Metal powder injection machine

Abstract

The utility model relates to a metal powder injection machine which comprises a supporting frame, an injection mechanism and a feeding hopper, the injection mechanism is arranged on the supporting frame, the feeding hopper is communicated with the injection mechanism, the metal powder injection machine further comprises a stirring rod and a driving rod, a feeding port is formed in the top of the feeding hopper, and the stirring rod is connected with the feeding port. The stirring rod is arranged on the top face of the feeding hopper and rotationally connected with the feeding hopper, a plurality of stirring blades are evenly distributed on the outer wall of the position, located in the feeding hopper, of the stirring rod, and the driving rod and the stirring rod are arranged in a linkage mode. The utility model provides the metal powder injection machine which can stir and loosen metal particles in the feed hopper when the metal particles are blocked.

Description

Technical Field

[0001] The utility model relates to the technical field of jigs, in particular to a metal powder injection machine. Background Art

[0002] MIM (Metal Injection Molding) is short for Metal Injection Molding. Metal powder is mixed with a binder and granulated. The granulated material is then injected into a mold to form a MIM green body. Finally, degreasing and sintering are performed to produce the component. The MIM process is divided into: 1. Mixing and granulation, 2. Injection molding, 3. Part formation, 4. Degreasing, and 5. Sintering. These five steps complete the production of the component.

[0003] In injection molding, metal pellets are poured into the feed hopper on the injection machine. The metal pellets then fall into the injection tube due to gravity, and then melt and are injected into the mold. However, the metal pellets in the feed hopper may get stuck with each other during the process of falling due to gravity and cannot fall into the injection tube. Utility Model Content

[0004] In summary, in order to overcome the deficiencies of the prior art, the present invention provides a metal powder injection machine that can stir and loosen metal particles in a feed hopper when the metal particles are stuck.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a metal powder injection machine, comprising a support frame, an injection mechanism and a feed hopper, the injection mechanism being arranged on the support frame, the feed hopper being connected to the injection mechanism, and also comprising a stirring rod and a driving rod, a feeding port being provided at the top of the feed hopper, the stirring rod being rotatably connected to the top surface of the feed hopper, a plurality of evenly distributed stirring blades being provided on the outer wall of the stirring rod located inside the feed hopper, and the driving rod being linked to the stirring rod.

[0006] With this arrangement, when the metal particles in the feed hopper rub against each other and get stuck, the operator can grab the driving rod and drive the stirring rod to rotate on the feed hopper, so that the stirring blades in the feed hopper will also rotate, stirring the metal particles in the feed hopper, thereby achieving the effect of loosening the stuck metal particles. After the metal particles are loosened, they will continue to enter the injection mechanism through the bottom of the feed hopper due to gravity. The operation does not require additional power supply, the structure is simple, and the use of a driving rod for driving has a long lever arm and is easier to drive.

[0007] Furthermore, a square head is provided on the top of the stirring rod, and a square hole adapted to the square head is provided at one end of the driving rod.

[0008] With such an arrangement, the linkage is completed by adopting the form of a square hole sleeved on a square head, which has a simple structure, is easy to process and has stable driving.

[0009] Furthermore, the height of the square head is adapted to the height of the square hole, a threaded head is provided at the top end of the square head, and the driving rod is provided with a connecting nut adapted to the threaded head.

[0010] With this arrangement, after the square hole is put on the square head, the connecting nut can be screwed on, and then the connecting nut will fix the stirring rod on the driving rod and will not fall off.

[0011] Furthermore, a limiting cover is provided on the bottom surface of the feed hopper, and the limiting cover is provided with a limiting groove whose height is adapted to the thickness of the driving rod.

[0012] With this arrangement, the limit cover will limit the rotation angle of the drive rod and prevent it from being lifted vertically, making it more stable, while preventing the drive rod from swinging to the position of the feed port.

[0013] Furthermore, a gap is provided between the bottom surface of the driving rod and the top surface of the feed hopper.

[0014] This arrangement prevents the driving rod from rubbing against the top surface of the feed hopper when rotating, avoids increasing the pushing resistance, and avoids making noise.

[0015] Furthermore, a plurality of ball grooves are provided on one end of the driving rod facing the feed hopper, and rolling balls are provided in the ball grooves.

[0016] With this arrangement, a number of rolling balls in the ball grooves press against the top surface of the feed hopper, which can reduce friction while playing a supporting role, ensuring overall stability and smooth swinging.

[0017] Furthermore, a gripping handle is provided at the end of the driving rod facing away from the stirring rod and located outside the feed hopper.

[0018] With this arrangement, the grip handle is convenient for the operator to grip and more comfortable to rotate the driving rod.

[0019] Furthermore, a connecting column is provided on the top of the feed hopper at a position corresponding to the stirring rod, and a connecting groove is provided on the top surface of the feed hopper at a position corresponding to the connecting column, and a rolling bearing is provided in the connecting groove.

[0020] With this setting, the connecting column is thickened at the position where the stirring rod is connected, making the connection more stable. At the same time, after the rolling bearing is placed in the connecting groove at this position, friction can be reduced and the rotation is smoother. The interference fit between the rolling bearing and the stirring rod can also achieve a vertical fixing effect.

[0021] Furthermore, the stirring blade is spiral-shaped.

[0022] With this arrangement, the spiral blades can generate force in the vertical direction while stirring horizontally, which has a better loosening effect.

[0023] Furthermore, some of the stirring blades are conical in shape, being smaller at the bottom and larger at the top.

[0024] This arrangement reduces the width of the stirring blades in the conical part below the feed hopper, avoiding affecting the feeding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of an embodiment of the present utility model.

[0026] Figure 2 It is a partial exploded view of an embodiment of the present utility model.

[0027] Figure 3 for Figure 2 Magnified view of part A.

[0028] Figure 4 It is a cross-sectional view of an embodiment of the present utility model.

[0029] Figure 5 This is a schematic structural diagram of a driving rod according to an embodiment of the present utility model.

[0030] The meaning of the numbers in the figure: 1. Support frame, 2. Injection mechanism, 3. Feed hopper, 301. Feed port, 302. Limit cover, 3021. Limit groove, 303. Connecting column, 304. Connecting groove, 305. Rolling bearing, 4. Stirring rod, 401. Stirring blade, 402. Square head, 403. Threaded head, 404. Connecting nut, 5. Drive rod, 501. Square hole, 502. Ball groove, 503. Rolling ball, 504. Grab handle. DETAILED DESCRIPTION

[0031] This specific embodiment is merely an explanation of this embodiment and is not a limitation of this embodiment. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed, but as long as they are within the scope of the claims of this embodiment, they are protected by patent law.

[0032] Referring to the accompanying drawings, the present invention provides the following technical solutions: a metal powder injection machine, comprising a support frame 1, an injection mechanism 2 and a feed hopper 3, wherein the injection mechanism 2 is arranged on the support frame 1, and the feed hopper 3 is connected to the injection mechanism 2, and further comprises a stirring rod 4 and a driving rod 5, a feeding port 301 is provided on the top of the feed hopper 3, and the stirring rod 4 is rotatably connected to the top surface of the feed hopper 3, and a plurality of evenly distributed stirring blades 401 are provided on the outer wall of the stirring rod 4 located inside the feed hopper 3, and the driving rod 5 is linked to the stirring rod 4.

[0033] With such arrangement, when the metal particles in the feed hopper 3 rub against each other and get stuck, the operator can grab the driving rod 5 to drive the stirring rod 4 to rotate on the feed hopper 3, so that the stirring blades 401 in the feed hopper 3 will also rotate, stirring the metal particles in the feed hopper 3, thereby achieving the effect of loosening the stuck metal particles. After the metal particles are loosened, they will continue to enter the injection mechanism 2 through the bottom of the feed hopper 3 due to gravity. The operation does not require additional power supply, the structure is simple, and the driving rod 5 is used for driving, the force arm is long, and the driving is easier.

[0034] Preferably, in this embodiment, a square head 402 is provided on the top of the stirring rod 4 , and a square hole 501 adapted to the square head 402 is provided at one end of the driving rod 5 .

[0035] In this arrangement, the linkage is completed by sleeve-mounting the square hole 501 on the square head 402, which has a simple structure, is easy to process, and has stable driving.

[0036] Preferably, in this embodiment, the height of the square head 402 matches the height of the square hole 501 , a threaded head 403 is provided at the top of the square head 402 , and the driving rod 5 is provided with a connecting nut 404 matched with the threaded head 403 .

[0037] With this arrangement, after the square hole 501 is sleeved on the square head 402 , the connecting nut 404 can be screwed on, and then the connecting nut 404 will fix the stirring rod 4 on the driving rod 5 and will not fall off.

[0038] Preferably, in this embodiment, a limiting cover 302 is provided on the bottom surface of the feed hopper 3 , and the limiting cover 302 is provided with a limiting groove 3021 whose height is adapted to the thickness of the driving rod 5 .

[0039] With such arrangement, the limiting cover 302 will limit the rotation angle of the driving rod 5 and prevent it from being lifted vertically, making it more stable, while preventing the driving rod 5 from swinging to the position of the feed port 301.

[0040] Preferably, in this embodiment, a gap is provided between the bottom surface of the driving rod 5 and the top surface of the feed hopper 3 .

[0041] This arrangement prevents the driving rod 5 from rubbing against the top surface of the feed hopper 3 when rotating, avoids increasing the pushing resistance, and avoids making noise.

[0042] Preferably, in this embodiment, a plurality of ball grooves 502 are provided at one end of the driving rod 5 facing the feed hopper 3 , and rolling balls 503 are provided in the ball grooves 502 .

[0043] With such arrangement, a plurality of rolling balls 503 in the ball groove 502 press against the top surface of the feed hopper 3 to reduce friction while playing a supporting role, and the whole is stable and swings smoothly.

[0044] Preferably, in this embodiment, a gripping handle 504 is provided at the end of the driving rod 5 facing away from the stirring rod 4 and located outside the feed hopper 3 .

[0045] With this arrangement, the gripping handle 504 is convenient for the operator to grip, and the operator feels more comfortable when rotating the driving rod 5 .

[0046] Preferably, in this embodiment, a connecting column 303 is provided at the top of the feed hopper 3 corresponding to the position of the stirring rod 4 , and a connecting groove 304 is provided at the top surface of the feed hopper 3 corresponding to the position of the connecting column 303 , and a rolling bearing 305 is provided in the connecting groove 304 .

[0047] With this arrangement, the connecting column 303 is thickened at the position where the stirring rod 4 is connected, making the connection more stable. At the same time, the connecting groove 304 at this position can reduce friction after the rolling bearing 305 is placed, making the rotation smoother. The interference fit between the rolling bearing 305 and the stirring rod 4 can also achieve a vertical fixing effect.

[0048] Preferably, in this embodiment, the stirring blade 401 is spiral-shaped.

[0049] With this arrangement, the spiral blades can generate force in the vertical direction while stirring horizontally, which has a better loosening effect.

[0050] Preferably, in this embodiment, some of the stirring blades 401 are conical in shape with a smaller bottom and a larger top.

[0051] This arrangement reduces the width of the stirring blade 401 in the conical portion below the feed hopper 3, thus avoiding affecting the feeding process.

[0052] Although the present invention has been described in detail with reference to the aforementioned embodiments, the scope of protection of the present invention is not limited thereto. Any equivalent replacement or change made by any technician familiar with the technical field within the technical scope disclosed by the present invention according to the technical solution and the utility model concept of the present invention should be covered by the scope of protection of the present invention.

Claims

1. A metal powder injection machine, comprising a support frame, an injection mechanism, and a feed hopper, wherein the injection mechanism is disposed on the support frame, and the feed hopper is connected to the injection mechanism, characterized in that: It also includes a stirring rod and a driving rod. A feeding port is provided at the top of the feed hopper. The stirring rod is rotatably connected to the top surface of the feed hopper. The outer wall of the stirring rod located inside the feed hopper is provided with a plurality of evenly distributed stirring blades. The driving rod is linked to the stirring rod.

2. The metal powder injection molding machine according to claim 1, characterized in that: A square head is provided on the top of the stirring rod, and a square hole adapted to the square head is provided at one end of the driving rod.

3. The metal powder injection molding machine according to claim 2, characterized in that: The height of the square head is matched with the height of the square hole. The top of the square head is provided with a threaded head. The driving rod is provided with a connecting nut matched with the threaded head.

4. The metal powder injection molding machine according to claim 1, characterized in that: The bottom surface of the feed hopper is provided with a limiting cover, and the limiting cover is provided with a limiting groove with a height adapted to the thickness of the driving rod.

5. The metal powder injection molding machine according to claim 4, characterized in that: A gap is provided between the bottom surface of the driving rod and the top surface of the feeding hopper.

6. The metal powder injection molding machine according to claim 5, characterized in that: A plurality of ball grooves are provided on one end of the driving rod facing the feed hopper, and rolling balls are provided in the ball grooves.

7. The metal powder injection molding machine according to claim 1, characterized in that: A gripping handle is provided at a position outside the feed hopper at one end of the driving rod facing away from the stirring rod.

8. The metal powder injection molding machine according to claim 1, characterized in that: A connecting column is provided on the top of the feed hopper at a position corresponding to the stirring rod, and a connecting groove is provided on the top surface of the feed hopper at a position corresponding to the connecting column, and a rolling bearing is provided in the connecting groove.

9. The metal powder injection molding machine according to claim 1, characterized in that: The stirring blade is spiral-shaped.

10. The metal powder injection molding machine according to claim 1, characterized in that: Some of the stirring blades are conical in shape with a smaller bottom and a larger top.

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