CN115090881A - Powder metallurgy injection molding device - Google Patents
Powder metallurgy injection molding device Download PDFInfo
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- CN115090881A CN115090881A CN202210807772.0A CN202210807772A CN115090881A CN 115090881 A CN115090881 A CN 115090881A CN 202210807772 A CN202210807772 A CN 202210807772A CN 115090881 A CN115090881 A CN 115090881A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
- B22F3/225—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip by injection molding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/003—Apparatus, e.g. furnaces
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- Powder Metallurgy (AREA)
Abstract
The invention discloses a powder metallurgy injection molding device which is provided with a rack, wherein a fixed box is fixed at one end of the upper end surface of the rack; the method comprises the following steps: the connecting box is fixed on the other side of the fixed box, and a hopper is installed at the top of the connecting box; the piston plate movably penetrates through the side wall of the injection cylinder, and a second spring is wound on the outer side of the piston plate; the fixed die is fixed on one side of the supporting plate, which is far away from the injection cylinder, and a fixed plate is fixed at one end of the fixed die, which is far away from the supporting plate; the motor is installed on the lower end face of the rack through bolts and is connected with the movable barrel through another belt pulley mechanism. This powder metallurgy injection moulding device can mix between metal powder and the binder many times, and then guarantees the homogeneity that both mix, can guarantee like this that intensity is unified when subsequent shaping to can enough guarantee the even of material distribution in the shaping intracavity, can accelerate the separation between part and the shaping chamber again.
Description
Technical Field
The invention relates to the technical field of powder metallurgy, in particular to a powder metallurgy injection molding device.
Background
Powder metallurgy is through mixing metal powder and binder contact, after extrusion shaping in the die cavity, obtain corresponding metalwork after the sintering solidification, the powder is at the in-process that gets into the die cavity inside, need briefly use corresponding injection apparatus, for example, the powder metallurgy injection moulding device … of the complicated work piece of processing structure that publication number is CN203184645U adopts injection moulding's mode to push metal powder into the die cavity of mould, in the fashioned in-process, need not adopt high-speed drift to suppress, the mould need not bear great impact force, just also avoided the die cavity wall to take place deformation, the quality of product has been improved. However, the powder metallurgy injection molding device for processing the workpiece with the complicated structure still has the following defects in the actual use process:
1. in the conventional injection molding device, a structure for mixing metal powder and a binder again is lacked before a material is pushed into an injection cylinder, so that the phenomenon that part of the powder and the binder are not uniformly distributed is caused, and the phenomenon that the strength is not uniform during subsequent molding is caused;
2. and the part is after the shaping, easy adhesion is difficult for taking out at the shaping intracavity wall, therefore traditional injection moulding device had both lacked the metal powder and carried out even structure in getting into the shaping intracavity, still lacked the structure that promotes part and shaping intracavity quick separation.
In view of the above problems, innovative design based on the original powder metallurgy injection molding device is urgently needed.
Disclosure of Invention
The invention aims to provide a powder metallurgy injection molding device, which aims to solve the problems that the prior art does not have a structure for mixing metal powder and a bonding agent again before a material is pushed into an injection cylinder, so that partial powder and the bonding agent are not uniformly distributed, and the traditional injection molding device has no structure for uniformly mixing the metal powder in a molding cavity and also has no structure for improving the quick separation of a part and the molding cavity.
In order to achieve the purpose, the invention provides the following technical scheme: a powder metallurgy injection molding device is provided with a rack, wherein a fixed box is fixed at one end of the upper end face of the rack, an air cylinder is installed on one side of the fixed box, and a push rod is arranged on an output shaft of the air cylinder;
the method comprises the following steps:
the connecting box is fixed on the other side of the fixed box, a hopper is installed at the top of the connecting box, an injection tube is fixed on one side of the connecting box away from the fixed box, a stirring shaft penetrates through an inner bearing of the hopper, and one end of the stirring shaft, which extends out of the hopper, is connected with each other through a belt pulley mechanism and a movable rod;
the piston plate movably penetrates through the side wall of the injection tube, a second spring is wound on the outer side of the piston plate, a fixing box is fixed on the injection tube at the end part of the piston plate, the side surfaces of the fixing box are mutually connected with a supporting plate through a gas transmission pipe, the supporting plate is fixed at the other end of the upper end surface of the rack, and a discharge hole is formed in the center of the supporting plate;
the fixed die is fixed on one side of the supporting plate, which is far away from the injection tube, a fixed plate is fixed at one end of the fixed die, which is far away from the supporting plate, a movable die is movably sleeved on the outer side of the fixed plate, a fixed hole is formed at the joint of the movable die and the fixed plate, and a fixed block is fixed on the inner wall of the fixed hole;
the motor is installed on the lower end face of the rack through a bolt, the motor is connected with the movable cylinder through another belt pulley mechanism, the end part of the movable cylinder is connected with a screw rod in a threaded mode, and one end, far away from the movable cylinder, of the screw rod is fixed on the side face of the movable mold.
Preferably, the side of push rod and the one end fixed connection of haulage rope, and the haulage rope slides and runs through the lateral wall of injection tube to the other end winding of haulage rope is provided with the guide pulley on the injection tube of haulage rope avris simultaneously, can stimulate the haulage rope extension when the push rod moves left, and the haulage rope can automatic rolling on the wire reel when the push rod moves right.
Preferably, the wire reel is fixed in the one end of movable rod, and the movable rod bearing runs through in the inside of connecting box to the other end winding that the movable rod is close to the wire reel has first spring, and the other end of movable rod passes through belt pulley mechanism and (mixing) shaft simultaneously and links to each other, passes through the rotation of guide wheel when the haulage rope removes, and then promotes smooth and easy nature, and can drive the synchronous rotation of movable rod when the haulage rope receives the pulling.
Preferably, the vertical end of piston board slides and extends to the inside of injection tube, and the length that the piston board extends is less than the interval of push rod tip and injection tube inner wall to the horizontal end of piston board and the inner wall laminating of fixed box slide, and the cross-section of piston board is "T" shape structure simultaneously, can slide in fixed box when the piston board receives the push rod to promote, and when the push rod did not promote the piston board, can drive 2 piston boards through the resilience of second spring and resume the normal position.
Preferably, fixed box and piston plate all set up about the transversal axis symmetry of injection tube, and fixed box communicates each other through gas-supply pipe and fixed chamber to fixed chamber sets up in the inside of backup pad, can push the gas-supply pipe in the fixed box after the piston plate removes, reentries fixed intracavity, and during the piston plate reverse movement, can take out the gas in fixed intracavity through the gas-supply pipe again.
Preferably, the inside activity in fixed chamber is provided with the baffle, and the baffle is about the transversal axis symmetric distribution of backup pad to the vertical end of 2 baffles laminates each other, and after gaseous entering fixed intracavity portion, can drive the baffle and remove and let the discharge opening be in open state, and can carry out the shutoff to the discharge opening again during 2 baffles relative movement.
Preferably, the side of fixed plate is rotated and is provided with the fly leaf, and the lower extreme of fly leaf is through one of them third spring and fixed plate interconnect, and the upper end of fly leaf is fixed with the gag lever post, the one end that the fly leaf was kept away from to the gag lever post simultaneously and the surface of fixed plate are inconsistent, when the fixed block moved right and when the connecting plate contact, can drive the fly leaf rotation of upper end, then when not contacting with the connecting plate, resilience through below third spring can drive fly leaf antiport, and drive the gag lever post and strike the fixed plate, can guarantee the even of the inside metal powder distribution of fixed mould like this through the vibrations that produce.
Preferably, the top activity of fly leaf is provided with the connecting plate, and the connecting plate is through another third spring and fly leaf interconnect to the fly leaf is equidistant setting in the upper and lower both sides of fixed plate, and the opposite direction that 2 groups fly leaf, gag lever post and connecting plate set up simultaneously, when the fixed block moved left, can promote the fly leaf rotation of lower extreme, produces vibrations once more, plays the effect of accelerating the part and the separation of fixed mould.
Preferably, the rotation ranges of the connecting plate and the movable plate are 0-90 degrees, the movable plates on the upper side and the lower side can only rotate clockwise in the initial state, the connecting plates on the upper side and the lower side can only rotate anticlockwise in the initial state, meanwhile, the minimum distance between one end, far away from the movable plates, of the connecting plates and the inner wall of the fixed hole is larger than the thickness of the fixed block, when the movable die is matched or separated, the rotation of the upper side movable plate or the rotation of the lower side movable plate can be achieved respectively, the moving of the movable die cannot be influenced, and vibration can be generated during moving.
Preferably, the movable mould passes through the fixed orifices and the fixed plate constitution sliding construction, and the inboard and the fixed orifices laminating of fixed plate to the outside and the fixed orifices of fixed plate leave the space, merge between movable mould accessible gliding mode and the fixed mould, can not influence the propulsion of metal powder when movable mould and fixed plate contact, and the movable mould is separated with the fixed plate after, conveniently takes out fashioned part.
Compared with the prior art, the invention has the beneficial effects that: this powder metallurgy injection moulding device can mix between metal powder and the binder many times, and then guarantees the homogeneity that both mix, can guarantee like this that intensity is unified when follow-up shaping to can enough guarantee the even of material distribution in the shaping intracavity, can accelerate again the separation between part and the shaping chamber, concrete content is as follows:
1. when the push rod moves leftwards to push out the metal powder, the traction rope can be pulled to be lengthened, the smoothness of pulling the traction rope can be improved due to the arrangement of the push rod guide wheel, the movable rod is driven to rotate through the wire spool, so that materials falling in the connecting box above the push rod can be stirred uniformly for the second time, when the push rod moves reversely, the wire spool can be driven to rotate reversely through resilience of the first spring, automatic rolling of redundant traction ropes is achieved, and therefore the movable rod does not rotate when the push rod moves rightwards to a certain position, so that the metal powder falls down, and the material pushing for the second time is achieved;
2. when the push rod moves to be in contact with the piston plate, the piston plate can be driven to move in the fixing box, so that gas in the fixing box is pushed into the fixing cavity through the gas conveying pipe, and the 2 baffle plates are driven to move in opposite directions, so that the discharge hole is in an open state and convenient to feed, and when the push rod is not in contact with the piston plate, the piston plate can be driven to restore the original position through the resilience of the second spring, so that the gas in the fixing cavity can be sucked out through the gas conveying pipe, and the 2 baffle plates can be relatively moved to plug the discharge hole;
3. when the movable mould removes and carries out the compound die, can drive the connecting plate contact of fixed block and top, and promote the fly leaf and rotate, when the fixed block is not with the connecting plate contact, resilience through the third spring can drive fly leaf reverse rotation, and strike the fixed plate through the gag lever post, transmit to the fixed mould through the vibrations that produce like this, can let the more even of metal powder distribution in extrusion process, and when the movable mould divides the mould, can drive the fly leaf rotation of below and strike the fixed plate, and then separate from the fixed mould at the vibrations of branch mould in-process through the production with higher speed product.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic front sectional view of the junction box of the present invention;
FIG. 3 is a schematic cross-sectional view taken at A in FIG. 2 according to the present invention;
FIG. 4 is a schematic front sectional view of the fixing box according to the present invention;
FIG. 5 is a schematic diagram of the piston plate of the present invention after movement;
FIG. 6 is a schematic view of a front section of the moving mold according to the present invention;
FIG. 7 is an enlarged view of the structure at B in FIG. 6 according to the present invention;
FIG. 8 is a schematic view of a front cross-sectional structure of the movable plate of the present invention.
In the figure: 1. a frame; 2. a fixed box; 3. a cylinder; 4. a push rod; 5. a connection box; 6. a hopper; 7. an injection tube; 8. a hauling rope; 9. a guide wheel; 10. a wire spool; 11. a movable rod; 12. a first spring; 13. a belt pulley mechanism; 14. a stirring shaft; 15. a piston plate; 16. a second spring; 17. a fixing box; 18. a gas delivery pipe; 19. a support plate; 20. a discharge hole; 21. a fixed cavity; 22. a baffle plate; 23. a fixed mold; 24. a fixing plate; 241. a movable plate; 242. a limiting rod; 243. a connecting plate; 244. a third spring; 25. moving the mold; 26. a fixing hole; 27. a fixed block; 28. an electric motor; 29. a movable barrel; 30. and a screw rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-8, the present invention provides a technical solution: a powder metallurgy injection molding device is provided with a rack 1, wherein a fixed box 2 is fixed at one end of the upper end face of the rack 1, a cylinder 3 is installed on one side of the fixed box 2, and a push rod 4 is arranged on an output shaft of the cylinder 3; the method comprises the following steps: the connecting box 5 is fixed on the other side of the fixed box 2, the top of the connecting box 5 is provided with a hopper 6, one side of the connecting box 5, which is far away from the fixed box 2, is fixed with an injection tube 7, an inner bearing of the hopper 6 is penetrated with a stirring shaft 14, and one end of the stirring shaft 14, which extends out of the hopper 6, is mutually connected with a movable rod 11 through a belt pulley mechanism 13; the piston plate 15 movably penetrates through the side wall of the injection tube 7, a second spring 16 is wound on the outer side of the piston plate 15, a fixed box 17 is fixed on the injection tube 7 at the end part of the piston plate 15, the side surface of the fixed box 17 is mutually connected with a supporting plate 19 through a gas pipe 18, the supporting plate 19 is fixed at the other end of the upper end surface of the rack 1, and a discharge hole 20 is formed in the center of the supporting plate 19; the fixed die 23 is fixed on one side of the supporting plate 19 far away from the injection cylinder 7, one end of the fixed die 23 far away from the supporting plate 19 is fixed with a fixed plate 24, the outer side of the fixed plate 24 is movably sleeved with a movable die 25, a fixed hole 26 is formed at the joint of the movable die 25 and the fixed plate 24, and a fixed block 27 is fixed on the inner wall of the fixed hole 26; and the motor 28 is installed on the lower end face of the machine frame 1 through a bolt, the motor 28 is connected with the movable cylinder 29 through another belt pulley mechanism 13, the end part of the movable cylinder 29 is in threaded connection with a screw rod 30, and one end, away from the movable cylinder 29, of the screw rod 30 is fixed on the side face of the movable die 25.
As shown in fig. 1-3, the side surface of the push rod 4 is fixedly connected with one end of the traction rope 8, the traction rope 8 slides through the side wall of the injection tube 7, the other end of the traction rope 8 is wound on the wire spool 10, and the guide wheel 9 is arranged on the injection tube 7 at the side of the traction rope 8, when the cylinder 3 pushes the push rod 4 to move, the metal powder in the injection tube 7 can be pushed, so that the metal powder can be loaded, when the push rod 4 moves leftwards, not only can the material be pushed, but also the traction rope 8 can be pulled to move, and the traction rope 8 on the wire spool 10 is driven to extend, so that the wire spool 10 can be driven to rotate, and the smoothness can be improved by the rotation of the guide wheel 9 when the traction is performed; the wire spool 10 is fixed at one end of the movable rod 11, the bearing of the movable rod 11 penetrates through the inside of the connecting box 5, the first spring 12 is wound at the other end of the movable rod 11 close to the wire spool 10, meanwhile, the other end of the movable rod 11 is connected with the stirring shaft 14 through the belt pulley mechanism 13, when the wire spool 10 rotates, the movable rod 11 can be driven to synchronously rotate, so that metal powder falling in the connecting box 5 above the push rod 4 can be stirred uniformly again, when the movable rod 11 rotates, the stirring shaft 14 can be driven to rotate through the transmission of the belt pulley mechanism 13, materials in the hopper 6 are stirred, after one-time material pushing is completed, the push rod 4 moves in the opposite direction, so that the resilience of the first spring 12 can drive the redundant traction rope 8 to automatically wind on the wire spool 10, metal powder can be stirred, and after the push rod 4 moves to the limit, the wire spool 10 is not wound any more, so the movable rod 11 can keep static, and the metal powder above the push rod 4 can fall down conveniently for the next pushing operation;
as shown in fig. 1 and fig. 4-5, the vertical end of the piston plate 15 extends into the syringe 7 in a sliding manner, the extending length of the piston plate 15 is less than the distance between the end of the push rod 4 and the inner wall of the syringe 7, the horizontal end of the piston plate 15 and the inner wall of the fixed box 17 are in a sliding manner, and the cross section of the piston plate 15 is in a "T" shape, so that when the push rod 4 moves to push materials, the piston plate 15 can be contacted and the piston plate 15 can be pushed into the fixed box 17; the fixed box 17 and the piston plate 15 are symmetrically arranged about the transverse axis of the injection tube 7, the fixed box 17 is communicated with the fixed cavity 21 through the air conveying pipe 18, the fixed cavity 21 is arranged inside the supporting plate 19, and when the piston plate 15 moves, air in the fixed box 17 can be pushed into the air conveying pipe 18 and then enters the fixed cavity 21; the baffle plates 22 are movably arranged in the fixed cavity 21, the baffle plates 22 are symmetrically distributed about the transverse axis of the supporting plate 19, the vertical ends of the 2 baffle plates 22 are attached to each other, when gas enters the fixed cavity 21, the 2 baffle plates 22 can be pushed to move in opposite directions, the discharging hole 20 is in an open state, metal powder can conveniently pass through the discharging hole, the push rod 4 releases the push on the piston plate 15 when moving in the opposite direction, the piston plate 15 can be driven to restore the original position through the resilience of the second spring 16, the gas in the fixed cavity 21 is pumped out through the gas conveying pipe 18, the 2 baffle plates 22 move relatively, the position of the discharging hole 20 is blocked, and the forming generated in a die cannot be influenced;
as shown in fig. 1 and fig. 6 to 8, a movable plate 241 is rotatably disposed on the side of the fixed plate 24, the lower end of the movable plate 241 is connected to the fixed plate 24 through one of the third springs 244, a limiting rod 242 is fixed on the upper end of the movable plate 241, and one end of the limiting rod 242 away from the movable plate 241 is in contact with the surface of the fixed plate 24, when the material pushing is completed, the movable mold 25 is driven by the motor 28 and the transmission of the other pulley mechanism 13, the movable cylinder 29 and the screw rod 30 to move toward the fixed mold 23, and the mold is closed to form a product; the movable plate 241 is movably provided at the top thereof with a connection plate 243, and the connection plate 243 is connected to the movable plate 241 by another third spring 244, and the movable plates 241 are equally spaced at both upper and lower sides of the fixed plate 24, while the directions of the 2 sets of movable plates 241, the limiting rod 242 and the connecting plate 243 are opposite, the movable mold 25 can bring the upper fixed block 27 into contact with the connecting plate 243 when moving, thereby pushing the movable plate 241 to rotate, when the fixed block 27 is not in contact with the connecting plate 243, the movable plate 241 can be driven to rotate reversely to strike the fixed plate 24 through the resilience of the second spring 16, the vibration thus generated can be transmitted to the fixed die 23, so that the metal powder can be more uniformly distributed when being pressed during the mold closing process, when the lower fixed block 27 contacts the connecting plate 243, it can be pushed to rotate, so the lower movable plate 241 does not rotate along with the connecting plate 243; the rotation ranges of the connecting plate 243 and the movable plate 241 are both 0-90 degrees, the movable plates 241 on the upper side and the lower side can only rotate clockwise in the initial state, the connecting plates 243 on the upper side and the lower side can only rotate anticlockwise in the initial state, meanwhile, the minimum distance between one end of the connecting plate 243 far away from the movable plate 241 and the inner wall of the fixed hole 26 is larger than the thickness of the fixed block 27, when the movable die 25 is separated from the fixed die 23, the upper movable plate 241 keeps in a static state, and the lower movable plate 241 rotates to generate vibration, so that the separation between a product and the fixed die 23 can be accelerated through the vibration, and the product can be conveniently taken out; the movable mould 25 passes through fixed orifices 26 and fixed plate 24 constitution sliding construction, and the inboard and the fixed orifices 26 of fixed plate 24 laminate mutually to the outside and the fixed orifices 26 of fixed plate 24 leave the space, when movable mould 25 and fixed plate 24 contact, push away the material and can avoid metal powder to drop this moment, and when movable mould 25 moved and fixed plate 24 separation, conveniently take out fashioned product.
The working principle is as follows: as shown in fig. 1-8, metal powder and a binder to be injection molded are placed in a hopper 6, then a cylinder 3 pushes a push rod 4 to move for feeding, and in the feeding process, a pull rope 8 is pulled to drive a movable rod 11 and a stirring shaft 14 to synchronously rotate so as to stir the material in the hopper 6 and further stir the material in a connecting box 5, so that the uniformity of mixing between the metal powder and the binder is improved;
in the material pushing process, gas in the fixed box 17 can be sent into the fixed cavity 21 through contact between the push rod 4 and the piston plate 15, so that the baffle plate 22 is driven to be opened to facilitate material feeding, after the metal powder is fed, the movable die 25 can be driven to move through driving of the motor 28, and die assembly between the movable die and the fixed die 23 is realized, so that extrusion forming of products can be realized, and meanwhile, in the moving process of the movable die 25, the metal powder in the forming cavity can be uniformly distributed, and separation between later-stage products and the fixed die 23 can be accelerated through driving vibration force generated by rotation of the movable die 241.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (10)
1. A powder metallurgy injection molding device is provided with a rack (1), wherein a fixed box (2) is fixed at one end of the upper end face of the rack (1), an air cylinder (3) is installed at one side of the fixed box (2), and a push rod (4) is arranged on an output shaft of the air cylinder (3);
it is characterized by comprising:
the connecting box (5) is fixed on the other side of the fixed box (2), the hopper (6) is installed at the top of the connecting box (5), an injection tube (7) is fixed on one side, far away from the fixed box (2), of the connecting box (5), a stirring shaft (14) penetrates through an inner bearing of the hopper (6), and one end, extending out of the hopper (6), of the stirring shaft (14) is connected with a movable rod (11) through a belt pulley mechanism (13);
the piston plate (15) movably penetrates through the side wall of the injection tube (7), a second spring (16) is wound on the outer side of the piston plate (15), a fixing box (17) is fixed on the injection tube (7) at the end part of the piston plate (15), the side surfaces of the fixing box (17) are connected with a supporting plate (19) through a gas conveying pipe (18), the supporting plate (19) is fixed at the other end of the upper end surface of the rack (1), and a discharge hole (20) is formed in the center of the supporting plate (19);
the injection device comprises a fixed die (23) fixed on one side, away from an injection cylinder (7), of a supporting plate (19), a fixed plate (24) is fixed at one end, away from the supporting plate (19), of the fixed die (23), a movable die (25) is movably sleeved on the outer side of the fixed plate (24), a fixed hole (26) is formed in the connecting position of the movable die (25) and the fixed plate (24), and a fixed block (27) is fixed on the inner wall of the fixed hole (26);
the motor (28) is installed on the lower end face of the rack (1) through a bolt, the motor (28) is connected with the movable cylinder (29) through another belt pulley mechanism (13), the end part of the movable cylinder (29) is in threaded connection with the screw rod (30), and one end, far away from the movable cylinder (29), of the screw rod (30) is fixed on the side face of the movable mold (25).
2. A powder metallurgy injection molding apparatus according to claim 1, wherein: the side of push rod (4) and the one end fixed connection of haulage rope (8), and haulage rope (8) slide and run through the lateral wall of injection tube (7) to the other end winding of haulage rope (8) is provided with guide wheel (9) on injection tube (7) of haulage rope (8) avris simultaneously on wire reel (10).
3. A powder metallurgy injection molding apparatus according to claim 2, wherein: wire reel (10) are fixed in the one end of movable rod (11), and movable rod (11) bearing runs through in the inside of connecting box (5) to the other end winding that movable rod (11) are close to wire reel (10) has first spring (12), and the other end of movable rod (11) passes through belt pulley mechanism (13) and (mixing) shaft (14) link to each other simultaneously.
4. A powder metallurgy injection molding apparatus according to claim 1, wherein: the vertical end of the piston plate (15) extends into the injection cylinder (7) in a sliding manner, the extending length of the piston plate (15) is smaller than the distance between the end part of the push rod (4) and the inner wall of the injection cylinder (7), the horizontal end of the piston plate (15) and the inner wall of the fixing box (17) are attached and slide, and meanwhile, the cross section of the piston plate (15) is of a T-shaped structure.
5. A powder metallurgy injection molding apparatus according to claim 1, wherein: the fixed box (17) and the piston plate (15) are symmetrically arranged about a transverse axis of the injection cylinder (7), the fixed box (17) is communicated with the fixed cavity (21) through the air conveying pipe (18), and the fixed cavity (21) is arranged inside the supporting plate (19).
6. The powder metallurgy injection molding apparatus according to claim 5, wherein: the inside activity of fixed chamber (21) is provided with baffle (22), and baffle (22) about the horizontal axis symmetric distribution of backup pad (19) to the vertical end of 2 baffles (22) is laminated each other.
7. A powder metallurgy injection molding apparatus according to claim 1, wherein: the side of the fixed plate (24) is rotatably provided with a movable plate (241), the lower end of the movable plate (241) is connected with the fixed plate (24) through one of the third springs (244), a limiting rod (242) is fixed at the upper end of the movable plate (241), and one end, away from the movable plate (241), of the limiting rod (242) is abutted to the surface of the fixed plate (24).
8. The powder metallurgy injection molding apparatus according to claim 7, wherein: the top of the movable plate (241) is movably provided with a connecting plate (243), the connecting plate (243) is connected with the movable plate (241) through another third spring (244), the movable plate (241) is arranged at equal intervals on the upper side and the lower side of the fixed plate (24), and meanwhile, the directions of the 2 sets of movable plates (241), the limiting rods (242) and the connecting plate (243) are opposite.
9. The powder metallurgy injection molding apparatus according to claim 8, wherein: the rotating ranges of the connecting plates (243) and the movable plates (241) are 0-90 degrees, the movable plates (241) on the upper side and the lower side can only rotate clockwise in the initial state, the connecting plates (243) on the upper side and the lower side can only rotate anticlockwise in the initial state, and meanwhile the minimum distance between one end, far away from the movable plates (241), of the connecting plates (243) and the inner wall of the fixing hole (26) is larger than the thickness of the fixing block (27).
10. A powder metallurgy injection molding apparatus according to claim 1, wherein: the movable mold (25) forms a sliding structure through the fixing hole (26) and the fixing plate (24), the inner side of the fixing plate (24) is attached to the fixing hole (26), and a space is reserved between the outer side of the fixing plate (24) and the fixing hole (26).
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CN202210807772.0A CN115090881B (en) | 2022-07-11 | 2022-07-11 | Powder metallurgy injection molding device |
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CN202210807772.0A CN115090881B (en) | 2022-07-11 | 2022-07-11 | Powder metallurgy injection molding device |
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CN115090881A true CN115090881A (en) | 2022-09-23 |
CN115090881B CN115090881B (en) | 2023-09-15 |
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CN116079050A (en) * | 2022-11-25 | 2023-05-09 | 广州市迅兴精密工业有限公司 | Metal powder injection molding equipment |
CN116900316A (en) * | 2023-09-12 | 2023-10-20 | 江苏金物新材料有限公司 | Metal injection molding device with self-cleaning function |
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CN116079050A (en) * | 2022-11-25 | 2023-05-09 | 广州市迅兴精密工业有限公司 | Metal powder injection molding equipment |
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CN116900316B (en) * | 2023-09-12 | 2023-11-28 | 江苏金物新材料有限公司 | Metal injection molding device with self-cleaning function |
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