Device and method for preparing feed for injection molding of high-wear-resistance metal powder

Abstract

The invention relates to the technical field of metal powder injection molding, in particular to a high-wear-resistance metal powder injection molding feed preparation device and method.The high-wear-resistance metal powder injection molding feed preparation device comprises an extruder, a containing device is arranged at the top end of the extruder, and the containing device is used for bearing metal powder and a binding agent to be mixed in the containing device; a stirring device is arranged in the accommodating device and is used for scattering and stirring a mixture in the accommodating device; through the arrangement of the stirring device, a stirring roller can turn over and stir metal powder and an adhesive, and primary mixing is achieved; the impeller further stirs the materials at the bottom of the mixing barrel to ensure uniform mixing. Meanwhile, the linkage assembly drives the scraping plate to rotate, attachments attached to the inner wall of the mixing barrel are scraped off, the crushing plate scatters the mixture, the mixing effect is further guaranteed, the mixing efficiency and quality are greatly improved through the all-directional and multi-layer mixing mode, and feeding and mixing are more sufficient and uniform.

Description

Technical Field

[0001] The present invention relates to the technical field of metal powder injection molding, and particularly relates to a feeding preparation device and method for high wear-resistant metal powder injection molding. Background Art

[0002] In the technical field of metal powder injection molding, high wear-resistant metal products, with their excellent properties, have extensive and crucial application requirements in many high-end industries such as aerospace, automotive manufacturing, medical devices, and precision electronics. And the feedstock, as the basic raw material for metal powder injection molding, the quality of its preparation plays a decisive role in the performance of the final molded product.

[0003] In the prior art, in the feedstock proportioning link, due to the lack of effective adjustment means, it is impossible to accurately control the proportion of each component according to different product performance requirements, resulting in large fluctuations in the feedstock composition. This makes the key properties such as wear resistance of the produced metal products uneven, seriously affecting the quality stability and consistency of the products. In terms of mixing, the existing stirring and mixing equipment often has a single function and can only perform preliminary stirring on the materials, making it difficult to achieve a full-range and deep-level mixing effect. On the one hand, it is impossible to fully stir the materials at the bottom of the mixing barrel, easily causing the situation of insufficient mixing of the bottom materials; on the other hand, for the materials attached to the inner wall of the mixing barrel, there is a lack of effective cleaning and treatment mechanisms, and these attachments affect the mixing uniformity.

[0004] With the continuous improvement of the market's requirements for the quality and performance of high wear-resistant metal powder injection molding products, as well as the strict requirements for production efficiency and cost control, there is an urgent need for a feeding preparation device that can achieve precise proportion adjustment and efficient mixing. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the technical solution adopted by the present invention to solve its technical problems is: a feeding preparation device for high wear-resistant metal powder injection molding, including: an extruder, at the top of which there is a containing device for carrying out mixing of metal powder and binder inside it, and inside the containing device there is a stirring device for dispersing and stirring the mixture in the containing device; a feeding device fixedly installed at the top of the containing device for quantitatively feeding metal powder into the containing device; the feeding device includes a hydraulic rod, at the top of which there is a fixed rod fixedly connected, symmetrically fixedly connected to the outer wall of the fixed rod are pull rods, symmetrically arranged outside the hydraulic rod are feeding cylinders, the inner wall of the feeding cylinder is slidably connected with a sliding disk, the outer wall of the sliding disk is rotatably connected with an adjusting screw, a circulation hole is opened in the wall of the feeding cylinder, and a circulation pipe is fixedly connected to the outer wall of the feeding cylinder.

[0006] Rotate the adjusting screw. Since the outer wall of the adjusting screw is threadedly connected to the inner wall of the pull rod, and the outer wall of the pull rod is slidably connected to the inner wall of the sliding disk, the rotation of the adjusting screw can change the position of the sliding disk in the feed cylinder, thereby adjusting the storage amounts of metal powder and binder in the feed cylinder and realizing ratio adjustment.

[0007] The present invention is further configured such that the outer wall of the pull rod is slidably connected to the inner wall of the sliding disk, the outer wall of the adjusting screw is threadedly connected to the inner wall of the pull rod, the flow holes correspond to the flow pipes, the bottom end of the inner wall of the feed cylinder is fixedly connected with a chassis, a discharge port is formed in the wall of the chassis, a sliding rod is fixedly connected to the outer wall of the chassis, a blocking disk is slidably connected to the outer wall of the sliding rod, and a blocking block is fixedly connected to the outer wall of the blocking disk. When the sliding disk moves downward, it pushes the metal powder and the binder downward. Therefore, under the push of the sliding disk and under the downward pressure, the blocking disk will be pushed to move downward against the elastic force of the pushing spring, so that the blocking block disengages from the discharge port, and the metal powder and the binder can enter the receiving device through the discharge port.

[0008] The present invention is further configured such that the outer wall of the blocking block is slidably connected to the inner wall of the discharge port, the bottom end of the sliding rod is fixedly connected with a pushing spring, and the top end of the pushing spring is fixedly connected with the bottom end of the blocking disk. When the hydraulic rod drives the fixed rod to move upward again, the sliding disk also moves upward, generating a suction force, and the blocking block blocks the discharge port again under the push of the pushing spring, so that the metal powder and the binder will not fall.

[0009] The present invention is further configured such that the receiving device includes a mixing barrel, a servo motor is fixedly connected to the outer wall of the top end of the mixing barrel, a protection barrel is fixedly connected to the inner wall of the top end of the mixing barrel, a heating wire is fixedly connected to the inner wall of the mixing barrel, a discharge pipe is fixedly connected to the bottom end of the mixing barrel, the outer wall of the mixing barrel is fixedly connected to the outer wall of the hydraulic rod, and the inner wall of the mixing barrel is fixedly connected to the inner wall of the feed cylinder. The mixture in the mixing barrel is preheated by the heating wire provided on the inner wall of the mixing barrel, and a valve is provided outside the discharge pipe. When it is necessary to convey to an extruder, the valve is opened, and with the rotation of the stirring rod, the conveying roller can convey the mixed material towards the discharge pipe, making it easier to convey the viscous mixture.

[0010] The present invention is further configured such that the stirring device comprises a stirring rod, a stirring roller is fixedly connected to the outer wall of the stirring rod, a conveying roller is fixedly connected to the bottom end of the stirring rod, an impeller is fixedly connected to the outer wall of the bottom end of the stirring rod, a mounting rod is symmetrically arranged on the outside of the stirring rod, a scraper is fixedly connected to the outer wall of the mounting rod, a crushing plate is fixedly connected to the outer wall of the scraper, a bottom plate is fixedly connected to the bottom end of the scraper, and a linkage assembly is arranged on the top of the stirring rod. When the servo motor is started, the stirring rod is driven to rotate, and the stirring roller on the outer wall of the stirring rod turns over and stirs the metal powder and the adhesive to achieve preliminary mixing, and the impeller on the outer wall of the bottom end of the stirring rod can further stir the materials at the bottom of the mixing barrel when rotating.

[0011] The present invention is further configured such that the outer wall of the stirring rod is rotatably connected to the inner wall of the mixing barrel, the top end of the stirring rod is fixedly connected to the output end of the servo motor, the outer wall of the scraper is slidably connected to the inner wall of the mixing barrel, and the outer wall of the conveying roller is slidably connected to the inner wall of the discharge pipe. The scraper on the mounting rod is slidably connected to the inner wall of the mixing barrel, so as to scrape off the attachments attached to the inner wall of the mixing barrel, and the crushing plate on the scraper breaks up the mixture during the rotation process, further ensuring the mixing effect.

[0012] The present invention is further configured such that the linkage assembly includes a linkage rod, the top outer wall of the linkage rod is rotatably connected with an upper bevel gear, the inner wall of the linkage rod is rotatably connected with a side bevel gear, the inner wall of the bottom inner wall of the linkage rod is rotatably connected with a rotating ring, and the outer wall of the rotating ring is fixedly connected with a lower bevel gear. When the stirring rod rotates, the upper bevel gear is driven to rotate, the upper bevel gear is engaged with the side bevel gear to rotate the side bevel gear, and the side bevel gear is engaged with the lower bevel gear to drive the rotating ring to rotate, and the rotating ring drives the mounting rod to rotate.

[0013] The present invention is further configured such that the inner walls of the linkage rod, the rotating ring and the lower bevel teeth are slidably connected to the outer wall of the stirring rod, the inner wall of the upper bevel teeth is fixedly connected to the outer wall of the stirring rod, the outer wall of the rotating ring is fixedly connected to the outer wall of the mounting rod, the outer wall of the linkage rod is fixedly connected to the inner wall of the protective tube, and the upper bevel teeth and the lower bevel teeth are both meshed with the side bevel teeth.

[0014] A method for preparing feed material for high wear-resistant metal powder injection molding, comprising the following steps:

[0015] Step 1: Connect the external storage tank containing metal powder and adhesive to the feeding device through the circulation pipe, change the distance of the sliding plate by rotating the adjusting screw to adjust the proportion, and transport the metal powder and adhesive into the containing device by starting the hydraulic rod;

[0016] Step 2: The servo motor drives the stirring device to rotate, and the metal powder and the adhesive are turned over, stirred and mixed;

[0017] Step 3: Through the connection of the linkage assembly, the scraper rotates in the opposite direction to scrape off the attachments attached to the inner wall of the mixing barrel, and the mixture is broken up by the crushing plate to ensure the mixing effect;

[0018] Step 4: After the mixing is completed, open the valve outside the discharge pipe to allow the mixture to enter the extruder below, and then be extruded and formed by the extruder, and finally cooled and crushed to complete the preparation of the feed.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. The present invention provides a feeding device, and rotating the adjusting screw can change the position of the sliding plate in the feeding barrel, thereby accurately adjusting the storage amount of metal powder and adhesive in the feeding barrel, and realizing accurate ratio adjustment. This precise ratio control can ensure the stability of the feeding ingredients, lay the foundation for producing metal powder injection molding products with consistent performance and high wear resistance, and effectively avoid product quality problems caused by inaccurate ratios.

[0021] 2. The present invention is provided with a stirring device, and the stirring roller can turn over and stir the metal powder and the adhesive to achieve preliminary mixing; the impeller further stirs the materials at the bottom of the mixing barrel to ensure uniform mixing. At the same time, the linkage assembly drives the scraper to rotate, scrapes off the attachments attached to the inner wall of the mixing barrel, and the crushing plate breaks up the mixture, further ensuring the mixing effect. This all-round and multi-level mixing method greatly improves the mixing efficiency and quality, and makes the feeding mixing more sufficient and uniform.

[0022] 3. The present invention can preheat the mixture in the mixing barrel by means of a heating wire arranged on the inner wall of the mixing barrel, thus providing good conditions for the subsequent injection molding process. Appropriate preheating can make the material have better fluidity and molding performance during injection molding, which helps to improve the precision and quality of the molded product. After the mixing is completed, the conveying roller on the stirring rod can smoothly convey the mixed viscous material to the discharge pipe, making it easier for the material to enter the extruder.

[0023] 4. The feeding device of the present invention realizes the cyclic operation of automatic feeding and preparing for the next feeding through the up and down movement of the hydraulic rod, and the entire feeding preparation process is automated to a certain extent. At the same time, the various links from feeding, mixing to transportation are closely coordinated to ensure the continuity of production, reduce manual intervention, improve the stability and reliability of production, and reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the structure of the accommodation device of the present invention;

[0026] Figure 3 is a schematic structural view of the stirring device of the present invention;

[0027] Figure 4 is the present invention Figure 3 an enlarged view of the structure at A;

[0028] Figure 5 is a schematic structural view of the feeding device of the present invention;

[0029] Figure 6 is a schematic view of the internal structure of the feeding cylinder of the present invention;

[0030] Figure 7 is a schematic structural view of the chassis of the present invention.

[0031] In the figure: 1, extruder; 2, accommodating device; 21, mixing barrel; 22, servo motor; 23, protection cylinder; 24, heating wire; 25, discharge pipe; 3, feeding device; 31, hydraulic rod; 32, fixed rod; 33, pull rod; 34, feeding cylinder; 35, adjusting screw; 36, sliding disk; 37, flow pipe; 38, flow hole; 39, chassis; 310, discharge port; 311, sliding rod; 312, blocking disk; 313, blocking block; 314, pushing spring; 4, stirring device; 41, stirring rod; 42, stirring roller; 43, conveying roller; 44, impeller; 45, mounting rod; 46, scraping plate; 47, crushing plate; 48, bottom plate; 49, linkage assembly; 491, linkage rod; 492, upper inclined tooth; 493, lower inclined tooth; 494, side inclined tooth; 495, rotating ring. Detailed Embodiment

[0032] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are given for purposes of illustration and description, and are not exhaustive or limit the present invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and design various embodiments with various modifications suitable for specific purposes.

[0033] Embodiment:

[0034] Please refer to Figure 1 - Figure 7, the present invention provides a technical solution: a feeding preparation device for high wear-resistant metal powder injection molding, comprising: an extruder 1, a receiving device 2 is arranged at the top of the extruder 1, and the receiving device 2 is used to carry metal powder and binder to mix inside it. A stirring device 4 is arranged inside the receiving device 2, and the stirring device 4 is used to disperse and stir the mixture inside the receiving device 2; a feeding device 3, the feeding device 3 is fixedly installed at the top of the receiving device 2, and the feeding device 3 is used to quantitatively input metal powder into the receiving device 2; the feeding device 3 includes a hydraulic rod 31, the top of the hydraulic rod 31 is fixedly connected with a fixed rod 32, the outer wall of the fixed rod 32 is symmetrically fixedly connected with a pull rod 33, the outside of the hydraulic rod 31 is symmetrically provided with a feeding cylinder 34, the inner wall of the feeding cylinder 34 is slidably connected with a sliding disk 36, the outer wall of the sliding disk 36 is rotatably connected with an adjusting screw 35, a circulation hole 38 is opened in the wall of the feeding cylinder 34, and a circulation pipe 37 is fixedly connected to the outer wall of the feeding cylinder 34.

[0035] The outer wall of the pull rod 33 is slidably connected with the inner wall of the sliding disk 36, the outer wall of the adjusting screw 35 is threadedly connected with the inner wall of the pull rod 33, the circulation hole 38 corresponds to the circulation pipe 37, the bottom end of the inner wall of the feeding cylinder 34 is fixedly connected with a chassis 39, a discharge port 310 is opened in the wall of the chassis 39, and a sliding rod 311 is fixedly connected to the outer wall of the chassis 39. The outer wall of the sliding rod 311 is slidably connected with a blocking disk 312, and a blocking block 313 is fixedly connected to the outer wall of the blocking disk 312.

[0036] The outer wall of the blocking block 313 is slidably connected with the inner wall of the discharge port 310, the bottom end of the sliding rod 311 is fixedly connected with a pushing spring 314, and the top end of the pushing spring 314 is fixedly connected with the bottom end of the blocking disk 312.

[0037] The receiving device 2 includes a mixing barrel 21, a servo motor 22 is fixedly connected to the outer wall of the top of the mixing barrel 21, a protection barrel 23 is fixedly connected to the inner wall of the top of the mixing barrel 21, a heating wire 24 is fixedly connected to the inner wall of the mixing barrel 21, a discharge pipe 25 is fixedly connected to the bottom end of the mixing barrel 21, the outer wall of the mixing barrel 21 is fixedly connected with the outer wall of the hydraulic rod 31, and the inner wall of the mixing barrel 21 is fixedly connected with the inner wall of the feeding cylinder 34.

[0038] The stirring device 4 includes a stirring rod 41, stirring rollers 42 are fixedly connected to the outer wall of the stirring rod 41, a conveying roller 43 is fixedly connected to the bottom end of the stirring rod 41, an impeller 44 is fixedly connected to the outer wall of the bottom end of the stirring rod 41, mounting rods 45 are symmetrically arranged outside the stirring rod 41, scraping plates 46 are fixedly connected to the outer wall of the mounting rods 45, crushing plates 47 are fixedly connected to the outer wall of the scraping plates 46, a bottom plate 48 is fixedly connected to the bottom end of the scraping plates 46, and a linkage assembly 49 is arranged at the top end of the stirring rod 41.

[0039] The outer wall of the stirring rod 41 is rotatably connected to the inner wall of the mixing barrel 21, the top of the stirring rod 41 is fixedly connected to the output end of the servo motor 22, the outer wall of the scraper 46 is slidably connected to the inner wall of the mixing barrel 21, and the outer wall of the conveying roller 43 is slidably connected to the inner wall of the discharge pipe 25.

[0040] The linkage assembly 49 includes a linkage rod 491, the top outer wall of the linkage rod 491 is rotatably connected to an upper bevel tooth 492, the inner wall of the linkage rod 491 is rotatably connected to a side bevel tooth 494, the bottom inner wall of the linkage rod 491 is rotatably connected to a rotating ring 495, and the outer wall of the rotating ring 495 is fixedly connected to a lower bevel tooth 493.

[0041] The inner walls of the linkage rod 491, the rotating ring 495 and the lower bevel teeth 493 are slidably connected to the outer wall of the stirring rod 41, the inner wall of the upper bevel teeth 492 is fixedly connected to the outer wall of the stirring rod 41, the outer wall of the rotating ring 495 is fixedly connected to the outer wall of the mounting rod 45, the outer wall of the linkage rod 491 is fixedly connected to the inner wall of the protective tube 23, and the upper bevel teeth 492 and the lower bevel teeth 493 are both meshed with the side bevel teeth 494.

[0042] A method for preparing feed material for high wear-resistant metal powder injection molding, comprising the following steps:

[0043] Step 1: Connect the external storage tank containing metal powder and adhesive to the feeding device 3 through the circulation pipe 37, change the distance of the sliding plate 36 by rotating the adjusting screw 35, thereby adjusting the proportion, and start the hydraulic rod 31 to transport the metal powder and adhesive into the containing device 2;

[0044] Step 2: The servo motor 22 drives the stirring device 4 to rotate, and the metal powder and the adhesive are turned over, stirred and mixed;

[0045] Step 3: Through the connection of the linkage assembly 49, the scraper 46 rotates in the opposite direction to scrape off the attachments attached to the inner wall of the mixing barrel 21, and the crushing plate 47 breaks up the mixture to ensure the mixing effect;

[0046] Step 4: After the mixing is completed, the valve outside the discharge pipe 25 is opened to allow the mixture to enter the extruder 1 below, and the mixture is extruded and formed by the extruder 1, and finally cooled and crushed to complete the preparation of the feed.

[0047] Working principle:

[0048] When in use, the external storage tanks filled with metal powder and adhesive are connected to the feeding device 3 through the circulation pipes 37 respectively. Since the circulation holes 38 are opened in the wall of the feeding barrel 34, and the circulation holes 38 correspond to the circulation pipes 37, the metal powder and adhesive can enter the barrel 34. The adjusting screw 35 is rotated. Since the outer wall of the adjusting screw 35 is threadedly connected to the inner wall of the pull rod 33, and the outer wall of the pull rod 33 is slidingly connected to the inner wall of the sliding disk 36, the rotation of the adjusting screw 35 can change the position of the sliding disk 36 in the feeding barrel 34, thereby adjusting the storage amount of metal powder and adhesive in the feeding barrel 34 to achieve ratio adjustment. The hydraulic rod 31 is started, and the hydraulic rod 31 drives the fixed rod 32, the pull rod 33 and the sliding disk 36 to move downward. When the sliding disk 36 moves downward, the metal powder and adhesive are pushed downward. Therefore, under the push of the sliding plate 36, under the downward pressure, the blocking plate 312 will be pushed to overcome the elastic force of the pushing spring 314 and move downward, so that the blocking block 313 is separated from the discharge port 310, and the metal powder and adhesive can enter the containing device 2 through the discharge port 310. When the hydraulic rod 31 drives the fixed rod 32 to move upward, the sliding plate 36 also moves upward to generate a suction force, and under the push of the pushing spring 314, the blocking block 313 blocks the discharge port 310 again, so that the metal powder and adhesive will not fall, and under the action of the suction force, the metal powder and adhesive enter the feeding barrel 34 again to prepare for the next feeding.

[0049] At this time, the output end of the servo motor 22 is fixedly connected to the top of the stirring rod 41. When the servo motor 22 is started, the stirring rod 41 is driven to rotate, and the stirring roller 42 on the outer wall of the stirring rod 41 turns over and stirs the metal powder and the adhesive to achieve preliminary mixing, and the heating wire 24 arranged on the inner wall of the mixing barrel 21 preheats the mixture in the mixing barrel 21. When the impeller 44 on the outer wall of the bottom end of the stirring rod 41 rotates, it can further stir the materials at the bottom of the mixing barrel 21 to ensure uniform mixing;

[0050] Then, through the linkage assembly 49 provided at the top of the stirring rod 41, when the stirring rod 41 rotates, the upper bevel teeth 492 are driven to rotate, and the upper bevel teeth 492 mesh with the side bevel teeth 494 to rotate the side bevel teeth 494, and the side bevel teeth 494 mesh with the lower bevel teeth 493 to drive the rotating ring 495 to rotate, and the rotating ring 495 drives the mounting rod 45 to rotate, and the scraper 46 on the mounting rod 45 is slidably connected with the inner wall of the mixing barrel 21, so as to scrape off the attachments attached to the inner wall of the mixing barrel 21, and the crushing plate 47 on the scraper 46 breaks up the mixture during the rotation process, so as to further ensure the mixing effect;

[0051] After mixing is completed, open the valve outside the discharge pipe 25. As the stirring rod 41 rotates, the conveying roller 43 can convey the mixed material towards the discharge pipe 25, making it easier to convey the viscous mixture. The mixed material enters the lower extruder 1 under the action of the conveying roller 43. The extruder 1 extrudes and shapes the material, and the shaped material is cooled and crushed, finally completing the preparation of the feed.

[0052] Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art and related fields without creative efforts shall fall within the scope of protection of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention shall be implemented by conventional means in the art without special instructions and limitations.

Claims

1. A feeding preparation device for high wear-resistant metal powder injection molding, characterized in that: include: An extruder (1), wherein a containing device (2) is disposed at the top of the extruder (1), wherein the containing device (2) is used to carry metal powder and a binder for mixing inside the containing device (2), and wherein a stirring device (4) is disposed inside the containing device (2), wherein the stirring device (4) is used to disperse and stir the mixture inside the containing device (2); A feeding device (3), the feeding device (3) being fixedly mounted on the top of the containing device (2), and the feeding device (3) being used to quantitatively feed metal powder into the containing device (2); The feeding device (3) comprises a hydraulic rod (31), the top end of the hydraulic rod (31) is fixedly connected to a fixed rod (32), the outer wall of the fixed rod (32) is symmetrically fixedly connected to a pull rod (33), a feeding barrel (34) is symmetrically arranged outside the hydraulic rod (31), the inner wall of the feeding barrel (34) is slidably connected to a sliding disk (36), the outer wall of the sliding disk (36) is rotatably connected to an adjusting screw (35), a flow hole (38) is opened in the wall of the feeding barrel (34), and the outer wall of the feeding barrel (34) is fixedly connected to a flow pipe (37).

2. A feeding material preparation device for high wear-resistant metal powder injection molding according to claim 1, characterized in that: The outer wall of the pull rod (33) is slidably connected to the inner wall of the sliding disk (36), the outer wall of the adjusting screw (35) is threadedly connected to the inner wall of the pull rod (33), the circulation hole (38) corresponds to the circulation tube (37), the bottom end of the inner wall of the feeding barrel (34) is fixedly connected to a chassis (39), a discharge port (310) is opened in the wall of the chassis (39), the outer wall of the chassis (39) is fixedly connected to a sliding rod (311), the outer wall of the sliding rod (311) is slidably connected to a blocking disk (312), and the outer wall of the blocking disk (312) is fixedly connected to a blocking block (313).

3. The feed material preparation device for high wear-resistant metal powder injection molding according to claim 2, characterized in that: The outer wall of the blocking block (313) is slidably connected to the inner wall of the discharge port (310), the bottom end of the sliding rod (311) is fixedly connected to a push spring (314), and the top end of the push spring (314) is fixedly connected to the bottom end of the blocking plate (312).

4. The feed material preparation device for high wear-resistant metal powder injection molding according to claim 1, characterized in that: The containing device (2) comprises a mixing barrel (21), the top outer wall of the mixing barrel (21) is fixedly connected to a servo motor (22), the top inner wall of the mixing barrel (21) is fixedly connected to a protective cylinder (23), the inner wall of the mixing barrel (21) is fixedly connected to a heating wire (24), the bottom of the mixing barrel (21) is fixedly connected to a discharge pipe (25), the outer wall of the mixing barrel (21) is fixedly connected to the outer wall of a hydraulic rod (31), and the inner wall of the mixing barrel (21) is fixedly connected to the inner wall of a feeding barrel (34).

5. The feed material preparation device for high wear-resistant metal powder injection molding according to claim 1, characterized in that: The stirring device (4) comprises a stirring rod (41), the outer wall of which is fixedly connected to a stirring roller (42), the bottom end of which is fixedly connected to a conveying roller (43), the outer wall of the bottom end of which is fixedly connected to an impeller (44), a mounting rod (45) is symmetrically arranged outside the stirring rod (41), the outer wall of which is fixedly connected to a scraper (46), the outer wall of which is fixedly connected to a crushing plate (47), the bottom end of which is fixedly connected to a bottom plate (48), and a linkage assembly (49) is arranged at the top end of the stirring rod (41).

6. A feeding material preparation device for high wear-resistant metal powder injection molding according to claim 5, characterized in that: The outer wall of the stirring rod (41) is rotatably connected to the inner wall of the mixing barrel (21), the top end of the stirring rod (41) is fixedly connected to the output end of the servo motor (22), the outer wall of the scraper (46) is slidably connected to the inner wall of the mixing barrel (21), and the outer wall of the conveying roller (43) is slidably connected to the inner wall of the discharge pipe (25).

7. The feed material preparation device for high wear-resistant metal powder injection molding according to claim 5, characterized in that: The linkage assembly (49) comprises a linkage rod (491), the top outer wall of the linkage rod (491) is rotatably connected to an upper bevel tooth (492), the inner wall of the linkage rod (491) is rotatably connected to a side bevel tooth (494), the bottom inner wall of the linkage rod (491) is rotatably connected to a rotating ring (495), and the outer wall of the rotating ring (495) is fixedly connected to a lower bevel tooth (493).

8. The feed material preparation device for high wear-resistant metal powder injection molding according to claim 7, characterized in that: The inner walls of the linkage rod (491), the rotating ring (495) and the lower bevel teeth (493) are slidably connected to the outer wall of the stirring rod (41); the inner wall of the upper bevel teeth (492) is fixedly connected to the outer wall of the stirring rod (41); the outer wall of the rotating ring (495) is fixedly connected to the outer wall of the mounting rod (45); the outer wall of the linkage rod (491) is fixedly connected to the inner wall of the protective tube (23); and the upper bevel teeth (492) and the lower bevel teeth (493) are both meshed with the side bevel teeth (494).

9. A method for preparing feed material for high wear-resistant metal powder injection molding, used for using the feed material preparation device for high wear-resistant metal powder injection molding in claims 1-8, characterized in that: The following steps are involved: Step 1: Connect the external storage tank containing metal powder and adhesive to the feeding device (3) through the circulation pipe (37), change the distance of the sliding plate (36) by rotating the adjusting screw (35), thereby adjusting the proportion, and start the hydraulic rod (31) to transport the metal powder and adhesive into the containing device (2); Step 2: The servo motor (22) drives the stirring device (4) to rotate, so as to turn over and stir the metal powder and the adhesive; Step 3: by connecting the linkage assembly (49), the scraper (46) rotates in the opposite direction to scrape off the attachments attached to the inner wall of the mixing barrel (21), and the crushing plate (47) breaks up the mixture to ensure the mixing effect; Step 4: After the mixing is completed, the valve outside the discharge pipe (25) is opened to allow the mixture to enter the extruder (1) below, and the mixture is extruded and formed by the extruder (1), and finally cooled and crushed to complete the preparation of the feed.

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