CN217701354U

CN217701354U - Powder injection molding device for preventing air holes

Info

Publication number: CN217701354U
Application number: CN202221749705.XU
Authority: CN
Inventors: 王乐进; 郭乐凯; 殷德霞; 姜吉伦
Original assignee: Longkou Jingyi Industry And Trade Co ltd
Current assignee: Longkou Jingyi Industry And Trade Co ltd
Priority date: 2022-07-08
Filing date: 2022-07-08
Publication date: 2022-11-01
Anticipated expiration: 2032-07-08

Abstract

The utility model discloses a powder injection moulding device in gas pocket belongs to powder injection moulding technical field. The utility model discloses in, including the base, the both sides of base top all are fixed and are equipped with the stand, and the top fixedly connected with diaphragm of two stands, and the middle part of two stand insides all is fixed and is equipped with the pneumatic cylinder, and the flexible end of two pneumatic cylinders all is fixedly connected with the dead lever, and the bottom of the relative one side of two stands all is seted up the spout with two dead levers matched with, and the middle part of two dead lever bottoms all is fixedly connected with the connecting rod; can make more even that the feed mixes through agitator motor and stirring screw, the excitation that two shock dynamo produced can make the gaseous come-up of barrel inner wall and feed inside, because the bottom of injection piston is the arc of epirelief, the gas of feed passes through the round hole and discharges in the barrel, prevents to have the bubble to remain in the barrel to electric putter drives the plunger and plugs up the round hole when the feed spills over, has reduced the possibility that the gas pocket appears.

Description

Powder injection molding device for preventing air holes

Technical Field

The utility model belongs to the technical field of powder injection moulding, especially, relate to a powder injection moulding device in gas pocket.

Background

Metal Injection Molding (MIM) is a new powder metallurgy near-net-shape Molding technology that is derived from the plastic Injection Molding industry, and it is well known that plastic Injection Molding technology is cheap and produces various products with complicated shapes, but the strength of plastic products is not high, and in order to improve the performance, metal or ceramic powder can be added into plastic and Metal particles can be directly used to obtain products with higher strength and good wear resistance. The production process comprises the following steps: metal powder + adhesive → mixing → injection molding → degreasing → sintering → post-treatment; the injection molding aims at obtaining a defect-free uniform-particle MIM molding blank body with a required shape, granular feed is heated to a certain high temperature to enable the granular feed to have fluidity, then the granular feed enters a cylinder body through a feed delivery pipe, is injected into a mold cavity through injection to be cooled to obtain a blank body with a required shape and certain rigidity, and then the blank body is taken out from the mold cavity to obtain an MIM molding blank; however, in the existing injection molding device, the screw is used for injection, air is easily introduced into the feed in the process of moving the feed, so that air holes are caused, the probability of producing inferior products is greatly improved, and the problem that how to effectively discharge the air holes is needed to be solved now is solved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to solve the problem of easy generation of air holes, an air hole-proof powder injection molding device is provided.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a powder injection moulding device who prevents gas pocket, the on-line screen storage device comprises a base, the both sides on base top are all fixed and are equipped with the stand, the top fixedly connected with diaphragm of two stands, the inside middle part of two stands is all fixed and is equipped with the pneumatic cylinder, the equal fixedly connected with dead lever in flexible end of two pneumatic cylinders, the bottom of the relative one side of two stands all seted up with two dead lever matched with spouts, the equal fixedly connected with connecting rod in middle part of two dead lever bottoms, the bottom fixedly connected with upper die utensil of the bottom fixedly connected with of two connecting rods, the one end fixedly connected with barrel that two dead levers are relative, the bottom of barrel is equipped with the toper shower nozzle, the bottom of toper shower nozzle and the runner fixed connection of upper die utensil, the middle part fixed be equipped with the lower mould with last mould matched with on base top, the bottom of diaphragm is equipped with the injection subassembly, the injection subassembly is including setting up the pneumatic cylinder at diaphragm top middle part, the flexible fixedly connected with fixed plate of pneumatic cylinder, and the fixed plate is located the bottom of diaphragm, the equal fixedly connected with spliced pole in four corners of fixed plate bottom, the bottom fixedly connected with injection piston of four spliced poles, the arc of injection piston, and the middle part of round hole matched with electric putter.

As a further description of the above technical solution:

the middle part of barrel fixedly connected with set casing, the inside fixed a plurality of annular electrothermal tube that is equipped with of set casing.

As a further description of the above technical solution:

and vibrating motors are fixedly arranged at the bottoms of the two sides of the machine barrel.

As a further description of the above technical solution:

and a mixing drum is fixedly arranged on one side of the top end of the transverse plate, and a material conveying pipe is fixedly connected to the top of one side of the mixing drum.

As a further description of the above technical solution:

the bottom fixedly connected with casing and the fixing bearing of churn, the fixed agitator motor that is equipped with in inside of casing, agitator motor's output fixedly connected with stirring screw rod, fixing bearing is installed in the top cooperation of stirring screw rod.

As a further description of the above technical solution:

the middle part fixedly connected with inlet pipe of churn bottom, the top fixed connection of the other end and barrel one side of inlet pipe, the top fixedly connected with motorised valve of inlet pipe, and the middle part of inlet pipe is the arc.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses in, can drive the stirring screw through agitator motor and rotate in the inside of churn to make more even that the feed mixes, improve the shaping quality, inside the feed can enter into the barrel through curved inlet pipe.

2. The utility model discloses in, establish to the toper through the bottom with the barrel, can make things convenient for the output of feed, a plurality of annular electrothermal tube can heat the barrel, prevents that the feed from at the barrel internal cooling and influencing the mobility, avoids appearing the condition of annotating absolutely, has guaranteed the shaping quality, and the excitation that two shock dynamo produced can make the inside gaseous come-up of barrel inner wall and feed to make more even of feed.

3. The utility model discloses in, make injection piston move down under the drive of pneumatic cylinder, because the bottom of injection piston is the arc of epirelief, the gas of feed passes through the round hole and discharges in the barrel, prevents to have the bubble to remain in the barrel to electric putter drives the stopper post and plugs up the round hole when the feed spills over, has reduced the possibility that the gas pocket appears, thereby carries out injection moulding.

Drawings

Fig. 1 is a schematic structural view of a powder injection molding apparatus for preventing air holes according to the present invention;

FIG. 2 is a schematic view of an injection module of the powder injection molding apparatus with air holes prevention according to the present invention;

fig. 3 is a schematic view of a stirring screw structure of a gas-tight powder injection molding apparatus according to the present invention;

fig. 4 is a schematic view of the bottom structure of the injection piston of the powder injection molding apparatus with air holes prevention according to the present invention.

Illustration of the drawings: 1. a base; 2. a column; 3. a lower die; 4. an injection assembly; 41. a pneumatic cylinder; 42. a fixing plate; 43. an electric push rod; 44. connecting columns; 45. a plug; 46. an injection piston; 5. an upper die; 6. a barrel; 7. vibrating a motor; 8. a stationary case; 9. a transverse plate; 10. a mixing drum; 11. a housing; 12. a stirring motor; 13. fixing a bearing; 14. a stirring screw; 15. fixing the rod; 16. a chute; 17. a connecting rod; 18. and (4) feeding a pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a powder injection molding device for preventing air holes comprises a base 1, wherein two sides of the top end of the base 1 are fixedly provided with stand columns 2, the top ends of the two stand columns 2 are fixedly connected with a transverse plate 9, the middle parts of the inner parts of the two stand columns 2 are fixedly provided with hydraulic cylinders, the telescopic ends of the two hydraulic cylinders are fixedly connected with fixing rods 15, the bottoms of the opposite sides of the two stand columns 2 are respectively provided with a chute 16 matched with the two fixing rods 15, the middle parts of the bottom ends of the two fixing rods 15 are respectively fixedly connected with a connecting rod 17, the bottom ends of the two connecting rods 17 are fixedly connected with an upper die 5, the opposite ends of the two fixing rods 15 are fixedly connected with a machine barrel 6, the bottom of the machine barrel 6 is provided with a conical spray nozzle, the bottom end of the conical spray nozzle is fixedly connected with a flow channel of the upper die 5, the middle part of the top end of the base 1 is fixedly provided with a lower die 3 matched with the upper die 5, the bottom end of the transverse plate 9 is provided with an injection assembly 4, the injection assembly 4 comprises a pneumatic cylinder 41 arranged in the middle of the top end of a transverse plate 9, a fixed plate 42 is fixedly connected with the telescopic end of the pneumatic cylinder 41, the fixed plate 42 is positioned at the bottom of the transverse plate 9, connecting columns 44 are fixedly connected with the four corners of the bottom end of the fixed plate 42, injection pistons 46 are fixedly connected with the bottom ends of the four connecting columns 44, the bottom ends of the injection pistons 46 are in an upwards convex arc shape, a round hole is formed in the middle of each injection piston 46, an electric push rod 43 is fixedly connected with the bottom end of the fixed plate 42, a plug 45 matched with the round hole is fixedly connected with the telescopic end of the electric push rod 43, a fixed shell 8 is fixedly connected with the middle of the machine barrel 6, a plurality of annular electric heating tubes are fixedly arranged inside the fixed shell 8, vibrating motors 7 are fixedly arranged at the bottoms of the two sides of the machine barrel 6, and the upper die 5 and the machine barrel 6 can be driven to move up and down through hydraulic cylinders arranged inside the two upright columns 2, the bottom of the machine barrel 6 is set to be conical, so that the feeding can be conveniently output, the annular electric heating tubes can heat the machine barrel 6, the feeding is prevented from being cooled in the machine barrel 6 to influence the fluidity, the phenomenon of broken injection is avoided, and the forming quality is ensured, the excitation generated by the two vibrating motors 7 can enable the inner wall of the machine barrel 6 and gas inside the feeding to float upwards, and the feeding is more uniform, the injection piston 46 moves downwards under the driving of the pneumatic cylinder 41, the bottom of the injection piston 46 is in an upwards-convex arc shape, the gas of the feeding in the machine barrel 6 is discharged through a round hole to prevent bubbles from remaining in the machine barrel 6, when the feeding overflows, the electric push rod 43 drives the plug 45 to plug the round hole to block the round hole, so that the possibility of air holes is reduced, so that the injection forming is performed, a stirring cylinder 10 is fixedly arranged on one side of the top of the transverse plate 9, a top of one side of the stirring cylinder 10 is fixedly connected with a shell 11 and a fixed bearing 13, a stirring motor 12 is fixedly arranged inside the shell 11 and a stirring screw 14 is connected with the top of the stirring cylinder 18, and the stirring motor is connected with the top of the feeding pipe 18, so that the feeding pipe 18 of the stirring cylinder can be uniformly, and the stirring motor can be connected with the stirring cylinder 18, and the stirring motor 18, and the stirring motor can improve the quality of the feeding pipe 18, and the stirring cylinder is uniformly.

The working principle is as follows: when the device is used, the two hydraulic cylinders are controlled by the switch panel to clamp the upper die 5 and the lower die 3, a feed composed of metal powder and an adhesive enters the stirring cylinder 10 from a conveying pipe, the stirring motor 12 is started to drive the stirring screw 14 to rotate, the stirring screw 14 rotates to drive the feed in the stirring cylinder 10 to be mixed, then the electric valve is opened to enable the feed to be input into the cylinder 6 through the feeding pipe 18, the annular electric heating pipes are started to heat the cylinder 6, the situation that the feed is cooled in the cylinder 6 to influence the flowability is avoided, the two vibrating motors 7 are controlled to work, the generated excitation can enable gas in the inner wall of the cylinder 6 and the feed to float upwards and enable the feed to be more uniform, then the pneumatic cylinder 41 is controlled to drive the fixing plate 42 and the injection piston 46 to move downwards, the gas is discharged through the round hole, bubbles are prevented from remaining in the cylinder 6 due to the fact that the bottom of the injection piston 46 is in an upwards-protruding arc shape, the electric push rod 43 is controlled to drive the plug 45 to plug the round hole when the feed overflows, and then the pneumatic cylinder 41 is controlled to drive the injection piston 46 to perform injection molding.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a powder injection moulding device who prevents gas pocket, includes base (1), a serial communication port, base (1) top both sides all are fixed and are equipped with stand (2), the top fixedly connected with diaphragm (9) of two stand (2), the inside middle part of two stand (2) all is fixed and is equipped with the pneumatic cylinder, the equal fixedly connected with dead lever (15) of the flexible end of two pneumatic cylinders, bottom one side relative with two dead lever (15) spout (16) have all been seted up to the bottom of two stand (2), the equal fixedly connected with connecting rod (17) of middle part of two dead lever (15) bottom, the bottom fixedly connected with upper mold (5) of two connecting rod (17), the one end fixedly connected with barrel (6) relative of two dead lever (15), the bottom of barrel (6) is equipped with the toper shower nozzle, the bottom of toper shower nozzle and the runner fixed connection of upper mold (5), the middle part fixed be equipped with lower mold (3) with upper mold (5) matched with of base (1) top, the bottom of diaphragm (9) is equipped with injection subassembly (4), injection subassembly (4) includes the pneumatic cylinder (41) top, the fixed plate (41) bottom fixed plate (42) of pneumatic cylinder (41) bottom fixed connection of pneumatic cylinder (42) is located fixed plate (42), the fixed plate (42) bottom (42) of four corner fixed plate (42) are located fixed plate (42), the bottom fixedly connected with injection piston (46) of four spliced poles (44), the bottom of injection piston (46) is the arc of epirelief to the round hole has been seted up at the middle part of injection piston (46), the bottom fixedly connected with electric putter (43) of fixed plate (42), the flexible end fixedly connected with and round hole matched with stopper post (45) of electric putter (43).

2. The powder injection molding apparatus for preventing air holes of claim 1, wherein a stationary casing (8) is fixedly connected to the middle of the cylinder (6), and a plurality of annular electric heating tubes are fixedly disposed inside the stationary casing (8).

3. The powder injection molding apparatus for preventing air holes of claim 1, wherein a vibration motor (7) is fixedly provided at the bottom of both sides of the cylinder (6).

4. The apparatus for injection molding of powder with air vent prevention as claimed in claim 1, wherein a mixing drum (10) is fixedly provided at one side of the top end of the horizontal plate (9), and a feed delivery pipe is fixedly connected to the top of one side of the mixing drum (10).

5. The powder injection molding device of claim 4, wherein the bottom end of the mixing drum (10) is fixedly connected with a casing (11) and a fixed bearing (13), the inside of the casing (11) is fixedly provided with a mixing motor (12), the output end of the mixing motor (12) is fixedly connected with a mixing screw (14), and the top of the mixing screw (14) is provided with the fixed bearing (13) in a matching way.

6. The powder injection molding apparatus for preventing air holes of claim 5, wherein the feeding pipe (18) is fixedly connected to the middle of the bottom end of the mixing drum (10), the other end of the feeding pipe (18) is fixedly connected to the top of one side of the machine barrel (6), the electric valve is fixedly connected to the top of the feeding pipe (18), and the middle of the feeding pipe (18) is arc-shaped.