A packaging paper cutting-off apparatus for a packaging machine

Abstract

The utility model relates to packing paper cutting technology field, concretely relates to a packing paper cutting equipment for packing machinery. It includes T type bottom plate, and the upside fixed connection of T type bottom plate has the U type support, and the both sides of U type support are provided with the guide roller of installation in the upside of T type bottom plate, and the inside of U type support is provided with cutting device and protective device, and cutting device includes blade, and the upside fixed connection of blade has sliding plate, and the upside fixed connection of sliding plate has the lug, and the lug runs through U type support and extends, and the both sides of blade are provided with the elastic connecting piece of sliding plate downside. The utility model discloses when pushing the lug to move down, the blade will have the packing paper of flaw cutting, when cutting, the lug is loosened, and the elastic thrust of spring is used to the second connecting rod, and the second connecting rod pushes the sliding plate and moves, so that the blade resets quickly, avoids the packing paper of flaw being packed to the product, thereby the quality and the appearance of influence.

Description

Technical Field

[0001] This utility model relates to the field of packaging paper cutting technology, specifically, to a packaging paper cutting device for packaging machinery. Background Technology

[0002] Traditional packaging paper is generally made from wood pulp, such as kraft paper, which has high strength and toughness, making it suitable for packaging heavy items. With increasing environmental awareness and technological advancements, many new packaging paper materials have emerged. For example, packaging paper made from biodegradable materials, such as biodegradable paper made from starch and plant fibers, can decompose quickly in the natural environment, reducing pollution. There are also functional materials, such as metallized paper, which has good barrier and moisture-proof properties and is commonly used for packaging pharmaceuticals and cosmetics. When packaging paper is used to package products, some packaging papers may have defects. These defects may cause problems during use. For example, creases or tears in the paper can easily cause breakage during packaging, affecting the smooth process. If the defect is at the edge, the packaging paper may not be able to tightly wrap the product, resulting in unsightly and weak packaging that fails to protect the product. Therefore, we propose a packaging paper cutting device for packaging machinery. Utility Model Content

[0003] The purpose of this invention is to provide a packaging paper cutting device for packaging machinery, so as to solve the problem mentioned in the background art that defects in packaging paper will affect the appearance and quality of the product.

[0004] To achieve the above objectives, this utility model provides a packaging paper cutting device for packaging machinery, including a T-shaped base plate. A U-shaped bracket is fixedly connected to the upper side of the T-shaped base plate. Guide rollers mounted on the upper side of the T-shaped base plate are arranged on both sides of the U-shaped bracket. A cutting device and a protective device are arranged inside the U-shaped bracket. The cutting device includes a blade. A sliding plate is fixedly connected to the upper side of the blade. A protrusion is fixedly connected to the upper side of the sliding plate. The protrusion penetrates the U-shaped bracket and extends outward. Elastic connectors are arranged on both sides of the blade located below the sliding plate. The elastic connectors are used to quickly reset the blade after cutting the packaging paper.

[0005] By adopting the above scheme, the blade slides downward by pressing the protrusion and cuts the packaging paper. After the packaging paper is cut, the elastic force applied to the sliding plate by the elastic connector makes the blade quickly return to its original position.

[0006] As a further improvement to this technical solution, fixed rods are fixedly connected to both sides of the sliding plate, and guide blocks are fixedly connected to the ends of the fixed rods. A guide groove is opened on the inner surface of the U-shaped bracket, and the guide block is slidably disposed inside the guide groove.

[0007] By adopting the above scheme, when the sliding plate slides, the sliding plate is guided by the sliding of the guide block inside the guide groove.

[0008] As a further improvement to this technical solution, the elastic connector includes a first connecting rod, which is fixedly installed on the upper side of the T-shaped base plate. A second connecting rod is slidably disposed inside the first connecting rod. One end of the second connecting rod extends out of the first connecting rod and is fixedly connected to the lower side of the sliding plate. The other end of the second connecting rod is fixedly connected to a spring located inside the first connecting rod. The spring is used to apply an upward elastic thrust to the second connecting rod.

[0009] By adopting the above scheme, after the packaging paper is cut and the protrusion is released, the elastic thrust applied by the spring to the second connecting rod will push the second connecting rod out, causing the second connecting rod to push the sliding plate to slide upward.

[0010] As a further improvement to this technical solution, a limiting groove is formed on the inner surface of the first connecting rod, and a limiting block is slidably arranged inside the limiting groove, and the limiting block is fixedly installed on the second connecting rod.

[0011] By adopting the above scheme, when the second connecting rod slides, the position of the second connecting rod is limited by the sliding of the limiting block inside the limiting groove.

[0012] As a further improvement to this technical solution, the protective device includes a blocking block that is slidably disposed on the upper surface of the T-shaped base plate. A hinge seat is fixedly connected to one side of the blocking block, and a hinge rod is hinged to the hinge seat. The other end of the hinge rod is fixedly mounted on the sliding plate.

[0013] By adopting the above scheme, during the sliding plate reset process, the two blocking blocks slide towards each other through the hinge between the hinge rod, the hinge seat, and the sliding plate, so that the blocking blocks protect the hinge seat.

[0014] As a further improvement to this technical solution, a T-shaped groove is provided on the upper surface of the T-shaped base plate, and a T-shaped slider is slidably arranged inside the T-shaped groove. The T-shaped slider is fixedly installed on the lower side of the hinge seat.

[0015] By adopting the above scheme, when the two hinge seats slide, the hinge seats are guided and limited by the sliding of the T-shaped slider inside the T-shaped groove.

[0016] As a further improvement to this technical solution, a roller groove is provided on the T-shaped slider, and a roller is rotatably arranged inside the roller groove, and the roller is rolled inside the T-shaped slider.

[0017] By adopting the above scheme, when the T-shaped slider slides inside the T-shaped groove, the friction between the T-shaped slider and the T-shaped base plate is reduced by setting the rollers.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] In this type of packaging paper cutting device for packaging machinery, the blade cuts the defective packaging paper by pushing the protrusion downward. After cutting, the protrusion is released, and the elastic thrust applied by the spring to the second connecting rod causes the second connecting rod to push the sliding plate to move, thereby making the blade quickly return to its original position and preventing the defective packaging paper from being packaged onto the product, thus affecting the quality and appearance. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a structural schematic diagram of the T-shaped base plate and U-shaped bracket of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the utility model cutting device;

[0023] Figure 4 This is a structural schematic diagram of the elastic connector of the utility model;

[0024] Figure 5 This is a schematic diagram of the structure of a utility model protective device;

[0025] Figure 6 This is a cross-sectional view of the T-shaped slider of the utility model.

[0026] The meanings of the labels in the diagram are as follows:

[0027] 1. T-shaped base plate; 2. Cutting device; 21. Sliding plate; 22. Blade; 23. Protrusion; 24. Fixing rod; 25. Guide block; 26. First connecting rod; 27. Second connecting rod; 28. Spring; 29. ​​Limiting groove; 211. Limiting block; 3. Protective device; 31. Blocking block; 32. Hinge seat; 33. Hinge rod; 34. T-shaped slider; 35. Roller; 4. Guide roller; 5. U-shaped bracket; 6. T-shaped slide groove; 7. Guide groove. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0030] Example 1

[0031] Please see Figures 1-3 As shown, this embodiment provides a paper cutting device for packaging machinery, including a T-shaped base plate 1. A U-shaped bracket 5 is fixedly connected to the upper side of the T-shaped base plate 1. Guide rollers 4 installed on the upper side of the T-shaped base plate 1 are arranged on both sides of the U-shaped bracket 5. A cutting device 2 and a protective device 3 are arranged inside the U-shaped bracket 5. The cutting device 2 includes a blade 22. A sliding plate 21 is fixedly connected to the upper side of the blade 22. A protrusion 23 is fixedly connected to the upper side of the sliding plate 21. The protrusion 23 penetrates the U-shaped bracket 5 and extends outward. When the paper has defects, pressing the protrusion 23 will cut the paper. The blade 22 slides downward to cut the packaging paper, preventing defective packaging paper from affecting the product's appearance. The sliding plate 21 has fixed rods 24 on both sides, and guide blocks 25 are fixedly connected to the ends of the rods 24. A guide groove 7 is provided on the inner surface of the U-shaped bracket 5, and the guide block 25 is slidably positioned inside the guide groove 7. When the sliding plate 21 slides, the guide block 25 guides the sliding of the sliding plate 21 within the guide groove 7, preventing uneven force distribution from affecting the cutting effect on the packaging paper.

[0032] Please see Figure 3 and Figure 4As shown, elastic connectors are provided on both sides of the blade 22, located below the sliding plate 21. These elastic connectors are used to quickly reset the blade 22 after it cuts the packaging paper. Each elastic connector includes a first connecting rod 26, which is fixedly installed on the upper side of the T-shaped base plate 1. A second connecting rod 27 is slidably disposed inside the first connecting rod 26. One end of the second connecting rod 27 extends out of the first connecting rod 26 and is fixedly connected to the lower side of the sliding plate 21. The other end of the second connecting rod 27 is fixedly connected to a spring 28 located inside the first connecting rod 26. The spring 28 applies an upward elastic thrust to the second connecting rod 27 after the packaging paper is cut. When the protrusion 23 is released, the elastic thrust applied to the second connecting rod 27 by the spring 28 pushes the second connecting rod 27 out, causing the second connecting rod 27 to push the sliding plate 21 to slide upward, thereby causing the blade 22 to quickly return to its original position. The inner surface of the first connecting rod 26 has a limiting groove 29, and a limiting block 211 is slidably disposed inside the limiting groove 29. The limiting block 211 is fixedly installed on the second connecting rod 27. When the spring 28 pushes the second connecting rod 27 to slide, the position of the second connecting rod 27 is limited by the sliding of the limiting block 211 inside the limiting groove 29, so as to prevent the second connecting rod 27 from slipping and causing device failure.

[0033] Please see Figure 1 and Figure 5 As shown, the protective device 3 includes a blocking block 31 slidably disposed on the upper surface of the T-shaped base plate 1. A hinge seat 32 is fixedly connected to one side of the blocking block 31, and a hinge rod 33 is hinged to the hinge seat 32. The other end of the hinge rod 33 is fixedly installed on the sliding plate 21. During the resetting process of the sliding plate 21, the two hinge seats 32 are pulled to slide towards each other through the connection between the hinge rod 33 and the sliding plate 21 and the hinge seat 32, so that the blocking block 31 fixed on the hinge seat 32 protects the blade 22, preventing the blade 22 from loosening due to wear after long-term use, which could cause the blade 22 to fall off during operation and injure the operator.

[0034] Please see Figure 2 , Figure 5 and Figure 6 As shown, a T-shaped groove 6 is formed on the upper surface of the T-shaped base plate 1. A T-shaped slider 34 is slidably arranged inside the T-shaped groove 6. The T-shaped slider 34 is fixedly installed on the lower side of the hinge seat 32. When the hinge seat 32 slides, the sliding of the T-shaped slider 34 inside the T-shaped groove 6 guides and limits the hinge seat 32, so that the blocking block 31 is always in contact with the surface of the T-shaped base plate 1 when sliding, making the device more stable. The T-shaped slider 34 is provided with a roller groove, and a roller 35 is rotatably arranged inside the roller groove. The roller 35 is rolled inside the T-shaped groove 6. When the T-shaped slider 34 slides inside the T-shaped groove 6, the setting of the roller 35 reduces the friction between the T-shaped base plate 1 and the T-shaped slider 34, which protects the device and extends its service life.

[0035] In this embodiment, a packaging paper cutting device for packaging machinery is used such that when defective packaging paper passes by, the user presses down on the protrusion 23 to make the blade 22 slide downward, thus cutting the packaging paper. During the sliding process of the sliding plate 21, the guide block 25 guides the sliding plate 21 by sliding inside the guide groove 7. After the packaging paper is cut, the protrusion 23 is released, and the elastic thrust applied to the second connecting rod 27 by the spring 28 pushes the second connecting rod 27 up, causing the second connecting rod 27 to push the sliding plate 21 upward, thereby quickly resetting the sliding plate 21 and the blade 22. During the resetting process of the sliding plate 21, the hinge rod 33 pulls the two blocking blocks 31 to slide towards each other through the hinge between the hinge seat 32 and the sliding plate 21. When the sliding plate 21 rises to its highest position, the blocking blocks 31 move to the underside of the blade 22, thus protecting the blade 22.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A paper cutting device for packaging machinery, comprising a T-shaped base plate (1), wherein a U-shaped bracket (5) is fixedly connected to the upper side of the T-shaped base plate (1), and guide rollers (4) installed on the upper side of the T-shaped base plate (1) are provided on both sides of the U-shaped bracket (5), characterized in that: The U-shaped bracket (5) is provided with a cutting device (2) and a protective device (3) on its inner side. The cutting device (2) includes a blade (22). A sliding plate (21) is fixedly connected to the upper side of the blade (22). A protrusion (23) is fixedly connected to the upper side of the sliding plate (21). The protrusion (23) penetrates the U-shaped bracket (5) and extends outward. Elastic connectors are provided on both sides of the blade (22) located on the lower side of the sliding plate (21). The elastic connectors are used for the blade (22) to quickly reset after cutting the packaging paper.

2. The packaging paper cutting device for packaging machinery according to claim 1, characterized in that: The sliding plate (21) is fixedly connected to two sides by fixed rods (24), and the end of the fixed rod (24) is fixedly connected to a guide block (25). The inner surface of the U-shaped bracket (5) is provided with a guide groove (7), and the guide block (25) is slidably disposed inside the guide groove (7).

3. The packaging paper cutting device for packaging machinery according to claim 1, characterized in that: The elastic connector includes a first connecting rod (26), which is fixedly installed on the upper side of the T-shaped base plate (1). A second connecting rod (27) is slidably disposed inside the first connecting rod (26). One end of the second connecting rod (27) extends out of the first connecting rod (26) and is fixedly connected to the lower side of the sliding plate (21). The other end of the second connecting rod (27) is fixedly connected to a spring (28) located inside the first connecting rod (26). The spring (28) is used to apply an upward elastic thrust to the second connecting rod (27).

4. The packaging paper cutting device for packaging machinery according to claim 3, characterized in that: A limiting groove (29) is formed on the inner surface of the first connecting rod (26), and a limiting block (211) is slidably arranged inside the limiting groove (29). The limiting block (211) is fixedly installed on the second connecting rod (27).

5. The packaging paper cutting device for packaging machinery according to claim 1, characterized in that: The protective device (3) includes a blocking block (31) that is slidably disposed on the upper surface of the T-shaped base plate (1). A hinge seat (32) is fixedly connected to one side of the blocking block (31), and a hinge rod (33) is hinged on the hinge seat (32). The other end of the hinge rod (33) is fixedly installed on the sliding plate (21).

6. The packaging paper cutting device for packaging machinery according to claim 5, characterized in that: The upper surface of the T-shaped base plate (1) is provided with a T-shaped groove (6), and a T-shaped slider (34) is slidably arranged inside the T-shaped groove (6). The T-shaped slider (34) is fixedly installed on the lower side of the hinge seat (32).

7. The packaging paper cutting device for packaging machinery according to claim 6, characterized in that: The T-shaped slider (34) has a roller groove, and a roller (35) is rotatably disposed inside the roller groove. The roller (35) is rotatably disposed inside the T-shaped groove (6).

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