CN112793830B - Strip-shaped section film pasting method and device - Google Patents

Abstract

The invention provides a method and a device for sticking a film on a strip-shaped section; through making two bar section bars hug closely the range and carry out the pad pasting around the axial, after the film pastes the surface that covers preceding bar section bar completely and partially pastes a back bar section bar, heat the film in clearance department between two bar section bars, thereby make the temperature of the film in this clearance department rise, intensity reduces, the mode that rethread was dragged can make the film break off from this clearance department, thereby need not to cut off the film with the cutter, the clearance between two bar section bars can be kept for littleer, be favorable to reducing the length that the section of film stretches out the terminal surface of bar section bar.

Description

Strip-shaped section film pasting method and device

Technical Field

The invention relates to the technical field of section bar packaging equipment, in particular to a strip-shaped section bar film pasting method and a strip-shaped section bar film pasting device.

Background

The packaging process of the bar-shaped profile (such as, but not limited to, an aluminum profile) generally includes the step of coating the outer side surface of the profile with a film, and the number of the side surfaces to be coated is different according to the specific shape of the profile. The application of a film to a strip-shaped profile is generally carried out in a film-application machine, in which the profile is moved in the same straight line in the axial direction in sequence during operation, and as the profile moves, the film is drawn from the film roll and pressed against the profile surface by a press roll.

At present, the cutting of the film mainly comprises two modes of manual cutting and automatic cutting. The specific process of manual cutting off is as follows: when the position of waiting to cut off between two back section bars moved to the station of cutting off, stopped the transport of section bar, then cut off the film by the manual work with the cutter, this kind of mode is inefficient, and need consume a large amount of manpowers, workman's intensity of labour is big moreover. The specific process of automatic cutting off is as follows: when the position to be cut between the front section and the rear section moves to the cutting station, the conveying of the sections is stopped, and then the cutter arranged at the cutting station acts to automatically cut off the film. No matter which of the two modes is adopted, because the cutter is required to extend into the position between the two sectional materials, a large enough gap is required to be reserved between the front sectional material and the rear sectional material, so that after the film is cut off, the section of the film can extend out of the sectional materials (namely, the length of the film attached to the sectional materials is larger than that of the sectional materials), and in the transportation process of the sectional materials, the part extending out of the sectional materials is easy to rub against other objects to cause the film to be torn off the sectional materials.

It is seen that the prior art is susceptible to improvements and enhancements.

Disclosure of Invention

In view of the defects of the prior art, the invention aims to provide a strip-shaped section film pasting method and device, which are beneficial to reducing the length of the section of a film extending out of the end face of the strip-shaped section.

In a first aspect, an embodiment of the present application provides a strip-shaped profile film pasting device, including:

a machine base;

the first conveying mechanism is arranged at the top of the machine base and is used for conveying the strip-shaped section;

the unwinding mechanism is used for unwinding the film;

at least one film pressing roller for pressing the film to the side of the strip-shaped section bar;

the heating device is used for heating the thin film at the gap between two strip-shaped sections which are arranged in the front-back direction along the axial direction;

and the second conveying mechanism is arranged at the downstream of the heating device and is used for being matched with the first conveying mechanism to stretch and break the film from the gap.

The strip section bar pad pasting device that this application embodiment provided heats through the film to the clearance department between two strip section bars of arranging around along the axial to the temperature that makes the film of this clearance department risees, and intensity reduces, and the mode that the rethread was dragged can make the film break off from this clearance department, thereby need not to cut off the film with the cutter, and the clearance between two strip section bars can be kept for littleer, is favorable to reducing the length that the section of film stretches out the terminal surface of strip section bar.

In some embodiments, the heating device comprises a heating box, a blowing mechanism and a plurality of heaters; the heating box comprises a channel for the strip-shaped section to pass through and an annular air duct arranged around the channel; a plurality of first air outlet holes communicated with the annular air duct are uniformly formed in the side wall of the channel; the blowing mechanism is used for blowing air to the annular air duct; the heater is arranged in the blowing mechanism and/or the annular air duct.

Preferably, the heating box further comprises an outer shell, and an isolation cavity is arranged between the outer wall of the annular air duct and the outer shell.

Preferably, the channel is a rectangular channel, the annular air duct is a return-shaped air duct, and the upper part, the lower part, the left part and the right part of the annular air duct are respectively provided with at least one heater.

Preferably, the blowing mechanism comprises a blowing cylinder body with one end communicated with the annular air channel, a fan blade arranged in the blowing cylinder body, and a fan motor used for driving the fan blade to rotate.

In other embodiments, the heating device comprises at least one hot air module; the hot air module comprises an air blowing box with an inner cavity and a hot air blower for blowing hot air to the inner cavity of the air blowing box; one side of the blowing box facing the strip-shaped section bar is uniformly provided with a plurality of second air outlet holes.

Preferably, the blowing box includes a connection portion connected to a blowing port of the hot air blower, and an expansion portion gradually expanding in a direction away from the connection portion; the second air outlet is arranged on the wall plate opposite to the air blowing opening.

Preferably, two flow distribution plates are arranged in the expansion part, divide the expansion part into three flow passages and divide the air flow sent from the air blowing port into three parts to flow from the three flow passages respectively.

Preferably, the number of the hot air modules is four, a square passage is enclosed by one side of each hot air module provided with the second air outlet, and the passage is used for allowing the strip-shaped section bar to pass through.

In a second aspect, an embodiment of the present application provides a strip-shaped profile film pasting method, including the steps of:

two strip-shaped sectional materials are arranged in a close fit manner along the axial direction;

the film is pasted on the surface of the strip-shaped section along the axial direction;

after the film is completely attached to the surface of the previous strip-shaped section and the next strip-shaped section is partially attached to the surface of the previous strip-shaped section, heating the film at the gap between the two strip-shaped sections;

moving the previous strip away from the subsequent strip to cause the film to stretch-break from the gap.

The strip-shaped section film pasting method provided by the embodiment of the application heats the film at the gap between two strip-shaped sections which are arranged in the front-back direction along the axial direction, so that the temperature of the film at the gap is increased, the strength is reduced, the film can be disconnected from the gap in a pulling mode, the film is not required to be cut off by a cutter, the gap between the two strip-shaped sections can be kept smaller, and the reduction of the length of the section of the film extending out of the end face of the strip-shaped section is facilitated.

Has the advantages that:

the invention provides a method and a device for sticking a film on a strip-shaped section, which are used for leading two strip-shaped sections to be clung to and arranged front and back along the axial direction and sticking the film, heating the film at the gap between the two strip-shaped sections after the film is completely stuck on the surface of the previous strip-shaped section and the next strip-shaped section is partially stuck on the surface of the previous strip-shaped section, thus leading the temperature of the film at the gap to be increased and the strength to be reduced, and leading the film to be disconnected from the gap by pulling, thereby needing no cutter to cut the film, leading the gap between the two strip-shaped sections to be smaller and being beneficial to reducing the length of the section of the film extending out of the end surface of the strip-shaped section.

Drawings

Fig. 1 is a perspective view of a first strip-shaped profile film sticking device provided in an embodiment of the present application.

Fig. 2 is a front view of a first strip-shaped section film sticking device provided in the embodiment of the present application.

Fig. 3 is a top view of a first strip-shaped section film sticking device provided in the embodiments of the present application.

Fig. 4 is a perspective view of a heating device in a first strip-shaped section film laminating device according to an embodiment of the present application.

Fig. 5 is a cross-sectional view of a heating device in a first strip-shaped section film laminating device provided by an embodiment of the application.

Fig. 6 is a perspective view of a second strip-shaped section film sticking device provided in the embodiment of the present application.

Fig. 7 is a perspective view of a heating device in a second strip-shaped section film laminating device according to an embodiment of the present application.

Fig. 8 is a cross-sectional view of a hot air module in a second strip-shaped section film sticking device according to an embodiment of the present application.

Description of reference numerals: 1. a machine base; 2. a first conveying mechanism; 3. an unwinding mechanism; 4. a film pressing roller; 5. a heating device; 501. a heating box; 502. a blowing mechanism; 503. a heater; 504. a channel; 505. an annular air duct; 506. a first air outlet; 507. an outer housing; 508. an isolation chamber; 509. a first air equalizing plate; 510. a blowing cylinder; 511. a fan blade; 512. a fan motor; 513. a second air equalizing plate; 514. an air inlet; 515. a bearing seat; 516. a motor mounting bracket; 517. an adjustment device; 518. a hot air module; 519. a blowing box; 520. a hot air blower; 521. a second air outlet hole; 522. an aisle; 523. a connecting portion; 524. an expansion section; 525. a flow distribution plate; 526. a front plate portion; 527. a middle plate portion; 528. a rear plate portion; 6. a second conveying mechanism; 7. adjusting the sliding seat; 90. a strip-shaped section bar.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

The following disclosure provides embodiments or examples for implementing different configurations of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.

Referring to fig. 1 to 8, the present invention provides a strip-shaped film pasting device, which includes:

a machine base 1;

the first conveying mechanism 2 is arranged at the top of the machine base 1 and is used for conveying the strip-shaped section bar 90;

the unwinding mechanism 3 is used for unwinding the film;

at least one film pressing roller 4 for pressing the film against the side of the strip-shaped section bar 90;

the heating device 5 is used for heating the film at the gap between the two strip-shaped sectional materials 90 which are arranged in the front-back direction along the axial direction;

and a second conveying mechanism 6 arranged at the downstream of the heating device 5 and used for matching with the first conveying mechanism 2 to break the film from the gap.

When in work, two strip-shaped sectional materials 90 are axially arranged in tandem and sent into the first conveying mechanism 2, and the front and rear end faces of the two bar-shaped profiles 90 are close to each other as much as possible to ensure that the gap between the two bar-shaped profiles 90 is small, when the strip-shaped section bar 90 passes through the position of the film pressing roller 4, the film pressing roller 4 presses the film unreeled by the unreeling mechanism 3 on the side surface of the strip-shaped section bar 90, when the film is completely attached to the surface of the previous strip-shaped section 90 and partially attached to the next strip-shaped section 90, the film in the gap between the two strip-shaped profiles 90 is heated, so that the temperature of the film in the gap is increased, the strength is reduced, the film can be disconnected from the gap by pulling, therefore, the film is not required to be cut off by a cutter, the gap between the two strip-shaped sectional materials can be kept smaller, and the length of the section of the film extending out of the end face of the strip-shaped sectional material is favorably reduced.

Specifically, when the film is stretch-broken, the first conveying mechanism 2 may stop conveying to stop the movement of the next bar-shaped section 90, and the second conveying mechanism 6 keeps conveying to continue the movement of the previous bar-shaped section 90, so that the two bar-shaped sections 90 are away from the stretch-broken film; the first conveying mechanism 2 can also keep the original speed to continue conveying so as to enable the next strip-shaped section 90 to move at the original speed, and meanwhile, the second conveying mechanism 6 can accelerate conveying so as to enable the previous strip-shaped section 90 to move at an accelerated speed, so that the two strip-shaped sections 90 are far away from each other to break the film.

In some embodiments, see fig. 1-5, the heating device 5 comprises a heating box 501, a blowing mechanism 502, and a number of heaters 503; the heating box 501 comprises a channel 504 for the strip-shaped section bar 90 to pass through, and an annular air duct 505 arranged around the channel 504; a plurality of first air outlet holes 506 communicated with the annular air duct 505 are uniformly formed in the side wall of the channel 504; the blowing mechanism 502 is used for blowing air to the annular air duct 505; the heater 503 is disposed in the blowing mechanism 502 and/or the annular air duct 505.

When the heating device 5 works, the air blowing mechanism 502 blows air into the annular air duct 505, the air flow is heated by the heater 503 to become hot air, and the hot air is uniformly blown out from the first air outlet holes 506, so that the hot air can be uniformly blown to each side surface of the strip-shaped section bar 90, and the films on each side surface are uniformly heated. Due to the fact that the annular air duct 505 arranged around the channel 504 is arranged, only one blowing mechanism 502 needs to be arranged, the uniformity of air flow blown out of the first air outlet holes 506 can be guaranteed, a plurality of blowing mechanisms 502 do not need to be arranged, and energy consumption is reduced.

It should be noted that, because the gap between the front and rear two strip-shaped profiles 90 is small, the film at the gap can be heated during heating, and the film in a certain range around the gap can also be heated, but because the strip-shaped profiles 90 have good heat conductivity, the temperature rise of the film adhered to the strip-shaped profiles 90 is small, the strength reduction is small, so that the strength reduction of the film only at the gap after heating is large, and the film is ensured to be reliably disconnected from the gap during pulling.

Preferably, referring to fig. 5, the heating box 501 further includes an outer casing 507, and an isolation cavity 508 is disposed between an outer wall of the annular air duct 505 and the outer casing 507. Through the thermal insulation of isolation chamber 508, the heat transfer through outer shell 507 can be reduced, thereby facilitating a reduction in energy consumption. In addition, in practical use, the heating device 5 does not continuously heat the strip-shaped profiles 90 all the time, and only heats the gap between the two previous and next strip-shaped profiles 90 when the gap enters the channel 504, so as to reduce energy consumption; therefore, after the primary heating is completed, the high-temperature hot air still exists in the annular air duct 505, and the high-temperature hot air can be kept warm through the isolation effect of the isolation cavity 508, so that the high-temperature hot air can be immediately blown out when the heating device 5 is started and heated next time, the phenomenon that the cold air is blown out due to the fact that the air flow cannot be heated in time in the starting process is avoided, namely, the instantaneity of heating can be improved, and the production efficiency is favorably improved.

In this embodiment, referring to fig. 5, the channel 504 is a rectangular channel, the annular air duct 505 is a "return" shaped air duct (including four parts, i.e., an upper part, a lower part, a left part and a right part), and the upper part, the lower part, the left part and the right part of the annular air duct 505 are respectively provided with at least one heater 503. In practical application, most of the bar-shaped profiles 90 have a rectangular or rectangular-like cross section, and need to be filmed on four sides, and the rectangular channel 504 and the circular air duct 505 shaped like a Chinese character hui are provided to facilitate uniform heating of the films on four sides. In fact, the shapes of the channel 504 and the annular air duct 505 are not limited thereto, for example, the channel 504 may be circular, elliptical, other polygonal, etc., and the annular air duct 505 may be corresponding circular, elliptical, other polygonal, etc.

In some examples, as shown in fig. 4 and 5, the channel 504 and the annular air duct 505 are separated by a first air-equalizing plate 509, and the first air outlet 506 is an air-equalizing hole of the first air-equalizing plate 509.

In some embodiments, see fig. 4 and 5, the blowing mechanism 502 includes a blowing cylinder 510 having one end communicating with the annular air duct 505, a fan blade 511 disposed in the blowing cylinder 510, and a fan motor 512 for driving the fan blade 511 to rotate. In operation, the fan motor 512 drives the fan blades 511 to rotate, so as to draw outside air into the blowing cylinder 510, thereby forming a high-pressure air flow to the annular air duct 505. The second air-equalizing plate 513 (a plurality of air-equalizing holes are uniformly formed in the second air-equalizing plate 513) may be disposed between the air-blowing cylinder 510 and the annular air duct 505, so that the air flow uniformly enters the annular air duct 505, the uniformity of the air flow in the annular air duct 505 is improved, and the uniformity of the film heating on each side surface of the strip-shaped material 90 is further improved.

In some embodiments, as shown in fig. 4 and 5, one blowing mechanism 502 is provided and is disposed on the top of the heating box 501, which is beneficial to improve the convenience of assembly. The top of the blowing cylinder 510 is closed, an air inlet 514 is formed in the upper portion of the circumferential surface of the blowing cylinder 510, a bearing seat 515 is formed in the top of the blowing cylinder 510, a rotating shaft of the fan blade 511 penetrates through the bearing seat 515, and the rotating shaft is connected with an output shaft of the fan motor 512 through a flexible transmission mechanism (such as a belt transmission mechanism, a synchronous belt transmission mechanism, a chain transmission mechanism and the like). In addition, a motor mounting bracket 516 is provided on the top of the heating compartment 501, and the fan motor 512 is provided on the motor mounting bracket 516.

In the present embodiment, the heater 503 is a resistance heater, but is not limited thereto. In the embodiment shown in fig. 5, the heater 503 is provided only in the annular air duct 505, but in actuality, the heater 503 may be provided only in the blower cylinder 510, or may be provided in both the annular air duct 505 and the blower cylinder 510.

In addition, the blowing mechanism 502 further includes an adjusting device 517 disposed on the top of the heating box 501, and the adjusting device 517 is electrically connected to the fan motor 512 and the heater 503, and is used for adjusting the rotation speed of the fan motor 512 and the power of the heater 503 to achieve adjustment of the speed and temperature of the hot air.

In other embodiments, see fig. 6-8, the heating device 5 comprises at least one hot air module 518; the hot air module 518 includes an air blowing box 519 having an inner cavity, and a hot air blower 520 (mainly provided with a fan and a heating wire therein, and blowing an air flow by the fan, which is heated by the heating wire into hot air) for blowing hot air to the inner cavity of the air blowing box 519; one side of the blowing box 519 facing the bar-shaped section bar 90 is uniformly provided with a plurality of second air outlet holes 521. In operation, the hot air blower 520 delivers hot air into the blower box 519, and the hot air is ejected from the second air outlet 521 to form hot air to heat the film. Wherein, the quantity and the orientation of hot-blast module 518 can be set up according to the side quantity and the position of bar section bar 90 actual need pad pasting, and the film of every side is responsible for the heating by a hot-blast module 518 that corresponds, can guarantee more easily that the heating of each film is even, and if need paste different films on the different sides when, still can adjust the hot-blast speed and the temperature of each hot-blast module 518 independently to guarantee that different films can be broken reliably simultaneously.

For example, in fig. 6 and 7, four hot air modules 518 are provided, and one sides of the four hot air modules 518 provided with the second air outlet 521 jointly enclose a square passage 522, and the passage 522 is used for allowing the strip-shaped section bar 90 to pass through. For rectangular and rectangular-like strip-shaped profiles 90, it is generally necessary to coat four sides thereof, and when such strip-shaped profiles 90 pass through the aisle 522, it is ensured that four films thereof are simultaneously heated.

Preferably, referring to fig. 8, the blowing box 519 includes a connection portion 523 connected to a blowing port of the hot air blower 520, and an expansion portion 524 gradually expanding in a direction away from the connection portion 523; the second air outlet 521 is disposed on the wall plate facing the air blowing port (the air blowing port of the hot air blower 520). Because the size of the blowing opening of the hot air blower 520 is small, if the strip-shaped section bar 90 is directly blown to be difficult to completely cover the width range of the film, the concentrated air flow can be diffused into the air flow with larger coverage area through the expansion part 524, and the whole width range of the film can be uniformly covered by hot air through the air equalizing effect of the second air outlet 521.

In some preferred embodiments, two flow dividing plates 525 are disposed in the expanding portion 524, the two flow dividing plates 525 divide the expanding portion 524 into three flow passages, and divide the air flow fed from the air blowing port (the air blowing port of the hot air blower 520) into three parts to flow from the three flow passages, respectively (as indicated by three broken-line arrows in fig. 8), so as to further improve the uniformity of the blown hot air.

As shown in fig. 8, the flow distribution plate 525 includes a front plate portion 526, a middle plate portion 527, and a rear plate portion 528, which are connected in sequence; the front plate parts 526 of the two flow distribution plates 525 are parallel to each other and parallel to the air outlet direction of the air outlet (the air outlet of the hot air blower 520), and the air outlet is divided into three parts by the projection of the two front plate parts 526 on the cross section of the air outlet; the rear plate parts 528 of the two flow distribution plates 525 are parallel to each other and the air outlet direction of the air blowing box 519, and divide the air outlet area of the air blowing box 519 into three parts.

Wherein, unwinding mechanism 3 and press mold roller 4 press 1: 1, and the specific number and the specific positions are set according to the number and the orientation of the side faces of the strip-shaped section 90 to be filmed;

for example, in some embodiments, as shown in fig. 1 to 3 and 6, four unwinding mechanisms 3 and four lamination rollers 4 are respectively provided, the four films unwound by the four unwinding mechanisms 3 are respectively used for laminating four sides of the bar-shaped profile 90, and the four lamination rollers 4 are respectively used for laminating four films on four sides of the bar-shaped profile 90.

Further, the four film pressing rollers 4 are equally divided into two groups (two in each group), and the two film pressing rollers 4 in the same group are arranged in parallel (for example, one group is arranged oppositely from left to right and the axial direction is vertical, and the other group is arranged oppositely from top to bottom and the axial direction is horizontal), and are respectively arranged on two adjusting sliding seats 7 which can be close to or far away from each other (see fig. 3). During the use, can adjust the position of two sets of squeeze film rollers 4 according to bar section bar 90's actual width and actual height to applicable bar section bar 90 in different models, the suitability is stronger.

The invention also provides a strip-shaped section film pasting method, which comprises the following steps:

A1. two strip-shaped sectional materials are arranged in a close fit manner along the axial direction;

A2. the film is pasted on the surface of the strip-shaped section along the axial direction;

A3. after the film is completely attached to the surface of the previous strip-shaped section and the next strip-shaped section is partially attached to the surface of the previous strip-shaped section, heating the film at the gap between the two strip-shaped sections;

A4. moving the previous strip away from the subsequent strip to cause the film to stretch-break from the gap.

After the film at the gap is heated, the strength of the film at the gap is reduced, and the film is easy to break when being pulled, and when the film is broken by adopting the method, a large gap does not need to be reserved between the front strip-shaped section and the rear strip-shaped section for a cutter to pass through, so that the length of the section of the film extending out of the end part of the strip-shaped section can be ensured to be small as long as the gap between the front strip-shaped section and the rear strip-shaped section is ensured to be small; the length of the section of the film extending out of the end face of the strip-shaped section is favorably reduced, the film does not need to be cut off manually, the production efficiency is high, and the labor consumption is low.

Wherein, the heating time and temperature (referring to the temperature of hot air) are set according to the material and thickness of different films, and the proper heating time and heating temperature can be obtained in advance through experiments.

Wherein, step A4 includes:

keeping the latter bar-shaped section stationary and moving the former bar-shaped section forward, thereby breaking the film from the point-breaking type cut; or,

the former bar profile is moved forward at a faster speed than the latter bar profile, so that the film is stretch-broken from the point-break cut.

In some embodiments, the strip-shaped profile film pasting method can be realized based on the aforementioned strip-shaped profile film pasting device.

In the description herein, references to the description of the terms "one embodiment," "certain embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.

Claims (10)

1. The utility model provides a bar section bar pad pasting device which characterized in that includes:

a machine base (1);

the first conveying mechanism (2) is arranged at the top of the machine base (1) and is used for conveying the strip-shaped section (90);

the unwinding mechanism (3) is used for unwinding the film;

at least one film pressing roller (4) for pressing the film against the side of the strip-shaped profile (90);

the heating device (5) is used for heating the film at the gap between the two strip-shaped profiles (90) which are arranged in the axial direction in a front-and-back manner when the gap between the two strip-shaped profiles (90) which are arranged in the axial direction in the front-and-back manner moves to the heating device (5); the heating device (5) is arranged at the downstream of the film pressing roller (4);

and the second conveying mechanism (6) is arranged at the downstream of the heating device (5) and is used for being matched with the first conveying mechanism (2) to stretch and break the film from the gap.

2. Strip-shaped profile film application apparatus according to claim 1, wherein the heating device (5) comprises a heating box (501), a blowing mechanism (502) and a plurality of heaters (503); the heating box (501) comprises a channel (504) for the strip-shaped profile (90) to pass through, and an annular air duct (505) arranged around the channel (504); a plurality of first air outlet holes (506) communicated with the annular air duct (505) are uniformly formed in the side wall of the channel (504); the blowing mechanism (502) is used for blowing air to the annular air duct (505); the heater (503) is arranged in the blowing mechanism (502) and/or the annular air duct (505).

3. Strip-shaped profile film sticking device according to claim 2, wherein the heating box (501) further comprises an outer shell (507), and an isolation cavity (508) is arranged between the outer wall of the annular air duct (505) and the outer shell (507).

4. Strip-shaped profile film pasting device according to claim 2, characterized in that the channel (504) is a rectangular channel, the annular air duct (505) is a "return" air duct, and the upper part, the lower part, the left part and the right part of the annular air duct (505) are each provided with at least one heater (503).

5. The strip-shaped profile film laminating device according to claim 2, wherein the blowing mechanism (502) comprises a blowing cylinder (510) with one end communicated with the annular air duct (505), a fan blade (511) arranged in the blowing cylinder (510), and a fan motor (512) for driving the fan blade (511) to rotate.

6. Strip-shaped profile film application apparatus according to claim 1, characterized in that the heating device (5) comprises at least one hot air module (518); the hot air module (518) comprises an air blowing box (519) with an inner cavity, and a hot air blower (520) used for blowing hot air to the inner cavity of the air blowing box (519); and one side of the air blowing box (519) facing the strip-shaped section bar (90) is uniformly provided with a plurality of second air outlet holes (521).

7. The strip-shaped profile laminating apparatus according to claim 6, wherein the blowing box (519) comprises a connecting portion (523) connected to a blowing port of the hot-air blower (520), and an expanding portion (524) gradually expanding in a direction away from the connecting portion (523); the second air outlet (521) is arranged on the wall plate opposite to the air blowing opening.

8. The strip-shaped profile filming apparatus of claim 7, wherein two flow dividing plates (525) are provided in the expanding portion (524), the two flow dividing plates (525) dividing the expanding portion (524) into three flow passages, and dividing the air flow fed from the air blowing port into three portions to flow from the three flow passages, respectively.

9. Strip-shaped profile film pasting device according to claim 6, wherein there are four hot air modules (518), and a square passage (522) is defined by the sides of the four hot air modules (518) provided with the second air outlet holes (521), and the passage (522) is used for the strip-shaped profile (90) to pass through.

10. A method for sticking a film on a strip-shaped section is characterized by comprising the following steps:

two strip-shaped sectional materials are arranged in a close fit manner along the axial direction;

the film is pasted on the surface of the strip-shaped section along the axial direction;

after the film is completely attached to the surface of the previous strip-shaped section and the next strip-shaped section is partially attached to the surface of the previous strip-shaped section, heating the film at the gap between the two strip-shaped sections;

moving the previous strip away from the subsequent strip to cause the film to stretch-break from the gap.

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