Window pasting heat sealing device of paper container

Abstract

The utility model relates to a window patching machine, in particular to a window patching heat sealing device of a paper container, which comprises a membrane supply station and a sealing station, the membrane supply station is provided with a membrane supply mechanism, the sealing station is provided with a sealing mechanism, a heating assembly and a paper feeding mechanism, the sealing mechanism comprises a rotating membrane feeding compression roller, and the membrane feeding compression roller is provided with a membrane feeding mechanism. The membrane feeding compression roller is connected with the membrane supply station and the sealing station, the membrane feeding compression roller is provided with a membrane suction hole and an air path, the air path is connected with the membrane suction hole and an air source, the heating assembly is used for heating a layer which is not resistant to high temperature to enable materials to have the bonding capacity, and the paper feeding mechanism forms a paper feeding path. The heating plate is arranged on the membrane conveying compression roller and can heat a membrane in the membrane conveying process to enable the membrane to have the bonding capacity; the ventilation disc and the carbon brush are fixedly arranged, so that an air source and a power source do not need to be arranged on the diaphragm feeding compression roller, and the diaphragm feeding compression roller is small in load and small in size.

Description

TECHNICAL FIELD

[0001] The utility model relates to a window pasting machine, especially relates to a window pasting heat sealing device of paper container. BACKGROUND

[0002] The existing window pasting machine adopts the mode of sticking to make the diaphragm adhere to the window part of the paper container, but the glue is toxic and not environmental protection, for the paper container (such as meal box) with environmental protection and green requirement, it needs to optimize the bonding means to comply with the green environmental protection trend, and the heat sealing is used to replace the sticking to realize the window pasting process of the paper container. SUMMARY

[0003] In view of the technical problems in the background art, the utility model aims at providing a window pasting heat sealing device of paper container, which uses a diaphragm feeding roller to convey the diaphragm and cooperates with a heating assembly to heat seal the diaphragm and paper.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme: the window pasting heat sealing device of paper container, including diaphragm supply station and sealing station, the diaphragm supply station is equipped with diaphragm supply mechanism, the sealing station is equipped with sealing mechanism, heating assembly and paper feeding mechanism, the sealing mechanism includes rotating diaphragm feeding roller, the diaphragm feeding roller connects the diaphragm supply station and the sealing station, the diaphragm feeding roller is equipped with diaphragm suction hole and gas circuit, the gas circuit connects the diaphragm suction hole and gas source, the heating assembly is used to heat the high-temperature-resistant layer to make the material have the bonding capacity, and the paper feeding mechanism forms a paper feeding path.

[0005] In this scheme, the diaphragm can be designed in double layers, the high-temperature-resistant layer is adsorbed by the diaphragm suction hole, and the non-high-temperature-resistant layer is used to melt and generate the bonding capacity, and the paper can be coated to form the non-high-temperature-resistant layer, and the diaphragm feeding roller can convey the diaphragm and press the diaphragm and paper during sealing.

[0006] Preferably, the heating assembly includes a heating plate, the heating plate is arranged on the diaphragm feeding roller, the heating plate has a curved adsorption surface, and the adsorption surface is distributed with the diaphragm suction hole.

[0007] In this scheme, the heating plate is arranged on the diaphragm feeding roller, and the diaphragm is heated during conveying.

[0008] Preferably, the heating plate is connected with an electric brush, the electric brush is in sliding contact with a carbon brush, the carbon brush is installed on a carbon brush holder, and the carbon brush holder is fixedly arranged.

[0009] In this scheme, the electric brush moves with the heating plate, and the carbon brush is fixed, so that the heating plate does not have the problem of winding when rotating with the diaphragm feeding roller, and it is not necessary to arrange an independent power supply to rotate with the diaphragm feeding roller, the overall load of the diaphragm feeding roller is small, and the volume is small.

[0010] Preferably, the sealing mechanism further comprises a rotating conveying roller cooperating with the film feeding roller, the heating assembly comprises a heating plate arranged on the film feeding roller or the conveying roller, the paper feeding mechanism is used for conveying the film-coated paper, and the paper feeding mechanism comprises a front conveying assembly and a rear conveying assembly, the front conveying assembly comprises a paper supporting plate and a push block, the push block is arranged on a transmission chain at intervals, and the rear conveying assembly comprises a conveying belt.

[0011] In this scheme, the push block pushes the paper supported on the paper supporting plate to be heat sealed and formed with the film, the conveying roller cooperates with the film feeding roller to press and convey the heat sealed and formed paper to the conveying belt, and the conveying belt conveys the paper rearward, and the film layer of the paper is melted to improve the adhesion effect.

[0012] Preferably, the heating assembly further comprises an ultrasonic welding head, and the sealing mechanism further comprises a workbench, the workbench is provided with an opening for exposing the ultrasonic welding head, and the ultrasonic welding head cooperates with the film feeding roller.

[0013] In this scheme, the ultrasonic welding head heats the high-temperature-resistant layer of any material of the film and the paper to make it have adhesion ability.

[0014] Preferably, the film feeding roller is mounted on a rotating shaft, the rotating shaft is arranged between wall plates, an air passage disc is arranged on the rotating shaft, the air passage disc is fixedly arranged, the film feeding mechanism is arranged between the wall plates, and the wall plates are adjusted by moving left and right.

[0015] In this scheme, the fixed arrangement of the air passage disc makes the air source and the corresponding air passage pipe not need to rotate with the film feeding roller, the overall load of the film feeding roller is small, and the volume is small; the moving wall plates drive the film feeding mechanism and the film feeding roller to adjust left and right, and different specifications of paper are adapted to window pasting.

[0016] Preferably, the air passage disc is provided with an arc-shaped air passage section in the circumferential direction on the side surface, the film feeding roller is provided with an air passage hole on the side surface, the air passage hole and the film suction hole form the air path, the air passage hole and the arc-shaped air passage section are intermittently communicated, and the arc-shaped air passage section is communicated with the air source.

[0017] In this scheme, the air passage hole and the arc-shaped air passage section are communicated to make the film feeding roller adsorb the film, the air passage hole and the arc-shaped air passage section are disconnected to make the film feeding roller no longer have adsorption force on the film, and the heat sealed and formed paper is not affected to be conveyed rearward.

[0018] Preferably, the film supplying mechanism comprises a cutting assembly and a film feeding assembly, the film supplying mechanism is used for providing a double-layer film piece with a high-temperature resistant layer and a non-high-temperature resistant layer, the film absorbing hole is used for absorbing the high-temperature resistant layer of the double-layer film piece, the film feeding assembly comprises an upper film feeding roller and a lower film feeding roller, the upper film feeding roller cooperates with the lower film feeding roller, the cutting assembly comprises a cutting plate and a cutting roller, the cutting roller is provided with an upper cutter extending along the axial direction of the cutting roller, the cutting plate is provided with a lower cutter corresponding to the upper cutter, the cutting assembly is located between the film feeding assembly and the film piece pressing roller, and the material supporting surface of the cutting plate is arranged in an inclined manner.

[0019] In this scheme, the upper film feeding roller and the lower film feeding roller feed the film strip end to the cutting assembly, the upper cutter and the lower cutter cooperate to cut the film strip end to form a film piece and a new film strip end, the material supporting surface is arranged in an inclined manner so that the film strip end falls to the surface of the film piece pressing roller, and the double-layer film piece is designed so that the non-high-temperature resistant layer melts to generate adhesion, and the high-temperature resistant layer is used for stable absorption of the film absorbing hole.

[0020] Preferably, the film supplying mechanism is provided with a film pressing piece at the discharging end, the heating plate protrudes relative to the film piece pressing roller, and the heating plate further has a guide surface connecting the surface of the film piece pressing roller and the absorbing surface.

[0021] In this scheme, the film strip end is in contact with the absorbing surface through the guide surface and is pulled by the absorbing surface, and the film pressing piece brushes the film strip flat with the absorbing surface during the rotation of the film piece pressing roller.

[0022] Preferably, the surface of the film piece pressing roller is provided with first mounting holes, the mounting surface of the heating plate is provided with second mounting holes in correspondence, the number of the first mounting holes is not less than the number of the second mounting holes, and the first mounting holes and the second mounting holes are in communication with the gas channel.

[0023] In this scheme, the heating plate can be replaced according to the paper size, and the first mounting holes and the second mounting holes can be used for air supply and fastener connection.

[0024] The heating plate is arranged on the film piece pressing roller, the film piece can be heated to have adhesion during the film piece conveying process, the air supply and the power supply do not need to be arranged on the film piece pressing roller due to the fixed arrangement of the air supply disc and the carbon brush, and the load of the film piece pressing roller is small, and the volume is small. Therefore, the utility model has substantial characteristics and progress compared with the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0025] The related details and working principles of the embodiments of the utility model will be described below in combination with the drawings.

[0026] Figure 1 It is a top view of the utility model.

[0027] Figure 2 It is the three-dimensional structure schematic view of the front conveying assembly in the utility model.

[0028] Figure 3 It is the three-dimensional structure schematic view of the rear conveying assembly in the utility model.

[0029] Figure 4 It is the three-dimensional structure schematic view of the film supplying mechanism and sealing mechanism in the utility model.

[0030] Figure 5 It is the three-dimensional structure schematic view of the heating plate in the utility model.

[0031] Figure 6 It is the three-dimensional structure schematic view of the film supplying mechanism in the utility model. Figure 5 It is the three-dimensional structure schematic view of the film supplying mechanism in the utility model.

[0032] Figure 7 It is the three-dimensional structure schematic view of the film supplying mechanism in the utility model.

[0033] Figure 8 It is the three-dimensional structure schematic view of the film supplying mechanism in the utility model.

[0034] Figure 9 It is the three-dimensional structure schematic view of the film supplying mechanism in the utility model.

[0035] In the drawing: 1, film supplying mechanism; 2, sealing mechanism; 3, film feeding roller; 4, film suction hole; 5, air path; 6, heating assembly; 7, paper feeding mechanism; 8, heating plate; 9, suction surface; 10, conveying roller; 11, front conveying assembly; 12, rear conveying assembly; 13, paper supporting plate; 14, push block; 15, conveying belt; 16, rotating shaft; 17, wallboard; 18, air vent disc; 19, arc-shaped air vent section; 20, air vent hole; 21, cutting assembly; 22, film feeding assembly; 23, upper film feeding roller; 24, lower film feeding roller; 25, cutting plate; 26, cutting roller; 27, upper cutting knife; 28, lower cutting knife; 30, guide surface; 31, first mounting hole; 32, second mounting hole; 33, transmission chain. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model; obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments, and all other embodiments obtained by those skilled in the art without creative labor based on the embodiments in the utility model belong to the protection scope of the utility model.

[0037] In the description of the present application, it should be understood that the terms "upper", "lower", and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0038] In the description of the present application, the terms "first", "second", and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0039] Referring to the accompanying Figures 1-9 The paper container window sealing device in the embodiment of the present embodiment comprises a film supply station and a sealing station, the film supply station is provided with a film supply mechanism 1, the sealing station is provided with a sealing mechanism 2, a heating assembly 6 and a paper feeding mechanism 7, the sealing mechanism 2 comprises a rotating film feeding roller 3, the film feeding roller 3 connects the film supply station and the sealing station, the film feeding roller 3 is provided with a film suction hole 4 and an air path 5, the air path 5 connects the film suction hole 4 and an air source, the heating assembly 6 is used to heat the high-temperature-resistant layer to make the material have adhesive ability, and the paper feeding mechanism 7 forms a paper feeding path.

[0040] In the present embodiment, the paper feeding mechanism 7 transports the paper with a window to the sealing station, the film feeding roller 3 takes the film from the film supply station and transports it to the sealing station, the film is rectangular, a conveying roller 10 can be arranged to cooperate with the film feeding roller 3, or a workbench can be arranged to cooperate with the film feeding roller 3, and the heating assembly 6 melts the high-temperature-resistant layer of any material to generate adhesive ability, wherein the film can be designed in double layers, the high-temperature-resistant layer is adsorbed by the film suction hole 4, and the high-temperature-resistant layer is used to melt to generate adhesive ability, the paper can also be coated to form a high-temperature-resistant layer, and the air source forms negative pressure to adsorb the film through the air path 5 at the film suction hole 4.

[0041] Referring to the accompanying Figures 1-5The heating assembly 6 comprises a heating plate 8 arranged on the film feeding piece pressing roller 3, the heating plate 8 has a curved adsorption surface 9, the adsorption surface 9 is distributed with the film piece adsorption holes 4, the heating plate 8 is connected with an electric brush, the electric brush is in sliding contact with a carbon brush, the carbon brush is installed on a carbon brush holder, the carbon brush holder is fixedly arranged, the sealing mechanism 2 further comprises a rotating conveying roller 10, the conveying roller 10 is matched with the film feeding piece pressing roller 3, the heating assembly 6 comprises a heating plate 8 arranged on the film feeding piece pressing roller 3 or the conveying roller 10, the paper feeding mechanism 7 is used for conveying the film-coated paper, the paper feeding mechanism 7 comprises a front conveying assembly 11 and a rear conveying assembly 12, the front conveying assembly 11 comprises a paper supporting plate 13 and a push block 14, the push block 14 is arranged on a transmission chain in a spaced manner, the rear conveying assembly 12 comprises a conveying belt 15, the sealing mechanism 2 connects the front conveying assembly 11 and the rear conveying assembly 12.

[0042] In the embodiment, the push block 14 conveys the windowed paper supported on the paper supporting plate 13 to the sealing position, the film feeding piece pressing roller 3 adsorbs the film piece through the film piece adsorption holes 4, the heating plate 8 preheats the film piece or heats the non-temperature-resistant layer of the film piece and the paper during the pressing process, the non-temperature-resistant layer is melted to make the material have the adhesion ability, then the conveying roller 10 cooperates with the film feeding piece pressing roller 3 to place the paper after windowing on the conveying belt 15, wherein the electric brush moves with the film feeding piece pressing roller 3, the carbon brush is fixed, the carbon brush holder is installed on the wall plate 17, so that the power supply does not need to be installed on the film feeding piece pressing roller 3, and the intermittent contact between the electric brush and the carbon brush can be arranged, so that the heating plate 8 is powered off when moving from the sealing position to the film feeding position; the electric brush is a rotor, the carbon brush is a stator, the rotor is connected with terminal electrical equipment, the stator is connected with the power supply, and the rotor can also be a current collector ring, a rotating electrical joint or the like; the paper feeding mechanism 7 is supplied with materials from a material bin; the heating plate 8 and the film feeding piece pressing roller 3 can be designed integrally, the electric brush is connected on the film feeding piece pressing roller 3 for overall heating, or can be designed separately; increasing the number of heating plates 8 around the film feeding piece pressing roller 3 can adapt to high-speed production, and the heating assembly 6 can be heated only around the film piece by arranging the heat insulation cotton with holes on the adsorption surface 9, so that the heating temperature can be increased and the melting of the non-temperature-resistant layer can be accelerated to adapt to high-speed production.

[0043] In other alternative embodiments, a workbench can be used instead of the conveying roller 10 to cooperate with the film feeding piece pressing roller 3, and the paper is directly pushed by the push block 14, but the push block 14 and the film feeding piece pressing roller 3 should be avoided from interfering with each other.

[0044] In addition, the heating assembly 6 further comprises an ultrasonic welding head, and the sealing mechanism 2 further comprises a workbench, the workbench is provided with an opening for exposing the ultrasonic welding head, and the ultrasonic welding head cooperates with the film feeding piece pressing roller 3.

[0045] In this embodiment, the ultrasonic welding head heats the non-high-temperature-resistant layer of the material to make the material have adhesion ability, and the paper can be conveyed through the sealing station by the push block 14.

[0046] Referring to the drawings Figures 4-8 The film feeding piece pressing roller 3 is installed on the rotating shaft 16, the rotating shaft 16 is rotationally arranged between the wall plates 17, the rotating shaft 16 is sleeved with the air passage disc 18, the air passage disc 18 is fixedly arranged, the film feeding piece mechanism 1 is arranged between the wall plates 17, the wall plates 17 are adjustably arranged by moving left and right, the air passage disc 18 is provided with the arc-shaped air passage section 19 on the side in the circumferential direction, the film feeding piece pressing roller 3 is provided with the air passage hole 20 on the side, the air passage hole 20 and the film suction piece hole 4 form the air path 5, the air passage hole 20 and the arc-shaped air passage section 19 are intermittently communicated, the arc-shaped air passage section 19 is communicated with the air source, the film feeding piece pressing roller 3 is distributed with the first installation hole 31 on the surface, the mounting surface of the heating plate 8 is correspondingly distributed with the second installation hole, the number of the first installation hole 31 is not less than the number of the second installation hole, and the first installation hole 31 and the second installation hole are both communicated with the air path 5.

[0047] In this embodiment, when the film feeding piece pressing roller 3 feeds the film, the air passage hole 20 is communicated with the arc-shaped air passage section 19, the film suction piece hole 4 generates negative pressure to adsorb the film, when the film feeding piece pressing roller 3 takes the film, the air passage hole 20 is not communicated with the arc-shaped air passage section 19, so that the film suction piece hole 4 does not generate adsorption force to the film, thereby avoiding affecting the backward conveying of the paper after being pasted on the window, wherein the heating plate 8 arranged on the conveying roller 10 can also adopt this air breaking mode; the fastener passes through the second installation hole and the first installation hole 31 in sequence to fasten and connect the heating plate 8 and the film feeding piece pressing roller 3, the heating plate 8 with different lengths corresponds to different numbers of the first installation hole 31, which is suitable for different specifications of the film, the installation hole can be used for installation and air passage, and the function is flexible; the mounting shaft is arranged between the wall plates 17 and connected with the air passage disc 18 through the fixing strip.

[0048] In other alternative embodiments, the air breaking mode can also not be designed; the material scraping knife can be designed to scrape the paper after being pasted on the window from the film feeding piece pressing roller 3; the mounting groove can also be arranged on the surface of the film feeding piece pressing roller 3 for installing the heating plate 8.

[0049] Referring to the drawings Figure 5 , 9The film supplying mechanism 1 includes a cutting assembly 21 and a film feeding assembly 22, and is used to provide a double-layer film with a high-temperature-resistant layer and a non-high-temperature-resistant layer. The film absorbing hole 4 is used to absorb the high-temperature-resistant layer of the double-layer film. The film feeding assembly 22 includes an upper film feeding roller 23 and a lower film feeding roller 24. The upper film feeding roller 23 cooperates with the lower film feeding roller 24. The cutting assembly 21 includes a cutting plate 25 and a cutting roller 26. The cutting roller 26 is provided with an upper cutting knife 27 extending along the axial direction of the cutting roller 26. The cutting plate 25 is provided with a lower cutting knife 28 corresponding to the upper cutting knife 27. The cutting assembly 21 is located between the film feeding assembly 22 and the film feeding pressure roller 3. The material supporting surface of the cutting plate 25 is arranged in an inclined manner. The film supplying mechanism 1 is provided with a film pressing piece at the discharging end. The heating plate 8 protrudes relative to the film feeding pressure roller 3. The heating plate 8 further has a guide surface 30 connecting the surface of the film feeding pressure roller 3 and the absorbing surface 9.

[0050] In the embodiment, the film pressing piece is a brush. The upper film feeding roller 23 and the lower film feeding roller 24 cooperate to convey the film strip to the film supplying position. The upper cutting knife 27 and the lower cutting knife 28 cooperate to cut the end of the film strip to form a film piece and a new end. The material supporting surface is arranged in an inclined manner so that the end of the film strip is arranged on the surface of the film feeding pressure roller 3. The guide surface 30 guides the end of the film strip from the surface of the film feeding pressure roller 3 to the absorbing surface 9. The film absorbing hole 4 is in contact with the film strip to absorb the film strip. The film pressing piece is in contact with the absorbing surface 9 to brush the film strip on the absorbing surface 9. The absorbing surface 9 absorbs the film strip to tension the film strip, which helps to accurately cut the film strip. The film supplying mechanism 1 further includes a film roll to supply the film. The heating plate 8 protrudes relative to the film feeding pressure roller 3. The bristles of the brush can not be in contact with the film feeding pressure roller 3. The bristles are in contact with the film piece absorbed by the absorbing surface after being deformed by the guide surface 30 to brush the film piece to be as close to the absorbing surface as possible, thereby ensuring the accuracy of sealing.

[0051] In other alternative embodiments, the upper cutting knife 27 arranged in a lifting manner can be used for cutting. The film piece can be pre-cut and placed in the material bin. The film piece is sucked and delivered to the film feeding pressure roller 3 by the film taking suction nozzle. The film pressing piece is a pressure roller arranged above the film feeding pressure roller 3. The film piece is attached to the surface of the film feeding pressure roller 3 due to the pressure of the pressure roller. The film piece moves with the film feeding pressure roller 3 due to the suction force.

[0052] The above describes the preferred embodiments of the present application. It should be noted that the protection scope of the present application is not limited to this. For those skilled in the art, many improvements, decorations, or equivalent replacements can be made without departing from the technical range disclosed in the present application, which is also regarded as the protection scope of the present application.

Claims

1. A heat-sealing device for attaching windows to paper containers, characterized in that: It includes a film supply station and a sealing station. The film supply station is equipped with a film supply mechanism (1), and the sealing station is equipped with... The sealing mechanism (2) includes a rotating film feeding roller (3), which connects the film supply station and the sealing station. The film feeding roller (3) is provided with a film suction hole (4) and an air passage (5), which connects the film suction hole (4) and an air source. Heating component (6), which is used to heat the heat-sensitive layer to enable the material to have adhesive properties; The paper feeding mechanism (7) forms the paper feeding path.

2. The heat-sealing device for window sealing of a paper container as described in claim 1, characterized in that: The heating assembly (6) includes a heating plate (8) which is disposed on the film feeding roller (3). The heating plate (8) has a curved adsorption surface (9) on which the film adsorption holes (4) are distributed.

3. The heat-sealing device for window sealing of a paper container as described in claim 2, characterized in that: The heating plate (8) is connected to an electric brush, which slides in contact with a carbon brush. The carbon brush is mounted on a carbon brush holder, which is fixedly installed.

4. The heat-sealing device for window sealing of a paper container as described in claim 1, characterized in that: The sealing mechanism (2) further includes a rotating conveyor roller (10), which cooperates with the film feeding pressure roller (3). The heating component (6) includes a heating plate (8), which is disposed on the film feeding pressure roller (3) or the conveyor roller (10). The paper feeding mechanism (7) is used to convey coated paper. The paper feeding mechanism (7) includes a front conveyor component (11) and a rear conveyor component (12). The front conveyor component (11) includes a paper support plate (13) and a pusher block (14). The pusher block (14) is spaced apart on the transmission chain. The rear conveyor component (12) includes a conveyor belt (15). The sealing mechanism (2) connects the front conveyor component (11) and the rear conveyor component (12).

5. The heat-sealing device for window sealing of a paper container as described in claim 1, characterized in that: The heating assembly (6) also includes an ultrasonic welding head, and the sealing mechanism (2) also includes a worktable with an opening for the ultrasonic welding head to be exposed. The ultrasonic welding head cooperates with the film feeding roller (3).

6. The heat-sealing device for window sealing of a paper container as described in claim 1, characterized in that: The film feeding roller (3) is mounted on the rotating shaft (16), which is rotatably arranged between the wall panels (17). A ventilation disc (18) is sleeved on the rotating shaft (16), which is fixedly arranged. The film feeding mechanism (1) is arranged between the wall panels (17), and the wall panels (17) are adjustable to move left and right.

7. The heat-sealing device for window sealing of a paper container as described in claim 6, characterized in that: The ventilation plate (18) has an arc-shaped ventilation section (19) on its side along the circumference. The film feeding roller (3) has a ventilation hole (20) on its side. The ventilation hole (20) and the film suction hole (4) form the air passage (5). The ventilation hole (20) and the arc-shaped ventilation section (19) are intermittently connected. The arc-shaped ventilation section (19) is connected to the air source.

8. The heat-sealing device for window sealing of a paper container as described in claim 1, characterized in that: The film feeding mechanism (1) includes a cutting assembly (21) and a film feeding assembly (22). The film feeding mechanism (1) is used to provide a double-layer film with a high-temperature resistant layer and a non-high-temperature resistant layer. The film suction hole (4) is used to adsorb the high-temperature resistant layer of the double-layer film. The film feeding assembly (22) includes an upper film feeding roller (23) and a lower film feeding roller (24). The upper film feeding roller (23) cooperates with the lower film feeding roller (24). The cutting assembly (21) includes a cutting plate (25) and a cutting roller (26). The cutting roller (26) is provided with an upper cutter (27). The upper cutter (27) extends along the axial direction of the cutting roller (26). The cutting plate (25) is provided with a lower cutter (28) corresponding to the upper cutter (27). The cutting assembly (21) is located between the film feeding assembly (22) and the film feeding pressure roller (3). The material support surface of the cutting plate (25) is inclined.

9. The heat-sealing device for window sealing of a paper container as described in claim 2, characterized in that: The discharge end of the film feeding mechanism (1) is equipped with a film pressing piece. The heating plate (8) protrudes relative to the film feeding roller (3). The heating plate (8) also has a guide surface (30), which connects the surface of the film feeding roller (3) and the adsorption surface (9).

10. The heat-sealing device for window sealing of a paper container as described in claim 2, characterized in that: The surface of the film feeding roller (3) is provided with first mounting holes (31), and the mounting surface of the heating plate (8) is provided with second mounting holes. The number of first mounting holes (31) is not less than the number of second mounting holes. Both the first mounting holes (31) and the second mounting holes are connected to the air passage (5).

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