Large-scale drawing common-mode structure capable of reducing material pressing surface and facilitating material flow corner cutting

Abstract

The utility model discloses a large-scale drawing common die structure capable of reducing a material pressing surface and facilitating material flow corner cutting, which relates to the field of stamping dies, and comprises a die part and a corner cutting piece, and the die part comprises a drawing male die and drawing female dies positioned on two sides of the top of the drawing male die; two sides of the drawing male die are provided with outer stripping plates which are used for placing a material to be drawn and receiving the lower pressure of the two drawing female dies, and the outer sides of the two outer stripping plates are respectively provided with a lower die plate; the corner cutting part comprises an upper die cutter and a lower die cutter with opposite cutter edges, the upper die cutter is located at two bottom vertex angles of the sides, away from each other, of the two drawing female dies, the lower die cutter is located at two top vertex angles of the ends, close to the outer stripper plate, of the two lower die plates, and a waste slide way inclining downwards is arranged at the top of each lower die plate. The drawing female die pushes the two sides of the to-be-drawn material to descend and be bent and formed, the upper die cutter and the lower die cutter can generate relative cutting force on the to-be-drawn material at the same time, waste materials at the four corners of the material are cut off, independent blanking and cutting are not needed, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of stamping dies, in particular to a large-scale drawing common die structure which reduces a pressing surface and facilitates material flow and cutting angle. Background Art

[0002] The drawing die is a process equipment that, under the action of a press machine, uses the combined action of the drawing punch, blank holder, drawing die and other components to make the flat blank undergo plastic deformation and obtain a stable spatial shape. In the existing commonly used traditional large-scale drawing die process, some of the materials to be drawn have a large area and many pressing surfaces, resulting in slower flow of the materials to be drawn, and cracks on the surface of the parts will occur during drawing.

[0003] In order to prevent the drawn parts from cracking, it is generally necessary to cut the materials separately before drawing them. First, cut off the excess waste at the four corners of the material to be drawn, and then carry out the subsequent drawing process. However, this method is cumbersome, increases the drawing workload, and reduces work efficiency. At the same time, the cut corner waste is not easy to recycle, resulting in a dirty working environment. Utility Model Content

[0004] The present application provides a large-scale common drawing mold structure that reduces the pressing surface and facilitates the cutting angle of the material flow, which can solve the technical problems in the prior art that the area of ​​some materials to be drawn is large, the flow of the materials to be drawn is slow, and before the drawing work is carried out, a separate material waste cutting process is required, resulting in cumbersome drawing work, increased drawing workload, low drawing efficiency, and at the same time, the cut waste cannot be quickly recovered.

[0005] In a first aspect, the embodiment of the present application provides a large-scale drawing common mold structure that reduces the pressing surface and facilitates the flow of materials, including:

[0006] A die part, the die part comprising a drawing punch and a drawing die located at both sides of the top of the drawing punch, outer stripping plates for placing the material to be drawn and receiving the downward pressure of the two drawing dies are provided on both sides of the drawing punch, and a lower mold plate is provided on the outer sides of the two outer stripping plates;

[0007] A corner cutting piece, the corner cutting piece includes an upper die cutter and a lower die cutter with blades arranged opposite to each other, the upper die cutter is located at the two bottom corners on the side away from each other of the two drawing dies, the lower die cutter is located at the two top corners of the two lower templates close to one end of the outer stripping plate, and a waste slide inclined downward is provided on the top of the lower template.

[0008] In the technical solution of the embodiment of the present application, an upper die cutter is arranged on the drawing die and a lower die cutter is arranged on the lower template, and the downward pressure of the drawing die is utilized to drive the upper die cutter to apply a downward cutting force toward the material to be drawn, and form a relative force with the lower die cutter, so that the waste at the four corners of the material to be drawn can be cut off while drawing, and then the waste can automatically slide out through the waste slide arranged on the lower template, which is convenient and quick to collect.

[0009] In one embodiment, an inner stripper plate is provided between the two drawing dies, and the cross-sectional size of the inner stripper plate is consistent with the cross-sectional size of the drawing punch.

[0010] In one embodiment, the mold part further includes an upper mold base located at the top of the drawing die and a lower mold base located at the bottom of the drawing punch.

[0011] In one embodiment, an upper die spring and a first high-level screw are provided on the top of the inner stripping plate.

[0012] In one embodiment, two ends of the upper die spring are respectively connected to the top of the inner stripping plate and the bottom of the upper die seat.

[0013] In one embodiment, the bottom of the first high-grade screw is connected to the top of the inner stripping plate, and the top of the first high-grade screw passes through the upper mold base.

[0014] In one embodiment, a lower mold spring and a second higher screw are provided at the bottom of the outer stripping plate.

[0015] In one embodiment, two ends of the lower die spring are respectively connected to the bottom of the outer release plate and the top of the lower die base.

[0016] In one embodiment, the top of the second high-grade screw is connected to the bottom of the outer stripping plate, and the bottom of the high-grade screw passes through the lower mold base.

[0017] In one embodiment, the upper die cutter and the lower die cutter are positioned staggered with each other.

[0018] The beneficial effects brought by the technical solution provided in the embodiments of the present application include:

[0019] 1. The large-scale common die structure for drawing in this application, which reduces the pressing surface and facilitates the flow and cutting of the material, can cut the waste area of ​​the material while drawing the material by setting an upper die cutter on the drawing die and a lower die cutter on the lower die plate, without the need for additional material cutting process, thus reducing the work process and greatly improving the drawing efficiency;

[0020] 2. The reduction of the pressing surface in this application is conducive to the flow and cutting of the material. The large-scale drawing common mold structure is provided with a waste slide on the top of the lower mold plate, close to the lower die cutter, so that the cut waste can slide out directly through the waste slide, which is convenient for the unified collection and treatment of the waste in the later stage;

[0021] 3. Reducing the pressing surface in this application is conducive to the flow of materials and the large-scale drawing common mold structure with cutting angles has a simple overall structure, convenient operation process, and is also convenient for later maintenance and replacement of parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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 creative work.

[0023] Figure 1 A schematic diagram of a large-scale drawing common mold structure that reduces the pressing surface and facilitates the flow of materials and cuts the angle provided in an embodiment of the present application;

[0024] Figure 2 A diagram of the outer and inner stripping structures in a large-scale drawing common mold structure that reduces the pressing surface and facilitates material flow and cutting angles provided in an embodiment of the present application;

[0025] Figure 3 This is a schematic diagram of a large-scale drawing common mold structure after the drawing work is completed, which reduces the pressing surface and facilitates the flow of materials and cutting angles provided in an embodiment of the present application.

[0026] In the figure: 1. drawing punch; 2. drawing die; 3. outer stripping plate; 4. lower die plate; 5. upper die cutter; 6. lower die cutter; 7. waste slide; 8. inner stripping plate; 9. upper die seat; 10. lower die seat; 11. upper die spring; 12. first high-level screw; 13. lower die spring; 14. second high-level screw. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0028] The embodiment of the present application provides a large-scale drawing common mold structure that reduces the cutting angle of the pressing surface to facilitate the flow of the material. It can solve the technical problems in the prior art that the area of ​​some materials to be drawn is large, the flow of the materials to be drawn is slow, and before the drawing work is carried out, a separate material waste cutting process is required, which results in cumbersome drawing work, increased drawing workload, low drawing efficiency, and at the same time, the cut waste cannot be quickly recovered.

[0029] Figure 1 A schematic diagram of a large-scale drawing common mold structure for reducing the pressing surface and facilitating the flow of materials is provided in an embodiment of the present application, such as Figure 1 As shown, the large-scale drawing common mold structure for reducing the pressing surface and facilitating the flow and cutting of materials in the present application includes a mold part and a cutting piece. Specifically, the mold part includes a drawing punch 1 and a drawing die 2 located on both sides of the top of the drawing punch 1, and the two sides of the drawing punch 1 are provided with outer stripping plates 3 for placing the material to be stretched and receiving the downward pressure of the two drawing dies 2, and the two outer sides of the two outer stripping plates 3 are respectively provided with a lower mold plate 4; the cutting piece includes an upper die cutter 5 and a lower die cutter 6 with blades opposite to each other, the upper die cutter 5 is located at the two bottom corners of the side away from each other of the two drawing dies 2, the lower die cutter 6 is located at the two top corners of the two lower mold plates 4 close to one end of the outer stripping plate 3, and a waste slide 7 inclined downward is provided on the top of the lower mold plate 4.

[0030] During the drawing work, the drawing punch 1 is located in the middle position of the bottom of the material to be drawn and always remains motionless. After placement, the two ends of the material to be drawn are suspended in the air, and the drawing die 2 is set on both sides above the drawing punch 1 and avoids the position of the drawing punch 1, that is, the drawing die 2 is located above the suspended parts on both sides of the material to be drawn. Subsequently, the drawing die 2 slowly descends, contacts the suspended ends of the material to be drawn and continues to press down. At this time, the middle part of the material to be drawn is supported by the drawing punch 1, and the suspended ends on both sides of the material to be drawn are pressed down by the drawing die 2 to complete the drawing of the part.

[0031] Furthermore, during the drawing process, in order to maintain stable stress on the material to be drawn to reduce deformation, and also to facilitate the rapid removal of the material after drawing, external release plates 3 are provided on both sides of the drawing punch 1. The external release plates 3 are directly opposite to the bottom of the drawing die 2 and are located below the suspended end of the material to be drawn. When the material to be drawn is placed, the material to be drawn spans the drawing punch 1 and the two external release plates 3, and then the drawing die 2 descends, and respectively clamps the upper and lower surfaces of the suspended end of the material to be drawn with the external release plates 3, and drives the suspended end of the material to be drawn to descend together.

[0032] The material to be drawn is generally in the form of a plate, and before the drawing work is carried out, the four corners need to be cut. Here, the four corners of the material to be drawn that need to be cut are called material waste areas. Therefore, in the present application, the number of upper die cutters 5 and lower die cutters 6 is four respectively, and the blades of the four upper die cutters 5 and the four lower die cutters 6 are relatively arranged, wherein the four upper die cutters 5 are respectively arranged at the two top corners of the bottom of the side away from each other of the two drawing dies 2, facing the four top corners of the material, that is, facing the upper surface of the material waste area, and the four lower die cutters 6 are located at the two top corners of the lower template 4 close to the outer stripping plate 3, facing the lower surface of the material waste area.

[0033] As the drawing die 2 continues to descend, the blades of the four upper die cutters 5 begin to contact the upper surface of the material waste area and apply a downward cutting force to the material waste area. Similarly, the four lower die cutters 6 are facing the lower surface of the material waste area and remain motionless during the drawing work. When the drawn material descends, the four lower die cutters 6 generate an upward cutting force on the lower surface of the material waste area. Finally, the waste that has been cut will fall directly on the top of the lower template 4 and slide out along the waste slide 7 set on the upper surface of the lower template 4, which is convenient for the unified collection and arrangement of the cut waste.

[0034] Among them, the materials of the upper die cutter 5 and the lower die cutter 6 need to meet certain conditions such as hardness and corrosion resistance. Existing die cutters generally use stainless steel, high-speed steel, etc., which can be determined according to specific application scenarios and processing requirements. There is no specific restriction in this application.

[0035] In addition, in the embodiment of the present application, the waste chute 7 can be simply a slope with a certain inclination angle set on the upper surface of the lower template 4, or a chute can be added to the inclined slope surface or a smooth material can be laid on the inclined slope surface. There is no specific limitation in the present application. At the same time, for the convenience of description, the single upper die-cutting knife 5 and the single lower die-cutting knife 6 relative to each other in each position are referred to as a group. As an optional embodiment of the waste chute 7, only one waste chute 7 can be set on each lower template 4, and the width of the waste chute 7 covers the two groups of upper die-cutting knives 5 and lower die-cutting knives 6 on this side. Alternatively, two waste chutes 7 can be set on each lower template 4, and each waste chute 7 corresponds to a group of die-cutting knives and lower die-cutting knives 6. The specific setting method and setting quantity are determined according to actual use requirements, and there is no specific limitation in the present application.

[0036] Furthermore, as an optional embodiment, a collection box is provided at the outlet end of each waste chute 7 to facilitate the unified collection and treatment of waste.

[0037] Furthermore, Figure 2 The embodiment of the present application provides a structure diagram of the outer stripping plate 3 and the inner stripping plate 8 in a large-scale drawing common mold structure that reduces the pressing surface and facilitates the flow of the material. Figure 2As shown, an inner stripping plate 8 is arranged between the two drawing dies 2, and the cross-sectional size of the inner stripping plate 8 is consistent with the cross-sectional size of the drawing punch 1. The inner stripping plate 8 moves up and down together with the drawing dies 2 on both sides. During the drawing work, the inner stripping plate 8 descends until it contacts the material to be drawn, and cooperates with the drawing punch 1 to clamp the upper and lower surfaces of the material to be drawn, respectively, to maintain the stability of the material to be drawn during the drawing process, to prevent the displacement of the material to be drawn, and to affect the drawing effect. The inner stripping plate 8 has the same function as the outer stripping plate 3, both of which are to maintain the stable force of the material to be drawn to reduce deformation, and to facilitate the rapid removal of the material after drawing. The inner stripping plate 8 and the outer stripping plate 3 are commonly used components in the stamping field, and will not be described in detail here.

[0038] Furthermore, the mold part also includes an upper mold base 9 located at the top of the drawing die 2 and a lower mold base 10 located at the bottom of the drawing punch 1. In actual use scenarios, the upper mold base 9 is usually made of cast iron, cast steel or aluminum alloy, and is mainly used to connect the template and the top of the mold to ensure the stability and accuracy of the mold. At the same time, the upper mold base 9 is the power end, which is used to drive the drawing die 2 and the inner stripping plate 8 to move up and down, while the lower mold base 10 is the load-bearing component of the overall structure. The material is usually made of high-hardness and high-strength alloy steel. The upper mold base 9 and the lower mold base 10 include various forms. The upper mold base 9 and the lower mold base 10 are commonly used components in the field of stamping technology, and the upper mold base 9 and the lower mold base 10 include multiple other components, which are not particularly related to the technical solution in the present application and will not be described one by one here.

[0039] Furthermore, an upper mold spring 11 and a first high-order screw 12 are provided at the top of the inner stripping plate 8, the two ends of the upper mold spring 11 are respectively connected to the top of the inner stripping plate 8 and the bottom of the upper mold base 9, the bottom of the first high-order screw 12 is connected to the top of the inner stripping plate 8, and the top of the first high-order screw 12 passes through the upper mold base 9.

[0040] Specifically, the two ends of the upper die spring 11 are fixedly connected to the inner stripping plate 8 and the upper die seat 9 respectively, and the top of the first high-order screw 12 passes through the upper die seat 9 and can be longitudinally translated in the upper die seat 9. The upper die spring 11 can ensure the flexibility and automatic return of the longitudinal up and down movement of the inner stripping plate 8, and the first high-order screw 12 can ensure the connection stability of the upper die seat 9 and the inner stripping plate 8, and at the same time can play a traction role in the movement of the inner stripping plate 8. When the upper die seat 9 drives the inner stripping plate 8 to descend, the inner stripping plate 8 will be blocked by the drawing punch 1 and cannot continue to descend. As the upper die seat 9 continues to move downward, at this time, the upper die spring 11 is continuously squeezed, and the first high-order screw 12 also begins to move toward the upper die seat 9. The rod body of the first high-order screw 12 passing through the upper die seat 9 is gradually extended. When the drawing work is completed, the upper die seat 9 rises, and the upper die spring 11 begins to automatically rebound, driving the inner stripping plate 8 and the first high-order screw 12 back to the initial position.

[0041] In one embodiment of the present application, the first high-order screw 12 includes a sleeve portion and a rod body portion, and a compression spring is arranged in the sleeve portion, so that the first high-order screw 12 can perform longitudinal translation in the upper mold base 9 while it itself has a certain amount of expansion and contraction, which can reduce the displacement distance of the first high-order screw 12 in the upper mold base 9 and increase the flexibility and convenience of the first high-order screw 12 itself.

[0042] Furthermore, a lower mold spring 13 and a second higher screw 14 are provided at the bottom of the outer release plate 3, the two ends of the lower mold spring 13 are respectively connected to the bottom of the outer release plate 3 and the top of the lower mold base 10, the top of the second higher screw 14 is connected to the bottom of the outer release plate 3, and the bottom of the second higher screw 14 passes through the lower mold base 10.

[0043] The two outer stripping plates 3 are arranged directly below the drawing die 2, and during the drawing work, they descend along with the drawing die 2. The movement mechanism and return mechanism of the outer stripping plates 3 are the same as those of the inner stripping plates 8. The lower die spring 13 arranged at the bottom of the outer stripping plates 3 can ensure the flexibility of the longitudinal translation and automatic return of the outer stripping plates 3, and the second high-order screw 14 can ensure the connection stability between the lower die base 10 and the outer stripping plates 3. When the outer stripping plates 3 are pressed downward by the drawing die 2, the lower die spring 13 is squeezed, and at the same time, the second high-order screw 14 is displaced toward the lower die base 10. The rod of the second high-order screw 14 passing through the lower die base 10 is gradually extended. When the drawing die 2 rises, the lower die spring 13 automatically pops up and drives the outer stripping plates 3 and the second high-order screw 14 to return to their positions.

[0044] In one embodiment of the present application, the two outer stripping plates 3 can be two independent entities separated from each other, or they can form an integral body. The specific setting form of the outer stripping plates 3 is not specifically limited in the present application, and does not affect the cutting and drawing of the whole. However, it should be noted that when the two outer stripping plates 3 are independent entities separated from each other, at least one lower die spring 13 and at least one second higher screw 14 are set at the bottom of each outer stripping plate 3. When the two outer stripping plates 3 are an integral body, it is only necessary to set the lower die spring 13 at the bottom of one of the outer stripping plates 3 and the second higher screw 14 at the bottom of the other outer stripping plate 3.

[0045] At the same time, the setting form of the second higher screw 14 can also be the same as the setting form of the first higher screw 12, that is, the second higher screw 14 also includes a sleeve portion and a rod body portion, and a compression spring is added inside the sleeve portion so that the second higher screw 14 itself has a certain resilience, so as to reduce the displacement distance of the second higher screw 14 in the lower mold base 10 and increase the flexibility and convenience of the second higher screw 14 itself.

[0046] Furthermore, the positions of the upper die-cutting knife 5 and the lower die-cutting knife 6 are staggered with each other. In order to ensure the normal downward pressing movement of the drawing die 2, the positions of the upper die-cutting knife 5 and the lower die-cutting knife 6 are staggered with each other by a certain distance to avoid the collision between the cutting edges of the upper die-cutting knife 5 and the lower die-cutting knife 6 after they approach each other, and the staggered distance between the upper die-cutting knife 5 and the lower die-cutting knife 6 is less than the thickness of the material to avoid bending of the waste area of ​​the material and resulting in cutting failure.

[0047] Figure 3 A schematic diagram of a large-scale drawing common mold structure with a reduced pressing surface and a cutting angle that is conducive to material flow after the drawing work is completed is provided in an embodiment of the present application. When using the large-scale drawing common mold structure with a reduced pressing surface and a cutting angle that is conducive to material flow in the present application, the material to be drawn is first placed above the drawing punch 1 and the outer stripping plate 3, and then the upper die seat 9 drives the drawing die 2 and the inner stripping plate 8 to be squeezed downward, and the inner stripping plate 8 reaches the drawing punch 1 and clamps the middle part of the material to be drawn, and the drawing die 2 and the outer stripping plate 3 clamp the suspended ends on both sides of the material to be drawn and continue to move downward, and then the four upper die cutters 5 and the four lower die cutters 6 begin to generate relative cutting forces on the upper surface and the lower surface of the material waste area respectively. After the cutting is completed, the cut waste falls on the waste slide 7 and slides out, and the drawing die 2 continues to descend with the suspended end of the moving material to be drawn until the drawing work is completed, and finally the upper die seat 9 drives the drawing die 2 to rise, and the inner stripping plate 8 and the outer stripping plate 3 automatically return to their positions.

[0048] The large-scale drawing common mold structure in the present application reduces the pressing surface and is conducive to the flow and cutting angle of the material. The upper die cutter 5 is arranged on the drawing die 2, and the lower die cutter 6 is arranged on the lower mold plate 4. It can cut the material waste area while drawing the material, without the need for an additional cutting process. The waste chute 7 is arranged on the lower mold plate 4, so that the cut waste can slide out directly through the waste chute 7, which is convenient for unified collection and processing, reduces the work process, and greatly improves the drawing work efficiency.

[0049] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0050] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0051] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A large-scale drawing common mold structure that reduces the pressing surface and facilitates the flow of materials, characterized in that: include: A die section, the die section comprising a drawing punch (1) and a drawing die (2) located on both sides of the top of the drawing punch (1), outer stripping plates (3) for placing the material to be drawn and receiving the downward pressure of the two drawing dies (2) are provided on both sides of the drawing punch (1), and a lower die plate (4) is provided on the outer sides of the two outer stripping plates (3); A corner cutting piece, the corner cutting piece comprises an upper die cutter (5) and a lower die cutter (6) with blades arranged opposite to each other, the upper die cutter (5) is located at two bottom corners of the two drawing dies (2) on a side away from each other, the lower die cutter (6) is located at two top corners of one end of the two lower templates (4) close to the outer stripping plate (3), and a waste slide (7) inclined downward is provided on the top of the lower template (4).

2. A large-scale drawing common mold structure that reduces the pressing surface and facilitates the flow of materials and cutting angles as claimed in claim 1, characterized in that: An inner stripping plate (8) is arranged between the two drawing dies (2), and the cross-sectional size of the inner stripping plate (8) is consistent with the cross-sectional size of the drawing convex die (1).

3. A large-scale drawing common mold structure with reduced pressing surface and favorable cutting angle for material flow as claimed in claim 2, characterized in that: The mold part also includes an upper mold base (9) located at the top of the drawing die (2) and a lower mold base (10) located at the bottom of the drawing punch (1).

4. A large-scale drawing common mold structure with reduced pressing surface and favorable cutting angle for material flow as claimed in claim 3, characterized in that: An upper die spring (11) and a first high screw (12) are provided on the top of the inner stripping plate (8).

5. A large-scale drawing common mold structure with reduced pressing surface and favorable cutting angle for material flow as claimed in claim 4, characterized in that: The two ends of the upper die spring (11) are respectively connected to the top of the inner stripping plate (8) and the bottom of the upper die seat (9).

6. A large-scale drawing common mold structure with reduced pressing surface and favorable cutting angle for material flow as claimed in claim 4, characterized in that: The bottom of the first high-level screw (12) is connected to the top of the inner stripping plate (8), and the top of the first high-level screw (12) passes through the upper mold base (9).

7. A large-scale drawing common mold structure with reduced pressing surface and favorable cutting angle for material flow as claimed in claim 3, characterized in that: A lower mold spring (13) and a second higher screw (14) are arranged at the bottom of the outer stripping plate (3).

8. A large-scale drawing common mold structure with reduced pressing surface and favorable cutting angle for material flow as claimed in claim 7, characterized in that: The two ends of the lower die spring (13) are respectively connected to the bottom of the outer release plate (3) and the top of the lower die seat (10).

9. A large-scale drawing common mold structure with reduced pressing surface and favorable cutting angle for material flow as claimed in claim 8, characterized in that: The top of the second high-grade screw (14) is connected to the bottom of the outer stripping plate (3), and the bottom of the high-grade screw passes through the lower mold base (10).

10. A large-scale drawing common mold structure with reduced pressing surface and favorable cutting angle for material flow as claimed in claim 1, characterized in that: The upper die cutter (5) and the lower die cutter (6) are positioned in an interlaced manner.

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