Numerical control type metal powder compression molding device

Abstract

The invention discloses a numerical control type metal powder compression molding device, and relates to the technical field of compression molding. The problem of machining efficiency is solved. The forming die and the portal frame are fixedly installed on the outer wall of the top of the base, a feeding mechanism is arranged on one side of the top of the forming die, the same set of pressing forming mechanism is arranged on the inner wall of the other side of the forming die and below the portal frame, and a discharging mechanism is arranged on the side wall of the forming die; and the pressing forming mechanism comprises a pressing die, a top die and a female die fixedly embedded in the inner wall of the forming die, the top die is movably matched with the interior of the female die, and the female die is of a cavity structure. The top die serving as a bottom support is connected with the hollow cylinder through the cavity pipe, and the gas control assembly is arranged at the bottom of the cavity pipe, so that after forming is finished, positive pressure provided by the gas control assembly is used for enabling the top die to ascend, metal materials are jacked, follow-up material taking is facilitated, and the machining efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of pressing and forming, and in particular to a numerically controlled metal powder pressing and forming device. Background Art

[0002] Powder metallurgy is the process of turning metal into powder, and then using a mold to apply high pressure and a temperature below the melting point to the metal powder, so that the powders adhere to each other to achieve a molding effect. Compared with traditional metal molding processes, it has low energy consumption and low cost.

[0003] After searching, the Chinese patent publication number CN210877548U discloses a powder metallurgy pressing mold, including a support frame, a first connecting seat, a top plate, a female mold, an outer upper mold, a slidable shielding cover structure, an adsorbable collection box structure, a retractable shielding plate structure, a pressing device, a fixed seat, an inner upper mold, a hollow section, an outer lower mold, an inner lower mold and a forming blank. The first connecting seat is bolted to the middle position of the inner bottom end of the support frame; the top plate is bolted to the upper left part of the support frame; the female mold is bolted to the middle position of the upper end of the first connecting seat; the outer upper mold is bolted to the middle position of the lower end of the fixed seat; the slidable shielding cover structure is installed on the outer wall of the outer upper mold; the adsorbable collection box structure is installed on the upper end of the female mold.

[0004] The above patent has the following shortcomings: it uses the inner and outer lower molds and the pressed blank to apply force and uses the plasticity of the female mold to achieve the pressing and molding of metal powder. However, after the pressing is completed, the formed metal cannot be taken out from the female mold, which makes the material removal more cumbersome and inefficient.

[0005] To this end, the present invention provides a numerically controlled metal powder pressing and forming device. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a numerically controlled metal powder pressing and forming device.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions: A numerically controlled metal powder pressing and forming device comprises a base, a forming die and a gantry fixedly mounted on the outer wall of the top of the base, A loading mechanism is arranged on one side of the top of the forming die, a same group of pressing and forming mechanisms are arranged on the inner wall of the other side of the forming die and below the gantry, and a unloading mechanism is arranged on the side wall of the forming die; The press forming mechanism comprises a pressing die, a top die and a female die fixedly embedded in the inner wall of the forming die, the top die is movably matched with the inside of the female die, and the female die is a cavity structure, a heating coil is arranged in the cavity of the female die, a lifting plate is fixedly installed on the top of the pressing die, the lifting plate is slidably matched with the inner side wall of the gantry, and a telescopic device 1 for driving the lifting plate to rise and fall is fixedly installed on the top of the gantry; A hollow cylinder is fixedly mounted on the bottom outer wall of the top mold, a cavity tube is movably connected to the inner wall of the hollow cylinder, the cavity tube is fixedly mounted on the top outer wall of the base, and a gas control component is arranged at the other end of the cavity tube.

[0008] Preferably: the gas control assembly includes a connecting pipe, a piston 1 and a cylinder body, the cylinder body is fixedly installed on the top lower surface of the gantry, the piston 1 is slidably fitted on the inner wall of the cylinder body, and the bottom of the piston 1 is connected to the upper surface of the lifting plate through a piston rod, one end of the connecting pipe is fixedly installed and connected to the cylinder body, and the other side of the connecting pipe is fixedly installed and connected to the bottom of the cavity tube.

[0009] Furthermore: a cleaning assembly is arranged on the outside of the hollow cylinder, and the cleaning assembly comprises a movable ring fixed to the outer wall of the hollow cylinder and a plurality of brush plates which are inclined and fixed to the outer wall of the movable ring in a circular array.

[0010] On the basis of the above-mentioned solution: a spiral groove is provided on the outer wall of the cavity tube, and the movable ring is movably limited and matched with the inner wall of the spiral groove through a limiting column inserted into the inner wall of the movable ring.

[0011] A better solution among the above-mentioned solutions is: the feeding mechanism includes a slider slidably connected to the upper surface of the forming mold and a support frame fixed to the top outer wall of the forming mold through support legs, the inner wall of the slider is provided with a transition material trough, the top of the support frame is fixedly installed with a material hopper, the inner wall of the support frame is rotatably connected to a roller through a wheel axle, and the inner wall of the roller is provided with a blind groove.

[0012] As a further solution of the present invention: a second retractor is fixedly mounted on the top outer wall of the forming die, and a retractable end of the second retractor is fixedly mounted on the side wall of the slider.

[0013] At the same time, the outer wall of the wheel shaft is connected with a blind groove through a key, and a rack is fixedly installed on the side wall of the sliding block, and the rack is meshed with the bottom of the gear.

[0014] As a preferred embodiment of the present invention: one side of the sliding block is rotatably connected with a "U"-shaped claw via a rotating shaft, and an inclined surface is arranged on the inner side of the "U"-shaped claw.

[0015] At the same time, the outer wall of the rotating shaft is connected to a reel through a key, and a torsion spring is buckled on the opposite side of the reel and the slider, and a twisted rope is wound around the reel, and the end of the twisted rope is fixed to the bottom outer wall of the support frame, and a guide ring for limiting the twisted rope is fixed to the side wall of the slider.

[0016] As a better solution of the present invention: the unloading mechanism includes a guide ramp block fixedly installed on the side wall of the forming mold and a material receiving box just placed on the top outer wall of the base, the lower end of the guide ramp block is rotatably connected to a buffer plate through a plate shaft, and the same spiral spring is buckled on the opposite side of the plate shaft and the guide ramp block.

[0017] The beneficial effects of the present invention are: 1. The present invention connects the top mold as the bottom support with the hollow cylinder by using a cavity tube, and a gas control component is provided at the bottom of the cavity tube. After the molding is completed, the positive pressure provided by the gas control component can be used to make the top mold rise, thereby lifting the metal material, facilitating the subsequent material removal and increasing the processing efficiency.

[0018] 2. The present invention sets a gas control component, and the gas control component controls the air pressure in the form of a "pneumatic cylinder" composed of a piston and a cylinder body, and then utilizes the displacement characteristics of the lifting plate during the pressing process, so that the power supply of positive pressure and negative pressure can be synchronized with the lifting plate. On the one hand, the synchronization of the device is increased and the control steps of each control node are simplified. On the other hand, the layout of the power source is simplified, which is convenient for volume optimization.

[0019] 3. The present invention, by setting a cleaning component, can clean the inner wall of the female mold after single molding through a brush plate, so as to prevent surface defects of subsequent molded products caused by the adhesion of metal powder, thereby improving the molding quality; and when the brush plate is cleaning, it is also limited by the limiting column and the spiral groove to realize rotation, thereby preventing cleaning dead corners and increasing the cleaning effect; at the same time, its rotational power comes from the lifting power of the material taking, which further increases the synchronization of the operation of the device.

[0020] 4. The present invention can realize a transitional automatic loading function by utilizing the sliding of the slider and the rotation of the blind groove, and the sliding of the slider and the rotation of the blind groove are linked by utilizing gears and gears, thereby increasing the synchronization of the device on the one hand and further reducing the power source layout on the other hand, which is convenient for volume optimization.

[0021] 5. The present invention, by setting a "U"-shaped claw, can rotate the round material after being formed, so that the inclined surface can be used to guide the material to slide down, thereby realizing the automatic material unloading function, and its structure is simple and the cost is low. In addition, the "U"-shaped claw is driven by the cooperation of the twisted rope and the reel, which further reduces the driving layout and increases synchronization.

[0022] 6. The present invention, by setting a guide ramp block, can guide the rolling molding material again, so that it can reliably fall into the receiving box for collection, and on this basis, a buffer plate is set at the opposite bottom end of the guide ramp block, and then the buffer plate is elastically supported by a spiral spring, so that the rolling molding material can be buffered to prevent damage caused by high-speed rolling and collision. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall front view structure of a CNC metal powder pressing and forming device proposed by the present invention; Figure 2 This is a schematic diagram of the overall cross-sectional structure of a CNC metal powder pressing and forming device proposed by the present invention; Figure 3 This is a schematic diagram of the enlarged structure of part A of a CNC metal powder pressing and forming device proposed by the present invention; Figure 4 A schematic diagram of the structure of a cleaning component of a CNC metal powder pressing and forming device proposed by the present invention; Figure 5 This is a schematic cross-sectional view of a feeding mechanism of a CNC metal powder pressing and forming device proposed by the present invention; Figure 6 A schematic diagram of the structure of a feeding mechanism of a CNC metal powder pressing and forming device proposed by the present invention; Figure 7 A schematic diagram of the partial structure of a feeding mechanism of a CNC metal powder pressing and forming device proposed by the present invention; Figure 8 A schematic diagram of the structure of a material unloading mechanism of a CNC metal powder pressing and forming device proposed by the present invention; Fig. 9 This is a schematic diagram of the cross-sectional structure of a buffer plate of a CNC metal powder pressing and forming device proposed by the present invention.

[0024] In the figure: 1-base, 2-forming mold, 3-feeding mechanism, 4-pressing molding mechanism, 5-unloading mechanism, 6-gantry, 7-female mold, 8-connecting pipe, 9-piston 1, 10-cylinder, 11-pressing mold, 12-retractor 1, 13-lifting plate, 14-cleaning component, 15-cavity tube, 16-hollow cylinder, 17-top mold, 18-heating coil, 19-brush plate, 20-movable ring, 21-limiting column, 22-spiral groove, 23- Slider, 24-transition trough, 25-retractor 2, 26-support frame, 27-hopper, 28-roller, 29-blind groove, 30-torsion spring, 31-rotating shaft, 32-reel, 33-inclined surface, 34-"U"-shaped claw, 35-guide ring, 36-twisted rope, 37-support leg, 38-rack, 39-gear, 40-axle, 41-plate shaft, 42-guide inclined surface block, 43-buffer plate, 44-material receiving box, 45-volute spring. DETAILED DESCRIPTION

[0025] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0026] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] Embodiment 1: A numerically controlled metal powder pressing and forming device, such as Figures 1 to 9 As shown, it includes a base 1 and a forming mold 2 and a gantry 6 fixed to the top outer wall of the base 1 by bolts, a loading mechanism 3 is arranged on one side of the top of the forming mold 2, the same group of pressing and forming mechanisms 4 are arranged on the inner wall of the other side of the forming mold 2 and below the gantry 6, and a unloading mechanism 5 is arranged on the side wall of the forming mold 2.

[0028] The pressing and forming mechanism 4 includes a pressing die 11, a top die 17 and a female die 7 fixedly embedded in the inner wall of the forming die 2, the top die 17 is movably fitted in the interior of the female die 7, and the female die 7 is a cavity structure, a heating coil 18 is arranged in the cavity of the female die 7, a lifting plate 13 is fixed to the top of the pressing die 11 by bolts, the lifting plate 13 is slidably fitted to the inner side wall of the gantry 6, and a telescopic device 12 for driving the lifting plate 13 to rise and fall is fixed to the top of the gantry 6 by bolts.

[0029] A hollow cylinder 16 is welded to the bottom outer wall of the top mold 17, and a cavity tube 15 is movably connected to the inner wall of the hollow cylinder 16. The cavity tube 15 is fixed to the top outer wall of the base 1 by bolts, and a gas control component is arranged at the other end of the cavity tube 15.

[0030] When the device is in use, negative pressure is first applied to the cavity tube 15 through the gas control component, and the top mold 17 is dropped to the bottom of the female mold 7 due to its own gravity and negative pressure, and then the inner cavity of the female mold 7 is filled with metal powder through the feeding mechanism 3, and then the lifting plate 13 is driven down through the telescopic device 12, and the die 11 is driven down at the same time, and the metal powder is extruded by the limit of the female mold 7 and the extrusion between the die 11 and the top mold 17. In the process of extrusion, the heating coil 18 is started to heat the metal powder, thereby forming it. After the forming is completed, the die 11 moves up, and the gas control component inputs positive pressure into the cavity tube 15, and the top mold 17 rises to eject the formed metal material.

[0031] The device connects the top mold 17 serving as the bottom support with the hollow cylinder 16 by means of the cavity tube 15, and a gas control component is provided at the bottom of the cavity tube 15. Thus, after the molding is completed, the positive pressure provided by the gas control component can be used to raise the top mold 17, thereby lifting the metal material, facilitating the subsequent material removal and increasing the processing efficiency.

[0032] To solve the synchronization problem; Figure 2 As shown, the gas control assembly includes a connecting pipe 8, a piston 9 and a cylinder body 10. The cylinder body 10 is fixed to the top lower surface of the gantry 6 by bolts. The piston 9 is slidably fitted on the inner wall of the cylinder body 10, and the bottom of the piston 9 is connected to the upper surface of the lifting plate 13 through a piston rod. One end of the connecting pipe 8 is welded and connected to the cylinder body 10, and the other side of the connecting pipe 8 is welded and connected to the bottom of the cavity tube 15.

[0033] When the lifting plate 13 descends, it drives the piston 9 to descend through the piston rod, so that negative pressure is generated in the cylinder 10, and the negative pressure is transmitted to the cavity tube 15 through the connecting pipe 8. When the molding is completed, the lifting plate 13 rises, which drives the piston 9 to rise, so that positive pressure is generated in the cylinder 10, so that the top mold 17 drives the metal material to rise. The specific steps are: S1: After a working stroke of the lifting plate 13 is completed, it is located in a relatively middle position. At this time, there is a certain gap between the lifting plate 13 and the forming mold 2 for loading materials. At this time, the top mold 17 is located at the bottom of the female mold 7; S2: The forming mold 2 then performs a loading action. After the loading is completed, the lifting plate 13 descends to further increase the negative pressure in the inner cavity of the cylinder body 10; S3: After the molding is completed, the lifting plate 13 rises to a higher position relative to step S1, and the top mold 17 is lifted up by the positive pressure, and then the material is unloaded. After the unloading is completed, the lifting plate 13 descends to the middle, and then the material is loaded.

[0034] The device is provided with a gas control component, and the gas control component controls the air pressure in the form of a "pneumatic cylinder" composed of a piston 9 and a cylinder body 10, and then utilizes the displacement characteristics of the lifting plate 13 during the pressing process, so that the power supply of positive pressure and negative pressure can be synchronized with the lifting plate 13. On the one hand, the synchronization of the device is increased and the control steps of each control node are simplified. On the other hand, the layout of the power source is simplified, which is convenient for volume optimization.

[0035] In order to solve the pressing quality problem; Figure 2 As shown, a cleaning assembly 14 is disposed on the outer side of the hollow cylinder 16 , and the cleaning assembly 14 includes a movable ring 20 fixed to the outer side wall of the hollow cylinder 16 and a plurality of brush plates 19 fixed to the outer side wall of the movable ring 20 in an inclined and circular array.

[0036] The outer wall of the hollow tube 15 is provided with a spiral groove 22 , and the movable ring 20 is movably limited and matched with the inner wall of the spiral groove 22 through a limiting column 21 inserted into the inner wall of the movable ring 20 .

[0037] When the top mold 17 rises to push the material, the hollow cylinder 16 also rises relative to the cavity tube 15, thereby driving the hollow cylinder 16 to rotate through the cooperation of the limiting column 21 and the spiral groove 22, thereby driving the movable ring 20 to rotate, thereby causing the brush plate 19 to rotate. When the brush plate 19 rotates to the inner wall of the female mold 7, the metal powder adhered or attached to the inner wall of the female mold 7 can be cleaned.

[0038] The device, by setting a cleaning component 14, can clean the inner wall of the female mold 7 after a single molding through a brush plate 19, so as to prevent surface defects of subsequent molded products caused by the adhesion of metal powder, thereby improving the molding quality. When the brush plate 19 is cleaning, it is also limited by the limiting column 21 and the spiral groove 22 to realize rotation, thereby preventing cleaning dead corners and increasing the cleaning effect. At the same time, its rotation power comes from the lifting power of the material taking, which further increases the synchronization of the operation of the device.

[0039] In order to solve the feeding problem; Figure 1 , 5 As shown in Figure 6, the feeding mechanism 3 includes a slider 23 slidably connected to the upper surface of the forming mold 2 and a support frame 26 fixed to the top outer wall of the forming mold 2 through a support leg 37. The inner wall of the slider 23 is provided with a transition trough 24, and a hopper 27 is welded to the top of the support frame 26. The inner wall of the support frame 26 is rotatably connected to a roller 28 through an axle 40, and the inner wall of the roller 28 is provided with a blind groove 29.

[0040] A second retractor 25 is fixed to the top outer wall of the forming die 2 by bolts, and the retractable end of the second retractor 25 is fixed to the side wall of the slider 23 by bolts.

[0041] When the roller 28 rotates so that the opening of the blind groove 29 is located at the top, the metal powder in the hopper 27 will fall into the inside of the blind groove 29, and then the opening of the blind groove 29 rotates to the bottom, and the powder falls into the transition trough 24. Then the telescopic device 25 is started to drive the slider 23 to move until the transition trough 24 moves to the top of the female mold 7, and the metal powder falls into the female mold 7 to complete the loading.

[0042] The outer wall of the wheel shaft 40 is connected with a blind groove 29 via a key, and the side wall of the slider 23 is fixed with a rack 38 via bolts, and the rack 38 is meshed with the bottom of the gear 39.

[0043] When the slider 23 slides for loading, it drives the rack 38 to slide, thereby driving the gear 39 to rotate, and then driving the blind slot 29 to rotate through the axle 40, so that its opening rotates from the bottom to the top. After the loading is completed, the slider 23 is reset and the gear 39 is reversed, so that the opening of the blind slot 29 rotates from the top to the bottom.

[0044] This device can realize a transitional automatic loading function by utilizing the sliding of the slider 23 and the rotation of the blind groove 29, and by utilizing the gears 39 and 39 to link the sliding of the slider 23 and the rotation of the blind groove 29, thereby increasing the synchronization of the device on the one hand and further reducing the power source layout on the other hand, which is convenient for volume optimization.

[0045] In order to solve the problem of automatic material feeding; Figure 6 As shown, one side of the slider 23 is rotatably connected to a “U”-shaped claw 34 via a rotating shaft 31 , and an inclined surface 33 is provided on the inner side of the “U”-shaped claw 34 .

[0046] The outer wall of the rotating shaft 31 is connected to a reel 32 via a key, and a torsion spring 30 is buckled on the opposite side of the reel 32 and the slider 23, and a twisted rope 36 is wound around the reel 32, and the end of the twisted rope 36 is fixed to the bottom outer wall of the support frame 26, and a guide ring 35 for limiting the twisted rope 36 is fixed to the side wall of the slider 23.

[0047] When the slider 23 is spreading the material, the "U"-shaped claw 34 will first contact the molding material, and due to the relative displacement between the reel 32 and the support frame 26, the twisted rope 36 is stretched, and the reel 32 drives the "U"-shaped claw 34 to rotate, thereby rotating the molding material. After rotation, the inclined surface 33 is used to make the molding material roll and discharge. When resetting, the torsion spring 30 drives the reel 32 to rotate in the opposite direction.

[0048] The device, by setting a "U"-shaped claw 34, can rotate the round material after being formed, and then use the inclined surface 33 to guide it to slide down, so as to realize the automatic unloading function, and its structure is simple and the cost is low. In addition, the "U"-shaped claw 34 is driven by the cooperation of the twisted rope 36 and the reel 32, which further reduces the driving layout and increases synchronization.

[0049] When the present embodiment is used, negative pressure is first applied to the cavity tube 15 through the gas control component, and the top die 17 is lowered to the bottom of the female die 7 by its own gravity and negative pressure, and then the inner cavity of the female die 7 is filled with metal powder through the feeding mechanism 3, and then the lifting plate 13 is driven down through the telescopic device 12, and the die 11 is driven down at the same time, and the metal powder is extruded by the limit of the female die 7 and the extrusion between the die 11 and the top die 17, and during the extrusion process, the heating coil 18 is started to heat the metal powder, thereby forming the finished product. After the molding is completed, the die 11 moves upward, and at the same time, the gas control component inputs positive pressure into the cavity tube 15, and the top die 17 rises to eject the formed metal material. When the top die 17 rises to eject the material, the hollow cylinder 16 also rises relative to the cavity tube 15, thereby driving the hollow cylinder 16 to rotate through the cooperation of the limit column 21 and the spiral groove 22, thereby driving the movable ring 20 to rotate, so that the brush plate 19 rotates. When the brush plate 19 rotates to the inner wall of the female mold 7, the metal powder bonded or attached to the inner wall of the female mold 7 can be cleaned. When the slider 23 is loading When sliding, it drives the rack 38 to slide, thereby driving the gear 39 to rotate, thereby driving the blind slot 29 to rotate through the wheel shaft 40, so that its opening rotates from the bottom to the top. After the loading is completed, the slider 23 is reset, and the gear 39 is reversed, so that the opening of the blind slot 29 rotates from the top to the bottom. When the roller 28 rotates so that the opening of the blind slot 29 is located at the top, the metal powder in the hopper 27 will fall into the inside of the blind slot 29, and then the opening of the blind slot 29 rotates to the bottom, and the powder falls into the transition trough 24, and then the telescopic device 22 is started. The slider 23 is driven to move until the transition trough 24 moves to the top of the female mold 7, and the metal powder falls into the female mold 7 to complete the loading. When the slider 23 is spreading the material, the "U"-shaped claw 34 will first contact the molding material, and due to the relative displacement between the reel 32 and the support frame 26, the twisted rope 36 is stretched, and the reel 32 drives the "U"-shaped claw 34 to rotate, thereby rotating the molding material. After the rotation, the inclined surface 33 is used to make the molding material roll and unload. When resetting, the torsion spring 30 drives the reel 32 to rotate in the opposite direction.

[0050] Embodiment 2: A numerically controlled metal powder pressing and forming device, such as Figure 8 , 9As shown, in order to solve the material connection problem, this embodiment makes the following improvements on the basis of embodiment 1: the unloading mechanism 5 includes a guide ramp block 42 fixed to the side wall of the forming mold 2 by bolts and a material connection box 44 just placed on the top outer wall of the base 1.

[0051] The lower end of the guide ramp block 42 is rotatably connected to a buffer plate 43 via a plate shaft 41 , and the plate shaft 41 and the opposite side of the guide ramp block 42 are buckled with a same spiral spring 45 .

[0052] By setting up the guide ramp block 42, it can guide the rolling molding material again, so that it can reliably fall into the receiving box 44 for collection, and on this basis, a buffer plate 43 is set at the relative bottom end of the guide ramp block 42, and then the buffer plate 43 is elastically supported by the spiral spring 45, so that the rolling molding material can be buffered to prevent damage caused by high-speed rolling and collision.

[0053] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A CNC metal powder pressing and forming device, comprising a base (1) and a forming die (2) and a gantry (6) fixedly mounted on the top outer wall of the base (1), characterized in that: A loading mechanism (3) is provided on one side of the top of the molding die (2), a same set of pressing and molding mechanisms (4) are provided on the inner wall of the other side of the molding die (2) and below the gantry (6), and a unloading mechanism (5) is provided on the side wall of the molding die (2); The pressing and forming mechanism (4) comprises a pressing die (11), a top die (17), and a female die (7) fixedly embedded in the inner wall of the forming die (2); the top die (17) is movably fitted inside the female die (7); the female die (7) is a hollow structure; a heating coil (18) is arranged in the cavity of the female die (7); a lifting plate (13) is fixedly mounted on the top of the pressing die (11); the lifting plate (13) is slidably fitted on the inner side wall of the gantry (6); and a telescopic device (12) for driving the lifting plate (13) to move up and down is fixedly mounted on the top of the gantry (6); A hollow cylinder (16) is fixedly mounted on the bottom outer wall of the top mold (17); a cavity tube (15) is movably connected to the inner wall of the hollow cylinder (16); the cavity tube (15) is fixedly mounted on the top outer wall of the base (1); and a gas control component is provided at the other end of the cavity tube (15).

2. A CNC metal powder pressing and forming device according to claim 1, characterized in that: The gas control assembly comprises a connecting pipe (8), a piston 1 (9) and a cylinder body (10); the cylinder body (10) is fixedly mounted on the lower surface of the top of the gantry (6); the piston 1 (9) is slidably fitted on the inner wall of the cylinder body (10); and the bottom of the piston 1 (9) is connected to the upper surface of the lifting plate (13) via a piston rod; one end of the connecting pipe (8) is fixedly mounted and connected to the cylinder body (10); and the other side of the connecting pipe (8) is fixedly mounted and connected to the bottom of the cavity tube (15).

3. The CNC metal powder pressing and forming device according to claim 1, characterized in that: A cleaning assembly (14) is arranged on the outside of the hollow cylinder (16), and the cleaning assembly (14) comprises a movable ring (20) fixed to the outer wall of the hollow cylinder (16) and a plurality of brush plates (19) fixed to the outer wall of the movable ring (20) in an inclined and circular array.

4. A numerically controlled metal powder pressing and forming device according to claim 3, characterized in that: The outer wall of the cavity tube (15) is provided with a spiral groove (22), and the movable ring (20) is movably limited and matched with the inner wall of the spiral groove (22) through a limit column (21) inserted into the inner wall of the movable ring (20).

5. The CNC metal powder pressing and forming device according to claim 1, characterized in that: The feeding mechanism (3) comprises a slider (23) slidably connected to the upper surface of the forming die (2) and a support frame (26) fixed to the outer wall of the top of the forming die (2) via support legs (37); a transition trough (24) is provided on the inner wall of the slider (23); a hopper (27) is fixedly mounted on the top of the support frame (26); a roller (28) is rotatably connected to the inner wall of the support frame (26) via a wheel shaft (40); and a blind groove (29) is provided on the inner wall of the roller (28).

6. A numerically controlled metal powder pressing and forming device according to claim 5, characterized in that: A second telescope (25) is fixedly mounted on the top outer wall of the molding die (2), and a telescopic end of the second telescope (25) is fixedly mounted on the side wall of the slider (23).

7. A numerically controlled metal powder pressing and forming device according to claim 6, characterized in that: The outer wall of the wheel shaft (40) is connected with a blind groove (29) via a key, and a rack (38) is fixedly mounted on the side wall of the slider (23), and the rack (38) is meshed with the bottom of the gear (39).

8. The CNC metal powder pressing and forming device according to claim 5, characterized in that: One side of the sliding block (23) is rotatably connected to a "U"-shaped claw (34) via a rotating shaft (31), and an inclined surface (33) is provided on the inner side of the "U"-shaped claw (34).

9. A numerically controlled metal powder pressing and forming device according to claim 8, characterized in that: The outer wall of the rotating shaft (31) is connected to a reel (32) via a key, a torsion spring (30) is buckled on the opposite side of the reel (32) and the slider (23), a twisted rope (36) is wound around the reel (32), an end of the twisted rope (36) is fixed to the bottom outer wall of the support frame (26), and a guide ring (35) for limiting the position of the twisted rope (36) is fixed to the side wall of the slider (23).

10. A numerically controlled metal powder pressing and forming device according to claim 9, characterized in that: The material discharge mechanism (5) comprises a guide bevel block (42) fixedly mounted on the side wall of the forming die (2) and a material receiving box (44) placed on the top outer wall of the base (1); the lower end of the guide bevel block (42) is rotatably connected to a buffer plate (43) via a plate shaft (41); and the plate shaft (41) and the guide bevel block (42) are buckled with a same spiral spring (45) on the opposite side thereof.

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