Edge cutting die for box structure stamping

By designing a heat dissipation structure and positioning system for the trimming die used in box-type stamping, the problem of heat accumulation in the die was solved, the die temperature was stabilized, the trimming quality was ensured, the die life was extended, and the production cost was reduced.

CN224487327UActive Publication Date: 2026-07-14DONGGUAN KAI FEI NUO IND CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DONGGUAN KAI FEI NUO IND CO LTD
Filing Date
2025-01-17
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

During high-speed stamping, heat accumulation inside the die leads to material deformation, uneven cutting edges, dimensional deviations, and early die fatigue, affecting product quality and lifespan.

Method used

A trimming die for box-shaped stamping is designed, comprising a lower die body with a heat dissipation structure, a circulating water inlet pipe, a circulating pipe, and a circulating water outlet pipe, forming an efficient cooling circulation system. The die is cooled by cooling water, and the installation slot and screw hole facilitate the installation and replacement of the cutting blade. The positioning block and positioning slot improve the positioning accuracy.

Benefits of technology

It effectively reduces mold temperature, avoids thermoplastic deformation of materials, ensures neat cutting edges and accurate dimensions, extends mold life, reduces production costs, and improves product quality and cutting precision.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a kind of edge cutting die for box structure stamping, including lower mould body, fixed support, cutting cylinder, upper mould body and guide rod, fixed support stands in lower mould body top, upper mould body is between fixed support and lower mould body, fixed support top and cutting cylinder are connected, cutting cylinder output end and upper mould body are connected, guide rod is symmetrically distributed between lower mould body and fixed support, upper mould body bottom movably installs cutting blade, lower mould body top is equipped with forming plate, forming plate inside is provided with blade opening groove and cutting blade movable connection, lower mould body inside is equipped with heat dissipation structure, and heat dissipation structure includes circulating inlet pipe, circulating pipeline and circulating outlet pipe, circulating outlet pipe is rectangular distribution in lower mould body inside, can effectively reduce the temperature of mould in high-speed stamping process, to avoid material thermoplastic deformation due to high temperature, ensure that cutting edge is neat, size is accurate, improve the overall quality of product.
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Description

Technical Field

[0001] This utility model relates to the field of cutting mold technology, and more specifically, to a trimming mold for stamping box structures. Background Technology

[0002] In modern industrial production, server casings, as a crucial component of electronic products, require extremely high precision and quality in their manufacturing process. Stamping, as a highly efficient and precise metal processing method, plays a key role in server casing production. Trimming dies, as an important part of stamping, are responsible for precisely cutting metal materials during high-speed stamping to ensure dimensional accuracy and aesthetic appeal.

[0003] During high-speed stamping, the high stamping frequency, friction between the die and the metal material, as well as the impact force on the die itself, cause a significant amount of heat to accumulate. If effective heat dissipation is not implemented, this heat will accumulate inside the die, leading to problems such as material deformation and premature die fatigue. When the die temperature rises, the metal material is prone to thermoplastic deformation at high temperatures, resulting in uneven cutting edges and even dimensional deviations, affecting product quality. Continuous heating causes thermal fatigue in the die material, accelerating die aging and wear, shortening die life, and increasing production costs. Summary of the Invention

[0004] The main purpose of this utility model is to provide a trimming die for stamping box structure to solve the problem of heat accumulation inside the die in the prior art.

[0005] To achieve the above objectives, this utility model provides a trimming die for stamping box-shaped structures, comprising a lower die body, a fixed support, a cutting cylinder, an upper die body, and guide rods. The fixed support is positioned at the top of the lower die body, and the upper die body is located between the fixed support and the lower die body. The top of the fixed support is connected to the cutting cylinder, and the output end of the cutting cylinder is connected to the upper die body. Guide rods are symmetrically distributed between the lower die body and the fixed support. A cutting blade is movably mounted at the bottom of the upper die body, and a forming plate is provided at the top of the lower die body. The forming plate has a cutting edge groove inside that is movably connected to the cutting blade. A heat dissipation structure is provided inside the lower die body. The heat dissipation structure includes a circulating water inlet pipe, a circulating pipe, and a circulating water outlet pipe. The circulating water outlet pipe is rectangularly distributed inside the lower die body, and one end of the circulating water inlet pipe and the circulating pipe is connected in series with the circulating pipe.

[0006] Furthermore, the upper mold body has symmetrically distributed mounting grooves inside, and the mounting grooves and the cutting blade are respectively provided with screw holes, and the cutting blade and the mounting grooves are in sliding fit.

[0007] Furthermore, the number of mounting slots is the same as the number of cutting edge grooves, and the positions of the mounting slots correspond perpendicularly to the positions of the cutting edge grooves.

[0008] Furthermore, positioning blocks are symmetrically distributed at the bottom of the upper mold body.

[0009] Furthermore, positioning grooves are symmetrically distributed inside the lower mold body.

[0010] Furthermore, the positioning block is movably connected to the positioning slot.

[0011] Furthermore, the bottoms of the positioning block and the positioning groove are respectively diamond-shaped.

[0012] Furthermore, the circulating water inlet pipe and the circulating pipe are both in a "T" shape.

[0013] By applying the technical solution of this utility model, through optimized mold design and the addition of heat dissipation structures, including the design of circulating water inlet pipes, circulating pipes, and circulating water outlet pipes, a highly efficient cooling circulation system is formed. This system can quickly absorb and dissipate heat inside the mold, maintaining a stable mold operating temperature. This effectively reduces the mold temperature during high-speed stamping, thus preventing thermoplastic deformation of the material due to high temperatures, ensuring neat cutting edges and accurate dimensions, improving overall product quality, reducing thermal fatigue caused by temperature increases, extending mold lifespan, and lowering production costs. The design of mounting slots and screw holes makes the installation and replacement of the cutting blades simpler and faster, reducing maintenance time and costs. The design of positioning blocks and positioning slots improves the positioning accuracy of the mold, ensuring precise alignment between the upper and lower mold bodies, avoiding cutting deviations caused by inaccurate positioning, and thus guaranteeing the precision of the cut products.

[0014] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0015] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments and descriptions of this utility model are used to explain this utility model and do not constitute an undue limitation thereof. In the drawings:

[0016] Figure 1 A three-dimensional structural schematic diagram of an embodiment of the edge trimming die for stamping box structure according to the present invention is shown;

[0017] Figure 2 It shows Figure 1 A schematic diagram of the cross-sectional structure of the lower die body of the edge trimming die used for stamping the box structure;

[0018] Figure 3 It shows Figure 1 A first-view structural diagram of the upper and lower mold bodies of the edge trimming die used for stamping the box structure;

[0019] Figure 4 It shows Figure 1 A second-view structural diagram of the upper and lower mold bodies of the edge trimming die used for stamping the box structure.

[0020] The above figures include the following reference numerals:

[0021] 1. Lower mold body; 2. Fixed bracket; 3. Cutting cylinder; 4. Upper mold body; 5. Guide rod; 6. Positioning block; 7. Cutting blade; 8. Mounting groove; 9. Forming plate; 10. Circulating water inlet pipe; 11. Circulating pipe; 12. Circulating water outlet pipe; 13. Positioning groove; 14. Cutting edge groove; 15. Screw hole. Detailed Implementation

[0022] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0024] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate for the embodiments of the utility model described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0025] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0026] Figure 1 and Figure 2 This invention illustrates an embodiment of a trimming die for stamping a box-shaped structure. The die includes a lower die body 1, a fixed support 2, a cutting cylinder 3, an upper die body 4, and guide rods 5. The fixed support 2 is positioned at the top of the lower die body 1, and the upper die body 4 is located between the fixed support 2 and the lower die body 1. The top of the fixed support 2 is connected to the cutting cylinder 3, and the output end of the cutting cylinder 3 is connected to the upper die body 4. The guide rods 5 are symmetrically distributed between the lower die body 1 and the fixed support 2. A cutting blade 7 is movably mounted at the bottom of the upper die body 4. A forming plate 9 is provided at the top of the lower die body 1, and a cutting edge groove 14 is provided inside the forming plate 9, which is movably connected to the cutting blade 7. A heat dissipation structure is provided inside the lower die body 1. The heat dissipation structure includes a circulating water inlet pipe 10, a circulating pipe 11, and a circulating water outlet pipe 12. The circulating water outlet pipe 12 is rectangularly distributed inside the lower die body 1, and one end of the circulating water inlet pipe 10 and the circulating pipe 11 is connected in series with the circulating pipe 11.

[0027] Using the technical solution of this utility model, the circulating water inlet pipe 10 is connected to the circulating water pump and the cooling water tank. Cooling water is introduced into the circulating pipe 11 through the circulating water inlet pipe 10 and cooled down the cutting friction part of the mold. Finally, it is discharged from the circulating water outlet pipe 12 and circulated in this way to cool down the mold by water cooling.

[0028] Optionally, in the technical solution of this embodiment, the circulating water inlet pipe 10 and the circulating pipe 11 are respectively in a "T" shape.

[0029] like Figure 3 As shown, in a more preferred embodiment, in the technical solution of this embodiment, the upper mold body 4 has symmetrically distributed mounting grooves 8 inside, and the mounting grooves 8 and the cutting blade 7 are respectively provided with screw holes 15. The cutting blade 7 and the mounting groove 8 are slidably engaged, the cutting blade 7 and the mounting groove 8 are horizontally corresponding, and the cutting blade 7 slides along the inside of the mounting groove 8. At the same time, the cutting blade 7 and the screw holes 15 of the mounting groove 8 are connected by bolts, which can fix the position of the cutting blade 7, making it easy to replace the tool and avoiding the problem that the cutting edge of the tool is not sharp enough and it is difficult to replace.

[0030] More preferably, such as Figure 4As shown, the number of mounting slots 8 is the same as the number of cutting edge grooves 14, and the position of mounting slots 8 corresponds perpendicularly to the position of cutting edge grooves 14. The mounting slots fix the cutting blade, and the position of the mounting slots corresponds accordingly, which facilitates positioning and installation.

[0031] Applying the technical solution of this utility model, firstly, connect the circulating water pump and cooling water tank to ensure the normal operation of the circulating cooling water system. Check the sharpness of the cutting blade and whether its installation is secure. Confirm that the positioning block 6 and the positioning groove 13 are compatible and can achieve automatic position correction. Then, start the circulating water pump to allow cooling water to enter the circulating pipe through the circulating inlet pipe to form a cooling cycle. Observe whether the circulating outlet pipe drains normally to ensure that the cooling system is operating normally. Adjust the upper mold body 4 and the lower mold body 1 to the appropriate position to ensure that the cutting blade 7 is aligned with the cutting edge groove 14. Utilize the cooperation of the positioning block 6 and the positioning groove 13 to achieve precise alignment of the upper mold body 4 and the lower mold body 1. Next, the cutting cylinder 3 is activated, causing the upper mold body 4 to slide along the surface of the guide rod 5 to perform the cutting action. During the cutting process, ensure that the cutting blade 7 is in close contact with the cutting edge groove 14 for precise cutting. Place the server housing to be cut on the forming plate 9, operate the cutting cylinder 3 to lower the upper mold body 4, and the cutting blade 7 cuts with the cutting edge groove 14. After the cutting is completed, the upper mold body 4 rises along the guide rod 5 to remove the cut server housing. Finally, after the cutting is completed, check whether the cutting edges are neat and whether the dimensions are accurate. Regularly check the wear of the cutting blade 7 and replace it if necessary. Regularly check the working status of the circulating cooling system to ensure the cooling effect.

[0032] During use, ensure operator safety to avoid accidental injury. Regularly maintain and inspect all parts of the mold to ensure normal operation. If any abnormality is found in the circulating cooling system, stop use immediately, check and troubleshoot the problem. When replacing cutting blade 7, ensure safety to avoid accidents caused by improper operation. After completing the cutting task, turn off the circulating water pump and cooling water tank, clean the work area to ensure environmental hygiene, and record the usage details for future reference.

[0033] like Figure 1 As shown, in a more preferred embodiment, positioning blocks 6 are symmetrically distributed at the bottom of the upper mold body 4, and positioning grooves 13 are symmetrically distributed inside the lower mold body 1. The positioning grooves and positioning blocks are adapted to each other to improve stamping stability. The positioning blocks 6 and positioning grooves 13 are movably connected, and automatic position correction is achieved by sliding the positioning blocks and positioning grooves. The bottoms of the positioning blocks 6 and positioning grooves 13 are respectively diamond-shaped. The positioning blocks 6 are distributed at the bottom of the upper mold body 4, which can ensure that the lower mold body 1 and the upper mold body 4 are vertically aligned when the upper mold body 4 and the lower mold body 1 are in contact, avoiding deviations in vertical movement that would cause the cutting blade 7 and the cutting groove 14 to shift, thereby ensuring cutting quality.

[0034] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0035] Cooling water is introduced into the circulation pipe 11 from the circulation inlet pipe 10 and discharged from the circulation outlet pipe 12. The circulation inlet pipe 10 and the circulation outlet pipe 12 are connected by a circulation pump, and the circulating cooling water dissipates heat from the entire molding plate 9. The molding plate 9 is made of metal and has good thermal conductivity. The cutting cylinder 3 extends and retracts, and the upper mold body 4 slides along the surface of the guide rod 5. The cutting blade 7 at the bottom of the upper mold body 4 is movably inserted into the cutting groove 14, which can cut the server shell between the lower mold body 1 and the upper mold body 4. The heat generated by friction during the cutting process is absorbed and discharged by the circulating cooling water. The positioning block 6 and the positioning groove 13 increase the accuracy of the cutting action.

[0036] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0037] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0038] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element 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 on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0039] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A trimming die for stamping a box-shaped structure, comprising a lower die body (1), a fixed bracket (2), a cutting cylinder (3), an upper die body (4), and guide rods (5), wherein the fixed bracket (2) is positioned at the top of the lower die body (1), the upper die body (4) is located between the fixed bracket (2) and the lower die body (1), the top of the fixed bracket (2) is connected to the cutting cylinder (3), the output end of the cutting cylinder (3) is connected to the upper die body (4), and the guide rods (5) are symmetrically distributed between the lower die body (1) and the fixed bracket (2), characterized in that, The upper mold body (4) has a cutting blade (7) movably installed at the bottom, and the lower mold body (1) has a forming plate (9) at the top. The forming plate (9) has a cutting edge groove (14) inside which is movably connected to the cutting blade (7). The lower mold body (1) has a heat dissipation structure inside. The heat dissipation structure includes a circulating water inlet pipe (10), a circulating pipe (11), and a circulating water outlet pipe (12). The circulating water outlet pipe (12) is rectangularly distributed inside the lower mold body (1). One end of the circulating water inlet pipe (10) and the circulating pipe (11) are connected in series with the circulating pipe (11).

2. The edge trimming die for stamping box structure according to claim 1, characterized in that, The upper mold body (4) has symmetrically distributed mounting grooves (8) inside, and the mounting grooves (8) and the cutting blade (7) are respectively provided with screw holes (15), and the cutting blade (7) and the mounting grooves (8) are slidably engaged.

3. The edge trimming die for stamping box structure according to claim 2, characterized in that, The number of mounting slots (8) is the same as the number of cutting edge grooves (14), and the position of the mounting slots (8) corresponds perpendicularly to the position of the cutting edge grooves (14).

4. The edge trimming die for stamping box structure according to claim 1, characterized in that, The upper mold body (4) has symmetrically distributed positioning blocks (6) at its bottom.

5. The edge trimming die for stamping box structure according to claim 4, characterized in that, The lower mold body (1) has symmetrically distributed positioning grooves (13) inside.

6. The edge trimming die for stamping box structure according to claim 5, characterized in that, The positioning block (6) is movably connected to the positioning groove (13).

7. The edge trimming die for stamping box structure according to claim 6, characterized in that, The bottom of the positioning block (6) and the positioning groove (13) are respectively diamond-shaped.

8. The edge trimming die for stamping box structure according to claim 1, characterized in that, The circulating water inlet pipe (10) and the circulating pipe (11) are respectively in a "T" shape.