Color printing film imbedding device for in-mold labeling and use method of color printing film imbedding device
By using movable air cylinders and airbags in the in-membrane labeling device and using exhaust pipes and piston systems, the membrane displacement problem caused by negative pressure is solved, the finished product quality is improved and operation is simplified.
Patent Information
- Application Number
- CN202411410770.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-10
- Publication Date
- 2025-01-03
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
After the traditional in-film labeling and placement device puts the film into the mold, the film temperature is easily affected by negative pressure and affects the quality of the finished product.
A color printing film insertion device for labeling in-mold is designed, which moves through multiple positions of the air cylinder and the air bag, and fills air into the mold through the exhaust pipe to avoid negative pressure, and at the same time, the air bag temperature is reduced by using the piston and the air separation box. Ensure stable insertion of the membrane and high-quality finished products.
The flexible removal and placement of the membrane is achieved, the membrane displacement caused by negative pressure is avoided, the quality of the finished product is improved, and the use process is simplified by reducing the airbag temperature.
Smart Images
Figure CN119238840A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of in-mold labeling, and in particular relates to a color printing film inserting device for in-mold labeling and a use method thereof. Background Art
[0002] In-mold labeling is a new label packaging form that is different from traditional direct silk-screen printing, heat shrink labels, and self-adhesive labels. In-mold labeling is mainly used for blow molding and injection molding products made of materials such as PP, PE, and PET. That is, before blow molding or injection molding, the printed in-mold label is placed in the blow molding or injection molding cavity. When the mold is closed for blowing or injection, the special adhesive on the in-mold label is melted by the high temperature and high pressure in the mold and is integrated with the bottle body or the surface of the injection molded part.
[0003] When performing in-film labeling, an inserting device is required to place the film into the mold. The inserting device is also required when inserting a cylindrical film. When using a traditional inserting device, after the film is placed in the inner cylinder of the mold, it is quickly pulled out, and negative pressure is generated in the mold, which is easy to affect the temperature of the film. Therefore, a color printing film inserting device for in-mold labeling and a method of using the same are proposed. Summary of the invention
[0004] The purpose of the present invention is to provide a color printing film insertion device for in-mold labeling and a method for using the same. The air cylinder and the air bag can be moved to multiple positions, so that the cylindrical film can be taken out and placed into the mold. The use is flexible and air can be added to the mold through the exhaust pipe to avoid the situation where negative pressure is generated in the mold and causes the cylindrical film to be displaced, thereby improving the quality of the finished product. Air pressure is also generated by the movement of the piston and then sprayed to the air bag through the air distribution box, thereby reducing the temperature of the air bag. The use is convenient and solves the existing technical problems.
[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: A color printing film inserting device for in-mold labeling, comprising: A frame, wherein the top of the frame is fixedly connected to a first guide rail, the top of the first guide rail is slidably connected to a slider, the slider is fixedly connected to a second guide rail, the top of the second guide rail is slidably connected to a slide plate, one end of the slide plate is fixedly connected to a mounting seat, a material taking plate is slidably connected between the inner walls on both sides of the mounting seat, one side of the material taking plate is fixedly connected to a mounting box, and one side of the mounting box is provided with a group of material taking components for taking materials; The material picking assembly includes an air cylinder and a main air pipe, the air cylinder is fixedly connected to one side of the mounting box, a group of air bags are fixedly connected to the circumference of the air cylinder, an air distribution pipe is fixedly connected inside the air cylinder, the air distribution pipe is connected to the air bags, a second solenoid valve is installed at one end of the air distribution pipe, a plurality of inclined exhaust pipes are fixedly connected to the circumference of the air cylinder, the main air pipe is fixedly connected to the top of the mounting box and passes through the mounting box, the air distribution pipe is connected to the main air pipe, and by installing a plurality of inclined exhaust pipes on the circumference of the air cylinder, when the air bag and the air cylinder are quickly pulled out, air can be added to the mold through the exhaust pipe, thereby avoiding the situation where negative pressure is generated in the mold and causing displacement of the cylindrical film, thereby improving the quality of the finished product.
[0006] Furthermore, one side of the frame is rotatably connected to two synchronous wheels, a synchronous belt is transmission-connected between the two synchronous wheels, one side of the frame is fixedly connected to a first motor, one end of the output shaft of the first motor is fixed to one of the synchronous wheels, and the bottom of the slider is fixedly connected to a connecting block, which is fixed to the synchronous belt.
[0007] Furthermore, a first rack is fixedly connected to one side of the skateboard, a second motor is fixedly connected to one side of the slider, a first gear is fixedly connected to one end of the output shaft of the second motor, and the first gear is meshed with the first rack.
[0008] Furthermore, a second rack is fixedly connected to one side of the material picking plate, a third motor is fixedly connected to one side of the mounting seat, a second gear is fixedly connected to one end of the output shaft of the third motor, and the second gear is meshed with the second rack. Through the coordinated use of the first motor, the second motor and the third motor, the air cylinder and the airbag can be moved to multiple positions, and the cylindrical film can be taken out and placed into the mold, which is flexible to use.
[0009] Furthermore, the bottom of the slider is fixedly connected to a retaining frame, the bottom of the retaining frame is rotatably connected to a roller, the roller is in contact with the frame, and the stability of the slider is increased by the retaining frame.
[0010] Furthermore, a blowing pipe is fixedly connected to one side of the frame, a piston is slidably connected to the blowing pipe, an extension seat is fixedly connected to the bottom of the retaining frame, one side of the extension seat and one end of the piston are fixedly connected to strong magnets, and the two strong magnets are used together, the circumference of the blowing pipe is fixedly connected to a connected discharge pipe, the other end of the discharge pipe passes through the mounting box and is fixedly connected to an air separator box, the air separator box is fixed to one side of the mounting box, a one-way valve is provided on the circumference of the discharge pipe, and the air separator box is installed on one side of the airbag, so that during the process of taking materials by the airbag, air pressure can be generated by the movement of the piston, and then sprayed to the airbag through the air separator box, thereby reducing the temperature of the airbag for convenient use.
[0011] Furthermore, one end of the blowing pipe is fixedly connected to a mounting frame, a sliding rod is inserted into one side of the mounting frame, one end of the sliding rod is fixedly connected to a sealing plate, the circumferential inner wall of the blowing pipe is fixedly connected to a limiting ring used in conjunction with the sealing plate, and a spring is fixedly connected between the sliding rod and the mounting frame.
[0012] Furthermore, a first solenoid valve is fixedly connected to the top of the main air pipe.
[0013] The present invention also provides a method for using a color printing film inserting device for in-mold labeling, comprising the following steps: S1: When in use, the first motor is started, and the first motor drives one of the synchronous wheels to rotate the rod, and the synchronous belt moves with the cooperation of the other synchronous wheel, and the slider is driven to move by the synchronous belt, and then the upper body is driven to move, so as to realize the horizontal movement of the airbag for taking materials; S2: Start the second motor, the second motor drives the first gear to rotate, the first gear drives the slide plate and the mounting seat to move forward and backward through the first rack, thereby realizing the forward and backward movement of the airbag for taking materials; S3: Start the third motor, the third motor drives the second gear to rotate, the second gear meshes with the second rack, and then drives the material taking plate to move up and down, so as to realize the up and down movement of the air bag for taking the material, and the air cylinder and the air bag are inserted into the prepared cylindrical film through the cooperation of the first motor, the second motor and the third motor, and then compressed air is injected into the air bag through the main air pipe and the branch air pipe, so as to take the cylindrical film, and then move it and insert it into the mold; S4: After the cylindrical film enters the mold, the gas in the airbag is released through the second solenoid valve, and the air cylinder is extracted at the same time. The gas in the airbag is sprayed toward the inner wall of the cylindrical film through the inclined exhaust pipe to prevent the cylindrical film from shifting due to negative pressure during rapid return, thereby improving the quality of the finished product; S5: When the slider moves, it also drives the retaining frame to move. The retaining frame drives the piston to move through a strong magnet. When the piston moves toward one end of the sealing plate, the gas in the limit ring is pushed out and discharged into the gas distribution box through the discharge pipe. Then, the gas is blown toward the airbag through the gas distribution box to reduce the temperature of the airbag. When the piston moves in the opposite direction, there is a negative pressure in the blowing pipe, and the gas pushes open the sealing plate and enters the blowing pipe to replenish air in the blowing pipe.
[0014] The embodiments of the present invention have the following beneficial effects: In the present invention, the first motor, the second motor and the third motor are used in coordination, so that the air cylinder and the air bag can be moved to multiple positions, and the cylindrical film can be taken out and put into the mold, which is flexible to use.
[0015] In the present invention, by installing multiple inclined exhaust pipes on the circumference of the air cylinder, air can be added to the mold through the exhaust pipes when the airbag and the air cylinder are quickly pulled out, thereby avoiding the situation where negative pressure is generated in the mold and causing the cylindrical film to move, thereby improving the quality of the finished product.
[0016] In the present invention, by installing an air separator box on one side of the airbag, air pressure can be generated by the movement of the piston during the process of the airbag taking materials, and then sprayed toward the airbag through the air separator box, thereby reducing the temperature of the airbag and facilitating use.
[0017] In the present invention, the air cylinder and the air bag can be moved to multiple positions, so as to take out and put the cylindrical film into the mold, which is flexible to use. At the same time, air can be added to the mold through the exhaust pipe, so as to avoid the situation where negative pressure is generated in the mold and causes displacement of the cylindrical film, thereby improving the quality of the finished product. Air pressure is also generated by the movement of the piston, and then sprayed to the air bag through the air distribution box, thereby reducing the temperature of the air bag and facilitating use.
[0018] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.
[0020] Figure 1 A schematic diagram of a three-dimensional structure of a first viewing angle according to an embodiment of the present invention; Figure 2 A schematic diagram of a second viewing angle three-dimensional structure of an embodiment of the present invention; Figure 3 It is a schematic diagram of a partial structure of an embodiment of the present invention; Figure 4 A schematic cross-sectional view of an air cylinder according to an embodiment of the present invention; Figure 5 A schematic cross-sectional view of the air blowing pipe according to an embodiment of the present invention; Figure 6 For an embodiment of the present invention Figure 5 Schematic diagram of the enlarged structure of point A.
[0021] In the figure: 1, frame; 2, first guide rail; 3, slider; 4, retaining frame; 5, second guide rail; 6, slide plate; 7, mounting seat; 8, synchronous wheel; 9, first motor; 10, synchronous belt; 11, connecting block; 12, second motor; 13, first gear; 14, first rack; 15, third motor; 16, second gear; 17, feeding plate; 18, second rack; 19, mounting box; 20, air cylinder; 201, exhaust pipe; 21, air bag; 22, air distribution pipe; 23, main air pipe; 24, first solenoid valve; 25, second solenoid valve; 26, extension seat; 27, air blowing pipe; 28, discharge pipe; 29, one-way valve; 30, piston; 31, strong magnet; 32, air distribution box; 33, mounting frame; 34, slide rod; 35, spring; 36, sealing sheet; 37, limit ring. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0023] In the description of the present invention, it should be understood that the terms "opening", "upper", "middle", "length", "inside" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.
[0024] In order to keep the following description of the embodiments of the present invention clear and concise, detailed descriptions of well-known functions and well-known components are omitted.
[0025] Embodiment 1 See also Figure 1-Figure 6 As shown, in this embodiment, a color printing film inserting device for in-mold labeling is provided, comprising: a frame 1, a first guide rail 2 is fixedly connected to the top of the frame 1, a slider 3 is slidably connected to the top of the first guide rail 2, a second guide rail 5 is fixedly connected to the slider 3, a slide plate 6 is slidably connected to the top of the second guide rail 5, one end of the slide plate 6 is fixedly connected to a mounting seat 7, a material taking plate 17 is slidably connected between the inner walls of both sides of the mounting seat 7, a mounting box 19 is fixedly connected to one side of the material taking plate 17, and a group of material taking components for taking materials are provided on one side of the mounting box 19; The material taking component includes an air cylinder 20 and a main air pipe 23. The air cylinder 20 is fixedly connected to one side of the mounting box 19. A group of air bags 21 are fixedly connected to the circumference of the air cylinder 20. An air distribution pipe 22 is fixedly connected inside the air cylinder 20. The air distribution pipe 22 is connected to the air bags 21. A second solenoid valve 25 is installed at one end of the air distribution pipe 22. The circumference of the air cylinder 20 is fixedly connected to multiple inclined exhaust pipes 201. The main air pipe 23 is fixedly connected to the top of the mounting box 19 and passes through the mounting box 19. The air distribution pipe 22 is connected to the main air pipe 23. The gas in the air bag 21 is released through the second solenoid valve 25. The air cylinder 20 is drawn out at the same time when the air is released. The gas in the air bag 21 is sprayed toward the inner wall of the cylindrical membrane through the inclined exhaust pipe 201 to prevent the cylindrical membrane from shifting due to negative pressure during rapid return, thereby improving the quality of the finished product.
[0026] Embodiment 2 Improved on the basis of embodiment 1: Refer to attached Figure 1-Figure 6 , Reference Figure 2 One side of the frame 1 is rotatably connected to two synchronous wheels 8, and a synchronous belt 10 is transmission-connected between the two synchronous wheels 8. A first motor 9 is fixedly connected to one side of the frame 1, and one end of the output shaft of the first motor 9 is fixed to one of the synchronous wheels 8. A connecting block 11 is fixedly connected to the bottom of the slider 3, and the connecting block 11 is fixed to the synchronous belt 10. Start the first motor 9, and the first motor 9 drives one of the synchronous wheels 8 to rotate the rod, and the synchronous belt 10 moves with the cooperation of the other synchronous wheel 8, and the slider 3 moves through the synchronous belt 10, and then the upper part moves as a whole, so as to realize the horizontal movement of the airbag 21 used for taking materials.
[0027] Reference Figure 3 A first rack 14 is fixedly connected to one side of the slide plate 6, a second motor 12 is fixedly connected to one side of the slider 3, and a first gear 13 is fixedly connected to one end of the output shaft of the second motor 12. The first gear 13 is meshed with the first rack 14. The second motor 12 is started, and the second motor 12 drives the first gear 13 to rotate. The first gear 13 drives the slide plate 6 and the mounting seat 7 to move forward and backward through the first rack 14, thereby realizing the forward and backward movement of the airbag 21 used for taking materials.
[0028] Reference Figure 3 A second rack 18 is fixedly connected to one side of the feeding plate 17, a third motor 15 is fixedly connected to one side of the mounting base 7, one end of the output shaft of the third motor 15 is fixedly connected to the second gear 16, the second gear 16 is meshed with the second rack 18, the third motor 15 is started, the third motor 15 drives the second gear 16 to rotate, the second gear 16 is meshed with the second rack 18, thereby driving the feeding plate 17 to move up and down.
[0029] Reference Figure 1The bottom of the slider 3 is fixedly connected to a retaining frame 4, and the bottom of the retaining frame 4 is rotatably connected to a roller, and the roller contacts the frame 1, so that the stability of the movement of the slider 3 is increased through the retaining frame 4.
[0030] Reference Figure 5 A blow pipe 27 is fixedly connected to one side of the frame 1, and a piston 30 is slidably connected in the blow pipe 27. An extension seat 26 is fixedly connected to the bottom of the retaining frame 4. A strong magnet 31 is fixedly connected to one side of the extension seat 26 and one end of the piston 30. The two strong magnets 31 are used in combination. A connected discharge pipe 28 is fixedly connected to the circumference of the blow pipe 27. The other end of the discharge pipe 28 passes through the mounting box 19 and is fixedly connected to a gas separation box 32. The gas separation box 32 is fixed to one side of the mounting box 19. A one-way valve 29 is provided on the circumference of the discharge pipe 28. By installing the gas separation box 32 on one side of the airbag 21, air pressure can be generated by the movement of the piston 30 during the material taking process of the airbag 21, and then sprayed to the airbag 21 through the gas separation box 32, thereby reducing the temperature of the airbag 21 and facilitating use. A first solenoid valve 24 is fixedly connected to the top of the main air pipe 23.
[0031] Reference Figure 6 One end of the air blowing pipe 27 is fixedly connected to a mounting frame 33, a sliding rod 34 is inserted into one side of the mounting frame 33, one end of the sliding rod 34 is fixedly connected to a sealing sheet 36, and a limiting ring 37 used in conjunction with the sealing sheet 36 is fixedly connected to the circumferential inner wall of the air blowing pipe 27, a spring 35 is fixedly connected between the sliding rod 34 and the mounting frame 33, and the sealing sheet 36 and the limiting ring 37 cooperate to seal one end of the air blowing pipe 27 to prevent air leakage during cooling.
[0032] The present invention also provides a method for using a color printing film inserting device for in-mold labeling, comprising the following steps: S1: When in use, the first motor 9 is started, and the first motor 9 drives one of the synchronous wheels 8 to rotate the rod, and the synchronous belt 10 moves with the cooperation of the other synchronous wheel 8, and the slider 3 is driven to move by the synchronous belt 10, and then the upper body is driven to move, so as to realize the horizontal movement of the airbag 21 for taking materials; S2: Start the second motor 12, the second motor 12 drives the first gear 13 to rotate, the first gear 13 drives the slide plate 6 and the mounting seat 7 to move forward and backward through the first rack 14, thereby realizing the forward and backward movement of the airbag 21 for taking materials; S3: Start the third motor 15, the third motor 15 drives the second gear 16 to rotate, the second gear 16 meshes with the second rack 18, and then drives the material taking plate 17 to move up and down, thereby realizing the up and down movement of the air bag 21 for taking materials, and the first motor 9, the second motor 12 and the third motor 15 cooperate to insert the air cylinder 20 and the air bag 21 into the prepared cylindrical film, and then inject compressed air into the air bag 21 through the main air pipe 23 and the branch air pipe 22, so as to take the cylindrical film, and then move it and insert it into the mold; S4: After the cylindrical film enters the mold, the gas in the airbag 21 is released through the second solenoid valve 25, and the air cylinder 20 is extracted at the same time. The gas in the airbag 21 is sprayed toward the inner wall of the cylindrical film through the inclined exhaust pipe 201 to prevent the cylindrical film from shifting due to negative pressure during rapid return, thereby improving the quality of the finished product; S5: When the slider 3 moves, it also drives the retaining frame 4 to move. The retaining frame 4 drives the piston 30 to move through the strong magnet 31. When the piston 30 moves toward one end of the sealing plate 36, the gas in the limit ring 37 is pushed out and discharged into the gas separation box 32 through the discharge pipe 28. Then, the gas is blown toward the airbag 21 through the gas separation box 32 to reduce the temperature of the airbag 21. When the piston 30 moves in the opposite direction, there is a negative pressure in the blowing pipe 27, and the gas pushes open the sealing plate 36 and enters the blowing pipe 27 to replenish the blowing pipe 27 with air.
[0033] It should be noted that, in the description of this specification, descriptions such as "first", "second", etc. are merely used to distinguish between various features and have no actual order or directional meaning, and this application is not limited to this.
[0034] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0035] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.
Claims
1. A color printing film inserting device for in-mold labeling, characterized in that: include: A frame (1), wherein the top of the frame (1) is fixedly connected to a first guide rail (2), the top of the first guide rail (2) is slidably connected to a slider (3), the slider (3) is fixedly connected to a second guide rail (5), the top of the second guide rail (5) is slidably connected to a slide plate (6), one end of the slide plate (6) is fixedly connected to a mounting seat (7), a material taking plate (17) is slidably connected between the inner walls of both sides of the mounting seat (7), one side of the material taking plate (17) is fixedly connected to a mounting box (19), and one side of the mounting box (19) is provided with a group of material taking components for taking materials; The material taking component comprises an air cylinder (20) and a main air pipe (23), the air cylinder (20) being fixedly connected to one side of the installation box (19), a group of air bags (21) being fixedly connected to the circumference of the air cylinder (20), an air distribution pipe (22) being fixedly connected inside the air cylinder (20), the air distribution pipe (22) being communicated with the air bags (21), a second solenoid valve (25) being installed at one end of the air distribution pipe (22), a plurality of obliquely arranged exhaust pipes (201) being fixedly connected to the circumference of the air cylinder (20), the main air pipe (23) being fixedly connected to the top of the installation box (19) and penetrating the installation box (19), the air distribution pipe (22) being communicated with the main air pipe (23).
2. The color printing film inserting device for in-mold labeling according to claim 1, characterized in that: One side of the frame (1) is rotatably connected to two synchronous wheels (8), and a synchronous belt (10) is transmission-connected between the two synchronous wheels (8). One side of the frame (1) is fixedly connected to a first motor (9), and one end of an output shaft of the first motor (9) is fixed to one of the synchronous wheels (8). The bottom of the slider (3) is fixedly connected to a connecting block (11), and the connecting block (11) is fixed to the synchronous belt (10).
3. The color printing film inserting device for in-mold labeling according to claim 1, characterized in that: A first rack (14) is fixedly connected to one side of the slide plate (6), a second motor (12) is fixedly connected to one side of the slide block (3), a first gear (13) is fixedly connected to one end of an output shaft of the second motor (12), and the first gear (13) is meshed with the first rack (14).
4. The color printing film inserting device for in-mold labeling according to claim 1, characterized in that: A second rack (18) is fixedly connected to one side of the material taking plate (17), a third motor (15) is fixedly connected to one side of the mounting seat (7), a second gear (16) is fixedly connected to one end of an output shaft of the third motor (15), and the second gear (16) is meshed with the second rack (18).
5. The color printing film inserting device for in-mold labeling according to claim 1, characterized in that: The bottom of the slider (3) is fixedly connected to a retaining frame (4), and the bottom of the retaining frame (4) is rotatably connected to a roller, which contacts the frame (1).
6. The color printing film inserting device for in-mold labeling according to claim 5, characterized in that: A blow pipe (27) is fixedly connected to one side of the frame (1), a piston (30) is slidably connected inside the blow pipe (27), an extension seat (26) is fixedly connected to the bottom of the retaining frame (4), one side of the extension seat (26) and one end of the piston (30) are both fixedly connected to strong magnets (31), the two strong magnets (31) are used in conjunction with each other, a connected discharge pipe (28) is fixedly connected to the circumference of the blow pipe (27), the other end of the discharge pipe (28) passes through the installation box (19) and is fixedly connected to a gas distribution box (32), the gas distribution box (32) is fixed to one side of the installation box (19), and a one-way valve (29) is provided on the circumference of the discharge pipe (28).
7. The color printing film inserting device for in-mold labeling according to claim 6, characterized in that: One end of the air blowing pipe (27) is fixedly connected to a mounting frame (33), one side of the mounting frame (33) is plugged with a sliding rod (34) passing through, one end of the sliding rod (34) is fixedly connected to a sealing sheet (36), a limiting ring (37) used in conjunction with the sealing sheet (36) is fixedly connected to the circumferential inner wall of the air blowing pipe (27), and a spring (35) is fixedly connected between the sliding rod (34) and the mounting frame (33).
8. The color printing film inserting device for in-mold labeling according to claim 1, characterized in that: A first solenoid valve (24) is fixedly connected to the top of the main air pipe (23).
9. The method for using the color printing film inserting device for in-mold labeling according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1: When in use, the first motor (9) is started, and the first motor (9) drives one of the synchronous wheels (8) to rotate the rod, and the synchronous belt (10) is moved with the cooperation of the other synchronous wheel (8), and the sliding block (3) is driven to move by the synchronous belt (10), thereby driving the upper body to move as a whole, so as to realize the horizontal movement of the airbag (21) used for taking materials; S2: starting the second motor (12), the second motor (12) drives the first gear (13) to rotate, the first gear (13) drives the slide plate (6) and the mounting seat (7) to move forward and backward through the first rack (14), thereby realizing the forward and backward movement of the air bag (21) for taking materials; S3: starting the third motor (15), the third motor (15) drives the second gear (16) to rotate, the second gear (16) meshes with the second rack (18), thereby driving the material taking plate (17) to move up and down, thereby realizing the up and down movement of the air bag (21) for taking the material, and inserting the air cylinder (20) and the air bag (21) into the prepared cylindrical film through the cooperation of the first motor (9), the second motor (12) and the third motor (15), and then injecting compressed air into the air bag (21) through the main air pipe (23) and the branch air pipe (22), thereby taking the cylindrical film, and then moving it and inserting it into the mold; S4: After the cylindrical film enters the mold, the gas in the airbag (21) is released through the second solenoid valve (25), and the air cylinder (20) is simultaneously drawn out while the gas in the airbag (21) is sprayed toward the inner wall of the cylindrical film through the inclined exhaust pipe (201), thereby preventing the cylindrical film from shifting due to negative pressure during rapid return, thereby improving the quality of the finished product; S5: When the slider (3) moves, the retaining frame (4) is also driven to move. The retaining frame (4) drives the piston (30) to move through the strong magnet (31). When the piston (30) moves toward one end of the sealing plate (36), the gas in the limit ring (37) is pushed out and discharged into the gas distribution box (32) through the discharge pipe (28). Then, the gas is blown toward the air bag (21) through the gas distribution box (32), thereby reducing the temperature of the air bag (21). When the piston (30) moves in the opposite direction, a negative pressure is formed in the air blowing pipe (27), and the gas pushes open the sealing plate (36) and enters the air blowing pipe (27), thereby replenishing the air blowing pipe (27).