Packaging film cutting device

Abstract

The utility model provides a packaging film cutting device, and belongs to the technical field of door and window frame packaging film cutting. The problem that in the prior art, cutting of packaging films wastes time and labor is solved. The packaging film cutting device comprises a rack, a winding roller, a tensioning roller and a material placing roller which can rotate relative to the rack are sequentially arranged on the rack front and back at intervals, the material placing roller, the tensioning roller and the winding roller are sequentially arranged in an up-down staggered mode, a slitting blade is further arranged on the rack, the slitting blade is located between the winding roller and the tensioning roller, and the slitting blade is located between the winding roller and the tensioning roller. The slitting blade is obliquely arranged from bottom to top in the direction from the winding roller to the tensioning roller, and the cutting edge of the slitting blade is arranged upwards. The packaging film cutting device has the advantage that the cutting efficiency of the packaging film can be greatly improved.

Description

Technical Field

[0001] This utility model belongs to the field of door and window frame packaging film cutting technology, and relates to a packaging film cutting device. Background Technology

[0002] Packaging film (packing film) is a commonly used packaging material. It is needed to wrap door and window frames before storage and transportation, protecting them during these processes. Currently, packaging film is sold in rolls with only a few fixed widths. To avoid waste or shortages, workers currently need to manually cut the purchased film before packaging to match the width of the door and window frames. However, manual cutting is time-consuming, labor-intensive, and inefficient. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in existing technologies by providing a packaging film cutting device. The technical problem this invention aims to solve is how to improve the cutting efficiency of packaging films.

[0004] The objective of this utility model can be achieved through the following technical solutions:

[0005] A packaging film cutting device includes a frame, characterized in that a take-up roller, a tension roller, and a feeding roller, which are rotatable relative to the frame, are arranged sequentially and at intervals, and the feeding roller, tension roller, and take-up roller are arranged vertically and staggered. A slitting blade is also provided on the frame, the slitting blade is located between the take-up roller and the tension roller, the slitting blade is inclined from bottom to top along the direction from the take-up roller to the tension roller, and the cutting edge of the slitting blade is facing upward.

[0006] In use, the user simply places the entire roll of packaging film on the feeding roller, then passes the packaging film on the feeding roller through the tension roller and pre-stretches it to the take-up roller for fixation. Finally, the user simply rotates the take-up roller. During the process of transferring the packaging film from the feeding roller to the take-up roller, the tension roller keeps the packaging film taut during the slitting process. The packaging film contacts the upward-facing blades of the slitting blades, which automatically cut the packaging film into the predetermined size. At the same time, the slitting packaging film can be wound up on the take-up roller, thereby greatly improving the cutting efficiency of the packaging film.

[0007] In the aforementioned packaging film cutting device, the slitting blade includes a handle with a storage groove and a blade body disposed on the handle and rotatably retractable into the storage groove. The cutting edge of the slitting blade is located on the upper side of the blade body. When not in use, the user can rotate the blade body upwards and retract it into the storage groove to prevent the blade edge from accidentally cutting the operator. Furthermore, when slitting the packaging film, the force exerted by the film on the blade body is downwards, so the blade body will not shift, ensuring the slitting effect.

[0008] In the aforementioned packaging film cutting device, one end of the take-up roller extends out of the frame, and a rotating handle is provided at the part of the take-up roller extending out of the frame. During use, the user only needs to turn the handle to drive the take-up roller to rotate, making operation very convenient.

[0009] In the aforementioned packaging film cutting device, a motor is mounted on the frame, one end of the take-up roller extends out of the frame, and the output shaft of the motor is connected to the portion of the take-up roller that extends out of the frame. Using a motor as the power source to drive the rotation of the take-up roller reduces labor intensity.

[0010] In the above-mentioned packaging film cutting device, rotating grooves are provided on both sides of the frame, and the two ends of the take-up roller are respectively rotatably disposed in the two rotating grooves. A limiting bolt is detachably inserted between the two side walls of the groove opening. The above structure enables the take-up roller to be detachably rotatably disposed in the rotating groove, facilitating the removal of multiple rolls of slit packaging film from the take-up roller.

[0011] In the aforementioned packaging film cutting device, the frame has two uprights on both sides, and the top of each upright has a mounting groove extending from top to bottom. The two ends of the feeding roller are rotatably mounted within the mounting grooves of the two uprights. This structure allows the feeding roller to be detachably and rotatably mounted between the two uprights, facilitating the placement of a whole roll of packaging film.

[0012] In the aforementioned packaging film cutting device, the frame includes a base plate disposed at the bottom of two columns and a working frame disposed in the middle of the two columns. The base plate and the working frame are arranged parallel to each other vertically, forming a storage space between them. Several parallel partitions are spaced apart within the working frame. This frame structure achieves lightweight design while maintaining structural strength. Furthermore, the storage space formed between the base plate and the working frame can be used to hold whole rolls of packaging film or slit rolls of packaging film, resulting in a more rational structure.

[0013] In the aforementioned packaging film cutting device, braked pulleys are arranged at the four corners of the bottom of the base plate. By providing braked pulleys, the packaging film cutting device can be easily moved and stopped within the workshop, making it very labor-saving and convenient.

[0014] Compared with existing technologies, the advantages of this packaging film cutting device are as follows: When in use, the user only needs to place the entire roll of packaging film on the feeding roller, then pass the packaging film on the feeding roller through the tension roller and pre-stretch it to the take-up roller for fixation, and finally the user only needs to rotate the take-up roller. During the process of the packaging film being transferred from the feeding roller to the take-up roller, the slitting blade automatically cuts the packaging film into the predetermined size, thereby greatly improving the cutting efficiency of the packaging film. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the packaging film cutting device.

[0016] Figure 2 yes Figure 1 A magnified view of a portion of point A in the middle.

[0017] In the diagram, 1 is the frame; 1a is the column; 1a1 is the mounting slot; 1b is the base plate; 1c is the working frame; 1c1 is the spacer; 2 is the take-up roller; 3 is the tension roller; 4 is the feeding roller; 5 is the slitting blade; 5a is the blade handle; 5a1 is the storage slot; 5b is the blade body; 6 is the rotating slot; 7 is the limit bolt; 8 is the storage space; and 9 is the pulley. Detailed Implementation

[0018] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0019] Example 1

[0020] A packaging film cutting device, as shown in the reference Figure 1-2 The system includes a frame 1, on which a take-up roller 2, a tension roller 3, and a feed roller 4 are arranged in a rotatable manner, with the feed roller 4, tension roller 3, and take-up roller 2 arranged in a staggered manner, and a slitting blade 5 is also provided on the frame 1. The slitting blade 5 is located between the take-up roller 2 and the tension roller 3. The slitting blade 5 is inclined from bottom to top along the direction from the take-up roller 2 to the tension roller 3, and the cutting edge of the slitting blade 5 is facing upward.

[0021] Specifically, refer to Figure 1 The slitting blade 5 includes a handle 5a with a storage groove 5a1 and a blade body 5b disposed on the handle 5a and rotatably stored in the storage groove 5a1. The cutting edge of the slitting blade 5 is located on the upper side of the blade body 5b.

[0022] Furthermore, referring to Figure 1-2 One end of the take-up roller 2 extends out of the frame 1, and a rotating handle (not shown in the figure) is provided at the part of the take-up roller 2 that extends out of the frame 1; rotating grooves 6 are provided on both sides of the frame 1, and the two ends of the take-up roller 2 are respectively rotatably set in the two rotating grooves 6, and a limiting bolt 7 is detachably inserted between the two side walls of the groove opening of the rotating groove 6.

[0023] More specifically, refer to Figure 1-2The frame 1 has two columns 1a on both sides, and the top of each column 1a has a mounting groove 1a1 that runs from top to bottom. The two ends of the feeding roller 4 are respectively rotatably installed in the mounting grooves 1a1 of the two columns 1a. The frame 1 includes a base plate 1b at the bottom of the two columns 1a and a working frame 1c in the middle of the two columns 1a. The base plate 1b and the working frame 1c are arranged parallel to each other vertically, and a storage space 8 is formed between the base plate 1b and the working frame 1c. Several parallel partition bars 1c1 are arranged at intervals in the working frame 1c. The bottom four corners of the base plate 1b are provided with braked pulleys 9.

[0024] The working principle of this packaging film cutting device is explained below:

[0025] In use, the user first places the entire roll of packaging film onto the feeding roller 4. Then, the two ends of the feeding roller 4, with the packaging film on it, are placed from top to bottom into the mounting grooves 1a1 of the two columns 1a. The packaging film is then stretched and passed under the tension roller 3 until it is stretched onto the take-up roller 2. During this process, the slitting blade 5 automatically divides the packaging film into two halves. The user then fixes the ends of the two halves of the packaging film onto the take-up roller 2 (adhesive fixation can be used). Finally, the user rotates the take-up roller. As the take-up roller 2 rotates continuously, the packaging film is continuously transferred from the feeding roller 4 to the take-up roller 2. Simultaneously, during the stretching process, the slitting blade 5 automatically cuts the packaging film into predetermined sizes. This process continues until all the packaging film on the feeding roller 4 is wound onto the take-up roller 2, which then holds two rolls of cut packaging film. The user then removes the limiting bolt 7 and removes the take-up roller 2 from the rotating groove 6. Finally, the two rolls of cut packaging film are removed for later use. It should be noted that multiple slitting blades 5 can be set according to the required cutting size of the packaging film. These multiple slitting blades 5 are spaced apart along the length of the working frame 1c. Depending on the usage requirements, multiple tension rollers 3 can also be set, spaced apart between the feeding roller 4 and the take-up roller 2.

[0026] Example 2

[0027] This embodiment is basically the same in structure and principle as Embodiment 1, the difference being: (Refer to...) Figure 1-2 The frame 1 is equipped with a motor (not shown in the motor diagram), one end of the take-up roller 2 extends out of the frame 1, and the output shaft of the motor is connected to the part of the take-up roller 2 that extends out of the frame 1.

[0028] The working principle of this packaging film cutting device is explained below:

[0029] In use, the user first places the entire roll of packaging film onto the feeding roller 4. Then, the two ends of the feeding roller 4, with the packaging film on it, are placed from top to bottom into the mounting grooves 1a1 of the two columns 1a. The packaging film is then stretched and passed under the tension roller 3 until it reaches the winding roller 2. During this process, the slitting blade 5 automatically divides the packaging film into two halves. The user then fixes the ends of the two halves of the packaging film onto the winding roller 2 (adhesive fixation can be used). Finally, the user starts the motor. The motor drives the take-up roller 2 to rotate. As the take-up roller 2 rotates continuously, the packaging film is continuously transferred from the feed roller 4 to the take-up roller 2. At the same time, during the stretching process of the packaging film, the slitting blade 5 continuously cuts the packaging film into two halves until all the packaging film on the feed roller 4 is wound onto the take-up roller 2. The user turns off the motor. At this time, there are two cut packaging films wound on the take-up roller 2. Then the user removes the limit bolt 7 and then removes the take-up roller 2 from the rotating groove 6. Finally, the two rolls of cut packaging film can be removed for later use.

[0030] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A packaging film cutting device, comprising a frame (1), characterized in that, The frame (1) is provided with a take-up roller (2), a tension roller (3) and a feed roller (4) that can rotate relative to it. The feed roller (4), tension roller (3) and take-up roller (2) are arranged in a staggered manner. The frame (1) is also provided with a slitting blade (5). The slitting blade (5) is located between the take-up roller (2) and the tension roller (3). The slitting blade (5) is inclined from bottom to top along the direction from the take-up roller (2) to the tension roller (3), and the blade edge of the slitting blade (5) is facing upward.

2. The packaging film cutting device according to claim 1, characterized in that, The slitting blade (5) includes a handle (5a) with a storage groove (5a1) and a blade body (5b) disposed on the handle (5a) and rotatably stored in the storage groove (5a1). The cutting edge of the slitting blade (5) is located on the upper side of the blade body (5b).

3. The packaging film cutting device according to claim 1, characterized in that, One end of the take-up roller (2) extends out of the frame (1), and a rotating handle is provided at the part of the take-up roller (2) that extends out of the frame (1).

4. The packaging film cutting device according to claim 1, characterized in that, A motor is installed on the frame (1), one end of the take-up roller (2) extends out of the frame (1), and the output shaft of the motor is connected to the part of the take-up roller (2) that extends out of the frame (1).

5. A packaging film cutting device according to claim 1, 2, 3, or 4, characterized in that, The frame (1) is provided with rotating grooves (6) on both sides. The two ends of the take-up roller (2) are respectively rotatably arranged in the two rotating grooves (6). A limiting bolt (7) is detachably inserted between the two side walls of the groove opening of the rotating groove (6).

6. A packaging film cutting device according to claim 1, 2, 3, or 4, characterized in that, The frame (1) has two columns (1a) on both sides, and the top of the column (1a) has an installation groove (1a1) opened from top to bottom. The two ends of the feeding roller (4) are respectively rotatably set in the installation groove (1a1) of the two columns (1a).

7. A packaging film cutting device according to claim 6, characterized in that, The frame (1) includes a base plate (1b) set at the bottom of two columns (1a) and a working frame (1c) set in the middle of the two columns (1a). The base plate (1b) and the working frame (1c) are arranged parallel to each other vertically, and a storage space (8) is formed between the base plate (1b) and the working frame (1c). Several parallel pairs of partitions (1c 1) are arranged at intervals in the working frame (1c).

8. A packaging film cutting device according to claim 7, characterized in that, The bottom of the base plate (1b) is provided with pulleys (9) with brakes at the four corners.

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