Automatic cutting device for PE protective film
The design of the electric telescopic rod and negative pressure fan is started by starting the adsorption of the electric telescopic rod and negative pressure fan, which solves the safety hazards and unstable cutting quality of the traditional PE protective film cutting device, and achieves safety and cutting accuracy, avoiding material damage.
Patent Information
- Application Number
- CN202422494549.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-16
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-10-16
AI Technical Summary
Traditional PE protective film cutting devices have safety hazards and unstable cutting quality, especially during the cutting process, the hand is prone to the cutting head and the limiting method may damage the membrane body.
A PE protective film automatic cutting device is designed, using dual control switch to start the electric telescopic rod and cutter, and combined with the negative pressure fan to absorb the membrane body for non-contact limiting to ensure safety and cutting stability.
Improves operating safety, ensures that both hands are not close to the cutting head during the cutting process, achieves accurate cutting of different lengths, and avoids material damage through negative pressure adsorption, improving cutting quality.
Smart Images
Figure CN223162922U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of protective film cutting, in particular to an automatic cutting device for PE protective film. Background Art
[0002] PE protective film, whose full name is Polyethylene, is the simplest macromolecular organic compound in structure and the most widely used macromolecular material in the world today. The PE protective film is based on a special polyethylene (PE) plastic film and is divided into high-density polyethylene protective film, medium-density polyethylene and low-density polyethylene according to different densities;
[0003] When it is in use, a cutting device is needed to cut it. The traditional cutting device generally controls the electric telescopic rod to drive the cutter head to move down for cutting. During this cutting process, since the cutting part is completely exposed, if the user's hand is just below the cutter head when the cutter head moves down, there is a great potential safety hazard. In addition, when cutting, if the protective film is not limited in any way, it is easy to affect the cutting quality, and the traditional pressure limiting method may damage the film body. Content of the Utility Model
[0004] The purpose of the utility model is to solve the defects existing in the prior art, and a kind of automatic cutting device for PE protective film is proposed. When the device is in use, it is convenient to cut different lengths. In addition, by using two control switches, the safety of cutting is effectively improved.
[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:
[0006] An automatic cutting device for PE protective film, including a support frame, two mounting plates are symmetrically and fixedly connected to the upper end of the support frame, and a winding and unwinding roller is installed between the two mounting plates; a cutting mechanism, the cutting mechanism includes a vertical plate fixedly connected to the upper end of the support frame, a support plate is fixedly connected to the upper end of the vertical plate, a U-shaped frame is fixedly connected to the upper end of the support plate, an electric telescopic rod is installed at the lower end of the horizontal part of the U-shaped frame, a cutter is fixedly connected to the telescopic end of the electric telescopic rod, and a slitting groove is opened at the upper end of the support plate; a limiting mechanism, the limiting mechanism is used to improve the stability of cutting.
[0007] Preferably, a scale bar is arranged on the front side of the support plate.
[0008] Preferably, the limiting mechanism includes two strip-shaped cavities opened in the support plate, an air suction port is opened at the inner top of the strip-shaped cavity, the two strip-shaped cavities are communicated through a U-shaped pipe, a negative pressure fan is installed at the lower end of the support plate, and the air inlet end of the negative pressure fan is communicated with the inside of the U-shaped pipe.
[0009] Preferably, the two strip-shaped cavities are respectively located on both sides of the slitting groove.
[0010] Preferably, a connecting pipe is connected to the horizontal part of the U-shaped pipe, and a manual valve is installed in the connecting pipe.
[0011] Preferably, two control switches are symmetrically installed on the front side of the support frame, and the two control switches jointly control the opening and closing of the electric telescopic rod.
[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0013] 1. By designing that two control switches need to be pressed simultaneously to start the electric telescopic rod and the cutting knife, it is ensured that when the user operates, both hands will not be under the cutting knife, thus effectively avoiding potential injuries during the cutting process and significantly improving the safety of operation.
[0014] 2. Align the right end face of the film body with the position of the scale bar. This design makes the cutting operation more accurate and can meet the cutting requirements of different length requirements.
[0015] 3. By generating negative pressure in the strip-shaped cavity with a negative pressure fan and firmly adsorbing the film body with the air suction port, this non-contact fixing method is not only stable and reliable, but also avoids damage to the material that may be caused by traditional clamping methods, ensuring the cutting quality and the integrity of the material. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 is a schematic structural diagram of an automatic cutting device for PE protective film proposed by the present utility model;
[0017] Figure 2 is Figure 1 a schematic sectional view of;
[0018] Figure 3 is Figure 2 a bottom view of.
[0019] In the figure: 1 support frame, 2 vertical plate, 3 support plate, 4 U-shaped frame, 5 electric telescopic rod, 6 cutting knife, 7 slitting groove, 8 scale bar, 9 control switch, 10 mounting plate, 11 winding and unwinding roller, 12 air suction port, 13 strip-shaped cavity, 14 connecting pipe, 15 negative pressure fan, 16 U-shaped pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.
[0021] Refer to Figures 1 - 3, an automatic cutting device for PE protective film, including a support frame 1. At the upper end of the support frame 1, two mounting plates 10 are symmetrically and fixedly connected. A winding roller 11 is installed between the two mounting plates 10. The installation here is the installation method of the winding roller 11 and the mounting plate 10 in the prior art (for example, rotating shafts are installed on the opposite sides of the mounting plate 10, and the rotating shaft of the winding roller 11 is installed with screws). After the installation is completed, it can ensure rotational connection;
[0022] Among them, it also includes a cutting mechanism. The cutting mechanism includes a vertical plate 2 fixedly connected to the upper end of the support frame 1. A support plate 3 is fixedly connected to the upper end of the vertical plate 2. A U-shaped frame 4 is fixedly connected to the upper end of the support plate 3. An electric telescopic rod 5 is installed at the lower end of the horizontal part of the U-shaped frame 4. A cutting knife 6 is fixedly connected to the telescopic end of the electric telescopic rod 5. A slitting groove 7 is opened at the upper end of the support plate 3. A scale bar 8 is arranged on the front side of the support plate 3. The initial scale of the scale bar 8 is the distance from the slitting groove 7 to this scale;
[0023] Among them, two control switches 9 are symmetrically installed on the front side of the support frame 1. The two control switches 9 jointly control the opening and closing of the electric telescopic rod 5. The two control switches 9 are arranged in series. Only when both are pressed simultaneously can the electric telescopic rod 5 be powered on. Using a PLC program control, the electric telescopic rod 5 can extend and contract reciprocally after being powered on;
[0024] Among them, it also includes a limiting mechanism. The limiting mechanism is used to improve the stability of cutting. The limiting mechanism includes two strip-shaped cavities 13 opened inside the support plate 3. An air suction port 12 is opened at the inner top of the strip-shaped cavity 13. The two strip-shaped cavities 13 are connected through a U-shaped pipe 16. A negative pressure fan 15 is installed at the lower end of the support plate 3. The air inlet end of the negative pressure fan 15 is communicated with the inside of the U-shaped pipe 16. The two strip-shaped cavities 13 are respectively located on both sides of the slitting groove 7;
[0025] Among them, a connecting pipe 14 is communicated with the horizontal part of the U-shaped pipe 16. A manual valve is installed inside the connecting pipe 14.
[0026] In the present utility model, during use, pull the film body to make it flat on the upper end surface of the support plate 3, and according to the length to be cut, align the right end surface with the corresponding position of the scale bar 8. Then start the negative pressure fan 15, which can generate negative pressure in the strip-shaped cavity 13 and adsorb the film body through the air suction port 12. Then press the two control switches 9 simultaneously, and the electric telescopic rod 5 can first extend and then contract. Through the cutting knife 6, the cutting operation can be realized. During this operation, since the user's two hands press the control switches 9 simultaneously and will not be placed below the cutting knife 6, the overall safety is improved.
[0027] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, making equivalent substitutions or changes should be covered within the protection scope of the present utility model.
Claims
1. An automatic cutting device for PE protective film, characterized in that, Including: A support frame (1), at the upper end of the support frame (1), two mounting plates (10) are symmetrically and fixedly connected, and a winding and unwinding roller (11) is installed between the two mounting plates (10); A cutting mechanism, the cutting mechanism includes a vertical plate (2) fixedly connected to the upper end of the support frame (1), a support plate (3) is fixedly connected to the upper end of the vertical plate (2), a U-shaped frame (4) is fixedly connected to the upper end of the support plate (3), an electric telescopic rod (5) is installed at the lower end of the horizontal part of the U-shaped frame (4), a cutting knife (6) is fixedly connected to the telescopic end of the electric telescopic rod (5), and a slitting groove (7) is opened at the upper end of the support plate (3); A limiting mechanism, the limiting mechanism is used to improve the stability of cutting.
2. The automatic cutting device for PE protective film according to claim 1, characterized in that, A scale bar (8) is arranged on the front side of the support plate (3).
3. The automatic cutting device for PE protective film according to claim 1, characterized in that, The limiting mechanism includes two strip-shaped cavities (13) opened inside the support plate (3), an air suction port (12) is opened at the inner top of the strip-shaped cavity (13), the two strip-shaped cavities (13) are communicated through a U-shaped pipe (16), a negative pressure fan (15) is installed at the lower end of the support plate (3), and the air inlet end of the negative pressure fan (15) is communicated with the inside of the U-shaped pipe (16).
4. An automatic cutting device for a PE protective film according to claim 3, characterized in that, The two strip-shaped cavities (13) are respectively located on both sides of the slitting groove (7).
5. The automatic cutting device for a PE protective film according to claim 3, characterized in that, A connecting pipe (14) is communicated with the horizontal part of the U-shaped pipe (16), and a manual valve is installed in the connecting pipe (14).
6. The automatic cutting device for a PE protective film according to claim 1, wherein, Two control switches (9) are symmetrically installed on the front side of the support frame (1), and the two control switches (9) jointly control the opening and closing of the electric telescopic rod (5).