Positioning device for cutting protective film

By designing limiting and cutting components, the problems of inaccurate positioning and difficult maintenance of the protective film cutting device are solved, achieving high-precision and high-efficiency cutting operations, and improving production efficiency and equipment reliability.

CN223989560UActive Publication Date: 2026-03-13HENAN ZHONGSICHUANG PACKAGING TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-10
Publication Date
2026-03-13

AI Technical Summary

Technical Problem

Existing protective film cutting devices suffer from problems such as inaccurate cutting positioning, complex structure, inconvenient operation, and difficult maintenance, resulting in material waste and low production efficiency.

Method used

The design employs a combination of limiting components, cutting components, and positioning components, including limiting blocks, locking parts, fixed shafts, connecting springs, pressing blocks, blades, elastic rods, telescopic sleeves, racks, push blocks, and elastic blocks working together to achieve precise positioning and efficient cutting.

Benefits of technology

It improves the accuracy of cutting positioning, reduces material waste, increases production efficiency, lowers labor costs, ensures cutting quality, simplifies maintenance processes, extends equipment life, and enhances equipment adaptability and reliability.

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Abstract

The utility model provides a positioning device for cutting a protective film, which belongs to the technical field of positioning devices and comprises a fixed shell, a rolling sleeve in contact with an inner cavity of the fixed shell, a limiting component inserted in the center of the rolling sleeve, a connecting shell communicated with the side surface of the fixed shell, a cutting component arranged on the surface of the connecting shell and a positioning component matched with the limiting component for use. Through the arrangement of the positioning assembly, the cutting assembly and the limiting assembly, high-precision and high-efficiency cutting operation is achieved, the accuracy of cutting positioning is improved, and material waste is reduced; due to automatic and semi-automatic operation, the production efficiency is improved, and the labor cost is reduced; due to the design of the cutting assembly, the cutting quality is guaranteed, and burrs and uneven cutting are avoided; the adjustability of the positioning assembly enhances the adaptability of the equipment, and the equipment is suitable for protective films of various sizes and thicknesses; the overall structure simplifies the maintenance process and improves the stability and reliability of the equipment.
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Description

Technical Field

[0001] This utility model belongs to the field of positioning device technology, specifically relating to a positioning device for cutting protective film. Background Technology

[0002] A positioning device for cutting protective films is a mechanical device specifically designed for the precise cutting of protective films. It is typically used in the production process to ensure that the protective film can be cut to a predetermined size and shape to meet the needs of different products and applications. Protective films are widely used in electronic products, building materials, automotive parts and other fields to protect surfaces from scratches, contamination or other damage.

[0003] In existing technologies, the cutting of protective films often faces the problem of inaccurate cutting positioning, which leads to material waste and reduced product quality. In addition, existing cutting devices are not easy to operate due to their complex structure, and maintenance is cumbersome and difficult due to the large number of parts and the compact space, which increases equipment downtime and maintenance costs, affecting production efficiency and equipment lifespan. Therefore, a positioning device for cutting protective films is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a positioning device for cutting protective film, which aims to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A positioning device for cutting protective film includes a fixed shell, a sleeve that contacts the inner cavity of the fixed shell, a limiting component inserted into the center of the sleeve, a connecting shell communicating with the side surface of the fixed shell, a cutting component disposed on the surface of the connecting shell, and a positioning component used in conjunction with the limiting component.

[0007] As a preferred embodiment of this utility model, the limiting component includes a limiting block fixedly connected to the inner wall of the sleeve, a locking member in contact with the end of the limiting block, a fixed shaft inserted into the center of the sleeve, a connecting spring fixedly connected to the bottom of the fixed shaft, and a mounting plate locking with the locking member.

[0008] In a preferred embodiment of this utility model, the limiting block and the engaging member are symmetrically arranged on both sides of the fixed shaft, and the fixed shaft is in contact with the mounting plate.

[0009] As a preferred embodiment of the present invention, the cutting assembly includes a pressing block, a blade fixedly connected to the bottom of the pressing block, an elastic rod disposed on the surface of the blade, and a cutting groove formed in the inner wall of the connecting shell.

[0010] As a preferred embodiment of this utility model, two sets of elastic rods are provided, respectively disposed on both sides of the blade, and fixedly connected to the inner wall of the connecting shell.

[0011] As a preferred embodiment of this utility model, the positioning component includes a telescopic sleeve fixedly connected to the fixed shell, a rack inserted into the inner cavity of the telescopic sleeve, a push block fixedly installed at the end of the rack, a rotating block inserted into the surface of the telescopic sleeve, and an elastic block fixedly connected to the rotating block.

[0012] In a preferred embodiment of this utility model, two sets of racks are arranged opposite each other, and the elastic block is in contact with the racks.

[0013] Compared with existing technologies, the beneficial effects of this utility model are as follows: By incorporating positioning, cutting, and limiting components, high-precision and high-efficiency cutting operations are achieved, improving the accuracy of cutting positioning and reducing material waste; automated and semi-automated operation enhances production efficiency and reduces labor costs; the design of the cutting components ensures cutting quality, avoiding burrs and uneven cutting; the adjustability of the positioning components enhances the adaptability of the equipment, making it suitable for protective films of various sizes and thicknesses; the overall structure simplifies the maintenance process, improves the stability and reliability of the equipment, thereby enhancing the overall performance of the production line and the market competitiveness of the products. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a partial structural diagram of the fixing shell of this utility model;

[0017] Figure 3 This is a schematic diagram of the cutting component structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the limiting component structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the positioning component structure of this utility model.

[0020] In the diagram: 101, fixed shell; 102, sleeve; 103, limiting component; 104, connecting shell; 105, cutting component; 106, positioning component; 103a, limiting block; 103b, locking component; 103c, fixed shaft; 103d, connecting spring; 103e, mounting plate; 105a, pressing block; 105b, blade; 105c, elastic rod; 105d, cutting groove; 106a, telescopic sleeve; 106b, rack; 106c, push block; 106d, rotating block; 106e, elastic block. Detailed Implementation

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0023] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0024] Example

[0025] Reference Figures 1-5 This is an embodiment of the present invention, which provides a positioning device for cutting protective film, comprising:

[0026] The components include a fixed housing 101, a sleeve 102 that contacts the inner cavity of the fixed housing 101, a limiting component 103 that is inserted into the center of the sleeve 102, a connecting housing 104 that communicates with the side surface of the fixed housing 101, a cutting component 105 that is disposed on the surface of the connecting housing 104, and a positioning component 106 that is used in conjunction with the limiting component 103.

[0027] The limiting assembly 103 includes a limiting block 103a fixedly connected to the inner wall of the sleeve 102, a locking member 103b in contact with the end of the limiting block 103a, a fixed shaft 103c inserted into the center of the sleeve 102, a connecting spring 103d fixedly connected to the bottom of the fixed shaft 103c, and a mounting plate 103e that engages with the locking member 103b. The limiting block 103a and the locking member 103b are symmetrically arranged on both sides of the fixed shaft 103c, and the fixed shaft 103c is in contact with the mounting plate 103e.

[0028] Furthermore, the design of the limiting component 103 enables precise cutting positioning. The symmetrically arranged limiting blocks 103a and locking parts 103b on both sides of the fixed shaft 103c ensure stable and reliable positioning. The cooperation between the connecting spring 103d and the mounting plate 103e makes the device flexible to adjust and easy to operate. This design not only improves cutting accuracy and reduces material waste, but also simplifies the maintenance process and improves work efficiency, thereby ensuring a smooth production process and stable product quality.

[0029] The cutting assembly 105 includes a pressing block 105a, a blade 105b fixedly connected to the bottom of the pressing block 105a, an elastic rod 105c disposed on the surface of the blade 105b, and a cutting groove 105d opened on the inner wall of the connecting shell 104. Two sets of elastic rods 105c are disposed on both sides of the blade 105b and fixedly connected to the inner wall of the connecting shell 104.

[0030] Preferably, the cutting component 105 of the protective film cutting positioning device is designed to achieve precise and stable cutting through the coordinated action of the pressing block 105a, the blade 105b, and the elastic rod 105c. The setting of two sets of elastic rods 105c ensures the smooth movement of the blade 105b, reduces vibration, and improves cutting quality. The opening of the cutting groove 105d facilitates the precise positioning and replacement of the blade 105b, improving the ease of operation.

[0031] The positioning assembly 106 includes a telescopic sleeve 106a fixedly connected to the fixed housing 101, a rack 106b inserted into the inner cavity of the telescopic sleeve 106a, a push block 106c fixedly installed at the end of the rack 106b, a rotating block 106d inserted into the surface of the telescopic sleeve 106a, and an elastic block 106e fixedly connected to the rotating block 106d. Two sets of racks 106b are arranged opposite each other, and the elastic block 106e is in contact with the racks 106b.

[0032] It should be noted that the precise positioning of the protective film is achieved through the coordinated use of the positioning component 106. The two sets of opposing racks 106b and elastic blocks 106e provide a stable driving force, ensuring the alignment accuracy during the cutting process. This design improves cutting efficiency and reduces errors caused by inaccurate positioning. At the same time, the buffering effect of the elastic blocks 106e extends the service life of the equipment. Overall, the positioning component 106 simplifies the operation process, improves cutting accuracy, and enhances the reliability and ease of maintenance of the equipment.

[0033] In use, the protective film is initially positioned by the sleeve 102 and the limiting component 103 inside the fixed shell 101. The limiting block 103a and the locking piece 103b are symmetrically arranged on both sides of the fixed shaft 103c. Flexible adjustment is achieved through the cooperation of the connecting spring 103d and the mounting plate 103e. The pressing block 105a and the blade 105b in the cutting component 105, with the assistance of the elastic rod 105c, make precise cuts through the cutting groove 105d. The positioning component 106 provides stable pushing force and precise positioning through the coordinated work of the telescopic sleeve 106a, the rack 106b, the push block 106c, the rotating block 106d and the elastic block 106e, ensuring the efficiency and accuracy of the cutting process.

[0034] In summary, the design of the limiting component 103, the cutting component 105, and the positioning component 106 achieves high-precision and high-efficiency cutting operations, improves the accuracy of cutting positioning, reduces material waste, ensures the stability of the cutting process, improves cutting quality, simplifies the operation process, improves work efficiency, enhances the reliability and ease of maintenance of the equipment, and extends its service life.

[0035] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0036] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0037] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0038] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A positioning device for cutting a protective film, characterized by: The utility model relates to a fixed shell (101), the sleeve (102) of contact with the fixed shell (101) inner chamber, the limiting component (103) of inserting in the sleeve (102) center, the connecting shell (104) of intercommunication in the fixed shell (101) side surface, the cutting assembly (105) of setting in the connecting shell (104) surface and the positioning component (106) of cooperation limiting component (103) use. The limiting component (103) includes the limiting block (103a) fixedly connected in the inner wall of the sleeve (102), the clamping piece (103b) in contact with the end of the limiting block (103a), the fixed shaft (103c) inserted in the center of the sleeve (102), the connecting spring (103d) fixedly connected in the bottom of the fixed shaft (103c), and the mounting plate (103e) clamped with the clamping piece (103b).

2. The positioning device for cutting a protective film according to claim 1, wherein: The limiting block (103a) and the clamping piece (103b) are symmetrically arranged on both sides of the fixed shaft (103c), and the fixed shaft (103c) is in contact with the mounting plate (103e).

3. The positioning device for cutting a protective film according to claim 2, wherein: The cutting assembly (105) includes a pressing block (105a), a blade (105b) fixedly connected to the bottom of the pressing block (105a), an elastic rod (105c) arranged on the surface of the blade (105b), and a cutting groove (105d) opened in the inner wall of the connecting shell (104).

4. The positioning device for cutting a protective film according to claim 3, wherein: The elastic rod (105c) is provided with two groups, which are arranged on both sides of the blade (105b) and fixedly connected with the inner wall of the connecting shell (104).

5. The positioning device for cutting a protective film according to claim 4, wherein: The positioning component (106) includes a telescopic sleeve (106a) fixedly connected with the fixed shell (101), a rack (106b) inserted into the inner cavity of the telescopic sleeve (106a), a push block (106c) fixedly installed at the end of the rack (106b), a rotating block (106d) inserted into the surface of the telescopic sleeve (106a), and an elastic block (106e) fixedly connected with the rotating block (106d).

6. The positioning device for cutting a protective film according to claim 5, wherein: The rack (106b) is oppositely provided with two groups, and the elastic block (106e) is in contact with the rack (106b).

7. The positioning device for cutting a protective film according to claim 6, wherein: ​