Deep drawing die with reinforcing ribs

Abstract

This utility model relates to the field of deep drawing forming die technology, and in particular to a deep drawing forming die with a reinforcing rib structure. It includes a die cavity, the top of which has several slots, and hooks installed inside the slots. A forming cavity is formed at the bottom of the die cavity, and a punch is fitted inside the forming cavity. A blank holder is fitted onto the surface of the punch, and an inner groove is formed on the surface of the blank holder. A reinforcing rib is installed inside the inner groove. Several threaded holes are formed at the bottom of the punch, and hexagon socket head cap screws are threaded into the inner holes. A base plate is installed at the bottom of the punch via hexagon socket head cap screws. This device, by adding a reinforcing rib structure to the surface of the blank holder, significantly improves the rigidity and strength of the die, effectively preventing the blank holder from being squeezed and deformed during deep drawing, avoiding side wrinkling during sheet metal forming, and improving the stability and forming quality of the forming process.

Description

Technical Field

[0001] This utility model relates to the field of deep drawing forming die technology, specifically to a deep drawing forming die with a reinforcing rib structure. Background Technology

[0002] Deep drawing die technology is used to stretch and shape sheet metal under pressure through a die, achieving uniform deformation of the metal. In the deep drawing of high-temperature alloy rotating structures, because high-temperature alloys have high strength and hardness, the sheet metal is prone to wrinkling on the sides during the deep drawing process. Deep drawing dies with reinforcing ribs can effectively improve the rigidity and strength of the die, reduce the extrusion deformation of the die during deformation, and thus prevent the sheet metal from wrinkling on the sides during forming, ensuring the stability of the deep drawing process and the forming quality.

[0003] During the design process of this utility model, the following problems were discovered in the existing technology:

[0004] High-temperature alloys have high strength and hardness. In the deep drawing process of high-temperature alloy sheets, common deep drawing dies are difficult to adapt to the deep drawing requirements of high-temperature alloy sheets, which makes the blank holder prone to extrusion deformation. This causes the sheet to wrinkle on the sides during forming, reducing the stability and forming quality of the deep drawing process. Utility Model Content

[0005] The purpose of this invention is to provide a deep drawing die with a reinforcing rib structure to solve the problem mentioned in the background art that it is difficult to adapt to the deep drawing requirements of high-temperature alloy plates, which leads to the easy formation of side wrinkles in high-temperature alloy plates during forming.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a deep drawing die with a reinforcing rib structure, including a die cavity, wherein a plurality of slots are provided at the top of the die cavity surface, and hooks are installed inside the slots;

[0007] The bottom of the die has a forming cavity, the inside of which is fitted a punch. A pressure ring is sleeved on the surface of the punch, and an inner groove is formed on the surface of the pressure ring. A reinforcing rib is installed inside the inner groove.

[0008] The bottom of the punch has several threaded holes, and the internal threads of the threaded holes are connected to hexagon socket screws. The bottom of the punch is fitted with a base plate by the hexagon socket screws.

[0009] The beneficial effects of this utility model are as follows: by adding a reinforcing rib structure to the surface of the blank holder, the rigidity and strength of the mold are greatly improved, which can effectively prevent the blank holder from being squeezed and deformed during the deep drawing process, avoid side wrinkling during the sheet forming process, improve the stability and forming quality of the forming process, and help to better meet the production needs of high temperature alloy sheets.

[0010] To ensure that the sheet metal placed on top of the reinforcing ribs and blank holder is subjected to pressure from the bottom of the die, deep drawing is performed throughout the entire process, while avoiding extrusion deformation of the blank holder during forming.

[0011] Further configuration: the external dimensions of the reinforcing rib are consistent with the external dimensions of the bottom end of the die, and the reinforcing rib is made of nickel-based high-temperature alloy.

[0012] By adopting the above technical solution, the sheet material placed on the reinforcing rib body and the pressure ring can receive a comprehensive and uniform forming effect. In conjunction with the reinforcing rib body made of high-strength nickel-based high-temperature alloy material, the pressure ring is effectively prevented from being squeezed and deformed, thereby eliminating the possibility of side wrinkling of the sheet material during forming.

[0013] To ensure the die can be stably and securely mounted on the upper platform of the four-column hydraulic press in conjunction with the hook:

[0014] Further configuration: hooks are distributed equidistantly in a ring at the top of the die surface.

[0015] By adopting the above technical solution, after the top hook of the die is connected to the hoisting device on the upper platform of the four-column hydraulic press, the gravity can be evenly distributed to ensure that the entire die is stably fixed on the upper platform, thereby achieving more accurate positioning and safe hoisting.

[0016] To ensure that the blank holder is not obstructed by the die and can be smoothly ejected from the top of the die by the ejector pin to reach the predetermined position:

[0017] The further configuration is as follows: a gap is uniformly provided between the inner wall of the pressure ring and the outer surface of the punch, and a gap is also uniformly provided between the top of the punch and the bottom of the die.

[0018] By adopting the above technical solution, the gap between the blank holder and the punch can be used for guidance. Furthermore, the ejector pin can smoothly and steadily drive the blank holder to push out or retract the die. The gap between the punch and the die is uniformly maintained to ensure the stability of the sheet metal forming and avoid excessive deformation or cracks in the sheet metal caused by excessive drawing force.

[0019] To ensure a secure connection between the punch and the base plate that is not prone to loosening due to prolonged molding operations, and to allow the punch, blank holder, and die to withstand high impacts and pressures during molding:

[0020] Further configuration: the internal hexagon screw is made of stainless steel, and the punch, pressure ring and die are all made of ductile iron.

[0021] By adopting the above technical solution, stainless steel internal hexagon screws are used, which have high corrosion resistance and oxidation resistance, ensuring that the connection remains stable for a long time. In addition, the punch, pressure ring and die are all made of ductile iron, which has good mechanical properties and wear resistance, and can withstand greater impact and pressure, effectively improving the service life of the mold.

[0022] To allow multiple ejector pins to pass directly through the punch, the blank holder is ejected from the top of the punch:

[0023] The punch is further configured such that its surface has several through holes.

[0024] By adopting the above technical solution, the ejector pin used on the equipment can pass through the through slot and directly through the punch, thereby ejecting the pressure ring from the top of the punch.

[0025] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0026] Figure 1 This is a front view schematic diagram of the present utility model;

[0027] Figure 2 This is an exploded view of the bottom of the punch of this utility model;

[0028] Figure 3 This is a schematic diagram of the internal explosion of the pressure ring of this utility model.

[0029] In the diagram: 1. Die; 2. Groove; 3. Hook; 4. Forming cavity; 5. Punch; 6. Pressure ring; 7. Inset groove; 8. Reinforcing rib; 9. Threaded hole; 10. Socket head screw; 11. Seat plate. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0031] Please see Figures 1 to 3 A deep drawing die with a reinforcing rib structure includes a die cavity 1, and a number of slots 2 are provided on the top of the surface of the die cavity 1. A hook 3 is installed inside the slot 2.

[0032] The bottom of the die 1 is provided with a forming cavity 4, the inside of the forming cavity 4 is fitted with a punch 5, the surface of the punch 5 is fitted with a pressure ring 6, the surface of the pressure ring 6 is provided with an inner groove 7, and a reinforcing rib 8 is installed inside the inner groove 7.

[0033] The bottom of the punch 5 has several threaded holes 9, and the internal threads of the threaded holes 9 are connected to hexagon socket screws 10. The bottom of the punch 5 is fitted with a base plate 11 by the hexagon socket screws 10.

[0034] In this embodiment, as Figure 2 As shown, the external dimensions of the reinforcing rib 8 are consistent with the external dimensions of the bottom end of the die 1, and the reinforcing rib 8 is made of nickel-based high-temperature alloy.

[0035] In this embodiment, as Figure 2 As shown, hooks 3 are distributed in a ring at equal intervals at the top of the surface of the die 1.

[0036] In this embodiment, as Figure 2 and Figure 3 As shown, a gap is uniformly provided between the inner wall of the pressure ring 6 and the outer surface of the punch 5, and a gap is also uniformly provided between the top of the punch 5 and the bottom of the die 1.

[0037] In this embodiment, as Figure 2 As shown, the internal hex screw 10 is made of stainless steel, while the punch 5, the pressure ring 6, and the die 1 are all made of ductile iron.

[0038] In this embodiment, as Figure 3 As shown, the surface of the punch 5 has several through holes.

[0039] The working process of this deep drawing die with reinforcing ribs is as follows:

[0040] First, the operator fixes the die 1 on the upper platform of the four-column hydraulic press and the punch 5 on the lower platform. Then, the operator raises the ejector rod, which passes through the through hole and through the bottom plate of the punch 5 to push out the blank holder 6 until it reaches the predetermined position. Then, the sheet metal can be placed on the blank holder 6. The die 1 is then pressed down to press the sheet metal onto the blank holder 6. The die 1 continues to press down, moving the sheet metal and the blank holder 6 downwards. Finally, the die 1 and the punch 5 close, realizing the forming of the sheet metal. At the same time, during the forming process, by setting a high-strength reinforcing rib 8 on one side of the blank holder 6, the rigidity and strength of the blank holder 6 are greatly improved, effectively preventing the blank holder 6 from being squeezed and deformed during the deep drawing process, thereby avoiding side wrinkling during the forming process of the sheet metal.

[0041] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0042] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only for the purpose of helping to understand the method and core ideas of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of this utility model, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without modification, should all be considered within the protection scope of this utility model.

Claims

1. A deep drawing die with a reinforcing rib structure, comprising a die cavity (1), characterized in that: The top of the surface of the die (1) is provided with several slots (2), and hooks (3) are installed inside the slots (2); The bottom of the die (1) is provided with a forming cavity (4), and a punch (5) is fitted inside the forming cavity (4). A pressure ring (6) is sleeved on the surface of the punch (5), and an inner groove (7) is provided on the surface of the pressure ring (6). A reinforcing rib (8) is installed inside the inner groove (7). The bottom of the punch (5) is provided with several threaded holes (9), and the internal threads of the threaded holes (9) are connected with hexagon socket screws (10). The bottom of the punch (5) is fitted with a base plate (11) by the hexagon socket screws (10).

2. The deep drawing die with reinforcing ribs as described in claim 1, characterized in that: The external dimensions of the reinforcing rib (8) are consistent with the external dimensions of the bottom end of the die (1), and the reinforcing rib (8) is made of nickel-based high-temperature alloy.

3. The deep drawing die with reinforcing ribs as described in claim 1, characterized in that: The hooks (3) are distributed in a ring at equal intervals at the top of the surface of the die (1).

4. The deep drawing die with reinforcing ribs as described in claim 1, characterized in that: A uniform gap is provided between the inner wall of the pressure ring (6) and the outer surface of the punch (5), and a uniform gap is also provided between the top of the punch (5) and the bottom of the die (1).

5. The deep drawing die with reinforcing ribs as described in claim 1, characterized in that: The internal hex screw (10) is made of stainless steel, and the punch (5), pressure ring (6) and die (1) are all made of ductile iron.

6. The deep drawing die with reinforcing ribs as described in claim 1, characterized in that: The surface of the punch (5) has several through holes.

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