Metal powder injection molding equipment

Abstract

The utility model discloses metal powder injection molding equipment, which relates to the technical field of injection molding equipment and comprises a support, a mixing cylinder and an injection cylinder are sequentially arranged on the support, and a conveying pipe is arranged between the mixing cylinder and the injection cylinder. A feeding port is formed in one end of the mixing barrel, a mixing assembly used for stirring metal powder is arranged in the mixing barrel, a vibration motor is arranged at the bottom of the mixing barrel, and a vibration isolation device is arranged between the mixing barrel and the support. The syringe is fixedly connected with the support, and a pushing assembly is arranged in the syringe; the production efficiency and the finished product quality are improved, the stability of the equipment is enhanced, the service life of the equipment is prolonged, and the overall production benefit and competitiveness are remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding equipment, and more specifically to a metal powder injection molding equipment. Background Art

[0002] Metal Powder Injection Molding (MIM) is an advanced manufacturing technology for producing complex metal parts. It combines the advantages of plastic injection molding and powder metallurgy technology and is widely used in the fields of automobiles, aerospace, medical devices, electronic products, etc.

[0003] Metal powder injection molding technology mixes metal powder with a binder to make easy-to-inject particles (i.e., a mixture), which is then injected into a mold to form the desired parts. After the demolding and sintering process, the binder is removed and the metal powder is combined into a dense metal part at high temperature. It is capable of producing metal parts with complex shapes and precise dimensions, with high production efficiency and good material properties. It is suitable for mass production of small to medium-sized metal parts with complex shapes.

[0004] Before metal powder injection molding, there is a step of mixing metal powder with a binder. However, the uniform mixing of metal powder and binder is a key issue. The ordinary mixing method has a relatively simple structure and the effect cannot achieve the ideal state. If the mixing is not uniform, it will affect the quality of the final product. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to solve the problems raised in the above background technology.

[0006] In order to solve the above problems, the utility model adopts the following technical solutions:

[0007] A metal powder injection molding device, comprising:

[0008] A bracket, on which a mixing cylinder and an injection cylinder are arranged in sequence, and a material delivery pipe is arranged between the mixing cylinder and the injection cylinder;

[0009] A feed port is provided at one end of the mixing drum, a mixing assembly for stirring metal powder is provided inside the mixing drum, a vibration motor is provided at the bottom of the mixing drum, and a seismic isolation device is provided between the mixing drum and the bracket;

[0010] The injection cylinder is fixedly connected to the bracket, and a pushing component is arranged inside the injection cylinder.

[0011] As a preferred solution of the utility model, the mixing assembly includes stirring rods symmetrically rotatably arranged inside the mixing barrel, and the two stirring rods are located outside the mixing barrel and are respectively provided with a first gear and a second gear, the first gear and the second gear are meshingly connected, and the mixing barrel is fixedly provided with a first motor on one side of the first gear, and the output end of the first motor is fixedly connected to the first gear.

[0012] As a preferred solution of the present invention, the diameters of the first gear and the second gear are different, and the first gear and the second gear are meshed with each other.

[0013] As a preferred solution of the utility model, the bracket is symmetrically provided with slide rails, the seismic isolation device includes a slider slidably arranged inside the slide rail, and first springs are symmetrically arranged on both sides of the slider, and the two ends of the first spring are respectively fixedly connected to the slider and the bracket;

[0014] A connecting rod is fixedly provided on one side of the mixing cylinder corresponding to the slider, the connecting rod passes through the middle of the slider and is slidably connected to the slider, a second spring is sleeved on the connecting rod, and both ends of the second spring are fixedly connected to the connecting rod and the slider respectively.

[0015] As a preferred solution of the utility model, the half of the material conveying pipe close to the mixing barrel is composed of a corrugated pipe with a certain deformation ability.

[0016] As a preferred solution of the utility model, the pushing assembly includes a rotating rod rotatably arranged in the injection barrel, the rotating rod is spirally sleeved with threaded blades, a second motor is fixedly arranged on the outside of the injection barrel, and the output end of the second motor is fixedly connected to the rotating rod.

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] 1. Uniform and efficient mixing effect: The symmetrically arranged stirring rods can provide uniform shear force and mixing effect, ensure the uniform distribution of metal powder and binder, and prevent material agglomeration and stratification; the gear transmission ensures that the stirring rods work synchronously, and the various shear forces and stirring effects improve the mixing efficiency and uniformity.

[0019] 2. Improved mixing quality: The high-frequency vibration destroys the agglomeration of materials, further ensuring the uniform mixing of metal powder and binder and enhancing the mixing quality.

[0020] 3. Reduce the impact of vibration on equipment: The slider, spring and damper design reduces the transmission of vibration to the bracket and other components, protects the equipment and improves its stability, reduces maintenance requirements and extends the service life of the equipment.

[0021] 4. Flexible and stable material transportation: The corrugated tube has good deformation ability and flexibility, which can absorb the relative displacement between the mixing cylinder and the injection cylinder, prevent material blockage and ensure continuous transportation.

[0022] 5. Accurate and efficient pushing mechanism: The threaded blades and the second motor design ensure the uniform pushing of materials, accurately control the pushing speed and direction, and improve the precision and quality of injection molding.

[0023] Through these innovative designs and advantages, metal powder injection molding equipment not only improves production efficiency and finished product quality, but also enhances the stability and service life of the equipment, significantly improving the overall production efficiency and competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0025] Figure 2 This is an enlarged structural diagram of the mixing cylinder of the utility model;

[0026] Figure 3 This is a schematic diagram of the internal structure of the mixing cylinder of the utility model;

[0027] Figure 4 This is a schematic diagram of the internal structure of the syringe barrel of the utility model.

[0028] Description of the numbers in the figure:

[0029] 1. Bracket; 2. Mixing barrel; 21. Feed port; 3. Injection barrel; 4. Feed pipe; 5. Mixing assembly; 51. Stirring rod; 52. First gear; 53. Second gear; 54. First motor; 6. Vibration motor; 7. Isolation device; 71. Slide rail; 72. Sliding block; 73. First spring; 74. Connecting rod; 75. Second spring; 8. Pushing assembly; 81. Rotating rod; 82. Threaded blade; 83. Second motor. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Example

[0032] like Figure 1-4 As shown, a metal powder injection molding device comprises:

[0033] A support 1, on which a mixing cylinder 2 and an injection cylinder 3 are arranged in sequence, and a material delivery pipe 4 is arranged between the mixing cylinder 2 and the injection cylinder 3;

[0034] A feed port 21 is provided at one end of the mixing drum 2, a mixing assembly 5 for stirring metal powder is provided inside the mixing drum 2, a vibration motor 6 is provided at the bottom of the mixing drum 2, and a seismic isolation device 7 is provided between the mixing drum 2 and the bracket 1;

[0035] The syringe 3 is fixedly connected to the bracket 1 , and a pushing assembly 8 is arranged inside the syringe 3 .

[0036] In a further embodiment, the bracket 1 supports the various components of the entire equipment, provides a stable operating platform, ensures the stability and reliability of the equipment, and avoids unstable operation of the equipment due to vibration or other external factors. The mixing barrel 2 is used to mix metal powder and binder, and the mixing component 5 is used to ensure the mixing uniformity. The injection barrel 3 injects the mixed material into the mold through the pushing component 8 to achieve a precise injection molding process and ensure the dimensional accuracy and surface quality of the product; the feed pipe 4 connects the mixing barrel 2 and the injection barrel 3, and is used to transport the mixed material to the injection barrel 3 to ensure the continuity and uniformity of the material during the transportation process and avoid material separation and blockage; the vibration motor 6 provides high-frequency vibration for the mixing barrel 2 to enhance the mixing effect, destroys the agglomeration of the material through high-frequency vibration, makes the metal powder and binder more evenly distributed, and improves the mixing quality; the seismic isolation device 7 isolates the vibration between the mixing barrel 2 and the bracket 1 to reduce the impact of vibration on other components; the pushing component 8 pushes the mixed material from the injection barrel 3 into the mold for injection molding, and ensures that the material is injected into the mold evenly and stably by accurately controlling the pushing speed and pressure to achieve high-quality injection molding.

[0037] Specifically, the mixing assembly 5 includes stirring rods 51 symmetrically rotatably arranged inside the mixing barrel 2, and two stirring rods 51 are respectively provided with a first gear 52 and a second gear 53 outside the mixing barrel 2, and the first gear 52 and the second gear 53 are meshingly connected. The mixing barrel 2 is fixedly provided with a first motor 54 on one side of the first gear 52, and the output end of the first motor 54 is fixedly connected to the first gear 52.

[0038] In a further embodiment, the symmetrically arranged stirring rods 51 interact to generate a more uniform shear force, thereby ensuring uniform mixing of the metal powder and the binder and preventing agglomeration and stratification. The first gear 52 and the second gear 53 transmit the power of the first motor 54 to the two stirring rods 51, causing them to rotate synchronously in opposite directions, further improving the mixing uniformity.

[0039] Specifically, the diameters of the first gear 52 and the second gear 53 are different, and the first gear 52 and the second gear 53 are meshed with each other.

[0040] In a further embodiment, different diameters will cause the rotational speeds of the first gear 52 and the second gear 53 to be different. Due to the different gear diameters, the stirring rod 51 operates at different rotational speeds. This design provides a variety of shear forces and stirring effects, thereby improving mixing uniformity and efficiency.

[0041] Specifically, the bracket 1 is symmetrically provided with a slide rail 71, and the seismic isolation device 7 includes a slider 72 slidably arranged inside the slide rail 71, and first springs 73 are symmetrically arranged on both sides of the slider 72, and both ends of the first spring 73 are fixedly connected to the slider 72 and the bracket 1 respectively;

[0042] A connecting rod 74 is fixedly provided on one side of the mixing cylinder 2 corresponding to the slider 72. The connecting rod 74 passes through the middle of the slider 72 and is slidably connected to the slider 72. A second spring 75 is sleeved on the connecting rod 74. The two ends of the second spring 75 are fixedly connected to the connecting rod 74 and the slider 72 respectively.

[0043] In a further embodiment, the slide rail 71 provides a sliding track for the slider 72, and the slider 72 absorbs and buffers vibration by sliding to improve the stability of the equipment. The first spring 73 provides additional vibration buffering to reduce the vibration transmission of the equipment during operation, wherein a damper can be arranged in the middle of the first spring 73 to improve the buffering effect; the connecting rod 74 connects the mixing cylinder 2 and the slider 72 to ensure the stability of the mixing cylinder 2. Through the sliding connection of the connecting rod 74, the mixing cylinder 2 is allowed to have a certain buffering displacement when it is vibrated, thereby enhancing the seismic isolation effect. The second spring 75 ensures that the mixing cylinder 2 remains stable during the vibration process to avoid severe vibration affecting the mixing effect.

[0044] Specifically, the half of the material delivery pipe 4 close to the mixing cylinder 2 is composed of a corrugated pipe with a certain deformation ability.

[0045] In further embodiments, the deformability and flexibility of the bellows portion helps to buffer vibrations and displacements between devices, ensure continuous and uniform material delivery, and prevent material blockage and separation.

[0046] Specifically, the pushing assembly 8 includes a rotating rod 81 rotatably disposed in the injection barrel 3 , a threaded blade 82 is spirally sleeved on the rotating rod 81 , a second motor 83 is fixedly disposed outside the injection barrel 3 , and an output end of the second motor 83 is fixedly connected to the rotating rod 81 .

[0047] In a further embodiment, the threaded blade 82 is driven to rotate by the rotating rod 81, and the threaded blade 82 pushes the material forward through the spiral structure, thereby improving the pushing efficiency, ensuring that the material is evenly distributed in the injection barrel 3, and preventing blockage. The second motor 83 provides a power source and realizes material pushing by driving the rotating rod 81.

[0048] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A metal powder injection molding device, characterized in that: include: A support (1), wherein a mixing cylinder (2) and an injection cylinder (3) are sequentially arranged on the support (1), and a material delivery pipe (4) is arranged between the mixing cylinder (2) and the injection cylinder (3); A feed port (21) is provided at one end of the mixing barrel (2), a mixing assembly (5) for stirring metal powder is provided inside the mixing barrel (2), a vibration motor (6) is provided at the bottom of the mixing barrel (2), and a seismic isolation device (7) is provided between the mixing barrel (2) and the bracket (1); The injection cylinder (3) is fixedly connected to the bracket (1), and a pushing assembly (8) is arranged inside the injection cylinder (3).

2. A metal powder injection molding device according to claim 1, characterized in that: The mixing assembly (5) comprises stirring rods (51) symmetrically arranged inside the mixing barrel (2) for rotation, two stirring rods (51) located outside the mixing barrel (2) are respectively provided with a first gear (52) and a second gear (53), the first gear (52) and the second gear (53) are meshingly connected, and a first motor (54) is fixedly arranged on one side of the first gear (52) of the mixing barrel (2), and an output end of the first motor (54) is fixedly connected to the first gear (52).

3. A metal powder injection molding device according to claim 2, characterized in that: The diameters of the first gear (52) and the second gear (53) are different, and the first gear (52) and the second gear (53) are meshed with each other.

4. The metal powder injection molding equipment according to claim 1, characterized in that: The bracket (1) is symmetrically provided with a slide rail (71), the seismic isolation device (7) comprises a slider (72) slidably arranged inside the slide rail (71), first springs (73) are symmetrically arranged on both sides of the slider (72), and two ends of the first spring (73) are respectively fixedly connected to the slider (72) and the bracket (1); A connecting rod (74) is fixedly provided on one side of the mixing cylinder (2) corresponding to the slider (72); the connecting rod (74) passes through the middle of the slider (72) and is slidably connected to the slider (72); a second spring (75) is sleeved on the connecting rod (74); two ends of the second spring (75) are fixedly connected to the connecting rod (74) and the slider (72) respectively.

5. The metal powder injection molding equipment according to claim 1, characterized in that: The half of the material delivery pipe (4) close to the mixing cylinder (2) is composed of a corrugated pipe with a certain deformation ability.

6. The metal powder injection molding equipment according to claim 1, characterized in that: The pushing assembly (8) comprises a rotating rod (81) rotatably arranged in the injection barrel (3), a threaded blade (82) being spirally sleeved on the rotating rod (81), a second motor (83) being fixedly arranged outside the injection barrel (3), and an output end of the second motor (83) being fixedly connected to the rotating rod (81).

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