Titanium alloy powder cold isostatic pressing mold charging device

Abstract

The utility model discloses a titanium alloy powder cold isostatic pressing mould charging device, including the upper and lower intercommunication's material tank and vacuum box. The material tank is connected with the vacuum box feed port through the discharge port of taking the valve, and vacuum system, glove port and observation window are equipped for the vacuum box, and the vibration dish, rotatory disc and weighing device are established at the bottom of the box, and the cold isostatic pressing mould is placed on it. The device prevents titanium powder oxidation through the vacuum environment, and the vibration uniform material is combined with the rotation material distribution and improves the uniformity of charging, and the weighing device realizes accurate control, and the quality of cold isostatic pressing blank is improved obviously.

Description

Technical Field

[0001] This utility model relates to the field of metal powder forming technology, specifically to a loading device for a cold isostatic pressing mold for titanium alloy powder. Background Technology

[0002] Titanium alloy powder, due to its high specific strength and corrosion resistance, is widely used in aerospace, medical implants, and other fields. Cold isostatic pressing (CIP) technology can prepare high-density preforms through uniform pressure. Titanium alloy powder needs to be loaded into an elastic mold before CIP forming. However, the loading process presents the following problems: 1. Oxidation pollution problem: Titanium alloy powder has a large specific surface area, and when exposed to air, it will quickly adsorb oxygen and nitrogen (>500ppm will cause the billet to become brittle), resulting in a decline in product performance; 2. Poor uniformity of material loading: Manual loading is prone to powder agglomeration or uneven density, which can lead to cracks or deformation in the pressed blank. 3. Traditional loading is mostly carried out in open environments, which are prone to oxidation, and the powder is easily scattered and polluted. The working environment for workers is poor, and the dust is easily inhaled into the lungs, increasing the risk of occupational diseases. Utility Model Content

[0003] The purpose of this invention is to overcome the defects in the existing technology and provide a loading device for a cold isostatic pressing mold for titanium alloy powder.

[0004] To achieve the above objectives, the technical solution of this utility model is to design a material loading device for a titanium alloy powder cold isostatic pressing mold, including a material tank and a vacuum chamber. The material tank is located above the vacuum chamber, and a discharge port is provided at the lower end of the material tank. A discharge valve is provided at the discharge port. The vacuum chamber is connected to the discharge port. A feed port is provided at the top of the vacuum chamber, and the discharge port is connected to the feed port. A feed valve is provided at the feed port. The vacuum chamber includes a chamber body and a door. An air inlet is provided on the chamber body and / or at the connection between the discharge port and the vacuum chamber. An air inlet valve is provided at the air inlet. A vacuum interface is provided on the chamber body, and an air extraction valve is provided at the vacuum interface. One side of the door is hinged to the chamber body, and the other side of the door is movably connected to the chamber body through a locking member. At least one side of the chamber body has a glove opening and an observation window. The cold isostatic pressing mold is placed at the bottom of the chamber body.

[0005] Furthermore, a vibratory feeder is provided at the bottom of the housing, and the cold isostatic pressing mold is placed on the vibratory feeder. When filling the cold isostatic pressing mold with titanium alloy powder, the vibratory feeder can eliminate the pores in the titanium alloy powder through vibration, thereby improving the compactness of the filling.

[0006] Furthermore, a rotating disk is provided at the bottom of the housing or on the vibratory feeder, and the cold isostatic pressing mold is placed on the rotating disk. Multiple cold isostatic pressing molds may be placed on the same loading tray. When the loading tray is large, and the operator cannot reach the distant cold isostatic pressing molds through a set of glove openings, the rotating disk can be rotated to bring the distant cold isostatic pressing molds closer, so as to realize the filling of titanium alloy powder. Thus, after one gas replacement, multiple sets of molds can be filled, which greatly improves the filling efficiency.

[0007] Furthermore, a weighing device is provided at the bottom of the housing, and the vibratory plate or rotating plate is placed on the weighing device. The weighing device is preferably a digital display scale, capable of monitoring the weight of the titanium alloy powder filling in real time.

[0008] Furthermore, the enclosure is equipped with a recirculating exhaust port and a recirculating air inlet, which are connected by a pipe. In the inert atmosphere environment inside the enclosure, an external circulating purification device continuously circulates and purifies the protective gas, removing any trace amounts of oxygen and water vapor that may accumulate, maintaining the high purity of the atmosphere inside the enclosure for a long period, and reducing the consumption of inert gas.

[0009] Furthermore, the chamber is equipped with a deoxygenation device. After gas replacement is completed, trace amounts of oxygen in the vacuum chamber can be adsorbed by the deoxygenation device, thereby further reducing the oxygen content in the vacuum chamber.

[0010] Furthermore, a pressure gauge is installed on the enclosure. The pressure gauge monitors the pressure status of the enclosure in real time.

[0011] Preferably, a funnel is provided at the connection between the discharge port and the inlet. The funnel guides the powder to fall in a specific direction, reducing scattering.

[0012] Furthermore, a support tray is provided below the cold isostatic pressing die. The support tray can be used with a forklift to transfer one or more cold isostatic pressing dies before and after loading, thereby improving loading efficiency.

[0013] Furthermore, a main frame is provided on the outside of the material tank and vacuum box, and a feeding rack is provided on one side of the main frame. An operating platform is provided at the glove opening and observation window. The feeding rack has a staircase structure and is connected to the upper material tank, allowing operators to move up and down to change the material tank or open and close the valve at the bottom of the material tank. Preferably, the operating platform is a movable platform with steps, allowing operators to perform operations at a higher position at the glove opening while standing on the platform.

[0014] The advantages and beneficial effects of this utility model are as follows: 1. Prevention of oxidation and contamination: The combined use of a vacuum environment and a deoxidation device can minimize the oxygen content in the filling environment, thereby preventing the oxidation of titanium powder; 2. Improve uniformity: The vibratory plate eliminates powder voids, reducing the occurrence of cracks or deformation in the green body after pressing; 3. By rotating the rotary disc, only one air exchange can be achieved, and titanium alloy powder can be filled into cold isostatic pressing molds at different locations at the same glove opening; 4. Precise quantity control: The weighing device can reduce filling errors and avoid overfilling or underfilling of titanium alloy powder; 5. Operational safety: The glove opening and observation window isolate personnel and materials, optimizing the loading environment for operators and reducing dust inhalation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the loading device structure of this utility model; Figure 2 This is a rear view of the loading device of this utility model; Figure 3 This is a front view of the loading device of this utility model; Figure 4 This is a sectional view at point A of the main view of the loading device of this utility model; Figure 5 This is a left view of the loading device of this utility model.

[0016] In the diagram: 1. Material tank; 101. Discharge port; 2. Vacuum chamber; 201. Feed inlet; 202. Chamber body; 203. Chamber door; 204. Air inlet; 205. Vacuum interface; 206. Glove opening; 207. Observation window; 208. Circulating exhaust port; 209. Circulating air inlet; 3. Discharge valve; 4. Feed valve; 5. Air inlet valve; 6. Exhaust valve; 7. Locking component; 8. Cold isostatic pressing mold; 9. Vibratory feeder; 10. Rotary disc; 11. Weighing device; 12. Deoxidizer; 13. Pressure gauge; 14. Funnel; 15. Support plate; 16. Main frame; 17. Feeding rack; 18. Operating platform; 19. Pipeline. Detailed Implementation

[0017] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0018] according to Figures 1-4As shown, this utility model is a material loading device for a cold isostatic pressing mold of titanium alloy powder, including a material tank 1 and a vacuum chamber 2. The material tank 1 is located above the vacuum chamber 2. The lower end of the material tank 1 is provided with a discharge port 101, and a discharge valve 3 is provided at the discharge port 101. The vacuum chamber 2 is connected to the discharge port 101. The top of the vacuum chamber 2 is provided with a feed port 201, and the discharge port 101 is connected to the feed port 201. A feed valve 4 is provided at the feed port 201. The vacuum chamber 2 includes a chamber body 202 and a door 203. An air inlet 204 is provided at the connection between the upper and / or discharge port 101 and the vacuum chamber 2. An air inlet valve 5 is provided at the air inlet 204. A vacuum interface 205 is provided on the chamber body 202. An air extraction valve 6 is provided at the vacuum interface 205. One side of the chamber door 203 is hinged to the chamber body 202. The other side of the chamber door 203 is movably connected to the chamber body 202 through a locking member 7. At least one side of the chamber body 202 is provided with a glove opening 206 and an observation window 207. A cold isostatic pressing mold 8 is placed at the bottom of the chamber body 202.

[0019] The workflow is as follows: Place the titanium alloy powder container 1 produced in the previous process on top of the vacuum chamber 2, install the discharge valve 3 at the discharge port 101, and close the discharge valve 3. Next, place the cold isostatic pressing mold 8 at the bottom of the chamber 202, close the chamber door 203, and use the locking device 7 to lock the chamber door 203 to the chamber 202. Then, connect the vacuum interface 205 to the vacuum equipment, open the suction valve 6 to perform vacuuming, and after a period of time, close the vacuum machine and suction valve 6. Connect the inlet 204 to the external argon supply equipment and open the inlet. Valve 5 allows argon gas to enter the chamber 202. The above gas exchange steps can be repeated multiple times to reduce the oxygen content in the vacuum chamber 2 to a minimum. Then, open the discharge valve 3 and the feed valve 4 to allow the titanium alloy powder in the material tank 1 to flow into the cold isostatic pressing mold 8 in the vacuum chamber 2. When a certain amount is reached, close the feed valve 4 and cover the cold isostatic pressing mold 8 with the cover to seal it. Repeat the filling steps until all the cold isostatic pressing molds 8 in the vacuum chamber 2 are filled. Then, open the chamber door 203 and take out the filled cold isostatic pressing mold 8.

[0020] according to Figure 4 As shown, in any embodiment, a vibratory feeder 9 is provided at the bottom of the housing 202, and the cold isostatic pressing mold 8 is placed on the vibratory feeder 9. The difference between this embodiment and other embodiments is that the vibratory feeder 9 can make the titanium alloy powder in the cold isostatic pressing mold 8 more compact through vibration after the titanium alloy powder is put into the mold, thus avoiding cracks or deformation of the blank after pressing.

[0021] according to Figure 4As shown, in any embodiment, a rotating disk 10 is provided at the bottom of the box 202 or on the vibratory feeder 9, and the cold isostatic pressing mold 8 is placed on the rotating disk 10. The difference between this embodiment and other embodiments is that before filling, one or more cold isostatic pressing molds 8 need to be placed on the rotating disk 10 according to their size. However, because the operator is filling inside the vacuum chamber 2, the operation is inconvenient due to environmental limitations. Without the rotating disk 10, during filling, after filling one or two cold isostatic pressing molds 8, other cold isostatic pressing molds 8 are far from the glove opening 206, requiring the glove opening 206 to be changed or only the accessible cold isostatic pressing molds 8 to be filled at once, resulting in low efficiency. The presence of the rotating disk 10 allows the distant cold isostatic pressing molds 8 to be rotated to the vicinity of the glove opening 206, thereby achieving one air exchange. At the same glove opening 206, titanium alloy powder can be filled into cold isostatic pressing molds 8 in different positions, significantly improving filling efficiency.

[0022] according to Figure 4 As shown, in any embodiment, a weighing device 11 is provided at the bottom of the housing 202, and the vibratory plate 9 or rotating plate 10 is placed on the weighing device 11. The difference between this embodiment and other embodiments is that the weighing device 11 can accurately weigh the titanium alloy powder in the cold isostatic pressing mold 8, preventing overfilling or underfilling, which would cause defects in the pressed blank.

[0023] according to Figure 5 As shown, in any embodiment, the housing 202 is provided with a circulating exhaust port 208 and a circulating air inlet 209, which are connected by a pipe 19. The difference between this embodiment and other embodiments is that, through the circulating exhaust port 208 and the circulating air inlet 209 connected by the pipe 19, an external circulating purification device can be connected inside, thereby continuously circulating and purifying the protective gas inside the housing, removing any potentially accumulated trace amounts of oxygen and water vapor, maintaining a high purity atmosphere inside the housing for a long time, and reducing the consumption of inert gas.

[0024] according to Figure 4 As shown, in any embodiment, a deoxygenation device 12 is provided inside the chamber 202. The difference between this embodiment and other embodiments is that after gas replacement, the oxygen in the vacuum chamber 2 cannot be completely removed. In order to further reduce the oxygen content, the deoxygenation device 12 is required for further deoxygenation.

[0025] according to Figure 3 As shown, in any embodiment, a pressure gauge 13 is installed on the housing 202. The difference between this embodiment and other embodiments is that the pressure gauge 13 can monitor the pressure state inside the housing 202 in real time.

[0026] according to Figure 3 As shown, in any embodiment, a funnel 14 is provided at the connection between the discharge port 101 and the inlet port 201. The difference between this embodiment and other embodiments is that the funnel 14 guides the titanium alloy powder to fall in a directional manner, reducing scattering.

[0027] according to Figure 4 As shown, in any embodiment, a support plate 15 is provided below the cold isostatic pressing mold 8. The difference between this embodiment and other embodiments is that by placing one or more cold isostatic pressing molds 8 on the support plate 15, a forklift can be used to transfer one or more cold isostatic pressing molds 8 before and after loading, thereby improving loading efficiency.

[0028] according to Figure 1 As shown, in any embodiment, a main frame 16 is provided on the outside of the material tank 1 and the vacuum box 2, a feeding rack 17 is provided on one side of the main frame 16, and an operating platform 18 is provided at the glove opening 206 and the observation window 207. The difference between this embodiment and other embodiments is that the feeding rack 17 is a staircase structure, and the feeding rack 17 is connected to the upper material tank 1, allowing operators to go up and down to change the material tank 1 or open and close the bottom valve of the material tank 1. The operating platform 18 allows operators to operate the glove opening 206 at a higher position.

[0029] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A cold isostatic pressing die charging device for titanium alloy powder, characterized by, The system includes a material tank (1) and a vacuum chamber (2). The material tank (1) is located above the vacuum chamber (2). The material tank (1) has a discharge port (101) at its lower end and a discharge valve (3) at the discharge port (101). The vacuum chamber (2) is connected to the discharge port (101). The vacuum chamber (2) has an inlet (201) at its top and the discharge port (101) is connected to the inlet (201). A feed valve (4) is provided at the inlet (201). The vacuum chamber (2) includes a chamber body (202) and a door (203). The chamber body (202) and / or the discharge port (101) are connected to each other. 1) An air inlet (204) is provided at the connection with the vacuum chamber (2), and an air inlet valve (5) is provided at the air inlet (204). A vacuum interface (205) is provided on the chamber body (202), and an air extraction valve (6) is provided at the vacuum interface (205). One side of the chamber door (203) is hinged to the chamber body (202), and the other side of the chamber door (203) is movably connected to the chamber body (202) through a locking member (7). At least one side of the chamber body (202) is provided with a glove opening (206) and an observation window (207). A cold isostatic pressing mold (8) is placed at the bottom of the chamber body (202).

2. A cold isostatic pressing die charging device for titanium alloy powder according to claim 1, wherein The bottom of the box (202) is provided with a vibratory plate (9), and the cold isostatic pressing mold (8) is placed on the vibratory plate (9).

3. A cold isostatic pressing die charging device for titanium alloy powder according to claim 1 or 2, characterized in that, A rotating disk (10) is provided at the bottom of the box (202) or on the vibrating plate (9), and the cold isostatic pressing mold (8) is placed on the rotating disk (10).

4. A cold isostatic pressing die charging device for titanium alloy powder according to claim 3, wherein The bottom of the box (202) is provided with a weighing device (11), and the vibrating plate (9) or rotating plate (10) is placed on the weighing device (11).

5. A cold isostatic pressing die charging apparatus for titanium alloy powder according to claim 1, wherein The housing (202) is provided with a circulating exhaust port (208) and a circulating air inlet (209), and the circulating exhaust port (208) and the circulating air inlet (209) are connected by a pipe (19).

6. A cold isostatic pressing die charging apparatus for titanium alloy powder according to claim 1, wherein The enclosure (202) is equipped with a deoxygenation device (12).

7. A cold isostatic pressing die charging apparatus for titanium alloy powder according to claim 1, wherein A pressure gauge (13) is installed on the housing (202).

8. A cold isostatic pressing die charging apparatus for titanium alloy powder according to claim 1, wherein A funnel (14) is provided at the connection between the discharge port (101) and the inlet port (201).

9. A cold isostatic pressing die charging apparatus for titanium alloy powder according to claim 1, wherein A support plate (15) is provided below the cold isostatic pressing mold (8).

10. A cold isostatic pressing die charging apparatus for titanium alloy powder according to claim 1, wherein The material tank (1) and vacuum box (2) are provided with a main frame (16) on the outside, a feeding rack (17) is provided on one side of the main frame (16), and an operating table (18) is provided at the glove opening (206) and the observation window (207).

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