Cutter device of bag making machine for food packaging bag processing

Abstract

The utility model discloses a cutter device of a bag making machine for food packaging bag processing. The cutter device comprises a machine frame, and a feeding mechanism, a conveying belt before slitting, a slitting mechanism and a conveying belt after slitting are sequentially arranged on the machine frame. The slitting mechanism comprises a cutting board which is fixedly connected with the rack and is obliquely arranged, guide plates are arranged on the front side and the rear side of the cutting board, the upper guide plate is matched with the slitting front conveying belt, and the lower guide plate is matched with the slitting rear conveying belt; a slitting air cylinder is arranged on the upper portion of the cutter cutting board in a matched mode, a mounting plate is fixedly connected to the end of an extending shaft of the slitting air cylinder, a slitting blade is arranged on the lower portion of the mounting plate, and downward pressing assemblies are arranged on the front side and the rear side of the slitting blade. And the materials can be tightly fixed on the cutting board in the cutting process, so that the materials are prevented from moving or wrinkling in the cutting process, and the slitting precision and quality can be guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of packaging bag processing technology, and specifically relates to a cutting device for a bag making machine for food packaging bag processing. Background Technology

[0002] Food packaging bags are a type of packaging design. In daily life, food packaging bags were created to facilitate the preservation and storage of food. Food packaging bags refer to thin film containers that come into direct contact with food and are used to hold and protect food. Food packaging bags should be produced using food-grade plastic film and are generally composite material bags with two or more layers. With social development, the application of cutting machines for food packaging bag processing has become increasingly widespread.

[0003] Most food packaging bag cutting machines on the market cannot fix the cut portion of the packaging bag roll during the cutting process, which can easily lead to inaccurate size of the cut packaging bags and uneven cut edges, affecting the appearance and quality of the packaging bags.

[0004] Therefore, this application provides a cutting device for a bag-making machine for processing food packaging bags, which aims to improve the dimensional accuracy and cutting edge quality of the packaged bag rolls after cutting. Utility Model Content

[0005] This utility model provides a cutting device for a bag-making machine for food packaging bag processing, aiming to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A cutting device for a bag-making machine for food packaging bags includes: a frame, on which a feeding mechanism, a pre-cutting conveyor belt, a cutting mechanism, and a post-cutting conveyor belt are arranged sequentially according to the material processing sequence.

[0008] The slitting mechanism includes: a knife anvil plate fixedly connected to the frame and inclined; guide plates are provided on both the front and rear sides of the knife anvil plate; the upper guide plate cooperates with the pre-slitting conveyor belt; and the lower guide plate cooperates with the post-slitting conveyor belt.

[0009] A slitting cylinder is fitted on the upper part of the cutting board. A mounting plate is fixedly connected to the end of the extended shaft of the slitting cylinder. A slitting blade is provided on the lower part of the mounting plate. Pressing components are provided on the front and rear sides of the slitting blade.

[0010] Furthermore, the pressing assembly includes a mounting frame and a pressure roller, wherein the mounting frame is a channel steel structure with an opening at the bottom and is arranged across the knife and anvil plate;

[0011] The upper sidewall of the mounting frame is fixedly connected to the mounting plate by a connecting rod, and a clearance groove is provided in the middle to avoid the cutting blade. Two pressure rollers are provided between the two left and right sidewalls of the mounting frame, and the pressure rollers are distributed on the front and rear sides of the cutting blade.

[0012] Two sets of slide rails are respectively provided on the left and right side walls of the mounting bracket. A slider is slidably connected to the slide rail. The pressure roller is rotatably connected to the slider. A downward pressure spring is provided between the slider and the upper side wall of the slide rail.

[0013] Furthermore, the upper side wall of the slide rail is threaded with an adjusting bolt, the lower end of which abuts against the upper end of the compression spring to adjust the pre-compression force of the compression spring.

[0014] Furthermore, the lower side wall of the mounting plate is provided with a mounting groove for mounting the slitting blade.

[0015] Furthermore, the cutting board is provided with a cutting groove, which is used to cooperate with the cutting blade.

[0016] Furthermore, the feeding mechanism is a roll material feeding mechanism.

[0017] Compared with the prior art, the present invention has the following technical effects:

[0018] 1. The cutting device of the bag making machine for processing food packaging bags according to this utility model has a pressing component set on the front and rear sides of the cutting blade. Under the action of the pressing component, the material can be firmly fixed on the cutting board during the cutting process, avoiding the material from moving or wrinkling during cutting. This helps to ensure the accuracy and quality of cutting, so that the edges of the cut food packaging bags are neat and the size is accurate.

[0019] 2. The cutting device of the bag-making machine for food packaging bags described in this utility model features an inclined anvil plate and guide plates on both the front and rear sides. This allows the material to slide naturally under the force of gravity and the push of the conveyor belt, reducing material jamming during transport. The upper guide plate works in conjunction with the pre-cutting conveyor belt to accurately guide the material onto the anvil plate, ensuring accurate positioning during cutting. The lower guide plate works in conjunction with the post-cutting conveyor belt, allowing the cut material to be smoothly transferred to the subsequent conveyor belt, ensuring the continuity of the cutting process. Attached Figure Description

[0020] Figure 1 This is an overall schematic diagram of the cutting device of a bag-making machine for processing food packaging bags according to the present invention;

[0021] Figure 2This is a schematic diagram of the cutting mechanism of the cutting device of a bag making machine for processing food packaging bags according to the present invention;

[0022] Figure 3 This is a schematic diagram of the pressing component of the cutting device of a bag-making machine for processing food packaging bags according to this utility model.

[0023] In the picture:

[0024] 1. Material supply mechanism;

[0025] 2. Conveyor belt before slitting;

[0026] 3. Slitting mechanism; 301. Cutting board; 302. Guide plate; 303. Cutting groove; 304. Slitting cylinder; 305. Mounting plate; 306. Mounting groove; 307. Slitting blade; 308. Connecting rod; 309. Mounting bracket; 310. Slider; 311. Pressure roller; 312. Downward pressure spring; 313. Adjusting bolt;

[0027] 4. Conveyor belt after slitting;

[0028] 5. Packaging bag rolls. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to specific embodiments of this application and the accompanying drawings.

[0030] like Figure 1-3 As shown, a cutting device for a bag making machine for food packaging bag processing includes: a frame, on which a feeding mechanism 1, a pre-cutting conveyor belt 2, a cutting mechanism 3, and a post-cutting conveyor belt 4 are arranged in sequence according to the material processing order;

[0031] The slitting mechanism 3 includes: a knife and anvil plate 301 fixedly connected to the frame and inclined; guide plates 302 are provided on both the front and rear sides of the knife and anvil plate 301; the upper guide plate 302 cooperates with the pre-slitting conveyor belt 2; and the lower guide plate 302 cooperates with the post-slitting conveyor belt 4.

[0032] A slitting cylinder 304 is fitted on the upper part of the cutting board 301. A mounting plate 305 is fixedly connected to the end of the extension shaft of the slitting cylinder 304. A slitting blade 307 is provided on the lower part of the mounting plate 305. Pressing components are provided on the front and rear sides of the slitting blade 307.

[0033] By providing pressing components on both the front and rear sides of the slitting blade 307, the packaging bag roll 5 can be tightly fixed on the cutting anvil 301 during the cutting process under the action of the pressing components, which prevents the packaging bag roll 5 from moving or wrinkling during cutting. This helps to ensure the accuracy and quality of slitting, so that the cut packaging bag roll 5 has neat edges and accurate dimensions.

[0034] With the cutting anvil 301 tilted and guide plates 302 on both the front and rear sides, the packaging bag roll 5 can slide down naturally under the force of gravity and the push of the conveyor belt, reducing material jamming during the conveying process. The upper guide plate 302 cooperates with the pre-cutting conveyor belt 2 to accurately guide the packaging bag roll 5 onto the cutting anvil 301, ensuring accurate positioning of the packaging bag roll 5 during cutting; the lower guide plate 302 cooperates with the post-cutting conveyor belt 4, allowing the cut packaging bag roll 5 to be smoothly transferred to the subsequent conveyor belt, ensuring the continuity of the cutting process.

[0035] like Figure 2-3 As shown, the pressing assembly includes a mounting bracket 309 and a pressure roller 311. The mounting bracket 309 is a channel steel structure with an opening at the bottom and is arranged across the knife and anvil plate 301.

[0036] The upper sidewall of the mounting bracket 309 is fixedly connected to the mounting plate 305 by a connecting rod 308, and a clearance groove is provided in the middle to avoid the cutting blade 307. Two pressure rollers 311 are provided between the two left and right sidewalls of the mounting bracket 309, and the pressure rollers 311 are distributed on the front and rear sides of the cutting blade 307.

[0037] Two sets of slide rails are respectively provided on the left and right side walls of the mounting bracket 309. A slider 310 is slidably connected to the slide rail. The pressure roller 311 is rotatably connected to the slider 310. A downward pressure spring 312 is provided between the slider 310 and the upper side wall of the slide rail.

[0038] The mounting bracket 309 adopts a channel steel structure with an opening at the bottom and spans the cutting anvil 301. This structural design provides a stable support foundation for the pressing assembly. The channel steel structure itself has high strength and stability, and can withstand various forces generated during the slitting process, ensuring that the pressing assembly will not shake or shift during operation. The clearance groove in the middle of the upper side wall of the mounting bracket 309 allows the slitting blade 307 to pass smoothly for cutting operations, avoiding mutual interference between the pressing assembly and the slitting blade 307, ensuring the smooth progress of the cutting process, and enabling the slitting blade to accurately cut the packaging bag roll 5.

[0039] Two pressure rollers 311 are distributed on the front and rear sides of the slitting blade 307. During the slitting process, the pressure rollers 311 can contact the packaging bag roll 5 before the slitting blade 307 and press down to fix it. This can effectively prevent the packaging bag roll 5 from slipping or wrinkling during cutting, ensuring the cutting accuracy and quality, and making the cut packaging bag roll 5 neat and sized accurately.

[0040] The pressure roller 311 is slidably connected to the slide rail on the mounting frame via the slider 310, and a downward pressure spring 312 is provided between the slider 310 and the upper side wall of the slide rail. When the pressing assembly moves downward with the slitting cylinder 304, the pressure roller 311 first contacts the packaging bag roll 5. As the pressure increases, the slider 310 slides upward on the slide rail and compresses the downward pressure spring 312, so that the slitting blade 307 slits the packaging bag roll 5, thereby simplifying the structure of the slitting mechanism and allowing the pressing process and the slitting process to use a single drive component.

[0041] like Figure 3 As shown, the upper side wall of the slide rail is threaded with an adjusting bolt 313. The lower end of the adjusting bolt 313 abuts against the upper end of the compression spring 312 to adjust the pre-compression force of the compression spring 312.

[0042] like Figure 2 As shown, the lower sidewall of the mounting plate 305 is provided with a mounting groove 306, which is used to mount the slitting blade 307. In one specific embodiment, the slitting blade 307 is fixed in the mounting groove 306 by a locking bolt.

[0043] like Figure 2 As shown, the cutting board 301 has a cutting groove 303, which is used to cooperate with the slitting blade 307. The depth and width of the cutting groove 303 are adapted to the slitting blade 307, ensuring that the blade completely cuts into the packaging bag roll 5, achieving a thorough cut of the packaging bag roll 5. Especially for some thicker or harder packaging bag materials, the cutting groove 303 can prevent the blade from bending due to the resistance of the material or failing to completely cut the material, ensuring the smooth progress of the cutting work.

[0044] like Figure 1 As shown, the feeding mechanism 1 is a roll material feeding mechanism. The roll material feeding mechanism enables continuous material supply. Compared to single-sheet feeding or other discontinuous feeding methods, the material is in roll form, allowing for a longer continuous supply of packaging bag material to the bag-making machine, significantly reducing downtime caused by material changes. This enables the bag-making machine to maintain high operating efficiency and achieve long-term continuous production, making it particularly suitable for large-scale food packaging bag production scenarios. The roll material feeding mechanism is a mature existing technology, and its specific structure will not be described in detail here.

[0045] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present utility model, and these all fall within the protection scope of the present utility model.

Claims

1. A cutting device for a bag-making machine used for processing food packaging bags, characterized in that, include: The frame is provided with a feeding mechanism (1), a pre-slitting conveyor belt (2), a slitting mechanism (3), and a post-slitting conveyor belt (4) arranged in sequence according to the material processing order. The slitting mechanism (3) includes: a knife anvil (301) fixedly connected to the frame and inclined; guide plates (302) are provided on both the front and rear sides of the knife anvil (301); the upper guide plate (302) cooperates with the pre-slitting conveyor belt (2); and the lower guide plate (302) cooperates with the post-slitting conveyor belt (4). A slitting cylinder (304) is provided on the upper part of the cutting board (301). A mounting plate (305) is fixedly connected to the end of the extension shaft of the slitting cylinder (304). A slitting blade (307) is provided on the lower part of the mounting plate (305). Pressing components are provided on the front and rear sides of the slitting blade (307).

2. The cutting device of a bag-making machine for processing food packaging bags according to claim 1, characterized in that, The pressing assembly includes a mounting bracket (309) and a pressure roller (311). The mounting bracket (309) is a channel steel structure with an opening at the bottom and is arranged across the knife and anvil plate (301). The upper sidewall of the mounting bracket (309) is fixedly connected to the mounting plate (305) by a connecting rod (308), and a clearance groove for avoiding the cutting blade (307) is provided in the middle. Two pressure rollers (311) are provided between the two left and right sidewalls of the mounting bracket (309), and the pressure rollers (311) are distributed on the front and rear sides of the cutting blade (307). Two sets of slide rails are respectively provided on the left and right side walls of the mounting bracket (309). A slider (310) is slidably connected on the slide rail. The pressure roller (311) is rotatably connected to the slider (310). A downward pressure spring (312) is provided between the slider (310) and the upper side wall of the slide rail.

3. The cutting device of a bag-making machine for processing food packaging bags according to claim 2, characterized in that, The upper side wall of the slide rail is threaded with an adjusting bolt (313), the lower end of which abuts against the upper end of the compression spring (312) to adjust the pre-compression force of the compression spring (312).

4. The cutting device of a bag-making machine for processing food packaging bags according to claim 1, characterized in that, The mounting plate (305) has a mounting groove (306) on its lower side wall, which is used to mount the slitting blade (307).

5. The cutting device of a bag-making machine for processing food packaging bags according to claim 1, characterized in that, The cutting board (301) is provided with a cutting groove (303), which is used to cooperate with the cutting blade (307).

6. The cutting device of a bag-making machine for processing food packaging bags according to claim 1, characterized in that, The feeding mechanism (1) is a roll material feeding mechanism.

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