A cutting device for processing food plastic packaging bags

Abstract

This utility model relates to a shearing device for processing food plastic packaging bags, belonging to the field of packaging bag processing technology. The device includes a machine body, a worktable, a shearing frame, and a flattening assembly. A worktable is installed on the side of the machine body, and vertical frames are symmetrically arranged on the top outer wall of the machine body. A shearing frame is connected between the two sets of frames, and the shearing frame has an inverted U-shaped internal structure. A flattening assembly is installed on the side of the shearing frame and is installed inside the machine body. In use, the device employs a combined drive structure of "lead screw-slider-electric push rod," achieving stable operation and precise cutting of the cross-cutting blade. A micro-motor drives the lead screw to rotate, and with the guiding action of the T-shaped blocks on both sides of the slider and the T-shaped grooves on the inner wall of the shearing frame, the slider and the cross-cutting blade below can move stably in the horizontal direction. This rigid transmission structure effectively resists cutting resistance and avoids blade vibration.

Description

Technical Field

[0001] This utility model relates to the field of packaging bag processing technology, and in particular to a shearing device for processing food plastic packaging bags. Background Technology

[0002] In the complete production process of food plastic packaging bags, cutting as a subsequent process refers to the process of cutting and bag making of large rolls of printed, laminated, and cured plastic film master rolls through automated processing equipment, ultimately forming individual packaging bags.

[0003] Existing food plastic packaging bag processing shearing devices are upper and lower blades, and the cutting force relies on a single drive source. This can easily lead to uneven cutting force due to concentrated force points and insufficient drive stability. Especially when cutting thicker or tougher food plastic films, the blades are prone to vibration, resulting in rough cuts and film tearing, which affects the sealing performance and appearance quality of the packaging bags.

[0004] Therefore, this utility model proposes a shearing device for processing food plastic packaging bags. Utility Model Content

[0005] Therefore, in order to overcome the problem of poor cutting effect of existing food plastic packaging bag processing shearing devices.

[0006] The technical solution of this utility model is: a shearing device for processing food plastic packaging bags, comprising a machine body, a workbench, a shearing frame and a flattening component, characterized in that: a workbench is installed on the side of the machine body, vertical frames are symmetrically arranged on the top outer wall of the machine body, and a shearing frame is connected between the two sets of frames, and the shearing frame is configured with an inverted U-shaped structure inside, and a flattening component is installed on the side of the shearing frame, and the flattening component is installed inside the machine body.

[0007] Preferably, the flattening assembly includes an upper roller and a lower roller; the upper roller and the lower roller are rotatably connected between the inner walls of the two sides of the machine body, and transmission gears are installed on the side ends of the upper roller and the lower roller, and the two sets of transmission gears are meshed; the outer surfaces of the upper roller and the lower roller are provided with two sets of anti-slip textures in opposite directions.

[0008] Preferably, rotating parts are symmetrically arranged on the bottom outer wall of the workbench and the side outer wall of the machine body. A limit push rod is rotatably installed on the outer side of one set of rotating parts, and a hydraulic rod is rotatably installed on the outer side of the second set of rotating parts. The output end of the hydraulic rod is connected to the limit push rod. A limit frame is fixedly installed on the top outer wall of the workbench.

[0009] Preferably, the inner walls of the two sides of the housing near the limiting frame of the machine body are symmetrically provided with support members, and the side end of the worktable is hinged to the middle position of the two sets of support members.

[0010] Preferably, a lead screw is rotatably connected between the inner walls of both sides of the shearing frame, a micro motor is fixedly installed on the outer side wall of the shearing frame, and the output end of the micro motor is connected to the lead screw. A slider is installed on the outside of the lead screw, and an electric push rod is fixedly installed on the bottom outer wall of the slider. A cross-cutting blade is fixedly installed on the extended end of the electric push rod.

[0011] Preferably, the outer walls of the slider are symmetrically provided with limiting T-shaped blocks, and the inner walls of the shearing frame are correspondingly provided with limiting T-shaped grooves for sliding installation of the limiting T-shaped blocks.

[0012] Preferably, a limiting strip is fixedly installed on the outer wall of the top shell of the machine body, and a transverse groove is opened on the outer wall of the top of the limiting strip, and the transverse groove is located directly below the transverse cutting blade.

[0013] The beneficial effects of this utility model are: 1. When in use, this shearing device for processing food plastic packaging bags adopts a combined drive structure of "lead screw-slider-electric push rod" to achieve stable operation and precise cutting of the cross-cutting blade. The micro motor drives the lead screw to rotate, and with the guiding effect of the T-shaped blocks on both sides of the slider and the T-shaped grooves on the inner wall of the shearing frame, it can drive the slider and the cross-cutting blade below to move stably in the horizontal direction. This rigid transmission structure can effectively resist cutting resistance and avoid blade vibration. At the same time, the electric push rod independently controls the up and down movement of the cross-cutting blade, and the cutting force output is more uniform and stable.

[0014] 2. When the shearing device for processing food plastic packaging bags is in use, the upper and lower rollers rotate synchronously in opposite directions through meshing transmission gears. This can squeeze and flatten the film before it enters the shearing station, balance the local tension of the film to eliminate wrinkles, and at the same time, the two sets of anti-slip textures on the roller surface in opposite directions can significantly increase the friction with the film, avoiding lateral deviation during film conveying. This design ensures that the film always maintains a flat and accurate conveying trajectory, so that the cross-cutting blade in the subsequent shearing process can accurately act on the preset cutting position, greatly reducing problems such as "skewed cutting" and "off-center cutting". Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 The diagram shown is a three-dimensional structural schematic of the present invention. Figure 2 This utility model is shown. Figure 1 Enlarged 3D structural diagram at point A; Figure 3 The diagram shown is a three-dimensional structural diagram of the shear frame installation of this utility model; Figure 4 The diagram shown is a three-dimensional structural diagram of the installation of the upper roller and the lower roller of this utility model. Figure 5 The diagram shown is a cross-sectional perspective view of the shearing frame of this utility model.

[0017] Explanation of reference numerals in the attached drawings: 1. Machine body; 2. Upper roller; 3. Lower roller; 4. Shearing frame; 5. Lead screw; 6. Slider; 7. Electric push rod; 8. Cross-cutting blade; 9. Worktable; 10. Limiting push rod; 11. Hydraulic rod; 12. Rotating component; 13. Limiting frame; 14. Limiting strip; 15. Flattening assembly. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this specification are for illustrative purposes only and do not represent the only possible implementation.

[0020] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0021] Please see Figures 1-5This utility model provides a technical solution: a shearing device for processing food plastic packaging bags, including a machine body 1, a workbench 9, a shearing frame 4 and a flattening component 15. The workbench 9 is installed on the side of the machine body 1, and vertical frames are symmetrically arranged on the outer wall of the top of the machine body 1. The shearing frame 4 is connected between the two sets of frames, and the shearing frame 4 is configured with an inverted U-shaped structure inside. The flattening component 15 is installed on the side of the shearing frame 4 and is installed inside the machine body 1.

[0022] The flattening assembly 15 includes an upper roller 2 and a lower roller 3; the upper roller 2 and the lower roller 3 are rotatably connected between the inner walls of both sides of the machine body 1, and transmission gears are installed on the side ends of both the upper roller 2 and the lower roller 3, and the two sets of transmission gears are meshed. The outer surfaces of the upper roller 2 and the lower roller 3 are provided with two sets of anti-slip textures in opposite directions. The anti-slip texture here increases friction to prevent the food plastic packaging bag from shifting during transport. The length of the T-groove is greater than the length of the cross-cutting blade 8 below, ensuring that the cross-cutting blade 8 can cut the food packaging bag film laterally, making the cut more thorough.

[0023] Rotating components 12 are symmetrically arranged on the bottom outer wall of the workbench 9 and the side outer wall of the machine body 1. A limit push rod 10 is rotatably installed on the outer side of one set of rotating components 12, and a hydraulic rod 11 is rotatably installed on the outer side of the second set of rotating components 12. The output end of the hydraulic rod 11 is connected to the limit push rod 10. A limit frame 13 is fixedly installed on the top outer wall of the workbench 9.

[0024] The inner walls of the two sides of the body 1 near the limit frame 13 are symmetrically provided with support members, and the side end of the worktable 9 is hinged to the middle position of the two sets of support members.

[0025] A lead screw 5 is rotatably connected between the inner walls of both sides of the shearing frame 4. A micro motor is fixedly installed on the outer side wall of the shearing frame 4, and the output end of the micro motor is connected to the lead screw 5. A slider 6 is installed on the outside of the lead screw 5, and an electric push rod 7 is fixedly installed on the outer wall of the bottom end of the slider 6. A cross-cutting blade 8 is fixedly installed on the extended end of the electric push rod 7.

[0026] The two outer walls of the slider 6 are symmetrically provided with limiting T-shaped blocks, and the two inner walls of the shearing frame 4 are correspondingly provided with limiting T-shaped grooves for sliding installation of the limiting T-shaped blocks.

[0027] A limiting strip 14 is fixedly installed on the outer wall of the top shell of the body 1. A transverse cutting groove is provided on the outer wall of the top of the limiting strip 14, and the transverse cutting groove is located directly below the transverse cutting blade 8.

[0028] Working principle: See Figures 1-5 As shown, the specific method of adjusting the position of the food plastic packaging bag and feeding it into the side of the upper roller 2 is a conventional operating technique. The attached diagram has been shown and will not be described in detail here. It should be noted that the two sets of gears on the sides of the upper roller 2 and the lower roller 3 are driven by the existing motor assembly, which will not be described in detail here. Under the driving action of the control motor, the two sets of gears rotate in opposite directions, which will synchronously drive the upper roller 2 and the lower roller 3 to rotate in opposite directions. At the same time, the micro motor and the electric push rod 7 are activated. After the micro motor is activated, it will automatically drive the lead screw 5 to rotate, which will then drive the slider 6 to move. Here, due to the limiting effect of the limiting T-block and the limiting T-slot, when the lead screw 5 rotates, it will only drive the slider 6 to achieve horizontal sliding trajectory movement. When the electric push rod 7 is activated, its output end extends and will automatically drive the cross-cutting blade 8 to move up and down. When the food plastic packaging bag is fed to the side of the upper roller 2 through the existing conveying assembly, the food plastic packaging bag will be automatically pushed forward by the opposing rotation of the upper roller 2 and the lower roller 3. Then, with the up and down movement of the cross-cutting blade 8, the cutting process of the food plastic packaging bag can be automatically completed. Here, the cross-cutting blade 8 is designed to move laterally during the cutting process. This rigid transmission can effectively resist the cutting resistance and avoid the cross-cutting blade 8 from vibrating. It should also be noted that the cross-cutting blade 8 moves in a small trajectory under the transmission action of the lead screw 5 and will never deviate from the conveying range of the food plastic packaging bag. The cross-cutting groove built into the limiting strip 14 here serves to limit and accommodate the cross-cutting blade 8. The cut food plastic packaging bags are then sent to the top of the workbench 9. Simultaneously, the hydraulic rod 11 is activated. After the hydraulic rod 11 is activated, its output end extends and automatically pushes the limit push rod 10 forward. Here, the two sets of rotating parts 12 provide rotational support points for the deflection of the hydraulic rod 11 and the limit push rod 10. At the same time, under the action of the limit push rod 10, the workbench 9 moves up and down with the two sets of support parts to achieve a vertical deflection trajectory, so that the cut food plastic packaging bags above the workbench 9 automatically slide down to the collection area by inertia. Here, the setting of the limit frame 13 has a limiting effect on the food plastic packaging bags to regulate their falling range.

[0029] It should be noted that the aforementioned control motors and micro motors can be powered using existing operating techniques, whether by using power supply components or external wires. These are all conventional operating techniques and will not be described in detail here.

[0030] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cutting device for processing food plastic packaging bags, comprising a machine body (1), a workbench (9), a cutting frame (4) and a flattening assembly (15), characterized in that: The machine body (1) is equipped with a workbench (9) on its side. The top outer wall of the machine body (1) is symmetrically provided with vertical frames, and a shearing frame (4) is connected between the two sets of frames. The shearing frame (4) is configured with an inverted U-shaped structure inside. A flattening component (15) is installed on the side of the shearing frame (4), and the flattening component (15) is installed inside the machine body (1). A lead screw (5) is rotatably connected between the inner walls of both sides of the shearing frame (4). A micro motor is fixedly installed on the outer side wall of the shearing frame (4), and the output end of the micro motor is connected to the lead screw (5). A slider (6) is installed on the outside of the lead screw (5), and an electric push rod (7) is fixedly installed on the outer wall of the bottom end of the slider (6). A cross-cutting blade (8) is fixedly installed on the extended end of the electric push rod (7).

2. The shearing device for processing food plastic packaging bags according to claim 1, characterized in that: The flattening assembly (15) includes an upper roller (2) and a lower roller (3); the upper roller (2) and the lower roller (3) are rotatably connected between the inner walls of both sides of the machine body (1), and the upper roller (2) and the lower roller (3) are both equipped with transmission gears on their side ends, and the two sets of transmission gears are meshed. The outer surfaces of the upper roller (2) and the lower roller (3) are provided with two sets of anti-slip textures in opposite directions.

3. The shearing device for processing plastic food packaging bags according to claim 1, characterized in that: Rotating components (12) are symmetrically arranged on the bottom outer wall of the workbench (9) and the side outer wall of the machine body (1). A set of rotating components (12) has a limit push rod (10) rotatably installed on the outer side. A hydraulic rod (11) is rotatably installed on the outer side of the two sets of rotating components (12), and the output end of the hydraulic rod (11) is connected to the limit push rod (10). A limit frame (13) is fixedly installed on the top outer wall of the workbench (9).

4. The shearing device for processing plastic food packaging bags according to claim 3, characterized in that: The inner walls of the two sides of the body (1) near the limiting frame (13) are symmetrically provided with support members, and the side end of the worktable (9) is hinged to the middle position of the two sets of support members.

5. The shearing device for processing plastic food packaging bags according to claim 1, characterized in that: The slider (6) has symmetrically arranged limit T-shaped blocks on both outer walls, and the shearing frame (4) has corresponding limit T-shaped grooves on both inner walls for sliding installation of the limit T-shaped blocks.

6. The shearing device for processing plastic food packaging bags according to claim 1, characterized in that: A limiting strip (14) is fixedly installed on the outer wall of the top shell of the body (1). A transverse cutting groove is provided on the outer wall of the top of the limiting strip (14), and the transverse cutting groove is located directly below the transverse cutting blade (8).

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