Powder recovery processing system applied to metal powder injection molding

Abstract

The invention discloses a powder recovery processing system applied to metal powder injection molding, and belongs to the technical field of metal powder recovery. The system comprises a barrel, and a supporting assembly is arranged in the barrel; the rotating pieces are arranged in the cylinder body and rotationally arranged on the supporting assembly; the first collecting parts are used for collecting metal powder and are fixed on the rotating piece; the second collecting part is arranged in the barrel in a sliding buckle mode and is used in cooperation with the first collecting part. The metal powder collecting device has the advantages that the rotating part is driven by the driving assembly to do circular motion around the supporting assembly, the first collecting part rotates along with the rotating part, and metal powder collected in the barrel is transferred into the second collecting part in the rotating process. And therefore, the degreased metal powder is collected and recycled. According to the design, frequent salvage or first liquid discharge and then collection are not needed, and the recovery efficiency of the metal powder is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of metal powder recovery, and in particular to a powder recovery and processing system applied to metal powder injection molding. Background Art

[0002] In the Metal Injection Molding (MIM) process, the gate system (commonly known as sprue) of the metal blank after injection molding must be trimmed before it can proceed to subsequent processes. This sprue is primarily composed of metal powder and a small amount of residual binder. To effectively utilize this resource, it must be recycled. A typical recycling process involves first separating and removing most of the residual binder through physical means such as crushing and screening, thereby purifying the metal powder. The purified metal powder can then be remixed into new feedstock at a specific ratio.

[0003] However, the recycling process faces a significant challenge: the surface of the nozzle material often contains a binder. This binder is crucial during the injection molding process, ensuring the fluidity of the feedstock and the strength of the green body. However, if the binder is not completely removed during the recycling process, its residue will significantly affect the processing properties of the recycled feedstock (such as rheological properties and uniformity). Therefore, specialized degreasing of the nozzle material to completely remove the surface binder is a key step in ensuring the quality of the recycled powder.

[0004] The traditional degreasing method involves immersing the nozzle material in a tank filled with a degreaser and then transferring it after it has been fully degreased. However, this method has significant drawbacks: if the entire nozzle material frame is immersed in the tank, the material blocks tend to stack on top of each other, hindering the effective penetration and contact of the degreaser, resulting in incomplete degreasing. If the nozzle material is directly poured into the tank, a large amount of manual labor is required to salvage it, resulting in low efficiency and high labor intensity. Summary of the Invention

[0005] In view of the above-mentioned technical deficiencies, the purpose of the present invention is to provide a powder recovery and processing system for metal powder injection molding, so as to solve the problem of low efficiency in salvaging metal blanks after degreasing in the prior art.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: The present invention provides a powder recovery and processing system for metal powder injection molding, comprising: a cylinder, wherein a support assembly is provided in the cylinder; a plurality of rotating parts arranged in the cylinder, wherein the rotating parts are rotatably arranged on the support assembly; a plurality of first collecting parts for collecting metal powder, wherein the first collecting parts are fixed on the rotating parts; a second collecting part with a slider arranged in the cylinder, wherein the second collecting part is used in conjunction with the first collecting part; wherein the rotating part is driven by the driving assembly to perform a circular motion around the support assembly, and the first collecting part rotates with the rotating part, and transfers the metal powder collected in the cylinder to the second collecting part during rotation.

[0007] Optionally, it also includes: a degreaser storage device, the degreaser storage device has an output port with a water pump, the output port is connected to the feed pipe, and the feed pipe is fixed on the cylinder; a sprue material conveying device, the sprue material conveying device has a feed port, the feed port is connected to the material channel, and the material channel is fixed on the cylinder; a circulation pump, the circulation pump is connected to the cylinder via a circulation pipe.

[0008] Optionally, the support assembly includes a first support part fixed in the cylinder, a second support part is fixed on the first support part, a plurality of third support parts are fixed on the second support part, the rotating part is rotatably arranged on the third support part, and a rotating ring is rotatably arranged in the second support part for use with the rotating part.

[0009] Optionally, a first opening and a second opening are formed on the second supporting portion, a third opening is formed on the third supporting portion, and the first opening and the third opening are communicated.

[0010] Optionally, a plurality of latches and a plurality of cylindrical pins are fixed on the rotating ring, the latches are located in the second opening, and the cylindrical pins are used in conjunction with the first opening and the third opening.

[0011] Optionally, the rotating member is arranged in a ring shape, and a plurality of helical grooves are opened in the inner ring diameter of the rotating member. These helical grooves are engaged with the cylindrical pins. The rotating ring is driven by a driving assembly. When the rotating ring rotates, the rotating member performs a circular motion around the third support part.

[0012] Optionally, the first collecting part is fixed to the rotating member via a connecting rod, a cover plate is rotatably connected to the first collecting part via a torsion spring, and a sliding groove is provided on a side of the first collecting part close to the second collecting part.

[0013] Optionally, a plurality of card slots are fixed in the cylinder, a card plate used in conjunction with the slide slots is fixed on the second collecting part, and the second collecting part is also clamped in the card slots through a card plate slide buckle.

[0014] Optionally, the drive assembly includes a gear meshing with the latching teeth, a rotating shaft is fixed on the gear, a motor is fixed on the cylinder, a transmission wheel is fixed on the end of the rotating shaft away from the gear and the output shaft of the motor, and the two transmission wheels are connected by a transmission belt.

[0015] Optionally, the gear is rotatably set on the second fixing part, the second fixing part is fixed on the first supporting part, the rotating shaft is rotatably set on the third fixing part, the third fixing part is fixed on the cylinder, the motor is rotatably set on the first fixing part, and the first fixing part is also fixed on the cylinder.

[0016] The beneficial effects of the present invention are: In this invention, a drive assembly drives a rotating member in circular motion around a support assembly, driving a first collection unit fixed to the rotating member to dynamically collect degreased metal powder nozzle material within the cylinder. As the first collection unit rotates, it automatically transfers the powder to a second collection unit located within a slider. This design completely eliminates the need for manual salvaging and pre-emptive degreasing agents for powder collection, achieving continuous degreasing and recovery operations, significantly improving metal powder nozzle material recovery efficiency and reducing labor costs.

[0017] At the same time, the present invention uses the dynamic collection mechanism of the first collection part during rotation to keep the metal powder sprue material in a state of continuous agitation and dispersion in the degreasing agent. This motion effectively prevents static accumulation of powder, ensures that the degreasing agent can fully contact the binder attached to the sprue material surface, and significantly improves the uniformity and thoroughness of degreasing, thereby ensuring the purity of the recovered metal powder sprue material and the process performance of the recycled feed material.

[0018] Furthermore, the present invention utilizes a motor to drive the rotating ring through the meshing of a transmission belt, gears, and latches. This, in turn, is achieved by meshing a cylindrical pin with the helical teeth on the rotating member, driving the rotating member, to which the first collecting unit is attached, to operate stably around the third support. This allows the first collecting unit to dynamically collect degreased metal powder while in motion and automatically transfer it to the second collecting unit, replacing inefficient manual operations.

[0019] To sum up, the present invention realizes the continuous circular motion of the first collecting part through the linkage drive mechanism, which not only completely eliminates the manual salvage link in the traditional process, but also realizes the full process automation of degreasing and recycling; at the same time, with the help of the dynamic stirring effect of the first collecting part, it effectively solves the problem of insufficient degreasing caused by the accumulation of water outlet materials, and significantly improves the degreasing uniformity and recovery purity of the metal powder; finally, combined with the degreasing agent circulation and automatic material transportation, an efficient and coherent integrated recovery system is constructed, which greatly improves the production efficiency and economic benefits while ensuring the performance of the regeneration feeding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 The figure is a schematic diagram of the overall structure of a powder recovery and processing system applied to metal powder injection molding according to the present invention.

[0022] Figure 2 This is a partial three-dimensional structure of a powder recovery and processing system for metal powder injection molding according to the present invention. Figure 1 .

[0023] Figure 3 This is a partial three-dimensional structure of a powder recovery and processing system for metal powder injection molding according to the present invention. Figure 2 .

[0024] Figure 4 A partial three-dimensional explosion of a powder recovery system for metal powder injection molding according to the present invention Figure 1 .

[0025] Figure 5 The present invention is a powder recovery and processing system for metal powder injection molding Figure 4 Enlarged view of point A in the middle.

[0026] Figure 6 The present invention is a powder recovery and processing system for metal powder injection molding Figure 4 Enlarged view of point B in the middle.

[0027] Figure 7 A partial three-dimensional explosion of a powder recovery system for metal powder injection molding according to the present invention Figure 2 .

[0028] Figure 8The present invention is a powder recovery and processing system for metal powder injection molding Figure 2 Enlarged view of point C in the middle.

[0029] Figure 9 The present invention is a powder recovery and processing system for metal powder injection molding Figure 1 Enlarged view of point D in the middle.

[0030] Figure 10 The present invention is a powder recovery and processing system for metal powder injection molding Figure 3 Enlarged view of point E in the middle.

[0031] Description of reference numerals: 1. Cylinder; 11. Feed pipe; 12. Material channel; 13. Circulation pipe; 14. Clamping groove; 2. Support assembly; 21. First support part; 22. Second support part; 221. First opening; 222. Second opening; 23. Third support part; 231. Third opening; 3. Rotating member; 31. Rotating ring; 32. Clamping tooth; 33. Cylindrical pin; 4. First collecting part; 41. Cover plate; 42. Slide groove; 43. Connecting rod; 5. Second collecting part; 51. Clamping plate; 6. Drive assembly; 61. Gear; 62. Rotating shaft; 63. Transmission belt; 64. Transmission wheel; 65. Motor; 66. First fixing part; 67. Second fixing part; 68. Third fixing part. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] As mentioned above, the traditional degreasing method in metal powder injection molding involves immersing the nozzle material in a tank filled with a degreasing agent and then transferring it after it has been fully degreased. However, this method has significant drawbacks: if the entire material frame containing the nozzle material is immersed in the tank, the material blocks tend to stack on top of each other, hindering the effective penetration and contact of the degreasing agent, resulting in incomplete degreasing. If the nozzle material is directly poured into the tank, a large amount of manual labor is required to salvage it, resulting in low efficiency and high labor intensity.

[0034] Therefore, the present invention provides a recycling and processing system for the degreasing process of nozzle material in metal powder injection molding. Through a linked drive mechanism, the first collection part achieves continuous circular motion, achieving full automation of the degreasing and recycling process, thereby improving degreasing efficiency. The present invention solves this problem through the following means.

[0035] Example 1: Please refer to the instruction manual Figures 1 to 10 As shown in the figure, this embodiment 1 provides a powder recovery and processing system for metal powder injection molding, which includes a cylinder 1, a support assembly 2, a rotating part 3, a first collecting part 4, a second collecting part 5, a driving assembly 6, a degreasing agent storage device, a sprue material conveying device and a circulation pump.

[0036] The barrel 1 is an upward-opening cylindrical container, affixed with a feed pipe 11 for feeding a degreaser (the degreaser is selected based on the binder system, such as a solvent degreaser for a wax-based / polymer-wax composite binder, a catalytic degreaser for a polymer-based binder, and a water-based degreaser for a water-based binder) and a material channel 12 for feeding metal powder nozzle material. The degreaser storage device has an output port with a water pump connected to the feed pipe 11. The nozzle material conveying device has a feed port connected to the material channel 12, thereby enabling the feeding of the degreaser and metal powder nozzle material. A circulation pump is also provided at the bottom of the barrel 1, connected to the barrel 1 via a circulation pipe 13. Driving the circulation pump can circulate the solvent + water polymer in the cylinder 1. The connection port of the circulation pipe 13 and the cylinder 1 extends obliquely into the interior of the cylinder 1. When the circulation pump transports the liquid, a vortex is generated inside the cylinder 1 to accelerate the degreasing process of the metal powder nozzle material therein.

[0037] In this embodiment 1, Figure 2 、 Figure 7 as well as Figure 9 As shown, a support assembly 2 is provided in the cylinder 1. As a whole, the support assembly 2 has an annular structure and is provided in the cylinder 1. The support assembly 2 is provided with a plurality of rotating members 3 rotating around it. The rotating members 3 are connected to the first collecting part 4 (such as Figure 2 As shown, there are a total of eight rotating parts 3, and each rotating part 3 is connected to three first collecting parts 4). The first collecting part 4 is a frame-type structure, on which a cover plate 41 is hinged by a torsion spring. At the same time, a number of water leakage holes are opened on the side of the first collecting part 4 to reduce resistance and stir the water flow when it rotates in the cylinder 1.

[0038] In the initial state, the connecting rod 43 is vertically downward, and the first collecting portion 4 is located closest to the bottom surface of the cylinder 1. At this time, the cover plate 41 is located on the side away from the support assembly 2, that is, close to the inner wall of the cylinder 1. When the rotating member 3 rotates, the first collecting portion 4 first rotates toward the rotating member 3, gradually rises from the inside of the support assembly 2, and then descends when it reaches the highest point. Figure 7 As shown, Figure 7Part of the first collecting part 4 and the connecting rod 43 are hidden, and only one set of the first collecting part 4 is shown. Figure 7 For the convenience of description, the direction of the first collecting portion 4 performing circular motion in this state is named "first rotation direction".

[0039] Correspondingly, a plurality of slots 14 (corresponding to the number of rotating parts 3) are fixed on the inner wall of the cylinder 1 (such as Figure 3 As shown in FIG, a clamping plate 51 is fixed to one side of the second collecting portion 5 near the clamping slot 14, and the clamping plate 51 is slideably connected to the clamping slot 14. The second collecting portion 5 also has a frame-shaped structure and has a bottom surface facing the bottom of the cylinder 1. A plurality of water leakage holes are formed on the bottom frame surface and the side frame surface of the second collecting portion 5.

[0040] Therefore, when the first collecting section 4 is driven to rotate in the first direction, it collects a certain amount of metal powder sprue from the cylinder 1 and enters it. Due to the deformation of the torsion spring, the cover plate 41 is pressed against the first collecting section 4, and water flows out of the leak hole of the first collecting section 4. When the first collecting section 4 rotates to its highest point and descends, the opening of the first collecting section 4 away from the cover plate 41 docks with the second collecting section 5, and the second collecting section 5 is inserted into the inner cavity of the first collecting section 4. Because the first collecting section 4 is provided with a slot 42 corresponding to the thickness of the retaining plate 51, the first collecting section 4 can be inserted outside the second collecting section 5 and rotate. At this time, the cover plate 41 is rotated by the abutment of the second collecting section 5, the torsion spring deforms, and the cover plate 41 opens, releasing the metal powder sprue collected therein, allowing it to enter the second collecting section 5 for collection. When the first collecting section 4 continues to rotate and disengages from the second collecting section 5, the torsion spring loses its abutment force, and the deformation causes it to return to its original position, re-covering the cover plate 41 on the first collecting section 4. And then the next cycle is carried out. This process is repeated and the metal powder nozzle material is finally collected.

[0041] Example 2: Based on the above embodiment, in order to further explain the technical solution clearly and completely, the present invention also provides a second embodiment. In this second embodiment, Figure 3 As shown, the support assembly 2 includes a first support portion 21 fixed in the cylinder 1 , and a certain gap is formed between the first support portions 21 , and the gap is used for passing the first collecting portion 4 and the connecting rod 43 .

[0042] The second supporting portion 22 is fixed on the first supporting portion 21. The second supporting portion 22 is an annular structure (i.e., the main body of the annular structure of the supporting assembly 2 in the above embodiment). Figure 5As shown, the second support portion 22 has a first opening 221 facing upward and a second opening 222 facing the outer edge. A plurality of third support portions 23 (corresponding in position and number to the rotating member 3) are fixed to the second support portion 22. The rotating member 3 is rotatably connected to the third support portion 23 and performs a circular motion around the third support portion 23. A third opening 231 is formed in the third support portion 23, and the first opening 221 and the third opening 231 are connected.

[0043] like Figure 4 or Figure 6 As shown, in this second embodiment, a rotating ring 31 is rotatably disposed within the second support portion 22 for use with the rotating member 3. The rotating ring 31 has a cylindrical pin 33 located within the first opening 221. The rotating member 3 is generally annular, with a plurality of beveled grooves defined along its inner diameter. These beveled grooves and the cylindrical pin 33 engage and limit each other. When the rotating ring 31 rotates around the second support portion 22, the cylindrical pin 33 rotates with it and enters the beveled grooves. Due to the beveled grooves being arranged at an angle, the cylindrical pin 33 exerts a thrust on the beveled grooves as it continues to move, thereby driving the beveled grooves to move in the direction of the cylindrical pin 33's rotation, thereby driving the rotating member 3 to rotate, ultimately achieving the drive of the first collecting portion 4 in the aforementioned embodiment. The rotating ring 31 also has a plurality of latching teeth 32 disposed on its outer side, located within the second opening 222. The latching teeth 32 are engaged by the drive assembly 6 to drive the rotating ring 31 to rotate.

[0044] Example 3: Based on the above embodiment, in order to further explain the technical solution clearly and completely, the present invention also provides a third embodiment. In this third embodiment, Figure 10 As shown, the drive assembly 6 includes a gear 61 that meshes with the latch teeth 32. The gear 61 is rotatably mounted on a second fixing portion 67, which is fixed to the first support portion 21. A rotating shaft 62 is fixed to the gear 61, which is rotatably mounted on a third fixing portion 68, which is fixed to the barrel 1. A motor 65 is fixed to the barrel 1, which is rotatably mounted on a first fixing portion 66, which is also fixed to the barrel 1. A transmission wheel 64 is fixed to the end of the rotating shaft 62 away from the gear 61 and to the output shaft of the motor 65. The two transmission wheels 64 are connected by a transmission belt 63.

[0045] When the motor 65 is driven, the transmission wheel 64 fixed to the rotating shaft 62 is driven to rotate through the transmission wheel 64 (e.g., a pulley, a sprocket) and the transmission belt 63 (e.g., a transmission belt, a chain) fixed thereon, thereby driving the gear 61 to rotate. Under the meshing action, the latching teeth 32 are forced to move, and finally drive the rotating ring 31 to rotate.

[0046] Therefore, in summary, the present invention and its embodiments have the following advantages over the prior art, including but not limited to: In this invention, a drive assembly 6 drives a rotating member 3 in circular motion around a support assembly 2, driving a first collecting section 4 fixed thereto to dynamically collect degreased metal powder nozzle material within the barrel 1. As the first collecting section 4 rotates, it automatically transfers the powder to a second collecting section 5 located on a slider. This design completely eliminates the need for manual salvaging and pre-emptying the degreaser to collect the powder, achieving continuous degreasing and recovery operations, significantly improving recovery efficiency and reducing labor costs.

[0047] At the same time, the present invention utilizes the dynamic collection mechanism of the first collecting section 4 during rotation to keep the metal powder sprue material continuously agitated and dispersed in the degreasing agent. This motion effectively prevents static accumulation of powder, ensuring that the degreasing agent can fully contact the binder attached to the sprue material surface, significantly improving the uniformity and thoroughness of degreasing, thereby ensuring the purity of the recovered metal powder and the process performance of the recycled feed material.

[0048] In addition, the present invention uses a motor 65 to rotate the rotating ring 31 through the meshing of the transmission belt 63, the gear 61, and the latching teeth 32. The meshing of the cylindrical pin 33 with the helical teeth on the rotating member 3 drives the rotating member 3, to which the first collecting portion 4 is fixed, to stably operate around the third support portion 23. This allows the first collecting portion 4 to dynamically collect degreased metal powder while in motion and automatically transfer it to the second collecting portion 5, replacing inefficient manual operation.

[0049] In summary, the present invention realizes the continuous circular motion of the first collecting part 4 through the linkage drive mechanism, which not only completely eliminates the manual salvage link in the traditional process, but also realizes the full process automation of degreasing and recycling; at the same time, with the help of the dynamic stirring effect of the first collecting part 4, it effectively solves the problem of insufficient degreasing caused by the accumulation of water inlet material, and significantly improves the degreasing uniformity and recovery purity of the metal powder; finally, combined with the degreasing agent circulation and automatic material transportation (material channel 12, circulation pipe 13), an efficient and coherent integrated recovery system is constructed, which greatly improves the production efficiency and economic benefits while ensuring the performance of the regeneration feeding process.

[0050] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the present invention and its equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A powder recovery and processing system for metal powder injection molding, characterized in that: include: A cylinder (1), wherein a support assembly (2) is provided in the cylinder (1); A plurality of rotating members (3) are arranged in the cylinder (1), wherein the rotating members (3) are rotatably arranged on the supporting assembly (2); A plurality of first collecting parts (4) for collecting metal powder nozzle materials, wherein the first collecting parts (4) are fixed on the rotating part (3); The slide buckle is arranged on the second collecting part (5) in the cylinder (1), and the second collecting part (5) is used in conjunction with the first collecting part (4); The rotating member (3) is driven by the driving assembly (6) to perform circular motion around the supporting assembly (2), and the first collecting portion (4) rotates following the rotating member (3) and transfers the metal powder collected in the cylinder (1) to the second collecting portion (5) during the rotation.

2. The powder recovery and processing system for metal powder injection molding according to claim 1, characterized in that: Also includes: A degreasing agent storage device, the degreasing agent storage device having an output port with a water pump, the output port being connected to a feed pipe (11), and the feed pipe (11) being fixed to the barrel (1); A sprue material conveying device, the sprue material conveying device having a material delivery port, the material delivery port being connected to a material channel (12), and the material channel (12) being fixed on the cylinder (1); A circulation pump is connected to the cylinder (1) via a circulation pipe (13).

3. The powder recovery and processing system for metal powder injection molding according to claim 1, characterized in that: The support assembly (2) comprises a first support portion (21) fixed in the cylinder (1), a second support portion (22) fixed on the first support portion (21), a plurality of third support portions (23) fixed on the second support portion (22), the rotating member (3) being rotatably arranged on the third support portion (23), and a rotating ring (31) for cooperating with the rotating member (3) being rotatably arranged in the second support portion (22).

4. The powder recovery and processing system for metal powder injection molding according to claim 3, characterized in that: The second support portion (22) is provided with a first opening (221) and a second opening (222), the third support portion (23) is provided with a third opening (231), and the first opening (221) and the third opening (231) are in communication.

5. The powder recovery and processing system for metal powder injection molding according to claim 4, characterized in that: A plurality of latching teeth (32) and a plurality of cylindrical pins (33) are fixed on the rotating ring (31); the latching teeth (32) are located in the second opening (222); and the cylindrical pins (33) are used in conjunction with the first opening (221) and the third opening (231).

6. The powder recovery and processing system for metal powder injection molding according to claim 5, characterized in that: The rotating member (3) is arranged in a ring shape, and a plurality of oblique tooth grooves are provided in the inner ring diameter of the rotating member (3). These oblique tooth grooves are engaged with the cylindrical pin (33). The rotating ring (31) is driven by a driving assembly (6). When the rotating ring (31) rotates, the rotating member (3) performs a circular motion around the third support portion (23).

7. The powder recovery and processing system for metal powder injection molding according to claim 1, characterized in that: The first collecting part (4) is fixed to the rotating member (3) via a connecting rod (43); a cover plate (41) is rotatably connected to the first collecting part (4) via a torsion spring; and a sliding groove (42) is provided on a side of the first collecting part (4) close to the second collecting part (5).

8. The powder recovery and processing system for metal powder injection molding according to claim 7, characterized in that: A plurality of card slots (14) are fixed in the cylinder (1), a card plate (51) used in conjunction with the slide slot (42) is fixed on the second collecting portion (5), and the second collecting portion (5) is also locked in the card slot (14) by means of a sliding buckle of the card plate (51).

9. The powder recovery and processing system for metal powder injection molding according to claim 6, characterized in that: The driving assembly (6) includes a gear (61) meshing with the latching teeth (32), a rotating shaft (62) is fixed on the gear (61), a motor (65) is fixed on the cylinder (1), a transmission wheel (64) is fixed on the end of the rotating shaft (62) away from the gear (61) and an output shaft of the motor (65), and the two transmission wheels (64) are connected by a transmission belt (63).

10. The powder recovery and processing system for metal powder injection molding according to claim 9, characterized in that: The gear (61) is rotatably mounted on the second fixing portion (67), the second fixing portion (67) is fixed on the first supporting portion (21), the rotating shaft (62) is rotatably mounted on the third fixing portion (68), the third fixing portion (68) is fixed on the cylinder (1), and the motor (65) is rotatably mounted on the first fixing portion (66), which is also fixed on the cylinder (1).

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