Cutting device for packaging film roll material of packaging bag

Abstract

The utility model relates to a packaging film roll material cutting device of a packaging bag, which comprises a machine frame, a swing frame is arranged on the machine frame, the rear end of the swing frame is hinged on the machine frame, a top roller and a knife rest are arranged at the front end of the swing frame, the top roller and the knife rest can respectively move up and down relative to the swing frame, and a cutter is arranged on the knife rest. The packaging film roll material cutting device for the packaging bag is reasonable in design, convenient to use, high in practicability, good in universality and high in cutting efficiency, it is guaranteed that the cut end is smooth, and labor is saved.

Description

Technical Field

[0001] The utility model relates to the field of packaging bag adding equipment, in particular to a packaging film roll cutting device for packaging bags. Background Art

[0002] Plastic packaging bags are widely used in foreign trade export, papermaking, hardware, plastic chemicals, building materials, food and medicine and other industries. The packaging film used to make plastic packaging bags is mainly made of polyethylene resin mixed and extruded. The processed packaging film needs to be wound into a roll on the winder for easy transportation and storage. After the packaging film on the winder is wound to the set diameter, it needs to be cut. At present, the cutting operation is basically manual, which is inefficient. Moreover, since it is cut from one side to the other, not directly cut at one time, it is easy to cause the end to be skewed and uneven. Utility Model Content

[0003] In view of this, the purpose of the utility model is to provide a packaging film roll cutting device for packaging bags which is easy to use, highly practical and has high cutting efficiency.

[0004] The utility model is implemented by the following scheme: a packaging film roll cutting device for packaging bags, comprising a frame, a swing frame with a rear end hinged to the frame, a top roller and a knife frame which can move up and down respectively relative to the swing frame are provided at the front end of the swing frame, and a cutting knife is provided on the knife frame.

[0005] Furthermore, the tool holder is located in front of the top roller, and the swing frame is provided with a first rotating shaft and a second rotating shaft behind the top roller. The two ends of the top roller are connected to the two ends of the first rotating shaft through a connecting arm, and the two ends of the tool holder are connected to the two ends of the second rotating shaft through a crank arm.

[0006] Furthermore, a first cylinder for driving the first rotating shaft to rotate is provided on one side of the swing frame, a first swing arm is fixedly connected to the corresponding end of the first rotating shaft, the bottom of the first cylinder is hinged to the swing frame, and the telescopic rod of the first cylinder is hinged to the first swing arm.

[0007] Furthermore, a second cylinder for driving the second rotating shaft to rotate is provided on the other side of the swing frame, and the corresponding end of the second rotating shaft is fixedly connected to the second swing arm. The bottom of the second cylinder is hinged on the swing frame, and the telescopic rod of the second cylinder is hinged to the second swing arm.

[0008] Furthermore, bearing seats are provided on both sides of the frame, and the rear end of the swing frame is fixedly connected with a mounting shaft whose two ends are rotatably matched with the bearing seats. The frame is provided with a third cylinder for driving the swing frame to swing, and the corresponding end of the mounting shaft is fixedly connected with a third swing arm. The bottom of the third cylinder is hinged to the frame, and the telescopic rod of the third cylinder is hinged to the third swing arm.

[0009] Furthermore, the cutting knife adopts a serrated blade.

[0010] Compared with the prior art, the utility model has the following beneficial effects: the packaging film roll cutting device of the packaging bag of the utility model is reasonably designed, easy to use, highly practical, versatile, and has high cutting efficiency, ensuring that the ends after cutting are flat, saving labor.

[0011] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below through specific embodiments and related drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a right view of the embodiment of the utility model in use;

[0013] Figure 2 This is a right side view of the swing frame of the utility model embodiment;

[0014] Figure 3 This is a left view of the swing frame of the utility model embodiment;

[0015] Explanation of numbers in the figure: 1-frame, 2-swing frame, 3-top roller, 4-knife frame, 5-cutting knife, 6-first rotating shaft, 7-second rotating shaft, 8-connecting arm, 9-crank arm, 10-first cylinder, 11-first swing arm, 12-second cylinder, 13-second swing arm, 14-installing shaft, 15-third cylinder, 16-third swing arm, 17-winding machine, 18-guide roller, 19-packaging film. DETAILED DESCRIPTION

[0016] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0017] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0018] like Figures 1 to 3As shown, a packaging film roll cutting device for packaging bags comprises a frame 1, wherein the frame 1 is provided with a swing frame 2 whose rear end is hinged to the frame, the front end of the swing frame is provided with a top roller 3 and a knife frame 4 which can move up and down respectively relative to the swing frame, and the knife frame is provided with a cutting knife 5, the length direction of the cutting knife and the top roller is parallel to the width direction of the packaging film, the length of the cutting knife and the top roller is greater than the width of the packaging film, the length of the cutting knife and the top roller is designed to be 1.1-1.3m, and is applicable to packaging films whose width is smaller than the cutting knife and the top roller. When in use, the frame is located behind the winder 17 (i.e., the feeding side), and the frame is provided with a guide roller 18 for guiding the packaging film. The swing frame 2 is located between the winder 17 and the frame, and the packaging film passes through the frame and enters the winder 17 for winding. After the winder 17 winds a roll, the packaging film needs to be cut; at this time, the swing frame 2 swings up to the specified position, and then the top roller 3 moves upward to lift the packaging film slightly upward to make the packaging film tighter, and then the knife holder moves upward to cut the packaging film with the cutting knife on the knife holder; after the cutting operation is completed, the swing frame swings down and is folded.

[0019] In this embodiment, the knife holder is located in front of the top roller, and the swing frame is provided with a first rotating shaft 6 and a second rotating shaft 7 behind the top roller. The two ends of the top roller are connected to the two ends of the first rotating shaft through a connecting arm 8, and the two ends of the knife holder are connected to the two ends of the second rotating shaft through a crank arm 9. The up and down movement of the top roller is completed by the swing of the connecting arm, and the up and down movement of the knife holder is completed by the swing of the crank arm.

[0020] In this embodiment, a first cylinder 10 for driving the first rotating shaft to rotate is provided on one side of the swing frame, a first swing arm 11 is fixedly connected to the corresponding end of the first rotating shaft, the bottom of the first cylinder is hinged on the swing frame, and the telescopic rod of the first cylinder is hinged to the first swing arm. When the first cylinder is extended and retracted, the first rotating shaft is driven to rotate through the first swing arm, and the first rotating shaft drives the connecting arm to swing up and down, thereby realizing the lifting and lowering of the top roller.

[0021] In this embodiment, a second cylinder 12 is provided on the other side of the swing frame to drive the second shaft to rotate, a second swing arm 13 is fixedly connected to the corresponding end of the second shaft, the bottom of the second cylinder is hinged on the swing frame, and the telescopic rod of the second cylinder is hinged to the second swing arm. When the second cylinder is extended and retracted, the second shaft is driven to rotate through the second swing arm, and the second shaft drives the crank arm to swing up and down, thereby realizing the lifting and lowering of the tool holder.

[0022] In the specific implementation process, the up and down movement of the tool holder and the top roller can also be directly driven by a cylinder, that is, a cylinder is arranged under both ends of the tool holder and the top roller, and both ends of the tool holder and the top roller are directly connected to the telescopic rod of the cylinder.

[0023] In this embodiment, bearing seats are provided on both sides of the frame, and the rear end of the swing frame is fixedly connected with a mounting shaft 14 whose two ends are rotatably matched with the bearing seats. The frame is provided with a third cylinder 15 for driving the swing frame to swing, and the corresponding end of the mounting shaft is fixedly connected with a third swing arm 16. The bottom of the third cylinder is hinged on the frame, and the telescopic rod of the third cylinder is hinged with the third swing arm. When the third cylinder is extended and retracted, the swing frame is driven to swing up and down through the third swing arm and the mounting shaft, so as to realize the switching of the swing frame between the working station and the folding work. In the specific implementation process, the above-mentioned cylinder can also be replaced by a hydraulic cylinder or an electric push rod.

[0024] In this embodiment, the cutter is a serrated blade.

[0025] Unless otherwise stated, any technical solution disclosed in the above utility model, if it discloses a numerical range, then the disclosed numerical range is a preferred numerical range. Any technician in the field should understand that the preferred numerical range is only a numerical value with a more obvious technical effect or representative value among many feasible numerical values. Since there are too many numerical values ​​to be exhaustive, the utility model discloses only some numerical values ​​to illustrate the technical solution of the utility model, and the numerical values ​​listed above should not constitute a limitation on the scope of protection of the utility model.

[0026] If the present invention discloses or involves components or structures that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, connection using bolts or screws), and can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutual fixed connection can also be replaced by an integrated structure (for example, manufactured by one-piece molding using a casting process) (except when it is obviously impossible to use an one-piece molding process).

[0027] In addition, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in the above utility model include states or shapes that are approximate, similar or close thereto.

[0028] Any component provided by the utility model can be assembled from multiple separate components, or can be a separate component manufactured by an integrated molding process.

[0029] The above is only the preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model.

Claims

1. A packaging film roll cutting device for packaging bags, characterized in that: The machine comprises a frame, wherein a swing frame is provided on the frame with a rear end hinged on the frame, a top roller and a knife frame which can respectively move up and down relative to the swing frame are provided at the front end of the swing frame, and a cutting knife is provided on the knife frame.

2. The packaging film roll cutting device for packaging bags according to claim 1, characterized in that: The tool holder is located in front of the top roller, and the swing frame is provided with a first rotating shaft and a second rotating shaft behind the top roller. The two ends of the top roller are connected to the two ends of the first rotating shaft through a connecting arm, and the two ends of the tool holder are connected to the two ends of the second rotating shaft through a crank arm.

3. The packaging film roll cutting device for packaging bags according to claim 2, characterized in that: A first cylinder for driving the first rotating shaft to rotate is provided on one side of the swing frame, a first swing arm is fixedly connected to the corresponding end of the first rotating shaft, the bottom of the first cylinder is hinged on the swing frame, and the telescopic rod of the first cylinder is hinged to the first swing arm.

4. The packaging film roll cutting device for packaging bags according to claim 2, characterized in that: A second cylinder for driving the second rotating shaft to rotate is provided on the other side of the swing frame, and a second swing arm is fixedly connected to the corresponding end of the second rotating shaft. The bottom of the second cylinder is hinged on the swing frame, and the telescopic rod of the second cylinder is hinged to the second swing arm.

5. The packaging film roll cutting device for packaging bags according to claim 1, characterized in that: Bearing seats are provided on both sides of the frame, and the rear end of the swing frame is fixedly connected with a mounting shaft whose two ends are rotatably matched with the bearing seats. The frame is provided with a third cylinder for driving the swing frame to swing, and the corresponding end of the mounting shaft is fixedly connected with a third swing arm. The bottom of the third cylinder is hinged on the frame, and the telescopic rod of the third cylinder is hinged to the third swing arm.

6. The packaging film roll cutting device for packaging bags according to claim 1, characterized in that: The cutter adopts a serrated blade.

Images