Die structure applied to high-strength stamping

Abstract

The utility model relates to the technical field of stamping dies, and discloses a die structure applied to high-strength stamping, a punch is arranged in a first fixed hanging table insert core, a second fixed hanging table insert core and a stripper plate in a penetrating manner, and the punch is of a cylinder structure consisting of a hanging table end, a connecting end and a punch head end which are connected in sequence; a first fixed through hole matched with the hanging table end is formed in the first fixed hanging table insert core, a second fixed through hole matched with the connecting end is formed in the second fixed hanging table insert core, and when the upper die module and the lower die module are in a closed state, the punch end is exposed out of the lower end of the stripper plate; the stamping die has the advantages of being suitable for high-strength stamping, effectively protecting the punch and relieving the problem that the punch is broken.

Description

Technical Field

[0001] The utility model belongs to the technical field of stamping dies, and particularly relates to a die structure applied to high-strength stamping. Background Art

[0002] In the production process of hardware dies, for products with relatively thick blanking materials and relatively high stamping strength, there are strong tests on the limiting installation method of punches in the die structure and the structural design of the punches themselves.

[0003] Reference Figure 1 , in the traditional die structure, a fixed hanging platform is formed at the upper end of the punch, and an installation through hole matching the outer shape of the punch 300 is formed inside the upper die module 100, so that the punch is embedded and installed in the installation through hole. During the blanking process of high-strength stamping side plates with this die structure, the pulling force of the material on the punch is very large, resulting in frequent breakage of the punch. It is necessary to frequently stop the machine and repair and replace the punch in the lower die, which brings great trouble to production and affects the normal delivery of production. Summary of the Utility Model

[0004] In order to solve the deficiencies of the existing technology, the utility model provides a die structure applied to high-strength stamping, which realizes the purpose of being applicable to high-strength stamping, playing a strong and effective protective role for the punch, and alleviating the problem of punch breakage.

[0005] The technical purpose to be achieved by the utility model is realized through the following technical solutions:

[0006] The utility model provides a die structure applied to high-strength stamping, including an upper die module, a lower die module and a punch. The upper die module is located above the lower die module, and the punch is arranged at the lower end of the upper die module;

[0007] The upper die module includes an upper die base, an upper backing plate, an upper clamping plate, a stop plate and a stripper plate which are connected in sequence from top to bottom. A first fixed hanging platform insert is embedded and installed in the upper clamping plate, and a second fixed hanging platform insert is embedded and installed in the stop plate;

[0008] The punch passes through the first fixed hanging platform insert, the second fixed hanging platform insert and the stripper plate;

[0009] The punch is a columnar structure composed of a hanging platform end, a connecting end and a punch head end connected in sequence. A first fixed through hole matching the hanging platform end is opened in the first fixed hanging platform insert, and a second fixed through hole matching the connecting end is opened in the second fixed hanging platform insert. In the closed state of the upper die module and the lower die module, the punch head end exposes below the stripper plate.

[0010] In some implementations, in the horizontal direction, the width of the hanging platform end is greater than the width of the connecting end, and the width of the connecting end is greater than the width of the punch end, effectively strengthening the overall strength of the punch and facilitating the limit installation of the punch.

[0011] In some implementations, a rounded corner structure is formed at the connection between the hanging platform end and the connecting end, improving the connection strength between the hanging platform end and the connecting end and preventing fracture problems.

[0012] In some implementations, a support portion matching the rounded corner structure is formed on the pore wall of the second fixed through hole, improving the flat support effect on the hanging platform end and thus playing a strong and effective protective role on the punch.

[0013] In some implementations, the axial height of the hanging platform end is greater than 19.5 mm, effectively ensuring the strength of the hanging platform end.

[0014] In some implementations, the axial height of the hanging platform end is less than 1 / 3 of the axial height of the punch. While facilitating the limit installation of the punch and improving the strength of the punch, it ensures the punching effect of the punch.

[0015] In some implementations, an inclined surface structure is formed at the connection between the connecting end and the punch end, improving the connection strength between the connecting end and the punch end and preventing fracture problems.

[0016] In some implementations, it further includes a fixing screw. The threaded end of the fixing screw sequentially passes through the second fixed hanging platform insert and the first fixed hanging platform insert and is locked on the upper backing plate, playing a locking connection role on the first fixed hanging platform insert and the second fixed hanging platform insert.

[0017] In some implementations, a guiding module for die closing alignment is further provided between the upper die module and the lower die module to ensure the alignment accuracy of the upper die module and the lower die module during the closing process.

[0018] In some implementations, the guiding module includes a guiding post and a guiding sleeve;

[0019] The guiding post is embedded in the upper clamping plate, the stop plate and the stripper plate, and the lower end of the guiding post exposes below the lower end of the stripper plate. The guiding sleeve is embedded in the upper end of the lower die module, and the opening of the guiding sleeve faces the guiding post, realizing the alignment accuracy of the upper die module and the lower die module during the closing process.

[0020] In summary, the present utility model has at least the following advantages:

[0021] A mold structure applied to high-strength stamping provided by the present utility model embeds and installs a first fixed hanging platform insert in the upper clamping plate and a second fixed hanging platform insert in the stop plate. By using the first fixed hanging platform insert and the second fixed hanging platform insert to limit and install the punch, it plays a role in preventing the hanging platform end of the punch from being affected by the pulling force of the punching force and providing a flat support for the entire hanging platform end, greatly strengthening the strength of the hanging platform end of the punch, playing a strong and effective protective role for the punch, alleviating the problem of punch fracture, and making the punch applicable to high-strength stamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the punch clamping in the traditional mold structure in the background technology;

[0023] Figure 2 It is a schematic diagram of the mold structure of Embodiment 1 of the present utility model in the open state;

[0024] Figure 3 It is a schematic diagram of the mold structure of Embodiment 1 of the present utility model in the closed state;

[0025] Figure 4 It is a schematic diagram of the structure of the punch of Embodiment 1 of the present utility model;

[0026] Figure 5 It is a schematic diagram of the punch clamping of Embodiment 1 of the present utility model;

[0027] Figure 6 It is a schematic diagram of the structure of the punch of Embodiment 2 of the present utility model;

[0028] Figure 7 It is a schematic diagram of the structure of the punch and the second fixed hanging insert of Embodiment 2 of the present utility model;

[0029] Figure 8 It is a schematic diagram of the mold structure of Embodiment 3 of the present utility model in the open state;

[0030] 100. Upper die module; 110. Upper die base; 120. Upper backing plate; 130. Upper clamping plate; 140. Stop plate; 150. Stripping plate;

[0031] 200. Lower die module;

[0032] 300. Punch; 310. Hanging platform end; 320. Connection end; 330. Punch end; 340. Fillet structure; 350. Inclined plane structure;

[0033] 400. First fixed hanging platform insert;

[0034] 500. Second fixed hanging platform insert; 510. Support part;

[0035] 600. Fixed screw;

[0036] 700, guiding module; 710, guiding column; 720, guiding sleeve. Specific embodiments

[0037] To make the purpose, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. The described embodiments are some, but not all, of the embodiments of the present utility model.

[0038] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the present utility model to be protected, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0039] Example 1:

[0040] Please refer to Figures 2 - 5 , a die structure applied to high-strength stamping, including an upper die module 100, a lower die module 200, and a punch 300. The upper die module 100 is located above the lower die module 200, and the punch 300 is disposed at the lower end of the upper die module 100.

[0041] The lower die module 200 is used to support and limit the product. The upper die module 100 is used to drive the punch 300 to move downward under the action of an external driving force. When the upper die module 100 and the lower die module 200 are in a closed state, the punch 300 completes the stamping of the product. When the upper die module 100 and the lower die module 200 are in an open state, the punch 300 retracts to the initial height with the upper die module 100.

[0042] The upper die module 100 includes an upper die base 110, an upper backing plate 120, an upper clamping plate 130, a stop plate 140, and a stripper plate 150 connected in sequence from top to bottom. A first fixed hanging platform insert 400 is embedded and installed in the upper clamping plate 130, and a second fixed hanging platform insert 500 is embedded and installed in the stop plate 140.

[0043] The upper die base 110 fixes the upper backing plate 120 and the upper clamping plate 130 together and transmits pressure. The upper backing plate 120 is used to cushion the punch 300 to prevent the upper end of the punch 300 from squeezing and damaging the upper die base 110 and increase the die height. The upper clamping plate 130 and the stop plate 140 are used to clamp the punch 300, and the stripper plate 150 is used to guide the punch 300 and perform the functions of stripping and blank holding.

[0044] The punch 300 is inserted through the first fixed hanging platform insert 400, the second fixed hanging platform insert 500, and the stripper plate 150. The first fixed hanging platform insert 400 and the second fixed hanging platform insert 500 play a clamping role on the punch 300. Understandably, the first fixed hanging platform insert 400 and the second fixed hanging platform insert 500 are in a relative relationship.

[0045] Reference Figure 4 and Figure 5 The punch 300 is a columnar structure composed of a hanging platform end 310, a connecting end 320, and a punch end 330 connected in sequence. Understandably, to ensure the stamping strength of the punch 300, the punch 300 is integrally formed. The hanging platform end 310 is used to play a better clamping role, the connecting end 320 plays a role in connecting and transmitting pressure, and the punch end 330 is used to apply the punching pressure on the product. A first fixed through hole matching the hanging platform end 310 is opened in the first fixed hanging platform insert 400, and a second fixed through hole matching the connecting end 320 is opened in the second fixed hanging platform insert 500. In the closed state of the upper die module 100 and the lower die module 200, the punch end 330 exposes below the stripper plate 150.

[0046] As can be seen from the background technology, in the traditional die structure, a fixed insert for clamping the punch 300 is not embedded in the upper die module 100, but a through hole matching the punch 300 is directly opened in the relevant sandwich layer. In this case, when the die is applied to high-strength stamping, the hanging platform end 310 of the punch 300 is prone to breakage. In this embodiment, by embedding and installing the first fixed hanging platform insert 400 in the upper clamping plate 130 and embedding and installing the second fixed hanging platform insert 500 in the stop plate 140, the limiting installation of the punch 300 by the first fixed hanging platform insert 400 and the second fixed hanging platform insert 500 plays a role in preventing the hanging platform end 310 of the punch 300 from being affected by the pulling movement of the punching force and playing a role in flatly supporting the entire hanging platform end 310, greatly strengthening the strength of the hanging platform end 310 of the punch 300.

[0047] In specific application, the product is placed on the lower die module 200, and the lower die module 200 plays a supporting and limiting role on the product. Under the action of an external driving force, the upper die module 100 drives the punch 300 to move downward. When the stripper plate 150 contacts the surface of the product or the lower die module 200, during the continuous downward movement of the upper die module 100, the punching end of the punch 300 exposes below the stripper plate 150 to punch the product; after the punching operation is completed, under the action of an external driving force, the upper die module 100 drives the punch 300 to move upward, so that the punch 300 retracts to the initial height.

[0048] Embodiment 2:

[0049] The difference between this embodiment and Embodiment 1 is that in this embodiment, further structural optimization is made to the die structure of the present utility model. Please refer to Figure 6 and Figure 7 .

[0050] Refer to Figure 6 . In this embodiment, in the horizontal direction, the width of the hanging platform end 310 is greater than the width of the connecting end 320, and the width of the connecting end 320 is greater than the width of the punch end 330. Gradually increasing the widths of the punch end 330, the connecting end 320, and the hanging platform end 310 can effectively enhance the overall strength of the punch 300 and facilitate the limit installation of the punch 300.

[0051] Furthermore, a rounded corner structure 340 is formed at the connection between the hanging platform end 310 and the connecting end 320. The rounded corner structure 340 can improve the connection strength between the hanging platform end 310 and the connecting end 320 and prevent fracture problems.

[0052] For the traditional punch 300, a hanging platform end 310 for easy clamping is formed at its upper end, but the connection between the hanging platform end 310 and the lower part presents a right-angle structure. This structure is prone to fracture when used for high-strength stamping. In this example, a rounded corner structure 340 is formed at the connection between the hanging platform end 310 and the connecting end 320, which can greatly enhance the strength of the hanging platform end 310.

[0053] Refer to Figure 7 . A support portion 510 matching the rounded corner structure 340 is formed on the hole wall of the second fixed through hole. The support portion 510 improves the flat support effect on the hanging platform end 310, and thus plays a strong and effective protective role for the punch 300.

[0054] In some embodiments, the axial height of the hanging platform end 310 is greater than 19.5 mm and less than 1 / 3 of the axial height of the punch 300. This height limitation can effectively ensure the strength of the hanging platform end 310, and while facilitating the limit installation of the punch 300 and enhancing the strength of the punch 300, ensure the punching effect of the punch 300. For example, the axial height of the hanging platform end 310 is 20 mm, and the axial height of the punch 300 is 70 mm.

[0055] It can be understood that the axial height of the first fixed hanging platform insert 400 is the same as the axial height of the hanging platform end 310 to better prevent the hanging platform end 310 from being affected by the pulling force of the punching force. The total axial height of the upper clamping plate 130, the stop plate 140, and the stripper plate 150 is less than the axial height of the punch 300 to ensure that when the upper die module 100 and the lower die module 200 are in the closed state, the punch end 330 protrudes from the lower end of the stripper plate 150 to punch the product.

[0056] In some embodiments, a bevel structure 350 is formed at the connection between the connection end 320 and the punch end 330. The bevel structure 350 can improve the connection strength between the connection end 320 and the punch end 330, preventing fracture problems.

[0057] Example 3:

[0058] The difference between this embodiment and Example 1 is that in this embodiment, further structural optimization is made to the die structure of the present utility model. Please refer to Figure 8 .

[0059] In this embodiment, the die structure further includes a fixing screw 600. The threaded end of the fixing screw 600 sequentially passes through the second fixed hanging platform insert 500 and the first fixed hanging platform insert 400 and is then locked on the upper backing plate 120, playing a role in locking and connecting the first fixed hanging platform insert 400 and the second fixed hanging platform insert 500.

[0060] In some embodiments, a guiding module 700 for die closing alignment is further provided between the upper die module 100 and the lower die module 200. The guiding module 700 can ensure the alignment accuracy of the upper die module 100 and the lower die module 200 during the closing process.

[0061] Furthermore, the guiding module 700 includes a guiding column 710 and a guiding sleeve 720. The guiding column 710 is embedded in the upper clamping plate 130, the stop plate 140, and the stripper plate 150, and the lower end of the guiding column 710 protrudes from the lower end of the stripper plate 150. The guiding sleeve 720 is embedded in the upper end of the lower die module 200, and the opening of the guiding sleeve 720 faces the guiding column 710. When the upper die module 100 moves downward under an external driving force, it drives the guiding column 710 to move downward, enabling the guiding column 710 to pass through the guiding groove, thereby realizing the alignment accuracy of the upper die module 100 and the lower die module 200 during the closing process.

[0062] A die structure provided by the present utility model for high-strength stamping, by embedding and installing a first fixed hanging platform insert in the upper clamping plate and embedding and installing a second fixed hanging platform insert in the stop plate, and using the first fixed hanging platform insert and the second fixed hanging platform insert to limit and install the punch, plays a role in preventing the hanging platform end of the punch from being affected by the pulling force of the punching force and providing a flat support for the entire hanging platform end, greatly strengthening the strength of the hanging platform end of the punch, playing a strong and effective protective role for the punch, alleviating the punch fracture problem, and enabling the punch to be applicable to high-strength stamping.

[0063] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "attachment", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0064] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, terms such as "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0065] In addition, terms such as "horizontal", "vertical", "hanging", etc. do not mean that the components are required to be absolutely horizontal or hanging, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but may be slightly inclined.

[0066] In the present utility model, unless otherwise clearly defined and limited, the first feature being above or below the second feature may include the direct contact of the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being above, over and on the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being below, under and beneath the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the horizontal height of the first feature is lower than that of the second feature.

[0067] Although the description of the present utility model is made in combination with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes based on the above content. Therefore, all such substitutions, improvements and changes are included within the spirit and scope of the appended claims.

Claims

1. A die structure for high-strength stamping, characterized in that: It comprises an upper die module (100), a lower die module (200) and a punch (300), wherein the upper die module (100) is located above the lower die module (200), and the punch (300) is arranged at the lower end of the upper die module (100); The upper die module (100) comprises an upper die base (110), an upper pad (120), an upper clamping plate (130), a stop plate (140) and a stripping plate (150) which are sequentially connected from top to bottom; a first fixed hanging platform insert (400) is embedded in the upper clamping plate (130), and a second fixed hanging platform insert (500) is embedded in the stop plate (140); The punch (300) is inserted into the first fixed hanging platform insert (400), the second fixed hanging platform insert (500) and the stripping plate (150); The punch (300) is composed of a columnar structure consisting of a hanging platform end (310), a connecting end (320) and a punch end (330) connected in sequence; a first fixed through hole matching the hanging platform end (310) is opened in the first fixed hanging platform insert (400); a second fixed through hole matching the connecting end (320) is opened in the second fixed hanging platform insert (500); when the upper mold module (100) and the lower mold module (200) are in a closed state, the punch end (330) is exposed at the lower end of the stripping plate (150).

2. The die structure for high-strength stamping according to claim 1, characterized in that: In the horizontal direction, the width of the hanging platform end (310) is greater than the width of the connecting end (320), and the width of the connecting end (320) is greater than the width of the punch end (330).

3. The die structure for high-strength stamping according to claim 2, characterized in that: A rounded corner structure (340) is formed at the connection between the hanging platform end (310) and the connecting end (320).

4. The die structure for high-strength stamping according to claim 3, characterized in that: A support portion (510) matching the rounded corner structure (340) is formed on the hole wall of the second fixing through hole.

5. The die structure for high-strength stamping according to claim 2, characterized in that: The axial height of the hanging platform end (310) is greater than 19.5 mm.

6. The die structure for high-strength stamping according to claim 5, characterized in that: The axial height of the hanging platform end (310) is less than 1 / 3 of the axial height of the punch (300).

7. The die structure for high-strength stamping according to claim 2, characterized in that: A slope structure (350) is formed at the connection between the connection end (320) and the punch end (330).

8. The die structure for high-strength stamping according to any one of claims 1 to 7, characterized in that: It also includes a fixing screw (600), the threaded end of which passes through the second fixing hanging platform insert (500) and the first fixing hanging platform insert (400) in sequence and is then locked on the upper pad (120).

9. The die structure for high-strength stamping according to any one of claims 1 to 7, characterized in that: A guide module (700) for closing and aligning the mold is also provided between the upper mold module (100) and the lower mold module (200).

10. The die structure for high-strength stamping according to claim 9, characterized in that: The guide module (700) comprises a guide column (710) and a guide sleeve (720); The guide column (710) is embedded in the upper clamping plate (130), the stop plate (140) and the stripping plate (150), and the lower end of the guide column (710) is exposed at the lower end of the stripping plate (150), and the guide sleeve (720) is embedded in the upper end of the lower mold module (200), and the opening of the guide sleeve (720) faces the guide column (710).

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