Module for stamping die, lower die assembly and stamping die

Abstract

The utility model discloses a module for a stamping die, a lower die assembly and the stamping die. The module comprises a pressing part and a bearing part. The material pressing part is arranged between an upper die and a lower die of the stamping die, and a material pressing molded surface of a to-be-stamped part matched with the upper die to press a to-be-stamped material is formed at the top of the material pressing part. The density of the material of the bearing part is smaller than that of the material of the material pressing part, the upper die is staggered and connected to the material pressing part, and a bearing surface for bearing the extension part of the material to be stamped is formed at the top of the bearing part. The module disclosed by the utility model is light in weight and is difficult to damage when being used for pressing a to-be-stamped material.

Description

Technical Field

[0001] This disclosure relates to the field of stamping die technology, and more particularly to modules, lower die assemblies and stamping dies for use in stamping dies. Background Technology

[0002] The automotive market experiences rapid model updates, requiring companies to continuously develop new products and innovate, prototyping new automotive parts. In related technologies, these new automotive parts are often stamped using stamping dies. However, the modules of these stamping dies are typically made of high-density metal materials, resulting in a large module mass. This mass negatively impacts manufacturing efficiency and the efficiency of die opening and closing. Summary of the Invention

[0003] In view of the above-described disadvantages of the prior art, the purpose of this disclosure is to provide a module, a lower die assembly, and a stamping die for a stamping die, wherein the module is lightweight and is difficult to damage when used to press the material to be stamped.

[0004] The module for stamping dies provided in this disclosure includes: a blanking part disposed between the upper and lower dies of the stamping die, and having a blanking profile formed on its top that cooperates with the upper die to press the blanking part of the material to be stamped; and a bearing part having a material density lower than that of the blanking part, being connected to the blanking part offset from the upper die, and having a bearing surface formed on its top for bearing the extension of the blanking part of the material to be stamped.

[0005] According to some embodiments provided in this disclosure, the bearing part is made of plastic and the pressing part is made of metal.

[0006] According to some embodiments provided in this disclosure, the bearing portion is fixedly connected to the pressing portion.

[0007] This disclosure also provides a lower mold assembly, including: the module as described above; and a lower mold disposed below the module.

[0008] According to some embodiments provided in this disclosure, the module is movably disposed above the lower mold;

[0009] Furthermore, during mold closing, the module detaches from the lower mold, and the pressing part cooperates with the upper mold to press the part to be stamped; during mold opening, the module is supported by the lower mold and detaches from the material to be stamped.

[0010] According to some embodiments provided in this disclosure, it further includes: a side die, movably disposed on one side of the lower die near / away from the lower die, for pressing the material to be stamped against the lower die.

[0011] According to some embodiments provided in this disclosure, one of the lower mold and the side mold is provided with a laterally extending lateral portion, and the other is provided with a laterally mating portion that slides with the lateral portion; and / or

[0012] One of the modules and the lower mold has a first vertically extending portion, and the other has a first mating portion that slides with the first vertical portion.

[0013] This disclosure also provides a stamping die, including a lower die assembly as described above; and an upper die disposed above the lower die assembly, capable of cooperating with the lower die assembly.

[0014] According to some embodiments provided in this disclosure, the upper surface of the upper mold is inclined;

[0015] The stamping die further includes a side die, which is movably disposed on one side of the lower die, close to / away from the lower die. The side die is provided with an elastic element for abutting against the upper die when engaged with the lower die, so as to provide a lateral pressing force to the upper die surface to press the material to be stamped.

[0016] According to some embodiments provided in this disclosure, one of the lower mold and the upper mold is provided with a second vertically extending portion, and the other is provided with a second mating portion that slides with the second vertical portion.

[0017] Beneficial effects

[0018] (1) The module, lower die assembly and stamping die disclosed herein are lightweight and are difficult to damage when used to press the material to be stamped.

[0019] (2) The module, lower die assembly and stamping die of this disclosure for stamping die, the elastic element can provide lateral clamping force to the upper die, so as to ensure that the upper surface of the upper die can clamp the material to be stamped in the lateral direction. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a stamping die according to an embodiment of the present disclosure.

[0021] Figure 2 This is a schematic diagram of the module structure according to an embodiment of the present disclosure.

[0022] Figure 3 This is an exploded view of a stamping die according to an embodiment of the present disclosure.

[0023] Figure label:

[0024] 100. Module;

[0025] 11. Pressing section; 1101. Pressing profile; 1102. First mating section;

[0026] 12. Supporting part; 1201. Supporting surface; 700. Upper mold; 701. Upper profile surface; 71. Second vertical part;

[0027] 800, lower mold; 801, lower profile; 802, second mating part; 81, first vertical part; 82, stop part; 83, lateral mating part; 900, side mold; 91, elastic element; 901, side profile; 902, lateral part. Detailed Implementation

[0028] The following specific examples illustrate the implementation of this disclosure. Those skilled in the art can easily understand other advantages and effects of this disclosure from the information disclosed herein. This disclosure can also be implemented or applied through other different specific embodiments, and various details in this disclosure can be modified or changed according to different viewpoints and application modules without departing from the spirit of this disclosure. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this disclosure can be combined with each other.

[0029] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings, so that those skilled in the art to which this disclosure pertains can readily implement it. This disclosure may be embodied in many different forms and is not limited to the embodiments described herein.

[0030] In this disclosure, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic represented in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. Furthermore, the specific features, structures, materials, or characteristics represented may be combined in any suitable manner in any one or a group of embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples represented in this disclosure, as well as the features of those different embodiments or examples.

[0031] Furthermore, the terms "first" and "second" are used for illustrative purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the representation of this disclosure, "a set" means two or more, unless otherwise explicitly specified.

[0032] For the purpose of clarity, devices unrelated to the description are omitted, and the same or similar components throughout the specification are given the same reference numerals.

[0033] Throughout this specification, when it is said that a device is "connected" to another device, this includes not only "direct connection" but also "indirect connection" by placing other components in between. Furthermore, when it is said that a device "comprises" a certain constituent element, unless otherwise stated otherwise, this does not exclude other constituent elements, but rather implies that other constituent elements may be included.

[0034] While the terms first, second, etc., are used in some examples herein to refer to various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, first interface and second interface, etc., are used. Furthermore, as used herein, the singular forms “a,” “an,” and “the” are intended to also include the plural forms unless the context indicates otherwise. It should be further understood that the terms “comprising,” “including,” indicate the presence of the stated feature, step, operation, element, module, item, kind, and / or group, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, modules, items, kinds, and / or groups. The terms “or” and “and / or” as used herein are interpreted as inclusive, or mean any one or any combination thereof. Thus, “A, B, or C” or “A, B, and / or C” means “any one of: A; B; C; A and B; A and C; B and C; A, B, and C.” Exceptions to this definition will only occur if the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0035] The technical terms used herein are for reference only to specific embodiments and are not intended to limit the scope of this disclosure. The singular form used herein includes the plural form unless the statement explicitly indicates otherwise. The word "comprising" as used in this specification means to specify a particular characteristic, region, integer, step, operation, element, and / or component, and does not exclude the presence or addition of other characteristics, regions, integers, steps, operations, elements, and / or components.

[0036] Although not explicitly defined, all terms, including technical and scientific terms used herein, shall have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. Terms defined in commonly used dictionaries shall be further interpreted as having a meaning consistent with the relevant technical literature and the message of the present disclosure, and shall not be over-interpreted as having an ideal or overly formulaic meaning unless otherwise defined.

[0037] In related technologies, stamping die modules are made of high-density metal materials, resulting in a large module mass, inconvenient module movement, and hindering efficient die development. However, if the modules are made of low-density materials, the low-density materials often have poor pressure resistance. Therefore, modules made of low-density materials are easily damaged when used to press materials, affecting the service life of the stamping die.

[0038] In view of this, the present disclosure provides a module for a stamping die, which is lightweight and difficult to damage when used to press the material to be stamped.

[0039] The stamping die of this disclosure is used to stamp a material to be stamped. The material to be stamped includes a part to be stamped and an extension part. The extension part extends from the part to be stamped in a direction away from the part to be stamped. Specifically, the extension part may extend obliquely upward from the part to be stamped.

[0040] Figure 1 This is a schematic diagram of the structure of a stamping die according to an embodiment of this disclosure. (See attached diagram.) Figure 1 The stamping die of this embodiment includes an upper die 700 and a lower die 800. The module 100 is disposed between the lower die 800 and the upper die 700 and is used to cooperate with the upper die 700 to press the material to be stamped.

[0041] Figure 2 This is a schematic diagram of the module structure according to an embodiment of the present disclosure. Figure 3 This is an exploded view of a stamping die according to an embodiment of this disclosure. (See also...) Figure 2 and Figure 3 The module 100 for stamping dies disclosed herein includes a blank holder 11 and a support portion 12. The blank holder 11 is disposed between the upper die 700 and the lower die 800, and its top has a blank holder profile 1101 for engaging with the upper profile surface 701 of the upper die 700 to press the material to be stamped. The density of the material of the support portion 12 is less than that of the material of the blank holder 11. Therefore, due to the lower density of the support portion 12, its mass is smaller, which helps to reduce the overall mass of the module 100. Simultaneously, due to the higher density of the blank holder 11, its internal structure is dense and has good pressure resistance. Therefore, when the blank holder profile 1101 of the blank holder 11 engages with the upper profile surface 701 of the upper die 700 to press the material to be stamped, the blank holder 11 is less likely to be damaged.

[0042] Optionally, the supporting part 12 is made of plastic, and the pressing part 11 is made of metal. Plastic has a lower density than metal, which is beneficial for the lightweighting of the module 100 and reducing its weight. Metal has good pressure resistance, which is beneficial for pressing and fitting with the upper surface 701 of the upper die 700, ensuring that the material to be stamped can be stamped smoothly.

[0043] Specifically, the plastic includes wood substitutes, and the metal includes cast iron. The wood substitutes have advantages such as low cost and ease of processing, which helps reduce the processing difficulty of the module 100, improve work efficiency, shorten the production cycle of the module 100, and improve the development efficiency and reduce development costs of the module 100.

[0044] The supporting part 12 is connected to the pressing part 11 in a way that is offset from the upper die 700. The top of the supporting part 12 is formed with a supporting surface 1201 for supporting the extension of the material to be stamped.

[0045] Optionally, the supporting part 12 is fixedly connected to the pressing part 11. Specifically, the fixed connection method includes bonding or other mechanical connection methods, and the module 100 formed by the fixed connection has good overall stability and high firmness.

[0046] Optionally, the lower surface of the extension of the material to be stamped is provided with a recess, and the bearing part 12 is fitted into the recess, so that the bearing part 12 can also play a positioning role for the material to be stamped and restrict the horizontal movement of the material to be stamped, for example, restricting the movement of the material to be stamped in the horizontal plane along the front-back and left-right directions.

[0047] In the operation of the stamping die of this embodiment, before stamping, the bearing surface 1201 and the blank holder surface 1101 jointly support the material to be stamped, with the bearing portion 12 supported below the extension of the material to be stamped and the blank holder 11 supported below the blank holder portion of the material to be stamped. When the die is closed to stamp the material to be stamped, the upper die 700 cooperates with the blank holder 11 to press the blank holder portion of the material to be stamped, and the extension of the material to be stamped is offset from the upper die 700. During the pressing process, due to the high density and compact internal structure of the blank holder 11, it has good pressure resistance, making it difficult for the blank holder 11 to be damaged during the pressing process. Since the bearing portion 12 is offset from the upper die 700, it only bears the weight of the extension of the material to be stamped, resulting in less pressure on the bearing portion 12, making it also difficult for it to be damaged during the stamping process.

[0048] Therefore, the module 100 for stamping dies described in this embodiment of the present disclosure is lightweight, easy to move, and unlikely to be damaged when stamping the material to be stamped.

[0049] See Figure 2 and Figure 3 This disclosure also provides a lower die assembly for a stamping die, the lower die assembly including the module 100 and the lower die 800 as described above. The lower die 800 is disposed below the module 100 to support the module 100. Because the module 100 is lightweight and difficult to damage during stamping, the overall lower die assembly is also lightweight and difficult to damage during stamping.

[0050] Optionally, the module 100 is movably disposed above the lower mold 800. In the mold-closed position, the module 100 is disposed above the lower mold 800, detached from it, and the pressing surface 1101 cooperates with the upper surface 701 of the upper mold 700 to press the material to be stamped. In the mold-open position, the module 100 is supported by the lower mold 800, and the pressing surface 1101 is detached from the material to be stamped.

[0051] In other words, before the lower die assembly and the upper die 700 are closed, the upper die 700 is positioned above the lower die 800 at a predetermined position. At this time, the module 100 moves upward until it presses the material to be stamped against the upper surface 701 of the upper die 700. Thus, the upper surface 701 and the pressure surface 1101 can cooperate to press the stamping portion of the material to be stamped. After the stamping of the stamping portion is completed, the module 100 moves downward until it rests back on the lower die 800. Thus, the module 100 detaches from the stamped material, which helps to ensure the smooth demolding of the material to be stamped.

[0052] Optionally, the module 100 is connected to a lifting drive, such as a cylinder, to move up and down under the drive of the lifting drive.

[0053] Optionally, one of the module 100 and the lower mold 800 is provided with a vertically extending first vertical portion 81, and the other is provided with a first mating portion 1102 that slides with the first vertical portion 81. Thus, when the module 100 moves up and down relative to the lower mold 800, the interaction between the first vertical portion 81 and the first mating portion 1102 guides the module 100 to always move in the vertical direction, preventing the module 100 from shifting.

[0054] Specifically, one of the first vertical portion 81 and the first mating portion 1102 is formed as a first guide post, and the other is formed as a first guide hole that mates with the first guide post. For example, the module 100 is provided with a first guide hole, and the lower mold 800 is provided with a first guide post that extends vertically and can mate with the first guide hole. Alternatively, the module 100 may be provided with the first guide post, and the lower mold 800 may have a first guide hole that mates with the first guide post.

[0055] See Figure 2 and Figure 3 This disclosure also provides a stamping die, which includes a lower die assembly and an upper die 700 as described above. The upper die 700 is disposed above the blank holder 11 opposite to the blank holder 11, and is used to cooperate with the blank holder 11 to press the blanking portion of the material to be stamped. Since the module 100 is lightweight and difficult to damage during stamping, the overall weight of the stamping die is also relatively light, and it is also difficult to damage during stamping.

[0056] Optionally, one of the lower die 800 and the upper die 700 is provided with a vertically extending second vertical portion 71, and the other is provided with a second mating portion 802 that slides with the second vertical portion 71. The second mating portion 802 is provided with a stop portion 82 that can engage with the stop of the second vertical portion 71. Thus, when the upper die 700 moves up and down relative to the lower die 800, the interaction between the second vertical portion 71 and the second mating portion 802 guides the upper die 700 to always move in the vertical direction, preventing the upper die 700 from shifting. Furthermore, when the upper die 700 moves to a predetermined position above the lower die 800, the stop portion 82 stops the second vertical portion 71, thereby keeping the upper die 700 at the predetermined position above the lower die 800, thus facilitating the subsequent upward movement of the module 100 to cooperate with the upper die 700 in pressing the material to be stamped.

[0057] Specifically, one of the second vertical portion 71 and the second mating portion 802 is formed as a second guide post, and the other is formed as a guide groove or a second guide hole that mates with the second guide post. For example, the lower mold 800 is provided with the guide groove or the second guide hole, and the upper mold 700 can mate with the second guide post in the second guide hole or guide groove. Of course, it is also possible that the upper mold 700 is provided with the second guide hole or the guide groove, and the lower mold 800 is provided with the second guide post.

[0058] See Figure 2 and Figure 3The lower die assembly further includes a side die 900. The side die 900 is movably disposed on one side of the lower die 800, close to / away from the lower die 800, and has a side profile 901 for side pressing in conjunction with the lower profile 801 of the lower die 800, thereby side pressing and shaping the material to be stamped located between the lower profile 801 and the side profile 901.

[0059] Therefore, before stamping the material to be stamped, the module 100 rests on the lower die 800. At this time, the material to be stamped rests above the module 100 and the lower die 800. During die closing, the upper die 700 first moves downwards towards the lower die 800 until it reaches a predetermined position above the lower die 800, after which the upper die 700 stops moving. Then, the side die 900 moves towards the lower die 800, thereby pressing the material to be stamped against the lower die 800. Then, the module 100 moves upwards until the part of the material to be stamped is pressed against the upper surface 701 of the upper die 700, thereby completing the stamping of the material. When the mold is opened, the upper mold 700 first moves upward away from the lower mold 800, then the side mold 900 moves away from the lower mold 800, and then the module 100 moves downward and rests on the lower mold 800 again, thereby completing the mold opening of the stamped material.

[0060] Optionally, one of the side mold 900 and the lower mold 800 has a laterally extending lateral portion 902, and the other has a lateral engaging portion 83 that slides with the lateral portion 902. Thus, when the side mold 900 moves closer to / away from the lower mold 800, the interaction between the lateral portion 902 and the lateral engaging portion 83 guides the side mold 900 to move laterally toward / away from the lower mold 800, preventing the side mold 900 from shifting.

[0061] Specifically, one of the transverse portion 902 and the transverse mating portion 83 is formed as a transverse hole, and the other is formed as a crossbeam for sliding fit inside the transverse hole. For example, the side mold 900 has a transverse hole, and the lower mold 800 has a crossbeam that can fit into the transverse hole. Of course, it is also possible that the side mold 900 has a crossbeam, and the lower mold 800 has a transverse hole that can surround the outside of the crossbeam.

[0062] Optionally, the upper mold 700 has an inclined upper surface 701, and the side mold 900 is provided with an elastic element 91. The elastic element 91 is provided to abut against the upper mold 700 when the side mold 900 is engaged with the lower mold 800, so as to provide a lateral pressing force to the upper surface 701 of the upper mold 700 to press the material to be stamped. Specifically, the elastic element 91 can be a nitrogen spring, which has a long service life and good elasticity.

[0063] Therefore, when the side die 900 moves closer to the lower die 800 and presses the material to be stamped, the elastic member 91 abuts against the side wall of the upper die 700 and is compressed between the upper die 700 and the side die 900. Thus, the elastic member 91 can provide lateral elastic force to the upper die 700, so that the inclined upper mold surface 701 can press the material to be stamped against the inclined pressing mold surface 1101 in the lateral direction, ensuring the pressing effect of the material to be stamped.

[0064] The above embodiments are merely illustrative of the principles and effects of this disclosure and are not intended to limit this disclosure. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this disclosure. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this disclosure should still be covered by the protection scope of this disclosure.

Claims

1. A module for a stamping die, characterized in that, The punch includes: a material pressing portion provided between the upper die and the lower die of the stamping die, and having a material pressing surface on a top thereof for pressing a material to be punched of a material to be punched portion of the upper die; and a material bearing portion having a material density less than that of the material pressing portion, and connected to the material pressing portion at a position offset from the upper die, and having a material bearing surface on a top thereof for bearing an extension portion of the material to be punched.

2. The module for a press die according to claim 1, characterized in that, The material bearing portion is made of plastic, and the material pressing portion is made of metal.

3. The module for a press die according to claim 1, characterized by, The material bearing portion is fixedly connected to the material pressing portion.

4. A lower die assembly for a punch die, characterized by, The punch includes: the module according to any one of claims 1 to 3; a lower die provided below the module.

5. The lower die assembly of claim 4, wherein, The module is movably provided above the lower die; and when the dies are closed, the module is separated from the lower die, and the material pressing portion is pressed against the material to be punched by the upper die; and when the dies are opened, the module is borne by the lower die, and separated from the material to be punched.

6. The lower die assembly of claim 4, wherein, The punch further includes: a side die movably provided on a lateral side of the lower die, and configured to press the material to be punched against the lower die.

7. The lower die assembly of claim 6, wherein, One of the lower die and the side die is provided with a lateral portion extending in a lateral direction, and the other is provided with a lateral matching portion slidingly matched with the lateral portion; and / or One of the module and the lower die is provided with a first vertical portion extending in a vertical direction, and the other is provided with a first matching portion slidingly matched with the first vertical portion.

8. A stamping die characterized by, The punch includes: the lower die assembly according to claim 4; an upper die movably provided above the lower die assembly.

9. The stamping die of claim 8, wherein, An upper die surface of the upper die is obliquely provided; The stamping die further includes a side die movably provided on a lateral side of the lower die, and configured to press the material to be punched against the lower die, the side die being provided with an elastic member abutting against the upper die when matched with the lower die, to provide the upper die surface with an elastic force for laterally pressing the material to be punched.

10. The stamping die of claim 8, wherein, One of the lower die and the upper die is provided with a second vertical portion extending in a vertical direction, and the other is provided with a second matching portion slidingly matched with the second vertical portion.

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