Film cutting device, bag filling machine and film cutting method

Abstract

The present invention relates to the field of packaging box production, and discloses a film cutting device, a bag filling machine, and a film cutting method, comprising: a knife holder; a film suction component installed on the knife holder, the film suction component including a suction hole group, used to suction the film to be cut so that the portion to be cut of the film to be cut is lifted; a cutting component installed on the knife holder, the cutting component is located behind the film suction component along the moving direction of the knife holder, and is used to cut the film to be cut suctioned by the film suction component. In the film cutting device provided by the present invention, the film to be cut is suctioned by the film suction component so that the portion to be cut of the film to be cut is lifted so that a gap space is generated between the packaging film and the surface of the packaging object, and then the packaging film is cut by the cutting component without touching the packaging object, thereby avoiding the problem of the packaging object being scratched during the cutting process.

Description

Technical Field

[0001] The invention relates to the technical field of packaging box production, and in particular to a film cutting device, a bag filling machine and a film cutting method. Background Art

[0002] Before forming, cartons are usually sealed in packaging film to facilitate transportation and storage, while preventing the cartons from being contaminated by the external environment. When the cartons sealed in packaging film are used in the filling machine, the packaging film outside the carton needs to be cut to take out the carton. In this process, manual cutting or laser cutting is usually used, but the above methods cannot avoid the problem of damaging the carton in the packaging film during the cutting process. Summary of the invention

[0003] The invention discloses a film cutting device, a bag filling machine and a film cutting method, which are used to avoid the problem of damaging the packaged objects in the packaging film during the cutting process.

[0004] In order to achieve the above object, the present invention provides the following technical solutions:

[0005] A film cutting device, comprising:

[0006] Knife holder;

[0007] A film suction assembly installed on the tool holder, the film suction assembly comprising a suction hole group, used for sucking the film to be cut so that the to-be-cut portion of the film to be cut is lifted;

[0008] The cutting assembly is installed on the knife holder, and is located behind the film absorbing assembly along the moving direction of the knife holder, and is used for cutting the film to be cut adsorbed by the film absorbing assembly.

[0009] In the above-mentioned film cutting device, a film suction component and a cutting component are provided on the tool holder. Specifically, along the moving direction of the tool holder, the cutting component is located behind the film suction component, that is, the film cutting device first absorbs the packaging film covering the packaging object, that is, the film to be cut, through the film suction component, and absorbs the film to be cut through the adsorption force of the adsorption hole group so that the to-be-cut part of the film to be cut is lifted, even if a gap space is generated between the packaging film and the packaging object, and then the film to be cut is moved toward the cutting component by moving the tool holder or moving the film to be cut until it is cut by the cutting component, thereby completing the cutting process.

[0010] If the packaging film is in close contact with the surface of the packaging object, the packaging object may be damaged if a blade is used to cut it directly. Therefore, in the film cutting device provided by the present invention, the film to be cut is adsorbed by a film suction component so that the to-be-cut portion of the film to be cut is lifted to create a gap between the packaging film and the surface of the packaging object. The packaging film is then cut by the cutting component without touching the packaging object, thereby avoiding the problem of the packaging object being scratched during the cutting process.

[0011] Optionally, the tool holder includes a working surface, the adsorption hole group is formed on the working surface, and the film to be cut is lifted to the working surface.

[0012] Optionally, the adsorption hole group further includes a first adsorption hole and a plurality of second adsorption holes, and along the moving direction of the tool holder, the plurality of second adsorption holes are located on both sides of the first adsorption hole.

[0013] Optionally, a size of the second adsorption hole is smaller than a size of the first adsorption hole.

[0014] Optionally, the adsorption holes of the adsorption hole group are circular holes or square holes.

[0015] Optionally, the cutting assembly includes a handle mounted on the tool holder and a guide rod and a cutting blade connected to the handle, the guide rod protruding out of the working surface is used to cooperate with the working surface to form a gap, the gap is open toward one end of the film suction assembly and is used to allow the film to be cut to pass through; the cutting blade is located in the gap, and the cutting edge of the cutting blade faces the film suction assembly.

[0016] Optionally, a sharp portion is formed on one end of the guide rod facing the film suction assembly.

[0017] Optionally, the distance between the end of the guide rod close to the film suction assembly and the working surface ranges from 0 mm to 100 mm.

[0018] Optionally, the distance between the end of the guide rod close to the film suction assembly and the working surface is 0 mm-10 mm.

[0019] Optionally, an angle formed between the side surface of the guide rod facing the working surface and the working surface is in a range of 0°-90°.

[0020] Optionally, an angle formed between the side surface of the guide rod facing the working surface and the working surface is 0°-15°.

[0021] Optionally, the film cutting device further comprises a film blowing assembly located on a side of the cutting assembly away from the film absorbing assembly, and the film blowing assembly comprises blowing holes formed on the working surface for separating the film cut by the cutting assembly from the working surface.

[0022] Optionally, a flexible layer is provided on the working surface of the tool holder.

[0023] Optionally, the material of the flexible layer is silicone.

[0024] The present invention further provides a bag filling machine, wherein a carton upper area of ​​the bag filling machine is provided with a film cutting device as described in any one of the above technical solutions.

[0025] The present invention also provides a film cutting method, comprising:

[0026] Adsorbing the film to be cut by the film absorbing component so as to form a gap space between the film to be cut and the product wrapped by it;

[0027] The cutting blade extends into the gap space to cut the to-be-cut portion of the to-be-cut film.

[0028] Optionally, before the cutting blade extends into the gap space to cut the to-be-cut portion of the to-be-cut film, the method further comprises:

[0029] The guide rod extends into the gap space;

[0030] The film suction component is always in the suction working state during the cutting process to lift the part to be cut, or,

[0031] The film suction assembly is in a non-adsorption working state after the guide rod extends into the gap space, and the guide rod lifts the portion to be cut. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic structural diagram of a film cutting device provided in an embodiment of the present invention;

[0033] Figure 2 A schematic structural diagram of another film cutting device provided in an embodiment of the present invention;

[0034] Figure 3 for Figure 2 A cross-sectional view of a cutting assembly in a film cutting device provided in;

[0035] Figure 4 Set up the schematic for the angle of the guide rod;

[0036] Figure 5 A schematic structural diagram of another film cutting device provided in an embodiment of the present invention.

[0037] In the figure: 1- tool holder; 11- working surface; 2- film suction assembly; 21- first suction hole; 22- second suction hole; 3- cutting assembly; 31- tool handle; 32- guide rod; 33- cutting blade; 321- sharp part; 4- film blowing assembly; 41- blowing hole; 5- flexible layer. DETAILED DESCRIPTION

[0038] 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.

[0039] like Figures 1 to 5 As shown, an embodiment of the present invention provides a film cutting device, comprising: a tool holder 1; a film suction component 2 installed on the tool holder 1, the film suction component 2 including an adsorption hole group, which is used to adsorb the film to be cut so that the part to be cut of the film to be cut is lifted; a cutting component 3 installed on the tool holder 1, along the moving direction of the tool holder 1, the cutting component 3 is located behind the film suction component 2, and is used to cut the film to be cut adsorbed by the film suction component 2.

[0040] In the above-mentioned film cutting device, a film suction component 2 and a cutting component 3 are provided on the tool holder 1. Specifically, along the moving direction of the tool holder 1, the cutting component 3 is located behind the film suction component 2, that is, the film cutting device first absorbs the packaging film covering the packaging material, that is, the film to be cut, through the film suction component 2, and absorbs the film to be cut through the adsorption force of the adsorption hole group so that the part to be cut of the film to be cut is lifted, even if a gap space is generated between the packaging film and the packaging material, and then the tool holder 1 is moved or the film to be cut is moved so that the film to be cut moves toward the cutting component 3 until it is cut by the cutting component 3, and the cutting process is completed.

[0041] If the packaging film is in close contact with the surface of the packaging object, the packaging object may be damaged if it is cut directly with a blade. Therefore, in the film cutting device provided by the present invention, the film to be cut is adsorbed by the film suction component 2 so that the to-be-cut portion of the film to be cut is lifted to create a gap between the packaging film and the surface of the packaging object. The packaging film is then cut by the cutting component 3 without touching the packaging object, thereby avoiding the problem of the packaging object being scratched during the cutting process.

[0042] Optionally, the tool holder 1 includes a working surface 11 , a group of adsorption holes is formed on the working surface 11 , and the film to be cut is lifted to the working surface 11 .

[0043] Optionally, the adsorption hole group includes a first adsorption hole 21 and a plurality of second adsorption holes 22 , and along the traveling direction of the film to be cut, the plurality of second adsorption holes 22 are located on both sides of the first adsorption hole 21 .

[0044] In one possible implementation, the film suction assembly 2 creates a gap space between the packaging film and the packaged object by vacuum suction and lifting movement. The film suction assembly 2 includes a first suction hole 21 formed on the working surface 11 of the tool holder 1. The first suction hole 21 is used to install a vacuum head to facilitate vacuum suction.

[0045] In a possible implementation, the adsorption hole group includes a plurality of adsorption holes, including a first adsorption hole 21 and a plurality of second adsorption holes 22, as shown in FIG. Figure 1 As shown, the film suction assembly 2 is located on the left side of the cutting assembly 3. Along the traveling direction of the film to be cut, i.e. from left to right, two second suction holes 22 are located above the first suction holes 21, and the other two second suction holes 22 are located below the first suction holes 21.

[0046] Optionally, the size of the second adsorption hole 22 is smaller than the size of the first adsorption hole 21 .

[0047] like Figure 1 As shown, the sizes of the plurality of second adsorption holes 22 are equal, and the size of the second adsorption holes 22 is smaller than the size of the first adsorption holes 21 .

[0048] Optionally, the adsorption holes of the adsorption hole group are circular holes or square holes.

[0049] It should be noted that the main function of the adsorption hole is to adsorb the packaging film to the working surface 11 of the tool holder 1 through vacuum absorption, so the shape of the adsorption hole can be circular, square, elliptical, etc.

[0050] One possible way to achieve this is as follows: Figure 1 As shown, the adsorption hole group includes a square first adsorption hole 21 and a circular second adsorption hole 22. Compared with the square adsorption hole group, the circular adsorption hole has a higher vacuum absorption efficiency because it has no edges and corners.

[0051] Another possible implementation method is Figure 2 As shown, the adsorption hole group is a circular first adsorption hole 21. Compared with the square adsorption hole group, the circular adsorption hole has a higher vacuum absorption efficiency because it has no edges and corners.

[0052] Optionally, the cutting assembly 3 includes a handle 31 mounted on the tool holder 1, and a guide rod 32 and a cutting blade 33 connected to the handle 31. The guide rod 32 protrudes out of the working surface 11 and is used to cooperate with the working surface 11 to form a gap. The gap is open toward one end of the film suction assembly 2 and is used to allow the film to be cut to pass through; the cutting blade 33 is located in the gap, and the blade edge of the cutting blade 33 faces the film suction assembly 2.

[0053] One possible way to achieve this is as follows: Figure 2 and Figure 3 As shown, the cutting assembly 3 includes a handle 31, a guide rod 32 and a cutting blade 33. The tool holder 1 is provided with a receiving cavity for receiving the guide rod 32 and the cutting blade 33. The opening of the receiving cavity faces the working surface 11. The guide rod 32 protrudes from the receiving cavity to the working surface 11 and cooperates with the working surface 11 to form a gap. When the film cutting device is in operation, the film suction assembly 2 absorbs the packaging film to the working surface 11, and a gap space is formed between the packaging film and the package. By moving the tool holder 1, the guide rod 32 is inserted into the gap space between the packaging film and the package, ensuring that the packaging film is always located above the guide rod 32 and below the working surface 11 of the tool holder 1, and there is a gap between the guide rod 32 and the package, ensuring that the cutting blade 33 does not touch the package while cutting the packaging film by moving the tool holder 1. After the guide rod 32 is inserted into the gap space between the packaging film and the package, the tool holder 1 is moved ( Figure 2 Move tool holder 1 to the left. Figure 3The knife holder 1 is moved rightward in the middle, and the packaging film, i.e., the film to be cut, enters the gap formed by the cooperation of the guide rod 32 and the working surface 11 until it contacts the cutting blade 33, and the packaging film is cut by the cutting blade 33. In the above-mentioned film cutting device, the guide rod 32 separates the cutting blade 33 from the package, thereby preventing the cutting blade 33 from scratching the package. At the same time, there is a gap between the guide rod 32 and the package, thereby preventing the guide rod 32 from scratching the surface of the package.

[0054] Optionally, a sharp portion 321 is formed on one end of the guide rod 32 facing the film suction assembly 2 .

[0055] In one possible implementation, in order to facilitate the guide rod 32 to penetrate the packaging film and enter the gap space between the packaging film and the packaged object, a sharp portion 321 is formed at one end of the guide rod 32 facing the film suction assembly 2. During the movement of the tool holder 1, the sharp portion 321 first contacts the packaging film and pierces the packaging film to facilitate subsequent operations.

[0056] Optionally, the distance between the end of the guide rod 32 close to the film suction assembly 2 and the working surface 11 ranges from 0 mm to 100 mm.

[0057] It should be noted that if Figure 3 As shown, the film suction assembly 2 is a gap space formed between the packaging film and the packaging, there is a gap between the guide rod 32 and the working surface 11, and there needs to be a gap between the guide rod 32 and the packaging, so the gap between the guide rod 32 and the working surface 11 cannot be too large or too small. If the gap is too small, the insertion of the guide rod 32 will be affected, and the packaging, such as a paper box, may be damaged; if the gap is too large, the packaging film will be greatly deformed, and the packaging, such as a paper box, will also be greatly deformed, thereby damaging the paper box. Generally, the cross-sectional size of the packaging film including the paper box ranges from 87mm×107mm to 165mm×300mm. The distance d between the end of the guide rod 32 close to the film suction assembly 2 and the working surface 11 satisfies 0mm<d≤100mm, for example, it can be but not limited to 5mm, 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 55mm, 60mm, 65mm, 70mm, 75mm, 80mm, 85mm, 90mm, 95mm or 100mm.

[0058] Optionally, the distance d between the end of the guide rod 32 close to the film suction assembly 2 and the working surface 11 is 0 mm-10 mm, for example, but not limited to 2 mm, 4 mm, 6 mm or 8 mm.

[0059] In one possible implementation, the distance between the end of the guide rod 32 close to the film suction assembly 2 and the working surface 11 is 6.2 mm, ensuring that the packaging film is always located above the guide rod 32 and below the working surface 11 of the tool holder 1, and there is a gap between the guide rod 32 and the package, ensuring that the cutting blade 33 will not touch the package while cutting the packaging film by moving the tool holder 1.

[0060] Optionally, the angle θ between the side of the guide rod 32 facing the working surface 11 and the working surface 11 ranges from 0° to 90°, for example, but not limited to, 10°, 20°, 30°, 40°, 50°, 60°, 70° or 80°.

[0061] It can be understood that the film suction assembly 2 absorbs vacuum through the suction hole group on the working surface 11, and the suction hole group absorbs the packaging film into the hole, so that a gap space is formed between the packaging film and the packaging. Figure 4 As shown, the packaging film on the side facing the cutting component 3 is inclined to the lower right. Therefore, in order to increase the force between the end of the guide rod 32 and the packaging film, the guide rod 32 is inclined to the lower left, that is, the side of the guide rod 32 facing the working surface 11 forms an acute angle with the working surface 11, and the guide rod 32 is made as perpendicular as possible to the plane of the packaging film on the side facing the cutting component 3 to facilitate the guide rod 32 to pierce the packaging film.

[0062] Optionally, the angle θ between the side of the guide rod 32 facing the working surface 11 and the working surface 11 ranges from 0° to 15°, for example, but not limited to 3°, 6°, 9°, 12° or 15°.

[0063] In a possible implementation, the angle between the side of the guide rod 32 facing the working surface 11 and the working surface 11 is 7°.

[0064] Optionally, the film cutting device further comprises a film blowing assembly 4 located on the side of the cutting assembly 3 away from the film absorbing assembly 2 , and the film blowing assembly 4 comprises a blowing hole 41 formed on the working surface 11 for separating the film cut by the cutting assembly 3 from the working surface 11 .

[0065] In a possible implementation, the film cutting device further includes a film blowing assembly 4 located on the side of the cutting assembly 3 away from the film absorbing assembly 2. After the cutting assembly 3 cuts the packaging film, the film blowing assembly 4 uses compressed air to blow gas to blow the packaging film close to the working surface 11 away from the working surface 11. At the same time, the gas from the blowing hole 41 can also blow away the pollutants on the surface of the packaging, thereby cleaning the surface of the packaging to a certain extent. Figure 2As shown, the blowing hole 41 is a circular hole, and there are multiple blowing holes 41, and they are located at one end of the tool holder 1 where the cutting blade 33 is installed. Three of the blowing holes 41 are located above the accommodating cavity of the tool holder 1 for accommodating the cutting component 3, and the other three blowing holes 41 are located below the accommodating cavity of the tool holder 1 for accommodating the cutting component 3, and the upper and lower blowing holes 41 are arranged opposite to each other.

[0066] Optionally, a flexible layer 5 is provided on the working surface 11 of the tool holder 1 .

[0067] One possible way to achieve this is as follows: Figure 5 As shown, a flexible layer 5 is applied on the working surface 11 of the tool holder 1 , which improves the vacuum suction efficiency of the film suction assembly 2 , so that a better seal is formed between the film to be cut and the working surface 11 .

[0068] Optionally, the material of the flexible layer 5 is silicone.

[0069] Based on the same inventive concept, an embodiment of the present invention further provides a packaging filling machine, wherein the upper carton area of ​​the packaging filling machine is provided with any film cutting device as provided in the above technical solution.

[0070] In a specific embodiment, the above-mentioned film cutting device is provided in the carton loading area of ​​the filling machine, which improves the carton loading efficiency of the filling machine without damaging the carton surface.

[0071] Based on the same inventive concept, an embodiment of the present invention further provides a film cutting method, comprising:

[0072] The film to be cut is adsorbed by the film adsorption assembly 2 so as to form a gap space between the film to be cut and the product wrapped therein; the cutting blade 33 extends into the gap space to cut the portion to be cut of the film to be cut.

[0073] It should be noted that in the present method, the film to be cut is adsorbed so that the portion to be cut of the film to be cut is lifted to create a gap space between the packaging film and the surface of the packaging object, and then the cutting blade 33 is inserted into the gap space to cut the packaging film. At the same time, the cutting blade 33 will not touch the packaging object, thereby avoiding the problem of the packaging object being scratched during the cutting process.

[0074] In a possible implementation, the film suction assembly 2 absorbs the packaging film and lifts the portion of the packaging film to be cut, forming a gap space between the packaging film and the packaged object, ensuring that the cutting blade 33 does not touch the packaged object while cutting the packaging film by moving the tool holder 1.

[0075] Optionally, before the cutting blade 33 extends into the gap space to cut the portion to be cut of the film to be cut, the following also includes: the guide rod 32 extends into the gap space; the film suction assembly 2 is always in an adsorption working state during the cutting process to lift the portion to be cut, or, the film suction assembly 2 is in a non-adsorption working state after the guide rod 32 extends into the gap space, and the guide rod 32 lifts the portion to be cut.

[0076] In a possible implementation, during the film cutting process, the film suction component 2 is always in an adsorption working state, providing adsorption force to lift the portion of the packaging film to be cut, and forming a gap space between the packaging film and the packaged object.

[0077] In one possible implementation, during the film cutting process, the film suction component 2 is initially in an adsorption working state, providing adsorption force to lift the portion of the packaging film to be cut, forming a gap space between the packaging film and the packaged object, and the guide rod 32 extends into the gap space. At the same time, the film suction component 2 is in a non-adsorption working state, and the guide rod 32 lifts the portion of the packaging film to be cut.

[0078] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A film cutting device, It is characterized in that include: Tool holder (1); A film suction component (2) installed on the knife holder (1), the film suction component (2) comprising a suction hole group, used for sucking the film to be cut so that the to-be-cut portion of the film to be cut is lifted; A cutting assembly (3) mounted on the knife holder (1), located behind the film absorbing assembly (2) along the moving direction of the knife holder (1), and used for cutting the film to be cut adsorbed by the film absorbing assembly (2). The tool holder (1) comprises a working surface (11); the cutting assembly (3) comprises a tool handle (31) mounted on the tool holder (1), a guide rod (32) and a cutting blade (33) connected to the tool handle (31); the guide rod (32) protrudes out of the working surface (11) and is used to cooperate with the working surface (11) to form a gap, the gap is open toward one end of the film suction assembly (2) and is used to allow the film to be cut to pass through; the cutting blade (33) is located in the gap, and the cutting edge of the cutting blade (33) faces the film suction assembly (2).

2. The film cutting device according to claim 1, It is characterized in that The adsorption hole group is formed on the working surface (11), and the film to be cut is lifted to the working surface (11).

3. The film cutting device according to claim 1, It is characterized in that The adsorption hole group comprises a first adsorption hole (21) and a plurality of second adsorption holes (22), and along the moving direction of the tool holder (1), the plurality of second adsorption holes (22) are located on both sides of the first adsorption hole (21).

4. The film cutting device according to claim 3, It is characterized in that The size of the second adsorption hole (22) is smaller than the size of the first adsorption hole (21).

5. The film cutting device according to claim 1, It is characterized in that The adsorption holes of the adsorption hole group are circular holes or square holes.

6. The film cutting device according to claim 1, It is characterized in that A sharp portion (321) is formed at one end of the guide rod (32) facing the film suction assembly (2).

7. The film cutting device according to claim 1, It is characterized in that The distance between the end of the guide rod (32) close to the film suction assembly (2) and the working surface (11) is in the range of 0 mm to 100 mm.

8. The film cutting device according to claim 1, It is characterized in that The distance between the end of the guide rod (32) close to the film suction assembly (2) and the working surface (11) is 0 mm-10 mm.

9. The film cutting device according to claim 1, It is characterized in that The angle formed between the side surface of the guide rod (32) facing the working surface (11) and the working surface (11) is in the range of 0°-90°.

10. The film cutting device according to claim 1, It is characterized in that The angle formed between the side surface of the guide rod (32) facing the working surface (11) and the working surface (11) is 0°-15°.

11. The film cutting device according to claim 2, It is characterized in that The film cutting device further comprises a film blowing assembly (4) located on a side of the cutting assembly (3) away from the film suction assembly (2); the film blowing assembly (4) comprises a blowing hole (41) formed on the working surface (11) for separating the film cut by the cutting assembly (3) from the working surface (11).

12. The film cutting device according to any one of claims 2 to 11, It is characterized in that A flexible layer (5) is provided on the working surface (11) of the tool holder (1).

13. The film cutting device according to claim 12, It is characterized in that The material of the flexible layer (5) is silica gel.

14. A bag filling machine, It is characterized in that The upper carton area of ​​the packaging machine is provided with a film cutting device as described in any one of claims 1-13.

15. A film cutting method using the film cutting device according to claim 1, It is characterized in that include: The film to be cut is adsorbed by a film adsorption component (2) so as to form a gap space between the film to be cut and the product wrapped therein; The cutting blade (33) extends into the gap space to cut the to-be-cut portion of the to-be-cut film.

16. The film cutting method according to claim 15, It is characterized in that Before the cutting blade (33) extends into the gap space to cut the to-be-cut portion of the to-be-cut film, the method further comprises: The guide rod (32) extends into the gap space; The film suction component (2) is always in a suction working state during the cutting process to lift the portion to be cut, or, The film suction assembly (2) is in a non-adsorption working state after the guide rod (32) extends into the gap space, and the guide rod (32) lifts the portion to be cut.

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