Powder metallurgy forming die

Abstract

The invention belongs to the technical field of powder metallurgy, and particularly relates to a powder metallurgy forming die which comprises a base plate, a die sleeve and a female die, the die sleeve and the female die are installed on the base plate, the bottom of the female die is matched with a lower punch and a core rod, the top of the female die is matched with an upper punch, and the upper punch is driven by a hydraulic assembly; the upper punch is connected with a lubricating assembly through a connecting disc, the lubricating assembly comprises a pressing rod and a piston pipe, the pressing rod is connected with the connecting disc, the piston pipe is divided into an upper plug pipe and a lower plug pipe, an upper piston and a lower piston which are distributed are installed in the upper plug pipe and the lower plug pipe respectively, and the upper plug pipe and the lower plug pipe are connected with a discharging pipe and a telescopic pipe respectively. In the powder pressing process of the upper die punch, the upper plug pipe is compressed through the pressing rod, quantitative powder lubricant is sprayed on the upper die punch, then the brush on the brush plate is driven to be attached to the upper die punch by compressing the lower plug pipe, the powder lubricant on the upper die punch is evenly brushed, and therefore friction loss between the upper die punch and the female die is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of powder metallurgy, and particularly relates to a powder metallurgy forming die. Background Art

[0002] In the process of powder metallurgy processing, a forming die is required to cooperate with a hydraulic press to press the powder into a green part blank, and then subsequent treatments such as sintering are carried out.

[0003] The existing powder metallurgy forming die mainly consists of a female die, a core rod, an upper punch, a lower punch, and a female die sleeve. During the process of pressing the blank, a powder filling manipulator loads metal powder into the female die, and then the upper punch enters the female die under the push of the hydraulic press. The core rod will be inserted into the inner hole of the upper punch, and the metal powder in the female die is jointly extruded and formed by the upper punch and the lower punch. During this process, the upper punch needs to generate friction with the inner wall of the female die. Although a lubricant is added to the powder filled into the female die, due to the density requirements of the green part blank, the addition of the lubricant in the powder raw material is limited, usually within 0.6% of the total amount. This results in a limited amount of lubricant in the powder raw material, and the total amount of lubricant that can come into contact with the inner wall of the female die after the powder raw material is filled into the female die will be even lower. Therefore, the lubricating effect of this part of the lubricant between the female die and the upper punch is limited. During the long-term operation of the die, especially when pressing some metal powder raw materials with higher hardness, the friction loss between the upper punch and the inner wall of the female die will gradually increase, and finally the forming accuracy and quality of the die will be greatly reduced. Summary of the Invention

[0004] The purpose of the present invention is to provide a powder metallurgy forming die for the deficiencies of the prior art to solve the technical problems in the prior art.

[0005] The purpose of the present invention can be achieved by the following technical solutions: A powder metallurgy forming die, which includes a substrate and a die sleeve and a female die installed thereon. The bottom of the female die cooperates with the lower punch and the core rod, the top of the female die cooperates with the upper punch, and the upper punch is driven by a hydraulic component;

[0006] The upper punch is connected to a lubricating component through a connecting plate. The lubricating component includes a pressure rod and a piston tube. The pressure rod is connected to the connecting plate. The piston tube is divided into an upper piston tube and a lower piston tube. An upper piston and a lower piston are respectively installed in the upper piston tube and the lower piston tube, and the upper piston tube and the lower piston tube are respectively connected to a discharge pipe and a telescopic pipe;

[0007] A storage bin is installed on the discharge pipe. The storage bin supplies materials to the fixed material chamber inside the discharge pipe through a feed head. A discharge port is opened on the discharge pipe. A moving block is installed at one end of the discharge pipe near the upper plug pipe. A pressure discharge block that is opened under a certain pressure is installed on the moving block. The moving block is connected to a sealing plate through a connecting rod. A powder discharge plate is installed on one side of the fixed material chamber close to the discharge port. Powder discharge openings are opened on the powder discharge plate. A plug is installed on the sealing plate, and the plug cooperates with the powder discharge openings;

[0008] The telescopic pipe is connected to a brush plate, and the brush plate is connected to the sealing plate through a rotating shaft.

[0009] As a further optimization or improvement of this solution, the lubrication assembly further includes a telescopic rod. The upper piston and the lower piston are connected through the telescopic rod, and a telescopic ball head is installed at the bottom of the lower piston.

[0010] As a further optimization or improvement of this solution, the moving block is connected to the pressure discharge block through a connecting spring. A limiting plate is installed on one side of the fixed material chamber, and the moving block contacts the limiting plate.

[0011] As a further optimization or improvement of this solution, a steel needle is installed on the plug, and the steel needle is inserted into the fixed material chamber through the powder discharge opening on the powder discharge plate.

[0012] As a further optimization or improvement of this solution, a powder collecting assembly is rotatably installed on the discharge pipe. The powder collecting assembly includes a powder collecting plate. A steel brush is installed on the powder collecting plate, and the steel brush is located at the root of the brush on the brush plate.

[0013] As a further optimization or improvement of this solution, the powder collecting assembly further includes a powder collecting box, and the powder collecting box is installed at the bottom of the powder collecting plate.

[0014] As a further optimization or improvement of this solution, the powder collecting plate is connected to the discharge pipe through a return spring.

[0015] As a further optimization or improvement of this solution, a top plate is installed on the base plate. A hydraulic assembly is installed on the top plate. The hydraulic assembly is coaxially connected to the upper die punch through a flange.

[0016] Advantages of the present invention:

[0017] (1) During the process of the upper die punch in the present invention pressing the powder, the upper plug pipe is compressed through the pressure rod, and a quantitative amount of powder lubricant is sprayed on the upper die punch. Then, by compressing the lower plug pipe, the brush on the brush plate is driven to fit the upper die punch, and the powder lubricant on the upper die punch is evenly brushed, thereby reducing the frictional loss between the upper die punch and the female die;

[0018] Specifically, in the process of compressing the internal air pressure of the upper plug tube, the brush plate and the powder collecting plate are gradually separated, and the brush on the brush plate is pulled by the steel brush on the powder collecting plate. The excess lubricant adhering to the brush of the brush plate is brushed off by the steel brush and falls into the powder collecting box, thereby collecting the excess lubricant on the upper die and greatly reducing the waste of lubricant.

[0019] (2) In order to prevent the lubricant in the material storage box from blocking the powder discharge port before entering the material metering chamber, the plug is first inserted into the powder discharge port before entering the material metering chamber to prevent the powder lubricant from blocking the powder discharge port;

[0020] At the same time, since the powder lubricant accumulates in the dosing cavity, the lubricant at the bottom is easily compacted and difficult to be completely discharged from the inside of the dosing cavity. Therefore, the steel needle on the plug in the present invention will be inserted into the powder lubricant to ensure that the lubricant at the bottom of the dosing cavity is in a loose state to avoid the lubricant at the bottom being compacted. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 It is a front view of the overall structure of the present invention.

[0024] Figure 3 It is a cross-sectional view of the mold sleeve and the female mold structure.

[0025] Figure 4 This is a schematic diagram of the installation position of the lubrication component.

[0026] Figure 5 Schematic diagram of the overall structure of the lubrication component.

[0027] Figure 6 It is a schematic diagram of the structural cross-section of the piston tube.

[0028] Figure 7 Schematic diagram of the internal structure of the lubrication component.

[0029] Figure 8 for Figure 7 Schematic diagram of the structure of part A.

[0030] Figure 9 Schematic diagram of the connecting rod structure.

[0031] Figure 10 for Figure 7 Schematic diagram of the structure of part B.

[0032] Figure 11 It is a schematic diagram of the powder collecting plate and brush plate structure.

[0033] Figure 12 Schematic diagram of the plugging plate and powder discharging plate structure

[0034] The labels in the figure are: 1, base plate; 2, top plate; 3, hydraulic component; 4, upper die punch; 5, lower die punch; 6, core rod; 7, die sleeve; 8, powder collecting component; 801, powder collecting plate; 802, return spring; 803, powder collecting box; 804, steel brush; 9, lubricating component; 901, pressure rod; 902, piston tube; 9021, upper plug tube; 9022, lower plug tube; 903, upper piston; 904, telescopic rod; 905, lower piston; 906, telescopic ball head; 907, discharge pipe; 908, storage box; 909, discharge port; 910, feed head; 911, powder discharging plate; 912, limiting plate; 913, moving block; 914, pressing block; 915, connecting spring; 916, material fixing cavity; 917, rotating shaft; 918, plugging plate; 919, brush plate; 920, telescopic tube; 921, plug head; 922, steel needle; 923, powder discharging port; 924, connecting rod; 10, connecting disk; 11, female die Specific implementation mode

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention

[0036] See Figures 1-10 , a powder metallurgy forming die, which includes a base plate 1 and a die sleeve 7 and a female die 11 installed thereon. The bottom of the female die 11 cooperates with the lower die punch 5 and the core rod 6, and the top of the female die 11 cooperates with the upper die punch 4, and the upper die punch 4 is driven by the hydraulic component 3

[0037] The upper die punch 4 is connected to the lubricating component 9 through the connecting disk 10. The lubricating component 9 includes a pressure rod 901 and a piston tube 902. The pressure rod 901 is connected to the connecting disk 10. The piston tube 902 is divided into an upper plug tube 9021 and a lower plug tube 9022. An upper piston 903 and a lower piston 905 are respectively installed in the upper plug tube 9021 and the lower plug tube 9022. The upper plug tube 9021 and the lower plug tube 9022 are respectively connected to the discharge pipe 907 and the telescopic tube 920

[0038] A storage bin 908 is installed on the discharge pipe 907. The storage bin 908 supplies materials to the material - fixing cavity 916 inside the discharge pipe 907 through a feed head 910. An outlet 909 is provided on the discharge pipe 907. A moving block 913 is installed at one end of the discharge pipe 907 near the upper plug pipe 9021. A pressure - discharging block 914 that is opened under a fixed pressure is installed on the moving block 913. The moving block 913 is connected to a sealing plate 918 through a connecting rod 924. A powder - discharging plate 911 is installed on one side of the material - fixing cavity 916 near the outlet 909. A powder - discharging port 923 is provided on the powder - discharging plate 911. A plug 921 is installed on the sealing plate 918, and the plug 921 cooperates with the powder - discharging port 923;

[0039] The telescopic pipe 920 is connected to a brush plate 919, and the brush plate 919 is connected to the sealing plate 918 through a rotating shaft 917.

[0040] Specifically, a top plate 2 is installed on the base plate 1, and a hydraulic component 3 is installed on the top plate 2. The hydraulic component 3 is coaxially connected to the upper die punch 4 through a flange.

[0041] It should be noted that the forming die also includes a driving component for the lower die punch 5, a powder - filling manipulator, and a material - taking component. The above components are all prior arts, and the present invention does not explain their principles, which does not affect the integrity of the present invention; multiple groups of lubricating components 9 and powder - collecting components 8 can be installed according to actual usage; the upper piston 903 and the lower piston 905 are one - way air - intake pistons.

[0042] During use, metal powder is loaded into the female die 11 by a powder - filling manipulator. Then, the hydraulic component 3 is driven to push the upper die punch 4 to move into the female die 11. At the same time, the core rod 6 will insert into the inner hole of the upper die punch 4, and the metal powder in the female die 11 is jointly extruded and formed by the upper die punch 4 and the lower die punch 5. The storage bin 908 stores powdery lubricant, such as zinc stearate powder.

[0043] During the process of the hydraulic component 3 pushing the upper die punch 4 to move into the female die 11, the upper die punch 4 drives the pressure rod 901 to move downward through the connecting plate 10. At this time, the pressure rod 901 compresses the gas inside the upper plug pipe 9021 through the upper piston 903. At the same time, the telescopic rod 904 is pressed and contracted. As the air pressure inside the upper plug pipe 9021 increases, the air pressure pushes the moving block 913 to move towards the outlet 909 direction, see Figure 8 . At the same time, the storage bin 908 injects lubricant into the material - fixing cavity 916 through the feed head 910. Since the internal capacity of the material - fixing cavity 916 is fixed, the amount of lubricant injected into the material - fixing cavity 916 by the storage bin 908 is a fixed value, ensuring the lubrication effect of the lubricant while effectively reducing the waste of the lubricant;

[0044] See Figures 9-12, as the moving block 913 moves, the moving block 913 drives the sealing plate 918 to rotate through the connecting rod 924, so that the plug 921 on the sealing plate 918 disengages from the powder discharge port 923 on the powder discharge plate 911. As the moving block 913 moves, the moving block 913 contacts the limiting plate 912. At this time, the limiting plate 912 limits the moving block 913. When the air pressure inside the upper plug tube 9021 increases again, when the air pressure reaches the specified value, the air pressure pushes the pressure discharge block 914 to move. At this time, the connecting spring 915 is stretched. When the pressure discharge block 914 disengages from the connecting spring 915, the compressed gas in the upper plug tube 9021 discharges the lubricant in the metering chamber 916 through the powder discharge port 923 on the powder discharge plate 911. Then the lubricant sprays onto the surface of the upper punch 4 through the discharge port 909;

[0045] As the upper punch 4 moves, the pressure rod 901 compresses the telescopic rod 904 to the limit through the upper piston 903. Then the upper piston 903 drives the lower piston 905 to move. The lower piston 905 moves to press the telescopic ball head 906. At this time, the telescopic ball head 906 releases the limit on the lower piston 905. As the lower piston 905 moves, the lower piston 905 compresses the gas inside the lower plug tube 9022, and the air pressure inside the lower plug tube 9022 increases. The air pressure drives the telescopic tube 920 to open and pushes the brush plate 919 to rotate towards the upper punch 4. At the same time, the brush plate 919 drives the powder collecting plate 801 to rotate synchronously. As the brush plate 919 rotates, the brush on the brush plate 919 fits on the upper punch 4 to spread the lubricant sprayed on the upper punch 4 evenly. During this process, the excess lubricant on the upper punch 4 will adhere to the brush on the brush plate 919;

[0046] The rotation of the brush plate 919 will drive the sealing plate 918 to rotate in the same direction. The steel needle 922 on the sealing plate 918 re-inserts into the powder discharge port 923, avoiding the phenomenon that the lubricant inside the metering chamber 916 blocks the powder discharge port 923 on the powder discharge plate 911. At the same time, the steel needle 922 on the plug 921 will insert into the powdered lubricant inside the metering chamber 916, ensuring that the lubricant at the bottom of the metering chamber 916 is in a loose state, avoiding the compaction of the lubricant at the bottom, and facilitating the complete discharge of the powdered lubricant inside the metering chamber 916.

[0047] See Figures 6-7 , the lubrication assembly 9 further includes a telescopic rod 904. The upper piston 903 and the lower piston 905 are connected by the telescopic rod 904, and a telescopic ball head 906 is installed at the bottom of the lower piston 905.

[0048] It should be noted that during the downward movement of the upper die punch 4, first, the upper piston 903 is driven to move downward by the pressure rod 901. The lower piston 905 is fixed by the telescopic ball head 906. At this time, the upper piston 903 moves downward to compress the gas inside the upper plug tube 9021 and press the telescopic rod 904, causing the telescopic rod 904 to contract; when the powder lubricant inside the material - feeding cavity 916 is sprayed onto the upper die punch 4, the telescopic rod 904 is compressed and pressed to the limit. The movement of the upper piston 903 will drive the lower piston 905 to move synchronously. At this time, the lower piston 905 moves downward and presses the telescopic ball head 906, causing the telescopic ball head 906 to release the limit on the lower piston 905, enabling the lower piston 905 to compress the gas inside the lower plug tube 9022 and push the brush plate 919 to rotate, prompting the brush on the brush plate 919 to fit the powder lubricant on the upper die punch 4 and brush it evenly.

[0049] See Figure 8 , the moving block 913 is connected to the pressure - discharging block 914 through a connecting spring 915. A limiting plate 912 is installed on one side of the material - feeding cavity 916, and the moving block 913 contacts the limiting plate 912.

[0050] It should be noted that when the air pressure inside the upper plug tube 9021 increases, the air pressure pushes the moving block 913 to move towards the discharge port 909. When the moving block 913 contacts the limiting plate 912, the moving block 913 is fixed. When the air pressure inside the upper plug tube 9021 increases to a specified value, the air pressure pushes the pressure - discharging block 914 to move and separate from the moving block 913. At this time, the gas in the upper plug tube 9021 sprays the lubricant inside the material - feeding cavity 916 onto the upper die punch 4 at a specified air pressure.

[0051] See Figure 8 and Figure 12 , a steel needle 922 is installed on the plug head 921, and the steel needle 922 is inserted into the material - feeding cavity 916 through the powder - discharging port 923 on the powder - discharging plate 911.

[0052] It should be noted that the powder - discharging plate 911 is a side wall of the material - feeding cavity 916. The main function of the powder - discharging port 923 on the powder - discharging plate 911 is to discharge the powder lubricant from the material - feeding cavity 916; through - holes are also opened on the other side wall of the material - feeding cavity 916, and their aperture is smaller than that of the powder - discharging port 923. The main function is to introduce the air pressure inside the upper plug tube 9021 into the material - feeding cavity 916, while preventing the powder lubricant from being discharged through the through - holes.

[0053] Since the powder lubricant inside the material - feeding cavity 916 is discharged from the powder - discharging port 923 on the powder - discharging plate 911, in order to avoid the phenomenon that the lubricant in the storage box 908 blocks the powder - discharging port 923 when entering the material - feeding cavity 916, before entering the material - feeding cavity 916, the plug head 921 will be preferentially inserted into the powder - discharging port 923 to prevent the powder lubricant from blocking the powder - discharging port 923.

[0054] Since the powder lubricant accumulates in the dosing chamber 916, the lubricant at the bottom is easily compacted and difficult to be completely discharged from the inside of the dosing chamber 916. Therefore, the steel needle 922 on the plug 921 will be inserted into the powder lubricant to ensure that the lubricant at the bottom of the dosing chamber 916 is in a loose state to prevent the lubricant at the bottom from being compacted.

[0055] The powder collecting assembly 8 is rotatably mounted on the discharge pipe 907 . The powder collecting assembly 8 includes a powder collecting plate 801 . A steel brush 804 is mounted on the powder collecting plate 801 . The steel brush 804 is located at the root of the brush on the brush plate 919 .

[0056] Specifically, the powder collecting assembly 8 further includes a powder collecting box 803 , and the powder collecting box 803 is installed at the bottom of the powder collecting plate 801 .

[0057] Specifically, the powder collecting plate 801 is connected to the discharge pipe 907 via a return spring 802 .

[0058] It should be noted that the present invention mainly sprays the powder lubricant on the upper punch 4 by compressing the upper plug tube 9021; and drives the brush on the brush plate 919 to fit the upper punch 4 by compressing the lower plug tube 9022, so as to evenly apply the powder lubricant on the upper punch 4. However, the excess powder lubricant on the upper punch 4 will inevitably adhere to the brush on the brush plate 919. Therefore, in order to collect the powder lubricant on the brush plate 919 and reduce waste;

[0059] Therefore, see Figures 9-12 As the moving block 913 moves, the moving block 913 drives the sealing plate 918 to rotate through the connecting rod 924, so that the plug 921 on the sealing plate 918 is separated from the powder discharge port 923 on the powder discharge plate 911. The rotation of the sealing plate 918 drives the brush plate 919 to rotate in the same direction. When the brush plate 919 rotates, the brush plate 919 and the powder collecting plate 801 are gradually separated, and the brush on the brush plate 919 is pulled from the steel brush 804 on the powder collecting plate 801 (the brush will not be completely pulled out from the steel brush 804). In this process, the excess lubricant adhering to the brush of the brush plate 919 is pulled off by the steel brush 804 and falls into the powder collecting box 803, thereby collecting the excess lubricant on the upper die punch 4 and greatly reducing the waste of lubricant.

[0060] The implementation principle of the present invention is as follows: when in use, metal powder is loaded into the female die 11 by a powder filling manipulator, and then the hydraulic assembly 3 is driven to push the upper die punch 4 to move inside the female die 11, and at the same time, the core rod 6 is inserted into the inner hole of the upper die punch 4, and the metal powder in the female die 11 is extruded and formed by the upper die punch 4 and the lower die punch 5;

[0061] During the process of the hydraulic component 3 pushing the upper die punch 4 to move inside the female die 11, the upper die punch 4 drives the pressure rod 901 to move downward through the connecting plate 10. At this time, the pressure rod 901 compresses the gas inside the upper plug tube 9021 through the upper piston 903. At the same time, the telescopic rod 904 is pressed and contracted. As the air pressure inside the upper plug tube 9021 increases, the air pressure pushes the moving block 913 to move towards the discharge port 909. Refer to Figure 8 , and at the same time, the storage box 908 injects lubricant into the fixed material cavity 916 through the feeding head 910. The internal capacity of the fixed material cavity 916 is fixed. Therefore, the amount of lubricant injected into the fixed material cavity 916 by the storage box 908 is a fixed value, which ensures the lubrication effect of the lubricant and effectively reduces the waste of the lubricant;

[0062] As the moving block 913 moves, the moving block 913 drives the blocking plate 918 to rotate through the connecting rod 924, so that the plug head 921 on the blocking plate 918 disengages from the powder discharge port 923 on the powder discharge plate 911. As the moving block 913 moves, the moving block 913 contacts the limit plate 912. At this time, the limit plate 912 limits the moving block 913. When the air pressure inside the upper plug tube 9021 increases again, when the air pressure reaches the specified value, the air pressure pushes the pressure discharge block 914 to move. At this time, the connecting spring 915 is stretched. When the pressure discharge block 914 disengages from the connecting spring 915, the compressed gas inside the upper plug tube 9021 discharges the lubricant inside the fixed material cavity 916 through the powder discharge port 923 on the powder discharge plate 911. Then, the lubricant is sprayed onto the surface of the upper die punch 4 through the discharge port 909;

[0063] As the upper die punch 4 moves, the pressure rod 901 compresses the telescopic rod 904 to the limit through the upper piston 903. Then, the upper piston 903 drives the lower piston 905 to move. The lower piston 905 moves to press the telescopic ball head 906. At this time, the telescopic ball head 906 releases the limit on the lower piston 905. As the lower piston 905 moves, the lower piston 905 compresses the gas inside the lower plug tube 9022. The air pressure inside the lower plug tube 9022 increases, and the air pressure drives the expansion of the telescopic tube 920 and pushes the brush plate 919 to rotate towards the upper die punch 4. At the same time, the brush plate 919 drives the powder collecting plate 801 to rotate synchronously. As the brush plate 919 rotates, the brush on the brush plate 919 fits on the upper die punch 4, and the lubricant sprayed on the upper die punch 4 is brushed evenly. During this process, the excess lubricant on the upper die punch 4 will adhere to the brush on the brush plate 919;

[0064] The rotation of the brush plate 919 will drive the same-direction rotation of the plugging plate 918. The steel needles 922 on the plugging plate 918 will re-insert into the powder discharge port 923, avoiding the phenomenon that the lubricant inside the metering cavity 916 plugs the powder discharge port 923 on the powder discharge plate 911. At the same time, the steel needles 922 on the plug 921 will insert into the powdered lubricant inside the metering cavity 916, ensuring that the lubricant at the bottom of the metering cavity 916 is in a loose state, avoiding the compaction of the lubricant at the bottom, and facilitating the complete discharge of the powdered lubricant inside the metering cavity 916;

[0065] During the next group of powder pressing processes, refer to Figures 9-12 , the increased air pressure inside the upper plug tube 9021 drives the movement of the moving block 913. The moving block 913 drives the rotation of the plugging plate 918 through the connecting rod 924, causing the plug 921 on the plugging plate 918 to disengage from the powder discharge port 923 on the powder discharge plate 911. The rotation of the plugging plate 918 drives the same-direction rotation of the brush plate 919. When the brush plate 919 rotates, the brush plate 919 gradually separates from the powder collecting plate 801, and the bristles on the brush plate 919 are pulled out from the steel brush 804 on the powder collecting plate 801 (the bristles will not be completely pulled out from the steel brush 804). During this process, the excess lubricant adhered to the bristles of the brush plate 919 is combed off through the steel brush 804 and drops into the powder collecting box 803, realizing the collection of the excess lubricant on the upper punch 4 and greatly reducing the waste of lubricant.

[0066] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A powder metallurgy forming die, characterized in that: It includes a substrate (1), a die sleeve (7) and a female die (11) mounted thereon. The bottom of the female die (11) cooperates with a lower punch (5) and a core rod (6), and the top of the female die (11) cooperates with an upper punch (4), and the upper punch (4) is driven by a hydraulic component (3); The upper punch (4) is connected to a lubrication component (9) through a connecting plate (10). The lubrication component (9) includes a pressure rod (901) and a piston tube (902). The pressure rod (901) is connected to the connecting plate (10). The piston tube (902) is divided into an upper plug tube (9021) and a lower plug tube (9022). An upper piston (903) and a lower piston (905) are respectively installed in the upper plug tube (9021) and the lower plug tube (9022) for distributed movement. The upper plug tube (9021) and the lower plug tube (9022) are respectively connected to a discharge pipe (907) and a telescopic tube (920); A storage box (908) is installed on the discharge pipe (907). The storage box (908) supplies materials to a fixed material cavity (916) inside the discharge pipe (907) through a feed head (910). A discharge port (909) is opened on the discharge pipe (907). A moving block (913) is installed at one end of the discharge pipe (907) close to the upper plug tube (9021). A discharge pressure block (914) that is opened under a certain pressure is installed on the moving block (913). The moving block (913) is connected to a blocking plate (918) through a connecting rod (924). A powder discharge plate (911) is installed on one side of the fixed material cavity (916) close to the discharge port (909). A powder discharge port (923) is opened on the powder discharge plate (911). A plug (921) is installed on the blocking plate (918), and the plug (921) cooperates with the powder discharge port (923); The telescopic tube (920) is connected to a brush plate (919), and the brush plate (919) is connected to the blocking plate (918) through a rotating shaft (917).

2. The powder metallurgy forming die according to claim 1, characterized in that: The lubrication component (9) further includes a telescopic rod (904). The upper piston (903) and the lower piston (905) are connected through the telescopic rod (904), and a telescopic ball head (906) is installed at the bottom of the lower piston (905).

3. A powder metallurgy forming die according to claim 1, characterized in that: The moving block (913) is connected to the discharge pressure block (914) through a connecting spring (915). A limiting plate (912) is installed on one side of the fixed material cavity (916), and the moving block (913) contacts the limiting plate (912).

4. A powder metallurgy forming die according to claim 1, characterized in that: A steel needle (922) is installed on the plug (921), and the steel needle (922) is inserted into the fixed material cavity (916) through the powder discharge port (923) on the powder discharge plate (911).

5. A powder metallurgy forming die according to claim 1, wherein: A powder collecting component (8) is rotatably installed on the discharge pipe (907). The powder collecting component (8) includes a powder collecting plate (801), and a steel brush (804) is installed on the powder collecting plate (801). The steel brush (804) is located at the root of the brush on the brush plate (919).

6. The powder metallurgy forming die according to claim 5, wherein: The powder collecting component (8) further includes a powder collecting box (803), and the powder collecting box (803) is installed at the bottom of the powder collecting plate (801).

7. A powder metallurgy forming die according to claim 6, characterized in that: The powder collecting plate (801) is connected to the discharge pipe (907) through a return spring (802).

8. A powder metallurgy forming die according to claim 1, characterized in that: A top plate (2) is installed on the substrate (1), and a hydraulic component (3) is installed on the top plate (2). The hydraulic component (3) is coaxially connected to the upper die punch (4) through a flange.

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