Outer fillet punching die

By designing an outer rounded corner punching die and using structures such as rotating support rods and electric push rods to adjust the angle of the fitting plate, the problems of gaps and shaking when the electric rounded corner cutting machine processes workpieces at different angles are solved, achieving stable cutting and aesthetic results.

CN224239849UActive Publication Date: 2026-05-15HANGZHOU JIEDA LASER DIE & MOULD CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HANGZHOU JIEDA LASER DIE & MOULD CO LTD
Filing Date
2025-06-11
Publication Date
2026-05-15

AI Technical Summary

Technical Problem

The fixed installation of the limit block in the existing electric corner rounding machine causes gaps and wobbling when processing workpieces at different angles, affecting the appearance of the workpieces.

Method used

An external rounded corner punching die was designed, comprising a rounded corner cutting device, a rotating support rod, an angle fitting plate, an electric push rod, and a gear and rack structure, which can adjust the angle of the angle fitting plate to ensure stable positioning of the workpiece during the cutting process.

Benefits of technology

It achieves stable cutting according to different workpiece angles, avoiding gaps and wobbling, and improving the aesthetics and processing accuracy of the workpiece.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224239849U_ABST
    Figure CN224239849U_ABST
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Abstract

The utility model provides an outer round corner punching die which comprises a round corner cutting device, the front end of the round corner cutting device is fixedly connected with a workpiece placing table, the upper end of the workpiece placing table is rotatably connected with two rotating supporting rods, and the upper ends of the two rotating supporting rods are both fixedly connected with angle attaching plates. A sliding through groove is formed in the front end of the round corner cutting device, and the problems that a limiting block of an electric round corner cutting machine in an original device is fixedly installed on a round corner machine table, when a workpiece with a large angle or a small angle is machined, a gap can be formed in the attaching face of the workpiece, and the round corner cutting device is prone to shaking in the round corner cutting process are solved through the design. The circular bead cutting device is reasonable in structure, good in practicability and capable of adjusting the angles of the two angle attaching plates according to the workpieces at different angles, so that the circular bead cutting device is effectively matched with different workpieces, and the circular bead cutting device can be used for machining the different workpieces.
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Description

Technical Field

[0001] This utility model is an external rounded corner punching die, belonging to the field of rounded corner machine technology. Background Technology

[0002] An electric corner rounding machine is a type of equipment widely used for rounding corners of flexible packaging bags (including three-side seal bags and stand-up pouches), trademarks and tags, business cards, books, packaging decorations, documents, certificates, bags, card folds, notebooks, etc.

[0003] However, the limiting block of the existing electric corner rounding machine is fixedly installed on the corner rounding machine table. When processing workpieces with large or small angles, gaps will appear on their mating surfaces. The corner rounding cutting device is prone to shaking during the corner rounding cutting process, which will damage the appearance of the workpiece. There is an urgent need for an external corner rounding punching die to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide an external rounded corner punching die to solve the problems mentioned in the background art. This utility model has good practicality and can adjust the angle of the two angle fitting plates according to workpieces with different angles, so that the rounded corner cutting device can effectively adapt to different workpieces and can be used to process different workpieces.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: an outer rounded corner punching die, including a rounded corner cutting device, a workpiece placement table is fixedly connected to the front end of the rounded corner cutting device, two rotating support rods are rotatably connected to the upper end of the workpiece placement table, and an angle fitting plate is fixedly connected to the upper end of each of the two rotating support rods.

[0006] The front end of the rounded corner cutting device is provided with a sliding groove. The lower end of the workpiece placement table is fixedly connected to a second electric push rod. The telescopic end of the second electric push rod is fixedly connected to a moving rack. The lower end of the workpiece placement table is rotatably connected to two rotating gears via a rotating shaft. The lower end of the moving rack is fixedly connected to a rectangular slider. The lower end of the workpiece placement table is fixedly connected to a protective shell. A fixed sliding rod is fixedly connected inside the protective shell. The rectangular slider is slidably connected to the circumferential surface of the fixed sliding rod.

[0007] Furthermore, a fixing block is fixedly connected to the front end of the rounded corner cutting device, a first electric push rod is fixedly connected to the upper end of the fixing block, a pushing block is fixedly connected to the telescopic end of the first electric push rod, and a friction layer is provided at the lower end of the pushing block.

[0008] Furthermore, the upper end of the workpiece placement platform is provided with two arc-shaped sliding grooves, and the lower ends of the two angle fitting plates are fixedly connected with sliding through grooves, and the two sliding through grooves are slidably connected in the two arc-shaped sliding grooves respectively.

[0009] Furthermore, the surface of the protective shell is provided with a waterproof layer.

[0010] Furthermore, a protective pad is provided at the upper end of the workpiece placement platform.

[0011] Furthermore, the movable rack is slidably connected in the sliding groove, and the movable rack meshes with two rotating gears.

[0012] The beneficial effects of this utility model are as follows: This utility model provides an outer rounded corner punching die. Because this utility model adds a rotating gear, a second electric push rod, a moving rack, a rectangular slider, and a fixed sliding rod, our design improvements and actual use have shown that this device has a reasonable structure and good practicality. It can adjust the angle of the two angle fitting plates according to the workpiece with different angles, so that the rounded corner cutting device can effectively adapt to different workpieces and can be used to process different workpieces. Attached Figure Description

[0013] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0014] Figure 1 This is a three-dimensional schematic diagram of the overall structure of a rounded corner punching die according to the present invention;

[0015] Figure 2 This is a partial cross-sectional view of the external fillet punching die of this utility model from a first perspective.

[0016] Figure 3 This is a partial cross-sectional view of the external fillet punching die of this utility model from a second perspective.

[0017] Figure 4 This is a schematic diagram of the angle bonding plate in an external rounded corner punching die of this utility model.

[0018] In the figure: 1-rounded corner cutting device, 2-fixed block, 3-first electric push rod, 4-pressing block, 5-angle fitting plate, 6-workpiece placement table, 7-arc-shaped slide groove, 8-second electric push rod, 9-protective shell, 10-rotating gear, 11-moving rack, 12-rectangular slider, 13-sliding through groove, 14-rotating support rod, 15-fixed sliding rod. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] Please see Figures 1-4 This utility model provides a technical solution: an outer corner punching die, including a corner cutting device 1. A workpiece placement table 6 is fixedly connected to the front end of the corner cutting device 1. Two rotating support rods 14 are rotatably connected to the upper end of the workpiece placement table 6. Angle fitting plates 5 are fixedly connected to the upper ends of both rotating support rods 14. A sliding groove 13 is provided at the front end of the corner cutting device 1. A second electric push rod 8 is fixedly connected to the lower end of the workpiece placement table 6. A movable rack 11 is fixedly connected to the telescopic end of the second electric push rod 8. Two rotating supports 5 are rotatably connected to the lower end of the workpiece placement table 6 via a rotating shaft. Rotating gear 10 moves the lower end of rack 11, which is fixedly connected to a rectangular slider 12. The lower end of workpiece placement table 6 is fixedly connected to a protective shell 9. A fixed sliding rod 15 is fixedly connected inside the protective shell 9. The rectangular slider 12 is slidably connected to the circumferential surface of the fixed sliding rod 15. This design solves the problem that in the original device, the limit block of the electric corner rounding machine is fixedly installed on the corner rounding machine table. When processing workpieces with large or small angles, gaps will appear on their mating surfaces. The corner rounding cutting device 1 is prone to shaking during the corner rounding cutting process, which in turn damages the appearance of the workpiece.

[0021] As the first embodiment of this utility model: a fixing block 2 is fixedly connected to the front end of the rounded corner cutting device 1, a first electric push rod 3 is fixedly connected to the upper end of the fixing block 2, a pushing block 4 is fixedly connected to the telescopic end of the first electric push rod 3, and a friction layer is provided at the lower end of the pushing block 4. The fixing block 2 installed at the front end of the rounded corner cutting device 1 can support the first electric push rod 3, and the pushing block 4 at the telescopic end of the first electric push rod 3 presses down on the workpiece, increasing the firmness between the workpiece and the workpiece placement table 6. The rounded corner cutting device 1 can avoid shaking when chamfering the workpiece. Two arc-shaped sliding grooves 7 are opened at the upper end of the workpiece placement table 6. The lower ends of the two angle fitting plates 5 are fixedly connected to sliding grooves 13. The two sliding grooves 13 are slidably connected in the two arc-shaped sliding grooves 7. The sliding grooves 13 installed at the lower end of the angle fitting plates 5 can support the angle fitting plates 5 to swing stably on the workpiece placement table 6 by swinging in the arc-shaped sliding grooves 7, thereby assisting the workpiece to be limited to the workpiece placement table 6. The protective housing 9 has a waterproof layer on its surface, which protects the rotating gear 10 and the moving rack 11, preventing external water from corroding them and reducing the amount of external dust entering the meshing area between them. A protective pad is provided at the top of the workpiece placement platform 6 to protect the bottom of the workpiece and prevent collisions between it and the platform, thus protecting the workpiece. The moving rack 11 is slidably connected within the sliding groove 13, meshing with the two rotating gears 10. When the second electric push rod 8 moves the moving rack 11 back and forth, it rotates the rotating gears 10, simultaneously causing the angle contact plates 5 to swing and unfold, allowing them to limit and engage the workpiece.

[0022] As a second embodiment of this utility model: depending on the workpiece structure at different angles, the second electric push rod 8 can drive the moving rack 11 to move forward or backward. At the same time, the rotating gear 10, under the power of the second electric push rod 8, drives the angle fitting plate 5 to unfold outward or inward. After the edges and corners of the workpiece are fitted together with the two angle fitting plates 5, the corners of the workpiece will extend into the rounded corner cutting device 1. The first electric push rod 3 is controlled to push the pressing block 4 to press the upper end of the workpiece, so that it is fixed on the workpiece placement table 6. Then the edges and corners of the workpiece are cut into rounded corners. After the first electric push rod 3 is reset, the user can take out the workpiece.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0024] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A rounded corner punching die, comprising a rounded corner cutting device (1), characterized in that: The front end of the rounded corner cutting device (1) is fixedly connected to a workpiece placement platform (6), and the upper end of the workpiece placement platform (6) is rotatably connected to two rotating support rods (14), and the upper ends of the two rotating support rods (14) are fixedly connected to angle fitting plates (5). The front end of the rounded corner cutting device (1) is provided with a sliding through groove (13). The lower end of the workpiece placement platform (6) is fixedly connected to a second electric push rod (8). The telescopic end of the second electric push rod (8) is fixedly connected to a moving rack (11). The lower end of the workpiece placement platform (6) is rotatably connected to two rotating gears (10) through a rotating shaft. The lower end of the moving rack (11) is fixedly connected to a rectangular slider (12). The lower end of the workpiece placement platform (6) is fixedly connected to a protective shell (9). The protective shell (9) is fixedly connected to a fixed sliding rod (15). The rectangular slider (12) is slidably connected to the circumferential surface of the fixed sliding rod (15).

2. The outer corner punching die according to claim 1, characterized in that: The front end of the rounded corner cutting device (1) is fixedly connected to a fixing block (2), the upper end of the fixing block (2) is fixedly connected to a first electric push rod (3), the telescopic end of the first electric push rod (3) is fixedly connected to a pressing block (4), and the lower end of the pressing block (4) is provided with a friction layer.

3. The outer corner punching die according to claim 1, characterized in that: The upper end of the workpiece placement platform (6) has two arc-shaped sliding grooves (7), and the lower ends of the two angle fitting plates (5) are fixedly connected to sliding through grooves (13). The two sliding through grooves (13) are respectively slidably connected in the two arc-shaped sliding grooves (7).

4. The outer corner punching die according to claim 1, characterized in that: The surface of the protective shell (9) is provided with a waterproof layer.

5. The outer corner punching die according to claim 1, characterized in that: A protective pad is provided at the upper end of the workpiece placement platform (6).

6. The outer corner punching die according to claim 1, characterized in that: The movable rack (11) is slidably connected in the sliding groove (13), and the movable rack (11) meshes with two rotating gears (10).