Stamping die

Abstract

The embodiment of the utility model relates to the technical field of stamping, and discloses a stamping die which comprises an upper die body and a lower die body, the upper die body is located above the lower die body and movably matched with the lower die body, and the upper die body is used for being connected with a stamping blank and driving the stamping blank to move towards the lower die body. The stamping die further comprises a material supporting mechanism, the material supporting mechanism is connected with the lower die, the material supporting mechanism comprises an ejector rod capable of moving telescopically, and the ejector rod is used for supporting the stamping blank when the stamping blank moves towards the lower die. In this way, downward hanging of the stamping blank can be effectively reduced or avoided, the situation that too many materials exist in the stamping forming process due to downward hanging of the stamping blank can be prevented, wrinkles of stamping parts can be effectively reduced or avoided, and therefore the qualification rate of the stamping parts is effectively increased.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of stamping technology, and in particular to a stamping die. Background Art

[0002] Stamping is a forming process that uses a press and a die to apply external force to plates, strips, pipes and profiles to cause them to undergo plastic deformation or separation, thereby obtaining workpieces (stamping parts) of the desired shape and size. It is widely used in industrial production.

[0003] A stamping die consists of an upper die and a lower die. The upper die is located above the lower die. During the stamping process, the upper die can move up and down to close the mold with the lower die. As the upper die descends, it can also drive the stamping blank toward the lower die. The upper and lower dies are then combined to form a stamped part. Currently, for larger stamping parts, when the upper die drives the stamping blank toward the lower die, the stamping blank will sag downward due to insufficient rigidity due to its large size. During the stamping process, the excessive material will cause wrinkling, which reduces the yield rate of the finished stamped part. Utility Model Content

[0004] In view of this, an embodiment of the present application provides a stamping die that can effectively reduce or avoid wrinkles on stamping parts, thereby effectively improving the pass rate of stamping parts.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the embodiment of the present application is implemented as follows:

[0006] The present application provides a stamping die, comprising:

[0007] Lower mold;

[0008] An upper die, which can be raised and lowered to engage with the lower die and drive the stamping blank to move synchronously during its stamping stroke;

[0009] It also includes a supporting mechanism, including a push rod that is telescopically movably arranged in the lower mold, the push rod is used to extend out of the lower mold to support the stamping blank during the stamping stroke of the upper mold, and retract into the lower mold as the stamping of the upper mold is formed after the stamping blank is supported.

[0010] The embodiment of the present application is provided with a supporting mechanism in the stamping die, and the ejector pin in the supporting mechanism supports the stamping blank during the stamping stroke of the upper die. This can effectively reduce or prevent the stamping blank from sagging downward, can prevent the stamping blank from sagging and the occurrence of excessive material during the stamping forming process, can effectively reduce or prevent the occurrence of wrinkles in the stamping parts, thereby effectively improving the qualified rate of the stamping parts. After the ejector pin forms support with the stamping blank, as the stamping stroke of the upper die is retracted into the lower die, it can prevent the ejector pin from continuing to support the stamping blank during the stamping forming process, thereby forming an imprint on the stamping part, affecting the finished product yield of the stamping part.

[0011] In a possible implementation of the present application, the lower mold has a receiving cavity on a surface facing away from the upper mold, and the supporting mechanism is located in the receiving cavity;

[0012] A through hole is provided at one end of the lower die toward the upper die, and the through hole is communicated with the accommodating cavity. The ejector rod extends out of the lower die through the through hole during the stamping stroke of the upper die to support the stamped blank, and retracts into the lower die through the through hole as the upper die stamps.

[0013] In a possible implementation of the present application, a driving device is further included, which is located at one end of the lower die facing away from the upper die. The driving device has a driving push rod, which is used to drive the push rod to extend out of the lower die during the stamping stroke of the upper die to support the stamped blank, and the driving force of the driving push rod partially offsets the stamping force of the upper die, so that the push rod retracts into the lower die along with the stamping stroke of the upper die.

[0014] In a possible implementation of the present application, the supporting mechanism further includes:

[0015] A mounting seat, the mounting seat is connected to the lower mold, the ejector rod is passed through the mounting seat and slidably cooperates with the mounting seat;

[0016] The mounting seat is provided with a limit platform, and the ejector rod is provided with a limit shoulder that cooperates with the limit platform. The limit platform is used to limit the ejector rod after the stamping blank contacts the lower die to prevent the ejector rod from continuing to descend.

[0017] In a possible implementation of the present application, the supporting mechanism further includes:

[0018] An elastic return member, one end of which is connected to the lower die, and the other end is connected to the ejection rod. The elastic return member is in a compressed elastic state when the ejection rod extends out of the lower die. The elastic return member is used to drive the ejection rod to retract into the lower die after the stamping blank moves to the lower die.

[0019] In a possible implementation of the present application, the supporting mechanism further includes:

[0020] A guide member is sleeved on the ejecting rod, and the guide member is located between the ejecting rod and the mounting seat.

[0021] In a possible implementation of the present application, the supporting mechanism further includes:

[0022] A push rod leg, one end of which is connected to the push rod, and the other end is connected to the driving push rod, and the driving push rod drives the push rod to extend out of the lower mold through the push rod leg.

[0023] In a possible implementation of the present application, the supporting mechanism further includes:

[0024] A push rod leg mounting seat, one end of which is connected to the push rod leg, and the other end of which is connected to the ejector rod, and the push rod leg is connected to the ejector rod through the push rod leg mounting seat.

[0025] In a possible implementation of the present application, the following is further included:

[0026] A blank holder ring is arranged around the outer periphery of the lower die and cooperates with the movement of the lower die. When the upper die drives the stamping blank to move toward the lower die, the outer edge of the stamping blank is located between the blank holder ring and the upper die.

[0027] In a possible implementation of the present application, the supporting mechanism is arranged near the center of the lower die, so that the ejector rod supports the center of the stamping blank. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A cross-sectional view of a stamping die provided in an embodiment of the present application at a certain cross section;

[0029] Figure 2 A cross-sectional view of a stamping die provided in an embodiment of the present application under another cross-section;

[0030] Figure 3 A schematic structural diagram of a material supporting mechanism provided in an embodiment of the present application;

[0031] Figure 4An exploded schematic diagram of a material supporting mechanism provided in an embodiment of the present application;

[0032] Figure 5 A cross-sectional view of a material supporting mechanism provided in an embodiment of the present application.

[0033] Reference numerals:

[0034] 100-stamping die;

[0035] 110-lower die;

[0036] 111 - accommodating cavity; 112 - through hole; 113 - assembly seat;

[0037] 120-upper mold;

[0038] 130-supporting mechanism;

[0039] 131- ejector rod; 1311- limiting shoulder;

[0040] 132-mounting seat; 1321-limiting platform;

[0041] 133- elastic reset member;

[0042] 134-guide member;

[0043] 135-jack leg;

[0044] 136-jack leg mounting seat;

[0045] 137- ejector rod mounting seat;

[0046] 140-Binder ring. DETAILED DESCRIPTION

[0047] To make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the specific technical solutions of the present application will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application but are not intended to limit the scope of the present application.

[0048] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of this application, unless otherwise specified, "multiple" means two or more.

[0049] In addition, in the embodiments of the present application, directional terms such as "up", "down", "left" and "right" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they may change accordingly according to changes in the orientation of the components in the drawings.

[0050] In the embodiments of the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integrated connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0051] In the embodiments of the present application, the terms "comprises," "comprising," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0052] In the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of this application should not be interpreted as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0053] As described in the background technology above, a stamping die includes an upper die and a lower die. The upper die is located above the lower die. During the stamping process, the upper die can move up and down to close the mold with the lower die. As the upper die descends, it can drive the stamping blank toward the lower die. After the upper and lower dies are combined, they are stamped to form a stamped part. Currently, for larger stamping parts, when the upper die drives the stamping blank toward the lower die, the stamping blank is too large and will sag downward due to insufficient rigidity. During the stamping process, the problem of wrinkling will occur due to the excessive material, which reduces the yield rate of the finished stamped parts.

[0054] To address the aforementioned issues, the present invention provides a stamping die in which a support mechanism is provided, and a push rod in the support mechanism supports the stamping blank during the stamping stroke of the upper die. This effectively reduces or prevents the stamping blank from sagging downward, preventing the stamping blank from sagging and causing excess material during the stamping process, and effectively reduces or prevents wrinkles in stamped parts, thereby effectively improving the qualified rate of stamped parts.

[0055] The stamping die provided in the embodiment of the present application is described in detail below with reference to the accompanying drawings.

[0056] Figure 1 A cross-sectional view of a stamping die provided in an embodiment of the present application at a certain cross section is shown. Figure 2 A cross-sectional view of a stamping die provided in an embodiment of the present application under another cross-section.

[0057] The present application embodiment provides a stamping die 100, which can be used to prepare stamping parts. Figure 1 and Figure 2 As shown, the stamping die 100 may include a lower die 110 and an upper die 120, wherein the upper die 120 may be located above the lower die 110 and may move up and down to close the mold with the lower die 110. During the stamping stroke of the upper die 120, the upper die 120 may drive the stamping blank to move synchronously.

[0058] Specifically, when the upper die 120 is located above the lower die 110, the upper die 120 drives the stamping blank toward the lower die 110 and closes with the lower die 110. After the upper die 120 and the lower die 110 are closed, a stamping cavity can be defined between the upper die 120 and the lower die 110. The stamping blank can be located within the stamping cavity, and a stamped part can be formed under the stamping force between the upper die 120 and the lower die 110. After the stamped part is formed, the upper die 120 can be moved away from the lower die 110, that is, the upper die 120 rises to open the stamping cavity to remove the stamped part, thereby completing a stamping operation.

[0059] See also Figure 2 As shown, the stamping die 100 may further include a supporting mechanism 130, which may be connected to the lower die 110. The supporting mechanism 130 may include a push rod 131 that is telescopically movably disposed in the lower die 110. The push rod 131 may be used to extend outside the lower die 110 to support the stamping blank during the stamping stroke of the upper die 120, and to retract into the lower die 110 as the stamping stroke of the upper die 120 is completed after forming support with the stamping blank. This can effectively reduce or avoid the stamping blank from sagging downward, prevent the stamping blank from sagging and causing excess material during the stamping process, effectively reduce or avoid wrinkles in stamped parts, and thus effectively improve the qualified rate of stamped parts. After the ejector pin 131 forms support with the stamping blank, it retracts into the lower die 110 as the upper die 120 completes the stamping stroke. This can prevent the ejector pin from continuing to support the stamping blank during the stamping process, thereby preventing the stamping blank from forming a mark on the stamped part and affecting the yield rate of the finished stamped part.

[0060] Continue to see Figure 2As shown, the stamping die 100 may further include a blank holder 140, which may be disposed around the outer periphery of the lower die 110 and move in conjunction with the lower die 110. When the upper die 120 drives the stamping blank to move toward the lower die 110, the outer edge of the stamping blank may be located between the blank holder 140 and the upper die 120. The blank holder 140 and the upper die 120 may secure the stamping blank so that the stamping blank may be secured to the upper die 120 and move with the upper die 120 toward the lower die 110. This may effectively improve the firmness and reliability of the connection between the stamping blank and the upper die 120, thereby effectively improving the operational stability of the stamping die 100.

[0061] In the embodiment of the present application, the support mechanism 130 can be arranged near the center of the lower die 110 so that the ejector pin 131 can support the center of the stamping blank. This can improve the uniformity of the support provided by the ejector pin 131 to the stamping blank and effectively reduce or avoid sagging and deformation of the stamping blank.

[0062] Continue to see Figure 2 As shown, the side facing away from the upper die 120 may have a receiving cavity 111, and the supporting mechanism 130 may be located within the receiving cavity 111. For example, the side of the lower die 110 facing away from the upper die 120 may have multiple receiving cavities 111, and the supporting mechanism 130 may be located within one of the receiving cavities 111. On the one hand, the receiving cavity 111 provides installation space for the supporting mechanism 130, which can reduce or avoid the supporting mechanism 130 being set in other locations and occupying space in the stamping die 100, thereby facilitating the spatial layout of the stamping die 100. Moreover, the receiving cavity 111 also helps reduce the weight of the lower die 110, thereby reducing the material cost of molding the lower die 110.

[0063] For example, the supporting mechanism 130 may be located in the accommodating cavity 111 near the center of the lower mold 110 , so that the supporting mechanism 130 can support the center of the stamping blank.

[0064] Continue to see Figure 2 As shown, a through hole 112 can be opened at one end of the lower mold 110 facing the upper mold 120, and the through hole 112 can be connected to the accommodating cavity 111. The ejector rod 131 can extend from the lower mold 110 through the through hole 112 during the stamping stroke of the upper mold 120 to support the stamping blank, and retract into the lower mold 110 through the through hole 112 as the upper mold 120 stamps.

[0065] For example, while the upper die 120 is moving the stamping blank, the ejector pins 131 of the support mechanism 130 can extend from the lower die 110 through the through-holes 112 to support the stamping blank. Furthermore, as the upper die 120 and the stamping blank descend, the ejector pins 131 also descend with the stamping blank until the stamping blank lands on the lower die 110. At this point, the ejector pins 131 can be retracted into the lower die 110 to reduce or prevent the ejector pins 131 from extending from the lower die 110 and adversely affecting the forming of the stamped part.

[0066] In an embodiment of the present application, the stamping die 100 may further include a driving device (not shown in the figure), which may be located at one end of the lower die 110 facing away from the upper die 120, and the driving device may have a driving push rod, which may be used to drive the push rod 131 to extend out of the lower die 110 during the stamping stroke of the upper die 120 to support the stamping blank, and the driving force of the driving push rod partially offsets the stamping force of the upper die 120, so that the push rod 131 retracts into the lower die 110 along with the stamping stroke of the upper die 120.

[0067] For example, when the upper die 120 drives the stamping blank to move, the driving push rod can push up the push rod 131 in the supporting mechanism 130, so that the push rod 131 can extend out of the lower die 110 through the through hole 112 to support the stamping blank. Moreover, as the upper die 120 and the stamping blank descend, the push rod 131 also descends along with the stamping blank under the combined force of the upper die 120 and the push rod 131.

[0068] For example, the driving force of the upper die 120 on the ejector pin 131 can be greater than the driving force of the driving ejector pin on the ejector pin 131, so that the resultant force on the ejector pin 131 is downward, thereby causing the ejector pin 131 to move downward. Until the stamped blank falls onto the lower die 110, at which time the driving ejector pin can withdraw the driving force on the ejector pin 131, so that the ejector pin 131 can be retracted into the lower die 110, thereby reducing or avoiding the ejector pin 131 extending out of the lower die 110 and having an adverse effect on the forming of the stamped part.

[0069] Figure 3 This is a structural diagram of a material supporting mechanism provided in an embodiment of the present application. Figure 4 This is an exploded schematic diagram of a material support mechanism provided in an embodiment of the present application. Figure 5 A cross-sectional view of a material supporting mechanism provided in an embodiment of the present application.

[0070] Continue to see Figure 2 and Figure 3 As shown, the supporting mechanism 130 may further include a mounting base 132, which may be connected to the lower mold 110. Figure 4 and Figure 5As shown, the ejector pin 131 can be inserted into the mounting seat 132 and slidably engaged with the mounting seat 132. The mounting seat 132 can have a limiting platform 1321, and the ejector pin 131 can have a limiting shoulder 1311 that cooperates with the limiting platform 1321. The limiting platform 1321 can be used to limit the ejector pin 131 after the stamping blank contacts the lower die 110, so as to prevent the ejector pin 131 from continuing to descend.

[0071] For example, when the ejector pin 131 moves downward under the combined force of the upper die 120 and the driving ejector pin, when the stamping blank descends to the lower die 110, the ejector pin 131 moves into the lower die 110. The stopper 1321 can limit the ejector pin 131 to prevent it from continuing to descend, and the driving ejector pin withdraws the driving force on the ejector pin 131 so that the ejector pin 131 can stay on the stopper 1321, thereby completing a stamping operation.

[0072] Continue to see Figure 2 As shown, an assembly seat 113 can be provided on the lower mold 110, and the mounting seat 132 can be connected to the assembly seat 113. The supporting mechanism 130 can be connected through the cooperation between the mounting seat 132 and the assembly seat 113. This can facilitate the connection and fixation between the supporting mechanism 130 and the lower mold 110, and can improve the reliability and stability of the connection between the supporting mechanism 130 and the lower mold 110.

[0073] Continue to see Figure 3 and Figure 4 As shown, the supporting mechanism 130 may further include an elastic reset member 133, Figure 5 As shown, one end of the elastic reset member 133 can be connected to the lower mold 110 (refer to Figure 2 The other end of the ejector pin 131 is connected to the ejector pin 131. The elastic return member 133 can be in a compressed elastic state when the ejector pin 131 extends out of the lower die 110. The elastic return member 133 can be used to drive the ejector pin 131 to retract into the lower die 110 after the stamping blank moves to the lower die 110.

[0074] For example, when the ejector pin 131 moves downward under the combined force of the upper die 120 and the driving ejector pin, the stamping blank drops to the lower die 110. The driving ejector pin withdraws the driving force on the ejector pin 131. At this time, the elastic reset member 133 in the compressed elastic state can have a rebound force. The rebound force can drive the ejector pin 131 to retract into the lower die 110 to reduce or avoid the ejector pin 131 being stuck in the through hole 112 and unable to retract into the lower die 110 in time. The ejector pin 131 can be placed so as to protrude from the lower die 110 and affect the forming of the stamped parts. This helps to improve the reliability and stability of the operation of the stamping die 100 and improve the qualified rate of stamped parts.

[0075] Continue to see Figure 4 and Figure 5 As shown, the supporting mechanism 130 may further include a guide member 134, which may be sleeved on the ejecting rod 131 and located between the ejecting rod 131 and the mounting seat 132. The guide member 134 may provide guidance and lubrication between the ejecting rod 131 and the mounting seat 132, thereby reducing or avoiding wear caused by direct contact between the guide member 134 and the mounting seat 132, and helping to improve the stability and smoothness of the lifting and lowering of the ejecting rod 131.

[0076] The guide member 134 and the ejector rod 131 can be detachably matched. When the guide member 134 is worn, the guide member 134 can be removed and replaced with a new one. The replacement is convenient and the maintenance of the supporting mechanism 130 is convenient.

[0077] Continue to see Figure 4 and Figure 5 As shown, the supporting mechanism 130 may further include a push rod leg 135, one end of which may be connected to the push rod 131, and the other end of which may be connected to the driving push rod. The driving push rod may drive the push rod 131 to extend out of the lower die 110 through the push rod leg 135. In this way, when the push rod 131 needs to eject the stamping blank, the driving push rod can move a small distance to act on the push rod leg 135, so as to drive the push rod 131 to move upward through the push rod leg 135, which can facilitate the transmission of force between the driving push rod and the push rod 131, thereby improving the stability and reliability of the driving push rod on the push rod 131.

[0078] Continue to see Figure 4 and Figure 5 As shown, the supporting mechanism 130 further includes a push rod leg mounting seat 136. One end of the push rod leg mounting seat 136 can be connected to the push rod leg 135, and the other end can be connected to the push rod 131. The push rod leg 135 can be connected to the push rod 131 through the push rod leg mounting seat 136. For example, the number of push rod legs 135 can be more than two. In the embodiment of the present application, two push rod legs 135 are used as an example. The push rod legs 135 can be connected to the push rod leg mounting seat 136 to be connected to the push rod 131 through the push rod leg mounting seat 136.

[0079] The push rod leg mounting seat 136 can convert the force exerted by the push rod leg 135 on the push rod 131 from a smaller action surface to a larger action surface, which can reduce or avoid the tilting of the push rod leg 135 during the process of driving the push rod 131, and help to improve the reliability and stability of the push rod leg 135 in exerting force on the push rod 131.

[0080] Continue to see Figure 4 and Figure 5As shown, the supporting mechanism 130 further includes a ejector rod mounting seat 137, one end of which can be connected to the ejector rod 131, and the other end of which can be connected to the ejector rod leg mounting seat 136. The ejector rod leg mounting seat 136 can be connected to the ejector rod 131 through the ejector rod mounting seat 137. For example, the number of ejector rods 131 can be more than two. In the embodiment of the present application, the number of ejector rods 131 is two, and the ejector rod 131 can be connected to the ejector rod mounting seat 137 to be connected to the ejector rod leg mounting seat 136 through the ejector rod mounting seat 137.

[0081] For example, during the assembly process, the ejector leg 135 can be installed on the ejector leg mounting seat 136, the ejector pin 131 can be installed on the ejector pin mounting seat 137, and then the ejector leg mounting seat 136 can be connected to the ejector pin mounting seat 137, so that the ejector pin 131 and the ejector leg 135 are connected through the ejector leg mounting seat 136 and the ejector pin mounting seat 137. This can facilitate the assembly between the ejector pin 131 and the ejector leg 135 and improve the assembly efficiency of the supporting mechanism 130.

[0082] The serial numbers of the embodiments of this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are only preferred embodiments of this application and do not limit the scope of the patent of this application. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the scope of patent protection of this application.

Claims

1. A stamping die, characterized in that: include: Lower mold (110); An upper die (120), the upper die (120) being capable of lifting and lowering to engage with the lower die (110), and driving the stamping blank to move synchronously during its stamping stroke; The supporting mechanism (130) includes a supporting rod (131) which is telescopically movably arranged in the lower die (110), and is used to extend out of the lower die (110) to support the stamping blank during the stamping stroke of the upper die (120), and retract into the lower die (110) along with the stamping stroke of the upper die (120) after forming support with the stamping blank.

2. The stamping die according to claim 1, characterized in that: The lower mold (110) has a receiving cavity (111) on a side facing away from the upper mold (120), and the supporting mechanism (130) is located in the receiving cavity (111); A through hole (112) is provided at one end of the lower die (110) facing the upper die (120), and the through hole (112) is connected to the accommodating cavity (111). The ejector rod (131) extends out of the lower die (110) through the through hole (112) during the punching stroke of the upper die (120) to support the punched blank, and retracts into the lower die (110) through the through hole (112) as the punching stroke of the upper die (120) progresses.

3. The stamping die according to claim 2, characterized in that: The invention also includes a driving device, which is located at one end of the lower mold (110) facing away from the upper mold (120), and has a driving push rod, which is used to drive the push rod (131) to extend out of the lower mold (110) during the punching stroke of the upper mold (120) to support the punched blank, and the driving force of the driving push rod partially offsets the punching force of the upper mold (120), so that the push rod (131) retracts into the lower mold (110) along with the punching stroke of the upper mold (120).

4. The stamping die according to any one of claims 1 to 3, characterized in that: The supporting mechanism (130) further includes: A mounting seat (132), the mounting seat (132) is connected to the lower mold (110), and the ejector rod (131) is arranged in the mounting seat (132) and is slidably matched with the mounting seat (132); The mounting seat (132) is provided with a limiting platform (1321), and the ejector rod (131) is provided with a limiting shoulder (1311) that cooperates with the limiting platform (1321). The limiting platform (1321) is used to limit the ejector rod (131) after the stamping blank contacts the lower die (110) to prevent the ejector rod (131) from continuing to descend.

5. The stamping die according to claim 4, characterized in that: The supporting mechanism (130) further includes: An elastic return member (133), one end of the elastic return member (133) is connected to the lower die (110), and the other end is connected to the ejector rod (131), the elastic return member (133) is in a compressed elastic state when the ejector rod (131) extends out of the lower die (110), and the elastic return member (133) is used to drive the ejector rod (131) to retract into the lower die (110) after the stamping blank moves to the lower die (110).

6. The stamping die according to claim 4, characterized in that: The supporting mechanism (130) further includes: A guide member (134) is sleeved on the ejector rod (131), and the guide member (134) is located between the ejector rod (131) and the mounting seat (132).

7. The stamping die according to claim 3, characterized in that: The supporting mechanism (130) further includes: A push rod leg (135), one end of the push rod leg (135) is connected to the push rod (131), and the other end is connected to the driving push rod, and the driving push rod drives the push rod (131) to extend out of the lower mold (110) through the push rod leg (135).

8. The stamping die according to claim 7, characterized in that: The supporting mechanism (130) further includes: A push rod leg mounting seat (136), one end of the push rod leg mounting seat (136) is connected to the push rod leg (135), and the other end is connected to the ejector rod (131); the push rod leg (135) is connected to the ejector rod (131) through the push rod leg mounting seat (136).

9. The stamping die according to any one of claims 1 to 3, characterized in that: Also includes: A pressure ring (140) is arranged around the outer periphery of the lower die (110) and moves in coordination with the lower die (110); when the upper die (120) drives the stamping blank to move toward the lower die (110), the outer edge of the stamping blank is located between the pressure ring (140) and the upper die (120).

10. The stamping die according to any one of claims 1 to 3, characterized in that: The supporting mechanism (130) is arranged close to the center of the lower die (110) so that the ejector rod (131) supports the center of the stamping blank.

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