Automatic cutting device for producing food packaging bags

Abstract

The utility model discloses an automatic slitting device for producing food packaging bags, wherein a slitting table is installed on the upper surface of a bottom plate, cleaning roller groups are arranged on both sides of the upper surface of the bottom plate, a mounting frame is installed on the upper surface of the bottom plate between the two cleaning roller groups, an electric push rod is installed on the top of the mounting frame, and a slitting knife is arranged at the end of the telescopic end of the electric push rod; a first screw is rotatably connected between the inner walls of both sides of the mounting frame, a moving block is threadedly connected on the outer surface of the first screw, and a motor is installed on the outer surface of the mounting frame. The utility model drives the first screw to rotate through a motor, and can drive the moving block and the grindstone to move along the length direction of the first screw. The V-shaped notch of the grindstone just corresponds to the blade of the slitting knife and generates friction, thereby realizing the purpose of automatically grinding the slitting knife, without the need for manual grinding and disassembly of the slitting knife, which is not only safer to operate, but also more efficient and conducive to maintenance work.

Description

Technical Field

[0001] The utility model relates to the technical field of food packaging equipment, in particular to an automatic cutting device for producing food packaging bags. Background Art

[0002] Food packaging bags are bag-shaped containers used to package food, usually made of plastic, paper, aluminum foil and other materials. Their main function is to protect food from external contamination, prolong the shelf life of food, and facilitate carrying and storage. In the market, we can see various types of food packaging bags, such as fresh-keeping bags, vacuum bags, three-dimensional bags, etc. They have different designs and functions and are suitable for packaging different types of food. Cutting devices are required in the production process of packaging bags.

[0003] The Chinese patent publication number CN218140237U discloses a slitting device for producing environmentally friendly packaging bags. The device passes the packaging bag through the middle of two cleaning rollers, which brush the surface of the packaging bag to remove debris and dust attached to the surface of the packaging bag, keeping the packaging bag clean and improving the quality of the packaging bag.

[0004] As the main component of the slitting device, the sharpness of the slitting knife directly affects the slitting effect. However, after a period of use, the cutting edge of the slitting knife will inevitably wear out, which can easily lead to uneven cuts, affecting the appearance and quality of the packaging bag, and may even cause impurities or debris to form at the cutting site, affecting the hygiene and safety of the food packaging bag. Therefore, the slitting knife needs to be polished regularly. However, the traditional method requires first removing the slitting knife and then reinstalling it after polishing. Not only is the operation more cumbersome, but the slitting knife in the above patent is installed with a connecting pin, which takes a lot of time to disassemble and assemble, affecting work efficiency. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides an automatic cutting device for producing food packaging bags.

[0006] The utility model provides the following technical solution: an automatic slitting device for producing food packaging bags, comprising a base plate, a slitting table mounted on the upper surface of the base plate, cleaning roller groups disposed on both sides of the upper surface of the base plate, a mounting frame mounted on the upper surface of the base plate between the two cleaning roller groups, an electric push rod mounted on the top of the mounting frame, a slitting knife disposed at the end of the telescopic end of the electric push rod, a first screw rotatably connected between the inner walls of the mounting frame, a moving block threadedly connected to the outer surface of the first screw, a motor mounted on the outer surface of the mounting frame, the output shaft of the motor connected to the first screw, a limit rod connected between the inner walls of the mounting frame, and the moving block slidably mounted on the limit rod, a mounting block disposed on the outer side of the moving block, a whetstone disposed on the outer side of the mounting block, and the whetstone disposed directly below the slitting knife.

[0007] Preferably, a collection box is installed on the side surface of the mounting block, and the whetstone is installed on the upper surface of the collection box, a cylinder is installed on the outer surface of the collection box, a filter is provided at the connection between the cylinder and the collection box, a fan is provided inside the cylinder, and suction holes are provided on both sides of the upper surface of the collection box in the length direction of the whetstone.

[0008] Preferably, a lifting plate is installed at the end of the telescopic end of the electric push rod, and the slitting knife is arranged on the lower side of the lifting plate, and two pressing rods are installed on both sides of the lifting plate.

[0009] Preferably, guide rods are installed on both sides of the upper surface of the lifting plate in the length direction, and sliding sleeves are installed on both sides of the upper surface of the mounting frame, and the guide rods are slidably installed inside the sliding sleeves.

[0010] Preferably, a sliding groove is provided on the side surface of the slider, and a slider is installed on the side surface of the mounting block. The slider is arranged in the sliding groove, and side blocks are installed at the upper and lower ends of the side surface of the slider. A second screw is rotatably connected between the two side blocks, and the second screw passes through the interior of the mounting block and is threadedly connected to it.

[0011] Preferably, a dust screen is provided at one end of the cylinder away from the collection box, and both the dust screen and the filter are made of stainless steel.

[0012] Compared with the existing technology, the beneficial effects of the utility model are:

[0013] (1) The utility model is provided with a slitting table on the upper surface of a base plate, cleaning roller groups are provided on both sides of the upper surface of the base plate, a mounting frame is provided on the upper surface of the base plate between the two cleaning roller groups, an electric push rod is provided on the top of the mounting frame, and a slitting knife is provided at the end of the telescopic end of the electric push rod. A first screw is rotatably connected between the inner walls of both sides of the mounting frame, a moving block is threadedly connected to the outer surface of the first screw, a motor is installed on the outer surface of the mounting frame, the output shaft of the motor is connected to the first screw, a limit rod is connected between the inner walls of both sides of the mounting frame, and the moving block is slidably installed on the limit rod; a mounting block is provided on the outer side of the moving block, a whetstone is provided on the outer side of the mounting block, and the whetstone is provided directly below the slitting knife. The utility model is that the moving block is limited by the limiting rod. When the motor drives the first screw to rotate, the moving block can be driven to move along the length direction of the first screw, and then the grindstone can be driven to move. When the grindstone moves, it passes under the slitting knife, and its V-shaped notch corresponds to the blade of the slitting knife and generates friction, thereby achieving the purpose of automatically grinding the slitting knife. There is no need for manual grinding and disassembly of the slitting knife, which is not only safer but also more efficient and convenient for maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the mounting frame in the present utility model;

[0016] Figure 3 This is a schematic diagram of the regional structure of the slider in the utility model;

[0017] Figure 4 It is a schematic diagram of the cross-sectional structure of the collection box in the present utility model. DETAILED DESCRIPTION

[0018] like Figures 1 to 4 As shown, an automatic slitting device for producing food packaging bags includes a base plate 1, a slitting table 2, a cleaning roller group 3, a mounting frame 4, an electric push rod 5, a slitting knife 6, a first screw 7, a moving block 8, a motor 9, a limit rod 10, a mounting block 11, a grindstone 12, a collection box 13, a cylinder 14, a fan 15, a filter 16, a suction hole 17, a lifting plate 18, a pressing rod 19, a guide rod 20, a sliding sleeve 21, a side block 22, a second screw 23 and a dustproof net 24.

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] In the description of this utility model, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0022] like Figures 1 to 4As shown, a slitting table 2 is installed on the upper surface of the base plate 1, and cleaning roller groups 3 are provided on both sides of the upper surface of the base plate 1. A mounting frame 4 is installed on the upper surface of the base plate 1 between the two cleaning roller groups 3. An electric push rod 5 is installed on the top of the mounting frame 4. A slitting knife 6 is provided at the end of the telescopic end of the electric push rod 5. The electric push rod 5 drives the slitting knife 6 to move back and forth vertically, thereby achieving the purpose of automatically slitting the packaging bag. A first screw rod 7 is rotatably connected between the inner walls of the two sides of the mounting frame 4, and a moving block 8 is threadedly connected to the outer surface of the first screw 7. A motor 9 is installed on the outer surface of the mounting frame 4, and the output shaft of the motor 9 is connected to the first screw 7. A limit rod 10 is connected between the inner walls of the two sides of the mounting frame 4, and the moving block 8 is slidably installed on the limit rod 10. The limit rod 10 serves to limit the moving block 8. When the motor 9 drives the first screw rod 7 to rotate, it can drive the moving block 8 to move along the length direction of the first screw 7.

[0023] A mounting block 11 is provided on the outside of the moving block 8, and a whetstone 12 is provided on the outside of the mounting block 11. The whetstone 12 is provided just below the slitting knife 6. When the electric push rod 5 drives the slitting knife 6 to rise to the highest point, when the starting motor 9 drives the moving block 8 to move, the whetstone 12 can be driven to move synchronously. When the whetstone 12 moves horizontally from the bottom of the slitting knife 6, it can be polished, avoiding the manual disassembly and assembly of the slitting knife 6 and manual polishing, which is more efficient and conducive to maintenance work.

[0024] A collecting box 13 is installed on the side surface of the mounting block 11, and the whetstone 12 is installed on the upper surface of the collecting box 13, and a cylinder 14 is installed on the outer surface of the collecting box 13. A filter screen 16 is provided at the connection between the cylinder 14 and the collecting box 13, and a fan 15 is provided inside the cylinder 14. Suction holes 17 are provided on both sides of the upper surface of the collecting box 13 in the length direction of the whetstone 12. When the slitting knife 6 is grinded by the whetstone 12, the fan 15 can be started, and the suction force generated by the fan 15 acts on the two suction holes 17. When the iron filings generated by grinding fall from the two ends of the whetstone 12, they can be directly sucked into the collecting box 13 from the suction holes 17. Due to the filtering effect of the filter screen 16, the iron filings are collected in the collecting box 13, thereby avoiding the situation where the iron filings dirty the slitting table 2 when grinding the slitting knife 6, ensuring the cleanliness of the working environment, and improving product quality.

[0025] A dustproof net 24 is provided at one end of the cylinder 14 away from the collection box 13. The dustproof net 24 and the filter 16 are both made of stainless steel. Through the setting of the dustproof net 24, external dust and other impurities cannot enter the interior of the cylinder 14 and adhere to the fan 15, affecting its use effect. Since stainless steel has good corrosion resistance, the service life of the filter 16 and the dustproof net 24 can be improved.

[0026] The end of the telescopic end of the electric push rod 5 is installed with a lifting plate 18, and the slitting knife 6 is set on the lower side of the lifting plate 18. Two clamping rods 19 are installed on both sides of the lifting plate 18. Through the setting of the lifting plate 18 and the clamping rod 19, when the electric push rod 5 drives the slitting knife 6 to move downward, the clamping rod 19 fixes the packaging bag, making the incision at the slitting point smoother. Compared with the comparative patent, this device only needs to use one electric push rod 5, which is lower in cost. Guide rods 20 are installed on the upper surface of the lifting plate 18 and on both sides in the longitudinal direction. Slide sleeves 21 are installed on both sides of the upper surface of the mounting frame 4. The guide rods 20 are slidably installed inside the slide sleeves 21. Through the setting of the guide rods 20 and the slide sleeves 21, the stability and smoothness of the lifting plate 18 when it is raised and lowered can be improved, making the slitting knife 6 more effective when in use.

[0027] A slide groove is provided on the side surface of the movable block 8, and a slider is installed on the side surface of the mounting block 11. The slider is arranged in the slide groove, and side blocks 22 are installed on the upper and lower ends of the side surface of the movable block 8. A second screw 23 is rotatably connected between the two side blocks 22, and the second screw 23 passes through the interior of the mounting block 11 and is threadedly connected thereto. Through the setting of the slide groove and the slider, the height of the mounting block 11 can be adjusted when the second screw 23 is rotated. Therefore, when the grindstone 12 and the slitting knife 6 cannot contact well due to wear, the height of the mounting block 11 can be adjusted so that the grindstone 12 and the slitting knife 6 can contact each other to achieve the purpose of grinding.

[0028] The working principle of the present invention is as follows: the packaging bag passes through the cleaning roller groups 3 on both sides, and the packaging bag is pulled and transported by the conveying rollers (not shown in the figure), and then the electric push rod 5 drives the slitting knife 6 to rise and fall back, thereby achieving the purpose of automatic slitting of the packaging bag, and when the electric push rod 5 drives the slitting knife 6 to descend and contact the packaging bag, the pressing rods 19 located in the four directions first contact the packaging bag and press it firmly, so that when the slitting knife 6 cuts the packaging bag, the packaging bag does not deform or shift, thereby improving the flatness of the cut and ensuring the quality and appearance of the packaging bag. When the slitting knife 6 is worn after long-term use and the cut is uneven, the slitting knife 6 can be driven to rise to the highest point by the electric push rod 5, and then the motor 9 is started. The motor 9 drives the first screw 7 to rotate. Since the moving block 8 is limited by the limit rod 10, the moving block 8 can move along the length of the first screw 7. The second screw 23 is rotated to move the grinding stone 12 and the slitting knife 6 from the bottom to the bottom, so that the grinding wheel 12 is kept in the working state, and the grinding wheel 12 is kept in the working state, so that the grinding wheel 12 is kept in the working state, and the grinding wheel 12 is kept in the working state, so that the grinding wheel 12 is kept in the working state, and the grinding wheel 12 is kept in the working state, so that the grinding wheel 12 is kept in the working state, and the grinding wheel 12 is kept in the working state, so that the grinding wheel 12 is kept in the working state, and the grinding wheel 12 is kept in the working state, so that the grinding wheel 12 is kept in the working state,

[0029] The above are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited to them. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention within the technical scope disclosed by the present invention, and they should be covered by the protection scope of the present invention.

Claims

1. An automatic cutting device for producing food packaging bags, comprising a bottom plate (1), characterized in that: A slitting table (2) is installed on the upper surface of the base plate (1), and cleaning roller groups (3) are arranged on both sides of the upper surface of the base plate (1). A mounting frame (4) is installed on the upper surface of the base plate (1) between the two cleaning roller groups (3), and an electric push rod (5) is installed on the top of the mounting frame (4), and a slitting knife (6) is arranged at the end of the telescopic end of the electric push rod (5); a first screw rod (7) is rotatably connected between the inner walls of both sides of the mounting frame (4), and the outer surface of the first screw rod (7) is threadedly connected to the outer surface of the first screw rod (7). A moving block (8) is provided, a motor (9) is installed on the outer surface of the mounting frame (4), the output shaft of the motor (9) is connected to the first screw rod (7), a limiting rod (10) is connected between the inner walls on both sides of the mounting frame (4), and the moving block (8) is slidably installed on the limiting rod (10); a mounting block (11) is provided on the outer side of the moving block (8), a whetstone (12) is provided on the outer side of the mounting block (11), and the whetstone (12) is provided directly below the slitting knife (6).

2. The automatic cutting device for producing food packaging bags according to claim 1, characterized in that: A collecting box (13) is installed on the side surface of the mounting block (11), and the whetstone (12) is installed on the upper surface of the collecting box (13); a cylinder (14) is installed on the outer surface of the collecting box (13); a filter (16) is provided at the connection between the cylinder (14) and the collecting box (13); a fan (15) is provided inside the cylinder (14); and suction holes (17) are provided on both sides of the upper surface of the collecting box (13) in the length direction of the whetstone (12).

3. The automatic cutting device for producing food packaging bags according to claim 2, characterized in that: A lifting plate (18) is installed at the end of the telescopic end of the electric push rod (5), and the slitting knife (6) is arranged on the lower side of the lifting plate (18). Two clamping rods (19) are installed on both sides of the lifting plate (18).

4. The automatic cutting device for producing food packaging bags according to claim 3, characterized in that: Guide rods (20) are installed on both sides of the upper surface of the lifting plate (18) in the length direction, and sliding sleeves (21) are installed on both sides of the upper surface of the mounting frame (4), and the guide rods (20) are slidably installed inside the sliding sleeves (21).

5. The automatic cutting device for producing food packaging bags according to claim 4, characterized in that: A slide groove is provided on the side surface of the moving block (8), a slider is installed on the side surface of the mounting block (11), and the slider is arranged in the slide groove. Side blocks (22) are installed at the upper and lower ends of the side surface of the moving block (8), and a second screw rod (23) is rotatably connected between the two side blocks (22), and the second screw rod (23) passes through the interior of the mounting block (11) and is threadedly connected thereto.

6. The automatic cutting device for producing food packaging bags according to claim 5, characterized in that: A dustproof net (24) is provided at one end of the cylinder (14) away from the collecting box (13); the dustproof net (24) and the filter screen (16) are both made of stainless steel.

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