottom portion that is recessed from both sides of the pressure roller body and is formed to pressurize the bottom or upper surface area of the plywood, and a recessed side portion that is formed to simultaneously pressurize the side and corner areas of the plywood.

The composition of the present invention preferably includes a roller heating unit that applies heat to a film that is pressed and is arranged over the entire area of the depressed pressure unit; a plywood heating unit that applies heat to a side of a moving plywood; and a film heating unit that applies heat to a supplied film.

The configuration of the present invention is such that the sunken side portions of the pressure rollers are formed by being sunken in a shape that becomes narrower as they go from both sides of the pressure roller body in the sunken direction, and it is preferable that the sunken side portions of a plurality of pressure rollers are formed such that the inclination of the side portions of the pressure rollers sequentially decreases along the direction of movement of the plywood with respect to the vertical direction of the direction of movement of the plywood, so that the pressing force gradually increases.

It is preferable that the above-mentioned sunken side portion is formed by being sunken in an inclined shape that becomes narrower as it goes from both sides of the pressure roller body in the sunken direction.

It is preferable that the configuration of the present invention further includes an alignment section that aligns the front end side of the plywood in the moving direction and the front end side of the film in the same manner.

The composition of the present invention further includes a cutting unit that cuts the rearmost side of the plywood and the rearmost side of the film in the moving direction to be identical while the side and corner of the film and the plywood are adhesively bonded by the pressurized wrapping unit, and it is preferable that the cutting unit includes an end cutting unit that cuts the rear end of the film; and an upper and lower cutting unit that cuts the film portions on the upper and lower sides of the corners of the plywood.

It is preferable that the composition of the present invention further includes an RT cutting section that processes the bonding surface of the plywood and cuts it so that the bonding surface becomes uniform.

The composition of the present invention preferably further includes a temperature sensor that detects the temperature of the side surface of the moving plywood, the edge of the plywood, the supplied film, and the heating unit; and a control unit that stores the temperature of the heating unit for causing the film and the side surface and edge of the plywood to be normally adhesively bonded with respect to a plurality of temperatures of the side surface of the moving plywood, the edge of the plywood, and the supplied film, and controls the heating unit based on the temperature of the side surface of the plywood, the edge of the plywood, and the film.

In the configuration of the present invention, it is preferable that the control unit adjusts the pressing time of the plurality of pressing rollers based on the temperature rise time of the heating unit from the temperature of the side surface of the plywood, the edge of the plywood, and the film to a temperature at which the film and the side surface and edge of the plywood are normally adhesively bonded.

According to the present invention, by continuously wrapping a film on the front, sides, and part of the back of plywood, it is possible to perform an adhesive finishing operation at once without requiring separate film bonding operations for the sides and edges, thereby increasing production efficiency.

In addition, according to the present invention, while applying heat to the sides of the film and plywood, a film coated with an adhesive material is supplied to the side of the plywood, and while the film is placed on the side of the plywood, the film is wrapped by pressing the side of the plywood with a pressure roller while applying heat, so that the work becomes simpler and the efficiency of the work can be improved.

In addition, according to the present invention, the film placed on the side surface and the edge area of the plywood can be efficiently adhered to the side surface and the edge area of the plywood, and the side surface of the plywood, the film, and the pressure roller are heated before the film is placed on the side surface of the plywood, and heat is applied while the film is adhered to the side surface of the plywood, so that the wrapping operation can be performed accurately and efficiently.

In addition, according to the present invention, the film arranged in the edge area of the plywood can have a shape capable of efficiently pressurizing the film, and since the front end side in the direction in which the plywood moves can be aligned with the front end side of the film, the film does not go beyond the front end side of the plywood, so that a cutting operation is not necessary, and thus the efficiency of the operation can be further improved.

In addition, according to the present invention, it is possible to cut the rear end portion other than the portion where the film is to be attached to the side of the plywood, and there is an effect of being able to cut the portion of the film that may protrude to the upper or lower surface of the plywood other than the front and rear ends of the plywood with respect to the direction of movement.

In addition, according to the present invention, since the side of the plywood is cut flat before the film is attached, the film can be attached flatly and well to the side of the plywood, and the film can be attached to the side of the plywood while the adhesive is well melted, so that the efficiency and reliability of the work can be improved.

In addition, according to the present invention, there is an effect that the pressing time of the pressing roller, which presses the film to the side of the plywood, can be controlled according to the temperature at which the side and edge of the plywood are normally bonded.

Figure 1 is a configuration diagram of a film wrapping device according to one embodiment of the present invention.
FIG. 2 is an exemplary diagram showing the operation of a film wrapping device according to one embodiment of the present invention, in which a film is supplied to plywood.
FIG. 3 is an exemplary drawing of a sunken pressure portion of a pressure roller of a film wrapping device according to an embodiment of the present invention.
FIG. 4 is an exemplary diagram of an adhesive material extrusion unit of a film wrapping device according to an embodiment of the present invention.
Figure 5 is a control block diagram of a film wrapping device according to one embodiment of the present invention.

Hereinafter, in order to explain in detail the preferred embodiments of the present invention to a degree that those skilled in the art can easily practice the present invention, reference will be made to the accompanying drawings. The purpose, operation, and effect of the present invention, as well as other purposes, features, and operational advantages, will become clearer through the description of the preferred embodiments.

FIG. 1 is a schematic diagram showing the overall configuration of a film wrapping device according to an embodiment of the present invention, FIG. 2 is an exemplary diagram showing an operation in which a film (3) is supplied to the side of a plywood (2), FIG. 3 is an exemplary diagram showing a depression pressure part (412, 422), FIG. 4 is an exemplary diagram showing an adhesive material extrusion part (90), and FIG. 5 is a control block diagram of a film wrapping device (1).

As illustrated in FIGS. 1 to 5, a film wrapping device (1) according to one embodiment of the present invention includes a conveyor (10), a film supply unit (20), a heating unit (30), a pressure wrapping unit (40), an alignment unit (50), a cutting unit (60), a plywood guide (70), a temperature sensor (80), an adhesive material extrusion unit (90), and a control unit (110).

The conveyor (10) includes a moving part (11) and a moving passage (12).

The moving part (11) is placed on the plywood guide (70) and moves the plywood (2) placed on the upper side in one direction while supporting the plywood (2). The moving part (11) includes a moving belt and a belt driving part (122).

The moving belt may be a conveyor belt formed as a closed loop.

The belt drive unit (122) drives the conveyor belt formed as a closed loop to rotate. The belt drive unit (122) may be formed of a rotation motor and a sprocket.

The film supply unit (20) supplies a film (3) coated with an adhesive material from the bottom to the sides and top of the moving plywood (2). The film supply unit (20) includes a film mounting unit (21), a turntable (22), and a film supply control unit (23). Here, the adhesive material may be hardened while being coated on the film (3) or may be in a molten state.

The film mounting portion (21) is formed so that a hole formed in the center of a film (3) having a roll shape can be inserted. It has a shape that protrudes from the center area of a turntable (22) to be described later.

The turntable (22) has a shape that supports the film (3) while the film (3) in the form of a roll is mounted on the film mounting portion (21). The turntable (22) may be composed of a round plate-shaped table body and a rotation shaft, and the rotation shaft may be rotatably supported and connected to a plywood support portion (11).

The film supply control unit (23) includes a film phage roll (231) and a roll driving unit (232).

The film spool (231) grips the film (3) supported on the turntable (22) and acts as a guide to stably move it to the side of the plywood (2). The film spool (231) is formed as a pair on the left and right sides of the film (3) so that it can grip the film (3), and when it rotates while gripping the film (3), it allows the film (3) to move to the bottom, side, and top of the plywood (2).

The roll drive unit (232) may be formed of a rotary motor that rotates the film phage roll (231).

The heating unit (30) applies heat to the bottom, sides, corners, top, etc. of the supplied film (3) and plywood (2). The heating unit (30) includes a roller heating unit (31), a plywood heating unit (32), and a film heating unit (33). The heating unit (30) applies heat to the bottom, sides, corners, top, and film (3) and the pressure rollers (41, 42) of the plywood (2), thereby melting the adhesive material coated on the film (3) before the film (3) and the plywood (2) are bonded and while the film (3) and the plywood (2) are bonded by pressure, thereby facilitating bonding.

The roller heating part (31) can be placed over the entire area of the recessed pressurizing part (412, 422) of the pressurizing roller (41, 42) to apply heat.

The plywood heating unit (32) can apply heat to the bottom, sides, corners, and top of the moving plywood (2).

The film heating unit (33) can apply heat to the supplied film (3).

The pressurized wrapping unit (40) includes a first pressurized roller (41), a second pressurized roller (42), and a roller driving unit (43). In Fig. 1, the pressurized wrapping unit (40) is illustrated as being installed only at the lower portion of the plywood guide (70) for convenience, but it is also installed at the upper portion of the plywood guide (70).

The pressure wrapping unit (40) includes a first pressure roller (41) and a second pressure roller (42) that apply pressure so that the film (3) and the side and corner of the plywood (2) are adhesively bonded while the adhesive material is melted by the heat applied by the heating unit (30). In Fig. 1, only two pressure rollers, the first pressure roller (41) and the second pressure roller (42), are illustrated as the pressure wrapping unit (40), but it may include two or more pressure rollers.

The first pressure roller (41) and the second pressure roller (42) are arranged parallel to each other along the direction in which the plywood (2) moves so as to press the side and corner of the plywood (2).

The first pressure roller (41) includes a first pressure roller body (411) and a first depressed pressure part (412).

The first depressed pressure portion (412) includes a first depressed bottom portion (412-1) and a first depressed side portion (412-2) formed along the outer surface of the first pressure roller body (411).

The first sunken floor portion (412-1) is formed by sinking from both sides of the first pressure roller body (411) and can be formed to pressurize the side area of the plywood (2).

The first depressed side portion (412-2) can be formed to pressurize the side and corner areas of the plywood (2). The first depressed side portion (412-2) can be formed by being slanted and depressed in a shape that becomes narrower as it goes from both sides of the pressure roller body (411) in the depression direction.

The second pressure roller (42) includes a second pressure roller body (421) and a second depressed pressure portion (422) formed along the outer surface of the second pressure roller body (421).

The second sinking pressure part (422) includes a second sinking bottom part (422-1) and a second sinking side part (422-2).

The second sunken floor portion (422-1) is formed by sinking from both sides of the second pressure roller body (421) and can be formed to pressurize the side area of the plywood (2).

The second depressed side portion (422-2) can be formed to pressurize the corner area of the plywood (2). The second depressed side portion (422-2) can be formed by being sunk in an inclined shape that becomes narrower as it goes from the area on both sides of the second pressure roller body (421) in the sunk direction.

The roller driving unit (43) can drive rotation of at least one of the first pressure roller (41) and the second pressure roller (42).

The alignment unit (50) can ensure that the front end side of the plywood (2) in the moving direction and the front end side of the film (3) are aligned in the same manner. The alignment unit (50) includes an alignment guide (51) and a guide driving unit (52).

The alignment guide (51) stops the moving plywood (2) and film (3) so that the leading edge of the plywood (2) and the leading edge of the film (3) are aligned in the same manner.

The guide driving unit (52) may be a cylinder and piston that allows the alignment guide (51) to move between an alignment position and an alignment de-alignment position so that the front end of the plywood (2) and the front end of the film (3) are aligned identically. In addition, the guide driving unit (52) may be formed of a rotary motor.

The cutting section (60) can cut the film (3) and the side and corner of the plywood (2) by the pressure wrapping section (40) so that the rearmost side of the plywood (2) in the moving direction and the rearmost side of the film (3) are the same. The cutting section (60) includes an end cutting section (61), an upper and lower cutting section (62), and an RT cutting section (63).

The end cutting section (61) can cut the rear end of the film (3).

The upper and lower cutting sections (62) can cut the film (3) portions on the upper and lower edges of the plywood (2).

The RT cutting section (63) can cut the bonding surface of the plywood (2) so that the bonding surface becomes uniform. The RT cutting section (63) can be formed in a roller shape so that a wide surface can be ground and cut.

The plywood guide (70) guides the movement path of the plywood (2) moved by the moving part (12) on the plywood support part (11). The plywood guide (70) can be formed along the moving part (12) on the plywood support part (11) so that the shape of the plywood (2) is maintained the same throughout the movement of the plywood (2) by the moving part (12).

The temperature sensor (80) can detect the temperature of the side and corner of the moving plywood (2) and the film (3) and the heating unit (30). The temperature sensor (80) includes a side plate temperature sensor (81), a corner temperature sensor (82), a film temperature sensor (83), a roller heating temperature sensor (84), a plywood heating temperature sensor (85), and a film heating temperature sensor (86).

The side plate temperature sensor (81) detects the side temperature of the plywood (2).

The corner temperature sensor (82) detects the corner temperature of the plywood (2).

The film temperature sensor (83) detects the temperature of the film (3).

The roller heating temperature sensor (84) can detect the temperature of the roller heating part (31) of the first pressure roller (41) and the second pressure roller (42).

The plywood heating temperature sensor (85) detects the temperature of the plywood heating section (32).

The film heating temperature sensor (86) detects the temperature of the film heating unit (33).

The adhesive material extrusion unit (90) includes an adhesive material cylinder (91), an adhesive material piston (92), a hydraulic supply unit (93), an adhesive material extrusion nozzle (94), an adhesive material tank (95), an adhesive material supply pump (96), a first extrusion valve (97), a second extrusion valve (98), an adhesive material heating unit (99), and an adhesive material sensor (100).

The adhesive material cylinder (91), the adhesive material piston (92), and the hydraulic supply unit (93) operate to extrude the adhesive material (4).

The adhesive material extrusion nozzle (94) is a nozzle that thinly extrudes the molten adhesive material (4) moved by the adhesive material supply pump (96) onto the surface of the film (3).

The adhesive material tank (95) is a storage tank that stores the adhesive material (4).

The adhesive material supply pump (96) moves the molten adhesive material (4) stored in the adhesive material tank (95) to the adhesive material cylinder (91).

The first extrusion valve (97) is arranged in a pipe between the adhesive material tank (95) and the adhesive material cylinder (91) to control the movement of the adhesive material (4).

The second extrusion valve (98) controls the movement of the adhesive material (4) moved through the pipe by the adhesive material piston (92) driven by the hydraulic supply unit (93).

The adhesive material heating unit (99) is placed on the adhesive material tank (95), the adhesive material cylinder (91) and the pipe to heat the adhesive material (4) so that it becomes molten.

The adhesive material sensor (100) detects the thickness of the adhesive material (4) extruded onto the film (3).

The control unit (110) stores the temperature of the heating unit (30) for causing the film (3) and the side and side edges of the plywood (2) to be normally bonded to each other for a plurality of temperatures of the side of the moving plywood (2), the edge of the plywood (2), and the supplied film (3), and can control the heating unit (30) based on the temperature detected from the temperature sensor (80) of the side of the plywood (2), the edge of the plywood (2), and the supplied film (3).

The control unit (110) can control the pressing time of the plurality of pressing rollers (41, 42) based on the temperature detected from the temperature sensor (80) of the side of the plywood (2), the edge of the plywood (2) and the supplied film (3) and the temperature rise time of the heating unit (30) to a temperature that allows the film (3) and the side and edge of the plywood (2) to be normally bonded.

Figure 2 is an example of an operation in which a film (3) is supplied to plywood (2).

Figure 2 (a) shows the plywood (2) moving from left to right by the moving part (12).

In Fig. 2 (b), the control unit (110) controls the roll driving unit (232) to supply the film (3) to the side of the plywood (2), so that the film (3) is placed on the side of the plywood (2). Here, since the front end side of the plywood (2) and the front end side of the film (3) may not be aligned identically, the alignment guide (51) is moved to the alignment position to align them. As a result, the front end side of the plywood (2) and the front end side of the film (3) are aligned identically and moved to the right.

Fig. 2 (c) shows a shape in which a film (3) is supplied to the plywood (2) and wrapped. In Fig. 2 (c), the film (3) is depicted as being wrapped on all of the bottom, side, and top surfaces of the plywood (2), but it may also be wrapped on part of the bottom, side, and top surfaces.

Figure 3 is an example of a sunken pressure part (412, 422) of a pressure roller (41, 42).

In Fig. 3 (a), the first depressed side surface (412-2) of the first pressure roller (41) arranged in front of the moving direction of the plywood (2) can be formed to be inclined at 10 degrees with respect to the vertical direction of the moving direction of the plywood. As a result, the side surface of the plywood (2) and the film (3) are pressed, but are in a slightly less pressed state.

In Fig. 3 (b), the second depressed side surface (422-2) of the second pressure roller (42) arranged behind the first pressure roller (41) arranged forward in the moving direction of the plywood (2) may be formed to be inclined at an angle of 5 degrees with respect to the vertical direction of the moving direction of the plywood. Accordingly, after the side surface of the plywood (2) and the film (3) are pressed by the first pressure roller (41), they are pressed slightly less and then pressed more by the second pressure roller (42), thereby enabling good adhesive bonding.

By forming the first pressure roller (41) and the second pressure roller (42) so that the inclination along the plywood moving direction is sequentially reduced with respect to the vertical direction of the plywood moving direction, the pressure can be gradually increased.

The following describes possible embodiments other than the above embodiments.

The control unit (110) can variably control the rotation speed of the roller drive unit (232) according to the movement speed of the moving unit (12), and can control the rotation speed of the plurality of pressure rollers (41, 42). Accordingly, the control unit (110) can control the hydraulic supply unit (93) so that the adhesive material (4) is extruded by the adhesive material extrusion nozzle (94).

Here, the control unit (110) can control the adhesive material heating unit (99) according to the extrusion speed of the adhesive material (4) so that the adhesive material is melted.

The control unit (110) can detect the amount of adhesive material (4) in the adhesive material cylinder (91) and control the adhesive material supply pump (96) so that the adhesive material (4) is supplied from the adhesive material tank (95) to the adhesive material cylinder (91).

The control unit (110) can control the opening and closing of the second extrusion valve (98) so as to adjust the extrusion amount of the adhesive material (4).

The control unit (110) stores the normal thickness range of the adhesive material (4) extruded onto the film (3), and can control the adhesive material heating unit (99), the second extrusion valve (98), and the hydraulic supply unit (93) according to the thickness of the adhesive material (4) detected by the adhesive material sensor (100).

The control unit (110) can increase the operation of the hydraulic supply unit (93) when the temperature of the adhesive material heating unit (99) is low so that the adhesive material (4) is extruded, and can decrease the operation of the hydraulic supply unit (93) when the temperature of the adhesive material heating unit (99) is high so that the adhesive material (4) is extruded so that the normal thickness range of the adhesive material (4) is reached.

Here, the moving part (11) may further include a suction cup part (not shown) that suction cups the upper surface or the rear surface of the plywood with a plurality of suction cups to move the plywood (2). The suction cup part may be moved to the upper surface or the lower surface of the plywood (2) and may be provided to rotate the plywood (2). Accordingly, when the film (3) is adhered to one side of the plywood (2) by the pressure rollers (41, 42), the plywood (2) may be rotated so that the film (3) is placed on the next side of the plywood (2) with respect to the direction of rotation, and then the film (3) may be adhered to the next side by the pressure rollers (41, 42). Then, by repeating this operation, the film (3) may be continuously adhered to all sides of the plywood (2) so that wrapping may be performed.

In a case where wrapping is performed continuously like this, the upper plywood guide (70) may not exist.

In this way, by means of a wrapping device (1) that adheres and fixes a film (3) to the bottom, side, and top surfaces of the plywood (2), heat is applied to the film (3) and the side surfaces of the plywood (2), while the film (3) coated with an adhesive material is supplied to the bottom, side, and top surfaces of the plywood (2), and while the film (3) is placed on the bottom, side, and top surfaces of the plywood (2), heat is applied to the side and corners of the plywood (1) by the pressure rollers (41, 42), thereby simplifying the work and improving the efficiency of the work.

In addition, the film (3) placed on the side surface of the plywood (2) and the corner area of the plywood (2) can be efficiently adhered to the side surface and corner area of the plywood (2), and the bottom surface, side surface, and top surface of the plywood (2) and the film (3) and the pressure rollers (41, 42) can be heated before the film (3) is placed on the bottom surface, side surface, and top surface of the plywood (3), and the film (3) can be applied while the film (3) is adhered to the side surface of the plywood (2), so that the wrapping operation can be performed accurately and efficiently.

In addition, it can have a shape that can efficiently pressurize the film (3) placed at the edge area of the plywood (2), and since the front end side of the direction in which the plywood (2) moves can be aligned with the front end side of the film (3), the film (3) does not go beyond the front end side of the plywood (2), so that cutting work is not necessary, and thus the efficiency of the work can be further improved.

In addition, the rear end of the film (3) other than the part to be attached to the side of the plywood (2) can be cut, and the part of the film that may protrude from the upper and lower surfaces of the plywood (3) other than the front and rear ends of the plywood (2) in the direction of movement can be cut.

In addition, since the side of the plywood (2) is cut flat before the film (3) is attached, the film (3) can be attached flatly to the side of the plywood (2), and the film (3) can be attached to the bottom, side, and top of the plywood (2) while the adhesive is well melted, so that the efficiency and reliability of the work can be improved.

In addition, the pressing time of the pressing rollers (41, 42) that pressurize the film to the sides and edges of the plywood (2) can be adjusted according to the temperature at which the sides and edges of the plywood (2) are normally bonded.

1: Wrapping device 2: Plywood
3: Film 4: Adhesive material
10: Conveyor 11: Moving part
12: Movement passage
20: Film supply section 21: Film loading section
22: Turntable 23: Film supply control unit
231: Film phage roll 232: Roll drive unit
30: Heating section 31: Roller heating section
32: Plywood heating section 33: Film heating section
40: Pressurized wrapping section 41: First pressurized roller
411: First pressure roller body 412: First depressed pressure part
412-1: First depression bottom 412-2: First depression side
42: Second pressure roller 421: Second pressure roller body
422: Second sinking pressure section 422-1: Second sinking bottom section
422-2: Second depression side 43: Roller drive part
50: Alignment section 51: Alignment guide
52: Guide drive unit
60: Cutting section 61: End cutting section
62: Upper and lower cutting section 63: RT cutting section
70: Plywood Guide
80: Temperature sensor 81: Side plate temperature sensor
82: Corner temperature sensor 83: Film temperature sensor
84: Roller heating temperature sensor 85: Plywood heating temperature sensor
86: Film heating temperature sensor
90: Adhesive material extrusion part 91: Adhesive material cylinder
92: Adhesive material piston 93: Hydraulic supply part
94: Adhesive material extrusion nozzle 95: Adhesive material tank
96: Adhesive material supply pump 97: First extrusion valve
98: Second extrusion valve 99: Adhesive material heating section
100: Adhesive material sensor
110: Control Unit

Claims (8)

A conveyor comprising a moving member that supports plywood and moves the plywood;
A film supply unit that supplies a film coated with adhesive material from the bottom to the sides and top of the moving plywood;
A heating unit that applies heat to the bottom, sides, and top of the supplied film and plywood;
A pressure wrapping unit that applies pressure so that the sides and edges of the film and the plywood are adhesively bonded while the adhesive material is melted by the heat applied by the heating unit;
An alignment section that aligns the leading edge of the plywood in the moving direction and the leading edge of the film in the same manner;
A temperature sensor that detects the temperature of the side of the moving plywood, the edge of the plywood, the supplied film, and the heating part; and
A control unit storing the temperature of the heating unit for causing the film and the side and side edges of the plywood to be normally bonded to each other for a plurality of temperatures of the side of the plywood being moved, the edge of the plywood, and the supplied film, and controlling the heating unit based on the temperature of the side of the plywood, the edge of the plywood, and the film;
The above heating part,
A roller heating section that is arranged over the entire area of the pressure relief section and applies heat to the film being pressed;
A plywood heating unit that applies heat to the side of the plywood being moved; and
Includes a film heating unit that applies heat to the supplied film,
The above pressurized wrapping section includes a plurality of pressurized rollers,
Each of the above plurality of pressure rollers,
A recessed bottom portion formed from both sides of the pressure roller body and formed to pressurize the bottom or top surface area of the plywood,
Including the recessed pressurizing portion including the recessed side portion formed to simultaneously pressurize the side and corner areas of the above plywood,
The sunken side of the above pressure roller is formed by being sunken in a slanted shape that becomes narrower as it goes from both sides of the pressure roller body in the sunken direction.
The sunken side portions of the multiple pressure rollers are formed so that the inclination is sequentially reduced along the direction of movement of the plywood with respect to the vertical direction of movement of the plywood, thereby gradually increasing the pressure.
A film wrapping device characterized in that the control unit adjusts the pressing time of the plurality of pressing rollers based on the temperature rising time of the heating unit from the temperature of the side surface of the plywood, the edge of the plywood, and the film to a temperature at which the film and the side surface and edge of the plywood are normally adhesively bonded. delete delete delete In the first paragraph,
It further includes a cutting section that cuts the film so that the rearmost side of the plywood and the rearmost side of the film in the moving direction are identical while the side and corner of the film and the plywood are bonded by the pressure wrapping section.
The above cutting part,
An end cutting section for cutting the rear end of the above film; and
A film wrapping device characterized by including upper and lower cutting sections for cutting film portions on the upper and lower edges of the plywood. In clause 5,
A film wrapping device characterized by further including an RT cutting unit that processes the adhesive surface of the above plywood and cuts it so that the adhesive surface becomes uniform. delete delete

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