Iron powder powder molding device for powder metallurgy

Abstract

The application discloses an iron powder powder forming device for powder metallurgy, and belongs to the technical field of powder forming devices. In order to solve the problem that the traditional iron powder powder forming device is inconvenient to ensure that the powder particle diameter entering the pressing groove conforms to the standard through the last filtering structure when the transmission of the iron powder is performed, and the iron powder stored in the traditional forming device is prone to superposition and obstruction among the powder particles in the absence of stirring, thereby forming a frozen state and being not conducive to the flow of the subsequent iron powder, and the structure for conveying the iron powder in the traditional iron powder powder forming device inevitably causes the problem of iron powder leakage; the rotating shaft drives the stirring blade to rotate, the stirring blade is staggered with the fixed piece part, the powder in the storage cavity is stirred and leaks into the feeding cavity, the powder in the feeding cavity is pushed into the forming cavity by the pushing arm, and the forming part is formed by the pressing of the pressing equipment.

Description

Technical Field

[0001] This invention relates to the field of powder forming equipment technology, specifically to an iron powder forming equipment for powder metallurgy. Background Technology

[0002] Powder molding is the process of compacting metal powder into a blank with a certain shape, size, density, and strength. It is one of the basic steps in powder metallurgy. In the process of metallurgy using iron powder, the iron powder is usually first fed into a pressing tank and compacted using a pressing device.

[0003] Traditional iron powder forming devices are not ideal for ensuring the diameter of powder particles entering the pressing tank meets standards through a final filtration structure during iron powder transport. Furthermore, without stirring, the stored iron powder in traditional devices is prone to overlapping and freezing, hindering subsequent iron powder flow. Leakage is inevitable in the iron powder conveying structure of traditional devices, which can lead to deviations in the conveying accuracy over time. It is also difficult to utilize a reciprocating lifting structure to collect leaked iron powder and reduce such occurrences.

[0004] To address the aforementioned problems, an iron powder forming device for powder metallurgy is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide an iron powder forming device for powder metallurgy, which solves the problem in the prior art that traditional iron powder forming devices easily cause the powder particles to overlap and obstruct each other during the transfer of iron powder, resulting in a frozen state.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an iron powder forming device for powder metallurgy, comprising a device housing and a working cavity that extends through the inside of the device housing. The working cavity is provided with a pressing device and a worktable. The pressing device is located directly above the worktable. A forming cavity is provided at the center of the worktable. A powder storage housing is movably provided on the upper side of the worktable. A conveying pipe is provided at the upper end of the powder storage housing. A pusher arm is provided on one side of the powder storage housing.

[0007] The powder storage housing includes a storage cavity at its upper interior and a conveying cavity at its lower interior. A fixed plate is fixedly installed at the lower interior of the storage cavity, and a rotating shaft is movably installed inside the storage cavity. A stirring blade is installed on the outer side of the lower end of the rotating shaft, and multiple sets of stirring blades are installed. The rotating shaft drives the stirring blades to rotate, so that the stirring blades are partially offset from the fixed plate, stirring the powder inside the storage cavity and letting it leak into the conveying cavity. The powder inside the conveying cavity is pushed by the pusher arm and enters the molding cavity. The powder is then pressed by the pressing device to form a molded part.

[0008] Furthermore, a forward and reverse motor is installed at the upper part of the powder storage chamber. The forward and reverse motor is connected to the rotating shaft through the shaft. A through groove is opened between the conveying chamber and the storage chamber, and the storage chamber and the conveying chamber are connected through the through groove.

[0009] Furthermore, an annular groove is provided at the lower end of the powder storage housing. The diameter of the annular groove is larger than the diameter of the conveying chamber. A lifting ring is fitted inside the annular groove. A driven component is provided at the upper end of the lifting ring. Two sets of driven components are provided, and the two sets of driven components are located inside the powder storage housing.

[0010] Furthermore, three sets of stirring blades are provided, and the three sets of stirring blades are in the same horizontal state. A first through groove is opened through the inside of the stirring blades, and the lower ends of the three sets of stirring blades are smoothly arranged.

[0011] Furthermore, the upper end of the fixing plate is provided with an isolation groove, and three sets of isolation grooves are provided. Each of the three sets of isolation grooves is provided with a second through groove, and multiple sets of second through grooves are provided. The fixing plate is provided with a mating straight cylindrical groove, and multiple sets of mating straight cylindrical grooves are provided. One end of the multiple sets of mating straight cylindrical grooves is located at the center of the fixing plate.

[0012] Furthermore, the three sets of stirring blades are correspondingly fitted inside the three sets of isolation grooves, and the positions of the multiple sets of first through grooves and multiple sets of second through grooves are not on the same axis.

[0013] Furthermore, the rotating shaft includes an upper shaft connected to the forward and reverse motor shaft and a lower shaft located directly below the upper shaft. A folded cloth is provided between the upper shaft and the lower shaft, and the diameter of the folded cloth is equal to the diameter of the upper shaft and the lower shaft.

[0014] Furthermore, a fitting post is provided at the uppermost end of the lower shaft, and the fitting post is fitted inside the upper shaft. A guide post is also fitted at the uppermost end of the lower shaft. One end of the guide post is connected to the upper shaft, and a connecting spring is provided on the outside of the guide post. Multiple sets of guide posts and connecting springs are provided. One end of each set of connecting springs is connected to the upper shaft, and the other end is connected to the upper end of the lower shaft.

[0015] Furthermore, a driven wheel is provided at the lower end of the lower shaft and inside the fixed plate, and two sets of driven wheels are provided. The driven assembly includes a pulley movably disposed inside the powder storage machine housing. A spiral cylinder is provided at the center of the lower end of the pulley. A spiral column is spirally disposed inside the lower end of the spiral cylinder. The lower end of the spiral column is fixedly connected to the lifting ring. One set of driven wheels is connected to the pulley of the same set via a belt, and the other set of driven wheels is connected to the pulley of the other set via a belt.

[0016] Furthermore, an arc groove is provided at the end of the lifting ring away from the spiral column, so that the molded part matches the molding cavity.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. This invention provides an iron powder forming device for powder metallurgy. The device uses a rotating shaft to drive a stirring blade, causing the stirring blade to partially offset from the fixed plate. This stirs the powder inside the storage chamber, causing it to leak into the conveying chamber. The powder is then pushed by a pusher arm into the forming chamber, where it is pressed into a molded part by a pressing device. This solves the problem of traditional iron powder forming devices where the powder is not easily filtered through a final filtration structure to ensure the diameter of the powder particles entering the pressing tank meets standards. Furthermore, in traditional forming devices, without stirring, the stored iron powder particles tend to overlap and freeze, hindering subsequent iron powder flow. The iron powder conveying structure in traditional iron powder forming devices inevitably suffers from iron powder leakage. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the powder storage housing and conveying pipe structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the planar structure of the powder storage housing of the present invention;

[0022] Figure 4 This is a schematic diagram of the fan blade and fixing plate structure of the present invention;

[0023] Figure 5 This is a schematic diagram of the planar structure of the rotating shaft of the present invention;

[0024] Figure 6 This is a schematic diagram of the driven component structure of the present invention;

[0025] Figure 7 This is a schematic diagram of the lifting ring structure of the present invention;

[0026] Figure 8This is a schematic diagram of the molded part structure of the present invention.

[0027] In the diagram: 1. Device housing; 2. Working chamber; 3. Pressing device; 4. Worktable; 5. Forming chamber; 6. Propulsion arm; 7. Powder storage housing; 71. Storage chamber; 72. Stirring blade; 721. First through groove; 73. Conveying chamber; 74. Fixing plate; 741. Isolation groove; 742. Second through groove; 743. Matching straight cylinder groove; 75. Through groove; 76. Forward and reverse motor; 77. Rotating shaft; 771. Upper shaft; 772. Lower shaft; 7721. Folded cloth; 7722. Guide post; 7723. Fitting post; 7724. Connecting spring; 7725. Driven wheel; 78. Driven assembly; 781. Pulley; 782. Spiral cylinder; 783. Spiral column; 79. Annular groove; 791. Lifting ring; 7911. Arc groove; 8. Conveying pipe; 9. Formed part. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] To address the technical problems of traditional iron powder forming devices, such as the inconvenience of using a final filtration structure to ensure the diameter of powder particles entering the pressing tank meets standards during iron powder transfer, and the tendency for stored iron powder to accumulate and freeze without stirring, hindering subsequent iron powder flow, the following solutions are proposed. Figures 1-5 As shown, the following preferred technical solutions are provided:

[0030] A powder forming device for iron powder in powder metallurgy includes a housing 1 and a working chamber 2 extending through the housing 1. The working chamber 2 contains a pressing device 3 and a worktable 4. The pressing device 3 is positioned directly above the worktable 4. A forming cavity 5 is located at the center of the worktable 4. A powder storage housing 7 is movably mounted on the upper side of the worktable 4. A conveying pipe 8 is mounted on the upper end of the powder storage housing 7. A pushing arm 6 is mounted on one side of the powder storage housing 7. The powder storage housing 7 includes a storage cavity 71 located at its upper end and a conveying cavity 73 located at its lower end. A fixing plate 74 is fixedly mounted on the lower end of the storage cavity 71. A rotating shaft 77 is movably mounted inside the storage cavity 71. Multiple sets of stirring blades 72 are mounted on the outer side of the lower end of the rotating shaft 77. The rotating shaft 77 drives the stirring blades 72 to rotate, causing the stirring blades 72 to partially offset from the fixing plate 74, thus stirring and draining the powder inside the storage cavity 71. The powder enters the feeding chamber 73 and is pushed by the pusher arm 6 into the forming chamber 5. It is then pressed by the pressing device 3 to form the molded part 9. A forward / reverse motor 76 is installed at the upper end of the powder storage housing 7. The forward / reverse motor 76 is connected to the rotating shaft 77 via a shaft. A through groove 75 is provided between the feeding chamber 73 and the storage chamber 71, and the storage chamber 71 and the feeding chamber 73 are connected by the through groove 75. An annular groove 7 is provided at the lower end of the powder storage housing 7. 9. The diameter of the annular groove 79 is larger than the diameter of the conveying chamber 73. A lifting ring 791 is fitted inside the annular groove 79. A driven component 78 is provided at the upper end of the lifting ring 791. Two sets of driven components 78 are provided. The two sets of driven components 78 are located inside the powder storage housing 7. Three sets of stirring blades 72 are provided. The three sets of stirring blades 72 are in the same horizontal state. A first through groove 721 is opened through the stirring blades 72. The lower ends of the three sets of stirring blades 72 are rounded.

[0031] The upper end of the fixed plate 74 is provided with an isolation groove 741, and three sets of isolation grooves 741 are provided. Each of the three sets of isolation grooves 741 has a second through groove 742 extending through it, and multiple sets of second through grooves 742 are provided. The fixed plate 74 has a mating straight cylindrical groove 743 inside, and multiple sets of mating straight cylindrical grooves 743 are provided. One end of the multiple sets of mating straight cylindrical grooves 743 is located at the center of the fixed plate 74. The three sets of stirring blades 72 are correspondingly fitted into the three sets of isolation grooves 741. The multiple sets of first through grooves 721 and multiple sets of second through grooves 742 are not on the same axis. The rotating shaft 77 includes an upper shaft 771 connected to the shaft of the forward and reverse motor 76 and a shaft located directly below the upper shaft 771. The lower shaft 772 is provided, and a folded cloth 7721 is provided between the upper shaft 771 and the lower shaft 772. The diameter of the folded cloth 7721 is equal to the diameter of the upper shaft 771 and the lower shaft 772. A fitting post 7723 is provided at the uppermost end of the lower shaft 772, and the fitting post 7723 is fitted inside the upper shaft 771. A guide post 7722 is also fitted at the uppermost end of the lower shaft 772. One end of the guide post 7722 is connected to the upper shaft 771, and a connecting spring 7724 is provided on the outside of the guide post 7722. Multiple sets of guide posts 7722 and connecting springs 7724 are provided. One end of the multiple sets of connecting springs 7724 is connected to the upper shaft 771, and the other end is connected to the upper end of the lower shaft 772.

[0032] Specifically, the entire process of the device requires the pusher arm 6 to push the powder inside the feeding chamber 73 into the molding chamber 5, where it is pressed by the pressing device 3 to form the molded part 9. When the powder inside the powder storage housing 7 enters the molding chamber 5, the rotating shaft 77 is driven to rotate by the forward and reverse motor 76, which in turn drives the stirring blade 72 to rotate. This causes the smooth lower part of the stirring blade 72 to leave the isolation groove 741. At this time, the fitting post 7723 fits into the upper shaft 771, the guide post 7722 fits into the lower shaft 772, and the connecting spring 7724 is compressed. When the stirring blade 72 refits into the corresponding isolation groove 741, the elasticity of the connecting spring 7724 will cause the stirring blade to rotate. The blade 72 is tightly fitted inside the isolation groove 741. Therefore, the multiple sets of first through grooves 721 and second through grooves 742 are not on the same vertical line. The powder inside the storage cavity 71 will not enter the conveying cavity 73. Consequently, the stirring blade 72 no longer obstructs the powder inside the storage cavity 71. The powder inside the storage cavity 71 will enter the conveying cavity 73 through the multiple sets of first through grooves 721, second through grooves 742 and through grooves 75. At this time, the powder has been filtered by the first through grooves 721 and second through grooves 742, which completes the final inspection process. The rotation of the stirring blade 72 will stir the powder, preventing the powder particles inside the storage cavity 71 from freezing and making it difficult for them to fall.

[0033] To address the inherent problem of iron powder leakage in traditional iron powder forming devices, which, over time, leads to deviations in the conveying structure's precision and hinders the use of reciprocating lifting mechanisms to collect leaked iron powder and reduce its occurrence, the following technical solutions are proposed. Figures 6-8 As shown, the following preferred technical solutions are provided:

[0034] A driven wheel 7725 is provided at the lower end of the lower shaft 772 and inside the fixed plate 74. Two sets of driven wheels 7725 are provided. The driven assembly 78 includes a pulley 781 movably disposed inside the powder storage housing 7. A spiral cylinder 782 is provided at the center of the lower end of the pulley 781. A spiral column 783 is spirally disposed inside the lower end of the spiral cylinder 782. The lower end of the spiral column 783 is fixedly connected to the lifting ring 791. One set of driven wheels 7725 is driven by a belt to the pulley 781 of the same set. The other set of driven wheels 7725 is driven by a belt to the pulley 781 of the same set. The belt is located inside the mating straight groove 743. An arc groove 7911 is provided at the end of the lifting ring 791 away from the spiral column 783. The molded part 9 matches the molding cavity 5.

[0035] Specifically, when the powder storage housing 7 moves towards the molding cavity 5, some powder will inevitably leak out between the lower end of the powder storage housing 7 and the worktable 4. The powder inside the feeding cavity 73 enters through the forward rotation of the rotating shaft 77 and the stirring blade 72. The rotation of the rotating shaft 77 will drive the driven wheel 7725 to rotate, which in turn causes the pulley 781 and the screw cylinder 782 to rotate. At this time, the lower end of the screw column 783 is embedded inside the powder storage housing 7, so the screw column 783 descends. Multiple sets of screw columns 783 will drive the lifting ring 791 to descend until the arc groove 7911 contacts the upper end of the worktable 4. At this time, the position of the arc groove 7911 and the worktable 4 are... The distance will be less than the distance between the lower end of the powder storage housing 7 and the worktable 4. As the powder storage housing 7 continues to move, the lifting ring 791 will scrape the powder left on the worktable 4 and enter the molding cavity 5, avoiding too much powder remaining on the upper end of the worktable 4, which would affect the pushing operation of the powder storage housing 7. When the powder inside the molding cavity 5 is full, the pushing arm 6 will drive the powder storage housing 7 away from the molding cavity 5. At this time, due to the contact between the powder storage housing 7 and the worktable 4, a large amount of powder inside the conveying cavity 73 will not leak. During this movement, the rotating shaft 77 rotates in the opposite direction. After rotation, the spiral column 783 drives the lifting ring 791 to rise, ready for the next use.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A powder forming apparatus for iron powder in powder metallurgy, comprising an apparatus housing (1) and a working chamber (2) extending through the interior of the apparatus housing (1), wherein a pressing device (3) and a worktable (4) are provided inside the working chamber (2), characterized in that: The pressing device (3) is located directly above the workbench (4). A forming cavity (5) is opened in the center of the workbench (4). A powder storage housing (7) is movably installed on the upper side of the workbench (4). A conveying pipe (8) is installed at the upper end of the powder storage housing (7). A push arm (6) is installed on one side of the powder storage housing (7). The powder storage housing (7) includes a storage cavity (71) located at its upper interior and a conveying cavity (73) located at its lower interior. A fixing plate (74) is fixedly installed at the lower interior of the storage cavity (71). A rotating shaft (77) is movably installed inside the storage cavity (71). A stirring blade (72) is installed on the outer side of the lower end of the rotating shaft (77). Multiple sets of stirring blades (72) are installed. The rotating shaft (77) drives the stirring blades (72) to rotate, causing the stirring blades (72) to partially offset from the fixing plate (74), thereby displacing the storage cavity (71). The powder is stirred inside and leaks into the conveying chamber (73). It is then pushed by the pusher arm (6) to move the conveying chamber (73). The powder enters the molding cavity (5) and is pressed by the pressing device (3) to form a molded part (9). Three sets of stirring blades (72) are provided, and the three sets of stirring blades (72) are in the same horizontal state. A first through groove (721) is provided inside the stirring blade (72), and the lower ends of the three sets of stirring blades (72) are rounded. The upper end of the fixing piece (74) is provided with an isolation groove (741), and the isolation groove (741) is provided in three sets. The three sets of isolation grooves (741) are all provided with a second through groove (742), and the second through groove (742) is provided in multiple sets. The fixing piece (74) is provided with a mating straight groove (743), and the mating straight groove (743) is provided in multiple sets. One end of the multiple sets of mating straight grooves (743) is located at the center of the fixing piece (74). The three sets of stirring blades (72) are fitted into the three sets of isolation grooves (741), and the positions of the multiple sets of first through grooves (721) and multiple sets of second through grooves (742) are not on the same axis; The rotating shaft (77) includes an upper shaft (771) connected to the shaft of the forward and reverse motor (76) and a lower shaft (772) located directly below the upper shaft (771). A folded cloth (7721) is provided between them, and the diameter of the folded cloth (7721) is equal to the diameter of the upper shaft (771) and the lower shaft (772); The uppermost end of the lower shaft (772) is provided with a fitting post (7723), and the fitting post (7723) is fitted inside the upper shaft (771). The uppermost end of the lower shaft (772) is also fitted with a guide post (7722). One end of the guide post (7722) is connected to the upper shaft (771), and a connecting spring (7724) is provided on the outside of the guide post (7722). Multiple sets of guide posts (7722) and connecting springs (7724) are provided. One end of the multiple sets of connecting springs (7724) is connected to the upper shaft (771), and the other end is connected to the upper end of the lower shaft (772).

2. The iron powder molding device for powder metallurgy according to claim 1, characterized by: A forward and reverse motor (76) is provided at the upper part of the inside of the powder storage housing (7). The forward and reverse motor (76) is connected to the rotating shaft (77) through the shaft. A through groove (75) is provided between the material conveying chamber (73) and the storage chamber (71), and the storage chamber (71) and the material conveying chamber (73) are connected through the through groove (75).

3. The iron powder molding device for powder metallurgy according to claim 2, characterized by: The lower end of the powder storage housing (7) is provided with an annular groove (79), the diameter of which is larger than the diameter of the conveying chamber (73). A lifting ring (791) is fitted inside the annular groove (79), and a driven component (78) is provided at the upper end of the lifting ring (791). Two sets of driven components (78) are provided, and the two sets of driven components (78) are located inside the powder storage housing (7).

4. The iron powder forming device for powder metallurgy according to claim 3, characterized in that: A driven wheel (7725) is provided at the lower end of the shaft (772) and inside the fixed plate (74). Two sets of driven wheels (7725) are provided. The driven assembly (78) includes a pulley (781) movably disposed inside the powder storage housing (7). A spiral cylinder (782) is provided at the center of the lower end of the pulley (781). A spiral column (783) is spirally disposed inside the lower end of the spiral cylinder (782). The lower end of the spiral column (783) is fixedly connected to the lifting ring (791). One set of driven wheels (7725) is connected to the pulley (781) of the same set via a belt. The other set of driven wheels (7725) is connected to the pulley (781) of the other set via a belt.

5. The iron powder molding device for powder metallurgy according to claim 4, characterized by: The lifting ring (791) has an arc groove (7911) at the end away from the spiral column (783), and the molding part (9) matches the molding cavity (5).

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