Powder metallurgy integrated forming die

Abstract

The invention relates to the field of powder metallurgy dies, in particular to a powder metallurgy integrated forming die which comprises a fixing frame, and the middle of the fixing frame is fixedly connected with a forming die. A movable powder injector is connected to the fixed frame in a sliding manner; the forming mold comprises a fixing plate, a mounting hole is formed in the middle of the fixing plate, a hollow mold column is clamped in the mounting hole, an electric telescopic rod is arranged on the lower side of the hollow mold column, and the power output end of the electric telescopic rod is inserted into the hollow mold column and fixedly connected with a demolding block. The upper end of the hollow die column is sleeved with a temperature monitoring ring, the upper end of the fixing frame is fixedly connected with a pressurizing device, the power output end of the pressurizing device is fixedly connected with a pressing unit matched with the hollow die column, and the lower end of the temperature monitoring ring is fixedly connected with an auxiliary lubricating structure. Friction temperature monitoring, auxiliary lubrication and detection after lubrication of the powder metallurgy integrated forming die are achieved, and the stability of the forming process and the product quality are ensured.

Description

Technical Field

[0001] The present invention relates to a powder metallurgy integrated molding die, in particular to a powder metallurgy integrated molding die applied in the field of powder metallurgy molds. Background Art

[0002] Existing powder metallurgy integrated molding is an advanced manufacturing technology used to produce metal parts with complex shapes. This mold is made by filling metal powder into the mold and then forming the desired part through a pressing and sintering process. The design and manufacture of integrated molding requires precise engineering technology and material science knowledge to ensure the dimensional accuracy and mechanical properties of the parts.

[0003] The main advantage of this type of mold is that it can produce parts with complex structures, light weight and high strength, while reducing material waste and production costs. Powder metallurgy integrated molding molds are widely used in industries such as automobiles, aerospace, medical devices and electronics. With the continuous advancement of technology, the performance and application range of this type of mold are still expanding.

[0004] The specification of Chinese invention patent CN116727667B discloses a powder metallurgy forming die, including a die body, wherein a lubricant coating device is provided at the upper die punch of the die body; the lubricant coating device includes a coating belt, a drive module, and a lubricant spraying module. The invention provides a lubricant coating device corresponding to the upper die punch, so that the lubricant can be coated on the surface of the upper die punch during the process of pressing the blank by the upper die punch, thereby greatly reducing the friction loss between the upper die punch and the female die.

[0005] The specification of Chinese invention patent CN116550977B discloses a powder metallurgy rotary forming mold for an engine pulley, including a processing table and a rotary cutting device, wherein the bottom of the inner cavity of the processing table is fixedly connected to a control base plate, a traction push rod is slidably connected to the axis of the inner cavity of the control base plate, a closed sliding plate is fixedly connected to the top of the traction push rod, and a switching lever is rotatably connected to the axis of the inner cavity of the rotary cutting device. Each time the device pressurizes the inner cavity of the processing table, the metal powder near the cutting notch of the processing table can be absorbed into the interior of the docking pressure shell through the docking pressure shell, thereby avoiding the above-mentioned problems and recovering the metal powder at the same time.

[0006] During stamping and demolding, the related structures of existing powder metallurgy forming dies are prone to friction with the dies, especially when some metal powder raw materials with higher hardness are pressed into blanks. The friction loss of the inner wall of the dies will gradually increase, and finally cause the molding precision and quality of the dies to be greatly reduced. However, there are no wear monitoring and relubrication measures in the existing powder metallurgy forming dies. Summary of the invention

[0007] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that there are no wear monitoring and relubrication measures in the existing powder metallurgy forming dies.

[0008] In order to solve the above problems, the present invention provides a powder metallurgy integrated molding die, comprising a fixed frame, the middle part of which is fixedly connected to the molding die; a movable powder injector is slidably connected to the fixed frame;

[0009] The forming mold comprises a fixed plate, a mounting hole is provided in the middle of the fixed plate, a hollow mold column is clamped in the mounting hole, an electric telescopic rod is provided on the lower side of the hollow mold column, a connecting rod is rotatably connected to the power output end of the electric telescopic rod, the connecting rod is inserted into the hollow mold column and fixedly connected to the stripping module, a rod sleeve is sleeved on the connecting rod, and the rod sleeve is rotatably connected to the bottom end of the hollow mold column; a stepper motor is installed in the fixed frame, and a transmission belt is connected between the power output end of the stepper motor and the rod sleeve;

[0010] The upper end of the hollow mold column is sleeved with a temperature monitoring ring, which includes a fixed ring, and a plurality of evenly distributed temperature sensors are fixedly connected to the fixed ring;

[0011] The upper end of the fixed frame is fixedly connected with a mounting plate matching the forming mold, the mounting plate is fixedly connected with a pressurizing device, the power output end of the pressurizing device is fixedly connected with a pressing unit matching the hollow mold column, the pressing unit includes a fixed column, and a pressurizing block matching the hollow mold column is provided on the lower side of the fixed column.

[0012] A spring telescopic column is rotatably connected between the pressure block and the fixed column, an electromagnet matching the pressure block is installed in the fixed column, a pair of electromagnetic clamps are fixedly connected to the inner wall of the lower end of the fixed column, and a fixed groove matching the movable end of the electromagnetic clamp is opened at the top of the pressure block;

[0013] The lower end of the temperature monitoring ring is fixedly connected to an auxiliary lubrication structure, which includes an oil guide ring sleeved on the hollow mold column, the output end of the oil guide ring is fixedly connected to an oil injection pipe inserted into the hollow mold column, and the top end of the oil injection pipe is connected to a nozzle embedded in the inner wall of the hollow mold column.

[0014] In the above-mentioned powder metallurgy integrated molding die, wear monitoring is achieved during the stamping process, which facilitates lubrication replenishment of the stamping structure and the demoulding structure.

[0015] As a further improvement of the present application, the hollow mold column includes a positioning cylinder fixedly connected to the bottom end of the fixed plate, an inner mold cylinder is detachably connected to the positioning cylinder, a plurality of oil drainage holes are provided at the bottom end of the positioning cylinder, the inner mold cylinder includes an upper cylinder body and a lower cylinder body, a cavity is provided in the upper cylinder body, and a plurality of through-holes matching the oil filling pipes are provided on the positioning cylinder and the lower cylinder body.

[0016] As a further improvement of the present application, a heat-conducting film is laid on the upper end of the inner wall of the mold cylinder, and the sensing end of the temperature sensor is inserted into the positioning cylinder and connected to the heat-conducting film.

[0017] As a further improvement of the present application, the movable powder injector includes a powder storage box with a powder injector, the powder storage box slides relatively with the fixed frame, and the upper and lower ends of the movable powder injector are fixedly connected with brush layers.

[0018] As another improvement of the present application, when the stripping module is in the initial position, the upper surface of the stripping module is located at the lower part of the detection area of ​​the temperature monitoring ring.

[0019] As another improved supplement of the present application, a buffer is fixedly connected to the bottom end of the stripping module, and when the stripping module is pressed down, the maximum descending position of the stripping module is located within the detection area of ​​the temperature monitoring ring.

[0020] As another improved supplement of the present application, the bottom end of the temperature monitoring ring is fixedly connected to an oil stain detection unit, the oil stain detection unit includes an ultraviolet lamp and an image acquisition device, and a pair of detection holes are opened in the middle of the hollow mold column, and the detection holes are filled with transparent resin.

[0021] As another improvement of the present application, it also includes an auxiliary molding system, the auxiliary molding system includes a processor, and the processor is fixedly connected with a control module, a data processing module, a monitoring module and a detection module;

[0022] The control module is used to control the operation of the pressurizing device, the auxiliary lubrication structure and the movable powder injector;

[0023] The monitoring module is used to control the temperature monitoring ring to monitor the temperature change of the inner wall of the hollow mold column;

[0024] The detection module controls the oil pollution detection unit to perform oil pollution detection;

[0025] The data processing module is used to process monitoring data and detection data and make judgments.

[0026] As another improvement supplement to the present application, the specific working process of oil pollution detection includes: after the pressure block and the stripping module have completed the relubrication, the stripping module is controlled to move to the auxiliary lubrication structure, and then the upper surface of the stripping module is subjected to fluorescence detection through an ultraviolet lamp and an image acquisition device. If the range of the fluorescent spot in the identified image exceeds the set value, it is judged to contain lubricating oil. At this time, the pressure block is driven to move downward a set distance, and the stripping module rises to fit with the surface of the fixed plate. At this time, the movable powder injector is controlled to move between the two and run back and forth, so that the brush layers at the upper and lower ends of the movable powder injector clean the clean end faces of the stripping module and the pressure block.

[0027] In summary, this solution realizes friction temperature monitoring, auxiliary lubrication and post-lubrication detection of powder metallurgy integrated molding dies, ensuring the stability of the molding process and product quality; when the mold is subjected to greater friction, lubrication can be carried out in time, and the end surface status of the demolding block and the pressure block can be detected after lubrication to ensure that excess lubricating oil does not affect the subsequent powder composition. It is easy to adapt to the molding needs of different metal powders, extend the service life of the mold, and reduce long-term operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a three-dimensional diagram of the mold of the first and second embodiments of the present application;

[0029] Figure 2 This is a cross-sectional view of the mold of the first and second embodiments of the present application;

[0030] Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure at the center;

[0031] Figure 4 for Figure 2 A schematic diagram of the cross-sectional structure at B in the middle;

[0032] Figure 5 for Figure 2 Schematic diagram of the cross-sectional structure at C in the middle;

[0033] Figure 6 This is a schematic diagram of the working state of the movable powder injector in the first and second embodiments of the present application;

[0034] Figure 7 This is a cross-sectional stereoscopic view of a hollow mold column according to the second embodiment of the present application;

[0035] Figure 8 This is a block diagram of the auxiliary molding system of the second embodiment of the present application.

[0036] Description of the numbers in the figure:

[0037] 1. Fixed frame; 2. Forming mold; 21. Fixed plate; 22. Hollow mold column; 221. Positioning cylinder; 222. Inner mold cylinder; 23. Electric telescopic rod; 24. De-module; 25. Connecting rod; 26. Rod sleeve; 3. Temperature monitoring ring; 31. Fixed ring; 32. Temperature sensor; 33. Oil detection unit; 4. Pressurizing device; 5. Pressing unit; 51. Fixed column; 52. Pressurizing block; 53. Spring telescopic column; 54. Electromagnet; 55. Electromagnetic clamp; 6. Auxiliary lubrication structure; 61. Oil guide ring; 62. Oil injection pipe; 7. Movable powder injector. DETAILED DESCRIPTION

[0038] The following describes two implementation modes of the present application in detail with reference to the accompanying drawings.

[0039] The first implementation method:

[0040] Figure 1-7 A powder metallurgy integrated molding die is shown, comprising a fixed frame 1, a molding die 2 is fixedly connected to the middle of the fixed frame 1; a movable powder injector 7 is slidably connected to the fixed frame 1; the movable powder injector 7 comprises a powder storage box with a powder injector, the powder injector is used to inject the mixed powder in the powder storage box into the mold, the powder injector is a powder injection device for powder metallurgy in the prior art used by a person skilled in the art, the powder storage box slides relatively with the fixed frame 1, and brush layers are fixedly connected to the upper and lower ends of the movable powder injector 7;

[0041] The forming mold 2 includes a fixed plate 21, a mounting hole is provided in the middle of the fixed plate 21, a hollow mold column 22 is clamped in the mounting hole, an electric telescopic rod 23 is provided on the lower side of the hollow mold column 22, a connecting rod 25 is rotatably connected to the power output end of the electric telescopic rod 23, the connecting rod 25 is inserted into the hollow mold column 22 and fixedly connected to the stripping module 24, a rod sleeve 26 is sleeved on the connecting rod 25, and the rod sleeve 26 is rotatably connected to the bottom end of the hollow mold column 22; a stepping motor is installed in the fixed frame 1, and a transmission belt is connected between the power output end of the stepping motor and the rod sleeve 26;

[0042] The hollow mold column 22 includes a positioning cylinder 221 fixedly connected to the bottom end of the fixed plate 21, and an inner mold cylinder 222 is detachably connected to the positioning cylinder 221. The bottom end of the positioning cylinder 221 is provided with a plurality of oil drain holes, and the oil drain holes are located close to the inner wall of the inner mold cylinder 222; the inner mold cylinder 222 includes an upper cylinder body and a lower cylinder body, and a cavity is provided in the upper cylinder body. The positioning cylinder 221 and the lower cylinder body are both provided with a plurality of through-holes matching the oil injection pipe 62;

[0043] Optionally, the upper cylinder and the lower cylinder are designed as independent structures, and the inner mold cylinder 222 is formed by splicing the upper cylinder and the lower cylinder;

[0044] When the stripping module 24 is in the initial position, the upper surface of the stripping module 24 is located at the lower part of the detection area of ​​the temperature monitoring ring 3, and a buffer is fixedly connected to the bottom end of the stripping module 24. When the stripping module 24 is pressed down, the maximum descending position of the stripping module 24 is located in the detection area of ​​the temperature monitoring ring 3. A person skilled in the art may install the stripping module 24 using a suitable buffer device in the prior art, such as a spring buffer.

[0045] A temperature monitoring ring 3 is sleeved on the upper end of the hollow mold column 22, and the temperature monitoring ring 3 includes a fixed ring 31, on which a plurality of evenly distributed temperature sensors 32 are fixedly connected; a heat-conducting film is laid on the upper end of the inner wall of the inner mold cylinder 222, and the sensing end of the temperature sensor 32 is inserted into the positioning cylinder 221 and connected to the heat-conducting film. The sensing end of the temperature sensor 32 is retractable. When the inner mold cylinder 222 is disassembled, the sensing end of the temperature sensor 32 is retracted into the fixed ring 31.

[0046] The upper end of the fixing frame 1 is fixedly connected with a mounting plate matching the forming mold 2, the mounting plate is fixedly connected with a pressurizing device 4, the power output end of the pressurizing device 4 is fixedly connected with a pressing unit 5 matching the hollow mold column 22, the pressing unit 5 includes a fixing column 51, and a pressurizing block 52 matching the hollow mold column 22 is provided at the lower side of the fixing column 51.

[0047] A spring telescopic column 53 is rotatably connected between the pressure block 52 and the fixed column 51. An electromagnet 54 matching the pressure block 52 is installed in the fixed column 51. A pair of electromagnetic clamps 55 are fixedly connected to the inner wall of the lower end of the fixed column 51. A fixing groove matching the movable end of the electromagnetic clamp 55 is provided at the top of the pressure block 52. The spring telescopic column 53 includes a telescopic rod sleeved with a self-resetting spring. A permanent magnet matching the electromagnet 54 is fixedly connected to the top of the pressure block 52. When the electromagnet 54 is turned on, it repels the permanent magnet.

[0048] The lower end of the temperature monitoring ring 3 is fixedly connected to an auxiliary lubrication structure 6, which includes an oil guide ring 61 sleeved on the hollow mold column 22, and the output end of the oil guide ring 61 is fixedly connected to an oil injection pipe 62 inserted into the hollow mold column 22, and the top end of the oil injection pipe 62 is connected to a nozzle embedded in the inner wall of the hollow mold column 22.

[0049] When the present solution is working, after the metal powder is injected into the hollow mold column 22 by the movable powder injector 7, the pressurizing device 4 works to pressurize the powder in the hollow mold column 22 in the pressing unit 5. During the pressurizing process, the electromagnet 54 can be controlled to work so that the pressurizing block 52 can compact the metal powder in the hollow mold column 22 by multiple vibrations when punching it.

[0050] The specific working process of the electromagnet 54 is as follows: when the pressure block 52 is driven to complete a pressure forming work, the pressure block 52 is driven to rise a set distance, and at this time, the pressure block 52 is still located in the hollow mold column 22;

[0051] Then, the electromagnet 54 is turned on to make the pressure block 52 repel the electromagnet 54, so that the pressure block 52 pressurizes the metal powder again. After the electromagnet 54 is turned off, the pressure block 52 is reset by the action of the spring telescopic column 53. After the pressure block 52 is reset, the above steps are repeated to achieve the purpose of intermittently turning on and off the electromagnet so that the pressure block 52 pressurizes the powder multiple times in a short time to ensure that the powder is compacted tightly.

[0052] During the stamping process, the temperature of the inner wall of the hollow mold column 22 is monitored by the temperature monitoring ring 3 when the spring telescopic column 53 is stamped. When the temperature of the inner wall of the hollow mold column 22 is higher than the set value during the stamping process, compensatory lubrication is performed. At this time, the pressing unit 5 is reset after completing the stamping work; after the parts are demolded, the pressure block 52 is controlled to descend and fit with the demolding module 24 and maintain the set pressure. The pressure block 52 and the demolding module 24 fit to ensure that the lubricating oil is not easy to penetrate into the end faces of both, so as to avoid the lubricating oil contaminating the subsequently injected mixed powder, and then adjust the displacement of the pressure block 52 and the demolding module 24 so that they are both moved to the auxiliary lubrication structure 6 (i.e., the lower barrel area of ​​the inner mold cylinder 222), and the side walls of the pressure block 52 and the demolding module 24 are sprayed with oil through the oil filling pipe 62; excess lubricating oil will flow downward and be discharged through the oil drain hole at the bottom of the positioning cylinder 221.

[0053] During the specific oil spray lubrication, the driving belt drives the rod sleeve 26 to rotate by controlling the stepper motor to rotate, thereby rotating the stripping module 24. At this time, the electromagnetic latch 55 on the pressure block 52 is reset. Under the interaction force between the stripping module 24 and the pressure block 52, the pressure block 52 rotates with the stripping module 24, so that the outer surfaces of the stripping module 24 and the pressure block 52 are fully sprayed and lubricated, ensuring that the outer surfaces of the stripping module 24 and the pressure block 52 are fully lubricated when the shapes are complex, and are easy to adapt to the lubrication of the pressure structure and the stripping structure when processing molds of various shapes;

[0054] After the spraying and lubrication work is completed, the stepper motor is controlled to work, so that the stripping module 24 rotates and resets, and the electromagnetic latch 55 resumes working to limit the pressure block 52.

[0055] Wear monitoring during solid-line stamping is realized, which facilitates lubrication replenishment of the stamping structure and demoulding structure.

[0056] Second implementation method:

[0057] Figure 8 As shown, the bottom end of the temperature monitoring ring 3 is fixedly connected with an oil detection unit 33, which includes an ultraviolet lamp and an image acquisition device. A pair of detection holes are opened in the middle of the hollow mold column 22, and the detection holes are filled with transparent resin. The detection holes are opened at the positioning cylinder 221 and the lower cylinder;

[0058] It also includes an auxiliary molding system, which includes a processor, and a control module, a data processing module, a monitoring module and a detection module are fixedly connected to the processor;

[0059] The control module is used to control the operation of the pressurizing device 4, the auxiliary lubrication structure 6 and the movable powder injector 7;

[0060] The monitoring module is used to control the temperature monitoring ring 3 to monitor the temperature change of the inner wall of the hollow mold column 22;

[0061] The detection module controls the oil pollution detection unit 33 to perform oil pollution detection;

[0062] The data processing module is used to process monitoring data and detection data and make judgments; an image recognition unit is provided in the data processing module;

[0063] The specific working process of oil pollution detection includes: after the pressure block 52 and the stripping module 24 have completed the relubrication, the stripping module 24 is controlled to move to the auxiliary lubrication structure 6, and then the upper surface of the stripping module 24 is fluorescently detected by ultraviolet lamps and image acquisition devices (using the relevant technology of fluorescence detection of lubricating oil in the prior art). If the range of the fluorescent spot in the identified image exceeds the set value, it is judged that lubricating oil is contained. At this time, the pressure block 52 is driven to move downward by a set distance, and the stripping module 24 rises to fit with the surface of the fixed plate 21. At this time, the movable powder injector 7 is controlled to move between the two and run back and forth, so that the brush layers at the upper and lower ends of the movable powder injector 7 clean the end faces of the stripping module 24 and the pressure block 52.

[0064] In summary, this solution realizes friction temperature monitoring, auxiliary lubrication and post-lubrication detection of powder metallurgy integrated molding dies, ensuring the stability of the molding process and product quality; when the mold is subjected to greater friction, lubrication can be carried out in time, and the end surface states of the stripping module 24 and the pressure block 52 can be detected after lubrication to ensure that excess lubricating oil does not affect the subsequent powder composition, and it is easy to adapt to the molding requirements of different metal powders, extend the service life of the mold, and reduce long-term operating costs.

[0065] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. Powder metallurgy integrated molding die, characterized by: It comprises a fixed frame (1), a molding die (2) is fixedly connected to the middle of the fixed frame (1); a movable powder injector (7) is slidably connected to the fixed frame (1); The molding die (2) comprises a fixing plate (21), a mounting hole is provided in the middle of the fixing plate (21), a hollow mold column (22) is clamped in the mounting hole, an electric telescopic rod (23) is provided on the lower side of the hollow mold column (22), a connecting rod (25) is rotatably connected to the power output end of the electric telescopic rod (23), the connecting rod (25) is inserted into the hollow mold column (22) and is fixedly connected to the stripping module (24), a rod sleeve (26) is sleeved on the connecting rod (25), and the rod sleeve (26) is rotatably connected to the bottom end of the hollow mold column (22); a stepping motor is installed in the fixing frame (1), and a transmission belt is connected between the power output end of the stepping motor and the rod sleeve (26); The upper end of the hollow mold column (22) is sleeved with a temperature monitoring ring (3), the temperature monitoring ring (3) comprises a fixing ring (31), and a plurality of evenly distributed temperature sensors (32) are fixedly connected to the fixing ring (31); The upper end of the fixed frame (1) is fixedly connected to a mounting plate matching the forming mold (2), the mounting plate is fixedly connected to a pressurizing device (4), the power output end of the pressurizing device (4) is fixedly connected to a pressing unit (5) matching the hollow mold column (22), the pressing unit (5) comprises a fixed column (51), a pressurizing block (52) matching the hollow mold column (22) is provided on the lower side of the fixed column (51), a spring telescopic column (53) is rotatably connected between the pressurizing block (52) and the fixed column (51), an electromagnet (54) matching the pressurizing block (52) is installed in the fixed column (51), a pair of electromagnetic clamping bolts (55) are fixedly connected to the inner wall of the lower end of the fixed column (51), and a fixing groove matching the movable end of the electromagnetic clamping bolt (55) is provided at the top of the pressurizing block (52); The lower end of the temperature monitoring ring (3) is fixedly connected to an auxiliary lubrication structure (6), the auxiliary lubrication structure (6) comprising an oil guide ring (61) sleeved on the hollow mold column (22), the output end of the oil guide ring (61) is fixedly connected to an oil injection pipe (62) inserted into the hollow mold column (22), and the top end of the oil injection pipe (62) is connected to a nozzle embedded in the inner wall of the hollow mold column (22).

2. The powder metallurgy integrated molding die according to claim 1, characterized in that: The hollow mold column (22) comprises a positioning cylinder (221) fixedly connected to the bottom end of the fixed plate (21), an inner mold cylinder (222) is detachably connected to the positioning cylinder (221), a plurality of oil discharge holes are provided at the bottom end of the positioning cylinder (221), the inner mold cylinder (222) comprises an upper cylinder body and a lower cylinder body, a mold cavity is provided in the upper cylinder body, and a plurality of through-holes matching the oil injection pipe (62) are provided on both the positioning cylinder (221) and the lower cylinder body.

3. The powder metallurgy integrated molding die according to claim 1, characterized in that: The upper end of the inner wall of the mold cylinder (222) is paved with a heat-conducting film, and the sensing end of the temperature sensor (32) is inserted into the positioning cylinder (221) and connected to the heat-conducting film.

4. The powder metallurgy integrated molding die according to claim 1, characterized in that: The movable powder injector (7) comprises a powder storage box with a powder injector, the powder storage box slides relative to the fixed frame (1), and brush layers are fixedly connected to the upper and lower ends of the movable powder injector (7).

5. The powder metallurgy integrated molding die according to claim 1, characterized in that: When the stripping module (24) is in the initial position, the upper surface of the stripping module (24) is located at the lower part of the detection area of ​​the temperature monitoring ring (3).

6. The powder metallurgy integrated molding die according to claim 1, characterized in that: A buffer is fixedly connected to the bottom end of the stripping module (24); when the stripping module (24) is pressed down, the maximum descending position of the stripping module (24) is located within the detection area of ​​the temperature monitoring ring (3).

7. The powder metallurgy integrated molding die according to claim 1, characterized in that: The bottom end of the temperature monitoring ring (3) is fixedly connected to an oil stain detection unit (33), the oil stain detection unit (33) comprising an ultraviolet lamp and an image acquisition device, and a pair of detection holes are opened in the middle of the hollow mold column (22), and the detection holes are filled with transparent resin.

8. The powder metallurgy integrated molding die according to claim 7, characterized in that: It also includes an auxiliary molding system, the auxiliary molding system includes a processor, and the processor is fixedly connected with a control module, a data processing module, a monitoring module and a detection module; The control module is used to control the operation of the pressurizing device (4), the auxiliary lubrication structure (6) and the movable powder injector (7); The monitoring module is used to control the temperature monitoring ring (3) to monitor the temperature change of the inner wall of the hollow mold column (22); The detection module controls the oil pollution detection unit (33) to perform oil pollution detection; The data processing module is used to process monitoring data and detection data and make judgments.

9. The powder metallurgy integrated molding die according to claim 7, characterized in that: The specific working process of the oil pollution detection comprises: after the pressure block (52) and the stripping module (24) have completed the supplementary lubrication, the stripping module (24) is controlled to move to the auxiliary lubrication structure (6), and then the upper surface of the stripping module (24) is fluorescently detected by an ultraviolet lamp and an image acquisition device. If the range of the fluorescent spot in the identified image exceeds a set value, it is judged that lubricating oil is contained. At this time, the pressure block (52) is driven to move downward by a set distance, and the stripping module (24) rises to fit the surface of the fixed plate (21). At this time, the movable powder injector (7) is controlled to move between the two and perform a reciprocating operation, so that the brush layers at the upper and lower ends of the movable powder injector (7) clean the cleaned end surfaces of the stripping module (24) and the pressure block (52).

Images