Cutter device for special-shaped slitting of vacuum bag film
By designing a cutting tool device for irregularly shaped cutting of vacuum bag films, and utilizing the cooperation of a drive cylinder and pressure rollers, the cutting tool can achieve irregular cutting of the film, thus solving the problem of vacuum bag film waste and improving efficiency and environmental friendliness.
Patent Information
- Application Number
- CN202520298022.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-24
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-02-24
AI Technical Summary
Existing technologies suffer from significant waste when cutting vacuum bag films, especially in wind turbine blade production, where irregularly shaped films cannot be cut efficiently, leading to resource waste and increased processing steps.
Design a cutting tool device for irregular cutting of vacuum bag film. By controlling the movement of the cutting tool holder by driving the cylinder, and combining the cooperation of the pressure roller and the rubber roller, different speed ratios between the cutting tool and the film can be achieved to form different slopes or curvatures, so as to realize irregular cutting.
It reduces the cutting process for downstream users, decreases film waste, and improves cutting efficiency and environmental value.
Smart Images

Figure CN223791109U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vacuum bag film manufacturing, specifically to a cutting tool device for irregularly shaped cutting of vacuum bag films. Background Technology
[0002] During the use of vacuum bag films, the various shapes of the solidified components necessitate film cutting, often resulting in waste. This is particularly evident in the production of wind turbine blades, where the blade tip and root vary significantly in size, reaching lengths of over 100 meters and widths of 6-10 meters. In such cases, more than 30% of the film needs to be cut, which is not only time-consuming and labor-intensive but also leads to substantial resource waste.
[0003] Based on this, the present invention designs a slitting device. This device can slit the film into corresponding irregular-shaped films according to the size and shape of the customer's parts.
[0004] In this way, on the one hand, the cutting process for downstream users can be reduced; on the other hand, the amount of film waste can also be reduced, which has certain environmental value. Utility Model Content
[0005] In order to overcome the above-mentioned defects of the prior art, the purpose of this utility model is to provide a cutting tool device for slitting irregularly shaped films in vacuum bags.
[0006] To achieve the objective of this utility model, the technical solution adopted is as follows:
[0007] A cutting tool device for irregularly shaped cutting of vacuum bag films, comprising:
[0008] A support frame, on which a drive cylinder is provided for driving the tool holder to move up and down;
[0009] An external drive device drives the tool holder to move at a constant or variable speed along the motion track in the front-back direction.
[0010] A tool is held in the clamping opening below the tool holder;
[0011] The cutting tool is positioned with its tip pointing downwards;
[0012] The vacuum bag film to be cut is unfolded by the cooperation of the pressure roller and the rubber roller for the cutter to cut;
[0013] Different speed ratios between the cutting tool and the vacuum bag film can create different slopes or curvatures in the cutting lines of the vacuum bag film.
[0014] In a preferred embodiment of this utility model, the vacuum bag film to be cut is released by the unwinding device and then guided by several guide rollers to the space between the first pressure roller and the first adhesive roller.
[0015] In a preferred embodiment of this utility model, the cut vacuum bag film is exported through the space between the second pressure roller and the second rubber roller, and then guided to the inlet of the winding device by several guide rollers.
[0016] In a preferred embodiment of this utility model, the unwinding device guides the unwinding device through a first guide roller.
[0017] In a preferred embodiment of this utility model, the cut vacuum bag film is exported through the space between the second pressure roller and the second glue roller and then guided by the second guide roller, the third guide roller and the fourth guide roller.
[0018] The beneficial effects of this utility model are as follows:
[0019] This invention relates to a cutting device for irregularly shaped vacuum bag films. By varying the speed ratio between the cutting tool and the vacuum bag film, different slopes or curvatures can be created on the cutting lines of the vacuum bag film. This cutting device reduces the cutting steps required by downstream users and minimizes waste of vacuum bag film. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 .
[0021] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 .
[0022] Figure 3 This is a schematic diagram of the cut part of this utility model. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit its scope. Furthermore, in the following descriptions, well-known structures and technologies have been omitted to avoid unnecessary confusion regarding the concept of this utility model.
[0024] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," 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. They do not 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. Furthermore, terms such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0025] As shown in Figures 1-3, a cutting tool device for slitting irregular shapes of vacuum bag films includes a support frame 100, on which a drive cylinder 120 is provided for driving the cutting tool holder 110 to move up and down.
[0026] An external drive device drives the tool holder 110 to move at a constant or variable speed along the motion track 130 in the forward and backward direction.
[0027] A cutting tool 140 for cutting vacuum bag film 1 is held in the clamping port below the cutting tool holder 110.
[0028] The cutting tool 140 is positioned with its cutting head facing downwards to contact or separate from the vacuum bag film 1 to be cut.
[0029] The vacuum bag film 1 to be cut is unfolded by the cooperation of the pressure roller and the rubber roller so that the cutting head of the cutter 140 can cut it.
[0030] Specifically, the vacuum bag film 1 to be cut is released by the unwinding device 400 and guided by the first guide roller 510 to the space between the first pressure roller 210 and the first adhesive roller 310.
[0031] The cut vacuum bag film 1 is exited through the space between the second pressure roller 220 and the second adhesive roller 320, and then guided to the entrance of the winding device 600 by the second guide roller 520, the third guide roller 530 and the fourth guide roller 540. Multiple winding devices 600 can be provided as needed.
[0032] Different speed ratios between the cutter 140 and the vacuum bag film 1 can cause the cutting line of the vacuum bag film to form different slopes or curvatures.
[0033] Because of the above structure, the working principle of this utility model is as follows:
[0034] After the vacuum bag film 1 to be cut is released by the unwinding device 400, it is guided by the first guide roller 510 to the space between the first pressure roller 210 and the first adhesive roller 310. Then, the drive cylinder 120 drives the control tool holder 110 to press down until it contacts the vacuum bag film 1 to be cut.
[0035] At this time, the tool holder 110 is driven by an external drive device to move at a constant or variable speed along the motion track 130 in the front and back direction for cutting.
[0036] The cut vacuum bag film 1 is exported through the space between the second pressure roller 220 and the second adhesive roller 320, and then guided to the entrance of the winding device 600 through the second guide roller 520, the third guide roller 530 and the fourth guide roller 540.
[0037] Different speed ratios between the cutter 140 and the vacuum bag film 1 can cause the cutting line of the vacuum bag film 1 to form different slopes or curvatures.
[0038] The final cut vacuum bag film 1 can be a regular geometric shape or an irregular shape, specifically as follows: Figure 3 As shown.
[0039] The above shows and describes the basic principles, main features, and advantages of this utility model.
[0040] 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 illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope. All such changes and modifications fall within the scope of this utility model as defined by the appended claims and their equivalents.
Claims
1. A knife device for profile slitting of vacuum bag film, characterized in that, The utility model relates to a kind of cutter device for vacuum bag film profile slitting, including: A support frame is provided with driving cylinder for driving cutter holder seat to move up and down; External driving device drives the cutter holder seat to move at uniform speed or variable speed along the movement track in front-back direction; The cutter is clamped on the clamping port below the cutter holder seat; The cutter head of the cutter is arranged downward; The vacuum bag film to be cut is developed by the cooperation of press roller and rubber roller to provide the cutter for slitting; Different speed ratio between cutter and vacuum bag film can make the cutting line of vacuum bag film form different slope or radian.
2. A knife device for profile slitting of vacuum bag film as claimed in claim 1, characterized in that, The vacuum bag film to be cut is discharged by unwinding device and guided to the space between first press roller and first rubber roller by several guide rollers.
3. A knife apparatus for the slitting of a vacuum bag film according to claim 1, wherein, The finished vacuum bag film is guided out through the space between second press roller and second rubber roller and then guided to the inlet of winding device by several guide rollers.
4. The knife apparatus for the profile slitting of vacuum bag film of claim 1, wherein, The unwinding device is guided by the first guide roller after discharge.
5. The cutter device for vacuum bag film profile slitting according to claim 1, wherein, The finished vacuum bag film is guided out through the space between second press roller and second rubber roller and then guided by the second guide roller, third guide roller and fourth guide roller.