High-temperature titanium alloy deep drawing forming die

Abstract

The utility model relates to a high-temperature titanium alloy drawing forming die applied to the technical field of drawing forming, which comprises a lower die, a bottom plate and an upper die, the bottom plate is provided with the lower die, the lower die is vertically provided with a plurality of ejector rod via holes, the upper die is arranged above the lower die, a blank holder is arranged between the bottom plate and the upper die, and the ejector rod via holes are arranged on the lower die. An inner hole matched with the lower die is formed in the middle of the blank holder, and weight reduction grooves are formed in the blank holder and the upper die; a plurality of spraying pipes facing the inner hole are vertically inserted into the blank holder, the bottoms of the spraying pipes are connected with a liquid conveying mechanism, and the liquid conveying mechanism is used for conveying a boron nitride solution into the spraying pipes, by adopting the structure, a titanium alloy material can be well drawn, the tearing condition is reduced, the quality of a produced product is improved, and the production efficiency is improved. The formed weight reducing groove can reduce the material cost and increase the heating rate, the ejector rod ejects out the product subjected to deep drawing forming through the ejector rod via hole, a boron nitride solution is automatically sprayed to the surface of the material, and the situation that the side wall of the product is broken is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a forming die especially applied to a high temperature titanium alloy deep drawing forming die in the technical field of drawing forming. BACKGROUND

[0002] The drawing forming die is composed of a lower die, an upper die, a pressure ring, a bottom plate and the like, and is usually used for drawing forming of metal materials, and when processing the TA32 new titanium alloy material, the material is formed in the mode of hot creep forming because the TA32 new titanium alloy is difficult to form at normal temperature, and the forming die is processed from the silicon molybdenum nodular cast iron among heat-resistant materials.

[0003] The patent with the publication number CN103480746A discloses a conical workpiece drawing die, which comprises an upper die plate, a material striking disc, a female die, a guide sleeve, a guide column, a pressure ring, a male die, a male die fixing plate and a lower die plate.

[0004] When the material is drawn and formed, the material side wall is easily damaged, which reduces the yield rate, and the boron nitride solution is usually sprayed on the material and the die for protecting the die and the product, and the traditional manual spraying mode is low in efficiency and has safety hazards. SUMMARY

[0005] The utility model provides a high temperature titanium alloy deep drawing forming die, including: lower die, bottom plate and upper die, the bottom plate is installed with lower die, the lower die is vertically provided with a plurality of top rod through hole, the upper die sets up in the upper die, and the bottom plate is provided with pressure ring between the upper die, the middle part of pressure ring is provided with the inner hole matched with lower die, and the pressure ring and the upper die are all provided with the lightening groove.

[0006] To solve the above problems, the utility model provides a high temperature titanium alloy deep drawing forming die, including: lower die, bottom plate and upper die, the bottom plate is installed with lower die, the lower die is vertically provided with a plurality of top rod through hole, the upper die sets up in the upper die, and the bottom plate is provided with pressure ring between the upper die, the middle part of pressure ring is provided with the inner hole matched with lower die, and the pressure ring and the upper die are all provided with the lightening groove.

[0007] The high-temperature titanium alloy deep drawing forming die can better draw titanium alloy materials, reduce tearing and improve the quality of the produced products.

[0008] As a further improvement of the present application, the bottom plate is positioned with the lower die through positioning pins, and the bottom plate is locked with the bottom plate through screws.

[0009] As a further improvement of the present application, the top of the blank holder is provided with a plurality of ribs along the circumference of the inner hole, and a guide gap is arranged between the lower die and the inner wall of the inner hole.

[0010] As a further improvement of the present application, a pin is arranged on the blank holder for positioning the raw material.

[0011] As a further improvement of the present application, the infusion mechanism includes an oil storage chamber mounted on the bottom plate, an injection pipe inserted into the oil storage chamber, an infusion pipe connected to the bottom of the oil storage chamber, a lower end of the spray pipe inserted into an upper end of the injection pipe, a one-way valve one mounted at a bottom end of the injection pipe, and a one-way valve two mounted at an input end of the oil storage chamber.

[0012] As a further improvement of the present application, the bottom of the injection pipe is vertically and slidably connected to the inner cavity of the oil storage chamber through a piston plate, the bottom of the piston plate is provided with a spring two, the inner cavity of the injection pipe is fixed with a limiting block below the spray pipe, and a spring one is arranged between the limiting block and the bottom of the spray pipe.

[0013] As a further improvement of the present application, an auxiliary rod vertically inserted into the blank holder is arranged on one side of each spray pipe, the bottom end of the auxiliary rod is fixed with the spray pipe, and the top end of the auxiliary rod is higher than the top end of the spray pipe.

[0014] As a further improvement of the present application, a spray ball head is embedded in the top output end of the spray pipe, and a spray hole is arranged on the spray ball head and communicated with the inner cavity of the spray pipe.

[0015] In summary, when in use, the mold is heated by the thermal creep forming equipment, which can better draw titanium alloy materials, reduce tearing and improve the quality of the produced products. The weight-reducing grooves can reduce material costs and increase the heating rate. The product after deep drawing is ejected by the top rod through the top rod via hole. When the upper die is pressed downward to the blank holder, the bottom of the upper die will gradually press the top of the spray pipe, and the boron nitride solution in the spray pipe will be gradually sprayed to the surface of the titanium alloy material. Thus, the boron nitride solution is automatically sprayed to the material surface during the pressing process of the upper die, which reduces the breaking of the product sidewall and improves the product quality. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic view of the overall structure of the first and second embodiments of the present application.

[0017] Figure 2 For the first and second embodiments of the present application Figure 1 Enlarged view of A in the present application

[0018] Figure 3 Schematic view of the mold after closing for the first and second embodiments of the present application

[0019] Figure 4 Schematic view of the infusion mechanism for the first and second embodiments of the present application

[0020] Figure 5 Cross-sectional view of the infusion mechanism for the first and second embodiments of the present application

[0021] Explanation of the reference numerals in the drawings:

[0022] 1, lower mold; 2, base plate; 3, edge ring; 4, upper mold; 5, inner hole; 6, ejector pin through hole; 7, weight reduction groove; 8, rib; 9, spray pipe; 10, auxiliary rod; 11, injection pipe; 12, oil storage chamber; 13, limit block; 14, spring one; 15, spray ball head; 16, one-way valve one; 17, spring two; 18, one-way valve two. DETAILED DESCRIPTION

[0023] The two embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0024] First embodiment:

[0025] Figures 1-3The utility model discloses a high temperature titanium alloy deep drawing forming die, including lower die 1, bottom plate 2 and upper die 4, bottom plate 2 is installed on the lower die 1, vertical and is set up with a plurality of ejector pin through hole 6 on the lower die 1, upper die 4 is set up above the lower die 1, and the bottom plate 2 and upper die 4 are provided with the blank holder 3, the middle part of blank holder 3 is provided with the inner hole 5 matched with lower die 1, and the blank holder 3 and upper die 4 are all provided with the lightening groove 7, when using, the mould is heated through the thermal creep forming equipment, can better draw the titanium alloy material, reduces the tearing condition, improves the quality of the product produced, places the titanium alloy material on the blank holder 3, and the material is drawn forming through the upper die 4 down pressure, and the lightening groove 7 set up can reduce the material cost and increase the heating rate, and the ejector rod is ejected to the product after deep drawing forming through the ejector rod through hole 6, a plurality of spray pipes 9 towards the inner hole 5 are vertically inserted on the blank holder 3, the bottom of spray pipe 9 is connected with liquid delivery mechanism, is used to deliver boron nitride solution into spray pipe 9, when the upper die 4 is pressed down to blank holder 3, the bottom of upper die 4 will gradually press down the top of spray pipe 9, and boron nitride solution in spray pipe 9 is gradually sprayed to the surface of titanium alloy material, so as to automatically spray boron nitride solution to the material surface in the processing process by the pressing process of upper die 4, reduce the product sidewall rupture condition, improve product quality.

[0026] In the embodiment, the bottom plate 2 is positioned with the lower die 1 through the positioning pin, and the bottom plate 2 is locked with the bottom plate 2 through the screw, so as to accurately and quickly position the lower die 1 and the bottom plate 2, improve the convenience of installation, and facilitate subsequent maintenance operation, and the top of the blank holder 3 is provided with a plurality of rib strips 8 along the circumference of the inner hole 5, which can prevent material wrinkling during material forming, and a guide gap is arranged between the lower die 1 and the inner wall of the inner hole 5, which facilitates material forming.

[0027] In addition, the blank holder 3 is provided with a pin for positioning the raw material, improving the uniformity of the product deep drawing thickness and improving the product quality.

[0028] Second embodiment:

[0029] Figures 1-5The shown high-temperature titanium alloy deep drawing forming die is different from the first embodiment in that the solution feeding mechanism comprises an oil storage chamber 12 mounted on the bottom plate 2, an injection pipe 11 inserted with the oil storage chamber 12, an outer joint of the bottom of the oil storage chamber 12 with a solution feeding pipe, the lower end of the spraying pipe 9 inserted with the upper end of the injection pipe 11, the bottom end of the injection pipe 11 mounted with a one-way valve 16, and the input end of the oil storage chamber 12 mounted with a one-way valve 18. During the pressing process of the upper die 4, the spraying pipe 9 is pressed down and gradually inserted into the inner cavity of the injection pipe 11. Since the bottom of the injection pipe 11 is provided with the one-way valve 16, the solution can only flow from the inner cavity of the oil storage chamber 12 to the inner cavity of the injection pipe 11. Therefore, the pressing down of the spraying pipe 9 extrudes the liquid in the inner cavity of the injection pipe 11 and sprays it to the die through the top of the spraying pipe 9 to lubricate the die and realize the solution spraying purpose. At the same time, during the insertion of the bottom of the injection pipe 11 into the inner cavity of the oil storage chamber 12, since the one-way valve 18 is provided, the solution can only flow from the feeding pipe into the inner cavity of the oil storage chamber 12. Therefore, the pressing down of the injection pipe 11 extrudes the liquid in the inner cavity of the oil storage chamber 12 into the injection pipe 11 to further supplement the solution in the inner cavity of the injection pipe 11. When the upper die 4 is moved up and reset, the solution of the feeding pipe will enter the oil storage chamber 12 again to supplement the solution in the inner cavity of the oil storage chamber 12 for the next cycle of spraying.

[0030] It is worth mentioning that, please refer to Figure 4 and Figure 5 The bottom of the injection pipe 11 is vertically and slidably connected with the inner cavity of the oil storage chamber 12 through a piston plate, the bottom of the piston plate is mounted with a spring 17, the inner cavity of the injection pipe 11 is fixed below the spraying pipe 9 with a limiting block 13, and the spring 14 is mounted between the limiting block 13 and the bottom of the spraying pipe 9. When the upper die 4 is moved up and reset, the spring 14 pushes the spraying pipe 9 to reset, and the spring 17 pushes the one-way valve 16 to reset, which is convenient for the next pressing and spraying operation.

[0031] In addition, one side of each spraying pipe 9 is provided with an auxiliary rod 10 vertically inserted with the blank holder 3, the bottom end of the auxiliary rod 10 is fixed with the spraying pipe 9, and the top end of the auxiliary rod 10 is higher than the top end of the spraying pipe 9. During the pressing process of the upper die 4, the top of the auxiliary rod 10 is contacted to press down the auxiliary rod 10 and synchronously drive the spraying pipe 9 to move down, which protects the spraying pipe 9 to some extent, reduces the damage to the spraying pipe 9 during multiple uses, and increases the service life of the spraying pipe 9. The top output end of the spraying pipe 9 is embedded with a spraying ball head 15, the spraying ball head 15 is provided with spraying holes communicated with the inner cavity of the spraying pipe 9, the solution sprayed out of the spraying pipe 9 is sprayed out through the spraying holes on the spraying ball head 15, and the direction of the spraying holes on the spraying ball head 15 can be adjusted to adjust the spraying direction.

[0032] The above-mentioned embodiments of the present application are combined with the current actual demand, and the protection scope is not limited thereto, various changes made within the knowledge of those skilled in the art without departing from the concept of the present application still fall within the protection scope of the present application.

Claims

1. A high-temperature titanium alloy deep drawing die, characterized in that, include: The lower mold (1), the base plate (2), and the upper mold (4) are provided. The lower mold (1) is mounted on the base plate (2). The lower mold (1) has multiple vertically opened through holes (6) for push rods. The upper mold (4) is located above the lower mold (1). A pressure ring (3) is provided between the base plate (2) and the upper mold (4). The middle part of the pressure ring (3) has an inner hole (5) that matches the lower mold (1). The pressure ring (3) and the upper mold (4) both have weight reduction grooves (7). Multiple spray pipes (9) facing the inner hole (5) are vertically inserted into the pressure ring (3). The bottom of the spray pipe (9) is connected to a liquid delivery mechanism for delivering boron nitride solution into the spray pipe (9).

2. The high-temperature titanium alloy deep drawing die according to claim 1, characterized in that: The base plate (2) is positioned with the lower mold (1) by a positioning pin, and the base plate (2) is locked with the base plate (2) by screws.

3. The high-temperature titanium alloy deep drawing die according to claim 1, characterized in that: The top of the pressure ring (3) is provided with multiple ribs (8) along the circumference of the inner hole (5), and a guide gap is provided between the lower mold (1) and the inner wall of the inner hole (5).

4. The high-temperature titanium alloy deep drawing die according to claim 1, characterized in that: The pressure ring (3) is provided with a pin for positioning the raw material.

5. The high-temperature titanium alloy deep drawing die according to claim 1, characterized in that: The infusion mechanism includes an oil storage chamber (12) installed on the base plate (2) and an injection pipe (11) inserted into the oil storage chamber (12). An infusion pipe is connected to the bottom of the oil storage chamber (12). The lower end of the spray pipe (9) is inserted into the upper end of the injection pipe (11). A one-way valve (16) is installed at the bottom of the injection pipe (11). A one-way valve (18) is installed at the input end of the oil storage chamber (12).

6. The high-temperature titanium alloy deep drawing die according to claim 5, characterized in that: The bottom of the injection pipe (11) is vertically slidably connected to the inner cavity of the oil storage chamber (12) through a piston plate. A second spring (17) is installed at the bottom of the piston plate. A limit block (13) is fixed below the spray pipe (9) in the inner cavity of the injection pipe (11). A first spring (14) is installed between the limit block (13) and the bottom of the spray pipe (9).

7. A high-temperature titanium alloy deep drawing die according to claim 6, characterized in that: Each of the spray pipes (9) is provided with an auxiliary rod (10) that is vertically inserted into the pressure ring (3) on one side. The bottom end of the auxiliary rod (10) is fixed to the spray pipe (9), and the top end of the auxiliary rod (10) is higher than the top end of the spray pipe (9).

8. A high-temperature titanium alloy deep drawing die according to claim 7, characterized in that: The top output end of the spray pipe (9) is embedded with a spray ball head (15), and the spray ball head (15) has a spray hole that communicates with the inner cavity of the spray pipe (9).

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