Spherical deep drawing and trimming integrated forming structure

Abstract

The utility model discloses a spherical deep drawing and trimming integrated forming structure which comprises a lower die base and an upper die base, a male die fixing plate is installed on the upper surface of the lower die base, a male die is installed in the middle of the male die fixing plate, and floating ejector plates are connected to the two sides of the upper surface of the male die fixing plate in a sliding mode. An upper base plate is installed on the lower surface of the upper die base, an ejector rod is connected to the upper die base and the upper base plate in a sliding mode, and an ejector rod spring is installed between the top end of the ejector rod and the upper die base. In the spherical deep drawing die structure, the material blocking ribs are additionally arranged, so that the flowing of materials can be effectively controlled, and the stability of the materials is enhanced. The end of the ejector rod is matched with the top of the male die so that the contact area of the blank and the male die can be increased. The original two working procedures of deep drawing and trimming are combined into one set of die. And meanwhile, a material blocking rib, an ejector rod and the like are designed in the mold, the forming quality of spheres is improved, the forming precision is high, consistency is good, cost is low, and efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of automotive parts, and specifically relates to a spherical drawing and trimming integrated forming structure. Background Technique

[0002] As a kind of automotive parts, spherical drawn parts have wide applications and play a quite important role in automotive parts. In the production of automotive parts, the drawing process occupies a quite important position because complex-shaped parts such as automotive body parts can be manufactured through the drawing process. These parts play a key role in the structure and function of the vehicle.

[0003] In addition, the drawing process can also be used in combination with other stamping forming processes such as flanging, bulging, flaring, necking, etc. to further manufacture parts with extremely complex shapes. The flexibility and adaptability of this process make it one of the commonly used technologies in automotive parts manufacturing.

[0004] There are certain drawbacks in the current actual application process;

[0005] 1. In the spherical drawing process, there is no design of a blank stop rib, resulting in unstable material drawing flow during the drawing process.

[0006] 2. Due to unreasonable structural designs such as blank holding and blanking, when the blanking ejector rod ejects the sphere, a point contact is formed between the blanking ejector rod and the vertex of the sphere. The force on the spherical top is concentrated, and the pressure is too high. At the same time, the wall thickness of the sphere is relatively thin, so a depression will be formed on the spherical top, affecting the forming quality of the product and the subsequent trimming process.

[0007] 3. The spherical drawing process and the trimming process are completed separately, resulting in low efficiency and poor product consistency.

[0008] Therefore, a spherical drawing and trimming integrated forming structure is proposed. Summary of the Invention

[0009] The purpose of the utility model is to provide a spherical drawing and trimming integrated forming structure to solve the problems raised in the above background technique.

[0010] To achieve the above purpose, the utility model provides the following technical solution: A spherical drawing and trimming integrated forming structure, including a lower die base and an upper die base. A punch fixing plate is installed on the upper surface of the lower die base, a punch is installed in the middle of the punch fixing plate, and floating ejector plates are slidably connected to both sides of the upper surface of the punch fixing plate;

[0011] An upper backing plate is installed on the lower surface of the upper die base, a push rod is slidably connected to the upper die base and the upper backing plate, and a push rod spring is installed between the top end of the push rod and the upper die base;

[0012] The lower surface of the upper backing plate is provided with a die holder, the middle of the die holder is provided with a blanking die, the blanking die is sleeved outside the ejector rod, and the lower surface of the die holder is slidably connected with a floating pressure plate.

[0013] Preferably: a material blocking rib is installed on the upper surface of the floating ejector plate, and a groove adapted to the material blocking rib is provided on the lower surface of the floating pressure plate.

[0014] Preferably: a lower guide post is slidably connected to the lower die base, and the top end of the lower guide post penetrates through the punch holder and is connected to the floating ejector plate.

[0015] Preferably: a lower die spring is installed outside the lower guide post, and the lower die spring is connected to the lower surface of the floating ejector plate.

[0016] Preferably: an upper guide post is slidably connected to the upper die base, and the bottom end of the upper guide post sequentially penetrates through the upper backing plate and the die holder and is connected to the floating pressure plate.

[0017] Preferably: an upper die spring is installed between the floating pressure plate and the die holder, and the upper die spring is sleeved outside the upper guide post.

[0018] Preferably: an outer guide post is installed between the upper die base and the lower die base, and a die shank is installed on the upper surface of the upper die base.

[0019] Preferably: the end of the ejector rod is adapted to the arc surface at the top of the punch.

[0020] Preferably: the outer edge of the blanking die is a punching edge, and the inner edge is a rounded corner transition with a curvature.

[0021] Compared with the prior art, the beneficial effects of the present utility model are as follows: in the spherical drawing die structure, a new material blocking rib is added, which can effectively control the flow of materials and enhance the stability of materials. The end of the ejector rod is adapted to the top of the punch to increase the contact area between the blank and the punch. The original two processes of drawing and trimming are combined into one set of dies. At the same time, the die is designed with a material blocking rib, an ejector rod, etc., which improves the forming quality of the sphere, has high forming accuracy, good consistency, low cost and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a state diagram of the present utility model when just contacting the blank;

[0023] Figure 2 It is a state diagram of the present utility model when blanking the blank;

[0024] Figure 3 It is a state diagram of the present utility model when the drawing is completed;

[0025] Figure 4This is the state diagram when the ejector rod of the present utility model ejects parts.

[0026] In the figure: 1, blank; 2, lower die base; 3, punch fixing plate; 4, punch; 5, floating ejector plate; 6, stock stop rib; 7, ejector rod; 8, blanking die; 9, die fixing plate; 10, upper backing plate; 11, upper die base; 12, die shank; 13, upper die spring; 14, outer guide pillar; 15, lower die spring; 16, ejector rod spring; 17, floating pressure plate; 18, upper guide pillar; 19, lower guide pillar. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0028] Please refer to Figures 1-4 , the present utility model provides a technical solution: a spherical deep drawing and trimming integrated forming structure, including a lower die base 2 and an upper die base 11. The upper surface of the lower die base 2 is provided with a punch fixing plate 3. The middle of the punch fixing plate 3 is provided with a punch 4. The two sides of the upper surface of the punch fixing plate 3 are slidably connected with a floating ejector plate 5;

[0029] The lower surface of the upper die base 11 is provided with an upper backing plate 10. The upper die base 11 and the upper backing plate 10 are slidably connected with an ejector rod 7. An ejector rod spring 16 is installed between the top end of the ejector rod 7 and the upper die base 11;

[0030] The lower surface of the upper backing plate 10 is provided with a die fixing plate 9. The middle of the die fixing plate 9 is provided with a blanking die 8. The blanking die 8 is sleeved outside the ejector rod 7. The lower surface of the die fixing plate 9 is slidably connected with a floating pressure plate 17.

[0031] As Figure 1 and Figure 2 shown: The upper surface of the floating ejector plate 5 is provided with a stock stop rib 6. The lower surface of the floating pressure plate 17 is provided with a groove adapted to the stock stop rib 6; Through the above settings, during the process of the floating pressure plate 17 and the floating ejector plate 5 fitting together, the stock stop rib 6 can clamp and limit the blank 1 through the groove, avoiding the situation of the blank 1 shifting in position, effectively controlling the position of the material, and enhancing the overall stability.

[0032] As Figure 1 and Figure 4 shown: The lower die base 2 is slidably connected with a lower guide pillar 19. The top end of the lower guide pillar 19 passes through the punch fixing plate 3 and is connected to the floating ejector plate 5; Through the above settings, the floating ejector plate 5 can move up and down during use through the lower guide pillar 19, facilitating the processing work.

[0033] As Figure 1 and Figure 4As shown in the figure: A lower die spring 15 is installed outside the lower guide post 19, and the lower die spring 15 is connected to the lower surface of the floating ejector plate 5; through the above settings, the lower die spring 15 can restore the floating ejector plate 5 to its original position after processing, facilitating the next use.

[0034] As Figure 1 and Figure 4 shown in the figure: An upper guide post 18 is slidably connected to the upper die base 11, and the bottom end of the upper guide post 18 sequentially penetrates through the upper backing plate 10 and the die holder fixing plate 9 and is connected to the floating pressure plate 17; through the above settings, similarly, the upper guide post 18 can move the floating pressure plate 17 up and down during processing.

[0035] As Figure 1 and Figure 4 shown in the figure: An upper die spring 13 is installed between the floating pressure plate 17 and the die holder fixing plate 9, and the upper die spring 13 is sleeved outside the upper guide post 18; through the above settings, the upper die spring 13 can also restore the floating pressure plate 17 to its original position after processing, facilitating the next use.

[0036] As Figure 1 and Figure 4 shown in the figure: An outer guide post 14 is installed between the upper die base 11 and the lower die base 2, and a die shank 12 is installed on the upper surface of the upper die base 11; through the above settings, the outer guide post 14 can limit the position between the upper die base 11 and the lower die base 2, facilitating the processing work.

[0037] As Figure 2 and Figure 3 shown in the figure: The end of the ejector rod 7 is adapted to the arc surface at the top of the punch 4; through the above settings, the contact area between the blank 1, the punch 4 and the ejector rod 7 can be increased.

[0038] As Figure 2 and Figure 3 shown in the figure: The outer edge of the blanking die 8 is a punching edge, and the inner edge is a rounded corner transition with a curvature; through the above settings, the blanking process can be performed on the blank 1.

[0039] Working principle: As Figure 1 shown in the figure, before the floating pressure plate 17 presses the blank 1 against the floating ejector plate 5, the ejector rod 7 pre-presses the blank 1 by a certain depth to achieve a certain material reserve.

[0040] As Figure 2 shown in the figure, the floating pressure plate 17 and the floating ejector plate 5 jointly act to press the blank 1 between the stock stop ribs 6. Thereafter, the blank 1 is spherically formed under the action of the punch 4 and the ejector rod 7. As the punch press slider continues to descend, the blanking die 8 and the floating ejector plate 5 jointly perform the punching process.

[0041] As Figure 3As shown, the upper die holder 11 continues to descend, and the blank 1 enters the gap between the punch and die through the arc at the inner edge of the blanking female die 8 and is drawn and formed.

[0042] As Figure 4 As shown, the upper die holder 11 ascends, and the floating pressure plate 17 and the floating ejector plate 5 are disengaged from contact. Since the formed part is extruded into the cavity of the blanking female die 8, it ascends accordingly. Subsequently, as the ejector spring 16 applied to the ejector rod 7 rebounds, the part is ejected. Through the above several stages, a cycle of the drawing and trimming forming process is completed.

[0043] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spherical drawing and trimming integrated forming structure, comprising a lower die base (2) and an upper die base (11), characterized in that: The upper surface of the lower die base (2) is provided with a punch fixing plate (3). The middle part of the punch fixing plate (3) is provided with a punch (4). The two sides of the upper surface of the punch fixing plate (3) are slidably connected with a floating ejector plate (5). The lower surface of the upper die base (11) is provided with an upper backing plate (10). A ejector rod (7) is slidably connected between the upper die base (11) and the upper backing plate (10). A ejector rod spring (16) is installed between the top end of the ejector rod (7) and the upper die base (11). The lower surface of the upper backing plate (10) is provided with a die fixing plate (9). The middle part of the die fixing plate (9) is provided with a blanking die (8). The blanking die (8) is sleeved outside the ejector rod (7). The lower surface of the die fixing plate (9) is slidably connected with a floating pressure plate (17).

2. The one-piece spherical drawing and trimming forming structure according to claim 1, wherein: The upper surface of the floating ejector plate (5) is provided with a stock stop rib (6). The lower surface of the floating pressure plate (17) is provided with a groove adapted to the stock stop rib (6).

3. A spherical drawing and trimming integrated forming structure according to claim 1, characterized in that: A lower guide post (19) is slidably connected to the lower die base (2). The top end of the lower guide post (19) penetrates through the punch fixing plate (3) and is connected to the floating ejector plate (5).

4. The one-piece forming structure of spherical drawing and cutting edge according to claim 3, characterized in that: A lower die spring (15) is installed outside the lower guide post (19). The lower die spring (15) is connected to the lower surface of the floating ejector plate (5).

5. A spherical drawing and trimming integrated forming structure according to claim 1, characterized in that: An upper guide post (18) is slidably connected to the upper die base (11). The bottom end of the upper guide post (18) sequentially penetrates through the upper backing plate (10) and the die fixing plate (9) and is connected to the floating pressure plate (17).

6. The one-piece forming structure of spherical drawing and trimming according to claim 5, characterized in that: An upper die spring (13) is installed between the floating pressure plate (17) and the die fixing plate (9). The upper die spring (13) is sleeved outside the upper guide post (18).

7. The one-piece forming structure of spherical drawing and trimming according to claim 1, wherein: An outer guide post (14) is installed between the upper die base (11) and the lower die base (2). A die shank (12) is installed on the upper surface of the upper die base (11).

8. A spherical drawing and trimming integrated forming structure according to claim 1, characterized in that: The end of the ejector rod (7) is adapted to the arc surface at the top of the punch (4).

9. The one-piece spherical drawing and trimming forming structure according to claim 1, wherein: The outer edge of the blanking die (8) is a punching edge, and the inner edge is a rounded corner transition with a radian.

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