Packaging film cutting mechanism

Abstract

This utility model discloses a packaging film cutting mechanism, including a mounting frame, a cutting assembly, and a driving device. The cutting assembly includes a die and a movable cutter. The die is mounted on the mounting frame and has a cutting groove. When the movable cutter is in a first position, it is opposite to the cutting groove, and a feeding gap is formed between the movable cutter and the die. When the movable cutter is in a second position, it is inserted into the cutting groove. The driving device is mounted on the mounting frame and is connected to a mounting base. The movable cutter is connected to the mounting base. A guide structure is provided between the mounting base and the mounting frame. Guide portions are connected to both ends of the movable cutter in the width direction. The die has two guide grooves, and one end of each guide portion protrudes from the movable cutter and is inserted into the two guide grooves respectively. The packaging film cutting mechanism provided by this utility model can effectively reduce the offset of the movable cutter during movement, thereby avoiding jamming or skewed cuts, ensuring normal production and cutting quality.

Description

Technical Field

[0001] This utility model relates to the field of packaging equipment technology, and in particular to a packaging film cutting mechanism. Background Technology

[0002] In existing packaging film packaging equipment, a cutting mechanism is typically used to cut the finished packaging portion of the film. This cutting mechanism generally includes a drive unit, a movable cutter mounted on the drive unit, and a fixed cutter mounted on a mounting frame. The movable and fixed cutters are offset from each other, and the packaging film passes between them. A cylinder drives the movable cutter to rise and fall. When the movable cutter approaches the fixed cutter, it descends along one side of the fixed cutter, thus allowing the movable and fixed cutters to work together to cut the packaging film. However, this cutting mechanism is prone to problems due to factors such as guide errors in the drive unit and vibrations caused by high-speed repeated cutting. As the movable cutter moves closer to the fixed cutter, it is prone to significant deviation from the side of the fixed cutter, which can lead to jamming or skewed cuts. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a packaging film cutting mechanism that can effectively reduce the offset of the moving cutter during movement, thereby avoiding jamming or skewed cuts, ensuring normal production and cutting quality.

[0004] A packaging film cutting mechanism according to an embodiment of the present invention includes a mounting frame, a cutting assembly, and a driving device. The cutting assembly includes a die and a movable cutter. The die is mounted on the mounting frame and has a cutting groove adapted to the movable cutter. The movable cutter has a first position and a second position. When the movable cutter is in the first position, it is opposite to the cutting groove and a feeding gap is formed between it and the die. When the movable cutter is in the second position, it is inserted into the cutting groove. The driving device is disposed on the mounting frame and is drivenly connected to a mounting base. The end of the movable cutter facing away from the die is connected to the mounting frame. The mounting base, driven by a driving device, is configured to move the movable cutter between a first position and a second position, so that the movable cutter cooperates with the sidewall of the cutting groove to cut the packaging film. A guide structure is provided between the mounting base and the mounting frame to guide the movement of the mounting base. Guide portions are connected to both ends of the movable cutter in the width direction. The die-cutting mold has two guide grooves. The cutting groove is located between and communicates with the two guide grooves. One end of each guide portion protrudes from the movable cutter and is inserted into one of the two guide grooves, so that the movable cutter is guided to move through the cooperation between the guide portions and the guide grooves.

[0005] The packaging film cutting mechanism according to the embodiments of the present invention has at least the following beneficial effects: The packaging film cutting mechanism provided by the present invention has a driving device that can drive the mounting base to move the movable cutter between a first position and a second position, so that the movable cutter and the side wall of the cutting groove cooperate to cut the packaging film. A guide structure for guiding the movement of the mounting base is provided between the mounting base and the mounting frame, and the movement of the movable cutter is also guided by the cooperation of the guide groove and the guide part between the die and the movable cutter. This forms a double-sided guiding effect on the movement of the movable cutter, which can effectively reduce the offset of the movable cutter relative to the cutting groove of the die during the movement, thereby avoiding the situation of blade jamming or skewed cut, ensuring normal production and cutting quality.

[0006] According to some embodiments of the present invention, the moving cutter is integrally formed with the two guide portions.

[0007] According to some embodiments of the present invention, a transition section is formed at the connection between the movable cutter and the guide portion. The transition section has rounded corners on both sides in the thickness direction of the movable cutter. A transition groove adapted to the transition section is formed at the connection between the cutting groove and the guide groove. When the movable cutter is in the second position, the transition section is inserted into the transition groove.

[0008] According to some embodiments of the present invention, the guide portion has at least two guide sides, the guide groove has at least two guide inner walls, and the guide sides are in contact with the corresponding guide inner walls.

[0009] According to some embodiments of the present invention, the opposite side walls of the cutting groove are formed with a cutting edge at one end near the moving cutter. The side of the cutting edge facing the moving cutter is set at an acute angle to the side of the cutting edge facing the inside of the cutting groove. The side of the moving cutter facing the die is set at a right angle to the opposite sides of the moving cutter in the thickness direction. The side of the cutting edge facing the inside of the cutting groove is perpendicular to the side of the moving cutter facing the die.

[0010] According to some embodiments of the present invention, the guide structure includes two sleeves and two sliding shafts. The sleeves are mounted on the mounting bracket, and the two sliding shafts are slidably passed through the two sleeves one-to-one via linear bearings. The two sliding shafts are connected one-to-one to the opposite ends of the mounting base.

[0011] According to some embodiments of the present invention, the driving device is connected to one end of the two sliding shafts opposite to the mounting base, and the driving device can drive the two sliding shafts to move the mounting base.

[0012] According to some embodiments of the present invention, the mounting frame is equipped with a material guiding device, the material guiding device is provided with a material guiding groove, the material guiding groove is connected to the feeding interval, and the material guiding groove is used to guide the packaging film into the feeding interval.

[0013] According to some embodiments of the present invention, a position adjustment device is provided between the material guiding device and the mounting frame, and the position adjustment device is used to adjust the position of the material guiding device along the moving direction of the moving cutter.

[0014] According to some embodiments of the present invention, a waste discharge device is installed on the mounting bracket. The waste discharge device is located on the side of the die away from the moving cutter. The waste discharge device is provided with a waste discharge channel, which is connected to the cutting groove.

[0015] According to some embodiments of the present invention, the moving cutter moves in a horizontal direction, the mounting bracket is mounted on a lifting device, and the lifting device can drive the mounting bracket to rise and fall.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a schematic diagram of the packaging film cutting mechanism (moving cutter in the first position) according to an embodiment of the present invention;

[0019] Figure 2 for Figure 1 An enlarged view of the packaging film cutting mechanism at point A is shown;

[0020] Figure 3 for Figure 1 An exploded view of the cutting assembly of the packaging film cutting mechanism is shown.

[0021] Figure 4 for Figure 1 A cross-sectional view of the cutting assembly (moving cutter in the second position) of the packaging film cutting mechanism is shown.

[0022] Figure 5 for Figure 1 An exploded view of the guide structure of the packaging film cutting mechanism is shown.

[0023] Figure 6 for Figure 1 A cross-sectional view of the packaging film cutting mechanism (when equipped with a material guide device) is shown.

[0024] Figure label:

[0025] Mounting bracket 100, die 210, cutting groove 211, cutting blade 2111, guide groove 212, guide inner wall 2121, clearance groove 2122, transition groove 213, moving cutter 220, guide part 221, guide side 2211, transition section 222, feeding interval 230, drive device 410, servo motor 411, transmission assembly 412, mounting base 420, guide structure 430, sleeve 431, sliding shaft 432, linear bearing 433, material guiding device 500, material guiding groove 510, lifting device 600, waste discharge device 700, waste discharge channel 710. Detailed Implementation

[0026] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0027] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0029] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0030] Reference Figures 1 to 4According to an embodiment of the present invention, a packaging film cutting mechanism includes a mounting frame 100, a cutting assembly, and a driving device 410. The cutting assembly includes a die 210 and a movable cutter 220. The die 210 is mounted on the mounting frame 100 and has a cutting groove 211 adapted to the movable cutter 220. The movable cutter 220 has a first position and a second position. When the movable cutter 220 is in the first position, it is opposite to the cutting groove 211 and a feeding gap 230 is formed between it and the die 210. When the movable cutter 220 is in the second position, it is inserted into the cutting groove 211. The driving device 410 is disposed on the mounting frame 100 and is connected to a mounting base 420. The end of the movable cutter 220 facing away from the die 210 is connected to... Connected to the mounting base 420, the driving device 410 can drive the mounting base 420 to move the movable cutter 220 between a first position and a second position, so that the movable cutter 220 cooperates with the side wall of the cutting groove 211 to cut the packaging film; wherein, a guide structure 430 is provided between the mounting base 420 and the mounting frame 100 for guiding the movement of the mounting base 420, the movable cutter 220 is connected to guide portions 221 at both ends in the width direction, the die 210 has two guide grooves 212, the cutting groove 211 is located between the two guide grooves 212 and communicates with the two guide grooves 212, one end of each of the two guide portions 221 protrudes from the movable cutter 220 and is inserted into the two guide grooves 212 respectively, so as to guide the movement of the movable cutter 220 through the cooperation between the guide portions 221 and the guide grooves 212.

[0031] The packaging film cutting mechanism provided by this utility model has a driving device 410 that can drive the mounting base 420 to move the movable cutter 220 between a first position and a second position, so that the movable cutter 220 cooperates with the side wall of the cutting groove 211 to cut the packaging film. A guide structure 430 is provided between the mounting base 420 and the mounting frame 100 to guide the movement of the mounting base 420. The movement of the movable cutter 220 is also guided between the die 210 and the movable cutter 220 through the cooperation of the guide groove 212 and the guide part 221. This forms a double-sided guiding effect on the movement of the movable cutter 220, which can effectively reduce the offset of the movable cutter 220 relative to the cutting groove 211 of the die 210 during the movement, thereby avoiding the situation of blade jamming or skewed cut, ensuring normal production and cutting quality.

[0032] The two opposite side walls of the cutting groove 211 can be used to cooperate with the moving cutter 220 to cut the packaging film. Thus, the feeding interval 230 between the moving cutter 220 and the die 210 can feed in both directions. In addition, when cutting packaging film with hard layers such as metal foil, the moving cutter 220 will be subjected to greater pressure. At this time, the opposite side walls of the cutting groove 211 can also limit the degree of deformation and displacement of the moving cutter 220 under force, avoid skewed cuts, and ensure cutting quality.

[0033] Reference Figure 2 and Figure 3 , refer to Figure 1 According to some embodiments of the present invention, the moving cutter 220 is integrally formed with two guide portions 221. Thus, while facilitating processing and production, the guide portions 221 themselves can also strengthen the structural strength of the moving cutter 220.

[0034] Reference Figure 2 and Figure 3 According to some embodiments of this utility model, a transition section 222 is formed at the connection between the movable cutter 220 and the guide portion 221. The transition section 222 has rounded corners on both sides in the thickness direction of the movable cutter 220. A transition groove 213 adapted to the transition section 222 is formed at the connection between the cutting groove 211 and the guide groove 212. When the movable cutter 220 is in the second position, the transition section 222 is inserted into the transition groove 213. By setting the transition section 222, the structural strength of the movable cutter 220 can be further improved. At the same time, the movement of the movable cutter 220 can be further guided by the transition section 222 and the transition groove 213, thereby effectively reducing the deformation of the movable cutter 220 during the cutting process.

[0035] Reference Figure 2 and Figure 3 According to some embodiments of the present invention, the guide portion 221 has at least two guide side surfaces 2211, and the guide groove 212 has at least two guide inner walls 2121. The guide side surfaces 2211 fit against the corresponding guide inner walls 2121 to limit the offset of the moving cutter 220 from multiple directions, thereby better guiding the movement of the moving cutter 220.

[0036] The guide inner wall 2121 has an avoidance groove 2122 in the middle position to reduce the area that the guide inner wall 2121 needs to be processed, which facilitates production.

[0037] Reference Figures 2 to 4 According to some embodiments of this utility model, the opposite side walls of the cutting groove 211 near the end of the movable cutter 220 form a cutting edge 2111. The side of the cutting edge 2111 facing the movable cutter 220 is set at an acute angle to the side of the cutting edge 2111 facing the inside of the cutting groove 211. The side of the movable cutter 220 facing the die 210 is set at a right angle to the opposite sides of the movable cutter 220 in the thickness direction. The side of the cutting edge 2111 facing the inside of the cutting groove 211 is perpendicular to the side of the movable cutter 220 facing the die 210. Thus, the cutting edge 2111 on the opposite side walls of the cutting groove 211 can cooperate with the movable cutter 220 to cut the packaging film. The cutting edge 2111 is an acute angle cutter and the movable cutter 220 is a right angle cutter, which can combine the advantages of acute angle cutter and right angle cutter.

[0038] Reference Figure 5According to some embodiments of the present invention, the guide structure 430 includes two sleeves 431 and two sliding shafts 432. The sleeves 431 are mounted on the mounting bracket 100. The two sliding shafts 432 are slidably inserted through the two sleeves 431 through linear bearings 433. The two sliding shafts 432 are connected to the opposite ends of the mounting base 420. With the above configuration, the guide structure 430 has a simple structure and high guiding accuracy and stable guiding.

[0039] It should be noted that the guide structure 430 described above can also be configured in other ways. For example, the guide structure 430 includes a slider and a guide rail, with the slider slidably mounted on the guide rail and the mounting base 420 fixedly mounted on the slider.

[0040] Reference Figure 1 and Figure 6 According to some embodiments of this utility model, the drive device 410 is connected to one end of the two sliding shafts 432 opposite to the mounting base 420, and the drive device 410 can drive the two sliding shafts 432 to move the mounting base 420. With the above arrangement, the power of the drive device 410 is transmitted to the mounting base 420 through the guide structure 430, which can reduce the vibration transmitted by the drive device 410 to the mounting base 420 perpendicular to the moving direction of the moving cutter 220, so that the mounting base 420 can move the moving cutter 220 more stably.

[0041] Reference Figure 1 and Figure 6 In some embodiments, the drive device 410 may include a servo motor 411 and a transmission assembly 412. The transmission assembly 412 may be configured as a crank-connecting rod structure. The servo motor 411 is connected to the slide shaft 432 through the transmission assembly 412 to drive the slide shaft 432 to move.

[0042] Of course, in other embodiments, the drive device 410 may also be configured as a linear motor, linear cylinder or other similar device.

[0043] Reference Figure 6 According to some embodiments of the present invention, the mounting frame 100 is equipped with a material guiding device 500, the material guiding device 500 is provided with a material guiding groove 510, the material guiding groove 510 is connected to the feeding interval 230, and the material guiding groove 510 is used to guide the packaging film into the feeding interval 230, thereby stably and accurately feeding the packaging film into the feeding interval 230.

[0044] According to some embodiments of this utility model, a position adjustment device is provided between the material guiding device 500 and the mounting frame 100. The position adjustment device is used to adjust the position of the material guiding device 500 along the moving direction of the moving cutter 220, so that the material guiding groove 510 of the material guiding device 500 can be aligned with the feeding interval 230 to ensure accurate feeding. The position adjustment device is a commonly used device in the mechanical field, such as various manual adjustment platforms and automatic translation mechanisms; its specific structure will not be described in detail here.

[0045] Reference Figure 1 and Figure 6 According to some embodiments of the present invention, a waste discharge device 700 is installed on the mounting frame 100. The waste discharge device 700 is located on the side of the die 210 away from the moving cutter 220. The waste discharge device 700 is provided with a waste discharge channel 710, which is connected to the cutting groove 211. Thus, the waste generated during the cutting of the packaging film can be discharged more smoothly through the waste discharge device 700, and the waste can be prevented from affecting the product.

[0046] Reference Figure 1 and Figure 6 According to some embodiments of the present invention, the moving cutter 220 moves horizontally, and the mounting bracket 100 is disposed on the lifting device 600. The lifting device 600 can drive the mounting bracket 100 to rise and fall, thereby adjusting the cutting position of the cutting assembly. The lifting device 600 is a commonly used device in the mechanical field, and its specific arrangement will not be detailed here.

[0047] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A packaging film cutting mechanism, characterized in that, include: Mounting bracket (100); The cutting assembly includes a die (210) and a movable cutter (220). The die (210) is mounted on the mounting bracket (100). The die (210) has a cutting groove (211) adapted to the movable cutter (220). The movable cutter (220) has a first position and a second position. When the movable cutter (220) is in the first position, the movable cutter (220) is opposite to the cutting groove (211) and a feeding interval (230) is formed between the movable cutter (220) and the die (210). When the movable cutter (220) is in the second position, the movable cutter (220) is inserted into the cutting groove (211). A drive device (410) is disposed on the mounting frame (100). The drive device (410) is connected to a mounting base (420). The end of the movable cutter (220) facing away from the die (210) is connected to the mounting base (420). The drive device (410) can drive the mounting base (420) to move the movable cutter (220) between the first position and the second position, so that the movable cutter (220) cooperates with the side wall of the cutting groove (211) to cut the packaging film. The mounting base (420) and the mounting bracket (100) are provided with a guide structure (430) for guiding the movement of the mounting base (420). The movable cutter (220) is connected to guide portions (221) at both ends in the width direction. The die (210) has two guide grooves (212). The cutting groove (211) is located between the two guide grooves (212) and communicates with the two guide grooves (212). One end of each of the two guide portions (221) protrudes from the movable cutter (220) and is inserted into the two guide grooves (212) in a corresponding manner, so as to guide the movement of the movable cutter (220) through the cooperation between the guide portions (221) and the guide grooves (212).

2. The packaging film cutting mechanism according to claim 1, characterized in that, The moving cutter (220) is integrally formed with the two guide portions (221).

3. The packaging film cutting mechanism according to claim 2, characterized in that, A transition section (222) is formed at the connection between the movable cutter (220) and the guide (221). The transition section (222) has rounded corners on both sides in the thickness direction of the movable cutter (220). A transition groove (213) adapted to the transition section (222) is formed at the connection between the cutting groove (211) and the guide groove (212). When the movable cutter (220) is in the second position, the transition section (222) is inserted into the transition groove (213).

4. The packaging film cutting mechanism according to claim 1, characterized in that, The guide portion (221) has at least two guide sides (2211), and the guide groove (212) has at least two guide inner walls (2121). The guide sides (2211) are in contact with the corresponding guide inner walls (2121).

5. A packaging film cutting mechanism according to claim 1, characterized in that, The opposite side walls of the cutting groove (211) near the end of the movable cutter (220) form a cutting edge (2111). The side of the cutting edge (2111) facing the movable cutter (220) is set at an acute angle to the side of the cutting edge (2111) facing the inside of the cutting groove (211). The side of the cutting edge (2111) facing the inside of the cutting groove (211) is perpendicular to the side of the movable cutter (220) facing the die (210). The side of the movable cutter (220) facing the die (210) is set at a right angle to the opposite sides of the movable cutter (220) in the thickness direction.

6. A packaging film cutting mechanism according to claim 1, characterized in that, The guide structure (430) includes two sleeves (431) and two sliding shafts (432). The sleeves (431) are mounted on the mounting bracket (100). The two sliding shafts (432) are slidably inserted through the two sleeves (431) one by one through linear bearings (433). The two sliding shafts (432) are connected to the opposite ends of the mounting base (420) one by one.

7. A packaging film cutting mechanism according to claim 6, characterized in that, The drive device (410) is connected to one end of the two slide shafts (432) away from the mounting base (420), and the drive device (410) can drive the two slide shafts (432) to move the mounting base (420).

8. A packaging film cutting mechanism according to claim 1, characterized in that, The mounting frame (100) is equipped with a material guiding device (500), which has a material guiding groove (510) that is connected to the feeding interval (230). The material guiding groove (510) is used to guide the packaging film into the feeding interval (230). A position adjustment device is provided between the material guiding device (500) and the mounting frame (100), which is used to adjust the position of the material guiding device (500) along the moving direction of the moving cutter (220).

9. A packaging film cutting mechanism according to claim 1, characterized in that, A waste discharge device (700) is installed on the mounting bracket (100). The waste discharge device (700) is located on the side of the die (210) away from the moving cutter (220). The waste discharge device (700) is provided with a waste discharge channel (710), which is connected to the cutting groove (211).

10. A packaging film cutting mechanism according to claim 1, characterized in that, The moving cutter (220) moves in a horizontal direction, and the mounting bracket (100) is mounted on the lifting device (600), which can drive the mounting bracket (100) to rise and fall.

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