CN117655323A - Powder metallurgy die-casting forming device - Google Patents
Powder metallurgy die-casting forming device Download PDFInfo
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- CN117655323A CN117655323A CN202410120651.8A CN202410120651A CN117655323A CN 117655323 A CN117655323 A CN 117655323A CN 202410120651 A CN202410120651 A CN 202410120651A CN 117655323 A CN117655323 A CN 117655323A
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- 238000004663 powder metallurgy Methods 0.000 title claims abstract description 30
- 238000004512 die casting Methods 0.000 title claims abstract description 20
- 239000002184 metal Substances 0.000 claims abstract description 89
- 239000000843 powder Substances 0.000 claims abstract description 83
- 238000007599 discharging Methods 0.000 claims abstract description 59
- 230000008093 supporting effect Effects 0.000 claims abstract description 53
- 238000001125 extrusion Methods 0.000 claims abstract description 22
- 230000007246 mechanism Effects 0.000 claims description 25
- 238000003825 pressing Methods 0.000 claims description 16
- 238000007493 shaping process Methods 0.000 claims description 13
- 239000002994 raw material Substances 0.000 claims description 4
- 238000000748 compression moulding Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000005299 abrasion Methods 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 238000009704 powder extrusion Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000012840 feeding operation Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Powder Metallurgy (AREA)
Abstract
The invention discloses a powder metallurgy die-casting forming device, which relates to the technical field of powder metallurgy and comprises a lower die and an upper die, wherein a forming round core is arranged in the lower die, and the upper die, the forming round core and the lower die are mutually matched to realize die-casting forming of metal powder, and the device further comprises: the discharging unit comprises a supporting ring and a jacking ring, the jacking ring is arranged in the lower die in a sliding fit mode, the supporting ring is fixedly arranged on the inner wall between the lower die and the forming round core, the supporting ring is used for connecting the lower die and the forming round core and is used for supporting the jacking ring, the bottom end of the jacking ring is provided with the discharging ring which is used for providing power for the jacking ring, the metal powder is subjected to compression molding treatment through the upper die, the lower die and the forming round core, the pressure of the upper die on the metal powder is borne by the jacking ring and the supporting ring, the supporting ring is fixedly arranged on the inner wall of the lower die, the extrusion force is not caused on the discharging ring, and the efficiency of powder metallurgy is improved.
Description
Technical Field
The invention relates to the technical field of powder metallurgy, in particular to a powder metallurgy die-casting forming device.
Background
Powder metallurgy is known as a process technique for producing metal powders or for producing metal materials, composite materials and various types of articles from metal powders (or a mixture of metal powders and non-metal powders) as a raw material by forming and sintering. At present, the powder metallurgy technology is widely applied to the fields of transportation, machinery, electronics, aerospace, weapons, biology, new energy, information, nuclear industry and the like, and becomes one of the branches with the most development activity in new material science. The powder metallurgy technology has a series of advantages of obvious energy conservation, material saving, excellent performance, high product precision, good stability and the like, is very suitable for mass production, and needs extrusion molding treatment of powder in a die when the powder metallurgy is subjected to compression molding, so that metal powder is pressed into a pressed compact meeting the requirements.
The invention provides a production process of a powder metallurgy manufactured part, which comprises the following steps of: step one: mixing, namely preparing powder metallurgy materials according to the proportion of the components, and uniformly mixing the materials at normal temperature: step two: compression molding, namely filling the uniformly mixed material into a mold, and pressing the material into a pressed compact with the size meeting the requirement by using the mold; step three: step four, shaping, namely cooling and shaping the sintered blank to enable the sintered blank to reach the size required by a drawing; machining, namely machining the shaped part by using a lathe; step six: and (3) steam treatment: step seven: and (3) coating, namely coating the inner hole and the end face of the product subjected to steam treatment, and forming a polymer wear-resistant layer on the surface. The invention has the beneficial effects that: the powder metallurgy die can be formed at one time, has high precision, can process the advantage of complex parts of a structure, can finish the traditional complex process at one time, greatly reduces the production cost, reduces the energy consumption and achieves the aims of energy conservation and emission reduction.
When the metal powder in the prior art is subjected to compression molding, an upper die is required to carry out extrusion molding treatment on the metal powder in a lower die, the force generated by the upper die during extrusion is born by a discharging mechanism in the lower die, the discharging mechanism bears the force generated by the upper die during powder extrusion molding for a long time, the abrasion on a transmission component of the discharging mechanism is too large, and the discharging mechanism is frequently failed, so that the efficiency of powder metallurgy is reduced.
Disclosure of Invention
The invention aims to provide a powder metallurgy die-casting forming device which is used for solving the problems in the prior art.
In order to achieve the above object, the present invention provides the following technical solutions:
the utility model provides a powder metallurgy die-casting forming device, includes lower mould and last mould, be provided with the shaping circle core in the lower mould, go up and enclose the die-casting shaping that forms the chamber in order to realize metal powder between mould and shaping circle core and the lower mould, still include:
the discharging unit comprises a supporting ring and a jacking ring, wherein the jacking ring is arranged in the forming cavity in a sliding fit mode, the supporting ring is fixedly arranged on the inner wall between the lower die and the forming round core, the supporting ring is used for connecting the lower die and the forming round core and used for supporting the jacking ring, and the bottom end of the jacking ring is provided with the discharging ring which is used for providing power for the jacking ring.
The metal powder forming device comprises a lower die, a forming circular core, a lifting ring, an upper die, a lower die, a forming circular core and a lifting ring, wherein the lower die is connected with the forming circular core in a sleeved mode, the lifting ring is connected with the forming circular core in a sliding mode, and the lifting ring is connected with the forming circular core in a sleeved mode.
Above-mentioned, the discharging unit still includes pneumatic cylinder and I-shaped round bar, the discharging ring bottom is provided with the perforation, and sliding mounting has I-shaped round bar in the perforation, and I-shaped round bar is including two horizontal parts that set up relatively and connect in the vertical portion at two horizontal part middle parts, and vertical portion slidable mounting is in the perforation, shaping circle core bottom is provided with the pneumatic cylinder, and the output of pneumatic cylinder is connected with the horizontal part at I-shaped round bar top.
Above-mentioned, evenly be provided with a plurality of telescopic links along its circumference direction between the lower wall surface of the horizontal part at I-shaped round bar top and the ejection of compact ring bottom, be provided with return spring in the telescopic link and be connected between I-shaped round bar top inner wall and the ejection of compact ring bottom.
Above-mentioned, the outer wall and the lower mould looks sliding connection of support ring, the inner wall and the shaping circle core looks sliding connection of support ring, a plurality of grooves of wearing have evenly been seted up along its circumference direction in the middle part of support ring, and the top of ejection of compact ring evenly is provided with a plurality of branches along its circumference direction, and branch and the mutual interlude cooperation of groove of wearing use.
Above-mentioned, the bottom of jacking ring has evenly offered a plurality of slots along its circumference direction, each branch top is provided with an inserted block respectively, and each the inserted block with each mutually support between the slot and use, each slot inner wall and each the mutual piece of inhaling of plug top one-to-one is provided with the mutual piece of inhaling.
Above-mentioned, set up hollow chamber in the shaping circle core, be provided with vibration mechanism in the hollow chamber, it is used for vibrating the metal powder to reduce the space between the metal powder.
The top end of the lower die is provided with a flat plate so as to collect the formed metal powder in a discharging manner.
Above-mentioned, two slide rails are installed to the symmetry on the flat board, and two slide rails divide to be arranged in the relative both sides of shaping die cavity, install feed cylinder jointly through sliding fit's mode between two slide rails, and the bottom and the flat board of feed cylinder support tightly each other, and feed cylinder is used for metal powder raw materials to carry the operation, feed cylinder is perpendicular cross-section for isosceles trapezoid's cone cylinder or cone cylinder, and one side that the feed cylinder kept away from the lower mould also is connected with the inlet pipe on the lateral wall at top promptly.
The upper die is provided with the pressing unit, and the pressing unit is used for providing pressing force for the upper die.
The invention has the beneficial effects that: the metal powder is subjected to compression molding treatment through the upper die, the lower die and the molding round core, the pressure of the upper die to the metal powder is borne by the jacking ring and the supporting ring, the supporting ring is fixedly arranged on the inner wall of the lower die, the extrusion force can not be caused to the discharging ring, and the efficiency of powder metallurgy is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a top view of FIG. 1 in accordance with the present invention;
FIG. 3 is a schematic cross-sectional view of the structure at A-A of FIG. 2 in accordance with the present invention;
FIG. 4 is a schematic view of the partial cross-sectional structure at M of FIG. 3 according to the present invention;
FIG. 5 is a schematic view of the partial cross-sectional structure of the N-site of FIG. 3 according to the present invention;
FIG. 6 is a schematic view showing a cross-sectional structure at B-B of FIG. 2 according to the present invention;
FIG. 7 is a schematic view of the partial cross-sectional structure at L of FIG. 6 according to the present invention;
FIG. 8 is a schematic perspective view of an active circular plate according to the present invention;
FIG. 9 is a schematic cross-sectional view of the supporting ring of the present invention.
Reference numerals illustrate:
1. a lower die; 11. forming a round core; 12. a hollow cavity; 13. a flat plate; 14. a slide rail; 15. a feed cylinder; 16. a feed pipe; 17. a groove; 18. a cleaning plate; 19. a spring is abutted tightly; 2. an upper die; 3. a discharging unit; 31. a support ring; 32. a jacking ring; 33. a discharge ring; 34. a hydraulic cylinder; 35. an I-shaped round rod; 36. perforating; 37. a telescopic rod; 38. a return spring; 39. penetrating a groove; 310. a support rod; 311. a slot; 312. inserting blocks; 4. a vibration mechanism; 41. a vibration motor; 42. an active circular plate; 43. an active slot; 44. a straight rod; 45. sliding the round rod; 46. a straight groove; 47. a flat groove; 48. knocking the rod; 49. a buffer spring; 5. a pressing unit; 51. a U-shaped frame; 52. pressing down the motor; 53. a threaded rod; 54. square rods; 55. a triangle; 56. a chute; 57. a Z-shaped rod; 58. pushing the round rod.
Detailed Description
In order to make the technical scheme of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.
As shown in fig. 1 to 9, the powder metallurgy die-casting forming device provided by the embodiment of the invention includes a lower die 1 and an upper die 2, wherein a forming round core 11, that is, an inner die, is disposed in the lower die 1, and the upper die 2 is matched with the forming round core 11 and the lower die 1 to realize extrusion forming of the metal powder, and further includes:
the discharging unit 3 comprises a supporting ring 31 and a jacking ring 32, the jacking ring 32 is arranged in the forming cavity in a sliding fit mode, the supporting ring 31 is fixedly arranged at the bottom of the forming cavity, the supporting ring 31 is used for connecting the lower die 1 and the forming round core 11 and is used for supporting the jacking ring 32, and the bottom end of the jacking ring 32 is provided with a discharging ring 33 which is used for providing power for the jacking ring 32.
Specifically, through the annular forming cavity formed between the lower die 1 and the forming round core 11, the corresponding formed annular powder metallurgy part is covered at the top of the forming cavity when the upper die is extruded, the upper die 2 is mutually sleeved and matched with the lower die 1 and the forming round core 11, metal powder is conveyed into the forming cavity between the lower die 1 and the forming round core 11 until the metal powder is filled into the forming cavity between the lower die 1 and the forming round core 11, the jacking ring 32 slides and seals the bottom between the lower die 1 and the forming round core 11, so that the metal powder cannot slide into the lower die 1, a certain extrusion force is applied to the upper die 2, so that the upper die 2 performs extrusion forming operation on the metal powder in the part between the lower die 1 and the forming round core 11, after the traditional metal powder is formed, two modes of taking out the metal powder forming part are adopted, one mode is that the lower die 1 slides towards the bottom end of the lower die, the position of the jacking ring 32 is kept unchanged, the metal powder forming part slides out of the lower die 1 in a passive mode, and the feeding mode is inconvenient to cause the feeding mode; secondly, the transmission mechanism arranged at the bottom end of the jacking ring 32 pushes the jacking ring 32 to lift so as to push the metal powder forming part out of the lower die 1, when the upper die 2 applies pressure to the metal powder and the jacking ring 32, the pressure applied to the jacking ring 32 is borne by the discharge ring 33 and the transmission mechanism at the bottom end of the jacking ring, the abrasion to the transmission mechanism is large, and the phenomenon of damage to the transmission mechanism frequently occurs, in the embodiment, the pressure applied to the metal powder and the jacking ring 32 by the upper die 2 is borne by the supporting ring 31, and the supporting ring 31 is fixedly arranged on the lower die, so that the abrasion of the jacking ring 32 to the transmission mechanism at the bottom end of the jacking ring is reduced, the frequency of replacing the transmission mechanism is reduced, and the efficiency of metal powder extrusion forming is improved.
Further, an annular forming cavity is formed between the lower die 1 and the forming round core 11, the jacking ring 32 slides in the forming cavity to realize discharging of the metal powder forming part, the upper die 2 is sleeved with the forming round core 11 and the lower die 1 in a sliding manner, namely, the upper die 2 moves downwards in the forming cavity to extrude the metal powder, specifically, after the metal powder enters into the forming cavity formed by the lower die 1, the jacking ring 32 and the forming round core 11, the upper die 2 is matched with the forming round core 11 and the lower die 1, so that the upper die 2 performs extrusion forming operation on the metal powder, and after the metal powder forming part is obtained by extrusion, the metal powder forming part is pushed out of the lower die 1 through the jacking ring 32, so as to obtain the metal powder forming part.
Further, the discharging unit 3 further includes a hydraulic cylinder 34 and an i-shaped round rod 35, the bottom end of the discharging ring 33 is provided with a perforation 36, the i-shaped round rod 35 is slidably mounted in the perforation 36, the i-shaped round rod 35 includes two horizontal parts which are oppositely arranged and a vertical part which is connected to the middle of the two horizontal parts, the vertical part is slidably mounted in the perforation 36, the bottom end of the forming round core 11 is provided with the hydraulic cylinder 34, the output end of the hydraulic cylinder 34 is connected with the horizontal part at the top end of the i-shaped round rod 35, specifically, when the metal powder forming part is obtained and needs to be pushed out of the lower die 1, the hydraulic cylinder 34 is started to enable the i-shaped round rod 35 to slide towards the top end, the upper wall surface of the horizontal part at the bottom end of the i-shaped round rod 35 is enabled to abut against the bottom end of the discharging ring 33, the i-shaped round rod 35 drives the discharging ring 33 towards the top end of the i-shaped round rod through the inner wall at the bottom end, the middle part of the discharging ring 33 is hollow, the opening is formed in the middle of the supporting ring 31, the top end of the discharging ring 33 passes through the opening of the supporting ring 31 and the top end of the supporting ring 32 to be connected with the horizontal part at the top end of the i-shaped round rod 32, specifically, when the metal powder forming part is needed to be pushed out of the metal powder forming part, and the metal powder forming part is slid towards the top end, and the top end is pushed up and the top end.
Preferably, a plurality of telescopic rods 37 are uniformly arranged between the lower wall surface of the horizontal part at the top end of the I-shaped round rod 35 and the bottom end of the discharging ring 33 along the circumferential direction of the lower wall surface, a return spring 38 is arranged in the telescopic rods 37 and is used for connecting the inner wall at the top end of the I-shaped round rod 35 with the bottom end of the discharging ring 33, and specifically, (1) when the hydraulic cylinder 34 drives the I-shaped round rod 35 to slide towards the top end of the I-shaped round rod 35, the I-shaped round rod 35 drives the telescopic rods 37 to carry out stretching operation, so that the telescopic rods 37 are pulled to the longest position (namely, the telescopic rods 37 reach the length limit), at the moment, the return spring 38 has certain pulling force on the discharging ring 33, and the I-shaped round rod 35 drives the discharging ring 33 to slide towards the top end through the telescopic rods 37, and does not need the inner wall at the bottom end of the I-shaped round rod 35 to be in contact with the bottom end of the discharging ring 33, but before the inner wall at the bottom end of the I-shaped round rod 35 is in contact with the bottom end of the discharging ring 33, the I-shaped round rod 35 is pulled to the longest position, and the I-shaped round rod 35 pulls the top end of the discharging ring 33 to push the discharging ring 32 to slide towards the metal piece 32 through the top end of the discharging ring 32, so that the powder is pushed by the top end of the I-shaped round rod 33; (2) When the metal powder forming part slides out of the lower die 1, the hydraulic cylinder 34 drives the I-shaped round rod 35 to slide towards the bottom end of the lower die 1, the I-shaped round rod 35 firstly contracts the telescopic rod 37, the return spring 38 is in a compressed state, the manual I-shaped round rod 35 drives the discharging ring 33 to slide towards the bottom end of the lower die through the telescopic rod 37 to an initial position, namely, the discharging ring 33 does not provide lifting force for the lifting ring 32 any more, the lifting ring 32 slides onto the supporting ring 31 under the action of gravity, and finally, the hydraulic cylinder 34 is started to drive the I-shaped round rod 35 to slide towards the top end of the lifting ring, so that the I-shaped round rod 35 drives the telescopic rod 37 to slide towards the top end of the lifting ring until the return spring 38 in the telescopic rod 37 is restored to the initial position (namely, the return spring 38 is in the original length position), namely, the initial position of the discharging ring 33.
Because the extrusion force generated when the upper die 2 extrudes and forms the metal powder in the part between the lower die 1 and the forming circular core 11 is larger, the extrusion force born by the metal powder is transmitted to the supporting ring 31 by the jacking ring 32, the supporting ring 31 can be broken due to the fact that the supporting ring 31 is stressed by the upper die 2 and the jacking ring 32 for a long time, the pressure on the jacking ring 32 is transferred to the discharging ring 33 at the moment, the pressure born by the traditional discharging ring 33 is transferred to the transmission mechanism, a certain sliding gap exists between the discharging ring 33 and the I-shaped circular rod 35 (because the telescopic rod 37 and the return spring 38 can stretch out and draw back to a certain extent, when the discharging ring 33 is stressed by the telescopic rod 38, the discharging ring 33 can provide a certain buffering force for the supporting ring 31, and the telescopic rod 37 can provide a certain pulling force for the discharging ring 33 when the discharging ring 33 is stressed by the telescopic rod, so that the discharging ring 33 is stressed by the certain pressure, and the hydraulic cylinder 34 cannot be impacted by a certain amount.
Further, the outer wall of the supporting ring 31 is slidably connected with the lower die 1, the inner wall of the supporting ring 31 is slidably connected with the forming round core 11, a plurality of through grooves 39 are uniformly formed in the middle of the supporting ring 31 along the circumferential direction of the supporting ring 31, a plurality of supporting rods 310 are uniformly formed at the top end of the discharging ring 33 along the circumferential direction of the supporting ring, the supporting rods 310 are respectively in one-to-one corresponding insertion fit with the through grooves 39, and in particular, as the supporting ring 31 needs to carry out supporting operation on the discharging ring 33 and fix the forming round core 11 in the lower die 1, a plurality of supporting rods 310 are required to be arranged on the discharging ring 33 and penetrate through the through grooves 39 to enable the discharging ring 33 to eject the jacking ring 32 out of the lower die 1, when the hydraulic cylinder 34 drives the discharging ring 33 to slide towards the top end of the hydraulic cylinder 34 through the I-shaped round rod 35, the discharging ring 33 drives the supporting rods 310 to penetrate through the through grooves 39 and the bottom ends of the jacking ring 32, and the supporting rods 310 are mutually abutted with the supporting rods 33 and the supporting rods 310 pushing metal powder forming pieces out of the lower die 1 through the jacking ring 32.
Further, a plurality of slots 311 are uniformly formed at the bottom end of the jacking ring 32 along the circumferential direction of the jacking ring, an insert 312 is respectively arranged at the top end of each supporting rod 310, the insert 312 and each slot 311 are mutually matched for use, mutually attracting interpupillaries are correspondingly arranged on the inner wall of each slot 311 and the top end of each insert 312, specifically, when the supporting rod 310 passes through the through slot 39 and is mutually abutted with the bottom end of the jacking ring 32, the insert 312 on the supporting rod 310 is inserted into the slot 311, the inter-suction pieces (preferably magnets or magic tapes) in the insert 312 and the slot 311 are mutually abutted, so that the jacking ring 32 cannot rotate when the discharging ring 33 moves towards the bottom end of the jacking ring through the supporting rod 310, the insert 312 on the supporting rod 310 drives the jacking ring 32 to slide towards the bottom end of the jacking ring without sliding towards the bottom end of the jacking ring through the self gravity, the jacking ring 32 is prevented from rotating when the jacking ring 32 slides towards the bottom end of the jacking ring until the inter-suction pieces are separated from each other, the jacking ring 32 is enabled to be just separated from the bottom end of the jacking ring 32, and then the jacking ring 32 can be conveniently punched in the through slot 39.
Preferably, the hollow cavity 12 is formed in the forming round core 11, the vibration mechanism 4 is disposed in the hollow cavity 12 and is used for vibrating metal powder to reduce gaps between the metal powder, the vibration mechanism 4 includes a vibration motor 41 and a driving round plate 42, the vibration motor 41 is disposed on an inner wall of a bottom end of the hollow cavity 12, the driving round plate 42 is mounted at an output end of the vibration motor 41, the driving groove 43 is formed at a top end of the driving round plate 42, the driving groove 43 is a plurality of arc surfaces concave toward a center position of the driving round plate 42, positions of the concave arc surfaces are protruding portions to form the driving groove 43, a plurality of straight grooves 46 are uniformly formed on an inner wall of a top end of the hollow cavity 12 along a circumferential direction of the hollow cavity, a straight rod 44 is mounted in each straight groove 46 in a sliding fit manner, a sliding round rod 45 is disposed at a bottom end of each straight rod 44, and the sliding round rod 45 is mounted in the driving groove 43 in a sliding fit manner.
Specifically, after the metal powder fills the part between the lower die 1 and the forming round core 11, due to the larger gap between the metal powder, when the upper die 2 extrudes and forms the metal powder, a certain empty layer exists, after the metal powder fills the part between the lower die 1 and the forming round core 11, the vibration motor 41 is started to drive the driving round plate 42 to rotate, in the process of rotating the driving round plate 42, the sliding round rod 45 slides along the track of the driving groove 43, due to the concave arc surface and the convex part at the connecting position arranged on the driving groove 43, the sliding round rod 45 slides along the track of the driving groove 43, due to the limit effect of the straight groove 46 on the straight rod 44, when the sliding round rod 45 slides from the convex part at the connecting position on the driving groove 43 to the concave arc surface on the driving groove 43, the sliding round rod 45 drives the straight rod 44 to be far away from one end of the inner wall of the hollow cavity 12, when the concave arc surface on the driven groove 45 slides to the convex part at the connecting position on the driving groove 43, the straight rod 45 drives the straight rod 44 to be close to the inner wall of the hollow cavity 12, so that the sliding round rod 44 can conveniently impact the inner wall of the hollow cavity 12 of the metal powder, and the hollow round core 44 is convenient to impact the inner wall of the metal powder 1, and the hollow round core 44 is formed by the sliding round rod 44 gradually.
Further, if the jacking ring 32 is clamped at the top of the forming cavity and cannot move downwards after discharging, the vibration mechanism 4 can be started to reset the jacking ring 32.
Preferably, the end of each straight rod 44 near one side of the inner wall of the hollow cavity 12 is provided with a flat groove 47, a knocking rod 48 is installed in the flat groove 47 in a sliding fit manner, the knocking rod 48 and the inner wall of the flat groove 47 are connected through a buffer spring 49, specifically, when the time of knocking vibration of the inner wall of the hollow cavity 12 by the straight rod 44 is long, the straight rod 44 has certain abrasion, until the concave circular arc surface on the driven groove of the sliding round rod 45 slides to the convex part of the connecting position on the driving groove 43, the length of the straight rod 44 is not enough to the inner wall of the hollow cavity 12, so that the knocking rod 48 is arranged at the end of the straight rod 44, the sliding round rod 45 drives the straight rod 44 to slide towards one end near the inner wall of the hollow cavity 12, the knocking rod 48 drives the inner wall of the hollow cavity 12 to perform knocking operation, and due to the buffer effect of the buffer spring 49, the knocking rod 48 has enhanced knocking effect on the inner wall of the hollow cavity 12, and even if certain abrasion exists when the knocking rod 48 is in knocking vibration, the pushing of the buffer spring 49, the knocking rod 48 can always perform knocking operation on the inner wall of the hollow cavity 12, metal powder vibration effect is reduced, and metal powder extrusion forming effect is improved.
Further, the top end of the lower die 1 is provided with a flat plate 13, so as to collect the formed metal powder, specifically, after the lower die 1 extrudes the metal powder, and when the jacking ring 32 pushes the metal powder formed part out of the lower die 1 and is the same as the horizontal plane of the flat plate 13, the collection mechanism (not shown in the figure) arranged on the flat plate 13 is used for collecting the metal powder formed part, which is common knowledge in the field and is not repeated.
Further, two sliding rails 14 are symmetrically installed on the flat plate 13, the two sliding rails 14 are respectively arranged on two opposite sides of the forming cavity, a feeding cylinder 15 is installed between the two sliding rails 14 in a sliding fit mode, the bottom end of the feeding cylinder 15 and the flat plate 13 are mutually abutted, the feeding cylinder 15 is used for conveying metal powder raw materials, the feeding cylinder 15 is a conical cylinder body or a conical cylinder body with an isosceles trapezoid vertical section, a feeding pipe 16 is connected to one side, namely the side wall of the top, of the feeding cylinder 15 far away from the lower die 1, specifically, when metal powder is required to be conveyed to a part between the lower die 1 and the forming round core 11, the feeding pipe 16 conveys the metal powder into the feeding cylinder 15, the feeding cylinder 15 is driven to slide to a position, far away from one side of the lower die 1 (namely the initial position of the feeding cylinder 15), along the track of the sliding rail 14, to a position right above the lower die 1 and the forming round core 11, and the feeding cylinder 15 is mutually abutted with the flat plate 13, so that the feeding cylinder 15 conveys the metal powder to a part between the lower die 1 and the forming round core 11, and the metal powder is conveyed to the position between the lower die 1 and the forming round core 11, and the position of the metal powder is formed to finish the forming round core 11, and the position of the forming round core 11 after the metal powder is completely and the forming round core is finished, and the position is finished, and the forming round core is finished.
Further, the upper die 2 is provided with a pressing unit 5, the pressing unit 5 is configured to provide pressing force for the upper die 2, the pressing unit 5 includes a U-shaped frame 51, two inverted U-shaped frames 51 are provided at the top ends of the sliding rails 14, a linear reciprocating mechanism is provided on an inner wall of the top end of the U-shaped frame 51, an output end of the linear reciprocating mechanism is connected with the upper die 2, specifically, when the upper die 2 is required to perform extrusion molding on metal powder, the linear reciprocating mechanism is started to drive the upper die 2 to slide from a position far away from one end of the lower die 1 (i.e., an initial position of the upper die 2) to the bottom end thereof, so that the upper die 2 performs extrusion molding operation on the metal powder in the lower die 1 and the molding round core 11, and when the upper die 2 completes extrusion molding on the metal powder, the linear reciprocating mechanism is started to drive the upper die 2 to slide to an initial position towards the top end thereof, so that extrusion molding operation on the metal powder of the upper die 2 can be completed.
Preferably, the linear reciprocating mechanism includes a pressing motor 52, a threaded rod 53 is disposed at an output end of the pressing motor 52, a square rod 54 is mounted at a top end of the upper die 2, the square rod 54 is mounted on an inner wall of the U-shaped frame 51 in a sliding fit manner, a thread groove is formed at a top end of the square rod 54, the threaded rod 53 is mounted in the thread groove in a thread fit manner, a triangle 55 is disposed on a side wall of the square rod 54, which is close to the feeding barrel 15, a bevel edge of the triangle 55 is inclined downwards from a side far from the square rod 54 to a side close to the square rod 54, a bevel groove 56 is formed on the triangle 55, an inclined direction of the bevel groove 56 is parallel to the bevel edge of the triangle 55, two Z-shaped rods 57 are symmetrically disposed at a top end of the feeding barrel 15, a pushing round rod 58 is disposed at a top end between inner walls of the two Z-shaped rods 57, and the pushing round rod 58 is mounted in the bevel groove 56 in a sliding fit manner.
Specifically, (1) when the linear reciprocating mechanism is required to drive the upper die 2 to slide towards the bottom end thereof, the lower motor 52 is started to drive the threaded rod 53 to rotate clockwise, the threaded rod 53 drives the square rod 54 and the upper die 2 to slide towards the bottom end side thereof in a threaded fit manner (because the square rod 54 is arranged on the inner wall of the U-shaped frame 51 in a sliding fit manner, the square rod 54 cannot rotate when the threaded rod 53 rotates), so that the lower die 1 performs extrusion molding operation on metal powder, the triangular plate 55 is driven to slide towards the bottom end thereof in the process of moving the square rod 54 towards the bottom end thereof, and in the process of sliding the triangular plate 55 towards the bottom end thereof, the pushing round bar 58 slides along the track of the chute 56 (the pushing round bar 58 slides from one side of the chute 56 close to the square bar 54 to one side of the chute 56 far away from the square bar 54), and as the slide rail 14 has a certain limit on the feeding barrel 15, the pushing round bar 58 drives the Z-shaped bar 57 to slide to one side far away from the square bar 54, and the Z-shaped bar 57 drives the feeding barrel 15 to slide to one side far away from the square bar 54 (namely, the feeding barrel 15 slides to an initial position from a position right above the lower die 1 and the forming round core 11), so that the lower die 1 can not influence the pressing of the lower die 1 when the lower die 1 extrudes metal powder; (2) When the linear reciprocating mechanism is required to drive the upper die 2 to slide towards the top end of the lower die, the lower piezoelectric motor 52 is started to drive the threaded rod 53 to rotate anticlockwise, the threaded rod 53 drives the square rod 54 and the upper die 2 to slide towards the top end side of the lower die through a threaded fit mode, so that the lower die 1 slides to an initial position, the triangular plate 55 is driven to slide towards the top end of the lower die in the process of moving the square rod 54 towards the top end of the lower die, the pushing round rod 58 slides along the track of the chute 56 in the process of sliding the triangular plate 55 towards the top end of the lower die (the pushing round rod 58 slides towards the side, close to the square rod 54, of the chute 56 from the side, away from the chute 56, of the square rod 54), the sliding rail 14 has a certain limit, the Z-shaped rod 57 drives the feed cylinder 57 to slide towards the side, close to the square rod 54 (namely, the feed cylinder 15 slides from the initial position to the position right above the lower die 1 and the forming round core 11), when the lower die 1 releases extrusion forming of metal powder and moves to the initial position, and when the feeding cylinder 15 moves to the initial position, the metal cylinder 1 can move to the extrusion forming round core 1 and the metal cylinder 1 to the bottom end of the metal cylinder, and the metal cylinder 15 can simultaneously perform extrusion forming operation of the metal cylinder 1 and the metal cylinder 15 to the extrusion cylinder.
Preferably, the bottom end of the feeding cylinder 15 is provided with a groove 17, a cleaning plate 18 is installed in the groove 17 in a sliding fit manner, and the cleaning plate 18 is connected with the inner wall of the groove 17 through a supporting spring 19, specifically, when the feeding cylinder 15 performs feeding operation on metal powder, due to the supporting effect of the supporting spring 19, the cleaning plate 18 can push the metal powder remained on the flat plate 13 to a part between the lower die 1 and the forming round core 11, so that the waste of the metal powder is reduced.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the invention, which is defined by the appended claims.
Claims (10)
1. The utility model provides a powder metallurgy die-casting forming device, includes lower mould and last mould, be provided with the shaping circle core in the lower mould, go up and enclose the die-casting shaping that forms the chamber in order to realize metal powder between mould and shaping circle core and the lower mould, its characterized in that still includes:
the discharging unit comprises a supporting ring and a jacking ring, wherein the jacking ring is arranged in the forming cavity in a sliding fit mode, the supporting ring is fixedly arranged on the inner wall between the lower die and the forming round core, the supporting ring is used for connecting the lower die and the forming round core and used for supporting the jacking ring, and the bottom end of the jacking ring is provided with the discharging ring which is used for providing power for the jacking ring.
2. A powder metallurgy die casting apparatus according to claim 1, wherein: and a forming cavity is formed between the lower die and the forming round core combination, the jacking ring slides in the forming cavity to realize the discharging of the metal powder forming part, and the upper die is sheathed with the forming round core and the lower die in a sliding manner to realize the extrusion forming of the metal powder.
3. A powder metallurgy die casting apparatus according to claim 1, wherein: the discharging unit further comprises a hydraulic cylinder and an I-shaped round rod, a perforation is formed in the bottom end of the discharging ring, the I-shaped round rod is mounted in the perforation in a sliding mode, the I-shaped round rod comprises two horizontal portions which are arranged oppositely and a vertical portion which is connected to the middle of the two horizontal portions, the vertical portion is mounted in the perforation in a sliding mode, the hydraulic cylinder is arranged at the bottom end of the forming round core, and the output end of the hydraulic cylinder is connected with the horizontal portion of the top end of the I-shaped round rod.
4. A powder metallurgy die casting apparatus according to claim 3, wherein: a plurality of telescopic rods are uniformly arranged between the lower wall surface of the horizontal part at the top end of the I-shaped round rod and the bottom end of the discharging ring along the circumferential direction of the lower wall surface, return springs are arranged in the telescopic rods, and the inner wall at the top end of the I-shaped round rod is connected with the bottom end of the discharging ring.
5. A powder metallurgy die casting apparatus according to claim 1, wherein: the outer wall of support ring and lower mould sliding connection mutually, the inner wall of support ring and shaping circle core sliding connection mutually, a plurality of grooves of wearing have evenly been seted up along its circumference direction in the middle part of support ring, and the top of ejection of compact ring evenly is provided with a plurality of branches along its circumference direction, and branch and the mutual interlude cooperation of groove of wearing use.
6. A powder metallurgy die casting apparatus according to claim 5, wherein: the bottom of jacking ring has evenly offered a plurality of slots along its circumference direction, each branch top is provided with an inserted block respectively, and each the inserted block with each mutually support between the slot and use, each slot inner wall with each the mutual piece of inhaling of plug top one-to-one is provided with the mutual piece of inhaling.
7. A powder metallurgy die casting apparatus according to claim 1, wherein: a hollow cavity is formed in the forming round core, and a vibration mechanism is arranged in the hollow cavity and used for vibrating the metal powder so as to reduce gaps among the metal powder.
8. A powder metallurgy die casting apparatus according to claim 1, wherein: the top end of the lower die is provided with a flat plate so as to collect the formed metal powder in a discharging manner.
9. A powder metallurgy die casting apparatus according to claim 8, wherein: two sliding rails are symmetrically arranged on the flat plate, the two sliding rails are arranged on two opposite sides of the forming cavity respectively, a feeding barrel is jointly arranged between the two sliding rails in a sliding fit mode, the bottom end of the feeding barrel is mutually abutted against the flat plate, the feeding barrel is used for conveying metal powder raw materials, the feeding barrel is a conical cylinder body or a conical cylinder body with an isosceles trapezoid vertical section, and a feeding pipe is connected to one side, away from the lower die, of the feeding barrel, namely, the side wall of the top.
10. A powder metallurgy die casting apparatus according to claim 1, wherein: the upper die is provided with a pressing unit, and the pressing unit is used for providing pressing force for the upper die.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410120651.8A CN117655323A (en) | 2024-01-29 | 2024-01-29 | Powder metallurgy die-casting forming device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410120651.8A CN117655323A (en) | 2024-01-29 | 2024-01-29 | Powder metallurgy die-casting forming device |
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| CN202410120651.8A Pending CN117655323A (en) | 2024-01-29 | 2024-01-29 | Powder metallurgy die-casting forming device |
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| JPS6473003A (en) * | 1987-09-12 | 1989-03-17 | Yamaha Motor Co Ltd | Compacting apparatus for extruding metal powder |
| CN202106031U (en) * | 2011-05-31 | 2012-01-11 | 莱州长和粉末冶金有限公司 | Compacting die for inner conical ring formed by powder metallurgy |
| KR20210113845A (en) * | 2020-03-09 | 2021-09-17 | 서순식 | Segment or tip forming device using ungrained metal powder |
| CN218310856U (en) * | 2022-08-30 | 2023-01-17 | 山东富蓝动力科技有限公司 | Metal powder injection molding straightening machine |
| CN220073268U (en) * | 2023-04-03 | 2023-11-24 | 浙江衢州永丰金属制品有限公司 | Wear-resisting powder metallurgy bush forming die |
| CN117102482A (en) * | 2023-10-07 | 2023-11-24 | 海宁捷胜金属粉末科技有限公司 | Stainless steel metal powder metallurgy forming die |
-
2024
- 2024-01-29 CN CN202410120651.8A patent/CN117655323A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6473003A (en) * | 1987-09-12 | 1989-03-17 | Yamaha Motor Co Ltd | Compacting apparatus for extruding metal powder |
| CN202106031U (en) * | 2011-05-31 | 2012-01-11 | 莱州长和粉末冶金有限公司 | Compacting die for inner conical ring formed by powder metallurgy |
| KR20210113845A (en) * | 2020-03-09 | 2021-09-17 | 서순식 | Segment or tip forming device using ungrained metal powder |
| CN218310856U (en) * | 2022-08-30 | 2023-01-17 | 山东富蓝动力科技有限公司 | Metal powder injection molding straightening machine |
| CN220073268U (en) * | 2023-04-03 | 2023-11-24 | 浙江衢州永丰金属制品有限公司 | Wear-resisting powder metallurgy bush forming die |
| CN117102482A (en) * | 2023-10-07 | 2023-11-24 | 海宁捷胜金属粉末科技有限公司 | Stainless steel metal powder metallurgy forming die |
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