Lower die and stamping system

Abstract

The invention discloses a lower die and a stamping system. The lower die comprises a lower die base, a driving mechanism and a plurality of supporting mechanisms. A plurality of supporting mechanisms are arranged in the lower die, the multiple supporting mechanisms are distributed in a second bearing area of the lower die base, and the supporting mechanisms abut against the end of a second ejector rod. Thus, in the second bearing area, the supporting mechanism can be matched with the second ejector rod to provide pressure for components in the lower die. As the area of the end, away from the second ejector rod, of the supporting mechanism is larger than that of the end, facing the supporting mechanism, of the second ejector rod, the supporting mechanism can avoid the problem that the second ejector rod is dislocated when the size of the lower die is too large, and it is ensured that the driving mechanism can apply acting force; therefore, the stamping forming effect of the stamping system applying the lower die can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of automobile production equipment, and in particular to a lower mold and a stamping system. Background Art

[0002] The stamping system is a system that uses stamping to manufacture automotive parts.

[0003] At present, the push rod of the press is usually used to provide pressure to the stamping system. For the blank holder in the stamping system, it is set at the edge of the stamping system. The push rod of the press can contact the push rod leg of the blank holder to achieve the effect of lifting the blank holder.

[0004] However, the oversized size of the above-mentioned stamping system may cause the machine tool push rod and the push rod legs of the blank holder to be misaligned, making it impossible for the push rod to lift the blank holder, which in turn may lead to poor stamping effect of the stamping system. Summary of the invention

[0005] The embodiment of the present application provides a lower mold and a stamping system. The technical solution is as follows:

[0006] According to one aspect of the present application, a lower mold is provided, the lower mold comprising: a lower mold base, a driving mechanism and a plurality of supporting mechanisms;

[0007] The lower mold base has a first bearing area and a second bearing area, the second bearing area is distributed around the first bearing area, the first bearing area has a plurality of first through holes, and the second bearing area has a plurality of second through holes;

[0008] The driving mechanism comprises: a plurality of first push rods and a plurality of second push rods, the plurality of first push rods correspond to the plurality of first through holes, and the first push rods can pass through the corresponding first through holes to extend out of the first through holes;

[0009] The plurality of support mechanisms correspond to the plurality of second through holes and the plurality of second push rods, and the support mechanisms are installed in the corresponding second through holes and abut against the ends of the corresponding second push rods;

[0010] Wherein, an area of ​​an end of the support mechanism away from the second push rod is larger than an area of ​​an end of the second push rod toward the support mechanism.

[0011] Optionally, the support mechanism comprises: a support rod, and a guide structure sleeved on the outside of the support rod;

[0012] The guide structure is installed in the second through hole, and the guide structure is movably connected to the support rod; one end of the support rod abuts against the end of the second push rod, and the end of the support rod away from the second push rod has a first boss, and the first boss is located outside the second through hole.

[0013] Optionally, the second bearing area further has an avoidance hole, and the avoidance hole is connected to an end of the second through hole away from the second push rod;

[0014] Wherein, when the supporting mechanism is in a retracted state, at least a portion of the first boss is located in the avoidance hole.

[0015] Optionally, the support mechanism further comprises: a cushion block connected to one end of the support rod facing the second push rod, a side of the cushion block facing away from the support rod abuts against an end of the second push rod, and the cushion block is located outside the second through hole;

[0016] Wherein, the hardness of the cushion block is greater than the hardness of the support rod.

[0017] Optionally, the support mechanism further includes: an annular buffer block, which is sleeved on the outside of the support rod and is located between the first boss and the guide structure.

[0018] Optionally, the guide structure comprises: a sleeve, and a fixing member fixedly connected to the sleeve;

[0019] The sleeve is located in the second through hole, and the sleeve is sleeved on the support rod and is slidably connected to the support rod; the fixing member is fixedly connected to the lower die seat;

[0020] Wherein, the axial direction of the sleeve is parallel to the axial direction of the support rod.

[0021] Optionally, the side surface of the support rod has an anti-rotation edge, and the fixing member is arranged in contact with the anti-rotation edge.

[0022] Optionally, the lower mold further includes: a first main mold core and a first pressure ring, the first main mold core and the first pressure ring are located on the side of the lower mold base away from the driving mechanism, the first main mold core is distributed in the first bearing area, and the first pressure ring is distributed in the second bearing area.

[0023] Optionally, one end of the support mechanism away from the second push rod is arranged in contact with the first pressure ring.

[0024] On the other hand, a stamping system is provided, comprising: an upper die and any one of the above-mentioned lower dies, wherein the upper die is arranged opposite to the lower die.

[0025] The beneficial effects brought by the technical solution provided by the embodiment of the present application include at least:

[0026] By arranging a plurality of support mechanisms in the lower mold, the plurality of support mechanisms are distributed in the second bearing area of ​​the lower mold base, and the support mechanisms abut against the end of the second ejector pin. In this way, in the second bearing area, the support mechanism can cooperate with the second ejector pin to provide pressure to the components in the lower mold. Since the area of ​​the end of the support mechanism away from the second ejector pin is larger than the area of ​​the end of the second ejector pin facing the support mechanism, the support mechanism can avoid the problem of the second ejector pin being misaligned when the size of the lower mold is too large, and ensure that the driving mechanism can apply a force, thereby improving the stamping forming effect of the stamping system using the lower mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 It is a schematic diagram of a top view structure of a stamping system provided by the related technology;

[0029] Figure 2 yes Figure 1 A cross-sectional view of the punching system at A1-A1 is provided;

[0030] Figure 3 It is a structural schematic diagram of a lower mold provided in an embodiment of the present application;

[0031] Figure 4 yes Figure 3 A cross-sectional view of the lower mold at A2-A2 is provided;

[0032] Figure 5 yes Figure 3 A schematic diagram of the top view of the lower die seat in the provided lower die;

[0033] Figure 6 yes Figure 3 A partial cross-sectional schematic diagram of a part of the structure in the lower mold is provided;

[0034] Figure 7 is a schematic diagram of a three-dimensional structure of a support mechanism provided in an embodiment of the present application;

[0035] Figure 8 yes Figure 3 A partial cross-sectional schematic diagram of a support mechanism of a lower mold provided in a retracted state;

[0036] Fig. 9 yes Figure 3 A partial cross-sectional schematic diagram of a supporting mechanism of a lower mold provided in a working state;

[0037] Fig.10 yes Figure 7 A side view of a support mechanism is provided;

[0038] Fig.11 yes Figure 7 Another side view of the support mechanism is provided;

[0039] Fig.12 yes Figure 3 A partial schematic diagram of some structures in the lower mold is provided.

[0040] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0041] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0042] The stamping system uses stamping technology to transform the blank into a part with a specific shape through plastic deformation. Figure 1 , Figure 1 It is a schematic diagram of a top view structure of a stamping system provided by the relevant technology. Figure 1 The stamping system M shown may be a drawing die for producing an inner plate or an outer plate of an engine cover. Currently, the stamping system M may adopt a one-mold-multiple-piece production mode, and simultaneously produce multiple parts of the same or similar shapes, which is conducive to improving manufacturing efficiency.

[0043] However, when the product size is larger, or when the above-mentioned one-mold-multiple-piece production method is adopted, the required mold size will be larger. Please refer to Figure 2 , Figure 2 yes Figure 1 A cross-sectional view of the punching system at A1-A1 is provided (to clearly illustrate the situation of the ejector pin, Figure 2Only the lower die in the stamping system is shown). The stamping system M includes: a lower die base 100, a drive mechanism 200, a first main die core 400 and a first blank holder 500. The drive mechanism 200 includes a plurality of ejector pins. In the case where the die size is large, that is, the size of the first main die core 400 will be large, so that even the outermost ejector pin will be offset from the ejector pin leg of the first blank holder 500, resulting in the inability to lift up the first blank holder 500, which will lead to poor stamping effect of the stamping system M.

[0044] In some related technologies, nitrogen cylinders are used to replace ejector rods as the driving mechanism 200. In the case where nitrogen cylinders replace part of the ejector rods corresponding to the first blank holder 500, the consistency between the nitrogen cylinders and the ejector rods is poor, which affects the production stability, and it is necessary to increase nitrogen cylinders in multiple directions at the same time to ensure the balance of the first blank holder 500, resulting in the need to increase the size of the first blank holder 500 and the size of the first main mold core 400. In the case where nitrogen cylinders replace all ejector rods, the number of nitrogen cylinders required is large and the stroke is large, and the nitrogen cylinders are consumable parts and need to be replaced after a period of use, which will result in a higher cost for the stamping system M. In addition, due to the limited working frequency of the nitrogen cylinder, it is not suitable for high-speed line production.

[0045] The present application embodiment provides a lower mold, please refer to Figure 3 , Figure 4 and Figure 5 , Figure 3 is a structural schematic diagram of a lower mold provided in an embodiment of the present application, Figure 4 yes Figure 3 A cross-sectional view of the lower mold at A2-A2 is provided. Figure 5 yes Figure 3 A schematic diagram of a top view of a lower die base in a lower die is provided, wherein the lower die 000 comprises: a lower die base 100, a drive mechanism 200 and a plurality of support mechanisms 300. In the embodiment of the present application, the stamping system using the lower die 000 can be used to manufacture large-sized products, such as an engine hood inner panel, an engine hood outer panel and four-door outer panels, etc., but the embodiment of the present application is not limited thereto.

[0046] The lower mold base 100 has a first bearing area Q1 and a second bearing area Q2, the second bearing area Q2 is distributed around the first bearing area Q1, the first bearing area Q1 has a plurality of first through holes K1, and the second bearing area Q2 has a plurality of second through holes K2. Here, the lower mold base 100 can be used to carry other components in the lower mold 000, and the components carried by the first bearing area Q1 are different from the components carried by the second bearing area Q2.

[0047] The driving mechanism 200 includes: a plurality of first ejector pins 210 and a plurality of second ejector pins 220, the plurality of first ejector pins 210 correspond to the plurality of first through holes K1, and the first ejector pins 210 can pass through the corresponding first through holes K1 to extend out of the first through holes K1. Here, the driving mechanism 200 can be used to provide pressure to the components carried by the lower mold base 100. The distribution area of ​​the plurality of first ejector pins 210 can correspond to the first bearing area Q1, and the distribution area of ​​the plurality of second ejector pins 220 can correspond to the second bearing area Q2. Exemplarily, the driving mechanism 200 can be a press, and the driving mechanism 200 can also include: a lower table 230, the plurality of first ejector pins 210 and the plurality of second ejector pins 220 all pass through the lower table 230, and the lower mold base 100 can be placed on the lower table 230.

[0048] The plurality of support mechanisms 300 correspond to the plurality of second through holes K2 and to the plurality of second push rods 220. The support mechanisms 300 are installed in the corresponding second through holes K2 and abut against the ends of the corresponding second push rods 220. Here, the distribution area of ​​the plurality of support mechanisms 300 may correspond to the second bearing area Q2. When the second push rod 220 moves toward the corresponding support mechanism 300, the support mechanism 300 may be lifted and moved in a direction away from the driving mechanism 200, so that the components carried by the second bearing area Q2 may be lifted. That is, the support mechanism 300 and the corresponding second push rod 220 may cooperate to lift the components carried by the second bearing area Q2.

[0049] The area of ​​the end of the support mechanism 300 away from the second push rod 220 is larger than the area of ​​the end of the second push rod 220 facing the support mechanism 300. Here, the end of the support mechanism 300 away from the second push rod 220, that is, the end that needs to contact the component carried by the second bearing area Q2, is set to have a larger area, so that pressure can be provided even when the size of the component carried by the second bearing area Q2 is large.

[0050] By providing the support mechanism 300, it is also possible to avoid a significant change in the structure of the components carried by the second carrying area Q2, thereby preventing the structural change from affecting the assembly of the components that the lower mold base 100 needs to carry. Figure 2 The first blank holding ring 500 in the related technology shown is designed to align the push rod of the driving mechanism 200 with the push rod leg of the first blank holding ring 500. If the push rod leg of the first blank holding ring 500 is moved inward, the first blank holding ring 500 cannot be removed, and the first main mold core 400 cannot be assembled or disassembled.

[0051] In summary, the embodiment of the present application provides a lower mold, by arranging multiple support mechanisms in the lower mold, the multiple support mechanisms are distributed in the second bearing area of ​​the lower mold base, and the support mechanisms are in contact with the end of the second ejector rod. In this way, in the second bearing area, the support mechanism can cooperate with the second ejector rod to provide pressure to the components in the lower mold. Since the area of ​​the end of the support mechanism away from the second ejector rod is larger than the area of ​​the end of the second ejector rod facing the support mechanism, the support mechanism can avoid the problem of misalignment of the second ejector rod when the size of the lower mold is too large, and ensure that the driving mechanism can apply a force, thereby improving the stamping forming effect of the stamping system using the lower mold.

[0052] In the embodiment of the present application, the lower mold 000 also includes: a first main mold core 400 and a first pressure ring 500. The first main mold core 400 and the first pressure ring 500 are located on the side of the lower mold base 100 away from the driving mechanism 200. The first main mold core 400 is distributed in the first bearing area Q1, and the first pressure ring 500 is distributed in the second bearing area Q2.

[0053] Among them, in the upper mold arranged opposite to the lower mold 000, a second main mold core corresponding to the first main mold core 400 may be included. One of the first main mold core 400 and the second main mold core may be a convex mold, and the other of the first main mold core 400 and the second main mold core may be a concave mold. The first main mold core 400 and the second main mold core are used together to stamp and form the blank under the action of pressure, so that the blank can be plastically deformed into a desired shape and size. Exemplarily, the first main mold core 400 may be a convex mold, and the second main mold core may be a concave mold.

[0054] The first pressure ring 500 may be an annular structure for extruding the blank, which ensures that the blank is evenly stressed during the stretching process and prevents the blank from twisting, bending, and other undesirable phenomena during the stretching process, thereby improving the stamping effect.

[0055] Optionally, one end of the support mechanism 300 away from the second push rod 220 is arranged in contact with the first blank holder 500. Therefore, the force source provided by the second push rod 220 in the driving mechanism 200 is transmitted to the first blank holder 500 through the support mechanism 300, that is, the support mechanism 300 and the corresponding second push rod 220 can cooperate to lift the first blank holder 500.

[0056] In addition, since the first blank holder 500 does not need to contact the second push rod 220, the first blank holder 500 may not need to be provided with a push rod leg, that is, the surface where the first blank holder 500 contacts the support mechanism 300 may be a plane.

[0057] The structure of the support mechanism is described below:

[0058] Please refer to Figure 6 and Figure 7 , Figure 6 yes Figure 3 A partial cross-sectional schematic diagram of some structures in the lower mold is provided. Figure 7 The support mechanism 300 includes a support rod 310 and a guide structure 320 sleeved on the outside of the support rod 310 .

[0059] The guide structure 320 is installed in the second through hole K2, and the guide structure 320 is movably connected to the support rod 310. The guide structure 320 can guide the support rod 310, improve the stability of the movement of the support rod 310, thereby ensuring the stability of the pressure transmitted to the first blank holder 500, and further improve the stamping effect of the stamping system using the lower mold.

[0060] One end of the support rod 310 abuts against the end of the second push rod 220, and the end of the support rod 310 away from the second push rod 220 has a first boss 311, and the first boss 311 is located outside the second through hole K2. The support rod 310 can be used to transmit pressure between the second push rod 220 and the first pressure ring 500. By setting the first boss 311, on the one hand, the area of ​​the end of the support rod 310 away from the second push rod 220 can be increased, thereby reducing the risk of misalignment between the support rod 310 and the first pressure ring 500, and further ensuring that the pressure provided by the driving mechanism 200 can act on the first pressure ring 500. On the other hand, the first boss 311 protrudes from the guide structure 320, and the first boss 311 can also ensure that the support rod 310 will not be separated from the lower mold base 100 when in the retracted state. Here, the retracted state is also the non-working state of the support mechanism 300.

[0061] Optionally, the second bearing area Q2 further has an avoidance hole K3, which is connected to the end of the second through hole K2 away from the second push rod 220. Here, the diameter of the avoidance hole K3 can be larger than the diameter of the second through hole K2 to ensure that the support rod 310 can move along the axial direction of the support rod 310.

[0062] Wherein, when the support mechanism 300 is in the retracted state, at least part of the first boss 311 is located in the avoidance hole K3. In this way, the avoidance hole K3 can be used to accommodate the first boss 311 in the support mechanism 300. Exemplarily, when the support mechanism 300 is in the retracted state, the first boss 311 is located in the avoidance hole K3, that is, the upper end surface of the first boss 311 away from the guide structure 320 is lower than the bearing surface of the lower mold base 100, so that the avoidance hole K3 can make the support mechanism 300 avoid other components in the lower mold when it is in the retracted state.

[0063] In an exemplary embodiment, the retracted state of the support mechanism can refer to Figure 8 , Figure 8 yes Figure 3 A partial cross-sectional schematic diagram of a support mechanism of a lower mold is provided in a retracted state, and the lower mold 000 also includes: a first main mold core 400 and a first pressure ring 500. Since at least a portion of the first boss 311 is located in the avoidance hole K3, the support mechanism 300 can avoid the first main mold core 400 and the first pressure ring 500, ensuring that the first main mold core 400 and the first pressure ring 500 can be assembled on the bearing surface of the lower mold base 100, and will not affect the disassembly of the first main mold core 400 and the first pressure ring 500.

[0064] In the embodiment of the present application, the support mechanism also has a working state, please refer to Fig. 9 , Fig. 9 yes Figure 3 A partial cross-sectional schematic diagram of a support mechanism of a lower mold in a working state is provided, in which the second push rod 220 moves toward a direction close to the support mechanism 300, and under the guidance of the guide structure 320, the support rod 310 is lifted by the second push rod 220, so that the support rod 310 can apply a force to the first pressure ring 500 and make the first pressure ring 500 move upward.

[0065] Optionally, the support mechanism 300 further includes: a cushion block 330 connected to one end of the support rod 310 facing the second push rod 220, the side of the cushion block 330 facing away from the support rod 310 abuts against the end of the second push rod 220, and the cushion block 330 is located outside the second through hole K2. Here, the area of ​​the end of the cushion block 330 abutting against the second push rod 220 is larger than the area of ​​the end of the support rod 310 facing the cushion block 330, that is, the cushion block 330 can protrude from the support rod 310, so as to ensure that the end of the support rod 310 facing the second push rod 220 will not be separated from the lower mold base 100.

[0066] The hardness of the cushion block 330 is greater than that of the support rod 310. When the second push rod 220 applies pressure, the cushion block 330 can prevent the support rod 310 from directly contacting the second push rod 220. The high hardness of the cushion block 330 can ensure that the risk of damage when working in contact with the second push rod 220 is reduced.

[0067] In addition, the cushion block 330 may have a first connection hole, so that the cushion block 330 can be installed on the lower end of the support rod 310 by passing a screw through the first connection hole. In this way, after the support mechanism 300 has been in contact with the second push rod 220 for a long time, even if the cushion block 330 is damaged, it is easy to disassemble and replace the cushion block 330, thereby improving the service life of the support mechanism 300.

[0068] Optionally, the support mechanism 300 further includes: an annular buffer block 340, which is sleeved on the outside of the support rod 310, and the annular buffer block is located between the first boss 311 and the guide structure 320. The annular buffer block 340 can reduce the impact force when the support rod 310 falls, which can not only play a buffering role and increase the service life, but also reduce noise. Exemplarily, the material of the annular buffer block 340 can include: polyurethane, which has high elasticity and high wear resistance, and can effectively absorb impact force to achieve good buffering performance.

[0069] Optionally, refer to Figure 7 and Fig.10 , Fig.10 yes Figure 7 A side view of a supporting mechanism is provided, wherein the guide structure 320 includes a sleeve 321 and a fixing member 322 fixedly connected to the sleeve 321 .

[0070] The sleeve 321 is located in the second through hole K2, and the sleeve 321 is sleeved on the support rod 310 and is slidably connected to the support rod 310. The axial direction of the sleeve 321 is parallel to the axial direction of the support rod 310. The sleeve 321 can limit the moving direction of the support rod 310 to improve the stability of the force applied by the support mechanism 300 to the first pressure ring 500. Exemplarily, the material of the sleeve 321 can include metallic copper. Graphite can also be used for lubrication between the sleeve 321 and the support rod 310, so as to ensure that the support rod 310 can move along its axial direction during high-frequency production.

[0071] The fixing member 322 is fixedly connected to the lower die base 100. The fixing member 322 can fix the sleeve 321 on the lower die base 100 to improve the stability of the support mechanism 300. In the present application, the fixing member 322 can have a second connection hole, and the lower die base 100 has a corresponding mounting hole at the second through hole K2, so that the guide structure 320 can be mounted on the lower die base 100 by passing a screw through the second connection hole, so that the fixing member 322 can be detachably connected to the lower die base 100, and the support mechanism 300 can be easily replaced. The embodiment of the present application can also increase the strength of the position where the fixing member 322 is installed in the lower die base 100 to ensure the stability of the support mechanism 300 when working at a high frequency, thereby improving the life of the lower mold.

[0072] In an exemplary embodiment, the fixing member 322 may include: at least two fixing plates located on both sides of the sleeve 321 in the radial direction of the support rod 310, and the at least two fixing plates may be symmetrically arranged, thereby improving the stability of the fixing member 322 in fixing the sleeve 321.

[0073] Optionally, refer to Fig.11 , Fig.11 yes Figure 7 Another side view of the support mechanism is provided, in which the side of the support rod 310 has an anti-rotation edge 312, and the fixing member 322 is arranged in contact with the anti-rotation edge 312. The anti-rotation edge 312 can prevent the support rod 310 from rotating relative to the guide mechanism 320 to improve the stability of the support mechanism 300, thereby improving the production stability of the lower mold using the support mechanism 300.

[0074] The following is an explanation of the setting position of the support mechanism:

[0075] In an exemplary embodiment, please refer to Figure 3 and Fig.12 , Fig.12 yes Figure 3 A partial schematic diagram of some structures in the lower mold is provided. The multiple second ejector pins 220 corresponding to the second bearing area Q2 can be spaced around the first bearing area Q1, so that the multiple support mechanisms 300 corresponding to the multiple second ejector pins 220 are also spaced around the first bearing area Q1. In this way, under the joint action of the multiple support mechanisms 300, a relatively stable force can be applied to the first pressure ring 500, so as to ensure that the first pressure ring 500 can be supported, and then the stamping effect of the stamping system using the lower mold 000 can be improved, which can be adapted to high-frequency production.

[0076] In the embodiments of the present application, it is not strictly required that the multiple second top rods 220 correspond one-to-one with the multiple supporting mechanisms 300. For example, the present application can also set a plurality of second top rods 220 between two adjacent supporting mechanisms 300, that is, the multiple supporting mechanisms 300 can also correspond to only a part of the multiple second top rods 220. In this way, the number of supporting mechanisms 300 can be reduced and the cost can be reduced.

[0077] In summary, the embodiment of the present application provides a lower mold, by arranging multiple support mechanisms in the lower mold, the multiple support mechanisms are distributed in the second bearing area of ​​the lower mold base, and the support mechanisms are in contact with the end of the second ejector rod. In this way, in the second bearing area, the support mechanism can cooperate with the second ejector rod to provide pressure to the components in the lower mold. Since the area of ​​the end of the support mechanism away from the second ejector rod is larger than the area of ​​the end of the second ejector rod facing the support mechanism, the support mechanism can avoid the problem of misalignment of the second ejector rod when the size of the lower mold is too large, and ensure that the driving mechanism can apply a force, thereby improving the stamping forming effect of the stamping system using the lower mold.

[0078] On the other hand, an embodiment of the present application provides a stamping system, which includes: an upper die and a lower die provided in any of the above embodiments, the upper die and the lower die are arranged opposite to each other. The stamping system can be a drawing die using various stamping forming technologies. Exemplarily, the stamping system can be a drawing die for producing products such as an engine hood inner panel, an engine hood outer panel, and a four-door outer panel.

[0079] The upper mold may include: an upper mold base, a second main mold core and a second pressure ring. The upper mold base is used to carry the second main mold core and the second pressure ring. The second main mold core is arranged opposite to the first main mold core, and the second main mold core can be used in conjunction with the first main mold core to stamp the blank. One of the first main mold core and the second main mold core can be a convex mold, and the other of the first main mold core and the second main mold core can be a concave mold. The second pressure ring is used to extrude the blank to ensure that the blank can be evenly stressed during the stretching process.

[0080] In summary, the embodiment of the present application provides a stamping system, in which a plurality of support mechanisms are arranged in the stamping system, the plurality of support mechanisms are distributed in the second bearing area of ​​the lower die seat, and the support mechanisms abut against the end of the second ejector rod. In this way, in the second bearing area, the support mechanism can cooperate with the second ejector rod to provide pressure to the lower die. Since the area of ​​the end of the support mechanism away from the second ejector rod is larger than the area of ​​the end of the second ejector rod toward the support mechanism, the support mechanism can avoid the problem of the second ejector rod being misaligned when the size of the lower die is too large, and ensure that pressure can be provided to the lower die, thereby ensuring that the stamping forming effect of the stamping system is better.

[0081] It should be noted that in the accompanying drawings, the sizes of layers and regions may be exaggerated for clarity of illustration. It is also understood that when an element or layer is referred to as being "on" another element or layer, it may be directly on the other element, or there may be an intermediate layer. In addition, it is understood that when an element or layer is referred to as being "under" another element or layer, it may be directly under the other element, or there may be more than one intermediate layer or element. In addition, it is also understood that when a layer or element is referred to as being "between" two layers or two elements, it may be the only layer between the two layers or two elements, or there may also be more than one intermediate layer or element. Similar reference numerals throughout the text indicate similar elements.

[0082] In the present application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless otherwise clearly defined.

[0083] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A lower mold, characterized in that: The lower mold comprises: a lower mold base, a driving mechanism and a plurality of supporting mechanisms; The lower mold base has a first bearing area and a second bearing area, the second bearing area is distributed around the first bearing area, the first bearing area has a plurality of first through holes, and the second bearing area has a plurality of second through holes; The driving mechanism comprises: a plurality of first push rods and a plurality of second push rods, the plurality of first push rods correspond to the plurality of first through holes, and the first push rods can pass through the corresponding first through holes to extend out of the first through holes; The plurality of support mechanisms correspond to the plurality of second through holes and the plurality of second push rods, and the support mechanisms are installed in the corresponding second through holes and abut against the ends of the corresponding second push rods; Wherein, an area of ​​an end of the support mechanism away from the second push rod is larger than an area of ​​an end of the second push rod toward the support mechanism.

2. The lower mold according to claim 1, characterized in that: The support mechanism comprises: a support rod, and a guide structure sleeved on the outside of the support rod; The guide structure is installed in the second through hole, and the guide structure is movably connected to the support rod; one end of the support rod abuts against the end of the second push rod, and the end of the support rod away from the second push rod has a first boss, and the first boss is located outside the second through hole.

3. The lower mold according to claim 2, characterized in that: The second bearing area also has an avoidance hole, and the avoidance hole is connected to an end of the second through hole away from the second push rod; Wherein, when the supporting mechanism is in a retracted state, at least a portion of the first boss is located in the avoidance hole.

4. The lower mold according to claim 2, characterized in that: The support mechanism further includes: a cushion block connected to one end of the support rod facing the second push rod, a side of the cushion block facing away from the support rod abuts against an end of the second push rod, and the cushion block is located outside the second through hole; Wherein, the hardness of the cushion block is greater than the hardness of the support rod.

5. The lower mold according to claim 2, characterized in that: The support mechanism further includes: an annular buffer block, which is sleeved on the outside of the support rod and is located between the first boss and the guide structure.

6. The lower mold according to claim 2, characterized in that: The guide structure comprises: a sleeve, and a fixing member fixedly connected to the sleeve; The sleeve is located in the second through hole, and the sleeve is sleeved on the support rod and is slidably connected to the support rod; the fixing member is fixedly connected to the lower die seat; Wherein, the axial direction of the sleeve is parallel to the axial direction of the support rod.

7. The lower mold according to claim 5, characterized in that: The side surface of the support rod is provided with an anti-rotation edge, and the fixing member is arranged in contact with the anti-rotation edge.

8. The lower mold according to any one of claims 1 to 7, characterized in that: The lower mold also includes: a first main mold core and a first pressure ring, the first main mold core and the first pressure ring are located on the side of the lower mold base away from the driving mechanism, the first main mold core is distributed in the first bearing area, and the first pressure ring is distributed in the second bearing area.

9. The lower mold according to claim 8, characterized in that: One end of the support mechanism away from the second push rod is arranged in contact with the first pressure ring.

10. A stamping system, characterized in that: include: An upper mold and a lower mold as described in any one of claims 1 to 9, wherein the upper mold is arranged opposite to the lower mold.

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