Powder compression molding equipment for powder metallurgy

Abstract

The invention relates to the technical field of powder metallurgy, and discloses powder compression molding equipment for powder metallurgy, which comprises a press machine, the press machine further comprises a powder supply device, the powder supply device comprises a particle adsorption structure and a circulation structure, and the particle adsorption structure comprises a feeding barrel, an output shaft, a placement box and a feeding barrel. The feeding barrel is arranged on the left side of the press machine, the output shaft rotationally penetrates through the bottom end of the feeding barrel, the placing box is fixedly connected to the upper portion of the feeding barrel, and the feeding barrel is fixedly connected to the upper portion of the placing box. And the output shaft rotates and drives the stirring paddle to rotate at the same time, so that the stirring paddle stirs the powder, the powder and impurity particles are dispersed, activated carbon is adsorbed more easily, the adsorption efficiency is further improved, and the problems that the density is not high enough and the processing effect is poor after the powder is pressed into blocks due to excessive impurities in the powder during processing are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of powder metallurgy, and specifically relates to a powder pressing and forming device for powder metallurgy. Background Art

[0002] Powder metallurgy is a process for preparing parts by pressing and sintering metal or alloy powders. This process can be used to produce parts with high precision and complex shapes. The pressing equipment for powder metallurgy is usually a processing equipment that uses a stamping device to stamp the metal powder in a mold to make it form. The existing pressing equipment for powder metallurgy does not have the function of removing impurity particles in the metal powder, and the pressed metal blocks often have poor quality and no utilization value.

[0003] The patent with the patent number CN201611018506.0 discloses a servo press applied to powder metallurgy pressing and forming processing. This patent has fewer transmission parts, less transmission error, and high precision; the mold is replaced by a quick mold clamp, omitting the mold base and simplifying the structure of the present invention; both the upper mold and the female mold are driven by drivers, and the motion curves of the upper mold and the female mold can be designed according to the pressing process of powder metallurgy to meet the pressing requirements of different products; a central core rod is provided in the center of the female mold to meet the pressing requirements of the central inner hole; the female mold is synchronously driven by two drivers symmetrically arranged at the center, increasing the pressing force of the present invention; three pressure sensors are provided on the upper mold of the present invention, which can realize the compound control of force and displacement. Although this patent solves the above problems, it still has the problems that the impurity particles in the metal powder cannot be removed, the metal powder is not easy to press, the pressing efficiency is low, and the pressing and forming effect is not good. Therefore, it is very necessary to design a powder pressing and forming device for powder metallurgy that can adsorb the impurity particles in the powder material to prevent the powder material from being doped with too many impurity particles, resulting in a reduction in quality, thereby improving the processing quality. Summary of the Invention

[0004] The purpose of the present invention is to provide a powder pressing and forming device for powder metallurgy to solve the problems raised in the above background art.

[0005] To solve the above technical problems, the present invention provides the following technical solution: A powder pressing and forming device for powder metallurgy, including a press. The press further includes a powder supply device. The powder supply device includes a particle adsorption structure and a circulation structure. The particle adsorption structure includes a feeding bucket, an output shaft, a placement box, and a feeding cylinder. The feeding bucket is arranged on the left side of the press. The output shaft rotates through the bottom end of the feeding bucket. The placement box is fixedly connected above the feeding bucket. The feeding cylinder is fixedly connected above the placement box. The circulation structure includes a feeding chute, a feeding sleeve barrel, a feeding bucket, a spiral rotating shaft, and a stirring paddle. The feeding chute is opened at the bottom end of the placement box. The feeding sleeve barrel is fixedly connected below the placement box. The feeding bucket is fixedly connected on the right side of the placement box. The spiral rotating shaft is rotatably connected to the bottom of the feeding bucket. The stirring paddle is fixedly connected to the surface of the output shaft. There is a motor above the output shaft. The output shaft rotates through the bottom end of the placement box. The feeding sleeve barrel is fixedly connected to the outside of the feeding bucket. A spiral feeding plate is arranged inside the feeding sleeve barrel and is fixedly connected to the surface of the feeding bucket. The feeding bucket is fixedly connected to the bottom right side of the feeding sleeve barrel. The spiral rotating shaft rotates through the top end of the feeding bucket. The output shaft and the spiral rotating shaft are connected by a synchronous belt for transmission. A feeding port is opened at the bottom end of the feeding bucket. Fine mesh holes are opened at the bottom end of the placement box. Fine mesh holes are opened on the surface of the feeding bucket. When the powder material is poured into the placement box, the powder material will enter the feeding bucket through the fine mesh holes at the bottom end of the placement box. Then, activated carbon is poured into the placement box from the feeding cylinder. The activated carbon adsorbs the impurity particles in the powder material through the fine mesh holes at the bottom end of the placement box, preventing the powder material from being doped with too many impurity particles and resulting in a reduction in quality, thereby improving the processing quality. After entering the placement box, the activated carbon enters the feeding sleeve barrel from the feeding chute and slides downward in a spiral shape, so as to be evenly distributed on the surface of the feeding bucket and adsorb through the fine mesh holes opened on the surface of the feeding bucket, expanding the adsorption area and improving the adsorption efficiency. When the activated carbon slides to the bottom of the feeding sleeve barrel, it will be squeezed into the bottom of the feeding bucket. At this time, the motor is started. The motor drives the output shaft to rotate. The output shaft drives the spiral rotating shaft to rotate. The spiral rotating shaft pushes the activated carbon to rise and re-enters the placement box, and then falls into the feeding sleeve barrel again to achieve continuous flow. During the flow, the adsorption efficiency of the activated carbon is improved, and the impurity particles can be adsorbed more effectively. At the same time, the output shaft drives the stirring paddle to rotate while rotating, so that the stirring paddle stirs the powder material, dispersing the powder material and the impurity particles, making it easier for the activated carbon to adsorb, further improving the adsorption efficiency, and avoiding the problem that the density of the powder material is not high enough after being pressed into a block during processing and the processing effect is not good.

[0006] According to the above technical scheme, a powder filling device is arranged below the feeding barrel, and the powder filling device comprises a feeding structure and a material equalizing structure, and the feeding structure comprises a bevel gear commutator, a conveying channel, a conveying belt, and a partition, the bevel gear commutator is transmission-connected to the bottom end of the output shaft, the conveying channel is fixedly connected to the bottom of the feeding barrel, the conveying belt is transmission-connected to both sides of the bevel gear commutator, and the partition is fixedly connected to the surface of the conveying belt, and the material equalizing structure comprises a lower mold, a convex plate, a limit frame, a vibration spring, and a clamping slider, the lower mold is arranged at the bottom of the press, the convex plate is fixedly connected to the front and rear ends of the left side of the lower mold, the limit frame is sleeved on the outside of the lower mold, the vibration spring is fixedly connected to the inner side of the limit frame, the clamping slider is slidably connected to the inner side of the limit frame, the front and rear sides of the limit frame are provided with slots, the four corners of the limit frame are provided with slide groove plates, and the clamping slider is slidably connected to the slide groove opened on the inner side of the slide groove plate, and the vibration spring is connected to both sides of the lower mold The fixed connection, the output shaft rotates to drive the internal gear of the bevel gear commutator to rotate, and the bevel gear commutator drives the conveyor belt to rotate. The conveyor belt catches the powder falling from the feed bucket and transports the powder to the lower die. A partition is set at a certain distance on the conveyor belt. The partition separates the powder. Because the powder poured into the lower die will accumulate on one side and then slide down. If too much powder is poured in instantly, the powder is easy to overflow the lower die, causing waste. Therefore, after the partition is set, the powder can enter the lower die at intervals, allowing the powder to have a certain sedimentation time and will not overflow the lower die again. With enough sedimentation time, the powder can be distributed more evenly, which is convenient for pressing. After the partition pours the powder into the lower die, it will touch the convex plate on the left side of the lower die, and pull the convex plate to drive the lower die to deviate. After the lower die deviates, the vibration spring is squeezed, and the reaction force makes the lower die vibrate left and right. The vibration of the lower die can shake the internal powder, so that the powder filling is more even, which is more convenient for pressing, and the density distribution of the finished product after pressing is more uniform.

[0007] According to the above technical solution, demolding devices are provided on both sides of the limit frame. The demolding devices include a pushing structure and a material shoveling structure. The pushing structure includes a gas collecting tank, a cylinder, a push plate, and a lifting table. The gas collecting tank is arranged below the press, the cylinder is fixedly connected above the gas collecting tank, the push plate is hingedly connected to the right side of the cylinder, the lifting table is fixedly connected to the bottom of the press, the material shoveling structure includes a support table, a material shoveling plate, a blanking inclined plate, and a limit plate. The support table is fixedly connected to the left side of the limit plate, the material shoveling plate is slidably connected above the support table, the blanking inclined plate is fixedly connected to the right side of the limit frame, the limit plate is fixedly connected to the left and right sides of the blanking inclined plate, the cylinder is fixedly connected above the support table, the material shoveling plate is fixedly connected to the right side of the push plate, the lifting table is fixedly connected to the bottom end of the lower mold, a lifting plate is arranged in the middle of the lifting table and the lifting plate is slidably connected inside the lower mold. After the powder is pressed and formed, it will be pushed by the lifting table above the lower mold. At this time, the gas collecting tank transports gas into the cylinder, the cylinder pushes the push plate, and the push plate then pushes the metal block to push the metal block out of the range of the lower mold. The pushing of the push plate makes it easier for the metal block to demold, facilitates the discharging of materials, and improves the processing efficiency. Moreover, when the push plate moves, it will drive the material shoveling plate to move together. The material shoveling plate can shovel into the bottom surface of the metal block to prevent the metal block from being too closely attached to the lifting table, resulting in difficult demolding, and further improves the demolding efficiency. After the material shoveling plate shovels up the metal block, the push plate pushes the metal block. When the push plate is pushed onto the blanking inclined plate, it will immediately tilt downward. At this time, the metal block slides down from the blanking inclined plate under the influence of gravity to complete the discharging of materials, avoiding material blockage and further improving the discharging efficiency.

[0008] According to the above technical solution, a vacuum deoxidation device is provided below the support table. The vacuum deoxidation device includes an air suction structure and a dust-proof purging structure. The air suction structure includes an outer frame, a vacuum pump, and an air valve. The outer frame is fixedly connected to the outside of the press. The vacuum pump is fixedly connected to the bottom of the outer frame. The air valve is fixedly connected to the right side of the air collection tank. The dust-proof purging structure includes an air delivery pipe, a torsion spring, a twisting air bag, and a dust-proof sleeve barrel. The air delivery pipe is fixedly connected to the right side of the air valve. The torsion spring is fixedly connected to the middle of the outer frame. The moving air bag is fixedly connected to the inner side of the torsion spring. The dust-proof sleeve barrel is fixedly connected to the middle of the outer frame. The air delivery pipe penetrates to the middle of the outer frame and into the inner side of the torsion spring. The air delivery pipe is fixedly connected to the bottom end of the twisting air bag. The torsion spring is fixedly connected to the lower part of the support table. The feeding bucket is fixedly connected to the top of the outer frame. The press is fixedly connected to the top of the outer frame. The support table is fixedly connected to the middle of the outer frame. The surface of the twisting air bag is provided with mesh holes. Before processing, the vacuum pump is started. The vacuum pump sucks the air in the middle of the outer frame and inputs the air into the air collection tank until the area within the press is in a vacuum state. After the vacuum pump sucks the air, it prevents the powder from oxidizing when it comes into contact with the air during the pressing of the powder. When the vacuum pump sucks the air, the air will pass through the filtration of the dust-proof sleeve barrel and then enter the vacuum pump, preventing solid particles or floating powder in the air from entering and blocking the vacuum pump, thereby improving the air suction efficiency. After the processing is completed, the air valve is opened. The oxygen in the air collection tank will flow into the air delivery pipe from the air valve and then into the twisting air bag. The twisting air bag is in a twisted state before the air intake. When it expands due to the air intake, the twisting air bag will instantly untwist and eject air flow. When the air flow blows onto the dust-proof sleeve barrel, it can disperse the solid particles blocking the dust-proof sleeve barrel, making the dust-proof sleeve barrel filter the air again and return to a smooth ventilation state, further improving the air suction efficiency and enabling the device to quickly deoxidize and prevent the powder from oxidizing during each processing.

[0009] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: In the present invention, by providing a feeding chute, a feeding sleeve barrel, a feeding bucket, and a spiral rotating shaft, the adsorption efficiency of activated carbon during flow is improved, and it can more effectively adsorb impurity particles. Moreover, while the output shaft rotates, it drives the stirring paddle to rotate, thereby enabling the stirring paddle to stir the powder, dispersing the powder and impurity particles, making it easier for the activated carbon to adsorb, further improving the adsorption efficiency, and avoiding the problem that the density of the powder is not high enough after being pressed into a block due to excessive impurities in the powder during processing, resulting in poor processing effects. In the present invention, by providing a convex plate, a limiting frame, a vibration spring, and a clamping slider, after the partition plate pours the powder into the lower die, it will touch the convex plate on the left side of the lower die and pull the convex plate to drive the lower die to shift. After the lower die shifts, it squeezes the vibration spring, and the reaction force causes the lower die to vibrate left and right. The vibration of the lower die can shake the powder inside, making the powder fill more evenly, being more convenient for pressing, and making the density distribution of the pressed finished product more uniform. In the present invention, by providing a support platform, a shovel plate, a blanking inclined plate, and a limiting plate, the shovel plate can shovel into the bottom surface of the metal block, preventing the metal block from being too closely attached to the lifting platform and making it difficult to demold, further improving the demolding efficiency. After the shovel plate shovels up the metal block, the pushing plate pushes the metal block. When the pushing plate is pushed onto the blanking inclined plate, it will immediately tilt downward. At this time, the metal block slides down from the blanking inclined plate under the influence of gravity, completing the discharging, avoiding material blockage, and further improving the discharging efficiency. In the present invention, by providing an air delivery pipe, a torsion spring, a twisting airbag, and a dust-proof sleeve barrel, the twisting airbag is in a twisted state before air intake. When it expands due to air intake, the twisting airbag will instantly untwist and eject air flow. When the air flow blows onto the dust-proof sleeve barrel, it can disperse the solid particles blocking the dust-proof sleeve barrel, making the dust-proof sleeve barrel become smooth again after filtering the air once more, further improving the air intake efficiency, and enabling the device to quickly remove oxygen and prevent powder oxidation during each processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention, and do not constitute a limitation to the present invention.

[0011] In the drawings: Figure 1 is the schematic diagram of the overall three-axis orthographic solid structure of the present invention; Figure 2 is the schematic diagram of the three-axis orthographic sectional solid structure of the present invention; Figure 3 is the schematic diagram of the three-axis orthographic sectional solid structure of the powder supply device of the present invention; Figure 4 is the present invention Figure 3 the enlarged structure schematic diagram of A in; Figure 5 is the schematic diagram of the three-axis orthographic sectional solid structure of the powder filling device of the present invention; Figure 6 is the present invention Figure 5 the enlarged structure schematic diagram of B in; Figure 7 is the schematic diagram of the three-axis orthographic sectional solid structure of the demolding device of the present invention; Figure 8 is the present invention Figure 7 the enlarged structure schematic diagram of C in; Figure 9 is the schematic diagram of the front side solid structure of the vacuum deoxidation device of the present invention; In the figure: 1. Press; 2. Powder feeding device; 21. Feeding bucket; 22. Output shaft; 23. Placing box; 24. Feeding cylinder; 25. Feeding chute; 26. Feeding sleeve barrel; 27. Loading bucket; 28. Spiral shaft; 29. Stirring paddle; 3. Powder filling device; 31. Bevel gear commutator; 32. Conveying channel; 33. Conveyor belt; 34. Partition board; 35. Lower die; 36. Convex plate; 37. Limit frame; 38. Vibration spring; 39. Clamping slider; 4. Demoulding device; 41. Gas collecting tank; 42. Cylinder; 43. Push plate; 44. Lifting platform; 45. Support platform; 46. Shoveling plate; 47. Feeding inclined plate; 48. Limit plate; 5. Vacuum deoxidation device; 51. Outer frame; 52. Vacuum pump; 53. Air valve; 54. Gas pipeline; 55. Torsion spring; 56. Twisting air bag; 57. Dust-proof sleeve barrel. Detailed implementation manners

[0012] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0013] Please refer to Figures 1-4, an embodiment of the present invention is: a powder pressing and forming device for powder metallurgy, including a press 1. The press 1 further includes a powder supply device 2. The powder supply device 2 includes a particle adsorption structure and a circulation structure. The particle adsorption structure includes a feeding barrel 21, an output shaft 22, a placement box 23, and a feeding cylinder 24. The feeding barrel 21 is arranged on the left side of the press 1. The output shaft 22 rotates through the bottom end of the feeding barrel 21. The placement box 23 is fixedly connected above the feeding barrel 21. The feeding cylinder 24 is fixedly connected above the placement box 23. Pour the powder material into the placement box 23, and the powder material will enter the feeding barrel 21 through the fine mesh holes at the bottom of the placement box 23. Then pour activated carbon into the placement box 23 from the feeding cylinder 24. The activated carbon adsorbs the impurity particles in the powder material through the fine mesh holes at the bottom of the placement box 23, preventing the powder material from being doped with too many impurity particles and resulting in a reduction in quality, thereby improving the processing quality. The circulation structure includes a blanking groove 25, a blanking sleeve 26, a feeding barrel 27, a spiral shaft 28, and a stirring paddle 29. The blanking groove 25 is opened at the bottom of the placement box 23. The blanking sleeve 26 is fixedly connected below the placement box 23. The feeding barrel 27 is fixedly connected to the right side of the placement box 23. The spiral shaft 28 is rotatably connected to the bottom of the feeding barrel 27. The stirring paddle 29 is fixedly connected to the surface of the output shaft 22. There is a motor above the output shaft 22. The output shaft 22 rotates through the bottom end of the placement box 23. The blanking sleeve 26 is fixedly connected to the outside of the feeding barrel 21. A spiral blanking plate is arranged inside the blanking sleeve 26 and is fixedly connected to the surface of the feeding barrel 21. The feeding barrel 27 is fixedly connected to the bottom right side of the blanking sleeve 26. The spiral shaft 28 rotates through the top end of the feeding barrel 27. The output shaft 22 and the spiral shaft 28 are connected by a synchronous belt for transmission. A blanking port is opened at the bottom end of the feeding barrel 21. Mesh holes are opened at the bottom end of the placement box 23. Mesh holes are opened on the surface of the feeding barrel 21. After entering the placement box 23, the activated carbon enters the blanking sleeve 26 from the blanking groove 25 and slides downward in a spiral shape, so as to be evenly distributed on the surface of the feeding barrel 21 and adsorb through the fine mesh holes opened on the surface of the feeding barrel 21, expanding the adsorption area and improving the adsorption efficiency. When the activated carbon slides to the bottom of the blanking sleeve 26, it will be squeezed into the bottom of the feeding barrel 27. At this time, start the motor. The motor drives the output shaft 22 to rotate. The output shaft 22 drives the spiral shaft 28 to rotate. The spiral shaft 28 pushes the activated carbon to rise and re-enters the placement box 23, and then falls from the placement box 23 into the blanking sleeve 26 again to achieve continuous flow. During the flow, the adsorption efficiency of the activated carbon is improved, and the impurity particles can be adsorbed more effectively. At the same time, when the output shaft 22 rotates, it drives the stirring paddle 29 to rotate, so that the stirring paddle 29 stirs the powder material, disperses the powder material and the impurity particles, and the activated carbon is easier to adsorb, further improving the adsorption efficiency, and avoiding the problem that the density of the powder material is not high enough after being pressed into a block during processing and the processing effect is not good; Working principle: Pour the powder material into the placement box 23, and the powder material will enter the feeding barrel 21 through the small mesh holes at the bottom of the placement box 23. Then pour the activated carbon into the placement box 23 from the feeding cylinder 24. The activated carbon adsorbs the impurity particles in the powder material through the small mesh holes at the bottom of the placement box 23, preventing the powder material from being doped with too many impurity particles and causing a reduction in quality, thereby improving the processing quality. After entering the placement box 23, the activated carbon enters the blanking sleeve 26 from the blanking chute 25 and slides downward in a spiral shape, so as to be evenly distributed on the surface of the feeding barrel 21 and adsorb through the small mesh holes opened on the surface of the feeding barrel 21, expanding the adsorption area and improving the adsorption efficiency. When the activated carbon slides to the bottom of the blanking sleeve 26, it will be squeezed into the bottom of the feeding barrel 27. At this time, start the motor. The motor drives the output shaft 22 to rotate, and the output shaft 22 drives the spiral shaft 28 to rotate. The spiral shaft 28 pushes the activated carbon to rise and re-enters the placement box 23, and then falls from the placement box 23 into the blanking sleeve 26 again to achieve continuous flow. During the flow, the adsorption efficiency of the activated carbon is improved, and it can more effectively adsorb the impurity particles. At the same time, when the output shaft 22 rotates, it drives the stirring paddle 29 to rotate, so that the stirring paddle 29 stirs the powder material, disperses the powder material and the impurity particles, and the activated carbon is more likely to adsorb, further improving the adsorption efficiency, and avoiding the problem that the density of the powder material is not high enough after being pressed into blocks due to too many impurities in the powder material during processing and the processing effect is not good.

[0014] Please refer to Figures 5-6On the basis of the above embodiment, another embodiment of the present invention includes a powder filling device 3, the powder filling device 3 includes a feeding structure and a material distribution structure, the feeding structure includes a bevel gear commutator 31, a conveying channel 32, a conveying belt 33, and a partition 34, the bevel gear commutator 31 is transmission-connected to the bottom end of the output shaft 22, the conveying channel 32 is fixedly connected to the bottom of the feed barrel 21, the conveying belt 33 is transmission-connected to both sides of the bevel gear commutator 31, the partition 34 is fixedly connected to the surface of the conveying belt 33, and the output shaft 22 rotates to drive the bevel gear commutator The gear inside the device 31 rotates, and the bevel gear commutator 31 drives the conveyor belt 33 to rotate. The conveyor belt 33 catches the powder falling from the feed bucket 21 and conveys the powder to the lower mold 35. A partition 34 is set on the conveyor belt 33 at a certain distance. The partition 34 separates the powder. Because the powder poured into the lower mold 35 will accumulate on one side and then slide down. If too much powder is poured in at once, the powder is easy to overflow from the lower mold 35, causing waste. Therefore, after the partition 34 is set, the powder can enter the lower mold 35 at intervals, so that the powder has a certain sedimentation time , will no longer overflow the lower die 35, and with enough sedimentation time, the powder can be distributed more evenly, which is convenient for pressing. The material distribution structure includes a lower die 35, a convex plate 36, a limit frame 37, a vibration spring 38, and a clamping slide block 39. The lower die 35 is arranged at the bottom of the press machine 1, the convex plate 36 is fixedly connected to the front and rear ends of the left side of the lower die 35, the limit frame 37 is sleeved on the outside of the lower die 35, the vibration spring 38 is fixedly connected to the inner side of the limit frame 37, the clamping slide block 39 is slidably connected to the inner side of the limit frame 37, and the limit frame 37 is provided with slots on the front and rear sides. The frame 37 is provided with a chute plate at the four corners, and the clamping slider 39 is slidably connected with the chute provided on the inner side of the chute plate. The vibration spring 38 is fixedly connected with both sides of the lower die 35. After the partition plate 34 pours the powder into the lower die 35, it touches the convex plate on the left side of the lower die 35, and pulls the convex plate 36 to drive the lower die 35 to deviate. After the lower die 35 deviates, the vibration spring 38 is squeezed, and the reaction force causes the lower die 35 to vibrate left and right. The vibration of the lower die 35 can shake the powder inside, so that the powder filling is more uniform, which is more convenient for pressing, and the density distribution of the pressed finished product is more uniform. Working principle: The rotation of the output shaft 22 drives the internal gear of the bevel gear commutator 31 (HD09 - HD28) to rotate. The bevel gear commutator 31 drives the conveyor belt 33 to rotate. The conveyor belt 33 catches the powder falling from the feeding hopper 21 and conveys the powder into the lower die 35. A partition 34 is arranged at intervals on the conveyor belt 33. The partition 34 separates the powder. Because the powder poured into the lower die 35 will accumulate on one side and then slide down. If too much powder is poured in instantly, the powder is likely to overflow from the lower die 35, causing waste. Therefore, after setting the partition 34, the powder can enter the lower die 35 at intervals, giving the powder a certain sedimentation time and preventing it from overflowing from the lower die 35. Moreover, with sufficient sedimentation time, the powder can be distributed more evenly, facilitating pressing. After the partition 34 pours the powder into the lower die 35, it will touch the convex plate on the left side of the lower die 35 and pull the convex plate 36 to drive the lower die 35 to shift. After the lower die 35 shifts, it squeezes the vibration spring 38, and the reaction force causes the lower die 35 to vibrate left and right. The vibration of the lower die 35 can shake the powder inside, making the powder fill more evenly and being more convenient for pressing, and making the density distribution of the pressed finished product more uniform.

[0015] Please refer to Figures 7-9, on the basis of the above embodiments, in another embodiment of the present invention, it includes a demolding device 4. The demolding device 4 includes a pushing structure and a shoveling structure. The pushing structure includes an air collecting tank 41, a cylinder 42, a push plate 43, and a lifting table 44. The air collecting tank 41 is arranged below the press 1. The cylinder 42 is fixedly connected above the air collecting tank 41. The push plate 43 is hingedly connected to the right side of the cylinder 42. The lifting table 44 is fixedly connected to the bottom of the press 1. After the powder is pressed and formed, it will be pushed by the lifting table 44 above the lower mold 35. At this time, the air collecting tank 41 conveys gas into the cylinder 42. The cylinder 42 pushes the push plate 43, and the push plate 43 then pushes the metal block to push the metal block out of the range of the lower mold 35. The pushing of the push plate 43 makes it easier for the metal block to demold, facilitates the discharging of materials, and improves the processing efficiency. The shoveling structure includes a support table 45, a shoveling plate 46, a blanking inclined plate 47, and a limiting plate 48. The support table 45 is fixedly connected to the left side of the limiting plate 48. The shoveling plate 46 is slidably connected above the support table 45. The blanking inclined plate 47 is fixedly connected to the right side of the limiting frame 37. The limiting plate 48 is fixedly connected to the left and right sides of the blanking inclined plate 47. The cylinder 42 is fixedly connected above the support table 45. The shoveling plate 46 is fixedly connected to the right side of the push plate 43. The lifting table 44 is fixedly connected to the bottom end of the lower mold 35. There is a lifting plate in the middle of the lifting table 44 and this lifting plate is slidably connected inside the lower mold 35. When the push plate 43 moves, it will drive the shoveling plate 46 to move together. The shoveling plate 46 can shovel into the bottom surface of the metal block to prevent the metal block from being too closely attached to the lifting table 44, resulting in difficult demolding, and further improves the demolding efficiency. After the shoveling plate 46 shovels up the metal block, the push plate 43 pushes the metal block. When the push plate 43 is pushed onto the blanking inclined plate 47, it will immediately tilt downward. At this time, the metal block slides down from the blanking inclined plate 47 under the influence of gravity to complete the discharging of materials, avoiding material blockage and further improving the discharging efficiency. A vacuum deoxidation device 5 is arranged below the support table 45. The vacuum deoxidation device 5 includes an air suction structure and a dust-proof blowing structure. The air suction structure includes an outer frame 51, a vacuum pump 52, and an air valve 53. The outer frame 51 is fixedly connected to the outside of the press 1. The vacuum pump 52 is fixedly connected to the bottom of the outer frame 51. The air valve 53 is fixedly connected to the right side of the air collecting tank 41. Before processing, start the vacuum pump 52. The vacuum pump 52 sucks the air in the middle of the outer frame 51 and inputs the air into the air collecting tank 41 until the range of the press 1 is in a vacuum state. After the vacuum pump 52 sucks the air, it avoids the oxidation of the powder when pressing the powder. The dust-proof blowing structure includes an air delivery pipe 54, a torsion spring 55, a twisting air bag 56, and a dust-proof sleeve barrel 57. The air delivery pipe 54 is fixedly connected to the right side of the air valve 53. The torsion spring 55 is fixedly connected to the middle of the outer frame 51. The moving air bag is fixedly connected inside the torsion spring 55. The dust-proof sleeve barrel 57 is fixedly connected to the middle of the outer frame 51. The air delivery pipe 54 penetrates to the middle of the outer frame 51. The air delivery pipe 54 penetrates to the inside of the torsion spring 55. The air delivery pipe 54 is fixedly connected to the bottom end of the twisting air bag 56. The torsion spring 55 is fixedly connected to the lower part of the support table 45. The feeding bucket 21 is fixedly connected to the top of the outer frame 51.The press 1 is fixedly connected to the top of the outer frame 51, and the support table 45 is fixedly connected to the middle of the outer frame 51. The surface of the twisting airbag 56 is provided with mesh holes. When the vacuum pump 52 sucks air, the air will pass through the filtration of the dust-proof sleeve barrel 57 and then enter the vacuum pump 52, preventing solids in the air or powdered materials from floating out from entering and blocking the vacuum pump 52, thereby improving the air suction efficiency. After the processing is completed, the air valve 53 is opened, and the oxygen in the gas collection tank 41 will flow into the air delivery pipe 54 from the air valve 53, and then flow into the twisting airbag 56 from the air delivery pipe 54. The twisting airbag 56 is in a twisted state before air intake. When it expands after air intake, the twisting airbag 56 will instantly untwist and eject air flow. When the air flow blows to the dust-proof sleeve barrel 57, it can disperse the solid particles blocking the dust-proof sleeve barrel 57, so that the dust-proof sleeve barrel 57 filters the air again and returns to a smooth ventilation state, further improving the air suction efficiency, enabling the device to quickly remove oxygen and prevent the powdered materials from oxidizing during each processing; Working principle: After the powdered materials are pressed into shape, they will be pushed by the lifting table 44 above the lower die 35. At this time, the gas collection tank 41 delivers gas into the cylinder 42. The cylinder 42 pushes the push plate 43, and the push plate 43 then pushes the metal block, pushing the metal block out of the range of the lower die 35. The pushing of the push plate 43 makes it easier for the metal block to be demolded, facilitating the discharging of materials and improving the processing efficiency. Moreover, when the push plate 43 moves, it will drive the shovel plate 46 to move together. The shovel plate 46 can shovel into the bottom surface of the metal block, preventing the metal block from being too closely attached to the lifting table 44 and making it difficult to demold, further improving the demolding efficiency. After the shovel plate 46 shovels up the metal block, the push plate 43 pushes the metal block. When the push plate 43 is pushed onto the blanking inclined plate 47, it will immediately tilt downward. At this time, the metal block slides down from the blanking inclined plate 47 under the influence of gravity, completing the discharging of materials, avoiding material blockage, and further improving the discharging efficiency; Before processing, the vacuum pump 52 is started. The vacuum pump 52 sucks the air in the middle of the outer frame 51 and inputs the air into the gas collection tank 41 until the range of the press 1 is in a vacuum state. After the vacuum pump 52 sucks the air, it avoids the oxidation of the powdered materials when they come into contact with the air during the pressing process. When the vacuum pump 52 sucks the air, the air will pass through the filtration of the dust-proof sleeve barrel 57 and then enter the vacuum pump 52, preventing solids in the air or powdered materials from floating out from entering and blocking the vacuum pump 52, thereby improving the air suction efficiency. After the processing is completed, the air valve 53 is opened, and the oxygen in the gas collection tank 41 will flow into the air delivery pipe 54 from the air valve 53, and then flow into the twisting airbag 56 from the air delivery pipe 54. The twisting airbag 56 is in a twisted state before air intake. When it expands after air intake, the twisting airbag 56 will instantly untwist and eject air flow. When the air flow blows to the dust-proof sleeve barrel 57, it can disperse the solid particles blocking the dust-proof sleeve barrel 57, so that the dust-proof sleeve barrel 57 filters the air again and returns to a smooth ventilation state, further improving the air suction efficiency, enabling the device to quickly remove oxygen and prevent the powdered materials from oxidizing during each processing.

[0016] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0017] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A powder pressing and molding device for powder metallurgy, comprising a press machine (1), characterized in that: Also included is a powder supply device (2), the powder supply device (2) comprising a particle adsorption structure and a circulation structure; The particle adsorption structure comprises a feed barrel (21), an output shaft (22), a placement box (23), and a feed barrel (24); the feed barrel (21) is arranged on the left side of the press (1); the output shaft (22) rotates and passes through the bottom end of the feed barrel (21); the placement box (23) is fixedly connected above the feed barrel (21); and the feed barrel (24) is fixedly connected above the placement box (23); The circulation structure comprises a material discharge chute (25), a material discharge barrel (26), a material loading barrel (27), a spiral rotating shaft (28), and a stirring paddle (29); the material discharge chute (25) is opened at the bottom end of the placement box (23); the material discharge barrel (26) is fixedly connected to the bottom of the placement box (23); the material loading barrel (27) is fixedly connected to the right side of the placement box (23); the spiral rotating shaft (28) is rotatably connected to the bottom of the material loading barrel (27); and the stirring paddle (29) is fixedly connected to the surface of the output shaft (22).

2. The powder pressing and molding equipment for powder metallurgy according to claim 1, characterized in that: A motor is arranged above the output shaft (22), the output shaft (22) rotates and passes through the bottom end of the placement box (23), the unloading barrel (26) is fixedly connected to the outside of the feeding barrel (21), a spiral unloading plate is arranged on the inner side of the unloading barrel (26), and the spiral unloading plate is fixedly connected to the surface of the feeding barrel (21), the feeding barrel (27) is fixedly connected to the right side of the bottom of the unloading barrel (26), the spiral rotating shaft (28) rotates and passes through the top end of the feeding barrel (27), the output shaft (22) and the spiral rotating shaft (28) are connected by a synchronous belt transmission, the bottom end of the feeding barrel (21) is provided with a unloading port, the bottom end of the placement box (23) is provided with a mesh hole, and the surface of the feeding barrel (21) is provided with a mesh hole.

3. The powder pressing and molding equipment for powder metallurgy according to claim 2, characterized in that: A powder filling device (3) is provided below the feed barrel (21), the powder filling device (3) comprising a feeding structure and a material distribution structure, the feeding structure comprising a bevel gear commutator (31), a conveying channel (32), a conveying belt (33), and a partition (34), the bevel gear commutator (31) being transmission-connected to the bottom end of the output shaft (22), the conveying channel (32) being fixedly connected below the feed barrel (21), the conveying belt (33) being transmission-connected to both sides of the bevel gear commutator (31), and the partition (34) The material distribution structure is fixedly connected to the surface of the conveyor belt (33), and comprises a lower die (35), a convex plate (36), a limit frame (37), a vibration spring (38), and a clamping slide block (39). The lower die (35) is arranged at the bottom of the press machine (1), the convex plate (36) is fixedly connected to the front and rear ends of the left side of the lower die (35), the limit frame (37) is sleeved on the outside of the lower die (35), the vibration spring (38) is fixedly connected to the inner side of the limit frame (37), and the clamping slide block (39) is slidably connected to the inner side of the limit frame (37).

4. The powder pressing and molding equipment for powder metallurgy according to claim 3, characterized in that: The limit frame (37) is provided with slots on both the front and rear sides, and a slide plate is provided at the four corners of the limit frame (37). The clamping slider (39) is slidably connected to a slide groove provided on the inner side of the slide plate, and the vibration spring (38) is fixedly connected to both sides of the lower mold (35).

5. The powder pressing and molding equipment for powder metallurgy according to claim 4, characterized in that: Demolding devices (4) are arranged on both sides of the limit frame (37). The demoulding devices (4) include a pushing structure and a shoveling structure. The pushing structure includes an air collecting tank (41), a cylinder (42), a push plate (43), and a lifting platform (44). The air collecting tank (41) is arranged below the press (1). The cylinder (42) is fixedly connected above the air collecting tank (41). The push plate (43) is hingedly connected to the right side of the cylinder (42). The lifting platform (44) is fixedly connected to the bottom of the press (1). The shoveling structure includes a support platform (45), a shoveling plate (46), a material discharge inclined plate (47), and a limit plate (48). The support platform (45) is fixedly connected to the left side of the limit plate (48). The shoveling plate (46) is slidably connected above the support platform (45). The material discharge inclined plate (47) is fixedly connected to the right side of the limit frame (37). The limit plate (48) is fixedly connected to the left and right sides of the material discharge inclined plate (47).

6. The powder pressing and molding equipment for powder metallurgy according to claim 5, characterized in that: The cylinder (42) is fixedly connected to the top of the support platform (45), the shovel plate (46) is fixedly connected to the right side of the push plate (43), the lifting platform (44) is fixedly connected to the bottom end of the lower mold (35), and a lifting plate is provided in the middle of the lifting platform (44) and is slidably connected to the inner side of the lower mold (35).

7. The powder compacting equipment for powder metallurgy according to claim 6, characterized in that: A vacuum deoxidation device (5) is provided below the support platform (45). The vacuum deoxidation device (5) comprises an air suction structure and a dust-proof blowing structure. The air suction structure comprises an outer frame (51), a vacuum pump (52), and an air valve (53). The outer frame (51) is fixedly connected to the outside of the press (1). The vacuum pump (52) is fixedly connected to the bottom of the outer frame (51). The air valve (53) is fixedly connected to the right side of the gas collecting tank (41). The dust-proof blowing structure comprises an air supply pipe (54), a torsion spring (55), a torsion air bag (56), and a dust-proof barrel (57). The air supply pipe (54) is fixedly connected to the right side of the air valve (53). The torsion spring (55) is fixedly connected to the middle of the outer frame (51). The dynamic air bag is fixedly connected to the inner side of the torsion spring (55). The dust-proof barrel (57) is fixedly connected to the middle of the outer frame (51).

8. The powder pressing and molding equipment for powder metallurgy according to claim 7, characterized in that: The air delivery pipe (54) penetrates the middle of the outer frame (51), penetrates the inner side of the torsion spring (55), the air delivery pipe (54) is fixedly connected to the bottom end of the torsion airbag (56), the torsion spring (55) is fixedly connected to the bottom of the support platform (45), the feed barrel (21) is fixedly connected to the top of the outer frame (51), the press machine (1) is fixedly connected to the top of the outer frame (51), the support platform (45) is fixedly connected to the middle of the outer frame (51), and mesh holes are provided on the surface of the torsion airbag (56).

Images