Detachable cutting die mechanism
By using a detachable snap-on fixing mechanism and a V-shaped bending blade structure, the problems of the inability to replace the blade after wear and the sticking of the positioning point in traditional die-cutting mechanisms are solved, realizing convenient replacement of the blade and complete cutting of materials, thereby improving production efficiency and finished product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUNAN DRAGON BAGS CO LTD
- Filing Date
- 2025-06-18
- Publication Date
- 2026-05-15
AI Technical Summary
Traditional die-cutting mechanisms are one-piece structures, which means that the die body cannot be replaced separately after wear, increasing usage costs and wasting resources. In addition, the notch design at the positioning point causes material to stick together, reducing production efficiency and product quality.
It adopts a detachable snap-on fixing mechanism and a V-shaped bent blade structure to achieve convenient blade replacement and ensure complete one-time cutting of materials at the positioning point.
By easily replacing the blade, maintenance costs are reduced, the continuity of die-cutting operations and the quality of finished products are improved, material sticking is avoided, and production efficiency is increased.
Smart Images

Figure CN224239850U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of die-cutting technology, and in particular to a detachable die-cutting mechanism. Background Technology
[0002] Die-cutting mechanisms are key components used in the packaging and printing industries for die-cutting processes. Traditional die-cutting dies typically employ a one-piece structure design, where the die body and frame are welded or integrally machined and fixed into an inseparable whole. In the die body structure, the bottom, where critical points for material positioning (such as crease intersections) are often designed with a notch shape to meet specific processing requirements.
[0003] The aforementioned traditional die-cutting molds have significant shortcomings: First, the one-piece structure means that when the die body (especially the cutting edge) fails due to long-term wear, it cannot be replaced individually. The entire die must be scrapped and a new die-cutting mold must be manufactured, significantly increasing usage costs and wasting resources. Second, although the notch design at the positioning point at the bottom of the die body can achieve the positioning function, the notch area cannot completely cut off the material during the die-cutting process, resulting in local adhesion. This requires manual removal or secondary processing, which not only reduces production efficiency but also easily affects the quality of the finished product due to inconsistent operation. Utility Model Content
[0004] This invention provides a die-cutting mechanism that allows for easy replacement of the die body and enables complete cutting at the positioning point in one operation.
[0005] The technical solution adopted by this utility model is as follows: a detachable die-cutting mechanism, including a frame and a die body installed on the inner side of the frame. The side walls of the frame and the die body are provided with fixing holes and fixing buckles are installed at the fixing holes. The side wall of the frame is provided with a groove below the fixing hole. The groove is provided with a guide post fixedly connected to the frame. An L-shaped buckle is slidably connected to the guide post. The L-shaped buckle cooperates with the fixing buckle, and the bottom of the L-shaped buckle is provided with two springs that are both connected to the frame.
[0006] As a further improvement of this utility model, the bottom of the blade is provided with a blade edge and has a V-shaped bending structure at the positioning point.
[0007] As a further improvement of this utility model, the inner side of the frame is provided with a blade groove for mounting the blade body, and the blade groove is adapted to the blade body.
[0008] As a further improvement of this utility model, the fixing buckle passes through the frame and the blade body and has an arc-shaped buckle groove at one end that matches the top of the L-shaped buckle.
[0009] As a further improvement of this utility model, both springs are located in the groove and are respectively located on both sides of the guide post.
[0010] The beneficial effects of this utility model are as follows: Through the coordinated design of the detachable snap-on fixing mechanism and the V-shaped bending blade structure, this utility model enables convenient replacement of the blade to reduce maintenance costs, while ensuring one-time complete cutting of the material positioning point. It fundamentally solves the production interruption and secondary processing problems caused by the structural defects of traditional die-cutting molds, and significantly improves the continuity of die-cutting operations and the quality of finished products. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the overall structure of a detachable die-cutting mechanism according to this utility model;
[0012] Figure 2 This utility model relates to a detachable die-cutting mechanism. Figure 1 Another perspective illustration;
[0013] Figure 3 This is an exploded view of the overall structure of a detachable die-cutting mechanism according to this utility model;
[0014] Figure 4 This utility model relates to a detachable die-cutting mechanism. Figure 3 Another perspective illustration;
[0015] Figure 5 This is a partial cross-sectional view of a detachable die-cutting mechanism according to this utility model.
[0016] As shown in the figure: 1. Frame; 2. Blade body; 3. Fixing hole; 4. Fixing buckle; 5. Groove; 6. Guide post; 7. L-shaped buckle; 8. Spring; 9. Positioning point. Detailed Implementation
[0017] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly mentioned in this specification are defined relative to their structure and are relative concepts. Therefore, they may vary depending on their location and usage; thus, these or other directional terms should not be interpreted as restrictive terms.
[0018] The singular forms “a,” “the,” and “the” used in this specification are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes one or more of the associated listed items, any or all possible combinations thereof.
[0019] To make the technical problems to be solved, the technical solutions, and the beneficial effects of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments described herein are merely illustrative and not intended to limit the scope of this application.
[0020] This utility model provides the following: Figure 1-5 The detachable die-cutting mechanism shown includes a frame 1 and a die body 2 installed inside the frame 1. The method of fixing the frame 1 and the die body 2 in this application is not limited to the methods described below; connection by screws or other means is also within the scope of protection of this application. Fixing holes 3 are provided on the side walls of both the frame 1 and the die body 2, and fixing buckles 4 are installed at the fixing holes 3. A groove 5 is provided on the side wall of the frame 1 below the fixing holes 3. A guide post 6, fixedly connected to the frame 1, is provided in the groove 5. An L-shaped buckle 7, slidably connected to the guide post 6, is passed through the guide post 6. The L-shaped buckle 7 cooperates with the fixing buckle 4, and two springs 8, both connected to the frame 1, are provided at the bottom of the L-shaped buckle 7.
[0021] like Figure 1-5 As shown, the blade body 2 of this utility model has a blade at the bottom and a V-shaped bending structure at the positioning point 9, which enables the blade body 2 to completely cut the material at the positioning point 9 in one go during the die-cutting process.
[0022] like Figure 2 , Figure 4 , Figure 5 As shown, in this utility model, the inner side of the frame 1 is provided with a blade groove for mounting the blade body 2, and the blade groove is adapted to the blade body 2, so that the blade body 2 can be accurately installed in the frame 1, ensuring the accuracy and stability of the installation.
[0023] like Figure 1-5 As shown, in this utility model, the fixing buckle 4 passes through the frame 1 and the blade body 2 and has an arc-shaped buckle groove at one end that matches the top of the L-shaped buckle 7. When the L-shaped buckle 7 slides upward under the action of the spring 8, its top end can accurately fit into the arc-shaped buckle groove, thereby cooperating with the fixing buckle 4 to firmly connect the frame 1 and the blade body 2 together.
[0024] like Figure 1-3 and Figure 5 As shown, in this utility model, both springs 8 are located in the groove 5 and on both sides of the guide post 6, which ensures that the L-shaped buckle 7 is subjected to uniform force when sliding on the guide post 6, avoiding jamming or displacement, so that the L-shaped buckle 7 can stably cooperate with the fixing buckle 4, ensuring the reliability of the connection between the blade body 2 and the frame 1.
[0025] Working Principle: In practical implementation, the blade 2 is first aligned with the blade groove on the inner side of the frame 1, ensuring accurate installation of the blade 2 within the frame 1. At this point, the fixing hole 3 aligns with the frame 1 and the blade 2, and the fixing buckle 4 passes through both the frame 1 and the blade 2. Next, due to the elasticity of the spring 8, the L-shaped buckle 7 slides upwards on the guide post 6, its top end accurately engaging the arc-shaped buckle groove at one end of the fixing buckle 4, thus firmly connecting the frame 1 and the blade 2 together. During die-cutting, the V-shaped bending structure at the positioning point 9 at the bottom of the blade 2 enables a complete one-time cut at the material positioning point 9, avoiding the local adhesion problem caused by the notch design of traditional die-cutting molds. This eliminates the need for manual removal or secondary processing, improving production efficiency and finished product quality. When the blade body 2 (especially the blade edge) fails due to long-term wear, simply apply a downward force to the L-shaped buckle 7 to overcome the elastic force of the spring 8, causing the top of the L-shaped buckle 7 to disengage from the arc-shaped buckle groove, and the fixing buckle 4 can be removed. This allows the blade body 2 to be easily removed from the frame 1 for replacement, avoiding the scrapping of the entire die and reducing usage costs and resource waste.
[0026] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A detachable die-cutting mechanism, comprising a frame (1) and a die body (2) mounted inside the frame (1), characterized in that: Fixing holes (3) are provided on the side walls of the frame (1) and the blade (2), and fixing buckles (4) are installed at the fixing holes (3). A groove (5) is provided on the side wall of the frame (1) below the fixing holes (3). A guide post (6) is fixedly connected to the frame (1) in the groove (5). An L-shaped buckle (7) is slidably connected to the guide post (6). The L-shaped buckle (7) cooperates with the fixing buckle (4), and two springs (8) are provided at the bottom of the L-shaped buckle (7) that are both connected to the frame (1).
2. The detachable die-cutting mechanism according to claim 1, characterized in that: The blade (2) has a blade at the bottom and a V-shaped bend structure at the positioning point (9).
3. The detachable die-cutting mechanism according to claim 1, characterized in that: The inner side of the frame (1) is provided with a blade groove for mounting the blade body (2), and the blade groove is adapted to the blade body (2).
4. The detachable die-cutting mechanism according to claim 1, characterized in that: The fixing buckle (4) passes through the frame (1) and the blade (2) and has an arc-shaped buckle groove at one end that matches the top of the L-shaped buckle (7).
5. A detachable die-cutting mechanism according to claim 1, characterized in that: Both springs (8) are located in the groove (5) and on both sides of the guide post (6).