Metal powder injection molding barrel anti-blocking temperature control device

Abstract

The application discloses a metal powder injection molding barrel anti-blocking temperature control device and belongs to the technical field of metal powder processing. The device comprises a barrel, a feeding port is arranged on the outer wall of the barrel, an extruder is arranged in the barrel in a penetrating and communicating mode, and a heater is arranged in the extruder. The device is characterized in that a temperature control mechanism is arranged in the barrel, and the temperature control mechanism comprises a material containing disc, a preheating assembly and a rotating assembly. The metal powder injection molding barrel anti-blocking temperature control device utilizes the waste heat of the heater in the extruder, forms a heat conduction liquid circulation through a heating pipe and an annular wave-shaped flow channel in a heating ring, preheats the material in the material containing disc, reduces the temperature difference between the feeding port and the interior of the extruder, avoids the condensation and blockage of the material due to sudden heating, simultaneously forms a temperature gradient through the wave-shaped flow channel, realizes the gradual heating of the material, and effectively reduces the risk of the blockage of the barrel.

Description

Technical Field

[0001] This invention relates to the field of metal powder processing technology, specifically to a temperature control device for preventing blockage in metal powder injection molding cylinders. Background Technology

[0002] Metal powder injection molding is a near-net-shape forming technology that integrates powder metallurgy and plastic injection molding. It involves mixing metal powder with an organic binder to obtain a uniform feedstock, then heating and melting it in a barrel, injection molding, and debinding and sintering to obtain high-precision complex metal parts. The temperature control stability of the barrel directly determines the consistency of feedstock melting and the continuity of production.

[0003] Authorization announcement number CN116511506B discloses a metal powder injection molding equipment, comprising: an injection mechanism for heating and conveying molten material; a feeding mechanism connected to the injection mechanism for feeding granular material, the feeding mechanism including a receiving plate for supporting the fed granular material; and a kneading and spreading mechanism connected to the feeding mechanism for spreading metal powder and kneading the granular material to form molten material. In use, the metal powder injection molding equipment of this invention conveys the granular material on the feeding seat to the receiving plate via a pushing assembly. A second rotation drive source drives the kneading and spreading assembly to rotate eccentrically, so that the kneading and spreading assembly spreads the metal powder onto the receiving plate and simultaneously kneads the granular material on the receiving plate, ensuring thorough mixing of the granular material and metal powder to form molten material. This avoids affecting the fluidity of the molten material in its molten state and improves product quality. This invention uses a kneading and spreading mechanism to knead and mix granular materials and metal powder, which can effectively improve the uniformity of material mixing. However, the mixed material is directly fed into the injection cylinder in this equipment, and there is no gradient preheating treatment before feeding. The temperature difference between the cylinder inlet and the internal heating zone is large, and the organic binder particles are prone to surface softening and adhesion due to sudden temperature changes, which in turn causes blockage of the inlet channel. At the same time, the equipment cannot achieve staged temperature control preheating of materials, making it difficult to adapt to the heating process requirements of different feed ratios. During long-term continuous production, the feeding melting consistency is poor, and the cylinder blockage frequency is high, which restricts the improvement of production efficiency and molding quality. Summary of the Invention

[0004] The purpose of this invention is to provide a temperature control device for preventing blockage of metal powder injection molding barrels. The device forms a heat-conducting liquid circulation through the heating tube and the annular corrugated flow channel in the heating ring, which preheats the material in the holding tray, reduces the temperature difference between the feed port and the inside of the extruder, and avoids blockage due to sudden heating and condensation of the material. At the same time, the corrugated flow channel forms a temperature gradient, which enables the material to gradually heat up and effectively reduces the risk of barrel blockage.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a temperature control device for preventing blockage of a metal powder injection molding cylinder, comprising a cylinder body, an inlet provided on the outer wall of the cylinder body, an extruder passing through and communicating with the cylinder body, and a heater provided inside the extruder, characterized in that a temperature control mechanism is provided inside the cylinder body, the temperature control mechanism comprising a material tray, a preheating component and a rotating component; The material tray includes an upper plate body inclinedly disposed in the inner cavity of the cylinder and a bottom plate movably assembled at the bottom of the upper plate body. Multiple partitions are fixedly arranged in a circular array at the center of the bottom plate, and the top of each partition penetrates the upper plate body upward. The partitions divide the interior of the material tray into multiple independent material filling chambers. The preheating assembly includes a heating ring, an annular corrugated flow channel, and a heating tube. The heating ring is rotatably assembled around the outer periphery of the upper disc through an annular assembly channel. An annular corrugated flow channel is provided inside the heating ring. A heating tube is installed in the extruder near the heater. Both ends of the heating tube are connected to the annular corrugated flow channel to form a liquid circulation passage. The rotating assembly includes a motor, a rotating plate, and a rotating rod. The motor is installed at the center of the top of the cylinder. The output shaft of the motor passes through the top wall of the cylinder and is fixed to the rotating plate. A rotating rod is installed on the rotating plate. The lower end of the rotating rod passes through the center of the upper plate and the bottom plate in sequence. The rotating rod is fixedly connected to the upper plate and slidably engaged with the bottom plate. The motor can drive the upper part of the material tray to rotate in a ring along the inner wall of the cylinder through the rotating plate and the rotating rod.

[0006] Preferably, the material tray further includes an upper flap, a first switch, a lower flap, a second switch, and a flexible partition; The upper plate has feeding slots along the annular array, and each feeding slot has an upper flap hinged in the upper plate. The upper plate and the corresponding upper flap are connected by a first switch. Each set of upper flaps and the first switch corresponds to an independent loading cavity. The bottom plate has feeding slots along the annular array, and a lower flap is hinged in each feeding slot. The bottom plate and the corresponding lower flap are connected by a second switch. Each set of lower flaps and the second switch correspond to an independent loading cavity. Each loading chamber is equipped with a flexible partition. The upper and lower ends of the flexible partition are connected to the bottom plate and the upper plate, respectively, and the two sides of the flexible partition are attached and fixed to the surface of the partition plate.

[0007] Preferably, the preheating assembly further includes a first return pipe, a first inlet pipe, a sleeve, a fixing column, a spherical joint, a connecting hose, and a connecting pipe; The outer wall of the heating ring is connected to the first return pipe and the first inlet pipe respectively. The other ends of the first return pipe and the first inlet pipe are connected to the sleeve. The inner wall of the sleeve is fitted with a fixed column through a sealed bearing. The end of the fixed column is fixed with a spherical pair. Two connecting hoses extend from the outer wall of the spherical sub-body, and the other ends of the two connecting hoses are connected to the connecting pipe; both ends of the connecting pipe are fixed to the inner wall of the cylinder, and both ends of the connecting pipe are connected to the two ends of the heating pipe respectively.

[0008] Preferably, the preheating component is further provided with an annular groove, a position adjustment component, a conveying groove and a water pump; two annular grooves are opened on the inner wall of the sleeve, and the two annular grooves are respectively connected to the first liquid inlet pipe and the first return pipe; two independent conveying grooves are opened through the inside of the fixed column and the spherical pair; One end of one of the conveying channels is connected to the first inlet pipe via a corresponding annular groove, and one end of the other conveying channel is connected to the first return pipe via another annular groove; the other ends of the two conveying channels are respectively connected to two connecting hoses. Preferably, the position adjusting component includes a first mounting plate, a first motor, a first gear, a second gear, a second mounting plate, a cylinder, and an anti-slip pad; the first mounting plate is fixed to the outer wall of the fixing column, the first motor is mounted on the first mounting plate, and the first gear is mounted on the output end of the first motor; the second gear, which meshes with the first gear, is mounted on the outer wall of the sleeve through a one-way rotating component; The second mounting plate is fixed to the section of the first inlet pipe near the heating ring. A cylinder is mounted on the second mounting plate, and the cylinder output end passes through the second mounting plate and is connected to an anti-slip pad.

[0009] Preferably, the rotating assembly further includes a first toothed ring, a second toothed ring, and a support frame; the first toothed ring is fixed along the upper edge of the outer wall of the upper disc, and the second toothed ring that mates with the first toothed ring is fixed along the inner wall of the cylinder; the support frame is assembled in the middle of the connecting pipe, and the support frame is used to support the mating spherical pair.

[0010] Preferably, the temperature control mechanism further includes a vibration component and a dispersing component; the vibration component includes an annular groove, an annular limiting plate, a spring, a flexible annular strip, a vibrating rod, and a vibrating ball; An annular groove is formed on the inner wall of the upper plate, and an annular limiting plate is fixed on the side of the bottom plate. The annular limiting plate is slidably embedded in the annular groove. The annular limiting plate and the annular groove are elastically connected by a spring and a flexible annular strip. Multiple vibrating balls are arranged in a circular array at the center of the base plate; multiple vibrating rods are fixed in a circular array on the outer wall of the fixed column, with each vibrating rod corresponding to and cooperating with a vibrating ball.

[0011] Preferably, the dispersing component includes a guide rail, a first baffle, a second baffle, and an electric pulley; the guide rail is fixed on both the left and right sides of each partition; the first baffle and the second baffle are slidably assembled inside a single loading chamber; the first baffle and the second baffle are slidably connected to each other; an electric pulley is assembled on the opposite side of the first baffle and the second baffle, and the electric pulley slides back and forth along the guide rail.

[0012] Preferably, the disintegration assembly further includes a limiting pivot, a first telescopic rod, a first mounting groove, a movable plate, an insert rod, steel balls, a reciprocating screw, and a guide rod; A limiting pivot is installed at the front of the first baffle. Multiple first telescopic rods are connected in series at equal intervals along the length of the limiting pivot through elastic elements. A first mounting groove is opened at the front of the first baffle. A reciprocating screw is rotatably installed through the middle of the first mounting groove. A second motor is installed at the top of the reciprocating screw. The second motor is fixed to the upper part of the first baffle. Two guide rods are symmetrically arranged inside the first mounting slot. A moving plate is threadedly connected to the surface of the reciprocating screw. The two ends of the moving plate are slidably sleeved on the guide rods. Two insert rods are symmetrically fixed on the surface of the moving plate. The width of the insert rods is less than the distance between two adjacent first telescopic rods. Two steel balls are movably installed on the left and right sides of each insert rod through elastic elements.

[0013] Preferably, the disintegration assembly further includes a second mounting groove, a second telescopic rod, and a pressing rod; the second mounting groove is opened at the front of the second baffle, and multiple second telescopic rods are installed inside the second mounting groove by means of elastic elements rotating at equal intervals along the length direction; the pressing rod is assembled on the side of the first baffle facing the second telescopic rod by means of telescopic elements, and the end of the pressing rod away from the first baffle is provided with a pressing slope.

[0014] Compared with the prior art, the beneficial effects of the present invention are: the anti-clogging temperature control device for metal powder injection molding barrel; 1. Utilizing the waste heat of the heater inside the extruder, a heat-conducting liquid circulation is formed through the heating tube and the annular corrugated flow channel inside the heating ring to preheat the material in the feeding tray, reduce the temperature difference between the feed port and the inside of the extruder, and prevent the material from condensing and blocking due to sudden heating. At the same time, the corrugated flow channel forms a temperature gradient, so as to gradually raise the temperature of the material and effectively reduce the risk of barrel blockage. 2. Multiple partitions divide the interior of the material tray into several independent loading chambers, allowing for batch loading, mixing, and unloading processes. The motor drives the material tray to revolve via a rotating plate and a rotating rod, and rotates itself in conjunction with the meshing of the first and second toothed rings, causing the material to tumble and mix. Batch processing effectively improves the uniformity of the fusion between metal powder and binder particles. 3. The bottom plate rotates synchronously with the vibrating ball as the material tray rotates. The fixed vibrating rod intermittently pushes the vibrating ball. With the elastic structure of the spring and the ring limit plate, the bottom plate reciprocates elastically along the axis, causing the material in the loading chamber to shake continuously, promoting the uniform adhesion of metal powder to the softened adhesive particles and enhancing the coating effect. 4. A second motor is provided to drive the reciprocating screw to rotate, which drives the insert rod and steel ball on the moving plate to move vertically back and forth, driving the first telescopic rod to rotate intermittently, continuously breaking up the material particles that stick together during the sliding process, preventing the binder particles from agglomerating after being heated, ensuring that the particle surface is in full contact with the metal powder, and improving the overall quality of the mixture. 5. After the cylinder drives the anti-slip pad to release the locking of the heating ring, the first motor drives the sleeve to rotate through the first gear and the second gear, which drives the heating ring to rotate relative to the material tray, adjusts the correspondence between the annular corrugated flow groove and each material filling chamber, flexibly adjusts the heating temperature of different material filling chambers, and adapts to the preheating requirements of different mixing times. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a three-dimensional cross-sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the three-dimensional two-section structure of the present invention; Figure 4 This is a three-dimensional magnified structural diagram of the material tray of the present invention from a perspective; Figure 5 This is a two-dimensional magnified structural diagram of the material tray of the present invention; Figure 6 This is a schematic diagram of the cross-sectional structure of the material tray of the present invention; Figure 7 This is a three-dimensional magnified structural diagram of the disintegration component of the present invention; Figure 8 This is a magnified three-dimensional structural diagram of the disintegration component of the present invention from a second perspective; Figure 9 This is a three-dimensional enlarged structural diagram of the insertion rod of the present invention.

[0016] In the picture: 100. Cylinder body; 200. Feed inlet; 300. Extruder; 400. Heater; 500. Temperature control mechanism; 510. Material tray; 511. Upper tray body; 512. Base plate; 513. Partition; 514. Upper flap; 515. First switch; 516. Lower flap; 517. Second switch; 518. Flexible partition; 520. Preheating component; 521. Heating ring; 522. Annular corrugated flow channel; 523. First return pipe; 524. First inlet pipe; 525. Sleeve; 526. Fixed column; 527. Annular groove; 5281. First mounting plate; 5282. First motor; 5283. First gear; 5284. Second gear; 5285. Second mounting plate; 5286. Cylinder; 5287. Anti-slip pad; 529. Spherical pair; 5210. Conveying channel; 5211. Connecting hose; 5212. Connecting pipe; 5213. Heating tube; 5214. Water pump; 530. Rotating assembly; 531. Motor; 532. Rotating plate; 533. Rotating rod; 534. First gear ring; 535. Second gear ring; 536. Support frame; 540. Vibration assembly; 541. Annular groove; 542. Annular limiting plate; 543. Spring; 544. Flexible annular strip; 545. Vibrating rod; 546. Vibrating ball; 550. Disassembly assembly; 551. Guide rail; 552. First baffle; 553. Second baffle; 554. Electric pulley; 555. Limiting pivot; 556. First telescopic rod; 557. First mounting slot; 558. Moving plate; 559. Insert rod; 5510. Steel ball; 5511. Reciprocating screw; 5512. Guide rod; 5513. Second mounting slot; 5514. Second telescopic rod; 5515. Extrusion rod; 5516. Second motor. Detailed Implementation

[0017] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0018] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0019] Please see Figures 1-4 , Figure 6 The present invention provides an embodiment of a metal powder injection molding cylinder anti-clogging temperature control device, comprising a cylinder 100, an inlet 200 on the outer wall of the cylinder 100, and a flexible discharge port at the bottom of the inlet 200 to avoid interference when the material tray 510 rotates. An extruder 300 is disposed and connected inside the cylinder 100, and a heater 400 is disposed inside the extruder 300. The invention is characterized in that a temperature control mechanism 500 is disposed inside the cylinder 100, the temperature control mechanism 500 comprising a material tray 510, a preheating component 520 and a rotating component 530, and the temperature control mechanism 500 further comprising a vibration component 540 and a dispersing component 550. It should be noted that the metal powder and organic binder particles can be fed into the receiving tray 510 through the feed inlet 200. At this time, the rotating component 530 can drive the receiving tray 510 to rotate in an inclined position against the inner wall of the cylinder 100. When the receiving tray 510 rotates, it mixes the powder and particles inside. At the same time, the preheating component 520 heats the particles inside the receiving tray 510. After the particles are heated, they soften, allowing the powder to better adhere to the particle surface. When the receiving tray 510 rotates along the inner wall of the cylinder 100, the vibration component 540 causes the receiving tray 510 to rotate. The bottom of the tray 510 vibrates, which improves the adhesion of the powder. At the same time, when one side of the tray 510 is in a high position, the particles and powder will slide to the middle of the tray 510. At this time, the dispersing component 550 will work to break up the particles that are stuck together. After the particles and powder are heated and bonded, the organic binder particles adhering to the metal powder will fall into the extruder 300 for heating and stirring. Since the organic binder particles are preheated inside the tray 510, the large temperature difference between the inside of the extruder 300 and the feed port will be avoided, thus preventing condensation and blockage.

[0020] like Figures 1-6 As shown, the material tray 510 includes an upper tray 511 obliquely disposed within the inner cavity of the cylinder 100, and a bottom plate 512 movably mounted on the bottom of the upper tray 511. Multiple partitions 513 are fixedly arranged in a circular array at the center of the bottom plate 512. The top of each partition 513 extends upward through the upper tray 511, dividing the interior of the material tray 510 into multiple independent loading chambers. The material tray 510 also includes an upper flap 514, a first switch 515, a lower flap 516, a second switch 517, and a flexible partition 518. The first switch 515 and the second switch 517 are existing mature technologies and are therefore not described in detail. Feed slots are formed along the circular array on the upper tray 511, and each feed slot is hinged... A top flip plate 514 is connected to the upper plate 511 and the corresponding top flip plate 514 through a first switch 515. Each set of top flip plates 514 and the first switch 515 corresponds to an independent loading cavity. The bottom plate 512 has a feeding groove along the annular array. A bottom flip plate 516 is hinged in each feeding groove. The bottom plate 512 and the corresponding bottom flip plate 516 are connected through a second switch 517. Each set of bottom flip plates 516 and the second switch 517 corresponds to an independent loading cavity. Each loading cavity is equipped with a flexible partition 518. The upper and lower ends of the flexible partition 518 are respectively connected to the bottom plate 512 and the upper plate 511. The two sides of the flexible partition 518 are attached and fixed to the surface of the partition plate 513. It is conceivable that when the material tray 510 rotates to the designated position, the second switch 517 will open the lower flap 516 downwards, allowing the heated and mixed organic binder particles to be discharged. Then, the second switch 517 will close the lower flap 516 upwards. At this time, the first switch 515 will open the upper flap 514 downwards, allowing the operator to add metal powder and organic binder particles into the loading chamber opened by the upper flap 514 through the feed inlet 200. After loading is completed, the upper flap 514 will close. The rotating component 530 will drive the material tray 510 to rotate along the inner wall of the cylinder 100. When the material tray 510 rotates, the metal powder and organic binder particles inside will tumble and mix. Batch mixing will effectively improve the fusion effect of metal powder and organic binder particles.

[0021] like Figures 1-6As shown, the preheating assembly 520 includes a heating ring 521, an annular corrugated flow groove 522, and a heating tube 5213. The heating ring 521 is rotatably assembled on the outer periphery of the upper plate 511 through an annular assembly groove. The annular corrugated flow groove 522 is formed inside the heating ring 521. The heating tube 5213 is installed in the extruder 300 near the heater 400. Both ends of the heating tube 5213 are connected to the annular corrugated flow groove 522 to form a liquid circulation passage. The heating tube 5213 has a spiral part located inside the extruder 300, and a liquid outlet and a return part are connected between the spiral part and the connecting pipe 5212. The preheating assembly 520 also includes a first return pipe 523, a first liquid inlet pipe 524, a sleeve 525, a fixed column 526, and a spherical pair 5213. 29. Connecting hose 5211 and connecting pipe 5212, the outer wall of heating ring 521 is connected to first return pipe 523 and first inlet pipe 524 respectively, the other ends of first return pipe 523 and first inlet pipe 524 are connected to sleeve 525; the inner wall of sleeve 525 is sleeved with fixed column 526 through sealed bearing, the end of fixed column 526 is fixed with spherical joint 529, two connecting hoses 5211 are connected to the outer wall of spherical joint 529, the other ends of the two connecting hoses 5211 are connected to connecting pipe 5212; both ends of connecting pipe 5212 are fixed to the inner wall of cylinder 100, and both ends of connecting pipe 5212 are connected to both ends of heating pipe 5213 respectively, one end of connecting pipe 5212 is provided with liquid outlet chamber connected to liquid outlet of heating pipe 5213, connecting pipe 5212... 12. The other end is provided with a return chamber connected to the return section of the heating pipe 5213. The preheating component 520 is also provided with an annular groove 527, a position adjustment component, a conveying groove 5210 and a water pump 5214. Two annular grooves 527 are opened on the inner wall of the sleeve 525. The two annular grooves 527 are respectively connected to the first liquid inlet pipe 524 and the first return pipe 523. Two independent conveying grooves 5210 are opened through the inside of the fixed column 526 and the spherical pair 529. One end of one conveying groove 5210 is connected to the first liquid inlet pipe 524 through the corresponding annular groove 527, and the other end of the other conveying groove 5210 is connected to the first return pipe 523 through the other annular groove 527. The other ends of the two conveying grooves 5210 are respectively connected to two connecting hoses 5211. The position adjustment component includes... The system includes a first mounting plate 5281, a first motor 5282, a first gear 5283, a second gear 5284, a second mounting plate 5285, a cylinder 5286, and an anti-slip pad 5287. The first mounting plate 5281 is fixed to the outer wall of the fixing column 526. The first motor 5282 is mounted on the first mounting plate 5281, and the first gear 5283 is mounted on the output end of the first motor 5282. The second gear 5284, which meshes with the first gear 5283, is mounted on the outer wall of the sleeve 525 through a one-way rotating part. The second mounting plate 5285 is fixed to the section of the first liquid inlet pipe 524 near the heating ring 521. The cylinder 5286 is mounted on the second mounting plate 5285, and the output end of the cylinder 5286 passes through the second mounting plate 5285 and is connected to the anti-slip pad 5287. It is worth noting that the operation of the water pump 5214 can transport the heated liquid from the outlet of the heating tube 5213 to the inlet chamber of the connecting pipe 5212 through the outlet end. Simultaneously, the water pump 5214 draws the liquid from the return chamber of the connecting pipe 5212 back into the return section of the heating tube 5213. The liquid in the inlet chamber of the connecting pipe 5212 is then transported through one of the connecting hoses 5211 to the corresponding conveying trough 5210. The conveying trough 5210 transports the liquid to the first inlet pipe 524 through the corresponding annular groove 527. The first inlet pipe 524 then transports the heated liquid to the annular corrugated flow channel 522 to preheat the organic binder particles in the material tray 510. After the liquid flows through the annular corrugated flow channel 522 once, it will flow from... The other end is fed into the first return pipe 523, and the liquid is transported through the first return pipe 523 to the corresponding conveying tank 5210 through another annular groove 527. The conveying tank 5210 will transport the liquid to the inside of the return chamber of the connecting pipe 5212 through the corresponding connecting hose 5211, and the liquid in the return chamber of the connecting pipe 5212 will be pumped to the return section of the heating pipe 5213 by the water pump 5214. The return section will transport the liquid to the spiral section. The liquid in the spiral section will be heated by the heater 400. After being heated by the heater, the liquid in the spiral section will be transported to the liquid outlet through the other end. During this process, the liquid entering the spiral section from the return section will have a certain cooling effect on the end of the heater near the feed, so as to avoid the particle agglomeration caused by excessive temperature difference. When the liquid flows through the annular corrugated flow channel 522, the temperature at the inlet is the highest and the temperature at the outlet is the lowest. As the liquid flows, the temperature gradually decreases, resulting in different temperatures in different areas of the loading chamber of the material tray 510. The organic binder particles in the lowest-temperature loading chamber are added in the shortest time. As the temperature of this area increases, the addition time of the organic binder particles gradually increases, and the mixing time between the powder and particles also gradually increases, thus keeping the organic binder particles in a state of gradual heating. When the organic binder particles in the highest-temperature area have finished mixing, the lower flap 516 and the upper flap 514 operate to unload and load materials. When it is necessary to adjust the temperature gradient of each loading chamber to adapt to process requirements, the cylinder 5286 operates... The first motor 5282 can drive the anti-slip pad 5287 to separate from the upper plate 511. The operation of the first motor 5282 will drive the first gear 5283 to rotate. When the first gear 5283 rotates, it will drive the second gear 5284 to rotate. When the second gear 5284 rotates, it will drive the sleeve 525 to rotate around the outer surface of the fixed column 526 through the one-way rotating component. When the sleeve 525 rotates, it will drive the heating ring 521 to rotate in the annular groove of the upper plate 511 through the first return pipe 523 and the first liquid inlet pipe 524. When the heating ring 521 rotates, it will drive the annular corrugated flow groove 522 to rotate. When the annular corrugated flow groove 522 rotates, it can adjust the temperature of the filling chamber, so that the temperature of the filling chamber can be adjusted according to the filling time.

[0022] like Figures 1-6 As shown, the rotating assembly 530 includes a motor 531, a rotating plate 532, and a rotating rod 533. The motor 531 is installed at the center of the top of the cylinder 100. The output shaft of the motor 531 passes through the top wall of the cylinder 100 and is fixedly connected to the rotating plate 532. The rotating rod 533 passes through the rotating plate 532. The lower end of the rotating rod 533 passes sequentially through the center of the upper plate 511 and the bottom plate 512. The rotating rod 533 is fixedly connected to the upper plate 511 and slidably engaged with the bottom plate 512. The motor 531 can... The upper part of the material tray 510 is driven to rotate in a ring along the inner wall of the cylinder 100 by the rotating plate 532 and the rotating rod 533. The rotating assembly 530 also includes a first toothed ring 534, a second toothed ring 535 and a support frame 536. The first toothed ring 534 is fixed on the upper edge of the outer wall of the upper plate 511, and the second toothed ring 535 that mates with the first toothed ring 534 is fixed on the inner wall of the cylinder 100. The support frame 536 is assembled in the middle of the connecting pipe 5212. The support frame 536 is used to support the mating spherical pair 529. It is clear that when the motor 531 is working, it can drive the rotating plate 532 to rotate. When the rotating plate 532 rotates, its end drives the rotating rod 533 to make a circular motion around the output end of the motor 531. When the rotating rod 533 rotates, its end drives the spherical pair 529 to make a directional circular motion inside the support frame 536 through the fixed column 526. When the rotating rod 533 rotates, it will drive the material tray 510 to rotate. When the material tray 510 rotates, it will drive the first toothed ring 534 to rotate. When the first toothed ring 534 rotates, it will mesh and rotate through the second toothed ring 535. When the first toothed ring 534 meshes and rotates, it will drive the material tray 510 to rotate. When the material tray 510 rotates, it will drive the rotating rod 533 to rotate. When the rotating rod 533 rotates, it will rotate with the rotating plate 532 and the fixed column 526. When the material tray 510 rotates, it will mix the powder and granules inside. Since the anti-slip pad 5287 is pressed against the surface of the upper plate 511, the heating ring 521 can be driven to rotate when the material tray 510 rotates. When the heating ring 521 rotates, it drives the sleeve 525 to rotate around the surface of the fixed column 526 through the first liquid inlet pipe 524 and the first return pipe 523.

[0023] like Figures 4-6As shown, the vibration assembly 540 includes an annular groove 541, an annular limiting plate 542, a spring 543, a flexible annular strip 544, a vibrating rod 545, and a vibrating ball 546. The annular groove 541 is formed on the inner wall of the upper plate 511, and the annular limiting plate 542 is fixed to the side of the bottom plate 512. The annular limiting plate 542 is slidably embedded in the annular groove 541. The annular limiting plate 542 and the annular groove 541 are elastically connected by the spring 543 and the flexible annular strip 544. Multiple vibrating balls 546 are arranged in an annular array at the center of the bottom plate 512. Multiple vibrating rods 545 are fixed in an annular array on the outer wall of the fixing column 526, and each vibrating rod 545 and vibrating ball 546 are matched one-to-one. It should be understood that when the base plate 512 rotates, it drives the vibrating ball 546 at the bottom to rotate. When the vibrating ball 546 rotates to the side, the end of the vibrating rod 545 will press the vibrating ball 546 upward, and the vibrating ball 546 will push the base plate 512 upward. When the base plate 512 is pushed, it causes the annular limiting plate 542 to slide upward inside the annular groove 541. When the annular limiting plate 542 slides, it will press the spring 543 and the flexible annular strip 544. When the vibrating ball 546 separates from the vibrating rod 545, the annular limiting plate 542 and the base plate 512 are reset by the elastic force of the spring 543 and the flexible annular strip 544. Thus, the base plate 512 can vibrate the powder and particles inside the loading chamber repeatedly. When the powder and particles vibrate, the powder can better adhere to the surface of the particles.

[0024] like Figures 5-9As shown, the dispersing component 550 includes a guide rail 551, a first baffle 552, a second baffle 553, and an electric pulley 554; the guide rail 551 is fixed on both the left and right sides of each partition 513; the first baffle 552 and the second baffle 553 are slidably assembled inside a single loading chamber; the first baffle 552 and the second baffle 553 are slidably connected left and right; the electric pulley 554 is installed on the opposite side of the first baffle 552 and the second baffle 553, and the electric pulley 554 slides back and forth along the guide rail 551; the dispersing component 550 also includes The system includes a limiting pivot 555, a first telescopic rod 556, a first mounting groove 557, a moving plate 558, a plug rod 559, a steel ball 5510, a reciprocating screw 5511, and a guide rod 5512. The limiting pivot 555 is installed at the front of the first baffle 552. Multiple first telescopic rods 556 are connected in series along the length of the limiting pivot 555 via elastic elements. A first mounting groove 557 is formed at the front of the first baffle 552, through which the reciprocating screw 5511 is rotatably mounted. A second motor 5516 is installed at the top and fixed to the upper part of the first baffle 552. Two guide rods 5512 are symmetrically arranged inside the first mounting groove 557. A moving plate 558 is threadedly connected to the surface of the reciprocating screw 5511. The two ends of the moving plate 558 are slidably sleeved on the guide rods 5512. Two insert rods 559 are symmetrically fixed to the surface of the moving plate 558. The width of the insert rods 559 is smaller than the distance between two adjacent first telescopic rods 556. Two elastic elements are movably installed on the left and right sides of each insert rod 559. The steel ball 5510 and the dispersing assembly 550 also include a second mounting groove 5513, a second telescopic rod 5514 and a pressing rod 5515; the second mounting groove 5513 is opened at the front of the second baffle 553, and multiple second telescopic rods 5514 are installed in the second mounting groove 5513 by means of elastic elements rotating at equal intervals along the length direction; the pressing rod 5515 is assembled on the side of the first baffle 552 facing the second telescopic rod 5514 by means of telescopic elements, and the end of the pressing rod 5515 away from the first baffle 552 is provided with a pressing slope.

[0025] It should be noted that when the loading chamber rotates to the height of the material tray 510, the powder and granules inside the loading chamber will slide towards the first telescopic rod 556. At the same time, the second motor 5516 drives the reciprocating screw 5511 to rotate inside the first mounting groove 557. When the reciprocating screw 5511 rotates, it drives the moving plate 558 to slide threadedly. When the moving plate 558 slides threadedly, it will slide along the surface of the guide rod 5512. When the moving plate 558 slides, it will drive the insertion rod 559 to enter the gap between the two first telescopic rods 556. The vertical sliding motion continues. When the insertion rod 559 slides to the telescopic part of the first telescopic rod 556, the distance between the two telescopic parts is greater than the sum of the widths of the insertion rod 559 and the two steel balls 5510. Therefore, without restraint, the first telescopic rod 556 can rotate due to the elastic force of the elastic element itself. As the first telescopic rod 556 rotates, it disperses the approaching particles. During rotation, the telescopic part of the first telescopic rod 556 extends and remains in contact with the surface of the base plate 512, thus preventing particles from sliding to the rear of the first telescopic rod 556. After the retractor 556 separates, the reciprocating screw 5511 will continue to rotate, causing the moving plate 558 to slide upwards threadedly. When the moving plate 558 slides to the designated position, the end of the insert rod 559 will insert into the gap between the two first telescopic rods 556, simultaneously causing the two steel balls 5510 to press against the fixed part of the first telescopic rod 556. When the steel balls 5510 are pressed, they will slide into the insert rod 559. As the steel balls 5510 slide, they press against the elastic element. When the steel balls 5510 are pressed to the designated position, the insert rod 559 will drive the steel balls 5510 to slide into the insert rod 559. 510 slides out of the surface of the first telescopic rod 556. At this time, the reciprocating screw 5511 rotates and drives the moving plate 558 to slide downward. When the moving plate 558 slides downward, it drives the insert rod 559 and the steel ball 5510 to move downward. When the steel ball 5510 moves downward, it will squeeze the surface of the first telescopic rod 556. When the first telescopic rod 556 is squeezed, it will rotate and retract towards the first baffle 552. In this way, the particles that come close can be continuously dispersed, so that the surface of the organic binder particles can fully adhere to the metal powder. When the loading chamber is unloading, it will be at the lowest point of the loading tray 510. At this time, the electric pulley 554 slides on the guide rail 551. When the electric pulley 554 slides, it drives the first baffle 552 and the second baffle 553 to move in the unloading direction. At the same time, the front part of the second baffle 553 slides laterally along the back of the first baffle 552. As the second baffle 553 moves, the second telescopic rod 5514 inside the second mounting groove 5513 will be exposed. The second telescopic rod 5514 can be reset and unfolded by the elastic element. After unfolding, the end of the second telescopic rod 5514 and the end of the first telescopic rod 556 are on the same straight line. Therefore, when the first baffle 552 and the second baffle 553 move in the unloading direction, the second telescopic rod 5514 and the first telescopic rod 556 can handle the particles adhering to the bottom plate 512. The particles are pushed, and when the particles are pushed to the designated position, the lower flap 516 opens to unload the material. After unloading, the first telescopic rod 556 can be retracted by the vertical movement of the insert rod 559 and the steel ball 5510. The second telescopic rod 5514 pushes the extrusion rod 5515 out from the back of the first baffle 552 through the telescopic mechanism. When the second baffle 553 moves backward, it will drive the second telescopic rod 5514 to approach the inclined surface of one end of the extrusion rod 5515. The inclined surface of the extrusion rod 5515 extrudes the surface of the second telescopic rod 5514. When the second telescopic rod 5514 is extruded, it will rotate into the second mounting groove 5513 to retract. When the second telescopic rod 5514 is fully retracted, the telescopic mechanism can retract the extrusion rod 5515 into the back of the first baffle 552.

[0026] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A temperature control device for preventing blockage in a metal powder injection molding barrel, comprising a barrel body, an inlet on the outer wall of the barrel body, an extruder disposed and connected within the barrel body, and a heater disposed inside the extruder, characterized in that... The cylinder is equipped with a temperature control mechanism, which includes a material tray, a preheating component, and a rotating component. The material tray includes an upper plate body inclinedly disposed in the inner cavity of the cylinder and a bottom plate movably assembled at the bottom of the upper plate body. Multiple partitions are fixedly arranged in a circular array at the center of the bottom plate, and the top of each partition penetrates the upper plate body upward. The partitions divide the interior of the material tray into multiple independent material filling chambers. The preheating assembly includes a heating ring, an annular corrugated flow channel, and a heating tube. The heating ring is rotatably assembled around the outer periphery of the upper disc through an annular assembly channel. An annular corrugated flow channel is provided inside the heating ring. A heating tube is installed in the extruder near the heater. Both ends of the heating tube are connected to the annular corrugated flow channel to form a liquid circulation passage. The rotating assembly includes a motor, a rotating plate, and a rotating rod. The motor is installed at the center of the top of the cylinder. The output shaft of the motor passes through the top wall of the cylinder and is fixed to the rotating plate. A rotating rod is installed on the rotating plate. The lower end of the rotating rod passes through the center of the upper plate and the bottom plate in sequence. The rotating rod is fixedly connected to the upper plate and slidably engaged with the bottom plate. The motor can drive the upper part of the material tray to rotate in a ring along the inner wall of the cylinder through the rotating plate and the rotating rod.

2. The anti-clogging temperature control device for metal powder injection molding barrels according to claim 1, characterized in that: The material tray also includes an upper flap, a first switch, a lower flap, a second switch, and a flexible partition; The upper plate has feeding slots along the annular array, and each feeding slot has an upper flap hinged in the upper plate. The upper plate and the corresponding upper flap are connected by a first switch. Each set of upper flaps and the first switch corresponds to an independent loading cavity. The bottom plate has feeding slots along the annular array, and a lower flap is hinged in each feeding slot. The bottom plate and the corresponding lower flap are connected by a second switch. Each set of lower flaps and the second switch correspond to an independent loading cavity. Each loading chamber is equipped with a flexible partition. The upper and lower ends of the flexible partition are connected to the bottom plate and the upper plate, respectively, and the two sides of the flexible partition are attached and fixed to the surface of the partition plate.

3. The anti-clogging temperature control device for metal powder injection molding barrels according to claim 1, characterized in that: The preheating assembly also includes a first return pipe, a first inlet pipe, a sleeve, a fixing column, a spherical pair, a connecting hose, and a connecting pipe; The outer wall of the heating ring is connected to the first return pipe and the first inlet pipe respectively. The other ends of the first return pipe and the first inlet pipe are connected to the sleeve. The inner wall of the sleeve is fitted with a fixed column through a sealed bearing. The end of the fixed column is fixed with a spherical pair. Two connecting hoses extend from the outer wall of the spherical sub-body, and the other ends of the two connecting hoses are connected to the connecting pipe; both ends of the connecting pipe are fixed to the inner wall of the cylinder, and both ends of the connecting pipe are connected to the two ends of the heating pipe respectively.

4. The anti-clogging temperature control device for metal powder injection molding barrel according to claim 3, characterized in that: The preheating component is also provided with an annular groove, a position adjustment component, a conveying groove and a water pump; two annular grooves are opened on the inner wall of the sleeve, and the two annular grooves are respectively connected to the first liquid inlet pipe and the first return pipe; two independent conveying grooves are opened through the inside of the fixed column and the spherical pair; One end of one of the conveying channels is connected to the first inlet pipe via a corresponding annular channel, and one end of the other conveying channel is connected to the first return pipe via another annular channel; the other ends of the two conveying channels are respectively connected to two connecting hoses.

5. The anti-clogging temperature control device for metal powder injection molding barrels according to claim 1, characterized in that: The position adjustment component includes a first mounting plate, a first motor, a first gear, a second gear, a second mounting plate, a cylinder, and an anti-slip pad; the first mounting plate is fixed to the outer wall of the fixed column, the first motor is mounted on the first mounting plate, and the first gear is mounted on the output end of the first motor; the second gear, which meshes with the first gear, is mounted on the outer wall of the sleeve through a one-way rotating component; The second mounting plate is fixed to the section of the first inlet pipe near the heating ring. A cylinder is mounted on the second mounting plate, and the cylinder output end passes through the second mounting plate and is connected to an anti-slip pad.

6. The anti-clogging temperature control device for metal powder injection molding barrel according to claim 1, characterized in that: The rotating assembly also includes a first toothed ring, a second toothed ring, and a support frame; the first toothed ring is fixed to the upper edge of the outer wall of the upper disc, and the second toothed ring that mates with the first toothed ring is fixed to the inner wall of the cylinder; the support frame is assembled in the middle of the connecting pipe, and the support frame is used to support the mating spherical pair.

7. The anti-clogging temperature control device for metal powder injection molding barrel according to claim 1, characterized in that: The temperature control mechanism also includes a vibration component and a dispersing component; the vibration component includes an annular groove, an annular limiting plate, a spring, a flexible annular strip, a vibrating rod, and a vibrating ball; An annular groove is formed on the inner wall of the upper plate, and an annular limiting plate is fixed on the side of the bottom plate. The annular limiting plate is slidably embedded in the annular groove. The annular limiting plate and the annular groove are elastically connected by a spring and a flexible annular strip. Multiple vibrating balls are arranged in a circular array at the center of the base plate; multiple vibrating rods are fixed in a circular array on the outer wall of the fixed column, with each vibrating rod corresponding to and cooperating with a vibrating ball.

8. The anti-clogging temperature control device for metal powder injection molding barrel according to claim 6, characterized in that: The dispersing assembly includes a guide rail, a first baffle, a second baffle, and an electric pulley; guide rails are fixed on both the left and right sides of each partition; the first baffle and the second baffle are slidably assembled inside a single loading chamber; the first baffle and the second baffle are slidably connected to each other; electric pulleys are assembled on opposite sides of the first baffle and the second baffle, and the electric pulleys slide back and forth along the guide rails.

9. The anti-clogging temperature control device for metal powder injection molding barrel according to claim 8, characterized in that: The disintegration assembly also includes a limiting pivot, a first telescopic rod, a first mounting groove, a moving plate, a plug rod, steel balls, a reciprocating screw, and a guide rod; A limiting pivot is installed at the front of the first baffle. Multiple first telescopic rods are connected in series at equal intervals along the length of the limiting pivot through elastic elements. A first mounting groove is opened at the front of the first baffle. A reciprocating screw is rotatably installed through the middle of the first mounting groove. A second motor is installed at the top of the reciprocating screw. The second motor is fixed to the upper part of the first baffle. Two guide rods are symmetrically arranged inside the first mounting slot. A moving plate is threadedly connected to the surface of the reciprocating screw. The two ends of the moving plate are slidably sleeved on the guide rods. Two insert rods are symmetrically fixed on the surface of the moving plate. The width of the insert rods is less than the distance between two adjacent first telescopic rods. Two steel balls are movably installed on the left and right sides of each insert rod through elastic elements.

10. The anti-clogging temperature control device for metal powder injection molding barrel according to claim 9, characterized in that: The disintegration assembly also includes a second mounting groove, a second telescopic rod, and a pressing rod; the second mounting groove is opened at the front of the second baffle, and multiple second telescopic rods are installed inside the second mounting groove by means of elastic elements rotating at equal intervals along the length direction; the pressing rod is assembled on the side of the first baffle facing the second telescopic rod by means of telescopic elements, and the end of the pressing rod away from the first baffle is provided with a pressing slope.

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