CN115090881B - Powder metallurgy injection molding device - Google Patents
Powder metallurgy injection molding device Download PDFInfo
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- CN115090881B CN115090881B CN202210807772.0A CN202210807772A CN115090881B CN 115090881 B CN115090881 B CN 115090881B CN 202210807772 A CN202210807772 A CN 202210807772A CN 115090881 B CN115090881 B CN 115090881B
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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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- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
- Casting Devices For Molds (AREA)
Abstract
The invention discloses a powder metallurgy injection molding device, which is provided with a frame, wherein a fixing box is fixed at one end of the upper end surface of the frame; comprising the following steps: the connecting box is fixed on the other side of the fixed box, and a hopper is arranged 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 mould 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 mould, which is far away from the supporting plate; the motor is arranged on the lower end face of the frame through a bolt, and is connected with the movable barrel through another belt pulley mechanism. This powder metallurgy injection molding device can carry out the multiple mixing between metal powder and the binder, 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 homogeneity that the material distributes 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
The powder metallurgy is to mix metal powder with binder to contact, after extrusion molding in the die cavity, after sintering and solidification, obtain corresponding metal piece, the powder needs to briefly use corresponding injection device in the process of entering the die cavity, for example, the powder metallurgy injection molding device … for processing complex-structure workpieces with the publication number of CN203184645U adopts the injection molding mode to push the metal powder into the die cavity of the die, the high-speed punch is not needed to be adopted for pressing in the molding process, the die does not need to bear larger impact force, deformation of the wall surface of the die cavity is avoided, and the quality of products is improved. However, the powder metallurgy injection molding device for processing the workpiece with the complex structure still has the following defects in the actual use process:
1. in the conventional injection molding device, before pushing the material into the injection cylinder, a structure for remixing the metal powder and the binder is lacking, so that partial powder and the binder are unevenly distributed, and the phenomenon of uneven strength in the subsequent molding process is caused;
2. and the part is easy to adhere to the inner wall of the forming cavity and is not easy to take out after being formed, so that the traditional injection forming device lacks a structure that metal powder is uniformly mixed in the forming cavity, and also lacks a structure that the lifting part is quickly separated from the forming cavity.
Aiming at the problems, innovative design is urgently needed on the basis of the original powder metallurgy injection molding device.
Disclosure of Invention
The invention aims to provide a powder metallurgy injection molding device, which aims to solve the problems that the prior art lacks a structure for remixing metal powder and a binder before pushing materials into an injection cylinder, so that partial powder and binder are unevenly distributed, and the traditional injection molding device lacks a structure for uniformly feeding the metal powder into a molding cavity and also lacks a structure for rapidly separating a lifting part from the molding cavity.
In order to achieve the above purpose, the present invention provides the following technical solutions: the powder metallurgy injection molding device is provided with a frame, wherein a fixed box is fixed at one end of the upper end face of the frame, a cylinder is arranged at one side of the fixed box, and a push rod is arranged on an output shaft of the cylinder;
comprising the following steps:
the connecting box is fixed on the other side of the fixed box, a hopper is arranged at the top of the connecting box, an injection cylinder is fixed on one side of the connecting box far away from the fixed box, a stirring shaft penetrates through an internal bearing of the hopper, and one end of the stirring shaft extending out of the hopper is connected with one another through a belt pulley mechanism and a movable rod;
the piston plate movably penetrates through the side wall of the injection cylinder, a second spring is wound on the outer side of the piston plate, a fixed box is fixed on the injection cylinder at the end part of the piston plate, the side surface of the fixed box is connected with the supporting plate through a gas pipe, the supporting plate is fixed at the other end of the upper end surface of the frame, and a discharge hole is formed in the center of the supporting plate;
the fixed mould is fixed on one side of the supporting plate, which is far away from the injection cylinder, one end of the fixed mould, which is far away from the supporting plate, is fixed with a fixed plate, the outer side of the fixed plate is movably sleeved with a movable mould, a fixed hole is formed at the joint of the movable mould and the fixed plate, and the inner wall of the fixed hole is fixed with a fixed block;
the motor is arranged on the lower end face of the frame through a bolt, the motor is connected with the movable barrel through another belt pulley mechanism, the end part of the movable barrel is connected with a screw rod in a threaded manner, and one end of the screw rod, far away from the movable barrel, is fixed on the side face of the movable die.
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 on the wire reel, is provided with the guide wheel 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 winding is 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 the 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, through the rotation of guide wheel when the haulage rope removes, and then promotes smoothness nature, and can drive the synchronous rotation of movable rod when the haulage rope receives the pulling.
Preferably, the vertical end of the piston plate slides and extends to the inside of the injection cylinder, the extending length of the piston plate is smaller than the distance between the end part of the push rod and the inner wall of the injection cylinder, the horizontal end of the piston plate slides in a fitting way with the inner wall of the fixed box, meanwhile, the section of the piston plate is of a T-shaped structure, when the piston plate is pushed by the push rod, the piston plate can slide in the fixed box, and when the push rod does not push the piston plate, the rebound force of the second spring can drive 2 groups of piston plates to restore to the original position.
Preferably, the fixed box and the piston plate are symmetrically arranged about the transverse axis of the injection cylinder, the fixed box is mutually communicated with the fixed cavity through the air pipe, the fixed cavity is arranged in the supporting plate, after the piston plate moves, the air in the fixed box can be pushed into the air pipe and then enter the fixed cavity, and when the piston plate moves reversely, the air in the fixed cavity can be pumped out through the air pipe.
Preferably, the inside activity in fixed chamber is provided with the baffle, and the baffle is about the horizontal axis symmetric distribution of backup pad to the vertical end of 2 baffles is laminated each other, after gas gets into 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 when 2 baffles relative movement.
Preferably, the side rotation of fixed plate is provided with the fly leaf, and the lower extreme of fly leaf passes through one of them third spring and fixed plate interconnect to the upper end of fly leaf is fixed with the gag lever post, and the one end of fly leaf is kept away from to the gag lever post simultaneously is inconsistent with the surface of fixed plate, when the fixed block moves right when contacting with the connecting plate, can drive the fly leaf of upper end and rotate, then when not contacting with the connecting plate, can drive the fly leaf reverse rotation through the rebound of below third spring to drive the gag lever post and strike the fixed plate, can guarantee the homogeneity that the inside metal powder of fixed mould distributes through the vibrations that produce like this.
Preferably, the top activity of fly leaf is provided with the connecting plate, and the connecting plate passes 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 direction that 2 group's fly leaves, gag lever post and connecting plate set up is opposite 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 part and fixed mould separation.
Preferably, the rotation range of connecting plate and fly leaf is 0-90, and can only rotate clockwise under the fly leaf initial condition of upper and lower both sides to can only anticlockwise rotation under the connecting plate initial condition of upper and lower both sides, the one end that the fly leaf was kept away from to the connecting plate simultaneously is less than the thickness of fixed orifices inner wall minimum interval, when the movable mould carries out compound die or split die, can realize the rotation of upside fly leaf or the rotation of downside fly leaf respectively, can not influence the removal of movable mould, can produce vibrations when removing again.
Preferably, the movable mould is formed into a sliding structure through the fixing hole and the fixing plate, the inner side of the fixing plate is attached to the fixing hole, a space is reserved between the outer side of the fixing plate and the fixing hole, the movable mould can be combined with the fixed mould in a sliding mode, when the movable mould is in contact with the fixing plate, the propelling of metal powder cannot be influenced, and after the movable mould is separated from the fixing plate, the formed part is conveniently taken out.
Compared with the prior art, the invention has the beneficial effects that: this powder metallurgy injection molding device can carry out the multitime and mix between metal powder and the binder, 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 homogeneity that the material distributes in the shaping intracavity, can accelerate the separation between part and the shaping chamber again, concrete content is as follows:
1. when the push rod moves leftwards to push out metal powder, the traction rope can be pulled to be prolonged, the arrangement of the push rod guide wheels can promote the smoothness of pulling the traction rope, and then the wire spool drives the movable rod to rotate, so that materials falling into the connecting box above the push rod can be secondarily stirred evenly;
2. when the push rod moves to be in contact with the piston plate, the piston plate can be driven to move in the fixed box, gas in the fixed box is pushed into the fixed cavity through the gas pipe, and the 2 baffles are driven to move in opposite directions, so that the discharge hole is in an open state, and convenient feeding is realized;
3. when the movable die moves to be matched with the die, the fixed block can be driven to be in contact with the connecting plate above, the movable plate is pushed to rotate, when the fixed block is not in contact with the connecting plate, the movable plate can be driven to reversely rotate through rebound of the third spring, and the fixed plate is knocked through the limiting rod, so that metal powder can be distributed more uniformly in the extrusion process by transmitting vibration generated to the fixed die, and when the movable die is separated from the die, the movable plate below can be driven to rotate to knock the fixed plate, and further products are separated from the fixed die in the separation process through the generated vibration acceleration.
Drawings
FIG. 1 is a schematic elevational view of the present invention;
FIG. 2 is a schematic illustration of a front cross-sectional structure of the junction box of the present invention;
FIG. 3 is a schematic diagram showing a cross-sectional structure of the portion A in FIG. 2 according to the present invention;
FIG. 4 is a schematic view of the front cross-section of the fixing case of the present invention;
FIG. 5 is a schematic view of the structure of the piston plate of the present invention after movement;
FIG. 6 is a schematic diagram of a front sectional structure of a movable mold according to the present invention;
FIG. 7 is an enlarged schematic view of the structure of FIG. 6B according to the present invention;
fig. 8 is a schematic diagram of the front section structure of the movable plate of the 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. a syringe; 8. a traction rope; 9. a guide wheel; 10. a wire spool; 11. a movable rod; 12. a first spring; 13. a pulley mechanism; 14. a stirring shaft; 15. a piston plate; 16. a second spring; 17. a fixed box; 18. a gas pipe; 19. a support plate; 20. a discharge hole; 21. a fixed cavity; 22. a baffle; 23. a fixed mold; 24. a fixing plate; 241. a movable plate; 242. a limit rod; 243. a connecting plate; 244. a third spring; 25. a movable mold; 26. a fixing hole; 27. a fixed block; 28. a motor; 29. a movable cylinder; 30. and a screw rod.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-8, the present invention provides a technical solution: the powder metallurgy injection molding device is provided with a frame 1, wherein a fixed box 2 is fixed at one end of the upper end surface of the frame 1, a cylinder 3 is arranged at one side of the fixed box 2, and a push rod 4 is arranged on an output shaft of the cylinder 3; comprising the following steps: the connecting box 5 is fixed on the other side of the fixed box 2, the hopper 6 is arranged at the top of the connecting box 5, the injection cylinder 7 is fixed on one side of the connecting box 5 far away from the fixed box 2, the stirring shaft 14 penetrates through an inner bearing of the hopper 6, and one end of the stirring shaft 14 extending out of the hopper 6 is connected with the movable rod 11 through the belt pulley mechanism 13; the piston plate 15 movably penetrates through the side wall of the injection cylinder 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 cylinder 7 at the end part of the piston plate 15, the side surface of the fixed box 17 is 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 frame 1, and a discharging hole 20 is formed in the center of the supporting plate 19; the fixed mould 23 is fixed on one side of the supporting plate 19 far away from the injection cylinder 7, a fixed plate 24 is fixed on one end of the fixed mould 23 far away from the supporting plate 19, a movable mould 25 is movably sleeved on the outer side of the fixed plate 24, a fixed hole 26 is formed at the joint of the movable mould 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 mounted on the lower end surface of the frame 1 through bolts, the motor 28 is connected with the movable cylinder 29 through the other belt pulley mechanism 13, the end part of the movable cylinder 29 is connected with a screw rod 30 in a threaded manner, and one end of the screw rod 30 far away from the movable cylinder 29 is fixed on the side surface 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 penetrates through the side wall of the injection tube 7 in a sliding manner, the other end of the traction rope 8 is wound on the wire reel 10, meanwhile, a guide wheel 9 is arranged on the injection tube 7 at the side of the traction rope 8, when the push rod 4 is pushed by the air cylinder 3 to move, the metal powder in the injection tube 7 can be pushed so as to realize the feeding of the metal powder, when the push rod 4 moves leftwards, the push rod can push the metal powder, the traction rope 8 can be pulled to move, and the traction rope 8 on the wire reel 10 is driven to extend, so that the wire reel 10 can be driven to rotate, and smoothness can be improved through rotation of the guide wheel 9 when the push rod 4 is pulled; the wire spool 10 is fixed at one end of the movable rod 11, the movable rod 11 penetrates through the inside of the connecting box 5, a first spring 12 is wound at the other end of the movable rod 11, which is close to the wire spool 10, and meanwhile, the other end of the movable rod 11 is connected with the stirring shaft 14 through a 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 into the connecting box 5 above the push rod 4 can be stirred again, the stirring shaft 14 can be driven to rotate through the transmission of the belt pulley mechanism 13 while the movable rod 11 rotates, the materials in the hopper 6 are stirred, after one-time pushing is finished, the push rod 4 moves in the opposite direction, so that an excessive traction rope 8 can be driven to automatically wind on the wire spool 10 through the rebound of the first spring 12, the metal powder can be stirred still, and after the push rod 4 moves to the right, the wire spool 10 is not wound any more, so that the movable rod 11 can be kept still, and the metal powder above the push rod 4 can be conveniently dropped for the next pushing operation;
as shown in fig. 1 and fig. 4 to 5, the vertical end of the piston plate 15 is slidably extended into the injection cylinder 7, the extended length of the piston plate 15 is smaller than the distance between the end of the push rod 4 and the inner wall of the injection cylinder 7, the horizontal end of the piston plate 15 is slidably attached to the inner wall of the fixed box 17, meanwhile, the section of the piston plate 15 is in a T-shaped structure, when the push rod 4 moves to push materials, the piston plate 15 can be contacted, and the piston plate 15 is 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 cylinder 7, the fixed box 17 is communicated with the fixed cavity 21 through the air pipe 18, the fixed cavity 21 is arranged in the supporting plate 19, and when the piston plate 15 moves, the air in the fixed box 17 can be pushed into the air 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, and the vertical ends of the 2 baffle plates 22 are mutually attached, when gas enters the fixed cavity 21, the 2 baffle plates 22 can be pushed to move in opposite directions, so that the discharge hole 20 is in an open state, the passage of metal powder is facilitated, when the push rod 4 moves reversely, the pushing of the piston plate 15 is released, the rebound of the second spring 16 can drive the piston plate 15 to restore the original position, the gas in the fixed cavity 21 is pumped out through the gas pipe 18, and thus the 2 baffle plates 22 relatively move to realize the blocking of the position of the discharge hole 20 without affecting the forming in the die;
as shown in fig. 1 and fig. 6 to 8, a movable plate 241 is rotatably provided at a side of the fixed plate 24, and a lower end of the movable plate 241 is connected with the fixed plate 24 through one of a third spring 244, and a limit lever 242 is fixed at an upper end of the movable plate 241, while one end of the limit lever 242 away from the movable plate 241 is abutted against a surface of the fixed plate 24, and after the pushing is completed, the movable mold 25 is driven to move toward the fixed mold 23 by the driving of the motor 28 and the driving of the other pulley mechanism 13, the movable cylinder 29 and the screw 30, and mold closing is performed so as to mold a product; 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, meanwhile, the directions of the 2 groups of movable plates 241, the limiting rods 242 and the connecting plate 243 are opposite, when the movable die 25 moves, the upper fixed block 27 can be driven to contact with the connecting plate 243 so as to drive the movable plate 241 to rotate, when the fixed block 27 is not contacted with the connecting plate 243, the movable plate 241 can be driven to reversely rotate so as to knock the fixed plate 24, so that the generated vibration can be transmitted to the fixed die 23, so that metal powder can be distributed more uniformly when the fixed block 27 contacts with the connecting plate 243 in the die clamping process, the lower movable plate 241 can be driven to rotate, and therefore, the lower movable plate 241 cannot rotate along with the connecting plate 243; the rotation ranges of the connecting plate 243 and the movable plate 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 plate 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 smaller 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 is kept in a static state, the lower movable plate 241 rotates to generate vibration, separation between a product and the fixed die 23 can be accelerated through the vibration, and the product is conveniently taken out; the sliding structure is constituteed through fixed orifices 26 and fixed plate 24 to movable mould 25, and the inboard of fixed plate 24 is laminated with fixed orifices 26 mutually to the outside of fixed plate 24 and fixed orifices 26 leave the space, when movable mould 25 and fixed plate 24 contact, pushes away the material at this moment and can avoid the metal powder to drop, and movable mould 25 removes when separating with fixed plate 24, conveniently takes out the fashioned product.
Working principle: as shown in fig. 1-8, metal powder and 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 movable rod 11 and a stirring shaft 14 can be driven to synchronously rotate by pulling a traction rope 8 so as to stir materials in the hopper 6, and the materials in a connecting box 5 can be further stirred, so that the uniformity of mixing between the metal powder and the binder is improved;
in the pushing process, the gas in the fixed box 17 is sent into the fixed cavity 21 through the contact between the push rod 4 and the piston plate 15, so that the baffle 22 is driven to be opened for convenient feeding, after feeding of metal powder is completed, the movable die 25 can be driven to move through the driving of the motor 28, die assembly between the movable die 25 and the fixed die 23 is realized, extrusion molding of products can be realized, meanwhile, in the moving process of the movable die 25, vibration force generated by rotation of the movable plate 241 can be driven, the metal powder in the molding cavity can be uniformly distributed, and separation between the post-stage products and the fixed die 23 can be accelerated.
Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.
Claims (2)
1. The powder metallurgy injection molding device is provided with a frame (1), wherein a fixed box (2) is fixed at one end of the upper end surface of the frame (1), a 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 cylinder (3);
characterized by comprising the following steps:
the connecting box (5) is fixed on the other side of the fixed box (2), the hopper (6) is mounted at the top of the connecting box (5), the injection cylinder (7) is fixed on one side, far away from the fixed box (2), of the connecting box (5), the 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 the movable rod (11) through the belt pulley mechanism (13);
the piston plate (15) is movably penetrated through the side wall of the injection cylinder (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 cylinder (7) at the end part of the piston plate (15), the side surface of the fixed box (17) is connected with the 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 frame (1), and a discharging hole (20) is formed in the center of the supporting plate (19);
the fixed mould (23) is fixed on one side of the supporting plate (19) far away from the injection cylinder (7), a fixed plate (24) is fixed at one end of the fixed mould (23) far away from the supporting plate (19), a movable mould (25) is movably sleeved on the outer side of the fixed plate (24), a fixed hole (26) is formed in the joint of the movable mould (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 arranged on the lower end face of the 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 connected with a screw rod (30) through threads, and one end of the screw rod (30) far away from the movable cylinder (29) is fixed on the side face of the movable die (25);
the side surface of the push rod (4) is fixedly connected with one end of the traction rope (8), the traction rope (8) penetrates through the side wall of the injection tube (7) in a sliding mode, the other end of the traction rope (8) is wound on the wire reel (10), and meanwhile a guide wheel (9) is arranged on the injection tube (7) at the side of the traction rope (8);
the wire spool (10) is fixed at one end of the movable rod (11), the movable rod (11) penetrates through the inside of the connecting box (5) through a bearing, a first spring (12) is wound at the other end of the movable rod (11) close to the wire spool (10), and meanwhile, the other end of the movable rod (11) is connected with the stirring shaft (14) through a belt pulley mechanism (13);
the vertical end of the piston plate (15) slides and extends to the inside of the injection cylinder (7), 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 fixed box (17) are in fit sliding, and meanwhile, the section of the piston plate (15) is of a T-shaped structure;
the fixed box (17) and the piston plate (15) are symmetrically arranged about the transverse axis of the injection cylinder (7), the fixed box (17) is communicated with the fixed cavity (21) through the air pipe (18), and the fixed cavity (21) is arranged in the supporting plate (19);
a baffle plate (22) is movably arranged in the fixed cavity (21), the baffle plates (22) are symmetrically distributed about the transverse axis of the supporting plate (19), and the vertical ends of the 2 baffle plates (22) are mutually attached;
the side surface 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), the upper end of the movable plate (241) is fixedly provided with a limiting rod (242), and meanwhile one end, far away from the movable plate (241), of the limiting rod (242) is abutted against the surface of the fixed plate (24);
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 groups of movable plates (241), the limiting rods (242) and the connecting plate (243) are opposite;
the rotation ranges of the connecting plate (243) and the movable plate (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 plate (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 plate (241), of the connecting plate (243) and the inner wall of the fixing hole (26) is smaller than the thickness of the fixing block (27).
2. A powder metallurgy injection molding apparatus according to claim 1, wherein: the movable mould (25) forms a sliding structure through the fixing holes (26) and the fixing plates (24), the inner sides of the fixing plates (24) are attached to the fixing holes (26), and spaces are reserved between the outer sides of the fixing plates (24) and the fixing holes (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210807772.0A CN115090881B (en) | 2022-07-11 | 2022-07-11 | Powder metallurgy injection molding device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210807772.0A CN115090881B (en) | 2022-07-11 | 2022-07-11 | Powder metallurgy injection molding device |
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| Publication Number | Publication Date |
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| CN115090881A CN115090881A (en) | 2022-09-23 |
| CN115090881B true CN115090881B (en) | 2023-09-15 |
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| CN116079050B (en) * | 2022-11-25 | 2023-07-25 | 广州市迅兴精密工业有限公司 | Metal powder injection molding equipment |
| 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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