A powder metallurgy forming die for high-neck flange

Abstract

The present invention provides a high-neck flange powder metallurgy forming die, comprising a frame assembly and a split die base mechanism, the frame assembly comprising a lower bracket, a side bracket and an upper bracket; wherein the side bracket is installed on one side of the lower bracket; the present invention uses a lower ejector die mechanism to seal the bottom of the fixed die base and the movable die base, so that a cavity for accommodating metal powder is formed therein, and the lower ejector die mechanism can be used to perform a preliminary locking between the fixed die base and the movable die base, and then the metal powder is put between the fixed die base and the movable die base, and then the upper ejector die mechanism is used to perform a secondary locking between the fixed die base and the movable die base to prevent the fixed die base and the movable die base from being displaced during the pressing and forming process, and then the upper ejector die mechanism and the lower ejector die mechanism are used to provide downward and upward pressure to the metal powder respectively, so that the metal powder can be quickly formed in the cavity by using a two-way extrusion method, and the force is more uniform, thereby ensuring the quality after forming.

Description

Technical Field

[0001] The invention relates to a powder metallurgy forming die, in particular to a high-neck flange powder metallurgy forming die, and belongs to the technical field of powder metallurgy. Background Art

[0002] Powder metallurgy is a technology that uses metal powder or other powder materials to manufacture metal parts. It mainly includes pressing and sintering processes, and can produce parts with complex shapes and precise dimensions. Powder metallurgy molds are one of the important components of the powder metallurgy process. They are mainly used to press and cooperate with molds to process metal powder into the shape of the blank, which determines the geometry and size of the final product.

[0003] At present, most powder metallurgy molds adopt a top-down opening and closing design, which has the characteristics of fast mold opening, closing and demolding when processing parts such as gears, bearings, gear rings, flanges, etc. However, when processing high-neck flanges, since the high-neck flanges have a longer neck on the basis of traditional flanges, when using a powder metallurgy mold that opens and closes up and down for pressing and forming, it is necessary to increase the mold pressing and demolding stroke according to the length of the neck, which makes demolding more difficult. In addition, the one-way pressing method from top to bottom can easily lead to uneven force on the powder, which affects the quality of the high-neck flange after forming.

[0004] The Chinese patent, entitled "A Powder Metallurgy Gear Forming Die and Forming Process" (patent number ZL202410404880.2), discloses a powder metallurgy forming die technology. However, although the die can adjust the depth of the gear die groove to quickly adjust the thickness and quality of the finished gear, its pressing method is the same as that of traditional powder metallurgy dies. Although the thickness of the pressed workpiece can be adjusted, it cannot meet the neck length requirements of the high-neck flange.

[0005] The Chinese patent title is "A Bidirectional Warm Extrusion Molding Die" (patent number ZL201610218264.3), which discloses a bidirectional warm extrusion molding technology. However, although the die can ensure the density and pressing strength of metal powder metallurgy materials by adopting a bidirectional hot extrusion molding method, the opening and closing method of the die is still the same as that of a traditional die, and it is impossible to quickly demold the formed high-neck flange. For this reason, a high-neck flange powder metallurgy molding die is proposed. Summary of the Invention

[0006] In view of this, the present invention provides a powder metallurgy forming die for a high-neck flange to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial choice.

[0007] The technical solution of the embodiment of the present invention is achieved as follows: a high-neck flange powder metallurgy forming die, comprising a frame assembly and a split die base mechanism, wherein the frame assembly comprises a lower bracket, a side bracket and an upper bracket;

[0008] The side bracket is mounted on one side of the lower bracket, the split mold base mechanism is mounted on the top of the side bracket, the upper bracket is mounted on one side of the top of the split mold base mechanism, the inner side wall of the lower bracket is mounted with a flip unloading mechanism, the middle part of the inner side wall of the flip unloading mechanism is mounted with a lower ejection mold mechanism, the middle part of the inner side wall of the upper bracket is mounted with an upper ejection mold mechanism, and one side of the split mold base mechanism is mounted with a mold opening and closing drive mechanism;

[0009] Wherein, the split die base mechanism includes a fixed die base and a movable die base, and the die opening and closing drive mechanism includes a third hydraulic cylinder;

[0010] The fixed die base is mounted on the upper surface of the side bracket, the movable die base is hinged to one side of the fixed die base, and the third hydraulic cylinder is provided between the fixed die base and the movable die base for cooperating with the fixed die base and the movable die base to perform lateral mold opening;

[0011] The lower ejection mold mechanism and the upper ejection mold mechanism are used to respectively perform the primary and secondary locking of the fixed mold base and the movable mold base after mold closing, and provide upward and downward pressure for the metal powder.

[0012] Further preferably, the split mold base mechanism further includes an inner mold cavity and a plurality of lower locking holes;

[0013] The inner mold cavity is opened on a side adjacent to the fixed mold base and the movable mold base, and a plurality of lower locking holes are opened on the bottom of the inner side walls of the fixed mold base and the movable mold base respectively.

[0014] Further preferably, the upper mold mechanism includes a second hydraulic cylinder, a die-casting frame, a spring, a slide plate, a plurality of locking pins and a plurality of upper locking holes;

[0015] In which, the second hydraulic cylinder is installed in the middle of the upper surface of the upper bracket, the bottom of the outer wall of the die-casting frame is slidably connected to the inner wall of the inner mold cavity, the top of the die-casting frame is fixedly connected to the piston rod of the second hydraulic cylinder, the slide plate is slidably connected to the outer wall of the die-casting frame, the spring is fixedly connected between the die-casting frame and the slide plate, several locking pins are fixedly connected to the bottom of the lower bracket, and several upper locking holes are respectively opened on the upper surfaces of the fixed mold base and the movable mold base, and the outer wall of the locking pin is slidably connected to the inner wall of the upper locking hole.

[0016] Further preferably, the turnover unloading mechanism includes a reduction motor, a turnover plate frame and a mounting slot;

[0017] Among them, the reduction motor is installed on one side of the lower bracket, one end of the flip plate frame is fixedly connected to the output shaft of the reduction motor, and the other end of the flip plate frame is rotatably connected to the inner wall of the lower bracket, and the mounting groove is opened in the middle of the lower surface of the flip plate frame.

[0018] Further preferably, the lower ejection mold mechanism includes a first hydraulic cylinder, an inner mold core and two guide connecting rods;

[0019] Among them, the first hydraulic cylinder is installed on the inner wall of the installation groove, one end of the first hydraulic cylinder passes through the inner wall of the flip plate frame, the inner mold core is installed on one end of the piston rod of the first hydraulic cylinder, the outer walls of the two guide connecting rods are slidingly connected to the inner wall of the flip plate frame, and the tops of the two guide connecting rods are fixedly connected to the bottom of the inner mold core.

[0020] Further preferably, the inner mold core is composed of a core plate, a plurality of core pins and a core column;

[0021] Among them, the core plate is fixedly connected to one end of the piston rod of the first hydraulic cylinder, the core column is arranged in the middle of the upper surface of the core plate, the inner wall of the die-casting frame is slidably connected to the outer wall of the core column, and several core pins are arranged in a ring on the upper surface of the core plate, and the outer wall of the core pin is slidably connected to the inner wall of the lower locking hole. The core plate, core pin and core column are an integrally formed structure, and the material is breathable steel.

[0022] Further preferably, the mold opening and closing drive mechanism further includes a connecting frame and a connecting column;

[0023] Among them, the connecting frame is fixedly connected to one side of the movable mold base, one end of the piston rod of the third hydraulic cylinder is hinged to the middle of the inner wall of the connecting frame, the connecting column is fixedly connected to one side of the inner wall of the fixed mold base, and the other end of the third hydraulic cylinder is hinged to the middle of the outer wall of the connecting column.

[0024] Further preferably, a powder conveying mechanism is installed on one side of the fixed die base, and the powder conveying mechanism includes a material storage box, a material conveying pipe, a driving motor and a dragon plate;

[0025] In which, the material storage box is fixedly connected to one side of the upper surface of the fixed mold base, the material delivery pipe is fixedly connected to the top of the inner wall of the fixed mold base, one end of the material delivery pipe is connected to the inner mold cavity, the drive motor is installed at the other end of the material delivery pipe, the bottom of the material storage box is connected to the top of the outer wall of the material delivery pipe, the output shaft of the drive motor passes through the inner wall of the material delivery pipe, and one end of the dragon piece is fixedly connected to the output shaft of the drive motor.

[0026] Further preferably, a material level sensor is installed on the top of the inner wall of the fixed mold base and the movable mold base, a light-transmitting sheet is provided on one side of the material level sensor, an electric control box is installed on one side of the lower bracket, a central controller is installed in the middle of the inner wall of the electric control box, and a relay is installed at the bottom of the inner wall of the electric control box.

[0027] Further preferably, a cover plate is hinged on one side of the upper surface of the storage box, a side support plate is fixedly connected to one side of the side bracket, and the bottom of the movable mold base is slidably connected to the upper surface of the side support plate.

[0028] The embodiment of the present invention adopts the above technical solution, which has the following advantages:

[0029] 1. The present invention uses a lower ejection mold mechanism to seal the bottom of the fixed mold base and the movable mold base, thereby forming a cavity for accommodating metal powder. The lower ejection mold mechanism can be used to preliminarily lock the fixed mold base and the movable mold base, and then metal powder is put between the fixed mold base and the movable mold base. The upper ejection mold mechanism is then used to perform a secondary locking between the fixed mold base and the movable mold base to prevent the fixed mold base and the movable mold base from displacement during the pressing and molding process. The upper ejection mold mechanism and the lower ejection mold mechanism are then used to provide downward and upward pressure to the metal powder respectively, so that the metal powder can be quickly molded in the cavity by using a two-way extrusion method, and the force is more uniform, thereby ensuring the quality after molding.

[0030] 2. The present invention utilizes the lower ejection mold mechanism and the upper ejection mold mechanism to release the lock between the fixed mold base and the movable mold base, and then drives the movable mold base to move through the third hydraulic cylinder to perform a lateral mold opening operation, and then drives the lower ejection mold mechanism to flip as a whole through the flipping and unloading mechanism, so as to remove the formed high-neck flange blank from the fixed mold base and transfer it to the unloading area, thereby improving the demolding and unloading efficiency.

[0031] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0033] Figure 1 It is a structural diagram of the present invention;

[0034] Figure 2 It is a schematic cross-sectional structural diagram of the present invention from a first viewing angle;

[0035] Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure of area A;

[0036] Figure 4 is a schematic cross-sectional structural diagram of the present invention from a second viewing angle;

[0037] Figure 5 Schematic diagram of the cross-sectional structure of the fixed die base and the movable die base of the present invention;

[0038] Figure 6 is an axonometric view of the side bracket of the present invention;

[0039] Figure 7 is an axonometric view of the lower bracket of the present invention;

[0040] Figure 8 This is an isometric view of the fixed die base of the present invention;

[0041] Figure 9 It is a schematic cross-sectional structural diagram of the electric control box of the present invention.

[0042] Figure numerals: 1, frame assembly; 2, split mold base mechanism; 3, lower ejector mold mechanism; 4, upper ejector mold mechanism; 5, flip unloading mechanism; 6, powder conveying mechanism; 8, mold opening and closing drive mechanism; 101, lower bracket; 102, side bracket; 103, upper bracket; 201, fixed mold base; 202, movable mold base; 203, inner mold cavity; 204, lower locking hole; 301, first hydraulic cylinder; 302, inner mold core; 303, guide connecting rod; 321, mold core plate; 322, mold core pin; 323, mold core column; 401, first Second hydraulic cylinder; 402, die-casting frame; 403, spring; 404, slide plate; 405, locking pin; 406, upper locking hole; 501, reduction motor; 502, flip plate frame; 503, mounting slot; 601, storage box; 602, feed pipe; 603, drive motor; 604, dragon plate; 71, material level sensor; 72, light-transmitting plate; 73, electric control box; 74, central controller; 75, relay; 76, cover plate; 77, side support plate; 801, connecting frame; 802, third hydraulic cylinder; 803, connecting column. DETAILED DESCRIPTION

[0043] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are to be considered as illustrative in nature and not restrictive.

[0044] It should be noted that the terms "first," "second," "symmetrical," and "array" are used solely for descriptive and positional purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features being referred to. Therefore, limitations on features such as "first" and "symmetrical" may explicitly or implicitly include one or more of these features. Similarly, when features are not limited in quantity using words such as "two" or "three," it should be noted that these features also explicitly or implicitly include one or more of these features.

[0045] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0046] like Figures 1-9 As shown, an embodiment of the present invention provides a high-neck flange powder metallurgy forming die, comprising a frame assembly 1 and a split die base mechanism 2, wherein the frame assembly 1 comprises a lower bracket 101, a side bracket 102 and an upper bracket 103;

[0047] The side bracket 102 is mounted on one side of the lower bracket 101, the split die base mechanism 2 is mounted on the top of the side bracket 102, the upper bracket 103 is mounted on one side of the top of the split die base mechanism 2, the inner side wall of the lower bracket 101 is mounted with a flip unloading mechanism 5, the middle part of the inner side wall of the flip unloading mechanism 5 is mounted with a lower ejection die mechanism 3, the middle part of the inner side wall of the upper bracket 103 is mounted with an upper ejection die mechanism 4, and one side of the split die base mechanism 2 is mounted with a die opening and closing drive mechanism 8;

[0048] The split mold base mechanism 2 includes a fixed mold base 201, a movable mold base 202, an inner mold cavity 203 and a plurality of lower locking holes 204, and the mold opening and closing drive mechanism 8 includes a connecting frame 801, a third hydraulic cylinder 802 and a connecting column 803;

[0049] Among them, the fixed mold base 201 is installed on the upper surface of the side bracket 102, the movable mold base 202 is hinged to one side of the fixed mold base 201, and the third hydraulic cylinder 802 is set between the fixed mold base 201 and the movable mold base 202, which is used to cooperate with the fixed mold base 201 and the movable mold base 202 to perform lateral mold opening. The inner mold cavity 203 is opened on the side adjacent to the fixed mold base 201 and the movable mold base 202, and a plurality of lower locking holes 204 are respectively opened on the inner side of the fixed mold base 201 and the movable mold base 202. At the bottom of the wall, one side of the side bracket 102 is fixedly connected to the side support plate 77, the bottom of the movable mold base 202 is slidably connected to the upper surface of the side support plate 77, the connecting frame 801 is fixedly connected to one side of the movable mold base 202, one end of the piston rod of the third hydraulic cylinder 802 is hinged to the middle of the inner side wall of the connecting frame 801, the connecting column 803 is fixedly connected to one side of the inner side wall of the fixed mold base 201, and the other end of the third hydraulic cylinder 802 is hinged to the middle of the outer side wall of the connecting column 803;

[0050] The lower ejection mold mechanism 3 and the upper ejection mold mechanism 4 are used to respectively perform primary and secondary locking on the fixed mold base 201 and the movable mold base 202 after mold closing, and provide upward and downward pressure on the metal powder.

[0051] In one embodiment, the upper mold mechanism 4 includes a second hydraulic cylinder 401, a die-casting frame 402, a spring 403, a slide plate 404, a plurality of locking pins 405 and a plurality of upper locking holes 406;

[0052] Among them, the second hydraulic cylinder 401 is installed in the middle of the upper surface of the upper bracket 103, the bottom of the outer wall of the die-casting frame 402 is slidingly connected to the inner wall of the inner mold cavity 203, the top of the die-casting frame 402 is fixedly connected to the piston rod of the second hydraulic cylinder 401, the slide plate 404 is slidingly connected to the outer wall of the die-casting frame 402, the spring 403 is fixedly connected between the die-casting frame 402 and the slide plate 404, a number of locking pins 405 are fixedly connected to the bottom of the lower bracket 101, a number of upper locking holes 406 are respectively opened on the upper surfaces of the fixed mold base 201 and the movable mold base 202, and the outer wall of the locking pin 405 is slidingly connected to the inner wall of the upper locking hole 406.

[0053] The die-casting frame 402 is driven to move by the piston rod of the second hydraulic cylinder 401. The moving die-casting frame 402 is inserted into the inner mold cavity 203 and the slide plate 404 is driven to move by the spring 403. Then, the moving slide plate 404 drives the locking pin 405 to be inserted into the upper locking hole 406 to lock the top of the fixed mold base 201 and the movable mold base 202. Then, the die-casting frame 402 drives the spring 403 to be compressed so that the bottom of the die-casting frame 402 can be smoothly inserted into the inner mold cavity 203.

[0054] In one embodiment, the flip unloading mechanism 5 includes a reduction motor 501, a flip plate frame 502 and a mounting slot 503;

[0055] Among them, the reduction motor 501 is installed on one side of the lower bracket 101, one end of the flip plate frame 502 is fixedly connected to the output shaft of the reduction motor 501, and the other end of the flip plate frame 502 is rotatably connected to the inner wall of the lower bracket 101, and the installation groove 503 is opened in the middle of the lower surface of the flip plate frame 502.

[0056] The output shaft of the reduction motor 501 drives the flip plate frame 502 to rotate, and the rotating flip plate frame 502 drives the first hydraulic cylinder 301 to move. The moving first hydraulic cylinder 301 uses the inner mold core 302 to drive the high-neck flange blank to move, so as to remove the high-neck flange blank from the fixed mold base 201 and transfer it to the unloading area on one side of the mold by flipping it.

[0057] In one embodiment, the lower ejection mold mechanism 3 includes a first hydraulic cylinder 301, an inner mold core 302 and two guide connecting rods 303;

[0058] Among them, the first hydraulic cylinder 301 is installed on the inner wall of the installation groove 503, one end of the first hydraulic cylinder 301 passes through the inner wall of the flip plate frame 502, the inner mold core 302 is installed on one end of the piston rod of the first hydraulic cylinder 301, and the outer walls of the two guide connecting rods 303 are slidingly connected to the inner wall of the flip plate frame 502, and the tops of the two guide connecting rods 303 are fixedly connected to the bottom of the inner mold core 302.

[0059] The inner mold core 302 is driven to move by the first hydraulic cylinder 301 so that the position of the inner mold core 302 can be adjusted according to actual needs, and the inner mold core 302 can be used to seal the bottom of the fixed mold base 201 and the movable mold base 202, so that a cavity for accommodating metal powder is formed between the fixed mold base 201 and the movable mold base 202.

[0060] In one embodiment, the inner core mold 302 is composed of a core plate 321, a plurality of core pins 322 and a core column 323;

[0061] Among them, the core plate 321 is fixedly connected to one end of the piston rod of the first hydraulic cylinder 301, the core column 323 is provided in the middle of the upper surface of the core plate 321, the inner side wall of the die-casting frame 402 is slidably connected to the outer side wall of the core column 323, and a plurality of core pins 322 are arranged in a ring on the upper surface of the core plate 321, and the outer side wall of the core pin 322 is slidably connected to the inner side wall of the lower locking hole 204. The core plate 321, the core pin 322 and the core column 323 are an integrally formed structure and are made of breathable steel;

[0062] By utilizing the core plate 321, core pin 322 and core column 323 made of breathable steel, the air in the inner mold cavity 203 can be discharged during the pressing process to prevent the air from interfering with the pressing effect. By utilizing the core plate 321 to drive the core pin 322 to be inserted into the lower locking hole 204, the fixed mold base 201 and the movable mold base 202 are locked.

[0063] In one embodiment, a powder conveying mechanism 6 is installed on one side of the fixed mold base 201, and the powder conveying mechanism 6 includes a storage box 601, a conveying pipe 602, a driving motor 603 and a dragon piece 604;

[0064] Among them, the material storage box 601 is fixedly connected to one side of the upper surface of the fixed mold base 201, the material delivery pipe 602 is fixedly connected to the top of the inner wall of the fixed mold base 201, one end of the material delivery pipe 602 is connected to the inner mold cavity 203, and the drive motor 603 is installed at the other end of the material delivery pipe 602. The bottom of the material storage box 601 is connected to the top of the outer wall of the material delivery pipe 602, the output shaft of the drive motor 603 passes through the inner wall of the material delivery pipe 602, one end of the dragon piece 604 is fixedly connected to the output shaft of the drive motor 603, and a cover plate 76 is hinged on one side of the upper surface of the material storage box 601.

[0065] The output shaft of the driving motor 603 drives the dragon piece 604 to rotate, and the rotating dragon piece 604 pushes the metal powder that falls from the storage box 601 into the feed pipe 602 into the inner mold cavity 203, so that the cavity can be filled with the powder; the storage box 601 is used to store the metal powder raw material, and directly introduces it into the feed pipe 602 under the action of gravity, and the cover plate 76 is used to control the opening and closing of one side of the storage box 601.

[0066] In one embodiment, a material level sensor 71 is installed on the top of the inner wall of the fixed mold base 201 and the movable mold base 202, a light-transmitting sheet 72 is provided on one side of the material level sensor 71, an electric control box 73 is installed on one side of the lower bracket 101, a central controller 74 is installed in the middle of the inner wall of the electric control box 73, and a relay 75 is installed at the bottom of the inner wall of the electric control box 73.

[0067] The material level data of the metal powder in the inner mold cavity 203 is monitored by using the material level sensor 71, and the data collected by the material level sensor 71 is received by the central controller 74. When the material level of the metal powder reaches the preset value, the central controller 74 uses the relay 75 to control the drive motor 603 to control the amount of metal powder filling; the transparent sheet 72 is provided to provide protection for the material level sensor 71; the material level sensor 71 is a laser level meter or a radar level meter.

[0068] When the present invention is working: first, the piston rod of the third hydraulic cylinder 802 drives the connecting frame 801 to move, and the moving connecting frame 801 drives the movable mold base 202 to fit with one side of the fixed mold base 201 to perform the mold closing operation.

[0069] When the mold closing is completed, the piston rod of the first hydraulic cylinder 301 drives the core plate 321 to move, and the moving core plate 321 drives the core pin 322, the core column 323 and the guide link 303 to move. The moving guide link 303 guides the core plate 321 by sliding in the flip plate frame 502. The moving core pin 322 and the core column 323 partially slide into the lower locking hole 204 and the inner mold cavity 203 respectively. The core pin 322 that slides into the lower locking hole 204 is used to lock the fixed mold base 201 and the movable mold base 202. When the outer wall portion of the core plate 321 fits with the inner wall of the fixed mold base 201 and the movable mold base 202, one action is completed, and a cavity for accommodating metal powder is formed in the inner mold cavity 203.

[0070] When one action of the first hydraulic cylinder 301 is completed, the output shaft of the drive motor 603 drives the dragon piece 604 to rotate, and the rotating dragon piece 604 pushes the metal powder that falls from the storage box 601 into the feed pipe 602 into the inner mold cavity 203, so that the cavity can be filled with the powder. Then the material level of the metal powder in the inner mold cavity 203 is detected by the material level sensor 71, and the data detected by the material level sensor 71 is received by the central controller 74. When the detection data of the material level sensor 71 in the movable mold base 202 is affected by the accumulation of metal powder, the filling is completed, and the drive motor 603 is turned off by the relay 75 through the central controller 74, and the drive motor 603 is started again to drive the dragon piece 604 to rotate in the opposite direction, so as to retract the metal powder close to the side of the inner mold cavity 203 into the feed pipe 602, so as to prevent the metal powder from continuously flowing out of the feed pipe 602 during the pressing or mold opening process.

[0071] When the metal powder is filled, the die casting frame 402 is driven to move by the piston rod of the second hydraulic cylinder 401. The moving die casting frame 402 is inserted into the inner mold cavity 203 and the spring 403 is used to drive the slide plate 404 to move. When the moving slide plate 404 drives the locking pin 405 to be inserted into the upper locking hole 406, the slide plate 404, the locking pin 405 and the locking hole 406 are used to perform a secondary locking between the fixed mold base 201 and the movable mold base 202 to increase the stability of the fixed mold base 201 and the movable mold base 202 and prevent the fixed mold base 201 and the movable mold base 202 from positional deviation during the pressing process. When the movement of the locking pin 405 and the slide plate 404 is blocked, the die casting frame 402 is moved by the movement of the locking pin 405 and the slide plate 404. The frame 402 drives the spring 403 to be compressed, and the continuously moving die-casting frame 402 is used to provide downward pressure for the metal powder in the inner mold cavity 203, so that the extruded metal powder can be used to fully fill the cavity between the mold core plate 321, the fixed mold base 201 and the movable mold base 202 to prevent the occurrence of hollowing. When the action of the second hydraulic cylinder 401 is completed, the first hydraulic cylinder 301 is started again and then acts a second time. The piston rod of the first hydraulic cylinder 301 pushes the inner mold core 302 to be fully inserted into the inner mold cavity 203 to provide upward pressure for the metal powder, so as to cooperate with the fixed mold base 201 and the movable mold base 202 to press the metal powder into a high-neck flange blank.

[0072] After the high-neck flange blank is press-formed, the die-casting frame 402 is driven to reset as a whole by the second hydraulic cylinder 401 to release the lock on the top of the fixed mold base 201 and the movable mold base 202, and then the inner mold core 302 is driven downward by the piston rod of the first hydraulic cylinder 301 to separate the mold core pin 322 from the lower locking hole 204, thereby releasing the lock on the bottom of the fixed mold base 201 and the movable mold base 202. Then, the third hydraulic cylinder 802 uses the connecting frame 801 to drive the movable mold base 202 to move around one side of the fixed mold base 201 to perform the mold opening operation, so that the high-neck flange blank after press-forming is exposed.

[0073] When the mold opening operation is completed, the output shaft of the reduction motor 501 drives the flip plate frame 502 to rotate, and the rotating flip plate frame 502 drives the first hydraulic cylinder 301 to move. The moving first hydraulic cylinder 301 uses the inner mold core 302 to drive the high-neck flange blank to move, so as to take the high-neck flange blank out of the fixed mold base 201 and transfer it to the unloading area on one side of the mold by flipping it. Then, the high-neck flange blank on the inner mold core 302 can be directly removed to complete the unloading operation.

[0074] The side support plate 77 is used to provide support for the bottom of the movable mold base 202, and the storage box 601 is used to store metal powder raw materials and directly introduce them into the feed pipe 602 under the action of gravity. The cover plate 76 is used to control the opening and closing of one side of the storage box 601 so that the metal powder raw materials can be replenished according to demand.

[0075] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A powder metallurgy forming die for a high-neck flange, comprising a frame assembly (1) and a split die base mechanism (2), characterized in that: The frame assembly (1) comprises a lower bracket (101), a side bracket (102) and an upper bracket (103); The side bracket (102) is mounted on one side of the lower bracket (101), the split mold base mechanism (2) is mounted on the top of the side bracket (102), the upper bracket (103) is mounted on one side of the top of the split mold base mechanism (2), the inner side wall of the lower bracket (101) is mounted with a flip unloading mechanism (5), the middle part of the inner side wall of the flip unloading mechanism (5) is mounted with a lower top mold mechanism (3), the middle part of the inner side wall of the upper bracket (103) is mounted with an upper top mold mechanism (4), and one side of the split mold base mechanism (2) is mounted with a mold opening and closing drive mechanism (8); The split mold base mechanism (2) comprises a fixed mold base (201), a movable mold base (202), an inner mold cavity (203) and a plurality of lower locking holes (204); the mold opening and closing drive mechanism (8) comprises a connecting frame (801), a third hydraulic cylinder (802) and a connecting column (803); The fixed die base (201) is mounted on the upper surface of the side bracket (102), the movable die base (202) is hinged to one side of the fixed die base (201), the inner die cavity (203) is opened on the side adjacent to the fixed die base (201) and the movable die base (202), a plurality of lower locking holes (204) are respectively opened on the bottom of the inner side wall of the fixed die base (201) and the movable die base (202), the third hydraulic cylinder (802) is provided on the fixed die base (201) and the movable die base (202), and the inner die cavity (203) is opened on the side adjacent to the fixed die base (201) and the movable die base (202). 02), used for cooperating with the fixed die base (201) and the movable die base (202) to perform lateral mold opening, the connecting frame (801) is fixedly connected to one side of the movable die base (202), one end of the piston rod of the third hydraulic cylinder (802) is hinged to the middle of the inner side wall of the connecting frame (801), the connecting column (803) is fixedly connected to one side of the inner side wall of the fixed die base (201), and the other end of the third hydraulic cylinder (802) is hinged to the middle of the outer side wall of the connecting column (803); The lower ejection mold mechanism (3) and the upper ejection mold mechanism (4) are used to respectively perform primary and secondary locking on the fixed mold base (201) and the movable mold base (202) after mold closing, and provide upward and downward pressure on the metal powder.

2. The powder metallurgy forming die for the high-neck flange according to claim 1, characterized in that: The upper die mechanism (4) comprises a second hydraulic cylinder (401), a die-casting frame (402), a spring (403), a slide plate (404), a plurality of locking pins (405) and a plurality of upper locking holes (406); The second hydraulic cylinder (401) is installed on the middle part of the upper surface of the upper bracket (103), the bottom of the outer wall of the die-casting frame (402) is slidably connected to the inner wall of the inner mold cavity (203), the top of the die-casting frame (402) is fixedly connected to the piston rod of the second hydraulic cylinder (401), the slide plate (404) is slidably connected to the outer wall of the die-casting frame (402), the spring (403) is fixedly connected between the die-casting frame (402) and the slide plate (404), a plurality of the locking pins (405) are fixedly connected to the bottom of the lower bracket (101), a plurality of the upper locking holes (406) are respectively opened on the upper surfaces of the fixed mold base (201) and the movable mold base (202), and the outer wall of the locking pin (405) is slidably connected to the inner wall of the upper locking hole (406).

3. The powder metallurgy forming die for the high-neck flange according to claim 2, characterized in that: The turnover unloading mechanism (5) comprises a reduction motor (501), a turnover plate frame (502) and a mounting groove (503); The reduction motor (501) is mounted on one side of the lower bracket (101), one end of the flip plate frame (502) is fixedly connected to the output shaft of the reduction motor (501), the other end of the flip plate frame (502) is rotatably connected to the inner wall of the lower bracket (101), and the mounting groove (503) is opened in the middle of the lower surface of the flip plate frame (502).

4. The powder metallurgy forming die for a high-neck flange according to claim 3, characterized in that: The lower ejection mold mechanism (3) comprises a first hydraulic cylinder (301), an inner mold core (302) and two guide connecting rods (303); The first hydraulic cylinder (301) is mounted on the inner side wall of the mounting groove (503), one end of the first hydraulic cylinder (301) passes through the inner side wall of the flip plate frame (502), the inner mold core (302) is mounted on one end of the piston rod of the first hydraulic cylinder (301), the outer side walls of the two guide connecting rods (303) are slidably connected to the inner side wall of the flip plate frame (502), and the tops of the two guide connecting rods (303) are fixedly connected to the bottom of the inner mold core (302).

5. The powder metallurgy forming die for the high-neck flange according to claim 4, characterized in that: The inner mold core (302) is composed of a mold core plate (321), a plurality of mold core pins (322) and a mold core column (323); The core plate (321) is fixedly connected to one end of the piston rod of the first hydraulic cylinder (301), the core column (323) is arranged in the middle of the upper surface of the core plate (321), the inner wall of the die-casting frame (402) is slidably connected to the outer wall of the core column (323), and a plurality of core pins (322) are arranged in a ring on the upper surface of the core plate (321), and the outer wall of the core pins (322) is slidably connected to the inner wall of the lower locking hole (204).

6. The powder metallurgy forming die for a high-neck flange according to claim 1, characterized in that: A powder conveying mechanism (6) is installed on one side of the fixed die base (201), and the powder conveying mechanism (6) includes a material storage box (601), a material conveying pipe (602), a driving motor (603) and a dragon plate (604); The material storage box (601) is fixedly connected to one side of the upper surface of the fixed mold base (201), the material delivery pipe (602) is fixedly connected to the top of the inner wall of the fixed mold base (201), one end of the material delivery pipe (602) is connected to the inner mold cavity (203), the drive motor (603) is installed at the other end of the material delivery pipe (602), the bottom of the material storage box (601) is connected to the top of the outer wall of the material delivery pipe (602), the output shaft of the drive motor (603) passes through the inner wall of the material delivery pipe (602), and one end of the dragon piece (604) is fixedly connected to the output shaft of the drive motor (603).

7. The powder metallurgy forming die for a high-neck flange according to claim 1, characterized in that: A material level sensor (71) is installed on the top of the inner side wall of each of the fixed mold base (201) and the movable mold base (202), and a light-transmitting sheet (72) is provided on one side of the material level sensor (71). An electric control box (73) is installed on one side of the lower bracket (101), a central controller (74) is installed in the middle of the inner side wall of the electric control box (73), and a relay (75) is installed at the bottom of the inner side wall of the electric control box (73).

8. The powder metallurgy forming die for a high-neck flange according to claim 6, characterized in that: A cover plate (76) is hingedly connected to one side of the upper surface of the material storage box (601), a side support plate (77) is fixedly connected to one side of the side bracket (102), and the bottom of the movable mold base (202) is slidably connected to the upper surface of the side support plate (77).

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